From: Eric Dumazet <edumazet@google.com>
Date: Mon, 6 Oct 2014 16:30:35 +0000 (-0700)
Subject: net/mlx4_en: remove NETDEV_TX_BUSY
X-Git-Tag: fixes-against-v3.18-rc2~144^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fe971b95c22578456ff7198537827841c726d3f7;p=pandora-kernel.git

net/mlx4_en: remove NETDEV_TX_BUSY

Drivers should avoid NETDEV_TX_BUSY as much as possible.

They should stop the tx queue before qdisc even tries to push another
packet, to avoid requeues.

For a driver supporting skb->xmit_more, this is likely to be a prereq
anyway, otherwise we could have a tx deadlock : We need to force a
doorbell if TX ring is full.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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