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| author | Eric Dumazet <edumazet@google.com> | 2012-09-28 07:53:26 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-10-01 17:01:57 -0400 |
| commit | 8112ec3b8722680251aecdcc23dfd81aa7af6340 (patch) | |
| tree | 29c45d88297bc0e21b1716426f9a048e7d783707 | |
| parent | 60769a5dcd8755715c7143b4571d5c44f01796f1 (diff) | |
| download | blackbird-op-linux-8112ec3b8722680251aecdcc23dfd81aa7af6340.tar.gz blackbird-op-linux-8112ec3b8722680251aecdcc23dfd81aa7af6340.zip | |
mlx4: dont orphan skbs in mlx4_en_xmit()
After commit e22979d96a55d (mlx4_en: Moving to Interrupts for TX
completions) we no longer need to orphan skbs in mlx4_en_xmit()
since skb wont stay a long time in TX ring before their release.
Orphaning skbs in ndo_start_xmit() should be avoided as much as
possible, since it breaks TCP Small Queue or other flow control
mechanisms (per socket limits)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Yevgeny Petrilin <yevgenyp@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_tx.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_tx.c b/drivers/net/ethernet/mellanox/mlx4/en_tx.c index 10bba09c44ea..c10e3a6de09f 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_tx.c @@ -712,10 +712,6 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev) if (bounce) tx_desc = mlx4_en_bounce_to_desc(priv, ring, index, desc_size); - /* Run destructor before passing skb to HW */ - if (likely(!skb_shared(skb))) - skb_orphan(skb); - if (ring->bf_enabled && desc_size <= MAX_BF && !bounce && !vlan_tag) { *(__be32 *) (&tx_desc->ctrl.vlan_tag) |= cpu_to_be32(ring->doorbell_qpn); op_own |= htonl((bf_index & 0xffff) << 8); |
