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mac80211: assign bss_conf.bssid only once

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Instead of checking every time bss_info_changed is called,
assign the pointer once depending on the interface type
and then leave it untouched until the interface type is
changed. This makes the ieee80211_bss_info_change_notify()
now a simple wrapper to call the driver only.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2012-12-14 14:34:25 +01:00
parent b8dc1a35c8
commit ad2d223aa9
5 changed files with 15 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
net/mac80211/driver-ops.h
View file

@ -212,6 +212,8 @@ static inline void drv_bss_info_changed(struct ieee80211_local *local,
sdata->vif.type != NL80211_IFTYPE_AP &&
sdata->vif.type != NL80211_IFTYPE_ADHOC &&
sdata->vif.type != NL80211_IFTYPE_MESH_POINT);
WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE &&
changed & ~BSS_CHANGED_IDLE);
check_sdata_in_driver(sdata);

7
net/mac80211/iface.c
View file

@ -1227,6 +1227,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
case NL80211_IFTYPE_AP:
skb_queue_head_init(&sdata->u.ap.ps.bc_buf);
INIT_LIST_HEAD(&sdata->u.ap.vlans);
sdata->vif.bss_conf.bssid = sdata->vif.addr;
break;
case NL80211_IFTYPE_P2P_CLIENT:
type = NL80211_IFTYPE_STATION;
@ -1234,9 +1235,11 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
sdata->vif.p2p = true;
/* fall through */
case NL80211_IFTYPE_STATION:
sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
ieee80211_sta_setup_sdata(sdata);
break;
case NL80211_IFTYPE_ADHOC:
sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
ieee80211_ibss_setup_sdata(sdata);
break;
case NL80211_IFTYPE_MESH_POINT:
@ -1250,8 +1253,12 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
MONITOR_FLAG_OTHER_BSS;
break;
case NL80211_IFTYPE_WDS:
sdata->vif.bss_conf.bssid = NULL;
break;
case NL80211_IFTYPE_AP_VLAN:
break;
case NL80211_IFTYPE_P2P_DEVICE:
sdata->vif.bss_conf.bssid = sdata->vif.addr;
break;
case NL80211_IFTYPE_UNSPECIFIED:
case NUM_NL80211_IFTYPES:

20
net/mac80211/main.c
View file

@ -207,30 +207,10 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
u32 changed)
{
struct ieee80211_local *local = sdata->local;
static const u8 zero[ETH_ALEN] = { 0 };
if (!changed)
return;
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
else if (sdata->vif.type == NL80211_IFTYPE_AP)
sdata->vif.bss_conf.bssid = sdata->vif.addr;
else if (sdata->vif.type == NL80211_IFTYPE_WDS)
sdata->vif.bss_conf.bssid = NULL;
else if (ieee80211_vif_is_mesh(&sdata->vif)) {
sdata->vif.bss_conf.bssid = zero;
} else if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) {
sdata->vif.bss_conf.bssid = sdata->vif.addr;
WARN_ONCE(changed & ~(BSS_CHANGED_IDLE),
"P2P Device BSS changed %#x", changed);
} else {
WARN_ON(1);
return;
}
drv_bss_info_changed(local, sdata, &sdata->vif.bss_conf, changed);
}

3
net/mac80211/mesh.c
View file

@ -810,6 +810,7 @@ void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
static u8 zero_addr[ETH_ALEN] = {};
setup_timer(&ifmsh->housekeeping_timer,
ieee80211_mesh_housekeeping_timer,
@ -835,4 +836,6 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
INIT_LIST_HEAD(&ifmsh->preq_queue.list);
spin_lock_init(&ifmsh->mesh_preq_queue_lock);
spin_lock_init(&ifmsh->sync_offset_lock);
sdata->vif.bss_conf.bssid = zero_addr;
}

3
net/mac80211/pm.c
View file

@ -121,6 +121,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
/* remove all interfaces */
list_for_each_entry(sdata, &local->interfaces, list) {
static u8 zero_addr[ETH_ALEN] = {};
u32 changed = 0;
if (!ieee80211_sdata_running(sdata))
@ -152,6 +153,8 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
sdata->suspend_bss_conf = sdata->vif.bss_conf;
memset(&sdata->vif.bss_conf, 0, sizeof(sdata->vif.bss_conf));
sdata->vif.bss_conf.idle = true;
if (sdata->suspend_bss_conf.bssid)
sdata->vif.bss_conf.bssid = zero_addr;
/* disable beaconing or remove association */
ieee80211_bss_info_change_notify(sdata, changed);