[PATCH net-next 0/8] sfc: remove nic_data usage in common code

[PATCH net-next 0/8] sfc: remove nic_data usage in common code

[Edward Cree]

efx->nic_data should only be used from NIC-specific code (i.e. nic_type
 functions and things they call), in files like ef10[_sriov].c and
 siena.c.  This series refactors several nic_data usages from common
 code (mainly in mcdi_filters.c) into nic_type functions, in preparation
 for the upcoming ef100 driver which will use those functions but have
 its own struct layout for efx->nic_data distinct from ef10's.
After this series, one nic_data usage (in ptp.c) remains; it wasn't
 clear to me how to fix it, and ef100 devices don't yet have PTP support
 (so the initial ef100 driver will not call that code).

Edward Cree (7):
  sfc: move vport_id to struct efx_nic
  sfc: use efx_has_cap for capability checks outside of NIC-specific
    code
  sfc: move 'must restore' flags out of ef10-specific nic_data
  sfc: rework handling of (firmware) multicast chaining state
  sfc: move rx_rss_context_exclusive into struct efx_mcdi_filter_table
  sfc: make filter table probe caller responsible for adding VLANs
  sfc: make firmware-variant printing a nic_type function

Tom Zhao (1):
  sfc: make capability checking a nic_type function

 drivers/net/ethernet/sfc/ef10.c           | 214 +++++++++++++---------
 drivers/net/ethernet/sfc/ef10_sriov.c     |  27 ++-
 drivers/net/ethernet/sfc/mcdi.c           |  25 +--
 drivers/net/ethernet/sfc/mcdi.h           |  12 ++
 drivers/net/ethernet/sfc/mcdi_filters.c   |  79 ++++----
 drivers/net/ethernet/sfc/mcdi_filters.h   |  17 +-
 drivers/net/ethernet/sfc/mcdi_functions.c |   8 +-
 drivers/net/ethernet/sfc/mcdi_port.c      |   7 +-
 drivers/net/ethernet/sfc/net_driver.h     |  10 +
 drivers/net/ethernet/sfc/nic.h            |  11 --
 drivers/net/ethernet/sfc/ptp.c            |   7 +-
 drivers/net/ethernet/sfc/siena.c          |   7 +
 12 files changed, 238 insertions(+), 186 deletions(-)

[PATCH net-next 1/8] sfc: move vport_id to struct efx_nic

[Edward Cree]

Remove some usage of ef10-specific nic_data structs from common MCDI
 functions, in preparation for using them from a non-EF10 driver.

Signed-off-by: Edward Cree <ecree@solarflare.com>
---
 drivers/net/ethernet/sfc/ef10.c           | 16 +++++++-------
 drivers/net/ethernet/sfc/ef10_sriov.c     | 27 +++++++++++------------
 drivers/net/ethernet/sfc/mcdi_filters.c   |  5 ++---
 drivers/net/ethernet/sfc/mcdi_functions.c |  8 ++-----
 drivers/net/ethernet/sfc/mcdi_port.c      |  7 ++----
 drivers/net/ethernet/sfc/net_driver.h     |  2 ++
 drivers/net/ethernet/sfc/nic.h            |  2 --
 7 files changed, 29 insertions(+), 38 deletions(-)

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 3f16bd807c6e..0ad311ff6796 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -553,7 +553,7 @@ static int efx_ef10_probe(struct efx_nic *efx)
 
 	efx->rss_context.context_id = EFX_MCDI_RSS_CONTEXT_INVALID;
 
-	nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
+	efx->vport_id = EVB_PORT_ID_ASSIGNED;
 
 	/* In case we're recovering from a crash (kexec), we want to
 	 * cancel any outstanding request by the previous user of this
@@ -1335,7 +1335,7 @@ static void efx_ef10_table_reset_mc_allocations(struct efx_nic *efx)
 
 	/* Driver-created vswitches and vports must be re-created */
 	nic_data->must_probe_vswitching = true;
-	nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
+	efx->vport_id = EVB_PORT_ID_ASSIGNED;
 #ifdef CONFIG_SFC_SRIOV
 	if (nic_data->vf)
 		for (i = 0; i < efx->vf_count; i++)
@@ -3158,22 +3158,22 @@ static int efx_ef10_vport_set_mac_address(struct efx_nic *efx)
 	efx_mcdi_filter_table_remove(efx);
 	up_write(&efx->filter_sem);
 
-	rc = efx_ef10_vadaptor_free(efx, nic_data->vport_id);
+	rc = efx_ef10_vadaptor_free(efx, efx->vport_id);
 	if (rc)
 		goto restore_filters;
 
 	ether_addr_copy(mac_old, nic_data->vport_mac);
-	rc = efx_ef10_vport_del_mac(efx, nic_data->vport_id,
+	rc = efx_ef10_vport_del_mac(efx, efx->vport_id,
 				    nic_data->vport_mac);
 	if (rc)
 		goto restore_vadaptor;
 
-	rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id,
+	rc = efx_ef10_vport_add_mac(efx, efx->vport_id,
 				    efx->net_dev->dev_addr);
 	if (!rc) {
 		ether_addr_copy(nic_data->vport_mac, efx->net_dev->dev_addr);
 	} else {
-		rc2 = efx_ef10_vport_add_mac(efx, nic_data->vport_id, mac_old);
+		rc2 = efx_ef10_vport_add_mac(efx, efx->vport_id, mac_old);
 		if (rc2) {
 			/* Failed to add original MAC, so clear vport_mac */
 			eth_zero_addr(nic_data->vport_mac);
@@ -3182,7 +3182,7 @@ static int efx_ef10_vport_set_mac_address(struct efx_nic *efx)
 	}
 
 restore_vadaptor:
-	rc2 = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
+	rc2 = efx_ef10_vadaptor_alloc(efx, efx->vport_id);
 	if (rc2)
 		goto reset_nic;
 restore_filters:
@@ -3225,7 +3225,7 @@ static int efx_ef10_set_mac_address(struct efx_nic *efx)
 	ether_addr_copy(MCDI_PTR(inbuf, VADAPTOR_SET_MAC_IN_MACADDR),
 			efx->net_dev->dev_addr);
 	MCDI_SET_DWORD(inbuf, VADAPTOR_SET_MAC_IN_UPSTREAM_PORT_ID,
-		       nic_data->vport_id);
+		       efx->vport_id);
 	rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VADAPTOR_SET_MAC, inbuf,
 				sizeof(inbuf), NULL, 0, NULL);
 
diff --git a/drivers/net/ethernet/sfc/ef10_sriov.c b/drivers/net/ethernet/sfc/ef10_sriov.c
index 4580b30caae1..21fa6c0e8873 100644
--- a/drivers/net/ethernet/sfc/ef10_sriov.c
+++ b/drivers/net/ethernet/sfc/ef10_sriov.c
@@ -232,15 +232,14 @@ static int efx_ef10_sriov_restore_vf_vswitching(struct efx_nic *efx)
 
 static int efx_ef10_vadaptor_alloc_set_features(struct efx_nic *efx)
 {
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	u32 port_flags;
 	int rc;
 
-	rc = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
+	rc = efx_ef10_vadaptor_alloc(efx, efx->vport_id);
 	if (rc)
 		goto fail_vadaptor_alloc;
 
-	rc = efx_ef10_vadaptor_query(efx, nic_data->vport_id,
+	rc = efx_ef10_vadaptor_query(efx, efx->vport_id,
 				     &port_flags, NULL, NULL);
 	if (rc)
 		goto fail_vadaptor_query;
@@ -281,11 +280,11 @@ int efx_ef10_vswitching_probe_pf(struct efx_nic *efx)
 
 	rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
 				  MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
-				  EFX_EF10_NO_VLAN, &nic_data->vport_id);
+				  EFX_EF10_NO_VLAN, &efx->vport_id);
 	if (rc)
 		goto fail2;
 
-	rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id, net_dev->dev_addr);
+	rc = efx_ef10_vport_add_mac(efx, efx->vport_id, net_dev->dev_addr);
 	if (rc)
 		goto fail3;
 	ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr);
@@ -296,11 +295,11 @@ int efx_ef10_vswitching_probe_pf(struct efx_nic *efx)
 
 	return 0;
 fail4:
-	efx_ef10_vport_del_mac(efx, nic_data->vport_id, nic_data->vport_mac);
+	efx_ef10_vport_del_mac(efx, efx->vport_id, nic_data->vport_mac);
 	eth_zero_addr(nic_data->vport_mac);
 fail3:
-	efx_ef10_vport_free(efx, nic_data->vport_id);
-	nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
+	efx_ef10_vport_free(efx, efx->vport_id);
+	efx->vport_id = EVB_PORT_ID_ASSIGNED;
 fail2:
 	efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED);
 fail1:
@@ -355,22 +354,22 @@ void efx_ef10_vswitching_remove_pf(struct efx_nic *efx)
 
 	efx_ef10_sriov_free_vf_vswitching(efx);
 
-	efx_ef10_vadaptor_free(efx, nic_data->vport_id);
+	efx_ef10_vadaptor_free(efx, efx->vport_id);
 
-	if (nic_data->vport_id == EVB_PORT_ID_ASSIGNED)
+	if (efx->vport_id == EVB_PORT_ID_ASSIGNED)
 		return; /* No vswitch was ever created */
 
 	if (!is_zero_ether_addr(nic_data->vport_mac)) {
-		efx_ef10_vport_del_mac(efx, nic_data->vport_id,
+		efx_ef10_vport_del_mac(efx, efx->vport_id,
 				       efx->net_dev->dev_addr);
 		eth_zero_addr(nic_data->vport_mac);
 	}
-	efx_ef10_vport_free(efx, nic_data->vport_id);
-	nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
+	efx_ef10_vport_free(efx, efx->vport_id);
+	efx->vport_id = EVB_PORT_ID_ASSIGNED;
 
 	/* Only free the vswitch if no VFs are assigned */
 	if (!pci_vfs_assigned(efx->pci_dev))
-		efx_ef10_vswitch_free(efx, nic_data->vport_id);
+		efx_ef10_vswitch_free(efx, efx->vport_id);
 }
 
 void efx_ef10_vswitching_remove_vf(struct efx_nic *efx)
diff --git a/drivers/net/ethernet/sfc/mcdi_filters.c b/drivers/net/ethernet/sfc/mcdi_filters.c
index 4310ae5bd898..e6268556b030 100644
--- a/drivers/net/ethernet/sfc/mcdi_filters.c
+++ b/drivers/net/ethernet/sfc/mcdi_filters.c
@@ -186,7 +186,6 @@ static void efx_mcdi_filter_push_prep(struct efx_nic *efx,
 				      struct efx_rss_context *ctx,
 				      bool replacing)
 {
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	u32 flags = spec->flags;
 
 	memset(inbuf, 0, MC_CMD_FILTER_OP_EXT_IN_LEN);
@@ -211,7 +210,7 @@ static void efx_mcdi_filter_push_prep(struct efx_nic *efx,
 		efx_mcdi_filter_push_prep_set_match_fields(efx, spec, inbuf);
 	}
 
-	MCDI_SET_DWORD(inbuf, FILTER_OP_IN_PORT_ID, nic_data->vport_id);
+	MCDI_SET_DWORD(inbuf, FILTER_OP_IN_PORT_ID, efx->vport_id);
 	MCDI_SET_DWORD(inbuf, FILTER_OP_IN_RX_DEST,
 		       spec->dmaq_id == EFX_FILTER_RX_DMAQ_ID_DROP ?
 		       MC_CMD_FILTER_OP_IN_RX_DEST_DROP :
@@ -1944,7 +1943,7 @@ static int efx_mcdi_filter_alloc_rss_context(struct efx_nic *efx, bool exclusive
 		return -EOPNOTSUPP;
 
 	MCDI_SET_DWORD(inbuf, RSS_CONTEXT_ALLOC_IN_UPSTREAM_PORT_ID,
-		       nic_data->vport_id);
+		       efx->vport_id);
 	MCDI_SET_DWORD(inbuf, RSS_CONTEXT_ALLOC_IN_TYPE, alloc_type);
 	MCDI_SET_DWORD(inbuf, RSS_CONTEXT_ALLOC_IN_NUM_QUEUES, rss_spread);
 
diff --git a/drivers/net/ethernet/sfc/mcdi_functions.c b/drivers/net/ethernet/sfc/mcdi_functions.c
index dcfe78b0fa5a..962d8395d958 100644
--- a/drivers/net/ethernet/sfc/mcdi_functions.c
+++ b/drivers/net/ethernet/sfc/mcdi_functions.c
@@ -168,21 +168,18 @@ int efx_mcdi_tx_init(struct efx_tx_queue *tx_queue, bool tso_v2)
 	size_t entries = tx_queue->txd.buf.len / EFX_BUF_SIZE;
 	struct efx_channel *channel = tx_queue->channel;
 	struct efx_nic *efx = tx_queue->efx;
-	struct efx_ef10_nic_data *nic_data;
 	dma_addr_t dma_addr;
 	size_t inlen;
 	int rc, i;
 
 	BUILD_BUG_ON(MC_CMD_INIT_TXQ_OUT_LEN != 0);
 
-	nic_data = efx->nic_data;
-
 	MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_SIZE, tx_queue->ptr_mask + 1);
 	MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_TARGET_EVQ, channel->channel);
 	MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_LABEL, tx_queue->queue);
 	MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_INSTANCE, tx_queue->queue);
 	MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_OWNER_ID, 0);
-	MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_PORT_ID, nic_data->vport_id);
+	MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_PORT_ID, efx->vport_id);
 
 	dma_addr = tx_queue->txd.buf.dma_addr;
 
@@ -276,7 +273,6 @@ void efx_mcdi_rx_init(struct efx_rx_queue *rx_queue)
 	struct efx_channel *channel = efx_rx_queue_channel(rx_queue);
 	size_t entries = rx_queue->rxd.buf.len / EFX_BUF_SIZE;
 	struct efx_nic *efx = rx_queue->efx;
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	dma_addr_t dma_addr;
 	size_t inlen;
 	int rc;
@@ -295,7 +291,7 @@ void efx_mcdi_rx_init(struct efx_rx_queue *rx_queue)
 			      INIT_RXQ_IN_FLAG_PREFIX, 1,
 			      INIT_RXQ_IN_FLAG_TIMESTAMP, 1);
 	MCDI_SET_DWORD(inbuf, INIT_RXQ_IN_OWNER_ID, 0);
-	MCDI_SET_DWORD(inbuf, INIT_RXQ_IN_PORT_ID, nic_data->vport_id);
+	MCDI_SET_DWORD(inbuf, INIT_RXQ_IN_PORT_ID, efx->vport_id);
 
 	dma_addr = rx_queue->rxd.buf.dma_addr;
 
diff --git a/drivers/net/ethernet/sfc/mcdi_port.c b/drivers/net/ethernet/sfc/mcdi_port.c
index ab5227b13ae6..b807871d8f69 100644
--- a/drivers/net/ethernet/sfc/mcdi_port.c
+++ b/drivers/net/ethernet/sfc/mcdi_port.c
@@ -722,11 +722,8 @@ static int efx_mcdi_mac_stats(struct efx_nic *efx,
 			      MAC_STATS_IN_PERIOD_MS, period);
 	MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
 
-	if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) {
-		struct efx_ef10_nic_data *nic_data = efx->nic_data;
-
-		MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, nic_data->vport_id);
-	}
+	if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0)
+		MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, efx->vport_id);
 
 	rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
 				NULL, 0, NULL);
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index b084e623b5f4..d43f22c8f31c 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -887,6 +887,7 @@ struct efx_async_filter_insertion {
  * @rss_context: Main RSS context.  Its @list member is the head of the list of
  *	RSS contexts created by user requests
  * @rss_lock: Protects custom RSS context software state in @rss_context.list
+ * @vport_id: The function's vport ID, only relevant for PFs
  * @int_error_count: Number of internal errors seen recently
  * @int_error_expire: Time at which error count will be expired
  * @irq_soft_enabled: Are IRQs soft-enabled? If not, IRQ handler will
@@ -1044,6 +1045,7 @@ struct efx_nic {
 	bool rx_scatter;
 	struct efx_rss_context rss_context;
 	struct mutex rss_lock;
+	u32 vport_id;
 
 	unsigned int_error_count;
 	unsigned long int_error_expire;
diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h
index 6670fda8f35a..9e2e387a4b1c 100644
--- a/drivers/net/ethernet/sfc/nic.h
+++ b/drivers/net/ethernet/sfc/nic.h
@@ -385,7 +385,6 @@ enum {
  * %MC_CMD_GET_CAPABILITIES response)
  * @rx_dpcpu_fw_id: Firmware ID of the RxDPCPU
  * @tx_dpcpu_fw_id: Firmware ID of the TxDPCPU
- * @vport_id: The function's vport ID, only relevant for PFs
  * @must_probe_vswitching: Flag: vswitching has yet to be setup after MC reboot
  * @pf_index: The number for this PF, or the parent PF if this is a VF
 #ifdef CONFIG_SFC_SRIOV
@@ -423,7 +422,6 @@ struct efx_ef10_nic_data {
 	u32 datapath_caps2;
 	unsigned int rx_dpcpu_fw_id;
 	unsigned int tx_dpcpu_fw_id;
-	unsigned int vport_id;
 	bool must_probe_vswitching;
 	unsigned int pf_index;
 	u8 port_id[ETH_ALEN];

[PATCH net-next 2/8] sfc: make capability checking a nic_type function

[Edward Cree]

From: Tom Zhao <tzhao@solarflare.com>

Various MCDI functions (especially in filter handling) need to check the
 datapath caps, but those live in nic_data (since they don't exist on
 Siena).  Decouple from ef10-specific data structures by adding check_caps
 to the nic_type, to allow using these functions from non-ef10 drivers.

Also add a convenience macro efx_has_cap() to reduce the amount of
 boilerplate involved in calling it.

Signed-off-by: Edward Cree <ecree@solarflare.com>
---
 drivers/net/ethernet/sfc/ef10.c       | 18 ++++++++++++++++++
 drivers/net/ethernet/sfc/mcdi.h       | 12 ++++++++++++
 drivers/net/ethernet/sfc/net_driver.h |  3 +++
 drivers/net/ethernet/sfc/siena.c      |  7 +++++++
 4 files changed, 40 insertions(+)

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 0ad311ff6796..7b3c6214dee6 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -3961,6 +3961,22 @@ static int efx_ef10_udp_tnl_del_port(struct efx_nic *efx,
 	return rc;
 }
 
+static unsigned int ef10_check_caps(const struct efx_nic *efx,
+				    u8 flag,
+				    u32 offset)
+{
+	const struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+	switch (offset) {
+	case(MC_CMD_GET_CAPABILITIES_V4_OUT_FLAGS1_OFST):
+		return nic_data->datapath_caps & BIT_ULL(flag);
+	case(MC_CMD_GET_CAPABILITIES_V4_OUT_FLAGS2_OFST):
+		return nic_data->datapath_caps2 & BIT_ULL(flag);
+	default:
+		return 0;
+	}
+}
+
 #define EF10_OFFLOAD_FEATURES		\
 	(NETIF_F_IP_CSUM |		\
 	 NETIF_F_HW_VLAN_CTAG_FILTER |	\
@@ -4073,6 +4089,7 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
 	.hwtstamp_filters = 1 << HWTSTAMP_FILTER_NONE |
 			    1 << HWTSTAMP_FILTER_ALL,
 	.rx_hash_key_size = 40,
+	.check_caps = ef10_check_caps,
 };
 
 const struct efx_nic_type efx_hunt_a0_nic_type = {
@@ -4208,4 +4225,5 @@ const struct efx_nic_type efx_hunt_a0_nic_type = {
 	.hwtstamp_filters = 1 << HWTSTAMP_FILTER_NONE |
 			    1 << HWTSTAMP_FILTER_ALL,
 	.rx_hash_key_size = 40,
+	.check_caps = ef10_check_caps,
 };
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h
index 54a45010b576..b107e4c00285 100644
--- a/drivers/net/ethernet/sfc/mcdi.h
+++ b/drivers/net/ethernet/sfc/mcdi.h
@@ -326,6 +326,18 @@ void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
 #define MCDI_EVENT_FIELD(_ev, _field)			\
 	EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
 
+#define MCDI_CAPABILITY(field)						\
+	MC_CMD_GET_CAPABILITIES_V4_OUT_ ## field ## _LBN
+
+#define MCDI_CAPABILITY_OFST(field) \
+	MC_CMD_GET_CAPABILITIES_V4_OUT_ ## field ## _OFST
+
+/* field is FLAGS1 or FLAGS2 */
+#define efx_has_cap(efx, flag, field) \
+	efx->type->check_caps(efx, \
+			      MCDI_CAPABILITY(flag), \
+			      MCDI_CAPABILITY_OFST(field))
+
 void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len);
 int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address,
 			   u16 *fw_subtype_list, u32 *capabilities);
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index d43f22c8f31c..bdeea48ff938 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -1354,6 +1354,9 @@ struct efx_nic_type {
 	void (*get_wol)(struct efx_nic *efx, struct ethtool_wolinfo *wol);
 	int (*set_wol)(struct efx_nic *efx, u32 type);
 	void (*resume_wol)(struct efx_nic *efx);
+	unsigned int (*check_caps)(const struct efx_nic *efx,
+				   u8 flag,
+				   u32 offset);
 	int (*test_chip)(struct efx_nic *efx, struct efx_self_tests *tests);
 	int (*test_nvram)(struct efx_nic *efx);
 	void (*mcdi_request)(struct efx_nic *efx,
diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c
index baa464161626..ed1cb6caa69d 100644
--- a/drivers/net/ethernet/sfc/siena.c
+++ b/drivers/net/ethernet/sfc/siena.c
@@ -948,6 +948,13 @@ static int siena_mtd_probe(struct efx_nic *efx)
 
 #endif /* CONFIG_SFC_MTD */
 
+unsigned int siena_check_caps(const struct efx_nic *efx,
+			      u8 flag, u32 offset)
+{
+	/* Siena did not support MC_CMD_GET_CAPABILITIES */
+	return 0;
+}
+
 /**************************************************************************
  *
  * Revision-dependent attributes used by efx.c and nic.c

[PATCH net-next 3/8] sfc: use efx_has_cap for capability checks outside of NIC-specific code

[Edward Cree]

Removes some efx_ef10_nic_data references from common code.

Signed-off-by: Edward Cree <ecree@solarflare.com>
---
 drivers/net/ethernet/sfc/mcdi_filters.c | 13 ++++---------
 drivers/net/ethernet/sfc/ptp.c          |  7 +------
 2 files changed, 5 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/sfc/mcdi_filters.c b/drivers/net/ethernet/sfc/mcdi_filters.c
index e6268556b030..39f8a91c1222 100644
--- a/drivers/net/ethernet/sfc/mcdi_filters.c
+++ b/drivers/net/ethernet/sfc/mcdi_filters.c
@@ -829,8 +829,7 @@ static int efx_mcdi_filter_insert_def(struct efx_nic *efx,
 		efx_filter_set_uc_def(&spec);
 
 	if (encap_type) {
-		if (nic_data->datapath_caps &
-		    (1 << MC_CMD_GET_CAPABILITIES_OUT_VXLAN_NVGRE_LBN))
+		if (efx_has_cap(efx, VXLAN_NVGRE, FLAGS1))
 			efx_filter_set_encap_type(&spec, encap_type);
 		else
 			/*
@@ -1309,8 +1308,7 @@ int efx_mcdi_filter_table_probe(struct efx_nic *efx)
 	rc = efx_mcdi_filter_table_probe_matches(efx, table, false);
 	if (rc)
 		goto fail;
-	if (nic_data->datapath_caps &
-		   (1 << MC_CMD_GET_CAPABILITIES_OUT_VXLAN_NVGRE_LBN))
+	if (efx_has_cap(efx, VXLAN_NVGRE, FLAGS1))
 		rc = efx_mcdi_filter_table_probe_matches(efx, table, true);
 	if (rc)
 		goto fail;
@@ -1920,7 +1918,6 @@ static int efx_mcdi_filter_alloc_rss_context(struct efx_nic *efx, bool exclusive
 {
 	MCDI_DECLARE_BUF(inbuf, MC_CMD_RSS_CONTEXT_ALLOC_IN_LEN);
 	MCDI_DECLARE_BUF(outbuf, MC_CMD_RSS_CONTEXT_ALLOC_OUT_LEN);
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	size_t outlen;
 	int rc;
 	u32 alloc_type = exclusive ?
@@ -1938,8 +1935,7 @@ static int efx_mcdi_filter_alloc_rss_context(struct efx_nic *efx, bool exclusive
 		return 0;
 	}
 
-	if (nic_data->datapath_caps &
-	    1 << MC_CMD_GET_CAPABILITIES_OUT_RX_RSS_LIMITED_LBN)
+	if (efx_has_cap(efx, RX_RSS_LIMITED, FLAGS1))
 		return -EOPNOTSUPP;
 
 	MCDI_SET_DWORD(inbuf, RSS_CONTEXT_ALLOC_IN_UPSTREAM_PORT_ID,
@@ -1960,8 +1956,7 @@ static int efx_mcdi_filter_alloc_rss_context(struct efx_nic *efx, bool exclusive
 	if (context_size)
 		*context_size = rss_spread;
 
-	if (nic_data->datapath_caps &
-	    1 << MC_CMD_GET_CAPABILITIES_OUT_ADDITIONAL_RSS_MODES_LBN)
+	if (efx_has_cap(efx, ADDITIONAL_RSS_MODES, FLAGS1))
 		efx_mcdi_set_rss_context_flags(efx, ctx);
 
 	return 0;
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index 59b4f16896a8..04c7283d205e 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -352,12 +352,7 @@ static int efx_phc_enable(struct ptp_clock_info *ptp,
 
 bool efx_ptp_use_mac_tx_timestamps(struct efx_nic *efx)
 {
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
-
-	return ((efx_nic_rev(efx) >= EFX_REV_HUNT_A0) &&
-		(nic_data->datapath_caps2 &
-		 (1 << MC_CMD_GET_CAPABILITIES_V2_OUT_TX_MAC_TIMESTAMPING_LBN)
-		));
+	return efx_has_cap(efx, TX_MAC_TIMESTAMPING, FLAGS2);
 }
 
 /* PTP 'extra' channel is still a traffic channel, but we only create TX queues

[PATCH net-next 4/8] sfc: move 'must restore' flags out of ef10-specific nic_data

[Edward Cree]

Common code in mcdi_filters.c uses these flags, so by moving them to
 either struct efx_nic (in the case of must_realloc_vis) or struct
 efx_mcdi_filter_table (for must_restore_rss_contexts and
 must_restore_filters), decouple this code from ef10's nic_data.

Signed-off-by: Edward Cree <ecree@solarflare.com>
---
 drivers/net/ethernet/sfc/ef10.c         | 14 ++++++--------
 drivers/net/ethernet/sfc/mcdi_filters.c | 24 ++++++++++++++++--------
 drivers/net/ethernet/sfc/mcdi_filters.h |  6 ++++++
 drivers/net/ethernet/sfc/net_driver.h   |  2 ++
 drivers/net/ethernet/sfc/nic.h          |  7 -------
 5 files changed, 30 insertions(+), 23 deletions(-)

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 7b3c6214dee6..b33bd6b77501 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -1281,13 +1281,13 @@ static int efx_ef10_init_nic(struct efx_nic *efx)
 		nic_data->must_check_datapath_caps = false;
 	}
 
-	if (nic_data->must_realloc_vis) {
+	if (efx->must_realloc_vis) {
 		/* We cannot let the number of VIs change now */
 		rc = efx_ef10_alloc_vis(efx, nic_data->n_allocated_vis,
 					nic_data->n_allocated_vis);
 		if (rc)
 			return rc;
-		nic_data->must_realloc_vis = false;
+		efx->must_realloc_vis = false;
 	}
 
 	if (nic_data->must_restore_piobufs && nic_data->n_piobufs) {
@@ -1326,9 +1326,8 @@ static void efx_ef10_table_reset_mc_allocations(struct efx_nic *efx)
 #endif
 
 	/* All our allocations have been reset */
-	nic_data->must_realloc_vis = true;
-	nic_data->must_restore_rss_contexts = true;
-	nic_data->must_restore_filters = true;
+	efx->must_realloc_vis = true;
+	efx_mcdi_filter_table_reset_mc_allocations(efx);
 	nic_data->must_restore_piobufs = true;
 	efx_ef10_forget_old_piobufs(efx);
 	efx->rss_context.context_id = EFX_MCDI_RSS_CONTEXT_INVALID;
@@ -3100,16 +3099,15 @@ void efx_ef10_handle_drain_event(struct efx_nic *efx)
 
 static int efx_ef10_fini_dmaq(struct efx_nic *efx)
 {
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
-	struct efx_channel *channel;
 	struct efx_tx_queue *tx_queue;
 	struct efx_rx_queue *rx_queue;
+	struct efx_channel *channel;
 	int pending;
 
 	/* If the MC has just rebooted, the TX/RX queues will have already been
 	 * torn down, but efx->active_queues needs to be set to zero.
 	 */
-	if (nic_data->must_realloc_vis) {
+	if (efx->must_realloc_vis) {
 		atomic_set(&efx->active_queues, 0);
 		return 0;
 	}
diff --git a/drivers/net/ethernet/sfc/mcdi_filters.c b/drivers/net/ethernet/sfc/mcdi_filters.c
index 39f8a91c1222..bb29fc0063bf 100644
--- a/drivers/net/ethernet/sfc/mcdi_filters.c
+++ b/drivers/net/ethernet/sfc/mcdi_filters.c
@@ -331,7 +331,6 @@ static s32 efx_mcdi_filter_insert_locked(struct efx_nic *efx,
 					 bool replace_equal)
 {
 	DECLARE_BITMAP(mc_rem_map, EFX_EF10_FILTER_SEARCH_LIMIT);
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	struct efx_mcdi_filter_table *table;
 	struct efx_filter_spec *saved_spec;
 	struct efx_rss_context *ctx = NULL;
@@ -460,7 +459,7 @@ static s32 efx_mcdi_filter_insert_locked(struct efx_nic *efx,
 	rc = efx_mcdi_filter_push(efx, spec, &table->entry[ins_index].handle,
 				  ctx, replacing);
 
-	if (rc == -EINVAL && nic_data->must_realloc_vis)
+	if (rc == -EINVAL && efx->must_realloc_vis)
 		/* The MC rebooted under us, causing it to reject our filter
 		 * insertion as pointing to an invalid VI (spec->dmaq_id).
 		 */
@@ -1355,6 +1354,16 @@ int efx_mcdi_filter_table_probe(struct efx_nic *efx)
 	return rc;
 }
 
+void efx_mcdi_filter_table_reset_mc_allocations(struct efx_nic *efx)
+{
+	struct efx_mcdi_filter_table *table = efx->filter_state;
+
+	if (table) {
+		table->must_restore_filters = true;
+		table->must_restore_rss_contexts = true;
+	}
+}
+
 /*
  * Caller must hold efx->filter_sem for read if race against
  * efx_mcdi_filter_table_remove() is possible
@@ -1362,7 +1371,6 @@ int efx_mcdi_filter_table_probe(struct efx_nic *efx)
 void efx_mcdi_filter_table_restore(struct efx_nic *efx)
 {
 	struct efx_mcdi_filter_table *table = efx->filter_state;
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	unsigned int invalid_filters = 0, failed = 0;
 	struct efx_mcdi_filter_vlan *vlan;
 	struct efx_filter_spec *spec;
@@ -1374,7 +1382,7 @@ void efx_mcdi_filter_table_restore(struct efx_nic *efx)
 
 	WARN_ON(!rwsem_is_locked(&efx->filter_sem));
 
-	if (!nic_data->must_restore_filters)
+	if (!table->must_restore_filters)
 		return;
 
 	if (!table)
@@ -1453,7 +1461,7 @@ void efx_mcdi_filter_table_restore(struct efx_nic *efx)
 		netif_err(efx, hw, efx->net_dev,
 			  "unable to restore %u filters\n", failed);
 	else
-		nic_data->must_restore_filters = false;
+		table->must_restore_filters = false;
 }
 
 void efx_mcdi_filter_table_remove(struct efx_nic *efx)
@@ -2176,13 +2184,13 @@ int efx_mcdi_rx_pull_rss_config(struct efx_nic *efx)
 
 void efx_mcdi_rx_restore_rss_contexts(struct efx_nic *efx)
 {
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
+	struct efx_mcdi_filter_table *table = efx->filter_state;
 	struct efx_rss_context *ctx;
 	int rc;
 
 	WARN_ON(!mutex_is_locked(&efx->rss_lock));
 
-	if (!nic_data->must_restore_rss_contexts)
+	if (!table->must_restore_rss_contexts)
 		return;
 
 	list_for_each_entry(ctx, &efx->rss_context.list, list) {
@@ -2198,7 +2206,7 @@ void efx_mcdi_rx_restore_rss_contexts(struct efx_nic *efx)
 				   "; RSS filters may fail to be applied\n",
 				   ctx->user_id, rc);
 	}
-	nic_data->must_restore_rss_contexts = false;
+	table->must_restore_rss_contexts = false;
 }
 
 int efx_mcdi_pf_rx_push_rss_config(struct efx_nic *efx, bool user,
diff --git a/drivers/net/ethernet/sfc/mcdi_filters.h b/drivers/net/ethernet/sfc/mcdi_filters.h
index 1837f4f5d661..884ba9731131 100644
--- a/drivers/net/ethernet/sfc/mcdi_filters.h
+++ b/drivers/net/ethernet/sfc/mcdi_filters.h
@@ -75,6 +75,10 @@ struct efx_mcdi_filter_table {
 /* Whether in multicast promiscuous mode when last changed */
 	bool mc_promisc_last;
 	bool mc_overflow; /* Too many MC addrs; should always imply mc_promisc */
+	/* RSS contexts have yet to be restored after MC reboot */
+	bool must_restore_rss_contexts;
+	/* filters have yet to be restored after MC reboot */
+	bool must_restore_filters;
 	bool vlan_filter;
 	struct list_head vlan_list;
 };
@@ -83,6 +87,8 @@ int efx_mcdi_filter_table_probe(struct efx_nic *efx);
 void efx_mcdi_filter_table_remove(struct efx_nic *efx);
 void efx_mcdi_filter_table_restore(struct efx_nic *efx);
 
+void efx_mcdi_filter_table_reset_mc_allocations(struct efx_nic *efx);
+
 /*
  * The filter table(s) are managed by firmware and we have write-only
  * access.  When removing filters we must identify them to the
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index bdeea48ff938..ae9756811dfe 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -890,6 +890,7 @@ struct efx_async_filter_insertion {
  * @vport_id: The function's vport ID, only relevant for PFs
  * @int_error_count: Number of internal errors seen recently
  * @int_error_expire: Time at which error count will be expired
+ * @must_realloc_vis: Flag: VIs have yet to be reallocated after MC reboot
  * @irq_soft_enabled: Are IRQs soft-enabled? If not, IRQ handler will
  *	acknowledge but do nothing else.
  * @irq_status: Interrupt status buffer
@@ -1050,6 +1051,7 @@ struct efx_nic {
 	unsigned int_error_count;
 	unsigned long int_error_expire;
 
+	bool must_realloc_vis;
 	bool irq_soft_enabled;
 	struct efx_buffer irq_status;
 	unsigned irq_zero_count;
diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h
index 9e2e387a4b1c..46583ba8fa24 100644
--- a/drivers/net/ethernet/sfc/nic.h
+++ b/drivers/net/ethernet/sfc/nic.h
@@ -360,10 +360,6 @@ enum {
  * @warm_boot_count: Last seen MC warm boot count
  * @vi_base: Absolute index of first VI in this function
  * @n_allocated_vis: Number of VIs allocated to this function
- * @must_realloc_vis: Flag: VIs have yet to be reallocated after MC reboot
- * @must_restore_rss_contexts: Flag: RSS contexts have yet to be restored after
- *	MC reboot
- * @must_restore_filters: Flag: filters have yet to be restored after MC reboot
  * @n_piobufs: Number of PIO buffers allocated to this function
  * @wc_membase: Base address of write-combining mapping of the memory BAR
  * @pio_write_base: Base address for writing PIO buffers
@@ -403,9 +399,6 @@ struct efx_ef10_nic_data {
 	u16 warm_boot_count;
 	unsigned int vi_base;
 	unsigned int n_allocated_vis;
-	bool must_realloc_vis;
-	bool must_restore_rss_contexts;
-	bool must_restore_filters;
 	unsigned int n_piobufs;
 	void __iomem *wc_membase, *pio_write_base;
 	unsigned int pio_write_vi_base;

[PATCH net-next 5/8] sfc: rework handling of (firmware) multicast chaining state

[Edward Cree]

Store the mc_chaining bit in struct efx_mcdi_filter_table, so that common
 code in mcdi_filters.c doesn't need to get it from ef10-specific nic_data.
Also, probe the firmware workaround just before the call to
 efx_mcdi_filter_table_probe(), rather than in a random other part of the
 driver bringup, to ensure that (a) it gets probed in time and (b) it gets
 reprobed as necessary on resets, no matter how the surrounding code gets
 reorganised and reordered.

Signed-off-by: Edward Cree <ecree@solarflare.com>
---
 drivers/net/ethernet/sfc/ef10.c         | 141 +++++++++++++-----------
 drivers/net/ethernet/sfc/mcdi_filters.c |  15 ++-
 drivers/net/ethernet/sfc/mcdi_filters.h |   9 +-
 3 files changed, 90 insertions(+), 75 deletions(-)

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index b33bd6b77501..0779dda7d29f 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -2388,6 +2388,76 @@ static void efx_ef10_tx_write(struct efx_tx_queue *tx_queue)
 	}
 }
 
+static int efx_ef10_probe_multicast_chaining(struct efx_nic *efx)
+{
+	struct efx_ef10_nic_data *nic_data = efx->nic_data;
+	unsigned int enabled, implemented;
+	bool want_workaround_26807;
+	int rc;
+
+	rc = efx_mcdi_get_workarounds(efx, &implemented, &enabled);
+	if (rc == -ENOSYS) {
+		/* GET_WORKAROUNDS was implemented before this workaround,
+		 * thus it must be unavailable in this firmware.
+		 */
+		nic_data->workaround_26807 = false;
+		return 0;
+	}
+	if (rc)
+		return rc;
+	want_workaround_26807 =
+		implemented & MC_CMD_GET_WORKAROUNDS_OUT_BUG26807;
+	nic_data->workaround_26807 =
+		!!(enabled & MC_CMD_GET_WORKAROUNDS_OUT_BUG26807);
+
+	if (want_workaround_26807 && !nic_data->workaround_26807) {
+		unsigned int flags;
+
+		rc = efx_mcdi_set_workaround(efx,
+					     MC_CMD_WORKAROUND_BUG26807,
+					     true, &flags);
+		if (!rc) {
+			if (flags &
+			    1 << MC_CMD_WORKAROUND_EXT_OUT_FLR_DONE_LBN) {
+				netif_info(efx, drv, efx->net_dev,
+					   "other functions on NIC have been reset\n");
+
+				/* With MCFW v4.6.x and earlier, the
+				 * boot count will have incremented,
+				 * so re-read the warm_boot_count
+				 * value now to ensure this function
+				 * doesn't think it has changed next
+				 * time it checks.
+				 */
+				rc = efx_ef10_get_warm_boot_count(efx);
+				if (rc >= 0) {
+					nic_data->warm_boot_count = rc;
+					rc = 0;
+				}
+			}
+			nic_data->workaround_26807 = true;
+		} else if (rc == -EPERM) {
+			rc = 0;
+		}
+	}
+	return rc;
+}
+
+static int efx_ef10_filter_table_probe(struct efx_nic *efx)
+{
+	struct efx_ef10_nic_data *nic_data = efx->nic_data;
+	int rc = efx_ef10_probe_multicast_chaining(efx);
+
+	if (rc)
+		return rc;
+	rc = efx_mcdi_filter_table_probe(efx, nic_data->workaround_26807);
+
+	if (rc)
+		return rc;
+
+	return 0;
+}
+
 /* This creates an entry in the RX descriptor queue */
 static inline void
 efx_ef10_build_rx_desc(struct efx_rx_queue *rx_queue, unsigned int index)
@@ -2463,75 +2533,14 @@ static int efx_ef10_ev_init(struct efx_channel *channel)
 {
 	struct efx_nic *efx = channel->efx;
 	struct efx_ef10_nic_data *nic_data;
-	unsigned int enabled, implemented;
 	bool use_v2, cut_thru;
-	int rc;
 
 	nic_data = efx->nic_data;
 	use_v2 = nic_data->datapath_caps2 &
 			    1 << MC_CMD_GET_CAPABILITIES_V2_OUT_INIT_EVQ_V2_LBN;
 	cut_thru = !(nic_data->datapath_caps &
 			      1 << MC_CMD_GET_CAPABILITIES_OUT_RX_BATCHING_LBN);
-	rc = efx_mcdi_ev_init(channel, cut_thru, use_v2);
-
-	/* IRQ return is ignored */
-	if (channel->channel || rc)
-		return rc;
-
-	/* Successfully created event queue on channel 0 */
-	rc = efx_mcdi_get_workarounds(efx, &implemented, &enabled);
-	if (rc == -ENOSYS) {
-		/* GET_WORKAROUNDS was implemented before this workaround,
-		 * thus it must be unavailable in this firmware.
-		 */
-		nic_data->workaround_26807 = false;
-		rc = 0;
-	} else if (rc) {
-		goto fail;
-	} else {
-		nic_data->workaround_26807 =
-			!!(enabled & MC_CMD_GET_WORKAROUNDS_OUT_BUG26807);
-
-		if (implemented & MC_CMD_GET_WORKAROUNDS_OUT_BUG26807 &&
-		    !nic_data->workaround_26807) {
-			unsigned int flags;
-
-			rc = efx_mcdi_set_workaround(efx,
-						     MC_CMD_WORKAROUND_BUG26807,
-						     true, &flags);
-
-			if (!rc) {
-				if (flags &
-				    1 << MC_CMD_WORKAROUND_EXT_OUT_FLR_DONE_LBN) {
-					netif_info(efx, drv, efx->net_dev,
-						   "other functions on NIC have been reset\n");
-
-					/* With MCFW v4.6.x and earlier, the
-					 * boot count will have incremented,
-					 * so re-read the warm_boot_count
-					 * value now to ensure this function
-					 * doesn't think it has changed next
-					 * time it checks.
-					 */
-					rc = efx_ef10_get_warm_boot_count(efx);
-					if (rc >= 0) {
-						nic_data->warm_boot_count = rc;
-						rc = 0;
-					}
-				}
-				nic_data->workaround_26807 = true;
-			} else if (rc == -EPERM) {
-				rc = 0;
-			}
-		}
-	}
-
-	if (!rc)
-		return 0;
-
-fail:
-	efx_mcdi_ev_fini(channel);
-	return rc;
+	return efx_mcdi_ev_init(channel, cut_thru, use_v2);
 }
 
 static void efx_ef10_handle_rx_wrong_queue(struct efx_rx_queue *rx_queue,
@@ -3185,7 +3194,7 @@ static int efx_ef10_vport_set_mac_address(struct efx_nic *efx)
 		goto reset_nic;
 restore_filters:
 	down_write(&efx->filter_sem);
-	rc2 = efx_mcdi_filter_table_probe(efx);
+	rc2 = efx_ef10_filter_table_probe(efx);
 	up_write(&efx->filter_sem);
 	if (rc2)
 		goto reset_nic;
@@ -3227,7 +3236,7 @@ static int efx_ef10_set_mac_address(struct efx_nic *efx)
 	rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VADAPTOR_SET_MAC, inbuf,
 				sizeof(inbuf), NULL, 0, NULL);
 
-	efx_mcdi_filter_table_probe(efx);
+	efx_ef10_filter_table_probe(efx);
 	up_write(&efx->filter_sem);
 	mutex_unlock(&efx->mac_lock);
 
@@ -4041,7 +4050,7 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
 	.ev_process = efx_ef10_ev_process,
 	.ev_read_ack = efx_ef10_ev_read_ack,
 	.ev_test_generate = efx_ef10_ev_test_generate,
-	.filter_table_probe = efx_mcdi_filter_table_probe,
+	.filter_table_probe = efx_ef10_filter_table_probe,
 	.filter_table_restore = efx_mcdi_filter_table_restore,
 	.filter_table_remove = efx_mcdi_filter_table_remove,
 	.filter_update_rx_scatter = efx_mcdi_update_rx_scatter,
@@ -4154,7 +4163,7 @@ const struct efx_nic_type efx_hunt_a0_nic_type = {
 	.ev_process = efx_ef10_ev_process,
 	.ev_read_ack = efx_ef10_ev_read_ack,
 	.ev_test_generate = efx_ef10_ev_test_generate,
-	.filter_table_probe = efx_mcdi_filter_table_probe,
+	.filter_table_probe = efx_ef10_filter_table_probe,
 	.filter_table_restore = efx_mcdi_filter_table_restore,
 	.filter_table_remove = efx_mcdi_filter_table_remove,
 	.filter_update_rx_scatter = efx_mcdi_update_rx_scatter,
diff --git a/drivers/net/ethernet/sfc/mcdi_filters.c b/drivers/net/ethernet/sfc/mcdi_filters.c
index bb29fc0063bf..d3c2e6eb3191 100644
--- a/drivers/net/ethernet/sfc/mcdi_filters.c
+++ b/drivers/net/ethernet/sfc/mcdi_filters.c
@@ -811,7 +811,7 @@ static int efx_mcdi_filter_insert_def(struct efx_nic *efx,
 				      enum efx_encap_type encap_type,
 				      bool multicast, bool rollback)
 {
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
+	struct efx_mcdi_filter_table *table = efx->filter_state;
 	enum efx_filter_flags filter_flags;
 	struct efx_filter_spec spec;
 	u8 baddr[ETH_ALEN];
@@ -896,7 +896,7 @@ static int efx_mcdi_filter_insert_def(struct efx_nic *efx,
 
 		EFX_WARN_ON_PARANOID(*id != EFX_EF10_FILTER_ID_INVALID);
 		*id = efx_mcdi_filter_get_unsafe_id(rc);
-		if (!nic_data->workaround_26807 && !encap_type) {
+		if (!table->mc_chaining && !encap_type) {
 			/* Also need an Ethernet broadcast filter */
 			efx_filter_init_rx(&spec, EFX_FILTER_PRI_AUTO,
 					   filter_flags, 0);
@@ -962,7 +962,6 @@ static void efx_mcdi_filter_vlan_sync_rx_mode(struct efx_nic *efx,
 					      struct efx_mcdi_filter_vlan *vlan)
 {
 	struct efx_mcdi_filter_table *table = efx->filter_state;
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 
 	/*
 	 * Do not install unspecified VID if VLAN filtering is enabled.
@@ -1009,11 +1008,10 @@ static void efx_mcdi_filter_vlan_sync_rx_mode(struct efx_nic *efx,
 	 * If changing promiscuous state with cascaded multicast filters, remove
 	 * old filters first, so that packets are dropped rather than duplicated
 	 */
-	if (nic_data->workaround_26807 &&
-	    table->mc_promisc_last != table->mc_promisc)
+	if (table->mc_chaining && table->mc_promisc_last != table->mc_promisc)
 		efx_mcdi_filter_remove_old(efx);
 	if (table->mc_promisc) {
-		if (nic_data->workaround_26807) {
+		if (table->mc_chaining) {
 			/*
 			 * If we failed to insert promiscuous filters, rollback
 			 * and fall back to individual multicast filters
@@ -1048,7 +1046,7 @@ static void efx_mcdi_filter_vlan_sync_rx_mode(struct efx_nic *efx,
 		 */
 		if (efx_mcdi_filter_insert_addr_list(efx, vlan, true, true)) {
 			/* Changing promisc state, so remove old filters */
-			if (nic_data->workaround_26807)
+			if (table->mc_chaining)
 				efx_mcdi_filter_remove_old(efx);
 			if (efx_mcdi_filter_insert_def(efx, vlan,
 						       EFX_ENCAP_TYPE_NONE,
@@ -1285,7 +1283,7 @@ efx_mcdi_filter_table_probe_matches(struct efx_nic *efx,
 	return 0;
 }
 
-int efx_mcdi_filter_table_probe(struct efx_nic *efx)
+int efx_mcdi_filter_table_probe(struct efx_nic *efx, bool multicast_chaining)
 {
 	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	struct net_device *net_dev = efx->net_dev;
@@ -1303,6 +1301,7 @@ int efx_mcdi_filter_table_probe(struct efx_nic *efx)
 	if (!table)
 		return -ENOMEM;
 
+	table->mc_chaining = multicast_chaining;
 	table->rx_match_count = 0;
 	rc = efx_mcdi_filter_table_probe_matches(efx, table, false);
 	if (rc)
diff --git a/drivers/net/ethernet/sfc/mcdi_filters.h b/drivers/net/ethernet/sfc/mcdi_filters.h
index 884ba9731131..15b5d62e3670 100644
--- a/drivers/net/ethernet/sfc/mcdi_filters.h
+++ b/drivers/net/ethernet/sfc/mcdi_filters.h
@@ -79,11 +79,18 @@ struct efx_mcdi_filter_table {
 	bool must_restore_rss_contexts;
 	/* filters have yet to be restored after MC reboot */
 	bool must_restore_filters;
+	/* Multicast filter chaining allows less-specific filters to receive
+	 * multicast packets that matched more-specific filters.  Early EF10
+	 * firmware didn't support this (SF bug 26807); if mc_chaining == false
+	 * then we still subscribe the dev_mc_list even when mc_promisc to
+	 * prevent another VI stealing the traffic.
+	 */
+	bool mc_chaining;
 	bool vlan_filter;
 	struct list_head vlan_list;
 };
 
-int efx_mcdi_filter_table_probe(struct efx_nic *efx);
+int efx_mcdi_filter_table_probe(struct efx_nic *efx, bool multicast_chaining);
 void efx_mcdi_filter_table_remove(struct efx_nic *efx);
 void efx_mcdi_filter_table_restore(struct efx_nic *efx);
 

[PATCH net-next 6/8] sfc: move rx_rss_context_exclusive into struct efx_mcdi_filter_table

[Edward Cree]

It's both set and used solely by mcdi_filters.c, so there's no reason
 for it to be in ef10-specific nic_data.

Signed-off-by: Edward Cree <ecree@solarflare.com>
---
 drivers/net/ethernet/sfc/mcdi_filters.c | 10 +++++-----
 drivers/net/ethernet/sfc/mcdi_filters.h |  2 ++
 drivers/net/ethernet/sfc/nic.h          |  2 --
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/sfc/mcdi_filters.c b/drivers/net/ethernet/sfc/mcdi_filters.c
index d3c2e6eb3191..e99b3149c4ae 100644
--- a/drivers/net/ethernet/sfc/mcdi_filters.c
+++ b/drivers/net/ethernet/sfc/mcdi_filters.c
@@ -2031,14 +2031,14 @@ void efx_mcdi_rx_free_indir_table(struct efx_nic *efx)
 static int efx_mcdi_filter_rx_push_shared_rss_config(struct efx_nic *efx,
 					      unsigned *context_size)
 {
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
+	struct efx_mcdi_filter_table *table = efx->filter_state;
 	int rc = efx_mcdi_filter_alloc_rss_context(efx, false, &efx->rss_context,
 					    context_size);
 
 	if (rc != 0)
 		return rc;
 
-	nic_data->rx_rss_context_exclusive = false;
+	table->rx_rss_context_exclusive = false;
 	efx_set_default_rx_indir_table(efx, &efx->rss_context);
 	return 0;
 }
@@ -2047,12 +2047,12 @@ static int efx_mcdi_filter_rx_push_exclusive_rss_config(struct efx_nic *efx,
 						 const u32 *rx_indir_table,
 						 const u8 *key)
 {
+	struct efx_mcdi_filter_table *table = efx->filter_state;
 	u32 old_rx_rss_context = efx->rss_context.context_id;
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	int rc;
 
 	if (efx->rss_context.context_id == EFX_MCDI_RSS_CONTEXT_INVALID ||
-	    !nic_data->rx_rss_context_exclusive) {
+	    !table->rx_rss_context_exclusive) {
 		rc = efx_mcdi_filter_alloc_rss_context(efx, true, &efx->rss_context,
 						NULL);
 		if (rc == -EOPNOTSUPP)
@@ -2069,7 +2069,7 @@ static int efx_mcdi_filter_rx_push_exclusive_rss_config(struct efx_nic *efx,
 	if (efx->rss_context.context_id != old_rx_rss_context &&
 	    old_rx_rss_context != EFX_MCDI_RSS_CONTEXT_INVALID)
 		WARN_ON(efx_mcdi_filter_free_rss_context(efx, old_rx_rss_context) != 0);
-	nic_data->rx_rss_context_exclusive = true;
+	table->rx_rss_context_exclusive = true;
 	if (rx_indir_table != efx->rss_context.rx_indir_table)
 		memcpy(efx->rss_context.rx_indir_table, rx_indir_table,
 		       sizeof(efx->rss_context.rx_indir_table));
diff --git a/drivers/net/ethernet/sfc/mcdi_filters.h b/drivers/net/ethernet/sfc/mcdi_filters.h
index 15b5d62e3670..03a8bf74c733 100644
--- a/drivers/net/ethernet/sfc/mcdi_filters.h
+++ b/drivers/net/ethernet/sfc/mcdi_filters.h
@@ -55,6 +55,8 @@ struct efx_mcdi_filter_table {
 	u32 rx_match_mcdi_flags[
 		MC_CMD_GET_PARSER_DISP_INFO_OUT_SUPPORTED_MATCHES_MAXNUM * 2];
 	unsigned int rx_match_count;
+	/* Our RSS context is exclusive (as opposed to shared) */
+	bool rx_rss_context_exclusive;
 
 	struct rw_semaphore lock; /* Protects entries */
 	struct {
diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h
index 46583ba8fa24..8f73c5d996eb 100644
--- a/drivers/net/ethernet/sfc/nic.h
+++ b/drivers/net/ethernet/sfc/nic.h
@@ -368,7 +368,6 @@ enum {
  * @piobuf_size: size of a single PIO buffer
  * @must_restore_piobufs: Flag: PIO buffers have yet to be restored after MC
  *	reboot
- * @rx_rss_context_exclusive: Whether our RSS context is exclusive or shared
  * @stats: Hardware statistics
  * @workaround_35388: Flag: firmware supports workaround for bug 35388
  * @workaround_26807: Flag: firmware supports workaround for bug 26807
@@ -405,7 +404,6 @@ struct efx_ef10_nic_data {
 	unsigned int piobuf_handle[EF10_TX_PIOBUF_COUNT];
 	u16 piobuf_size;
 	bool must_restore_piobufs;
-	bool rx_rss_context_exclusive;
 	u64 stats[EF10_STAT_COUNT];
 	bool workaround_35388;
 	bool workaround_26807;

[PATCH net-next 7/8] sfc: make filter table probe caller responsible for adding VLANs

[Edward Cree]

By making the caller of efx_mcdi_filter_table_probe() loop over the
 vlan_list calling efx_mcdi_filter_add_vlan(), instead of doing it in
 efx_mcdi_filter_table_probe(), the latter avoids looking in ef10-
 specific nic_data.

Signed-off-by: Edward Cree <ecree@solarflare.com>
---
 drivers/net/ethernet/sfc/ef10.c         | 10 ++++++++++
 drivers/net/ethernet/sfc/mcdi_filters.c | 12 ------------
 2 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 0779dda7d29f..d7d2edc4d81a 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -2447,6 +2447,7 @@ static int efx_ef10_filter_table_probe(struct efx_nic *efx)
 {
 	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	int rc = efx_ef10_probe_multicast_chaining(efx);
+	struct efx_mcdi_filter_vlan *vlan;
 
 	if (rc)
 		return rc;
@@ -2455,7 +2456,16 @@ static int efx_ef10_filter_table_probe(struct efx_nic *efx)
 	if (rc)
 		return rc;
 
+	list_for_each_entry(vlan, &nic_data->vlan_list, list) {
+		rc = efx_mcdi_filter_add_vlan(efx, vlan->vid);
+		if (rc)
+			goto fail_add_vlan;
+	}
 	return 0;
+
+fail_add_vlan:
+	efx_mcdi_filter_table_remove(efx);
+	return rc;
 }
 
 /* This creates an entry in the RX descriptor queue */
diff --git a/drivers/net/ethernet/sfc/mcdi_filters.c b/drivers/net/ethernet/sfc/mcdi_filters.c
index e99b3149c4ae..88de95a8c08c 100644
--- a/drivers/net/ethernet/sfc/mcdi_filters.c
+++ b/drivers/net/ethernet/sfc/mcdi_filters.c
@@ -1285,10 +1285,8 @@ efx_mcdi_filter_table_probe_matches(struct efx_nic *efx,
 
 int efx_mcdi_filter_table_probe(struct efx_nic *efx, bool multicast_chaining)
 {
-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	struct net_device *net_dev = efx->net_dev;
 	struct efx_mcdi_filter_table *table;
-	struct efx_mcdi_filter_vlan *vlan;
 	int rc;
 
 	if (!efx_rwsem_assert_write_locked(&efx->filter_sem))
@@ -1337,17 +1335,7 @@ int efx_mcdi_filter_table_probe(struct efx_nic *efx, bool multicast_chaining)
 
 	efx->filter_state = table;
 
-	list_for_each_entry(vlan, &nic_data->vlan_list, list) {
-		rc = efx_mcdi_filter_add_vlan(efx, vlan->vid);
-		if (rc)
-			goto fail_add_vlan;
-	}
-
 	return 0;
-
-fail_add_vlan:
-	efx_mcdi_filter_cleanup_vlans(efx);
-	efx->filter_state = NULL;
 fail:
 	kfree(table);
 	return rc;

[PATCH net-next 8/8] sfc: make firmware-variant printing a nic_type function

[Edward Cree]

Instead of having efx_mcdi_print_fwver() look at efx_nic_rev and
 conditionally poke around inside ef10-specific nic_data, add a new
 efx->type->print_additional_fwver() method to do this work.

Signed-off-by: Edward Cree <ecree@solarflare.com>
---
 drivers/net/ethernet/sfc/ef10.c       | 15 +++++++++++++++
 drivers/net/ethernet/sfc/mcdi.c       | 25 +++++++++----------------
 drivers/net/ethernet/sfc/net_driver.h |  3 +++
 3 files changed, 27 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index d7d2edc4d81a..e634e8110585 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -3978,6 +3978,19 @@ static int efx_ef10_udp_tnl_del_port(struct efx_nic *efx,
 	return rc;
 }
 
+/* EF10 may have multiple datapath firmware variants within a
+ * single version.  Report which variants are running.
+ */
+static size_t efx_ef10_print_additional_fwver(struct efx_nic *efx, char *buf,
+					      size_t len)
+{
+	struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+	return scnprintf(buf, len, " rx%x tx%x",
+			 nic_data->rx_dpcpu_fw_id,
+			 nic_data->tx_dpcpu_fw_id);
+}
+
 static unsigned int ef10_check_caps(const struct efx_nic *efx,
 				    u8 flag,
 				    u32 offset)
@@ -4107,6 +4120,7 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
 			    1 << HWTSTAMP_FILTER_ALL,
 	.rx_hash_key_size = 40,
 	.check_caps = ef10_check_caps,
+	.print_additional_fwver = efx_ef10_print_additional_fwver,
 };
 
 const struct efx_nic_type efx_hunt_a0_nic_type = {
@@ -4243,4 +4257,5 @@ const struct efx_nic_type efx_hunt_a0_nic_type = {
 			    1 << HWTSTAMP_FILTER_ALL,
 	.rx_hash_key_size = 40,
 	.check_caps = ef10_check_caps,
+	.print_additional_fwver = efx_ef10_print_additional_fwver,
 };
diff --git a/drivers/net/ethernet/sfc/mcdi.c b/drivers/net/ethernet/sfc/mcdi.c
index 15c731d04065..a8cc3881edce 100644
--- a/drivers/net/ethernet/sfc/mcdi.c
+++ b/drivers/net/ethernet/sfc/mcdi.c
@@ -1425,23 +1425,16 @@ void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len)
 			   le16_to_cpu(ver_words[2]),
 			   le16_to_cpu(ver_words[3]));
 
-	/* EF10 may have multiple datapath firmware variants within a
-	 * single version.  Report which variants are running.
-	 */
-	if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) {
-		struct efx_ef10_nic_data *nic_data = efx->nic_data;
-
-		offset += scnprintf(buf + offset, len - offset, " rx%x tx%x",
-				    nic_data->rx_dpcpu_fw_id,
-				    nic_data->tx_dpcpu_fw_id);
+	if (efx->type->print_additional_fwver)
+		offset += efx->type->print_additional_fwver(efx, buf + offset,
+							    len - offset);
 
-		/* It's theoretically possible for the string to exceed 31
-		 * characters, though in practice the first three version
-		 * components are short enough that this doesn't happen.
-		 */
-		if (WARN_ON(offset >= len))
-			buf[0] = 0;
-	}
+	/* It's theoretically possible for the string to exceed 31
+	 * characters, though in practice the first three version
+	 * components are short enough that this doesn't happen.
+	 */
+	if (WARN_ON(offset >= len))
+		buf[0] = 0;
 
 	return;
 
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index ae9756811dfe..1afb58feb9ab 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -1296,6 +1296,7 @@ struct efx_udp_tunnel {
  * @udp_tnl_add_port: Add a UDP tunnel port
  * @udp_tnl_has_port: Check if a port has been added as UDP tunnel
  * @udp_tnl_del_port: Remove a UDP tunnel port
+ * @print_additional_fwver: Dump NIC-specific additional FW version info
  * @revision: Hardware architecture revision
  * @txd_ptr_tbl_base: TX descriptor ring base address
  * @rxd_ptr_tbl_base: RX descriptor ring base address
@@ -1469,6 +1470,8 @@ struct efx_nic_type {
 	int (*udp_tnl_add_port)(struct efx_nic *efx, struct efx_udp_tunnel tnl);
 	bool (*udp_tnl_has_port)(struct efx_nic *efx, __be16 port);
 	int (*udp_tnl_del_port)(struct efx_nic *efx, struct efx_udp_tunnel tnl);
+	size_t (*print_additional_fwver)(struct efx_nic *efx, char *buf,
+					 size_t len);
 
 	int revision;
 	unsigned int txd_ptr_tbl_base;

Re: [PATCH net-next 0/8] sfc: remove nic_data usage in common code

[David Miller]

From: Edward Cree <ecree@solarflare.com>
Date: Mon, 11 May 2020 13:23:55 +0100

> efx->nic_data should only be used from NIC-specific code (i.e. nic_type
>  functions and things they call), in files like ef10[_sriov].c and
>  siena.c.  This series refactors several nic_data usages from common
>  code (mainly in mcdi_filters.c) into nic_type functions, in preparation
>  for the upcoming ef100 driver which will use those functions but have
>  its own struct layout for efx->nic_data distinct from ef10's.
> After this series, one nic_data usage (in ptp.c) remains; it wasn't
>  clear to me how to fix it, and ef100 devices don't yet have PTP support
>  (so the initial ef100 driver will not call that code).

Series applied, thanks.

Re: [PATCH net-next 2/8] sfc: make capability checking a nic_type function

[Jakub Kicinski]

On Mon, 11 May 2020 13:28:40 +0100 Edward Cree wrote:
> From: Tom Zhao <tzhao@solarflare.com>
> 
> Various MCDI functions (especially in filter handling) need to check the
>  datapath caps, but those live in nic_data (since they don't exist on
>  Siena).  Decouple from ef10-specific data structures by adding check_caps
>  to the nic_type, to allow using these functions from non-ef10 drivers.
> 
> Also add a convenience macro efx_has_cap() to reduce the amount of
>  boilerplate involved in calling it.
> 
> Signed-off-by: Edward Cree <ecree@solarflare.com>

Commit 66119f0b0358 ("sfc: make capability checking a nic_type function")
	author Signed-off-by missing
	author email:    tzhao@solarflare.com
	committer email: kuba@kernel.org
	Signed-off-by: Edward Cree <ecree@solarflare.com>

Errors in tree with Signed-off-by, please fix!

Also with W=1:

 ../drivers/net/ethernet/sfc/siena.c:951:14: warning: symbol 'siena_check_caps' was not declared. Should it be static?
1a3,5
 ../drivers/net/ethernet/sfc/siena.c:951:14: warning: no previous prototype for ‘siena_check_caps’ [-Wmissing-prototypes]
   951 | unsigned int siena_check_caps(const struct efx_nic *efx,
       |              ^~~~~~~~~~~~~~~~

Re: [PATCH net-next 2/8] sfc: make capability checking a nic_type function

[kbuild test robot]

Hi Edward,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on linus/master v5.7-rc5 next-20200511]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Edward-Cree/sfc-remove-nic_data-usage-in-common-code/20200512-011744
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git a6f0b26d6a5dcf27980e65f965779a929039f11d
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-191-gc51a0382-dirty
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)

>> drivers/net/ethernet/sfc/siena.c:951:14: sparse: sparse: symbol 'siena_check_caps' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: [PATCH net-next 2/8] sfc: make capability checking a nic_type function

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 1326 bytes --]

Hi Edward,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on linus/master v5.7-rc5 next-20200511]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Edward-Cree/sfc-remove-nic_data-usage-in-common-code/20200512-011744
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git a6f0b26d6a5dcf27980e65f965779a929039f11d
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-191-gc51a0382-dirty
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)

>> drivers/net/ethernet/sfc/siena.c:951:14: sparse: sparse: symbol 'siena_check_caps' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[RFC PATCH] sfc: siena_check_caps() can be static

[kbuild test robot]

Signed-off-by: kbuild test robot <lkp@intel.com>
---
 siena.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c
index ed1cb6caa69d9..4b4afe81be2a3 100644
--- a/drivers/net/ethernet/sfc/siena.c
+++ b/drivers/net/ethernet/sfc/siena.c
@@ -948,8 +948,8 @@ static int siena_mtd_probe(struct efx_nic *efx)
 
 #endif /* CONFIG_SFC_MTD */
 
-unsigned int siena_check_caps(const struct efx_nic *efx,
-			      u8 flag, u32 offset)
+static unsigned int siena_check_caps(const struct efx_nic *efx,
+				     u8 flag, u32 offset)
 {
 	/* Siena did not support MC_CMD_GET_CAPABILITIES */
 	return 0;

[RFC PATCH] sfc: siena_check_caps() can be static

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 700 bytes --]


Signed-off-by: kbuild test robot <lkp@intel.com>
---
 siena.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c
index ed1cb6caa69d9..4b4afe81be2a3 100644
--- a/drivers/net/ethernet/sfc/siena.c
+++ b/drivers/net/ethernet/sfc/siena.c
@@ -948,8 +948,8 @@ static int siena_mtd_probe(struct efx_nic *efx)
 
 #endif /* CONFIG_SFC_MTD */
 
-unsigned int siena_check_caps(const struct efx_nic *efx,
-			      u8 flag, u32 offset)
+static unsigned int siena_check_caps(const struct efx_nic *efx,
+				     u8 flag, u32 offset)
 {
 	/* Siena did not support MC_CMD_GET_CAPABILITIES */
 	return 0;

Re: [PATCH net-next 2/8] sfc: make capability checking a nic_type function

[Edward Cree]

On 11/05/2020 23:36, Jakub Kicinski wrote:
> Also with W=1:
>
>  ../drivers/net/ethernet/sfc/siena.c:951:14: warning: symbol 'siena_check_caps' was not declared. Should it be static?
> 1a3,5
>  ../drivers/net/ethernet/sfc/siena.c:951:14: warning: no previous prototype for ‘siena_check_caps’ [-Wmissing-prototypes]
>    951 | unsigned int siena_check_caps(const struct efx_nic *efx,
>        |              ^~~~~~~~~~~~~~~~
Yup, it turns out not only is this missing 'static' but it's also not
 used — the assignment into siena_a0_nic_typeis missing, I must have
 screwed up a rebase at some point.  I'll send a follow-up, since Dave
 has already applied it.  Thanks for the review.

(And I'll try to get in the habit of checking the SOBs better; sorry
 about that.  I'm still used to the old "first sign-off is the point
 of exit from the company" flow; plus I messed up my checkpatch
 invocation in a way that prevented it catching this.)

-ed