On Mon, Sep 26, 2022 at 02:36:40PM +0800, [email protected] wrote:
> From: Hyman Huang(黄勇) <[email protected]>
>
> Abstract vhost acked features saving into
> vhost_user_save_acked_features, export it as util function.
>
> Signed-off-by: Hyman Huang(黄勇) <[email protected]>
> Signed-off-by: Guoyi Tu <[email protected]>
> ---
> include/net/vhost-user.h | 2 ++
> net/vhost-user.c | 35 +++++++++++++++++++----------------
> 2 files changed, 21 insertions(+), 16 deletions(-)
>
> diff --git a/include/net/vhost-user.h b/include/net/vhost-user.h
> index 5bcd8a6285..00d46613d3 100644
> --- a/include/net/vhost-user.h
> +++ b/include/net/vhost-user.h
> @@ -14,5 +14,7 @@
> struct vhost_net;
> struct vhost_net *vhost_user_get_vhost_net(NetClientState *nc);
> uint64_t vhost_user_get_acked_features(NetClientState *nc);
> +void vhost_user_save_acked_features(NetClientState *nc,
> + bool cleanup);
>
> #endif /* VHOST_USER_H */
> diff --git a/net/vhost-user.c b/net/vhost-user.c
> index b1a0247b59..c512cc9727 100644
> --- a/net/vhost-user.c
> +++ b/net/vhost-user.c
> @@ -45,24 +45,31 @@ uint64_t vhost_user_get_acked_features(NetClientState *nc)
> return s->acked_features;
> }
>
> -static void vhost_user_stop(int queues, NetClientState *ncs[])
> +void vhost_user_save_acked_features(NetClientState *nc, bool cleanup)
> {
> NetVhostUserState *s;
> +
> + s = DO_UPCAST(NetVhostUserState, nc, nc);
> + if (s->vhost_net) {
> + uint64_t features = vhost_net_get_acked_features(s->vhost_net);
> + if (features) {
> + s->acked_features = features;
> + }
Note it does not set acked_features if features are 0.
Which might be the case for legacy ...
I will need to analyze this more to figure out what's
the correct behaviour....
Stefano? Raphael?
> +
> + if (cleanup) {
> + vhost_net_cleanup(s->vhost_net);
> + }
> + }
> +}
> +
> +static void vhost_user_stop(int queues, NetClientState *ncs[])
> +{
> int i;
>
> for (i = 0; i < queues; i++) {
> assert(ncs[i]->info->type == NET_CLIENT_DRIVER_VHOST_USER);
>
> - s = DO_UPCAST(NetVhostUserState, nc, ncs[i]);
> -
> - if (s->vhost_net) {
> - /* save acked features */
> - uint64_t features = vhost_net_get_acked_features(s->vhost_net);
> - if (features) {
> - s->acked_features = features;
> - }
> - vhost_net_cleanup(s->vhost_net);
> - }
> + vhost_user_save_acked_features(ncs[i], true);
> }
> }
>
> @@ -251,11 +258,7 @@ static void chr_closed_bh(void *opaque)
> s = DO_UPCAST(NetVhostUserState, nc, ncs[0]);
>
> for (i = queues -1; i >= 0; i--) {
> - s = DO_UPCAST(NetVhostUserState, nc, ncs[i]);
> -
> - if (s->vhost_net) {
> - s->acked_features = vhost_net_get_acked_features(s->vhost_net);
> - }
> + vhost_user_save_acked_features(ncs[i], false);
> }
>
> qmp_set_link(name, false, &err);
> --
> 2.27.0
