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virtio/vsock: check SO_RCVLOWAT before wake up reader 

This adds extra condition to wake up data reader: do it only when number
of readable bytes >= SO_RCVLOWAT. Otherwise, there is no sense to kick
user,because it will wait until SO_RCVLOWAT bytes will be dequeued. This
check is performed in vsock_data_ready().

Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Arseniy Krasnov 2022-08-19 05:39:24 +00:00 committed by Paolo Abeni
parent f2fdcf67ac
commit 39f1ed33a4
1 changed files with 1 additions and 1 deletions
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2
net/vmw_vsock/virtio_transport_common.c
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@ -1081,7 +1081,7 @@ virtio_transport_recv_connected(struct sock *sk,
switch (le16_to_cpu(pkt->hdr.op)) {
case VIRTIO_VSOCK_OP_RW:
virtio_transport_recv_enqueue(vsk, pkt);
sk->sk_data_ready(sk);
vsock_data_ready(sk);
return err;
case VIRTIO_VSOCK_OP_CREDIT_REQUEST:
virtio_transport_send_credit_update(vsk);