diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/bnx2x_main.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c index ae62b67aa597..6c042a72d6cc 100644 --- a/drivers/net/bnx2x_main.c +++ b/drivers/net/bnx2x_main.c @@ -11428,9 +11428,12 @@ static netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev) if (unlikely(bnx2x_tx_avail(fp) < MAX_SKB_FRAGS + 3)) { netif_tx_stop_queue(txq); - /* We want bnx2x_tx_int to "see" the updated tx_bd_prod - if we put Tx into XOFF state. */ + + /* paired memory barrier is in bnx2x_tx_int(), we have to keep + * ordering of set_bit() in netif_tx_stop_queue() and read of + * fp->bd_tx_cons */ smp_mb(); + fp->eth_q_stats.driver_xoff++; if (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3) netif_tx_wake_queue(txq); |