From 8112ec3b8722680251aecdcc23dfd81aa7af6340 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 28 Sep 2012 07:53:26 +0000 Subject: [PATCH] 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 Acked-by: Yevgeny Petrilin Cc: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_tx.c | 4 ---- 1 file changed, 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); -- 2.20.1