From 291cff0680095a2bd4dd35ec0ccb5c42cf9c347c Mon Sep 17 00:00:00 2001
From: Isak Westin <isak.westin@loytec.com>
Date: Thu, 29 Sep 2022 13:03:44 +0200
Subject: mesh: Allow Key Refresh Phase 0 to 3 transition

Transition to Phase 3 from Phase 0 does not cause any state change, but
is a valid transition. See MshPRFv1.0.1 section 4.2.14.
---
 mesh/cfgmod-server.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'mesh')

diff --git a/mesh/cfgmod-server.c b/mesh/cfgmod-server.c
index 7044b670d..be90ef8c5 100644
--- a/mesh/cfgmod-server.c
+++ b/mesh/cfgmod-server.c
@@ -436,6 +436,10 @@ static uint16_t cfg_key_refresh_phase(struct mesh_node *node,
 				return 0;
 		}
 
+		if (pkt[2] == KEY_REFRESH_TRANS_THREE &&
+						phase == KEY_REFRESH_PHASE_NONE)
+			goto done;
+
 		status = mesh_net_key_refresh_phase_set(net, idx, pkt[2]);
 		l_debug("Set KR Phase: net=%3.3x transition=%d", idx, pkt[2]);
 
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