/* * Copyright 2002-2005, Instant802 Networks, Inc. * Copyright 2005, Devicescape Software, Inc. * Copyright 2006-2007 Jiri Benc * Copyright 2007-2010 Johannes Berg * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef IEEE80211_I_H #define IEEE80211_I_H #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "key.h" #include "sta_info.h" struct ieee80211_local; /* Maximum number of broadcast/multicast frames to buffer when some of the * associated stations are using power saving. */ #define AP_MAX_BC_BUFFER 128 /* Maximum number of frames buffered to all STAs, including multicast frames. * Note: increasing this limit increases the potential memory requirement. Each * frame can be up to about 2 kB long. */ #define TOTAL_MAX_TX_BUFFER 512 /* Required encryption head and tailroom */ #define IEEE80211_ENCRYPT_HEADROOM 8 #define IEEE80211_ENCRYPT_TAILROOM 18 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent * reception of at least three fragmented frames. This limit can be increased * by changing this define, at the cost of slower frame reassembly and * increased memory use (about 2 kB of RAM per entry). */ #define IEEE80211_FRAGMENT_MAX 4 /* * Time after which we ignore scan results and no longer report/use * them in any way. */ #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) #define TU_TO_EXP_TIME(x) (jiffies + usecs_to_jiffies((x) * 1024)) #define IEEE80211_DEFAULT_UAPSD_QUEUES \ (IEEE80211_WMM_IE_STA_QOSINFO_AC_BK | \ IEEE80211_WMM_IE_STA_QOSINFO_AC_BE | \ IEEE80211_WMM_IE_STA_QOSINFO_AC_VI | \ IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) #define IEEE80211_DEFAULT_MAX_SP_LEN \ IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL struct ieee80211_fragment_entry { unsigned long first_frag_time; unsigned int seq; unsigned int rx_queue; unsigned int last_frag; unsigned int extra_len; struct sk_buff_head skb_list; int ccmp; /* Whether fragments were encrypted with CCMP */ u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ }; struct ieee80211_bss { /* don't want to look up all the time */ size_t ssid_len; u8 ssid[IEEE80211_MAX_SSID_LEN]; u8 dtim_period; bool wmm_used; bool uapsd_supported; unsigned long last_probe_resp; #ifdef CONFIG_MAC80211_MESH u8 *mesh_id; size_t mesh_id_len; u8 *mesh_cfg; #endif #define IEEE80211_MAX_SUPP_RATES 32 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; size_t supp_rates_len; /* * During assocation, we save an ERP value from a probe response so * that we can feed ERP info to the driver when handling the * association completes. these fields probably won't be up-to-date * otherwise, you probably don't want to use them. */ bool has_erp_value; u8 erp_value; }; static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss) { #ifdef CONFIG_MAC80211_MESH return bss->mesh_cfg; #endif return NULL; } static inline u8 *bss_mesh_id(struct ieee80211_bss *bss) { #ifdef CONFIG_MAC80211_MESH return bss->mesh_id; #endif return NULL; } static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss) { #ifdef CONFIG_MAC80211_MESH return bss->mesh_id_len; #endif return 0; } typedef unsigned __bitwise__ ieee80211_tx_result; #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) #define TX_DROP ((__force ieee80211_tx_result) 1u) #define TX_QUEUED ((__force ieee80211_tx_result) 2u) #define IEEE80211_TX_FRAGMENTED BIT(0) #define IEEE80211_TX_UNICAST BIT(1) #define IEEE80211_TX_PS_BUFFERED BIT(2) struct ieee80211_tx_data { struct sk_buff *skb; struct ieee80211_local *local; struct ieee80211_sub_if_data *sdata; struct sta_info *sta; struct ieee80211_key *key; struct ieee80211_channel *channel; u16 ethertype; unsigned int flags; }; typedef unsigned __bitwise__ ieee80211_rx_result; #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) #define RX_QUEUED ((__force ieee80211_rx_result) 3u) #define IEEE80211_RX_IN_SCAN BIT(0) /* frame is destined to interface currently processed (incl. multicast frames) */ #define IEEE80211_RX_RA_MATCH BIT(1) #define IEEE80211_RX_AMSDU BIT(2) #define IEEE80211_RX_FRAGMENTED BIT(3) /* only add flags here that do not change with subframes of an aMPDU */ struct ieee80211_rx_data { struct sk_buff *skb; struct ieee80211_local *local; struct ieee80211_sub_if_data *sdata; struct sta_info *sta; struct ieee80211_key *key; unsigned int flags; int queue; u32 tkip_iv32; u16 tkip_iv16; }; struct beacon_data { u8 *head, *tail; int head_len, tail_len; int dtim_period; }; struct ieee80211_if_ap { struct beacon_data *beacon; struct list_head vlans; /* yes, this looks ugly, but guarantees that we can later use * bitmap_empty :) * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; struct sk_buff_head ps_bc_buf; atomic_t num_sta_ps; /* number of stations in PS mode */ int dtim_count; }; struct ieee80211_if_wds { struct sta_info *sta; u8 remote_addr[ETH_ALEN]; }; struct ieee80211_if_vlan { struct list_head list; /* used for all tx if the VLAN is configured to 4-addr mode */ struct sta_info *sta; }; struct mesh_stats { __u32 fwded_mcast; /* Mesh forwarded multicast frames */ __u32 fwded_unicast; /* Mesh forwarded unicast frames */ __u32 fwded_frames; /* Mesh total forwarded frames */ __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ __u32 dropped_frames_no_route; /* Not transmitted, no route found */ atomic_t estab_plinks; }; #define PREQ_Q_F_START 0x1 #define PREQ_Q_F_REFRESH 0x2 struct mesh_preq_queue { struct list_head list; u8 dst[ETH_ALEN]; u8 flags; }; enum ieee80211_work_type { IEEE80211_WORK_ABORT, IEEE80211_WORK_DIRECT_PROBE, IEEE80211_WORK_AUTH, IEEE80211_WORK_ASSOC, IEEE80211_WORK_REMAIN_ON_CHANNEL, }; /** * enum work_done_result - indicates what to do after work was done * * @WORK_DONE_DESTROY: This work item is no longer needed, destroy. * @WORK_DONE_REQUEUE: This work item was reset to be reused, and * should be requeued. */ enum work_done_result { WORK_DONE_DESTROY, WORK_DONE_REQUEUE, }; struct ieee80211_work { struct list_head list; struct rcu_head rcu_head; struct ieee80211_sub_if_data *sdata; enum work_done_result (*done)(struct ieee80211_work *wk, struct sk_buff *skb); struct ieee80211_channel *chan; enum nl80211_channel_type chan_type; unsigned long timeout; enum ieee80211_work_type type; u8 filter_ta[ETH_ALEN]; bool started; union { struct { int tries; u16 algorithm, transaction; u8 ssid[IEEE80211_MAX_SSID_LEN]; u8 ssid_len; u8 key[WLAN_KEY_LEN_WEP104]; u8 key_len, key_idx; bool privacy; } probe_auth; struct { struct cfg80211_bss *bss; const u8 *supp_rates; const u8 *ht_information_ie; enum ieee80211_smps_mode smps; int tries; u16 capability; u8 prev_bssid[ETH_ALEN]; u8 ssid[IEEE80211_MAX_SSID_LEN]; u8 ssid_len; u8 supp_rates_len; bool wmm_used, use_11n, uapsd_used; } assoc; struct { u32 duration; } remain; }; int ie_len; /* must be last */ u8 ie[0]; }; /* flags used in struct ieee80211_if_managed.flags */ enum ieee80211_sta_flags { IEEE80211_STA_BEACON_POLL = BIT(0), IEEE80211_STA_CONNECTION_POLL = BIT(1), IEEE80211_STA_CONTROL_PORT = BIT(2), IEEE80211_STA_DISABLE_11N = BIT(4), IEEE80211_STA_CSA_RECEIVED = BIT(5), IEEE80211_STA_MFP_ENABLED = BIT(6), IEEE80211_STA_UAPSD_ENABLED = BIT(7), IEEE80211_STA_NULLFUNC_ACKED = BIT(8), IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), }; struct ieee80211_if_managed { struct timer_list timer; struct timer_list conn_mon_timer; struct timer_list bcn_mon_timer; struct timer_list chswitch_timer; struct work_struct work; struct work_struct monitor_work; struct work_struct chswitch_work; struct work_struct beacon_connection_loss_work; unsigned long probe_timeout; int probe_send_count; struct mutex mtx; struct cfg80211_bss *associated; u8 bssid[ETH_ALEN]; u16 aid; struct sk_buff_head skb_queue; unsigned long timers_running; /* used for quiesce/restart */ bool powersave; /* powersave requested for this iface */ enum ieee80211_smps_mode req_smps, /* requested smps mode */ ap_smps; /* smps mode AP thinks we're in */ unsigned int flags; u32 beacon_crc; enum { IEEE80211_MFP_DISABLED, IEEE80211_MFP_OPTIONAL, IEEE80211_MFP_REQUIRED } mfp; /* management frame protection */ int wmm_last_param_set; u8 use_4addr; /* Signal strength from the last Beacon frame in the current BSS. */ int last_beacon_signal; /* * Weighted average of the signal strength from Beacon frames in the * current BSS. This is in units of 1/16 of the signal unit to maintain * accuracy and to speed up calculations, i.e., the value need to be * divided by 16 to get the actual value. */ int ave_beacon_signal; /* * Last Beacon frame signal strength average (ave_beacon_signal / 16) * that triggered a cqm event. 0 indicates that no event has been * generated for the current association. */ int last_cqm_event_signal; }; enum ieee80211_ibss_request { IEEE80211_IBSS_REQ_RUN = 0, }; struct ieee80211_if_ibss { struct timer_list timer; struct work_struct work; struct sk_buff_head skb_queue; unsigned long request; unsigned long last_scan_completed; bool timer_running; bool fixed_bssid; bool fixed_channel; bool privacy; u8 bssid[ETH_ALEN]; u8 ssid[IEEE80211_MAX_SSID_LEN]; u8 ssid_len, ie_len; u8 *ie; struct ieee80211_channel *channel; unsigned long ibss_join_req; /* probe response/beacon for IBSS */ struct sk_buff *presp, *skb; enum { IEEE80211_IBSS_MLME_SEARCH, IEEE80211_IBSS_MLME_JOINED, } state; }; struct ieee80211_if_mesh { struct work_struct work; struct timer_list housekeeping_timer; struct timer_list mesh_path_timer; struct timer_list mesh_path_root_timer; struct sk_buff_head skb_queue; unsigned long timers_running; unsigned long wrkq_flags; u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; size_t mesh_id_len; /* Active Path Selection Protocol Identifier */ u8 mesh_pp_id; /* Active Path Selection Metric Identifier */ u8 mesh_pm_id; /* Congestion Control Mode Identifier */ u8 mesh_cc_id; /* Synchronization Protocol Identifier */ u8 mesh_sp_id; /* Authentication Protocol Identifier */ u8 mesh_auth_id; /* Local mesh Sequence Number */ u32 sn; /* Last used PREQ ID */ u32 preq_id; atomic_t mpaths; /* Timestamp of last SN update */ unsigned long last_sn_update; /* Timestamp of last SN sent */ unsigned long last_preq; struct mesh_rmc *rmc; spinlock_t mesh_preq_queue_lock; struct mesh_preq_queue preq_queue; int preq_queue_len; struct mesh_stats mshstats; struct mesh_config mshcfg; u32 mesh_seqnum; bool accepting_plinks; }; #ifdef CONFIG_MAC80211_MESH #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ do { (msh)->mshstats.name++; } while (0) #else #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ do { } while (0) #endif /** * enum ieee80211_sub_if_data_flags - virtual interface flags * * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets * @IEEE80211_SDATA_PROMISC: interface is promisc * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between * associated stations and deliver multicast frames both * back to wireless media and to the local net stack. */ enum ieee80211_sub_if_data_flags { IEEE80211_SDATA_ALLMULTI = BIT(0), IEEE80211_SDATA_PROMISC = BIT(1), IEEE80211_SDATA_OPERATING_GMODE = BIT(2), IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), }; struct ieee80211_sub_if_data { struct list_head list; struct wireless_dev wdev; /* keys */ struct list_head key_list; struct net_device *dev; struct ieee80211_local *local; unsigned int flags; int drop_unencrypted; char name[IFNAMSIZ]; /* * keep track of whether the HT opmode (stored in * vif.bss_info.ht_operation_mode) is valid. */ bool ht_opmode_valid; /* Fragment table for host-based reassembly */ struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; unsigned int fragment_next; #define NUM_DEFAULT_KEYS 4 #define NUM_DEFAULT_MGMT_KEYS 2 struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; struct ieee80211_key *default_key; struct ieee80211_key *default_mgmt_key; u16 sequence_number; /* * AP this belongs to: self in AP mode and * corresponding AP in VLAN mode, NULL for * all others (might be needed later in IBSS) */ struct ieee80211_if_ap *bss; /* bitmap of allowed (non-MCS) rate indexes for rate control */ u32 rc_rateidx_mask[IEEE80211_NUM_BANDS]; union { struct ieee80211_if_ap ap; struct ieee80211_if_wds wds; struct ieee80211_if_vlan vlan; struct ieee80211_if_managed mgd; struct ieee80211_if_ibss ibss; #ifdef CONFIG_MAC80211_MESH struct ieee80211_if_mesh mesh; #endif u32 mntr_flags; } u; #ifdef CONFIG_MAC80211_DEBUGFS struct { struct dentry *dir; struct dentry *default_key; struct dentry *default_mgmt_key; } debugfs; #endif /* must be last, dynamically sized area in this! */ struct ieee80211_vif vif; }; static inline struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) { return container_of(p, struct ieee80211_sub_if_data, vif); } static inline void ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata, u8 mesh_id_len, u8 *mesh_id) { #ifdef CONFIG_MAC80211_MESH struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; ifmsh->mesh_id_len = mesh_id_len; memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len); #else WARN_ON(1); #endif } enum { IEEE80211_RX_MSG = 1, IEEE80211_TX_STATUS_MSG = 2, IEEE80211_DELBA_MSG = 3, IEEE80211_ADDBA_MSG = 4, }; enum queue_stop_reason { IEEE80211_QUEUE_STOP_REASON_DRIVER, IEEE80211_QUEUE_STOP_REASON_PS, IEEE80211_QUEUE_STOP_REASON_CSA, IEEE80211_QUEUE_STOP_REASON_AGGREGATION, IEEE80211_QUEUE_STOP_REASON_SUSPEND, IEEE80211_QUEUE_STOP_REASON_SKB_ADD, }; /** * mac80211 scan flags - currently active scan mode * * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as * well be on the operating channel * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to * determine if we are on the operating channel or not * @SCAN_OFF_CHANNEL: We're off our operating channel for scanning, * gets only set in conjunction with SCAN_SW_SCANNING */ enum { SCAN_SW_SCANNING, SCAN_HW_SCANNING, SCAN_OFF_CHANNEL, }; /** * enum mac80211_scan_state - scan state machine states * * @SCAN_DECISION: Main entry point to the scan state machine, this state * determines if we should keep on scanning or switch back to the * operating channel * @SCAN_SET_CHANNEL: Set the next channel to be scanned * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses * @SCAN_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP * about us leaving the channel and stop all associated STA interfaces * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the * AP about us being back and restart all associated STA interfaces */ enum mac80211_scan_state { SCAN_DECISION, SCAN_SET_CHANNEL, SCAN_SEND_PROBE, SCAN_LEAVE_OPER_CHANNEL, SCAN_ENTER_OPER_CHANNEL, }; struct ieee80211_local { /* embed the driver visible part. * don't cast (use the static inlines below), but we keep * it first anyway so they become a no-op */ struct ieee80211_hw hw; const struct ieee80211_ops *ops; /* * work stuff, potentially off-channel (in the future) */ struct mutex work_mtx; struct list_head work_list; struct timer_list work_timer; struct work_struct work_work; struct sk_buff_head work_skb_queue; /* * private workqueue to mac80211. mac80211 makes this accessible * via ieee80211_queue_work() */ struct workqueue_struct *workqueue; unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ spinlock_t queue_stop_reason_lock; int open_count; int monitors, cooked_mntrs; /* number of interfaces with corresponding FIF_ flags */ int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll; unsigned int filter_flags; /* FIF_* */ /* protects the aggregated multicast list and filter calls */ spinlock_t filter_lock; /* used for uploading changed mc list */ struct work_struct reconfig_filter; /* used to reconfigure hardware SM PS */ struct work_struct recalc_smps; /* aggregated multicast list */ struct netdev_hw_addr_list mc_list; bool tim_in_locked_section; /* see ieee80211_beacon_get() */ /* * suspended is true if we finished all the suspend _and_ we have * not yet come up from resume. This is to be used by mac80211 * to ensure driver sanity during suspend and mac80211's own * sanity. It can eventually be used for WoW as well. */ bool suspended; /* * Resuming is true while suspended, but when we're reprogramming the * hardware -- at that time it's allowed to use ieee80211_queue_work() * again even though some other parts of the stack are still suspended * and we still drop received frames to avoid waking the stack. */ bool resuming; /* * quiescing is true during the suspend process _only_ to * ease timer cancelling etc. */ bool quiescing; /* device is started */ bool started; int tx_headroom; /* required headroom for hardware/radiotap */ /* Tasklet and skb queue to process calls from IRQ mode. All frames * added to skb_queue will be processed, but frames in * skb_queue_unreliable may be dropped if the total length of these * queues increases over the limit. */ #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 struct tasklet_struct tasklet; struct sk_buff_head skb_queue; struct sk_buff_head skb_queue_unreliable; /* Station data */ /* * The mutex only protects the list and counter, * reads are done in RCU. * Additionally, the lock protects the hash table, * the pending list and each BSS's TIM bitmap. */ struct mutex sta_mtx; spinlock_t sta_lock; unsigned long num_sta; struct list_head sta_list, sta_pending_list; struct sta_info *sta_hash[STA_HASH_SIZE]; struct timer_list sta_cleanup; struct work_struct sta_finish_work; int sta_generation; struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; struct tasklet_struct tx_pending_tasklet; /* * This lock is used to prevent concurrent A-MPDU * session start/stop processing, this thus also * synchronises the ->ampdu_action() callback to * drivers and limits it to one at a time. */ spinlock_t ampdu_lock; /* number of interfaces with corresponding IFF_ flags */ atomic_t iff_allmultis, iff_promiscs; struct rate_control_ref *rate_ctrl; struct crypto_blkcipher *wep_tx_tfm; struct crypto_blkcipher *wep_rx_tfm; u32 wep_iv; /* see iface.c */ struct list_head interfaces; struct mutex iflist_mtx; /* * Key lock, protects sdata's key_list and sta_info's * key pointers (write access, they're RCU.) */ spinlock_t key_lock; /* Scanning and BSS list */ struct mutex scan_mtx; unsigned long scanning; struct cfg80211_ssid scan_ssid; struct cfg80211_scan_request *int_scan_req; struct cfg80211_scan_request *scan_req, *hw_scan_req; struct ieee80211_channel *scan_channel; enum ieee80211_band hw_scan_band; int scan_channel_idx; int scan_ies_len; unsigned long leave_oper_channel_time; enum mac80211_scan_state next_scan_state; struct delayed_work scan_work; struct ieee80211_sub_if_data *scan_sdata; enum nl80211_channel_type _oper_channel_type; struct ieee80211_channel *oper_channel, *csa_channel; /* Temporary remain-on-channel for off-channel operations */ struct ieee80211_channel *tmp_channel; enum nl80211_channel_type tmp_channel_type; /* SNMP counters */ /* dot11CountersTable */ u32 dot11TransmittedFragmentCount; u32 dot11MulticastTransmittedFrameCount; u32 dot11FailedCount; u32 dot11RetryCount; u32 dot11MultipleRetryCount; u32 dot11FrameDuplicateCount; u32 dot11ReceivedFragmentCount; u32 dot11MulticastReceivedFrameCount; u32 dot11TransmittedFrameCount; #ifdef CONFIG_MAC80211_LEDS int tx_led_counter, rx_led_counter; struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led; char tx_led_name[32], rx_led_name[32], assoc_led_name[32], radio_led_name[32]; #endif #ifdef CONFIG_MAC80211_DEBUG_COUNTERS /* TX/RX handler statistics */ unsigned int tx_handlers_drop; unsigned int tx_handlers_queued; unsigned int tx_handlers_drop_unencrypted; unsigned int tx_handlers_drop_fragment; unsigned int tx_handlers_drop_wep; unsigned int tx_handlers_drop_not_assoc; unsigned int tx_handlers_drop_unauth_port; unsigned int rx_handlers_drop; unsigned int rx_handlers_queued; unsigned int rx_handlers_drop_nullfunc; unsigned int rx_handlers_drop_defrag; unsigned int rx_handlers_drop_short; unsigned int rx_handlers_drop_passive_scan; unsigned int tx_expand_skb_head; unsigned int tx_expand_skb_head_cloned; unsigned int rx_expand_skb_head; unsigned int rx_expand_skb_head2; unsigned int rx_handlers_fragments; unsigned int tx_status_drop; #define I802_DEBUG_INC(c) (c)++ #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ #define I802_DEBUG_INC(c) do { } while (0) #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ int total_ps_buffered; /* total number of all buffered unicast and * multicast packets for power saving stations */ int wifi_wme_noack_test; unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ /* * Bitmask of enabled u-apsd queues, * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association * to take effect. */ unsigned int uapsd_queues; /* * Maximum number of buffered frames AP can deliver during a * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. * Needs a new association to take effect. */ unsigned int uapsd_max_sp_len; bool pspolling; bool offchannel_ps_enabled; /* * PS can only be enabled when we have exactly one managed * interface (and monitors) in PS, this then points there. */ struct ieee80211_sub_if_data *ps_sdata; struct work_struct dynamic_ps_enable_work; struct work_struct dynamic_ps_disable_work; struct timer_list dynamic_ps_timer; struct notifier_block network_latency_notifier; struct notifier_block ifa_notifier; int user_power_level; /* in dBm */ int power_constr_level; /* in dBm */ enum ieee80211_smps_mode smps_mode; struct work_struct restart_work; #ifdef CONFIG_MAC80211_DEBUGFS struct local_debugfsdentries { struct dentry *rcdir; struct dentry *stations; struct dentry *keys; } debugfs; #endif }; static inline struct ieee80211_sub_if_data * IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) { return netdev_priv(dev); } /* this struct represents 802.11n's RA/TID combination along with our vif */ struct ieee80211_ra_tid { struct ieee80211_vif *vif; u8 ra[ETH_ALEN]; u16 tid; }; /* Parsed Information Elements */ struct ieee802_11_elems { u8 *ie_start; size_t total_len; /* pointers to IEs */ u8 *ssid; u8 *supp_rates; u8 *fh_params; u8 *ds_params; u8 *cf_params; struct ieee80211_tim_ie *tim; u8 *ibss_params; u8 *challenge; u8 *wpa; u8 *rsn; u8 *erp_info; u8 *ext_supp_rates; u8 *wmm_info; u8 *wmm_param; struct ieee80211_ht_cap *ht_cap_elem; struct ieee80211_ht_info *ht_info_elem; struct ieee80211_meshconf_ie *mesh_config; u8 *mesh_id; u8 *peer_link; u8 *preq; u8 *prep; u8 *perr; struct ieee80211_rann_ie *rann; u8 *ch_switch_elem; u8 *country_elem; u8 *pwr_constr_elem; u8 *quiet_elem; /* first quite element */ u8 *timeout_int; /* length of them, respectively */ u8 ssid_len; u8 supp_rates_len; u8 fh_params_len; u8 ds_params_len; u8 cf_params_len; u8 tim_len; u8 ibss_params_len; u8 challenge_len; u8 wpa_len; u8 rsn_len; u8 erp_info_len; u8 ext_supp_rates_len; u8 wmm_info_len; u8 wmm_param_len; u8 mesh_id_len; u8 peer_link_len; u8 preq_len; u8 prep_len; u8 perr_len; u8 ch_switch_elem_len; u8 country_elem_len; u8 pwr_constr_elem_len; u8 quiet_elem_len; u8 num_of_quiet_elem; /* can be more the one */ u8 timeout_int_len; }; static inline struct ieee80211_local *hw_to_local( struct ieee80211_hw *hw) { return container_of(hw, struct ieee80211_local, hw); } static inline struct ieee80211_hw *local_to_hw( struct ieee80211_local *local) { return &local->hw; } static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) { return compare_ether_addr(raddr, addr) == 0 || is_broadcast_ether_addr(raddr); } int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, u32 changed); void ieee80211_configure_filter(struct ieee80211_local *local); u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); extern bool ieee80211_disable_40mhz_24ghz; /* STA code */ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, struct cfg80211_auth_request *req); int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, struct cfg80211_assoc_request *req); int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, struct cfg80211_deauth_request *req, void *cookie); int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, struct cfg80211_disassoc_request *req, void *cookie); int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type, bool channel_type_valid, const u8 *buf, size_t len, u64 *cookie); ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); void ieee80211_send_pspoll(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata); void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency); int ieee80211_max_network_latency(struct notifier_block *nb, unsigned long data, void *dummy); int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, struct ieee80211_channel_sw_ie *sw_elem, struct ieee80211_bss *bss, u64 timestamp); void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); /* IBSS code */ void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); ieee80211_rx_result ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, u8 *bssid, u8 *addr, u32 supp_rates, gfp_t gfp); int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, struct cfg80211_ibss_params *params); int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata); void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata); /* scan/BSS handling */ void ieee80211_scan_work(struct work_struct *work); int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata, const u8 *ssid, u8 ssid_len, struct ieee80211_channel *chan); int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, struct cfg80211_scan_request *req); void ieee80211_scan_cancel(struct ieee80211_local *local); ieee80211_rx_result ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 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, struct ieee80211_channel *channel, bool beacon); struct ieee80211_bss * ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq, u8 *ssid, u8 ssid_len); void ieee80211_rx_bss_put(struct ieee80211_local *local, struct ieee80211_bss *bss); /* off-channel helpers */ void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local); void ieee80211_offchannel_stop_station(struct ieee80211_local *local); void ieee80211_offchannel_return(struct ieee80211_local *local, bool enable_beaconing); /* interface handling */ int ieee80211_iface_init(void); void ieee80211_iface_exit(void); int ieee80211_if_add(struct ieee80211_local *local, const char *name, struct net_device **new_dev, enum nl80211_iftype type, struct vif_params *params); int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, enum nl80211_iftype type); void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); void ieee80211_remove_interfaces(struct ieee80211_local *local); u32 __ieee80211_recalc_idle(struct ieee80211_local *local); void ieee80211_recalc_idle(struct ieee80211_local *local); static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) { return netif_running(sdata->dev); } /* tx handling */ void ieee80211_clear_tx_pending(struct ieee80211_local *local); void ieee80211_tx_pending(unsigned long data); netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev); netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev); /* * radiotap header for status frames */ struct ieee80211_tx_status_rtap_hdr { struct ieee80211_radiotap_header hdr; u8 rate; u8 padding_for_rate; __le16 tx_flags; u8 data_retries; } __attribute__ ((packed)); /* HT */ void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband, struct ieee80211_ht_cap *ht_cap_ie, struct ieee80211_sta_ht_cap *ht_cap); void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn); void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, const u8 *da, u16 tid, u16 initiator, u16 reason_code); int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, enum ieee80211_smps_mode smps, const u8 *da, const u8 *bssid); void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, u16 initiator, u16 reason); void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta); void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, struct sta_info *sta, struct ieee80211_mgmt *mgmt, size_t len); void ieee80211_process_addba_resp(struct ieee80211_local *local, struct sta_info *sta, struct ieee80211_mgmt *mgmt, size_t len); void ieee80211_process_addba_request(struct ieee80211_local *local, struct sta_info *sta, struct ieee80211_mgmt *mgmt, size_t len); int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, enum ieee80211_back_parties initiator); int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, enum ieee80211_back_parties initiator); /* Spectrum management */ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, size_t len); /* Suspend/resume and hw reconfiguration */ int ieee80211_reconfig(struct ieee80211_local *local); void ieee80211_stop_device(struct ieee80211_local *local); #ifdef CONFIG_PM int __ieee80211_suspend(struct ieee80211_hw *hw); static inline int __ieee80211_resume(struct ieee80211_hw *hw) { return ieee80211_reconfig(hw_to_local(hw)); } #else static inline int __ieee80211_suspend(struct ieee80211_hw *hw) { return 0; } static inline int __ieee80211_resume(struct ieee80211_hw *hw) { return 0; } #endif /* utility functions/constants */ extern void *mac80211_wiphy_privid; /* for wiphy privid */ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, enum nl80211_iftype type); int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, int rate, int erp, int short_preamble); void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx, struct ieee80211_hdr *hdr, const u8 *tsc, gfp_t gfp); void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata); void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); void ieee802_11_parse_elems(u8 *start, size_t len, struct ieee802_11_elems *elems); u32 ieee802_11_parse_elems_crc(u8 *start, size_t len, struct ieee802_11_elems *elems, u64 filter, u32 crc); u32 ieee80211_mandatory_rates(struct ieee80211_local *local, enum ieee80211_band band); void ieee80211_dynamic_ps_enable_work(struct work_struct *work); void ieee80211_dynamic_ps_disable_work(struct work_struct *work); void ieee80211_dynamic_ps_timer(unsigned long data); void ieee80211_send_nullfunc(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, int powersave); void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, struct ieee80211_hdr *hdr); void ieee80211_beacon_connection_loss_work(struct work_struct *work); void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, enum queue_stop_reason reason); void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, enum queue_stop_reason reason); void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, enum queue_stop_reason reason); void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, enum queue_stop_reason reason); void ieee80211_add_pending_skb(struct ieee80211_local *local, struct sk_buff *skb); int ieee80211_add_pending_skbs(struct ieee80211_local *local, struct sk_buff_head *skbs); void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, u16 transaction, u16 auth_alg, u8 *extra, size_t extra_len, const u8 *bssid, const u8 *key, u8 key_len, u8 key_idx); int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, const u8 *ie, size_t ie_len, enum ieee80211_band band); void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, const u8 *ssid, size_t ssid_len, const u8 *ie, size_t ie_len); void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, const size_t supp_rates_len, const u8 *supp_rates); u32 ieee80211_sta_get_rates(struct ieee80211_local *local, struct ieee802_11_elems *elems, enum ieee80211_band band); int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, enum ieee80211_smps_mode smps_mode); void ieee80211_recalc_smps(struct ieee80211_local *local, struct ieee80211_sub_if_data *forsdata); size_t ieee80211_ie_split(const u8 *ies, size_t ielen, const u8 *ids, int n_ids, size_t offset); size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); /* internal work items */ void ieee80211_work_init(struct ieee80211_local *local); void ieee80211_add_work(struct ieee80211_work *wk); void free_work(struct ieee80211_work *wk); void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata); ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type, unsigned int duration, u64 *cookie); int ieee80211_wk_cancel_remain_on_channel( struct ieee80211_sub_if_data *sdata, u64 cookie); /* channel management */ enum ieee80211_chan_mode { CHAN_MODE_UNDEFINED, CHAN_MODE_HOPPING, CHAN_MODE_FIXED, }; enum ieee80211_chan_mode ieee80211_get_channel_mode(struct ieee80211_local *local, struct ieee80211_sub_if_data *ignore); bool ieee80211_set_channel_type(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata, enum nl80211_channel_type chantype); #ifdef CONFIG_MAC80211_NOINLINE #define debug_noinline noinline #else #define debug_noinline #endif #endif /* IEEE80211_I_H */