void ieee80211_chswitch_work(struct work_struct *work)
{
struct ieee80211_sub_if_data *sdata =
container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
struct ieee80211_bss *bss;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
if (!netif_running(sdata->dev))
return;
bss = ieee80211_rx_bss_get(sdata->local, ifmgd->bssid,
sdata->local->hw.conf.channel->center_freq,
ifmgd->ssid, ifmgd->ssid_len);
if (!bss)
goto exit;
sdata->local->oper_channel = sdata->local->csa_channel;
/* XXX: shouldn't really modify cfg80211-owned data! */
if (!ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL))
bss->cbss.channel = sdata->local->oper_channel;
ieee80211_rx_bss_put(sdata->local, bss);
exit:
ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
ieee80211_wake_queues_by_reason(&sdata->local->hw,
IEEE80211_QUEUE_STOP_REASON_CSA);
}
void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid,
int freq, u8 *ssid, u8 ssid_len)
{
struct ieee80211_bss *bss;
struct ieee80211_local *local = sdata->local;
bss = ieee80211_rx_bss_get(local, bssid, freq, ssid, ssid_len);
if (bss) {
cfg80211_unlink_bss(local->hw.wiphy, (void *)bss);
ieee80211_rx_bss_put(local, bss);
}
}
struct ieee80211_bss *
ieee80211_bss_info_update(struct ieee80211_local *local,
struct ieee80211_rx_status *rx_status,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee802_11_elems *elems,
int freq, bool beacon)
{
struct ieee80211_bss *bss;
int clen;
#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
}
/* save the ERP value so that it is available at association time */
if (elems->erp_info && elems->erp_info_len >= 1) {
bss->erp_value = elems->erp_info[0];
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->dtim_period = tim_ie->dtim_period;
}
/* set default value for buggy APs */
if (!elems->tim || bss->dtim_period == 0)
bss->dtim_period = 1;
bss->supp_rates_len = 0;
if (elems->supp_rates) {
clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
if (clen > elems->supp_rates_len)
clen = elems->supp_rates_len;
memcpy(&bss->supp_rates[bss->supp_rates_len], elems->supp_rates,
clen);
bss->supp_rates_len += clen;
}
if (elems->ext_supp_rates) {
clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
if (clen > elems->ext_supp_rates_len)
clen = elems->ext_supp_rates_len;
memcpy(&bss->supp_rates[bss->supp_rates_len],
elems->ext_supp_rates, clen);
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;
}