bnx2x: add afex support

Following patch adds afex multifunction support to the driver (afex
multifunction is based on vntag header) and updates FW version used to 7.2.51.

Support includes the following:

1. Configure vif parameters in firmware (default vlan, vif id, default
   priority, allowed priorities) according to values received from NIC.
2. Configure FW to strip/add default vlan according to afex vlan mode.
3. Notify link up to OS only after vif is fully initialized.
4. Support vif list set/get requests and configure FW accordingly.
5. Supply afex statistics upon request from NIC.
6. Special handling to L2 interface in case of FCoE vif.

Signed-off-by: Barak Witkowski <barak@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnx2x/bnx2x.h

@@ -1063,6 +1063,13 @@ struct bnx2x_slowpath {
 		struct flow_control_configuration pfc_config;
 	} func_rdata;
 
+	/* afex ramrod can not be a part of func_rdata union because these
+	 * events might arrive in parallel to other events from func_rdata.
+	 * Therefore, if they would have been defined in the same union,
+	 * data can get corrupted.
+	 */
+	struct afex_vif_list_ramrod_data func_afex_rdata;
+
 	/* used by dmae command executer */
 	struct dmae_command		dmae[MAX_DMAE_C];
 
@@ -1179,6 +1186,7 @@ struct bnx2x_fw_stats_data {
 enum {
 	BNX2X_SP_RTNL_SETUP_TC,
 	BNX2X_SP_RTNL_TX_TIMEOUT,
+	BNX2X_SP_RTNL_AFEX_F_UPDATE,
 	BNX2X_SP_RTNL_FAN_FAILURE,
 };
 
@@ -1343,13 +1351,14 @@ struct bnx2x {
 	struct cmng_init	cmng;
 
 	u32			mf_config[E1HVN_MAX];
-	u32			mf2_config[E2_FUNC_MAX];
+	u32			mf_ext_config;
 	u32			path_has_ovlan; /* E3 */
 	u16			mf_ov;
 	u8			mf_mode;
 #define IS_MF(bp)		(bp->mf_mode != 0)
 #define IS_MF_SI(bp)		(bp->mf_mode == MULTI_FUNCTION_SI)
 #define IS_MF_SD(bp)		(bp->mf_mode == MULTI_FUNCTION_SD)
+#define IS_MF_AFEX(bp)		(bp->mf_mode == MULTI_FUNCTION_AFEX)
 
 	u8			wol;
 
@@ -1592,6 +1601,9 @@ struct bnx2x {
 	struct dcbx_features			dcbx_remote_feat;
 	u32					dcbx_remote_flags;
 #endif
+	/* AFEX: store default vlan used */
+	int					afex_def_vlan_tag;
+	enum mf_cfg_afex_vlan_mode		afex_vlan_mode;
 	u32					pending_max;
 
 	/* multiple tx classes of service */
@@ -2148,9 +2160,16 @@ void bnx2x_notify_link_changed(struct bnx2x *bp);
 #define IS_MF_ISCSI_SD(bp) (IS_MF_SD(bp) && BNX2X_IS_MF_SD_PROTOCOL_ISCSI(bp))
 #define IS_MF_FCOE_SD(bp) (IS_MF_SD(bp) && BNX2X_IS_MF_SD_PROTOCOL_FCOE(bp))
 
+#define BNX2X_MF_EXT_PROTOCOL_FCOE(bp)  ((bp)->mf_ext_config & \
+					 MACP_FUNC_CFG_FLAGS_FCOE_OFFLOAD)
+
+#define IS_MF_FCOE_AFEX(bp) (IS_MF_AFEX(bp) && BNX2X_MF_EXT_PROTOCOL_FCOE(bp))
 #define IS_MF_STORAGE_SD(bp) (IS_MF_SD(bp) && \
 				(BNX2X_IS_MF_SD_PROTOCOL_ISCSI(bp) || \
 				 BNX2X_IS_MF_SD_PROTOCOL_FCOE(bp)))
+#else
+#define IS_MF_FCOE_AFEX(bp)	false
 #endif
 
+
 #endif /* bnx2x.h */

drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c

@@ -1467,8 +1467,8 @@ void bnx2x_set_num_queues(struct bnx2x *bp)
 	bp->num_queues = bnx2x_calc_num_queues(bp);
 
 #ifdef BCM_CNIC
-	/* override in STORAGE SD mode */
-	if (IS_MF_STORAGE_SD(bp))
+	/* override in STORAGE SD modes */
+	if (IS_MF_STORAGE_SD(bp) || IS_MF_FCOE_AFEX(bp))
 		bp->num_queues = 1;
 #endif
 	/* Add special queues */
@@ -1900,8 +1900,14 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 			SHMEM2_WR(bp, dcc_support,
 				  (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV |
 				   SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV));
+		if (SHMEM2_HAS(bp, afex_driver_support))
+			SHMEM2_WR(bp, afex_driver_support,
+				  SHMEM_AFEX_SUPPORTED_VERSION_ONE);
 	}
 
+	/* Set AFEX default VLAN tag to an invalid value */
+	bp->afex_def_vlan_tag = -1;
+
 	bp->state = BNX2X_STATE_OPENING_WAIT4_PORT;
 	rc = bnx2x_func_start(bp);
 	if (rc) {
@@ -3073,7 +3079,8 @@ int bnx2x_change_mac_addr(struct net_device *dev, void *p)
 	}
 
 #ifdef BCM_CNIC
-	if (IS_MF_STORAGE_SD(bp) && !is_zero_ether_addr(addr->sa_data)) {
+	if ((IS_MF_STORAGE_SD(bp) || IS_MF_FCOE_AFEX(bp)) &&
+	    !is_zero_ether_addr(addr->sa_data)) {
 		BNX2X_ERR("Can't configure non-zero address on iSCSI or FCoE functions in MF-SD mode\n");
 		return -EINVAL;
 	}
@@ -3195,7 +3202,8 @@ static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
 	int rx_ring_size = 0;
 
 #ifdef BCM_CNIC
-	if (!bp->rx_ring_size && IS_MF_STORAGE_SD(bp)) {
+	if (!bp->rx_ring_size &&
+	    (IS_MF_STORAGE_SD(bp) || IS_MF_FCOE_AFEX(bp))) {
 		rx_ring_size = MIN_RX_SIZE_NONTPA;
 		bp->rx_ring_size = rx_ring_size;
 	} else

drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h

@@ -1694,7 +1694,8 @@ static inline bool bnx2x_is_valid_ether_addr(struct bnx2x *bp, u8 *addr)
 	if (is_valid_ether_addr(addr))
 		return true;
 #ifdef BCM_CNIC
-	if (is_zero_ether_addr(addr) && IS_MF_STORAGE_SD(bp))
+	if (is_zero_ether_addr(addr) &&
+	    (IS_MF_STORAGE_SD(bp) || IS_MF_FCOE_AFEX(bp)))
 		return true;
 #endif
 	return false;

drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c

@@ -1430,7 +1430,7 @@ static void bnx2x_get_ringparam(struct net_device *dev,
 	else
 		ering->rx_pending = MAX_RX_AVAIL;
 
-	ering->tx_max_pending = MAX_TX_AVAIL;
+	ering->tx_max_pending = IS_MF_FCOE_AFEX(bp) ? 0 : MAX_TX_AVAIL;
 	ering->tx_pending = bp->tx_ring_size;
 }
 
@@ -1448,7 +1448,7 @@ static int bnx2x_set_ringparam(struct net_device *dev,
 	if ((ering->rx_pending > MAX_RX_AVAIL) ||
 	    (ering->rx_pending < (bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
 						    MIN_RX_SIZE_TPA)) ||
-	    (ering->tx_pending > MAX_TX_AVAIL) ||
+	    (ering->tx_pending > (IS_MF_FCOE_AFEX(bp) ? 0 : MAX_TX_AVAIL)) ||
 	    (ering->tx_pending <= MAX_SKB_FRAGS + 4)) {
 		DP(BNX2X_MSG_ETHTOOL, "Command parameters not supported\n");
 		return -EINVAL;

drivers/net/ethernet/broadcom/bnx2x/bnx2x_fw_defs.h

@@ -387,7 +387,7 @@
 
 #define STATS_QUERY_CMD_COUNT 16
 
-#define NIV_LIST_TABLE_SIZE 4096
+#define AFEX_LIST_TABLE_SIZE 4096
 
 #define INVALID_VNIC_ID	0xFF