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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-07-12 22:24:45 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-07-12 22:24:45 +0000
commit75760cfbe94c67352d65f18fc2b307e5035b1f88 (patch)
tree79781c85f21d5cf4e0055ca8dbb9c93fd64903c9
parenta0c3d0fe7c58c4ba580deba4347758bd8ce25cb3 (diff)
madwifi: add an optional threshold for low-rssi disconnection. This can be useful when letting wpa_supplicant control roaming.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11799 3c298f89-4303-0410-b956-a3cf2f4a3e73
-rw-r--r--package/madwifi/patches/362-rssithr.patch91
1 files changed, 91 insertions, 0 deletions
diff --git a/package/madwifi/patches/362-rssithr.patch b/package/madwifi/patches/362-rssithr.patch
new file mode 100644
index 000000000..137e64ad5
--- /dev/null
+++ b/package/madwifi/patches/362-rssithr.patch
@@ -0,0 +1,91 @@
+Add an optional threshold for low-rssi disconnection. This can be useful
+when letting wpa_supplicant control roaming.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+--- a/net80211/ieee80211_ioctl.h
++++ b/net80211/ieee80211_ioctl.h
+@@ -647,6 +647,8 @@
+ IEEE80211_PARAM_PROTMODE_RSSI = 77, /* RSSI Threshold for enabling protection mode */
+ IEEE80211_PARAM_PROTMODE_TIMEOUT = 78, /* Timeout for expiring protection mode */
+ IEEE80211_PARAM_BGSCAN_THRESH = 79, /* bg scan rssi threshold */
++ IEEE80211_PARAM_RSSI_DIS_THR = 80, /* rssi threshold for disconnection */
++ IEEE80211_PARAM_RSSI_DIS_COUNT = 81, /* counter for rssi threshold */
+ };
+
+ #define SIOCG80211STATS (SIOCDEVPRIVATE+2)
+--- a/net80211/ieee80211_wireless.c
++++ b/net80211/ieee80211_wireless.c
+@@ -2798,6 +2798,12 @@
+ case IEEE80211_PARAM_ROAM_RATE_11G:
+ vap->iv_roam.rate11b = value;
+ break;
++ case IEEE80211_PARAM_RSSI_DIS_THR:
++ vap->iv_rssi_dis_thr = value;
++ break;
++ case IEEE80211_PARAM_RSSI_DIS_COUNT:
++ vap->iv_rssi_dis_max = value;
++ break;
+ case IEEE80211_PARAM_UAPSDINFO:
+ if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
+ if (ic->ic_caps & IEEE80211_C_UAPSD) {
+@@ -3183,6 +3189,12 @@
+ case IEEE80211_PARAM_ROAM_RATE_11G:
+ param[0] = vap->iv_roam.rate11b;
+ break;
++ case IEEE80211_PARAM_RSSI_DIS_THR:
++ param[0] = vap->iv_rssi_dis_thr;
++ break;
++ case IEEE80211_PARAM_RSSI_DIS_COUNT:
++ param[0] = vap->iv_rssi_dis_max;
++ break;
+ case IEEE80211_PARAM_UAPSDINFO:
+ if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
+ if (IEEE80211_VAP_UAPSD_ENABLED(vap))
+@@ -5732,6 +5744,14 @@
+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "rate11g" },
+ { IEEE80211_PARAM_ROAM_RATE_11G,
+ 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_rate11g" },
++ { IEEE80211_PARAM_RSSI_DIS_THR,
++ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "rssi_disthr" },
++ { IEEE80211_PARAM_RSSI_DIS_THR,
++ 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_rssi_disthr" },
++ { IEEE80211_PARAM_RSSI_DIS_COUNT,
++ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "rssi_discnt" },
++ { IEEE80211_PARAM_RSSI_DIS_COUNT,
++ 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_rssi_discnt" },
+ { IEEE80211_PARAM_UAPSDINFO,
+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "uapsd" },
+ { IEEE80211_PARAM_UAPSDINFO,
+--- a/net80211/ieee80211_input.c
++++ b/net80211/ieee80211_input.c
+@@ -3263,6 +3263,17 @@
+
+ /* When rssi is low, start doing bgscans more frequently to allow
+ * the supplicant to make a better switching decision */
++ if ((vap->iv_rssi_dis_thr > 0) && (vap->iv_rssi_dis_max > 0)) {
++ if ((rssi > 0) && (rssi < vap->iv_rssi_dis_thr)) {
++ if (++vap->iv_rssi_dis_trig > vap->iv_rssi_dis_max) {
++ vap->iv_rssi_dis_trig = 0;
++ ieee80211_node_leave(ni);
++ return;
++ }
++ } else {
++ vap->iv_rssi_dis_trig = 0;
++ }
++ }
+ if ((rssi < vap->iv_bgscanthr) &&
+ (!vap->iv_bgscanthr_next ||
+ !time_before(jiffies, vap->iv_bgscanthr_next)) &&
+--- a/net80211/ieee80211_var.h
++++ b/net80211/ieee80211_var.h
+@@ -223,6 +223,9 @@
+ u_int iv_bgscanintvl; /* bg scan min interval */
+ u_int iv_bgscanthr; /* bg scan rssi threshold */
+ u_int iv_bgscantrintvl; /* bg scan trigger interval */
++ u_int iv_rssi_dis_thr; /* rssi disassoc threshold */
++ u_int iv_rssi_dis_max; /* max beacons below disconnect threshold */
++ u_int iv_rssi_dis_trig; /* rssi disassoc trigger count */
+ unsigned long iv_bgscanthr_next; /* last trigger for bgscan */
+ u_int iv_scanvalid; /* scan cache valid threshold */
+ struct ieee80211_roam iv_roam; /* sta-mode roaming state */