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authorHarshavardhan Unnibhavi <harshanavkis@gmail.com>2021-08-02 20:35:06 +0300
committerJakub Kicinski <kuba@kernel.org>2021-08-04 00:30:59 +0300
commite3ea110d6e796146920e1be0108464ebcf283ef7 (patch)
tree46b934e9107735ff1df36ee5231052ae2dfbe3e4 /net/vmw_vsock
parentabc7285d89ffd089739a1a3059ddd843dd019637 (diff)
downloadlinux-e3ea110d6e796146920e1be0108464ebcf283ef7.tar.xz
VSOCK: handle VIRTIO_VSOCK_OP_CREDIT_REQUEST
The original implementation of the virtio-vsock driver does not handle a VIRTIO_VSOCK_OP_CREDIT_REQUEST as required by the virtio-vsock specification. The vsock device emulated by vhost-vsock and the virtio-vsock driver never uses this request, which was probably why nobody noticed it. However, another implementation of the device may use this request type. Hence, this commit introduces a way to handle an explicit credit request by responding with a corresponding credit update as required by the virtio-vsock specification. Fixes: 06a8fc78367d ("VSOCK: Introduce virtio_vsock_common.ko") Signed-off-by: Harshavardhan Unnibhavi <harshanavkis@gmail.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Link: https://lore.kernel.org/r/20210802173506.2383-1-harshanavkis@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/vmw_vsock')
-rw-r--r--net/vmw_vsock/virtio_transport_common.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index 169ba8b72a63..081e7ae93cb1 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -1079,6 +1079,9 @@ virtio_transport_recv_connected(struct sock *sk,
virtio_transport_recv_enqueue(vsk, pkt);
sk->sk_data_ready(sk);
return err;
+ case VIRTIO_VSOCK_OP_CREDIT_REQUEST:
+ virtio_transport_send_credit_update(vsk);
+ break;
case VIRTIO_VSOCK_OP_CREDIT_UPDATE:
sk->sk_write_space(sk);
break;