[net-next PATCH 0/9] Introduce RVU representors

[net-next PATCH 0/9] Introduce RVU representors

[Geetha sowjanya]

This series adds representor support for each rvu devices.
When switchdev mode is enabled, representor netdev is registered
for each rvu device. In implementation of representor model, 
one NIX HW LF with multiple SQ and RQ is reserved, where each
RQ and SQ of the LF are mapped to a representor. A loopback channel
is reserved to support packet path between representors and VFs.
CN10K silicon supports 2 types of MACs, RPM and SDP. This
patch set adds representor support for both RPM and SDP MAC
interfaces.

- Patch 1: Refactors and exports the shared service functions.
- patch 2: Implements basic representor driver.
- patch 3: Add devlink support to create representor netdevs that
  can be used to manage VFs.
- patch 4: Implements basec netdev_ndo_ops.
- Patch 5: Installs tcam rules to route packets between representor and
	   VFs.
- patch 6: Enables fetching VF stats via representor interface
- Patch 7: Adds support to sync link state between representors and VFs .
- patch 8: Enables configuring VF MTU via representor netdevs.
- patch 9: Add representors for sdp MAC

Geetha sowjanya (9):
  octeontx2-pf: Refactoring RVU driver
  octeontx2-pf: RVU representor driver
  octeontx2-pf: Create representor netdev
  octeontx2-pf: Add basic net_device_ops
  octeontx2-af: Add packet path between representor and VF
  octeontx2-pf: Get VF stats via representor
  octeontx2-pf: Add support to sync link state between representor and
    VFs
  octeontx2-pf: Configure VF mtu via representor
  octeontx2-pf: Add representors for sdp MAC

 .../net/ethernet/marvell/octeontx2/Kconfig    |   8 +
 .../ethernet/marvell/octeontx2/af/Makefile    |   3 +-
 .../net/ethernet/marvell/octeontx2/af/mbox.h  |  73 +++
 .../net/ethernet/marvell/octeontx2/af/npc.h   |   1 +
 .../net/ethernet/marvell/octeontx2/af/rvu.h   |  30 +-
 .../marvell/octeontx2/af/rvu_debugfs.c        |  27 -
 .../marvell/octeontx2/af/rvu_devlink.c        |   6 +
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   |  67 +-
 .../marvell/octeontx2/af/rvu_npc_fs.c         |   4 +
 .../ethernet/marvell/octeontx2/af/rvu_rep.c   | 457 +++++++++++++
 .../marvell/octeontx2/af/rvu_struct.h         |  26 +
 .../marvell/octeontx2/af/rvu_switch.c         |  20 +-
 .../ethernet/marvell/octeontx2/nic/Makefile   |   2 +
 .../ethernet/marvell/octeontx2/nic/cn10k.c    |   4 +-
 .../ethernet/marvell/octeontx2/nic/cn10k.h    |   2 +-
 .../marvell/octeontx2/nic/otx2_common.c       |  53 +-
 .../marvell/octeontx2/nic/otx2_common.h       |  83 ++-
 .../marvell/octeontx2/nic/otx2_devlink.c      |  48 ++
 .../ethernet/marvell/octeontx2/nic/otx2_pf.c  | 305 ++++++---
 .../ethernet/marvell/octeontx2/nic/otx2_reg.h |   1 +
 .../marvell/octeontx2/nic/otx2_txrx.c         |  33 +-
 .../marvell/octeontx2/nic/otx2_txrx.h         |   3 +-
 .../ethernet/marvell/octeontx2/nic/otx2_vf.c  |  18 +-
 .../net/ethernet/marvell/octeontx2/nic/rep.c  | 602 ++++++++++++++++++
 .../net/ethernet/marvell/octeontx2/nic/rep.h  |  51 ++
 25 files changed, 1704 insertions(+), 223 deletions(-)
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.c
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.h

-- 
2.25.1

[net-next PATCH 1/9] octeontx2-pf: Refactoring RVU driver

[Geetha sowjanya]

Refactoring and export list of shared functions such that
they can be used by both RVU NIC and representor driver.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
---
 .../net/ethernet/marvell/octeontx2/af/mbox.h  |   1 +
 .../net/ethernet/marvell/octeontx2/af/npc.h   |   1 +
 .../net/ethernet/marvell/octeontx2/af/rvu.h   |   1 +
 .../marvell/octeontx2/af/rvu_debugfs.c        |  27 --
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   |  35 +--
 .../marvell/octeontx2/af/rvu_npc_fs.c         |   4 +
 .../marvell/octeontx2/af/rvu_struct.h         |  26 ++
 .../marvell/octeontx2/af/rvu_switch.c         |   2 +-
 .../marvell/octeontx2/nic/otx2_common.c       |   6 +-
 .../marvell/octeontx2/nic/otx2_common.h       |  43 ++--
 .../ethernet/marvell/octeontx2/nic/otx2_pf.c  | 240 +++++++++++-------
 .../marvell/octeontx2/nic/otx2_txrx.c         |  16 +-
 .../marvell/octeontx2/nic/otx2_txrx.h         |   3 +-
 .../ethernet/marvell/octeontx2/nic/otx2_vf.c  |   7 +-
 14 files changed, 237 insertions(+), 175 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 4a77f6fe2622..10efbd56abd1 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -1562,6 +1562,7 @@ struct flow_msg {
 	u8 icmp_type;
 	u8 icmp_code;
 	__be16 tcp_flags;
+	u16 sq_id;
 };
 
 struct npc_install_flow_req {
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/npc.h b/drivers/net/ethernet/marvell/octeontx2/af/npc.h
index d883157393ea..a6533a9b8aa1 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/npc.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/npc.h
@@ -245,6 +245,7 @@ enum key_fields {
 	NPC_VLAN_TAG2,
 	/* inner vlan tci for double tagged frame */
 	NPC_VLAN_TAG3,
+	NPC_SQ_ID,
 	/* other header fields programmed to extract but not of our interest */
 	NPC_UNKNOWN,
 	NPC_KEY_FIELDS_MAX,
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index 35834687e40f..e7ff2f1b021f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -1015,6 +1015,7 @@ int rvu_ndc_fix_locked_cacheline(struct rvu *rvu, int blkaddr);
 void rvu_switch_enable(struct rvu *rvu);
 void rvu_switch_disable(struct rvu *rvu);
 void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc);
+void rvu_switch_enable_lbk_link(struct rvu *rvu, u16 pcifunc, bool ena);
 
 int rvu_npc_set_parse_mode(struct rvu *rvu, u16 pcifunc, u64 mode, u8 dir,
 			   u64 pkind, u8 var_len_off, u8 var_len_off_mask,
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index 2500f5ba4f5a..e0ab6df3ed41 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -45,33 +45,6 @@ enum {
 	CGX_STAT18,
 };
 
-/* NIX TX stats */
-enum nix_stat_lf_tx {
-	TX_UCAST	= 0x0,
-	TX_BCAST	= 0x1,
-	TX_MCAST	= 0x2,
-	TX_DROP		= 0x3,
-	TX_OCTS		= 0x4,
-	TX_STATS_ENUM_LAST,
-};
-
-/* NIX RX stats */
-enum nix_stat_lf_rx {
-	RX_OCTS		= 0x0,
-	RX_UCAST	= 0x1,
-	RX_BCAST	= 0x2,
-	RX_MCAST	= 0x3,
-	RX_DROP		= 0x4,
-	RX_DROP_OCTS	= 0x5,
-	RX_FCS		= 0x6,
-	RX_ERR		= 0x7,
-	RX_DRP_BCAST	= 0x8,
-	RX_DRP_MCAST	= 0x9,
-	RX_DRP_L3BCAST	= 0xa,
-	RX_DRP_L3MCAST	= 0xb,
-	RX_STATS_ENUM_LAST,
-};
-
 static char *cgx_rx_stats_fields[] = {
 	[CGX_STAT0]	= "Received packets",
 	[CGX_STAT1]	= "Octets of received packets",
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 00af8888e329..cb795d09971e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -289,6 +289,23 @@ static void nix_rx_sync(struct rvu *rvu, int blkaddr)
 		dev_err(rvu->dev, "SYNC2: NIX RX software sync failed\n");
 }
 
+static int nix_get_tx_link(struct rvu *rvu, u16 pcifunc)
+{
+	struct rvu_hwinfo *hw = rvu->hw;
+	int pf = rvu_get_pf(pcifunc);
+	u8 cgx_id = 0, lmac_id = 0;
+
+	if (is_lbk_vf(rvu, pcifunc)) {/* LBK links */
+		return hw->cgx_links;
+	} else if (is_pf_cgxmapped(rvu, pf)) {
+		rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+		return (cgx_id * hw->lmac_per_cgx) + lmac_id;
+	}
+
+	/* SDP link */
+	return hw->cgx_links + hw->lbk_links;
+}
+
 static bool is_valid_txschq(struct rvu *rvu, int blkaddr,
 			    int lvl, u16 pcifunc, u16 schq)
 {
@@ -1984,23 +2001,6 @@ static void nix_clear_tx_xoff(struct rvu *rvu, int blkaddr,
 	rvu_write64(rvu, blkaddr, reg, 0x0);
 }
 
-static int nix_get_tx_link(struct rvu *rvu, u16 pcifunc)
-{
-	struct rvu_hwinfo *hw = rvu->hw;
-	int pf = rvu_get_pf(pcifunc);
-	u8 cgx_id = 0, lmac_id = 0;
-
-	if (is_lbk_vf(rvu, pcifunc)) {/* LBK links */
-		return hw->cgx_links;
-	} else if (is_pf_cgxmapped(rvu, pf)) {
-		rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
-		return (cgx_id * hw->lmac_per_cgx) + lmac_id;
-	}
-
-	/* SDP link */
-	return hw->cgx_links + hw->lbk_links;
-}
-
 static void nix_get_txschq_range(struct rvu *rvu, u16 pcifunc,
 				 int link, int *start, int *end)
 {
@@ -2949,6 +2949,7 @@ static int nix_tx_vtag_alloc(struct rvu *rvu, int blkaddr,
 	mutex_unlock(&vlan->rsrc_lock);
 
 	regval = size ? vtag : vtag << 32;
+	regval |= (vtag & ~GENMASK_ULL(47, 0)) << 48;
 
 	rvu_write64(rvu, blkaddr,
 		    NIX_AF_TX_VTAG_DEFX_DATA(index), regval);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
index c181e7aa9eb6..b1a1f2a7e974 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
@@ -555,6 +555,7 @@ do {									       \
 	NPC_SCAN_HDR(NPC_SMAC, NPC_LID_LA, la_ltype, la_start + 6, 6);
 	/* PF_FUNC is 2 bytes at 0th byte of NPC_LT_LA_IH_NIX_ETHER */
 	NPC_SCAN_HDR(NPC_PF_FUNC, NPC_LID_LA, NPC_LT_LA_IH_NIX_ETHER, 0, 2);
+	NPC_SCAN_HDR(NPC_SQ_ID, NPC_LID_LA, NPC_LT_LA_IH_NIX_ETHER, 2, 3);
 }
 
 static void npc_set_features(struct rvu *rvu, int blkaddr, u8 intf)
@@ -1223,6 +1224,9 @@ static int npc_update_tx_entry(struct rvu *rvu, struct rvu_pfvf *pfvf,
 	npc_update_entry(rvu, NPC_PF_FUNC, entry, (__force u16)htons(target),
 			 0, mask, 0, NIX_INTF_TX);
 
+	npc_update_entry(rvu, NPC_SQ_ID, entry, (__force u16)htons(req->packet.sq_id),
+			 0, req->mask.sq_id, 0, NIX_INTF_TX);
+
 	*(u64 *)&action = 0x00;
 	action.op = req->op;
 	action.index = req->index;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
index 5ef406c7e8a4..ee54f1694ea6 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_struct.h
@@ -825,4 +825,30 @@ enum nix_tx_vtag_op {
 #define VTAG_STRIP	BIT_ULL(4)
 #define VTAG_CAPTURE	BIT_ULL(5)
 
+/* NIX TX stats */
+enum nix_stat_lf_tx {
+	TX_UCAST	= 0x0,
+	TX_BCAST	= 0x1,
+	TX_MCAST	= 0x2,
+	TX_DROP		= 0x3,
+	TX_OCTS		= 0x4,
+	TX_STATS_ENUM_LAST,
+};
+
+/* NIX RX stats */
+enum nix_stat_lf_rx {
+	RX_OCTS		= 0x0,
+	RX_UCAST	= 0x1,
+	RX_BCAST	= 0x2,
+	RX_MCAST	= 0x3,
+	RX_DROP		= 0x4,
+	RX_DROP_OCTS	= 0x5,
+	RX_FCS		= 0x6,
+	RX_ERR		= 0x7,
+	RX_DRP_BCAST	= 0x8,
+	RX_DRP_MCAST	= 0x9,
+	RX_DRP_L3BCAST	= 0xa,
+	RX_DRP_L3MCAST	= 0xb,
+	RX_STATS_ENUM_LAST,
+};
 #endif /* RVU_STRUCT_H */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
index 854045ed3b06..ceb81eebf65e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
@@ -8,7 +8,7 @@
 #include <linux/bitfield.h>
 #include "rvu.h"
 
-static void rvu_switch_enable_lbk_link(struct rvu *rvu, u16 pcifunc, bool enable)
+void rvu_switch_enable_lbk_link(struct rvu *rvu, u16 pcifunc, bool enable)
 {
 	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
 	struct nix_hw *nix_hw;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index a85ac039d779..4b53af087cb4 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -227,7 +227,7 @@ int otx2_hw_set_mtu(struct otx2_nic *pfvf, int mtu)
 	u16 maxlen;
 	int err;
 
-	maxlen = otx2_get_max_mtu(pfvf) + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN;
+	maxlen = pfvf->hw.max_mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN;
 
 	mutex_lock(&pfvf->mbox.lock);
 	req = otx2_mbox_alloc_msg_nix_set_hw_frs(&pfvf->mbox);
@@ -236,7 +236,7 @@ int otx2_hw_set_mtu(struct otx2_nic *pfvf, int mtu)
 		return -ENOMEM;
 	}
 
-	req->maxlen = pfvf->netdev->mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN;
+	req->maxlen = mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN;
 
 	/* Use max receive length supported by hardware for loopback devices */
 	if (is_otx2_lbkvf(pfvf->pdev))
@@ -246,6 +246,7 @@ int otx2_hw_set_mtu(struct otx2_nic *pfvf, int mtu)
 	mutex_unlock(&pfvf->mbox.lock);
 	return err;
 }
+EXPORT_SYMBOL(otx2_hw_set_mtu);
 
 int otx2_config_pause_frm(struct otx2_nic *pfvf)
 {
@@ -1782,6 +1783,7 @@ void otx2_free_cints(struct otx2_nic *pfvf, int n)
 		free_irq(vector, &qset->napi[qidx]);
 	}
 }
+EXPORT_SYMBOL(otx2_free_cints);
 
 void otx2_set_cints_affinity(struct otx2_nic *pfvf)
 {
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index c5de3ba33e2f..e6d7b2487ed1 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -120,33 +120,6 @@ enum otx2_errcodes_re {
 	ERRCODE_IL4_CSUM = 0x22,
 };
 
-/* NIX TX stats */
-enum nix_stat_lf_tx {
-	TX_UCAST	= 0x0,
-	TX_BCAST	= 0x1,
-	TX_MCAST	= 0x2,
-	TX_DROP		= 0x3,
-	TX_OCTS		= 0x4,
-	TX_STATS_ENUM_LAST,
-};
-
-/* NIX RX stats */
-enum nix_stat_lf_rx {
-	RX_OCTS		= 0x0,
-	RX_UCAST	= 0x1,
-	RX_BCAST	= 0x2,
-	RX_MCAST	= 0x3,
-	RX_DROP		= 0x4,
-	RX_DROP_OCTS	= 0x5,
-	RX_FCS		= 0x6,
-	RX_ERR		= 0x7,
-	RX_DRP_BCAST	= 0x8,
-	RX_DRP_MCAST	= 0x9,
-	RX_DRP_L3BCAST	= 0xa,
-	RX_DRP_L3MCAST	= 0xb,
-	RX_STATS_ENUM_LAST,
-};
-
 struct otx2_dev_stats {
 	u64 rx_bytes;
 	u64 rx_frames;
@@ -228,6 +201,7 @@ struct otx2_hw {
 	u16			txschq_list[NIX_TXSCH_LVL_CNT][MAX_TXSCHQ_PER_FUNC];
 	u16			matchall_ipolicer;
 	u32			dwrr_mtu;
+	u32			max_mtu;
 	u8			smq_link_type;
 
 	/* HW settings, coalescing etc */
@@ -997,6 +971,21 @@ int otx2_pool_init(struct otx2_nic *pfvf, u16 pool_id,
 int otx2_aura_init(struct otx2_nic *pfvf, int aura_id,
 		   int pool_id, int numptrs);
 
+int otx2_init_hw_resources(struct otx2_nic *pfvf);
+void otx2_free_hw_resources(struct otx2_nic *pf);
+int otx2_wq_init(struct otx2_nic *pf);
+int otx2_check_pf_usable(struct otx2_nic *pf);
+int otx2_pfaf_mbox_init(struct otx2_nic *pf);
+int otx2_register_mbox_intr(struct otx2_nic *pf, bool probe_af);
+int otx2_realloc_msix_vectors(struct otx2_nic *pf);
+void otx2_pfaf_mbox_destroy(struct otx2_nic *pf);
+void otx2_disable_mbox_intr(struct otx2_nic *pf);
+void otx2_free_queue_mem(struct otx2_qset *qset);
+int otx2_alloc_queue_mem(struct otx2_nic *pf);
+void otx2_disable_napi(struct otx2_nic *pf);
+irqreturn_t otx2_cq_intr_handler(int irq, void *cq_irq);
+int otx2_init_rsrc(struct pci_dev *pdev, struct otx2_nic *pf);
+
 /* RSS configuration APIs*/
 int otx2_rss_init(struct otx2_nic *pfvf);
 int otx2_set_flowkey_cfg(struct otx2_nic *pfvf);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 6a44dacff508..88886ea864cc 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -1008,7 +1008,7 @@ static irqreturn_t otx2_pfaf_mbox_intr_handler(int irq, void *pf_irq)
 	return IRQ_HANDLED;
 }
 
-static void otx2_disable_mbox_intr(struct otx2_nic *pf)
+void otx2_disable_mbox_intr(struct otx2_nic *pf)
 {
 	int vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_AFPF_MBOX);
 
@@ -1016,8 +1016,9 @@ static void otx2_disable_mbox_intr(struct otx2_nic *pf)
 	otx2_write64(pf, RVU_PF_INT_ENA_W1C, BIT_ULL(0));
 	free_irq(vector, pf);
 }
+EXPORT_SYMBOL(otx2_disable_mbox_intr);
 
-static int otx2_register_mbox_intr(struct otx2_nic *pf, bool probe_af)
+int otx2_register_mbox_intr(struct otx2_nic *pf, bool probe_af)
 {
 	struct otx2_hw *hw = &pf->hw;
 	struct msg_req *req;
@@ -1060,8 +1061,9 @@ static int otx2_register_mbox_intr(struct otx2_nic *pf, bool probe_af)
 
 	return 0;
 }
+EXPORT_SYMBOL(otx2_register_mbox_intr);
 
-static void otx2_pfaf_mbox_destroy(struct otx2_nic *pf)
+void otx2_pfaf_mbox_destroy(struct otx2_nic *pf)
 {
 	struct mbox *mbox = &pf->mbox;
 
@@ -1076,8 +1078,9 @@ static void otx2_pfaf_mbox_destroy(struct otx2_nic *pf)
 	otx2_mbox_destroy(&mbox->mbox);
 	otx2_mbox_destroy(&mbox->mbox_up);
 }
+EXPORT_SYMBOL(otx2_pfaf_mbox_destroy);
 
-static int otx2_pfaf_mbox_init(struct otx2_nic *pf)
+int otx2_pfaf_mbox_init(struct otx2_nic *pf)
 {
 	struct mbox *mbox = &pf->mbox;
 	void __iomem *hwbase;
@@ -1124,6 +1127,7 @@ static int otx2_pfaf_mbox_init(struct otx2_nic *pf)
 	otx2_pfaf_mbox_destroy(pf);
 	return err;
 }
+EXPORT_SYMBOL(otx2_pfaf_mbox_init);
 
 static int otx2_cgx_config_linkevents(struct otx2_nic *pf, bool enable)
 {
@@ -1379,7 +1383,7 @@ static irqreturn_t otx2_q_intr_handler(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static irqreturn_t otx2_cq_intr_handler(int irq, void *cq_irq)
+irqreturn_t otx2_cq_intr_handler(int irq, void *cq_irq)
 {
 	struct otx2_cq_poll *cq_poll = (struct otx2_cq_poll *)cq_irq;
 	struct otx2_nic *pf = (struct otx2_nic *)cq_poll->dev;
@@ -1398,20 +1402,25 @@ static irqreturn_t otx2_cq_intr_handler(int irq, void *cq_irq)
 
 	return IRQ_HANDLED;
 }
+EXPORT_SYMBOL(otx2_cq_intr_handler);
 
-static void otx2_disable_napi(struct otx2_nic *pf)
+void otx2_disable_napi(struct otx2_nic *pf)
 {
 	struct otx2_qset *qset = &pf->qset;
 	struct otx2_cq_poll *cq_poll;
+	struct work_struct *work;
 	int qidx;
 
 	for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) {
 		cq_poll = &qset->napi[qidx];
-		cancel_work_sync(&cq_poll->dim.work);
+		work = &cq_poll->dim.work;
+		if (work->func)
+			cancel_work_sync(&cq_poll->dim.work);
 		napi_disable(&cq_poll->napi);
 		netif_napi_del(&cq_poll->napi);
 	}
 }
+EXPORT_SYMBOL(otx2_disable_napi);
 
 static void otx2_free_cq_res(struct otx2_nic *pf)
 {
@@ -1477,7 +1486,7 @@ static int otx2_get_rbuf_size(struct otx2_nic *pf, int mtu)
 	return ALIGN(rbuf_size, 2048);
 }
 
-static int otx2_init_hw_resources(struct otx2_nic *pf)
+int otx2_init_hw_resources(struct otx2_nic *pf)
 {
 	struct nix_lf_free_req *free_req;
 	struct mbox *mbox = &pf->mbox;
@@ -1601,8 +1610,9 @@ static int otx2_init_hw_resources(struct otx2_nic *pf)
 	mutex_unlock(&mbox->lock);
 	return err;
 }
+EXPORT_SYMBOL(otx2_init_hw_resources);
 
-static void otx2_free_hw_resources(struct otx2_nic *pf)
+void otx2_free_hw_resources(struct otx2_nic *pf)
 {
 	struct otx2_qset *qset = &pf->qset;
 	struct nix_lf_free_req *free_req;
@@ -1688,6 +1698,7 @@ static void otx2_free_hw_resources(struct otx2_nic *pf)
 	}
 	mutex_unlock(&mbox->lock);
 }
+EXPORT_SYMBOL(otx2_free_hw_resources);
 
 static bool otx2_promisc_use_mce_list(struct otx2_nic *pfvf)
 {
@@ -1770,15 +1781,23 @@ static void otx2_dim_work(struct work_struct *w)
 	dim->state = DIM_START_MEASURE;
 }
 
-int otx2_open(struct net_device *netdev)
+void otx2_free_queue_mem(struct otx2_qset *qset)
+{
+	kfree(qset->sq);
+	qset->sq = NULL;
+	kfree(qset->cq);
+	qset->cq = NULL;
+	kfree(qset->rq);
+	qset->rq = NULL;
+	kfree(qset->napi);
+}
+EXPORT_SYMBOL(otx2_free_queue_mem);
+int otx2_alloc_queue_mem(struct otx2_nic *pf)
 {
-	struct otx2_nic *pf = netdev_priv(netdev);
-	struct otx2_cq_poll *cq_poll = NULL;
 	struct otx2_qset *qset = &pf->qset;
-	int err = 0, qidx, vec;
-	char *irq_name;
+	struct otx2_cq_poll *cq_poll;
+	int err = -ENOMEM;
 
-	netif_carrier_off(netdev);
 
 	/* RQ and SQs are mapped to different CQs,
 	 * so find out max CQ IRQs (i.e CINTs) needed.
@@ -1791,14 +1810,13 @@ int otx2_open(struct net_device *netdev)
 
 	qset->napi = kcalloc(pf->hw.cint_cnt, sizeof(*cq_poll), GFP_KERNEL);
 	if (!qset->napi)
-		return -ENOMEM;
+		return err;
 
 	/* CQ size of RQ */
 	qset->rqe_cnt = qset->rqe_cnt ? qset->rqe_cnt : Q_COUNT(Q_SIZE_256);
 	/* CQ size of SQ */
 	qset->sqe_cnt = qset->sqe_cnt ? qset->sqe_cnt : Q_COUNT(Q_SIZE_4K);
 
-	err = -ENOMEM;
 	qset->cq = kcalloc(pf->qset.cq_cnt,
 			   sizeof(struct otx2_cq_queue), GFP_KERNEL);
 	if (!qset->cq)
@@ -1814,6 +1832,28 @@ int otx2_open(struct net_device *netdev)
 	if (!qset->rq)
 		goto err_free_mem;
 
+	return 0;
+
+err_free_mem:
+	otx2_free_queue_mem(qset);
+	return err;
+}
+EXPORT_SYMBOL(otx2_alloc_queue_mem);
+
+int otx2_open(struct net_device *netdev)
+{
+	struct otx2_nic *pf = netdev_priv(netdev);
+	struct otx2_cq_poll *cq_poll = NULL;
+	struct otx2_qset *qset = &pf->qset;
+	int err = 0, qidx, vec;
+	char *irq_name;
+
+	netif_carrier_off(netdev);
+
+	err = otx2_alloc_queue_mem(pf);
+	if (err)
+		return err;
+
 	err = otx2_init_hw_resources(pf);
 	if (err)
 		goto err_free_mem;
@@ -1971,10 +2011,7 @@ int otx2_open(struct net_device *netdev)
 	otx2_disable_napi(pf);
 	otx2_free_hw_resources(pf);
 err_free_mem:
-	kfree(qset->sq);
-	kfree(qset->cq);
-	kfree(qset->rq);
-	kfree(qset->napi);
+	otx2_free_queue_mem(qset);
 	return err;
 }
 EXPORT_SYMBOL(otx2_open);
@@ -2039,11 +2076,8 @@ int otx2_stop(struct net_device *netdev)
 	for (qidx = 0; qidx < netdev->num_tx_queues; qidx++)
 		netdev_tx_reset_queue(netdev_get_tx_queue(netdev, qidx));
 
+	otx2_free_queue_mem(qset);
 
-	kfree(qset->sq);
-	kfree(qset->cq);
-	kfree(qset->rq);
-	kfree(qset->napi);
 	/* Do not clear RQ/SQ ringsize settings */
 	memset_startat(qset, 0, sqe_cnt);
 	return 0;
@@ -2073,7 +2107,7 @@ static netdev_tx_t otx2_xmit(struct sk_buff *skb, struct net_device *netdev)
 	sq = &pf->qset.sq[sq_idx];
 	txq = netdev_get_tx_queue(netdev, qidx);
 
-	if (!otx2_sq_append_skb(netdev, sq, skb, qidx)) {
+	if (!otx2_sq_append_skb(pf, txq, sq, skb, qidx)) {
 		netif_tx_stop_queue(txq);
 
 		/* Check again, incase SQBs got freed up */
@@ -2778,7 +2812,7 @@ static const struct net_device_ops otx2_netdev_ops = {
 	.ndo_set_vf_trust	= otx2_ndo_set_vf_trust,
 };
 
-static int otx2_wq_init(struct otx2_nic *pf)
+int otx2_wq_init(struct otx2_nic *pf)
 {
 	pf->otx2_wq = create_singlethread_workqueue("otx2_wq");
 	if (!pf->otx2_wq)
@@ -2789,7 +2823,7 @@ static int otx2_wq_init(struct otx2_nic *pf)
 	return 0;
 }
 
-static int otx2_check_pf_usable(struct otx2_nic *nic)
+int otx2_check_pf_usable(struct otx2_nic *nic)
 {
 	u64 rev;
 
@@ -2806,8 +2840,9 @@ static int otx2_check_pf_usable(struct otx2_nic *nic)
 	}
 	return 0;
 }
+EXPORT_SYMBOL(otx2_check_pf_usable);
 
-static int otx2_realloc_msix_vectors(struct otx2_nic *pf)
+int otx2_realloc_msix_vectors(struct otx2_nic *pf)
 {
 	struct otx2_hw *hw = &pf->hw;
 	int num_vec, err;
@@ -2829,6 +2864,7 @@ static int otx2_realloc_msix_vectors(struct otx2_nic *pf)
 
 	return otx2_register_mbox_intr(pf, false);
 }
+EXPORT_SYMBOL(otx2_realloc_msix_vectors);
 
 static int otx2_sriov_vfcfg_init(struct otx2_nic *pf)
 {
@@ -2864,6 +2900,88 @@ static void otx2_sriov_vfcfg_cleanup(struct otx2_nic *pf)
 	}
 }
 
+int otx2_init_rsrc(struct pci_dev *pdev, struct otx2_nic *pf)
+{
+	struct device *dev = &pdev->dev;
+	struct otx2_hw *hw = &pf->hw;
+	int num_vec, err;
+
+	num_vec = pci_msix_vec_count(pdev);
+	hw->irq_name = devm_kmalloc_array(&hw->pdev->dev, num_vec, NAME_SIZE,
+					  GFP_KERNEL);
+	if (!hw->irq_name)
+		return -ENOMEM;
+
+	hw->affinity_mask = devm_kcalloc(&hw->pdev->dev, num_vec,
+					 sizeof(cpumask_var_t), GFP_KERNEL);
+	if (!hw->affinity_mask)
+		return -ENOMEM;
+
+	/* Map CSRs */
+	pf->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
+	if (!pf->reg_base) {
+		dev_err(dev, "Unable to map physical function CSRs, aborting\n");
+		return -ENOMEM;
+	}
+
+	err = otx2_check_pf_usable(pf);
+	if (err)
+		return err;
+
+	err = pci_alloc_irq_vectors(hw->pdev, RVU_PF_INT_VEC_CNT,
+				    RVU_PF_INT_VEC_CNT, PCI_IRQ_MSIX);
+	if (err < 0) {
+		dev_err(dev, "%s: Failed to alloc %d IRQ vectors\n",
+			__func__, num_vec);
+		return err;
+	}
+
+	otx2_setup_dev_hw_settings(pf);
+
+	/* Init PF <=> AF mailbox stuff */
+	err = otx2_pfaf_mbox_init(pf);
+	if (err)
+		goto err_free_irq_vectors;
+
+	/* Register mailbox interrupt */
+	err = otx2_register_mbox_intr(pf, true);
+	if (err)
+		goto err_mbox_destroy;
+
+	/* Request AF to attach NPA and NIX LFs to this PF.
+	 * NIX and NPA LFs are needed for this PF to function as a NIC.
+	 */
+	err = otx2_attach_npa_nix(pf);
+	if (err)
+		goto err_disable_mbox_intr;
+
+	err = otx2_realloc_msix_vectors(pf);
+	if (err)
+		goto err_detach_rsrc;
+
+	err = cn10k_lmtst_init(pf);
+	if (err)
+		goto err_detach_rsrc;
+
+	return 0;
+
+err_detach_rsrc:
+	if (pf->hw.lmt_info)
+		free_percpu(pf->hw.lmt_info);
+	if (test_bit(CN10K_LMTST, &pf->hw.cap_flag))
+		qmem_free(pf->dev, pf->dync_lmt);
+	otx2_detach_resources(&pf->mbox);
+err_disable_mbox_intr:
+	otx2_disable_mbox_intr(pf);
+err_mbox_destroy:
+	otx2_pfaf_mbox_destroy(pf);
+err_free_irq_vectors:
+	pci_free_irq_vectors(hw->pdev);
+
+	return err;
+}
+EXPORT_SYMBOL(otx2_init_rsrc);
+
 static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	struct device *dev = &pdev->dev;
@@ -2871,7 +2989,6 @@ static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	struct net_device *netdev;
 	struct otx2_nic *pf;
 	struct otx2_hw *hw;
-	int num_vec;
 
 	err = pcim_enable_device(pdev);
 	if (err) {
@@ -2922,71 +3039,14 @@ static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	/* Use CQE of 128 byte descriptor size by default */
 	hw->xqe_size = 128;
 
-	num_vec = pci_msix_vec_count(pdev);
-	hw->irq_name = devm_kmalloc_array(&hw->pdev->dev, num_vec, NAME_SIZE,
-					  GFP_KERNEL);
-	if (!hw->irq_name) {
-		err = -ENOMEM;
-		goto err_free_netdev;
-	}
-
-	hw->affinity_mask = devm_kcalloc(&hw->pdev->dev, num_vec,
-					 sizeof(cpumask_var_t), GFP_KERNEL);
-	if (!hw->affinity_mask) {
-		err = -ENOMEM;
-		goto err_free_netdev;
-	}
-
-	/* Map CSRs */
-	pf->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
-	if (!pf->reg_base) {
-		dev_err(dev, "Unable to map physical function CSRs, aborting\n");
-		err = -ENOMEM;
-		goto err_free_netdev;
-	}
-
-	err = otx2_check_pf_usable(pf);
+	err = otx2_init_rsrc(pdev, pf);
 	if (err)
 		goto err_free_netdev;
 
-	err = pci_alloc_irq_vectors(hw->pdev, RVU_PF_INT_VEC_CNT,
-				    RVU_PF_INT_VEC_CNT, PCI_IRQ_MSIX);
-	if (err < 0) {
-		dev_err(dev, "%s: Failed to alloc %d IRQ vectors\n",
-			__func__, num_vec);
-		goto err_free_netdev;
-	}
-
-	otx2_setup_dev_hw_settings(pf);
-
-	/* Init PF <=> AF mailbox stuff */
-	err = otx2_pfaf_mbox_init(pf);
-	if (err)
-		goto err_free_irq_vectors;
-
-	/* Register mailbox interrupt */
-	err = otx2_register_mbox_intr(pf, true);
-	if (err)
-		goto err_mbox_destroy;
-
-	/* Request AF to attach NPA and NIX LFs to this PF.
-	 * NIX and NPA LFs are needed for this PF to function as a NIC.
-	 */
-	err = otx2_attach_npa_nix(pf);
-	if (err)
-		goto err_disable_mbox_intr;
-
-	err = otx2_realloc_msix_vectors(pf);
-	if (err)
-		goto err_detach_rsrc;
-
 	err = otx2_set_real_num_queues(netdev, hw->tx_queues, hw->rx_queues);
 	if (err)
 		goto err_detach_rsrc;
 
-	err = cn10k_lmtst_init(pf);
-	if (err)
-		goto err_detach_rsrc;
 
 	/* Assign default mac address */
 	otx2_get_mac_from_af(netdev);
@@ -3050,6 +3110,7 @@ static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	netdev->min_mtu = OTX2_MIN_MTU;
 	netdev->max_mtu = otx2_get_max_mtu(pf);
+	hw->max_mtu = netdev->max_mtu;
 
 	/* reset CGX/RPM MAC stats */
 	otx2_reset_mac_stats(pf);
@@ -3110,11 +3171,8 @@ static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (test_bit(CN10K_LMTST, &pf->hw.cap_flag))
 		qmem_free(pf->dev, pf->dync_lmt);
 	otx2_detach_resources(&pf->mbox);
-err_disable_mbox_intr:
 	otx2_disable_mbox_intr(pf);
-err_mbox_destroy:
 	otx2_pfaf_mbox_destroy(pf);
-err_free_irq_vectors:
 	pci_free_irq_vectors(hw->pdev);
 err_free_netdev:
 	pci_set_drvdata(pdev, NULL);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
index f828d32737af..8223780fc269 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
@@ -131,6 +131,7 @@ static void otx2_xdp_snd_pkt_handler(struct otx2_nic *pfvf,
 }
 
 static void otx2_snd_pkt_handler(struct otx2_nic *pfvf,
+				 struct net_device *ndev,
 				 struct otx2_cq_queue *cq,
 				 struct otx2_snd_queue *sq,
 				 struct nix_cqe_tx_s *cqe,
@@ -145,7 +146,7 @@ static void otx2_snd_pkt_handler(struct otx2_nic *pfvf,
 
 	if (unlikely(snd_comp->status) && netif_msg_tx_err(pfvf))
 		net_err_ratelimited("%s: TX%d: Error in send CQ status:%x\n",
-				    pfvf->netdev->name, cq->cint_idx,
+				    ndev->name, cq->cint_idx,
 				    snd_comp->status);
 
 	sg = &sq->sg[snd_comp->sqe_id];
@@ -450,6 +451,7 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
 	int tx_pkts = 0, tx_bytes = 0, qidx;
 	struct otx2_snd_queue *sq;
 	struct nix_cqe_tx_s *cqe;
+	struct net_device *ndev;
 	int processed_cqe = 0;
 
 	if (cq->pend_cqe >= budget)
@@ -461,6 +463,7 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
 process_cqe:
 	qidx = cq->cq_idx - pfvf->hw.rx_queues;
 	sq = &pfvf->qset.sq[qidx];
+	ndev = pfvf->netdev;
 
 	while (likely(processed_cqe < budget) && cq->pend_cqe) {
 		cqe = (struct nix_cqe_tx_s *)otx2_get_next_cqe(cq);
@@ -475,7 +478,7 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
 		if (cq->cq_type == CQ_XDP)
 			otx2_xdp_snd_pkt_handler(pfvf, sq, cqe);
 		else
-			otx2_snd_pkt_handler(pfvf, cq, &pfvf->qset.sq[qidx],
+			otx2_snd_pkt_handler(pfvf, ndev, cq, &pfvf->qset.sq[qidx],
 					     cqe, budget, &tx_pkts, &tx_bytes);
 
 		cqe->hdr.cqe_type = NIX_XQE_TYPE_INVALID;
@@ -502,7 +505,7 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
 		/* Check if queue was stopped earlier due to ring full */
 		smp_mb();
 		if (netif_tx_queue_stopped(txq) &&
-		    netif_carrier_ok(pfvf->netdev))
+		    netif_carrier_ok(ndev))
 			netif_tx_wake_queue(txq);
 	}
 	return 0;
@@ -591,6 +594,7 @@ int otx2_napi_handler(struct napi_struct *napi, int budget)
 	}
 	return workdone;
 }
+EXPORT_SYMBOL(otx2_napi_handler);
 
 void otx2_sqe_flush(void *dev, struct otx2_snd_queue *sq,
 		    int size, int qidx)
@@ -1138,13 +1142,13 @@ static void otx2_set_txtstamp(struct otx2_nic *pfvf, struct sk_buff *skb,
 	}
 }
 
-bool otx2_sq_append_skb(struct net_device *netdev, struct otx2_snd_queue *sq,
+bool otx2_sq_append_skb(void *dev, struct netdev_queue *txq,
+			struct otx2_snd_queue *sq,
 			struct sk_buff *skb, u16 qidx)
 {
-	struct netdev_queue *txq = netdev_get_tx_queue(netdev, qidx);
-	struct otx2_nic *pfvf = netdev_priv(netdev);
 	int offset, num_segs, free_desc;
 	struct nix_sqe_hdr_s *sqe_hdr;
+	struct otx2_nic *pfvf = dev;
 
 	/* Check if there is enough room between producer
 	 * and consumer index.
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.h
index a82ffca8ce1b..74c2ee4d810d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.h
@@ -164,7 +164,8 @@ static inline u64 otx2_iova_to_phys(void *iommu_domain, dma_addr_t dma_addr)
 }
 
 int otx2_napi_handler(struct napi_struct *napi, int budget);
-bool otx2_sq_append_skb(struct net_device *netdev, struct otx2_snd_queue *sq,
+bool otx2_sq_append_skb(void *dev, struct netdev_queue *txq,
+			struct otx2_snd_queue *sq,
 			struct sk_buff *skb, u16 qidx);
 void cn10k_sqe_flush(void *dev, struct otx2_snd_queue *sq,
 		     int size, int qidx);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
index cf0aa16d7540..048f9a744542 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
@@ -395,7 +395,7 @@ static netdev_tx_t otx2vf_xmit(struct sk_buff *skb, struct net_device *netdev)
 	sq = &vf->qset.sq[qidx];
 	txq = netdev_get_tx_queue(netdev, qidx);
 
-	if (!otx2_sq_append_skb(netdev, sq, skb, qidx)) {
+	if (!otx2_sq_append_skb(vf, txq, sq, skb, qidx)) {
 		netif_tx_stop_queue(txq);
 
 		/* Check again, incase SQBs got freed up */
@@ -500,7 +500,7 @@ static const struct net_device_ops otx2vf_netdev_ops = {
 	.ndo_setup_tc = otx2_setup_tc,
 };
 
-static int otx2_wq_init(struct otx2_nic *vf)
+static int otx2_vf_wq_init(struct otx2_nic *vf)
 {
 	vf->otx2_wq = create_singlethread_workqueue("otx2vf_wq");
 	if (!vf->otx2_wq)
@@ -671,6 +671,7 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	netdev->min_mtu = OTX2_MIN_MTU;
 	netdev->max_mtu = otx2_get_max_mtu(vf);
+	hw->max_mtu = netdev->max_mtu;
 
 	/* To distinguish, for LBK VFs set netdev name explicitly */
 	if (is_otx2_lbkvf(vf->pdev)) {
@@ -688,7 +689,7 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		goto err_ptp_destroy;
 	}
 
-	err = otx2_wq_init(vf);
+	err = otx2_vf_wq_init(vf);
 	if (err)
 		goto err_unreg_netdev;
 
-- 
2.25.1

[net-next PATCH 2/9] octeontx2-pf: RVU representor driver

[Geetha sowjanya]

This patch adds basic driver for the RVU representor.
Driver on probe does pci specific initialization and does hw
resources configuration.
Introduces RVU_ESWITCH kernel config to enable/disable
this driver. Representor and NIC shares the code but represenotrs
netdev support subset of NIC functionality. Hence "is_rep_dev"
api helps to skip the features initialization that are not supported
by the representors.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
---
 .../net/ethernet/marvell/octeontx2/Kconfig    |   8 +
 .../ethernet/marvell/octeontx2/af/Makefile    |   3 +-
 .../net/ethernet/marvell/octeontx2/af/mbox.h  |   8 +
 .../net/ethernet/marvell/octeontx2/af/rvu.h   |  11 +
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   |  19 +-
 .../ethernet/marvell/octeontx2/af/rvu_rep.c   |  48 ++++
 .../ethernet/marvell/octeontx2/nic/Makefile   |   2 +
 .../marvell/octeontx2/nic/otx2_common.h       |  12 +-
 .../ethernet/marvell/octeontx2/nic/otx2_pf.c  |  17 +-
 .../marvell/octeontx2/nic/otx2_txrx.c         |  19 +-
 .../net/ethernet/marvell/octeontx2/nic/rep.c  | 221 ++++++++++++++++++
 .../net/ethernet/marvell/octeontx2/nic/rep.h  |  32 +++
 12 files changed, 383 insertions(+), 17 deletions(-)
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.c
 create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.h

diff --git a/drivers/net/ethernet/marvell/octeontx2/Kconfig b/drivers/net/ethernet/marvell/octeontx2/Kconfig
index a32d85d6f599..72f57d6f8a87 100644
--- a/drivers/net/ethernet/marvell/octeontx2/Kconfig
+++ b/drivers/net/ethernet/marvell/octeontx2/Kconfig
@@ -46,3 +46,11 @@ config OCTEONTX2_VF
 	depends on OCTEONTX2_PF
 	help
 	  This driver supports Marvell's OcteonTX2 NIC virtual function.
+
+config RVU_ESWITCH
+	tristate "Marvell RVU E-Switch support"
+	depends on OCTEONTX2_PF && NET_SWITCHDEV
+	default m
+	help
+	  This driver supports Marvell's RVU E-Switch that
+	  provides internal SRIOV packet steering and switching for the
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/Makefile b/drivers/net/ethernet/marvell/octeontx2/af/Makefile
index 3cf4c8285c90..ccea37847df8 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/Makefile
+++ b/drivers/net/ethernet/marvell/octeontx2/af/Makefile
@@ -11,4 +11,5 @@ rvu_mbox-y := mbox.o rvu_trace.o
 rvu_af-y := cgx.o rvu.o rvu_cgx.o rvu_npa.o rvu_nix.o \
 		  rvu_reg.o rvu_npc.o rvu_debugfs.o ptp.o rvu_npc_fs.o \
 		  rvu_cpt.o rvu_devlink.o rpm.o rvu_cn10k.o rvu_switch.o \
-		  rvu_sdp.o rvu_npc_hash.o mcs.o mcs_rvu_if.o mcs_cnf10kb.o
+		  rvu_sdp.o rvu_npc_hash.o mcs.o mcs_rvu_if.o mcs_cnf10kb.o \
+		  rvu_rep.o
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 10efbd56abd1..c77c02730cf9 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -143,6 +143,7 @@ M(LMTST_TBL_SETUP,	0x00a, lmtst_tbl_setup, lmtst_tbl_setup_req,    \
 				msg_rsp)				\
 M(SET_VF_PERM,		0x00b, set_vf_perm, set_vf_perm, msg_rsp)	\
 M(PTP_GET_CAP,		0x00c, ptp_get_cap, msg_req, ptp_get_cap_rsp)	\
+M(GET_REP_CNT,		0x00d, get_rep_cnt, msg_req, get_rep_cnt_rsp)	\
 /* CGX mbox IDs (range 0x200 - 0x3FF) */				\
 M(CGX_START_RXTX,	0x200, cgx_start_rxtx, msg_req, msg_rsp)	\
 M(CGX_STOP_RXTX,	0x201, cgx_stop_rxtx, msg_req, msg_rsp)		\
@@ -1524,6 +1525,13 @@ struct ptp_get_cap_rsp {
 	u64 cap;
 };
 
+struct get_rep_cnt_rsp {
+	struct mbox_msghdr hdr;
+	u16 rep_cnt;
+	u16 rep_pf_map[64];
+	u64 rsvd;
+};
+
 struct flow_msg {
 	unsigned char dmac[6];
 	unsigned char smac[6];
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index e7ff2f1b021f..1d76d52d7a5d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -593,6 +593,9 @@ struct rvu {
 	spinlock_t		cpt_intr_lock;
 
 	struct mutex		mbox_lock; /* Serialize mbox up and down msgs */
+	u16			rep_pcifunc;
+	int			rep_cnt;
+	u16			*rep2pfvf_map;
 };
 
 static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val)
@@ -821,6 +824,14 @@ bool is_sdp_pfvf(u16 pcifunc);
 bool is_sdp_pf(u16 pcifunc);
 bool is_sdp_vf(struct rvu *rvu, u16 pcifunc);
 
+static inline bool is_rep_dev(struct rvu *rvu, u16 pcifunc)
+{
+	if (rvu->rep_pcifunc && rvu->rep_pcifunc == pcifunc)
+		return true;
+
+	return false;
+}
+
 /* CGX APIs */
 static inline bool is_pf_cgxmapped(struct rvu *rvu, u8 pf)
 {
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index cb795d09971e..4ef5bb7b337f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -329,7 +329,8 @@ static bool is_valid_txschq(struct rvu *rvu, int blkaddr,
 
 	/* TLs aggegating traffic are shared across PF and VFs */
 	if (lvl >= hw->cap.nix_tx_aggr_lvl) {
-		if (rvu_get_pf(map_func) != rvu_get_pf(pcifunc))
+		if ((nix_get_tx_link(rvu, map_func) != nix_get_tx_link(rvu, pcifunc)) &&
+		    (rvu_get_pf(map_func) != rvu_get_pf(pcifunc)))
 			return false;
 		else
 			return true;
@@ -1631,6 +1632,12 @@ int rvu_mbox_handler_nix_lf_alloc(struct rvu *rvu,
 	cfg = NPC_TX_DEF_PKIND;
 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_PARSE_CFG(nixlf), cfg);
 
+	if (is_rep_dev(rvu, pcifunc)) {
+		pfvf->tx_chan_base = RVU_SWITCH_LBK_CHAN;
+		pfvf->tx_chan_cnt = 1;
+		goto exit;
+	}
+
 	intf = is_lbk_vf(rvu, pcifunc) ? NIX_INTF_TYPE_LBK : NIX_INTF_TYPE_CGX;
 	if (is_sdp_pfvf(pcifunc))
 		intf = NIX_INTF_TYPE_SDP;
@@ -1701,6 +1708,9 @@ int rvu_mbox_handler_nix_lf_free(struct rvu *rvu, struct nix_lf_free_req *req,
 	if (nixlf < 0)
 		return NIX_AF_ERR_AF_LF_INVALID;
 
+	if (is_rep_dev(rvu, pcifunc))
+		goto free_lf;
+
 	if (req->flags & NIX_LF_DISABLE_FLOWS)
 		rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
 	else
@@ -1712,6 +1722,7 @@ int rvu_mbox_handler_nix_lf_free(struct rvu *rvu, struct nix_lf_free_req *req,
 
 	nix_interface_deinit(rvu, pcifunc, nixlf);
 
+free_lf:
 	/* Reset this NIX LF */
 	err = rvu_lf_reset(rvu, block, nixlf);
 	if (err) {
@@ -2007,7 +2018,7 @@ static void nix_get_txschq_range(struct rvu *rvu, u16 pcifunc,
 	struct rvu_hwinfo *hw = rvu->hw;
 	int pf = rvu_get_pf(pcifunc);
 
-	if (is_lbk_vf(rvu, pcifunc)) { /* LBK links */
+	if (is_lbk_vf(rvu, pcifunc) || is_rep_dev(rvu, pcifunc)) { /* LBK links */
 		*start = hw->cap.nix_txsch_per_cgx_lmac * link;
 		*end = *start + hw->cap.nix_txsch_per_lbk_lmac;
 	} else if (is_pf_cgxmapped(rvu, pf)) { /* CGX links */
@@ -4519,7 +4530,7 @@ int rvu_mbox_handler_nix_set_hw_frs(struct rvu *rvu, struct nix_frs_cfg *req,
 	if (!nix_hw)
 		return NIX_AF_ERR_INVALID_NIXBLK;
 
-	if (is_lbk_vf(rvu, pcifunc))
+	if (is_lbk_vf(rvu, pcifunc) || is_rep_dev(rvu, pcifunc))
 		rvu_get_lbk_link_max_frs(rvu, &max_mtu);
 	else
 		rvu_get_lmac_link_max_frs(rvu, &max_mtu);
@@ -4547,6 +4558,8 @@ int rvu_mbox_handler_nix_set_hw_frs(struct rvu *rvu, struct nix_frs_cfg *req,
 		/* For VFs of PF0 ingress is LBK port, so config LBK link */
 		pfvf = rvu_get_pfvf(rvu, pcifunc);
 		link = hw->cgx_links + pfvf->lbkid;
+	} else if (is_rep_dev(rvu, pcifunc)) {
+		link = hw->cgx_links + 0;
 	}
 
 	if (link < 0)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
new file mode 100644
index 000000000000..d07cb356d3d6
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Admin Function driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include "rvu.h"
+#include "rvu_reg.h"
+
+int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu, struct msg_req *req,
+				 struct get_rep_cnt_rsp *rsp)
+{
+	int pf, vf, numvfs, hwvf, rep = 0;
+	u16 pcifunc;
+
+	rvu->rep_pcifunc = req->hdr.pcifunc;
+	rsp->rep_cnt = rvu->cgx_mapped_pfs + rvu->cgx_mapped_vfs;
+	rvu->rep_cnt = rsp->rep_cnt;
+
+	rvu->rep2pfvf_map = devm_kzalloc(rvu->dev, rvu->rep_cnt *
+					 sizeof(u16), GFP_KERNEL);
+	if (!rvu->rep2pfvf_map)
+		return -ENOMEM;
+
+	for (pf = 0; pf < rvu->hw->total_pfs; pf++) {
+		if (!is_pf_cgxmapped(rvu, pf))
+			continue;
+		pcifunc = pf << RVU_PFVF_PF_SHIFT;
+		rvu->rep2pfvf_map[rep] = pcifunc;
+		rsp->rep_pf_map[rep] = pcifunc;
+		rep++;
+		rvu_get_pf_numvfs(rvu, pf, &numvfs, &hwvf);
+		for (vf = 0; vf < numvfs; vf++) {
+			rvu->rep2pfvf_map[rep] = pcifunc |
+				((vf + 1) & RVU_PFVF_FUNC_MASK);
+			rsp->rep_pf_map[rep] = rvu->rep2pfvf_map[rep];
+			rep++;
+		}
+	}
+	return 0;
+}
+
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/Makefile b/drivers/net/ethernet/marvell/octeontx2/nic/Makefile
index 5664f768cb0c..69ee78dc8aad 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/Makefile
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/Makefile
@@ -5,11 +5,13 @@
 
 obj-$(CONFIG_OCTEONTX2_PF) += rvu_nicpf.o otx2_ptp.o
 obj-$(CONFIG_OCTEONTX2_VF) += rvu_nicvf.o otx2_ptp.o
+obj-$(CONFIG_RVU_ESWITCH) += rvu_rep.o
 
 rvu_nicpf-y := otx2_pf.o otx2_common.o otx2_txrx.o otx2_ethtool.o \
                otx2_flows.o otx2_tc.o cn10k.o otx2_dmac_flt.o \
                otx2_devlink.o qos_sq.o qos.o
 rvu_nicvf-y := otx2_vf.o otx2_devlink.o
+rvu_rep-y := rep.o
 
 rvu_nicpf-$(CONFIG_DCB) += otx2_dcbnl.o
 rvu_nicvf-$(CONFIG_DCB) += otx2_dcbnl.o
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index e6d7b2487ed1..79ec86035c16 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -29,6 +29,7 @@
 #include "otx2_devlink.h"
 #include <rvu_trace.h>
 #include "qos.h"
+#include "rep.h"
 
 /* IPv4 flag more fragment bit */
 #define IPV4_FLAG_MORE				0x20
@@ -439,6 +440,7 @@ struct otx2_nic {
 #define OTX2_FLAG_DMACFLTR_SUPPORT		BIT_ULL(14)
 #define OTX2_FLAG_PTP_ONESTEP_SYNC		BIT_ULL(15)
 #define OTX2_FLAG_ADPTV_INT_COAL_ENABLED BIT_ULL(16)
+#define OTX2_FLAG_REP_MODE_ENABLED		 BIT_ULL(17)
 	u64			flags;
 	u64			*cq_op_addr;
 
@@ -506,11 +508,19 @@ struct otx2_nic {
 #if IS_ENABLED(CONFIG_MACSEC)
 	struct cn10k_mcs_cfg	*macsec_cfg;
 #endif
+
+#if IS_ENABLED(CONFIG_RVU_ESWITCH)
+	struct rep_dev		**reps;
+	int			rep_cnt;
+	u16			rep_pf_map[RVU_MAX_REP];
+	u16			esw_mode;
+#endif
 };
 
 static inline bool is_otx2_lbkvf(struct pci_dev *pdev)
 {
-	return pdev->device == PCI_DEVID_OCTEONTX2_RVU_AFVF;
+	return (pdev->device == PCI_DEVID_OCTEONTX2_RVU_AFVF) ||
+		(pdev->device == PCI_DEVID_RVU_REP);
 }
 
 static inline bool is_96xx_A0(struct pci_dev *pdev)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 88886ea864cc..119c99768a85 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -1502,10 +1502,11 @@ int otx2_init_hw_resources(struct otx2_nic *pf)
 	hw->sqpool_cnt = otx2_get_total_tx_queues(pf);
 	hw->pool_cnt = hw->rqpool_cnt + hw->sqpool_cnt;
 
-	/* Maximum hardware supported transmit length */
-	pf->tx_max_pktlen = pf->netdev->max_mtu + OTX2_ETH_HLEN;
-
-	pf->rbsize = otx2_get_rbuf_size(pf, pf->netdev->mtu);
+	if (!is_rep_dev(pf->pdev)) {
+		/* Maximum hardware supported transmit length */
+		pf->tx_max_pktlen = pf->netdev->max_mtu + OTX2_ETH_HLEN;
+		pf->rbsize = otx2_get_rbuf_size(pf, pf->netdev->mtu);
+	}
 
 	mutex_lock(&mbox->lock);
 	/* NPA init */
@@ -1634,11 +1635,12 @@ void otx2_free_hw_resources(struct otx2_nic *pf)
 		otx2_pfc_txschq_stop(pf);
 #endif
 
-	otx2_clean_qos_queues(pf);
+	if (!is_rep_dev(pf->pdev))
+		otx2_clean_qos_queues(pf);
 
 	mutex_lock(&mbox->lock);
 	/* Disable backpressure */
-	if (!(pf->pcifunc & RVU_PFVF_FUNC_MASK))
+	if (!is_otx2_lbkvf(pf->pdev))
 		otx2_nix_config_bp(pf, false);
 	mutex_unlock(&mbox->lock);
 
@@ -1670,7 +1672,8 @@ void otx2_free_hw_resources(struct otx2_nic *pf)
 	otx2_free_cq_res(pf);
 
 	/* Free all ingress bandwidth profiles allocated */
-	cn10k_free_all_ipolicers(pf);
+	if (!is_rep_dev(pf->pdev))
+		cn10k_free_all_ipolicers(pf);
 
 	mutex_lock(&mbox->lock);
 	/* Reset NIX LF */
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
index 8223780fc269..2a2cfa77bd4d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
@@ -375,11 +375,13 @@ static void otx2_rcv_pkt_handler(struct otx2_nic *pfvf,
 		}
 		start += sizeof(*sg);
 	}
-	otx2_set_rxhash(pfvf, cqe, skb);
 
-	skb_record_rx_queue(skb, cq->cq_idx);
-	if (pfvf->netdev->features & NETIF_F_RXCSUM)
-		skb->ip_summed = CHECKSUM_UNNECESSARY;
+	if (!(pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)) {
+		otx2_set_rxhash(pfvf, cqe, skb);
+		skb_record_rx_queue(skb, cq->cq_idx);
+		if (pfvf->netdev->features & NETIF_F_RXCSUM)
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+	}
 
 	skb_mark_for_recycle(skb);
 
@@ -463,7 +465,11 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
 process_cqe:
 	qidx = cq->cq_idx - pfvf->hw.rx_queues;
 	sq = &pfvf->qset.sq[qidx];
-	ndev = pfvf->netdev;
+
+	if (pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)
+		ndev = pfvf->reps[qidx]->netdev;
+	else
+		ndev = pfvf->netdev;
 
 	while (likely(processed_cqe < budget) && cq->pend_cqe) {
 		cqe = (struct nix_cqe_tx_s *)otx2_get_next_cqe(cq);
@@ -500,6 +506,9 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
 
 		if (qidx >= pfvf->hw.tx_queues)
 			qidx -= pfvf->hw.xdp_queues;
+
+		if (pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)
+			qidx = 0;
 		txq = netdev_get_tx_queue(pfvf->netdev, qidx);
 		netdev_tx_completed_queue(txq, tx_pkts, tx_bytes);
 		/* Check if queue was stopped earlier due to ring full */
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
new file mode 100644
index 000000000000..b892a7fe3ddc
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -0,0 +1,221 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU representor driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/net_tstamp.h>
+
+#include "otx2_common.h"
+#include "cn10k.h"
+#include "otx2_reg.h"
+#include "rep.h"
+
+#define DRV_NAME	"rvu_rep"
+#define DRV_STRING	"Marvell RVU Representor Driver"
+
+static const struct pci_device_id rvu_rep_id_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_RVU_REP) },
+	{ }
+};
+
+MODULE_AUTHOR("Marvell International Ltd.");
+MODULE_DESCRIPTION(DRV_STRING);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
+
+static int rvu_rep_rsrc_free(struct otx2_nic *priv)
+{
+	struct otx2_qset *qset = &priv->qset;
+	int wrk;
+
+	for (wrk = 0; wrk < priv->qset.cq_cnt; wrk++)
+		cancel_delayed_work_sync(&priv->refill_wrk[wrk].pool_refill_work);
+	devm_kfree(priv->dev, priv->refill_wrk);
+
+	otx2_free_hw_resources(priv);
+	otx2_free_queue_mem(qset);
+	return 0;
+}
+
+static int rvu_rep_rsrc_init(struct otx2_nic *priv)
+{
+	struct otx2_qset *qset = &priv->qset;
+	int err = 0;
+
+	err = otx2_alloc_queue_mem(priv);
+	if (err)
+		return err;
+
+	priv->hw.max_mtu = otx2_get_max_mtu(priv);
+	priv->tx_max_pktlen = priv->hw.max_mtu + OTX2_ETH_HLEN;
+	priv->rbsize = ALIGN(priv->hw.rbuf_len, OTX2_ALIGN) + OTX2_HEAD_ROOM;
+
+	err = otx2_init_hw_resources(priv);
+	if (err)
+		goto err_free_rsrc;
+
+	/* Set maximum frame size allowed in HW */
+	err = otx2_hw_set_mtu(priv, priv->hw.max_mtu);
+	if (err) {
+		dev_err(priv->dev, "Failed to set HW MTU\n");
+		goto err_free_rsrc;
+	}
+	return 0;
+
+err_free_rsrc:
+	otx2_free_hw_resources(priv);
+	otx2_free_queue_mem(qset);
+	return err;
+}
+
+static int rvu_get_rep_cnt(struct otx2_nic *priv)
+{
+	struct get_rep_cnt_rsp *rsp;
+	struct mbox_msghdr *msghdr;
+	struct msg_req *req;
+	int err, rep;
+
+	mutex_lock(&priv->mbox.lock);
+	req = otx2_mbox_alloc_msg_get_rep_cnt(&priv->mbox);
+	if (!req) {
+		mutex_unlock(&priv->mbox.lock);
+		return -ENOMEM;
+	}
+	err = otx2_sync_mbox_msg(&priv->mbox);
+	if (err)
+		goto exit;
+
+	msghdr = otx2_mbox_get_rsp(&priv->mbox.mbox, 0, &req->hdr);
+	if (IS_ERR(msghdr)) {
+		err = PTR_ERR(rsp);
+		goto exit;
+	}
+
+	rsp = (struct get_rep_cnt_rsp *)msghdr;
+	priv->hw.tx_queues = rsp->rep_cnt;
+	priv->hw.rx_queues = rsp->rep_cnt;
+	priv->rep_cnt = rsp->rep_cnt;
+	for (rep = 0; rep < priv->rep_cnt; rep++)
+		priv->rep_pf_map[rep] = rsp->rep_pf_map[rep];
+
+exit:
+	mutex_unlock(&priv->mbox.lock);
+	return err;
+}
+
+static int rvu_rep_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct device *dev = &pdev->dev;
+	struct otx2_nic *priv;
+	struct otx2_hw *hw;
+	int err;
+
+	err = pcim_enable_device(pdev);
+	if (err) {
+		dev_err(dev, "Failed to enable PCI device\n");
+		return err;
+	}
+
+	err = pci_request_regions(pdev, DRV_NAME);
+	if (err) {
+		dev_err(dev, "PCI request regions failed 0x%x\n", err);
+		return err;
+	}
+
+	err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
+	if (err) {
+		dev_err(dev, "DMA mask config failed, abort\n");
+		goto err_release_regions;
+	}
+
+	pci_set_master(pdev);
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+	pci_set_drvdata(pdev, priv);
+	priv->pdev = pdev;
+	priv->dev = dev;
+	priv->flags |= OTX2_FLAG_INTF_DOWN;
+	priv->flags |= OTX2_FLAG_REP_MODE_ENABLED;
+
+	hw = &priv->hw;
+	hw->pdev = pdev;
+	hw->max_queues = OTX2_MAX_CQ_CNT;
+	hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN;
+	hw->xqe_size = 128;
+
+	err = otx2_init_rsrc(pdev, priv);
+	if (err)
+		goto err_release_regions;
+
+	err = rvu_get_rep_cnt(priv);
+	if (err)
+		goto err_detach_rsrc;
+
+	err = rvu_rep_rsrc_init(priv);
+	if (err)
+		goto err_detach_rsrc;
+
+	return 0;
+
+err_detach_rsrc:
+	if (priv->hw.lmt_info)
+		free_percpu(priv->hw.lmt_info);
+	if (test_bit(CN10K_LMTST, &priv->hw.cap_flag))
+		qmem_free(priv->dev, priv->dync_lmt);
+	otx2_detach_resources(&priv->mbox);
+	otx2_disable_mbox_intr(priv);
+	otx2_pfaf_mbox_destroy(priv);
+	pci_free_irq_vectors(pdev);
+err_release_regions:
+	pci_set_drvdata(pdev, NULL);
+	pci_release_regions(pdev);
+	return err;
+}
+
+static void rvu_rep_remove(struct pci_dev *pdev)
+{
+	struct otx2_nic *priv = pci_get_drvdata(pdev);
+
+	rvu_rep_rsrc_free(priv);
+	otx2_detach_resources(&priv->mbox);
+	if (priv->hw.lmt_info)
+		free_percpu(priv->hw.lmt_info);
+	if (test_bit(CN10K_LMTST, &priv->hw.cap_flag))
+		qmem_free(priv->dev, priv->dync_lmt);
+	otx2_disable_mbox_intr(priv);
+	otx2_pfaf_mbox_destroy(priv);
+	pci_free_irq_vectors(priv->pdev);
+	pci_set_drvdata(pdev, NULL);
+	pci_release_regions(pdev);
+}
+
+static struct pci_driver rvu_rep_driver = {
+	.name = DRV_NAME,
+	.id_table = rvu_rep_id_table,
+	.probe = rvu_rep_probe,
+	.remove = rvu_rep_remove,
+	.shutdown = rvu_rep_remove,
+};
+
+static int __init rvu_rep_init_module(void)
+{
+	pr_info("%s: %s\n", DRV_NAME, DRV_STRING);
+
+	return pci_register_driver(&rvu_rep_driver);
+}
+
+static void __exit rvu_rep_cleanup_module(void)
+{
+	pci_unregister_driver(&rvu_rep_driver);
+}
+
+module_init(rvu_rep_init_module);
+module_exit(rvu_rep_cleanup_module);
+
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
new file mode 100644
index 000000000000..30cce17eb48b
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell RVU REPRESENTOR driver
+ *
+ * Copyright (C) 2024 Marvell.
+ *
+ */
+
+#ifndef REP_H
+#define REP_H
+
+#include <linux/pci.h>
+
+#include "otx2_reg.h"
+#include "otx2_txrx.h"
+#include "otx2_common.h"
+
+#define PCI_DEVID_RVU_REP	0xA0E0
+
+#define RVU_MAX_REP	OTX2_MAX_CQ_CNT
+struct rep_dev {
+	struct otx2_nic *mdev;
+	struct net_device *netdev;
+	u16 rep_id;
+	u16 pcifunc;
+};
+
+static inline bool is_rep_dev(struct pci_dev *pdev)
+{
+	return pdev->device == PCI_DEVID_RVU_REP;
+}
+
+#endif /* REP_H */
-- 
2.25.1

[net-next PATCH 3/9] octeontx2-pf: Create representor netdev

[Geetha sowjanya]

Adds initial devlink support to set/get the switchdev mode.
Representor netdevs are created for each rvu devices when
the switch mode is set to 'switchdev'. These netdevs are
be used to control and configure VFs.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
---
 .../marvell/octeontx2/nic/otx2_devlink.c      |  48 ++++++
 .../net/ethernet/marvell/octeontx2/nic/rep.c  | 159 ++++++++++++++++++
 .../net/ethernet/marvell/octeontx2/nic/rep.h  |   2 +
 3 files changed, 209 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c
index 4e1130496573..f4f5f5d93c7e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c
@@ -76,7 +76,53 @@ static const struct devlink_param otx2_dl_params[] = {
 			     otx2_dl_mcam_count_validate),
 };
 
+#ifdef CONFIG_RVU_ESWITCH
+static int otx2_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
+{
+	struct otx2_devlink *otx2_dl = devlink_priv(devlink);
+	struct otx2_nic *pfvf = otx2_dl->pfvf;
+
+	if (!is_rep_dev(pfvf->pdev))
+		return -EOPNOTSUPP;
+
+	*mode = pfvf->esw_mode;
+
+	return 0;
+}
+
+static int otx2_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
+					 struct netlink_ext_ack *extack)
+{
+	struct otx2_devlink *otx2_dl = devlink_priv(devlink);
+	struct otx2_nic *pfvf = otx2_dl->pfvf;
+
+	if (!is_rep_dev(pfvf->pdev))
+		return -EOPNOTSUPP;
+
+	if (pfvf->esw_mode == mode)
+		return 0;
+
+	pfvf->esw_mode = mode;
+	switch (mode) {
+	case DEVLINK_ESWITCH_MODE_LEGACY:
+		rvu_rep_destroy(pfvf);
+		break;
+	case DEVLINK_ESWITCH_MODE_SWITCHDEV:
+		rvu_rep_create(pfvf);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+#endif
+
 static const struct devlink_ops otx2_devlink_ops = {
+#ifdef CONFIG_RVU_ESWITCH
+	.eswitch_mode_get = otx2_devlink_eswitch_mode_get,
+	.eswitch_mode_set = otx2_devlink_eswitch_mode_set,
+#endif
 };
 
 int otx2_register_dl(struct otx2_nic *pfvf)
@@ -112,6 +158,7 @@ int otx2_register_dl(struct otx2_nic *pfvf)
 	devlink_free(dl);
 	return err;
 }
+EXPORT_SYMBOL(otx2_register_dl);
 
 void otx2_unregister_dl(struct otx2_nic *pfvf)
 {
@@ -123,3 +170,4 @@ void otx2_unregister_dl(struct otx2_nic *pfvf)
 				  ARRAY_SIZE(otx2_dl_params));
 	devlink_free(dl);
 }
+EXPORT_SYMBOL(otx2_unregister_dl);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index b892a7fe3ddc..fd55ef40c934 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -28,6 +28,159 @@ MODULE_DESCRIPTION(DRV_STRING);
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
 
+static int rvu_rep_napi_init(struct otx2_nic *priv)
+{
+	struct otx2_cq_poll *cq_poll = NULL;
+	struct otx2_qset *qset = &priv->qset;
+	struct otx2_hw *hw = &priv->hw;
+	int err = 0, qidx, vec;
+	char *irq_name;
+
+	qset->napi = kcalloc(hw->cint_cnt, sizeof(*cq_poll), GFP_KERNEL);
+	if (!qset->napi)
+		return -ENOMEM;
+
+	/* Register NAPI handler */
+	for (qidx = 0; qidx < hw->cint_cnt; qidx++) {
+		cq_poll = &qset->napi[qidx];
+		cq_poll->cint_idx = qidx;
+		cq_poll->cq_ids[CQ_RX] =
+			(qidx <  hw->rx_queues) ? qidx : CINT_INVALID_CQ;
+		cq_poll->cq_ids[CQ_TX] = (qidx < hw->tx_queues) ?
+					  qidx + hw->rx_queues : CINT_INVALID_CQ;
+		cq_poll->cq_ids[CQ_XDP] = CINT_INVALID_CQ;
+		cq_poll->cq_ids[CQ_QOS] = CINT_INVALID_CQ;
+
+		cq_poll->dev = (void *)priv;
+		netif_napi_add(priv->reps[qidx]->netdev, &cq_poll->napi,
+			       otx2_napi_handler);
+		napi_enable(&cq_poll->napi);
+	}
+	/* Register CQ IRQ handlers */
+	vec = hw->nix_msixoff + NIX_LF_CINT_VEC_START;
+	for (qidx = 0; qidx < hw->cint_cnt; qidx++) {
+		irq_name = &hw->irq_name[vec * NAME_SIZE];
+
+		snprintf(irq_name, NAME_SIZE, "rep%d-rxtx-%d", qidx, qidx);
+
+		err = request_irq(pci_irq_vector(priv->pdev, vec),
+				  otx2_cq_intr_handler, 0, irq_name,
+				  &qset->napi[qidx]);
+		if (err) {
+			dev_err(priv->dev,
+				"RVU REP IRQ registration failed for CQ%d\n", qidx);
+			goto err_free_cints;
+		}
+		vec++;
+
+		/* Enable CQ IRQ */
+		otx2_write64(priv, NIX_LF_CINTX_INT(qidx), BIT_ULL(0));
+		otx2_write64(priv, NIX_LF_CINTX_ENA_W1S(qidx), BIT_ULL(0));
+	}
+	priv->flags &= ~OTX2_FLAG_INTF_DOWN;
+	return 0;
+
+err_free_cints:
+	otx2_free_cints(priv, qidx);
+	otx2_disable_napi(priv);
+	return err;
+}
+
+static void rvu_rep_free_cq_rsrc(struct otx2_nic *priv)
+{
+	struct otx2_cq_poll *cq_poll = NULL;
+	struct otx2_qset *qset = &priv->qset;
+	int qidx, vec;
+
+	/* Cleanup CQ NAPI and IRQ */
+	vec = priv->hw.nix_msixoff + NIX_LF_CINT_VEC_START;
+	for (qidx = 0; qidx < priv->hw.cint_cnt; qidx++) {
+		/* Disable interrupt */
+		otx2_write64(priv, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0));
+
+		synchronize_irq(pci_irq_vector(priv->pdev, vec));
+
+		cq_poll = &qset->napi[qidx];
+		napi_synchronize(&cq_poll->napi);
+		vec++;
+	}
+	otx2_free_cints(priv, priv->hw.cint_cnt);
+	otx2_disable_napi(priv);
+}
+
+static void rvu_rep_free_netdev(struct otx2_nic *priv)
+{
+	struct rep_dev *rep;
+	int rep_id;
+
+	for (rep_id = 0; rep_id < priv->rep_cnt; rep_id++) {
+		rep = priv->reps[rep_id];
+		if (rep && rep->netdev->netdev_ops) {
+			unregister_netdev(rep->netdev);
+			free_netdev(rep->netdev);
+		}
+	}
+	devm_kfree(priv->dev, priv->reps);
+}
+
+void rvu_rep_destroy(struct otx2_nic *priv)
+{
+	rvu_rep_free_cq_rsrc(priv);
+	rvu_rep_free_netdev(priv);
+}
+
+int rvu_rep_create(struct otx2_nic *priv)
+{
+	int rep_cnt = priv->rep_cnt;
+	struct net_device *ndev;
+	struct rep_dev *rep;
+	int rep_id, err;
+	u16 pcifunc;
+
+	priv->reps = devm_kcalloc(priv->dev, rep_cnt, sizeof(struct rep_dev), GFP_KERNEL);
+	if (!priv->reps)
+		return -ENOMEM;
+
+	for (rep_id = 0; rep_id < rep_cnt; rep_id++) {
+		ndev = alloc_etherdev(sizeof(*rep));
+		if (!ndev) {
+			dev_err(priv->dev, "PFVF representor:%d creation failed\n", rep_id);
+			err = -ENOMEM;
+			goto exit;
+		}
+
+		rep = netdev_priv(ndev);
+		priv->reps[rep_id] = rep;
+		rep->mdev = priv;
+		rep->netdev = ndev;
+		rep->rep_id = rep_id;
+
+		ndev->min_mtu = OTX2_MIN_MTU;
+		ndev->max_mtu = priv->hw.max_mtu;
+		pcifunc = priv->rep_pf_map[rep_id];
+		rep->pcifunc = pcifunc;
+
+		snprintf(ndev->name, sizeof(ndev->name), "r%dp%dv%d", rep_id,
+			 rvu_get_pf(pcifunc), (pcifunc & RVU_PFVF_FUNC_MASK));
+
+		eth_hw_addr_random(ndev);
+		if (register_netdev(ndev)) {
+			dev_err(priv->dev, "PFVF reprentator registration failed\n");
+			free_netdev(ndev);
+			ndev->netdev_ops = NULL;
+			goto exit;
+		}
+	}
+	err = rvu_rep_napi_init(priv);
+	if (err)
+		goto exit;
+
+	return 0;
+exit:
+	rvu_rep_free_netdev(priv);
+	return err;
+}
+
 static int rvu_rep_rsrc_free(struct otx2_nic *priv)
 {
 	struct otx2_qset *qset = &priv->qset;
@@ -162,6 +315,10 @@ static int rvu_rep_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (err)
 		goto err_detach_rsrc;
 
+	err = otx2_register_dl(priv);
+	if (err)
+		goto err_detach_rsrc;
+
 	return 0;
 
 err_detach_rsrc:
@@ -183,6 +340,8 @@ static void rvu_rep_remove(struct pci_dev *pdev)
 {
 	struct otx2_nic *priv = pci_get_drvdata(pdev);
 
+	otx2_unregister_dl(priv);
+	rvu_rep_destroy(priv);
 	rvu_rep_rsrc_free(priv);
 	otx2_detach_resources(&priv->mbox);
 	if (priv->hw.lmt_info)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
index 30cce17eb48b..be6c939e5cba 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
@@ -29,4 +29,6 @@ static inline bool is_rep_dev(struct pci_dev *pdev)
 	return pdev->device == PCI_DEVID_RVU_REP;
 }
 
+int rvu_rep_create(struct otx2_nic *priv);
+void rvu_rep_destroy(struct otx2_nic *priv);
 #endif /* REP_H */
-- 
2.25.1

[net-next PATCH 4/9] octeontx2-pf: Add basic net_device_ops

[Geetha sowjanya]

Implements basic set of net_device_ops.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
---
 .../net/ethernet/marvell/octeontx2/nic/rep.c  | 46 +++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index fd55ef40c934..187b00156bcd 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -28,6 +28,51 @@ MODULE_DESCRIPTION(DRV_STRING);
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
 
+static netdev_tx_t rvu_rep_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+	struct otx2_nic *pf = rep->mdev;
+	struct otx2_snd_queue *sq;
+	struct netdev_queue *txq;
+
+	sq = &pf->qset.sq[rep->rep_id];
+	txq = netdev_get_tx_queue(dev, 0);
+
+	if (!otx2_sq_append_skb(pf, txq, sq, skb, rep->rep_id)) {
+		netif_tx_stop_queue(txq);
+
+		/* Check again, incase SQBs got freed up */
+		smp_mb();
+		if (((sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb)
+							> sq->sqe_thresh)
+			netif_tx_wake_queue(txq);
+
+		return NETDEV_TX_BUSY;
+	}
+	return NETDEV_TX_OK;
+}
+
+static int rvu_rep_open(struct net_device *dev)
+{
+	netif_carrier_on(dev);
+	netif_tx_start_all_queues(dev);
+	return 0;
+}
+
+static int rvu_rep_stop(struct net_device *dev)
+{
+	netif_carrier_off(dev);
+	netif_tx_disable(dev);
+
+	return 0;
+}
+
+static const struct net_device_ops rvu_rep_netdev_ops = {
+	.ndo_open		= rvu_rep_open,
+	.ndo_stop		= rvu_rep_stop,
+	.ndo_start_xmit		= rvu_rep_xmit,
+};
+
 static int rvu_rep_napi_init(struct otx2_nic *priv)
 {
 	struct otx2_cq_poll *cq_poll = NULL;
@@ -157,6 +202,7 @@ int rvu_rep_create(struct otx2_nic *priv)
 
 		ndev->min_mtu = OTX2_MIN_MTU;
 		ndev->max_mtu = priv->hw.max_mtu;
+		ndev->netdev_ops = &rvu_rep_netdev_ops;
 		pcifunc = priv->rep_pf_map[rep_id];
 		rep->pcifunc = pcifunc;
 
-- 
2.25.1

[net-next PATCH 5/9] octeontx2-af: Add packet path between representor and VF

[Geetha sowjanya]

This patch installs tcam rules to stree traffic representors
and VF when swicthdev mode is set. To support this a HW loopback
channel is reserved. Through this channel packet are routed
between representor and VFs. "ESW_CFG" mbox is defined to
notify AF for installing rules.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
---
 .../net/ethernet/marvell/octeontx2/af/mbox.h  |   7 +
 .../net/ethernet/marvell/octeontx2/af/rvu.h   |   7 +-
 .../marvell/octeontx2/af/rvu_devlink.c        |   6 +
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   |   7 +-
 .../ethernet/marvell/octeontx2/af/rvu_rep.c   | 241 +++++++++++++++++-
 .../marvell/octeontx2/af/rvu_switch.c         |  18 +-
 .../net/ethernet/marvell/octeontx2/nic/rep.c  |  19 ++
 7 files changed, 297 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index c77c02730cf9..3b36da28a8f4 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -144,6 +144,7 @@ M(LMTST_TBL_SETUP,	0x00a, lmtst_tbl_setup, lmtst_tbl_setup_req,    \
 M(SET_VF_PERM,		0x00b, set_vf_perm, set_vf_perm, msg_rsp)	\
 M(PTP_GET_CAP,		0x00c, ptp_get_cap, msg_req, ptp_get_cap_rsp)	\
 M(GET_REP_CNT,		0x00d, get_rep_cnt, msg_req, get_rep_cnt_rsp)	\
+M(ESW_CFG,		0x00e, esw_cfg, esw_cfg_req, msg_rsp)	\
 /* CGX mbox IDs (range 0x200 - 0x3FF) */				\
 M(CGX_START_RXTX,	0x200, cgx_start_rxtx, msg_req, msg_rsp)	\
 M(CGX_STOP_RXTX,	0x201, cgx_stop_rxtx, msg_req, msg_rsp)		\
@@ -1532,6 +1533,12 @@ struct get_rep_cnt_rsp {
 	u64 rsvd;
 };
 
+struct esw_cfg_req {
+	struct mbox_msghdr hdr;
+	u8 ena;
+	u64 rsvd;
+};
+
 struct flow_msg {
 	unsigned char dmac[6];
 	unsigned char smac[6];
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index 1d76d52d7a5d..c8572d79a968 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -596,6 +596,7 @@ struct rvu {
 	u16			rep_pcifunc;
 	int			rep_cnt;
 	u16			*rep2pfvf_map;
+	u8			rep_mode;
 };
 
 static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val)
@@ -1025,7 +1026,7 @@ int rvu_ndc_fix_locked_cacheline(struct rvu *rvu, int blkaddr);
 /* RVU Switch */
 void rvu_switch_enable(struct rvu *rvu);
 void rvu_switch_disable(struct rvu *rvu);
-void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc);
+void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc, bool ena);
 void rvu_switch_enable_lbk_link(struct rvu *rvu, u16 pcifunc, bool ena);
 
 int rvu_npc_set_parse_mode(struct rvu *rvu, u16 pcifunc, u64 mode, u8 dir,
@@ -1039,4 +1040,8 @@ int rvu_mcs_flr_handler(struct rvu *rvu, u16 pcifunc);
 void rvu_mcs_ptp_cfg(struct rvu *rvu, u8 rpm_id, u8 lmac_id, bool ena);
 void rvu_mcs_exit(struct rvu *rvu);
 
+/* Representor APIs */
+int rvu_rep_pf_init(struct rvu *rvu);
+int rvu_rep_install_mcam_rules(struct rvu *rvu);
+void rvu_rep_update_rules(struct rvu *rvu, u16 pcifunc, bool ena);
 #endif /* RVU_H */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
index 96c04f7d93f8..8a3b7fb61883 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
@@ -1464,6 +1464,9 @@ static int rvu_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
 	struct rvu *rvu = rvu_dl->rvu;
 	struct rvu_switch *rswitch;
 
+	if (rvu->rep_mode)
+		return -EOPNOTSUPP;
+
 	rswitch = &rvu->rswitch;
 	*mode = rswitch->mode;
 
@@ -1477,6 +1480,9 @@ static int rvu_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
 	struct rvu *rvu = rvu_dl->rvu;
 	struct rvu_switch *rswitch;
 
+	if (rvu->rep_mode)
+		return -EOPNOTSUPP;
+
 	rswitch = &rvu->rswitch;
 	switch (mode) {
 	case DEVLINK_ESWITCH_MODE_LEGACY:
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 4ef5bb7b337f..75d5c1bc00e1 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -2738,7 +2738,7 @@ void rvu_nix_tx_tl2_cfg(struct rvu *rvu, int blkaddr, u16 pcifunc,
 	int schq;
 	u64 cfg;
 
-	if (!is_pf_cgxmapped(rvu, pf))
+	if (!is_pf_cgxmapped(rvu, pf) && !is_rep_dev(rvu, pcifunc))
 		return;
 
 	cfg = enable ? (BIT_ULL(12) | RVU_SWITCH_LBK_CHAN) : 0;
@@ -4368,8 +4368,6 @@ int rvu_mbox_handler_nix_set_mac_addr(struct rvu *rvu,
 	if (test_bit(PF_SET_VF_TRUSTED, &pfvf->flags) && from_vf)
 		ether_addr_copy(pfvf->default_mac, req->mac_addr);
 
-	rvu_switch_update_rules(rvu, pcifunc);
-
 	return 0;
 }
 
@@ -5159,7 +5157,7 @@ int rvu_mbox_handler_nix_lf_start_rx(struct rvu *rvu, struct msg_req *req,
 	pfvf = rvu_get_pfvf(rvu, pcifunc);
 	set_bit(NIXLF_INITIALIZED, &pfvf->flags);
 
-	rvu_switch_update_rules(rvu, pcifunc);
+	rvu_switch_update_rules(rvu, pcifunc, true);
 
 	return rvu_cgx_start_stop_io(rvu, pcifunc, true);
 }
@@ -5187,6 +5185,7 @@ int rvu_mbox_handler_nix_lf_stop_rx(struct rvu *rvu, struct msg_req *req,
 	if (err)
 		return err;
 
+	rvu_switch_update_rules(rvu, pcifunc, false);
 	rvu_cgx_tx_enable(rvu, pcifunc, true);
 
 	return 0;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
index d07cb356d3d6..5c015e8dfbbe 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
@@ -13,6 +13,246 @@
 #include "rvu.h"
 #include "rvu_reg.h"
 
+static u16 rvu_rep_get_vlan_id(struct rvu *rvu, u16 pcifunc)
+{
+	int id;
+
+	for (id = 0; id < rvu->rep_cnt; id++)
+		if (rvu->rep2pfvf_map[id] == pcifunc)
+			return id;
+	return -ENODEV;
+}
+
+static int rvu_rep_tx_vlan_cfg(struct rvu *rvu,  u16 pcifunc,
+			       u16 vlan_tci, int *vidx)
+{
+	struct nix_vtag_config req = {0};
+	struct nix_vtag_config_rsp rsp = {0};
+	u64 etype = ETH_P_8021Q;
+	int err;
+
+	/* Insert vlan tag */
+	req.hdr.pcifunc = pcifunc;
+	req.vtag_size = VTAGSIZE_T4;
+	req.cfg_type = 0; /* tx vlan cfg */
+	req.tx.cfg_vtag0 = true;
+	req.tx.vtag0 = etype << 48 | ntohs(vlan_tci);
+
+	err = rvu_mbox_handler_nix_vtag_cfg(rvu, &req, &rsp);
+	if (err) {
+		dev_err(rvu->dev, "Tx vlan config failed\n");
+		return err;
+	}
+	*vidx = rsp.vtag0_idx;
+	return 0;
+}
+
+static int rvu_rep_rx_vlan_cfg(struct rvu *rvu, u16 pcifunc)
+{
+	struct nix_vtag_config req = {0};
+	struct nix_vtag_config_rsp rsp;
+
+	/* config strip, capture and size */
+	req.hdr.pcifunc = pcifunc;
+	req.vtag_size = VTAGSIZE_T4;
+	req.cfg_type = 1; /* rx vlan cfg */
+	req.rx.vtag_type = NIX_AF_LFX_RX_VTAG_TYPE0;
+	req.rx.strip_vtag = true;
+	req.rx.capture_vtag = false;
+
+	return rvu_mbox_handler_nix_vtag_cfg(rvu, &req, &rsp);
+}
+
+static int rvu_rep_install_rx_rule(struct rvu *rvu, u16 pcifunc,
+				   u16 entry, bool rte)
+{
+	struct npc_install_flow_req req = { 0 };
+	struct npc_install_flow_rsp rsp = { 0 };
+	struct rvu_pfvf *pfvf;
+	u16 vlan_tci, rep_id;
+
+	pfvf = rvu_get_pfvf(rvu, pcifunc);
+
+	/* To stree the traffic from Representee to Representor */
+	rep_id = (u16)rvu_rep_get_vlan_id(rvu, pcifunc);
+	if (rte) {
+		vlan_tci = rep_id | 0x1ull << 8;
+		req.vf = rvu->rep_pcifunc;
+		req.op = NIX_RX_ACTIONOP_UCAST;
+		req.index = rep_id;
+	} else {
+		vlan_tci = rep_id;
+		req.vf = pcifunc;
+		req.op = NIX_RX_ACTION_DEFAULT;
+	}
+
+	rvu_rep_rx_vlan_cfg(rvu, req.vf);
+	req.entry = entry;
+	req.hdr.pcifunc = 0; /* AF is requester */
+	req.features = BIT_ULL(NPC_OUTER_VID) | BIT_ULL(NPC_VLAN_ETYPE_CTAG);
+	req.vtag0_valid = true;
+	req.vtag0_type = NIX_AF_LFX_RX_VTAG_TYPE0;
+	req.packet.vlan_etype = ETH_P_8021Q;
+	req.mask.vlan_etype = ETH_P_8021Q;
+	req.packet.vlan_tci = vlan_tci;
+	req.mask.vlan_tci = 0xffff;
+
+	req.channel = RVU_SWITCH_LBK_CHAN;
+	req.chan_mask = 0xffff;
+	req.intf = pfvf->nix_rx_intf;
+
+	return rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
+}
+
+static int rvu_rep_install_tx_rule(struct rvu *rvu, u16 pcifunc, u16 entry,
+				   bool rte)
+{
+	struct npc_install_flow_req req = { 0 };
+	struct npc_install_flow_rsp rsp = { 0 };
+	struct rvu_pfvf *pfvf;
+	int vidx, err;
+	u16 vlan_tci;
+	u8 lbkid;
+
+	pfvf = rvu_get_pfvf(rvu, pcifunc);
+	vlan_tci = rvu_rep_get_vlan_id(rvu, pcifunc);
+	if (rte)
+		vlan_tci |= 0x1ull << 8;
+
+	err = rvu_rep_tx_vlan_cfg(rvu, pcifunc, vlan_tci, &vidx);
+	if (err)
+		return err;
+
+	lbkid = pfvf->nix_blkaddr == BLKADDR_NIX0 ? 0 : 1;
+	req.hdr.pcifunc = 0; /* AF is requester */
+	if (rte) {
+		req.vf = pcifunc;
+	} else {
+		req.vf = rvu->rep_pcifunc;
+		req.packet.sq_id = vlan_tci;
+		req.mask.sq_id = 0xffff;
+	}
+
+	req.entry = entry;
+	req.intf = pfvf->nix_tx_intf;
+	req.op = NIX_TX_ACTIONOP_UCAST_CHAN;
+	req.index = (lbkid << 8) | RVU_SWITCH_LBK_CHAN;
+	req.set_cntr = 1;
+	req.vtag0_def = vidx;
+	req.vtag0_op = 1;
+	return rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
+}
+
+int rvu_rep_install_mcam_rules(struct rvu *rvu)
+{
+	struct rvu_switch *rswitch = &rvu->rswitch;
+	u16 start = rswitch->start_entry;
+	struct rvu_hwinfo *hw = rvu->hw;
+	u16 pcifunc, entry = 0;
+	int pf, vf, numvfs;
+	int err, nixlf, i;
+	u8 rep;
+
+	for (pf = 1; pf < hw->total_pfs; pf++) {
+		if (!is_pf_cgxmapped(rvu, pf))
+			continue;
+
+		pcifunc = pf << RVU_PFVF_PF_SHIFT;
+		rvu_get_nix_blkaddr(rvu, pcifunc);
+		rep = true;
+		for (i = 0; i < 2; i++) {
+			err = rvu_rep_install_rx_rule(rvu, pcifunc, start + entry, rep);
+			if (err)
+				return err;
+			rswitch->entry2pcifunc[entry++] = pcifunc;
+
+			err = rvu_rep_install_tx_rule(rvu, pcifunc, start + entry, rep);
+			if (err)
+				return err;
+			rswitch->entry2pcifunc[entry++] = pcifunc;
+			rep = false;
+		}
+
+		rvu_get_pf_numvfs(rvu, pf, &numvfs, NULL);
+		for (vf = 0; vf < numvfs; vf++) {
+			pcifunc = pf << RVU_PFVF_PF_SHIFT |
+				  ((vf + 1) & RVU_PFVF_FUNC_MASK);
+			rvu_get_nix_blkaddr(rvu, pcifunc);
+
+			/* Skip installimg rules if nixlf is not attached */
+			err = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
+			if (err)
+				continue;
+			rep = true;
+			for (i = 0; i < 2; i++) {
+				err = rvu_rep_install_rx_rule(rvu, pcifunc, start + entry, rep);
+				if (err)
+					return err;
+				rswitch->entry2pcifunc[entry++] = pcifunc;
+
+				err = rvu_rep_install_tx_rule(rvu, pcifunc, start + entry, rep);
+				if (err)
+					return err;
+				rswitch->entry2pcifunc[entry++] = pcifunc;
+				rep = false;
+			}
+		}
+	}
+	return 0;
+}
+
+void rvu_rep_update_rules(struct rvu *rvu, u16 pcifunc, bool ena)
+{
+	struct rvu_switch *rswitch = &rvu->rswitch;
+	struct npc_mcam *mcam = &rvu->hw->mcam;
+	u32 max = rswitch->used_entries;
+	int blkaddr;
+	u16 entry;
+
+	if (!rswitch->used_entries)
+		return;
+
+	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
+
+	if (blkaddr < 0)
+		return;
+
+	rvu_switch_enable_lbk_link(rvu, pcifunc, ena);
+	mutex_lock(&mcam->lock);
+	for (entry = 0; entry < max; entry++) {
+		if (rswitch->entry2pcifunc[entry] == pcifunc)
+			npc_enable_mcam_entry(rvu, mcam, blkaddr, entry, ena);
+	}
+	mutex_unlock(&mcam->lock);
+}
+
+int rvu_rep_pf_init(struct rvu *rvu)
+{
+	u16 pcifunc = rvu->rep_pcifunc;
+	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
+
+	set_bit(NIXLF_INITIALIZED, &pfvf->flags);
+	rvu_switch_enable_lbk_link(rvu, pcifunc, true);
+	rvu_rep_rx_vlan_cfg(rvu, pcifunc);
+	return 0;
+}
+
+int rvu_mbox_handler_esw_cfg(struct rvu *rvu, struct esw_cfg_req *req,
+			     struct msg_rsp *rsp)
+{
+	if (req->hdr.pcifunc != rvu->rep_pcifunc)
+		return 0;
+
+	rvu->rep_mode = req->ena;
+
+	if (req->ena)
+		rvu_switch_enable(rvu);
+	else
+		rvu_switch_disable(rvu);
+
+	return 0;
+}
+
 int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu, struct msg_req *req,
 				 struct get_rep_cnt_rsp *rsp)
 {
@@ -45,4 +285,3 @@ int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu, struct msg_req *req,
 	}
 	return 0;
 }
-
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
index ceb81eebf65e..268efb7c1c15 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
@@ -166,6 +166,8 @@ void rvu_switch_enable(struct rvu *rvu)
 
 	alloc_req.contig = true;
 	alloc_req.count = rvu->cgx_mapped_pfs + rvu->cgx_mapped_vfs;
+	if (rvu->rep_mode)
+		alloc_req.count = alloc_req.count * 4;
 	ret = rvu_mbox_handler_npc_mcam_alloc_entry(rvu, &alloc_req,
 						    &alloc_rsp);
 	if (ret) {
@@ -189,7 +191,12 @@ void rvu_switch_enable(struct rvu *rvu)
 	rswitch->used_entries = alloc_rsp.count;
 	rswitch->start_entry = alloc_rsp.entry;
 
-	ret = rvu_switch_install_rules(rvu);
+	if (rvu->rep_mode) {
+		rvu_rep_pf_init(rvu);
+		ret = rvu_rep_install_mcam_rules(rvu);
+	} else {
+		ret = rvu_switch_install_rules(rvu);
+	}
 	if (ret)
 		goto uninstall_rules;
 
@@ -222,6 +229,9 @@ void rvu_switch_disable(struct rvu *rvu)
 	if (!rswitch->used_entries)
 		return;
 
+	if (rvu->rep_mode)
+		goto free_ents;
+
 	for (pf = 1; pf < hw->total_pfs; pf++) {
 		if (!is_pf_cgxmapped(rvu, pf))
 			continue;
@@ -249,6 +259,7 @@ void rvu_switch_disable(struct rvu *rvu)
 		}
 	}
 
+free_ents:
 	uninstall_req.start = rswitch->start_entry;
 	uninstall_req.end =  rswitch->start_entry + rswitch->used_entries - 1;
 	free_req.all = 1;
@@ -258,12 +269,15 @@ void rvu_switch_disable(struct rvu *rvu)
 	kfree(rswitch->entry2pcifunc);
 }
 
-void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc)
+void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc, bool ena)
 {
 	struct rvu_switch *rswitch = &rvu->rswitch;
 	u32 max = rswitch->used_entries;
 	u16 entry;
 
+	if (rvu->rep_mode)
+		return rvu_rep_update_rules(rvu, pcifunc, ena);
+
 	if (!rswitch->used_entries)
 		return;
 
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index 187b00156bcd..1329617f8d6f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -28,6 +28,22 @@ MODULE_DESCRIPTION(DRV_STRING);
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
 
+static int rvu_eswitch_config(struct otx2_nic *priv, u8 ena)
+{
+	struct esw_cfg_req *req;
+
+	mutex_lock(&priv->mbox.lock);
+	req = otx2_mbox_alloc_msg_esw_cfg(&priv->mbox);
+	if (!req) {
+		mutex_unlock(&priv->mbox.lock);
+		return -ENOMEM;
+	}
+	req->ena = ena;
+	otx2_sync_mbox_msg(&priv->mbox);
+	mutex_unlock(&priv->mbox.lock);
+	return 0;
+}
+
 static netdev_tx_t rvu_rep_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct rep_dev *rep = netdev_priv(dev);
@@ -170,6 +186,8 @@ static void rvu_rep_free_netdev(struct otx2_nic *priv)
 
 void rvu_rep_destroy(struct otx2_nic *priv)
 {
+	/* Remove mcam rules */
+	rvu_eswitch_config(priv, false);
 	rvu_rep_free_cq_rsrc(priv);
 	rvu_rep_free_netdev(priv);
 }
@@ -221,6 +239,7 @@ int rvu_rep_create(struct otx2_nic *priv)
 	if (err)
 		goto exit;
 
+	rvu_eswitch_config(priv, true);
 	return 0;
 exit:
 	rvu_rep_free_netdev(priv);
-- 
2.25.1

[net-next PATCH 6/9] octeontx2-pf: Get VF stats via representor

[Geetha sowjanya]

This patch add support to export VF port statistics via representor
netdev. Defines new mbox "NIX_LF_STATS" to fetch VF hw stats.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
---
 .../net/ethernet/marvell/octeontx2/af/mbox.h  | 32 ++++++++++
 .../ethernet/marvell/octeontx2/af/rvu_rep.c   | 43 +++++++++++++
 .../net/ethernet/marvell/octeontx2/nic/rep.c  | 64 +++++++++++++++++++
 .../net/ethernet/marvell/octeontx2/nic/rep.h  | 14 ++++
 4 files changed, 153 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 3b36da28a8f4..b7f250d218d9 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -320,6 +320,7 @@ M(NIX_MCAST_GRP_DESTROY, 0x802c, nix_mcast_grp_destroy, nix_mcast_grp_destroy_re
 M(NIX_MCAST_GRP_UPDATE, 0x802d, nix_mcast_grp_update,				\
 				nix_mcast_grp_update_req,			\
 				nix_mcast_grp_update_rsp)			\
+M(NIX_LF_STATS, 0x802e, nix_lf_stats, nix_stats_req, nix_stats_rsp)	\
 /* MCS mbox IDs (range 0xA000 - 0xBFFF) */					\
 M(MCS_ALLOC_RESOURCES,	0xa000, mcs_alloc_resources, mcs_alloc_rsrc_req,	\
 				mcs_alloc_rsrc_rsp)				\
@@ -1365,6 +1366,37 @@ struct nix_bandprof_get_hwinfo_rsp {
 	u32 policer_timeunit;
 };
 
+struct nix_stats_req {
+	struct mbox_msghdr hdr;
+	u8 reset;
+	u16 pcifunc;
+	u64 rsvd;
+};
+
+struct nix_stats_rsp {
+	struct mbox_msghdr hdr;
+	u16 pcifunc;
+	struct {
+		u64 octs;
+		u64 ucast;
+		u64 bcast;
+		u64 mcast;
+		u64 drop;
+		u64 drop_octs;
+		u64 drop_mcast;
+		u64 drop_bcast;
+		u64 err;
+		u64 rsvd[5];
+	} rx;
+	struct {
+		u64 ucast;
+		u64 bcast;
+		u64 mcast;
+		u64 drop;
+		u64 octs;
+	} tx;
+};
+
 /* NPC mbox message structs */
 
 #define NPC_MCAM_ENTRY_INVALID	0xFFFF
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
index 5c015e8dfbbe..103d1d451411 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
@@ -13,6 +13,49 @@
 #include "rvu.h"
 #include "rvu_reg.h"
 
+#define RVU_LF_RX_STATS(reg) \
+		rvu_read64(rvu, blkaddr, NIX_AF_LFX_RX_STATX(nixlf, reg))
+
+#define RVU_LF_TX_STATS(reg) \
+		rvu_read64(rvu, blkaddr, NIX_AF_LFX_TX_STATX(nixlf, reg))
+
+int rvu_mbox_handler_nix_lf_stats(struct rvu *rvu,
+				  struct nix_stats_req *req,
+				  struct nix_stats_rsp *rsp)
+{
+	u16 pcifunc = req->pcifunc;
+	int nixlf, blkaddr, err;
+	struct msg_req rst_req;
+	struct msg_rsp rst_rsp;
+
+	err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
+	if (err)
+		return 0;
+
+	if (req->reset) {
+		rst_req.hdr.pcifunc = pcifunc;
+		return rvu_mbox_handler_nix_stats_rst(rvu, &rst_req, &rst_rsp);
+	}
+	rsp->rx.octs = RVU_LF_RX_STATS(RX_OCTS);
+	rsp->rx.ucast = RVU_LF_RX_STATS(RX_UCAST);
+	rsp->rx.bcast = RVU_LF_RX_STATS(RX_BCAST);
+	rsp->rx.mcast = RVU_LF_RX_STATS(RX_MCAST);
+	rsp->rx.drop = RVU_LF_RX_STATS(RX_DROP);
+	rsp->rx.err = RVU_LF_RX_STATS(RX_ERR);
+	rsp->rx.drop_octs = RVU_LF_RX_STATS(RX_DROP_OCTS);
+	rsp->rx.drop_mcast = RVU_LF_RX_STATS(RX_DRP_MCAST);
+	rsp->rx.drop_bcast = RVU_LF_RX_STATS(RX_DRP_BCAST);
+
+	rsp->tx.octs = RVU_LF_TX_STATS(TX_OCTS);
+	rsp->tx.ucast = RVU_LF_TX_STATS(TX_UCAST);
+	rsp->tx.bcast = RVU_LF_TX_STATS(TX_BCAST);
+	rsp->tx.mcast = RVU_LF_TX_STATS(TX_MCAST);
+	rsp->tx.drop = RVU_LF_TX_STATS(TX_DROP);
+
+	rsp->pcifunc = req->pcifunc;
+	return 0;
+}
+
 static u16 rvu_rep_get_vlan_id(struct rvu *rvu, u16 pcifunc)
 {
 	int id;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index 1329617f8d6f..3a6a85ae47e5 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -28,6 +28,67 @@ MODULE_DESCRIPTION(DRV_STRING);
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
 
+static void rvu_rep_get_stats(struct work_struct *work)
+{
+	struct delayed_work *del_work = to_delayed_work(work);
+	struct nix_stats_req *req;
+	struct nix_stats_rsp *rsp;
+	struct rep_stats *stats;
+	struct otx2_nic *priv;
+	struct rep_dev *rep;
+	int err;
+
+	rep = container_of(del_work, struct rep_dev, stats_wrk);
+	priv = rep->mdev;
+
+	mutex_lock(&priv->mbox.lock);
+	req = otx2_mbox_alloc_msg_nix_lf_stats(&priv->mbox);
+	if (!req) {
+		mutex_unlock(&priv->mbox.lock);
+		return;
+	}
+	req->pcifunc = rep->pcifunc;
+	err = otx2_sync_mbox_msg_busy_poll(&priv->mbox);
+	if (err)
+		goto exit;
+
+	rsp = (struct nix_stats_rsp *)
+	      otx2_mbox_get_rsp(&priv->mbox.mbox, 0, &req->hdr);
+
+	if (IS_ERR(rsp)) {
+		err = PTR_ERR(rsp);
+		goto exit;
+	}
+
+	stats = &rep->stats;
+	stats->rx_bytes = rsp->rx.octs;
+	stats->rx_frames = rsp->rx.ucast + rsp->rx.bcast +
+			    rsp->rx.mcast;
+	stats->rx_drops = rsp->rx.drop;
+	stats->rx_mcast_frames = rsp->rx.mcast;
+	stats->tx_bytes = rsp->tx.octs;
+	stats->tx_frames = rsp->tx.ucast + rsp->tx.bcast + rsp->tx.mcast;
+	stats->tx_drops = rsp->tx.drop;
+exit:
+	mutex_unlock(&priv->mbox.lock);
+}
+
+static void rvu_rep_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+
+	stats->rx_packets = rep->stats.rx_frames;
+	stats->rx_bytes = rep->stats.rx_bytes;
+	stats->rx_dropped = rep->stats.rx_drops;
+	stats->multicast = rep->stats.rx_mcast_frames;
+
+	stats->tx_packets = rep->stats.tx_frames;
+	stats->tx_bytes = rep->stats.tx_bytes;
+	stats->tx_dropped = rep->stats.tx_drops;
+
+	schedule_delayed_work(&rep->stats_wrk, msecs_to_jiffies(100));
+}
+
 static int rvu_eswitch_config(struct otx2_nic *priv, u8 ena)
 {
 	struct esw_cfg_req *req;
@@ -87,6 +148,7 @@ static const struct net_device_ops rvu_rep_netdev_ops = {
 	.ndo_open		= rvu_rep_open,
 	.ndo_stop		= rvu_rep_stop,
 	.ndo_start_xmit		= rvu_rep_xmit,
+	.ndo_get_stats64	= rvu_rep_get_stats64,
 };
 
 static int rvu_rep_napi_init(struct otx2_nic *priv)
@@ -234,6 +296,8 @@ int rvu_rep_create(struct otx2_nic *priv)
 			ndev->netdev_ops = NULL;
 			goto exit;
 		}
+
+		INIT_DELAYED_WORK(&rep->stats_wrk, rvu_rep_get_stats);
 	}
 	err = rvu_rep_napi_init(priv);
 	if (err)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
index be6c939e5cba..9526b886b173 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
@@ -17,9 +17,23 @@
 #define PCI_DEVID_RVU_REP	0xA0E0
 
 #define RVU_MAX_REP	OTX2_MAX_CQ_CNT
+
+struct rep_stats {
+	u64 rx_bytes;
+	u64 rx_frames;
+	u64 rx_drops;
+	u64 rx_mcast_frames;
+
+	u64 tx_bytes;
+	u64 tx_frames;
+	u64 tx_drops;
+};
+
 struct rep_dev {
 	struct otx2_nic *mdev;
 	struct net_device *netdev;
+	struct rep_stats stats;
+	struct delayed_work stats_wrk;
 	u16 rep_id;
 	u16 pcifunc;
 };
-- 
2.25.1

[net-next PATCH 7/9] octeontx2-pf: Add support to sync link state between representor and VFs

[Geetha sowjanya]

Implements mbox function to sync the link state between VFs and
its representors. Same mbox is use to notify other updates like mtu etc.

This patch enables
- Reflecting the link state of representor based on the VF state and
 link state of VF based on representor.
- On VF interface up/down a notification is sent via mbox to representor
  to update the link state.
- On representor interafce up/down will cause the link state update of VF.

Signed-off-by: Harman Kalra <hkalra@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
---
 .../net/ethernet/marvell/octeontx2/af/mbox.h  |  25 ++++
 .../net/ethernet/marvell/octeontx2/af/rvu.h   |  11 ++
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   |   6 +
 .../ethernet/marvell/octeontx2/af/rvu_rep.c   | 127 ++++++++++++++++++
 .../marvell/octeontx2/nic/otx2_common.h       |   2 +
 .../ethernet/marvell/octeontx2/nic/otx2_pf.c  |  30 +++++
 .../net/ethernet/marvell/octeontx2/nic/rep.c  |  76 +++++++++++
 .../net/ethernet/marvell/octeontx2/nic/rep.h  |   3 +
 8 files changed, 280 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index b7f250d218d9..8f099b05ba10 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -145,6 +145,7 @@ M(SET_VF_PERM,		0x00b, set_vf_perm, set_vf_perm, msg_rsp)	\
 M(PTP_GET_CAP,		0x00c, ptp_get_cap, msg_req, ptp_get_cap_rsp)	\
 M(GET_REP_CNT,		0x00d, get_rep_cnt, msg_req, get_rep_cnt_rsp)	\
 M(ESW_CFG,		0x00e, esw_cfg, esw_cfg_req, msg_rsp)	\
+M(REP_EVENT_NOTIFY,     0x00f, rep_event_notify, rep_event, msg_rsp) \
 /* CGX mbox IDs (range 0x200 - 0x3FF) */				\
 M(CGX_START_RXTX,	0x200, cgx_start_rxtx, msg_req, msg_rsp)	\
 M(CGX_STOP_RXTX,	0x201, cgx_stop_rxtx, msg_req, msg_rsp)		\
@@ -382,12 +383,16 @@ M(CPT_INST_LMTST,	0xD00, cpt_inst_lmtst, cpt_inst_lmtst_req, msg_rsp)
 #define MBOX_UP_MCS_MESSAGES						\
 M(MCS_INTR_NOTIFY,	0xE00, mcs_intr_notify, mcs_intr_info, msg_rsp)
 
+#define MBOX_UP_REP_MESSAGES						\
+M(REP_EVENT_UP_NOTIFY,	0xEF0, rep_event_up_notify, rep_event, msg_rsp) \
+
 enum {
 #define M(_name, _id, _1, _2, _3) MBOX_MSG_ ## _name = _id,
 MBOX_MESSAGES
 MBOX_UP_CGX_MESSAGES
 MBOX_UP_CPT_MESSAGES
 MBOX_UP_MCS_MESSAGES
+MBOX_UP_REP_MESSAGES
 #undef M
 };
 
@@ -1571,6 +1576,26 @@ struct esw_cfg_req {
 	u64 rsvd;
 };
 
+struct rep_evt_data {
+	u8 port_state;
+	u8 vf_state;
+	u16 rx_mode;
+	u16 rx_flags;
+	u16 mtu;
+	u64 rsvd[5];
+};
+
+struct rep_event {
+	struct mbox_msghdr hdr;
+	u16 pcifunc;
+#define RVU_EVENT_PORT_STATE		BIT_ULL(0)
+#define RVU_EVENT_PFVF_STATE		BIT_ULL(1)
+#define RVU_EVENT_MTU_CHANGE		BIT_ULL(2)
+#define RVU_EVENT_RX_MODE_CHANGE	BIT_ULL(3)
+	u16 event;
+	struct rep_evt_data evt_data;
+};
+
 struct flow_msg {
 	unsigned char dmac[6];
 	unsigned char smac[6];
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index c8572d79a968..7556ce0a772e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -512,6 +512,11 @@ struct rvu_switch {
 	u16 start_entry;
 };
 
+struct rep_evtq_ent {
+	struct list_head node;
+	struct rep_event event;
+};
+
 struct rvu {
 	void __iomem		*afreg_base;
 	void __iomem		*pfreg_base;
@@ -597,6 +602,11 @@ struct rvu {
 	int			rep_cnt;
 	u16			*rep2pfvf_map;
 	u8			rep_mode;
+	struct			work_struct rep_evt_work;
+	struct			workqueue_struct *rep_evt_wq;
+	struct list_head	rep_evtq_head;
+	/* Representor event lock */
+	spinlock_t		rep_evtq_lock;
 };
 
 static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val)
@@ -1044,4 +1054,5 @@ void rvu_mcs_exit(struct rvu *rvu);
 int rvu_rep_pf_init(struct rvu *rvu);
 int rvu_rep_install_mcam_rules(struct rvu *rvu);
 void rvu_rep_update_rules(struct rvu *rvu, u16 pcifunc, bool ena);
+int rvu_rep_notify_pfvf_state(struct rvu *rvu, u16 pcifunc, bool enable);
 #endif /* RVU_H */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 75d5c1bc00e1..6a1602dc11d7 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -379,6 +379,9 @@ static int nix_interface_init(struct rvu *rvu, u16 pcifunc, int type, int nixlf,
 		cgx_set_pkind(rvu_cgx_pdata(cgx_id, rvu), lmac_id, pkind);
 		rvu_npc_set_pkind(rvu, pkind, pfvf);
 
+		if (rvu->rep_mode)
+			rvu_rep_notify_pfvf_state(rvu, pcifunc, true);
+
 		break;
 	case NIX_INTF_TYPE_LBK:
 		vf = (pcifunc & RVU_PFVF_FUNC_MASK) - 1;
@@ -515,6 +518,9 @@ static void nix_interface_deinit(struct rvu *rvu, u16 pcifunc, u8 nixlf)
 
 	/* Disable DMAC filters used */
 	rvu_cgx_disable_dmac_entries(rvu, pcifunc);
+
+	if (rvu->rep_mode)
+		rvu_rep_notify_pfvf_state(rvu, pcifunc, false);
 }
 
 #define NIX_BPIDS_PER_LMAC	8
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
index 103d1d451411..2013a4a0afd0 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
@@ -13,6 +13,124 @@
 #include "rvu.h"
 #include "rvu_reg.h"
 
+#define M(_name, _id, _fn_name, _req_type, _rsp_type)			\
+static struct _req_type __maybe_unused					\
+*otx2_mbox_alloc_msg_ ## _fn_name(struct rvu *rvu, int devid)		\
+{									\
+	struct _req_type *req;						\
+									\
+	req = (struct _req_type *)otx2_mbox_alloc_msg_rsp(		\
+		&rvu->afpf_wq_info.mbox_up, devid, sizeof(struct _req_type), \
+		sizeof(struct _rsp_type));				\
+	if (!req)							\
+		return NULL;						\
+	req->hdr.sig = OTX2_MBOX_REQ_SIG;				\
+	req->hdr.id = _id;						\
+	return req;							\
+}
+
+MBOX_UP_REP_MESSAGES
+#undef M
+
+static int rvu_rep_up_notify(struct rvu *rvu, struct rep_event *event)
+{
+	struct rep_event *msg;
+	int pf;
+
+	pf = rvu_get_pf(event->pcifunc);
+
+	mutex_lock(&rvu->mbox_lock);
+	msg = otx2_mbox_alloc_msg_rep_event_up_notify(rvu, pf);
+	if (!msg) {
+		mutex_unlock(&rvu->mbox_lock);
+		return -ENOMEM;
+	}
+
+	msg->hdr.pcifunc = event->pcifunc;
+	msg->event = event->event;
+
+	memcpy(&msg->evt_data, &event->evt_data, sizeof(struct rep_evt_data));
+
+	otx2_mbox_wait_for_zero(&rvu->afpf_wq_info.mbox_up, pf);
+
+	otx2_mbox_msg_send_up(&rvu->afpf_wq_info.mbox_up, pf);
+
+	mutex_unlock(&rvu->mbox_lock);
+	return 0;
+}
+
+static void rvu_rep_wq_handler(struct work_struct *work)
+{
+	struct rvu *rvu = container_of(work, struct rvu, rep_evt_work);
+	struct rep_evtq_ent *qentry;
+	struct rep_event *event;
+	unsigned long flags;
+
+	do {
+		spin_lock_irqsave(&rvu->rep_evtq_lock, flags);
+		qentry = list_first_entry_or_null(&rvu->rep_evtq_head,
+						  struct rep_evtq_ent,
+						  node);
+		if (qentry)
+			list_del(&qentry->node);
+
+		spin_unlock_irqrestore(&rvu->rep_evtq_lock, flags);
+		if (!qentry)
+			break; /* nothing more to process */
+
+		event = &qentry->event;
+
+		rvu_rep_up_notify(rvu, event);
+		kfree(qentry);
+	} while (1);
+}
+
+int rvu_mbox_handler_rep_event_notify(struct rvu *rvu, struct rep_event *req,
+				      struct msg_rsp *rsp)
+{
+	struct rep_evtq_ent *qentry;
+
+	qentry = kmalloc(sizeof(*qentry), GFP_ATOMIC);
+	if (!qentry)
+		return -ENOMEM;
+
+	qentry->event = *req;
+	spin_lock(&rvu->rep_evtq_lock);
+	list_add_tail(&qentry->node, &rvu->rep_evtq_head);
+	spin_unlock(&rvu->rep_evtq_lock);
+	queue_work(rvu->rep_evt_wq, &rvu->rep_evt_work);
+	return 0;
+}
+
+int rvu_rep_notify_pfvf_state(struct rvu *rvu, u16 pcifunc, bool enable)
+{
+	struct rep_event *req;
+	int pf;
+
+	if (!is_pf_cgxmapped(rvu, rvu_get_pf(pcifunc)))
+		return 0;
+
+	pf = rvu_get_pf(rvu->rep_pcifunc);
+
+	mutex_lock(&rvu->mbox_lock);
+	req = otx2_mbox_alloc_msg_rep_event_up_notify(rvu, pf);
+	if (!req) {
+		mutex_unlock(&rvu->mbox_lock);
+		return -ENOMEM;
+	}
+
+	req->hdr.pcifunc = rvu->rep_pcifunc;
+	req->event |= RVU_EVENT_PFVF_STATE;
+	req->pcifunc = pcifunc;
+	req->evt_data.vf_state = enable;
+
+	otx2_mbox_wait_for_zero(&rvu->afpf_wq_info.mbox_up, pf);
+	otx2_mbox_msg_send_up(&rvu->afpf_wq_info.mbox_up, pf);
+
+	mutex_unlock(&rvu->mbox_lock);
+	return 0;
+}
+
 #define RVU_LF_RX_STATS(reg) \
 		rvu_read64(rvu, blkaddr, NIX_AF_LFX_RX_STATX(nixlf, reg))
 
@@ -241,6 +359,15 @@ int rvu_rep_install_mcam_rules(struct rvu *rvu)
 			}
 		}
 	}
+
+	/* Initialize the wq for handling REP events */
+	INIT_LIST_HEAD(&rvu->rep_evtq_head);
+	INIT_WORK(&rvu->rep_evt_work, rvu_rep_wq_handler);
+	rvu->rep_evt_wq = alloc_workqueue("rep_evt_wq", 0, 0);
+	if (!rvu->rep_evt_wq) {
+		dev_err(rvu->dev, "REP workqueue allocation failed\n");
+		return -ENOMEM;
+	}
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index 79ec86035c16..865d5d3146a9 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -441,6 +441,7 @@ struct otx2_nic {
 #define OTX2_FLAG_PTP_ONESTEP_SYNC		BIT_ULL(15)
 #define OTX2_FLAG_ADPTV_INT_COAL_ENABLED BIT_ULL(16)
 #define OTX2_FLAG_REP_MODE_ENABLED		 BIT_ULL(17)
+#define OTX2_FLAG_PORT_UP			BIT_ULL(18)
 	u64			flags;
 	u64			*cq_op_addr;
 
@@ -1125,4 +1126,5 @@ u16 otx2_select_queue(struct net_device *netdev, struct sk_buff *skb,
 int otx2_get_txq_by_classid(struct otx2_nic *pfvf, u16 classid);
 void otx2_qos_config_txschq(struct otx2_nic *pfvf);
 void otx2_clean_qos_queues(struct otx2_nic *pfvf);
+int rvu_event_up_notify(struct otx2_nic *pf, struct rep_event *info);
 #endif /* OTX2_COMMON_H */
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 119c99768a85..2a1bc8cdea19 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -519,6 +519,7 @@ static void otx2_pfvf_mbox_up_handler(struct work_struct *work)
 
 		switch (msg->id) {
 		case MBOX_MSG_CGX_LINK_EVENT:
+		case MBOX_MSG_REP_EVENT_UP_NOTIFY:
 			break;
 		default:
 			if (msg->rc)
@@ -832,6 +833,9 @@ static void otx2_handle_link_event(struct otx2_nic *pf)
 	struct cgx_link_user_info *linfo = &pf->linfo;
 	struct net_device *netdev = pf->netdev;
 
+	if (pf->flags & OTX2_FLAG_PORT_UP)
+		return;
+
 	pr_info("%s NIC Link is %s %d Mbps %s duplex\n", netdev->name,
 		linfo->link_up ? "UP" : "DOWN", linfo->speed,
 		linfo->full_duplex ? "Full" : "Half");
@@ -844,6 +848,30 @@ static void otx2_handle_link_event(struct otx2_nic *pf)
 	}
 }
 
+static int otx2_mbox_up_handler_rep_event_up_notify(struct otx2_nic *pf,
+						    struct rep_event *info,
+						    struct msg_rsp *rsp)
+{
+	struct net_device *netdev = pf->netdev;
+
+	if (info->event == RVU_EVENT_PORT_STATE) {
+		if (info->evt_data.port_state) {
+			pf->flags |= OTX2_FLAG_PORT_UP;
+			netif_carrier_on(netdev);
+			netif_tx_start_all_queues(netdev);
+		} else {
+			pf->flags &= ~OTX2_FLAG_PORT_UP;
+			netif_tx_stop_all_queues(netdev);
+			netif_carrier_off(netdev);
+		}
+		return 0;
+	}
+#ifdef CONFIG_RVU_ESWITCH
+	rvu_event_up_notify(pf, info);
+#endif
+	return 0;
+}
+
 int otx2_mbox_up_handler_mcs_intr_notify(struct otx2_nic *pf,
 					 struct mcs_intr_info *event,
 					 struct msg_rsp *rsp)
@@ -913,6 +941,7 @@ static int otx2_process_mbox_msg_up(struct otx2_nic *pf,
 	}
 MBOX_UP_CGX_MESSAGES
 MBOX_UP_MCS_MESSAGES
+MBOX_UP_REP_MESSAGES
 #undef M
 		break;
 	default:
@@ -1967,6 +1996,7 @@ int otx2_open(struct net_device *netdev)
 	}
 
 	pf->flags &= ~OTX2_FLAG_INTF_DOWN;
+	pf->flags &= ~OTX2_FLAG_PORT_UP;
 	/* 'intf_down' may be checked on any cpu */
 	smp_wmb();
 
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index 3a6a85ae47e5..2677a229a9e7 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -28,6 +28,57 @@ MODULE_DESCRIPTION(DRV_STRING);
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
 
+static int rvu_rep_get_repid(struct otx2_nic *priv, u16 pcifunc)
+{
+	int rep_id;
+
+	for (rep_id = 0; rep_id < priv->rep_cnt; rep_id++)
+		if (priv->rep_pf_map[rep_id] == pcifunc)
+			return rep_id;
+	return -EINVAL;
+}
+
+static int rvu_rep_notify_pfvf(struct otx2_nic *priv, u16 event,
+			       struct rep_event *data)
+{
+	struct rep_event *req;
+
+	mutex_lock(&priv->mbox.lock);
+	req = otx2_mbox_alloc_msg_rep_event_notify(&priv->mbox);
+	if (!req) {
+		mutex_unlock(&priv->mbox.lock);
+		return -ENOMEM;
+	}
+	req->event = event;
+	req->pcifunc = data->pcifunc;
+
+	memcpy(&req->evt_data, &data->evt_data, sizeof(struct rep_evt_data));
+	otx2_sync_mbox_msg(&priv->mbox);
+	mutex_unlock(&priv->mbox.lock);
+	return 0;
+}
+
+static void rvu_rep_state_evt_handler(struct otx2_nic *priv,
+				      struct rep_event *info)
+{
+	struct rep_dev *rep;
+	int rep_id;
+
+	rep_id = rvu_rep_get_repid(priv, info->pcifunc);
+	rep = priv->reps[rep_id];
+	if (info->evt_data.vf_state)
+		rep->flags |= RVU_REP_VF_INITIALIZED;
+	else
+		rep->flags &= ~RVU_REP_VF_INITIALIZED;
+}
+
+int rvu_event_up_notify(struct otx2_nic *pf, struct rep_event *info)
+{
+	if (info->event & RVU_EVENT_PFVF_STATE)
+		rvu_rep_state_evt_handler(pf, info);
+	return 0;
+}
+
 static void rvu_rep_get_stats(struct work_struct *work)
 {
 	struct delayed_work *del_work = to_delayed_work(work);
@@ -77,6 +128,9 @@ static void rvu_rep_get_stats64(struct net_device *dev, struct rtnl_link_stats64
 {
 	struct rep_dev *rep = netdev_priv(dev);
 
+	if (!(rep->flags & RVU_REP_VF_INITIALIZED))
+		return;
+
 	stats->rx_packets = rep->stats.rx_frames;
 	stats->rx_bytes = rep->stats.rx_bytes;
 	stats->rx_dropped = rep->stats.rx_drops;
@@ -131,16 +185,38 @@ static netdev_tx_t rvu_rep_xmit(struct sk_buff *skb, struct net_device *dev)
 
 static int rvu_rep_open(struct net_device *dev)
 {
+	struct rep_dev *rep = netdev_priv(dev);
+	struct otx2_nic *priv = rep->mdev;
+	struct rep_event evt = {0};
+
+	if (!(rep->flags & RVU_REP_VF_INITIALIZED))
+		return 0;
+
 	netif_carrier_on(dev);
 	netif_tx_start_all_queues(dev);
+
+	evt.event = RVU_EVENT_PORT_STATE;
+	evt.evt_data.port_state = 1;
+	evt.pcifunc = rep->pcifunc;
+	rvu_rep_notify_pfvf(priv, RVU_EVENT_PORT_STATE, &evt);
 	return 0;
 }
 
 static int rvu_rep_stop(struct net_device *dev)
 {
+	struct rep_dev *rep = netdev_priv(dev);
+	struct otx2_nic *priv = rep->mdev;
+	struct rep_event evt = {0};
+
+	if (!(rep->flags & RVU_REP_VF_INITIALIZED))
+		return 0;
+
 	netif_carrier_off(dev);
 	netif_tx_disable(dev);
 
+	evt.event = RVU_EVENT_PORT_STATE;
+	evt.pcifunc = rep->pcifunc;
+	rvu_rep_notify_pfvf(priv, RVU_EVENT_PORT_STATE, &evt);
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
index 9526b886b173..c0bbb383ab88 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
@@ -36,6 +36,8 @@ struct rep_dev {
 	struct delayed_work stats_wrk;
 	u16 rep_id;
 	u16 pcifunc;
+#define RVU_REP_VF_INITIALIZED		BIT_ULL(0)
+	u8 flags;
 };
 
 static inline bool is_rep_dev(struct pci_dev *pdev)
@@ -45,4 +47,5 @@ static inline bool is_rep_dev(struct pci_dev *pdev)
 
 int rvu_rep_create(struct otx2_nic *priv);
 void rvu_rep_destroy(struct otx2_nic *priv);
+int rvu_event_up_notify(struct otx2_nic *pf, struct rep_event *info);
 #endif /* REP_H */
-- 
2.25.1

[net-next PATCH 8/9] octeontx2-pf: Configure VF mtu via representor

[Geetha sowjanya]

Add support to manage the mtu configuration for VF through representor.
On update of representor mtu a mbox notification is send
to VF to update its mtu.

Signed-off-by: Sai Krishna <saikrishnag@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
---
 .../ethernet/marvell/octeontx2/nic/otx2_pf.c    |  5 +++++
 .../net/ethernet/marvell/octeontx2/nic/rep.c    | 17 +++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 2a1bc8cdea19..8fc26a95a871 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -854,6 +854,11 @@ static int otx2_mbox_up_handler_rep_event_up_notify(struct otx2_nic *pf,
 {
 	struct net_device *netdev = pf->netdev;
 
+	if (info->event == RVU_EVENT_MTU_CHANGE) {
+		netdev->mtu = info->evt_data.mtu;
+		return 0;
+	}
+
 	if (info->event == RVU_EVENT_PORT_STATE) {
 		if (info->evt_data.port_state) {
 			pf->flags |= OTX2_FLAG_PORT_UP;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index 2677a229a9e7..a2941e3d16be 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -79,6 +79,22 @@ int rvu_event_up_notify(struct otx2_nic *pf, struct rep_event *info)
 	return 0;
 }
 
+static int rvu_rep_change_mtu(struct net_device *dev, int new_mtu)
+{
+	struct rep_dev *rep = netdev_priv(dev);
+	struct otx2_nic *priv = rep->mdev;
+	struct rep_event evt = {0};
+
+	netdev_info(dev, "Changing MTU from %d to %d\n",
+		    dev->mtu, new_mtu);
+	dev->mtu = new_mtu;
+
+	evt.evt_data.mtu = new_mtu;
+	evt.pcifunc = rep->pcifunc;
+	rvu_rep_notify_pfvf(priv, RVU_EVENT_MTU_CHANGE, &evt);
+	return 0;
+}
+
 static void rvu_rep_get_stats(struct work_struct *work)
 {
 	struct delayed_work *del_work = to_delayed_work(work);
@@ -225,6 +241,7 @@ static const struct net_device_ops rvu_rep_netdev_ops = {
 	.ndo_stop		= rvu_rep_stop,
 	.ndo_start_xmit		= rvu_rep_xmit,
 	.ndo_get_stats64	= rvu_rep_get_stats64,
+	.ndo_change_mtu		= rvu_rep_change_mtu,
 };
 
 static int rvu_rep_napi_init(struct otx2_nic *priv)
-- 
2.25.1

[net-next PATCH 9/9] octeontx2-pf: Add representors for sdp MAC

[Geetha sowjanya]

Current silicons support 2 types of MACs, SDP and
RPM MAC.  This patch adds representors for SDP MAC
interfaces.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
---
 .../ethernet/marvell/octeontx2/nic/cn10k.c    |  4 +-
 .../ethernet/marvell/octeontx2/nic/cn10k.h    |  2 +-
 .../marvell/octeontx2/nic/otx2_common.c       | 47 ++++++++++++++-----
 .../marvell/octeontx2/nic/otx2_common.h       | 26 +++++++---
 .../ethernet/marvell/octeontx2/nic/otx2_pf.c  | 13 +++--
 .../ethernet/marvell/octeontx2/nic/otx2_reg.h |  1 +
 .../ethernet/marvell/octeontx2/nic/otx2_vf.c  | 11 ++++-
 7 files changed, 79 insertions(+), 25 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c
index c1c99d7054f8..777e123e69c7 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.c
@@ -72,7 +72,7 @@ int cn10k_lmtst_init(struct otx2_nic *pfvf)
 }
 EXPORT_SYMBOL(cn10k_lmtst_init);
 
-int cn10k_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura)
+int cn10k_sq_aq_init(void *dev, u16 qidx, u8 chan_offset, u16 sqb_aura)
 {
 	struct nix_cn10k_aq_enq_req *aq;
 	struct otx2_nic *pfvf = dev;
@@ -88,7 +88,7 @@ int cn10k_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura)
 	aq->sq.ena = 1;
 	aq->sq.smq = otx2_get_smq_idx(pfvf, qidx);
 	aq->sq.smq_rr_weight = mtu_to_dwrr_weight(pfvf, pfvf->tx_max_pktlen);
-	aq->sq.default_chan = pfvf->hw.tx_chan_base;
+	aq->sq.default_chan = pfvf->hw.tx_chan_base + chan_offset;
 	aq->sq.sqe_stype = NIX_STYPE_STF; /* Cache SQB */
 	aq->sq.sqb_aura = sqb_aura;
 	aq->sq.sq_int_ena = NIX_SQINT_BITS;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.h b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.h
index c1861f7de254..e3f0bce9908f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/cn10k.h
@@ -26,7 +26,7 @@ static inline int mtu_to_dwrr_weight(struct otx2_nic *pfvf, int mtu)
 
 int cn10k_refill_pool_ptrs(void *dev, struct otx2_cq_queue *cq);
 void cn10k_sqe_flush(void *dev, struct otx2_snd_queue *sq, int size, int qidx);
-int cn10k_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura);
+int cn10k_sq_aq_init(void *dev, u16 qidx, u8 chan_offset, u16 sqb_aura);
 int cn10k_lmtst_init(struct otx2_nic *pfvf);
 int cn10k_free_all_ipolicers(struct otx2_nic *pfvf);
 int cn10k_alloc_matchall_ipolicer(struct otx2_nic *pfvf);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index 4b53af087cb4..f0f0d18ab302 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -253,7 +253,7 @@ int otx2_config_pause_frm(struct otx2_nic *pfvf)
 	struct cgx_pause_frm_cfg *req;
 	int err;
 
-	if (is_otx2_lbkvf(pfvf->pdev))
+	if (is_otx2_lbkvf(pfvf->pdev) || is_otx2_sdp_rep(pfvf->pdev))
 		return 0;
 
 	mutex_lock(&pfvf->mbox.lock);
@@ -647,12 +647,21 @@ int otx2_txschq_config(struct otx2_nic *pfvf, int lvl, int prio, bool txschq_for
 		req->reg[2] = NIX_AF_MDQX_SCHEDULE(schq);
 		req->regval[2] =  dwrr_val;
 	} else if (lvl == NIX_TXSCH_LVL_TL4) {
+		int sdp_chan =  hw->tx_chan_base + prio;
+
+		if (is_otx2_sdp_rep(pfvf->pdev))
+			prio = 0;
 		parent = schq_list[NIX_TXSCH_LVL_TL3][prio];
 		req->reg[0] = NIX_AF_TL4X_PARENT(schq);
 		req->regval[0] = parent << 16;
 		req->num_regs++;
 		req->reg[1] = NIX_AF_TL4X_SCHEDULE(schq);
 		req->regval[1] = dwrr_val;
+		if (is_otx2_sdp_rep(pfvf->pdev)) {
+			req->num_regs++;
+			req->reg[2] = NIX_AF_TL4X_SDP_LINK_CFG(schq);
+			req->regval[2] = BIT_ULL(12) | BIT_ULL(13) | (sdp_chan & 0xff);
+		}
 	} else if (lvl == NIX_TXSCH_LVL_TL3) {
 		parent = schq_list[NIX_TXSCH_LVL_TL2][prio];
 		req->reg[0] = NIX_AF_TL3X_PARENT(schq);
@@ -660,7 +669,7 @@ int otx2_txschq_config(struct otx2_nic *pfvf, int lvl, int prio, bool txschq_for
 		req->num_regs++;
 		req->reg[1] = NIX_AF_TL3X_SCHEDULE(schq);
 		req->regval[1] = dwrr_val;
-		if (lvl == hw->txschq_link_cfg_lvl) {
+		if (lvl == hw->txschq_link_cfg_lvl && !is_otx2_sdp_rep(pfvf->pdev)) {
 			req->num_regs++;
 			req->reg[2] = NIX_AF_TL3_TL2X_LINKX_CFG(schq, hw->tx_link);
 			/* Enable this queue and backpressure
@@ -677,7 +686,7 @@ int otx2_txschq_config(struct otx2_nic *pfvf, int lvl, int prio, bool txschq_for
 		req->reg[1] = NIX_AF_TL2X_SCHEDULE(schq);
 		req->regval[1] = TXSCH_TL1_DFLT_RR_PRIO << 24 | dwrr_val;
 
-		if (lvl == hw->txschq_link_cfg_lvl) {
+		if (lvl == hw->txschq_link_cfg_lvl && !is_otx2_sdp_rep(pfvf->pdev)) {
 			req->num_regs++;
 			req->reg[2] = NIX_AF_TL3_TL2X_LINKX_CFG(schq, hw->tx_link);
 			/* Enable this queue and backpressure
@@ -736,6 +745,7 @@ EXPORT_SYMBOL(otx2_smq_flush);
 
 int otx2_txsch_alloc(struct otx2_nic *pfvf)
 {
+	int chan_cnt = pfvf->hw.tx_chan_cnt;
 	struct nix_txsch_alloc_req *req;
 	struct nix_txsch_alloc_rsp *rsp;
 	int lvl, schq, rc;
@@ -748,6 +758,12 @@ int otx2_txsch_alloc(struct otx2_nic *pfvf)
 	/* Request one schq per level */
 	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++)
 		req->schq[lvl] = 1;
+
+	if (is_otx2_sdp_rep(pfvf->pdev) && chan_cnt > 1) {
+		req->schq[NIX_TXSCH_LVL_SMQ] = chan_cnt;
+		req->schq[NIX_TXSCH_LVL_TL4] = chan_cnt;
+	}
+
 	rc = otx2_sync_mbox_msg(&pfvf->mbox);
 	if (rc)
 		return rc;
@@ -758,10 +774,12 @@ int otx2_txsch_alloc(struct otx2_nic *pfvf)
 		return PTR_ERR(rsp);
 
 	/* Setup transmit scheduler list */
-	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++)
+	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
+		pfvf->hw.txschq_cnt[lvl] = rsp->schq[lvl];
 		for (schq = 0; schq < rsp->schq[lvl]; schq++)
 			pfvf->hw.txschq_list[lvl][schq] =
 				rsp->schq_list[lvl][schq];
+	}
 
 	pfvf->hw.txschq_link_cfg_lvl = rsp->link_cfg_lvl;
 	pfvf->hw.txschq_aggr_lvl_rr_prio = rsp->aggr_lvl_rr_prio;
@@ -799,12 +817,15 @@ EXPORT_SYMBOL(otx2_txschq_free_one);
 
 void otx2_txschq_stop(struct otx2_nic *pfvf)
 {
-	int lvl, schq;
+	int lvl, schq, idx;
 
 	/* free non QOS TLx nodes */
-	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++)
-		otx2_txschq_free_one(pfvf, lvl,
-				     pfvf->hw.txschq_list[lvl][0]);
+	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
+		for (idx = 0; idx < pfvf->hw.txschq_cnt[lvl]; idx++) {
+			otx2_txschq_free_one(pfvf, lvl,
+					     pfvf->hw.txschq_list[lvl][idx]);
+		}
+	}
 
 	/* Clear the txschq list */
 	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
@@ -884,7 +905,7 @@ static int otx2_rq_init(struct otx2_nic *pfvf, u16 qidx, u16 lpb_aura)
 	return otx2_sync_mbox_msg(&pfvf->mbox);
 }
 
-int otx2_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura)
+int otx2_sq_aq_init(void *dev, u16 qidx, u8 chan_offset, u16 sqb_aura)
 {
 	struct otx2_nic *pfvf = dev;
 	struct otx2_snd_queue *sq;
@@ -903,7 +924,7 @@ int otx2_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura)
 	aq->sq.ena = 1;
 	aq->sq.smq = otx2_get_smq_idx(pfvf, qidx);
 	aq->sq.smq_rr_quantum = mtu_to_dwrr_weight(pfvf, pfvf->tx_max_pktlen);
-	aq->sq.default_chan = pfvf->hw.tx_chan_base;
+	aq->sq.default_chan = pfvf->hw.tx_chan_base + chan_offset;
 	aq->sq.sqe_stype = NIX_STYPE_STF; /* Cache SQB */
 	aq->sq.sqb_aura = sqb_aura;
 	aq->sq.sq_int_ena = NIX_SQINT_BITS;
@@ -926,6 +947,7 @@ int otx2_sq_init(struct otx2_nic *pfvf, u16 qidx, u16 sqb_aura)
 	struct otx2_qset *qset = &pfvf->qset;
 	struct otx2_snd_queue *sq;
 	struct otx2_pool *pool;
+	u8 chan_offset;
 	int err;
 
 	pool = &pfvf->qset.pool[sqb_aura];
@@ -972,7 +994,8 @@ int otx2_sq_init(struct otx2_nic *pfvf, u16 qidx, u16 sqb_aura)
 	sq->stats.bytes = 0;
 	sq->stats.pkts = 0;
 
-	err = pfvf->hw_ops->sq_aq_init(pfvf, qidx, sqb_aura);
+	chan_offset = qidx % pfvf->hw.tx_chan_cnt;
+	err = pfvf->hw_ops->sq_aq_init(pfvf, qidx, chan_offset, sqb_aura);
 	if (err) {
 		kfree(sq->sg);
 		sq->sg = NULL;
@@ -1739,6 +1762,8 @@ void mbox_handler_nix_lf_alloc(struct otx2_nic *pfvf,
 	pfvf->hw.sqb_size = rsp->sqb_size;
 	pfvf->hw.rx_chan_base = rsp->rx_chan_base;
 	pfvf->hw.tx_chan_base = rsp->tx_chan_base;
+	pfvf->hw.rx_chan_cnt = rsp->rx_chan_cnt;
+	pfvf->hw.tx_chan_cnt = rsp->tx_chan_cnt;
 	pfvf->hw.lso_tsov4_idx = rsp->lso_tsov4_idx;
 	pfvf->hw.lso_tsov6_idx = rsp->lso_tsov6_idx;
 	pfvf->hw.cgx_links = rsp->cgx_links;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
index 865d5d3146a9..1d6939786495 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
@@ -42,6 +42,8 @@
 #define PCI_SUBSYS_DEVID_96XX_RVU_PFVF		0xB200
 #define PCI_SUBSYS_DEVID_CN10K_B_RVU_PFVF	0xBD00
 
+#define PCI_DEVID_OCTEONTX2_SDP_REP		0xA0F7
+
 /* PCI BAR nos */
 #define PCI_CFG_REG_BAR_NUM                     2
 #define PCI_MBOX_BAR_NUM                        4
@@ -198,6 +200,7 @@ struct otx2_hw {
 
 	/* NIX */
 	u8			txschq_link_cfg_lvl;
+	u8			txschq_cnt[NIX_TXSCH_LVL_CNT];
 	u8			txschq_aggr_lvl_rr_prio;
 	u16			txschq_list[NIX_TXSCH_LVL_CNT][MAX_TXSCHQ_PER_FUNC];
 	u16			matchall_ipolicer;
@@ -208,6 +211,8 @@ struct otx2_hw {
 	/* HW settings, coalescing etc */
 	u16			rx_chan_base;
 	u16			tx_chan_base;
+	u8			rx_chan_cnt;
+	u8			tx_chan_cnt;
 	u16			cq_qcount_wait;
 	u16			cq_ecount_wait;
 	u16			rq_skid;
@@ -343,7 +348,7 @@ struct otx2_flow_config {
 };
 
 struct dev_hw_ops {
-	int	(*sq_aq_init)(void *dev, u16 qidx, u16 sqb_aura);
+	int	(*sq_aq_init)(void *dev, u16 qidx, u8 chan_offset, u16 sqb_aura);
 	void	(*sqe_flush)(void *dev, struct otx2_snd_queue *sq,
 			     int size, int qidx);
 	int	(*refill_pool_ptrs)(void *dev, struct otx2_cq_queue *cq);
@@ -536,6 +541,11 @@ static inline bool is_96xx_B0(struct pci_dev *pdev)
 		(pdev->subsystem_device == PCI_SUBSYS_DEVID_96XX_RVU_PFVF);
 }
 
+static inline bool is_otx2_sdp_rep(struct pci_dev *pdev)
+{
+	return pdev->device == PCI_DEVID_OCTEONTX2_SDP_REP;
+}
+
 /* REVID for PCIe devices.
  * Bits 0..1: minor pass, bit 3..2: major pass
  * bits 7..4: midr id
@@ -898,15 +908,19 @@ static inline void otx2_dma_unmap_page(struct otx2_nic *pfvf,
 static inline u16 otx2_get_smq_idx(struct otx2_nic *pfvf, u16 qidx)
 {
 	u16 smq;
+	int idx;
+
 #ifdef CONFIG_DCB
 	if (qidx < NIX_PF_PFC_PRIO_MAX && pfvf->pfc_alloc_status[qidx])
 		return pfvf->pfc_schq_list[NIX_TXSCH_LVL_SMQ][qidx];
 #endif
 	/* check if qidx falls under QOS queues */
-	if (qidx >= pfvf->hw.non_qos_queues)
+	if (qidx >= pfvf->hw.non_qos_queues) {
 		smq = pfvf->qos.qid_to_sqmap[qidx - pfvf->hw.non_qos_queues];
-	else
-		smq = pfvf->hw.txschq_list[NIX_TXSCH_LVL_SMQ][0];
+	} else {
+		idx = qidx % pfvf->hw.txschq_cnt[NIX_TXSCH_LVL_SMQ];
+		smq = pfvf->hw.txschq_list[NIX_TXSCH_LVL_SMQ][idx];
+	}
 
 	return smq;
 }
@@ -973,8 +987,8 @@ int otx2_nix_config_bp(struct otx2_nic *pfvf, bool enable);
 void otx2_cleanup_rx_cqes(struct otx2_nic *pfvf, struct otx2_cq_queue *cq, int qidx);
 void otx2_cleanup_tx_cqes(struct otx2_nic *pfvf, struct otx2_cq_queue *cq);
 int otx2_sq_init(struct otx2_nic *pfvf, u16 qidx, u16 sqb_aura);
-int otx2_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura);
-int cn10k_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura);
+int otx2_sq_aq_init(void *dev, u16 qidx, u8 chan_offset, u16 sqb_aura);
+int cn10k_sq_aq_init(void *dev, u16 qidx, u8 chan_offset, u16 sqb_aura);
 int otx2_alloc_buffer(struct otx2_nic *pfvf, struct otx2_cq_queue *cq,
 		      dma_addr_t *dma);
 int otx2_pool_init(struct otx2_nic *pfvf, u16 pool_id,
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 8fc26a95a871..b46ea92a1ba5 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -1593,10 +1593,15 @@ int otx2_init_hw_resources(struct otx2_nic *pf)
 	}
 
 	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
-		err = otx2_txschq_config(pf, lvl, 0, false);
-		if (err) {
-			mutex_unlock(&mbox->lock);
-			goto err_free_nix_queues;
+		int idx;
+
+		for (idx = 0; idx < pf->hw.txschq_cnt[lvl]; idx++) {
+			err = otx2_txschq_config(pf, lvl, idx, false);
+			if (err) {
+				dev_err(pf->dev, "Failed to config TXSCH\n");
+				mutex_unlock(&mbox->lock);
+				goto err_free_nix_queues;
+			}
 		}
 	}
 
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_reg.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_reg.h
index 45a32e4b49d1..defcb9ea21e1 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_reg.h
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_reg.h
@@ -140,6 +140,7 @@
 
 /* NIX AF transmit scheduler registers */
 #define NIX_AF_SMQX_CFG(a)		(0x700 | (a) << 16)
+#define NIX_AF_TL4X_SDP_LINK_CFG(a)	(0xB10 | (a) << 16)
 #define NIX_AF_TL1X_SCHEDULE(a)		(0xC00 | (a) << 16)
 #define NIX_AF_TL1X_CIR(a)		(0xC20 | (a) << 16)
 #define NIX_AF_TL1X_TOPOLOGY(a)		(0xC80 | (a) << 16)
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
index 048f9a744542..fd093c4c3289 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
@@ -21,6 +21,7 @@
 static const struct pci_device_id otx2_vf_id_table[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_RVU_AFVF) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_RVU_VF) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_SDP_REP) },
 	{ }
 };
 
@@ -371,7 +372,7 @@ static int otx2vf_open(struct net_device *netdev)
 
 	/* LBKs do not receive link events so tell everyone we are up here */
 	vf = netdev_priv(netdev);
-	if (is_otx2_lbkvf(vf->pdev)) {
+	if (is_otx2_lbkvf(vf->pdev) || is_otx2_sdp_rep(vf->pdev)) {
 		pr_info("%s NIC Link is UP\n", netdev->name);
 		netif_carrier_on(netdev);
 		netif_tx_start_all_queues(netdev);
@@ -683,6 +684,14 @@ static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		snprintf(netdev->name, sizeof(netdev->name), "lbk%d", n);
 	}
 
+	if (is_otx2_sdp_rep(vf->pdev)) {
+		int n;
+
+		n = (vf->pcifunc >> RVU_PFVF_FUNC_SHIFT) & RVU_PFVF_FUNC_MASK;
+		n -= 1;
+		snprintf(netdev->name, sizeof(netdev->name), "sdp%d-%d", pdev->bus->number, n);
+	}
+
 	err = register_netdev(netdev);
 	if (err) {
 		dev_err(dev, "Failed to register netdevice\n");
-- 
2.25.1

Re: [net-next PATCH 2/9] octeontx2-pf: RVU representor driver

[Kalesh Anakkur Purayil]

[-- Attachment #1: Type: text/plain, Size: 25583 bytes --]

On Tue, Apr 16, 2024 at 10:37 AM Geetha sowjanya <gakula@marvell.com> wrote:
>
> This patch adds basic driver for the RVU representor.
> Driver on probe does pci specific initialization and does hw
> resources configuration.
> Introduces RVU_ESWITCH kernel config to enable/disable
> this driver. Representor and NIC shares the code but represenotrs
> netdev support subset of NIC functionality. Hence "is_rep_dev"
> api helps to skip the features initialization that are not supported
> by the representors.
>
> Signed-off-by: Geetha sowjanya <gakula@marvell.com>
> ---
>  .../net/ethernet/marvell/octeontx2/Kconfig    |   8 +
>  .../ethernet/marvell/octeontx2/af/Makefile    |   3 +-
>  .../net/ethernet/marvell/octeontx2/af/mbox.h  |   8 +
>  .../net/ethernet/marvell/octeontx2/af/rvu.h   |  11 +
>  .../ethernet/marvell/octeontx2/af/rvu_nix.c   |  19 +-
>  .../ethernet/marvell/octeontx2/af/rvu_rep.c   |  48 ++++
>  .../ethernet/marvell/octeontx2/nic/Makefile   |   2 +
>  .../marvell/octeontx2/nic/otx2_common.h       |  12 +-
>  .../ethernet/marvell/octeontx2/nic/otx2_pf.c  |  17 +-
>  .../marvell/octeontx2/nic/otx2_txrx.c         |  19 +-
>  .../net/ethernet/marvell/octeontx2/nic/rep.c  | 221 ++++++++++++++++++
>  .../net/ethernet/marvell/octeontx2/nic/rep.h  |  32 +++
>  12 files changed, 383 insertions(+), 17 deletions(-)
>  create mode 100644 drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
>  create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.c
>  create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.h
>
> diff --git a/drivers/net/ethernet/marvell/octeontx2/Kconfig b/drivers/net/ethernet/marvell/octeontx2/Kconfig
> index a32d85d6f599..72f57d6f8a87 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/Kconfig
> +++ b/drivers/net/ethernet/marvell/octeontx2/Kconfig
> @@ -46,3 +46,11 @@ config OCTEONTX2_VF
>         depends on OCTEONTX2_PF
>         help
>           This driver supports Marvell's OcteonTX2 NIC virtual function.
> +
> +config RVU_ESWITCH
> +       tristate "Marvell RVU E-Switch support"
> +       depends on OCTEONTX2_PF && NET_SWITCHDEV
> +       default m
> +       help
> +         This driver supports Marvell's RVU E-Switch that
> +         provides internal SRIOV packet steering and switching for the
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/Makefile b/drivers/net/ethernet/marvell/octeontx2/af/Makefile
> index 3cf4c8285c90..ccea37847df8 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/Makefile
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/Makefile
> @@ -11,4 +11,5 @@ rvu_mbox-y := mbox.o rvu_trace.o
>  rvu_af-y := cgx.o rvu.o rvu_cgx.o rvu_npa.o rvu_nix.o \
>                   rvu_reg.o rvu_npc.o rvu_debugfs.o ptp.o rvu_npc_fs.o \
>                   rvu_cpt.o rvu_devlink.o rpm.o rvu_cn10k.o rvu_switch.o \
> -                 rvu_sdp.o rvu_npc_hash.o mcs.o mcs_rvu_if.o mcs_cnf10kb.o
> +                 rvu_sdp.o rvu_npc_hash.o mcs.o mcs_rvu_if.o mcs_cnf10kb.o \
> +                 rvu_rep.o
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> index 10efbd56abd1..c77c02730cf9 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> @@ -143,6 +143,7 @@ M(LMTST_TBL_SETUP,  0x00a, lmtst_tbl_setup, lmtst_tbl_setup_req,    \
>                                 msg_rsp)                                \
>  M(SET_VF_PERM,         0x00b, set_vf_perm, set_vf_perm, msg_rsp)       \
>  M(PTP_GET_CAP,         0x00c, ptp_get_cap, msg_req, ptp_get_cap_rsp)   \
> +M(GET_REP_CNT,         0x00d, get_rep_cnt, msg_req, get_rep_cnt_rsp)   \
>  /* CGX mbox IDs (range 0x200 - 0x3FF) */                               \
>  M(CGX_START_RXTX,      0x200, cgx_start_rxtx, msg_req, msg_rsp)        \
>  M(CGX_STOP_RXTX,       0x201, cgx_stop_rxtx, msg_req, msg_rsp)         \
> @@ -1524,6 +1525,13 @@ struct ptp_get_cap_rsp {
>         u64 cap;
>  };
>
> +struct get_rep_cnt_rsp {
> +       struct mbox_msghdr hdr;
> +       u16 rep_cnt;
> +       u16 rep_pf_map[64];
> +       u64 rsvd;
> +};
> +
>  struct flow_msg {
>         unsigned char dmac[6];
>         unsigned char smac[6];
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> index e7ff2f1b021f..1d76d52d7a5d 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> @@ -593,6 +593,9 @@ struct rvu {
>         spinlock_t              cpt_intr_lock;
>
>         struct mutex            mbox_lock; /* Serialize mbox up and down msgs */
> +       u16                     rep_pcifunc;
> +       int                     rep_cnt;
> +       u16                     *rep2pfvf_map;
>  };
>
>  static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val)
> @@ -821,6 +824,14 @@ bool is_sdp_pfvf(u16 pcifunc);
>  bool is_sdp_pf(u16 pcifunc);
>  bool is_sdp_vf(struct rvu *rvu, u16 pcifunc);
>
> +static inline bool is_rep_dev(struct rvu *rvu, u16 pcifunc)
> +{
> +       if (rvu->rep_pcifunc && rvu->rep_pcifunc == pcifunc)
> +               return true;
> +
> +       return false;
> +}
> +
>  /* CGX APIs */
>  static inline bool is_pf_cgxmapped(struct rvu *rvu, u8 pf)
>  {
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> index cb795d09971e..4ef5bb7b337f 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> @@ -329,7 +329,8 @@ static bool is_valid_txschq(struct rvu *rvu, int blkaddr,
>
>         /* TLs aggegating traffic are shared across PF and VFs */
>         if (lvl >= hw->cap.nix_tx_aggr_lvl) {
> -               if (rvu_get_pf(map_func) != rvu_get_pf(pcifunc))
> +               if ((nix_get_tx_link(rvu, map_func) != nix_get_tx_link(rvu, pcifunc)) &&
> +                   (rvu_get_pf(map_func) != rvu_get_pf(pcifunc)))
>                         return false;
>                 else
>                         return true;
> @@ -1631,6 +1632,12 @@ int rvu_mbox_handler_nix_lf_alloc(struct rvu *rvu,
>         cfg = NPC_TX_DEF_PKIND;
>         rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_PARSE_CFG(nixlf), cfg);
>
> +       if (is_rep_dev(rvu, pcifunc)) {
> +               pfvf->tx_chan_base = RVU_SWITCH_LBK_CHAN;
> +               pfvf->tx_chan_cnt = 1;
> +               goto exit;
> +       }
> +
>         intf = is_lbk_vf(rvu, pcifunc) ? NIX_INTF_TYPE_LBK : NIX_INTF_TYPE_CGX;
>         if (is_sdp_pfvf(pcifunc))
>                 intf = NIX_INTF_TYPE_SDP;
> @@ -1701,6 +1708,9 @@ int rvu_mbox_handler_nix_lf_free(struct rvu *rvu, struct nix_lf_free_req *req,
>         if (nixlf < 0)
>                 return NIX_AF_ERR_AF_LF_INVALID;
>
> +       if (is_rep_dev(rvu, pcifunc))
> +               goto free_lf;
> +
>         if (req->flags & NIX_LF_DISABLE_FLOWS)
>                 rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
>         else
> @@ -1712,6 +1722,7 @@ int rvu_mbox_handler_nix_lf_free(struct rvu *rvu, struct nix_lf_free_req *req,
>
>         nix_interface_deinit(rvu, pcifunc, nixlf);
>
> +free_lf:
>         /* Reset this NIX LF */
>         err = rvu_lf_reset(rvu, block, nixlf);
>         if (err) {
> @@ -2007,7 +2018,7 @@ static void nix_get_txschq_range(struct rvu *rvu, u16 pcifunc,
>         struct rvu_hwinfo *hw = rvu->hw;
>         int pf = rvu_get_pf(pcifunc);
>
> -       if (is_lbk_vf(rvu, pcifunc)) { /* LBK links */
> +       if (is_lbk_vf(rvu, pcifunc) || is_rep_dev(rvu, pcifunc)) { /* LBK links */
>                 *start = hw->cap.nix_txsch_per_cgx_lmac * link;
>                 *end = *start + hw->cap.nix_txsch_per_lbk_lmac;
>         } else if (is_pf_cgxmapped(rvu, pf)) { /* CGX links */
> @@ -4519,7 +4530,7 @@ int rvu_mbox_handler_nix_set_hw_frs(struct rvu *rvu, struct nix_frs_cfg *req,
>         if (!nix_hw)
>                 return NIX_AF_ERR_INVALID_NIXBLK;
>
> -       if (is_lbk_vf(rvu, pcifunc))
> +       if (is_lbk_vf(rvu, pcifunc) || is_rep_dev(rvu, pcifunc))
>                 rvu_get_lbk_link_max_frs(rvu, &max_mtu);
>         else
>                 rvu_get_lmac_link_max_frs(rvu, &max_mtu);
> @@ -4547,6 +4558,8 @@ int rvu_mbox_handler_nix_set_hw_frs(struct rvu *rvu, struct nix_frs_cfg *req,
>                 /* For VFs of PF0 ingress is LBK port, so config LBK link */
>                 pfvf = rvu_get_pfvf(rvu, pcifunc);
>                 link = hw->cgx_links + pfvf->lbkid;
> +       } else if (is_rep_dev(rvu, pcifunc)) {
> +               link = hw->cgx_links + 0;
>         }
>
>         if (link < 0)
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> new file mode 100644
> index 000000000000..d07cb356d3d6
> --- /dev/null
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> @@ -0,0 +1,48 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Marvell RVU Admin Function driver
> + *
> + * Copyright (C) 2024 Marvell.
> + *
> + */
> +
> +#include <linux/types.h>
> +#include <linux/device.h>
> +#include <linux/module.h>
> +#include <linux/pci.h>
> +
> +#include "rvu.h"
> +#include "rvu_reg.h"
> +
> +int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu, struct msg_req *req,
> +                                struct get_rep_cnt_rsp *rsp)
> +{
> +       int pf, vf, numvfs, hwvf, rep = 0;
> +       u16 pcifunc;
> +
> +       rvu->rep_pcifunc = req->hdr.pcifunc;
> +       rsp->rep_cnt = rvu->cgx_mapped_pfs + rvu->cgx_mapped_vfs;
> +       rvu->rep_cnt = rsp->rep_cnt;
> +
> +       rvu->rep2pfvf_map = devm_kzalloc(rvu->dev, rvu->rep_cnt *
> +                                        sizeof(u16), GFP_KERNEL);
[Kalesh] Any reason to use "devm_kzalloc" here? Why not kzalloc()
> +       if (!rvu->rep2pfvf_map)
> +               return -ENOMEM;
> +
> +       for (pf = 0; pf < rvu->hw->total_pfs; pf++) {
> +               if (!is_pf_cgxmapped(rvu, pf))
> +                       continue;
> +               pcifunc = pf << RVU_PFVF_PF_SHIFT;
> +               rvu->rep2pfvf_map[rep] = pcifunc;
> +               rsp->rep_pf_map[rep] = pcifunc;
> +               rep++;
> +               rvu_get_pf_numvfs(rvu, pf, &numvfs, &hwvf);
> +               for (vf = 0; vf < numvfs; vf++) {
> +                       rvu->rep2pfvf_map[rep] = pcifunc |
> +                               ((vf + 1) & RVU_PFVF_FUNC_MASK);
> +                       rsp->rep_pf_map[rep] = rvu->rep2pfvf_map[rep];
> +                       rep++;
> +               }
> +       }
> +       return 0;
> +}
> +
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/Makefile b/drivers/net/ethernet/marvell/octeontx2/nic/Makefile
> index 5664f768cb0c..69ee78dc8aad 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/Makefile
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/Makefile
> @@ -5,11 +5,13 @@
>
>  obj-$(CONFIG_OCTEONTX2_PF) += rvu_nicpf.o otx2_ptp.o
>  obj-$(CONFIG_OCTEONTX2_VF) += rvu_nicvf.o otx2_ptp.o
> +obj-$(CONFIG_RVU_ESWITCH) += rvu_rep.o
>
>  rvu_nicpf-y := otx2_pf.o otx2_common.o otx2_txrx.o otx2_ethtool.o \
>                 otx2_flows.o otx2_tc.o cn10k.o otx2_dmac_flt.o \
>                 otx2_devlink.o qos_sq.o qos.o
>  rvu_nicvf-y := otx2_vf.o otx2_devlink.o
> +rvu_rep-y := rep.o
>
>  rvu_nicpf-$(CONFIG_DCB) += otx2_dcbnl.o
>  rvu_nicvf-$(CONFIG_DCB) += otx2_dcbnl.o
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
> index e6d7b2487ed1..79ec86035c16 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
> @@ -29,6 +29,7 @@
>  #include "otx2_devlink.h"
>  #include <rvu_trace.h>
>  #include "qos.h"
> +#include "rep.h"
>
>  /* IPv4 flag more fragment bit */
>  #define IPV4_FLAG_MORE                         0x20
> @@ -439,6 +440,7 @@ struct otx2_nic {
>  #define OTX2_FLAG_DMACFLTR_SUPPORT             BIT_ULL(14)
>  #define OTX2_FLAG_PTP_ONESTEP_SYNC             BIT_ULL(15)
>  #define OTX2_FLAG_ADPTV_INT_COAL_ENABLED BIT_ULL(16)
> +#define OTX2_FLAG_REP_MODE_ENABLED              BIT_ULL(17)
>         u64                     flags;
>         u64                     *cq_op_addr;
>
> @@ -506,11 +508,19 @@ struct otx2_nic {
>  #if IS_ENABLED(CONFIG_MACSEC)
>         struct cn10k_mcs_cfg    *macsec_cfg;
>  #endif
> +
> +#if IS_ENABLED(CONFIG_RVU_ESWITCH)
> +       struct rep_dev          **reps;
> +       int                     rep_cnt;
> +       u16                     rep_pf_map[RVU_MAX_REP];
> +       u16                     esw_mode;
> +#endif
>  };
>
>  static inline bool is_otx2_lbkvf(struct pci_dev *pdev)
>  {
> -       return pdev->device == PCI_DEVID_OCTEONTX2_RVU_AFVF;
> +       return (pdev->device == PCI_DEVID_OCTEONTX2_RVU_AFVF) ||
> +               (pdev->device == PCI_DEVID_RVU_REP);
>  }
>
>  static inline bool is_96xx_A0(struct pci_dev *pdev)
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
> index 88886ea864cc..119c99768a85 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
> @@ -1502,10 +1502,11 @@ int otx2_init_hw_resources(struct otx2_nic *pf)
>         hw->sqpool_cnt = otx2_get_total_tx_queues(pf);
>         hw->pool_cnt = hw->rqpool_cnt + hw->sqpool_cnt;
>
> -       /* Maximum hardware supported transmit length */
> -       pf->tx_max_pktlen = pf->netdev->max_mtu + OTX2_ETH_HLEN;
> -
> -       pf->rbsize = otx2_get_rbuf_size(pf, pf->netdev->mtu);
> +       if (!is_rep_dev(pf->pdev)) {
> +               /* Maximum hardware supported transmit length */
> +               pf->tx_max_pktlen = pf->netdev->max_mtu + OTX2_ETH_HLEN;
> +               pf->rbsize = otx2_get_rbuf_size(pf, pf->netdev->mtu);
> +       }
>
>         mutex_lock(&mbox->lock);
>         /* NPA init */
> @@ -1634,11 +1635,12 @@ void otx2_free_hw_resources(struct otx2_nic *pf)
>                 otx2_pfc_txschq_stop(pf);
>  #endif
>
> -       otx2_clean_qos_queues(pf);
> +       if (!is_rep_dev(pf->pdev))
> +               otx2_clean_qos_queues(pf);
>
>         mutex_lock(&mbox->lock);
>         /* Disable backpressure */
> -       if (!(pf->pcifunc & RVU_PFVF_FUNC_MASK))
> +       if (!is_otx2_lbkvf(pf->pdev))
>                 otx2_nix_config_bp(pf, false);
>         mutex_unlock(&mbox->lock);
>
> @@ -1670,7 +1672,8 @@ void otx2_free_hw_resources(struct otx2_nic *pf)
>         otx2_free_cq_res(pf);
>
>         /* Free all ingress bandwidth profiles allocated */
> -       cn10k_free_all_ipolicers(pf);
> +       if (!is_rep_dev(pf->pdev))
> +               cn10k_free_all_ipolicers(pf);
>
>         mutex_lock(&mbox->lock);
>         /* Reset NIX LF */
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
> index 8223780fc269..2a2cfa77bd4d 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c
> @@ -375,11 +375,13 @@ static void otx2_rcv_pkt_handler(struct otx2_nic *pfvf,
>                 }
>                 start += sizeof(*sg);
>         }
> -       otx2_set_rxhash(pfvf, cqe, skb);
>
> -       skb_record_rx_queue(skb, cq->cq_idx);
> -       if (pfvf->netdev->features & NETIF_F_RXCSUM)
> -               skb->ip_summed = CHECKSUM_UNNECESSARY;
> +       if (!(pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)) {
> +               otx2_set_rxhash(pfvf, cqe, skb);
> +               skb_record_rx_queue(skb, cq->cq_idx);
> +               if (pfvf->netdev->features & NETIF_F_RXCSUM)
> +                       skb->ip_summed = CHECKSUM_UNNECESSARY;
> +       }
>
>         skb_mark_for_recycle(skb);
>
> @@ -463,7 +465,11 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
>  process_cqe:
>         qidx = cq->cq_idx - pfvf->hw.rx_queues;
>         sq = &pfvf->qset.sq[qidx];
> -       ndev = pfvf->netdev;
> +
> +       if (pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)
> +               ndev = pfvf->reps[qidx]->netdev;
> +       else
> +               ndev = pfvf->netdev;
>
>         while (likely(processed_cqe < budget) && cq->pend_cqe) {
>                 cqe = (struct nix_cqe_tx_s *)otx2_get_next_cqe(cq);
> @@ -500,6 +506,9 @@ static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
>
>                 if (qidx >= pfvf->hw.tx_queues)
>                         qidx -= pfvf->hw.xdp_queues;
> +
> +               if (pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)
> +                       qidx = 0;
>                 txq = netdev_get_tx_queue(pfvf->netdev, qidx);
>                 netdev_tx_completed_queue(txq, tx_pkts, tx_bytes);
>                 /* Check if queue was stopped earlier due to ring full */
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> new file mode 100644
> index 000000000000..b892a7fe3ddc
> --- /dev/null
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> @@ -0,0 +1,221 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Marvell RVU representor driver
> + *
> + * Copyright (C) 2024 Marvell.
> + *
> + */
> +
> +#include <linux/etherdevice.h>
> +#include <linux/module.h>
> +#include <linux/pci.h>
> +#include <linux/net_tstamp.h>
> +
> +#include "otx2_common.h"
> +#include "cn10k.h"
> +#include "otx2_reg.h"
> +#include "rep.h"
> +
> +#define DRV_NAME       "rvu_rep"
> +#define DRV_STRING     "Marvell RVU Representor Driver"
> +
> +static const struct pci_device_id rvu_rep_id_table[] = {
> +       { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_RVU_REP) },
> +       { }
> +};
> +
> +MODULE_AUTHOR("Marvell International Ltd.");
> +MODULE_DESCRIPTION(DRV_STRING);
> +MODULE_LICENSE("GPL");
> +MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
> +
> +static int rvu_rep_rsrc_free(struct otx2_nic *priv)
[Kalesh] You can change this to a void function
> +{
> +       struct otx2_qset *qset = &priv->qset;
> +       int wrk;
> +
> +       for (wrk = 0; wrk < priv->qset.cq_cnt; wrk++)
> +               cancel_delayed_work_sync(&priv->refill_wrk[wrk].pool_refill_work);
> +       devm_kfree(priv->dev, priv->refill_wrk);
> +
> +       otx2_free_hw_resources(priv);
> +       otx2_free_queue_mem(qset);
> +       return 0;
> +}
> +
> +static int rvu_rep_rsrc_init(struct otx2_nic *priv)
> +{
> +       struct otx2_qset *qset = &priv->qset;
> +       int err = 0;
[Kalesh] No need to initialize "rc" here
> +
> +       err = otx2_alloc_queue_mem(priv);
> +       if (err)
> +               return err;
> +
> +       priv->hw.max_mtu = otx2_get_max_mtu(priv);
> +       priv->tx_max_pktlen = priv->hw.max_mtu + OTX2_ETH_HLEN;
> +       priv->rbsize = ALIGN(priv->hw.rbuf_len, OTX2_ALIGN) + OTX2_HEAD_ROOM;
> +
> +       err = otx2_init_hw_resources(priv);
> +       if (err)
> +               goto err_free_rsrc;
> +
> +       /* Set maximum frame size allowed in HW */
> +       err = otx2_hw_set_mtu(priv, priv->hw.max_mtu);
> +       if (err) {
> +               dev_err(priv->dev, "Failed to set HW MTU\n");
> +               goto err_free_rsrc;
> +       }
> +       return 0;
> +
> +err_free_rsrc:
> +       otx2_free_hw_resources(priv);
> +       otx2_free_queue_mem(qset);
> +       return err;
> +}
> +
> +static int rvu_get_rep_cnt(struct otx2_nic *priv)
> +{
> +       struct get_rep_cnt_rsp *rsp;
> +       struct mbox_msghdr *msghdr;
> +       struct msg_req *req;
> +       int err, rep;
> +
> +       mutex_lock(&priv->mbox.lock);
> +       req = otx2_mbox_alloc_msg_get_rep_cnt(&priv->mbox);
> +       if (!req) {
> +               mutex_unlock(&priv->mbox.lock);
> +               return -ENOMEM;
> +       }
> +       err = otx2_sync_mbox_msg(&priv->mbox);
> +       if (err)
> +               goto exit;
> +
> +       msghdr = otx2_mbox_get_rsp(&priv->mbox.mbox, 0, &req->hdr);
> +       if (IS_ERR(msghdr)) {
> +               err = PTR_ERR(rsp);
[Kalesh] "rsp" is not initialized here. Did you mean "err = PTR_ERR(msghdr);"?
> +               goto exit;
> +       }
> +
> +       rsp = (struct get_rep_cnt_rsp *)msghdr;
> +       priv->hw.tx_queues = rsp->rep_cnt;
> +       priv->hw.rx_queues = rsp->rep_cnt;
> +       priv->rep_cnt = rsp->rep_cnt;
> +       for (rep = 0; rep < priv->rep_cnt; rep++)
> +               priv->rep_pf_map[rep] = rsp->rep_pf_map[rep];
> +
> +exit:
> +       mutex_unlock(&priv->mbox.lock);
> +       return err;
> +}
> +
> +static int rvu_rep_probe(struct pci_dev *pdev, const struct pci_device_id *id)
> +{
> +       struct device *dev = &pdev->dev;
> +       struct otx2_nic *priv;
> +       struct otx2_hw *hw;
> +       int err;
> +
> +       err = pcim_enable_device(pdev);
> +       if (err) {
> +               dev_err(dev, "Failed to enable PCI device\n");
> +               return err;
> +       }
> +
> +       err = pci_request_regions(pdev, DRV_NAME);
> +       if (err) {
> +               dev_err(dev, "PCI request regions failed 0x%x\n", err);
> +               return err;
> +       }
> +
> +       err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
> +       if (err) {
> +               dev_err(dev, "DMA mask config failed, abort\n");
> +               goto err_release_regions;
> +       }
> +
> +       pci_set_master(pdev);
> +
> +       priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> +       if (!priv)
> +               return -ENOMEM;
[Kalesh: goto err_release_regions; ??
> +       pci_set_drvdata(pdev, priv);
> +       priv->pdev = pdev;
> +       priv->dev = dev;
> +       priv->flags |= OTX2_FLAG_INTF_DOWN;
> +       priv->flags |= OTX2_FLAG_REP_MODE_ENABLED;
> +
> +       hw = &priv->hw;
> +       hw->pdev = pdev;
> +       hw->max_queues = OTX2_MAX_CQ_CNT;
> +       hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN;
> +       hw->xqe_size = 128;
> +
> +       err = otx2_init_rsrc(pdev, priv);
> +       if (err)
> +               goto err_release_regions;
> +
> +       err = rvu_get_rep_cnt(priv);
> +       if (err)
> +               goto err_detach_rsrc;
> +
> +       err = rvu_rep_rsrc_init(priv);
> +       if (err)
> +               goto err_detach_rsrc;
> +
> +       return 0;
> +
> +err_detach_rsrc:
> +       if (priv->hw.lmt_info)
> +               free_percpu(priv->hw.lmt_info);
> +       if (test_bit(CN10K_LMTST, &priv->hw.cap_flag))
> +               qmem_free(priv->dev, priv->dync_lmt);
> +       otx2_detach_resources(&priv->mbox);
> +       otx2_disable_mbox_intr(priv);
> +       otx2_pfaf_mbox_destroy(priv);
> +       pci_free_irq_vectors(pdev);
> +err_release_regions:
> +       pci_set_drvdata(pdev, NULL);
> +       pci_release_regions(pdev);
> +       return err;
> +}
> +
> +static void rvu_rep_remove(struct pci_dev *pdev)
> +{
> +       struct otx2_nic *priv = pci_get_drvdata(pdev);
> +
> +       rvu_rep_rsrc_free(priv);
> +       otx2_detach_resources(&priv->mbox);
> +       if (priv->hw.lmt_info)
> +               free_percpu(priv->hw.lmt_info);
> +       if (test_bit(CN10K_LMTST, &priv->hw.cap_flag))
> +               qmem_free(priv->dev, priv->dync_lmt);
> +       otx2_disable_mbox_intr(priv);
> +       otx2_pfaf_mbox_destroy(priv);
> +       pci_free_irq_vectors(priv->pdev);
> +       pci_set_drvdata(pdev, NULL);
> +       pci_release_regions(pdev);
> +}
> +
> +static struct pci_driver rvu_rep_driver = {
> +       .name = DRV_NAME,
> +       .id_table = rvu_rep_id_table,
> +       .probe = rvu_rep_probe,
> +       .remove = rvu_rep_remove,
> +       .shutdown = rvu_rep_remove,
> +};
> +
> +static int __init rvu_rep_init_module(void)
> +{
> +       pr_info("%s: %s\n", DRV_NAME, DRV_STRING);
> +
> +       return pci_register_driver(&rvu_rep_driver);
> +}
> +
> +static void __exit rvu_rep_cleanup_module(void)
> +{
> +       pci_unregister_driver(&rvu_rep_driver);
> +}
> +
> +module_init(rvu_rep_init_module);
> +module_exit(rvu_rep_cleanup_module);
> +
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
> new file mode 100644
> index 000000000000..30cce17eb48b
> --- /dev/null
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
> @@ -0,0 +1,32 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* Marvell RVU REPRESENTOR driver
> + *
> + * Copyright (C) 2024 Marvell.
> + *
> + */
> +
> +#ifndef REP_H
> +#define REP_H
> +
> +#include <linux/pci.h>
> +
> +#include "otx2_reg.h"
> +#include "otx2_txrx.h"
> +#include "otx2_common.h"
> +
> +#define PCI_DEVID_RVU_REP      0xA0E0
> +
> +#define RVU_MAX_REP    OTX2_MAX_CQ_CNT
> +struct rep_dev {
> +       struct otx2_nic *mdev;
> +       struct net_device *netdev;
> +       u16 rep_id;
> +       u16 pcifunc;
> +};
> +
> +static inline bool is_rep_dev(struct pci_dev *pdev)
> +{
> +       return pdev->device == PCI_DEVID_RVU_REP;
> +}
> +
> +#endif /* REP_H */
> --
> 2.25.1
>


-- 
Regards,
Kalesh A P

[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4239 bytes --]

Re: [net-next PATCH 3/9] octeontx2-pf: Create representor netdev

[kernel test robot]

Hi Geetha,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Geetha-sowjanya/octeontx2-pf-Refactoring-RVU-driver/20240416-131052
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240416050616.6056-4-gakula%40marvell.com
patch subject: [net-next PATCH 3/9] octeontx2-pf: Create representor netdev
config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20240417/202404170853.i93jboPB-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240417/202404170853.i93jboPB-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404170853.i93jboPB-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/net/ethernet/marvell/octeontx2/nic/rep.c: In function 'rvu_rep_create':
>> drivers/net/ethernet/marvell/octeontx2/nic/rep.c:163:66: warning: '%d' directive output may be truncated writing between 1 and 4 bytes into a region of size between 1 and 11 [-Wformat-truncation=]
     163 |                 snprintf(ndev->name, sizeof(ndev->name), "r%dp%dv%d", rep_id,
         |                                                                  ^~
   drivers/net/ethernet/marvell/octeontx2/nic/rep.c:163:58: note: directive argument in the range [0, 1023]
     163 |                 snprintf(ndev->name, sizeof(ndev->name), "r%dp%dv%d", rep_id,
         |                                                          ^~~~~~~~~~~
   drivers/net/ethernet/marvell/octeontx2/nic/rep.c:163:17: note: 'snprintf' output between 7 and 20 bytes into a destination of size 16
     163 |                 snprintf(ndev->name, sizeof(ndev->name), "r%dp%dv%d", rep_id,
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     164 |                          rvu_get_pf(pcifunc), (pcifunc & RVU_PFVF_FUNC_MASK));
         |                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +163 drivers/net/ethernet/marvell/octeontx2/nic/rep.c

   131	
   132	int rvu_rep_create(struct otx2_nic *priv)
   133	{
   134		int rep_cnt = priv->rep_cnt;
   135		struct net_device *ndev;
   136		struct rep_dev *rep;
   137		int rep_id, err;
   138		u16 pcifunc;
   139	
   140		priv->reps = devm_kcalloc(priv->dev, rep_cnt, sizeof(struct rep_dev), GFP_KERNEL);
   141		if (!priv->reps)
   142			return -ENOMEM;
   143	
   144		for (rep_id = 0; rep_id < rep_cnt; rep_id++) {
   145			ndev = alloc_etherdev(sizeof(*rep));
   146			if (!ndev) {
   147				dev_err(priv->dev, "PFVF representor:%d creation failed\n", rep_id);
   148				err = -ENOMEM;
   149				goto exit;
   150			}
   151	
   152			rep = netdev_priv(ndev);
   153			priv->reps[rep_id] = rep;
   154			rep->mdev = priv;
   155			rep->netdev = ndev;
   156			rep->rep_id = rep_id;
   157	
   158			ndev->min_mtu = OTX2_MIN_MTU;
   159			ndev->max_mtu = priv->hw.max_mtu;
   160			pcifunc = priv->rep_pf_map[rep_id];
   161			rep->pcifunc = pcifunc;
   162	
 > 163			snprintf(ndev->name, sizeof(ndev->name), "r%dp%dv%d", rep_id,
   164				 rvu_get_pf(pcifunc), (pcifunc & RVU_PFVF_FUNC_MASK));
   165	
   166			eth_hw_addr_random(ndev);
   167			if (register_netdev(ndev)) {
   168				dev_err(priv->dev, "PFVF reprentator registration failed\n");
   169				free_netdev(ndev);
   170				ndev->netdev_ops = NULL;
   171				goto exit;
   172			}
   173		}
   174		err = rvu_rep_napi_init(priv);
   175		if (err)
   176			goto exit;
   177	
   178		return 0;
   179	exit:
   180		rvu_rep_free_netdev(priv);
   181		return err;
   182	}
   183	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Re: [net-next PATCH 3/9] octeontx2-pf: Create representor netdev

[kernel test robot]

Hi Geetha,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Geetha-sowjanya/octeontx2-pf-Refactoring-RVU-driver/20240416-131052
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240416050616.6056-4-gakula%40marvell.com
patch subject: [net-next PATCH 3/9] octeontx2-pf: Create representor netdev
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240417/202404170922.RBiIclFT-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240417/202404170922.RBiIclFT-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404170922.RBiIclFT-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/ethernet/marvell/octeontx2/nic/rep.c:167:7: warning: variable 'err' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
     167 |                 if (register_netdev(ndev)) {
         |                     ^~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/marvell/octeontx2/nic/rep.c:181:9: note: uninitialized use occurs here
     181 |         return err;
         |                ^~~
   drivers/net/ethernet/marvell/octeontx2/nic/rep.c:167:3: note: remove the 'if' if its condition is always false
     167 |                 if (register_netdev(ndev)) {
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
     168 |                         dev_err(priv->dev, "PFVF reprentator registration failed\n");
         |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     169 |                         free_netdev(ndev);
         |                         ~~~~~~~~~~~~~~~~~~
     170 |                         ndev->netdev_ops = NULL;
         |                         ~~~~~~~~~~~~~~~~~~~~~~~~
     171 |                         goto exit;
         |                         ~~~~~~~~~~
     172 |                 }
         |                 ~
   drivers/net/ethernet/marvell/octeontx2/nic/rep.c:137:17: note: initialize the variable 'err' to silence this warning
     137 |         int rep_id, err;
         |                        ^
         |                         = 0
   1 warning generated.


vim +167 drivers/net/ethernet/marvell/octeontx2/nic/rep.c

   131	
   132	int rvu_rep_create(struct otx2_nic *priv)
   133	{
   134		int rep_cnt = priv->rep_cnt;
   135		struct net_device *ndev;
   136		struct rep_dev *rep;
   137		int rep_id, err;
   138		u16 pcifunc;
   139	
   140		priv->reps = devm_kcalloc(priv->dev, rep_cnt, sizeof(struct rep_dev), GFP_KERNEL);
   141		if (!priv->reps)
   142			return -ENOMEM;
   143	
   144		for (rep_id = 0; rep_id < rep_cnt; rep_id++) {
   145			ndev = alloc_etherdev(sizeof(*rep));
   146			if (!ndev) {
   147				dev_err(priv->dev, "PFVF representor:%d creation failed\n", rep_id);
   148				err = -ENOMEM;
   149				goto exit;
   150			}
   151	
   152			rep = netdev_priv(ndev);
   153			priv->reps[rep_id] = rep;
   154			rep->mdev = priv;
   155			rep->netdev = ndev;
   156			rep->rep_id = rep_id;
   157	
   158			ndev->min_mtu = OTX2_MIN_MTU;
   159			ndev->max_mtu = priv->hw.max_mtu;
   160			pcifunc = priv->rep_pf_map[rep_id];
   161			rep->pcifunc = pcifunc;
   162	
   163			snprintf(ndev->name, sizeof(ndev->name), "r%dp%dv%d", rep_id,
   164				 rvu_get_pf(pcifunc), (pcifunc & RVU_PFVF_FUNC_MASK));
   165	
   166			eth_hw_addr_random(ndev);
 > 167			if (register_netdev(ndev)) {
   168				dev_err(priv->dev, "PFVF reprentator registration failed\n");
   169				free_netdev(ndev);
   170				ndev->netdev_ops = NULL;
   171				goto exit;
   172			}
   173		}
   174		err = rvu_rep_napi_init(priv);
   175		if (err)
   176			goto exit;
   177	
   178		return 0;
   179	exit:
   180		rvu_rep_free_netdev(priv);
   181		return err;
   182	}
   183	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Re: [net-next PATCH 5/9] octeontx2-af: Add packet path between representor and VF

[Kalesh Anakkur Purayil]

[-- Attachment #1: Type: text/plain, Size: 19554 bytes --]

On Tue, Apr 16, 2024 at 10:38 AM Geetha sowjanya <gakula@marvell.com> wrote:
>
> This patch installs tcam rules to stree traffic representors
> and VF when swicthdev mode is set. To support this a HW loopback
> channel is reserved. Through this channel packet are routed
> between representor and VFs. "ESW_CFG" mbox is defined to
> notify AF for installing rules.
>
> Signed-off-by: Geetha sowjanya <gakula@marvell.com>
> ---
>  .../net/ethernet/marvell/octeontx2/af/mbox.h  |   7 +
>  .../net/ethernet/marvell/octeontx2/af/rvu.h   |   7 +-
>  .../marvell/octeontx2/af/rvu_devlink.c        |   6 +
>  .../ethernet/marvell/octeontx2/af/rvu_nix.c   |   7 +-
>  .../ethernet/marvell/octeontx2/af/rvu_rep.c   | 241 +++++++++++++++++-
>  .../marvell/octeontx2/af/rvu_switch.c         |  18 +-
>  .../net/ethernet/marvell/octeontx2/nic/rep.c  |  19 ++
>  7 files changed, 297 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> index c77c02730cf9..3b36da28a8f4 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> @@ -144,6 +144,7 @@ M(LMTST_TBL_SETUP,  0x00a, lmtst_tbl_setup, lmtst_tbl_setup_req,    \
>  M(SET_VF_PERM,         0x00b, set_vf_perm, set_vf_perm, msg_rsp)       \
>  M(PTP_GET_CAP,         0x00c, ptp_get_cap, msg_req, ptp_get_cap_rsp)   \
>  M(GET_REP_CNT,         0x00d, get_rep_cnt, msg_req, get_rep_cnt_rsp)   \
> +M(ESW_CFG,             0x00e, esw_cfg, esw_cfg_req, msg_rsp)   \
>  /* CGX mbox IDs (range 0x200 - 0x3FF) */                               \
>  M(CGX_START_RXTX,      0x200, cgx_start_rxtx, msg_req, msg_rsp)        \
>  M(CGX_STOP_RXTX,       0x201, cgx_stop_rxtx, msg_req, msg_rsp)         \
> @@ -1532,6 +1533,12 @@ struct get_rep_cnt_rsp {
>         u64 rsvd;
>  };
>
> +struct esw_cfg_req {
> +       struct mbox_msghdr hdr;
> +       u8 ena;
> +       u64 rsvd;
> +};
> +
>  struct flow_msg {
>         unsigned char dmac[6];
>         unsigned char smac[6];
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> index 1d76d52d7a5d..c8572d79a968 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> @@ -596,6 +596,7 @@ struct rvu {
>         u16                     rep_pcifunc;
>         int                     rep_cnt;
>         u16                     *rep2pfvf_map;
> +       u8                      rep_mode;
>  };
>
>  static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val)
> @@ -1025,7 +1026,7 @@ int rvu_ndc_fix_locked_cacheline(struct rvu *rvu, int blkaddr);
>  /* RVU Switch */
>  void rvu_switch_enable(struct rvu *rvu);
>  void rvu_switch_disable(struct rvu *rvu);
> -void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc);
> +void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc, bool ena);
>  void rvu_switch_enable_lbk_link(struct rvu *rvu, u16 pcifunc, bool ena);
>
>  int rvu_npc_set_parse_mode(struct rvu *rvu, u16 pcifunc, u64 mode, u8 dir,
> @@ -1039,4 +1040,8 @@ int rvu_mcs_flr_handler(struct rvu *rvu, u16 pcifunc);
>  void rvu_mcs_ptp_cfg(struct rvu *rvu, u8 rpm_id, u8 lmac_id, bool ena);
>  void rvu_mcs_exit(struct rvu *rvu);
>
> +/* Representor APIs */
> +int rvu_rep_pf_init(struct rvu *rvu);
> +int rvu_rep_install_mcam_rules(struct rvu *rvu);
> +void rvu_rep_update_rules(struct rvu *rvu, u16 pcifunc, bool ena);
>  #endif /* RVU_H */
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
> index 96c04f7d93f8..8a3b7fb61883 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
> @@ -1464,6 +1464,9 @@ static int rvu_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
>         struct rvu *rvu = rvu_dl->rvu;
>         struct rvu_switch *rswitch;
>
> +       if (rvu->rep_mode)
> +               return -EOPNOTSUPP;
> +
>         rswitch = &rvu->rswitch;
>         *mode = rswitch->mode;
>
> @@ -1477,6 +1480,9 @@ static int rvu_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
>         struct rvu *rvu = rvu_dl->rvu;
>         struct rvu_switch *rswitch;
>
> +       if (rvu->rep_mode)
> +               return -EOPNOTSUPP;
> +
>         rswitch = &rvu->rswitch;
>         switch (mode) {
>         case DEVLINK_ESWITCH_MODE_LEGACY:
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> index 4ef5bb7b337f..75d5c1bc00e1 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> @@ -2738,7 +2738,7 @@ void rvu_nix_tx_tl2_cfg(struct rvu *rvu, int blkaddr, u16 pcifunc,
>         int schq;
>         u64 cfg;
>
> -       if (!is_pf_cgxmapped(rvu, pf))
> +       if (!is_pf_cgxmapped(rvu, pf) && !is_rep_dev(rvu, pcifunc))
>                 return;
>
>         cfg = enable ? (BIT_ULL(12) | RVU_SWITCH_LBK_CHAN) : 0;
> @@ -4368,8 +4368,6 @@ int rvu_mbox_handler_nix_set_mac_addr(struct rvu *rvu,
>         if (test_bit(PF_SET_VF_TRUSTED, &pfvf->flags) && from_vf)
>                 ether_addr_copy(pfvf->default_mac, req->mac_addr);
>
> -       rvu_switch_update_rules(rvu, pcifunc);
> -
>         return 0;
>  }
>
> @@ -5159,7 +5157,7 @@ int rvu_mbox_handler_nix_lf_start_rx(struct rvu *rvu, struct msg_req *req,
>         pfvf = rvu_get_pfvf(rvu, pcifunc);
>         set_bit(NIXLF_INITIALIZED, &pfvf->flags);
>
> -       rvu_switch_update_rules(rvu, pcifunc);
> +       rvu_switch_update_rules(rvu, pcifunc, true);
>
>         return rvu_cgx_start_stop_io(rvu, pcifunc, true);
>  }
> @@ -5187,6 +5185,7 @@ int rvu_mbox_handler_nix_lf_stop_rx(struct rvu *rvu, struct msg_req *req,
>         if (err)
>                 return err;
>
> +       rvu_switch_update_rules(rvu, pcifunc, false);
>         rvu_cgx_tx_enable(rvu, pcifunc, true);
>
>         return 0;
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> index d07cb356d3d6..5c015e8dfbbe 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> @@ -13,6 +13,246 @@
>  #include "rvu.h"
>  #include "rvu_reg.h"
>
> +static u16 rvu_rep_get_vlan_id(struct rvu *rvu, u16 pcifunc)
> +{
> +       int id;
> +
> +       for (id = 0; id < rvu->rep_cnt; id++)
> +               if (rvu->rep2pfvf_map[id] == pcifunc)
> +                       return id;
> +       return -ENODEV;
> +}
> +
> +static int rvu_rep_tx_vlan_cfg(struct rvu *rvu,  u16 pcifunc,
> +                              u16 vlan_tci, int *vidx)
> +{
> +       struct nix_vtag_config req = {0};
> +       struct nix_vtag_config_rsp rsp = {0};
> +       u64 etype = ETH_P_8021Q;
> +       int err;
> +
> +       /* Insert vlan tag */
> +       req.hdr.pcifunc = pcifunc;
> +       req.vtag_size = VTAGSIZE_T4;
> +       req.cfg_type = 0; /* tx vlan cfg */
> +       req.tx.cfg_vtag0 = true;
> +       req.tx.vtag0 = etype << 48 | ntohs(vlan_tci);
> +
> +       err = rvu_mbox_handler_nix_vtag_cfg(rvu, &req, &rsp);
> +       if (err) {
> +               dev_err(rvu->dev, "Tx vlan config failed\n");
> +               return err;
> +       }
> +       *vidx = rsp.vtag0_idx;
> +       return 0;
> +}
> +
> +static int rvu_rep_rx_vlan_cfg(struct rvu *rvu, u16 pcifunc)
> +{
> +       struct nix_vtag_config req = {0};
> +       struct nix_vtag_config_rsp rsp;
> +
> +       /* config strip, capture and size */
> +       req.hdr.pcifunc = pcifunc;
> +       req.vtag_size = VTAGSIZE_T4;
> +       req.cfg_type = 1; /* rx vlan cfg */
> +       req.rx.vtag_type = NIX_AF_LFX_RX_VTAG_TYPE0;
> +       req.rx.strip_vtag = true;
> +       req.rx.capture_vtag = false;
> +
> +       return rvu_mbox_handler_nix_vtag_cfg(rvu, &req, &rsp);
> +}
> +
> +static int rvu_rep_install_rx_rule(struct rvu *rvu, u16 pcifunc,
> +                                  u16 entry, bool rte)
> +{
> +       struct npc_install_flow_req req = { 0 };
> +       struct npc_install_flow_rsp rsp = { 0 };
> +       struct rvu_pfvf *pfvf;
> +       u16 vlan_tci, rep_id;
> +
> +       pfvf = rvu_get_pfvf(rvu, pcifunc);
> +
> +       /* To stree the traffic from Representee to Representor */
> +       rep_id = (u16)rvu_rep_get_vlan_id(rvu, pcifunc);
> +       if (rte) {
> +               vlan_tci = rep_id | 0x1ull << 8;
> +               req.vf = rvu->rep_pcifunc;
> +               req.op = NIX_RX_ACTIONOP_UCAST;
> +               req.index = rep_id;
> +       } else {
> +               vlan_tci = rep_id;
> +               req.vf = pcifunc;
> +               req.op = NIX_RX_ACTION_DEFAULT;
> +       }
> +
> +       rvu_rep_rx_vlan_cfg(rvu, req.vf);
> +       req.entry = entry;
> +       req.hdr.pcifunc = 0; /* AF is requester */
> +       req.features = BIT_ULL(NPC_OUTER_VID) | BIT_ULL(NPC_VLAN_ETYPE_CTAG);
> +       req.vtag0_valid = true;
> +       req.vtag0_type = NIX_AF_LFX_RX_VTAG_TYPE0;
> +       req.packet.vlan_etype = ETH_P_8021Q;
> +       req.mask.vlan_etype = ETH_P_8021Q;
> +       req.packet.vlan_tci = vlan_tci;
> +       req.mask.vlan_tci = 0xffff;
> +
> +       req.channel = RVU_SWITCH_LBK_CHAN;
> +       req.chan_mask = 0xffff;
> +       req.intf = pfvf->nix_rx_intf;
> +
> +       return rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
> +}
> +
> +static int rvu_rep_install_tx_rule(struct rvu *rvu, u16 pcifunc, u16 entry,
> +                                  bool rte)
> +{
> +       struct npc_install_flow_req req = { 0 };
> +       struct npc_install_flow_rsp rsp = { 0 };
> +       struct rvu_pfvf *pfvf;
> +       int vidx, err;
> +       u16 vlan_tci;
> +       u8 lbkid;
> +
> +       pfvf = rvu_get_pfvf(rvu, pcifunc);
> +       vlan_tci = rvu_rep_get_vlan_id(rvu, pcifunc);
> +       if (rte)
> +               vlan_tci |= 0x1ull << 8;
> +
> +       err = rvu_rep_tx_vlan_cfg(rvu, pcifunc, vlan_tci, &vidx);
> +       if (err)
> +               return err;
> +
> +       lbkid = pfvf->nix_blkaddr == BLKADDR_NIX0 ? 0 : 1;
> +       req.hdr.pcifunc = 0; /* AF is requester */
> +       if (rte) {
> +               req.vf = pcifunc;
> +       } else {
> +               req.vf = rvu->rep_pcifunc;
> +               req.packet.sq_id = vlan_tci;
> +               req.mask.sq_id = 0xffff;
> +       }
> +
> +       req.entry = entry;
> +       req.intf = pfvf->nix_tx_intf;
> +       req.op = NIX_TX_ACTIONOP_UCAST_CHAN;
> +       req.index = (lbkid << 8) | RVU_SWITCH_LBK_CHAN;
> +       req.set_cntr = 1;
> +       req.vtag0_def = vidx;
> +       req.vtag0_op = 1;
> +       return rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
> +}
> +
> +int rvu_rep_install_mcam_rules(struct rvu *rvu)
> +{
> +       struct rvu_switch *rswitch = &rvu->rswitch;
> +       u16 start = rswitch->start_entry;
> +       struct rvu_hwinfo *hw = rvu->hw;
> +       u16 pcifunc, entry = 0;
> +       int pf, vf, numvfs;
> +       int err, nixlf, i;
> +       u8 rep;
> +
> +       for (pf = 1; pf < hw->total_pfs; pf++) {
> +               if (!is_pf_cgxmapped(rvu, pf))
> +                       continue;
> +
> +               pcifunc = pf << RVU_PFVF_PF_SHIFT;
> +               rvu_get_nix_blkaddr(rvu, pcifunc);
> +               rep = true;
> +               for (i = 0; i < 2; i++) {
> +                       err = rvu_rep_install_rx_rule(rvu, pcifunc, start + entry, rep);
> +                       if (err)
> +                               return err;
> +                       rswitch->entry2pcifunc[entry++] = pcifunc;
> +
> +                       err = rvu_rep_install_tx_rule(rvu, pcifunc, start + entry, rep);
> +                       if (err)
> +                               return err;
> +                       rswitch->entry2pcifunc[entry++] = pcifunc;
> +                       rep = false;
> +               }
> +
> +               rvu_get_pf_numvfs(rvu, pf, &numvfs, NULL);
> +               for (vf = 0; vf < numvfs; vf++) {
> +                       pcifunc = pf << RVU_PFVF_PF_SHIFT |
> +                                 ((vf + 1) & RVU_PFVF_FUNC_MASK);
> +                       rvu_get_nix_blkaddr(rvu, pcifunc);
> +
> +                       /* Skip installimg rules if nixlf is not attached */
> +                       err = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
> +                       if (err)
> +                               continue;
> +                       rep = true;
> +                       for (i = 0; i < 2; i++) {
> +                               err = rvu_rep_install_rx_rule(rvu, pcifunc, start + entry, rep);
> +                               if (err)
> +                                       return err;
> +                               rswitch->entry2pcifunc[entry++] = pcifunc;
> +
> +                               err = rvu_rep_install_tx_rule(rvu, pcifunc, start + entry, rep);
> +                               if (err)
> +                                       return err;
> +                               rswitch->entry2pcifunc[entry++] = pcifunc;
> +                               rep = false;
> +                       }
> +               }
> +       }
> +       return 0;
> +}
> +
> +void rvu_rep_update_rules(struct rvu *rvu, u16 pcifunc, bool ena)
> +{
> +       struct rvu_switch *rswitch = &rvu->rswitch;
> +       struct npc_mcam *mcam = &rvu->hw->mcam;
> +       u32 max = rswitch->used_entries;
> +       int blkaddr;
> +       u16 entry;
> +
> +       if (!rswitch->used_entries)
> +               return;
> +
> +       blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
> +
> +       if (blkaddr < 0)
> +               return;
> +
> +       rvu_switch_enable_lbk_link(rvu, pcifunc, ena);
> +       mutex_lock(&mcam->lock);
> +       for (entry = 0; entry < max; entry++) {
> +               if (rswitch->entry2pcifunc[entry] == pcifunc)
> +                       npc_enable_mcam_entry(rvu, mcam, blkaddr, entry, ena);
> +       }
> +       mutex_unlock(&mcam->lock);
> +}
> +
> +int rvu_rep_pf_init(struct rvu *rvu)
> +{
> +       u16 pcifunc = rvu->rep_pcifunc;
> +       struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
> +
> +       set_bit(NIXLF_INITIALIZED, &pfvf->flags);
> +       rvu_switch_enable_lbk_link(rvu, pcifunc, true);
> +       rvu_rep_rx_vlan_cfg(rvu, pcifunc);
> +       return 0;
> +}
> +
> +int rvu_mbox_handler_esw_cfg(struct rvu *rvu, struct esw_cfg_req *req,
> +                            struct msg_rsp *rsp)
> +{
> +       if (req->hdr.pcifunc != rvu->rep_pcifunc)
> +               return 0;
> +
> +       rvu->rep_mode = req->ena;
> +
> +       if (req->ena)
> +               rvu_switch_enable(rvu);
> +       else
> +               rvu_switch_disable(rvu);
> +
> +       return 0;
> +}
> +
>  int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu, struct msg_req *req,
>                                  struct get_rep_cnt_rsp *rsp)
>  {
> @@ -45,4 +285,3 @@ int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu, struct msg_req *req,
>         }
>         return 0;
>  }
> -
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
> index ceb81eebf65e..268efb7c1c15 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
> @@ -166,6 +166,8 @@ void rvu_switch_enable(struct rvu *rvu)
>
>         alloc_req.contig = true;
>         alloc_req.count = rvu->cgx_mapped_pfs + rvu->cgx_mapped_vfs;
> +       if (rvu->rep_mode)
> +               alloc_req.count = alloc_req.count * 4;
>         ret = rvu_mbox_handler_npc_mcam_alloc_entry(rvu, &alloc_req,
>                                                     &alloc_rsp);
>         if (ret) {
> @@ -189,7 +191,12 @@ void rvu_switch_enable(struct rvu *rvu)
>         rswitch->used_entries = alloc_rsp.count;
>         rswitch->start_entry = alloc_rsp.entry;
>
> -       ret = rvu_switch_install_rules(rvu);
> +       if (rvu->rep_mode) {
> +               rvu_rep_pf_init(rvu);
> +               ret = rvu_rep_install_mcam_rules(rvu);
> +       } else {
> +               ret = rvu_switch_install_rules(rvu);
> +       }
>         if (ret)
>                 goto uninstall_rules;
>
> @@ -222,6 +229,9 @@ void rvu_switch_disable(struct rvu *rvu)
>         if (!rswitch->used_entries)
>                 return;
>
> +       if (rvu->rep_mode)
> +               goto free_ents;
> +
>         for (pf = 1; pf < hw->total_pfs; pf++) {
>                 if (!is_pf_cgxmapped(rvu, pf))
>                         continue;
> @@ -249,6 +259,7 @@ void rvu_switch_disable(struct rvu *rvu)
>                 }
>         }
>
> +free_ents:
>         uninstall_req.start = rswitch->start_entry;
>         uninstall_req.end =  rswitch->start_entry + rswitch->used_entries - 1;
>         free_req.all = 1;
> @@ -258,12 +269,15 @@ void rvu_switch_disable(struct rvu *rvu)
>         kfree(rswitch->entry2pcifunc);
>  }
>
> -void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc)
> +void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc, bool ena)
>  {
>         struct rvu_switch *rswitch = &rvu->rswitch;
>         u32 max = rswitch->used_entries;
>         u16 entry;
>
> +       if (rvu->rep_mode)
> +               return rvu_rep_update_rules(rvu, pcifunc, ena);
> +
>         if (!rswitch->used_entries)
>                 return;
>
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> index 187b00156bcd..1329617f8d6f 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> @@ -28,6 +28,22 @@ MODULE_DESCRIPTION(DRV_STRING);
>  MODULE_LICENSE("GPL");
>  MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
>
> +static int rvu_eswitch_config(struct otx2_nic *priv, u8 ena)
> +{
> +       struct esw_cfg_req *req;
> +
> +       mutex_lock(&priv->mbox.lock);
> +       req = otx2_mbox_alloc_msg_esw_cfg(&priv->mbox);
> +       if (!req) {
> +               mutex_unlock(&priv->mbox.lock);
> +               return -ENOMEM;
> +       }
> +       req->ena = ena;
> +       otx2_sync_mbox_msg(&priv->mbox);
> +       mutex_unlock(&priv->mbox.lock);
> +       return 0;
> +}
> +
>  static netdev_tx_t rvu_rep_xmit(struct sk_buff *skb, struct net_device *dev)
>  {
>         struct rep_dev *rep = netdev_priv(dev);
> @@ -170,6 +186,8 @@ static void rvu_rep_free_netdev(struct otx2_nic *priv)
>
>  void rvu_rep_destroy(struct otx2_nic *priv)
>  {
> +       /* Remove mcam rules */
> +       rvu_eswitch_config(priv, false);
>         rvu_rep_free_cq_rsrc(priv);
>         rvu_rep_free_netdev(priv);
>  }
> @@ -221,6 +239,7 @@ int rvu_rep_create(struct otx2_nic *priv)
>         if (err)
>                 goto exit;
>
> +       rvu_eswitch_config(priv, true);
>         return 0;
>  exit:
>         rvu_rep_free_netdev(priv);
> --
> 2.25.1
>
>


-- 
Regards,
Kalesh A P

[-- Attachment #2: S/MIME Cryptographic Signature --]
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Re: [net-next PATCH 5/9] octeontx2-af: Add packet path between representor and VF

[Kalesh Anakkur Purayil]

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On Wed, Apr 17, 2024 at 9:40 AM Kalesh Anakkur Purayil
<kalesh-anakkur.purayil@broadcom.com> wrote:
>
> On Tue, Apr 16, 2024 at 10:38 AM Geetha sowjanya <gakula@marvell.com> wrote:
> >
> > This patch installs tcam rules to stree traffic representors
> > and VF when swicthdev mode is set. To support this a HW loopback
> > channel is reserved. Through this channel packet are routed
> > between representor and VFs. "ESW_CFG" mbox is defined to
> > notify AF for installing rules.
> >
> > Signed-off-by: Geetha sowjanya <gakula@marvell.com>
> > ---
> >  .../net/ethernet/marvell/octeontx2/af/mbox.h  |   7 +
> >  .../net/ethernet/marvell/octeontx2/af/rvu.h   |   7 +-
> >  .../marvell/octeontx2/af/rvu_devlink.c        |   6 +
> >  .../ethernet/marvell/octeontx2/af/rvu_nix.c   |   7 +-
> >  .../ethernet/marvell/octeontx2/af/rvu_rep.c   | 241 +++++++++++++++++-
> >  .../marvell/octeontx2/af/rvu_switch.c         |  18 +-
> >  .../net/ethernet/marvell/octeontx2/nic/rep.c  |  19 ++
> >  7 files changed, 297 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> > index c77c02730cf9..3b36da28a8f4 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> > +++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> > @@ -144,6 +144,7 @@ M(LMTST_TBL_SETUP,  0x00a, lmtst_tbl_setup, lmtst_tbl_setup_req,    \
> >  M(SET_VF_PERM,         0x00b, set_vf_perm, set_vf_perm, msg_rsp)       \
> >  M(PTP_GET_CAP,         0x00c, ptp_get_cap, msg_req, ptp_get_cap_rsp)   \
> >  M(GET_REP_CNT,         0x00d, get_rep_cnt, msg_req, get_rep_cnt_rsp)   \
> > +M(ESW_CFG,             0x00e, esw_cfg, esw_cfg_req, msg_rsp)   \
> >  /* CGX mbox IDs (range 0x200 - 0x3FF) */                               \
> >  M(CGX_START_RXTX,      0x200, cgx_start_rxtx, msg_req, msg_rsp)        \
> >  M(CGX_STOP_RXTX,       0x201, cgx_stop_rxtx, msg_req, msg_rsp)         \
> > @@ -1532,6 +1533,12 @@ struct get_rep_cnt_rsp {
> >         u64 rsvd;
> >  };
> >
> > +struct esw_cfg_req {
> > +       struct mbox_msghdr hdr;
> > +       u8 ena;
> > +       u64 rsvd;
> > +};
> > +
> >  struct flow_msg {
> >         unsigned char dmac[6];
> >         unsigned char smac[6];
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> > index 1d76d52d7a5d..c8572d79a968 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> > +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> > @@ -596,6 +596,7 @@ struct rvu {
> >         u16                     rep_pcifunc;
> >         int                     rep_cnt;
> >         u16                     *rep2pfvf_map;
> > +       u8                      rep_mode;
> >  };
> >
> >  static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val)
> > @@ -1025,7 +1026,7 @@ int rvu_ndc_fix_locked_cacheline(struct rvu *rvu, int blkaddr);
> >  /* RVU Switch */
> >  void rvu_switch_enable(struct rvu *rvu);
> >  void rvu_switch_disable(struct rvu *rvu);
> > -void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc);
> > +void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc, bool ena);
> >  void rvu_switch_enable_lbk_link(struct rvu *rvu, u16 pcifunc, bool ena);
> >
> >  int rvu_npc_set_parse_mode(struct rvu *rvu, u16 pcifunc, u64 mode, u8 dir,
> > @@ -1039,4 +1040,8 @@ int rvu_mcs_flr_handler(struct rvu *rvu, u16 pcifunc);
> >  void rvu_mcs_ptp_cfg(struct rvu *rvu, u8 rpm_id, u8 lmac_id, bool ena);
> >  void rvu_mcs_exit(struct rvu *rvu);
> >
> > +/* Representor APIs */
> > +int rvu_rep_pf_init(struct rvu *rvu);
> > +int rvu_rep_install_mcam_rules(struct rvu *rvu);
> > +void rvu_rep_update_rules(struct rvu *rvu, u16 pcifunc, bool ena);
> >  #endif /* RVU_H */
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
> > index 96c04f7d93f8..8a3b7fb61883 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
> > +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
> > @@ -1464,6 +1464,9 @@ static int rvu_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
> >         struct rvu *rvu = rvu_dl->rvu;
> >         struct rvu_switch *rswitch;
> >
> > +       if (rvu->rep_mode)
> > +               return -EOPNOTSUPP;
> > +
> >         rswitch = &rvu->rswitch;
> >         *mode = rswitch->mode;
> >
> > @@ -1477,6 +1480,9 @@ static int rvu_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
> >         struct rvu *rvu = rvu_dl->rvu;
> >         struct rvu_switch *rswitch;
> >
> > +       if (rvu->rep_mode)
> > +               return -EOPNOTSUPP;
> > +
> >         rswitch = &rvu->rswitch;
> >         switch (mode) {
> >         case DEVLINK_ESWITCH_MODE_LEGACY:
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> > index 4ef5bb7b337f..75d5c1bc00e1 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> > +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> > @@ -2738,7 +2738,7 @@ void rvu_nix_tx_tl2_cfg(struct rvu *rvu, int blkaddr, u16 pcifunc,
> >         int schq;
> >         u64 cfg;
> >
> > -       if (!is_pf_cgxmapped(rvu, pf))
> > +       if (!is_pf_cgxmapped(rvu, pf) && !is_rep_dev(rvu, pcifunc))
> >                 return;
> >
> >         cfg = enable ? (BIT_ULL(12) | RVU_SWITCH_LBK_CHAN) : 0;
> > @@ -4368,8 +4368,6 @@ int rvu_mbox_handler_nix_set_mac_addr(struct rvu *rvu,
> >         if (test_bit(PF_SET_VF_TRUSTED, &pfvf->flags) && from_vf)
> >                 ether_addr_copy(pfvf->default_mac, req->mac_addr);
> >
> > -       rvu_switch_update_rules(rvu, pcifunc);
> > -
> >         return 0;
> >  }
> >
> > @@ -5159,7 +5157,7 @@ int rvu_mbox_handler_nix_lf_start_rx(struct rvu *rvu, struct msg_req *req,
> >         pfvf = rvu_get_pfvf(rvu, pcifunc);
> >         set_bit(NIXLF_INITIALIZED, &pfvf->flags);
> >
> > -       rvu_switch_update_rules(rvu, pcifunc);
> > +       rvu_switch_update_rules(rvu, pcifunc, true);
> >
> >         return rvu_cgx_start_stop_io(rvu, pcifunc, true);
> >  }
> > @@ -5187,6 +5185,7 @@ int rvu_mbox_handler_nix_lf_stop_rx(struct rvu *rvu, struct msg_req *req,
> >         if (err)
> >                 return err;
> >
> > +       rvu_switch_update_rules(rvu, pcifunc, false);
> >         rvu_cgx_tx_enable(rvu, pcifunc, true);
> >
> >         return 0;
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> > index d07cb356d3d6..5c015e8dfbbe 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> > +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> > @@ -13,6 +13,246 @@
> >  #include "rvu.h"
> >  #include "rvu_reg.h"
> >
> > +static u16 rvu_rep_get_vlan_id(struct rvu *rvu, u16 pcifunc)
> > +{
> > +       int id;
> > +
> > +       for (id = 0; id < rvu->rep_cnt; id++)
> > +               if (rvu->rep2pfvf_map[id] == pcifunc)
> > +                       return id;
> > +       return -ENODEV;
> > +}
> > +
> > +static int rvu_rep_tx_vlan_cfg(struct rvu *rvu,  u16 pcifunc,
> > +                              u16 vlan_tci, int *vidx)
> > +{
> > +       struct nix_vtag_config req = {0};
> > +       struct nix_vtag_config_rsp rsp = {0};
[Kalesh] RCT order. Also I think {0} is not needed and you can just use {}
> > +       u64 etype = ETH_P_8021Q;
> > +       int err;
> > +
> > +       /* Insert vlan tag */
> > +       req.hdr.pcifunc = pcifunc;
> > +       req.vtag_size = VTAGSIZE_T4;
> > +       req.cfg_type = 0; /* tx vlan cfg */
> > +       req.tx.cfg_vtag0 = true;
> > +       req.tx.vtag0 = etype << 48 | ntohs(vlan_tci);
> > +
> > +       err = rvu_mbox_handler_nix_vtag_cfg(rvu, &req, &rsp);
> > +       if (err) {
> > +               dev_err(rvu->dev, "Tx vlan config failed\n");
> > +               return err;
> > +       }
> > +       *vidx = rsp.vtag0_idx;
> > +       return 0;
> > +}
> > +
> > +static int rvu_rep_rx_vlan_cfg(struct rvu *rvu, u16 pcifunc)
> > +{
> > +       struct nix_vtag_config req = {0};
> > +       struct nix_vtag_config_rsp rsp;
> > +
> > +       /* config strip, capture and size */
> > +       req.hdr.pcifunc = pcifunc;
> > +       req.vtag_size = VTAGSIZE_T4;
> > +       req.cfg_type = 1; /* rx vlan cfg */
> > +       req.rx.vtag_type = NIX_AF_LFX_RX_VTAG_TYPE0;
> > +       req.rx.strip_vtag = true;
> > +       req.rx.capture_vtag = false;
> > +
> > +       return rvu_mbox_handler_nix_vtag_cfg(rvu, &req, &rsp);
> > +}
> > +
> > +static int rvu_rep_install_rx_rule(struct rvu *rvu, u16 pcifunc,
> > +                                  u16 entry, bool rte)
> > +{
> > +       struct npc_install_flow_req req = { 0 };
> > +       struct npc_install_flow_rsp rsp = { 0 };
> > +       struct rvu_pfvf *pfvf;
> > +       u16 vlan_tci, rep_id;
> > +
> > +       pfvf = rvu_get_pfvf(rvu, pcifunc);
> > +
> > +       /* To stree the traffic from Representee to Representor */
[Kalesh] Typo. did you mean steer?
> > +       rep_id = (u16)rvu_rep_get_vlan_id(rvu, pcifunc);
> > +       if (rte) {
> > +               vlan_tci = rep_id | 0x1ull << 8;
> > +               req.vf = rvu->rep_pcifunc;
> > +               req.op = NIX_RX_ACTIONOP_UCAST;
> > +               req.index = rep_id;
> > +       } else {
> > +               vlan_tci = rep_id;
> > +               req.vf = pcifunc;
> > +               req.op = NIX_RX_ACTION_DEFAULT;
> > +       }
> > +
> > +       rvu_rep_rx_vlan_cfg(rvu, req.vf);
> > +       req.entry = entry;
> > +       req.hdr.pcifunc = 0; /* AF is requester */
> > +       req.features = BIT_ULL(NPC_OUTER_VID) | BIT_ULL(NPC_VLAN_ETYPE_CTAG);
> > +       req.vtag0_valid = true;
> > +       req.vtag0_type = NIX_AF_LFX_RX_VTAG_TYPE0;
> > +       req.packet.vlan_etype = ETH_P_8021Q;
> > +       req.mask.vlan_etype = ETH_P_8021Q;
> > +       req.packet.vlan_tci = vlan_tci;
> > +       req.mask.vlan_tci = 0xffff;
> > +
> > +       req.channel = RVU_SWITCH_LBK_CHAN;
> > +       req.chan_mask = 0xffff;
> > +       req.intf = pfvf->nix_rx_intf;
> > +
> > +       return rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
> > +}
> > +
> > +static int rvu_rep_install_tx_rule(struct rvu *rvu, u16 pcifunc, u16 entry,
> > +                                  bool rte)
> > +{
> > +       struct npc_install_flow_req req = { 0 };
> > +       struct npc_install_flow_rsp rsp = { 0 };
> > +       struct rvu_pfvf *pfvf;
> > +       int vidx, err;
> > +       u16 vlan_tci;
> > +       u8 lbkid;
> > +
> > +       pfvf = rvu_get_pfvf(rvu, pcifunc);
> > +       vlan_tci = rvu_rep_get_vlan_id(rvu, pcifunc);
> > +       if (rte)
> > +               vlan_tci |= 0x1ull << 8;
> > +
> > +       err = rvu_rep_tx_vlan_cfg(rvu, pcifunc, vlan_tci, &vidx);
> > +       if (err)
> > +               return err;
> > +
> > +       lbkid = pfvf->nix_blkaddr == BLKADDR_NIX0 ? 0 : 1;
> > +       req.hdr.pcifunc = 0; /* AF is requester */
> > +       if (rte) {
> > +               req.vf = pcifunc;
> > +       } else {
> > +               req.vf = rvu->rep_pcifunc;
> > +               req.packet.sq_id = vlan_tci;
> > +               req.mask.sq_id = 0xffff;
> > +       }
> > +
> > +       req.entry = entry;
> > +       req.intf = pfvf->nix_tx_intf;
> > +       req.op = NIX_TX_ACTIONOP_UCAST_CHAN;
> > +       req.index = (lbkid << 8) | RVU_SWITCH_LBK_CHAN;
> > +       req.set_cntr = 1;
> > +       req.vtag0_def = vidx;
> > +       req.vtag0_op = 1;
> > +       return rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
> > +}
> > +
> > +int rvu_rep_install_mcam_rules(struct rvu *rvu)
> > +{
> > +       struct rvu_switch *rswitch = &rvu->rswitch;
> > +       u16 start = rswitch->start_entry;
> > +       struct rvu_hwinfo *hw = rvu->hw;
> > +       u16 pcifunc, entry = 0;
> > +       int pf, vf, numvfs;
> > +       int err, nixlf, i;
> > +       u8 rep;
> > +
> > +       for (pf = 1; pf < hw->total_pfs; pf++) {
> > +               if (!is_pf_cgxmapped(rvu, pf))
> > +                       continue;
> > +
> > +               pcifunc = pf << RVU_PFVF_PF_SHIFT;
> > +               rvu_get_nix_blkaddr(rvu, pcifunc);
> > +               rep = true;
> > +               for (i = 0; i < 2; i++) {
> > +                       err = rvu_rep_install_rx_rule(rvu, pcifunc, start + entry, rep);
> > +                       if (err)
> > +                               return err;
> > +                       rswitch->entry2pcifunc[entry++] = pcifunc;
> > +
> > +                       err = rvu_rep_install_tx_rule(rvu, pcifunc, start + entry, rep);
> > +                       if (err)
> > +                               return err;
> > +                       rswitch->entry2pcifunc[entry++] = pcifunc;
> > +                       rep = false;
> > +               }
> > +
> > +               rvu_get_pf_numvfs(rvu, pf, &numvfs, NULL);
> > +               for (vf = 0; vf < numvfs; vf++) {
> > +                       pcifunc = pf << RVU_PFVF_PF_SHIFT |
> > +                                 ((vf + 1) & RVU_PFVF_FUNC_MASK);
> > +                       rvu_get_nix_blkaddr(rvu, pcifunc);
> > +
> > +                       /* Skip installimg rules if nixlf is not attached */
> > +                       err = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
> > +                       if (err)
> > +                               continue;
> > +                       rep = true;
> > +                       for (i = 0; i < 2; i++) {
> > +                               err = rvu_rep_install_rx_rule(rvu, pcifunc, start + entry, rep);
> > +                               if (err)
> > +                                       return err;
> > +                               rswitch->entry2pcifunc[entry++] = pcifunc;
> > +
> > +                               err = rvu_rep_install_tx_rule(rvu, pcifunc, start + entry, rep);
> > +                               if (err)
> > +                                       return err;
> > +                               rswitch->entry2pcifunc[entry++] = pcifunc;
> > +                               rep = false;
> > +                       }
> > +               }
> > +       }
> > +       return 0;
> > +}
> > +
> > +void rvu_rep_update_rules(struct rvu *rvu, u16 pcifunc, bool ena)
> > +{
> > +       struct rvu_switch *rswitch = &rvu->rswitch;
> > +       struct npc_mcam *mcam = &rvu->hw->mcam;
[Kalesh: maintain RCT order
> > +       u32 max = rswitch->used_entries;
> > +       int blkaddr;
> > +       u16 entry;
> > +
> > +       if (!rswitch->used_entries)
> > +               return;
> > +
> > +       blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
> > +
[Kalesh] No need of a blank line here
> > +       if (blkaddr < 0)
> > +               return;
> > +
> > +       rvu_switch_enable_lbk_link(rvu, pcifunc, ena);
> > +       mutex_lock(&mcam->lock);
> > +       for (entry = 0; entry < max; entry++) {
> > +               if (rswitch->entry2pcifunc[entry] == pcifunc)
> > +                       npc_enable_mcam_entry(rvu, mcam, blkaddr, entry, ena);
> > +       }
> > +       mutex_unlock(&mcam->lock);
> > +}
> > +
> > +int rvu_rep_pf_init(struct rvu *rvu)
> > +{
> > +       u16 pcifunc = rvu->rep_pcifunc;
> > +       struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
> > +
> > +       set_bit(NIXLF_INITIALIZED, &pfvf->flags);
> > +       rvu_switch_enable_lbk_link(rvu, pcifunc, true);
> > +       rvu_rep_rx_vlan_cfg(rvu, pcifunc);
> > +       return 0;
[Kalesh] This function returns 0 unconditionally, maybe you can change
it to void?
> > +}
> > +
> > +int rvu_mbox_handler_esw_cfg(struct rvu *rvu, struct esw_cfg_req *req,
> > +                            struct msg_rsp *rsp)
> > +{
> > +       if (req->hdr.pcifunc != rvu->rep_pcifunc)
> > +               return 0;
> > +
> > +       rvu->rep_mode = req->ena;
> > +
> > +       if (req->ena)
> > +               rvu_switch_enable(rvu);
> > +       else
> > +               rvu_switch_disable(rvu);
> > +
> > +       return 0;
[Kalesh] This function returns 0 unconditionally, maybe you can change
it to void?
> > +}
> > +
> >  int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu, struct msg_req *req,
> >                                  struct get_rep_cnt_rsp *rsp)
> >  {
> > @@ -45,4 +285,3 @@ int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu, struct msg_req *req,
> >         }
> >         return 0;
> >  }
> > -
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
> > index ceb81eebf65e..268efb7c1c15 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
> > +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
> > @@ -166,6 +166,8 @@ void rvu_switch_enable(struct rvu *rvu)
> >
> >         alloc_req.contig = true;
> >         alloc_req.count = rvu->cgx_mapped_pfs + rvu->cgx_mapped_vfs;
> > +       if (rvu->rep_mode)
> > +               alloc_req.count = alloc_req.count * 4;
> >         ret = rvu_mbox_handler_npc_mcam_alloc_entry(rvu, &alloc_req,
> >                                                     &alloc_rsp);
> >         if (ret) {
> > @@ -189,7 +191,12 @@ void rvu_switch_enable(struct rvu *rvu)
> >         rswitch->used_entries = alloc_rsp.count;
> >         rswitch->start_entry = alloc_rsp.entry;
> >
> > -       ret = rvu_switch_install_rules(rvu);
> > +       if (rvu->rep_mode) {
> > +               rvu_rep_pf_init(rvu);
> > +               ret = rvu_rep_install_mcam_rules(rvu);
> > +       } else {
> > +               ret = rvu_switch_install_rules(rvu);
> > +       }
> >         if (ret)
> >                 goto uninstall_rules;
> >
> > @@ -222,6 +229,9 @@ void rvu_switch_disable(struct rvu *rvu)
> >         if (!rswitch->used_entries)
> >                 return;
> >
> > +       if (rvu->rep_mode)
> > +               goto free_ents;
> > +
> >         for (pf = 1; pf < hw->total_pfs; pf++) {
> >                 if (!is_pf_cgxmapped(rvu, pf))
> >                         continue;
> > @@ -249,6 +259,7 @@ void rvu_switch_disable(struct rvu *rvu)
> >                 }
> >         }
> >
> > +free_ents:
> >         uninstall_req.start = rswitch->start_entry;
> >         uninstall_req.end =  rswitch->start_entry + rswitch->used_entries - 1;
> >         free_req.all = 1;
> > @@ -258,12 +269,15 @@ void rvu_switch_disable(struct rvu *rvu)
> >         kfree(rswitch->entry2pcifunc);
> >  }
> >
> > -void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc)
> > +void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc, bool ena)
> >  {
> >         struct rvu_switch *rswitch = &rvu->rswitch;
> >         u32 max = rswitch->used_entries;
> >         u16 entry;
> >
> > +       if (rvu->rep_mode)
> > +               return rvu_rep_update_rules(rvu, pcifunc, ena);
> > +
> >         if (!rswitch->used_entries)
> >                 return;
> >
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> > index 187b00156bcd..1329617f8d6f 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> > +++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> > @@ -28,6 +28,22 @@ MODULE_DESCRIPTION(DRV_STRING);
> >  MODULE_LICENSE("GPL");
> >  MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
> >
> > +static int rvu_eswitch_config(struct otx2_nic *priv, u8 ena)
> > +{
> > +       struct esw_cfg_req *req;
> > +
> > +       mutex_lock(&priv->mbox.lock);
> > +       req = otx2_mbox_alloc_msg_esw_cfg(&priv->mbox);
> > +       if (!req) {
> > +               mutex_unlock(&priv->mbox.lock);
> > +               return -ENOMEM;
> > +       }
> > +       req->ena = ena;
> > +       otx2_sync_mbox_msg(&priv->mbox);
> > +       mutex_unlock(&priv->mbox.lock);
> > +       return 0;
> > +}
> > +
> >  static netdev_tx_t rvu_rep_xmit(struct sk_buff *skb, struct net_device *dev)
> >  {
> >         struct rep_dev *rep = netdev_priv(dev);
> > @@ -170,6 +186,8 @@ static void rvu_rep_free_netdev(struct otx2_nic *priv)
> >
> >  void rvu_rep_destroy(struct otx2_nic *priv)
> >  {
> > +       /* Remove mcam rules */
> > +       rvu_eswitch_config(priv, false);
> >         rvu_rep_free_cq_rsrc(priv);
> >         rvu_rep_free_netdev(priv);
> >  }
> > @@ -221,6 +239,7 @@ int rvu_rep_create(struct otx2_nic *priv)
> >         if (err)
> >                 goto exit;
> >
> > +       rvu_eswitch_config(priv, true);
> >         return 0;
> >  exit:
> >         rvu_rep_free_netdev(priv);
> > --
> > 2.25.1
> >
> >
>
>
> --
> Regards,
> Kalesh A P



-- 
Regards,
Kalesh A P

[-- Attachment #2: S/MIME Cryptographic Signature --]
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Re: [net-next PATCH 3/9] octeontx2-pf: Create representor netdev

[Kalesh Anakkur Purayil]

[-- Attachment #1: Type: text/plain, Size: 10720 bytes --]

On Tue, Apr 16, 2024 at 10:37 AM Geetha sowjanya <gakula@marvell.com> wrote:
>
> Adds initial devlink support to set/get the switchdev mode.
> Representor netdevs are created for each rvu devices when
> the switch mode is set to 'switchdev'. These netdevs are
> be used to control and configure VFs.
>
> Signed-off-by: Geetha sowjanya <gakula@marvell.com>
> ---
>  .../marvell/octeontx2/nic/otx2_devlink.c      |  48 ++++++
>  .../net/ethernet/marvell/octeontx2/nic/rep.c  | 159 ++++++++++++++++++
>  .../net/ethernet/marvell/octeontx2/nic/rep.h  |   2 +
>  3 files changed, 209 insertions(+)
>
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c
> index 4e1130496573..f4f5f5d93c7e 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c
> @@ -76,7 +76,53 @@ static const struct devlink_param otx2_dl_params[] = {
>                              otx2_dl_mcam_count_validate),
>  };
>
> +#ifdef CONFIG_RVU_ESWITCH
> +static int otx2_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
> +{
> +       struct otx2_devlink *otx2_dl = devlink_priv(devlink);
> +       struct otx2_nic *pfvf = otx2_dl->pfvf;
> +
> +       if (!is_rep_dev(pfvf->pdev))
> +               return -EOPNOTSUPP;
> +
> +       *mode = pfvf->esw_mode;
> +
> +       return 0;
> +}
> +
> +static int otx2_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
> +                                        struct netlink_ext_ack *extack)
> +{
> +       struct otx2_devlink *otx2_dl = devlink_priv(devlink);
> +       struct otx2_nic *pfvf = otx2_dl->pfvf;
> +
> +       if (!is_rep_dev(pfvf->pdev))
> +               return -EOPNOTSUPP;
> +
> +       if (pfvf->esw_mode == mode)
> +               return 0;
> +
> +       pfvf->esw_mode = mode;
[Kalesh] Move this assignment after the switch block. Else, you will
end up updating pfvf->esw_mode to an unsupported mode even though
drover returns error.
> +       switch (mode) {
> +       case DEVLINK_ESWITCH_MODE_LEGACY:
> +               rvu_rep_destroy(pfvf);
> +               break;
> +       case DEVLINK_ESWITCH_MODE_SWITCHDEV:
> +               rvu_rep_create(pfvf);
> +               break;
> +       default:
> +               return -EINVAL;
> +       }
> +
> +       return 0;
> +}
> +#endif
> +
>  static const struct devlink_ops otx2_devlink_ops = {
> +#ifdef CONFIG_RVU_ESWITCH
> +       .eswitch_mode_get = otx2_devlink_eswitch_mode_get,
> +       .eswitch_mode_set = otx2_devlink_eswitch_mode_set,
> +#endif
>  };
>
>  int otx2_register_dl(struct otx2_nic *pfvf)
> @@ -112,6 +158,7 @@ int otx2_register_dl(struct otx2_nic *pfvf)
>         devlink_free(dl);
>         return err;
>  }
> +EXPORT_SYMBOL(otx2_register_dl);
>
>  void otx2_unregister_dl(struct otx2_nic *pfvf)
>  {
> @@ -123,3 +170,4 @@ void otx2_unregister_dl(struct otx2_nic *pfvf)
>                                   ARRAY_SIZE(otx2_dl_params));
>         devlink_free(dl);
>  }
> +EXPORT_SYMBOL(otx2_unregister_dl);
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> index b892a7fe3ddc..fd55ef40c934 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> @@ -28,6 +28,159 @@ MODULE_DESCRIPTION(DRV_STRING);
>  MODULE_LICENSE("GPL");
>  MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
>
> +static int rvu_rep_napi_init(struct otx2_nic *priv)
> +{
> +       struct otx2_cq_poll *cq_poll = NULL;
> +       struct otx2_qset *qset = &priv->qset;
> +       struct otx2_hw *hw = &priv->hw;
> +       int err = 0, qidx, vec;
> +       char *irq_name;
> +
> +       qset->napi = kcalloc(hw->cint_cnt, sizeof(*cq_poll), GFP_KERNEL);
> +       if (!qset->napi)
> +               return -ENOMEM;
> +
> +       /* Register NAPI handler */
> +       for (qidx = 0; qidx < hw->cint_cnt; qidx++) {
> +               cq_poll = &qset->napi[qidx];
> +               cq_poll->cint_idx = qidx;
> +               cq_poll->cq_ids[CQ_RX] =
> +                       (qidx <  hw->rx_queues) ? qidx : CINT_INVALID_CQ;
> +               cq_poll->cq_ids[CQ_TX] = (qidx < hw->tx_queues) ?
> +                                         qidx + hw->rx_queues : CINT_INVALID_CQ;
> +               cq_poll->cq_ids[CQ_XDP] = CINT_INVALID_CQ;
> +               cq_poll->cq_ids[CQ_QOS] = CINT_INVALID_CQ;
> +
> +               cq_poll->dev = (void *)priv;
> +               netif_napi_add(priv->reps[qidx]->netdev, &cq_poll->napi,
> +                              otx2_napi_handler);
> +               napi_enable(&cq_poll->napi);
> +       }
> +       /* Register CQ IRQ handlers */
> +       vec = hw->nix_msixoff + NIX_LF_CINT_VEC_START;
> +       for (qidx = 0; qidx < hw->cint_cnt; qidx++) {
> +               irq_name = &hw->irq_name[vec * NAME_SIZE];
> +
> +               snprintf(irq_name, NAME_SIZE, "rep%d-rxtx-%d", qidx, qidx);
> +
> +               err = request_irq(pci_irq_vector(priv->pdev, vec),
> +                                 otx2_cq_intr_handler, 0, irq_name,
> +                                 &qset->napi[qidx]);
> +               if (err) {
> +                       dev_err(priv->dev,
> +                               "RVU REP IRQ registration failed for CQ%d\n", qidx);
> +                       goto err_free_cints;
> +               }
> +               vec++;
> +
> +               /* Enable CQ IRQ */
> +               otx2_write64(priv, NIX_LF_CINTX_INT(qidx), BIT_ULL(0));
> +               otx2_write64(priv, NIX_LF_CINTX_ENA_W1S(qidx), BIT_ULL(0));
> +       }
> +       priv->flags &= ~OTX2_FLAG_INTF_DOWN;
> +       return 0;
> +
> +err_free_cints:
> +       otx2_free_cints(priv, qidx);
> +       otx2_disable_napi(priv);
> +       return err;
> +}
> +
> +static void rvu_rep_free_cq_rsrc(struct otx2_nic *priv)
> +{
> +       struct otx2_cq_poll *cq_poll = NULL;
> +       struct otx2_qset *qset = &priv->qset;
> +       int qidx, vec;
> +
> +       /* Cleanup CQ NAPI and IRQ */
> +       vec = priv->hw.nix_msixoff + NIX_LF_CINT_VEC_START;
> +       for (qidx = 0; qidx < priv->hw.cint_cnt; qidx++) {
> +               /* Disable interrupt */
> +               otx2_write64(priv, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0));
> +
> +               synchronize_irq(pci_irq_vector(priv->pdev, vec));
> +
> +               cq_poll = &qset->napi[qidx];
> +               napi_synchronize(&cq_poll->napi);
> +               vec++;
> +       }
> +       otx2_free_cints(priv, priv->hw.cint_cnt);
> +       otx2_disable_napi(priv);
> +}
> +
> +static void rvu_rep_free_netdev(struct otx2_nic *priv)
> +{
> +       struct rep_dev *rep;
> +       int rep_id;
> +
> +       for (rep_id = 0; rep_id < priv->rep_cnt; rep_id++) {
> +               rep = priv->reps[rep_id];
> +               if (rep && rep->netdev->netdev_ops) {
> +                       unregister_netdev(rep->netdev);
> +                       free_netdev(rep->netdev);
> +               }
> +       }
> +       devm_kfree(priv->dev, priv->reps);
> +}
> +
> +void rvu_rep_destroy(struct otx2_nic *priv)
> +{
> +       rvu_rep_free_cq_rsrc(priv);
> +       rvu_rep_free_netdev(priv);
> +}
> +
> +int rvu_rep_create(struct otx2_nic *priv)
> +{
> +       int rep_cnt = priv->rep_cnt;
> +       struct net_device *ndev;
> +       struct rep_dev *rep;
> +       int rep_id, err;
> +       u16 pcifunc;
> +
> +       priv->reps = devm_kcalloc(priv->dev, rep_cnt, sizeof(struct rep_dev), GFP_KERNEL);
> +       if (!priv->reps)
> +               return -ENOMEM;
> +
> +       for (rep_id = 0; rep_id < rep_cnt; rep_id++) {
> +               ndev = alloc_etherdev(sizeof(*rep));
> +               if (!ndev) {
> +                       dev_err(priv->dev, "PFVF representor:%d creation failed\n", rep_id);
> +                       err = -ENOMEM;
> +                       goto exit;
> +               }
> +
> +               rep = netdev_priv(ndev);
> +               priv->reps[rep_id] = rep;
> +               rep->mdev = priv;
> +               rep->netdev = ndev;
> +               rep->rep_id = rep_id;
> +
> +               ndev->min_mtu = OTX2_MIN_MTU;
> +               ndev->max_mtu = priv->hw.max_mtu;
> +               pcifunc = priv->rep_pf_map[rep_id];
> +               rep->pcifunc = pcifunc;
> +
> +               snprintf(ndev->name, sizeof(ndev->name), "r%dp%dv%d", rep_id,
> +                        rvu_get_pf(pcifunc), (pcifunc & RVU_PFVF_FUNC_MASK));
> +
> +               eth_hw_addr_random(ndev);
> +               if (register_netdev(ndev)) {
> +                       dev_err(priv->dev, "PFVF reprentator registration failed\n");
> +                       free_netdev(ndev);
> +                       ndev->netdev_ops = NULL;
[Kalesh] update "rc" with the return status of register_netdev()
> +                       goto exit;
> +               }
> +       }
> +       err = rvu_rep_napi_init(priv);
> +       if (err)
> +               goto exit;
> +
> +       return 0;
> +exit:
> +       rvu_rep_free_netdev(priv);
> +       return err;
> +}
> +
>  static int rvu_rep_rsrc_free(struct otx2_nic *priv)
>  {
>         struct otx2_qset *qset = &priv->qset;
> @@ -162,6 +315,10 @@ static int rvu_rep_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>         if (err)
>                 goto err_detach_rsrc;
>
> +       err = otx2_register_dl(priv);
> +       if (err)
> +               goto err_detach_rsrc;
> +
>         return 0;
>
>  err_detach_rsrc:
> @@ -183,6 +340,8 @@ static void rvu_rep_remove(struct pci_dev *pdev)
>  {
>         struct otx2_nic *priv = pci_get_drvdata(pdev);
>
> +       otx2_unregister_dl(priv);
> +       rvu_rep_destroy(priv);
>         rvu_rep_rsrc_free(priv);
>         otx2_detach_resources(&priv->mbox);
>         if (priv->hw.lmt_info)
> diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
> index 30cce17eb48b..be6c939e5cba 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
> +++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
> @@ -29,4 +29,6 @@ static inline bool is_rep_dev(struct pci_dev *pdev)
>         return pdev->device == PCI_DEVID_RVU_REP;
>  }
>
> +int rvu_rep_create(struct otx2_nic *priv);
> +void rvu_rep_destroy(struct otx2_nic *priv);
>  #endif /* REP_H */
> --
> 2.25.1
>
>


-- 
Regards,
Kalesh A P

[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4239 bytes --]

Re: [net-next PATCH 2/9] octeontx2-pf: RVU representor driver

[Dan Carpenter]

Hi Geetha,

kernel test robot noticed the following build warnings:

url:    https://github.com/intel-lab-lkp/linux/commits/Geetha-sowjanya/octeontx2-pf-Refactoring-RVU-driver/20240416-131052
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240416050616.6056-3-gakula%40marvell.com
patch subject: [net-next PATCH 2/9] octeontx2-pf: RVU representor driver
config: alpha-randconfig-r081-20240417 (https://download.01.org/0day-ci/archive/20240417/202404172056.MpOMwcGB-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.2.0

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
| Closes: https://lore.kernel.org/r/202404172056.MpOMwcGB-lkp@intel.com/

New smatch warnings:
drivers/net/ethernet/marvell/octeontx2/nic/rep.c:95 rvu_get_rep_cnt() warn: passing zero to 'PTR_ERR'
drivers/net/ethernet/marvell/octeontx2/nic/rep.c:140 rvu_rep_probe() warn: missing unwind goto?

vim +/PTR_ERR +95 drivers/net/ethernet/marvell/octeontx2/nic/rep.c

1e15129a77b419 Geetha sowjanya 2024-04-16   76  static int rvu_get_rep_cnt(struct otx2_nic *priv)
1e15129a77b419 Geetha sowjanya 2024-04-16   77  {
1e15129a77b419 Geetha sowjanya 2024-04-16   78  	struct get_rep_cnt_rsp *rsp;
1e15129a77b419 Geetha sowjanya 2024-04-16   79  	struct mbox_msghdr *msghdr;
1e15129a77b419 Geetha sowjanya 2024-04-16   80  	struct msg_req *req;
1e15129a77b419 Geetha sowjanya 2024-04-16   81  	int err, rep;
1e15129a77b419 Geetha sowjanya 2024-04-16   82  
1e15129a77b419 Geetha sowjanya 2024-04-16   83  	mutex_lock(&priv->mbox.lock);
1e15129a77b419 Geetha sowjanya 2024-04-16   84  	req = otx2_mbox_alloc_msg_get_rep_cnt(&priv->mbox);
1e15129a77b419 Geetha sowjanya 2024-04-16   85  	if (!req) {
1e15129a77b419 Geetha sowjanya 2024-04-16   86  		mutex_unlock(&priv->mbox.lock);
1e15129a77b419 Geetha sowjanya 2024-04-16   87  		return -ENOMEM;
1e15129a77b419 Geetha sowjanya 2024-04-16   88  	}
1e15129a77b419 Geetha sowjanya 2024-04-16   89  	err = otx2_sync_mbox_msg(&priv->mbox);
1e15129a77b419 Geetha sowjanya 2024-04-16   90  	if (err)
1e15129a77b419 Geetha sowjanya 2024-04-16   91  		goto exit;
1e15129a77b419 Geetha sowjanya 2024-04-16   92  
1e15129a77b419 Geetha sowjanya 2024-04-16   93  	msghdr = otx2_mbox_get_rsp(&priv->mbox.mbox, 0, &req->hdr);
1e15129a77b419 Geetha sowjanya 2024-04-16   94  	if (IS_ERR(msghdr)) {
1e15129a77b419 Geetha sowjanya 2024-04-16  @95  		err = PTR_ERR(rsp);
                                                                              ^^^
s/rsp/msghdr/

1e15129a77b419 Geetha sowjanya 2024-04-16   96  		goto exit;
1e15129a77b419 Geetha sowjanya 2024-04-16   97  	}
1e15129a77b419 Geetha sowjanya 2024-04-16   98  
1e15129a77b419 Geetha sowjanya 2024-04-16   99  	rsp = (struct get_rep_cnt_rsp *)msghdr;
1e15129a77b419 Geetha sowjanya 2024-04-16  100  	priv->hw.tx_queues = rsp->rep_cnt;
1e15129a77b419 Geetha sowjanya 2024-04-16  101  	priv->hw.rx_queues = rsp->rep_cnt;
1e15129a77b419 Geetha sowjanya 2024-04-16  102  	priv->rep_cnt = rsp->rep_cnt;
1e15129a77b419 Geetha sowjanya 2024-04-16  103  	for (rep = 0; rep < priv->rep_cnt; rep++)
1e15129a77b419 Geetha sowjanya 2024-04-16  104  		priv->rep_pf_map[rep] = rsp->rep_pf_map[rep];
1e15129a77b419 Geetha sowjanya 2024-04-16  105  
1e15129a77b419 Geetha sowjanya 2024-04-16  106  exit:
1e15129a77b419 Geetha sowjanya 2024-04-16  107  	mutex_unlock(&priv->mbox.lock);
1e15129a77b419 Geetha sowjanya 2024-04-16  108  	return err;
1e15129a77b419 Geetha sowjanya 2024-04-16  109  }
1e15129a77b419 Geetha sowjanya 2024-04-16  110  
1e15129a77b419 Geetha sowjanya 2024-04-16  111  static int rvu_rep_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1e15129a77b419 Geetha sowjanya 2024-04-16  112  {
1e15129a77b419 Geetha sowjanya 2024-04-16  113  	struct device *dev = &pdev->dev;
1e15129a77b419 Geetha sowjanya 2024-04-16  114  	struct otx2_nic *priv;
1e15129a77b419 Geetha sowjanya 2024-04-16  115  	struct otx2_hw *hw;
1e15129a77b419 Geetha sowjanya 2024-04-16  116  	int err;
1e15129a77b419 Geetha sowjanya 2024-04-16  117  
1e15129a77b419 Geetha sowjanya 2024-04-16  118  	err = pcim_enable_device(pdev);
1e15129a77b419 Geetha sowjanya 2024-04-16  119  	if (err) {
1e15129a77b419 Geetha sowjanya 2024-04-16  120  		dev_err(dev, "Failed to enable PCI device\n");
1e15129a77b419 Geetha sowjanya 2024-04-16  121  		return err;
1e15129a77b419 Geetha sowjanya 2024-04-16  122  	}
1e15129a77b419 Geetha sowjanya 2024-04-16  123  
1e15129a77b419 Geetha sowjanya 2024-04-16  124  	err = pci_request_regions(pdev, DRV_NAME);
1e15129a77b419 Geetha sowjanya 2024-04-16  125  	if (err) {
1e15129a77b419 Geetha sowjanya 2024-04-16  126  		dev_err(dev, "PCI request regions failed 0x%x\n", err);
1e15129a77b419 Geetha sowjanya 2024-04-16  127  		return err;
1e15129a77b419 Geetha sowjanya 2024-04-16  128  	}
1e15129a77b419 Geetha sowjanya 2024-04-16  129  
1e15129a77b419 Geetha sowjanya 2024-04-16  130  	err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
1e15129a77b419 Geetha sowjanya 2024-04-16  131  	if (err) {
1e15129a77b419 Geetha sowjanya 2024-04-16  132  		dev_err(dev, "DMA mask config failed, abort\n");
1e15129a77b419 Geetha sowjanya 2024-04-16  133  		goto err_release_regions;
1e15129a77b419 Geetha sowjanya 2024-04-16  134  	}
1e15129a77b419 Geetha sowjanya 2024-04-16  135  
1e15129a77b419 Geetha sowjanya 2024-04-16  136  	pci_set_master(pdev);
1e15129a77b419 Geetha sowjanya 2024-04-16  137  
1e15129a77b419 Geetha sowjanya 2024-04-16  138  	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
1e15129a77b419 Geetha sowjanya 2024-04-16  139  	if (!priv)
1e15129a77b419 Geetha sowjanya 2024-04-16 @140  		return -ENOMEM;

goto err_release_regions.

1e15129a77b419 Geetha sowjanya 2024-04-16  141  	pci_set_drvdata(pdev, priv);
1e15129a77b419 Geetha sowjanya 2024-04-16  142  	priv->pdev = pdev;
1e15129a77b419 Geetha sowjanya 2024-04-16  143  	priv->dev = dev;
1e15129a77b419 Geetha sowjanya 2024-04-16  144  	priv->flags |= OTX2_FLAG_INTF_DOWN;
1e15129a77b419 Geetha sowjanya 2024-04-16  145  	priv->flags |= OTX2_FLAG_REP_MODE_ENABLED;
1e15129a77b419 Geetha sowjanya 2024-04-16  146  
1e15129a77b419 Geetha sowjanya 2024-04-16  147  	hw = &priv->hw;
1e15129a77b419 Geetha sowjanya 2024-04-16  148  	hw->pdev = pdev;
1e15129a77b419 Geetha sowjanya 2024-04-16  149  	hw->max_queues = OTX2_MAX_CQ_CNT;
1e15129a77b419 Geetha sowjanya 2024-04-16  150  	hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN;
1e15129a77b419 Geetha sowjanya 2024-04-16  151  	hw->xqe_size = 128;
1e15129a77b419 Geetha sowjanya 2024-04-16  152  
1e15129a77b419 Geetha sowjanya 2024-04-16  153  	err = otx2_init_rsrc(pdev, priv);
1e15129a77b419 Geetha sowjanya 2024-04-16  154  	if (err)
1e15129a77b419 Geetha sowjanya 2024-04-16  155  		goto err_release_regions;
1e15129a77b419 Geetha sowjanya 2024-04-16  156  
1e15129a77b419 Geetha sowjanya 2024-04-16  157  	err = rvu_get_rep_cnt(priv);
1e15129a77b419 Geetha sowjanya 2024-04-16  158  	if (err)
1e15129a77b419 Geetha sowjanya 2024-04-16  159  		goto err_detach_rsrc;
1e15129a77b419 Geetha sowjanya 2024-04-16  160  
1e15129a77b419 Geetha sowjanya 2024-04-16  161  	err = rvu_rep_rsrc_init(priv);
1e15129a77b419 Geetha sowjanya 2024-04-16  162  	if (err)
1e15129a77b419 Geetha sowjanya 2024-04-16  163  		goto err_detach_rsrc;
1e15129a77b419 Geetha sowjanya 2024-04-16  164  
1e15129a77b419 Geetha sowjanya 2024-04-16  165  	return 0;
1e15129a77b419 Geetha sowjanya 2024-04-16  166  
1e15129a77b419 Geetha sowjanya 2024-04-16  167  err_detach_rsrc:
1e15129a77b419 Geetha sowjanya 2024-04-16  168  	if (priv->hw.lmt_info)
1e15129a77b419 Geetha sowjanya 2024-04-16  169  		free_percpu(priv->hw.lmt_info);
1e15129a77b419 Geetha sowjanya 2024-04-16  170  	if (test_bit(CN10K_LMTST, &priv->hw.cap_flag))
1e15129a77b419 Geetha sowjanya 2024-04-16  171  		qmem_free(priv->dev, priv->dync_lmt);
1e15129a77b419 Geetha sowjanya 2024-04-16  172  	otx2_detach_resources(&priv->mbox);
1e15129a77b419 Geetha sowjanya 2024-04-16  173  	otx2_disable_mbox_intr(priv);
1e15129a77b419 Geetha sowjanya 2024-04-16  174  	otx2_pfaf_mbox_destroy(priv);
1e15129a77b419 Geetha sowjanya 2024-04-16  175  	pci_free_irq_vectors(pdev);
1e15129a77b419 Geetha sowjanya 2024-04-16  176  err_release_regions:
1e15129a77b419 Geetha sowjanya 2024-04-16  177  	pci_set_drvdata(pdev, NULL);
1e15129a77b419 Geetha sowjanya 2024-04-16  178  	pci_release_regions(pdev);
1e15129a77b419 Geetha sowjanya 2024-04-16  179  	return err;
1e15129a77b419 Geetha sowjanya 2024-04-16  180  }

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

RE: [EXTERNAL] Re: [net-next PATCH 3/9] octeontx2-pf: Create representor netdev

[Geethasowjanya Akula]

Hi Kalesh,



> -----Original Message-----
> From: Kalesh Anakkur Purayil <kalesh-anakkur.purayil@broadcom.com>
> Sent: Wednesday, April 17, 2024 9:58 AM
> To: Geethasowjanya Akula <gakula@marvell.com>
> Cc: netdev@vger.kernel.org; linux-kernel@vger.kernel.org; kuba@kernel.org;
> davem@davemloft.net; pabeni@redhat.com; edumazet@google.com; Sunil
> Kovvuri Goutham <sgoutham@marvell.com>; Subbaraya Sundeep Bhatta
> <sbhatta@marvell.com>; Hariprasad Kelam <hkelam@marvell.com>
> Subject: [EXTERNAL] Re: [net-next PATCH 3/9] octeontx2-pf: Create
> representor netdev
> ----------------------------------------------------------------------
> On Tue, Apr 16, 2024 at 10:37 AM Geetha sowjanya <gakula@marvell.com>
> wrote:
> >
> > Adds initial devlink support to set/get the switchdev mode.
> > Representor netdevs are created for each rvu devices when
> > the switch mode is set to 'switchdev'. These netdevs are
> > be used to control and configure VFs.
> >
> > Signed-off-by: Geetha sowjanya <gakula@marvell.com>
> > ---
> >  .../marvell/octeontx2/nic/otx2_devlink.c      |  48 ++++++
> >  .../net/ethernet/marvell/octeontx2/nic/rep.c  | 159 ++++++++++++++++++
> >  .../net/ethernet/marvell/octeontx2/nic/rep.h  |   2 +
> >  3 files changed, 209 insertions(+)
> >
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c
> b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c
> > index 4e1130496573..f4f5f5d93c7e 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c
> > +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_devlink.c
> > @@ -76,7 +76,53 @@ static const struct devlink_param otx2_dl_params[] =
> {
> >                              otx2_dl_mcam_count_validate),
> >  };
> >
> > +#ifdef CONFIG_RVU_ESWITCH
> > +static int otx2_devlink_eswitch_mode_get(struct devlink *devlink, u16
> *mode)
> > +{
> > +       struct otx2_devlink *otx2_dl = devlink_priv(devlink);
> > +       struct otx2_nic *pfvf = otx2_dl->pfvf;
> > +
> > +       if (!is_rep_dev(pfvf->pdev))
> > +               return -EOPNOTSUPP;
> > +
> > +       *mode = pfvf->esw_mode;
> > +
> > +       return 0;
> > +}
> > +
> > +static int otx2_devlink_eswitch_mode_set(struct devlink *devlink, u16
> mode,
> > +                                        struct netlink_ext_ack *extack)
> > +{
> > +       struct otx2_devlink *otx2_dl = devlink_priv(devlink);
> > +       struct otx2_nic *pfvf = otx2_dl->pfvf;
> > +
> > +       if (!is_rep_dev(pfvf->pdev))
> > +               return -EOPNOTSUPP;
> > +
> > +       if (pfvf->esw_mode == mode)
> > +               return 0;
> > +
> > +       pfvf->esw_mode = mode;
> [Kalesh] Move this assignment after the switch block. Else, you will
> end up updating pfvf->esw_mode to an unsupported mode even though
> drover returns error.
Ack.
> > +       switch (mode) {
> > +       case DEVLINK_ESWITCH_MODE_LEGACY:
> > +               rvu_rep_destroy(pfvf);
> > +               break;
> > +       case DEVLINK_ESWITCH_MODE_SWITCHDEV:
> > +               rvu_rep_create(pfvf);
> > +               break;
> > +       default:
> > +               return -EINVAL;
> > +       }
> > +
> > +       return 0;
> > +}
> > +#endif
> > +
> >  static const struct devlink_ops otx2_devlink_ops = {
> > +#ifdef CONFIG_RVU_ESWITCH
> > +       .eswitch_mode_get = otx2_devlink_eswitch_mode_get,
> > +       .eswitch_mode_set = otx2_devlink_eswitch_mode_set,
> > +#endif
> >  };
> >
> >  int otx2_register_dl(struct otx2_nic *pfvf)
> > @@ -112,6 +158,7 @@ int otx2_register_dl(struct otx2_nic *pfvf)
> >         devlink_free(dl);
> >         return err;
> >  }
> > +EXPORT_SYMBOL(otx2_register_dl);
> >
> >  void otx2_unregister_dl(struct otx2_nic *pfvf)
> >  {
> > @@ -123,3 +170,4 @@ void otx2_unregister_dl(struct otx2_nic *pfvf)
> >                                   ARRAY_SIZE(otx2_dl_params));
> >         devlink_free(dl);
> >  }
> > +EXPORT_SYMBOL(otx2_unregister_dl);
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> > index b892a7fe3ddc..fd55ef40c934 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> > +++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> > @@ -28,6 +28,159 @@ MODULE_DESCRIPTION(DRV_STRING);
> >  MODULE_LICENSE("GPL");
> >  MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
> >
> > +static int rvu_rep_napi_init(struct otx2_nic *priv)
> > +{
> > +       struct otx2_cq_poll *cq_poll = NULL;
> > +       struct otx2_qset *qset = &priv->qset;
> > +       struct otx2_hw *hw = &priv->hw;
> > +       int err = 0, qidx, vec;
> > +       char *irq_name;
> > +
> > +       qset->napi = kcalloc(hw->cint_cnt, sizeof(*cq_poll), GFP_KERNEL);
> > +       if (!qset->napi)
> > +               return -ENOMEM;
> > +
> > +       /* Register NAPI handler */
> > +       for (qidx = 0; qidx < hw->cint_cnt; qidx++) {
> > +               cq_poll = &qset->napi[qidx];
> > +               cq_poll->cint_idx = qidx;
> > +               cq_poll->cq_ids[CQ_RX] =
> > +                       (qidx <  hw->rx_queues) ? qidx : CINT_INVALID_CQ;
> > +               cq_poll->cq_ids[CQ_TX] = (qidx < hw->tx_queues) ?
> > +                                         qidx + hw->rx_queues : CINT_INVALID_CQ;
> > +               cq_poll->cq_ids[CQ_XDP] = CINT_INVALID_CQ;
> > +               cq_poll->cq_ids[CQ_QOS] = CINT_INVALID_CQ;
> > +
> > +               cq_poll->dev = (void *)priv;
> > +               netif_napi_add(priv->reps[qidx]->netdev, &cq_poll->napi,
> > +                              otx2_napi_handler);
> > +               napi_enable(&cq_poll->napi);
> > +       }
> > +       /* Register CQ IRQ handlers */
> > +       vec = hw->nix_msixoff + NIX_LF_CINT_VEC_START;
> > +       for (qidx = 0; qidx < hw->cint_cnt; qidx++) {
> > +               irq_name = &hw->irq_name[vec * NAME_SIZE];
> > +
> > +               snprintf(irq_name, NAME_SIZE, "rep%d-rxtx-%d", qidx, qidx);
> > +
> > +               err = request_irq(pci_irq_vector(priv->pdev, vec),
> > +                                 otx2_cq_intr_handler, 0, irq_name,
> > +                                 &qset->napi[qidx]);
> > +               if (err) {
> > +                       dev_err(priv->dev,
> > +                               "RVU REP IRQ registration failed for CQ%d\n", qidx);
> > +                       goto err_free_cints;
> > +               }
> > +               vec++;
> > +
> > +               /* Enable CQ IRQ */
> > +               otx2_write64(priv, NIX_LF_CINTX_INT(qidx), BIT_ULL(0));
> > +               otx2_write64(priv, NIX_LF_CINTX_ENA_W1S(qidx), BIT_ULL(0));
> > +       }
> > +       priv->flags &= ~OTX2_FLAG_INTF_DOWN;
> > +       return 0;
> > +
> > +err_free_cints:
> > +       otx2_free_cints(priv, qidx);
> > +       otx2_disable_napi(priv);
> > +       return err;
> > +}
> > +
> > +static void rvu_rep_free_cq_rsrc(struct otx2_nic *priv)
> > +{
> > +       struct otx2_cq_poll *cq_poll = NULL;
> > +       struct otx2_qset *qset = &priv->qset;
> > +       int qidx, vec;
> > +
> > +       /* Cleanup CQ NAPI and IRQ */
> > +       vec = priv->hw.nix_msixoff + NIX_LF_CINT_VEC_START;
> > +       for (qidx = 0; qidx < priv->hw.cint_cnt; qidx++) {
> > +               /* Disable interrupt */
> > +               otx2_write64(priv, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0));
> > +
> > +               synchronize_irq(pci_irq_vector(priv->pdev, vec));
> > +
> > +               cq_poll = &qset->napi[qidx];
> > +               napi_synchronize(&cq_poll->napi);
> > +               vec++;
> > +       }
> > +       otx2_free_cints(priv, priv->hw.cint_cnt);
> > +       otx2_disable_napi(priv);
> > +}
> > +
> > +static void rvu_rep_free_netdev(struct otx2_nic *priv)
> > +{
> > +       struct rep_dev *rep;
> > +       int rep_id;
> > +
> > +       for (rep_id = 0; rep_id < priv->rep_cnt; rep_id++) {
> > +               rep = priv->reps[rep_id];
> > +               if (rep && rep->netdev->netdev_ops) {
> > +                       unregister_netdev(rep->netdev);
> > +                       free_netdev(rep->netdev);
> > +               }
> > +       }
> > +       devm_kfree(priv->dev, priv->reps);
> > +}
> > +
> > +void rvu_rep_destroy(struct otx2_nic *priv)
> > +{
> > +       rvu_rep_free_cq_rsrc(priv);
> > +       rvu_rep_free_netdev(priv);
> > +}
> > +
> > +int rvu_rep_create(struct otx2_nic *priv)
> > +{
> > +       int rep_cnt = priv->rep_cnt;
> > +       struct net_device *ndev;
> > +       struct rep_dev *rep;
> > +       int rep_id, err;
> > +       u16 pcifunc;
> > +
> > +       priv->reps = devm_kcalloc(priv->dev, rep_cnt, sizeof(struct rep_dev),
> GFP_KERNEL);
> > +       if (!priv->reps)
> > +               return -ENOMEM;
> > +
> > +       for (rep_id = 0; rep_id < rep_cnt; rep_id++) {
> > +               ndev = alloc_etherdev(sizeof(*rep));
> > +               if (!ndev) {
> > +                       dev_err(priv->dev, "PFVF representor:%d creation failed\n",
> rep_id);
> > +                       err = -ENOMEM;
> > +                       goto exit;
> > +               }
> > +
> > +               rep = netdev_priv(ndev);
> > +               priv->reps[rep_id] = rep;
> > +               rep->mdev = priv;
> > +               rep->netdev = ndev;
> > +               rep->rep_id = rep_id;
> > +
> > +               ndev->min_mtu = OTX2_MIN_MTU;
> > +               ndev->max_mtu = priv->hw.max_mtu;
> > +               pcifunc = priv->rep_pf_map[rep_id];
> > +               rep->pcifunc = pcifunc;
> > +
> > +               snprintf(ndev->name, sizeof(ndev->name), "r%dp%dv%d", rep_id,
> > +                        rvu_get_pf(pcifunc), (pcifunc & RVU_PFVF_FUNC_MASK));
> > +
> > +               eth_hw_addr_random(ndev);
> > +               if (register_netdev(ndev)) {
> > +                       dev_err(priv->dev, "PFVF reprentator registration failed\n");
> > +                       free_netdev(ndev);
> > +                       ndev->netdev_ops = NULL;
> [Kalesh] update "rc" with the return status of register_netdev()
Ack.  Thanks for reviewing. Will submit the v2 with the changes. 
> > +                       goto exit;
> > +               }
> > +       }
> > +       err = rvu_rep_napi_init(priv);
> > +       if (err)
> > +               goto exit;
> > +
> > +       return 0;
> > +exit:
> > +       rvu_rep_free_netdev(priv);
> > +       return err;
> > +}
> > +
> >  static int rvu_rep_rsrc_free(struct otx2_nic *priv)
> >  {
> >         struct otx2_qset *qset = &priv->qset;
> > @@ -162,6 +315,10 @@ static int rvu_rep_probe(struct pci_dev *pdev,
> const struct pci_device_id *id)
> >         if (err)
> >                 goto err_detach_rsrc;
> >
> > +       err = otx2_register_dl(priv);
> > +       if (err)
> > +               goto err_detach_rsrc;
> > +
> >         return 0;
> >
> >  err_detach_rsrc:
> > @@ -183,6 +340,8 @@ static void rvu_rep_remove(struct pci_dev *pdev)
> >  {
> >         struct otx2_nic *priv = pci_get_drvdata(pdev);
> >
> > +       otx2_unregister_dl(priv);
> > +       rvu_rep_destroy(priv);
> >         rvu_rep_rsrc_free(priv);
> >         otx2_detach_resources(&priv->mbox);
> >         if (priv->hw.lmt_info)
> > diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
> b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
> > index 30cce17eb48b..be6c939e5cba 100644
> > --- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
> > +++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.h
> > @@ -29,4 +29,6 @@ static inline bool is_rep_dev(struct pci_dev *pdev)
> >         return pdev->device == PCI_DEVID_RVU_REP;
> >  }
> >
> > +int rvu_rep_create(struct otx2_nic *priv);
> > +void rvu_rep_destroy(struct otx2_nic *priv);
> >  #endif /* REP_H */
> > --
> > 2.25.1
> >
> >
> 
> 
> --
> Regards,
> Kalesh A P

RE: [EXTERNAL] Re: [net-next PATCH 2/9] octeontx2-pf: RVU representor driver

[Geethasowjanya Akula]

> -----Original Message-----
> From: Dan Carpenter <dan.carpenter@linaro.org>
> Sent: Wednesday, April 17, 2024 7:08 PM
> To: oe-kbuild@lists.linux.dev; Geethasowjanya Akula <gakula@marvell.com>;
> netdev@vger.kernel.org; linux-kernel@vger.kernel.org
> Cc: lkp@intel.com; oe-kbuild-all@lists.linux.dev; kuba@kernel.org;
> davem@davemloft.net; pabeni@redhat.com; edumazet@google.com; Sunil
> Kovvuri Goutham <sgoutham@marvell.com>; Geethasowjanya Akula
> <gakula@marvell.com>; Subbaraya Sundeep Bhatta <sbhatta@marvell.com>;
> Hariprasad Kelam <hkelam@marvell.com>
> Subject: [EXTERNAL] Re: [net-next PATCH 2/9] octeontx2-pf: RVU representor
> driver
> 
> Prioritize security for external emails: Confirm sender and content safety
> before clicking links or opening attachments
> 
> ----------------------------------------------------------------------
> Hi Geetha,
> 
> kernel test robot noticed the following build warnings:
Sorry for the noise. Will submit v2. 
> 
> url:    https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__github.com_intel-2Dlab-2Dlkp_linux_commits_Geetha-
> 2Dsowjanya_octeontx2-2Dpf-2DRefactoring-2DRVU-2Ddriver_20240416-
> 2D131052&d=DwIBAg&c=nKjWec2b6R0mOyPaz7xtfQ&r=UiEt_nUeYFctu7JVLX
> VlXDhTmq_EAfooaZEYInfGuEQ&m=pcjq_-
> V9lD5zAfvLDvrlTSM6DYTEg3uJVXYiddlZa89uqDZsmg4dN-
> MbQRGQK6ji&s=ChDNOMytP7EFyLLxwRY3cHm7DMPhPlK3Wv2IEhbgJ6g&e=
> base:   net-next/main
> patch link:    https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__lore.kernel.org_r_20240416050616.6056-2D3-2Dgakula-
> 2540marvell.com&d=DwIBAg&c=nKjWec2b6R0mOyPaz7xtfQ&r=UiEt_nUeYFct
> u7JVLXVlXDhTmq_EAfooaZEYInfGuEQ&m=pcjq_-
> V9lD5zAfvLDvrlTSM6DYTEg3uJVXYiddlZa89uqDZsmg4dN-
> MbQRGQK6ji&s=YSpWxF94IMzRZMCAUDJtHTF24ZOUEQndVX3_OEwQeT4&e=
> patch subject: [net-next PATCH 2/9] octeontx2-pf: RVU representor driver
> config: alpha-randconfig-r081-20240417
> (https://urldefense.proofpoint.com/v2/url?u=https-
> 3A__download.01.org_0day-
> 2Dci_archive_20240417_202404172056.MpOMwcGB-2Dlkp-
> 40intel.com_config&d=DwIBAg&c=nKjWec2b6R0mOyPaz7xtfQ&r=UiEt_nUeYF
> ctu7JVLXVlXDhTmq_EAfooaZEYInfGuEQ&m=pcjq_-
> V9lD5zAfvLDvrlTSM6DYTEg3uJVXYiddlZa89uqDZsmg4dN-
> MbQRGQK6ji&s=QOW0AEuofAe4zzEOmhoLGIMNdsEeECwaFcWF59IbfGs&e=
> )
> compiler: alpha-linux-gcc (GCC) 13.2.0
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
> | Closes:
> | https://urldefense.proofpoint.com/v2/url?u=https-3A__lore.kernel.org_r
> | _202404172056.MpOMwcGB-2Dlkp-
> 40intel.com_&d=DwIBAg&c=nKjWec2b6R0mOyPaz
> | 7xtfQ&r=UiEt_nUeYFctu7JVLXVlXDhTmq_EAfooaZEYInfGuEQ&m=pcjq_-
> V9lD5zAfvL
> | DvrlTSM6DYTEg3uJVXYiddlZa89uqDZsmg4dN-
> MbQRGQK6ji&s=jPDXgsvu9jd0deKZBs1
> | uke91fxvHYp_S6gFl1gnq5Rk&e=
> 
> New smatch warnings:
> drivers/net/ethernet/marvell/octeontx2/nic/rep.c:95 rvu_get_rep_cnt() warn:
> passing zero to 'PTR_ERR'
> drivers/net/ethernet/marvell/octeontx2/nic/rep.c:140 rvu_rep_probe() warn:
> missing unwind goto?
> 
> vim +/PTR_ERR +95 drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> 
> 1e15129a77b419 Geetha sowjanya 2024-04-16   76  static int
> rvu_get_rep_cnt(struct otx2_nic *priv)
> 1e15129a77b419 Geetha sowjanya 2024-04-16   77  {
> 1e15129a77b419 Geetha sowjanya 2024-04-16   78  	struct
> get_rep_cnt_rsp *rsp;
> 1e15129a77b419 Geetha sowjanya 2024-04-16   79  	struct mbox_msghdr
> *msghdr;
> 1e15129a77b419 Geetha sowjanya 2024-04-16   80  	struct msg_req *req;
> 1e15129a77b419 Geetha sowjanya 2024-04-16   81  	int err, rep;
> 1e15129a77b419 Geetha sowjanya 2024-04-16   82
> 1e15129a77b419 Geetha sowjanya 2024-04-16   83  	mutex_lock(&priv-
> >mbox.lock);
> 1e15129a77b419 Geetha sowjanya 2024-04-16   84  	req =
> otx2_mbox_alloc_msg_get_rep_cnt(&priv->mbox);
> 1e15129a77b419 Geetha sowjanya 2024-04-16   85  	if (!req) {
> 1e15129a77b419 Geetha sowjanya 2024-04-16   86
> 	mutex_unlock(&priv->mbox.lock);
> 1e15129a77b419 Geetha sowjanya 2024-04-16   87  		return -
> ENOMEM;
> 1e15129a77b419 Geetha sowjanya 2024-04-16   88  	}
> 1e15129a77b419 Geetha sowjanya 2024-04-16   89  	err =
> otx2_sync_mbox_msg(&priv->mbox);
> 1e15129a77b419 Geetha sowjanya 2024-04-16   90  	if (err)
> 1e15129a77b419 Geetha sowjanya 2024-04-16   91  		goto exit;
> 1e15129a77b419 Geetha sowjanya 2024-04-16   92
> 1e15129a77b419 Geetha sowjanya 2024-04-16   93  	msghdr =
> otx2_mbox_get_rsp(&priv->mbox.mbox, 0, &req->hdr);
> 1e15129a77b419 Geetha sowjanya 2024-04-16   94  	if (IS_ERR(msghdr)) {
> 1e15129a77b419 Geetha sowjanya 2024-04-16  @95  		err =
> PTR_ERR(rsp);
>                                                                               ^^^ s/rsp/msghdr/
> 
> 1e15129a77b419 Geetha sowjanya 2024-04-16   96  		goto exit;
> 1e15129a77b419 Geetha sowjanya 2024-04-16   97  	}
> 1e15129a77b419 Geetha sowjanya 2024-04-16   98
> 1e15129a77b419 Geetha sowjanya 2024-04-16   99  	rsp = (struct
> get_rep_cnt_rsp *)msghdr;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  100  	priv->hw.tx_queues =
> rsp->rep_cnt;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  101  	priv->hw.rx_queues =
> rsp->rep_cnt;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  102  	priv->rep_cnt = rsp-
> >rep_cnt;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  103  	for (rep = 0; rep <
> priv->rep_cnt; rep++)
> 1e15129a77b419 Geetha sowjanya 2024-04-16  104  		priv-
> >rep_pf_map[rep] = rsp->rep_pf_map[rep];
> 1e15129a77b419 Geetha sowjanya 2024-04-16  105
> 1e15129a77b419 Geetha sowjanya 2024-04-16  106  exit:
> 1e15129a77b419 Geetha sowjanya 2024-04-16  107  	mutex_unlock(&priv-
> >mbox.lock);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  108  	return err;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  109  }
> 1e15129a77b419 Geetha sowjanya 2024-04-16  110
> 1e15129a77b419 Geetha sowjanya 2024-04-16  111  static int
> rvu_rep_probe(struct pci_dev *pdev, const struct pci_device_id *id)
> 1e15129a77b419 Geetha sowjanya 2024-04-16  112  {
> 1e15129a77b419 Geetha sowjanya 2024-04-16  113  	struct device *dev =
> &pdev->dev;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  114  	struct otx2_nic *priv;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  115  	struct otx2_hw *hw;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  116  	int err;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  117
> 1e15129a77b419 Geetha sowjanya 2024-04-16  118  	err =
> pcim_enable_device(pdev);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  119  	if (err) {
> 1e15129a77b419 Geetha sowjanya 2024-04-16  120  		dev_err(dev,
> "Failed to enable PCI device\n");
> 1e15129a77b419 Geetha sowjanya 2024-04-16  121  		return err;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  122  	}
> 1e15129a77b419 Geetha sowjanya 2024-04-16  123
> 1e15129a77b419 Geetha sowjanya 2024-04-16  124  	err =
> pci_request_regions(pdev, DRV_NAME);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  125  	if (err) {
> 1e15129a77b419 Geetha sowjanya 2024-04-16  126  		dev_err(dev,
> "PCI request regions failed 0x%x\n", err);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  127  		return err;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  128  	}
> 1e15129a77b419 Geetha sowjanya 2024-04-16  129
> 1e15129a77b419 Geetha sowjanya 2024-04-16  130  	err =
> dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
> 1e15129a77b419 Geetha sowjanya 2024-04-16  131  	if (err) {
> 1e15129a77b419 Geetha sowjanya 2024-04-16  132  		dev_err(dev,
> "DMA mask config failed, abort\n");
> 1e15129a77b419 Geetha sowjanya 2024-04-16  133  		goto
> err_release_regions;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  134  	}
> 1e15129a77b419 Geetha sowjanya 2024-04-16  135
> 1e15129a77b419 Geetha sowjanya 2024-04-16  136
> 	pci_set_master(pdev);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  137
> 1e15129a77b419 Geetha sowjanya 2024-04-16  138  	priv =
> devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  139  	if (!priv)
> 1e15129a77b419 Geetha sowjanya 2024-04-16 @140  		return -
> ENOMEM;
> 
> goto err_release_regions.
> 
> 1e15129a77b419 Geetha sowjanya 2024-04-16  141  	pci_set_drvdata(pdev,
> priv);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  142  	priv->pdev = pdev;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  143  	priv->dev = dev;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  144  	priv->flags |=
> OTX2_FLAG_INTF_DOWN;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  145  	priv->flags |=
> OTX2_FLAG_REP_MODE_ENABLED;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  146
> 1e15129a77b419 Geetha sowjanya 2024-04-16  147  	hw = &priv->hw;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  148  	hw->pdev = pdev;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  149  	hw->max_queues =
> OTX2_MAX_CQ_CNT;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  150  	hw->rbuf_len =
> OTX2_DEFAULT_RBUF_LEN;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  151  	hw->xqe_size = 128;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  152
> 1e15129a77b419 Geetha sowjanya 2024-04-16  153  	err =
> otx2_init_rsrc(pdev, priv);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  154  	if (err)
> 1e15129a77b419 Geetha sowjanya 2024-04-16  155  		goto
> err_release_regions;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  156
> 1e15129a77b419 Geetha sowjanya 2024-04-16  157  	err =
> rvu_get_rep_cnt(priv);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  158  	if (err)
> 1e15129a77b419 Geetha sowjanya 2024-04-16  159  		goto
> err_detach_rsrc;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  160
> 1e15129a77b419 Geetha sowjanya 2024-04-16  161  	err =
> rvu_rep_rsrc_init(priv);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  162  	if (err)
> 1e15129a77b419 Geetha sowjanya 2024-04-16  163  		goto
> err_detach_rsrc;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  164
> 1e15129a77b419 Geetha sowjanya 2024-04-16  165  	return 0;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  166
> 1e15129a77b419 Geetha sowjanya 2024-04-16  167  err_detach_rsrc:
> 1e15129a77b419 Geetha sowjanya 2024-04-16  168  	if (priv->hw.lmt_info)
> 1e15129a77b419 Geetha sowjanya 2024-04-16  169
> 	free_percpu(priv->hw.lmt_info);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  170  	if
> (test_bit(CN10K_LMTST, &priv->hw.cap_flag))
> 1e15129a77b419 Geetha sowjanya 2024-04-16  171
> 	qmem_free(priv->dev, priv->dync_lmt);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  172
> 	otx2_detach_resources(&priv->mbox);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  173
> 	otx2_disable_mbox_intr(priv);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  174
> 	otx2_pfaf_mbox_destroy(priv);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  175
> 	pci_free_irq_vectors(pdev);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  176  err_release_regions:
> 1e15129a77b419 Geetha sowjanya 2024-04-16  177  	pci_set_drvdata(pdev,
> NULL);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  178
> 	pci_release_regions(pdev);
> 1e15129a77b419 Geetha sowjanya 2024-04-16  179  	return err;
> 1e15129a77b419 Geetha sowjanya 2024-04-16  180  }
> 
> --
> 0-DAY CI Kernel Test Service
> https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_intel_lkp-
> 2Dtests_wiki&d=DwIBAg&c=nKjWec2b6R0mOyPaz7xtfQ&r=UiEt_nUeYFctu7JV
> LXVlXDhTmq_EAfooaZEYInfGuEQ&m=pcjq_-
> V9lD5zAfvLDvrlTSM6DYTEg3uJVXYiddlZa89uqDZsmg4dN-
> MbQRGQK6ji&s=beFB4KCroPb-eEJRShM4cz1uR-BfmmzYTAhp7-xEqqc&e=

RE: [EXTERNAL] Re: [net-next PATCH 5/9] octeontx2-af: Add packet path between representor and VF

[Geethasowjanya Akula]

Hi,

> -----Original Message-----
> From: Kalesh Anakkur Purayil <kalesh-anakkur.purayil@broadcom.com>
> Sent: Wednesday, April 17, 2024 9:46 AM
> To: Geethasowjanya Akula <gakula@marvell.com>
> Cc: netdev@vger.kernel.org; linux-kernel@vger.kernel.org; kuba@kernel.org;
> davem@davemloft.net; pabeni@redhat.com; edumazet@google.com; Sunil
> Kovvuri Goutham <sgoutham@marvell.com>; Subbaraya Sundeep Bhatta
> <sbhatta@marvell.com>; Hariprasad Kelam <hkelam@marvell.com>
> Subject: [EXTERNAL] Re: [net-next PATCH 5/9] octeontx2-af: Add packet path
> between representor and VF
> 
> Prioritize security for external emails: Confirm sender and content safety
> before clicking links or opening attachments
> 
> ----------------------------------------------------------------------
> On Wed, Apr 17, 2024 at 9:40 AM Kalesh Anakkur Purayil
> <kalesh-anakkur.purayil@broadcom.com> wrote:
> >
> > On Tue, Apr 16, 2024 at 10:38 AM Geetha sowjanya <gakula@marvell.com>
> wrote:
> > >
> > > This patch installs tcam rules to stree traffic representors
> > > and VF when swicthdev mode is set. To support this a HW loopback
> > > channel is reserved. Through this channel packet are routed
> > > between representor and VFs. "ESW_CFG" mbox is defined to
> > > notify AF for installing rules.
> > >
> > > Signed-off-by: Geetha sowjanya <gakula@marvell.com>
> > > ---
> > >  .../net/ethernet/marvell/octeontx2/af/mbox.h  |   7 +
> > >  .../net/ethernet/marvell/octeontx2/af/rvu.h   |   7 +-
> > >  .../marvell/octeontx2/af/rvu_devlink.c        |   6 +
> > >  .../ethernet/marvell/octeontx2/af/rvu_nix.c   |   7 +-
> > >  .../ethernet/marvell/octeontx2/af/rvu_rep.c   | 241 +++++++++++++++++-
> > >  .../marvell/octeontx2/af/rvu_switch.c         |  18 +-
> > >  .../net/ethernet/marvell/octeontx2/nic/rep.c  |  19 ++
> > >  7 files changed, 297 insertions(+), 8 deletions(-)
> > >
> > > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> > > index c77c02730cf9..3b36da28a8f4 100644
> > > --- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> > > +++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
> > > @@ -144,6 +144,7 @@ M(LMTST_TBL_SETUP,  0x00a, lmtst_tbl_setup,
> lmtst_tbl_setup_req,    \
> > >  M(SET_VF_PERM,         0x00b, set_vf_perm, set_vf_perm, msg_rsp)       \
> > >  M(PTP_GET_CAP,         0x00c, ptp_get_cap, msg_req, ptp_get_cap_rsp)   \
> > >  M(GET_REP_CNT,         0x00d, get_rep_cnt, msg_req, get_rep_cnt_rsp)   \
> > > +M(ESW_CFG,             0x00e, esw_cfg, esw_cfg_req, msg_rsp)   \
> > >  /* CGX mbox IDs (range 0x200 - 0x3FF) */                               \
> > >  M(CGX_START_RXTX,      0x200, cgx_start_rxtx, msg_req, msg_rsp)        \
> > >  M(CGX_STOP_RXTX,       0x201, cgx_stop_rxtx, msg_req, msg_rsp)         \
> > > @@ -1532,6 +1533,12 @@ struct get_rep_cnt_rsp {
> > >         u64 rsvd;
> > >  };
> > >
> > > +struct esw_cfg_req {
> > > +       struct mbox_msghdr hdr;
> > > +       u8 ena;
> > > +       u64 rsvd;
> > > +};
> > > +
> > >  struct flow_msg {
> > >         unsigned char dmac[6];
> > >         unsigned char smac[6];
> > > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> > > index 1d76d52d7a5d..c8572d79a968 100644
> > > --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> > > +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
> > > @@ -596,6 +596,7 @@ struct rvu {
> > >         u16                     rep_pcifunc;
> > >         int                     rep_cnt;
> > >         u16                     *rep2pfvf_map;
> > > +       u8                      rep_mode;
> > >  };
> > >
> > >  static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64
> val)
> > > @@ -1025,7 +1026,7 @@ int rvu_ndc_fix_locked_cacheline(struct rvu
> *rvu, int blkaddr);
> > >  /* RVU Switch */
> > >  void rvu_switch_enable(struct rvu *rvu);
> > >  void rvu_switch_disable(struct rvu *rvu);
> > > -void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc);
> > > +void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc, bool ena);
> > >  void rvu_switch_enable_lbk_link(struct rvu *rvu, u16 pcifunc, bool ena);
> > >
> > >  int rvu_npc_set_parse_mode(struct rvu *rvu, u16 pcifunc, u64 mode, u8
> dir,
> > > @@ -1039,4 +1040,8 @@ int rvu_mcs_flr_handler(struct rvu *rvu, u16
> pcifunc);
> > >  void rvu_mcs_ptp_cfg(struct rvu *rvu, u8 rpm_id, u8 lmac_id, bool ena);
> > >  void rvu_mcs_exit(struct rvu *rvu);
> > >
> > > +/* Representor APIs */
> > > +int rvu_rep_pf_init(struct rvu *rvu);
> > > +int rvu_rep_install_mcam_rules(struct rvu *rvu);
> > > +void rvu_rep_update_rules(struct rvu *rvu, u16 pcifunc, bool ena);
> > >  #endif /* RVU_H */
> > > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
> b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
> > > index 96c04f7d93f8..8a3b7fb61883 100644
> > > --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
> > > +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c
> > > @@ -1464,6 +1464,9 @@ static int rvu_devlink_eswitch_mode_get(struct
> devlink *devlink, u16 *mode)
> > >         struct rvu *rvu = rvu_dl->rvu;
> > >         struct rvu_switch *rswitch;
> > >
> > > +       if (rvu->rep_mode)
> > > +               return -EOPNOTSUPP;
> > > +
> > >         rswitch = &rvu->rswitch;
> > >         *mode = rswitch->mode;
> > >
> > > @@ -1477,6 +1480,9 @@ static int rvu_devlink_eswitch_mode_set(struct
> devlink *devlink, u16 mode,
> > >         struct rvu *rvu = rvu_dl->rvu;
> > >         struct rvu_switch *rswitch;
> > >
> > > +       if (rvu->rep_mode)
> > > +               return -EOPNOTSUPP;
> > > +
> > >         rswitch = &rvu->rswitch;
> > >         switch (mode) {
> > >         case DEVLINK_ESWITCH_MODE_LEGACY:
> > > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> > > index 4ef5bb7b337f..75d5c1bc00e1 100644
> > > --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> > > +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> > > @@ -2738,7 +2738,7 @@ void rvu_nix_tx_tl2_cfg(struct rvu *rvu, int
> blkaddr, u16 pcifunc,
> > >         int schq;
> > >         u64 cfg;
> > >
> > > -       if (!is_pf_cgxmapped(rvu, pf))
> > > +       if (!is_pf_cgxmapped(rvu, pf) && !is_rep_dev(rvu, pcifunc))
> > >                 return;
> > >
> > >         cfg = enable ? (BIT_ULL(12) | RVU_SWITCH_LBK_CHAN) : 0;
> > > @@ -4368,8 +4368,6 @@ int
> rvu_mbox_handler_nix_set_mac_addr(struct rvu *rvu,
> > >         if (test_bit(PF_SET_VF_TRUSTED, &pfvf->flags) && from_vf)
> > >                 ether_addr_copy(pfvf->default_mac, req->mac_addr);
> > >
> > > -       rvu_switch_update_rules(rvu, pcifunc);
> > > -
> > >         return 0;
> > >  }
> > >
> > > @@ -5159,7 +5157,7 @@ int rvu_mbox_handler_nix_lf_start_rx(struct
> rvu *rvu, struct msg_req *req,
> > >         pfvf = rvu_get_pfvf(rvu, pcifunc);
> > >         set_bit(NIXLF_INITIALIZED, &pfvf->flags);
> > >
> > > -       rvu_switch_update_rules(rvu, pcifunc);
> > > +       rvu_switch_update_rules(rvu, pcifunc, true);
> > >
> > >         return rvu_cgx_start_stop_io(rvu, pcifunc, true);
> > >  }
> > > @@ -5187,6 +5185,7 @@ int rvu_mbox_handler_nix_lf_stop_rx(struct rvu
> *rvu, struct msg_req *req,
> > >         if (err)
> > >                 return err;
> > >
> > > +       rvu_switch_update_rules(rvu, pcifunc, false);
> > >         rvu_cgx_tx_enable(rvu, pcifunc, true);
> > >
> > >         return 0;
> > > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> > > index d07cb356d3d6..5c015e8dfbbe 100644
> > > --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> > > +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
> > > @@ -13,6 +13,246 @@
> > >  #include "rvu.h"
> > >  #include "rvu_reg.h"
> > >
> > > +static u16 rvu_rep_get_vlan_id(struct rvu *rvu, u16 pcifunc)
> > > +{
> > > +       int id;
> > > +
> > > +       for (id = 0; id < rvu->rep_cnt; id++)
> > > +               if (rvu->rep2pfvf_map[id] == pcifunc)
> > > +                       return id;
> > > +       return -ENODEV;
> > > +}
> > > +
> > > +static int rvu_rep_tx_vlan_cfg(struct rvu *rvu,  u16 pcifunc,
> > > +                              u16 vlan_tci, int *vidx)
> > > +{
> > > +       struct nix_vtag_config req = {0};
> > > +       struct nix_vtag_config_rsp rsp = {0};
> [Kalesh] RCT order. Also I think {0} is not needed and you can just use {}
Ack.
> > > +       u64 etype = ETH_P_8021Q;
> > > +       int err;
> > > +
> > > +       /* Insert vlan tag */
> > > +       req.hdr.pcifunc = pcifunc;
> > > +       req.vtag_size = VTAGSIZE_T4;
> > > +       req.cfg_type = 0; /* tx vlan cfg */
> > > +       req.tx.cfg_vtag0 = true;
> > > +       req.tx.vtag0 = etype << 48 | ntohs(vlan_tci);
> > > +
> > > +       err = rvu_mbox_handler_nix_vtag_cfg(rvu, &req, &rsp);
> > > +       if (err) {
> > > +               dev_err(rvu->dev, "Tx vlan config failed\n");
> > > +               return err;
> > > +       }
> > > +       *vidx = rsp.vtag0_idx;
> > > +       return 0;
> > > +}
> > > +
> > > +static int rvu_rep_rx_vlan_cfg(struct rvu *rvu, u16 pcifunc)
> > > +{
> > > +       struct nix_vtag_config req = {0};
> > > +       struct nix_vtag_config_rsp rsp;
> > > +
> > > +       /* config strip, capture and size */
> > > +       req.hdr.pcifunc = pcifunc;
> > > +       req.vtag_size = VTAGSIZE_T4;
> > > +       req.cfg_type = 1; /* rx vlan cfg */
> > > +       req.rx.vtag_type = NIX_AF_LFX_RX_VTAG_TYPE0;
> > > +       req.rx.strip_vtag = true;
> > > +       req.rx.capture_vtag = false;
> > > +
> > > +       return rvu_mbox_handler_nix_vtag_cfg(rvu, &req, &rsp);
> > > +}
> > > +
> > > +static int rvu_rep_install_rx_rule(struct rvu *rvu, u16 pcifunc,
> > > +                                  u16 entry, bool rte)
> > > +{
> > > +       struct npc_install_flow_req req = { 0 };
> > > +       struct npc_install_flow_rsp rsp = { 0 };
> > > +       struct rvu_pfvf *pfvf;
> > > +       u16 vlan_tci, rep_id;
> > > +
> > > +       pfvf = rvu_get_pfvf(rvu, pcifunc);
> > > +
> > > +       /* To stree the traffic from Representee to Representor */
> [Kalesh] Typo. did you mean steer?
> > > +       rep_id = (u16)rvu_rep_get_vlan_id(rvu, pcifunc);
> > > +       if (rte) {
> > > +               vlan_tci = rep_id | 0x1ull << 8;
> > > +               req.vf = rvu->rep_pcifunc;
> > > +               req.op = NIX_RX_ACTIONOP_UCAST;
> > > +               req.index = rep_id;
> > > +       } else {
> > > +               vlan_tci = rep_id;
> > > +               req.vf = pcifunc;
> > > +               req.op = NIX_RX_ACTION_DEFAULT;
> > > +       }
> > > +
> > > +       rvu_rep_rx_vlan_cfg(rvu, req.vf);
> > > +       req.entry = entry;
> > > +       req.hdr.pcifunc = 0; /* AF is requester */
> > > +       req.features = BIT_ULL(NPC_OUTER_VID) |
> BIT_ULL(NPC_VLAN_ETYPE_CTAG);
> > > +       req.vtag0_valid = true;
> > > +       req.vtag0_type = NIX_AF_LFX_RX_VTAG_TYPE0;
> > > +       req.packet.vlan_etype = ETH_P_8021Q;
> > > +       req.mask.vlan_etype = ETH_P_8021Q;
> > > +       req.packet.vlan_tci = vlan_tci;
> > > +       req.mask.vlan_tci = 0xffff;
> > > +
> > > +       req.channel = RVU_SWITCH_LBK_CHAN;
> > > +       req.chan_mask = 0xffff;
> > > +       req.intf = pfvf->nix_rx_intf;
> > > +
> > > +       return rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
> > > +}
> > > +
> > > +static int rvu_rep_install_tx_rule(struct rvu *rvu, u16 pcifunc, u16 entry,
> > > +                                  bool rte)
> > > +{
> > > +       struct npc_install_flow_req req = { 0 };
> > > +       struct npc_install_flow_rsp rsp = { 0 };
> > > +       struct rvu_pfvf *pfvf;
> > > +       int vidx, err;
> > > +       u16 vlan_tci;
> > > +       u8 lbkid;
> > > +
> > > +       pfvf = rvu_get_pfvf(rvu, pcifunc);
> > > +       vlan_tci = rvu_rep_get_vlan_id(rvu, pcifunc);
> > > +       if (rte)
> > > +               vlan_tci |= 0x1ull << 8;
> > > +
> > > +       err = rvu_rep_tx_vlan_cfg(rvu, pcifunc, vlan_tci, &vidx);
> > > +       if (err)
> > > +               return err;
> > > +
> > > +       lbkid = pfvf->nix_blkaddr == BLKADDR_NIX0 ? 0 : 1;
> > > +       req.hdr.pcifunc = 0; /* AF is requester */
> > > +       if (rte) {
> > > +               req.vf = pcifunc;
> > > +       } else {
> > > +               req.vf = rvu->rep_pcifunc;
> > > +               req.packet.sq_id = vlan_tci;
> > > +               req.mask.sq_id = 0xffff;
> > > +       }
> > > +
> > > +       req.entry = entry;
> > > +       req.intf = pfvf->nix_tx_intf;
> > > +       req.op = NIX_TX_ACTIONOP_UCAST_CHAN;
> > > +       req.index = (lbkid << 8) | RVU_SWITCH_LBK_CHAN;
> > > +       req.set_cntr = 1;
> > > +       req.vtag0_def = vidx;
> > > +       req.vtag0_op = 1;
> > > +       return rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
> > > +}
> > > +
> > > +int rvu_rep_install_mcam_rules(struct rvu *rvu)
> > > +{
> > > +       struct rvu_switch *rswitch = &rvu->rswitch;
> > > +       u16 start = rswitch->start_entry;
> > > +       struct rvu_hwinfo *hw = rvu->hw;
> > > +       u16 pcifunc, entry = 0;
> > > +       int pf, vf, numvfs;
> > > +       int err, nixlf, i;
> > > +       u8 rep;
> > > +
> > > +       for (pf = 1; pf < hw->total_pfs; pf++) {
> > > +               if (!is_pf_cgxmapped(rvu, pf))
> > > +                       continue;
> > > +
> > > +               pcifunc = pf << RVU_PFVF_PF_SHIFT;
> > > +               rvu_get_nix_blkaddr(rvu, pcifunc);
> > > +               rep = true;
> > > +               for (i = 0; i < 2; i++) {
> > > +                       err = rvu_rep_install_rx_rule(rvu, pcifunc, start + entry, rep);
> > > +                       if (err)
> > > +                               return err;
> > > +                       rswitch->entry2pcifunc[entry++] = pcifunc;
> > > +
> > > +                       err = rvu_rep_install_tx_rule(rvu, pcifunc, start + entry, rep);
> > > +                       if (err)
> > > +                               return err;
> > > +                       rswitch->entry2pcifunc[entry++] = pcifunc;
> > > +                       rep = false;
> > > +               }
> > > +
> > > +               rvu_get_pf_numvfs(rvu, pf, &numvfs, NULL);
> > > +               for (vf = 0; vf < numvfs; vf++) {
> > > +                       pcifunc = pf << RVU_PFVF_PF_SHIFT |
> > > +                                 ((vf + 1) & RVU_PFVF_FUNC_MASK);
> > > +                       rvu_get_nix_blkaddr(rvu, pcifunc);
> > > +
> > > +                       /* Skip installimg rules if nixlf is not attached */
> > > +                       err = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
> > > +                       if (err)
> > > +                               continue;
> > > +                       rep = true;
> > > +                       for (i = 0; i < 2; i++) {
> > > +                               err = rvu_rep_install_rx_rule(rvu, pcifunc, start + entry,
> rep);
> > > +                               if (err)
> > > +                                       return err;
> > > +                               rswitch->entry2pcifunc[entry++] = pcifunc;
> > > +
> > > +                               err = rvu_rep_install_tx_rule(rvu, pcifunc, start + entry,
> rep);
> > > +                               if (err)
> > > +                                       return err;
> > > +                               rswitch->entry2pcifunc[entry++] = pcifunc;
> > > +                               rep = false;
> > > +                       }
> > > +               }
> > > +       }
> > > +       return 0;
> > > +}
> > > +
> > > +void rvu_rep_update_rules(struct rvu *rvu, u16 pcifunc, bool ena)
> > > +{
> > > +       struct rvu_switch *rswitch = &rvu->rswitch;
> > > +       struct npc_mcam *mcam = &rvu->hw->mcam;
> [Kalesh: maintain RCT order
> > > +       u32 max = rswitch->used_entries;
> > > +       int blkaddr;
> > > +       u16 entry;
> > > +
> > > +       if (!rswitch->used_entries)
> > > +               return;
> > > +
> > > +       blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
> > > +
> [Kalesh] No need of a blank line here
> > > +       if (blkaddr < 0)
> > > +               return;
> > > +
> > > +       rvu_switch_enable_lbk_link(rvu, pcifunc, ena);
> > > +       mutex_lock(&mcam->lock);
> > > +       for (entry = 0; entry < max; entry++) {
> > > +               if (rswitch->entry2pcifunc[entry] == pcifunc)
> > > +                       npc_enable_mcam_entry(rvu, mcam, blkaddr, entry, ena);
> > > +       }
> > > +       mutex_unlock(&mcam->lock);
> > > +}
> > > +
> > > +int rvu_rep_pf_init(struct rvu *rvu)
> > > +{
> > > +       u16 pcifunc = rvu->rep_pcifunc;
> > > +       struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
> > > +
> > > +       set_bit(NIXLF_INITIALIZED, &pfvf->flags);
> > > +       rvu_switch_enable_lbk_link(rvu, pcifunc, true);
> > > +       rvu_rep_rx_vlan_cfg(rvu, pcifunc);
> > > +       return 0;
> [Kalesh] This function returns 0 unconditionally, maybe you can change
> it to void?'
Ack.
> > > +}
> > > +
> > > +int rvu_mbox_handler_esw_cfg(struct rvu *rvu, struct esw_cfg_req *req,
> > > +                            struct msg_rsp *rsp)
> > > +{
> > > +       if (req->hdr.pcifunc != rvu->rep_pcifunc)
> > > +               return 0;
> > > +
> > > +       rvu->rep_mode = req->ena;
> > > +
> > > +       if (req->ena)
> > > +               rvu_switch_enable(rvu);
> > > +       else
> > > +               rvu_switch_disable(rvu);
> > > +
> > > +       return 0;
> [Kalesh] This function returns 0 unconditionally, maybe you can change
> it to void?
> > > +}
> > > +
> > >  int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu, struct msg_req *req,
> > >                                  struct get_rep_cnt_rsp *rsp)
> > >  {
> > > @@ -45,4 +285,3 @@ int rvu_mbox_handler_get_rep_cnt(struct rvu *rvu,
> struct msg_req *req,
> > >         }
> > >         return 0;
> > >  }
> > > -
> > > diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
> b/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
> > > index ceb81eebf65e..268efb7c1c15 100644
> > > --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
> > > +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_switch.c
> > > @@ -166,6 +166,8 @@ void rvu_switch_enable(struct rvu *rvu)
> > >
> > >         alloc_req.contig = true;
> > >         alloc_req.count = rvu->cgx_mapped_pfs + rvu->cgx_mapped_vfs;
> > > +       if (rvu->rep_mode)
> > > +               alloc_req.count = alloc_req.count * 4;
> > >         ret = rvu_mbox_handler_npc_mcam_alloc_entry(rvu, &alloc_req,
> > >                                                     &alloc_rsp);
> > >         if (ret) {
> > > @@ -189,7 +191,12 @@ void rvu_switch_enable(struct rvu *rvu)
> > >         rswitch->used_entries = alloc_rsp.count;
> > >         rswitch->start_entry = alloc_rsp.entry;
> > >
> > > -       ret = rvu_switch_install_rules(rvu);
> > > +       if (rvu->rep_mode) {
> > > +               rvu_rep_pf_init(rvu);
> > > +               ret = rvu_rep_install_mcam_rules(rvu);
> > > +       } else {
> > > +               ret = rvu_switch_install_rules(rvu);
> > > +       }
> > >         if (ret)
> > >                 goto uninstall_rules;
> > >
> > > @@ -222,6 +229,9 @@ void rvu_switch_disable(struct rvu *rvu)
> > >         if (!rswitch->used_entries)
> > >                 return;
> > >
> > > +       if (rvu->rep_mode)
> > > +               goto free_ents;
> > > +
> > >         for (pf = 1; pf < hw->total_pfs; pf++) {
> > >                 if (!is_pf_cgxmapped(rvu, pf))
> > >                         continue;
> > > @@ -249,6 +259,7 @@ void rvu_switch_disable(struct rvu *rvu)
> > >                 }
> > >         }
> > >
> > > +free_ents:
> > >         uninstall_req.start = rswitch->start_entry;
> > >         uninstall_req.end =  rswitch->start_entry + rswitch->used_entries - 1;
> > >         free_req.all = 1;
> > > @@ -258,12 +269,15 @@ void rvu_switch_disable(struct rvu *rvu)
> > >         kfree(rswitch->entry2pcifunc);
> > >  }
> > >
> > > -void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc)
> > > +void rvu_switch_update_rules(struct rvu *rvu, u16 pcifunc, bool ena)
> > >  {
> > >         struct rvu_switch *rswitch = &rvu->rswitch;
> > >         u32 max = rswitch->used_entries;
> > >         u16 entry;
> > >
> > > +       if (rvu->rep_mode)
> > > +               return rvu_rep_update_rules(rvu, pcifunc, ena);
> > > +
> > >         if (!rswitch->used_entries)
> > >                 return;
> > >
> > > diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> > > index 187b00156bcd..1329617f8d6f 100644
> > > --- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> > > +++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
> > > @@ -28,6 +28,22 @@ MODULE_DESCRIPTION(DRV_STRING);
> > >  MODULE_LICENSE("GPL");
> > >  MODULE_DEVICE_TABLE(pci, rvu_rep_id_table);
> > >
> > > +static int rvu_eswitch_config(struct otx2_nic *priv, u8 ena)
> > > +{
> > > +       struct esw_cfg_req *req;
> > > +
> > > +       mutex_lock(&priv->mbox.lock);
> > > +       req = otx2_mbox_alloc_msg_esw_cfg(&priv->mbox);
> > > +       if (!req) {
> > > +               mutex_unlock(&priv->mbox.lock);
> > > +               return -ENOMEM;
> > > +       }
> > > +       req->ena = ena;
> > > +       otx2_sync_mbox_msg(&priv->mbox);
> > > +       mutex_unlock(&priv->mbox.lock);
> > > +       return 0;
> > > +}
> > > +
> > >  static netdev_tx_t rvu_rep_xmit(struct sk_buff *skb, struct net_device
> *dev)
> > >  {
> > >         struct rep_dev *rep = netdev_priv(dev);
> > > @@ -170,6 +186,8 @@ static void rvu_rep_free_netdev(struct otx2_nic
> *priv)
> > >
> > >  void rvu_rep_destroy(struct otx2_nic *priv)
> > >  {
> > > +       /* Remove mcam rules */
> > > +       rvu_eswitch_config(priv, false);
> > >         rvu_rep_free_cq_rsrc(priv);
> > >         rvu_rep_free_netdev(priv);
> > >  }
> > > @@ -221,6 +239,7 @@ int rvu_rep_create(struct otx2_nic *priv)
> > >         if (err)
> > >                 goto exit;
> > >
> > > +       rvu_eswitch_config(priv, true);
> > >         return 0;
> > >  exit:
> > >         rvu_rep_free_netdev(priv);
> > > --
> > > 2.25.1
> > >
> > >
> >
> >
> > --
> > Regards,
> > Kalesh A P
> 
> 
> 
> --
> Regards,
> Kalesh A P

Thanks for the feedback. Will submit v2 addressing all the issues.

Re: [net-next PATCH 3/9] octeontx2-pf: Create representor netdev

[Dan Carpenter]

Hi Geetha,

kernel test robot noticed the following build warnings:

url:    https://github.com/intel-lab-lkp/linux/commits/Geetha-sowjanya/octeontx2-pf-Refactoring-RVU-driver/20240416-131052
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240416050616.6056-4-gakula%40marvell.com
patch subject: [net-next PATCH 3/9] octeontx2-pf: Create representor netdev
config: alpha-randconfig-r081-20240417 (https://download.01.org/0day-ci/archive/20240417/202404172208.4REfSKKS-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.2.0

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
| Closes: https://lore.kernel.org/r/202404172208.4REfSKKS-lkp@intel.com/

New smatch warnings:
drivers/net/ethernet/marvell/octeontx2/nic/rep.c:170 rvu_rep_create() error: dereferencing freed memory 'ndev'

vim +/ndev +170 drivers/net/ethernet/marvell/octeontx2/nic/rep.c

f9a5b510759eeb Geetha sowjanya 2024-04-16  131  
f9a5b510759eeb Geetha sowjanya 2024-04-16  132  int rvu_rep_create(struct otx2_nic *priv)
f9a5b510759eeb Geetha sowjanya 2024-04-16  133  {
f9a5b510759eeb Geetha sowjanya 2024-04-16  134  	int rep_cnt = priv->rep_cnt;
f9a5b510759eeb Geetha sowjanya 2024-04-16  135  	struct net_device *ndev;
f9a5b510759eeb Geetha sowjanya 2024-04-16  136  	struct rep_dev *rep;
f9a5b510759eeb Geetha sowjanya 2024-04-16  137  	int rep_id, err;
f9a5b510759eeb Geetha sowjanya 2024-04-16  138  	u16 pcifunc;
f9a5b510759eeb Geetha sowjanya 2024-04-16  139  
f9a5b510759eeb Geetha sowjanya 2024-04-16  140  	priv->reps = devm_kcalloc(priv->dev, rep_cnt, sizeof(struct rep_dev), GFP_KERNEL);
f9a5b510759eeb Geetha sowjanya 2024-04-16  141  	if (!priv->reps)
f9a5b510759eeb Geetha sowjanya 2024-04-16  142  		return -ENOMEM;
f9a5b510759eeb Geetha sowjanya 2024-04-16  143  
f9a5b510759eeb Geetha sowjanya 2024-04-16  144  	for (rep_id = 0; rep_id < rep_cnt; rep_id++) {
f9a5b510759eeb Geetha sowjanya 2024-04-16  145  		ndev = alloc_etherdev(sizeof(*rep));
f9a5b510759eeb Geetha sowjanya 2024-04-16  146  		if (!ndev) {
f9a5b510759eeb Geetha sowjanya 2024-04-16  147  			dev_err(priv->dev, "PFVF representor:%d creation failed\n", rep_id);
f9a5b510759eeb Geetha sowjanya 2024-04-16  148  			err = -ENOMEM;
f9a5b510759eeb Geetha sowjanya 2024-04-16  149  			goto exit;
f9a5b510759eeb Geetha sowjanya 2024-04-16  150  		}
f9a5b510759eeb Geetha sowjanya 2024-04-16  151  
f9a5b510759eeb Geetha sowjanya 2024-04-16  152  		rep = netdev_priv(ndev);
f9a5b510759eeb Geetha sowjanya 2024-04-16  153  		priv->reps[rep_id] = rep;
f9a5b510759eeb Geetha sowjanya 2024-04-16  154  		rep->mdev = priv;
f9a5b510759eeb Geetha sowjanya 2024-04-16  155  		rep->netdev = ndev;
f9a5b510759eeb Geetha sowjanya 2024-04-16  156  		rep->rep_id = rep_id;
f9a5b510759eeb Geetha sowjanya 2024-04-16  157  
f9a5b510759eeb Geetha sowjanya 2024-04-16  158  		ndev->min_mtu = OTX2_MIN_MTU;
f9a5b510759eeb Geetha sowjanya 2024-04-16  159  		ndev->max_mtu = priv->hw.max_mtu;
f9a5b510759eeb Geetha sowjanya 2024-04-16  160  		pcifunc = priv->rep_pf_map[rep_id];
f9a5b510759eeb Geetha sowjanya 2024-04-16  161  		rep->pcifunc = pcifunc;
f9a5b510759eeb Geetha sowjanya 2024-04-16  162  
f9a5b510759eeb Geetha sowjanya 2024-04-16  163  		snprintf(ndev->name, sizeof(ndev->name), "r%dp%dv%d", rep_id,
f9a5b510759eeb Geetha sowjanya 2024-04-16  164  			 rvu_get_pf(pcifunc), (pcifunc & RVU_PFVF_FUNC_MASK));
f9a5b510759eeb Geetha sowjanya 2024-04-16  165  
f9a5b510759eeb Geetha sowjanya 2024-04-16  166  		eth_hw_addr_random(ndev);
f9a5b510759eeb Geetha sowjanya 2024-04-16  167  		if (register_netdev(ndev)) {

err = register_netdev(ndev);
if (err) {

f9a5b510759eeb Geetha sowjanya 2024-04-16  168  			dev_err(priv->dev, "PFVF reprentator registration failed\n");
f9a5b510759eeb Geetha sowjanya 2024-04-16  169  			free_netdev(ndev);
                                                                                    ^^^^
freed

f9a5b510759eeb Geetha sowjanya 2024-04-16 @170  			ndev->netdev_ops = NULL;
                                                                        ^^^^^^^^^^^^^^^^^^^^^^^
Use after free

f9a5b510759eeb Geetha sowjanya 2024-04-16  171  			goto exit;
f9a5b510759eeb Geetha sowjanya 2024-04-16  172  		}
f9a5b510759eeb Geetha sowjanya 2024-04-16  173  	}
f9a5b510759eeb Geetha sowjanya 2024-04-16  174  	err = rvu_rep_napi_init(priv);
f9a5b510759eeb Geetha sowjanya 2024-04-16  175  	if (err)
f9a5b510759eeb Geetha sowjanya 2024-04-16  176  		goto exit;
f9a5b510759eeb Geetha sowjanya 2024-04-16  177  
f9a5b510759eeb Geetha sowjanya 2024-04-16  178  	return 0;
f9a5b510759eeb Geetha sowjanya 2024-04-16  179  exit:
f9a5b510759eeb Geetha sowjanya 2024-04-16  180  	rvu_rep_free_netdev(priv);

rvu_rep_free_netdev() also calls free_netdev() so it's a double free.  I
would normally write this as:

exit:
	while (--rep_id >= 0) {
		unregister_netdev(priv->reps[rep_id]);
		free_netdev(priv->reps[rep_id]);
	}

	return err;

When you write it that way then rvu_rep_free_netdev() can be made easier
as well:

static void rvu_rep_free_netdev(struct otx2_nic *priv)
{
	int rep_id;

	for (rep_id = 0; rep_id < priv->rep_cnt; rep_id++) {
		unregister_netdev(priv->reps[rep_id]);
		free_netdev(priv->reps[rep_id]);
	}
}

There should be no need to call devm_kfree(priv->dev, priv->reps);.

f9a5b510759eeb Geetha sowjanya 2024-04-16 @181  	return err;
f9a5b510759eeb Geetha sowjanya 2024-04-16  182  }

-- 
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https://github.com/intel/lkp-tests/wiki

Re: [net-next PATCH 3/9] octeontx2-pf: Create representor netdev

[Dan Carpenter]

On Wed, Apr 17, 2024 at 06:24:13PM +0300, Dan Carpenter wrote:
> f9a5b510759eeb Geetha sowjanya 2024-04-16  132  int rvu_rep_create(struct otx2_nic *priv)
> f9a5b510759eeb Geetha sowjanya 2024-04-16  133  {
> f9a5b510759eeb Geetha sowjanya 2024-04-16  134  	int rep_cnt = priv->rep_cnt;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  135  	struct net_device *ndev;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  136  	struct rep_dev *rep;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  137  	int rep_id, err;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  138  	u16 pcifunc;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  139  
> f9a5b510759eeb Geetha sowjanya 2024-04-16  140  	priv->reps = devm_kcalloc(priv->dev, rep_cnt, sizeof(struct rep_dev), GFP_KERNEL);
> f9a5b510759eeb Geetha sowjanya 2024-04-16  141  	if (!priv->reps)
> f9a5b510759eeb Geetha sowjanya 2024-04-16  142  		return -ENOMEM;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  143  
> f9a5b510759eeb Geetha sowjanya 2024-04-16  144  	for (rep_id = 0; rep_id < rep_cnt; rep_id++) {
> f9a5b510759eeb Geetha sowjanya 2024-04-16  145  		ndev = alloc_etherdev(sizeof(*rep));
> f9a5b510759eeb Geetha sowjanya 2024-04-16  146  		if (!ndev) {
> f9a5b510759eeb Geetha sowjanya 2024-04-16  147  			dev_err(priv->dev, "PFVF representor:%d creation failed\n", rep_id);
> f9a5b510759eeb Geetha sowjanya 2024-04-16  148  			err = -ENOMEM;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  149  			goto exit;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  150  		}
> f9a5b510759eeb Geetha sowjanya 2024-04-16  151  
> f9a5b510759eeb Geetha sowjanya 2024-04-16  152  		rep = netdev_priv(ndev);
> f9a5b510759eeb Geetha sowjanya 2024-04-16  153  		priv->reps[rep_id] = rep;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  154  		rep->mdev = priv;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  155  		rep->netdev = ndev;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  156  		rep->rep_id = rep_id;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  157  
> f9a5b510759eeb Geetha sowjanya 2024-04-16  158  		ndev->min_mtu = OTX2_MIN_MTU;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  159  		ndev->max_mtu = priv->hw.max_mtu;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  160  		pcifunc = priv->rep_pf_map[rep_id];
> f9a5b510759eeb Geetha sowjanya 2024-04-16  161  		rep->pcifunc = pcifunc;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  162  
> f9a5b510759eeb Geetha sowjanya 2024-04-16  163  		snprintf(ndev->name, sizeof(ndev->name), "r%dp%dv%d", rep_id,
> f9a5b510759eeb Geetha sowjanya 2024-04-16  164  			 rvu_get_pf(pcifunc), (pcifunc & RVU_PFVF_FUNC_MASK));
> f9a5b510759eeb Geetha sowjanya 2024-04-16  165  
> f9a5b510759eeb Geetha sowjanya 2024-04-16  166  		eth_hw_addr_random(ndev);
> f9a5b510759eeb Geetha sowjanya 2024-04-16  167  		if (register_netdev(ndev)) {
> 
> err = register_netdev(ndev);
> if (err) {
> 
> f9a5b510759eeb Geetha sowjanya 2024-04-16  168  			dev_err(priv->dev, "PFVF reprentator registration failed\n");
> f9a5b510759eeb Geetha sowjanya 2024-04-16  169  			free_netdev(ndev);
>                                                                                     ^^^^
> freed
> 
> f9a5b510759eeb Geetha sowjanya 2024-04-16 @170  			ndev->netdev_ops = NULL;
>                                                                         ^^^^^^^^^^^^^^^^^^^^^^^
> Use after free
> 
> f9a5b510759eeb Geetha sowjanya 2024-04-16  171  			goto exit;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  172  		}
> f9a5b510759eeb Geetha sowjanya 2024-04-16  173  	}
> f9a5b510759eeb Geetha sowjanya 2024-04-16  174  	err = rvu_rep_napi_init(priv);
> f9a5b510759eeb Geetha sowjanya 2024-04-16  175  	if (err)
> f9a5b510759eeb Geetha sowjanya 2024-04-16  176  		goto exit;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  177  
> f9a5b510759eeb Geetha sowjanya 2024-04-16  178  	return 0;
> f9a5b510759eeb Geetha sowjanya 2024-04-16  179  exit:
> f9a5b510759eeb Geetha sowjanya 2024-04-16  180  	rvu_rep_free_netdev(priv);
> 
> rvu_rep_free_netdev() also calls free_netdev() so it's a double free.

Actually the rep->netdev->netdev_ops check in rvu_rep_free_netdev() was
supposed to prevent the double free.  But since rep->netdev is already
freed, then it's another use after free.  You could use a different flag
instead of rep->netdev->netdev_ops to mean "don't free this".  But
really, it's just better to write it how I have suggested.

My patch adds some duplicate code but when you remove the conditions in
rvu_rep_free_netdev() and the "ndev->netdev_ops = NULL" assignment, then
overall it's fewer lines of code this way.

https://staticthinking.wordpress.com/2022/04/28/free-the-last-thing-style/

regards,
dan carpenter

Re: [net-next PATCH 2/9] octeontx2-pf: RVU representor driver

[kernel test robot]

Hi Geetha,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Geetha-sowjanya/octeontx2-pf-Refactoring-RVU-driver/20240416-131052
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240416050616.6056-3-gakula%40marvell.com
patch subject: [net-next PATCH 2/9] octeontx2-pf: RVU representor driver
config: loongarch-randconfig-r064-20240417 (https://download.01.org/0day-ci/archive/20240418/202404180051.sgxiT7pZ-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240418/202404180051.sgxiT7pZ-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404180051.sgxiT7pZ-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c: In function 'otx2_tx_napi_handler':
>> drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c:470:28: error: 'struct otx2_nic' has no member named 'reps'
     470 |                 ndev = pfvf->reps[qidx]->netdev;
         |                            ^~


vim +470 drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c

   449	
   450	static int otx2_tx_napi_handler(struct otx2_nic *pfvf,
   451					struct otx2_cq_queue *cq, int budget)
   452	{
   453		int tx_pkts = 0, tx_bytes = 0, qidx;
   454		struct otx2_snd_queue *sq;
   455		struct nix_cqe_tx_s *cqe;
   456		struct net_device *ndev;
   457		int processed_cqe = 0;
   458	
   459		if (cq->pend_cqe >= budget)
   460			goto process_cqe;
   461	
   462		if (otx2_nix_cq_op_status(pfvf, cq) || !cq->pend_cqe)
   463			return 0;
   464	
   465	process_cqe:
   466		qidx = cq->cq_idx - pfvf->hw.rx_queues;
   467		sq = &pfvf->qset.sq[qidx];
   468	
   469		if (pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)
 > 470			ndev = pfvf->reps[qidx]->netdev;
   471		else
   472			ndev = pfvf->netdev;
   473	
   474		while (likely(processed_cqe < budget) && cq->pend_cqe) {
   475			cqe = (struct nix_cqe_tx_s *)otx2_get_next_cqe(cq);
   476			if (unlikely(!cqe)) {
   477				if (!processed_cqe)
   478					return 0;
   479				break;
   480			}
   481	
   482			qidx = cq->cq_idx - pfvf->hw.rx_queues;
   483	
   484			if (cq->cq_type == CQ_XDP)
   485				otx2_xdp_snd_pkt_handler(pfvf, sq, cqe);
   486			else
   487				otx2_snd_pkt_handler(pfvf, ndev, cq, &pfvf->qset.sq[qidx],
   488						     cqe, budget, &tx_pkts, &tx_bytes);
   489	
   490			cqe->hdr.cqe_type = NIX_XQE_TYPE_INVALID;
   491			processed_cqe++;
   492			cq->pend_cqe--;
   493	
   494			sq->cons_head++;
   495			sq->cons_head &= (sq->sqe_cnt - 1);
   496		}
   497	
   498		/* Free CQEs to HW */
   499		otx2_write64(pfvf, NIX_LF_CQ_OP_DOOR,
   500			     ((u64)cq->cq_idx << 32) | processed_cqe);
   501	
   502		if (likely(tx_pkts)) {
   503			struct netdev_queue *txq;
   504	
   505			qidx = cq->cq_idx - pfvf->hw.rx_queues;
   506	
   507			if (qidx >= pfvf->hw.tx_queues)
   508				qidx -= pfvf->hw.xdp_queues;
   509	
   510			if (pfvf->flags & OTX2_FLAG_REP_MODE_ENABLED)
   511				qidx = 0;
   512			txq = netdev_get_tx_queue(pfvf->netdev, qidx);
   513			netdev_tx_completed_queue(txq, tx_pkts, tx_bytes);
   514			/* Check if queue was stopped earlier due to ring full */
   515			smp_mb();
   516			if (netif_tx_queue_stopped(txq) &&
   517			    netif_carrier_ok(ndev))
   518				netif_tx_wake_queue(txq);
   519		}
   520		return 0;
   521	}
   522	

-- 
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Re: [net-next PATCH 5/9] octeontx2-af: Add packet path between representor and VF

[Dan Carpenter]

Hi Geetha,

kernel test robot noticed the following build warnings:

url:    https://github.com/intel-lab-lkp/linux/commits/Geetha-sowjanya/octeontx2-pf-Refactoring-RVU-driver/20240416-131052
base:   net-next/main
patch link:    https://lore.kernel.org/r/20240416050616.6056-6-gakula%40marvell.com
patch subject: [net-next PATCH 5/9] octeontx2-af: Add packet path between representor and VF
config: alpha-randconfig-r081-20240417 (https://download.01.org/0day-ci/archive/20240417/202404172319.ys4PQfP0-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.2.0

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
| Closes: https://lore.kernel.org/r/202404172319.ys4PQfP0-lkp@intel.com/

smatch warnings:
drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c:23 rvu_rep_get_vlan_id() warn: signedness bug returning '(-19)'

vim +23 drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c

5c25d7a685d906 Geetha sowjanya 2024-04-16  16  static u16 rvu_rep_get_vlan_id(struct rvu *rvu, u16 pcifunc)
                                                      ^^^
u16 type

5c25d7a685d906 Geetha sowjanya 2024-04-16  17  {
5c25d7a685d906 Geetha sowjanya 2024-04-16  18  	int id;
5c25d7a685d906 Geetha sowjanya 2024-04-16  19  
5c25d7a685d906 Geetha sowjanya 2024-04-16  20  	for (id = 0; id < rvu->rep_cnt; id++)
5c25d7a685d906 Geetha sowjanya 2024-04-16  21  		if (rvu->rep2pfvf_map[id] == pcifunc)
5c25d7a685d906 Geetha sowjanya 2024-04-16  22  			return id;
5c25d7a685d906 Geetha sowjanya 2024-04-16 @23  	return -ENODEV;
                                                ^^^^^^^^^^^^^^

5c25d7a685d906 Geetha sowjanya 2024-04-16  24  }

-- 
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