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WNM: Ignore WNM-Sleep Mode Response without pending request

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Commit 03ed0a5239 ('WNM: Ignore WNM-Sleep
Mode Response if WNM-Sleep Mode has not been used') started ignoring the
response when no WNM-Sleep Mode Request had been used during the
association. This can be made tighter by clearing the used flag when
successfully processing a response. This adds an additional layer of
protection against unexpected retransmissions of the response frame.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2017-09-22 11:25:02 +03:00
parent ff89af96e5
commit adae51f8b9
1 changed files with 3 additions and 1 deletions
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4
wpa_supplicant/wnm_sta.c
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@ -260,7 +260,7 @@ static void ieee802_11_rx_wnmsleep_resp(struct wpa_supplicant *wpa_s,
if (!wpa_s->wnmsleep_used) { if (!wpa_s->wnmsleep_used) {
wpa_printf(MSG_DEBUG, wpa_printf(MSG_DEBUG,
"WNM: Ignore WNM-Sleep Mode Response frame since WNM-Sleep Mode has not been used in this association"); "WNM: Ignore WNM-Sleep Mode Response frame since WNM-Sleep Mode operation has not been requested");
return; return;
} }
@ -299,6 +299,8 @@ static void ieee802_11_rx_wnmsleep_resp(struct wpa_supplicant *wpa_s,
return; return;
} }
wpa_s->wnmsleep_used = 0;
if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT || if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT ||
wnmsleep_ie->status == WNM_STATUS_SLEEP_EXIT_ACCEPT_GTK_UPDATE) { wnmsleep_ie->status == WNM_STATUS_SLEEP_EXIT_ACCEPT_GTK_UPDATE) {
wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response " wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response "