IPoIB: Add some likely/unlikely annotations in hot path

Signed-off-by: Eli Cohen <eli@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

2 files changed, 3 insertions, 3 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index 240befdf90dc..f426a69d9a43 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -332,7 +332,7 @@ void ipoib_send(struct net_device *dev, struct sk_buff *skb,
         struct ipoib_tx_buf *tx_req;
         dma_addr_t addr;
 
-        if (skb->len > dev->mtu + INFINIBAND_ALEN) {
+        if (unlikely(skb->len > dev->mtu + INFINIBAND_ALEN)) {
                 ipoib_warn(priv, "packet len %d (> %d) too long to send, dropping\n",
                            skb->len, dev->mtu + INFINIBAND_ALEN);
                 ++priv->stats.tx_dropped;
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 867d62742054..1eaf00e9862c 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -620,7 +620,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
         struct ipoib_neigh *neigh;
         unsigned long flags;
 
-        if (!spin_trylock_irqsave(&priv->tx_lock, flags))
+        if (unlikely(!spin_trylock_irqsave(&priv->tx_lock, flags)))
                 return NETDEV_TX_LOCKED;
 
         /*
@@ -633,7 +633,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 return NETDEV_TX_BUSY;
         }
 
-        if (skb->dst && skb->dst->neighbour) {
+        if (likely(skb->dst && skb->dst->neighbour)) {
                 if (unlikely(!*to_ipoib_neigh(skb->dst->neighbour))) {
                         ipoib_path_lookup(skb, dev);
                         goto out;