diff options
| author |   Arseniy Krasnov <avkrasnov@sberdevices.ru> | 2023-03-14 14:08:20 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2023-03-16 17:28:23 +0000 |
| commit | 8daaf39f7f6ef53a11817f6a11ec104016c3545f (patch) | |
| tree | 3f1bfdd54bb5e517746ad096ecbd04d1f2314050 /net/vmw_vsock | |
| parent | virtio/vsock: remove redundant 'skb_pull()' call (diff) | |
| download | wireguard-linux-8daaf39f7f6ef53a11817f6a11ec104016c3545f.tar.xz wireguard-linux-8daaf39f7f6ef53a11817f6a11ec104016c3545f.zip | |
virtio/vsock: don't drop skbuff on copy failure
This returns behaviour of SOCK_STREAM read as before skbuff usage. When
copying to user fails current skbuff won't be dropped, but returned to
sockets's queue. Technically instead of 'skb_dequeue()', 'skb_peek()' is
called and when skbuff becomes empty, it is removed from queue by
'__skb_unlink()'.
Fixes: 71dc9ec9ac7d ("virtio/vsock: replace virtio_vsock_pkt with sk_buff")
Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Bobby Eshleman <bobby.eshleman@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/vmw_vsock')
| -rw-r--r-- | net/vmw_vsock/virtio_transport_common.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c index 9a411475e201..6564192e7f20 100644 --- a/net/vmw_vsock/virtio_transport_common.c +++ b/net/vmw_vsock/virtio_transport_common.c @@ -364,7 +364,7 @@ virtio_transport_stream_do_dequeue(struct vsock_sock *vsk, spin_lock_bh(&vvs->rx_lock); while (total < len && !skb_queue_empty(&vvs->rx_queue)) { - skb = __skb_dequeue(&vvs->rx_queue); + skb = skb_peek(&vvs->rx_queue); bytes = len - total; if (bytes > skb->len) @@ -388,9 +388,8 @@ virtio_transport_stream_do_dequeue(struct vsock_sock *vsk, u32 pkt_len = le32_to_cpu(virtio_vsock_hdr(skb)->len); virtio_transport_dec_rx_pkt(vvs, pkt_len); + __skb_unlink(skb, &vvs->rx_queue); consume_skb(skb); - } else { - __skb_queue_head(&vvs->rx_queue, skb); } } |