On Mon, Jun 30, 2025 at 03:57:24PM +0800, Xuewei Niu wrote:
>Add support for SIOCINQ ioctl, indicating the length of bytes unread in the
>socket. The value is obtained from `vsock_stream_has_data()`.
>
>Signed-off-by: Xuewei Niu <niuxuewei.nxw@antgroup.com>
>---
> net/vmw_vsock/af_vsock.c | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
>
>diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
>index 2e7a3034e965..bae6b89bb5fb 100644
>--- a/net/vmw_vsock/af_vsock.c
>+++ b/net/vmw_vsock/af_vsock.c
>@@ -1389,6 +1389,28 @@ static int vsock_do_ioctl(struct socket *sock, unsigned int cmd,
> vsk = vsock_sk(sk);
>
> switch (cmd) {
>+ case SIOCINQ: {
>+ ssize_t n_bytes;
>+
>+ if (!vsk->transport) {
>+ ret = -EOPNOTSUPP;
>+ break;
>+ }
>+
>+ if (sock_type_connectible(sk->sk_type) &&
>+ sk->sk_state == TCP_LISTEN) {
>+ ret = -EINVAL;
>+ break;
>+ }
>+
>+ n_bytes = vsock_stream_has_data(vsk);
This patch should go after we fixed vsock_stream_has_data() for hyper-v.
The rest LGTM!
Thanks,
Stefano
>+ if (n_bytes < 0) {
>+ ret = n_bytes;
>+ break;
>+ }
>+ ret = put_user(n_bytes, arg);
>+ break;
>+ }
> case SIOCOUTQ: {
> ssize_t n_bytes;
>
>--
>2.34.1
>