Merge branch 'bnx2x'

Yuval Mintz says:

====================
This series contain several small enhancements - chief among those are
the implementation of ethtool's private flags callback to share information
about the storage offload capabilities of its network interfaces,
and the prevention of a link flap when booting from storage area networks.

Changes from V1:
  - Patch 1, removed trailing whitespaces from private flag strings.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 76 insertions, 32 deletions

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
index 3dba2a70a00e..946450d6d988 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
@@ -1937,6 +1937,8 @@ int bnx2x_sp_post(struct bnx2x *bp, int command, int cid,
 void bnx2x_update_coalesce(struct bnx2x *bp);
 int bnx2x_get_cur_phy_idx(struct bnx2x *bp);
 
+bool bnx2x_port_after_undi(struct bnx2x *bp);
+
 static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms,
 			   int wait)
 {
@@ -2137,6 +2139,8 @@ void bnx2x_igu_clear_sb_gen(struct bnx2x *bp, u8 func, u8 idu_sb_id,
 #define ATTN_HARD_WIRED_MASK		0xff00
 #define ATTENTION_ID			4
 
+#define IS_MF_STORAGE_ONLY(bp) (IS_MF_STORAGE_SD(bp) || \
+				 IS_MF_FCOE_AFEX(bp))
 
 /* stuff added to make the code fit 80Col */
 
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index 6cc5101fa96b..f4d1c08c67d3 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -2183,6 +2183,8 @@ alloc_mem_err:
 /* send load request to mcp and analyze response */
 static int bnx2x_nic_load_request(struct bnx2x *bp, u32 *load_code)
 {
+	u32 param;
+
 	/* init fw_seq */
 	bp->fw_seq =
 		(SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_mb_header) &
@@ -2195,9 +2197,13 @@ static int bnx2x_nic_load_request(struct bnx2x *bp, u32 *load_code)
 		 DRV_PULSE_SEQ_MASK);
 	BNX2X_DEV_INFO("drv_pulse 0x%x\n", bp->fw_drv_pulse_wr_seq);
 
+	param = DRV_MSG_CODE_LOAD_REQ_WITH_LFA;
+
+	if (IS_MF_SD(bp) && bnx2x_port_after_undi(bp))
+		param |= DRV_MSG_CODE_LOAD_REQ_FORCE_LFA;
+
 	/* load request */
-	(*load_code) = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ,
-					DRV_MSG_CODE_LOAD_REQ_WITH_LFA);
+	(*load_code) = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, param);
 
 	/* if mcp fails to respond we must abort */
 	if (!(*load_code)) {
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
index ce1a91618677..32aa88f520dc 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
@@ -1921,6 +1921,19 @@ static const char bnx2x_tests_str_arr[BNX2X_NUM_TESTS_SF][ETH_GSTRING_LEN] = {
 	"link_test (online)         "
 };
 
+enum {
+	BNX2X_PRI_FLAG_ISCSI,
+	BNX2X_PRI_FLAG_FCOE,
+	BNX2X_PRI_FLAG_STORAGE,
+	BNX2X_PRI_FLAG_LEN,
+};
+
+static const char bnx2x_private_arr[BNX2X_PRI_FLAG_LEN][ETH_GSTRING_LEN] = {
+	"iSCSI offload support",
+	"FCoE offload support",
+	"Storage only interface"
+};
+
 static u32 bnx2x_eee_to_adv(u32 eee_adv)
 {
 	u32 modes = 0;
@@ -2978,32 +2991,47 @@ static int bnx2x_num_stat_queues(struct bnx2x *bp)
 static int bnx2x_get_sset_count(struct net_device *dev, int stringset)
 {
 	struct bnx2x *bp = netdev_priv(dev);
-	int i, num_stats;
+	int i, num_strings = 0;
 
 	switch (stringset) {
 	case ETH_SS_STATS:
 		if (is_multi(bp)) {
-			num_stats = bnx2x_num_stat_queues(bp) *
-						BNX2X_NUM_Q_STATS;
+			num_strings = bnx2x_num_stat_queues(bp) *
+				      BNX2X_NUM_Q_STATS;
 		} else
-			num_stats = 0;
+			num_strings = 0;
 		if (IS_MF_MODE_STAT(bp)) {
 			for (i = 0; i < BNX2X_NUM_STATS; i++)
 				if (IS_FUNC_STAT(i))
-					num_stats++;
+					num_strings++;
 		} else
-			num_stats += BNX2X_NUM_STATS;
+			num_strings += BNX2X_NUM_STATS;
 
-		return num_stats;
+		return num_strings;
 
 	case ETH_SS_TEST:
 		return BNX2X_NUM_TESTS(bp);
 
+	case ETH_SS_PRIV_FLAGS:
+		return BNX2X_PRI_FLAG_LEN;
+
 	default:
 		return -EINVAL;
 	}
 }
 
+static u32 bnx2x_get_private_flags(struct net_device *dev)
+{
+	struct bnx2x *bp = netdev_priv(dev);
+	u32 flags = 0;
+
+	flags |= (!(bp->flags & NO_ISCSI_FLAG) ? 1 : 0) << BNX2X_PRI_FLAG_ISCSI;
+	flags |= (!(bp->flags & NO_FCOE_FLAG)  ? 1 : 0) << BNX2X_PRI_FLAG_FCOE;
+	flags |= (!!IS_MF_STORAGE_ONLY(bp)) << BNX2X_PRI_FLAG_STORAGE;
+
+	return flags;
+}
+
 static void bnx2x_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
 {
 	struct bnx2x *bp = netdev_priv(dev);
@@ -3045,6 +3073,12 @@ static void bnx2x_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
 			start = 4;
 		memcpy(buf, bnx2x_tests_str_arr + start,
 		       ETH_GSTRING_LEN * BNX2X_NUM_TESTS(bp));
+		break;
+
+	case ETH_SS_PRIV_FLAGS:
+		memcpy(buf, bnx2x_private_arr,
+		       ETH_GSTRING_LEN * BNX2X_PRI_FLAG_LEN);
+		break;
 	}
 }
 
@@ -3112,11 +3146,6 @@ static int bnx2x_set_phys_id(struct net_device *dev,
 		return -EAGAIN;
 	}
 
-	if (!bp->port.pmf) {
-		DP(BNX2X_MSG_ETHTOOL, "Interface is not pmf\n");
-		return -EOPNOTSUPP;
-	}
-
 	switch (state) {
 	case ETHTOOL_ID_ACTIVE:
 		return 1;	/* cycle on/off once per second */
@@ -3445,6 +3474,7 @@ static const struct ethtool_ops bnx2x_ethtool_ops = {
 	.set_pauseparam		= bnx2x_set_pauseparam,
 	.self_test		= bnx2x_self_test,
 	.get_sset_count		= bnx2x_get_sset_count,
+	.get_priv_flags		= bnx2x_get_private_flags,
 	.get_strings		= bnx2x_get_strings,
 	.set_phys_id		= bnx2x_set_phys_id,
 	.get_ethtool_stats	= bnx2x_get_ethtool_stats,
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h
index 12f00a40cdf0..5ef3f964e544 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h
@@ -1323,6 +1323,8 @@ struct drv_func_mb {
 	#define DRV_MSG_CODE_UNLOAD_SKIP_LINK_RESET     0x00000002
 
 	#define DRV_MSG_CODE_LOAD_REQ_WITH_LFA          0x0000100a
+	#define DRV_MSG_CODE_LOAD_REQ_FORCE_LFA         0x00002000
+
 	u32 fw_mb_header;
 	#define FW_MSG_CODE_MASK                        0xffff0000
 	#define FW_MSG_CODE_DRV_LOAD_COMMON             0x10100000
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index b4c9dea93a53..7ed9cdfa115e 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -9780,6 +9780,21 @@ static bool bnx2x_prev_is_path_marked(struct bnx2x *bp)
 	return rc;
 }
 
+bool bnx2x_port_after_undi(struct bnx2x *bp)
+{
+	struct bnx2x_prev_path_list *entry;
+	bool val;
+
+	down(&bnx2x_prev_sem);
+
+	entry = bnx2x_prev_path_get_entry(bp);
+	val = !!(entry && (entry->undi & (1 << BP_PORT(bp))));
+
+	up(&bnx2x_prev_sem);
+
+	return val;
+}
+
 static int bnx2x_prev_mark_path(struct bnx2x *bp, bool after_undi)
 {
 	struct bnx2x_prev_path_list *tmp_list;
@@ -10036,7 +10051,6 @@ static int bnx2x_prev_unload(struct bnx2x *bp)
 {
 	int time_counter = 10;
 	u32 rc, fw, hw_lock_reg, hw_lock_val;
-	struct bnx2x_prev_path_list *prev_list;
 	BNX2X_DEV_INFO("Entering Previous Unload Flow\n");
 
 	/* clear hw from errors which may have resulted from an interrupted
@@ -10107,8 +10121,7 @@ static int bnx2x_prev_unload(struct bnx2x *bp)
 	}
 
 	/* Mark function if its port was used to boot from SAN */
-	prev_list = bnx2x_prev_path_get_entry(bp);
-	if (prev_list && (prev_list->undi & (1 << BP_PORT(bp))))
+	if (bnx2x_port_after_undi(bp))
 		bp->link_params.feature_config_flags |=
 			FEATURE_CONFIG_BOOT_FROM_SAN;
 
@@ -12747,19 +12760,6 @@ static int bnx2x_eeh_nic_unload(struct bnx2x *bp)
 	return 0;
 }
 
-static void bnx2x_eeh_recover(struct bnx2x *bp)
-{
-	u32 val;
-
-	mutex_init(&bp->port.phy_mutex);
-
-
-	val = SHMEM_RD(bp, validity_map[BP_PORT(bp)]);
-	if ((val & (SHR_MEM_VALIDITY_DEV_INFO | SHR_MEM_VALIDITY_MB))
-		!= (SHR_MEM_VALIDITY_DEV_INFO | SHR_MEM_VALIDITY_MB))
-		BNX2X_ERR("BAD MCP validity signature\n");
-}
-
 /**
  * bnx2x_io_error_detected - called when PCI error is detected
  * @pdev: Pointer to PCI device
@@ -12828,6 +12828,10 @@ static pci_ers_result_t bnx2x_io_slot_reset(struct pci_dev *pdev)
 
 	if (netif_running(dev)) {
 		BNX2X_ERR("IO slot reset --> driver unload\n");
+
+		/* MCP should have been reset; Need to wait for validity */
+		bnx2x_init_shmem(bp);
+
 		if (IS_PF(bp) && SHMEM2_HAS(bp, drv_capabilities_flag)) {
 			u32 v;
 
@@ -12886,8 +12890,6 @@ static void bnx2x_io_resume(struct pci_dev *pdev)
 
 	rtnl_lock();
 
-	bnx2x_eeh_recover(bp);
-
 	bp->fw_seq = SHMEM_RD(bp, func_mb[BP_FW_MB_IDX(bp)].drv_mb_header) &
 							DRV_MSG_SEQ_NUMBER_MASK;