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virtio_net: separate receive_buf

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This commit separates the function receive_buf(), then we wrap the logic
of handling the skb to an independent function virtnet_receive_done().
The subsequent commit will reuse it.

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://patch.msgid.link/20240708112537.96291-5-xuanzhuo@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Xuan Zhuo 2024-07-08 19:25:31 +08:00 committed by Jakub Kicinski
parent 391aa2aad0
commit c86c120fde
1 changed files with 35 additions and 27 deletions
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62
drivers/net/virtio_net.c
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@ -1968,6 +1968,40 @@ static void virtio_skb_set_hash(const struct virtio_net_hdr_v1_hash *hdr_hash,
skb_set_hash(skb, __le32_to_cpu(hdr_hash->hash_value), rss_hash_type);
}
static void virtnet_receive_done(struct virtnet_info *vi, struct receive_queue *rq,
struct sk_buff *skb, u8 flags)
{
struct virtio_net_common_hdr *hdr;
struct net_device *dev = vi->dev;
hdr = skb_vnet_common_hdr(skb);
if (dev->features & NETIF_F_RXHASH && vi->has_rss_hash_report)
virtio_skb_set_hash(&hdr->hash_v1_hdr, skb);
if (flags & VIRTIO_NET_HDR_F_DATA_VALID)
skb->ip_summed = CHECKSUM_UNNECESSARY;
if (virtio_net_hdr_to_skb(skb, &hdr->hdr,
virtio_is_little_endian(vi->vdev))) {
net_warn_ratelimited("%s: bad gso: type: %u, size: %u\n",
dev->name, hdr->hdr.gso_type,
hdr->hdr.gso_size);
goto frame_err;
}
skb_record_rx_queue(skb, vq2rxq(rq->vq));
skb->protocol = eth_type_trans(skb, dev);
pr_debug("Receiving skb proto 0x%04x len %i type %i\n",
ntohs(skb->protocol), skb->len, skb->pkt_type);
napi_gro_receive(&rq->napi, skb);
return;
frame_err:
DEV_STATS_INC(dev, rx_frame_errors);
dev_kfree_skb(skb);
}
static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq,
void *buf, unsigned int len, void **ctx,
unsigned int *xdp_xmit,
@ -1975,7 +2009,6 @@ static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq,
{
struct net_device *dev = vi->dev;
struct sk_buff *skb;
struct virtio_net_common_hdr *hdr;
u8 flags;
if (unlikely(len < vi->hdr_len + ETH_HLEN)) {
@ -2005,32 +2038,7 @@ static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq,
if (unlikely(!skb))
return;
hdr = skb_vnet_common_hdr(skb);
if (dev->features & NETIF_F_RXHASH && vi->has_rss_hash_report)
virtio_skb_set_hash(&hdr->hash_v1_hdr, skb);
if (flags & VIRTIO_NET_HDR_F_DATA_VALID)
skb->ip_summed = CHECKSUM_UNNECESSARY;
if (virtio_net_hdr_to_skb(skb, &hdr->hdr,
virtio_is_little_endian(vi->vdev))) {
net_warn_ratelimited("%s: bad gso: type: %u, size: %u\n",
dev->name, hdr->hdr.gso_type,
hdr->hdr.gso_size);
goto frame_err;
}
skb_record_rx_queue(skb, vq2rxq(rq->vq));
skb->protocol = eth_type_trans(skb, dev);
pr_debug("Receiving skb proto 0x%04x len %i type %i\n",
ntohs(skb->protocol), skb->len, skb->pkt_type);
napi_gro_receive(&rq->napi, skb);
return;
frame_err:
DEV_STATS_INC(dev, rx_frame_errors);
dev_kfree_skb(skb);
virtnet_receive_done(vi, rq, skb, flags);
}
/* Unlike mergeable buffers, all buffers are allocated to the