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: 06a8fc78 ("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>
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