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net/mlx4_en: call gro handler for encapsulated frames

Browse source 
In order to use the native GRO handling of encapsulated protocols on
mlx4, we need to call napi_gro_receive() instead of netif_receive_skb()
unless busy polling is in action.

While we are at it, rename mlx4_en_cq_ll_polling() to
mlx4_en_cq_busy_polling()

Tested with GRE tunnel : GRO aggregation is now performed on the
ethernet device instead of being done later on gre device.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Amir Vadai <amirv@mellanox.com>
Cc: Jerry Chu <hkchu@google.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Acked-By: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2014-01-09 10:30:13 -08:00 committed by David S. Miller
parent d10dbad2aa
commit e6a7675829
2 changed files with 7 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/net/ethernet/mellanox/mlx4/en_rx.c
View file

@ -724,7 +724,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
* - not an IP fragment
* - no LLS polling in progress
*/
if (!mlx4_en_cq_ll_polling(cq) &&
if (!mlx4_en_cq_busy_polling(cq) &&
(dev->features & NETIF_F_GRO)) {
struct sk_buff *gro_skb = napi_get_frags(&cq->napi);
if (!gro_skb)
@ -816,8 +816,10 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
skb_mark_napi_id(skb, &cq->napi);
/* Push it up the stack */
netif_receive_skb(skb);
if (!mlx4_en_cq_busy_polling(cq))
napi_gro_receive(&cq->napi, skb);
else
netif_receive_skb(skb);
next:
for (nr = 0; nr < priv->num_frags; nr++)

4
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
View file

@ -661,7 +661,7 @@ static inline bool mlx4_en_cq_unlock_poll(struct mlx4_en_cq *cq)
}
/* true if a socket is polling, even if it did not get the lock */
static inline bool mlx4_en_cq_ll_polling(struct mlx4_en_cq *cq)
static inline bool mlx4_en_cq_busy_polling(struct mlx4_en_cq *cq)
{
WARN_ON(!(cq->state & MLX4_CQ_LOCKED));
return cq->state & CQ_USER_PEND;
@ -691,7 +691,7 @@ static inline bool mlx4_en_cq_unlock_poll(struct mlx4_en_cq *cq)
return false;
}
static inline bool mlx4_en_cq_ll_polling(struct mlx4_en_cq *cq)
static inline bool mlx4_en_cq_busy_polling(struct mlx4_en_cq *cq)
{
return false;
}