net/mlx4_en: fix spurious timestamping callbacks
authorEric Dumazet <edumazet@google.com>
Sat, 23 Apr 2016 18:35:46 +0000 (11:35 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 19 May 2016 00:06:37 +0000 (17:06 -0700)
commit828255b591768b4e5a762df21a0133065ddcb44b
tree561398b1c929cce3804c822ebd034b1af43a8016
parent0633185047d91174ee2cbc8f1bd59e75e3c45ccd
net/mlx4_en: fix spurious timestamping callbacks

[ Upstream commit fc96256c906362e845d848d0f6a6354450059e81 ]

When multiple skb are TX-completed in a row, we might incorrectly keep
a timestamp of a prior skb and cause extra work.

Fixes: ec693d47010e8 ("net/mlx4_en: Add HW timestamping (TS) support")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/ethernet/mellanox/mlx4/en_tx.c