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--- a/net80211/ieee80211.c
+++ b/net80211/ieee80211.c
@@ -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);
--- a/net80211/ieee80211_input.c
+++ b/net80211/ieee80211_input.c
@@ -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;
}
}
--- a/net80211/ieee80211_ioctl.h
+++ b/net80211/ieee80211_ioctl.h
@@ -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)
--- a/net80211/ieee80211_var.h
+++ b/net80211/ieee80211_var.h
@@ -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:
*
--- a/net80211/ieee80211_wireless.c
+++ b/net80211/ieee80211_wireless.c
@@ -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,
--- a/net80211/ieee80211_node.c
+++ b/net80211/ieee80211_node.c
@@ -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);
}
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