From 0c1ad2cac1cb54db38fd4cc1822965071ee83f6e Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 23 Dec 2009 13:15:39 +0100 Subject: mac80211: proper bss private data handling cfg80211 offers private data for each BSS struct, which mac80211 uses. However, mac80211 uses internal and external (cfg80211) BSS pointers interchangeably and has a hack to put the cfg80211 bss struct into the private struct. Remove this hack, properly converting between the pointers wherever necessary. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/mlme.c | 64 +++++++++++++++++++++++++++-------------------------- 1 file changed, 33 insertions(+), 31 deletions(-) (limited to 'net/mac80211/mlme.c') diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index ea434b5a779..e44f1ed0b0d 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -330,7 +330,7 @@ static void ieee80211_chswitch_work(struct work_struct *work) ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL); /* XXX: shouldn't really modify cfg80211-owned data! */ - ifmgd->associated->cbss.channel = sdata->local->oper_channel; + ifmgd->associated->channel = sdata->local->oper_channel; ieee80211_wake_queues_by_reason(&sdata->local->hw, IEEE80211_QUEUE_STOP_REASON_CSA); @@ -357,6 +357,8 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, struct ieee80211_channel_sw_ie *sw_elem, struct ieee80211_bss *bss) { + struct cfg80211_bss *cbss = + container_of((void *)bss, struct cfg80211_bss, priv); struct ieee80211_channel *new_ch; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num); @@ -390,7 +392,7 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, mod_timer(&ifmgd->chswitch_timer, jiffies + msecs_to_jiffies(sw_elem->count * - bss->cbss.beacon_interval)); + cbss->beacon_interval)); } } @@ -670,23 +672,24 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, } static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, - struct ieee80211_bss *bss, + struct cfg80211_bss *cbss, u32 bss_info_changed) { + struct ieee80211_bss *bss = (void *)cbss->priv; struct ieee80211_local *local = sdata->local; bss_info_changed |= BSS_CHANGED_ASSOC; /* set timing information */ - sdata->vif.bss_conf.beacon_int = bss->cbss.beacon_interval; - sdata->vif.bss_conf.timestamp = bss->cbss.tsf; + sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; + sdata->vif.bss_conf.timestamp = cbss->tsf; sdata->vif.bss_conf.dtim_period = bss->dtim_period; bss_info_changed |= BSS_CHANGED_BEACON_INT; bss_info_changed |= ieee80211_handle_bss_capability(sdata, - bss->cbss.capability, bss->has_erp_value, bss->erp_value); + cbss->capability, bss->has_erp_value, bss->erp_value); - sdata->u.mgd.associated = bss; - memcpy(sdata->u.mgd.bssid, bss->cbss.bssid, ETH_ALEN); + sdata->u.mgd.associated = cbss; + memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); /* just to be sure */ sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL | @@ -737,7 +740,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata) if (WARN_ON(!ifmgd->associated)) return; - memcpy(bssid, ifmgd->associated->cbss.bssid, ETH_ALEN); + memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); ifmgd->associated = NULL; memset(ifmgd->bssid, 0, ETH_ALEN); @@ -833,8 +836,8 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; const u8 *ssid; - ssid = ieee80211_bss_get_ie(&ifmgd->associated->cbss, WLAN_EID_SSID); - ieee80211_send_probe_req(sdata, ifmgd->associated->cbss.bssid, + ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); + ieee80211_send_probe_req(sdata, ifmgd->associated->bssid, ssid + 2, ssid[1], NULL, 0); ifmgd->probe_send_count++; @@ -928,7 +931,7 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, ASSERT_MGD_MTX(ifmgd); - bssid = ifmgd->associated->cbss.bssid; + bssid = ifmgd->associated->bssid; reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); @@ -957,7 +960,7 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, if (WARN_ON(!ifmgd->associated)) return RX_MGMT_NONE; - if (WARN_ON(memcmp(ifmgd->associated->cbss.bssid, mgmt->sa, ETH_ALEN))) + if (WARN_ON(memcmp(ifmgd->associated->bssid, mgmt->sa, ETH_ALEN))) return RX_MGMT_NONE; reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); @@ -979,7 +982,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, struct ieee80211_local *local = sdata->local; struct ieee80211_supported_band *sband; struct sta_info *sta; - struct ieee80211_bss *bss = wk->assoc.bss; + struct cfg80211_bss *cbss = wk->assoc.bss; u8 *pos; u32 rates, basic_rates; u16 capab_info, aid; @@ -1011,7 +1014,7 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, ifmgd->aid = aid; - sta = sta_info_alloc(sdata, bss->cbss.bssid, GFP_KERNEL); + sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); if (!sta) { printk(KERN_DEBUG "%s: failed to alloc STA entry for" " the AP\n", sdata->name); @@ -1103,14 +1106,13 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk, (sdata->local->hw.queues >= 4) && !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, - bss->cbss.bssid, - ap_ht_cap_flags); + cbss->bssid, ap_ht_cap_flags); /* set AID and assoc capability, * ieee80211_set_associated() will tell the driver */ bss_conf->aid = aid; bss_conf->assoc_capability = capab_info; - ieee80211_set_associated(sdata, bss, changed); + ieee80211_set_associated(sdata, cbss, changed); /* * Start timer to probe the connection to the AP now. @@ -1154,7 +1156,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, return; if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) && - (memcmp(mgmt->bssid, sdata->u.mgd.associated->cbss.bssid, + (memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid, ETH_ALEN) == 0)) { struct ieee80211_channel_sw_ie *sw_elem = (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; @@ -1189,7 +1191,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); if (ifmgd->associated && - memcmp(mgmt->bssid, ifmgd->associated->cbss.bssid, ETH_ALEN) == 0 && + memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0 && ifmgd->flags & (IEEE80211_STA_BEACON_POLL | IEEE80211_STA_CONNECTION_POLL)) { ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL | @@ -1262,7 +1264,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, if (!ifmgd->associated) return; - bssid = ifmgd->associated->cbss.bssid; + bssid = ifmgd->associated->bssid; /* * And in theory even frames from a different AP we were just @@ -1428,8 +1430,7 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, mutex_lock(&ifmgd->mtx); if (ifmgd->associated && - memcmp(ifmgd->associated->cbss.bssid, mgmt->bssid, - ETH_ALEN) == 0) { + memcmp(ifmgd->associated->bssid, mgmt->bssid, ETH_ALEN) == 0) { switch (fc & IEEE80211_FCTL_STYPE) { case IEEE80211_STYPE_BEACON: ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, @@ -1448,7 +1449,7 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, /* XXX: differentiate, can only happen for CSA now! */ ieee80211_sta_process_chanswitch(sdata, &mgmt->u.action.u.chan_switch.sw_elem, - ifmgd->associated); + (void *)ifmgd->associated->priv); break; } mutex_unlock(&ifmgd->mtx); @@ -1533,7 +1534,7 @@ static void ieee80211_sta_work(struct work_struct *work) ifmgd->associated) { u8 bssid[ETH_ALEN]; - memcpy(bssid, ifmgd->associated->cbss.bssid, ETH_ALEN); + memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); if (time_is_after_jiffies(ifmgd->probe_timeout)) run_again(ifmgd, ifmgd->probe_timeout); @@ -1840,6 +1841,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, struct cfg80211_assoc_request *req) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + struct ieee80211_bss *bss = (void *)req->bss->priv; struct ieee80211_work *wk; const u8 *ssid; int i; @@ -1870,7 +1872,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, } else wk->ie_len = 0; - wk->assoc.bss = (void *)req->bss; + wk->assoc.bss = req->bss; memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN); @@ -1893,9 +1895,9 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, */ wk->assoc.use_11n = !(ifmgd->flags & IEEE80211_STA_DISABLE_11N); wk->assoc.capability = req->bss->capability; - wk->assoc.wmm_used = wk->assoc.bss->wmm_used; - wk->assoc.supp_rates = wk->assoc.bss->supp_rates; - wk->assoc.supp_rates_len = wk->assoc.bss->supp_rates_len; + wk->assoc.wmm_used = bss->wmm_used; + wk->assoc.supp_rates = bss->supp_rates; + wk->assoc.supp_rates_len = bss->supp_rates_len; wk->assoc.ht_information_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_INFORMATION); @@ -1942,7 +1944,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, mutex_lock(&ifmgd->mtx); - if (ifmgd->associated && &ifmgd->associated->cbss == req->bss) { + if (ifmgd->associated == req->bss) { bssid = req->bss->bssid; ieee80211_set_disassoc(sdata); mutex_unlock(&ifmgd->mtx); @@ -2004,7 +2006,7 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, * to cfg80211 while that's in a locked section already * trying to tell us that the user wants to disconnect. */ - if (&ifmgd->associated->cbss != req->bss) { + if (ifmgd->associated != req->bss) { mutex_unlock(&ifmgd->mtx); return -ENOLINK; } -- cgit v1.2.3