tree 2a3871ca8287e5f197c39d170375df8fe3c93b03
parent f356fcbe12c1174713e83651b630330f8f0f8415
author Amir Vadai <amirv@mellanox.com> 1358992458 +0000
committer David S. Miller <davem@davemloft.net> 1359350064 -0500

net/mlx4_en: Fix a race when closing TX queue

There is a possible race where the TX completion handler can clean the
entire TX queue between the decision that the queue is full and actually
closing it. To avoid this situation, check again if the queue is really
full, if not, reopen the transmit and continue with sending the packet.

CC: Eric Dumazet <edumazet@google.com>

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.com>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>