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@xxxxxxxxxxxxxxxxx>
---
drivers/net/virtio/main.c | 56 ++++++++++++++++++++++-----------------
1 file changed, 32 insertions(+), 24 deletions(-)
diff --git a/drivers/net/virtio/main.c b/drivers/net/virtio/main.c
index 212af542bfbe..325d39c39792 100644
--- a/drivers/net/virtio/main.c
+++ b/drivers/net/virtio/main.c
@@ -1565,32 +1565,11 @@ 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 receive_buf(struct virtnet_info *vi, struct virtnet_rq *rq,
- void *buf, unsigned int len, void **ctx,
- unsigned int *xdp_xmit,
- struct virtnet_rq_stats *stats)
+static void virtnet_receive_done(struct virtnet_info *vi, struct virtnet_rq *rq,
+ struct sk_buff *skb)
{
- struct net_device *dev = vi->dev;
- struct sk_buff *skb;
struct virtio_net_common_hdr *hdr;
-
- if (unlikely(len < vi->hdr_len + ETH_HLEN)) {
- pr_debug("%s: short packet %i\n", dev->name, len);
- DEV_STATS_INC(dev, rx_length_errors);
- virtnet_rq_free_buf(vi, rq, buf);
- return;
- }
-
- if (vi->mergeable_rx_bufs)
- skb = receive_mergeable(dev, vi, rq, buf, ctx, len, xdp_xmit,
- stats);
- else if (vi->big_packets)
- skb = receive_big(dev, vi, rq, buf, len, stats);
- else
- skb = receive_small(dev, vi, rq, buf, ctx, len, xdp_xmit, stats);
-
- if (unlikely(!skb))
- return;
+ struct net_device *dev = vi->dev;
hdr = skb_vnet_common_hdr(skb);
if (dev->features & NETIF_F_RXHASH && vi->has_rss_hash_report)
@@ -1620,6 +1599,35 @@ static void receive_buf(struct virtnet_info *vi, struct virtnet_rq *rq,
dev_kfree_skb(skb);
}
+static void receive_buf(struct virtnet_info *vi, struct virtnet_rq *rq,
+ void *buf, unsigned int len, void **ctx,
+ unsigned int *xdp_xmit,
+ struct virtnet_rq_stats *stats)
+{
+ struct net_device *dev = vi->dev;
+ struct sk_buff *skb;
+
+ if (unlikely(len < vi->hdr_len + ETH_HLEN)) {
+ pr_debug("%s: short packet %i\n", dev->name, len);
+ DEV_STATS_INC(dev, rx_length_errors);
+ virtnet_rq_free_buf(vi, rq, buf);
+ return;
+ }
+
+ if (vi->mergeable_rx_bufs)
+ skb = receive_mergeable(dev, vi, rq, buf, ctx, len, xdp_xmit,
+ stats);
+ else if (vi->big_packets)
+ skb = receive_big(dev, vi, rq, buf, len, stats);
+ else
+ skb = receive_small(dev, vi, rq, buf, ctx, len, xdp_xmit, stats);
+
+ if (unlikely(!skb))
+ return;
+
+ virtnet_receive_done(vi, rq, skb);
+}
+
/* Unlike mergeable buffers, all buffers are allocated to the
* same size, except for the headroom. For this reason we do
* not need to use mergeable_len_to_ctx here - it is enough
--
2.32.0.3.g01195cf9f
