Merge branch 'be2net-next'

Sathya Perla says:

====================
be2net: patch set

v2 changes: add a new line after variable declaration in patch 12.

***
Patch 1 adds a few new log messages to help debugging in failure cases.

Patch 2 uses new macros for parsing RX/TX completions and TX wrbs to
help shorten the lines.

Patch 3 adds a description for the RX counter rx_input_fifo_overflow_drop.

Patch 4 adds TX completion error statistics reporting via ethtool.

Patch 5 adds a dma_mapping_error counter and its reporting via ethtool.

Patch 6 fixes up log messages in the Lancer FW download path.

Patch 7 replaces gotos with direct return statements.

Patch 8 cleans up be_change_mtu() code by using a new macro BE_MAX_MTU

Patch 9 makes be_cmd_get_regs() routine to return an integer status
similar to other FW cmd routines in be_cmds.c

Patch 10 gets rid of TX budget as enforcing a budget on TX completion
processing in NAPI is neither suggested nor it provides a performance benefit.

Patch 11 defines and uses a new macro for_all_tx_queues_on_eq() similar
to the RX processing code.

Patch 12 queries max_tx_qs from the FW for BE3 super-nic profiles.
For those profiles, the driver cannot assume a constant BE3_MAX_TX_QS value,
as the value may change for each function.

Please consider applying this patch set to the net-next tree. Thanks!
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be.h

@@ -86,6 +86,8 @@ static inline char *nic_name(struct pci_dev *pdev)
 
 #define BE_MAX_JUMBO_FRAME_SIZE	9018
 #define BE_MIN_MTU		256
+#define BE_MAX_MTU              (BE_MAX_JUMBO_FRAME_SIZE -	\
+				 (ETH_HLEN + ETH_FCS_LEN))
 
 #define BE_NUM_VLANS_SUPPORTED	64
 #define BE_MAX_EQD		128u
@@ -112,7 +114,6 @@ static inline char *nic_name(struct pci_dev *pdev)
 #define MAX_ROCE_EQS		5
 #define MAX_MSIX_VECTORS	32
 #define MIN_MSIX_VECTORS	1
-#define BE_TX_BUDGET		256
 #define BE_NAPI_WEIGHT		64
 #define MAX_RX_POST		BE_NAPI_WEIGHT /* Frags posted at a time */
 #define RX_FRAGS_REFILL_WM	(RX_Q_LEN - MAX_RX_POST)
@@ -198,7 +199,6 @@ struct be_eq_obj {
 
 	u8 idx;			/* array index */
 	u8 msix_idx;
-	u16 tx_budget;
 	u16 spurious_intr;
 	struct napi_struct napi;
 	struct be_adapter *adapter;
@@ -248,6 +248,13 @@ struct be_tx_stats {
 	ulong tx_jiffies;
 	u32 tx_stops;
 	u32 tx_drv_drops;	/* pkts dropped by driver */
+	/* the error counters are described in be_ethtool.c */
+	u32 tx_hdr_parse_err;
+	u32 tx_dma_err;
+	u32 tx_tso_err;
+	u32 tx_spoof_check_err;
+	u32 tx_qinq_err;
+	u32 tx_internal_parity_err;
 	struct u64_stats_sync sync;
 	struct u64_stats_sync sync_compl;
 };
@@ -316,6 +323,7 @@ struct be_rx_obj {
 struct be_drv_stats {
 	u32 be_on_die_temperature;
 	u32 eth_red_drops;
+	u32 dma_map_errors;
 	u32 rx_drops_no_pbuf;
 	u32 rx_drops_no_txpb;
 	u32 rx_drops_no_erx_descr;
@@ -613,6 +621,10 @@ extern const struct ethtool_ops be_ethtool_ops;
 	for (i = eqo->idx, rxo = &adapter->rx_obj[i]; i < adapter->num_rx_qs;\
 		 i += adapter->num_evt_qs, rxo += adapter->num_evt_qs)
 
+#define for_all_tx_queues_on_eq(adapter, eqo, txo, i)			\
+	for (i = eqo->idx, txo = &adapter->tx_obj[i]; i < adapter->num_tx_qs;\
+		i += adapter->num_evt_qs, txo += adapter->num_evt_qs)
+
 #define is_mcc_eqo(eqo)			(eqo->idx == 0)
 #define mcc_eqo(adapter)		(&adapter->eq_obj[0])
 
@@ -661,6 +673,18 @@ static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
 			amap_mask(sizeof(((_struct *)0)->field)),	\
 			AMAP_BIT_OFFSET(_struct, field))
 
+#define GET_RX_COMPL_V0_BITS(field, ptr)				\
+		AMAP_GET_BITS(struct amap_eth_rx_compl_v0, field, ptr)
+
+#define GET_RX_COMPL_V1_BITS(field, ptr)				\
+		AMAP_GET_BITS(struct amap_eth_rx_compl_v1, field, ptr)
+
+#define GET_TX_COMPL_BITS(field, ptr)					\
+		AMAP_GET_BITS(struct amap_eth_tx_compl, field, ptr)
+
+#define SET_TX_WRB_HDR_BITS(field, ptr, val)				\
+		AMAP_SET_BITS(struct amap_eth_hdr_wrb, field, ptr, val)
+
 #define be_dws_cpu_to_le(wrb, len)	swap_dws(wrb, len)
 #define be_dws_le_to_cpu(wrb, len)	swap_dws(wrb, len)
 static inline void swap_dws(void *wrb, int len)

drivers/net/ethernet/emulex/benet/be_cmds.c

@@ -1681,17 +1681,17 @@ int be_cmd_get_reg_len(struct be_adapter *adapter, u32 *log_size)
 	return status;
 }
 
-void be_cmd_get_regs(struct be_adapter *adapter, u32 buf_len, void *buf)
+int be_cmd_get_regs(struct be_adapter *adapter, u32 buf_len, void *buf)
 {
 	struct be_dma_mem get_fat_cmd;
 	struct be_mcc_wrb *wrb;
 	struct be_cmd_req_get_fat *req;
 	u32 offset = 0, total_size, buf_size,
 				log_offset = sizeof(u32), payload_len;
-	int status;
+	int status = 0;
 
 	if (buf_len == 0)
-		return;
+		return -EIO;
 
 	total_size = buf_len;
 
@@ -1700,10 +1700,9 @@ void be_cmd_get_regs(struct be_adapter *adapter, u32 buf_len, void *buf)
 					      get_fat_cmd.size,
 					      &get_fat_cmd.dma);
 	if (!get_fat_cmd.va) {
-		status = -ENOMEM;
 		dev_err(&adapter->pdev->dev,
 		"Memory allocation failure while retrieving FAT data\n");
-		return;
+		return -ENOMEM;
 	}
 
 	spin_lock_bh(&adapter->mcc_lock);
@@ -1746,6 +1745,7 @@ void be_cmd_get_regs(struct be_adapter *adapter, u32 buf_len, void *buf)
 	pci_free_consistent(adapter->pdev, get_fat_cmd.size,
 			    get_fat_cmd.va, get_fat_cmd.dma);
 	spin_unlock_bh(&adapter->mcc_lock);
+	return status;
 }
 
 /* Uses synchronous mcc */
@@ -1771,6 +1771,7 @@ int be_cmd_get_fw_ver(struct be_adapter *adapter)
 	status = be_mcc_notify_wait(adapter);
 	if (!status) {
 		struct be_cmd_resp_get_fw_version *resp = embedded_payload(wrb);
+
 		strcpy(adapter->fw_ver, resp->firmware_version_string);
 		strcpy(adapter->fw_on_flash, resp->fw_on_flash_version_string);
 	}
@@ -2018,6 +2019,9 @@ int be_cmd_query_fw_cfg(struct be_adapter *adapter)
 		adapter->function_mode = le32_to_cpu(resp->function_mode);
 		adapter->function_caps = le32_to_cpu(resp->function_caps);
 		adapter->asic_rev = le32_to_cpu(resp->asic_revision) & 0xFF;
+		dev_info(&adapter->pdev->dev,
+			 "FW config: function_mode=0x%x, function_caps=0x%x\n",
+			 adapter->function_mode, adapter->function_caps);
 	}
 
 	mutex_unlock(&adapter->mbox_lock);

drivers/net/ethernet/emulex/benet/be_cmds.h

@@ -2101,7 +2101,7 @@ int be_cmd_get_die_temperature(struct be_adapter *adapter);
 int be_cmd_get_cntl_attributes(struct be_adapter *adapter);
 int be_cmd_req_native_mode(struct be_adapter *adapter);
 int be_cmd_get_reg_len(struct be_adapter *adapter, u32 *log_size);
-void be_cmd_get_regs(struct be_adapter *adapter, u32 buf_len, void *buf);
+int be_cmd_get_regs(struct be_adapter *adapter, u32 buf_len, void *buf);
 int be_cmd_get_fn_privileges(struct be_adapter *adapter, u32 *privilege,
 			     u32 domain);
 int be_cmd_set_fn_privileges(struct be_adapter *adapter, u32 privileges,

drivers/net/ethernet/emulex/benet/be_ethtool.c

@@ -78,6 +78,11 @@ static const struct be_ethtool_stat et_stats[] = {
 	 * fifo must never overflow.
 	 */
 	{DRVSTAT_INFO(rxpp_fifo_overflow_drop)},
+	/* Received packets dropped when the RX block runs out of space in
+	 * one of its input FIFOs. This could happen due a long burst of
+	 * minimum-sized (64b) frames in the receive path.
+	 * This counter may also be erroneously incremented rarely.
+	 */
 	{DRVSTAT_INFO(rx_input_fifo_overflow_drop)},
 	{DRVSTAT_INFO(rx_ip_checksum_errs)},
 	{DRVSTAT_INFO(rx_tcp_checksum_errs)},
@@ -114,6 +119,8 @@ static const struct be_ethtool_stat et_stats[] = {
 	 * is more than 9018 bytes
 	 */
 	{DRVSTAT_INFO(rx_drops_mtu)},
+	/* Number of dma mapping errors */
+	{DRVSTAT_INFO(dma_map_errors)},
 	/* Number of packets dropped due to random early drop function */
 	{DRVSTAT_INFO(eth_red_drops)},
 	{DRVSTAT_INFO(be_on_die_temperature)},
@@ -152,6 +159,34 @@ static const struct be_ethtool_stat et_rx_stats[] = {
  */
 static const struct be_ethtool_stat et_tx_stats[] = {
 	{DRVSTAT_TX_INFO(tx_compl)}, /* If moving this member see above note */
+	/* This counter is incremented when the HW encounters an error while
+	 * parsing the packet header of an outgoing TX request. This counter is
+	 * applicable only for BE2, BE3 and Skyhawk based adapters.
+	 */
+	{DRVSTAT_TX_INFO(tx_hdr_parse_err)},
+	/* This counter is incremented when an error occurs in the DMA
+	 * operation associated with the TX request from the host to the device.
+	 */
+	{DRVSTAT_TX_INFO(tx_dma_err)},
+	/* This counter is incremented when MAC or VLAN spoof checking is
+	 * enabled on the interface and the TX request fails the spoof check
+	 * in HW.
+	 */
+	{DRVSTAT_TX_INFO(tx_spoof_check_err)},
+	/* This counter is incremented when the HW encounters an error while
+	 * performing TSO offload. This counter is applicable only for Lancer
+	 * adapters.
+	 */
+	{DRVSTAT_TX_INFO(tx_tso_err)},
+	/* This counter is incremented when the HW detects Q-in-Q style VLAN
+	 * tagging in a packet and such tagging is not expected on the outgoing
+	 * interface. This counter is applicable only for Lancer adapters.
+	 */
+	{DRVSTAT_TX_INFO(tx_qinq_err)},
+	/* This counter is incremented when the HW detects parity errors in the
+	 * packet data. This counter is applicable only for Lancer adapters.
+	 */
+	{DRVSTAT_TX_INFO(tx_internal_parity_err)},
 	{DRVSTAT_TX_INFO(tx_bytes)},
 	{DRVSTAT_TX_INFO(tx_pkts)},
 	/* Number of skbs queued for trasmission by the driver */

drivers/net/ethernet/emulex/benet/be_hw.h

@@ -315,6 +315,18 @@ struct be_eth_hdr_wrb {
 	u32 dw[4];
 };
 
+/********* Tx Compl Status Encoding *********/
+#define BE_TX_COMP_HDR_PARSE_ERR	0x2
+#define BE_TX_COMP_NDMA_ERR		0x3
+#define BE_TX_COMP_ACL_ERR		0x5
+
+#define LANCER_TX_COMP_LSO_ERR			0x1
+#define LANCER_TX_COMP_HSW_DROP_MAC_ERR		0x3
+#define LANCER_TX_COMP_HSW_DROP_VLAN_ERR	0x5
+#define LANCER_TX_COMP_QINQ_ERR			0x7
+#define LANCER_TX_COMP_PARITY_ERR		0xb
+#define LANCER_TX_COMP_DMA_ERR			0xd
+
 /* TX Compl Queue Descriptor */
 
 /* Pseudo amap definition for eth_tx_compl in which each bit of the