From 73663230c8534e9810da65abf54b9b2ab0d5699e Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 21 Apr 2008 03:45:39 +0000 Subject: [PATCH] madwifi: add configurable rssi threshold and timeout values for protection mode the 11b protection mode can harm throughput a lot, so let's make sure that it is only active as long as it needs to be. SVN-Revision: 10899 --- .../madwifi/patches/346-protmode_trig.patch | 139 ++++++++++++++++++ 1 file changed, 139 insertions(+) create mode 100644 package/madwifi/patches/346-protmode_trig.patch diff --git a/package/madwifi/patches/346-protmode_trig.patch b/package/madwifi/patches/346-protmode_trig.patch new file mode 100644 index 0000000000..cf28aaab4a --- /dev/null +++ b/package/madwifi/patches/346-protmode_trig.patch @@ -0,0 +1,139 @@ +Index: madwifi-trunk-r3314/net80211/ieee80211.c +=================================================================== +--- madwifi-trunk-r3314.orig/net80211/ieee80211.c 2008-04-21 05:22:20.000000000 +0200 ++++ madwifi-trunk-r3314/net80211/ieee80211.c 2008-04-21 05:23:46.000000000 +0200 +@@ -333,7 +333,9 @@ + 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-r3314/net80211/ieee80211_input.c +=================================================================== +--- madwifi-trunk-r3314.orig/net80211/ieee80211_input.c 2008-04-21 05:22:32.000000000 +0200 ++++ madwifi-trunk-r3314/net80211/ieee80211_input.c 2008-04-21 05:23:46.000000000 +0200 +@@ -3412,16 +3412,32 @@ + 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; + } + } ++ 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; ++ } ++ } ++ + + /* + * If scanning, just pass information to the scan module. +Index: madwifi-trunk-r3314/net80211/ieee80211_ioctl.h +=================================================================== +--- madwifi-trunk-r3314.orig/net80211/ieee80211_ioctl.h 2008-04-21 05:22:20.000000000 +0200 ++++ madwifi-trunk-r3314/net80211/ieee80211_ioctl.h 2008-04-21 05:23:46.000000000 +0200 +@@ -643,6 +643,8 @@ + IEEE80211_PARAM_BEACON_MISS_THRESH_MS = 74, /* Beacon miss threshold (in ms) */ + IEEE80211_PARAM_MAXRATE = 75, /* Maximum rate (by table index) */ + IEEE80211_PARAM_MINRATE = 76, /* Maximum rate (by table index) */ ++ IEEE80211_PARAM_PROTMODE_RSSI = 77, /* RSSI Threshold for enabling protection mode */ ++ IEEE80211_PARAM_PROTMODE_TIMEOUT = 78, /* Timeout for expiring protection mode */ + }; + + #define SIOCG80211STATS (SIOCDEVPRIVATE+2) +Index: madwifi-trunk-r3314/net80211/ieee80211_var.h +=================================================================== +--- madwifi-trunk-r3314.orig/net80211/ieee80211_var.h 2008-04-21 05:22:20.000000000 +0200 ++++ madwifi-trunk-r3314/net80211/ieee80211_var.h 2008-04-21 05:41:45.000000000 +0200 +@@ -128,6 +128,9 @@ + + #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) +@@ -324,6 +327,9 @@ + 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-r3314/net80211/ieee80211_wireless.c +=================================================================== +--- madwifi-trunk-r3314.orig/net80211/ieee80211_wireless.c 2008-04-21 05:22:20.000000000 +0200 ++++ madwifi-trunk-r3314/net80211/ieee80211_wireless.c 2008-04-21 05:23:46.000000000 +0200 +@@ -2312,6 +2312,12 @@ + IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan)) + retv = ENETRESET; + 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)) +@@ -2955,6 +2961,12 @@ + case IEEE80211_PARAM_PROTMODE: + param[0] = ic->ic_protmode; + 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; +@@ -5346,6 +5358,14 @@ + 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,