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| author | Arseniy Krasnov <avkrasnov@salutedevices.com> | 2023-12-14 15:52:29 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-12-15 10:37:35 +0000 |
| commit | 0fe1798968115488c0c02f4633032a015b1faf97 (patch) | |
| tree | 93c1841ec7259c8be1b0ef2636440c4858f8ff10 /drivers | |
| parent | 93b80887668226180ea5f5349cc728ca6dc700ab (diff) | |
| download | lwn-0fe1798968115488c0c02f4633032a015b1faf97.tar.gz lwn-0fe1798968115488c0c02f4633032a015b1faf97.zip | |
virtio/vsock: send credit update during setting SO_RCVLOWAT
Send credit update message when SO_RCVLOWAT is updated and it is bigger
than number of bytes in rx queue. It is needed, because 'poll()' will
wait until number of bytes in rx queue will be not smaller than
O_RCVLOWAT, so kick sender to send more data. Otherwise mutual hungup
for tx/rx is possible: sender waits for free space and receiver is
waiting data in 'poll()'.
Rename 'set_rcvlowat' callback to 'notify_set_rcvlowat' and set
'sk->sk_rcvlowat' only in one place (i.e. 'vsock_set_rcvlowat'), so the
transport doesn't need to do it.
Fixes: b89d882dc9fc ("vsock/virtio: reduce credit update messages")
Signed-off-by: Arseniy Krasnov <avkrasnov@salutedevices.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/vhost/vsock.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index f75731396b7e..ec20ecff85c7 100644 --- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -449,6 +449,7 @@ static struct virtio_transport vhost_transport = { .notify_send_pre_enqueue = virtio_transport_notify_send_pre_enqueue, .notify_send_post_enqueue = virtio_transport_notify_send_post_enqueue, .notify_buffer_size = virtio_transport_notify_buffer_size, + .notify_set_rcvlowat = virtio_transport_notify_set_rcvlowat, .read_skb = virtio_transport_read_skb, }, |