[RFC PATCH v5 11/17] vsock/virtio: support MSG_ZEROCOPY for transport
From: Arseniy Krasnov <hidden>
Date: 2023-07-01 06:54:02
Also in:
kvm, lkml
Subsystem:
networking [general], the rest, virtio and vhost vsock driver, virtio core, vm sockets (af_vsock) · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Stefan Hajnoczi, Stefano Garzarella, "Michael S. Tsirkin", Jason Wang, Eugenio Pérez
Add 'msgzerocopy_allow()' callback for virtio transport. Signed-off-by: Arseniy Krasnov <redacted> --- Changelog: v4 -> v5: * Move 'msgzerocopy_allow' right after seqpacket callbacks. net/vmw_vsock/virtio_transport.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
index 6cbb45bb12d2..8d3e9f441fa1 100644
--- a/net/vmw_vsock/virtio_transport.c
+++ b/net/vmw_vsock/virtio_transport.c@@ -441,6 +441,11 @@ static void virtio_vsock_rx_done(struct virtqueue *vq) queue_work(virtio_vsock_workqueue, &vsock->rx_work); } +static bool virtio_transport_msgzerocopy_allow(void) +{ + return true; +} + static bool virtio_transport_seqpacket_allow(u32 remote_cid); static struct virtio_transport virtio_transport = {
@@ -474,6 +479,8 @@ static struct virtio_transport virtio_transport = { .seqpacket_allow = virtio_transport_seqpacket_allow, .seqpacket_has_data = virtio_transport_seqpacket_has_data, + .msgzerocopy_allow = virtio_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