On Wed, Dec 07, 2016 at 06:00:19PM +0800, Peng Tao wrote:
> To allow canceling all packets of a connection.
>
> Signed-off-by: Peng Tao <bergwolf@xxxxxxxxx>
> ---
> drivers/vhost/vsock.c | 29 +++++++++++++++++++++++++++++
> include/linux/virtio_vsock.h | 3 +++
> 2 files changed, 32 insertions(+)
>
> diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
> index a504e2e0..0c23b55 100644
> --- a/drivers/vhost/vsock.c
> +++ b/drivers/vhost/vsock.c
> @@ -218,6 +218,34 @@ vhost_transport_send_pkt(struct virtio_vsock_pkt *pkt)
> return len;
> }
>
> +static int
> +vhost_transport_cancel_pkt(struct vsock_sock *vsk)
> +{
> + struct vhost_vsock *vsock;
> + struct virtio_vsock_pkt *pkt, *n;
> + LIST_HEAD(freeme);
> +
> + /* Find the vhost_vsock according to guest context id */
> + vsock = vhost_vsock_get(vsk->remote_addr.svm_cid);
> + if (!vsock)
> + return -ENODEV;
> +
> + spin_lock_bh(&vsock->send_pkt_list_lock);
> + list_for_each_entry_safe(pkt, n, &vsock->send_pkt_list, list) {
> + if (pkt->vsk != vsk)
> + continue;
> + list_move(&pkt->list, &freeme);
> + }
> + spin_unlock_bh(&vsock->send_pkt_list_lock);
> +
> + list_for_each_entry_safe(pkt, n, &freeme, list) {
> + list_del(&pkt->list);
> + virtio_transport_free_pkt(pkt);
> + }
Please handle queued_replies so we can resume rx if we fall below the
threshold again.
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