mlx4_en: Moving to work with GRO
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/mlx4/en_rx.c b/drivers/net/mlx4/en_rx.c
index e2126c7..cb7ff00 100644
--- a/drivers/net/mlx4/en_rx.c
+++ b/drivers/net/mlx4/en_rx.c
@@ -42,18 +42,6 @@
#include "mlx4_en.h"
-static int mlx4_en_get_frag_header(struct skb_frag_struct *frags, void **mac_hdr,
- void **ip_hdr, void **tcpudp_hdr,
- u64 *hdr_flags, void *priv)
-{
- *mac_hdr = page_address(frags->page) + frags->page_offset;
- *ip_hdr = *mac_hdr + ETH_HLEN;
- *tcpudp_hdr = (struct tcphdr *)(*ip_hdr + sizeof(struct iphdr));
- *hdr_flags = LRO_IPV4 | LRO_TCP;
-
- return 0;
-}
-
static int mlx4_en_alloc_frag(struct mlx4_en_priv *priv,
struct mlx4_en_rx_desc *rx_desc,
struct skb_frag_struct *skb_frags,
@@ -312,24 +300,6 @@
}
ring->buf = ring->wqres.buf.direct.buf;
- /* Configure lro mngr */
- memset(&ring->lro, 0, sizeof(struct net_lro_mgr));
- ring->lro.dev = priv->dev;
- ring->lro.features = LRO_F_NAPI;
- ring->lro.frag_align_pad = NET_IP_ALIGN;
- ring->lro.ip_summed = CHECKSUM_UNNECESSARY;
- ring->lro.ip_summed_aggr = CHECKSUM_UNNECESSARY;
- ring->lro.max_desc = MLX4_EN_MAX_LRO_DESCRIPTORS;
- ring->lro.max_aggr = MAX_SKB_FRAGS;
- ring->lro.lro_arr = kcalloc(MLX4_EN_MAX_LRO_DESCRIPTORS,
- sizeof(struct net_lro_desc),
- GFP_KERNEL);
- if (!ring->lro.lro_arr) {
- en_err(priv, "Failed to allocate lro array\n");
- goto err_map;
- }
- ring->lro.get_frag_header = mlx4_en_get_frag_header;
-
return 0;
err_map:
@@ -412,7 +382,6 @@
{
struct mlx4_en_dev *mdev = priv->mdev;
- kfree(ring->lro.lro_arr);
mlx4_en_unmap_buffer(&ring->wqres.buf);
mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size + TXBB_SIZE);
vfree(ring->rx_info);
@@ -563,7 +532,6 @@
struct mlx4_cqe *cqe;
struct mlx4_en_rx_ring *ring = &priv->rx_ring[cq->ring];
struct skb_frag_struct *skb_frags;
- struct skb_frag_struct lro_frags[MLX4_EN_MAX_RX_FRAGS];
struct mlx4_en_rx_desc *rx_desc;
struct sk_buff *skb;
int index;
@@ -623,37 +591,33 @@
* - TCP/IP (v4)
* - without IP options
* - not an IP fragment */
- if (mlx4_en_can_lro(cqe->status) &&
- dev->features & NETIF_F_LRO) {
+ if (dev->features & NETIF_F_GRO) {
+ struct sk_buff *gro_skb = napi_get_frags(&cq->napi);
nr = mlx4_en_complete_rx_desc(
priv, rx_desc,
- skb_frags, lro_frags,
+ skb_frags, skb_shinfo(gro_skb)->frags,
ring->page_alloc, length);
if (!nr)
goto next;
+ skb_shinfo(gro_skb)->nr_frags = nr;
+ gro_skb->len = length;
+ gro_skb->data_len = length;
+ gro_skb->truesize += length;
+ gro_skb->ip_summed = CHECKSUM_UNNECESSARY;
+
if (priv->vlgrp && (cqe->vlan_my_qpn &
- cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK))) {
- lro_vlan_hwaccel_receive_frags(
- &ring->lro, lro_frags,
- length, length,
- priv->vlgrp,
- be16_to_cpu(cqe->sl_vid),
- NULL, 0);
- } else
- lro_receive_frags(&ring->lro,
- lro_frags,
- length,
- length,
- NULL, 0);
+ cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK)))
+ vlan_gro_frags(&cq->napi, priv->vlgrp, be16_to_cpu(cqe->sl_vid));
+ else
+ napi_gro_frags(&cq->napi);
goto next;
}
/* LRO not possible, complete processing here */
ip_summed = CHECKSUM_UNNECESSARY;
- INC_PERF_COUNTER(priv->pstats.lro_misses);
} else {
ip_summed = CHECKSUM_NONE;
priv->port_stats.rx_chksum_none++;
@@ -694,14 +658,10 @@
if (++polled == budget) {
/* We are here because we reached the NAPI budget -
* flush only pending LRO sessions */
- lro_flush_all(&ring->lro);
goto out;
}
}
- /* If CQ is empty flush all LRO sessions unconditionally */
- lro_flush_all(&ring->lro);
-
out:
AVG_PERF_COUNTER(priv->pstats.rx_coal_avg, polled);
mlx4_cq_set_ci(&cq->mcq);