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vhost-user: save features if the char dev is closed

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That way the state can be correctly restored when the device is opened
again. This might happen if the backend is restarted.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1738768
Reported-by: Pei Zhang <pezhang@redhat.com>
Fixes: 6ab79a20af3a ("do not call vhost_net_cleanup() on running net from char user event")
Cc: ddstreet@canonical.com
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
Message-Id: <20190924162044.11414-1-amorenoz@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Adrian Moreno 2019-09-24 18:20:44 +02:00 committed by Michael S. Tsirkin
parent 4f59102571
commit c6beefd674
1 changed files with 4 additions and 0 deletions
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4
net/vhost-user.c
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@ -235,6 +235,10 @@ static void chr_closed_bh(void *opaque)
s = DO_UPCAST(NetVhostUserState, nc, ncs[0]);
if (s->vhost_net) {
s->acked_features = vhost_net_get_acked_features(s->vhost_net);
}
qmp_set_link(name, false, &err);
qemu_chr_fe_set_handlers(&s->chr, NULL, NULL, net_vhost_user_event,