[PATCH net-next v2 05/12] vhost/vsock: support MSG_ZEROCOPY for transport
From: Arseniy Krasnov <hidden>
Date: 2023-09-30 21:10:51
Also in:
kvm, lkml
Subsystem:
the rest, virtio and vhost vsock driver, virtio host (vhost) · Maintainers:
Linus Torvalds, Stefan Hajnoczi, Stefano Garzarella, "Michael S. Tsirkin", Jason Wang
Add 'msgzerocopy_allow()' callback for vhost transport. Signed-off-by: Arseniy Krasnov <redacted> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> --- drivers/vhost/vsock.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index 83711aad855c..f75731396b7e 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c@@ -398,6 +398,11 @@ static bool vhost_vsock_more_replies(struct vhost_vsock *vsock) return val < vq->num; } +static bool vhost_transport_msgzerocopy_allow(void) +{ + return true; +} + static bool vhost_transport_seqpacket_allow(u32 remote_cid); static struct virtio_transport vhost_transport = {
@@ -431,6 +436,8 @@ static struct virtio_transport vhost_transport = { .seqpacket_allow = vhost_transport_seqpacket_allow, .seqpacket_has_data = virtio_transport_seqpacket_has_data, + .msgzerocopy_allow = vhost_transport_msgzerocopy_allow, + .notify_poll_in = virtio_transport_notify_poll_in, .notify_poll_out = virtio_transport_notify_poll_out, .notify_recv_init = virtio_transport_notify_recv_init,
--
2.25.1