net/mlx4_en: remove NETDEV_TX_BUSY

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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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Eric Dumazet 2014-10-06 09:30:35 -07:00 • committed by David S. Miller

parent 377421662a

commit fe971b95c2

1 changed files with 24 additions and 24 deletions

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48

drivers/net/ethernet/mellanox/mlx4/en_tx.c

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