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94 lines
3.8 KiB
Diff
94 lines
3.8 KiB
Diff
Add an optional threshold for low-rssi disconnection. This can be useful
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when letting wpa_supplicant control roaming.
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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--- a/net80211/ieee80211_ioctl.h
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+++ b/net80211/ieee80211_ioctl.h
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@@ -647,6 +647,8 @@ enum {
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IEEE80211_PARAM_PROTMODE_RSSI = 77, /* RSSI Threshold for enabling protection mode */
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IEEE80211_PARAM_PROTMODE_TIMEOUT = 78, /* Timeout for expiring protection mode */
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IEEE80211_PARAM_BGSCAN_THRESH = 79, /* bg scan rssi threshold */
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+ IEEE80211_PARAM_RSSI_DIS_THR = 80, /* rssi threshold for disconnection */
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+ IEEE80211_PARAM_RSSI_DIS_COUNT = 81, /* counter for rssi threshold */
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};
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#define SIOCG80211STATS (SIOCDEVPRIVATE+2)
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--- a/net80211/ieee80211_wireless.c
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+++ b/net80211/ieee80211_wireless.c
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@@ -2799,6 +2799,12 @@ ieee80211_ioctl_setparam(struct net_devi
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case IEEE80211_PARAM_ROAM_RATE_11G:
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vap->iv_roam.rate11b = value;
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break;
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+ case IEEE80211_PARAM_RSSI_DIS_THR:
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+ vap->iv_rssi_dis_thr = value;
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+ break;
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+ case IEEE80211_PARAM_RSSI_DIS_COUNT:
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+ vap->iv_rssi_dis_max = value;
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+ break;
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case IEEE80211_PARAM_UAPSDINFO:
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if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
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if (ic->ic_caps & IEEE80211_C_UAPSD) {
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@@ -3184,6 +3190,12 @@ ieee80211_ioctl_getparam(struct net_devi
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case IEEE80211_PARAM_ROAM_RATE_11G:
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param[0] = vap->iv_roam.rate11b;
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break;
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+ case IEEE80211_PARAM_RSSI_DIS_THR:
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+ param[0] = vap->iv_rssi_dis_thr;
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+ break;
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+ case IEEE80211_PARAM_RSSI_DIS_COUNT:
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+ param[0] = vap->iv_rssi_dis_max;
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+ break;
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case IEEE80211_PARAM_UAPSDINFO:
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if (vap->iv_opmode == IEEE80211_M_HOSTAP) {
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if (IEEE80211_VAP_UAPSD_ENABLED(vap))
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@@ -5733,6 +5745,14 @@ static const struct iw_priv_args ieee802
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IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "rate11g" },
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{ IEEE80211_PARAM_ROAM_RATE_11G,
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0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_rate11g" },
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+ { IEEE80211_PARAM_RSSI_DIS_THR,
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+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "rssi_disthr" },
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+ { IEEE80211_PARAM_RSSI_DIS_THR,
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+ 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_rssi_disthr" },
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+ { IEEE80211_PARAM_RSSI_DIS_COUNT,
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+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "rssi_discnt" },
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+ { IEEE80211_PARAM_RSSI_DIS_COUNT,
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+ 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_rssi_discnt" },
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{ IEEE80211_PARAM_UAPSDINFO,
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IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "uapsd" },
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{ IEEE80211_PARAM_UAPSDINFO,
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--- a/net80211/ieee80211_input.c
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+++ b/net80211/ieee80211_input.c
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@@ -3261,6 +3261,19 @@ ieee80211_recv_mgmt(struct ieee80211vap
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memcpy(ni->ni_tstamp.data, scan.tstamp,
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sizeof(ni->ni_tstamp));
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+ /* when rssi falls below the disconnection threshold, drop the connection */
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+ if ((vap->iv_rssi_dis_thr > 0) && (vap->iv_rssi_dis_max > 0)) {
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+ if ((rssi > 0) && (rssi < vap->iv_rssi_dis_thr)) {
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+ if (++vap->iv_rssi_dis_trig > vap->iv_rssi_dis_max) {
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+ vap->iv_rssi_dis_trig = 0;
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+ ieee80211_node_leave(ni);
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+ return;
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+ }
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+ } else {
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+ vap->iv_rssi_dis_trig = 0;
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+ }
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+ }
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+
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/* When rssi is low, start doing bgscans more frequently to allow
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* the supplicant to make a better switching decision */
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if (!(ic->ic_flags & IEEE80211_F_SCAN) && (rssi < vap->iv_bgscanthr) &&
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--- a/net80211/ieee80211_var.h
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+++ b/net80211/ieee80211_var.h
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@@ -223,6 +223,9 @@ struct ieee80211vap {
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u_int iv_bgscanintvl; /* bg scan min interval */
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u_int iv_bgscanthr; /* bg scan rssi threshold */
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u_int iv_bgscantrintvl; /* bg scan trigger interval */
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+ u_int iv_rssi_dis_thr; /* rssi disassoc threshold */
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+ u_int iv_rssi_dis_max; /* max beacons below disconnect threshold */
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+ u_int iv_rssi_dis_trig; /* rssi disassoc trigger count */
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unsigned long iv_bgscanthr_next; /* last trigger for bgscan */
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unsigned long iv_lastconnect; /* time of last connect attempt */
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u_int iv_scanvalid; /* scan cache valid threshold */
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