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mac80211: share STA information with driver

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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>
This commit is contained in:
Johannes Berg
2008-09-11 00:02:02 +02:00
committed by John W. Linville
parent 8aa21e6fd7
commit 17741cdc26
23 changed files with 189 additions and 127 deletions
Download Patch File Download Diff File Expand all files Collapse all files

59
net/mac80211/sta_info.c
View File

@@ -73,11 +73,11 @@ static int sta_info_hash_del(struct ieee80211_local *local,
{
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 @@ static int sta_info_hash_del(struct ieee80211_local *local,
/* 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 @@ static void __sta_info_free(struct ieee80211_local *local,
#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 @@ void sta_info_destroy(struct sta_info *sta)
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 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
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 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
#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 @@ int sta_info_insert(struct sta_info *sta)
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 @@ int sta_info_insert(struct sta_info *sta)
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 @@ static void __sta_info_set_tim_bit(struct ieee80211_if_ap *bss,
{
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 @@ static void __sta_info_clear_tim_bit(struct ieee80211_if_ap *bss,
{
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 @@ static void __sta_info_unlink(struct sta_info **sta)
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 @@ static void __sta_info_unlink(struct sta_info **sta)
#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 @@ static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
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 @@ void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
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 @@ void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
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);