mac80211: clean up beacon interval settings
We currently have two beacon interval configuration knobs:
hw.conf.beacon_int and vif.bss_info.beacon_int. This is
rather confusing, even though the former is used when we
beacon ourselves and the latter when we are associated to
an AP.
This just deprecates the hw.conf.beacon_int setting in favour
of always using vif.bss_info.beacon_int. Since it touches all
the beaconing IBSS code anyway, we can also add support for
the cfg80211 IBSS beacon interval configuration easily.
NOTE: The hw.conf.beacon_int setting is retained for now due
to drivers still using it -- I couldn't untangle all
drivers, some are updated in this patch.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 5e1c230..a898ccd 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -451,18 +451,11 @@
* This is a kludge. beacon interval should really be part
* of the beacon information.
*/
- if (params->interval && (sdata->local->hw.conf.beacon_int !=
- params->interval)) {
- sdata->local->hw.conf.beacon_int = params->interval;
- err = ieee80211_hw_config(sdata->local,
- IEEE80211_CONF_CHANGE_BEACON_INTERVAL);
- if (err < 0)
- return err;
- /*
- * We updated some parameter so if below bails out
- * it's not an error.
- */
- err = 0;
+ if (params->interval &&
+ (sdata->vif.bss_conf.beacon_int != params->interval)) {
+ sdata->vif.bss_conf.beacon_int = params->interval;
+ ieee80211_bss_info_change_notify(sdata,
+ BSS_CHANGED_BEACON_INT);
}
/* Need to have a beacon head if we don't have one yet */
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 25ff583..f4879da 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -73,6 +73,7 @@
struct ieee80211_mgmt *mgmt;
u8 *pos;
struct ieee80211_supported_band *sband;
+ u32 bss_change;
if (local->ops->reset_tsf) {
/* Reset own TSF to allow time synchronization work. */
@@ -92,8 +93,6 @@
memcpy(ifibss->bssid, bssid, ETH_ALEN);
- local->hw.conf.beacon_int = beacon_int >= 10 ? beacon_int : 10;
-
sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
@@ -101,6 +100,12 @@
local->oper_channel = chan;
local->oper_channel_type = NL80211_CHAN_NO_HT;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+
+ sdata->vif.bss_conf.beacon_int = beacon_int;
+ bss_change = BSS_CHANGED_BEACON_INT;
+ bss_change |= ieee80211_reset_erp_info(sdata);
+ ieee80211_bss_info_change_notify(sdata, bss_change);
+
sband = local->hw.wiphy->bands[chan->band];
/* Build IBSS probe response */
@@ -111,7 +116,7 @@
memset(mgmt->da, 0xff, ETH_ALEN);
memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
- mgmt->u.beacon.beacon_int = cpu_to_le16(local->hw.conf.beacon_int);
+ mgmt->u.beacon.beacon_int = cpu_to_le16(beacon_int);
mgmt->u.beacon.timestamp = cpu_to_le64(tsf);
mgmt->u.beacon.capab_info = cpu_to_le16(capability);
@@ -181,8 +186,13 @@
static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_bss *bss)
{
+ u16 beacon_int = bss->cbss.beacon_interval;
+
+ if (beacon_int < 10)
+ beacon_int = 10;
+
__ieee80211_sta_join_ibss(sdata, bss->cbss.bssid,
- bss->cbss.beacon_interval,
+ beacon_int,
bss->cbss.channel,
bss->supp_rates_len, bss->supp_rates,
bss->cbss.capability,
@@ -464,9 +474,6 @@
sband = local->hw.wiphy->bands[ifibss->channel->band];
- if (local->hw.conf.beacon_int == 0)
- local->hw.conf.beacon_int = 100;
-
capability = WLAN_CAPABILITY_IBSS;
if (sdata->default_key)
@@ -480,7 +487,7 @@
*pos++ = (u8) (rate / 5);
}
- __ieee80211_sta_join_ibss(sdata, bssid, local->hw.conf.beacon_int,
+ __ieee80211_sta_join_ibss(sdata, bssid, sdata->vif.bss_conf.beacon_int,
ifibss->channel, sband->n_bitrates,
supp_rates, capability, 0);
}
@@ -823,6 +830,8 @@
} else
sdata->u.ibss.fixed_bssid = false;
+ sdata->vif.bss_conf.beacon_int = params->beacon_interval;
+
sdata->u.ibss.channel = params->channel;
sdata->u.ibss.fixed_channel = params->channel_fixed;
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index e00d124..b254879 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -294,9 +294,6 @@
{
struct ieee80211_local *local = sdata->local;
- if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN))
- return;
-
if (!changed)
return;
@@ -305,6 +302,17 @@
&sdata->vif,
&sdata->vif.bss_conf,
changed);
+
+ /*
+ * DEPRECATED
+ *
+ * ~changed is just there to not do this at resume time
+ */
+ if (changed & BSS_CHANGED_BEACON_INT && ~changed) {
+ local->hw.conf.beacon_int = sdata->vif.bss_conf.beacon_int;
+ ieee80211_hw_config(local,
+ _IEEE80211_CONF_CHANGE_BEACON_INTERVAL);
+ }
}
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
@@ -971,9 +979,6 @@
debugfs_hw_add(local);
- if (local->hw.conf.beacon_int < 10)
- local->hw.conf.beacon_int = 100;
-
if (local->hw.max_listen_interval == 0)
local->hw.max_listen_interval = 1;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index a2f5e62..bfd571e 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -842,6 +842,7 @@
sdata->vif.bss_conf.timestamp = bss->cbss.tsf;
sdata->vif.bss_conf.dtim_period = bss->dtim_period;
+ bss_info_changed |= BSS_CHANGED_BEACON_INT;
bss_info_changed |= ieee80211_handle_bss_capability(sdata,
bss->cbss.capability, bss->has_erp_value, bss->erp_value);
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 654a8e9..7116220 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -543,9 +543,8 @@
spin_unlock_irqrestore(&local->sta_lock, flags);
}
-static inline int sta_info_buffer_expired(struct ieee80211_local *local,
- struct sta_info *sta,
- struct sk_buff *skb)
+static int sta_info_buffer_expired(struct sta_info *sta,
+ struct sk_buff *skb)
{
struct ieee80211_tx_info *info;
int timeout;
@@ -556,8 +555,9 @@
info = IEEE80211_SKB_CB(skb);
/* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */
- timeout = (sta->listen_interval * local->hw.conf.beacon_int * 32 /
- 15625) * HZ;
+ timeout = (sta->listen_interval *
+ sta->sdata->vif.bss_conf.beacon_int *
+ 32 / 15625) * HZ;
if (timeout < STA_TX_BUFFER_EXPIRE)
timeout = STA_TX_BUFFER_EXPIRE;
return time_after(jiffies, info->control.jiffies + timeout);
@@ -577,7 +577,7 @@
for (;;) {
spin_lock_irqsave(&sta->ps_tx_buf.lock, flags);
skb = skb_peek(&sta->ps_tx_buf);
- if (sta_info_buffer_expired(local, sta, skb))
+ if (sta_info_buffer_expired(sta, skb))
skb = __skb_dequeue(&sta->ps_tx_buf);
else
skb = NULL;
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 1865622..29df650 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -2132,7 +2132,7 @@
memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
/* BSSID is left zeroed, wildcard value */
mgmt->u.beacon.beacon_int =
- cpu_to_le16(local->hw.conf.beacon_int);
+ cpu_to_le16(sdata->vif.bss_conf.beacon_int);
mgmt->u.beacon.capab_info = 0x0; /* 0x0 for MPs */
pos = skb_put(skb, 2);