[RFC PATCH v5 12/17] vsock/loopback: support MSG_ZEROCOPY for transport
From: Arseniy Krasnov <hidden>
Date: 2023-07-01 06:54:07
Also in:
kvm, lkml
Subsystem:
networking [general], the rest, vm sockets (af_vsock) · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Stefano Garzarella
Add 'msgzerocopy_allow()' callback for loopback transport. Signed-off-by: Arseniy Krasnov <redacted> --- Changelog: v4 -> v5: * Move 'msgzerocopy_allow' right after seqpacket callbacks. * Don't use prototype for 'vsock_loopback_msgzerocopy_allow()'. net/vmw_vsock/vsock_loopback.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/net/vmw_vsock/vsock_loopback.c b/net/vmw_vsock/vsock_loopback.c
index 5c6360df1f31..048640167411 100644
--- a/net/vmw_vsock/vsock_loopback.c
+++ b/net/vmw_vsock/vsock_loopback.c@@ -47,6 +47,10 @@ static int vsock_loopback_cancel_pkt(struct vsock_sock *vsk) } static bool vsock_loopback_seqpacket_allow(u32 remote_cid); +static bool vsock_loopback_msgzerocopy_allow(void) +{ + return true; +} static struct virtio_transport loopback_transport = { .transport = {
@@ -79,6 +83,8 @@ static struct virtio_transport loopback_transport = { .seqpacket_allow = vsock_loopback_seqpacket_allow, .seqpacket_has_data = virtio_transport_seqpacket_has_data, + .msgzerocopy_allow = vsock_loopback_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