From 471b3efdfccc257591331724145f8ccf8b3217e1 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 28 Dec 2007 14:32:58 +0100 Subject: [PATCH] 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 --- drivers/net/wireless/iwlwifi/iwl-3945.c | 6 +-- drivers/net/wireless/iwlwifi/iwl-4965.c | 6 +-- drivers/net/wireless/iwlwifi/iwl4965-base.c | 24 +++++++--- drivers/net/wireless/rt2x00/rt2400pci.c | 2 +- drivers/net/wireless/rt2x00/rt2500pci.c | 2 +- drivers/net/wireless/rt2x00/rt2500usb.c | 2 +- drivers/net/wireless/rt2x00/rt2x00.h | 6 ++- drivers/net/wireless/rt2x00/rt2x00dev.c | 13 ++++-- drivers/net/wireless/rt2x00/rt2x00mac.c | 16 ++++--- drivers/net/wireless/rt2x00/rt61pci.c | 2 +- drivers/net/wireless/rt2x00/rt73usb.c | 2 +- drivers/net/wireless/zd1211rw/zd_mac.c | 12 ++--- include/net/mac80211.h | 66 ++++++++++++++++++++------- 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 ++--- 19 files changed, 183 insertions(+), 120 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c index a793cd11..77e7202c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945.c +++ b/drivers/net/wireless/iwlwifi/iwl-3945.c @@ -520,10 +520,8 @@ static void iwl3945_rx_reply_rx(struct iwl3945_priv *priv, break; /* - * TODO: There is no callback function from upper - * stack to inform us when associated status. this - * work around to sniff assoc_resp management frame - * and finish the association process. + * TODO: Use the new callback function from + * mac80211 instead of sniffing these packets. */ case IEEE80211_STYPE_ASSOC_RESP: case IEEE80211_STYPE_REASSOC_RESP:{ diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c index 89e2c44..ed3f119 100644 --- a/drivers/net/wireless/iwlwifi/iwl-4965.c +++ b/drivers/net/wireless/iwlwifi/iwl-4965.c @@ -4095,10 +4095,8 @@ static void iwl4965_rx_reply_rx(struct iwl4965_priv *priv, break; /* - * TODO: There is no callback function from upper - * stack to inform us when associated status. this - * work around to sniff assoc_resp management frame - * and finish the association process. + * TODO: Use the new callback function from + * mac80211 instead of sniffing these packets. */ case IEEE80211_STYPE_ASSOC_RESP: case IEEE80211_STYPE_REASSOC_RESP: diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c index 92bb7e1..2597c08 100644 --- a/drivers/net/wireless/iwlwifi/iwl4965-base.c +++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c @@ -7764,25 +7764,35 @@ static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw, IWL_DEBUG_MAC80211("leave\n"); } -static void iwl4965_mac_erp_ie_changed(struct ieee80211_hw *hw, - u8 changes, int cts_protection, int preamble) + +static void iwl4965_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u32 changes) { struct iwl4965_priv *priv = hw->priv; - if (changes & IEEE80211_ERP_CHANGE_PREAMBLE) { - if (preamble == WLAN_ERP_PREAMBLE_SHORT) + if (changes & BSS_CHANGED_ERP_PREAMBLE) { + if (bss_conf->use_short_preamble) priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; else priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; } - if (changes & IEEE80211_ERP_CHANGE_PROTECTION) { - if (cts_protection && (priv->phymode != MODE_IEEE80211A)) + if (changes & BSS_CHANGED_ERP_CTS_PROT) { + if (bss_conf->use_cts_prot && (priv->phymode != MODE_IEEE80211A)) priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK; else priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK; } + if (changes & BSS_CHANGED_ASSOC) { + /* + * TODO: + * do stuff instead of sniffing assoc resp + */ + } + if (iwl4965_is_associated(priv)) iwl4965_send_rxon_assoc(priv); } @@ -8952,7 +8962,7 @@ static struct ieee80211_ops iwl4965_hw_ops = { .get_tsf = iwl4965_mac_get_tsf, .reset_tsf = iwl4965_mac_reset_tsf, .beacon_update = iwl4965_mac_beacon_update, - .erp_ie_changed = iwl4965_mac_erp_ie_changed, + .bss_info_changed = iwl4965_bss_info_changed, #ifdef CONFIG_IWL4965_HT .conf_ht = iwl4965_mac_conf_ht, .ampdu_action = iwl4965_mac_ampdu_action, diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c index f4d0c779..d6cba13 100644 --- a/drivers/net/wireless/rt2x00/rt2400pci.c +++ b/drivers/net/wireless/rt2x00/rt2400pci.c @@ -1524,7 +1524,7 @@ static const struct ieee80211_ops rt2400pci_mac80211_ops = { .configure_filter = rt2400pci_configure_filter, .get_stats = rt2x00mac_get_stats, .set_retry_limit = rt2400pci_set_retry_limit, - .erp_ie_changed = rt2x00mac_erp_ie_changed, + .bss_info_changed = rt2x00mac_bss_info_changed, .conf_tx = rt2400pci_conf_tx, .get_tx_stats = rt2x00mac_get_tx_stats, .get_tsf = rt2400pci_get_tsf, diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c index 206b50f..e874fdc 100644 --- a/drivers/net/wireless/rt2x00/rt2500pci.c +++ b/drivers/net/wireless/rt2x00/rt2500pci.c @@ -1835,7 +1835,7 @@ static const struct ieee80211_ops rt2500pci_mac80211_ops = { .configure_filter = rt2500pci_configure_filter, .get_stats = rt2x00mac_get_stats, .set_retry_limit = rt2500pci_set_retry_limit, - .erp_ie_changed = rt2x00mac_erp_ie_changed, + .bss_info_changed = rt2x00mac_bss_info_changed, .conf_tx = rt2x00mac_conf_tx, .get_tx_stats = rt2x00mac_get_tx_stats, .get_tsf = rt2500pci_get_tsf, diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c index 6579718..1933113 100644 --- a/drivers/net/wireless/rt2x00/rt2500usb.c +++ b/drivers/net/wireless/rt2x00/rt2500usb.c @@ -1776,7 +1776,7 @@ static const struct ieee80211_ops rt2500usb_mac80211_ops = { .config_interface = rt2x00mac_config_interface, .configure_filter = rt2500usb_configure_filter, .get_stats = rt2x00mac_get_stats, - .erp_ie_changed = rt2x00mac_erp_ie_changed, + .bss_info_changed = rt2x00mac_bss_info_changed, .conf_tx = rt2x00mac_conf_tx, .get_tx_stats = rt2x00mac_get_tx_stats, .beacon_update = rt2500usb_beacon_update, diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h index 94a8a7c..05927b9 100644 --- a/drivers/net/wireless/rt2x00/rt2x00.h +++ b/drivers/net/wireless/rt2x00/rt2x00.h @@ -936,8 +936,10 @@ int rt2x00mac_get_stats(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats); int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, struct ieee80211_tx_queue_stats *stats); -void rt2x00mac_erp_ie_changed(struct ieee80211_hw *hw, u8 changes, - int cts_protection, int preamble); +void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u32 changes); int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue, const struct ieee80211_tx_queue_params *params); diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c index b26c634..72cfe6f 100644 --- a/drivers/net/wireless/rt2x00/rt2x00dev.c +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c @@ -481,10 +481,17 @@ static void rt2x00lib_configuration_scheduled(struct work_struct *work) { struct rt2x00_dev *rt2x00dev = container_of(work, struct rt2x00_dev, config_work); - int preamble = !test_bit(CONFIG_SHORT_PREAMBLE, &rt2x00dev->flags); + struct ieee80211_bss_conf bss_conf; - rt2x00mac_erp_ie_changed(rt2x00dev->hw, - IEEE80211_ERP_CHANGE_PREAMBLE, 0, preamble); + bss_conf.use_short_preamble = + test_bit(CONFIG_SHORT_PREAMBLE, &rt2x00dev->flags); + + /* + * FIXME: shouldn't invoke it this way because all other contents + * of bss_conf is invalid. + */ + rt2x00mac_bss_info_changed(rt2x00dev->hw, rt2x00dev->interface.id, + &bss_conf, BSS_CHANGED_ERP_PREAMBLE); } /* diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c index 1d67bcd..e3f15e5 100644 --- a/drivers/net/wireless/rt2x00/rt2x00mac.c +++ b/drivers/net/wireless/rt2x00/rt2x00mac.c @@ -342,23 +342,27 @@ int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, } EXPORT_SYMBOL_GPL(rt2x00mac_get_tx_stats); -void rt2x00mac_erp_ie_changed(struct ieee80211_hw *hw, u8 changes, - int cts_protection, int preamble) +void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u32 changes) { struct rt2x00_dev *rt2x00dev = hw->priv; int short_preamble; int ack_timeout; int ack_consume_time; int difs; + int preamble; /* * We only support changing preamble mode. */ - if (!(changes & IEEE80211_ERP_CHANGE_PREAMBLE)) + if (!(changes & BSS_CHANGED_ERP_PREAMBLE)) return; - short_preamble = !preamble; - preamble = !!(preamble) ? PREAMBLE : SHORT_PREAMBLE; + short_preamble = bss_conf->use_short_preamble; + preamble = bss_conf->use_short_preamble ? + SHORT_PREAMBLE : PREAMBLE; difs = (hw->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME) ? SHORT_DIFS : DIFS; @@ -374,7 +378,7 @@ void rt2x00mac_erp_ie_changed(struct ieee80211_hw *hw, u8 changes, rt2x00dev->ops->lib->config_preamble(rt2x00dev, short_preamble, ack_timeout, ack_consume_time); } -EXPORT_SYMBOL_GPL(rt2x00mac_erp_ie_changed); +EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed); int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue, const struct ieee80211_tx_queue_params *params) diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index 88d1698..ab52f22 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -2441,7 +2441,7 @@ static const struct ieee80211_ops rt61pci_mac80211_ops = { .configure_filter = rt61pci_configure_filter, .get_stats = rt2x00mac_get_stats, .set_retry_limit = rt61pci_set_retry_limit, - .erp_ie_changed = rt2x00mac_erp_ie_changed, + .bss_info_changed = rt2x00mac_bss_info_changed, .conf_tx = rt2x00mac_conf_tx, .get_tx_stats = rt2x00mac_get_tx_stats, .get_tsf = rt61pci_get_tsf, diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c index 47ed307..f951876 100644 --- a/drivers/net/wireless/rt2x00/rt73usb.c +++ b/drivers/net/wireless/rt2x00/rt73usb.c @@ -2024,7 +2024,7 @@ static const struct ieee80211_ops rt73usb_mac80211_ops = { .configure_filter = rt73usb_configure_filter, .get_stats = rt2x00mac_get_stats, .set_retry_limit = rt73usb_set_retry_limit, - .erp_ie_changed = rt2x00mac_erp_ie_changed, + .bss_info_changed = rt2x00mac_bss_info_changed, .conf_tx = rt2x00mac_conf_tx, .get_tx_stats = rt2x00mac_get_tx_stats, .get_tsf = rt73usb_get_tsf, diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c index 3409cf9..49127e4 100644 --- a/drivers/net/wireless/zd1211rw/zd_mac.c +++ b/drivers/net/wireless/zd1211rw/zd_mac.c @@ -849,17 +849,19 @@ static void set_rts_cts_work(struct work_struct *work) mutex_unlock(&mac->chip.mutex); } -static void zd_op_erp_ie_changed(struct ieee80211_hw *hw, u8 changes, - int cts_protection, int preamble) +static void zd_op_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u32 changes) { struct zd_mac *mac = zd_hw_mac(hw); unsigned long flags; dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes); - if (changes & IEEE80211_ERP_CHANGE_PREAMBLE) { + if (changes & BSS_CHANGED_ERP_PREAMBLE) { spin_lock_irqsave(&mac->lock, flags); - mac->short_preamble = !preamble; + mac->short_preamble = bss_conf->use_short_preamble; if (!mac->updating_rts_rate) { mac->updating_rts_rate = 1; /* FIXME: should disable TX here, until work has @@ -879,7 +881,7 @@ static const struct ieee80211_ops zd_ops = { .config = zd_op_config, .config_interface = zd_op_config_interface, .configure_filter = zd_op_configure_filter, - .erp_ie_changed = zd_op_erp_ie_changed, + .bss_info_changed = zd_op_bss_info_changed, }; struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 8a49c06..9083baf 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -275,6 +275,43 @@ struct ieee80211_low_level_stats { unsigned int dot11RTSSuccessCount; }; +/** + * enum ieee80211_bss_change - BSS change notification flags + * + * These flags are used with the bss_info_changed() callback + * to indicate which BSS parameter changed. + * + * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), + * also implies a change in the AID. + * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed + * @BSS_CHANGED_ERP_PREAMBLE: preamble changed + */ +enum ieee80211_bss_change { + BSS_CHANGED_ASSOC = 1<<0, + BSS_CHANGED_ERP_CTS_PROT = 1<<1, + BSS_CHANGED_ERP_PREAMBLE = 1<<2, +}; + +/** + * struct ieee80211_bss_conf - holds the BSS's changing parameters + * + * This structure keeps information about a BSS (and an association + * to that BSS) that can change during the lifetime of the BSS. + * + * @assoc: association status + * @aid: association ID number, valid only when @assoc is true + * @use_cts_prot: use CTS protection + * @use_short_preamble: use 802.11b short preamble + */ +struct ieee80211_bss_conf { + /* association related data */ + bool assoc; + u16 aid; + /* erp related data */ + bool use_cts_prot; + bool use_short_preamble; +}; + /* Transmit control fields. This data structure is passed to low-level driver * with each TX frame. The low-level driver is responsible for configuring * the hardware to use given values (depending on what is supported). */ @@ -924,19 +961,6 @@ enum ieee80211_filter_flags { }; /** - * enum ieee80211_erp_change_flags - erp change flags - * - * These flags are used with the erp_ie_changed() callback in - * &struct ieee80211_ops to indicate which parameter(s) changed. - * @IEEE80211_ERP_CHANGE_PROTECTION: protection changed - * @IEEE80211_ERP_CHANGE_PREAMBLE: barker preamble mode changed - */ -enum ieee80211_erp_change_flags { - IEEE80211_ERP_CHANGE_PROTECTION = 1<<0, - IEEE80211_ERP_CHANGE_PREAMBLE = 1<<1, -}; - -/** * enum ieee80211_ampdu_mlme_action - A-MPDU actions * * These flags are used with the ampdu_action() callback in @@ -1004,6 +1028,14 @@ enum ieee80211_ampdu_mlme_action { * @config_interface: Handler for configuration requests related to interfaces * (e.g. BSSID changes.) * + * @bss_info_changed: Handler for configuration requests related to BSS + * parameters that may vary during BSS's lifespan, and may affect low + * level driver (e.g. assoc/disassoc status, erp parameters). + * This function should not be used if no BSS has been set, unless + * for association indication. The @changed parameter indicates which + * of the bss parameters has changed when a call is made. This callback + * has to be atomic. + * * @configure_filter: Configure the device's RX filter. * See the section "Frame filtering" for more information. * This callback must be implemented and atomic. @@ -1038,8 +1070,6 @@ enum ieee80211_ampdu_mlme_action { * @sta_notify: Notifies low level driver about addition or removal * of assocaited station or AP. * - * @erp_ie_changed: Handle ERP IE change notifications. Must be atomic. - * * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), * bursting) for a hardware TX queue. The @queue parameter uses the * %IEEE80211_TX_QUEUE_* constants. Must be atomic. @@ -1096,6 +1126,10 @@ struct ieee80211_ops { int (*config_interface)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_if_conf *conf); + void (*bss_info_changed)(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *info, + u32 changed); void (*configure_filter)(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags, @@ -1115,8 +1149,6 @@ struct ieee80211_ops { u32 short_retry, u32 long_retr); void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, enum sta_notify_cmd, const u8 *addr); - void (*erp_ie_changed)(struct ieee80211_hw *hw, u8 changes, - int cts_protection, int preamble); int (*conf_tx)(struct ieee80211_hw *hw, int queue, const struct ieee80211_tx_queue_params *params); int (*get_tx_stats)(struct ieee80211_hw *hw, diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 3500fe0..829872a 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 859682e..1770402 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 08a6c0c..72ecbf7 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 b1e7d17..866eb80 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 51c0f00..f9088fe 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 ba81cf54..5e631ce 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); -- 2.7.4