On 27 June 2015 at 23:49, Janusz Dziedzic <[email protected]> wrote:
> On 24 June 2015 at 14:20, Peer, Ilan <[email protected]> wrote:
>> Hi Janusz,
>>
>> Any chance you can check if the attached patch fixes the issue you reported?
>>
>> Thanks in advance,
>>
> I just check the mac80211/cfg80211 code, and I am not sure this direct
> probe could work correctly.
>
> Function ieee80211_rx_mgmt_probe_resp() is interesting.
> Seems we call
> ieee80211_rx_bss_info() -> ieee80211_bss_info_update ->
> cfg80211_inform_bss_width_frame() -> cfg80211_bss_update() -> this
> could set bss->proberesp_ies
> and after that check:
>
> if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
> ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
> /* got probe response, continue with auth */
> sdata_info(sdata, "direct probe responded\n");
>
> So, ifmgd->auth_data->bss->proberesp_ies could be set before check?
>
> BTW, During my tests (no matter which card used) I never saw this msg:
> sdata_info(sdata, "direct probe responded\n");
> And always saw 3 failed direct probes.
>
> @Johannes: Is that possible or I miss something.
>
Simplest patch I made:
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index e9f36f7..8ceae3d 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -371,6 +371,7 @@ struct ieee80211_mgd_auth_data {
struct cfg80211_bss *bss;
unsigned long timeout;
int tries;
+ bool waiting_probe_resp;
u16 algorithm, expected_transaction;
u8 key[WLAN_KEY_LEN_WEP104];
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 3294666..6f4027e 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3212,13 +3212,14 @@ static void
ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
ieee80211_reset_ap_probe(sdata);
- if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
+ if (ifmgd->auth_data && ifmgd->auth_data->waiting_probe_resp &&
ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
/* got probe response, continue with auth */
sdata_info(sdata, "direct probe responded\n");
ifmgd->auth_data->tries = 0;
ifmgd->auth_data->timeout = jiffies;
ifmgd->auth_data->timeout_started = true;
+ ifmgd->auth_data->waiting_probe_resp = false;
run_again(sdata, ifmgd->auth_data->timeout);
}
}
@@ -3727,6 +3728,8 @@ static int ieee80211_probe_auth(struct
ieee80211_sub_if_data *sdata)
auth_data->bss->bssid, auth_data->tries,
IEEE80211_AUTH_MAX_TRIES);
+ auth_data->waiting_probe_resp = true;
+
rcu_read_lock();
ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID);
if (!ssidie) {
BR
Janusz
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