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| author | Arseniy Krasnov <avkrasnov@salutedevices.com> | 2023-12-14 13:52:29 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-12-15 11:37:35 +0100 |
| commit | 0fe1798968115488c0c02f4633032a015b1faf97 (patch) | |
| tree | 93c1841ec7259c8be1b0ef2636440c4858f8ff10 /net/vmw_vsock/hyperv_transport.c | |
| parent | virtio/vsock: fix logic which reduces credit update messages (diff) | |
| download | linux-0fe1798968115488c0c02f4633032a015b1faf97.tar.xz linux-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 'net/vmw_vsock/hyperv_transport.c')
| -rw-r--r-- | net/vmw_vsock/hyperv_transport.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/vmw_vsock/hyperv_transport.c b/net/vmw_vsock/hyperv_transport.c index 7cb1a9d2cdb4..e2157e387217 100644 --- a/net/vmw_vsock/hyperv_transport.c +++ b/net/vmw_vsock/hyperv_transport.c @@ -816,7 +816,7 @@ int hvs_notify_send_post_enqueue(struct vsock_sock *vsk, ssize_t written, } static -int hvs_set_rcvlowat(struct vsock_sock *vsk, int val) +int hvs_notify_set_rcvlowat(struct vsock_sock *vsk, int val) { return -EOPNOTSUPP; } @@ -856,7 +856,7 @@ static struct vsock_transport hvs_transport = { .notify_send_pre_enqueue = hvs_notify_send_pre_enqueue, .notify_send_post_enqueue = hvs_notify_send_post_enqueue, - .set_rcvlowat = hvs_set_rcvlowat + .notify_set_rcvlowat = hvs_notify_set_rcvlowat }; static bool hvs_check_transport(struct vsock_sock *vsk) |