diff options
Diffstat (limited to 'mesh/net.c')
| -rw-r--r-- | mesh/net.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/mesh/net.c b/mesh/net.c index f0f0dbdbd..35388beec 100644 --- a/mesh/net.c +++ b/mesh/net.c @@ -511,6 +511,15 @@ uint32_t mesh_net_next_seq_num(struct mesh_net *net) { uint32_t seq = net->seq_num++; + /* Cap out-of-range seq_num max value to +1. Out of range + * seq_nums will not be sent as they would violate spec. + * This condition signals a runaway seq_num condition, and + * the node must wait for a completed IV Index update procedure + * before it can send again. + */ + if (net->seq_num > SEQ_MASK) + net->seq_num = SEQ_MASK + 1; + node_set_sequence_number(net->node, net->seq_num); return seq; } |