--- /dev/null
+Index: madwifi-trunk-r3776/net80211/ieee80211.c
+===================================================================
+--- madwifi-trunk-r3776.orig/net80211/ieee80211.c 2008-07-17 00:21:29.000000000 +0200
++++ madwifi-trunk-r3776/net80211/ieee80211.c 2008-07-17 02:56:18.000000000 +0200
+@@ -347,7 +347,9 @@
+ IEEE80211_MS_TO_TU(IEEE80211_BMISSTHRESH_DEFAULT_MS),
+ ic->ic_lintval), ic->ic_lintval);
+ }
+-
++ ic->ic_protmode_timeout = IEEE80211_PROTMODE_TIMEOUT;
++ ic->ic_protmode_rssi = IEEE80211_PROTMODE_RSSITHR;
++
+ IEEE80211_LOCK_INIT(ic, "ieee80211com");
+ IEEE80211_VAPS_LOCK_INIT(ic, "ieee80211com_vaps");
+ TAILQ_INIT(&ic->ic_vaps);
+Index: madwifi-trunk-r3776/net80211/ieee80211_input.c
+===================================================================
+--- madwifi-trunk-r3776.orig/net80211/ieee80211_input.c 2008-07-17 02:30:28.000000000 +0200
++++ madwifi-trunk-r3776/net80211/ieee80211_input.c 2008-07-17 02:56:18.000000000 +0200
+@@ -3382,14 +3382,18 @@
+ IEEE80211_IS_CHAN_ANYG(ic->ic_curchan)) {
+
+ /* Assume no ERP IE == 11b AP */
+- if ((!has_erp || (has_erp && (scan.erp & IEEE80211_ERP_NON_ERP_PRESENT))) &&
+- !(ic->ic_flags & IEEE80211_F_USEPROT)) {
++ if ((!has_erp || (has_erp &&
++ (scan.erp & IEEE80211_ERP_NON_ERP_PRESENT))) &&
++ (rssi > ic->ic_protmode_rssi)) {
+ struct ieee80211vap *tmpvap;
+
+- ic->ic_flags |= IEEE80211_F_USEPROT;
+- TAILQ_FOREACH(tmpvap, &ic->ic_vaps, iv_next) {
+- tmpvap->iv_flags_ext |= IEEE80211_FEXT_ERPUPDATE;
++ if (!(ic->ic_flags & IEEE80211_F_USEPROT)) {
++ ic->ic_flags |= IEEE80211_F_USEPROT;
++ TAILQ_FOREACH(tmpvap, &ic->ic_vaps, iv_next) {
++ tmpvap->iv_flags_ext |= IEEE80211_FEXT_ERPUPDATE;
++ }
+ }
++ ic->ic_protmode_lasttrig = jiffies;
+ }
+ }
+
+Index: madwifi-trunk-r3776/net80211/ieee80211_ioctl.h
+===================================================================
+--- madwifi-trunk-r3776.orig/net80211/ieee80211_ioctl.h 2008-07-17 02:25:53.000000000 +0200
++++ madwifi-trunk-r3776/net80211/ieee80211_ioctl.h 2008-07-17 02:56:52.000000000 +0200
+@@ -652,6 +652,8 @@
+ IEEE80211_PARAM_LEAKTXBUFS = 82, /* Leak tx buffers */
+ IEEE80211_PARAM_MAXRATE = 83, /* Maximum rate (by table index) */
+ IEEE80211_PARAM_MINRATE = 84, /* Minimum rate (by table index) */
++ IEEE80211_PARAM_PROTMODE_RSSI = 85, /* RSSI Threshold for enabling protection mode */
++ IEEE80211_PARAM_PROTMODE_TIMEOUT = 86, /* Timeout for expiring protection mode */
+ };
+
+ #define SIOCG80211STATS (SIOCDEVPRIVATE+2)
+Index: madwifi-trunk-r3776/net80211/ieee80211_var.h
+===================================================================
+--- madwifi-trunk-r3776.orig/net80211/ieee80211_var.h 2008-07-17 02:23:00.000000000 +0200
++++ madwifi-trunk-r3776/net80211/ieee80211_var.h 2008-07-17 02:56:18.000000000 +0200
+@@ -138,6 +138,9 @@
+
+ #define IEEE80211_APPIE_MAX 1024
+
++#define IEEE80211_PROTMODE_RSSITHR 15 /* default rssi threshold for protection mode trigger */
++#define IEEE80211_PROTMODE_TIMEOUT 30 /* timeout for keeping protection mode alive */
++
+ #define IEEE80211_PWRCONSTRAINT_VAL(ic) \
+ (((ic)->ic_bsschan->ic_maxregpower > (ic)->ic_curchanmaxpwr) ? \
+ (ic)->ic_bsschan->ic_maxregpower - (ic)->ic_curchanmaxpwr : 0)
+@@ -335,6 +338,9 @@
+ u_int16_t ic_newtxpowlimit; /* tx power limit to change to (in 0.5 dBm) */
+ u_int16_t ic_uapsdmaxtriggers; /* max triggers that could arrive */
+ u_int8_t ic_coverageclass; /* coverage class */
++ u_int8_t ic_protmode_rssi; /* rssi threshold for protection mode */
++ u_int64_t ic_protmode_lasttrig; /* last trigger for protection mode */
++ u_int16_t ic_protmode_timeout; /* protection mode timeout */
+
+ /* Channel state:
+ *
+Index: madwifi-trunk-r3776/net80211/ieee80211_wireless.c
+===================================================================
+--- madwifi-trunk-r3776.orig/net80211/ieee80211_wireless.c 2008-07-17 02:26:17.000000000 +0200
++++ madwifi-trunk-r3776/net80211/ieee80211_wireless.c 2008-07-17 02:56:18.000000000 +0200
+@@ -2336,6 +2336,12 @@
+ case IEEE80211_PARAM_RSSI_EWMA:
+ ic->ic_rssi_ewma = value;
+ break;
++ case IEEE80211_PARAM_PROTMODE_TIMEOUT:
++ ic->ic_protmode_timeout = value;
++ break;
++ case IEEE80211_PARAM_PROTMODE_RSSI:
++ ic->ic_protmode_rssi = value;
++ break;
+ case IEEE80211_PARAM_MCASTCIPHER:
+ if ((vap->iv_caps & cipher2cap(value)) == 0 &&
+ !ieee80211_crypto_available(vap, value))
+@@ -2992,6 +2998,12 @@
+ case IEEE80211_PARAM_RSSI_EWMA:
+ param[0] = ic->ic_rssi_ewma;
+ break;
++ case IEEE80211_PARAM_PROTMODE_TIMEOUT:
++ param[0] = ic->ic_protmode_timeout;
++ break;
++ case IEEE80211_PARAM_PROTMODE_RSSI:
++ param[0] = ic->ic_protmode_rssi;
++ break;
+ case IEEE80211_PARAM_MCASTCIPHER:
+ param[0] = rsn->rsn_mcastcipher;
+ break;
+@@ -5384,6 +5396,14 @@
+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "protmode" },
+ { IEEE80211_PARAM_PROTMODE,
+ 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_protmode" },
++ { IEEE80211_PARAM_PROTMODE_RSSI,
++ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "protrssi" },
++ { IEEE80211_PARAM_PROTMODE_RSSI,
++ 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_protrssi" },
++ { IEEE80211_PARAM_PROTMODE_TIMEOUT,
++ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "prottime" },
++ { IEEE80211_PARAM_PROTMODE_TIMEOUT,
++ 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_prottime" },
+ { IEEE80211_PARAM_MCASTCIPHER,
+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "mcastcipher" },
+ { IEEE80211_PARAM_MCASTCIPHER,
+Index: madwifi-trunk-r3776/net80211/ieee80211_node.c
+===================================================================
+--- madwifi-trunk-r3776.orig/net80211/ieee80211_node.c 2008-07-17 02:20:51.000000000 +0200
++++ madwifi-trunk-r3776/net80211/ieee80211_node.c 2008-07-17 02:56:18.000000000 +0200
+@@ -1591,6 +1591,17 @@
+
+ ieee80211_scan_timeout(ic);
+ ieee80211_timeout_stations(&ic->ic_sta);
++ if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
++ (ic->ic_protmode_lasttrig + ic->ic_protmode_timeout * HZ <
++ jiffies)) {
++ struct ieee80211vap *tmpvap;
++
++ /* expire protection mode */
++ ic->ic_flags &= ~IEEE80211_F_USEPROT;
++ TAILQ_FOREACH(tmpvap, &ic->ic_vaps, iv_next) {
++ tmpvap->iv_flags_ext |= IEEE80211_FEXT_ERPUPDATE;
++ }
++ }
+
+ mod_timer(&ic->ic_inact, jiffies + IEEE80211_INACT_WAIT * HZ);
+ }
projects / openwrt.git / blobdiff