[net-next 00/15][pull request] 100GbE Intel Wired LAN Driver Updates 2020-05-27

[net-next 00/15][pull request] 100GbE Intel Wired LAN Driver Updates 2020-05-27

[Jeff Kirsher]

This series contains updates to the ice driver only.

Jesse fixes a number of issues, starting with fixing the remaining
signed versus unsigned comparison issues.  Cleaned up an unused code
define.  Fixed the implementation of the manage MAC write command, to
simplify it by using a simple array to represent the MAC address when
writing it.

Paul fixes the setting of the VF default LAN address, by removing a
check that assumed that the address had been deleted and zeroed.

Surabhi prevents a memory leak on filter management initialization
failures and during queue initialization and buffer allocation failures.

Brett adds additional receive error counters that are reported by
ethtool.  Fixed the enabling and disabling of VLAN stripping when the
PVID has been set.

Evan fixes a race condition between the firmware and software, which can
occur between the admin queue setup and the first command sent.

Marta fixes the driver when XDP transmit rings are destroyed, also make
sure the XDP transmit queues are also destroyed.  Update the statistics
when XDP transmit programs are loaded and packets are sent.  Changed the
number of XDP transmit queues to match the number of receive queues,
instead of matching the number of transmit queues.

Bruce avoids undefined behavior by not writing the 8-bit element
init_q_state with the associated internal-to-hardware field which is
122-bits.

Anirudh (Ani) refactors the receive checksum checks.

Krzysztof notifies the user if the fill queue is not long enough to
prepare all buffers before packet processing starts and allocates the
buffers during the NAPI poll.

The following are changes since commit 50ce4c099bebf56be86c9448f7f4bcd34f33663c:
  sctp: fix typo sctp_ulpevent_nofity_peer_addr_change
and are available in the git repository at:
  git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue 100GbE

Anirudh Venkataramanan (1):
  ice: Refactor Rx checksum checks

Brett Creeley (2):
  ice: Add more Rx errors to netdev's rx_error counter
  ice: Don't allow VLAN stripping change when pvid set

Bruce Allan (1):
  ice: avoid undefined behavior

Evan Swanson (1):
  ice: Handle critical FW error during admin queue initialization

Jesse Brandeburg (3):
  ice: fix signed vs unsigned comparisons
  ice: remove unused macro
  ice: fix MAC write command

Krzysztof Kazimierczak (1):
  ice: Check UMEM FQ size when allocating bufs

Marta Plantykow (3):
  ice: Change number of XDP TxQ to 0 when destroying rings
  ice: Add XDP Tx to VSI ring stats
  ice: Change number of XDP Tx queues to match number of Rx queues

Paul Greenwalt (1):
  ice: set VF default LAN address

Surabhi Boob (2):
  ice: Fix memory leak
  ice: Fix for memory leaks and modify ICE_FREE_CQ_BUFS

 .../net/ethernet/intel/ice/ice_adminq_cmd.h   |  10 +-
 drivers/net/ethernet/intel/ice/ice_base.c     |  39 ++--
 drivers/net/ethernet/intel/ice/ice_common.c   |  25 ++-
 drivers/net/ethernet/intel/ice/ice_common.h   |   3 +-
 drivers/net/ethernet/intel/ice/ice_controlq.c | 175 ++++++++++--------
 drivers/net/ethernet/intel/ice/ice_controlq.h |   3 +
 drivers/net/ethernet/intel/ice/ice_dcb_nl.c   |   2 -
 .../net/ethernet/intel/ice/ice_hw_autogen.h   |   2 +
 .../net/ethernet/intel/ice/ice_lan_tx_rx.h    |   2 +-
 drivers/net/ethernet/intel/ice/ice_lib.c      |   8 +-
 drivers/net/ethernet/intel/ice/ice_main.c     |  65 +++++--
 drivers/net/ethernet/intel/ice/ice_status.h   |   1 +
 drivers/net/ethernet/intel/ice/ice_txrx.h     |   7 +-
 drivers/net/ethernet/intel/ice/ice_txrx_lib.c |  27 ++-
 .../net/ethernet/intel/ice/ice_virtchnl_pf.c  |   8 +-
 15 files changed, 234 insertions(+), 143 deletions(-)

-- 
2.26.2

[net-next 01/15] ice: fix signed vs unsigned comparisons

[Jeff Kirsher]

From: Jesse Brandeburg <jesse.brandeburg@intel.com>

Fix the remaining signed vs unsigned issues, which appear
when compiling with -Werror=sign-compare.

Many of these are because there is an external interface that is passing
an int to us (which we can't change) but that we (rightfully) store
and compare against as an unsigned in our data structures.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_base.c | 4 ++--
 drivers/net/ethernet/intel/ice/ice_main.c | 8 ++++----
 drivers/net/ethernet/intel/ice/ice_txrx.h | 7 ++++---
 3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c
index 94d833b4e745..9452c0eb70b0 100644
--- a/drivers/net/ethernet/intel/ice/ice_base.c
+++ b/drivers/net/ethernet/intel/ice/ice_base.c
@@ -13,7 +13,7 @@
  */
 static int __ice_vsi_get_qs_contig(struct ice_qs_cfg *qs_cfg)
 {
-	int offset, i;
+	unsigned int offset, i;
 
 	mutex_lock(qs_cfg->qs_mutex);
 	offset = bitmap_find_next_zero_area(qs_cfg->pf_map, qs_cfg->pf_map_size,
@@ -39,7 +39,7 @@ static int __ice_vsi_get_qs_contig(struct ice_qs_cfg *qs_cfg)
  */
 static int __ice_vsi_get_qs_sc(struct ice_qs_cfg *qs_cfg)
 {
-	int i, index = 0;
+	unsigned int i, index = 0;
 
 	mutex_lock(qs_cfg->qs_mutex);
 	for (i = 0; i < qs_cfg->q_count; i++) {
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 1c255b27244c..c2da3e1a2e17 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -5035,7 +5035,7 @@ static int ice_change_mtu(struct net_device *netdev, int new_mtu)
 	struct ice_pf *pf = vsi->back;
 	u8 count = 0;
 
-	if (new_mtu == netdev->mtu) {
+	if (new_mtu == (int)netdev->mtu) {
 		netdev_warn(netdev, "MTU is already %u\n", netdev->mtu);
 		return 0;
 	}
@@ -5050,11 +5050,11 @@ static int ice_change_mtu(struct net_device *netdev, int new_mtu)
 		}
 	}
 
-	if (new_mtu < netdev->min_mtu) {
+	if (new_mtu < (int)netdev->min_mtu) {
 		netdev_err(netdev, "new MTU invalid. min_mtu is %d\n",
 			   netdev->min_mtu);
 		return -EINVAL;
-	} else if (new_mtu > netdev->max_mtu) {
+	} else if (new_mtu > (int)netdev->max_mtu) {
 		netdev_err(netdev, "new MTU invalid. max_mtu is %d\n",
 			   netdev->min_mtu);
 		return -EINVAL;
@@ -5075,7 +5075,7 @@ static int ice_change_mtu(struct net_device *netdev, int new_mtu)
 		return -EBUSY;
 	}
 
-	netdev->mtu = new_mtu;
+	netdev->mtu = (unsigned int)new_mtu;
 
 	/* if VSI is up, bring it down and then back up */
 	if (!test_and_set_bit(__ICE_DOWN, vsi->state)) {
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.h b/drivers/net/ethernet/intel/ice/ice_txrx.h
index cf21b4fe928a..e70c4619edc3 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.h
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.h
@@ -38,7 +38,8 @@
  */
 #if (PAGE_SIZE < 8192)
 #define ICE_2K_TOO_SMALL_WITH_PADDING \
-((NET_SKB_PAD + ICE_RXBUF_1536) > SKB_WITH_OVERHEAD(ICE_RXBUF_2048))
+	((unsigned int)(NET_SKB_PAD + ICE_RXBUF_1536) > \
+			SKB_WITH_OVERHEAD(ICE_RXBUF_2048))
 
 /**
  * ice_compute_pad - compute the padding
@@ -107,8 +108,8 @@ static inline int ice_skb_pad(void)
 #define DESC_NEEDED (MAX_SKB_FRAGS + ICE_DESCS_FOR_CTX_DESC + \
 		     ICE_DESCS_PER_CACHE_LINE + ICE_DESCS_FOR_SKB_DATA_PTR)
 #define ICE_DESC_UNUSED(R)	\
-	((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
-	(R)->next_to_clean - (R)->next_to_use - 1)
+	(u16)((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
+	      (R)->next_to_clean - (R)->next_to_use - 1)
 
 #define ICE_TX_FLAGS_TSO	BIT(0)
 #define ICE_TX_FLAGS_HW_VLAN	BIT(1)
-- 
2.26.2

[net-next 02/15] ice: remove unused macro

[Jeff Kirsher]

From: Jesse Brandeburg <jesse.brandeburg@intel.com>

The driver had an unused define that can be removed.  Found by
compiler -Werror=unused-macros check.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_dcb_nl.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_nl.c b/drivers/net/ethernet/intel/ice/ice_dcb_nl.c
index 93cf70d06fe5..87f91b750d59 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb_nl.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_nl.c
@@ -7,8 +7,6 @@
 #include "ice_dcb_nl.h"
 #include <net/dcbnl.h>
 
-#define ICE_APP_PROT_ID_ROCE	0x8915
-
 /**
  * ice_dcbnl_devreset - perform enough of a ifdown/ifup to sync DCBNL info
  * @netdev: device associated with interface that needs reset
-- 
2.26.2

[net-next 03/15] ice: set VF default LAN address

[Jeff Kirsher]

From: Paul Greenwalt <paul.greenwalt@intel.com>

Remove is_zero_ether_add() check when setting the VF default LAN address.
This check assumed that the address had been delete and zeroed before
calling ice_vc_add_mac_addr(). Now the default LAN address will be set
to the last unicast MAC address added by the VF.

The default LAN address is reported by the PF via ndo_get_vf_config.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index 9b09a111321c..efd54299a220 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -2862,9 +2862,11 @@ ice_vc_add_mac_addr(struct ice_vf *vf, struct ice_vsi *vsi, u8 *mac_addr)
 		return -EIO;
 	}
 
-	/* only set dflt_lan_addr once */
-	if (is_zero_ether_addr(vf->dflt_lan_addr.addr) &&
-	    is_unicast_ether_addr(mac_addr))
+	/* Set the default LAN address to the latest unicast MAC address added
+	 * by the VF. The default LAN address is reported by the PF via
+	 * ndo_get_vf_config.
+	 */
+	if (is_unicast_ether_addr(mac_addr))
 		ether_addr_copy(vf->dflt_lan_addr.addr, mac_addr);
 
 	vf->num_mac++;
-- 
2.26.2

[net-next 04/15] ice: fix MAC write command

[Jeff Kirsher]

From: Jesse Brandeburg <jesse.brandeburg@intel.com>

The manage MAC write command was implemented in an overly complex way
that actually didn't work, as it wasn't symmetric to the manage MAC
read command, and was feeding bytes out of order to the firmware. Fix
the implementation by just using a simple array to represent the MAC
address when it is being written via firmware command.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_adminq_cmd.h | 10 ++++------
 drivers/net/ethernet/intel/ice/ice_common.c     |  5 +----
 2 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index 586d69491268..f04c338fb6e0 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -156,13 +156,11 @@ struct ice_aqc_manage_mac_write {
 #define ICE_AQC_MAN_MAC_WR_MC_MAG_EN		BIT(0)
 #define ICE_AQC_MAN_MAC_WR_WOL_LAA_PFR_KEEP	BIT(1)
 #define ICE_AQC_MAN_MAC_WR_S		6
-#define ICE_AQC_MAN_MAC_WR_M		(3 << ICE_AQC_MAN_MAC_WR_S)
+#define ICE_AQC_MAN_MAC_WR_M		ICE_M(3, ICE_AQC_MAN_MAC_WR_S)
 #define ICE_AQC_MAN_MAC_UPDATE_LAA	0
-#define ICE_AQC_MAN_MAC_UPDATE_LAA_WOL	(BIT(0) << ICE_AQC_MAN_MAC_WR_S)
-	/* High 16 bits of MAC address in big endian order */
-	__be16 sah;
-	/* Low 32 bits of MAC address in big endian order */
-	__be32 sal;
+#define ICE_AQC_MAN_MAC_UPDATE_LAA_WOL	BIT(ICE_AQC_MAN_MAC_WR_S)
+	/* byte stream in network order */
+	u8 mac_addr[ETH_ALEN];
 	__le32 addr_high;
 	__le32 addr_low;
 };
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 0a0b00fffaf7..5da369ae33e0 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -1994,10 +1994,7 @@ ice_aq_manage_mac_write(struct ice_hw *hw, const u8 *mac_addr, u8 flags,
 	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_manage_mac_write);
 
 	cmd->flags = flags;
-
-	/* Prep values for flags, sah, sal */
-	cmd->sah = htons(*((const u16 *)mac_addr));
-	cmd->sal = htonl(*((const u32 *)(mac_addr + 2)));
+	ether_addr_copy(cmd->mac_addr, mac_addr);
 
 	return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
 }
-- 
2.26.2

[net-next 05/15] ice: Fix memory leak

[Jeff Kirsher]

From: Surabhi Boob <surabhi.boob@intel.com>

Handle memory leak on filter management initialization failure.

Signed-off-by: Surabhi Boob <surabhi.boob@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_common.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 5da369ae33e0..ee62cfa3a69e 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -387,6 +387,7 @@ ice_aq_set_mac_cfg(struct ice_hw *hw, u16 max_frame_size, struct ice_sq_cd *cd)
 static enum ice_status ice_init_fltr_mgmt_struct(struct ice_hw *hw)
 {
 	struct ice_switch_info *sw;
+	enum ice_status status;
 
 	hw->switch_info = devm_kzalloc(ice_hw_to_dev(hw),
 				       sizeof(*hw->switch_info), GFP_KERNEL);
@@ -397,7 +398,12 @@ static enum ice_status ice_init_fltr_mgmt_struct(struct ice_hw *hw)
 
 	INIT_LIST_HEAD(&sw->vsi_list_map_head);
 
-	return ice_init_def_sw_recp(hw);
+	status = ice_init_def_sw_recp(hw);
+	if (status) {
+		devm_kfree(ice_hw_to_dev(hw), hw->switch_info);
+		return status;
+	}
+	return 0;
 }
 
 /**
-- 
2.26.2

[net-next 06/15] ice: Fix for memory leaks and modify ICE_FREE_CQ_BUFS

[Jeff Kirsher]

From: Surabhi Boob <surabhi.boob@intel.com>

Handle memory leaks during control queue initialization and
buffer allocation failures. The macro ICE_FREE_CQ_BUFS is modified to
re-use for this fix.

Signed-off-by: Surabhi Boob <surabhi.boob@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_controlq.c | 49 +++++++++++--------
 1 file changed, 28 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_controlq.c b/drivers/net/ethernet/intel/ice/ice_controlq.c
index 9a865962296d..62c2c1e621d2 100644
--- a/drivers/net/ethernet/intel/ice/ice_controlq.c
+++ b/drivers/net/ethernet/intel/ice/ice_controlq.c
@@ -199,7 +199,9 @@ ice_alloc_rq_bufs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
 		cq->rq.r.rq_bi[i].pa = 0;
 		cq->rq.r.rq_bi[i].size = 0;
 	}
+	cq->rq.r.rq_bi = NULL;
 	devm_kfree(ice_hw_to_dev(hw), cq->rq.dma_head);
+	cq->rq.dma_head = NULL;
 
 	return ICE_ERR_NO_MEMORY;
 }
@@ -245,7 +247,9 @@ ice_alloc_sq_bufs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
 		cq->sq.r.sq_bi[i].pa = 0;
 		cq->sq.r.sq_bi[i].size = 0;
 	}
+	cq->sq.r.sq_bi = NULL;
 	devm_kfree(ice_hw_to_dev(hw), cq->sq.dma_head);
+	cq->sq.dma_head = NULL;
 
 	return ICE_ERR_NO_MEMORY;
 }
@@ -304,6 +308,28 @@ ice_cfg_rq_regs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
 	return 0;
 }
 
+#define ICE_FREE_CQ_BUFS(hw, qi, ring)					\
+do {									\
+	int i;								\
+	/* free descriptors */						\
+	if ((qi)->ring.r.ring##_bi)					\
+		for (i = 0; i < (qi)->num_##ring##_entries; i++)	\
+			if ((qi)->ring.r.ring##_bi[i].pa) {		\
+				dmam_free_coherent(ice_hw_to_dev(hw),	\
+					(qi)->ring.r.ring##_bi[i].size,	\
+					(qi)->ring.r.ring##_bi[i].va,	\
+					(qi)->ring.r.ring##_bi[i].pa);	\
+					(qi)->ring.r.ring##_bi[i].va = NULL;\
+					(qi)->ring.r.ring##_bi[i].pa = 0;\
+					(qi)->ring.r.ring##_bi[i].size = 0;\
+		}							\
+	/* free the buffer info list */					\
+	if ((qi)->ring.cmd_buf)						\
+		devm_kfree(ice_hw_to_dev(hw), (qi)->ring.cmd_buf);	\
+	/* free DMA head */						\
+	devm_kfree(ice_hw_to_dev(hw), (qi)->ring.dma_head);		\
+} while (0)
+
 /**
  * ice_init_sq - main initialization routine for Control ATQ
  * @hw: pointer to the hardware structure
@@ -357,6 +383,7 @@ static enum ice_status ice_init_sq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
 	goto init_ctrlq_exit;
 
 init_ctrlq_free_rings:
+	ICE_FREE_CQ_BUFS(hw, cq, sq);
 	ice_free_cq_ring(hw, &cq->sq);
 
 init_ctrlq_exit:
@@ -416,33 +443,13 @@ static enum ice_status ice_init_rq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
 	goto init_ctrlq_exit;
 
 init_ctrlq_free_rings:
+	ICE_FREE_CQ_BUFS(hw, cq, rq);
 	ice_free_cq_ring(hw, &cq->rq);
 
 init_ctrlq_exit:
 	return ret_code;
 }
 
-#define ICE_FREE_CQ_BUFS(hw, qi, ring)					\
-do {									\
-	int i;								\
-	/* free descriptors */						\
-	for (i = 0; i < (qi)->num_##ring##_entries; i++)		\
-		if ((qi)->ring.r.ring##_bi[i].pa) {			\
-			dmam_free_coherent(ice_hw_to_dev(hw),		\
-					   (qi)->ring.r.ring##_bi[i].size,\
-					   (qi)->ring.r.ring##_bi[i].va,\
-					   (qi)->ring.r.ring##_bi[i].pa);\
-			(qi)->ring.r.ring##_bi[i].va = NULL;		\
-			(qi)->ring.r.ring##_bi[i].pa = 0;		\
-			(qi)->ring.r.ring##_bi[i].size = 0;		\
-		}							\
-	/* free the buffer info list */					\
-	if ((qi)->ring.cmd_buf)						\
-		devm_kfree(ice_hw_to_dev(hw), (qi)->ring.cmd_buf);	\
-	/* free DMA head */						\
-	devm_kfree(ice_hw_to_dev(hw), (qi)->ring.dma_head);		\
-} while (0)
-
 /**
  * ice_shutdown_sq - shutdown the Control ATQ
  * @hw: pointer to the hardware structure
-- 
2.26.2

[net-next 07/15] ice: Add more Rx errors to netdev's rx_error counter

[Jeff Kirsher]

From: Brett Creeley <brett.creeley@intel.com>

Currently we are only including illegal_bytes and rx_crc_errors in the
PF netdev's rx_error counter. There are many more causes of Rx errors
that the device supports and reports via Ethtool. Accumulate all Rx
errors in the PF netdev's rx_error counter.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_main.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index c2da3e1a2e17..93a42ff7496b 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -4295,7 +4295,13 @@ void ice_update_vsi_stats(struct ice_vsi *vsi)
 	if (vsi->type == ICE_VSI_PF) {
 		cur_ns->rx_crc_errors = pf->stats.crc_errors;
 		cur_ns->rx_errors = pf->stats.crc_errors +
-				    pf->stats.illegal_bytes;
+				    pf->stats.illegal_bytes +
+				    pf->stats.rx_len_errors +
+				    pf->stats.rx_undersize +
+				    pf->hw_csum_rx_error +
+				    pf->stats.rx_jabber +
+				    pf->stats.rx_fragments +
+				    pf->stats.rx_oversize;
 		cur_ns->rx_length_errors = pf->stats.rx_len_errors;
 		/* record drops from the port level */
 		cur_ns->rx_missed_errors = pf->stats.eth.rx_discards;
-- 
2.26.2

[net-next 08/15] ice: Don't allow VLAN stripping change when pvid set

[Jeff Kirsher]

From: Brett Creeley <brett.creeley@intel.com>

Currently, if the PVID is set in the VLAN handling section of the VSI
context the driver still allows VLAN stripping to be enabled/disabled.
VLAN stripping should only be modifiable when the PVID is not set. Fix
this by preventing VLAN stripping modification when PVID is set.

Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_lib.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index f81bd4c30bbc..89962c14e31f 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -1812,6 +1812,12 @@ int ice_vsi_manage_vlan_stripping(struct ice_vsi *vsi, bool ena)
 	enum ice_status status;
 	int ret = 0;
 
+	/* do not allow modifying VLAN stripping when a port VLAN is configured
+	 * on this VSI
+	 */
+	if (vsi->info.pvid)
+		return 0;
+
 	ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
 	if (!ctxt)
 		return -ENOMEM;
-- 
2.26.2

[net-next 09/15] ice: Handle critical FW error during admin queue initialization

[Jeff Kirsher]

From: Evan Swanson <evan.swanson@intel.com>

A race condition between FW and SW can occur between admin queue setup and
the first command sent. A link event may occur and FW attempts to notify a
non-existent queue. FW will set the critical error bit and disable the
queue. When this happens retry queue setup.

Signed-off-by: Evan Swanson <evan.swanson@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_controlq.c | 126 ++++++++++--------
 drivers/net/ethernet/intel/ice/ice_controlq.h |   3 +
 .../net/ethernet/intel/ice/ice_hw_autogen.h   |   2 +
 drivers/net/ethernet/intel/ice/ice_main.c     |   2 +
 drivers/net/ethernet/intel/ice/ice_status.h   |   1 +
 5 files changed, 80 insertions(+), 54 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_controlq.c b/drivers/net/ethernet/intel/ice/ice_controlq.c
index 62c2c1e621d2..479a74efc536 100644
--- a/drivers/net/ethernet/intel/ice/ice_controlq.c
+++ b/drivers/net/ethernet/intel/ice/ice_controlq.c
@@ -12,6 +12,7 @@ do {								\
 	(qinfo)->sq.bal = prefix##_ATQBAL;			\
 	(qinfo)->sq.len_mask = prefix##_ATQLEN_ATQLEN_M;	\
 	(qinfo)->sq.len_ena_mask = prefix##_ATQLEN_ATQENABLE_M;	\
+	(qinfo)->sq.len_crit_mask = prefix##_ATQLEN_ATQCRIT_M;	\
 	(qinfo)->sq.head_mask = prefix##_ATQH_ATQH_M;		\
 	(qinfo)->rq.head = prefix##_ARQH;			\
 	(qinfo)->rq.tail = prefix##_ARQT;			\
@@ -20,6 +21,7 @@ do {								\
 	(qinfo)->rq.bal = prefix##_ARQBAL;			\
 	(qinfo)->rq.len_mask = prefix##_ARQLEN_ARQLEN_M;	\
 	(qinfo)->rq.len_ena_mask = prefix##_ARQLEN_ARQENABLE_M;	\
+	(qinfo)->rq.len_crit_mask = prefix##_ARQLEN_ARQCRIT_M;	\
 	(qinfo)->rq.head_mask = prefix##_ARQH_ARQH_M;		\
 } while (0)
 
@@ -641,6 +643,50 @@ static enum ice_status ice_init_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
 	return ret_code;
 }
 
+/**
+ * ice_shutdown_ctrlq - shutdown routine for any control queue
+ * @hw: pointer to the hardware structure
+ * @q_type: specific Control queue type
+ *
+ * NOTE: this function does not destroy the control queue locks.
+ */
+static void ice_shutdown_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
+{
+	struct ice_ctl_q_info *cq;
+
+	switch (q_type) {
+	case ICE_CTL_Q_ADMIN:
+		cq = &hw->adminq;
+		if (ice_check_sq_alive(hw, cq))
+			ice_aq_q_shutdown(hw, true);
+		break;
+	case ICE_CTL_Q_MAILBOX:
+		cq = &hw->mailboxq;
+		break;
+	default:
+		return;
+	}
+
+	ice_shutdown_sq(hw, cq);
+	ice_shutdown_rq(hw, cq);
+}
+
+/**
+ * ice_shutdown_all_ctrlq - shutdown routine for all control queues
+ * @hw: pointer to the hardware structure
+ *
+ * NOTE: this function does not destroy the control queue locks. The driver
+ * may call this at runtime to shutdown and later restart control queues, such
+ * as in response to a reset event.
+ */
+void ice_shutdown_all_ctrlq(struct ice_hw *hw)
+{
+	/* Shutdown FW admin queue */
+	ice_shutdown_ctrlq(hw, ICE_CTL_Q_ADMIN);
+	/* Shutdown PF-VF Mailbox */
+	ice_shutdown_ctrlq(hw, ICE_CTL_Q_MAILBOX);
+}
+
 /**
  * ice_init_all_ctrlq - main initialization routine for all control queues
  * @hw: pointer to the hardware structure
@@ -656,17 +702,27 @@ static enum ice_status ice_init_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
  */
 enum ice_status ice_init_all_ctrlq(struct ice_hw *hw)
 {
-	enum ice_status ret_code;
+	enum ice_status status;
+	u32 retry = 0;
 
 	/* Init FW admin queue */
-	ret_code = ice_init_ctrlq(hw, ICE_CTL_Q_ADMIN);
-	if (ret_code)
-		return ret_code;
+	do {
+		status = ice_init_ctrlq(hw, ICE_CTL_Q_ADMIN);
+		if (status)
+			return status;
 
-	ret_code = ice_init_check_adminq(hw);
-	if (ret_code)
-		return ret_code;
+		status = ice_init_check_adminq(hw);
+		if (status != ICE_ERR_AQ_FW_CRITICAL)
+			break;
 
+		ice_debug(hw, ICE_DBG_AQ_MSG,
+			  "Retry Admin Queue init due to FW critical error\n");
+		ice_shutdown_ctrlq(hw, ICE_CTL_Q_ADMIN);
+		msleep(ICE_CTL_Q_ADMIN_INIT_MSEC);
+	} while (retry++ < ICE_CTL_Q_ADMIN_INIT_TIMEOUT);
+
+	if (status)
+		return status;
 	/* Init Mailbox queue */
 	return ice_init_ctrlq(hw, ICE_CTL_Q_MAILBOX);
 }
@@ -707,50 +763,6 @@ enum ice_status ice_create_all_ctrlq(struct ice_hw *hw)
 	return ice_init_all_ctrlq(hw);
 }
 
-/**
- * ice_shutdown_ctrlq - shutdown routine for any control queue
- * @hw: pointer to the hardware structure
- * @q_type: specific Control queue type
- *
- * NOTE: this function does not destroy the control queue locks.
- */
-static void ice_shutdown_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
-{
-	struct ice_ctl_q_info *cq;
-
-	switch (q_type) {
-	case ICE_CTL_Q_ADMIN:
-		cq = &hw->adminq;
-		if (ice_check_sq_alive(hw, cq))
-			ice_aq_q_shutdown(hw, true);
-		break;
-	case ICE_CTL_Q_MAILBOX:
-		cq = &hw->mailboxq;
-		break;
-	default:
-		return;
-	}
-
-	ice_shutdown_sq(hw, cq);
-	ice_shutdown_rq(hw, cq);
-}
-
-/**
- * ice_shutdown_all_ctrlq - shutdown routine for all control queues
- * @hw: pointer to the hardware structure
- *
- * NOTE: this function does not destroy the control queue locks. The driver
- * may call this at runtime to shutdown and later restart control queues, such
- * as in response to a reset event.
- */
-void ice_shutdown_all_ctrlq(struct ice_hw *hw)
-{
-	/* Shutdown FW admin queue */
-	ice_shutdown_ctrlq(hw, ICE_CTL_Q_ADMIN);
-	/* Shutdown PF-VF Mailbox */
-	ice_shutdown_ctrlq(hw, ICE_CTL_Q_MAILBOX);
-}
-
 /**
  * ice_destroy_ctrlq_locks - Destroy locks for a control queue
  * @cq: pointer to the control queue
@@ -1049,9 +1061,15 @@ ice_sq_send_cmd(struct ice_hw *hw, struct ice_ctl_q_info *cq,
 
 	/* update the error if time out occurred */
 	if (!cmd_completed) {
-		ice_debug(hw, ICE_DBG_AQ_MSG,
-			  "Control Send Queue Writeback timeout.\n");
-		status = ICE_ERR_AQ_TIMEOUT;
+		if (rd32(hw, cq->rq.len) & cq->rq.len_crit_mask ||
+		    rd32(hw, cq->sq.len) & cq->sq.len_crit_mask) {
+			ice_debug(hw, ICE_DBG_AQ_MSG, "Critical FW error.\n");
+			status = ICE_ERR_AQ_FW_CRITICAL;
+		} else {
+			ice_debug(hw, ICE_DBG_AQ_MSG,
+				  "Control Send Queue Writeback timeout.\n");
+			status = ICE_ERR_AQ_TIMEOUT;
+		}
 	}
 
 sq_send_command_error:
diff --git a/drivers/net/ethernet/intel/ice/ice_controlq.h b/drivers/net/ethernet/intel/ice/ice_controlq.h
index bf0ebe6149e8..faaa08e8171b 100644
--- a/drivers/net/ethernet/intel/ice/ice_controlq.h
+++ b/drivers/net/ethernet/intel/ice/ice_controlq.h
@@ -34,6 +34,8 @@ enum ice_ctl_q {
 /* Control Queue timeout settings - max delay 250ms */
 #define ICE_CTL_Q_SQ_CMD_TIMEOUT	2500  /* Count 2500 times */
 #define ICE_CTL_Q_SQ_CMD_USEC		100   /* Check every 100usec */
+#define ICE_CTL_Q_ADMIN_INIT_TIMEOUT	10    /* Count 10 times */
+#define ICE_CTL_Q_ADMIN_INIT_MSEC	100   /* Check every 100msec */
 
 struct ice_ctl_q_ring {
 	void *dma_head;			/* Virtual address to DMA head */
@@ -59,6 +61,7 @@ struct ice_ctl_q_ring {
 	u32 bal;
 	u32 len_mask;
 	u32 len_ena_mask;
+	u32 len_crit_mask;
 	u32 head_mask;
 };
 
diff --git a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
index 2f1c776747a4..1086c9f778b4 100644
--- a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
+++ b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
@@ -39,6 +39,7 @@
 #define PF_MBX_ARQH_ARQH_M			ICE_M(0x3FF, 0)
 #define PF_MBX_ARQLEN				0x0022E480
 #define PF_MBX_ARQLEN_ARQLEN_M			ICE_M(0x3FF, 0)
+#define PF_MBX_ARQLEN_ARQCRIT_M			BIT(30)
 #define PF_MBX_ARQLEN_ARQENABLE_M		BIT(31)
 #define PF_MBX_ARQT				0x0022E580
 #define PF_MBX_ATQBAH				0x0022E180
@@ -47,6 +48,7 @@
 #define PF_MBX_ATQH_ATQH_M			ICE_M(0x3FF, 0)
 #define PF_MBX_ATQLEN				0x0022E200
 #define PF_MBX_ATQLEN_ATQLEN_M			ICE_M(0x3FF, 0)
+#define PF_MBX_ATQLEN_ATQCRIT_M			BIT(30)
 #define PF_MBX_ATQLEN_ATQENABLE_M		BIT(31)
 #define PF_MBX_ATQT				0x0022E300
 #define PRTDCB_GENC				0x00083000
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 93a42ff7496b..247e7b186b3c 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -5207,6 +5207,8 @@ const char *ice_stat_str(enum ice_status stat_err)
 		return "ICE_ERR_AQ_NO_WORK";
 	case ICE_ERR_AQ_EMPTY:
 		return "ICE_ERR_AQ_EMPTY";
+	case ICE_ERR_AQ_FW_CRITICAL:
+		return "ICE_ERR_AQ_FW_CRITICAL";
 	}
 
 	return "ICE_ERR_UNKNOWN";
diff --git a/drivers/net/ethernet/intel/ice/ice_status.h b/drivers/net/ethernet/intel/ice/ice_status.h
index 546a02856d09..4028c6365172 100644
--- a/drivers/net/ethernet/intel/ice/ice_status.h
+++ b/drivers/net/ethernet/intel/ice/ice_status.h
@@ -37,6 +37,7 @@ enum ice_status {
 	ICE_ERR_AQ_FULL				= -102,
 	ICE_ERR_AQ_NO_WORK			= -103,
 	ICE_ERR_AQ_EMPTY			= -104,
+	ICE_ERR_AQ_FW_CRITICAL			= -105,
 };
 
 #endif /* _ICE_STATUS_H_ */
-- 
2.26.2

[net-next 10/15] ice: Change number of XDP TxQ to 0 when destroying rings

[Jeff Kirsher]

From: Marta Plantykow <marta.a.plantykow@intel.com>

When XDP Tx rings are destroyed the number of XDP Tx queues
is not changing. This patch is changing this number to 0.

Signed-off-by: Marta Plantykow <marta.a.plantykow@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 247e7b186b3c..081fec3131cd 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -1899,6 +1899,9 @@ int ice_destroy_xdp_rings(struct ice_vsi *vsi)
 	for (i = 0; i < vsi->tc_cfg.numtc; i++)
 		max_txqs[i] = vsi->num_txq;
 
+	/* change number of XDP Tx queues to 0 */
+	vsi->num_xdp_txq = 0;
+
 	return ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
 			       max_txqs);
 }
-- 
2.26.2

[net-next 11/15] ice: Add XDP Tx to VSI ring stats

[Jeff Kirsher]

From: Marta Plantykow <marta.a.plantykow@intel.com>

When XDP Tx program is loaded and packets are sent from
interface, VSI statistics are not updated. This patch adds
packets sent on Tx XDP ring to VSI ring stats.

Signed-off-by: Marta Plantykow <marta.a.plantykow@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_main.c | 42 ++++++++++++++++++-----
 1 file changed, 33 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 081fec3131cd..81c5f0ce5b8f 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -4219,6 +4219,33 @@ ice_fetch_u64_stats_per_ring(struct ice_ring *ring, u64 *pkts, u64 *bytes)
 	} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
 }
 
+/**
+ * ice_update_vsi_tx_ring_stats - Update VSI Tx ring stats counters
+ * @vsi: the VSI to be updated
+ * @rings: rings to work on
+ * @count: number of rings
+ */
+static void
+ice_update_vsi_tx_ring_stats(struct ice_vsi *vsi, struct ice_ring **rings,
+			     u16 count)
+{
+	struct rtnl_link_stats64 *vsi_stats = &vsi->net_stats;
+	u16 i;
+
+	for (i = 0; i < count; i++) {
+		struct ice_ring *ring;
+		u64 pkts, bytes;
+
+		ring = READ_ONCE(rings[i]);
+		ice_fetch_u64_stats_per_ring(ring, &pkts, &bytes);
+		vsi_stats->tx_packets += pkts;
+		vsi_stats->tx_bytes += bytes;
+		vsi->tx_restart += ring->tx_stats.restart_q;
+		vsi->tx_busy += ring->tx_stats.tx_busy;
+		vsi->tx_linearize += ring->tx_stats.tx_linearize;
+	}
+}
+
 /**
  * ice_update_vsi_ring_stats - Update VSI stats counters
  * @vsi: the VSI to be updated
@@ -4246,15 +4273,7 @@ static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
 	rcu_read_lock();
 
 	/* update Tx rings counters */
-	ice_for_each_txq(vsi, i) {
-		ring = READ_ONCE(vsi->tx_rings[i]);
-		ice_fetch_u64_stats_per_ring(ring, &pkts, &bytes);
-		vsi_stats->tx_packets += pkts;
-		vsi_stats->tx_bytes += bytes;
-		vsi->tx_restart += ring->tx_stats.restart_q;
-		vsi->tx_busy += ring->tx_stats.tx_busy;
-		vsi->tx_linearize += ring->tx_stats.tx_linearize;
-	}
+	ice_update_vsi_tx_ring_stats(vsi, vsi->tx_rings, vsi->num_txq);
 
 	/* update Rx rings counters */
 	ice_for_each_rxq(vsi, i) {
@@ -4266,6 +4285,11 @@ static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
 		vsi->rx_page_failed += ring->rx_stats.alloc_page_failed;
 	}
 
+	/* update XDP Tx rings counters */
+	if (ice_is_xdp_ena_vsi(vsi))
+		ice_update_vsi_tx_ring_stats(vsi, vsi->xdp_rings,
+					     vsi->num_xdp_txq);
+
 	rcu_read_unlock();
 }
 
-- 
2.26.2

[net-next 12/15] ice: Change number of XDP Tx queues to match number of Rx queues

[Jeff Kirsher]

From: Marta Plantykow <marta.a.plantykow@intel.com>

In current implementation number of XDP Tx queues is the same as
the number of transmit queues, which is not always true. This
patch changes this number to match the number of receive queues.
XDP programs are running on Rx rings, so what we actually need to
provide is the XDP Tx ring per each Rx ring so that the whole XDP
ecosystem is functional, e.g. if the result of XDP prog is XDP_TX
then you have the need to access the XDP Tx ring.

Signed-off-by: Marta Plantykow <marta.a.plantykow@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_lib.c  | 2 +-
 drivers/net/ethernet/intel/ice/ice_main.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index 89962c14e31f..6f3ee8ac11ce 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -2785,7 +2785,7 @@ int ice_vsi_rebuild(struct ice_vsi *vsi, bool init_vsi)
 
 		ice_vsi_map_rings_to_vectors(vsi);
 		if (ice_is_xdp_ena_vsi(vsi)) {
-			vsi->num_xdp_txq = vsi->alloc_txq;
+			vsi->num_xdp_txq = vsi->alloc_rxq;
 			ret = ice_prepare_xdp_rings(vsi, vsi->xdp_prog);
 			if (ret)
 				goto err_vectors;
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 81c5f0ce5b8f..b64c4e796636 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -1935,7 +1935,7 @@ ice_xdp_setup_prog(struct ice_vsi *vsi, struct bpf_prog *prog,
 	}
 
 	if (!ice_is_xdp_ena_vsi(vsi) && prog) {
-		vsi->num_xdp_txq = vsi->alloc_txq;
+		vsi->num_xdp_txq = vsi->alloc_rxq;
 		xdp_ring_err = ice_prepare_xdp_rings(vsi, prog);
 		if (xdp_ring_err)
 			NL_SET_ERR_MSG_MOD(extack, "Setting up XDP Tx resources failed");
-- 
2.26.2

[net-next 13/15] ice: avoid undefined behavior

[Jeff Kirsher]

From: Bruce Allan <bruce.w.allan@intel.com>

When writing the driver's struct ice_tlan_ctx structure, do not write the
8-bit element int_q_state with the associated internal-to-hardware field
which is 122-bits, otherwise the helper function ice_write_byte() will use
undefined behavior when setting the mask used for that write.  This should
not cause any functional change and will avoid use of undefined behavior.
Also, update a comment to highlight this structure element is not written.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_base.c      |  5 +++--
 drivers/net/ethernet/intel/ice/ice_common.c    | 12 ++++++++++--
 drivers/net/ethernet/intel/ice/ice_common.h    |  3 ++-
 drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h |  2 +-
 4 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c
index 9452c0eb70b0..18076e0d12d0 100644
--- a/drivers/net/ethernet/intel/ice/ice_base.c
+++ b/drivers/net/ethernet/intel/ice/ice_base.c
@@ -638,6 +638,7 @@ ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_ring *ring,
 	struct ice_aqc_add_txqs_perq *txq;
 	struct ice_pf *pf = vsi->back;
 	u8 buf_len = sizeof(*qg_buf);
+	struct ice_hw *hw = &pf->hw;
 	enum ice_status status;
 	u16 pf_q;
 	u8 tc;
@@ -646,13 +647,13 @@ ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_ring *ring,
 	ice_setup_tx_ctx(ring, &tlan_ctx, pf_q);
 	/* copy context contents into the qg_buf */
 	qg_buf->txqs[0].txq_id = cpu_to_le16(pf_q);
-	ice_set_ctx((u8 *)&tlan_ctx, qg_buf->txqs[0].txq_ctx,
+	ice_set_ctx(hw, (u8 *)&tlan_ctx, qg_buf->txqs[0].txq_ctx,
 		    ice_tlan_ctx_info);
 
 	/* init queue specific tail reg. It is referred as
 	 * transmit comm scheduler queue doorbell.
 	 */
-	ring->tail = pf->hw.hw_addr + QTX_COMM_DBELL(pf_q);
+	ring->tail = hw->hw_addr + QTX_COMM_DBELL(pf_q);
 
 	if (IS_ENABLED(CONFIG_DCB))
 		tc = ring->dcb_tc;
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index ee62cfa3a69e..8c73e161829d 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -1098,7 +1098,7 @@ ice_write_rxq_ctx(struct ice_hw *hw, struct ice_rlan_ctx *rlan_ctx,
 
 	rlan_ctx->prefena = 1;
 
-	ice_set_ctx((u8 *)rlan_ctx, ctx_buf, ice_rlan_ctx_info);
+	ice_set_ctx(hw, (u8 *)rlan_ctx, ctx_buf, ice_rlan_ctx_info);
 	return ice_copy_rxq_ctx_to_hw(hw, ctx_buf, rxq_index);
 }
 
@@ -3199,12 +3199,14 @@ ice_write_qword(u8 *src_ctx, u8 *dest_ctx, const struct ice_ctx_ele *ce_info)
 
 /**
  * ice_set_ctx - set context bits in packed structure
+ * @hw: pointer to the hardware structure
  * @src_ctx:  pointer to a generic non-packed context structure
  * @dest_ctx: pointer to memory for the packed structure
  * @ce_info:  a description of the structure to be transformed
  */
 enum ice_status
-ice_set_ctx(u8 *src_ctx, u8 *dest_ctx, const struct ice_ctx_ele *ce_info)
+ice_set_ctx(struct ice_hw *hw, u8 *src_ctx, u8 *dest_ctx,
+	    const struct ice_ctx_ele *ce_info)
 {
 	int f;
 
@@ -3213,6 +3215,12 @@ ice_set_ctx(u8 *src_ctx, u8 *dest_ctx, const struct ice_ctx_ele *ce_info)
 		 * using the correct size so that we are correct regardless
 		 * of the endianness of the machine.
 		 */
+		if (ce_info[f].width > (ce_info[f].size_of * BITS_PER_BYTE)) {
+			ice_debug(hw, ICE_DBG_QCTX,
+				  "Field %d width of %d bits larger than size of %d byte(s) ... skipping write\n",
+				  f, ce_info[f].width, ce_info[f].size_of);
+			continue;
+		}
 		switch (ce_info[f].size_of) {
 		case sizeof(u8):
 			ice_write_byte(src_ctx, dest_ctx, &ce_info[f]);
diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
index bea755a658eb..9b9e50d2398b 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.h
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -70,7 +70,8 @@ enum ice_status ice_aq_q_shutdown(struct ice_hw *hw, bool unloading);
 void ice_fill_dflt_direct_cmd_desc(struct ice_aq_desc *desc, u16 opcode);
 extern const struct ice_ctx_ele ice_tlan_ctx_info[];
 enum ice_status
-ice_set_ctx(u8 *src_ctx, u8 *dest_ctx, const struct ice_ctx_ele *ce_info);
+ice_set_ctx(struct ice_hw *hw, u8 *src_ctx, u8 *dest_ctx,
+	    const struct ice_ctx_ele *ce_info);
 
 extern struct mutex ice_global_cfg_lock_sw;
 
diff --git a/drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h b/drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h
index bd2cd3435768..14dfbbc1b2cf 100644
--- a/drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h
+++ b/drivers/net/ethernet/intel/ice/ice_lan_tx_rx.h
@@ -581,7 +581,7 @@ struct ice_tlan_ctx {
 	u8 drop_ena;
 	u8 cache_prof_idx;
 	u8 pkt_shaper_prof_idx;
-	u8 int_q_state;	/* width not needed - internal do not write */
+	u8 int_q_state;	/* width not needed - internal - DO NOT WRITE!!! */
 };
 
 /* macro to make the table lines short */
-- 
2.26.2

[net-next 14/15] ice: Refactor Rx checksum checks

[Jeff Kirsher]

From: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>

We don't need both rx_status and rx_error parameters, as the latter is
a subset of the former. Remove rx_error completely and check the right bit
in rx_status.

Rename rx_status to rx_status0, and rx_status_err1 to
rx_status1. This naming more closely reflects the specification.

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 27 ++++++++-----------
 1 file changed, 11 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
index 1ba97172d8d0..ab2031b1c635 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
@@ -84,17 +84,12 @@ ice_rx_csum(struct ice_ring *ring, struct sk_buff *skb,
 	    union ice_32b_rx_flex_desc *rx_desc, u8 ptype)
 {
 	struct ice_rx_ptype_decoded decoded;
-	u16 rx_error, rx_status;
-	u16 rx_stat_err1;
+	u16 rx_status0, rx_status1;
 	bool ipv4, ipv6;
 
-	rx_status = le16_to_cpu(rx_desc->wb.status_error0);
-	rx_error = rx_status & (BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_IPE_S) |
-				BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_L4E_S) |
-				BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EIPE_S) |
-				BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EUDPE_S));
+	rx_status0 = le16_to_cpu(rx_desc->wb.status_error0);
+	rx_status1 = le16_to_cpu(rx_desc->wb.status_error1);
 
-	rx_stat_err1 = le16_to_cpu(rx_desc->wb.status_error1);
 	decoded = ice_decode_rx_desc_ptype(ptype);
 
 	/* Start with CHECKSUM_NONE and by default csum_level = 0 */
@@ -106,7 +101,7 @@ ice_rx_csum(struct ice_ring *ring, struct sk_buff *skb,
 		return;
 
 	/* check if HW has decoded the packet and checksum */
-	if (!(rx_status & BIT(ICE_RX_FLEX_DESC_STATUS0_L3L4P_S)))
+	if (!(rx_status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_L3L4P_S)))
 		return;
 
 	if (!(decoded.known && decoded.outer_ip))
@@ -117,22 +112,22 @@ ice_rx_csum(struct ice_ring *ring, struct sk_buff *skb,
 	ipv6 = (decoded.outer_ip == ICE_RX_PTYPE_OUTER_IP) &&
 	       (decoded.outer_ip_ver == ICE_RX_PTYPE_OUTER_IPV6);
 
-	if (ipv4 && (rx_error & (BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_IPE_S) |
-				 BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EIPE_S))))
+	if (ipv4 && (rx_status0 & (BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_IPE_S) |
+				   BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EIPE_S))))
 		goto checksum_fail;
-	else if (ipv6 && (rx_status &
-		 (BIT(ICE_RX_FLEX_DESC_STATUS0_IPV6EXADD_S))))
+
+	if (ipv6 && (rx_status0 & (BIT(ICE_RX_FLEX_DESC_STATUS0_IPV6EXADD_S))))
 		goto checksum_fail;
 
 	/* check for L4 errors and handle packets that were not able to be
 	 * checksummed due to arrival speed
 	 */
-	if (rx_error & BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_L4E_S))
+	if (rx_status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_L4E_S))
 		goto checksum_fail;
 
 	/* check for outer UDP checksum error in tunneled packets */
-	if ((rx_stat_err1 & BIT(ICE_RX_FLEX_DESC_STATUS1_NAT_S)) &&
-	    (rx_error & BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EUDPE_S)))
+	if ((rx_status1 & BIT(ICE_RX_FLEX_DESC_STATUS1_NAT_S)) &&
+	    (rx_status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_XSUM_EUDPE_S)))
 		goto checksum_fail;
 
 	/* If there is an outer header present that might contain a checksum
-- 
2.26.2

[net-next 15/15] ice: Check UMEM FQ size when allocating bufs

[Jeff Kirsher]

From: Krzysztof Kazimierczak <krzysztof.kazimierczak@intel.com>

If a UMEM is present on a queue when an interface/queue pair is being
enabled, the driver will try to prepare the Rx buffers in advance to
improve performance. However, if fill queue is shorter than HW Rx ring,
the driver will report failure after getting the last address from the
fill queue.

This still lets the driver process the packets correctly during the NAPI
poll, but leads to a constant NAPI rescheduling. Not allocating the
buffers in advance would result in a potential performance decrease.

Commit d57d76428ae9 ("xsk: Add API to check for available entries in FQ")
provides an API that lets drivers check the number of addresses that the
fill queue holds.

Notify the user if fill queue is not long enough to prepare all buffers
before packet processing starts, and allocate the buffers during the
NAPI poll. If the fill queue size is sufficient, prepare Rx buffers in
advance.

Signed-off-by: Krzysztof Kazimierczak <krzysztof.kazimierczak@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_base.c | 30 ++++++++++++++++-------
 1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c
index 18076e0d12d0..a174911d8994 100644
--- a/drivers/net/ethernet/intel/ice/ice_base.c
+++ b/drivers/net/ethernet/intel/ice/ice_base.c
@@ -281,7 +281,9 @@ ice_setup_tx_ctx(struct ice_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf_q)
  */
 int ice_setup_rx_ctx(struct ice_ring *ring)
 {
+	struct device *dev = ice_pf_to_dev(ring->vsi->back);
 	int chain_len = ICE_MAX_CHAINED_RX_BUFS;
+	u16 num_bufs = ICE_DESC_UNUSED(ring);
 	struct ice_vsi *vsi = ring->vsi;
 	u32 rxdid = ICE_RXDID_FLEX_NIC;
 	struct ice_rlan_ctx rlan_ctx;
@@ -324,7 +326,7 @@ int ice_setup_rx_ctx(struct ice_ring *ring)
 				return err;
 			xsk_buff_set_rxq_info(ring->xsk_umem, &ring->xdp_rxq);
 
-			dev_info(ice_pf_to_dev(vsi->back), "Registered XDP mem model MEM_TYPE_XSK_BUFF_POOL on Rx ring %d\n",
+			dev_info(dev, "Registered XDP mem model MEM_TYPE_XSK_BUFF_POOL on Rx ring %d\n",
 				 ring->q_index);
 		} else {
 			if (!xdp_rxq_info_is_reg(&ring->xdp_rxq))
@@ -408,7 +410,7 @@ int ice_setup_rx_ctx(struct ice_ring *ring)
 	/* Absolute queue number out of 2K needs to be passed */
 	err = ice_write_rxq_ctx(hw, &rlan_ctx, pf_q);
 	if (err) {
-		dev_err(ice_pf_to_dev(vsi->back), "Failed to set LAN Rx queue context for absolute Rx queue %d error: %d\n",
+		dev_err(dev, "Failed to set LAN Rx queue context for absolute Rx queue %d error: %d\n",
 			pf_q, err);
 		return -EIO;
 	}
@@ -426,13 +428,23 @@ int ice_setup_rx_ctx(struct ice_ring *ring)
 	ring->tail = hw->hw_addr + QRX_TAIL(pf_q);
 	writel(0, ring->tail);
 
-	err = ring->xsk_umem ?
-	      ice_alloc_rx_bufs_zc(ring, ICE_DESC_UNUSED(ring)) :
-	      ice_alloc_rx_bufs(ring, ICE_DESC_UNUSED(ring));
-	if (err)
-		dev_info(ice_pf_to_dev(vsi->back), "Failed allocate some buffers on %sRx ring %d (pf_q %d)\n",
-			 ring->xsk_umem ? "UMEM enabled " : "",
-			 ring->q_index, pf_q);
+	if (ring->xsk_umem) {
+		if (!xsk_buff_can_alloc(ring->xsk_umem, num_bufs)) {
+			dev_warn(dev, "UMEM does not provide enough addresses to fill %d buffers on Rx ring %d\n",
+				 num_bufs, ring->q_index);
+			dev_warn(dev, "Change Rx ring/fill queue size to avoid performance issues\n");
+
+			return 0;
+		}
+
+		err = ice_alloc_rx_bufs_zc(ring, num_bufs);
+		if (err)
+			dev_info(dev, "Failed to allocate some buffers on UMEM enabled Rx ring %d (pf_q %d)\n",
+				 ring->q_index, pf_q);
+		return 0;
+	}
+
+	ice_alloc_rx_bufs(ring, num_bufs);
 
 	return 0;
 }
-- 
2.26.2

Re: [net-next 00/15][pull request] 100GbE Intel Wired LAN Driver Updates 2020-05-27

[David Miller]

From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Date: Thu, 28 May 2020 00:25:23 -0700

> This series contains updates to the ice driver only.

Pulled, thanks Jeff.