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--- a/net80211/ieee80211_var.h
+++ b/net80211/ieee80211_var.h
@@ -198,6 +198,7 @@ struct ieee80211vap {
u_int32_t iv_debug; /* debug msg flags */
struct ieee80211_stats iv_stats; /* statistics */
+ int iv_max_nodes;
int iv_monitor_nods_only; /* in monitor mode only nods traffic */
int iv_monitor_txf_len; /* in monitor mode, truncate tx packets */
int iv_monitor_phy_errors; /* in monitor mode, accept phy errors */
--- a/net80211/ieee80211_ioctl.h
+++ b/net80211/ieee80211_ioctl.h
@@ -650,6 +650,7 @@ enum {
IEEE80211_PARAM_RSSI_DIS_THR = 80, /* rssi threshold for disconnection */
IEEE80211_PARAM_RSSI_DIS_COUNT = 81, /* counter for rssi threshold */
IEEE80211_PARAM_WDS_SEP = 82, /* move wds stations into separate interfaces */
+ IEEE80211_PARAM_MAXASSOC = 83, /* maximum associated stations */
};
#define SIOCG80211STATS (SIOCDEVPRIVATE+2)
--- a/net80211/ieee80211_wireless.c
+++ b/net80211/ieee80211_wireless.c
@@ -2875,6 +2875,12 @@ ieee80211_ioctl_setparam(struct net_devi
else
vap->iv_flags_ext &= ~IEEE80211_FEXT_WDSSEP;
break;
+ case IEEE80211_PARAM_MAXASSOC:
+ if (vap->iv_opmode != IEEE80211_M_HOSTAP)
+ retv = -EINVAL;
+ else
+ vap->iv_max_nodes = value;
+ break;
#ifdef ATH_REVERSE_ENGINEERING
case IEEE80211_PARAM_DUMPREGS:
ieee80211_dump_registers(dev, info, w, extra);
@@ -3234,6 +3240,9 @@ ieee80211_ioctl_getparam(struct net_devi
case IEEE80211_PARAM_WDS_SEP:
param[0] = !!(vap->iv_flags_ext & IEEE80211_FEXT_WDSSEP);
break;
+ case IEEE80211_PARAM_MAXASSOC:
+ param[0] = vap->iv_max_nodes;
+ break;
default:
return -EOPNOTSUPP;
}
@@ -5789,6 +5798,10 @@ static const struct iw_priv_args ieee802
IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "wdssep"},
{ IEEE80211_PARAM_WDS_SEP,
0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_wdssep"},
+ { IEEE80211_PARAM_MAXASSOC,
+ IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "maxassoc"},
+ { IEEE80211_PARAM_MAXASSOC,
+ 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_maxassoc"},
#ifdef ATH_REVERSE_ENGINEERING
/*
--- a/net80211/ieee80211_input.c
+++ b/net80211/ieee80211_input.c
@@ -4020,7 +4020,26 @@ ieee80211_recv_mgmt(struct ieee80211vap
vap->iv_stats.is_rx_assoc_norate++;
return;
}
+ if (vap->iv_max_nodes > 0) {
+ unsigned int active_nodes = 0;
+ struct ieee80211_node *tni;
+ IEEE80211_NODE_TABLE_LOCK_IRQ(&ic->ic_sta);
+ TAILQ_FOREACH(tni, &ic->ic_sta.nt_node, ni_list) {
+ if (tni->ni_vap != vap)
+ continue;
+ if (tni->ni_associd == 0)
+ continue;
+ active_nodes++;
+ }
+ IEEE80211_NODE_TABLE_UNLOCK_IRQ(&ic->ic_sta);
+
+ if (active_nodes >= vap->iv_max_nodes) {
+ /* too many nodes connected */
+ ieee80211_node_leave(ni);
+ return;
+ }
+ }
if (ni->ni_associd != 0 &&
IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan)) {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
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