1f0706e82SJiri Benc /* 2f0706e82SJiri Benc * Copyright 2002-2005, Instant802 Networks, Inc. 3f0706e82SJiri Benc * Copyright 2005, Devicescape Software, Inc. 4f0706e82SJiri Benc * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5f0706e82SJiri Benc * 6f0706e82SJiri Benc * This program is free software; you can redistribute it and/or modify 7f0706e82SJiri Benc * it under the terms of the GNU General Public License version 2 as 8f0706e82SJiri Benc * published by the Free Software Foundation. 9f0706e82SJiri Benc */ 10f0706e82SJiri Benc 11f0706e82SJiri Benc #ifndef IEEE80211_I_H 12f0706e82SJiri Benc #define IEEE80211_I_H 13f0706e82SJiri Benc 14f0706e82SJiri Benc #include <linux/kernel.h> 15f0706e82SJiri Benc #include <linux/device.h> 16f0706e82SJiri Benc #include <linux/if_ether.h> 17f0706e82SJiri Benc #include <linux/interrupt.h> 18f0706e82SJiri Benc #include <linux/list.h> 19f0706e82SJiri Benc #include <linux/netdevice.h> 20f0706e82SJiri Benc #include <linux/skbuff.h> 21f0706e82SJiri Benc #include <linux/workqueue.h> 22f0706e82SJiri Benc #include <linux/types.h> 23f0706e82SJiri Benc #include <linux/spinlock.h> 24f0706e82SJiri Benc #include <net/wireless.h> 25f0706e82SJiri Benc #include "ieee80211_key.h" 26f0706e82SJiri Benc #include "sta_info.h" 27f0706e82SJiri Benc 28f0706e82SJiri Benc /* ieee80211.o internal definitions, etc. These are not included into 29f0706e82SJiri Benc * low-level drivers. */ 30f0706e82SJiri Benc 31f0706e82SJiri Benc #ifndef ETH_P_PAE 32f0706e82SJiri Benc #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */ 33f0706e82SJiri Benc #endif /* ETH_P_PAE */ 34f0706e82SJiri Benc 35f0706e82SJiri Benc #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08) 36f0706e82SJiri Benc 37f0706e82SJiri Benc struct ieee80211_local; 38f0706e82SJiri Benc 39f0706e82SJiri Benc #define BIT(x) (1 << (x)) 40f0706e82SJiri Benc 41f0706e82SJiri Benc #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3) 42f0706e82SJiri Benc 43f0706e82SJiri Benc /* Maximum number of broadcast/multicast frames to buffer when some of the 44f0706e82SJiri Benc * associated stations are using power saving. */ 45f0706e82SJiri Benc #define AP_MAX_BC_BUFFER 128 46f0706e82SJiri Benc 47f0706e82SJiri Benc /* Maximum number of frames buffered to all STAs, including multicast frames. 48f0706e82SJiri Benc * Note: increasing this limit increases the potential memory requirement. Each 49f0706e82SJiri Benc * frame can be up to about 2 kB long. */ 50f0706e82SJiri Benc #define TOTAL_MAX_TX_BUFFER 512 51f0706e82SJiri Benc 52f0706e82SJiri Benc /* Required encryption head and tailroom */ 53f0706e82SJiri Benc #define IEEE80211_ENCRYPT_HEADROOM 8 54f0706e82SJiri Benc #define IEEE80211_ENCRYPT_TAILROOM 12 55f0706e82SJiri Benc 56f0706e82SJiri Benc /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 57f0706e82SJiri Benc * reception of at least three fragmented frames. This limit can be increased 58f0706e82SJiri Benc * by changing this define, at the cost of slower frame reassembly and 59f0706e82SJiri Benc * increased memory use (about 2 kB of RAM per entry). */ 60f0706e82SJiri Benc #define IEEE80211_FRAGMENT_MAX 4 61f0706e82SJiri Benc 62f0706e82SJiri Benc struct ieee80211_fragment_entry { 63f0706e82SJiri Benc unsigned long first_frag_time; 64f0706e82SJiri Benc unsigned int seq; 65f0706e82SJiri Benc unsigned int rx_queue; 66f0706e82SJiri Benc unsigned int last_frag; 67f0706e82SJiri Benc unsigned int extra_len; 68f0706e82SJiri Benc struct sk_buff_head skb_list; 69f0706e82SJiri Benc int ccmp; /* Whether fragments were encrypted with CCMP */ 70f0706e82SJiri Benc u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 71f0706e82SJiri Benc }; 72f0706e82SJiri Benc 73f0706e82SJiri Benc 74f0706e82SJiri Benc struct ieee80211_sta_bss { 75f0706e82SJiri Benc struct list_head list; 76f0706e82SJiri Benc struct ieee80211_sta_bss *hnext; 77f0706e82SJiri Benc atomic_t users; 78f0706e82SJiri Benc 79f0706e82SJiri Benc u8 bssid[ETH_ALEN]; 80f0706e82SJiri Benc u8 ssid[IEEE80211_MAX_SSID_LEN]; 81f0706e82SJiri Benc size_t ssid_len; 82f0706e82SJiri Benc u16 capability; /* host byte order */ 83f0706e82SJiri Benc int hw_mode; 84f0706e82SJiri Benc int channel; 85f0706e82SJiri Benc int freq; 86f0706e82SJiri Benc int rssi, signal, noise; 87f0706e82SJiri Benc u8 *wpa_ie; 88f0706e82SJiri Benc size_t wpa_ie_len; 89f0706e82SJiri Benc u8 *rsn_ie; 90f0706e82SJiri Benc size_t rsn_ie_len; 91f0706e82SJiri Benc u8 *wmm_ie; 92f0706e82SJiri Benc size_t wmm_ie_len; 93f0706e82SJiri Benc #define IEEE80211_MAX_SUPP_RATES 32 94f0706e82SJiri Benc u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 95f0706e82SJiri Benc size_t supp_rates_len; 96f0706e82SJiri Benc int beacon_int; 97f0706e82SJiri Benc u64 timestamp; 98f0706e82SJiri Benc 99f0706e82SJiri Benc int probe_resp; 100f0706e82SJiri Benc unsigned long last_update; 101f0706e82SJiri Benc 102f0706e82SJiri Benc }; 103f0706e82SJiri Benc 104f0706e82SJiri Benc 105f0706e82SJiri Benc typedef enum { 106f0706e82SJiri Benc TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED 107f0706e82SJiri Benc } ieee80211_txrx_result; 108f0706e82SJiri Benc 109f0706e82SJiri Benc struct ieee80211_txrx_data { 110f0706e82SJiri Benc struct sk_buff *skb; 111f0706e82SJiri Benc struct net_device *dev; 112f0706e82SJiri Benc struct ieee80211_local *local; 113f0706e82SJiri Benc struct ieee80211_sub_if_data *sdata; 114f0706e82SJiri Benc struct sta_info *sta; 115f0706e82SJiri Benc u16 fc, ethertype; 116f0706e82SJiri Benc struct ieee80211_key *key; 117f0706e82SJiri Benc unsigned int fragmented:1; /* whether the MSDU was fragmented */ 118f0706e82SJiri Benc union { 119f0706e82SJiri Benc struct { 120f0706e82SJiri Benc struct ieee80211_tx_control *control; 121f0706e82SJiri Benc unsigned int unicast:1; 122f0706e82SJiri Benc unsigned int ps_buffered:1; 123f0706e82SJiri Benc unsigned int short_preamble:1; 124f0706e82SJiri Benc unsigned int probe_last_frag:1; 125f0706e82SJiri Benc struct ieee80211_hw_mode *mode; 126f0706e82SJiri Benc struct ieee80211_rate *rate; 127f0706e82SJiri Benc /* use this rate (if set) for last fragment; rate can 128f0706e82SJiri Benc * be set to lower rate for the first fragments, e.g., 129f0706e82SJiri Benc * when using CTS protection with IEEE 802.11g. */ 130f0706e82SJiri Benc struct ieee80211_rate *last_frag_rate; 131f0706e82SJiri Benc int last_frag_hwrate; 132f0706e82SJiri Benc int mgmt_interface; 133f0706e82SJiri Benc 134f0706e82SJiri Benc /* Extra fragments (in addition to the first fragment 135f0706e82SJiri Benc * in skb) */ 136f0706e82SJiri Benc int num_extra_frag; 137f0706e82SJiri Benc struct sk_buff **extra_frag; 138f0706e82SJiri Benc } tx; 139f0706e82SJiri Benc struct { 140f0706e82SJiri Benc struct ieee80211_rx_status *status; 141f0706e82SJiri Benc int sent_ps_buffered; 142f0706e82SJiri Benc int queue; 143f0706e82SJiri Benc int load; 144f0706e82SJiri Benc unsigned int in_scan:1; 145f0706e82SJiri Benc /* frame is destined to interface currently processed 146f0706e82SJiri Benc * (including multicast frames) */ 147f0706e82SJiri Benc unsigned int ra_match:1; 148f0706e82SJiri Benc } rx; 149f0706e82SJiri Benc } u; 150f0706e82SJiri Benc }; 151f0706e82SJiri Benc 152f0706e82SJiri Benc /* Stored in sk_buff->cb */ 153f0706e82SJiri Benc struct ieee80211_tx_packet_data { 154f0706e82SJiri Benc int ifindex; 155f0706e82SJiri Benc unsigned long jiffies; 156f0706e82SJiri Benc unsigned int req_tx_status:1; 157f0706e82SJiri Benc unsigned int do_not_encrypt:1; 158f0706e82SJiri Benc unsigned int requeue:1; 159f0706e82SJiri Benc unsigned int mgmt_iface:1; 160f0706e82SJiri Benc unsigned int queue:4; 161f0706e82SJiri Benc }; 162f0706e82SJiri Benc 163f0706e82SJiri Benc struct ieee80211_tx_stored_packet { 164f0706e82SJiri Benc struct ieee80211_tx_control control; 165f0706e82SJiri Benc struct sk_buff *skb; 166f0706e82SJiri Benc int num_extra_frag; 167f0706e82SJiri Benc struct sk_buff **extra_frag; 168f0706e82SJiri Benc int last_frag_rateidx; 169f0706e82SJiri Benc int last_frag_hwrate; 170f0706e82SJiri Benc struct ieee80211_rate *last_frag_rate; 171f0706e82SJiri Benc unsigned int last_frag_rate_ctrl_probe:1; 172f0706e82SJiri Benc }; 173f0706e82SJiri Benc 174f0706e82SJiri Benc typedef ieee80211_txrx_result (*ieee80211_tx_handler) 175f0706e82SJiri Benc (struct ieee80211_txrx_data *tx); 176f0706e82SJiri Benc 177f0706e82SJiri Benc typedef ieee80211_txrx_result (*ieee80211_rx_handler) 178f0706e82SJiri Benc (struct ieee80211_txrx_data *rx); 179f0706e82SJiri Benc 180f0706e82SJiri Benc struct ieee80211_if_ap { 181f0706e82SJiri Benc u8 *beacon_head, *beacon_tail; 182f0706e82SJiri Benc int beacon_head_len, beacon_tail_len; 183f0706e82SJiri Benc 184f0706e82SJiri Benc u8 ssid[IEEE80211_MAX_SSID_LEN]; 185f0706e82SJiri Benc size_t ssid_len; 186f0706e82SJiri Benc u8 *generic_elem; 187f0706e82SJiri Benc size_t generic_elem_len; 188f0706e82SJiri Benc 189f0706e82SJiri Benc /* yes, this looks ugly, but guarantees that we can later use 190f0706e82SJiri Benc * bitmap_empty :) 191f0706e82SJiri Benc * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */ 192f0706e82SJiri Benc u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; 193f0706e82SJiri Benc atomic_t num_sta_ps; /* number of stations in PS mode */ 194f0706e82SJiri Benc struct sk_buff_head ps_bc_buf; 195f0706e82SJiri Benc int dtim_period, dtim_count; 196f0706e82SJiri Benc int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ 197f0706e82SJiri Benc int max_ratectrl_rateidx; /* max TX rateidx for rate control */ 198f0706e82SJiri Benc int num_beacons; /* number of TXed beacon frames for this BSS */ 199f0706e82SJiri Benc }; 200f0706e82SJiri Benc 201f0706e82SJiri Benc struct ieee80211_if_wds { 202f0706e82SJiri Benc u8 remote_addr[ETH_ALEN]; 203f0706e82SJiri Benc struct sta_info *sta; 204f0706e82SJiri Benc }; 205f0706e82SJiri Benc 206f0706e82SJiri Benc struct ieee80211_if_vlan { 207f0706e82SJiri Benc u8 id; 208f0706e82SJiri Benc }; 209f0706e82SJiri Benc 210f0706e82SJiri Benc struct ieee80211_if_sta { 211f0706e82SJiri Benc enum { 212f0706e82SJiri Benc IEEE80211_DISABLED, IEEE80211_AUTHENTICATE, 213f0706e82SJiri Benc IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED, 214f0706e82SJiri Benc IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED 215f0706e82SJiri Benc } state; 216f0706e82SJiri Benc struct timer_list timer; 217f0706e82SJiri Benc struct work_struct work; 218f0706e82SJiri Benc u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 219f0706e82SJiri Benc u8 ssid[IEEE80211_MAX_SSID_LEN]; 220f0706e82SJiri Benc size_t ssid_len; 221f0706e82SJiri Benc u16 aid; 222f0706e82SJiri Benc u16 ap_capab, capab; 223f0706e82SJiri Benc u8 *extra_ie; /* to be added to the end of AssocReq */ 224f0706e82SJiri Benc size_t extra_ie_len; 225f0706e82SJiri Benc 226f0706e82SJiri Benc /* The last AssocReq/Resp IEs */ 227f0706e82SJiri Benc u8 *assocreq_ies, *assocresp_ies; 228f0706e82SJiri Benc size_t assocreq_ies_len, assocresp_ies_len; 229f0706e82SJiri Benc 230f0706e82SJiri Benc int auth_tries, assoc_tries; 231f0706e82SJiri Benc 232f0706e82SJiri Benc unsigned int ssid_set:1; 233f0706e82SJiri Benc unsigned int bssid_set:1; 234f0706e82SJiri Benc unsigned int prev_bssid_set:1; 235f0706e82SJiri Benc unsigned int authenticated:1; 236f0706e82SJiri Benc unsigned int associated:1; 237f0706e82SJiri Benc unsigned int probereq_poll:1; 238f0706e82SJiri Benc unsigned int use_protection:1; 239f0706e82SJiri Benc unsigned int create_ibss:1; 240f0706e82SJiri Benc unsigned int mixed_cell:1; 241f0706e82SJiri Benc unsigned int wmm_enabled:1; 242f0706e82SJiri Benc unsigned int auto_ssid_sel:1; 243f0706e82SJiri Benc unsigned int auto_bssid_sel:1; 244f0706e82SJiri Benc unsigned int auto_channel_sel:1; 245f0706e82SJiri Benc #define IEEE80211_STA_REQ_SCAN 0 246f0706e82SJiri Benc #define IEEE80211_STA_REQ_AUTH 1 247f0706e82SJiri Benc #define IEEE80211_STA_REQ_RUN 2 248f0706e82SJiri Benc unsigned long request; 249f0706e82SJiri Benc struct sk_buff_head skb_queue; 250f0706e82SJiri Benc 251f0706e82SJiri Benc int key_mgmt; 252f0706e82SJiri Benc unsigned long last_probe; 253f0706e82SJiri Benc 254f0706e82SJiri Benc #define IEEE80211_AUTH_ALG_OPEN BIT(0) 255f0706e82SJiri Benc #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) 256f0706e82SJiri Benc #define IEEE80211_AUTH_ALG_LEAP BIT(2) 257f0706e82SJiri Benc unsigned int auth_algs; /* bitfield of allowed auth algs */ 258f0706e82SJiri Benc int auth_alg; /* currently used IEEE 802.11 authentication algorithm */ 259f0706e82SJiri Benc int auth_transaction; 260f0706e82SJiri Benc 261f0706e82SJiri Benc unsigned long ibss_join_req; 262f0706e82SJiri Benc struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ 263f0706e82SJiri Benc u32 supp_rates_bits; 264f0706e82SJiri Benc 265f0706e82SJiri Benc int wmm_last_param_set; 266f0706e82SJiri Benc }; 267f0706e82SJiri Benc 268f0706e82SJiri Benc 269f0706e82SJiri Benc struct ieee80211_sub_if_data { 270f0706e82SJiri Benc struct list_head list; 271f0706e82SJiri Benc unsigned int type; 272f0706e82SJiri Benc 273f0706e82SJiri Benc struct wireless_dev wdev; 274f0706e82SJiri Benc 275f0706e82SJiri Benc struct net_device *dev; 276f0706e82SJiri Benc struct ieee80211_local *local; 277f0706e82SJiri Benc 278f0706e82SJiri Benc int mc_count; 279f0706e82SJiri Benc unsigned int allmulti:1; 280f0706e82SJiri Benc unsigned int promisc:1; 281f0706e82SJiri Benc 282f0706e82SJiri Benc struct net_device_stats stats; 283f0706e82SJiri Benc int drop_unencrypted; 284f0706e82SJiri Benc int eapol; /* 0 = process EAPOL frames as normal data frames, 285f0706e82SJiri Benc * 1 = send EAPOL frames through wlan#ap to hostapd 286f0706e82SJiri Benc * (default) */ 287f0706e82SJiri Benc int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized 288f0706e82SJiri Benc * port */ 289f0706e82SJiri Benc 290f0706e82SJiri Benc u16 sequence; 291f0706e82SJiri Benc 292f0706e82SJiri Benc /* Fragment table for host-based reassembly */ 293f0706e82SJiri Benc struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 294f0706e82SJiri Benc unsigned int fragment_next; 295f0706e82SJiri Benc 296f0706e82SJiri Benc #define NUM_DEFAULT_KEYS 4 297f0706e82SJiri Benc struct ieee80211_key *keys[NUM_DEFAULT_KEYS]; 298f0706e82SJiri Benc struct ieee80211_key *default_key; 299f0706e82SJiri Benc 300f0706e82SJiri Benc struct ieee80211_if_ap *bss; /* BSS that this device belongs to */ 301f0706e82SJiri Benc 302f0706e82SJiri Benc union { 303f0706e82SJiri Benc struct ieee80211_if_ap ap; 304f0706e82SJiri Benc struct ieee80211_if_wds wds; 305f0706e82SJiri Benc struct ieee80211_if_vlan vlan; 306f0706e82SJiri Benc struct ieee80211_if_sta sta; 307f0706e82SJiri Benc } u; 308f0706e82SJiri Benc int channel_use; 309f0706e82SJiri Benc int channel_use_raw; 310f0706e82SJiri Benc }; 311f0706e82SJiri Benc 312f0706e82SJiri Benc #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev) 313f0706e82SJiri Benc 314f0706e82SJiri Benc enum { 315f0706e82SJiri Benc IEEE80211_RX_MSG = 1, 316f0706e82SJiri Benc IEEE80211_TX_STATUS_MSG = 2, 317f0706e82SJiri Benc }; 318f0706e82SJiri Benc 319f0706e82SJiri Benc struct ieee80211_local { 320f0706e82SJiri Benc /* embed the driver visible part. 321f0706e82SJiri Benc * don't cast (use the static inlines below), but we keep 322f0706e82SJiri Benc * it first anyway so they become a no-op */ 323f0706e82SJiri Benc struct ieee80211_hw hw; 324f0706e82SJiri Benc 325f0706e82SJiri Benc const struct ieee80211_ops *ops; 326f0706e82SJiri Benc 327f0706e82SJiri Benc /* List of registered struct ieee80211_hw_mode */ 328f0706e82SJiri Benc struct list_head modes_list; 329f0706e82SJiri Benc 330f0706e82SJiri Benc struct net_device *mdev; /* wmaster# - "master" 802.11 device */ 331f0706e82SJiri Benc struct net_device *apdev; /* wlan#ap - management frames (hostapd) */ 332f0706e82SJiri Benc int open_count; 333f0706e82SJiri Benc int monitors; 334f0706e82SJiri Benc struct iw_statistics wstats; 335f0706e82SJiri Benc u8 wstats_flags; 336f0706e82SJiri Benc 337f0706e82SJiri Benc enum { 338f0706e82SJiri Benc IEEE80211_DEV_UNINITIALIZED = 0, 339f0706e82SJiri Benc IEEE80211_DEV_REGISTERED, 340f0706e82SJiri Benc IEEE80211_DEV_UNREGISTERED, 341f0706e82SJiri Benc } reg_state; 342f0706e82SJiri Benc 343f0706e82SJiri Benc /* Tasklet and skb queue to process calls from IRQ mode. All frames 344f0706e82SJiri Benc * added to skb_queue will be processed, but frames in 345f0706e82SJiri Benc * skb_queue_unreliable may be dropped if the total length of these 346f0706e82SJiri Benc * queues increases over the limit. */ 347f0706e82SJiri Benc #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 348f0706e82SJiri Benc struct tasklet_struct tasklet; 349f0706e82SJiri Benc struct sk_buff_head skb_queue; 350f0706e82SJiri Benc struct sk_buff_head skb_queue_unreliable; 351f0706e82SJiri Benc 352f0706e82SJiri Benc /* Station data structures */ 353f0706e82SJiri Benc spinlock_t sta_lock; /* mutex for STA data structures */ 354f0706e82SJiri Benc int num_sta; /* number of stations in sta_list */ 355f0706e82SJiri Benc struct list_head sta_list; 356f0706e82SJiri Benc struct list_head deleted_sta_list; 357f0706e82SJiri Benc struct sta_info *sta_hash[STA_HASH_SIZE]; 358f0706e82SJiri Benc struct timer_list sta_cleanup; 359f0706e82SJiri Benc 360f0706e82SJiri Benc unsigned long state[NUM_TX_DATA_QUEUES]; 361f0706e82SJiri Benc struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES]; 362f0706e82SJiri Benc struct tasklet_struct tx_pending_tasklet; 363f0706e82SJiri Benc 364f0706e82SJiri Benc int mc_count; /* total count of multicast entries in all interfaces */ 365f0706e82SJiri Benc int iff_allmultis, iff_promiscs; 366f0706e82SJiri Benc /* number of interfaces with corresponding IFF_ flags */ 367f0706e82SJiri Benc 368f0706e82SJiri Benc struct rate_control_ref *rate_ctrl; 369f0706e82SJiri Benc 370f0706e82SJiri Benc int next_mode; /* MODE_IEEE80211* 371f0706e82SJiri Benc * The mode preference for next channel change. This is 372f0706e82SJiri Benc * used to select .11g vs. .11b channels (or 4.9 GHz vs. 373f0706e82SJiri Benc * .11a) when the channel number is not unique. */ 374f0706e82SJiri Benc 375f0706e82SJiri Benc /* Supported and basic rate filters for different modes. These are 376f0706e82SJiri Benc * pointers to -1 terminated lists and rates in 100 kbps units. */ 377f0706e82SJiri Benc int *supp_rates[NUM_IEEE80211_MODES]; 378f0706e82SJiri Benc int *basic_rates[NUM_IEEE80211_MODES]; 379f0706e82SJiri Benc 380f0706e82SJiri Benc int rts_threshold; 381f0706e82SJiri Benc int cts_protect_erp_frames; 382f0706e82SJiri Benc int fragmentation_threshold; 383f0706e82SJiri Benc int short_retry_limit; /* dot11ShortRetryLimit */ 384f0706e82SJiri Benc int long_retry_limit; /* dot11LongRetryLimit */ 385f0706e82SJiri Benc int short_preamble; /* use short preamble with IEEE 802.11b */ 386f0706e82SJiri Benc 387f0706e82SJiri Benc struct crypto_blkcipher *wep_tx_tfm; 388f0706e82SJiri Benc struct crypto_blkcipher *wep_rx_tfm; 389f0706e82SJiri Benc u32 wep_iv; 390f0706e82SJiri Benc int key_tx_rx_threshold; /* number of times any key can be used in TX 391f0706e82SJiri Benc * or RX before generating a rekey 392f0706e82SJiri Benc * notification; 0 = notification disabled. */ 393f0706e82SJiri Benc 394f0706e82SJiri Benc int bridge_packets; /* bridge packets between associated stations and 395f0706e82SJiri Benc * deliver multicast frames both back to wireless 396f0706e82SJiri Benc * media and to the local net stack */ 397f0706e82SJiri Benc 398f0706e82SJiri Benc ieee80211_rx_handler *rx_pre_handlers; 399f0706e82SJiri Benc ieee80211_rx_handler *rx_handlers; 400f0706e82SJiri Benc ieee80211_tx_handler *tx_handlers; 401f0706e82SJiri Benc 402f0706e82SJiri Benc rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under 403f0706e82SJiri Benc * sta_bss_lock or sta_lock. */ 404f0706e82SJiri Benc struct list_head sub_if_list; 405f0706e82SJiri Benc int sta_scanning; 406f0706e82SJiri Benc int scan_channel_idx; 407f0706e82SJiri Benc enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; 408f0706e82SJiri Benc unsigned long last_scan_completed; 409f0706e82SJiri Benc struct delayed_work scan_work; 410f0706e82SJiri Benc struct net_device *scan_dev; 411f0706e82SJiri Benc struct ieee80211_channel *oper_channel, *scan_channel; 412f0706e82SJiri Benc struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode; 413f0706e82SJiri Benc u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; 414f0706e82SJiri Benc size_t scan_ssid_len; 415f0706e82SJiri Benc struct list_head sta_bss_list; 416f0706e82SJiri Benc struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE]; 417f0706e82SJiri Benc spinlock_t sta_bss_lock; 418f0706e82SJiri Benc #define IEEE80211_SCAN_MATCH_SSID BIT(0) 419f0706e82SJiri Benc #define IEEE80211_SCAN_WPA_ONLY BIT(1) 420f0706e82SJiri Benc #define IEEE80211_SCAN_EXTRA_INFO BIT(2) 421f0706e82SJiri Benc int scan_flags; 422f0706e82SJiri Benc 423f0706e82SJiri Benc /* SNMP counters */ 424f0706e82SJiri Benc /* dot11CountersTable */ 425f0706e82SJiri Benc u32 dot11TransmittedFragmentCount; 426f0706e82SJiri Benc u32 dot11MulticastTransmittedFrameCount; 427f0706e82SJiri Benc u32 dot11FailedCount; 428f0706e82SJiri Benc u32 dot11RetryCount; 429f0706e82SJiri Benc u32 dot11MultipleRetryCount; 430f0706e82SJiri Benc u32 dot11FrameDuplicateCount; 431f0706e82SJiri Benc u32 dot11ReceivedFragmentCount; 432f0706e82SJiri Benc u32 dot11MulticastReceivedFrameCount; 433f0706e82SJiri Benc u32 dot11TransmittedFrameCount; 434f0706e82SJiri Benc u32 dot11WEPUndecryptableCount; 435f0706e82SJiri Benc 436f0706e82SJiri Benc #ifdef CONFIG_MAC80211_LEDS 437f0706e82SJiri Benc int tx_led_counter, rx_led_counter; 438f0706e82SJiri Benc struct led_trigger *tx_led, *rx_led; 439f0706e82SJiri Benc char tx_led_name[32], rx_led_name[32]; 440f0706e82SJiri Benc #endif 441f0706e82SJiri Benc 442f0706e82SJiri Benc u32 channel_use; 443f0706e82SJiri Benc u32 channel_use_raw; 444f0706e82SJiri Benc u32 stat_time; 445f0706e82SJiri Benc struct timer_list stat_timer; 446f0706e82SJiri Benc 447f0706e82SJiri Benc enum { 448f0706e82SJiri Benc STA_ANTENNA_SEL_AUTO = 0, 449f0706e82SJiri Benc STA_ANTENNA_SEL_SW_CTRL = 1, 450f0706e82SJiri Benc STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2 451f0706e82SJiri Benc } sta_antenna_sel; 452f0706e82SJiri Benc 453f0706e82SJiri Benc int rate_ctrl_num_up, rate_ctrl_num_down; 454f0706e82SJiri Benc 455f0706e82SJiri Benc #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 456f0706e82SJiri Benc /* TX/RX handler statistics */ 457f0706e82SJiri Benc unsigned int tx_handlers_drop; 458f0706e82SJiri Benc unsigned int tx_handlers_queued; 459f0706e82SJiri Benc unsigned int tx_handlers_drop_unencrypted; 460f0706e82SJiri Benc unsigned int tx_handlers_drop_fragment; 461f0706e82SJiri Benc unsigned int tx_handlers_drop_wep; 462f0706e82SJiri Benc unsigned int tx_handlers_drop_not_assoc; 463f0706e82SJiri Benc unsigned int tx_handlers_drop_unauth_port; 464f0706e82SJiri Benc unsigned int rx_handlers_drop; 465f0706e82SJiri Benc unsigned int rx_handlers_queued; 466f0706e82SJiri Benc unsigned int rx_handlers_drop_nullfunc; 467f0706e82SJiri Benc unsigned int rx_handlers_drop_defrag; 468f0706e82SJiri Benc unsigned int rx_handlers_drop_short; 469f0706e82SJiri Benc unsigned int rx_handlers_drop_passive_scan; 470f0706e82SJiri Benc unsigned int tx_expand_skb_head; 471f0706e82SJiri Benc unsigned int tx_expand_skb_head_cloned; 472f0706e82SJiri Benc unsigned int rx_expand_skb_head; 473f0706e82SJiri Benc unsigned int rx_expand_skb_head2; 474f0706e82SJiri Benc unsigned int rx_handlers_fragments; 475f0706e82SJiri Benc unsigned int tx_status_drop; 476f0706e82SJiri Benc unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; 477f0706e82SJiri Benc unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; 478f0706e82SJiri Benc #define I802_DEBUG_INC(c) (c)++ 479f0706e82SJiri Benc #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 480f0706e82SJiri Benc #define I802_DEBUG_INC(c) do { } while (0) 481f0706e82SJiri Benc #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 482f0706e82SJiri Benc 483f0706e82SJiri Benc 484f0706e82SJiri Benc int default_wep_only; /* only default WEP keys are used with this 485f0706e82SJiri Benc * interface; this is used to decide when hwaccel 486f0706e82SJiri Benc * can be used with default keys */ 487f0706e82SJiri Benc int total_ps_buffered; /* total number of all buffered unicast and 488f0706e82SJiri Benc * multicast packets for power saving stations 489f0706e82SJiri Benc */ 490f0706e82SJiri Benc int allow_broadcast_always; /* whether to allow TX of broadcast frames 491f0706e82SJiri Benc * even when there are no associated STAs 492f0706e82SJiri Benc */ 493f0706e82SJiri Benc 494f0706e82SJiri Benc int wifi_wme_noack_test; 495f0706e82SJiri Benc unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ 496f0706e82SJiri Benc 497f0706e82SJiri Benc unsigned int enabled_modes; /* bitfield of allowed modes; 498f0706e82SJiri Benc * (1 << MODE_*) */ 499f0706e82SJiri Benc unsigned int hw_modes; /* bitfield of supported hardware modes; 500f0706e82SJiri Benc * (1 << MODE_*) */ 501f0706e82SJiri Benc 502f0706e82SJiri Benc int user_space_mlme; 503f0706e82SJiri Benc }; 504f0706e82SJiri Benc 505f0706e82SJiri Benc static inline struct ieee80211_local *hw_to_local( 506f0706e82SJiri Benc struct ieee80211_hw *hw) 507f0706e82SJiri Benc { 508f0706e82SJiri Benc return container_of(hw, struct ieee80211_local, hw); 509f0706e82SJiri Benc } 510f0706e82SJiri Benc 511f0706e82SJiri Benc static inline struct ieee80211_hw *local_to_hw( 512f0706e82SJiri Benc struct ieee80211_local *local) 513f0706e82SJiri Benc { 514f0706e82SJiri Benc return &local->hw; 515f0706e82SJiri Benc } 516f0706e82SJiri Benc 517f0706e82SJiri Benc enum ieee80211_link_state_t { 518f0706e82SJiri Benc IEEE80211_LINK_STATE_XOFF = 0, 519f0706e82SJiri Benc IEEE80211_LINK_STATE_PENDING, 520f0706e82SJiri Benc }; 521f0706e82SJiri Benc 522f0706e82SJiri Benc struct sta_attribute { 523f0706e82SJiri Benc struct attribute attr; 524f0706e82SJiri Benc ssize_t (*show)(const struct sta_info *, char *buf); 525f0706e82SJiri Benc ssize_t (*store)(struct sta_info *, const char *buf, size_t count); 526f0706e82SJiri Benc }; 527f0706e82SJiri Benc 528f0706e82SJiri Benc static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid) 529f0706e82SJiri Benc { 530f0706e82SJiri Benc /* 531f0706e82SJiri Benc * This format has ben mandated by the IEEE specifications, 532f0706e82SJiri Benc * so this line may not be changed to use the __set_bit() format. 533f0706e82SJiri Benc */ 534f0706e82SJiri Benc bss->tim[(aid)/8] |= 1<<((aid) % 8); 535f0706e82SJiri Benc } 536f0706e82SJiri Benc 537f0706e82SJiri Benc static inline void bss_tim_set(struct ieee80211_local *local, 538f0706e82SJiri Benc struct ieee80211_if_ap *bss, int aid) 539f0706e82SJiri Benc { 540f0706e82SJiri Benc spin_lock_bh(&local->sta_lock); 541f0706e82SJiri Benc __bss_tim_set(bss, aid); 542f0706e82SJiri Benc spin_unlock_bh(&local->sta_lock); 543f0706e82SJiri Benc } 544f0706e82SJiri Benc 545f0706e82SJiri Benc static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid) 546f0706e82SJiri Benc { 547f0706e82SJiri Benc /* 548f0706e82SJiri Benc * This format has ben mandated by the IEEE specifications, 549f0706e82SJiri Benc * so this line may not be changed to use the __clear_bit() format. 550f0706e82SJiri Benc */ 551f0706e82SJiri Benc bss->tim[(aid)/8] &= !(1<<((aid) % 8)); 552f0706e82SJiri Benc } 553f0706e82SJiri Benc 554f0706e82SJiri Benc static inline void bss_tim_clear(struct ieee80211_local *local, 555f0706e82SJiri Benc struct ieee80211_if_ap *bss, int aid) 556f0706e82SJiri Benc { 557f0706e82SJiri Benc spin_lock_bh(&local->sta_lock); 558f0706e82SJiri Benc __bss_tim_clear(bss, aid); 559f0706e82SJiri Benc spin_unlock_bh(&local->sta_lock); 560f0706e82SJiri Benc } 561f0706e82SJiri Benc 562f0706e82SJiri Benc /** 563f0706e82SJiri Benc * ieee80211_is_erp_rate - Check if a rate is an ERP rate 564f0706e82SJiri Benc * @phymode: The PHY-mode for this rate (MODE_IEEE80211...) 565f0706e82SJiri Benc * @rate: Transmission rate to check, in 100 kbps 566f0706e82SJiri Benc * 567f0706e82SJiri Benc * Check if a given rate is an Extended Rate PHY (ERP) rate. 568f0706e82SJiri Benc */ 569f0706e82SJiri Benc static inline int ieee80211_is_erp_rate(int phymode, int rate) 570f0706e82SJiri Benc { 571f0706e82SJiri Benc if (phymode == MODE_IEEE80211G) { 572f0706e82SJiri Benc if (rate != 10 && rate != 20 && 573f0706e82SJiri Benc rate != 55 && rate != 110) 574f0706e82SJiri Benc return 1; 575f0706e82SJiri Benc } 576f0706e82SJiri Benc return 0; 577f0706e82SJiri Benc } 578f0706e82SJiri Benc 579f0706e82SJiri Benc /* ieee80211.c */ 580f0706e82SJiri Benc int ieee80211_hw_config(struct ieee80211_local *local); 581f0706e82SJiri Benc int ieee80211_if_config(struct net_device *dev); 582f0706e82SJiri Benc int ieee80211_if_config_beacon(struct net_device *dev); 583f0706e82SJiri Benc struct ieee80211_key_conf * 584f0706e82SJiri Benc ieee80211_key_data2conf(struct ieee80211_local *local, 585f0706e82SJiri Benc const struct ieee80211_key *data); 586f0706e82SJiri Benc struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, 587f0706e82SJiri Benc int idx, size_t key_len, gfp_t flags); 588f0706e82SJiri Benc void ieee80211_key_free(struct ieee80211_key *key); 589f0706e82SJiri Benc void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb, 590f0706e82SJiri Benc struct ieee80211_rx_status *status, u32 msg_type); 591f0706e82SJiri Benc void ieee80211_prepare_rates(struct ieee80211_local *local, 592f0706e82SJiri Benc struct ieee80211_hw_mode *mode); 593f0706e82SJiri Benc void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx); 594f0706e82SJiri Benc int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr); 595f0706e82SJiri Benc void ieee80211_if_setup(struct net_device *dev); 596f0706e82SJiri Benc void ieee80211_if_mgmt_setup(struct net_device *dev); 597f0706e82SJiri Benc int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, 598f0706e82SJiri Benc const char *name); 599f0706e82SJiri Benc struct net_device_stats *ieee80211_dev_stats(struct net_device *dev); 600f0706e82SJiri Benc 601f0706e82SJiri Benc /* ieee80211_ioctl.c */ 602f0706e82SJiri Benc extern const struct iw_handler_def ieee80211_iw_handler_def; 603f0706e82SJiri Benc 604f0706e82SJiri Benc void ieee80211_update_default_wep_only(struct ieee80211_local *local); 605f0706e82SJiri Benc 606f0706e82SJiri Benc 607f0706e82SJiri Benc /* Least common multiple of the used rates (in 100 kbps). This is used to 608f0706e82SJiri Benc * calculate rate_inv values for each rate so that only integers are needed. */ 609f0706e82SJiri Benc #define CHAN_UTIL_RATE_LCM 95040 610f0706e82SJiri Benc /* 1 usec is 1/8 * (95040/10) = 1188 */ 611f0706e82SJiri Benc #define CHAN_UTIL_PER_USEC 1188 612f0706e82SJiri Benc /* Amount of bits to shift the result right to scale the total utilization 613f0706e82SJiri Benc * to values that will not wrap around 32-bit integers. */ 614f0706e82SJiri Benc #define CHAN_UTIL_SHIFT 9 615f0706e82SJiri Benc /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1): 616f0706e82SJiri Benc * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the 617f0706e82SJiri Benc * raw value with about 23 should give utilization in 10th of a percentage 618f0706e82SJiri Benc * (1/1000). However, utilization is only estimated and not all intervals 619f0706e82SJiri Benc * between frames etc. are calculated. 18 seems to give numbers that are closer 620f0706e82SJiri Benc * to the real maximum. */ 621f0706e82SJiri Benc #define CHAN_UTIL_PER_10MS 18 622f0706e82SJiri Benc #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC) 623f0706e82SJiri Benc #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC) 624f0706e82SJiri Benc 625f0706e82SJiri Benc 626f0706e82SJiri Benc /* ieee80211_ioctl.c */ 627f0706e82SJiri Benc int ieee80211_set_compression(struct ieee80211_local *local, 628f0706e82SJiri Benc struct net_device *dev, struct sta_info *sta); 629f0706e82SJiri Benc int ieee80211_init_client(struct net_device *dev); 630f0706e82SJiri Benc int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq); 631f0706e82SJiri Benc /* ieee80211_sta.c */ 632f0706e82SJiri Benc void ieee80211_sta_timer(unsigned long data); 633f0706e82SJiri Benc void ieee80211_sta_work(struct work_struct *work); 634f0706e82SJiri Benc void ieee80211_sta_scan_work(struct work_struct *work); 635f0706e82SJiri Benc void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, 636f0706e82SJiri Benc struct ieee80211_rx_status *rx_status); 637f0706e82SJiri Benc int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len); 638f0706e82SJiri Benc int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len); 639f0706e82SJiri Benc int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid); 640f0706e82SJiri Benc int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len); 641f0706e82SJiri Benc void ieee80211_sta_req_auth(struct net_device *dev, 642f0706e82SJiri Benc struct ieee80211_if_sta *ifsta); 643f0706e82SJiri Benc int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len); 644f0706e82SJiri Benc void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, 645f0706e82SJiri Benc struct ieee80211_rx_status *rx_status); 646f0706e82SJiri Benc void ieee80211_rx_bss_list_init(struct net_device *dev); 647f0706e82SJiri Benc void ieee80211_rx_bss_list_deinit(struct net_device *dev); 648f0706e82SJiri Benc int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len); 649f0706e82SJiri Benc struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, 650f0706e82SJiri Benc struct sk_buff *skb, u8 *bssid, 651f0706e82SJiri Benc u8 *addr); 652f0706e82SJiri Benc int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason); 653f0706e82SJiri Benc int ieee80211_sta_disassociate(struct net_device *dev, u16 reason); 654f0706e82SJiri Benc 655f0706e82SJiri Benc /* ieee80211_iface.c */ 656f0706e82SJiri Benc int ieee80211_if_add(struct net_device *dev, const char *name, 657f0706e82SJiri Benc struct net_device **new_dev, int type); 658f0706e82SJiri Benc void ieee80211_if_set_type(struct net_device *dev, int type); 659f0706e82SJiri Benc void ieee80211_if_reinit(struct net_device *dev); 660f0706e82SJiri Benc void __ieee80211_if_del(struct ieee80211_local *local, 661f0706e82SJiri Benc struct ieee80211_sub_if_data *sdata); 662f0706e82SJiri Benc int ieee80211_if_remove(struct net_device *dev, const char *name, int id); 663f0706e82SJiri Benc void ieee80211_if_free(struct net_device *dev); 664f0706e82SJiri Benc void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata); 665f0706e82SJiri Benc int ieee80211_if_add_mgmt(struct ieee80211_local *local); 666f0706e82SJiri Benc void ieee80211_if_del_mgmt(struct ieee80211_local *local); 667f0706e82SJiri Benc 668f0706e82SJiri Benc /* for wiphy privid */ 669f0706e82SJiri Benc extern void *mac80211_wiphy_privid; 670f0706e82SJiri Benc 671f0706e82SJiri Benc #endif /* IEEE80211_I_H */ 672