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net/mlx4_en: Extend usage of napi_gro_frags 

We can call napi_gro_frags for all the received traffic regardless
of the checksum status. Specifically, received packets whose status
is CHECKSUM_NONE (and soon to be added CHECKSUM_COMPLETE)
are eligible for napi_gro_frags as well.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Shani Michaeli <shanim@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shani Michaeli 2014-11-09 13:51:52 +02:00 committed by David S. Miller
parent b00394c007
commit dd65beac48
1 changed files with 54 additions and 54 deletions
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108
drivers/net/ethernet/mellanox/mlx4/en_rx.c
View File

@ -747,60 +747,6 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
if ((cqe->status & cpu_to_be16(MLX4_CQE_STATUS_IPOK)) && if ((cqe->status & cpu_to_be16(MLX4_CQE_STATUS_IPOK)) &&
(cqe->checksum == cpu_to_be16(0xffff))) { (cqe->checksum == cpu_to_be16(0xffff))) {
ring->csum_ok++; ring->csum_ok++;
/* This packet is eligible for GRO if it is:
* - DIX Ethernet (type interpretation)
* - TCP/IP (v4)
* - without IP options
* - not an IP fragment
* - no LLS polling in progress
*/
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)
goto next;
nr = mlx4_en_complete_rx_desc(priv,
rx_desc, frags, gro_skb,
length);
if (!nr)
goto next;
skb_shinfo(gro_skb)->nr_frags = nr;
gro_skb->len = length;
gro_skb->data_len = length;
gro_skb->ip_summed = CHECKSUM_UNNECESSARY;
if (l2_tunnel)
gro_skb->csum_level = 1;
if ((cqe->vlan_my_qpn &
cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK)) &&
(dev->features & NETIF_F_HW_VLAN_CTAG_RX)) {
u16 vid = be16_to_cpu(cqe->sl_vid);
__vlan_hwaccel_put_tag(gro_skb, htons(ETH_P_8021Q), vid);
}
if (dev->features & NETIF_F_RXHASH)
skb_set_hash(gro_skb,
be32_to_cpu(cqe->immed_rss_invalid),
PKT_HASH_TYPE_L3);
skb_record_rx_queue(gro_skb, cq->ring);
skb_mark_napi_id(gro_skb, &cq->napi);
if (ring->hwtstamp_rx_filter == HWTSTAMP_FILTER_ALL) {
timestamp = mlx4_en_get_cqe_ts(cqe);
mlx4_en_fill_hwtstamps(mdev,
skb_hwtstamps(gro_skb),
timestamp);
}
napi_gro_frags(&cq->napi);
goto next;
}
/* GRO not possible, complete processing here */
ip_summed = CHECKSUM_UNNECESSARY; ip_summed = CHECKSUM_UNNECESSARY;
} else { } else {
ip_summed = CHECKSUM_NONE; ip_summed = CHECKSUM_NONE;
@ -811,6 +757,60 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
ring->csum_none++; ring->csum_none++;
} }
/* This packet is eligible for GRO if it is:
* - DIX Ethernet (type interpretation)
* - TCP/IP (v4)
* - without IP options
* - not an IP fragment
* - no LLS polling in progress
*/
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)
goto next;
nr = mlx4_en_complete_rx_desc(priv,
rx_desc, frags, gro_skb,
length);
if (!nr)
goto next;
skb_shinfo(gro_skb)->nr_frags = nr;
gro_skb->len = length;
gro_skb->data_len = length;
gro_skb->ip_summed = ip_summed;
if (l2_tunnel && ip_summed == CHECKSUM_UNNECESSARY)
gro_skb->encapsulation = 1;
if ((cqe->vlan_my_qpn &
cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK)) &&
(dev->features & NETIF_F_HW_VLAN_CTAG_RX)) {
u16 vid = be16_to_cpu(cqe->sl_vid);
__vlan_hwaccel_put_tag(gro_skb, htons(ETH_P_8021Q), vid);
}
if (dev->features & NETIF_F_RXHASH)
skb_set_hash(gro_skb,
be32_to_cpu(cqe->immed_rss_invalid),
PKT_HASH_TYPE_L3);
skb_record_rx_queue(gro_skb, cq->ring);
skb_mark_napi_id(gro_skb, &cq->napi);
if (ring->hwtstamp_rx_filter == HWTSTAMP_FILTER_ALL) {
timestamp = mlx4_en_get_cqe_ts(cqe);
mlx4_en_fill_hwtstamps(mdev,
skb_hwtstamps(gro_skb),
timestamp);
}
napi_gro_frags(&cq->napi);
goto next;
}
/* GRO not possible, complete processing here */
skb = mlx4_en_rx_skb(priv, rx_desc, frags, length); skb = mlx4_en_rx_skb(priv, rx_desc, frags, length);
if (!skb) { if (!skb) {
priv->stats.rx_dropped++; priv->stats.rx_dropped++;