framer-802154: Sequence number fix

2013-05-27 06:30:14 -07:00 · 2013-05-27 06:30:14 -07:00 · 1d324e50d2
commit 1d324e50d2
parent 9dc9e4bd9f
1 changed files with 4 additions and 0 deletions
--- a/core/net/mac/framer-802154.c
+++ b/core/net/mac/framer-802154.c
@ -130,6 +130,10 @@ create_frame(int type, int do_create)
    params.seq = packetbuf_attr(PACKETBUF_ATTR_MAC_SEQNO);

  } else {
+    /* Ensure that the sequence number 0 is not used as it would bypass the above check. */
+    if(mac_dsn == 0) {
+      mac_dsn++;
+    }
    params.seq = mac_dsn++;
    packetbuf_set_attr(PACKETBUF_ATTR_MAC_SEQNO, params.seq);
  }