From 4ee17cf21b08d42f9b59254756d79021ac0f114d Mon Sep 17 00:00:00 2001
From: Richard Fuchs <rfuchs@sipwise.com>
Date: Wed, 25 Sep 2024 11:58:05 -0400
Subject: [PATCH] MT#55283 rekernelize after DTLS connect

Change-Id: I468b6c07df96111ee49a85e36382a692dbeec82b
(cherry picked from commit 7b1557cc1efbc9847c8870575dc9db4f8dd795b5)
---
 daemon/call.c         | 4 +++-
 daemon/dtls.c         | 5 ++++-
 daemon/media_socket.c | 5 +++++
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/daemon/call.c b/daemon/call.c
index ea7c1e8e4d..fa2db9eb2b 100644
--- a/daemon/call.c
+++ b/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);
diff --git a/daemon/dtls.c b/daemon/dtls.c
index d6447beb66..04669a29f1 100644
--- a/daemon/dtls.c
+++ b/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 */
diff --git a/daemon/media_socket.c b/daemon/media_socket.c
index d62e79a71f..ec8bb14679 100644
--- a/daemon/media_socket.c
+++ b/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;