Now, the logic of merge xdp process is simple, we can remove the
skip_xdp.
Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
---
drivers/net/virtio_net.c | 23 ++++++++++-------------
1 file changed, 10 insertions(+), 13 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 42e9927e316b..a4bb25f39f12 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1390,7 +1390,6 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
struct page *page = virt_to_head_page(buf);
int offset = buf - page_address(page);
struct sk_buff *head_skb, *curr_skb;
- struct bpf_prog *xdp_prog;
unsigned int truesize = mergeable_ctx_to_truesize(ctx);
unsigned int headroom = mergeable_ctx_to_headroom(ctx);
unsigned int tailroom = headroom ? sizeof(struct skb_shared_info) : 0;
@@ -1406,22 +1405,20 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
goto err_skb;
}
- 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) {
- head_skb = receive_mergeable_xdp(dev, vi, rq, xdp_prog, buf, ctx,
- len, xdp_xmit, stats);
+ rcu_read_lock();
+ xdp_prog = rcu_dereference(rq->xdp_prog);
+ if (xdp_prog) {
+ head_skb = receive_mergeable_xdp(dev, vi, rq, xdp_prog, buf, ctx,
+ len, xdp_xmit, stats);
+ rcu_read_unlock();
+ return head_skb;
+ }
rcu_read_unlock();
- return head_skb;
}
- rcu_read_unlock();
-skip_xdp:
head_skb = page_to_skb(vi, rq, page, offset, len, truesize, headroom);
curr_skb = head_skb;
--
2.32.0.3.g01195cf9f
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