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Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r--net/mac80211/mlme.c26
1 files changed, 19 insertions, 7 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 7ecda9d59d8..1619e0cd26e 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -441,6 +441,9 @@ static bool ieee80211_check_tim(struct ieee802_11_elems *elems, u16 aid)
u8 index, indexn1, indexn2;
struct ieee80211_tim_ie *tim = (struct ieee80211_tim_ie *) elems->tim;
+ if (unlikely(!tim || elems->tim_len < 4))
+ return false;
+
aid &= 0x3fff;
index = aid / 8;
mask = 1 << (aid & 7);
@@ -945,9 +948,13 @@ void ieee80211_beacon_loss_work(struct work_struct *work)
u.mgd.beacon_loss_work);
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- printk(KERN_DEBUG "%s: driver reports beacon loss from AP %pM "
- "- sending probe request\n", sdata->dev->name,
- sdata->u.mgd.bssid);
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: driver reports beacon loss from AP %pM "
+ "- sending probe request\n", sdata->dev->name,
+ sdata->u.mgd.bssid);
+ }
+#endif
ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL;
ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid,
@@ -1007,9 +1014,13 @@ static void ieee80211_associated(struct ieee80211_sub_if_data *sdata)
(local->hw.conf.flags & IEEE80211_CONF_PS)) &&
time_after(jiffies,
ifmgd->last_beacon + IEEE80211_MONITORING_INTERVAL)) {
- printk(KERN_DEBUG "%s: beacon loss from AP %pM "
- "- sending probe request\n",
- sdata->dev->name, ifmgd->bssid);
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: beacon loss from AP %pM "
+ "- sending probe request\n",
+ sdata->dev->name, ifmgd->bssid);
+ }
+#endif
ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL;
ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid,
ifmgd->ssid_len, NULL, 0);
@@ -2105,12 +2116,13 @@ void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
struct ieee80211_local *local =
container_of(work, struct ieee80211_local,
dynamic_ps_enable_work);
+ /* XXX: using scan_sdata is completely broken! */
struct ieee80211_sub_if_data *sdata = local->scan_sdata;
if (local->hw.conf.flags & IEEE80211_CONF_PS)
return;
- if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
+ if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK && sdata)
ieee80211_send_nullfunc(local, sdata, 1);
local->hw.conf.flags |= IEEE80211_CONF_PS;