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TDLS: Fix TPK M2 processing in concurrent initiation case

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If we accept the peer TPK M1 after having sent our TPK M1, we need to
reject TPK M2 from the peer to avoid going through two TDLS setup
exchanges.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2013-03-27 14:17:23 +02:00 committed by Jouni Malinen
parent 81266da728
commit 1d43e28a59
1 changed files with 10 additions and 0 deletions
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10
src/rsn_supp/tdls.c
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@ -1807,6 +1807,16 @@ static int wpa_tdls_process_tpk_m2(struct wpa_sm *sm, const u8 *src_addr,
"TPK M2: " MACSTR, MAC2STR(src_addr));
return -1;
}
if (!peer->initiator) {
/*
* This may happen if both devices try to initiate TDLS at the
* same time and we accept the TPK M1 from the peer in
* wpa_tdls_process_tpk_m1() and clear our previous state.
*/
wpa_printf(MSG_INFO, "TDLS: We were not the initiator, so "
"ignore TPK M2 from " MACSTR, MAC2STR(src_addr));
return -1;
}
wpa_tdls_tpk_retry_timeout_cancel(sm, peer, WLAN_TDLS_SETUP_REQUEST);
if (len < 3 + 2 + 1)