diff options
| author |   Erez Shitrit <erezsh@mellanox.com> | 2017-10-19 07:56:43 +0300 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-10-25 13:36:50 -0400 |
| commit | 8966e28d2e40cfc9f694bd02dabc49afb78d7160 (patch) | |
| tree | 94d3ed9ebe51f6afdbc17d07483870b5a091aeb9 /drivers/infiniband/ulp/ipoib/ipoib_verbs.c | |
| parent | IB/ipoib: Get rid of the tx_outstanding variable in all modes (diff) | |
| download | linux-dev-8966e28d2e40cfc9f694bd02dabc49afb78d7160.tar.xz linux-dev-8966e28d2e40cfc9f694bd02dabc49afb78d7160.zip | |
IB/ipoib: Use NAPI in UD/TX flows
Instead of explicit call to poll_cq of the tx ring, use the NAPI mechanism
to handle the completions of each packet that has been sent to the HW.
The next major changes were taken:
* The driver init completion function in the creation of the send CQ,
that function triggers the napi scheduling.
* The driver uses CQ for RX for both modes UD and CM, and CQ for TX
for CM and UD.
Cc: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_verbs.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c index bb64baf25309..a1ed25422b72 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_verbs.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_verbs.c @@ -156,7 +156,7 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca) }; struct ib_cq_init_attr cq_attr = {}; - int ret, size; + int ret, size, req_vec; int i; size = ipoib_recvq_size + 1; @@ -171,17 +171,21 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca) if (ret != -ENOSYS) return -ENODEV; + req_vec = (priv->port - 1) * 2; + cq_attr.cqe = size; - priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, - dev, &cq_attr); + cq_attr.comp_vector = req_vec % priv->ca->num_comp_vectors; + priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_rx_completion, NULL, + priv, &cq_attr); if (IS_ERR(priv->recv_cq)) { printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name); goto out_cm_dev_cleanup; } cq_attr.cqe = ipoib_sendq_size; - priv->send_cq = ib_create_cq(priv->ca, ipoib_send_comp_handler, NULL, - dev, &cq_attr); + cq_attr.comp_vector = (req_vec + 1) % priv->ca->num_comp_vectors; + priv->send_cq = ib_create_cq(priv->ca, ipoib_ib_tx_completion, NULL, + priv, &cq_attr); if (IS_ERR(priv->send_cq)) { printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name); goto out_free_recv_cq; @@ -208,6 +212,9 @@ int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca) goto out_free_send_cq; } + if (ib_req_notify_cq(priv->send_cq, IB_CQ_NEXT_COMP)) + goto out_free_send_cq; + for (i = 0; i < MAX_SKB_FRAGS + 1; ++i) priv->tx_sge[i].lkey = priv->pd->local_dma_lkey; |