Signed-off-by: Daniele Venturino <daniele.ventur...@m3s.it>
---
lib/rstp-state-machines.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/lib/rstp-state-machines.c b/lib/rstp-state-machines.c
index e03f720..ade2d61 100644
--- a/lib/rstp-state-machines.c
+++ b/lib/rstp-state-machines.c
@@ -117,6 +117,18 @@ process_received_bpdu__(struct rstp_port *p, const void
*bpdu,
if (p->rcvd_bpdu) {
return;
}
+ /* [9.2.9 Encoding of Port Role values]
+ * NOTE.If the Unknown value of the Port Role parameter is received, the
+ * state machines will effectively treat the RST BPDU as if it were a
+ * Configuration BPDU.
+ */
+ uint8_t role = ((((struct rstp_bpdu *)bpdu)->flags) & ROLE_FLAG_MASK)
+ >> ROLE_FLAG_SHIFT;
+ if (role == PORT_UNKN &&
+ ((struct rstp_bpdu *)bpdu)->bpdu_type == RAPID_SPANNING_TREE_BPDU)
+ {
+ ((struct rstp_bpdu *)bpdu)->bpdu_type = CONFIGURATION_BPDU;
+ }
if (validate_received_bpdu(p, bpdu, bpdu_size) == 0) {
p->rcvd_bpdu = true;
p->rx_rstp_bpdu_cnt++;
--
1.8.1.2
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