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Set last_eapol_matches_bssid=1 on a roam+auth indication from driver

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Commit 3ab35a6603 ("Extend EAPOL frames processing workaround for
roaming cases") added a work around to address the issue of EAPOL frame
reception after reassociation replied to with an incorrect destination
address (the BSSID of the old AP). This is due to association events and
EAPOL RX events being reordered for the roaming cases with drivers that
perform BSS selection internally.

This mechanism relies on the fact that the driver always forwards the
EAPOL handshake to wpa_supplicant after the roaming (sets
last_eapol_matches_bssid during the EAPOL processing and resets on the
assoc/reassoc indication).

The above approach does not address the case where the driver does the
EAPOL handshake on the roam, indicating the authorized status to
wpa_supplicant but also forwards the EAPOL handshake to wpa_supplicant
for few other roam attempts. This is because the flag
last_eapol_matches_bssid is not set with the roam+authorized event from
the driver. Thus, the next reorder of roam and EAPOL RX events would
miss this workaround.

Address this by setting last_eapol_matches_bssid=1 on a roam+authorized
event from the driver.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Sunil Dutt 2021-03-25 07:17:13 -07:00 committed by Jouni Malinen
parent 527be9ce72
commit 0bae161229
1 changed files with 2 additions and 0 deletions
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2
wpa_supplicant/events.c
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@ -4405,6 +4405,8 @@ static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
wpa_supplicant_event_port_authorized(wpa_s); wpa_supplicant_event_port_authorized(wpa_s);
wpa_s->last_eapol_matches_bssid = 1;
wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr); wpa_sm_set_rx_replay_ctr(wpa_s->wpa, data->assoc_info.key_replay_ctr);
wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck, wpa_sm_set_ptk_kck_kek(wpa_s->wpa, data->assoc_info.ptk_kck,
data->assoc_info.ptk_kck_len, data->assoc_info.ptk_kck_len,