If this node is a member of a primary subnet and receives a Secure Network beacon on a secondary subnet with an IV Index greater than the last known IV Index of the primary subnet, the Secure Network beacon shall be ignored. See MshPRFv1.0.1 section 3.10.5. --- mesh/net.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/mesh/net.c b/mesh/net.c index 7fec98531..dc3d1fd80 100644 --- a/mesh/net.c +++ b/mesh/net.c @@ -2708,7 +2708,7 @@ static void process_beacon(void *net_ptr, void *user_data) struct net_beacon_data *beacon_data = user_data; uint32_t ivi; bool ivu, kr, local_kr; - struct mesh_subnet *subnet; + struct mesh_subnet *subnet, *primary_subnet; ivi = beacon_data->ivi; @@ -2723,6 +2723,17 @@ static void process_beacon(void *net_ptr, void *user_data) if (!subnet) return; + /* + * @MshPRFv1.0.1 section 3.10.5: IV Update procedure + * If this node is a member of a primary subnet and receives a Secure + * Network beacon on a secondary subnet with an IV Index greater than + * the last known IV Index of the primary subnet, the Secure Network + * beacon shall be ignored. + */ + primary_subnet = get_primary_subnet(net); + if (primary_subnet && subnet != primary_subnet && ivi > net->iv_index) + return; + /* Get IVU and KR boolean bits from beacon */ ivu = beacon_data->ivu; kr = beacon_data->kr; -- 2.20.1
