mac80211: add separate last_ack variable

[cascardo/linux.git] / net / mac80211 / ibss.c

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 978d3bc..c6d4b75 100644 (file)
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -7,6 +7,7 @@
  * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
  * Copyright 2009, Johannes Berg <johannes@sipsolutions.net>
  * Copyright 2013-2014  Intel Mobile Communications GmbH
+ * Copyright(c) 2016 Intel Deutschland GmbH
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -648,8 +649,6 @@ ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, const u8 *bssid,
                return NULL;
        }
 
-       sta->rx_stats.last_rx = jiffies;
-
        /* make sure mandatory rates are always added */
        sband = local->hw.wiphy->bands[band];
        sta->sta.supp_rates[band] = supp_rates |
@@ -669,10 +668,11 @@ static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata)
        rcu_read_lock();
 
        list_for_each_entry_rcu(sta, &local->sta_list, list) {
+               unsigned long last_active = ieee80211_sta_last_active(sta);
+
                if (sta->sdata == sdata &&
-                   time_after(sta->rx_stats.last_rx +
-                              IEEE80211_IBSS_MERGE_INTERVAL,
-                              jiffies)) {
+                   time_is_after_jiffies(last_active +
+                                         IEEE80211_IBSS_MERGE_INTERVAL)) {
                        active++;
                        break;
                }
@@ -1050,9 +1050,8 @@ static void ieee80211_update_sta_info(struct ieee80211_sub_if_data *sdata,
                struct cfg80211_chan_def chandef;
                enum ieee80211_sta_rx_bandwidth bw = sta->sta.bandwidth;
 
-               ieee80211_ht_oper_to_chandef(channel,
-                                            elems->ht_operation,
-                                            &chandef);
+               cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
+               ieee80211_chandef_ht_oper(elems->ht_operation, &chandef);
 
                memcpy(&htcap_ie, elems->ht_cap_elem, sizeof(htcap_ie));
                rates_updated |= ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
@@ -1066,9 +1065,8 @@ static void ieee80211_update_sta_info(struct ieee80211_sub_if_data *sdata,
                        struct ieee80211_vht_cap cap_ie;
                        struct ieee80211_sta_vht_cap cap = sta->sta.vht_cap;
 
-                       ieee80211_vht_oper_to_chandef(channel,
-                                                     elems->vht_operation,
-                                                     &chandef);
+                       ieee80211_chandef_vht_oper(elems->vht_operation,
+                                                  &chandef);
                        memcpy(&cap_ie, elems->vht_cap_elem, sizeof(cap_ie));
                        ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
                                                            &cap_ie, sta);
@@ -1237,8 +1235,6 @@ void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
        if (!sta)
                return;
 
-       sta->rx_stats.last_rx = jiffies;
-
        /* make sure mandatory rates are always added */
        sband = local->hw.wiphy->bands[band];
        sta->sta.supp_rates[band] = supp_rates |
@@ -1260,11 +1256,13 @@ static void ieee80211_ibss_sta_expire(struct ieee80211_sub_if_data *sdata)
        mutex_lock(&local->sta_mtx);
 
        list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
+               unsigned long last_active = ieee80211_sta_last_active(sta);
+
                if (sdata != sta->sdata)
                        continue;
 
-               if (time_after(jiffies, sta->rx_stats.last_rx + exp_time) ||
-                   (time_after(jiffies, sta->rx_stats.last_rx + exp_rsn) &&
+               if (time_is_before_jiffies(last_active + exp_time) ||
+                   (time_is_before_jiffies(last_active + exp_rsn) &&
                     sta->sta_state != IEEE80211_STA_AUTHORIZED)) {
                        sta_dbg(sta->sdata, "expiring inactive %sSTA %pM\n",
                                sta->sta_state != IEEE80211_STA_AUTHORIZED ?
@@ -1485,14 +1483,21 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
 
                sdata_info(sdata, "Trigger new scan to find an IBSS to join\n");
 
-               num = ieee80211_ibss_setup_scan_channels(local->hw.wiphy,
-                                                        &ifibss->chandef,
-                                                        channels,
-                                                        ARRAY_SIZE(channels));
                scan_width = cfg80211_chandef_to_scan_width(&ifibss->chandef);
-               ieee80211_request_ibss_scan(sdata, ifibss->ssid,
-                                           ifibss->ssid_len, channels, num,
-                                           scan_width);
+
+               if (ifibss->fixed_channel) {
+                       num = ieee80211_ibss_setup_scan_channels(local->hw.wiphy,
+                                                                &ifibss->chandef,
+                                                                channels,
+                                                                ARRAY_SIZE(channels));
+                       ieee80211_request_ibss_scan(sdata, ifibss->ssid,
+                                                   ifibss->ssid_len, channels,
+                                                   num, scan_width);
+               } else {
+                       ieee80211_request_ibss_scan(sdata, ifibss->ssid,
+                                                   ifibss->ssid_len, NULL,
+                                                   0, scan_width);
+               }
        } else {
                int interval = IEEE80211_SCAN_INTERVAL;