ieee80211_i.h 51 KB

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  1. /*
  2. * Copyright 2002-2005, Instant802 Networks, Inc.
  3. * Copyright 2005, Devicescape Software, Inc.
  4. * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
  5. * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net>
  6. *
  7. * This program is free software; you can redistribute it and/or modify
  8. * it under the terms of the GNU General Public License version 2 as
  9. * published by the Free Software Foundation.
  10. */
  11. #ifndef IEEE80211_I_H
  12. #define IEEE80211_I_H
  13. #include <linux/kernel.h>
  14. #include <linux/device.h>
  15. #include <linux/if_ether.h>
  16. #include <linux/interrupt.h>
  17. #include <linux/list.h>
  18. #include <linux/netdevice.h>
  19. #include <linux/skbuff.h>
  20. #include <linux/workqueue.h>
  21. #include <linux/types.h>
  22. #include <linux/spinlock.h>
  23. #include <linux/etherdevice.h>
  24. #include <linux/leds.h>
  25. #include <linux/idr.h>
  26. #include <net/ieee80211_radiotap.h>
  27. #include <net/cfg80211.h>
  28. #include <net/mac80211.h>
  29. #include "key.h"
  30. #include "sta_info.h"
  31. #include "debug.h"
  32. struct ieee80211_local;
  33. /* Maximum number of broadcast/multicast frames to buffer when some of the
  34. * associated stations are using power saving. */
  35. #define AP_MAX_BC_BUFFER 128
  36. /* Maximum number of frames buffered to all STAs, including multicast frames.
  37. * Note: increasing this limit increases the potential memory requirement. Each
  38. * frame can be up to about 2 kB long. */
  39. #define TOTAL_MAX_TX_BUFFER 512
  40. /* Required encryption head and tailroom */
  41. #define IEEE80211_ENCRYPT_HEADROOM 8
  42. #define IEEE80211_ENCRYPT_TAILROOM 18
  43. /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
  44. * reception of at least three fragmented frames. This limit can be increased
  45. * by changing this define, at the cost of slower frame reassembly and
  46. * increased memory use (about 2 kB of RAM per entry). */
  47. #define IEEE80211_FRAGMENT_MAX 4
  48. /* power level hasn't been configured (or set to automatic) */
  49. #define IEEE80211_UNSET_POWER_LEVEL INT_MIN
  50. /*
  51. * Some APs experience problems when working with U-APSD. Decrease the
  52. * probability of that happening by using legacy mode for all ACs but VO.
  53. * The AP that caused us trouble was a Cisco 4410N. It ignores our
  54. * setting, and always treats non-VO ACs as legacy.
  55. */
  56. #define IEEE80211_DEFAULT_UAPSD_QUEUES \
  57. IEEE80211_WMM_IE_STA_QOSINFO_AC_VO
  58. #define IEEE80211_DEFAULT_MAX_SP_LEN \
  59. IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
  60. #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */)
  61. struct ieee80211_fragment_entry {
  62. unsigned long first_frag_time;
  63. unsigned int seq;
  64. unsigned int rx_queue;
  65. unsigned int last_frag;
  66. unsigned int extra_len;
  67. struct sk_buff_head skb_list;
  68. int ccmp; /* Whether fragments were encrypted with CCMP */
  69. u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
  70. };
  71. struct ieee80211_bss {
  72. u32 device_ts_beacon, device_ts_presp;
  73. bool wmm_used;
  74. bool uapsd_supported;
  75. #define IEEE80211_MAX_SUPP_RATES 32
  76. u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  77. size_t supp_rates_len;
  78. struct ieee80211_rate *beacon_rate;
  79. /*
  80. * During association, we save an ERP value from a probe response so
  81. * that we can feed ERP info to the driver when handling the
  82. * association completes. these fields probably won't be up-to-date
  83. * otherwise, you probably don't want to use them.
  84. */
  85. bool has_erp_value;
  86. u8 erp_value;
  87. /* Keep track of the corruption of the last beacon/probe response. */
  88. u8 corrupt_data;
  89. /* Keep track of what bits of information we have valid info for. */
  90. u8 valid_data;
  91. };
  92. /**
  93. * enum ieee80211_corrupt_data_flags - BSS data corruption flags
  94. * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
  95. * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
  96. *
  97. * These are bss flags that are attached to a bss in the
  98. * @corrupt_data field of &struct ieee80211_bss.
  99. */
  100. enum ieee80211_bss_corrupt_data_flags {
  101. IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
  102. IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
  103. };
  104. /**
  105. * enum ieee80211_valid_data_flags - BSS valid data flags
  106. * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
  107. * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
  108. * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
  109. *
  110. * These are bss flags that are attached to a bss in the
  111. * @valid_data field of &struct ieee80211_bss. They show which parts
  112. * of the data structure were recieved as a result of an un-corrupted
  113. * beacon/probe response.
  114. */
  115. enum ieee80211_bss_valid_data_flags {
  116. IEEE80211_BSS_VALID_WMM = BIT(1),
  117. IEEE80211_BSS_VALID_RATES = BIT(2),
  118. IEEE80211_BSS_VALID_ERP = BIT(3)
  119. };
  120. typedef unsigned __bitwise__ ieee80211_tx_result;
  121. #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
  122. #define TX_DROP ((__force ieee80211_tx_result) 1u)
  123. #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
  124. #define IEEE80211_TX_UNICAST BIT(1)
  125. #define IEEE80211_TX_PS_BUFFERED BIT(2)
  126. struct ieee80211_tx_data {
  127. struct sk_buff *skb;
  128. struct sk_buff_head skbs;
  129. struct ieee80211_local *local;
  130. struct ieee80211_sub_if_data *sdata;
  131. struct sta_info *sta;
  132. struct ieee80211_key *key;
  133. struct ieee80211_tx_rate rate;
  134. unsigned int flags;
  135. };
  136. typedef unsigned __bitwise__ ieee80211_rx_result;
  137. #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
  138. #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
  139. #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
  140. #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
  141. /**
  142. * enum ieee80211_packet_rx_flags - packet RX flags
  143. * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
  144. * (incl. multicast frames)
  145. * @IEEE80211_RX_FRAGMENTED: fragmented frame
  146. * @IEEE80211_RX_AMSDU: a-MSDU packet
  147. * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
  148. * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
  149. *
  150. * These are per-frame flags that are attached to a frame in the
  151. * @rx_flags field of &struct ieee80211_rx_status.
  152. */
  153. enum ieee80211_packet_rx_flags {
  154. IEEE80211_RX_RA_MATCH = BIT(1),
  155. IEEE80211_RX_FRAGMENTED = BIT(2),
  156. IEEE80211_RX_AMSDU = BIT(3),
  157. IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
  158. IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
  159. };
  160. /**
  161. * enum ieee80211_rx_flags - RX data flags
  162. *
  163. * @IEEE80211_RX_CMNTR: received on cooked monitor already
  164. * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
  165. * to cfg80211_report_obss_beacon().
  166. *
  167. * These flags are used across handling multiple interfaces
  168. * for a single frame.
  169. */
  170. enum ieee80211_rx_flags {
  171. IEEE80211_RX_CMNTR = BIT(0),
  172. IEEE80211_RX_BEACON_REPORTED = BIT(1),
  173. };
  174. struct ieee80211_rx_data {
  175. struct sk_buff *skb;
  176. struct ieee80211_local *local;
  177. struct ieee80211_sub_if_data *sdata;
  178. struct sta_info *sta;
  179. struct ieee80211_key *key;
  180. unsigned int flags;
  181. /*
  182. * Index into sequence numbers array, 0..16
  183. * since the last (16) is used for non-QoS,
  184. * will be 16 on non-QoS frames.
  185. */
  186. int seqno_idx;
  187. /*
  188. * Index into the security IV/PN arrays, 0..16
  189. * since the last (16) is used for CCMP-encrypted
  190. * management frames, will be set to 16 on mgmt
  191. * frames and 0 on non-QoS frames.
  192. */
  193. int security_idx;
  194. u32 tkip_iv32;
  195. u16 tkip_iv16;
  196. };
  197. struct beacon_data {
  198. u8 *head, *tail;
  199. int head_len, tail_len;
  200. struct rcu_head rcu_head;
  201. };
  202. struct probe_resp {
  203. struct rcu_head rcu_head;
  204. int len;
  205. u8 data[0];
  206. };
  207. struct ps_data {
  208. /* yes, this looks ugly, but guarantees that we can later use
  209. * bitmap_empty :)
  210. * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
  211. u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
  212. struct sk_buff_head bc_buf;
  213. atomic_t num_sta_ps; /* number of stations in PS mode */
  214. int dtim_count;
  215. bool dtim_bc_mc;
  216. };
  217. struct ieee80211_if_ap {
  218. struct beacon_data __rcu *beacon;
  219. struct probe_resp __rcu *probe_resp;
  220. /* to be used after channel switch. */
  221. struct cfg80211_beacon_data *next_beacon;
  222. struct list_head vlans;
  223. struct ps_data ps;
  224. atomic_t num_mcast_sta; /* number of stations receiving multicast */
  225. };
  226. struct ieee80211_if_wds {
  227. struct sta_info *sta;
  228. u8 remote_addr[ETH_ALEN];
  229. };
  230. struct ieee80211_if_vlan {
  231. struct list_head list;
  232. /* used for all tx if the VLAN is configured to 4-addr mode */
  233. struct sta_info __rcu *sta;
  234. };
  235. struct mesh_stats {
  236. __u32 fwded_mcast; /* Mesh forwarded multicast frames */
  237. __u32 fwded_unicast; /* Mesh forwarded unicast frames */
  238. __u32 fwded_frames; /* Mesh total forwarded frames */
  239. __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
  240. __u32 dropped_frames_no_route; /* Not transmitted, no route found */
  241. __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
  242. };
  243. #define PREQ_Q_F_START 0x1
  244. #define PREQ_Q_F_REFRESH 0x2
  245. struct mesh_preq_queue {
  246. struct list_head list;
  247. u8 dst[ETH_ALEN];
  248. u8 flags;
  249. };
  250. #if HZ/100 == 0
  251. #define IEEE80211_ROC_MIN_LEFT 1
  252. #else
  253. #define IEEE80211_ROC_MIN_LEFT (HZ/100)
  254. #endif
  255. struct ieee80211_roc_work {
  256. struct list_head list;
  257. struct list_head dependents;
  258. struct delayed_work work;
  259. struct ieee80211_sub_if_data *sdata;
  260. struct ieee80211_channel *chan;
  261. bool started, abort, hw_begun, notified;
  262. bool to_be_freed;
  263. unsigned long hw_start_time;
  264. u32 duration, req_duration;
  265. struct sk_buff *frame;
  266. u64 cookie, mgmt_tx_cookie;
  267. enum ieee80211_roc_type type;
  268. };
  269. /* flags used in struct ieee80211_if_managed.flags */
  270. enum ieee80211_sta_flags {
  271. IEEE80211_STA_BEACON_POLL = BIT(0),
  272. IEEE80211_STA_CONNECTION_POLL = BIT(1),
  273. IEEE80211_STA_CONTROL_PORT = BIT(2),
  274. IEEE80211_STA_DISABLE_HT = BIT(4),
  275. IEEE80211_STA_CSA_RECEIVED = BIT(5),
  276. IEEE80211_STA_MFP_ENABLED = BIT(6),
  277. IEEE80211_STA_UAPSD_ENABLED = BIT(7),
  278. IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
  279. IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
  280. IEEE80211_STA_DISABLE_40MHZ = BIT(10),
  281. IEEE80211_STA_DISABLE_VHT = BIT(11),
  282. IEEE80211_STA_DISABLE_80P80MHZ = BIT(12),
  283. IEEE80211_STA_DISABLE_160MHZ = BIT(13),
  284. };
  285. struct ieee80211_mgd_auth_data {
  286. struct cfg80211_bss *bss;
  287. unsigned long timeout;
  288. int tries;
  289. u16 algorithm, expected_transaction;
  290. u8 key[WLAN_KEY_LEN_WEP104];
  291. u8 key_len, key_idx;
  292. bool done;
  293. bool timeout_started;
  294. u16 sae_trans, sae_status;
  295. size_t data_len;
  296. u8 data[];
  297. };
  298. struct ieee80211_mgd_assoc_data {
  299. struct cfg80211_bss *bss;
  300. const u8 *supp_rates;
  301. unsigned long timeout;
  302. int tries;
  303. u16 capability;
  304. u8 prev_bssid[ETH_ALEN];
  305. u8 ssid[IEEE80211_MAX_SSID_LEN];
  306. u8 ssid_len;
  307. u8 supp_rates_len;
  308. bool wmm, uapsd;
  309. bool need_beacon;
  310. bool synced;
  311. bool timeout_started;
  312. u8 ap_ht_param;
  313. struct ieee80211_vht_cap ap_vht_cap;
  314. size_t ie_len;
  315. u8 ie[];
  316. };
  317. struct ieee80211_if_managed {
  318. struct timer_list timer;
  319. struct timer_list conn_mon_timer;
  320. struct timer_list bcn_mon_timer;
  321. struct timer_list chswitch_timer;
  322. struct work_struct monitor_work;
  323. struct work_struct chswitch_work;
  324. struct work_struct beacon_connection_loss_work;
  325. struct work_struct csa_connection_drop_work;
  326. unsigned long beacon_timeout;
  327. unsigned long probe_timeout;
  328. int probe_send_count;
  329. bool nullfunc_failed;
  330. bool connection_loss;
  331. struct cfg80211_bss *associated;
  332. struct ieee80211_mgd_auth_data *auth_data;
  333. struct ieee80211_mgd_assoc_data *assoc_data;
  334. u8 bssid[ETH_ALEN];
  335. u16 aid;
  336. bool powersave; /* powersave requested for this iface */
  337. bool broken_ap; /* AP is broken -- turn off powersave */
  338. bool have_beacon;
  339. u8 dtim_period;
  340. enum ieee80211_smps_mode req_smps, /* requested smps mode */
  341. driver_smps_mode; /* smps mode request */
  342. struct work_struct request_smps_work;
  343. unsigned int flags;
  344. bool beacon_crc_valid;
  345. u32 beacon_crc;
  346. bool status_acked;
  347. bool status_received;
  348. __le16 status_fc;
  349. enum {
  350. IEEE80211_MFP_DISABLED,
  351. IEEE80211_MFP_OPTIONAL,
  352. IEEE80211_MFP_REQUIRED
  353. } mfp; /* management frame protection */
  354. /*
  355. * Bitmask of enabled u-apsd queues,
  356. * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
  357. * to take effect.
  358. */
  359. unsigned int uapsd_queues;
  360. /*
  361. * Maximum number of buffered frames AP can deliver during a
  362. * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
  363. * Needs a new association to take effect.
  364. */
  365. unsigned int uapsd_max_sp_len;
  366. int wmm_last_param_set;
  367. u8 use_4addr;
  368. s16 p2p_noa_index;
  369. /* Signal strength from the last Beacon frame in the current BSS. */
  370. int last_beacon_signal;
  371. /*
  372. * Weighted average of the signal strength from Beacon frames in the
  373. * current BSS. This is in units of 1/16 of the signal unit to maintain
  374. * accuracy and to speed up calculations, i.e., the value need to be
  375. * divided by 16 to get the actual value.
  376. */
  377. int ave_beacon_signal;
  378. /*
  379. * Number of Beacon frames used in ave_beacon_signal. This can be used
  380. * to avoid generating less reliable cqm events that would be based
  381. * only on couple of received frames.
  382. */
  383. unsigned int count_beacon_signal;
  384. /*
  385. * Last Beacon frame signal strength average (ave_beacon_signal / 16)
  386. * that triggered a cqm event. 0 indicates that no event has been
  387. * generated for the current association.
  388. */
  389. int last_cqm_event_signal;
  390. /*
  391. * State variables for keeping track of RSSI of the AP currently
  392. * connected to and informing driver when RSSI has gone
  393. * below/above a certain threshold.
  394. */
  395. int rssi_min_thold, rssi_max_thold;
  396. int last_ave_beacon_signal;
  397. struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
  398. struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
  399. struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
  400. struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
  401. };
  402. struct ieee80211_if_ibss {
  403. struct timer_list timer;
  404. unsigned long last_scan_completed;
  405. u32 basic_rates;
  406. bool fixed_bssid;
  407. bool fixed_channel;
  408. bool privacy;
  409. bool control_port;
  410. u8 bssid[ETH_ALEN] __aligned(2);
  411. u8 ssid[IEEE80211_MAX_SSID_LEN];
  412. u8 ssid_len, ie_len;
  413. u8 *ie;
  414. struct cfg80211_chan_def chandef;
  415. unsigned long ibss_join_req;
  416. /* probe response/beacon for IBSS */
  417. struct beacon_data __rcu *presp;
  418. struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
  419. struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
  420. spinlock_t incomplete_lock;
  421. struct list_head incomplete_stations;
  422. enum {
  423. IEEE80211_IBSS_MLME_SEARCH,
  424. IEEE80211_IBSS_MLME_JOINED,
  425. } state;
  426. };
  427. /**
  428. * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
  429. *
  430. * these declarations define the interface, which enables
  431. * vendor-specific mesh synchronization
  432. *
  433. */
  434. struct ieee802_11_elems;
  435. struct ieee80211_mesh_sync_ops {
  436. void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
  437. u16 stype,
  438. struct ieee80211_mgmt *mgmt,
  439. struct ieee802_11_elems *elems,
  440. struct ieee80211_rx_status *rx_status);
  441. void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
  442. /* add other framework functions here */
  443. };
  444. struct ieee80211_if_mesh {
  445. struct timer_list housekeeping_timer;
  446. struct timer_list mesh_path_timer;
  447. struct timer_list mesh_path_root_timer;
  448. unsigned long wrkq_flags;
  449. unsigned long mbss_changed;
  450. u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
  451. size_t mesh_id_len;
  452. /* Active Path Selection Protocol Identifier */
  453. u8 mesh_pp_id;
  454. /* Active Path Selection Metric Identifier */
  455. u8 mesh_pm_id;
  456. /* Congestion Control Mode Identifier */
  457. u8 mesh_cc_id;
  458. /* Synchronization Protocol Identifier */
  459. u8 mesh_sp_id;
  460. /* Authentication Protocol Identifier */
  461. u8 mesh_auth_id;
  462. /* Local mesh Sequence Number */
  463. u32 sn;
  464. /* Last used PREQ ID */
  465. u32 preq_id;
  466. atomic_t mpaths;
  467. /* Timestamp of last SN update */
  468. unsigned long last_sn_update;
  469. /* Time when it's ok to send next PERR */
  470. unsigned long next_perr;
  471. /* Timestamp of last PREQ sent */
  472. unsigned long last_preq;
  473. struct mesh_rmc *rmc;
  474. spinlock_t mesh_preq_queue_lock;
  475. struct mesh_preq_queue preq_queue;
  476. int preq_queue_len;
  477. struct mesh_stats mshstats;
  478. struct mesh_config mshcfg;
  479. atomic_t estab_plinks;
  480. u32 mesh_seqnum;
  481. bool accepting_plinks;
  482. int num_gates;
  483. struct beacon_data __rcu *beacon;
  484. const u8 *ie;
  485. u8 ie_len;
  486. enum {
  487. IEEE80211_MESH_SEC_NONE = 0x0,
  488. IEEE80211_MESH_SEC_AUTHED = 0x1,
  489. IEEE80211_MESH_SEC_SECURED = 0x2,
  490. } security;
  491. bool user_mpm;
  492. /* Extensible Synchronization Framework */
  493. const struct ieee80211_mesh_sync_ops *sync_ops;
  494. s64 sync_offset_clockdrift_max;
  495. spinlock_t sync_offset_lock;
  496. bool adjusting_tbtt;
  497. /* mesh power save */
  498. enum nl80211_mesh_power_mode nonpeer_pm;
  499. int ps_peers_light_sleep;
  500. int ps_peers_deep_sleep;
  501. struct ps_data ps;
  502. };
  503. #ifdef CONFIG_MAC80211_MESH
  504. #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
  505. do { (msh)->mshstats.name++; } while (0)
  506. #else
  507. #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
  508. do { } while (0)
  509. #endif
  510. /**
  511. * enum ieee80211_sub_if_data_flags - virtual interface flags
  512. *
  513. * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
  514. * @IEEE80211_SDATA_PROMISC: interface is promisc
  515. * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
  516. * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
  517. * associated stations and deliver multicast frames both
  518. * back to wireless media and to the local net stack.
  519. * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
  520. * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
  521. */
  522. enum ieee80211_sub_if_data_flags {
  523. IEEE80211_SDATA_ALLMULTI = BIT(0),
  524. IEEE80211_SDATA_PROMISC = BIT(1),
  525. IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
  526. IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
  527. IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
  528. IEEE80211_SDATA_IN_DRIVER = BIT(5),
  529. };
  530. /**
  531. * enum ieee80211_sdata_state_bits - virtual interface state bits
  532. * @SDATA_STATE_RUNNING: virtual interface is up & running; this
  533. * mirrors netif_running() but is separate for interface type
  534. * change handling while the interface is up
  535. * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
  536. * mode, so queues are stopped
  537. * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
  538. * to offchannel, reset when offchannel returns
  539. */
  540. enum ieee80211_sdata_state_bits {
  541. SDATA_STATE_RUNNING,
  542. SDATA_STATE_OFFCHANNEL,
  543. SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
  544. };
  545. /**
  546. * enum ieee80211_chanctx_mode - channel context configuration mode
  547. *
  548. * @IEEE80211_CHANCTX_SHARED: channel context may be used by
  549. * multiple interfaces
  550. * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
  551. * only by a single interface. This can be used for example for
  552. * non-fixed channel IBSS.
  553. */
  554. enum ieee80211_chanctx_mode {
  555. IEEE80211_CHANCTX_SHARED,
  556. IEEE80211_CHANCTX_EXCLUSIVE
  557. };
  558. struct ieee80211_chanctx {
  559. struct list_head list;
  560. struct rcu_head rcu_head;
  561. enum ieee80211_chanctx_mode mode;
  562. int refcount;
  563. bool driver_present;
  564. struct ieee80211_chanctx_conf conf;
  565. };
  566. struct ieee80211_sub_if_data {
  567. struct list_head list;
  568. struct wireless_dev wdev;
  569. /* keys */
  570. struct list_head key_list;
  571. /* count for keys needing tailroom space allocation */
  572. int crypto_tx_tailroom_needed_cnt;
  573. int crypto_tx_tailroom_pending_dec;
  574. struct delayed_work dec_tailroom_needed_wk;
  575. struct net_device *dev;
  576. struct ieee80211_local *local;
  577. unsigned int flags;
  578. unsigned long state;
  579. int drop_unencrypted;
  580. char name[IFNAMSIZ];
  581. /* Fragment table for host-based reassembly */
  582. struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
  583. unsigned int fragment_next;
  584. /* TID bitmap for NoAck policy */
  585. u16 noack_map;
  586. /* bit field of ACM bits (BIT(802.1D tag)) */
  587. u8 wmm_acm;
  588. struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
  589. struct ieee80211_key __rcu *default_unicast_key;
  590. struct ieee80211_key __rcu *default_multicast_key;
  591. struct ieee80211_key __rcu *default_mgmt_key;
  592. u16 sequence_number;
  593. __be16 control_port_protocol;
  594. bool control_port_no_encrypt;
  595. struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
  596. struct work_struct csa_finalize_work;
  597. int csa_counter_offset_beacon;
  598. int csa_counter_offset_presp;
  599. bool csa_radar_required;
  600. /* used to reconfigure hardware SM PS */
  601. struct work_struct recalc_smps;
  602. struct work_struct work;
  603. struct sk_buff_head skb_queue;
  604. u8 needed_rx_chains;
  605. enum ieee80211_smps_mode smps_mode;
  606. int user_power_level; /* in dBm */
  607. int ap_power_level; /* in dBm */
  608. bool radar_required;
  609. struct delayed_work dfs_cac_timer_work;
  610. /*
  611. * AP this belongs to: self in AP mode and
  612. * corresponding AP in VLAN mode, NULL for
  613. * all others (might be needed later in IBSS)
  614. */
  615. struct ieee80211_if_ap *bss;
  616. /* bitmap of allowed (non-MCS) rate indexes for rate control */
  617. u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
  618. bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
  619. u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
  620. union {
  621. struct ieee80211_if_ap ap;
  622. struct ieee80211_if_wds wds;
  623. struct ieee80211_if_vlan vlan;
  624. struct ieee80211_if_managed mgd;
  625. struct ieee80211_if_ibss ibss;
  626. struct ieee80211_if_mesh mesh;
  627. u32 mntr_flags;
  628. } u;
  629. spinlock_t cleanup_stations_lock;
  630. struct list_head cleanup_stations;
  631. struct work_struct cleanup_stations_wk;
  632. #ifdef CONFIG_MAC80211_DEBUGFS
  633. struct {
  634. struct dentry *subdir_stations;
  635. struct dentry *default_unicast_key;
  636. struct dentry *default_multicast_key;
  637. struct dentry *default_mgmt_key;
  638. } debugfs;
  639. #endif
  640. /* must be last, dynamically sized area in this! */
  641. struct ieee80211_vif vif;
  642. };
  643. static inline
  644. struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
  645. {
  646. return container_of(p, struct ieee80211_sub_if_data, vif);
  647. }
  648. static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
  649. __acquires(&sdata->wdev.mtx)
  650. {
  651. mutex_lock(&sdata->wdev.mtx);
  652. __acquire(&sdata->wdev.mtx);
  653. }
  654. static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
  655. __releases(&sdata->wdev.mtx)
  656. {
  657. mutex_unlock(&sdata->wdev.mtx);
  658. __release(&sdata->wdev.mtx);
  659. }
  660. static inline void
  661. sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
  662. {
  663. lockdep_assert_held(&sdata->wdev.mtx);
  664. }
  665. static inline enum ieee80211_band
  666. ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
  667. {
  668. enum ieee80211_band band = IEEE80211_BAND_2GHZ;
  669. struct ieee80211_chanctx_conf *chanctx_conf;
  670. rcu_read_lock();
  671. chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
  672. if (!WARN_ON(!chanctx_conf))
  673. band = chanctx_conf->def.chan->band;
  674. rcu_read_unlock();
  675. return band;
  676. }
  677. static inline int
  678. ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
  679. {
  680. switch (chandef->width) {
  681. case NL80211_CHAN_WIDTH_5:
  682. return 2;
  683. case NL80211_CHAN_WIDTH_10:
  684. return 1;
  685. default:
  686. return 0;
  687. }
  688. }
  689. static inline int
  690. ieee80211_vif_get_shift(struct ieee80211_vif *vif)
  691. {
  692. struct ieee80211_chanctx_conf *chanctx_conf;
  693. int shift = 0;
  694. rcu_read_lock();
  695. chanctx_conf = rcu_dereference(vif->chanctx_conf);
  696. if (chanctx_conf)
  697. shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
  698. rcu_read_unlock();
  699. return shift;
  700. }
  701. enum sdata_queue_type {
  702. IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
  703. IEEE80211_SDATA_QUEUE_AGG_START = 1,
  704. IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
  705. };
  706. enum {
  707. IEEE80211_RX_MSG = 1,
  708. IEEE80211_TX_STATUS_MSG = 2,
  709. };
  710. enum queue_stop_reason {
  711. IEEE80211_QUEUE_STOP_REASON_DRIVER,
  712. IEEE80211_QUEUE_STOP_REASON_PS,
  713. IEEE80211_QUEUE_STOP_REASON_CSA,
  714. IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
  715. IEEE80211_QUEUE_STOP_REASON_SUSPEND,
  716. IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
  717. IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
  718. IEEE80211_QUEUE_STOP_REASON_FLUSH,
  719. };
  720. #ifdef CONFIG_MAC80211_LEDS
  721. struct tpt_led_trigger {
  722. struct led_trigger trig;
  723. char name[32];
  724. const struct ieee80211_tpt_blink *blink_table;
  725. unsigned int blink_table_len;
  726. struct timer_list timer;
  727. unsigned long prev_traffic;
  728. unsigned long tx_bytes, rx_bytes;
  729. unsigned int active, want;
  730. bool running;
  731. };
  732. #endif
  733. /**
  734. * mac80211 scan flags - currently active scan mode
  735. *
  736. * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
  737. * well be on the operating channel
  738. * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
  739. * determine if we are on the operating channel or not
  740. * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
  741. * channel. This should not interrupt normal traffic.
  742. * @SCAN_COMPLETED: Set for our scan work function when the driver reported
  743. * that the scan completed.
  744. * @SCAN_ABORTED: Set for our scan work function when the driver reported
  745. * a scan complete for an aborted scan.
  746. */
  747. enum {
  748. SCAN_SW_SCANNING,
  749. SCAN_HW_SCANNING,
  750. SCAN_ONCHANNEL_SCANNING,
  751. SCAN_COMPLETED,
  752. SCAN_ABORTED,
  753. };
  754. /**
  755. * enum mac80211_scan_state - scan state machine states
  756. *
  757. * @SCAN_DECISION: Main entry point to the scan state machine, this state
  758. * determines if we should keep on scanning or switch back to the
  759. * operating channel
  760. * @SCAN_SET_CHANNEL: Set the next channel to be scanned
  761. * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
  762. * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
  763. * send out data
  764. * @SCAN_RESUME: Resume the scan and scan the next channel
  765. * @SCAN_ABORT: Abort the scan and go back to operating channel
  766. */
  767. enum mac80211_scan_state {
  768. SCAN_DECISION,
  769. SCAN_SET_CHANNEL,
  770. SCAN_SEND_PROBE,
  771. SCAN_SUSPEND,
  772. SCAN_RESUME,
  773. SCAN_ABORT,
  774. };
  775. struct ieee80211_local {
  776. /* embed the driver visible part.
  777. * don't cast (use the static inlines below), but we keep
  778. * it first anyway so they become a no-op */
  779. struct ieee80211_hw hw;
  780. const struct ieee80211_ops *ops;
  781. /*
  782. * private workqueue to mac80211. mac80211 makes this accessible
  783. * via ieee80211_queue_work()
  784. */
  785. struct workqueue_struct *workqueue;
  786. unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
  787. /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
  788. spinlock_t queue_stop_reason_lock;
  789. int open_count;
  790. int monitors, cooked_mntrs;
  791. /* number of interfaces with corresponding FIF_ flags */
  792. int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
  793. fif_probe_req;
  794. int probe_req_reg;
  795. unsigned int filter_flags; /* FIF_* */
  796. bool wiphy_ciphers_allocated;
  797. bool use_chanctx;
  798. /* protects the aggregated multicast list and filter calls */
  799. spinlock_t filter_lock;
  800. /* used for uploading changed mc list */
  801. struct work_struct reconfig_filter;
  802. /* aggregated multicast list */
  803. struct netdev_hw_addr_list mc_list;
  804. bool tim_in_locked_section; /* see ieee80211_beacon_get() */
  805. /*
  806. * suspended is true if we finished all the suspend _and_ we have
  807. * not yet come up from resume. This is to be used by mac80211
  808. * to ensure driver sanity during suspend and mac80211's own
  809. * sanity. It can eventually be used for WoW as well.
  810. */
  811. bool suspended;
  812. /*
  813. * Resuming is true while suspended, but when we're reprogramming the
  814. * hardware -- at that time it's allowed to use ieee80211_queue_work()
  815. * again even though some other parts of the stack are still suspended
  816. * and we still drop received frames to avoid waking the stack.
  817. */
  818. bool resuming;
  819. /*
  820. * quiescing is true during the suspend process _only_ to
  821. * ease timer cancelling etc.
  822. */
  823. bool quiescing;
  824. /* device is started */
  825. bool started;
  826. /* device is during a HW reconfig */
  827. bool in_reconfig;
  828. /* wowlan is enabled -- don't reconfig on resume */
  829. bool wowlan;
  830. /* DFS/radar detection is enabled */
  831. bool radar_detect_enabled;
  832. struct work_struct radar_detected_work;
  833. /* number of RX chains the hardware has */
  834. u8 rx_chains;
  835. int tx_headroom; /* required headroom for hardware/radiotap */
  836. /* Tasklet and skb queue to process calls from IRQ mode. All frames
  837. * added to skb_queue will be processed, but frames in
  838. * skb_queue_unreliable may be dropped if the total length of these
  839. * queues increases over the limit. */
  840. #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
  841. struct tasklet_struct tasklet;
  842. struct sk_buff_head skb_queue;
  843. struct sk_buff_head skb_queue_unreliable;
  844. spinlock_t rx_path_lock;
  845. /* Station data */
  846. /*
  847. * The mutex only protects the list, hash table and
  848. * counter, reads are done with RCU.
  849. */
  850. struct mutex sta_mtx;
  851. spinlock_t tim_lock;
  852. unsigned long num_sta;
  853. struct list_head sta_list;
  854. struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
  855. struct timer_list sta_cleanup;
  856. int sta_generation;
  857. struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
  858. struct tasklet_struct tx_pending_tasklet;
  859. atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
  860. /* number of interfaces with corresponding IFF_ flags */
  861. atomic_t iff_allmultis, iff_promiscs;
  862. struct rate_control_ref *rate_ctrl;
  863. struct crypto_cipher *wep_tx_tfm;
  864. struct crypto_cipher *wep_rx_tfm;
  865. u32 wep_iv;
  866. /* see iface.c */
  867. struct list_head interfaces;
  868. struct mutex iflist_mtx;
  869. /*
  870. * Key mutex, protects sdata's key_list and sta_info's
  871. * key pointers (write access, they're RCU.)
  872. */
  873. struct mutex key_mtx;
  874. /* mutex for scan and work locking */
  875. struct mutex mtx;
  876. /* Scanning and BSS list */
  877. unsigned long scanning;
  878. struct cfg80211_ssid scan_ssid;
  879. struct cfg80211_scan_request *int_scan_req;
  880. struct cfg80211_scan_request *scan_req, *hw_scan_req;
  881. struct cfg80211_chan_def scan_chandef;
  882. enum ieee80211_band hw_scan_band;
  883. int scan_channel_idx;
  884. int scan_ies_len;
  885. int hw_scan_ies_bufsize;
  886. struct work_struct sched_scan_stopped_work;
  887. struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
  888. unsigned long leave_oper_channel_time;
  889. enum mac80211_scan_state next_scan_state;
  890. struct delayed_work scan_work;
  891. struct ieee80211_sub_if_data __rcu *scan_sdata;
  892. struct cfg80211_chan_def csa_chandef;
  893. /* For backward compatibility only -- do not use */
  894. struct cfg80211_chan_def _oper_chandef;
  895. /* Temporary remain-on-channel for off-channel operations */
  896. struct ieee80211_channel *tmp_channel;
  897. /* channel contexts */
  898. struct list_head chanctx_list;
  899. struct mutex chanctx_mtx;
  900. /* SNMP counters */
  901. /* dot11CountersTable */
  902. u32 dot11TransmittedFragmentCount;
  903. u32 dot11MulticastTransmittedFrameCount;
  904. u32 dot11FailedCount;
  905. u32 dot11RetryCount;
  906. u32 dot11MultipleRetryCount;
  907. u32 dot11FrameDuplicateCount;
  908. u32 dot11ReceivedFragmentCount;
  909. u32 dot11MulticastReceivedFrameCount;
  910. u32 dot11TransmittedFrameCount;
  911. #ifdef CONFIG_MAC80211_LEDS
  912. struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
  913. struct tpt_led_trigger *tpt_led_trigger;
  914. char tx_led_name[32], rx_led_name[32],
  915. assoc_led_name[32], radio_led_name[32];
  916. #endif
  917. #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
  918. /* TX/RX handler statistics */
  919. unsigned int tx_handlers_drop;
  920. unsigned int tx_handlers_queued;
  921. unsigned int tx_handlers_drop_unencrypted;
  922. unsigned int tx_handlers_drop_fragment;
  923. unsigned int tx_handlers_drop_wep;
  924. unsigned int tx_handlers_drop_not_assoc;
  925. unsigned int tx_handlers_drop_unauth_port;
  926. unsigned int rx_handlers_drop;
  927. unsigned int rx_handlers_queued;
  928. unsigned int rx_handlers_drop_nullfunc;
  929. unsigned int rx_handlers_drop_defrag;
  930. unsigned int rx_handlers_drop_short;
  931. unsigned int tx_expand_skb_head;
  932. unsigned int tx_expand_skb_head_cloned;
  933. unsigned int rx_expand_skb_head;
  934. unsigned int rx_expand_skb_head2;
  935. unsigned int rx_handlers_fragments;
  936. unsigned int tx_status_drop;
  937. #define I802_DEBUG_INC(c) (c)++
  938. #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
  939. #define I802_DEBUG_INC(c) do { } while (0)
  940. #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
  941. int total_ps_buffered; /* total number of all buffered unicast and
  942. * multicast packets for power saving stations
  943. */
  944. bool pspolling;
  945. bool offchannel_ps_enabled;
  946. /*
  947. * PS can only be enabled when we have exactly one managed
  948. * interface (and monitors) in PS, this then points there.
  949. */
  950. struct ieee80211_sub_if_data *ps_sdata;
  951. struct work_struct dynamic_ps_enable_work;
  952. struct work_struct dynamic_ps_disable_work;
  953. struct timer_list dynamic_ps_timer;
  954. struct notifier_block network_latency_notifier;
  955. struct notifier_block ifa_notifier;
  956. struct notifier_block ifa6_notifier;
  957. /*
  958. * The dynamic ps timeout configured from user space via WEXT -
  959. * this will override whatever chosen by mac80211 internally.
  960. */
  961. int dynamic_ps_forced_timeout;
  962. int user_power_level; /* in dBm, for all interfaces */
  963. enum ieee80211_smps_mode smps_mode;
  964. struct work_struct restart_work;
  965. #ifdef CONFIG_MAC80211_DEBUGFS
  966. struct local_debugfsdentries {
  967. struct dentry *rcdir;
  968. struct dentry *keys;
  969. } debugfs;
  970. #endif
  971. /*
  972. * Remain-on-channel support
  973. */
  974. struct list_head roc_list;
  975. struct work_struct hw_roc_start, hw_roc_done;
  976. unsigned long hw_roc_start_time;
  977. u64 roc_cookie_counter;
  978. struct idr ack_status_frames;
  979. spinlock_t ack_status_lock;
  980. struct ieee80211_sub_if_data __rcu *p2p_sdata;
  981. /* virtual monitor interface */
  982. struct ieee80211_sub_if_data __rcu *monitor_sdata;
  983. struct cfg80211_chan_def monitor_chandef;
  984. };
  985. static inline struct ieee80211_sub_if_data *
  986. IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
  987. {
  988. return netdev_priv(dev);
  989. }
  990. static inline struct ieee80211_sub_if_data *
  991. IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
  992. {
  993. return container_of(wdev, struct ieee80211_sub_if_data, wdev);
  994. }
  995. /* this struct represents 802.11n's RA/TID combination */
  996. struct ieee80211_ra_tid {
  997. u8 ra[ETH_ALEN];
  998. u16 tid;
  999. };
  1000. /* Parsed Information Elements */
  1001. struct ieee802_11_elems {
  1002. const u8 *ie_start;
  1003. size_t total_len;
  1004. /* pointers to IEs */
  1005. const u8 *ssid;
  1006. const u8 *supp_rates;
  1007. const u8 *ds_params;
  1008. const struct ieee80211_tim_ie *tim;
  1009. const u8 *challenge;
  1010. const u8 *rsn;
  1011. const u8 *erp_info;
  1012. const u8 *ext_supp_rates;
  1013. const u8 *wmm_info;
  1014. const u8 *wmm_param;
  1015. const struct ieee80211_ht_cap *ht_cap_elem;
  1016. const struct ieee80211_ht_operation *ht_operation;
  1017. const struct ieee80211_vht_cap *vht_cap_elem;
  1018. const struct ieee80211_vht_operation *vht_operation;
  1019. const struct ieee80211_meshconf_ie *mesh_config;
  1020. const u8 *mesh_id;
  1021. const u8 *peering;
  1022. const __le16 *awake_window;
  1023. const u8 *preq;
  1024. const u8 *prep;
  1025. const u8 *perr;
  1026. const struct ieee80211_rann_ie *rann;
  1027. const struct ieee80211_channel_sw_ie *ch_switch_ie;
  1028. const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
  1029. const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
  1030. const u8 *country_elem;
  1031. const u8 *pwr_constr_elem;
  1032. const struct ieee80211_timeout_interval_ie *timeout_int;
  1033. const u8 *opmode_notif;
  1034. const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
  1035. /* length of them, respectively */
  1036. u8 ssid_len;
  1037. u8 supp_rates_len;
  1038. u8 tim_len;
  1039. u8 challenge_len;
  1040. u8 rsn_len;
  1041. u8 ext_supp_rates_len;
  1042. u8 wmm_info_len;
  1043. u8 wmm_param_len;
  1044. u8 mesh_id_len;
  1045. u8 peering_len;
  1046. u8 preq_len;
  1047. u8 prep_len;
  1048. u8 perr_len;
  1049. u8 country_elem_len;
  1050. /* whether a parse error occurred while retrieving these elements */
  1051. bool parse_error;
  1052. };
  1053. static inline struct ieee80211_local *hw_to_local(
  1054. struct ieee80211_hw *hw)
  1055. {
  1056. return container_of(hw, struct ieee80211_local, hw);
  1057. }
  1058. static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
  1059. {
  1060. return ether_addr_equal(raddr, addr) ||
  1061. is_broadcast_ether_addr(raddr);
  1062. }
  1063. static inline bool
  1064. ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
  1065. {
  1066. WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
  1067. status->flag & RX_FLAG_MACTIME_END);
  1068. return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
  1069. }
  1070. u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
  1071. struct ieee80211_rx_status *status,
  1072. unsigned int mpdu_len,
  1073. unsigned int mpdu_offset);
  1074. int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
  1075. void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
  1076. void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
  1077. u32 changed);
  1078. void ieee80211_configure_filter(struct ieee80211_local *local);
  1079. u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
  1080. /* STA code */
  1081. void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
  1082. int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
  1083. struct cfg80211_auth_request *req);
  1084. int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
  1085. struct cfg80211_assoc_request *req);
  1086. int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
  1087. struct cfg80211_deauth_request *req);
  1088. int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
  1089. struct cfg80211_disassoc_request *req);
  1090. void ieee80211_send_pspoll(struct ieee80211_local *local,
  1091. struct ieee80211_sub_if_data *sdata);
  1092. void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
  1093. void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
  1094. int ieee80211_max_network_latency(struct notifier_block *nb,
  1095. unsigned long data, void *dummy);
  1096. int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
  1097. void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
  1098. void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
  1099. struct sk_buff *skb);
  1100. void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
  1101. void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
  1102. void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
  1103. void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
  1104. __le16 fc, bool acked);
  1105. void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
  1106. /* IBSS code */
  1107. void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
  1108. void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
  1109. void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
  1110. const u8 *bssid, const u8 *addr, u32 supp_rates);
  1111. int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
  1112. struct cfg80211_ibss_params *params);
  1113. int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
  1114. void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
  1115. void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
  1116. struct sk_buff *skb);
  1117. /* mesh code */
  1118. void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
  1119. void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
  1120. struct sk_buff *skb);
  1121. /* scan/BSS handling */
  1122. void ieee80211_scan_work(struct work_struct *work);
  1123. int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
  1124. const u8 *ssid, u8 ssid_len,
  1125. struct ieee80211_channel *chan,
  1126. enum nl80211_bss_scan_width scan_width);
  1127. int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
  1128. struct cfg80211_scan_request *req);
  1129. void ieee80211_scan_cancel(struct ieee80211_local *local);
  1130. void ieee80211_run_deferred_scan(struct ieee80211_local *local);
  1131. void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
  1132. void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
  1133. struct ieee80211_bss *
  1134. ieee80211_bss_info_update(struct ieee80211_local *local,
  1135. struct ieee80211_rx_status *rx_status,
  1136. struct ieee80211_mgmt *mgmt,
  1137. size_t len,
  1138. struct ieee802_11_elems *elems,
  1139. struct ieee80211_channel *channel);
  1140. void ieee80211_rx_bss_put(struct ieee80211_local *local,
  1141. struct ieee80211_bss *bss);
  1142. /* scheduled scan handling */
  1143. int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
  1144. struct cfg80211_sched_scan_request *req);
  1145. int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
  1146. void ieee80211_sched_scan_stopped_work(struct work_struct *work);
  1147. /* off-channel helpers */
  1148. void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
  1149. void ieee80211_offchannel_return(struct ieee80211_local *local);
  1150. void ieee80211_roc_setup(struct ieee80211_local *local);
  1151. void ieee80211_start_next_roc(struct ieee80211_local *local);
  1152. void ieee80211_roc_purge(struct ieee80211_local *local,
  1153. struct ieee80211_sub_if_data *sdata);
  1154. void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
  1155. void ieee80211_sw_roc_work(struct work_struct *work);
  1156. void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
  1157. /* channel switch handling */
  1158. void ieee80211_csa_finalize_work(struct work_struct *work);
  1159. /* interface handling */
  1160. int ieee80211_iface_init(void);
  1161. void ieee80211_iface_exit(void);
  1162. int ieee80211_if_add(struct ieee80211_local *local, const char *name,
  1163. struct wireless_dev **new_wdev, enum nl80211_iftype type,
  1164. struct vif_params *params);
  1165. int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
  1166. enum nl80211_iftype type);
  1167. void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
  1168. void ieee80211_remove_interfaces(struct ieee80211_local *local);
  1169. u32 ieee80211_idle_off(struct ieee80211_local *local);
  1170. void ieee80211_recalc_idle(struct ieee80211_local *local);
  1171. void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
  1172. const int offset);
  1173. int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
  1174. void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
  1175. int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
  1176. void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
  1177. bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
  1178. void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
  1179. int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
  1180. struct cfg80211_beacon_data *params);
  1181. static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
  1182. {
  1183. return test_bit(SDATA_STATE_RUNNING, &sdata->state);
  1184. }
  1185. /* tx handling */
  1186. void ieee80211_clear_tx_pending(struct ieee80211_local *local);
  1187. void ieee80211_tx_pending(unsigned long data);
  1188. netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
  1189. struct net_device *dev);
  1190. netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
  1191. struct net_device *dev);
  1192. void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
  1193. struct sk_buff_head *skbs);
  1194. /* HT */
  1195. void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
  1196. struct ieee80211_sta_ht_cap *ht_cap);
  1197. bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
  1198. struct ieee80211_supported_band *sband,
  1199. const struct ieee80211_ht_cap *ht_cap_ie,
  1200. struct sta_info *sta);
  1201. void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
  1202. const u8 *da, u16 tid,
  1203. u16 initiator, u16 reason_code);
  1204. int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
  1205. enum ieee80211_smps_mode smps, const u8 *da,
  1206. const u8 *bssid);
  1207. void ieee80211_request_smps_work(struct work_struct *work);
  1208. void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
  1209. u16 initiator, u16 reason, bool stop);
  1210. void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
  1211. u16 initiator, u16 reason, bool stop);
  1212. void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
  1213. enum ieee80211_agg_stop_reason reason);
  1214. void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
  1215. struct sta_info *sta,
  1216. struct ieee80211_mgmt *mgmt, size_t len);
  1217. void ieee80211_process_addba_resp(struct ieee80211_local *local,
  1218. struct sta_info *sta,
  1219. struct ieee80211_mgmt *mgmt,
  1220. size_t len);
  1221. void ieee80211_process_addba_request(struct ieee80211_local *local,
  1222. struct sta_info *sta,
  1223. struct ieee80211_mgmt *mgmt,
  1224. size_t len);
  1225. int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
  1226. enum ieee80211_agg_stop_reason reason);
  1227. int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
  1228. enum ieee80211_agg_stop_reason reason);
  1229. void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
  1230. void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
  1231. void ieee80211_ba_session_work(struct work_struct *work);
  1232. void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
  1233. void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
  1234. u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
  1235. /* VHT */
  1236. void
  1237. ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
  1238. struct ieee80211_supported_band *sband,
  1239. const struct ieee80211_vht_cap *vht_cap_ie,
  1240. struct sta_info *sta);
  1241. enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
  1242. void ieee80211_sta_set_rx_nss(struct sta_info *sta);
  1243. void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
  1244. struct sta_info *sta, u8 opmode,
  1245. enum ieee80211_band band, bool nss_only);
  1246. void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
  1247. struct ieee80211_sta_vht_cap *vht_cap);
  1248. /* Spectrum management */
  1249. void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
  1250. struct ieee80211_mgmt *mgmt,
  1251. size_t len);
  1252. /* Suspend/resume and hw reconfiguration */
  1253. int ieee80211_reconfig(struct ieee80211_local *local);
  1254. void ieee80211_stop_device(struct ieee80211_local *local);
  1255. int __ieee80211_suspend(struct ieee80211_hw *hw,
  1256. struct cfg80211_wowlan *wowlan);
  1257. static inline int __ieee80211_resume(struct ieee80211_hw *hw)
  1258. {
  1259. struct ieee80211_local *local = hw_to_local(hw);
  1260. WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
  1261. "%s: resume with hardware scan still in progress\n",
  1262. wiphy_name(hw->wiphy));
  1263. return ieee80211_reconfig(hw_to_local(hw));
  1264. }
  1265. /* utility functions/constants */
  1266. extern void *mac80211_wiphy_privid; /* for wiphy privid */
  1267. u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
  1268. enum nl80211_iftype type);
  1269. int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
  1270. int rate, int erp, int short_preamble,
  1271. int shift);
  1272. void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
  1273. struct ieee80211_hdr *hdr, const u8 *tsc,
  1274. gfp_t gfp);
  1275. void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
  1276. bool bss_notify);
  1277. void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
  1278. enum ieee80211_band band);
  1279. void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
  1280. struct sk_buff *skb, int tid,
  1281. enum ieee80211_band band);
  1282. static inline void
  1283. ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
  1284. struct sk_buff *skb, int tid,
  1285. enum ieee80211_band band)
  1286. {
  1287. rcu_read_lock();
  1288. __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
  1289. rcu_read_unlock();
  1290. }
  1291. static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
  1292. struct sk_buff *skb, int tid)
  1293. {
  1294. struct ieee80211_chanctx_conf *chanctx_conf;
  1295. rcu_read_lock();
  1296. chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
  1297. if (WARN_ON(!chanctx_conf)) {
  1298. rcu_read_unlock();
  1299. kfree_skb(skb);
  1300. return;
  1301. }
  1302. __ieee80211_tx_skb_tid_band(sdata, skb, tid,
  1303. chanctx_conf->def.chan->band);
  1304. rcu_read_unlock();
  1305. }
  1306. static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
  1307. struct sk_buff *skb)
  1308. {
  1309. /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
  1310. ieee80211_tx_skb_tid(sdata, skb, 7);
  1311. }
  1312. u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
  1313. struct ieee802_11_elems *elems,
  1314. u64 filter, u32 crc);
  1315. static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
  1316. bool action,
  1317. struct ieee802_11_elems *elems)
  1318. {
  1319. ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
  1320. }
  1321. void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
  1322. void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
  1323. void ieee80211_dynamic_ps_timer(unsigned long data);
  1324. void ieee80211_send_nullfunc(struct ieee80211_local *local,
  1325. struct ieee80211_sub_if_data *sdata,
  1326. int powersave);
  1327. void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
  1328. struct ieee80211_hdr *hdr);
  1329. void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
  1330. struct ieee80211_hdr *hdr, bool ack);
  1331. void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
  1332. unsigned long queues,
  1333. enum queue_stop_reason reason);
  1334. void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
  1335. unsigned long queues,
  1336. enum queue_stop_reason reason);
  1337. void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
  1338. enum queue_stop_reason reason);
  1339. void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
  1340. enum queue_stop_reason reason);
  1341. void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
  1342. void ieee80211_add_pending_skb(struct ieee80211_local *local,
  1343. struct sk_buff *skb);
  1344. void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
  1345. struct sk_buff_head *skbs,
  1346. void (*fn)(void *data), void *data);
  1347. static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
  1348. struct sk_buff_head *skbs)
  1349. {
  1350. ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
  1351. }
  1352. void ieee80211_flush_queues(struct ieee80211_local *local,
  1353. struct ieee80211_sub_if_data *sdata);
  1354. void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
  1355. u16 transaction, u16 auth_alg, u16 status,
  1356. const u8 *extra, size_t extra_len, const u8 *bssid,
  1357. const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
  1358. u32 tx_flags);
  1359. void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
  1360. const u8 *bssid, u16 stype, u16 reason,
  1361. bool send_frame, u8 *frame_buf);
  1362. int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
  1363. size_t buffer_len, const u8 *ie, size_t ie_len,
  1364. enum ieee80211_band band, u32 rate_mask,
  1365. struct cfg80211_chan_def *chandef);
  1366. struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
  1367. u8 *dst, u32 ratemask,
  1368. struct ieee80211_channel *chan,
  1369. const u8 *ssid, size_t ssid_len,
  1370. const u8 *ie, size_t ie_len,
  1371. bool directed);
  1372. void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
  1373. const u8 *ssid, size_t ssid_len,
  1374. const u8 *ie, size_t ie_len,
  1375. u32 ratemask, bool directed, u32 tx_flags,
  1376. struct ieee80211_channel *channel, bool scan);
  1377. u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
  1378. struct ieee802_11_elems *elems,
  1379. enum ieee80211_band band, u32 *basic_rates);
  1380. int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
  1381. enum ieee80211_smps_mode smps_mode);
  1382. void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
  1383. size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
  1384. const u8 *ids, int n_ids, size_t offset);
  1385. size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
  1386. u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
  1387. u16 cap);
  1388. u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
  1389. const struct cfg80211_chan_def *chandef,
  1390. u16 prot_mode);
  1391. u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
  1392. u32 cap);
  1393. int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
  1394. const struct ieee80211_supported_band *sband,
  1395. const u8 *srates, int srates_len, u32 *rates);
  1396. int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
  1397. struct sk_buff *skb, bool need_basic,
  1398. enum ieee80211_band band);
  1399. int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
  1400. struct sk_buff *skb, bool need_basic,
  1401. enum ieee80211_band band);
  1402. /* channel management */
  1403. void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
  1404. const struct ieee80211_ht_operation *ht_oper,
  1405. struct cfg80211_chan_def *chandef);
  1406. int __must_check
  1407. ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
  1408. const struct cfg80211_chan_def *chandef,
  1409. enum ieee80211_chanctx_mode mode);
  1410. int __must_check
  1411. ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
  1412. const struct cfg80211_chan_def *chandef,
  1413. u32 *changed);
  1414. /* NOTE: only use ieee80211_vif_change_channel() for channel switch */
  1415. int __must_check
  1416. ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
  1417. const struct cfg80211_chan_def *chandef,
  1418. u32 *changed);
  1419. void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
  1420. void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
  1421. void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
  1422. bool clear);
  1423. void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
  1424. struct ieee80211_chanctx *chanctx);
  1425. void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
  1426. struct ieee80211_chanctx *chanctx);
  1427. void ieee80211_dfs_cac_timer(unsigned long data);
  1428. void ieee80211_dfs_cac_timer_work(struct work_struct *work);
  1429. void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
  1430. void ieee80211_dfs_radar_detected_work(struct work_struct *work);
  1431. #ifdef CONFIG_MAC80211_NOINLINE
  1432. #define debug_noinline noinline
  1433. #else
  1434. #define debug_noinline
  1435. #endif
  1436. #endif /* IEEE80211_I_H */