madwifi: reduce the packet loss impact of forced background scans triggered by the...

[openwrt/openwrt.git] / package / madwifi / patches / 362-rssithr.patch

diff --git a/package/madwifi/patches/362-rssithr.patch b/package/madwifi/patches/362-rssithr.patch
index 137e64ad524fee35889e5d95ba061ea42c9cb737..c1654d59b66cc2a6ad78d9afc5990d3e39c455c8 100644 (file)
--- a/package/madwifi/patches/362-rssithr.patch
+++ b/package/madwifi/patches/362-rssithr.patch
@@ -59,10 +59,11 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
        { IEEE80211_PARAM_UAPSDINFO,
 --- a/net80211/ieee80211_input.c
 +++ b/net80211/ieee80211_input.c
-@@ -3263,6 +3263,17 @@
+@@ -3261,6 +3261,19 @@
+                       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 */
++                      /* when rssi falls below the disconnection threshold, drop the connection */
 +                      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) {
@@ -74,9 +75,10 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 +                                      vap->iv_rssi_dis_trig = 0;
 +                              }
 +                      }
-                       if ((rssi < vap->iv_bgscanthr) &&
-                                       (!vap->iv_bgscanthr_next ||
-                                               !time_before(jiffies, vap->iv_bgscanthr_next)) &&
++
+                       /* When rssi is low, start doing bgscans more frequently to allow
+                        * the supplicant to make a better switching decision */
+                       if (!(ic->ic_flags & IEEE80211_F_SCAN) && (rssi < vap->iv_bgscanthr) &&
 --- a/net80211/ieee80211_var.h
 +++ b/net80211/ieee80211_var.h
 @@ -223,6 +223,9 @@
@@ -87,5 +89,5 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
 +      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 */
+       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 */