[RFC PATCH v7 19/22] vhost/vsock: SEQPACKET feature bit support
From: Arseny Krasnov <hidden>
Date: 2021-03-23 13:16:02
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
This adds handling of SEQPACKET bit: if guest sets features with this bit cleared, then SOCK_SEQPACKET support will be disabled. Signed-off-by: Arseny Krasnov <redacted> --- drivers/vhost/vsock.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index 5af141772068..710d99e61ccc 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c@@ -31,7 +31,8 @@ enum { VHOST_VSOCK_FEATURES = VHOST_FEATURES | - (1ULL << VIRTIO_F_ACCESS_PLATFORM) + (1ULL << VIRTIO_F_ACCESS_PLATFORM) | + (1ULL << VIRTIO_VSOCK_F_SEQPACKET) }; enum {
@@ -796,6 +797,9 @@ static int vhost_vsock_set_features(struct vhost_vsock *vsock, u64 features) goto err; } + if (features & (1ULL << VIRTIO_VSOCK_F_SEQPACKET)) + vhost_transport.seqpacket_allow = true; + for (i = 0; i < ARRAY_SIZE(vsock->vqs); i++) { vq = &vsock->vqs[i]; mutex_lock(&vq->mutex);
--
2.25.1