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ui/vdagent: keep "connected" state

Browse source 
During post-load of migration, virtio will notify of fe_open state.
However vdagent code will handle this as a reconnection. This will
trigger a connection reset/caps with the agent.

Check if the state actually changed before resetting the connection.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Marc-André Lureau 2025-03-11 18:00:14 +04:00
parent ac5e2bc910
commit 688ff4cbdf
1 changed files with 7 additions and 0 deletions
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7
ui/vdagent.c
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@ -40,6 +40,7 @@ struct VDAgentChardev {
bool clipboard;
/* guest vdagent */
bool connected;
uint32_t caps;
VDIChunkHeader chunk;
uint32_t chunksize;
@ -858,6 +859,7 @@ static void vdagent_disconnect(VDAgentChardev *vd)
{
trace_vdagent_disconnect();
vd->connected = false;
g_byte_array_set_size(vd->outbuf, 0);
vdagent_reset_bufs(vd);
vd->caps = 0;
@ -876,6 +878,10 @@ static void vdagent_chr_set_fe_open(struct Chardev *chr, int fe_open)
trace_vdagent_fe_open(fe_open);
if (vd->connected == fe_open) {
return;
}
if (!fe_open) {
trace_vdagent_close();
vdagent_disconnect(vd);
@ -885,6 +891,7 @@ static void vdagent_chr_set_fe_open(struct Chardev *chr, int fe_open)
return;
}
vd->connected = true;
vdagent_send_caps(vd, true);
}