[RFC PATCH v3 12/17] vsock/loopback: support MSG_ZEROCOPY for transport
From: Arseniy Krasnov <hidden>
Date: 2023-05-22 07:46:04
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> --- net/vmw_vsock/vsock_loopback.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/net/vmw_vsock/vsock_loopback.c b/net/vmw_vsock/vsock_loopback.c
index 5c6360df1f31..a2e4aeda2d92 100644
--- a/net/vmw_vsock/vsock_loopback.c
+++ b/net/vmw_vsock/vsock_loopback.c@@ -47,6 +47,7 @@ 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); static struct virtio_transport loopback_transport = { .transport = {
@@ -92,11 +93,18 @@ static struct virtio_transport loopback_transport = { .notify_buffer_size = virtio_transport_notify_buffer_size, .read_skb = virtio_transport_read_skb, + + .msgzerocopy_allow = vsock_loopback_msgzerocopy_allow, }, .send_pkt = vsock_loopback_send_pkt, }; +static bool vsock_loopback_msgzerocopy_allow(void) +{ + return true; +} + static bool vsock_loopback_seqpacket_allow(u32 remote_cid) { return true;
--
2.25.1