1 files changed, 22 insertions, 73 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
index 17968244c399..019d856b1334 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c
@@ -67,8 +67,6 @@ int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
 
 	inline_thold = min(inline_thold, MAX_INLINE);
 
-	spin_lock_init(&ring->comp_lock);
-
 	tmp = size * sizeof(struct mlx4_en_tx_info);
 	ring->tx_info = vmalloc(tmp);
 	if (!ring->tx_info)
@@ -156,7 +154,7 @@ void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv,
 
 int mlx4_en_activate_tx_ring(struct mlx4_en_priv *priv,
 			     struct mlx4_en_tx_ring *ring,
-			     int cq)
+			     int cq, int user_prio)
 {
 	struct mlx4_en_dev *mdev = priv->mdev;
 	int err;
@@ -174,7 +172,7 @@ int mlx4_en_activate_tx_ring(struct mlx4_en_priv *priv,
 	ring->doorbell_qpn = ring->qp.qpn << 8;
 
 	mlx4_en_fill_qp_context(priv, ring->size, ring->stride, 1, 0, ring->qpn,
-				ring->cqn, &ring->context);
+				ring->cqn, user_prio, &ring->context);
 	if (ring->bf_enabled)
 		ring->context.usr_page = cpu_to_be32(ring->bf.uar->index);
 
@@ -317,6 +315,8 @@ static void mlx4_en_process_tx_cq(struct net_device *dev, struct mlx4_en_cq *cq)
 	int size = cq->size;
 	u32 size_mask = ring->size_mask;
 	struct mlx4_cqe *buf = cq->buf;
+	u32 packets = 0;
+	u32 bytes = 0;
 
 	if (!priv->port_up)
 		return;
@@ -345,6 +345,8 @@ static void mlx4_en_process_tx_cq(struct net_device *dev, struct mlx4_en_cq *cq)
 					priv, ring, ring_index,
 					!!((ring->cons + txbbs_skipped) &
 							ring->size));
+			packets++;
+			bytes += ring->tx_info[ring_index].nr_bytes;
 		} while (ring_index != new_index);
 
 		++cons_index;
@@ -361,13 +363,14 @@ static void mlx4_en_process_tx_cq(struct net_device *dev, struct mlx4_en_cq *cq)
 	mlx4_cq_set_ci(mcq);
 	wmb();
 	ring->cons += txbbs_skipped;
+	netdev_tx_completed_queue(ring->tx_queue, packets, bytes);
 
 	/* Wakeup Tx queue if this ring stopped it */
 	if (unlikely(ring->blocked)) {
 		if ((u32) (ring->prod - ring->cons) <=
 		     ring->size - HEADROOM - MAX_DESC_TXBBS) {
 			ring->blocked = 0;
-			netif_tx_wake_queue(netdev_get_tx_queue(dev, cq->ring));
+			netif_tx_wake_queue(ring->tx_queue);
 			priv->port_stats.wake_queue++;
 		}
 	}
@@ -377,41 +380,12 @@ void mlx4_en_tx_irq(struct mlx4_cq *mcq)
 {
 	struct mlx4_en_cq *cq = container_of(mcq, struct mlx4_en_cq, mcq);
 	struct mlx4_en_priv *priv = netdev_priv(cq->dev);
-	struct mlx4_en_tx_ring *ring = &priv->tx_ring[cq->ring];
 
-	if (!spin_trylock(&ring->comp_lock))
-		return;
 	mlx4_en_process_tx_cq(cq->dev, cq);
-	mod_timer(&cq->timer, jiffies + 1);
-	spin_unlock(&ring->comp_lock);
+	mlx4_en_arm_cq(priv, cq);
 }
 
 
-void mlx4_en_poll_tx_cq(unsigned long data)
-{
-	struct mlx4_en_cq *cq = (struct mlx4_en_cq *) data;
-	struct mlx4_en_priv *priv = netdev_priv(cq->dev);
-	struct mlx4_en_tx_ring *ring = &priv->tx_ring[cq->ring];
-	u32 inflight;
-
-	INC_PERF_COUNTER(priv->pstats.tx_poll);
-
-	if (!spin_trylock_irq(&ring->comp_lock)) {
-		mod_timer(&cq->timer, jiffies + MLX4_EN_TX_POLL_TIMEOUT);
-		return;
-	}
-	mlx4_en_process_tx_cq(cq->dev, cq);
-	inflight = (u32) (ring->prod - ring->cons - ring->last_nr_txbb);
-
-	/* If there are still packets in flight and the timer has not already
-	 * been scheduled by the Tx routine then schedule it here to guarantee
-	 * completion processing of these packets */
-	if (inflight && priv->port_up)
-		mod_timer(&cq->timer, jiffies + MLX4_EN_TX_POLL_TIMEOUT);
-
-	spin_unlock_irq(&ring->comp_lock);
-}
-
 static struct mlx4_en_tx_desc *mlx4_en_bounce_to_desc(struct mlx4_en_priv *priv,
 						      struct mlx4_en_tx_ring *ring,
 						      u32 index,
@@ -440,25 +414,6 @@ static struct mlx4_en_tx_desc *mlx4_en_bounce_to_desc(struct mlx4_en_priv *priv,
 	return ring->buf + index * TXBB_SIZE;
 }
 
-static inline void mlx4_en_xmit_poll(struct mlx4_en_priv *priv, int tx_ind)
-{
-	struct mlx4_en_cq *cq = &priv->tx_cq[tx_ind];
-	struct mlx4_en_tx_ring *ring = &priv->tx_ring[tx_ind];
-	unsigned long flags;
-
-	/* If we don't have a pending timer, set one up to catch our recent
-	   post in case the interface becomes idle */
-	if (!timer_pending(&cq->timer))
-		mod_timer(&cq->timer, jiffies + MLX4_EN_TX_POLL_TIMEOUT);
-
-	/* Poll the CQ every mlx4_en_TX_MODER_POLL packets */
-	if ((++ring->poll_cnt & (MLX4_EN_TX_POLL_MODER - 1)) == 0)
-		if (spin_trylock_irqsave(&ring->comp_lock, flags)) {
-			mlx4_en_process_tx_cq(priv->dev, cq);
-			spin_unlock_irqrestore(&ring->comp_lock, flags);
-		}
-}
-
 static int is_inline(struct sk_buff *skb, void **pfrag)
 {
 	void *ptr;
@@ -571,17 +526,16 @@ static void build_inline_wqe(struct mlx4_en_tx_desc *tx_desc, struct sk_buff *sk
 u16 mlx4_en_select_queue(struct net_device *dev, struct sk_buff *skb)
 {
 	struct mlx4_en_priv *priv = netdev_priv(dev);
-	u16 vlan_tag = 0;
+	u16 rings_p_up = priv->mdev->profile.num_tx_rings_p_up;
+	u8 up = 0;
 
-	/* If we support per priority flow control and the packet contains
-	 * a vlan tag, send the packet to the TX ring assigned to that priority
-	 */
-	if (priv->prof->rx_ppp && vlan_tx_tag_present(skb)) {
-		vlan_tag = vlan_tx_tag_get(skb);
-		return MLX4_EN_NUM_TX_RINGS + (vlan_tag >> 13);
-	}
+	if (dev->num_tc)
+		return skb_tx_hash(dev, skb);
 
-	return skb_tx_hash(dev, skb);
+	if (vlan_tx_tag_present(skb))
+		up = vlan_tx_tag_get(skb) >> VLAN_PRIO_SHIFT;
+
+	return __skb_tx_hash(dev, skb, rings_p_up) + up * rings_p_up;
 }
 
 static void mlx4_bf_copy(void __iomem *dst, unsigned long *src, unsigned bytecnt)
@@ -594,7 +548,6 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
 	struct mlx4_en_priv *priv = netdev_priv(dev);
 	struct mlx4_en_dev *mdev = priv->mdev;
 	struct mlx4_en_tx_ring *ring;
-	struct mlx4_en_cq *cq;
 	struct mlx4_en_tx_desc *tx_desc;
 	struct mlx4_wqe_data_seg *data;
 	struct skb_frag_struct *frag;
@@ -638,13 +591,10 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
 	if (unlikely(((int)(ring->prod - ring->cons)) >
 		     ring->size - HEADROOM - MAX_DESC_TXBBS)) {
 		/* every full Tx ring stops queue */
-		netif_tx_stop_queue(netdev_get_tx_queue(dev, tx_ind));
+		netif_tx_stop_queue(ring->tx_queue);
 		ring->blocked = 1;
 		priv->port_stats.queue_stopped++;
 
-		/* Use interrupts to find out when queue opened */
-		cq = &priv->tx_cq[tx_ind];
-		mlx4_en_arm_cq(priv, cq);
 		return NETDEV_TX_BUSY;
 	}
 
@@ -707,7 +657,7 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
 		priv->port_stats.tso_packets++;
 		i = ((skb->len - lso_header_size) / skb_shinfo(skb)->gso_size) +
 			!!((skb->len - lso_header_size) % skb_shinfo(skb)->gso_size);
-		ring->bytes += skb->len + (i - 1) * lso_header_size;
+		tx_info->nr_bytes = skb->len + (i - 1) * lso_header_size;
 		ring->packets += i;
 	} else {
 		/* Normal (Non LSO) packet */
@@ -715,10 +665,12 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
 			((ring->prod & ring->size) ?
 			 cpu_to_be32(MLX4_EN_BIT_DESC_OWN) : 0);
 		data = &tx_desc->data;
-		ring->bytes += max(skb->len, (unsigned int) ETH_ZLEN);
+		tx_info->nr_bytes = max_t(unsigned int, skb->len, ETH_ZLEN);
 		ring->packets++;
 
 	}
+	ring->bytes += tx_info->nr_bytes;
+	netdev_tx_sent_queue(ring->tx_queue, tx_info->nr_bytes);
 	AVG_PERF_COUNTER(priv->pstats.tx_pktsz_avg, skb->len);
 
 
@@ -792,9 +744,6 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
 		iowrite32be(ring->doorbell_qpn, ring->bf.uar->map + MLX4_SEND_DOORBELL);
 	}
 
-	/* Poll CQ here */
-	mlx4_en_xmit_poll(priv, tx_ind);
-
 	return NETDEV_TX_OK;
 
 tx_drop: