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Code Issues

madwifi: preserve WPA IEs received in probe responses and prefer them over beacon information improves reliability when using wpa_supplicant to connect to aps with hidden ssid and dynamic encryption settings

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SVN-Revision: 11928
This commit is contained in:
Felix Fietkau 2008-07-25 22:37:06 +00:00
parent 8aab13b562
commit 21dbb0d64d
1 changed files with 49 additions and 0 deletions
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49
package/madwifi/patches/368-sta_ie_preserve.patch Normal file
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@ -0,0 +1,49 @@
--- a/net80211/ieee80211_scan_sta.c
+++ b/net80211/ieee80211_scan_sta.c
@@ -201,8 +201,10 @@
}
static void
-saveie(u_int8_t **iep, const u_int8_t *ie)
+saveie(u_int8_t **iep, const u_int8_t *ie, int preserve)
{
+ if (preserve && *iep)
+ return;
if (ie == NULL)
*iep = NULL;
else
@@ -304,10 +306,10 @@
(const struct ieee80211_tim_ie *) sp->tim;
ise->se_dtimperiod = tim->tim_period;
}
- saveie(&ise->se_wme_ie, sp->wme);
- saveie(&ise->se_wpa_ie, sp->wpa);
- saveie(&ise->se_rsn_ie, sp->rsn);
- saveie(&ise->se_ath_ie, sp->ath);
+ saveie(&ise->se_wme_ie, sp->wme, 0);
+ saveie(&ise->se_wpa_ie, sp->wpa, !sp->isprobe);
+ saveie(&ise->se_rsn_ie, sp->rsn, !sp->isprobe);
+ saveie(&ise->se_ath_ie, sp->ath, 0);
/* clear failure count after STA_FAIL_AGE passes */
if (se->se_fails && (jiffies - se->se_lastfail) > STA_FAILS_AGE*HZ) {
--- a/net80211/ieee80211_input.c
+++ b/net80211/ieee80211_input.c
@@ -3106,6 +3106,7 @@
*/
IEEE80211_VERIFY_LENGTH(efrm - frm, 12);
memset(&scan, 0, sizeof(scan));
+ scan.isprobe = (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) && IEEE80211_ADDR_EQ(wh->i_addr2, vap->iv_myaddr);
scan.tstamp = frm;
frm += 8;
scan.bintval = le16toh(*(__le16 *)frm);
--- a/net80211/ieee80211_scan.h
+++ b/net80211/ieee80211_scan.h
@@ -133,6 +133,7 @@
u_int8_t erp;
u_int16_t bintval;
u_int8_t timoff;
+ u_int8_t isprobe;
u_int8_t *tim;
u_int8_t *tstamp;
u_int8_t *country;