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| author | Xuan Zhuo <xuanzhuo@linux.alibaba.com> | 2023-05-08 14:14:15 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-05-09 19:44:27 -0700 |
| commit | aef76506bc64bbf567490cbe437c26f1aadeee90 (patch) | |
| tree | 45ae6943d6114ae2dbe80ac3a788004427d4a6b6 /drivers/net/virtio_net.c | |
| parent | 7af70fc169bd254aea780115b0f355956f84902b (diff) | |
| download | lwn-aef76506bc64bbf567490cbe437c26f1aadeee90.tar.gz lwn-aef76506bc64bbf567490cbe437c26f1aadeee90.zip | |
virtio_net: small: remove skip_xdp
Because the skb build code is not shared between xdp and non-xdp, and
the xdp code in receive_small() is simpler, so "skip_xdp" is not needed.
We can remove it.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/virtio_net.c')
| -rw-r--r-- | drivers/net/virtio_net.c | 26 |
1 files changed, 12 insertions, 14 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index b26d907b5ba5..a0a4f35b965b 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1028,13 +1028,12 @@ static struct sk_buff *receive_small(struct net_device *dev, unsigned int *xdp_xmit, struct virtnet_rq_stats *stats) { - struct sk_buff *skb; - struct bpf_prog *xdp_prog; unsigned int xdp_headroom = (unsigned long)ctx; struct page *page = virt_to_head_page(buf); unsigned int header_offset; unsigned int headroom; unsigned int buflen; + struct sk_buff *skb; len -= vi->hdr_len; stats->bytes += len; @@ -1046,22 +1045,21 @@ static struct sk_buff *receive_small(struct net_device *dev, goto err; } - if (likely(!vi->xdp_enabled)) { - xdp_prog = NULL; - goto skip_xdp; - } + if (unlikely(vi->xdp_enabled)) { + struct bpf_prog *xdp_prog; - rcu_read_lock(); - xdp_prog = rcu_dereference(rq->xdp_prog); - if (xdp_prog) { - skb = receive_small_xdp(dev, vi, rq, xdp_prog, buf, xdp_headroom, - len, xdp_xmit, stats); + rcu_read_lock(); + xdp_prog = rcu_dereference(rq->xdp_prog); + if (xdp_prog) { + skb = receive_small_xdp(dev, vi, rq, xdp_prog, buf, + xdp_headroom, len, xdp_xmit, + stats); + rcu_read_unlock(); + return skb; + } rcu_read_unlock(); - return skb; } - rcu_read_unlock(); -skip_xdp: header_offset = VIRTNET_RX_PAD + xdp_headroom; headroom = vi->hdr_len + header_offset; buflen = SKB_DATA_ALIGN(GOOD_PACKET_LEN + headroom) + |