mac80211: share STA information with driver
This patch changes mac80211 to share some more data about
stations with drivers. Should help iwlwifi and ath9k when
they get around to updating, and might also help with
implementing rate control algorithms without internals.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 31246d8..d9774ac 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -73,11 +73,11 @@
{
struct sta_info *s;
- s = local->sta_hash[STA_HASH(sta->addr)];
+ s = local->sta_hash[STA_HASH(sta->sta.addr)];
if (!s)
return -ENOENT;
if (s == sta) {
- rcu_assign_pointer(local->sta_hash[STA_HASH(sta->addr)],
+ rcu_assign_pointer(local->sta_hash[STA_HASH(sta->sta.addr)],
s->hnext);
return 0;
}
@@ -94,13 +94,13 @@
/* protected by RCU */
static struct sta_info *__sta_info_find(struct ieee80211_local *local,
- u8 *addr)
+ const u8 *addr)
{
struct sta_info *sta;
sta = rcu_dereference(local->sta_hash[STA_HASH(addr)]);
while (sta) {
- if (compare_ether_addr(sta->addr, addr) == 0)
+ if (compare_ether_addr(sta->sta.addr, addr) == 0)
break;
sta = rcu_dereference(sta->hnext);
}
@@ -151,7 +151,7 @@
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
printk(KERN_DEBUG "%s: Destroyed STA %s\n",
- wiphy_name(local->hw.wiphy), print_mac(mbuf, sta->addr));
+ wiphy_name(local->hw.wiphy), print_mac(mbuf, sta->sta.addr));
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
kfree(sta);
@@ -219,8 +219,8 @@
static void sta_info_hash_add(struct ieee80211_local *local,
struct sta_info *sta)
{
- sta->hnext = local->sta_hash[STA_HASH(sta->addr)];
- rcu_assign_pointer(local->sta_hash[STA_HASH(sta->addr)], sta);
+ sta->hnext = local->sta_hash[STA_HASH(sta->sta.addr)];
+ rcu_assign_pointer(local->sta_hash[STA_HASH(sta->sta.addr)], sta);
}
struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
@@ -231,14 +231,14 @@
int i;
DECLARE_MAC_BUF(mbuf);
- sta = kzalloc(sizeof(*sta), gfp);
+ sta = kzalloc(sizeof(*sta) + local->hw.sta_data_size, gfp);
if (!sta)
return NULL;
spin_lock_init(&sta->lock);
spin_lock_init(&sta->flaglock);
- memcpy(sta->addr, addr, ETH_ALEN);
+ memcpy(sta->sta.addr, addr, ETH_ALEN);
sta->local = local;
sta->sdata = sdata;
@@ -271,7 +271,7 @@
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
printk(KERN_DEBUG "%s: Allocated STA %s\n",
- wiphy_name(local->hw.wiphy), print_mac(mbuf, sta->addr));
+ wiphy_name(local->hw.wiphy), print_mac(mbuf, sta->sta.addr));
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
#ifdef CONFIG_MAC80211_MESH
@@ -300,15 +300,15 @@
goto out_free;
}
- if (WARN_ON(compare_ether_addr(sta->addr, sdata->dev->dev_addr) == 0 ||
- is_multicast_ether_addr(sta->addr))) {
+ if (WARN_ON(compare_ether_addr(sta->sta.addr, sdata->dev->dev_addr) == 0 ||
+ is_multicast_ether_addr(sta->sta.addr))) {
err = -EINVAL;
goto out_free;
}
spin_lock_irqsave(&local->sta_lock, flags);
/* check if STA exists already */
- if (__sta_info_find(local, sta->addr)) {
+ if (__sta_info_find(local, sta->sta.addr)) {
spin_unlock_irqrestore(&local->sta_lock, flags);
err = -EEXIST;
goto out_free;
@@ -325,12 +325,12 @@
u.ap);
local->ops->sta_notify(local_to_hw(local), &sdata->vif,
- STA_NOTIFY_ADD, sta->addr);
+ STA_NOTIFY_ADD, &sta->sta);
}
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
printk(KERN_DEBUG "%s: Inserted STA %s\n",
- wiphy_name(local->hw.wiphy), print_mac(mac, sta->addr));
+ wiphy_name(local->hw.wiphy), print_mac(mac, sta->sta.addr));
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
spin_unlock_irqrestore(&local->sta_lock, flags);
@@ -379,11 +379,12 @@
{
BUG_ON(!bss);
- __bss_tim_set(bss, sta->aid);
+ __bss_tim_set(bss, sta->sta.aid);
if (sta->local->ops->set_tim) {
sta->local->tim_in_locked_section = true;
- sta->local->ops->set_tim(local_to_hw(sta->local), sta->aid, 1);
+ sta->local->ops->set_tim(local_to_hw(sta->local),
+ &sta->sta, true);
sta->local->tim_in_locked_section = false;
}
}
@@ -404,11 +405,12 @@
{
BUG_ON(!bss);
- __bss_tim_clear(bss, sta->aid);
+ __bss_tim_clear(bss, sta->sta.aid);
if (sta->local->ops->set_tim) {
sta->local->tim_in_locked_section = true;
- sta->local->ops->set_tim(local_to_hw(sta->local), sta->aid, 0);
+ sta->local->ops->set_tim(local_to_hw(sta->local),
+ &sta->sta, false);
sta->local->tim_in_locked_section = false;
}
}
@@ -462,7 +464,7 @@
u.ap);
local->ops->sta_notify(local_to_hw(local), &sdata->vif,
- STA_NOTIFY_REMOVE, (*sta)->addr);
+ STA_NOTIFY_REMOVE, &(*sta)->sta);
}
if (ieee80211_vif_is_mesh(&sdata->vif)) {
@@ -474,7 +476,7 @@
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
printk(KERN_DEBUG "%s: Removed STA %s\n",
- wiphy_name(local->hw.wiphy), print_mac(mbuf, (*sta)->addr));
+ wiphy_name(local->hw.wiphy), print_mac(mbuf, (*sta)->sta.addr));
#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
/*
@@ -570,7 +572,7 @@
local->total_ps_buffered--;
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
printk(KERN_DEBUG "Buffered frame expired (STA "
- "%s)\n", print_mac(mac, sta->addr));
+ "%s)\n", print_mac(mac, sta->sta.addr));
#endif
dev_kfree_skb(skb);
@@ -817,7 +819,7 @@
if (time_after(jiffies, sta->last_rx + exp_time)) {
#ifdef CONFIG_MAC80211_IBSS_DEBUG
printk(KERN_DEBUG "%s: expiring inactive STA %s\n",
- sdata->dev->name, print_mac(mac, sta->addr));
+ sdata->dev->name, print_mac(mac, sta->sta.addr));
#endif
__sta_info_unlink(&sta);
if (sta)
@@ -828,3 +830,14 @@
list_for_each_entry_safe(sta, tmp, &tmp_list, list)
sta_info_destroy(sta);
}
+
+struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_hw *hw,
+ const u8 *addr)
+{
+ struct sta_info *sta = __sta_info_find(hw_to_local(hw), addr);
+
+ if (!sta)
+ return NULL;
+ return &sta->sta;
+}
+EXPORT_SYMBOL(ieee80211_find_sta);