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path: root/drivers/net/mlx4/en_tx.c
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Diffstat (limited to 'drivers/net/mlx4/en_tx.c')
-rw-r--r--drivers/net/mlx4/en_tx.c112
1 files changed, 36 insertions, 76 deletions
diff --git a/drivers/net/mlx4/en_tx.c b/drivers/net/mlx4/en_tx.c
index e5c98a98ad3..5dc7466ad03 100644
--- a/drivers/net/mlx4/en_tx.c
+++ b/drivers/net/mlx4/en_tx.c
@@ -68,15 +68,15 @@ int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
tmp = size * sizeof(struct mlx4_en_tx_info);
ring->tx_info = vmalloc(tmp);
if (!ring->tx_info) {
- mlx4_err(mdev, "Failed allocating tx_info ring\n");
+ en_err(priv, "Failed allocating tx_info ring\n");
return -ENOMEM;
}
- mlx4_dbg(DRV, priv, "Allocated tx_info ring at addr:%p size:%d\n",
+ en_dbg(DRV, priv, "Allocated tx_info ring at addr:%p size:%d\n",
ring->tx_info, tmp);
ring->bounce_buf = kmalloc(MAX_DESC_SIZE, GFP_KERNEL);
if (!ring->bounce_buf) {
- mlx4_err(mdev, "Failed allocating bounce buffer\n");
+ en_err(priv, "Failed allocating bounce buffer\n");
err = -ENOMEM;
goto err_tx;
}
@@ -85,31 +85,31 @@ int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
err = mlx4_alloc_hwq_res(mdev->dev, &ring->wqres, ring->buf_size,
2 * PAGE_SIZE);
if (err) {
- mlx4_err(mdev, "Failed allocating hwq resources\n");
+ en_err(priv, "Failed allocating hwq resources\n");
goto err_bounce;
}
err = mlx4_en_map_buffer(&ring->wqres.buf);
if (err) {
- mlx4_err(mdev, "Failed to map TX buffer\n");
+ en_err(priv, "Failed to map TX buffer\n");
goto err_hwq_res;
}
ring->buf = ring->wqres.buf.direct.buf;
- mlx4_dbg(DRV, priv, "Allocated TX ring (addr:%p) - buf:%p size:%d "
- "buf_size:%d dma:%llx\n", ring, ring->buf, ring->size,
- ring->buf_size, (unsigned long long) ring->wqres.buf.direct.map);
+ en_dbg(DRV, priv, "Allocated TX ring (addr:%p) - buf:%p size:%d "
+ "buf_size:%d dma:%llx\n", ring, ring->buf, ring->size,
+ ring->buf_size, (unsigned long long) ring->wqres.buf.direct.map);
err = mlx4_qp_reserve_range(mdev->dev, 1, 1, &ring->qpn);
if (err) {
- mlx4_err(mdev, "Failed reserving qp for tx ring.\n");
+ en_err(priv, "Failed reserving qp for tx ring.\n");
goto err_map;
}
err = mlx4_qp_alloc(mdev->dev, ring->qpn, &ring->qp);
if (err) {
- mlx4_err(mdev, "Failed allocating qp %d\n", ring->qpn);
+ en_err(priv, "Failed allocating qp %d\n", ring->qpn);
goto err_reserve;
}
ring->qp.event = mlx4_en_sqp_event;
@@ -135,7 +135,7 @@ void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv,
struct mlx4_en_tx_ring *ring)
{
struct mlx4_en_dev *mdev = priv->mdev;
- mlx4_dbg(DRV, priv, "Destroying tx ring, qpn: %d\n", ring->qpn);
+ en_dbg(DRV, priv, "Destroying tx ring, qpn: %d\n", ring->qpn);
mlx4_qp_remove(mdev->dev, &ring->qp);
mlx4_qp_free(mdev->dev, &ring->qp);
@@ -274,12 +274,12 @@ int mlx4_en_free_tx_buf(struct net_device *dev, struct mlx4_en_tx_ring *ring)
/* Skip last polled descriptor */
ring->cons += ring->last_nr_txbb;
- mlx4_dbg(DRV, priv, "Freeing Tx buf - cons:0x%x prod:0x%x\n",
+ en_dbg(DRV, priv, "Freeing Tx buf - cons:0x%x prod:0x%x\n",
ring->cons, ring->prod);
if ((u32) (ring->prod - ring->cons) > ring->size) {
if (netif_msg_tx_err(priv))
- mlx4_warn(priv->mdev, "Tx consumer passed producer!\n");
+ en_warn(priv, "Tx consumer passed producer!\n");
return 0;
}
@@ -292,39 +292,11 @@ int mlx4_en_free_tx_buf(struct net_device *dev, struct mlx4_en_tx_ring *ring)
}
if (cnt)
- mlx4_dbg(DRV, priv, "Freed %d uncompleted tx descriptors\n", cnt);
+ en_dbg(DRV, priv, "Freed %d uncompleted tx descriptors\n", cnt);
return cnt;
}
-void mlx4_en_set_prio_map(struct mlx4_en_priv *priv, u16 *prio_map, u32 ring_num)
-{
- int block = 8 / ring_num;
- int extra = 8 - (block * ring_num);
- int num = 0;
- u16 ring = 1;
- int prio;
-
- if (ring_num == 1) {
- for (prio = 0; prio < 8; prio++)
- prio_map[prio] = 0;
- return;
- }
-
- for (prio = 0; prio < 8; prio++) {
- if (extra && (num == block + 1)) {
- ring++;
- num = 0;
- extra--;
- } else if (!extra && (num == block)) {
- ring++;
- num = 0;
- }
- prio_map[prio] = ring;
- mlx4_dbg(DRV, priv, " prio:%d --> ring:%d\n", prio, ring);
- num++;
- }
-}
static void mlx4_en_process_tx_cq(struct net_device *dev, struct mlx4_en_cq *cq)
{
@@ -386,18 +358,8 @@ static void mlx4_en_process_tx_cq(struct net_device *dev, struct mlx4_en_cq *cq)
if (unlikely(ring->blocked)) {
if ((u32) (ring->prod - ring->cons) <=
ring->size - HEADROOM - MAX_DESC_TXBBS) {
-
- /* TODO: support multiqueue netdevs. Currently, we block
- * when *any* ring is full. Note that:
- * - 2 Tx rings can unblock at the same time and call
- * netif_wake_queue(), which is OK since this
- * operation is idempotent.
- * - We might wake the queue just after another ring
- * stopped it. This is no big deal because the next
- * transmission on that ring would stop the queue.
- */
ring->blocked = 0;
- netif_wake_queue(dev);
+ netif_tx_wake_queue(netdev_get_tx_queue(dev, cq->ring));
priv->port_stats.wake_queue++;
}
}
@@ -539,7 +501,6 @@ static int get_real_size(struct sk_buff *skb, struct net_device *dev,
int *lso_header_size)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
- struct mlx4_en_dev *mdev = priv->mdev;
int real_size;
if (skb_is_gso(skb)) {
@@ -553,14 +514,14 @@ static int get_real_size(struct sk_buff *skb, struct net_device *dev,
real_size += DS_SIZE;
else {
if (netif_msg_tx_err(priv))
- mlx4_warn(mdev, "Non-linear headers\n");
+ en_warn(priv, "Non-linear headers\n");
dev_kfree_skb_any(skb);
return 0;
}
}
if (unlikely(*lso_header_size > MAX_LSO_HDR_SIZE)) {
if (netif_msg_tx_err(priv))
- mlx4_warn(mdev, "LSO header size too big\n");
+ en_warn(priv, "LSO header size too big\n");
dev_kfree_skb_any(skb);
return 0;
}
@@ -617,21 +578,20 @@ static void build_inline_wqe(struct mlx4_en_tx_desc *tx_desc, struct sk_buff *sk
tx_desc->ctrl.fence_size = (real_size / 16) & 0x3f;
}
-static int get_vlan_info(struct mlx4_en_priv *priv, struct sk_buff *skb,
- u16 *vlan_tag)
+u16 mlx4_en_select_queue(struct net_device *dev, struct sk_buff *skb)
{
- int tx_ind;
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ u16 vlan_tag = 0;
- /* Obtain VLAN information if present */
- if (priv->vlgrp && vlan_tx_tag_present(skb)) {
- *vlan_tag = vlan_tx_tag_get(skb);
- /* Set the Tx ring to use according to vlan priority */
- tx_ind = priv->tx_prio_map[*vlan_tag >> 13];
- } else {
- *vlan_tag = 0;
- tx_ind = 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 && priv->vlgrp && vlan_tx_tag_present(skb)) {
+ vlan_tag = vlan_tx_tag_get(skb);
+ return MLX4_EN_NUM_TX_RINGS + (vlan_tag >> 13);
}
- return tx_ind;
+
+ return skb_tx_hash(dev, skb);
}
int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -651,7 +611,7 @@ int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
dma_addr_t dma;
u32 index;
__be32 op_own;
- u16 vlan_tag;
+ u16 vlan_tag = 0;
int i;
int lso_header_size;
void *fragptr;
@@ -669,20 +629,21 @@ int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
nr_txbb = desc_size / TXBB_SIZE;
if (unlikely(nr_txbb > MAX_DESC_TXBBS)) {
if (netif_msg_tx_err(priv))
- mlx4_warn(mdev, "Oversized header or SG list\n");
+ en_warn(priv, "Oversized header or SG list\n");
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
- tx_ind = get_vlan_info(priv, skb, &vlan_tag);
+ tx_ind = skb->queue_mapping;
ring = &priv->tx_ring[tx_ind];
+ if (priv->vlgrp && vlan_tx_tag_present(skb))
+ vlan_tag = vlan_tx_tag_get(skb);
/* Check available TXBBs And 2K spare for prefetch */
if (unlikely(((int)(ring->prod - ring->cons)) >
ring->size - HEADROOM - MAX_DESC_TXBBS)) {
- /* every full Tx ring stops queue.
- * TODO: implement multi-queue support (per-queue stop) */
- netif_stop_queue(dev);
+ /* every full Tx ring stops queue */
+ netif_tx_stop_queue(netdev_get_tx_queue(dev, tx_ind));
ring->blocked = 1;
priv->port_stats.queue_stopped++;
@@ -695,7 +656,7 @@ int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
/* Now that we know what Tx ring to use */
if (unlikely(!priv->port_up)) {
if (netif_msg_tx_err(priv))
- mlx4_warn(mdev, "xmit: port down!\n");
+ en_warn(priv, "xmit: port down!\n");
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
@@ -819,7 +780,6 @@ int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
/* Ring doorbell! */
wmb();
writel(ring->doorbell_qpn, mdev->uar_map + MLX4_SEND_DOORBELL);
- dev->trans_start = jiffies;
/* Poll CQ here */
mlx4_en_xmit_poll(priv, tx_ind);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-12 20:22:22 +0000