diff options
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib.h | 4 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_cm.c | 15 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_ib.c | 9 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_main.c | 10 |
4 files changed, 26 insertions, 12 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h index e188a95984b5..9a3379c49541 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib.h +++ b/drivers/infiniband/ulp/ipoib/ipoib.h @@ -377,8 +377,12 @@ struct ipoib_dev_priv { struct ipoib_rx_buf *rx_ring; struct ipoib_tx_buf *tx_ring; + /* cyclic ring variables for managing tx_ring, for UD only */ unsigned int tx_head; unsigned int tx_tail; + /* cyclic ring variables for counting overall outstanding send WRs */ + unsigned int global_tx_head; + unsigned int global_tx_tail; struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; struct ib_ud_wr tx_wr; struct ib_wc send_wc[MAX_SEND_CQE]; diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c index c59e00a0881f..9bf0fa30df28 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c @@ -756,7 +756,8 @@ void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_ return; } - if ((priv->tx_head - priv->tx_tail) == ipoib_sendq_size - 1) { + if ((priv->global_tx_head - priv->global_tx_tail) == + ipoib_sendq_size - 1) { ipoib_dbg(priv, "TX ring 0x%x full, stopping kernel net queue\n", tx->qp->qp_num); netif_stop_queue(dev); @@ -786,7 +787,7 @@ void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_ } else { netif_trans_update(dev); ++tx->tx_head; - ++priv->tx_head; + ++priv->global_tx_head; } } @@ -820,10 +821,11 @@ void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) netif_tx_lock(dev); ++tx->tx_tail; - ++priv->tx_tail; + ++priv->global_tx_tail; if (unlikely(netif_queue_stopped(dev) && - (priv->tx_head - priv->tx_tail) <= ipoib_sendq_size >> 1 && + ((priv->global_tx_head - priv->global_tx_tail) <= + ipoib_sendq_size >> 1) && test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))) netif_wake_queue(dev); @@ -1232,8 +1234,9 @@ timeout: dev_kfree_skb_any(tx_req->skb); netif_tx_lock_bh(p->dev); ++p->tx_tail; - ++priv->tx_tail; - if (unlikely(priv->tx_head - priv->tx_tail == ipoib_sendq_size >> 1) && + ++priv->global_tx_tail; + if (unlikely((priv->global_tx_head - priv->global_tx_tail) <= + ipoib_sendq_size >> 1) && netif_queue_stopped(p->dev) && test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) netif_wake_queue(p->dev); diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c index c332b4761816..da3c5315bbb5 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c @@ -407,9 +407,11 @@ static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) dev_kfree_skb_any(tx_req->skb); ++priv->tx_tail; + ++priv->global_tx_tail; if (unlikely(netif_queue_stopped(dev) && - ((priv->tx_head - priv->tx_tail) <= ipoib_sendq_size >> 1) && + ((priv->global_tx_head - priv->global_tx_tail) <= + ipoib_sendq_size >> 1) && test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))) netif_wake_queue(dev); @@ -634,7 +636,8 @@ int ipoib_send(struct net_device *dev, struct sk_buff *skb, else priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM; /* increase the tx_head after send success, but use it for queue state */ - if (priv->tx_head - priv->tx_tail == ipoib_sendq_size - 1) { + if ((priv->global_tx_head - priv->global_tx_tail) == + ipoib_sendq_size - 1) { ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n"); netif_stop_queue(dev); } @@ -662,6 +665,7 @@ int ipoib_send(struct net_device *dev, struct sk_buff *skb, rc = priv->tx_head; ++priv->tx_head; + ++priv->global_tx_head; } return rc; } @@ -807,6 +811,7 @@ int ipoib_ib_dev_stop_default(struct net_device *dev) ipoib_dma_unmap_tx(priv, tx_req); dev_kfree_skb_any(tx_req->skb); ++priv->tx_tail; + ++priv->global_tx_tail; } for (i = 0; i < ipoib_recvq_size; ++i) { diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 81b8227214f1..ceec24d45185 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -1184,9 +1184,11 @@ static void ipoib_timeout(struct net_device *dev, unsigned int txqueue) ipoib_warn(priv, "transmit timeout: latency %d msecs\n", jiffies_to_msecs(jiffies - dev_trans_start(dev))); - ipoib_warn(priv, "queue stopped %d, tx_head %u, tx_tail %u\n", - netif_queue_stopped(dev), - priv->tx_head, priv->tx_tail); + ipoib_warn(priv, + "queue stopped %d, tx_head %u, tx_tail %u, global_tx_head %u, global_tx_tail %u\n", + netif_queue_stopped(dev), priv->tx_head, priv->tx_tail, + priv->global_tx_head, priv->global_tx_tail); + /* XXX reset QP, etc. */ } @@ -1701,7 +1703,7 @@ static int ipoib_dev_init_default(struct net_device *dev) goto out_rx_ring_cleanup; } - /* priv->tx_head, tx_tail & tx_outstanding are already 0 */ + /* priv->tx_head, tx_tail and global_tx_tail/head are already 0 */ if (ipoib_transport_dev_init(dev, priv->ca)) { pr_warn("%s: ipoib_transport_dev_init failed\n", |