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author | 2017-10-19 07:56:43 +0300 | |
---|---|---|
committer | 2017-10-25 13:36:50 -0400 | |
commit | 8966e28d2e40cfc9f694bd02dabc49afb78d7160 (patch) | |
tree | 94d3ed9ebe51f6afdbc17d07483870b5a091aeb9 /drivers/infiniband/ulp/ipoib/ipoib_main.c | |
parent | IB/ipoib: Get rid of the tx_outstanding variable in all modes (diff) | |
download | linux-8966e28d2e40cfc9f694bd02dabc49afb78d7160.tar.gz linux-8966e28d2e40cfc9f694bd02dabc49afb78d7160.tar.bz2 linux-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 'drivers/infiniband/ulp/ipoib/ipoib_main.c')
-rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_main.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 0d6b4053cdf7..12b7f911f0e5 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -1616,13 +1616,29 @@ static void ipoib_neigh_hash_uninit(struct net_device *dev) wait_for_completion(&priv->ntbl.deleted); } +static void ipoib_napi_add(struct net_device *dev) +{ + struct ipoib_dev_priv *priv = ipoib_priv(dev); + + netif_napi_add(dev, &priv->recv_napi, ipoib_rx_poll, IPOIB_NUM_WC); + netif_napi_add(dev, &priv->send_napi, ipoib_tx_poll, MAX_SEND_CQE); +} + +static void ipoib_napi_del(struct net_device *dev) +{ + struct ipoib_dev_priv *priv = ipoib_priv(dev); + + netif_napi_del(&priv->recv_napi); + netif_napi_del(&priv->send_napi); +} + static void ipoib_dev_uninit_default(struct net_device *dev) { struct ipoib_dev_priv *priv = ipoib_priv(dev); ipoib_transport_dev_cleanup(dev); - netif_napi_del(&priv->napi); + ipoib_napi_del(dev); ipoib_cm_dev_cleanup(dev); @@ -1637,7 +1653,7 @@ static int ipoib_dev_init_default(struct net_device *dev) { struct ipoib_dev_priv *priv = ipoib_priv(dev); - netif_napi_add(dev, &priv->napi, ipoib_poll, NAPI_POLL_WEIGHT); + ipoib_napi_add(dev); /* Allocate RX/TX "rings" to hold queued skbs */ priv->rx_ring = kzalloc(ipoib_recvq_size * sizeof *priv->rx_ring, @@ -1665,8 +1681,6 @@ static int ipoib_dev_init_default(struct net_device *dev) priv->dev->dev_addr[2] = (priv->qp->qp_num >> 8) & 0xff; priv->dev->dev_addr[3] = (priv->qp->qp_num) & 0xff; - timer_setup(&priv->poll_timer, ipoib_ib_tx_timer_func, 0); - return 0; out_tx_ring_cleanup: @@ -1676,7 +1690,7 @@ out_rx_ring_cleanup: kfree(priv->rx_ring); out: - netif_napi_del(&priv->napi); + ipoib_napi_del(dev); return -ENOMEM; } |