diff mbox series

[RFC,v3,7/9] virtio/vsock: check SO_RCVLOWAT before wake up reader

Message ID e08064c5-fd4a-7595-3138-67aa2f46c955@sberdevices.ru (mailing list archive)
State RFC
Headers show
Series vsock: updates for SO_RCVLOWAT handling | expand

Checks

Context Check Description
netdev/tree_selection success Guessed tree name to be net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 9 of 9 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Arseniy Krasnov Aug. 3, 2022, 2:03 p.m. UTC
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.

Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
---
 net/vmw_vsock/virtio_transport_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Stefano Garzarella Aug. 8, 2022, 10:58 a.m. UTC | #1
On Wed, Aug 03, 2022 at 02:03:58PM +0000, Arseniy Krasnov wrote:
>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.

Maybe we can mention that these are done in vsock_data_ready().

Anyway, the patch LGTM:

Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>

>
>Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru>
>---
> net/vmw_vsock/virtio_transport_common.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
>index 8f6356ebcdd1..35863132f4f1 100644
>--- a/net/vmw_vsock/virtio_transport_common.c
>+++ b/net/vmw_vsock/virtio_transport_common.c
>@@ -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);
>-- 
>2.25.1
diff mbox series

Patch

diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index 8f6356ebcdd1..35863132f4f1 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -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);