MT#55283 rekernelize after DTLS connect

Change-Id: I468b6c07df96111ee49a85e36382a692dbeec82b
(cherry picked from commit 7b1557cc1e)
(cherry picked from commit 4ee17cf21b)

daemon/call.c

@@ -1102,8 +1102,10 @@ enum call_stream_state call_stream_state_machine(struct packet_stream *ps) {
 		mutex_lock(&ps->in_lock);
 		struct dtls_connection *d = dtls_ptr(ps->selected_sfd);
 		if (d && d->init && !d->connected) {
-			dtls(ps->selected_sfd, NULL, NULL);
+			int dret = dtls(ps->selected_sfd, NULL, NULL);
 			mutex_unlock(&ps->in_lock);
+			if (dret == 1)
+				call_media_unkernelize(media, "DTLS connected");
 			return CSS_DTLS;
 		}
 		mutex_unlock(&ps->in_lock);

daemon/dtls.c

@@ -820,6 +820,8 @@ int dtls(stream_fd *sfd, const str *s, const endpoint_t *fsin) {
 		MEDIA_CLEAR(ps->media, SDES);
 	}
 
+	int dret = 0;
+
 	ret = try_connect(d);
 	if (ret == -1) {
 		ilogs(srtp, LOG_ERROR, "DTLS error on local port %u", sfd->socket.local.port);
@@ -834,6 +836,7 @@ int dtls(stream_fd *sfd, const str *s, const endpoint_t *fsin) {
 	}
 	else if (ret == 1) {
 		/* connected! */
+		dret = 1;
 		mutex_lock(&ps->out_lock); // nested lock!
 		if (dtls_setup_crypto(ps, d))
 			{} /* XXX ?? */
@@ -889,7 +892,7 @@ int dtls(stream_fd *sfd, const str *s, const endpoint_t *fsin) {
 		}
 	}
 
-	return 0;
+	return dret;
 }
 
 /* call must be locked */

daemon/media_socket.c

@@ -2035,6 +2035,11 @@ static int media_demux_protocols(struct packet_handler_ctx *phc) {
 
 		mutex_lock(&phc->mp.stream->in_lock);
 		int ret = dtls(phc->mp.sfd, &phc->s, &phc->mp.fsin);
+		if (ret == 1) {
+			phc->unkernelize = "DTLS connected";
+			phc->unkernelize_subscriptions = true;
+			ret = 0;
+		}
 		mutex_unlock(&phc->mp.stream->in_lock);
 		if (!ret)
 			return 0;