* published by the Free Software Foundation.
*/
-/* TODO:
- * figure out how to avoid that the "current BSS" expires
- * use cfg80211's BSS handling
- */
+/* TODO: figure out how to avoid that the "current BSS" expires */
#include <linux/wireless.h>
#include <linux/if_arp.h>
#define IEEE80211_CHANNEL_TIME (HZ / 33)
#define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5)
-void ieee80211_rx_bss_list_init(struct ieee80211_local *local)
-{
- spin_lock_init(&local->bss_lock);
- INIT_LIST_HEAD(&local->bss_list);
-}
-
-void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local)
-{
- struct ieee80211_bss *bss, *tmp;
-
- list_for_each_entry_safe(bss, tmp, &local->bss_list, list)
- ieee80211_rx_bss_put(local, bss);
-}
-
struct ieee80211_bss *
ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
u8 *ssid, u8 ssid_len)
{
- struct ieee80211_bss *bss;
-
- spin_lock_bh(&local->bss_lock);
- bss = local->bss_hash[STA_HASH(bssid)];
- while (bss) {
- if (!bss_mesh_cfg(bss) &&
- !memcmp(bss->bssid, bssid, ETH_ALEN) &&
- bss->freq == freq &&
- bss->ssid_len == ssid_len &&
- (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) {
- atomic_inc(&bss->users);
- break;
- }
- bss = bss->hnext;
- }
- spin_unlock_bh(&local->bss_lock);
- return bss;
-}
-
-/* Caller must hold local->bss_lock */
-static void __ieee80211_rx_bss_hash_add(struct ieee80211_local *local,
- struct ieee80211_bss *bss)
-{
- u8 hash_idx;
-
- if (bss_mesh_cfg(bss))
- hash_idx = mesh_id_hash(bss_mesh_id(bss),
- bss_mesh_id_len(bss));
- else
- hash_idx = STA_HASH(bss->bssid);
-
- bss->hnext = local->bss_hash[hash_idx];
- local->bss_hash[hash_idx] = bss;
-}
-
-/* Caller must hold local->bss_lock */
-static void __ieee80211_rx_bss_hash_del(struct ieee80211_local *local,
- struct ieee80211_bss *bss)
-{
- struct ieee80211_bss *b, *prev = NULL;
- b = local->bss_hash[STA_HASH(bss->bssid)];
- while (b) {
- if (b == bss) {
- if (!prev)
- local->bss_hash[STA_HASH(bss->bssid)] =
- bss->hnext;
- else
- prev->hnext = bss->hnext;
- break;
- }
- prev = b;
- b = b->hnext;
- }
-}
-
-static struct ieee80211_bss *
-ieee80211_rx_bss_add(struct ieee80211_local *local, u8 *bssid, int freq,
- u8 *ssid, u8 ssid_len)
-{
- struct ieee80211_bss *bss;
-
- bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
- if (!bss)
- return NULL;
- atomic_set(&bss->users, 2);
- memcpy(bss->bssid, bssid, ETH_ALEN);
- bss->freq = freq;
- if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) {
- memcpy(bss->ssid, ssid, ssid_len);
- bss->ssid_len = ssid_len;
- }
-
- spin_lock_bh(&local->bss_lock);
- /* TODO: order by RSSI? */
- list_add_tail(&bss->list, &local->bss_list);
- __ieee80211_rx_bss_hash_add(local, bss);
- spin_unlock_bh(&local->bss_lock);
- return bss;
-}
-
-#ifdef CONFIG_MAC80211_MESH
-static struct ieee80211_bss *
-ieee80211_rx_mesh_bss_get(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len,
- u8 *mesh_cfg, int freq)
-{
- struct ieee80211_bss *bss;
-
- spin_lock_bh(&local->bss_lock);
- bss = local->bss_hash[mesh_id_hash(mesh_id, mesh_id_len)];
- while (bss) {
- if (bss_mesh_cfg(bss) &&
- !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) &&
- bss->freq == freq &&
- mesh_id_len == bss->mesh_id_len &&
- (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id,
- mesh_id_len))) {
- atomic_inc(&bss->users);
- break;
- }
- bss = bss->hnext;
- }
- spin_unlock_bh(&local->bss_lock);
- return bss;
+ return (void *)cfg80211_get_bss(local->hw.wiphy,
+ ieee80211_get_channel(local->hw.wiphy,
+ freq),
+ bssid, ssid, ssid_len,
+ 0, 0);
}
-static struct ieee80211_bss *
-ieee80211_rx_mesh_bss_add(struct ieee80211_local *local, u8 *mesh_id, int mesh_id_len,
- u8 *mesh_cfg, int mesh_config_len, int freq)
+static void ieee80211_rx_bss_free(struct cfg80211_bss *cbss)
{
- struct ieee80211_bss *bss;
-
- if (mesh_config_len != IEEE80211_MESH_CONFIG_LEN)
- return NULL;
-
- bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
- if (!bss)
- return NULL;
-
- bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC);
- if (!bss->mesh_cfg) {
- kfree(bss);
- return NULL;
- }
-
- if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) {
- bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC);
- if (!bss->mesh_id) {
- kfree(bss->mesh_cfg);
- kfree(bss);
- return NULL;
- }
- memcpy(bss->mesh_id, mesh_id, mesh_id_len);
- }
-
- atomic_set(&bss->users, 2);
- memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN);
- bss->mesh_id_len = mesh_id_len;
- bss->freq = freq;
- spin_lock_bh(&local->bss_lock);
- /* TODO: order by RSSI? */
- list_add_tail(&bss->list, &local->bss_list);
- __ieee80211_rx_bss_hash_add(local, bss);
- spin_unlock_bh(&local->bss_lock);
- return bss;
-}
-#endif
+ struct ieee80211_bss *bss = (void *)cbss;
-static void ieee80211_rx_bss_free(struct ieee80211_bss *bss)
-{
- kfree(bss->ies);
kfree(bss_mesh_id(bss));
kfree(bss_mesh_cfg(bss));
- kfree(bss);
}
void ieee80211_rx_bss_put(struct ieee80211_local *local,
struct ieee80211_bss *bss)
{
- local_bh_disable();
- if (!atomic_dec_and_lock(&bss->users, &local->bss_lock)) {
- local_bh_enable();
- return;
- }
-
- __ieee80211_rx_bss_hash_del(local, bss);
- list_del(&bss->list);
- spin_unlock_bh(&local->bss_lock);
- ieee80211_rx_bss_free(bss);
+ cfg80211_put_bss((struct cfg80211_bss *)bss);
}
struct ieee80211_bss *
bool beacon)
{
struct ieee80211_bss *bss;
- int clen, freq = channel->center_freq;
+ int clen;
enum cfg80211_signal_type sigtype = CFG80211_SIGNAL_TYPE_NONE;
s32 signal = 0;
signal = (rx_status->signal * 100) / local->hw.max_signal;
}
- cfg80211_put_bss(
- cfg80211_inform_bss_frame(local->hw.wiphy, channel,
- mgmt, len, signal, sigtype,
- GFP_ATOMIC));
+ bss = (void *)cfg80211_inform_bss_frame(local->hw.wiphy, channel,
+ mgmt, len, signal, sigtype,
+ GFP_ATOMIC);
-#ifdef CONFIG_MAC80211_MESH
- if (elems->mesh_config)
- bss = ieee80211_rx_mesh_bss_get(local, elems->mesh_id,
- elems->mesh_id_len, elems->mesh_config, freq);
- else
-#endif
- bss = ieee80211_rx_bss_get(local, mgmt->bssid, freq,
- elems->ssid, elems->ssid_len);
- if (!bss) {
-#ifdef CONFIG_MAC80211_MESH
- if (elems->mesh_config)
- bss = ieee80211_rx_mesh_bss_add(local, elems->mesh_id,
- elems->mesh_id_len, elems->mesh_config,
- elems->mesh_config_len, freq);
- else
-#endif
- bss = ieee80211_rx_bss_add(local, mgmt->bssid, freq,
- elems->ssid, elems->ssid_len);
- if (!bss)
- return NULL;
- } else {
-#if 0
- /* TODO: order by RSSI? */
- spin_lock_bh(&local->bss_lock);
- list_move_tail(&bss->list, &local->bss_list);
- spin_unlock_bh(&local->bss_lock);
-#endif
- }
+ if (!bss)
+ return NULL;
+
+ bss->cbss.free_priv = ieee80211_rx_bss_free;
/* save the ERP value so that it is available at association time */
if (elems->erp_info && elems->erp_info_len >= 1) {
bss->has_erp_value = 1;
}
- bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
- bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
-
if (elems->tim) {
struct ieee80211_tim_ie *tim_ie =
(struct ieee80211_tim_ie *)elems->tim;
bss->supp_rates_len += clen;
}
- bss->band = rx_status->band;
-
- bss->timestamp = le64_to_cpu(mgmt->u.beacon.timestamp);
- bss->last_update = jiffies;
- bss->signal = rx_status->signal;
- bss->noise = rx_status->noise;
- bss->qual = rx_status->qual;
bss->wmm_used = elems->wmm_param || elems->wmm_info;
if (!beacon)
bss->last_probe_resp = jiffies;
- /*
- * For probe responses, or if we don't have any information yet,
- * use the IEs from the beacon.
- */
- if (!bss->ies || !beacon) {
- if (bss->ies == NULL || bss->ies_len < elems->total_len) {
- kfree(bss->ies);
- bss->ies = kmalloc(elems->total_len, GFP_ATOMIC);
- }
- if (bss->ies) {
- memcpy(bss->ies, elems->ie_start, elems->total_len);
- bss->ies_len = elems->total_len;
- } else
- bss->ies_len = 0;
- }
-
return bss;
}
bss = ieee80211_rx_bss_get(local, bssid, freq, ssid, ssid_len);
if (bss) {
- atomic_dec(&bss->users);
+ cfg80211_unlink_bss(local->hw.wiphy, (void *)bss);
ieee80211_rx_bss_put(local, bss);
}
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff