qlcnic: Refactor interrupt coalescing code for all adapters.

o Refactor configuration of interrupt coalescing parameters for
  all supported adapters.
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qlcnic/qlcnic.h

@@ -369,6 +369,7 @@ struct qlcnic_rx_buffer {
  */
 #define QLCNIC_INTR_COAL_TYPE_RX		1
 #define QLCNIC_INTR_COAL_TYPE_TX		2
+#define QLCNIC_INTR_COAL_TYPE_RX_TX		3
 
 #define QLCNIC_DEF_INTR_COALESCE_RX_TIME_US	3
 #define QLCNIC_DEF_INTR_COALESCE_RX_PACKETS	256
@@ -1740,7 +1741,8 @@ struct qlcnic_hardware_ops {
 	int (*change_macvlan) (struct qlcnic_adapter *, u8*, u16, u8);
 	void (*napi_enable) (struct qlcnic_adapter *);
 	void (*napi_disable) (struct qlcnic_adapter *);
-	void (*config_intr_coal) (struct qlcnic_adapter *);
+	int (*config_intr_coal) (struct qlcnic_adapter *,
+				 struct ethtool_coalesce *);
 	int (*config_rss) (struct qlcnic_adapter *, int);
 	int (*config_hw_lro) (struct qlcnic_adapter *, int);
 	int (*config_loopback) (struct qlcnic_adapter *, u8);
@@ -1936,9 +1938,10 @@ static inline void qlcnic_napi_disable(struct qlcnic_adapter *adapter)
 	adapter->ahw->hw_ops->napi_disable(adapter);
 }
 
-static inline void qlcnic_config_intr_coalesce(struct qlcnic_adapter *adapter)
+static inline int qlcnic_config_intr_coalesce(struct qlcnic_adapter *adapter,
+					      struct ethtool_coalesce *ethcoal)
 {
-	adapter->ahw->hw_ops->config_intr_coal(adapter);
+	return adapter->ahw->hw_ops->config_intr_coal(adapter, ethcoal);
 }
 
 static inline int qlcnic_config_rss(struct qlcnic_adapter *adapter, int enable)

drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c

@@ -2102,37 +2102,130 @@ int qlcnic_83xx_get_mac_address(struct qlcnic_adapter *adapter, u8 *mac,
 	return err;
 }
 
-void qlcnic_83xx_config_intr_coal(struct qlcnic_adapter *adapter)
+static int qlcnic_83xx_set_rx_intr_coal(struct qlcnic_adapter *adapter)
 {
-	int err;
-	u16 temp;
-	struct qlcnic_cmd_args cmd;
 	struct qlcnic_nic_intr_coalesce *coal = &adapter->ahw->coal;
+	struct qlcnic_cmd_args cmd;
+	u16 temp;
+	int err;
 
-	if (adapter->recv_ctx->state == QLCNIC_HOST_CTX_STATE_FREED)
-		return;
+	err = qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_CONFIG_INTR_COAL);
+	if (err)
+		return err;
+
+	temp = adapter->recv_ctx->context_id;
+	cmd.req.arg[1] = QLCNIC_INTR_COAL_TYPE_RX | temp << 16;
+	temp = coal->rx_time_us;
+	cmd.req.arg[2] = coal->rx_packets | temp << 16;
+	cmd.req.arg[3] = coal->flag;
+
+	err = qlcnic_issue_cmd(adapter, &cmd);
+	if (err != QLCNIC_RCODE_SUCCESS)
+		netdev_err(adapter->netdev,
+			   "failed to set interrupt coalescing parameters\n");
+
+	qlcnic_free_mbx_args(&cmd);
+
+	return err;
+}
+
+static int qlcnic_83xx_set_tx_intr_coal(struct qlcnic_adapter *adapter)
+{
+	struct qlcnic_nic_intr_coalesce *coal = &adapter->ahw->coal;
+	struct qlcnic_cmd_args cmd;
+	u16 temp;
+	int err;
 
 	err = qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_CONFIG_INTR_COAL);
 	if (err)
-		return;
+		return err;
 
-	if (coal->type == QLCNIC_INTR_COAL_TYPE_RX) {
-		temp = adapter->recv_ctx->context_id;
-		cmd.req.arg[1] = QLCNIC_INTR_COAL_TYPE_RX | temp << 16;
-		temp = coal->rx_time_us;
-		cmd.req.arg[2] = coal->rx_packets | temp << 16;
-	} else if (coal->type == QLCNIC_INTR_COAL_TYPE_TX) {
-		temp = adapter->tx_ring->ctx_id;
-		cmd.req.arg[1] = QLCNIC_INTR_COAL_TYPE_TX | temp << 16;
-		temp = coal->tx_time_us;
-		cmd.req.arg[2] = coal->tx_packets | temp << 16;
-	}
+	temp = adapter->tx_ring->ctx_id;
+	cmd.req.arg[1] = QLCNIC_INTR_COAL_TYPE_TX | temp << 16;
+	temp = coal->tx_time_us;
+	cmd.req.arg[2] = coal->tx_packets | temp << 16;
 	cmd.req.arg[3] = coal->flag;
+
 	err = qlcnic_issue_cmd(adapter, &cmd);
 	if (err != QLCNIC_RCODE_SUCCESS)
-		dev_info(&adapter->pdev->dev,
-			 "Failed to send interrupt coalescence parameters\n");
+		netdev_err(adapter->netdev,
+			   "failed to set interrupt coalescing  parameters\n");
+
 	qlcnic_free_mbx_args(&cmd);
+
+	return err;
+}
+
+int qlcnic_83xx_set_rx_tx_intr_coal(struct qlcnic_adapter *adapter)
+{
+	int err = 0;
+
+	err = qlcnic_83xx_set_rx_intr_coal(adapter);
+	if (err)
+		netdev_err(adapter->netdev,
+			   "failed to set Rx coalescing parameters\n");
+
+	err = qlcnic_83xx_set_tx_intr_coal(adapter);
+	if (err)
+		netdev_err(adapter->netdev,
+			   "failed to set Tx coalescing parameters\n");
+
+	return err;
+}
+
+int qlcnic_83xx_config_intr_coal(struct qlcnic_adapter *adapter,
+				 struct ethtool_coalesce *ethcoal)
+{
+	struct qlcnic_nic_intr_coalesce *coal = &adapter->ahw->coal;
+	u32 rx_coalesce_usecs, rx_max_frames;
+	u32 tx_coalesce_usecs, tx_max_frames;
+	int err;
+
+	if (adapter->recv_ctx->state == QLCNIC_HOST_CTX_STATE_FREED)
+		return -EIO;
+
+	tx_coalesce_usecs = ethcoal->tx_coalesce_usecs;
+	tx_max_frames = ethcoal->tx_max_coalesced_frames;
+	rx_coalesce_usecs = ethcoal->rx_coalesce_usecs;
+	rx_max_frames = ethcoal->rx_max_coalesced_frames;
+	coal->flag = QLCNIC_INTR_DEFAULT;
+
+	if ((coal->rx_time_us == rx_coalesce_usecs) &&
+	    (coal->rx_packets == rx_max_frames)) {
+		coal->type = QLCNIC_INTR_COAL_TYPE_TX;
+		coal->tx_time_us = tx_coalesce_usecs;
+		coal->tx_packets = tx_max_frames;
+	} else if ((coal->tx_time_us == tx_coalesce_usecs) &&
+		   (coal->tx_packets == tx_max_frames)) {
+		coal->type = QLCNIC_INTR_COAL_TYPE_RX;
+		coal->rx_time_us = rx_coalesce_usecs;
+		coal->rx_packets = rx_max_frames;
+	} else {
+		coal->type = QLCNIC_INTR_COAL_TYPE_RX_TX;
+		coal->rx_time_us = rx_coalesce_usecs;
+		coal->rx_packets = rx_max_frames;
+		coal->tx_time_us = tx_coalesce_usecs;
+		coal->tx_packets = tx_max_frames;
+	}
+
+	switch (coal->type) {
+	case QLCNIC_INTR_COAL_TYPE_RX:
+		err = qlcnic_83xx_set_rx_intr_coal(adapter);
+		break;
+	case QLCNIC_INTR_COAL_TYPE_TX:
+		err = qlcnic_83xx_set_tx_intr_coal(adapter);
+		break;
+	case QLCNIC_INTR_COAL_TYPE_RX_TX:
+		err = qlcnic_83xx_set_rx_tx_intr_coal(adapter);
+		break;
+	default:
+		err = -EINVAL;
+		netdev_err(adapter->netdev,
+			   "Invalid Interrupt coalescing type\n");
+		break;
+	}
+
+	return err;
 }
 
 static void qlcnic_83xx_handle_link_aen(struct qlcnic_adapter *adapter,

drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h

@@ -547,7 +547,6 @@ int qlcnic_83xx_wrt_reg_indirect(struct qlcnic_adapter *, ulong, u32);
 int qlcnic_83xx_nic_set_promisc(struct qlcnic_adapter *, u32);
 int qlcnic_83xx_config_hw_lro(struct qlcnic_adapter *, int);
 int qlcnic_83xx_config_rss(struct qlcnic_adapter *, int);
-int qlcnic_83xx_config_intr_coalesce(struct qlcnic_adapter *);
 void qlcnic_83xx_change_l2_filter(struct qlcnic_adapter *, u64 *, u16);
 int qlcnic_83xx_get_pci_info(struct qlcnic_adapter *, struct qlcnic_pci_info *);
 int qlcnic_83xx_set_nic_info(struct qlcnic_adapter *, struct qlcnic_info *);
@@ -577,7 +576,9 @@ int qlcnic_83xx_alloc_mbx_args(struct qlcnic_cmd_args *,
 void qlcnic_free_mbx_args(struct qlcnic_cmd_args *);
 void qlcnic_set_npar_data(struct qlcnic_adapter *, const struct qlcnic_info *,
 			  struct qlcnic_info *);
-void qlcnic_83xx_config_intr_coal(struct qlcnic_adapter *);
+int qlcnic_83xx_config_intr_coal(struct qlcnic_adapter *,
+				 struct ethtool_coalesce *);
+int qlcnic_83xx_set_rx_tx_intr_coal(struct qlcnic_adapter *);
 int qlcnic_83xx_get_port_info(struct qlcnic_adapter *);
 void qlcnic_83xx_enable_mbx_interrupt(struct qlcnic_adapter *);
 void qlcnic_83xx_disable_mbx_intr(struct qlcnic_adapter *);

drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c

@@ -1495,9 +1495,7 @@ static int qlcnic_set_intr_coalesce(struct net_device *netdev,
 			struct ethtool_coalesce *ethcoal)
 {
 	struct qlcnic_adapter *adapter = netdev_priv(netdev);
-	struct qlcnic_nic_intr_coalesce *coal;
-	u32 rx_coalesce_usecs, rx_max_frames;
-	u32 tx_coalesce_usecs, tx_max_frames;
+	int err;
 
 	if (!test_bit(__QLCNIC_DEV_UP, &adapter->state))
 		return -EINVAL;
@@ -1507,82 +1505,31 @@ static int qlcnic_set_intr_coalesce(struct net_device *netdev,
 	* unsupported parameters are set.
 	*/
 	if (ethcoal->rx_coalesce_usecs > 0xffff ||
-		ethcoal->rx_max_coalesced_frames > 0xffff ||
-		ethcoal->tx_coalesce_usecs > 0xffff ||
-		ethcoal->tx_max_coalesced_frames > 0xffff ||
-		ethcoal->rx_coalesce_usecs_irq ||
-		ethcoal->rx_max_coalesced_frames_irq ||
-		ethcoal->tx_coalesce_usecs_irq ||
-		ethcoal->tx_max_coalesced_frames_irq ||
-		ethcoal->stats_block_coalesce_usecs ||
-		ethcoal->use_adaptive_rx_coalesce ||
-		ethcoal->use_adaptive_tx_coalesce ||
-		ethcoal->pkt_rate_low ||
-		ethcoal->rx_coalesce_usecs_low ||
-		ethcoal->rx_max_coalesced_frames_low ||
-		ethcoal->tx_coalesce_usecs_low ||
-		ethcoal->tx_max_coalesced_frames_low ||
-		ethcoal->pkt_rate_high ||
-		ethcoal->rx_coalesce_usecs_high ||
-		ethcoal->rx_max_coalesced_frames_high ||
-		ethcoal->tx_coalesce_usecs_high ||
-		ethcoal->tx_max_coalesced_frames_high)
+	    ethcoal->rx_max_coalesced_frames > 0xffff ||
+	    ethcoal->tx_coalesce_usecs > 0xffff ||
+	    ethcoal->tx_max_coalesced_frames > 0xffff ||
+	    ethcoal->rx_coalesce_usecs_irq ||
+	    ethcoal->rx_max_coalesced_frames_irq ||
+	    ethcoal->tx_coalesce_usecs_irq ||
+	    ethcoal->tx_max_coalesced_frames_irq ||
+	    ethcoal->stats_block_coalesce_usecs ||
+	    ethcoal->use_adaptive_rx_coalesce ||
+	    ethcoal->use_adaptive_tx_coalesce ||
+	    ethcoal->pkt_rate_low ||
+	    ethcoal->rx_coalesce_usecs_low ||
+	    ethcoal->rx_max_coalesced_frames_low ||
+	    ethcoal->tx_coalesce_usecs_low ||
+	    ethcoal->tx_max_coalesced_frames_low ||
+	    ethcoal->pkt_rate_high ||
+	    ethcoal->rx_coalesce_usecs_high ||
+	    ethcoal->rx_max_coalesced_frames_high ||
+	    ethcoal->tx_coalesce_usecs_high ||
+	    ethcoal->tx_max_coalesced_frames_high)
 		return -EINVAL;
 
-	coal = &adapter->ahw->coal;
+	err = qlcnic_config_intr_coalesce(adapter, ethcoal);
 
-	if (qlcnic_83xx_check(adapter)) {
-		if (!ethcoal->tx_coalesce_usecs ||
-		    !ethcoal->tx_max_coalesced_frames ||
-		    !ethcoal->rx_coalesce_usecs ||
-		    !ethcoal->rx_max_coalesced_frames) {
-			coal->flag = QLCNIC_INTR_DEFAULT;
-			coal->type = QLCNIC_INTR_COAL_TYPE_RX;
-			coal->rx_time_us = QLCNIC_DEF_INTR_COALESCE_RX_TIME_US;
-			coal->rx_packets = QLCNIC_DEF_INTR_COALESCE_RX_PACKETS;
-			coal->tx_time_us = QLCNIC_DEF_INTR_COALESCE_TX_TIME_US;
-			coal->tx_packets = QLCNIC_DEF_INTR_COALESCE_TX_PACKETS;
-		} else {
-			tx_coalesce_usecs = ethcoal->tx_coalesce_usecs;
-			tx_max_frames = ethcoal->tx_max_coalesced_frames;
-			rx_coalesce_usecs = ethcoal->rx_coalesce_usecs;
-			rx_max_frames = ethcoal->rx_max_coalesced_frames;
-			coal->flag = 0;
-
-			if ((coal->rx_time_us == rx_coalesce_usecs) &&
-			    (coal->rx_packets == rx_max_frames)) {
-				coal->type = QLCNIC_INTR_COAL_TYPE_TX;
-				coal->tx_time_us = tx_coalesce_usecs;
-				coal->tx_packets = tx_max_frames;
-			} else if ((coal->tx_time_us == tx_coalesce_usecs) &&
-				   (coal->tx_packets == tx_max_frames)) {
-				coal->type = QLCNIC_INTR_COAL_TYPE_RX;
-				coal->rx_time_us = rx_coalesce_usecs;
-				coal->rx_packets = rx_max_frames;
-			} else {
-				coal->type = QLCNIC_INTR_COAL_TYPE_RX;
-				coal->rx_time_us = rx_coalesce_usecs;
-				coal->rx_packets = rx_max_frames;
-				coal->tx_time_us = tx_coalesce_usecs;
-				coal->tx_packets = tx_max_frames;
-			}
-		}
-	} else {
-		if (!ethcoal->rx_coalesce_usecs ||
-		    !ethcoal->rx_max_coalesced_frames) {
-			coal->flag = QLCNIC_INTR_DEFAULT;
-			coal->rx_time_us = QLCNIC_DEF_INTR_COALESCE_RX_TIME_US;
-			coal->rx_packets = QLCNIC_DEF_INTR_COALESCE_RX_PACKETS;
-		} else {
-			coal->flag = 0;
-			coal->rx_time_us = ethcoal->rx_coalesce_usecs;
-			coal->rx_packets = ethcoal->rx_max_coalesced_frames;
-		}
-	}
-
-	qlcnic_config_intr_coalesce(adapter);
-
-	return 0;
+	return err;
 }
 
 static int qlcnic_get_intr_coalesce(struct net_device *netdev,

drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c

@@ -755,10 +755,7 @@ int qlcnic_82xx_read_phys_port_id(struct qlcnic_adapter *adapter)
 	return 0;
 }
 
-/*
- * Send the interrupt coalescing parameter set by ethtool to the card.
- */
-void qlcnic_82xx_config_intr_coalesce(struct qlcnic_adapter *adapter)
+int qlcnic_82xx_set_rx_coalesce(struct qlcnic_adapter *adapter)
 {
 	struct qlcnic_nic_req req;
 	int rv;
@@ -780,6 +777,28 @@ void qlcnic_82xx_config_intr_coalesce(struct qlcnic_adapter *adapter)
 	if (rv != 0)
 		dev_err(&adapter->netdev->dev,
 			"Could not send interrupt coalescing parameters\n");
+
+	return rv;
+}
+
+/* Send the interrupt coalescing parameter set by ethtool to the card. */
+int qlcnic_82xx_config_intr_coalesce(struct qlcnic_adapter *adapter,
+				     struct ethtool_coalesce *ethcoal)
+{
+	struct qlcnic_nic_intr_coalesce *coal = &adapter->ahw->coal;
+	int rv;
+
+	coal->flag = QLCNIC_INTR_DEFAULT;
+	coal->rx_time_us = ethcoal->rx_coalesce_usecs;
+	coal->rx_packets = ethcoal->rx_max_coalesced_frames;
+
+	rv = qlcnic_82xx_set_rx_coalesce(adapter);
+
+	if (rv)
+		netdev_err(adapter->netdev,
+			   "Failed to set Rx coalescing parametrs\n");
+
+	return rv;
 }
 
 #define QLCNIC_ENABLE_IPV4_LRO		BIT_0

drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.h

@@ -171,7 +171,9 @@ int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter,
 void qlcnic_82xx_get_beacon_state(struct qlcnic_adapter *);
 void qlcnic_82xx_change_filter(struct qlcnic_adapter *adapter,
 			       u64 *uaddr, u16 vlan_id);
-void qlcnic_82xx_config_intr_coalesce(struct qlcnic_adapter *adapter);
+int qlcnic_82xx_config_intr_coalesce(struct qlcnic_adapter *,
+				     struct ethtool_coalesce *);
+int qlcnic_82xx_set_rx_coalesce(struct qlcnic_adapter *);
 int qlcnic_82xx_config_rss(struct qlcnic_adapter *adapter, int);
 void qlcnic_82xx_config_ipaddr(struct qlcnic_adapter *adapter,
 			       __be32, int);

drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c

@@ -1701,6 +1701,33 @@ static void qlcnic_get_lro_mss_capability(struct qlcnic_adapter *adapter)
 	}
 }
 
+static int qlcnic_config_def_intr_coalesce(struct qlcnic_adapter *adapter)
+{
+	struct qlcnic_hardware_context *ahw = adapter->ahw;
+	int err;
+
+	/* Initialize interrupt coalesce parameters */
+	ahw->coal.flag = QLCNIC_INTR_DEFAULT;
+
+	if (qlcnic_83xx_check(adapter)) {
+		ahw->coal.type = QLCNIC_INTR_COAL_TYPE_RX_TX;
+		ahw->coal.tx_time_us = QLCNIC_DEF_INTR_COALESCE_TX_TIME_US;
+		ahw->coal.tx_packets = QLCNIC_DEF_INTR_COALESCE_TX_PACKETS;
+		ahw->coal.rx_time_us = QLCNIC_DEF_INTR_COALESCE_RX_TIME_US;
+		ahw->coal.rx_packets = QLCNIC_DEF_INTR_COALESCE_RX_PACKETS;
+
+		err = qlcnic_83xx_set_rx_tx_intr_coal(adapter);
+	} else {
+		ahw->coal.type = QLCNIC_INTR_COAL_TYPE_RX;
+		ahw->coal.rx_time_us = QLCNIC_DEF_INTR_COALESCE_RX_TIME_US;
+		ahw->coal.rx_packets = QLCNIC_DEF_INTR_COALESCE_RX_PACKETS;
+
+		err = qlcnic_82xx_set_rx_coalesce(adapter);
+	}
+
+	return err;
+}
+
 int __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 {
 	int ring;
@@ -1733,7 +1760,7 @@ int __qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
 	if (adapter->drv_sds_rings > 1)
 		qlcnic_config_rss(adapter, 1);
 
-	qlcnic_config_intr_coalesce(adapter);
+	qlcnic_config_def_intr_coalesce(adapter);
 
 	if (netdev->features & NETIF_F_LRO)
 		qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
@@ -1901,7 +1928,6 @@ void qlcnic_diag_free_res(struct net_device *netdev, int drv_sds_rings)
 
 static int qlcnic_alloc_adapter_resources(struct qlcnic_adapter *adapter)
 {
-	struct qlcnic_hardware_context *ahw = adapter->ahw;
 	int err = 0;
 
 	adapter->recv_ctx = kzalloc(sizeof(struct qlcnic_recv_context),
@@ -1910,15 +1936,7 @@ static int qlcnic_alloc_adapter_resources(struct qlcnic_adapter *adapter)
 		err = -ENOMEM;
 		goto err_out;
 	}
-	/* Initialize interrupt coalesce parameters */
-	ahw->coal.flag = QLCNIC_INTR_DEFAULT;
-	ahw->coal.type = QLCNIC_INTR_COAL_TYPE_RX;
-	ahw->coal.rx_time_us = QLCNIC_DEF_INTR_COALESCE_RX_TIME_US;
-	ahw->coal.rx_packets = QLCNIC_DEF_INTR_COALESCE_RX_PACKETS;
-	if (qlcnic_83xx_check(adapter)) {
-		ahw->coal.tx_time_us = QLCNIC_DEF_INTR_COALESCE_TX_TIME_US;
-		ahw->coal.tx_packets = QLCNIC_DEF_INTR_COALESCE_TX_PACKETS;
-	}
+
 	/* clear stats */
 	memset(&adapter->stats, 0, sizeof(adapter->stats));
 err_out: