--- a/net80211/ieee80211_ioctl.h
+++ b/net80211/ieee80211_ioctl.h
-@@ -646,6 +646,7 @@
- IEEE80211_PARAM_MINRATE = 76, /* Maximum rate (by table index) */
+@@ -646,6 +646,7 @@ enum {
+ IEEE80211_PARAM_MINRATE = 76, /* Minimum 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 */
+ IEEE80211_PARAM_BGSCAN_THRESH = 79, /* bg scan rssi threshold */
#define IEEE80211_COVERAGE_CLASS_MAX 31 /* max coverage class */
#define IEEE80211_REGCLASSIDS_MAX 10 /* max regclass id list */
-@@ -219,6 +221,9 @@
+@@ -219,6 +221,10 @@ struct ieee80211vap {
u_int8_t iv_nickname[IEEE80211_NWID_LEN];
u_int iv_bgscanidle; /* bg scan idle threshold */
u_int iv_bgscanintvl; /* bg scan min interval */
+ u_int iv_bgscanthr; /* bg scan rssi threshold */
+ u_int iv_bgscantrintvl; /* bg scan trigger interval */
+ unsigned long iv_bgscanthr_next; /* last trigger for bgscan */
++ unsigned long iv_lastconnect; /* time of last connect attempt */
u_int iv_scanvalid; /* scan cache valid threshold */
struct ieee80211_roam iv_roam; /* sta-mode roaming state */
-@@ -608,6 +613,7 @@
+@@ -608,6 +614,7 @@ MALLOC_DECLARE(M_80211_VAP);
#define IEEE80211_FEXT_SWBMISS 0x00000400 /* CONF: use software beacon timer */
#define IEEE80211_FEXT_DROPUNENC_EAPOL 0x00000800 /* CONF: drop unencrypted eapol frames */
#define IEEE80211_FEXT_APPIE_UPDATE 0x00001000 /* STATE: beacon APP IE updated */
#define IEEE80211_COM_UAPSD_DISABLE(_ic) ((_ic)->ic_flags_ext &= ~IEEE80211_FEXT_UAPSD)
--- a/net80211/ieee80211_wireless.c
+++ b/net80211/ieee80211_wireless.c
-@@ -2744,6 +2744,9 @@
+@@ -2744,6 +2744,9 @@ ieee80211_ioctl_setparam(struct net_devi
else
retv = EINVAL;
break;
case IEEE80211_PARAM_MCAST_RATE:
/* units are in KILObits per second */
if (value >= 256 && value <= 54000)
-@@ -3144,6 +3147,9 @@
+@@ -3144,6 +3147,9 @@ ieee80211_ioctl_getparam(struct net_devi
case IEEE80211_PARAM_BGSCAN_INTERVAL:
param[0] = vap->iv_bgscanintvl / HZ; /* seconds */
break;
case IEEE80211_PARAM_MCAST_RATE:
param[0] = vap->iv_mcast_rate; /* seconds */
break;
-@@ -5666,6 +5672,10 @@
+@@ -5666,6 +5672,10 @@ static const struct iw_priv_args ieee802
IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "bgscanintvl" },
{ IEEE80211_PARAM_BGSCAN_INTERVAL,
0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_bgscanintvl" },
{ IEEE80211_PARAM_MCAST_RATE,
--- a/net80211/ieee80211_input.c
+++ b/net80211/ieee80211_input.c
-@@ -3013,8 +3013,10 @@
+@@ -3013,8 +3013,10 @@ contbgscan(struct ieee80211vap *vap)
{
struct ieee80211com *ic = vap->iv_ic;
}
static __inline int
-@@ -3258,6 +3260,23 @@
+@@ -3258,6 +3260,25 @@ ieee80211_recv_mgmt(struct ieee80211vap
/* record tsf of last beacon */
memcpy(ni->ni_tstamp.data, scan.tstamp,
sizeof(ni->ni_tstamp));
+
+ /* When rssi is low, start doing bgscans more frequently to allow
+ * the supplicant to make a better switching decision */
-+ if ((rssi < vap->iv_bgscanthr) &&
++ if (!(ic->ic_flags & IEEE80211_F_SCAN) && (rssi < vap->iv_bgscanthr) &&
+ (!vap->iv_bgscanthr_next ||
+ !time_before(jiffies, vap->iv_bgscanthr_next)) &&
-+ !(ic->ic_flags & IEEE80211_F_SCAN)) {
++ (vap->iv_state == IEEE80211_S_RUN) &&
++ time_after(jiffies, vap->iv_lastconnect +
++ msecs_to_jiffies(IEEE80211_BGSCAN_INTVAL_MIN * 1000))) {
+ int ret;
+
+ ic->ic_lastdata = 0;
"beacon interval divergence: "
--- a/net80211/ieee80211_scan.c
+++ b/net80211/ieee80211_scan.c
-@@ -782,7 +782,7 @@
+@@ -616,6 +616,7 @@ ieee80211_cancel_scan(struct ieee80211va
+
+ /* clear bg scan NOPICK and mark cancel request */
+ ss->ss_flags &= ~IEEE80211_SCAN_NOPICK;
++ ic->ic_flags_ext &= ~IEEE80211_FEXT_BGSCAN_THR;
+ SCAN_PRIVATE(ss)->ss_iflags |= ISCAN_CANCEL;
+ ss->ss_ops->scan_cancel(ss, vap);
+ /* force it to fire asap */
+@@ -782,7 +783,7 @@ again:
ieee80211_sta_pwrsave(vap, 0);
if (ss->ss_next >= ss->ss_last) {
ieee80211_notify_scan_done(vap);
}
}
SCAN_PRIVATE(ss)->ss_iflags &= ~ISCAN_CANCEL;
+--- a/net80211/ieee80211_proto.c
++++ b/net80211/ieee80211_proto.c
+@@ -1450,6 +1450,7 @@ __ieee80211_newstate(struct ieee80211vap
+ }
+ break;
+ case IEEE80211_S_AUTH:
++ vap->iv_lastconnect = jiffies;
+ /* auth frames are possible between IBSS nodes,
+ * see 802.11-1999, chapter 5.7.6 */
+ KASSERT(vap->iv_opmode == IEEE80211_M_STA ||
+--- a/net80211/ieee80211_output.c
++++ b/net80211/ieee80211_output.c
+@@ -238,7 +238,8 @@ ieee80211_hardstart(struct sk_buff *skb,
+ }
+
+ /* Cancel any running BG scan */
+- ieee80211_cancel_scan(vap);
++ if (!(ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN_THR) && (vap->iv_state == IEEE80211_S_RUN))
++ ieee80211_cancel_scan(vap);
+
+ /*
+ * Find the node for the destination so we can do
projects / openwrt.git / blobdiff