On Sun, Mar 05, 2023 at 11:07:37PM +0300, Arseniy Krasnov wrote:
In case of SOCK_SEQPACKET all sk_buffs are used once - after read some
data from it, it will be removed, so user will never read rest of the
data. Thus we need to update credit parameters of the socket like whole
sk_buff is read - so call 'skb_pull()' for the whole buffer.
Fixes: 71dc9ec9ac7d ("virtio/vsock: replace virtio_vsock_pkt with sk_buff")
Signed-off-by: Arseniy Krasnov <AVKrasnov@xxxxxxxxxxxxxx>
---
net/vmw_vsock/virtio_transport_common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Maybe we could avoid this patch if we directly use pkt_len as I
suggested in the previous patch.
Thanks,
Stefano
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index 2e2a773df5c1..30b0539990ba 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -466,7 +466,6 @@ static int virtio_transport_seqpacket_do_dequeue(struct vsock_sock *vsk,
dequeued_len = err;
} else {
user_buf_len -= bytes_to_copy;
- skb_pull(skb, bytes_to_copy);
}
spin_lock_bh(&vvs->rx_lock);
@@ -484,6 +483,7 @@ static int virtio_transport_seqpacket_do_dequeue(struct vsock_sock *vsk,
msg->msg_flags |= MSG_EOR;
}
+ skb_pull(skb, skb->len);
virtio_transport_dec_rx_pkt(vvs, skb);
kfree_skb(skb);
}
--
2.25.1
