From 471b3efdfccc257591331724145f8ccf8b3217e1 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 28 Dec 2007 14:32:58 +0100 Subject: mac80211: add unified BSS configuration This patch (based on Ron Rindjunsky's) creates a framework for a unified way to pass BSS configuration to drivers that require the information, e.g. for implementing power save mode. This patch introduces new ieee80211_bss_conf structure that is passed to the driver via the new bss_info_changed() callback when the BSS configuration changes. This new BSS configuration infrastructure adds the following new features: * drivers are notified of their association AID * drivers are notified of association status and replaces the erp_ie_changed() callback. The patch also does the relevant driver updates for the latter change. Signed-off-by: Ron Rindjunsky Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/debugfs_netdev.c | 2 +- net/mac80211/ieee80211.c | 29 ++++++++++-------- net/mac80211/ieee80211_i.h | 19 +++++++----- net/mac80211/ieee80211_sta.c | 69 ++++++++++++++++++++++--------------------- net/mac80211/tx.c | 13 ++++---- net/mac80211/util.c | 12 ++++---- 6 files changed, 77 insertions(+), 67 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 3500fe0d380..829872a3ae8 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -118,7 +118,7 @@ static ssize_t ieee80211_if_fmt_flags( sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "", sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "", sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "", - sdata->flags & IEEE80211_SDATA_USE_PROTECTION ? "CTS prot\n" : ""); + sdata->bss_conf.use_cts_prot ? "CTS prot\n" : ""); } __IEEE80211_IF_FILE(flags); diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c index 859682eee54..17704021823 100644 --- a/net/mac80211/ieee80211.c +++ b/net/mac80211/ieee80211.c @@ -635,25 +635,30 @@ int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht, return 0; } -void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes) +void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, + u32 changed) { - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - if (local->ops->erp_ie_changed) - local->ops->erp_ie_changed(local_to_hw(local), changes, - !!(sdata->flags & IEEE80211_SDATA_USE_PROTECTION), - !(sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE)); + struct ieee80211_local *local = sdata->local; + + if (!changed) + return; + + if (local->ops->bss_info_changed) + local->ops->bss_info_changed(local_to_hw(local), + &sdata->vif, + &sdata->bss_conf, + changed); } void ieee80211_reset_erp_info(struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - sdata->flags &= ~(IEEE80211_SDATA_USE_PROTECTION | - IEEE80211_SDATA_SHORT_PREAMBLE); - ieee80211_erp_info_change_notify(dev, - IEEE80211_ERP_CHANGE_PROTECTION | - IEEE80211_ERP_CHANGE_PREAMBLE); + sdata->bss_conf.use_cts_prot = 0; + sdata->bss_conf.use_short_preamble = 0; + ieee80211_bss_info_change_notify(sdata, + BSS_CHANGED_ERP_CTS_PROT | + BSS_CHANGED_ERP_PREAMBLE); } void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 08a6c0cff69..72ecbf7bf96 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -291,12 +291,7 @@ struct ieee80211_if_sta { /* flags used in struct ieee80211_sub_if_data.flags */ #define IEEE80211_SDATA_ALLMULTI BIT(0) #define IEEE80211_SDATA_PROMISC BIT(1) -#define IEEE80211_SDATA_USE_PROTECTION BIT(2) /* CTS protect ERP frames */ -/* use short preamble with IEEE 802.11b: this flag is set when the AP or beacon - * generator reports that there are no present stations that cannot support short - * preambles */ -#define IEEE80211_SDATA_SHORT_PREAMBLE BIT(3) -#define IEEE80211_SDATA_USERSPACE_MLME BIT(4) +#define IEEE80211_SDATA_USERSPACE_MLME BIT(2) struct ieee80211_sub_if_data { struct list_head list; @@ -327,6 +322,15 @@ struct ieee80211_sub_if_data { struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; struct ieee80211_key *default_key; + /* + * BSS configuration for this interface. + * + * FIXME: I feel bad putting this here when we already have a + * bss pointer, but the bss pointer is just wrong when + * you have multiple virtual STA mode interfaces... + * This needs to be fixed. + */ + struct ieee80211_bss_conf bss_conf; struct ieee80211_if_ap *bss; /* BSS that this device belongs to */ union { @@ -770,7 +774,8 @@ struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, u8 *addr); int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); -void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes); +void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, + u32 changed); void ieee80211_reset_erp_info(struct net_device *dev); int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, struct ieee80211_ht_info *ht_info); diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c index b1e7d17ee25..866eb807812 100644 --- a/net/mac80211/ieee80211_sta.c +++ b/net/mac80211/ieee80211_sta.c @@ -313,48 +313,42 @@ static void ieee80211_sta_wmm_params(struct net_device *dev, } -static void ieee80211_handle_erp_ie(struct net_device *dev, u8 erp_value) +static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, + u8 erp_value) { - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; struct ieee80211_if_sta *ifsta = &sdata->u.sta; - int use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; - int preamble_mode = (erp_value & WLAN_ERP_BARKER_PREAMBLE) != 0; - u8 changes = 0; + bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; + bool preamble_mode = (erp_value & WLAN_ERP_BARKER_PREAMBLE) != 0; DECLARE_MAC_BUF(mac); + u32 changed = 0; - if (use_protection != !!(sdata->flags & IEEE80211_SDATA_USE_PROTECTION)) { + if (use_protection != bss_conf->use_cts_prot) { if (net_ratelimit()) { printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" "%s)\n", - dev->name, + sdata->dev->name, use_protection ? "enabled" : "disabled", print_mac(mac, ifsta->bssid)); } - if (use_protection) - sdata->flags |= IEEE80211_SDATA_USE_PROTECTION; - else - sdata->flags &= ~IEEE80211_SDATA_USE_PROTECTION; - changes |= IEEE80211_ERP_CHANGE_PROTECTION; + bss_conf->use_cts_prot = use_protection; + changed |= BSS_CHANGED_ERP_CTS_PROT; } - if (preamble_mode != !(sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE)) { + if (preamble_mode != bss_conf->use_short_preamble) { if (net_ratelimit()) { printk(KERN_DEBUG "%s: switched to %s barker preamble" " (BSSID=%s)\n", - dev->name, + sdata->dev->name, (preamble_mode == WLAN_ERP_PREAMBLE_SHORT) ? "short" : "long", print_mac(mac, ifsta->bssid)); } - if (preamble_mode) - sdata->flags &= ~IEEE80211_SDATA_SHORT_PREAMBLE; - else - sdata->flags |= IEEE80211_SDATA_SHORT_PREAMBLE; - changes |= IEEE80211_ERP_CHANGE_PREAMBLE; + bss_conf->use_short_preamble = preamble_mode; + changed |= BSS_CHANGED_ERP_PREAMBLE; } - if (changes) - ieee80211_erp_info_change_notify(dev, changes); + return changed; } int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, @@ -458,19 +452,16 @@ static void ieee80211_set_associated(struct net_device *dev, struct ieee80211_if_sta *ifsta, bool assoc) { - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; union iwreq_data wrqu; - - if (!!(ifsta->flags & IEEE80211_STA_ASSOCIATED) == assoc) - return; + u32 changed = BSS_CHANGED_ASSOC; if (assoc) { - struct ieee80211_sub_if_data *sdata; struct ieee80211_sta_bss *bss; ifsta->flags |= IEEE80211_STA_ASSOCIATED; - sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (sdata->vif.type != IEEE80211_IF_TYPE_STA) return; @@ -479,7 +470,8 @@ static void ieee80211_set_associated(struct net_device *dev, ifsta->ssid, ifsta->ssid_len); if (bss) { if (bss->has_erp_value) - ieee80211_handle_erp_ie(dev, bss->erp_value); + changed |= ieee80211_handle_erp_ie( + sdata, bss->erp_value); ieee80211_rx_bss_put(dev, bss); } @@ -499,6 +491,8 @@ static void ieee80211_set_associated(struct net_device *dev, wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); ifsta->last_probe = jiffies; ieee80211_led_assoc(local, assoc); + + ieee80211_bss_info_change_notify(sdata, changed); } static void ieee80211_set_disassoc(struct net_device *dev, @@ -1536,18 +1530,20 @@ static void ieee80211_rx_mgmt_disassoc(struct net_device *dev, } -static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev, +static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, struct ieee80211_if_sta *ifsta, struct ieee80211_mgmt *mgmt, size_t len, int reassoc) { - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_local *local = sdata->local; + struct net_device *dev = sdata->dev; struct ieee80211_hw_mode *mode; struct sta_info *sta; u32 rates; u16 capab_info, status_code, aid; struct ieee802_11_elems elems; + struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; u8 *pos; int i, j; DECLARE_MAC_BUF(mac); @@ -1620,6 +1616,8 @@ static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev, if (ifsta->assocresp_ies) memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); + /* set AID, ieee80211_set_associated() will tell the driver */ + bss_conf->aid = aid; ieee80211_set_associated(dev, ifsta, 1); /* Add STA entry for the AP */ @@ -2099,6 +2097,7 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev, struct ieee802_11_elems elems; struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee80211_conf *conf = &local->hw.conf; + u32 changed = 0; ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1); @@ -2119,7 +2118,7 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev, ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); if (elems.erp_info && elems.erp_info_len >= 1) - ieee80211_handle_erp_ie(dev, elems.erp_info[0]); + changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && local->ops->conf_ht && @@ -2142,6 +2141,8 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev, ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, elems.wmm_param_len); } + + ieee80211_bss_info_change_notify(sdata, changed); } @@ -2329,10 +2330,10 @@ static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev, ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len); break; case IEEE80211_STYPE_ASSOC_RESP: - ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, 0); + ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); break; case IEEE80211_STYPE_REASSOC_RESP: - ieee80211_rx_mgmt_assoc_resp(dev, ifsta, mgmt, skb->len, 1); + ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); break; case IEEE80211_STYPE_DEAUTH: ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len); @@ -2787,7 +2788,7 @@ static int ieee80211_sta_join_ibss(struct net_device *dev, break; } control.tx_rate = - ((sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE) && + (sdata->bss_conf.use_short_preamble && (ratesel.rate->flags & IEEE80211_RATE_PREAMBLE2)) ? ratesel.rate->val2 : ratesel.rate->val; control.antenna_sel_tx = local->hw.conf.antenna_sel_tx; diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 51c0f00d02d..f9088fe34d5 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -176,7 +176,7 @@ static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr, * to closest integer */ dur = ieee80211_frame_duration(local, 10, rate, erp, - tx->sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE); + tx->sdata->bss_conf.use_short_preamble); if (next_frag_len) { /* Frame is fragmented: duration increases with time needed to @@ -185,8 +185,7 @@ static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr, /* next fragment */ dur += ieee80211_frame_duration(local, next_frag_len, txrate->rate, erp, - tx->sdata->flags & - IEEE80211_SDATA_SHORT_PREAMBLE); + tx->sdata->bss_conf.use_short_preamble); } return dur; @@ -605,7 +604,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx) tx->u.tx.control->alt_retry_rate = -1; if (tx->u.tx.mode->mode == MODE_IEEE80211G && - (tx->sdata->flags & IEEE80211_SDATA_USE_PROTECTION) && + tx->sdata->bss_conf.use_cts_prot && (tx->flags & IEEE80211_TXRXD_FRAGMENTED) && rsel.nonerp) { tx->u.tx.last_frag_rate = tx->u.tx.rate; if (rsel.probe) @@ -667,7 +666,7 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx) if (mode->mode == MODE_IEEE80211G && (tx->u.tx.rate->flags & IEEE80211_RATE_ERP) && (tx->flags & IEEE80211_TXRXD_TXUNICAST) && - (tx->sdata->flags & IEEE80211_SDATA_USE_PROTECTION) && + tx->sdata->bss_conf.use_cts_prot && !(control->flags & IEEE80211_TXCTL_USE_RTS_CTS)) control->flags |= IEEE80211_TXCTL_USE_CTS_PROTECT; @@ -676,7 +675,7 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx) * available on the network at the current point in time. */ if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && (tx->u.tx.rate->flags & IEEE80211_RATE_PREAMBLE2) && - (tx->sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE) && + tx->sdata->bss_conf.use_short_preamble && (!tx->sta || (tx->sta->flags & WLAN_STA_SHORT_PREAMBLE))) { tx->u.tx.control->tx_rate = tx->u.tx.rate->val2; } @@ -1754,7 +1753,7 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, } control->tx_rate = - ((sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE) && + (sdata->bss_conf.use_short_preamble && (rsel.rate->flags & IEEE80211_RATE_PREAMBLE2)) ? rsel.rate->val2 : rsel.rate->val; control->antenna_sel_tx = local->hw.conf.antenna_sel_tx; diff --git a/net/mac80211/util.c b/net/mac80211/util.c index ba81cf54281..5e631ce98d7 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -312,8 +312,8 @@ __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, int erp; erp = ieee80211_is_erp_rate(hw->conf.phymode, rate); - dur = ieee80211_frame_duration(local, frame_len, rate, - erp, sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE); + dur = ieee80211_frame_duration(local, frame_len, rate, erp, + sdata->bss_conf.use_short_preamble); return cpu_to_le16(dur); } @@ -326,11 +326,11 @@ __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_rate *rate; struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); - int short_preamble; + bool short_preamble; int erp; u16 dur; - short_preamble = sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE; + short_preamble = sdata->bss_conf.use_short_preamble; rate = frame_txctl->rts_rate; erp = !!(rate->flags & IEEE80211_RATE_ERP); @@ -357,11 +357,11 @@ __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_rate *rate; struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); - int short_preamble; + bool short_preamble; int erp; u16 dur; - short_preamble = sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE; + short_preamble = sdata->bss_conf.use_short_preamble; rate = frame_txctl->rts_rate; erp = !!(rate->flags & IEEE80211_RATE_ERP); -- cgit v1.2.3