ieee80211_i.h 47 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. #define TU_TO_JIFFIES(x) (usecs_to_jiffies((x) * 1024))
  49. #define TU_TO_EXP_TIME(x) (jiffies + TU_TO_JIFFIES(x))
  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. /* don't want to look up all the time */
  73. size_t ssid_len;
  74. u8 ssid[IEEE80211_MAX_SSID_LEN];
  75. u32 device_ts;
  76. u8 dtim_period;
  77. bool wmm_used;
  78. bool uapsd_supported;
  79. unsigned long last_probe_resp;
  80. #ifdef CONFIG_MAC80211_MESH
  81. u8 *mesh_id;
  82. size_t mesh_id_len;
  83. u8 *mesh_cfg;
  84. #endif
  85. #define IEEE80211_MAX_SUPP_RATES 32
  86. u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
  87. size_t supp_rates_len;
  88. /*
  89. * During association, we save an ERP value from a probe response so
  90. * that we can feed ERP info to the driver when handling the
  91. * association completes. these fields probably won't be up-to-date
  92. * otherwise, you probably don't want to use them.
  93. */
  94. bool has_erp_value;
  95. u8 erp_value;
  96. /* Keep track of the corruption of the last beacon/probe response. */
  97. u8 corrupt_data;
  98. /* Keep track of what bits of information we have valid info for. */
  99. u8 valid_data;
  100. };
  101. /**
  102. * enum ieee80211_corrupt_data_flags - BSS data corruption flags
  103. * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
  104. * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
  105. *
  106. * These are bss flags that are attached to a bss in the
  107. * @corrupt_data field of &struct ieee80211_bss.
  108. */
  109. enum ieee80211_bss_corrupt_data_flags {
  110. IEEE80211_BSS_CORRUPT_BEACON = BIT(0),
  111. IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1)
  112. };
  113. /**
  114. * enum ieee80211_valid_data_flags - BSS valid data flags
  115. * @IEEE80211_BSS_VALID_DTIM: DTIM data was gathered from non-corrupt IE
  116. * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
  117. * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
  118. * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
  119. *
  120. * These are bss flags that are attached to a bss in the
  121. * @valid_data field of &struct ieee80211_bss. They show which parts
  122. * of the data structure were recieved as a result of an un-corrupted
  123. * beacon/probe response.
  124. */
  125. enum ieee80211_bss_valid_data_flags {
  126. IEEE80211_BSS_VALID_DTIM = BIT(0),
  127. IEEE80211_BSS_VALID_WMM = BIT(1),
  128. IEEE80211_BSS_VALID_RATES = BIT(2),
  129. IEEE80211_BSS_VALID_ERP = BIT(3)
  130. };
  131. static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
  132. {
  133. #ifdef CONFIG_MAC80211_MESH
  134. return bss->mesh_cfg;
  135. #endif
  136. return NULL;
  137. }
  138. static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
  139. {
  140. #ifdef CONFIG_MAC80211_MESH
  141. return bss->mesh_id;
  142. #endif
  143. return NULL;
  144. }
  145. static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
  146. {
  147. #ifdef CONFIG_MAC80211_MESH
  148. return bss->mesh_id_len;
  149. #endif
  150. return 0;
  151. }
  152. typedef unsigned __bitwise__ ieee80211_tx_result;
  153. #define TX_CONTINUE ((__force ieee80211_tx_result) 0u)
  154. #define TX_DROP ((__force ieee80211_tx_result) 1u)
  155. #define TX_QUEUED ((__force ieee80211_tx_result) 2u)
  156. #define IEEE80211_TX_UNICAST BIT(1)
  157. #define IEEE80211_TX_PS_BUFFERED BIT(2)
  158. struct ieee80211_tx_data {
  159. struct sk_buff *skb;
  160. struct sk_buff_head skbs;
  161. struct ieee80211_local *local;
  162. struct ieee80211_sub_if_data *sdata;
  163. struct sta_info *sta;
  164. struct ieee80211_key *key;
  165. unsigned int flags;
  166. };
  167. typedef unsigned __bitwise__ ieee80211_rx_result;
  168. #define RX_CONTINUE ((__force ieee80211_rx_result) 0u)
  169. #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u)
  170. #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u)
  171. #define RX_QUEUED ((__force ieee80211_rx_result) 3u)
  172. /**
  173. * enum ieee80211_packet_rx_flags - packet RX flags
  174. * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
  175. * (incl. multicast frames)
  176. * @IEEE80211_RX_FRAGMENTED: fragmented frame
  177. * @IEEE80211_RX_AMSDU: a-MSDU packet
  178. * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
  179. * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
  180. *
  181. * These are per-frame flags that are attached to a frame in the
  182. * @rx_flags field of &struct ieee80211_rx_status.
  183. */
  184. enum ieee80211_packet_rx_flags {
  185. IEEE80211_RX_RA_MATCH = BIT(1),
  186. IEEE80211_RX_FRAGMENTED = BIT(2),
  187. IEEE80211_RX_AMSDU = BIT(3),
  188. IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4),
  189. IEEE80211_RX_DEFERRED_RELEASE = BIT(5),
  190. };
  191. /**
  192. * enum ieee80211_rx_flags - RX data flags
  193. *
  194. * @IEEE80211_RX_CMNTR: received on cooked monitor already
  195. * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
  196. * to cfg80211_report_obss_beacon().
  197. *
  198. * These flags are used across handling multiple interfaces
  199. * for a single frame.
  200. */
  201. enum ieee80211_rx_flags {
  202. IEEE80211_RX_CMNTR = BIT(0),
  203. IEEE80211_RX_BEACON_REPORTED = BIT(1),
  204. };
  205. struct ieee80211_rx_data {
  206. struct sk_buff *skb;
  207. struct ieee80211_local *local;
  208. struct ieee80211_sub_if_data *sdata;
  209. struct sta_info *sta;
  210. struct ieee80211_key *key;
  211. unsigned int flags;
  212. /*
  213. * Index into sequence numbers array, 0..16
  214. * since the last (16) is used for non-QoS,
  215. * will be 16 on non-QoS frames.
  216. */
  217. int seqno_idx;
  218. /*
  219. * Index into the security IV/PN arrays, 0..16
  220. * since the last (16) is used for CCMP-encrypted
  221. * management frames, will be set to 16 on mgmt
  222. * frames and 0 on non-QoS frames.
  223. */
  224. int security_idx;
  225. u32 tkip_iv32;
  226. u16 tkip_iv16;
  227. };
  228. struct beacon_data {
  229. u8 *head, *tail;
  230. int head_len, tail_len;
  231. struct rcu_head rcu_head;
  232. };
  233. struct probe_resp {
  234. struct rcu_head rcu_head;
  235. int len;
  236. u8 data[0];
  237. };
  238. struct ieee80211_if_ap {
  239. struct beacon_data __rcu *beacon;
  240. struct probe_resp __rcu *probe_resp;
  241. struct list_head vlans;
  242. /* yes, this looks ugly, but guarantees that we can later use
  243. * bitmap_empty :)
  244. * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
  245. u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
  246. struct sk_buff_head ps_bc_buf;
  247. atomic_t num_sta_ps; /* number of stations in PS mode */
  248. atomic_t num_mcast_sta; /* number of stations receiving multicast */
  249. int dtim_count;
  250. bool dtim_bc_mc;
  251. };
  252. struct ieee80211_if_wds {
  253. struct sta_info *sta;
  254. u8 remote_addr[ETH_ALEN];
  255. };
  256. struct ieee80211_if_vlan {
  257. struct list_head list;
  258. /* used for all tx if the VLAN is configured to 4-addr mode */
  259. struct sta_info __rcu *sta;
  260. };
  261. struct mesh_stats {
  262. __u32 fwded_mcast; /* Mesh forwarded multicast frames */
  263. __u32 fwded_unicast; /* Mesh forwarded unicast frames */
  264. __u32 fwded_frames; /* Mesh total forwarded frames */
  265. __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/
  266. __u32 dropped_frames_no_route; /* Not transmitted, no route found */
  267. __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
  268. };
  269. #define PREQ_Q_F_START 0x1
  270. #define PREQ_Q_F_REFRESH 0x2
  271. struct mesh_preq_queue {
  272. struct list_head list;
  273. u8 dst[ETH_ALEN];
  274. u8 flags;
  275. };
  276. #if HZ/100 == 0
  277. #define IEEE80211_ROC_MIN_LEFT 1
  278. #else
  279. #define IEEE80211_ROC_MIN_LEFT (HZ/100)
  280. #endif
  281. struct ieee80211_roc_work {
  282. struct list_head list;
  283. struct list_head dependents;
  284. struct delayed_work work;
  285. struct ieee80211_sub_if_data *sdata;
  286. struct ieee80211_channel *chan;
  287. enum nl80211_channel_type chan_type;
  288. bool started, abort, hw_begun, notified;
  289. unsigned long hw_start_time;
  290. u32 duration, req_duration;
  291. struct sk_buff *frame;
  292. u64 mgmt_tx_cookie;
  293. };
  294. /* flags used in struct ieee80211_if_managed.flags */
  295. enum ieee80211_sta_flags {
  296. IEEE80211_STA_BEACON_POLL = BIT(0),
  297. IEEE80211_STA_CONNECTION_POLL = BIT(1),
  298. IEEE80211_STA_CONTROL_PORT = BIT(2),
  299. IEEE80211_STA_DISABLE_11N = BIT(4),
  300. IEEE80211_STA_CSA_RECEIVED = BIT(5),
  301. IEEE80211_STA_MFP_ENABLED = BIT(6),
  302. IEEE80211_STA_UAPSD_ENABLED = BIT(7),
  303. IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
  304. IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
  305. IEEE80211_STA_DISABLE_40MHZ = BIT(10),
  306. IEEE80211_STA_DISABLE_VHT = BIT(11),
  307. };
  308. struct ieee80211_mgd_auth_data {
  309. struct cfg80211_bss *bss;
  310. unsigned long timeout;
  311. int tries;
  312. u16 algorithm, expected_transaction;
  313. u8 key[WLAN_KEY_LEN_WEP104];
  314. u8 key_len, key_idx;
  315. bool done;
  316. u16 sae_trans, sae_status;
  317. size_t data_len;
  318. u8 data[];
  319. };
  320. struct ieee80211_mgd_assoc_data {
  321. struct cfg80211_bss *bss;
  322. const u8 *supp_rates;
  323. unsigned long timeout;
  324. int tries;
  325. u16 capability;
  326. u8 prev_bssid[ETH_ALEN];
  327. u8 ssid[IEEE80211_MAX_SSID_LEN];
  328. u8 ssid_len;
  329. u8 supp_rates_len;
  330. bool wmm, uapsd;
  331. bool have_beacon;
  332. bool sent_assoc;
  333. bool synced;
  334. u8 ap_ht_param;
  335. size_t ie_len;
  336. u8 ie[];
  337. };
  338. struct ieee80211_if_managed {
  339. struct timer_list timer;
  340. struct timer_list conn_mon_timer;
  341. struct timer_list bcn_mon_timer;
  342. struct timer_list chswitch_timer;
  343. struct work_struct monitor_work;
  344. struct work_struct chswitch_work;
  345. struct work_struct beacon_connection_loss_work;
  346. struct work_struct csa_connection_drop_work;
  347. unsigned long beacon_timeout;
  348. unsigned long probe_timeout;
  349. int probe_send_count;
  350. bool nullfunc_failed;
  351. struct mutex mtx;
  352. struct cfg80211_bss *associated;
  353. struct ieee80211_mgd_auth_data *auth_data;
  354. struct ieee80211_mgd_assoc_data *assoc_data;
  355. u8 bssid[ETH_ALEN];
  356. u16 aid;
  357. unsigned long timers_running; /* used for quiesce/restart */
  358. bool powersave; /* powersave requested for this iface */
  359. bool broken_ap; /* AP is broken -- turn off powersave */
  360. enum ieee80211_smps_mode req_smps, /* requested smps mode */
  361. driver_smps_mode; /* smps mode request */
  362. struct work_struct request_smps_work;
  363. unsigned int flags;
  364. bool beacon_crc_valid;
  365. u32 beacon_crc;
  366. enum {
  367. IEEE80211_MFP_DISABLED,
  368. IEEE80211_MFP_OPTIONAL,
  369. IEEE80211_MFP_REQUIRED
  370. } mfp; /* management frame protection */
  371. /*
  372. * Bitmask of enabled u-apsd queues,
  373. * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
  374. * to take effect.
  375. */
  376. unsigned int uapsd_queues;
  377. /*
  378. * Maximum number of buffered frames AP can deliver during a
  379. * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
  380. * Needs a new association to take effect.
  381. */
  382. unsigned int uapsd_max_sp_len;
  383. int wmm_last_param_set;
  384. u8 use_4addr;
  385. /* Signal strength from the last Beacon frame in the current BSS. */
  386. int last_beacon_signal;
  387. /*
  388. * Weighted average of the signal strength from Beacon frames in the
  389. * current BSS. This is in units of 1/16 of the signal unit to maintain
  390. * accuracy and to speed up calculations, i.e., the value need to be
  391. * divided by 16 to get the actual value.
  392. */
  393. int ave_beacon_signal;
  394. /*
  395. * Number of Beacon frames used in ave_beacon_signal. This can be used
  396. * to avoid generating less reliable cqm events that would be based
  397. * only on couple of received frames.
  398. */
  399. unsigned int count_beacon_signal;
  400. /*
  401. * Last Beacon frame signal strength average (ave_beacon_signal / 16)
  402. * that triggered a cqm event. 0 indicates that no event has been
  403. * generated for the current association.
  404. */
  405. int last_cqm_event_signal;
  406. /*
  407. * State variables for keeping track of RSSI of the AP currently
  408. * connected to and informing driver when RSSI has gone
  409. * below/above a certain threshold.
  410. */
  411. int rssi_min_thold, rssi_max_thold;
  412. int last_ave_beacon_signal;
  413. struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
  414. struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
  415. };
  416. struct ieee80211_if_ibss {
  417. struct timer_list timer;
  418. struct mutex mtx;
  419. unsigned long last_scan_completed;
  420. u32 basic_rates;
  421. bool timer_running;
  422. bool fixed_bssid;
  423. bool fixed_channel;
  424. bool privacy;
  425. bool control_port;
  426. unsigned int auth_frame_registrations;
  427. u8 bssid[ETH_ALEN] __aligned(2);
  428. u8 ssid[IEEE80211_MAX_SSID_LEN];
  429. u8 ssid_len, ie_len;
  430. u8 *ie;
  431. struct ieee80211_channel *channel;
  432. enum nl80211_channel_type channel_type;
  433. unsigned long ibss_join_req;
  434. /* probe response/beacon for IBSS */
  435. struct sk_buff __rcu *presp;
  436. struct sk_buff *skb;
  437. spinlock_t incomplete_lock;
  438. struct list_head incomplete_stations;
  439. enum {
  440. IEEE80211_IBSS_MLME_SEARCH,
  441. IEEE80211_IBSS_MLME_JOINED,
  442. } state;
  443. };
  444. /**
  445. * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
  446. *
  447. * these declarations define the interface, which enables
  448. * vendor-specific mesh synchronization
  449. *
  450. */
  451. struct ieee802_11_elems;
  452. struct ieee80211_mesh_sync_ops {
  453. void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
  454. u16 stype,
  455. struct ieee80211_mgmt *mgmt,
  456. struct ieee802_11_elems *elems,
  457. struct ieee80211_rx_status *rx_status);
  458. void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
  459. /* add other framework functions here */
  460. };
  461. struct ieee80211_if_mesh {
  462. struct timer_list housekeeping_timer;
  463. struct timer_list mesh_path_timer;
  464. struct timer_list mesh_path_root_timer;
  465. unsigned long timers_running;
  466. unsigned long wrkq_flags;
  467. u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
  468. size_t mesh_id_len;
  469. /* Active Path Selection Protocol Identifier */
  470. u8 mesh_pp_id;
  471. /* Active Path Selection Metric Identifier */
  472. u8 mesh_pm_id;
  473. /* Congestion Control Mode Identifier */
  474. u8 mesh_cc_id;
  475. /* Synchronization Protocol Identifier */
  476. u8 mesh_sp_id;
  477. /* Authentication Protocol Identifier */
  478. u8 mesh_auth_id;
  479. /* Local mesh Sequence Number */
  480. u32 sn;
  481. /* Last used PREQ ID */
  482. u32 preq_id;
  483. atomic_t mpaths;
  484. /* Timestamp of last SN update */
  485. unsigned long last_sn_update;
  486. /* Time when it's ok to send next PERR */
  487. unsigned long next_perr;
  488. /* Timestamp of last PREQ sent */
  489. unsigned long last_preq;
  490. struct mesh_rmc *rmc;
  491. spinlock_t mesh_preq_queue_lock;
  492. struct mesh_preq_queue preq_queue;
  493. int preq_queue_len;
  494. struct mesh_stats mshstats;
  495. struct mesh_config mshcfg;
  496. atomic_t estab_plinks;
  497. u32 mesh_seqnum;
  498. bool accepting_plinks;
  499. int num_gates;
  500. const u8 *ie;
  501. u8 ie_len;
  502. enum {
  503. IEEE80211_MESH_SEC_NONE = 0x0,
  504. IEEE80211_MESH_SEC_AUTHED = 0x1,
  505. IEEE80211_MESH_SEC_SECURED = 0x2,
  506. } security;
  507. /* Extensible Synchronization Framework */
  508. struct ieee80211_mesh_sync_ops *sync_ops;
  509. s64 sync_offset_clockdrift_max;
  510. spinlock_t sync_offset_lock;
  511. bool adjusting_tbtt;
  512. };
  513. #ifdef CONFIG_MAC80211_MESH
  514. #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
  515. do { (msh)->mshstats.name++; } while (0)
  516. #else
  517. #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
  518. do { } while (0)
  519. #endif
  520. /**
  521. * enum ieee80211_sub_if_data_flags - virtual interface flags
  522. *
  523. * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
  524. * @IEEE80211_SDATA_PROMISC: interface is promisc
  525. * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
  526. * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
  527. * associated stations and deliver multicast frames both
  528. * back to wireless media and to the local net stack.
  529. * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
  530. * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
  531. */
  532. enum ieee80211_sub_if_data_flags {
  533. IEEE80211_SDATA_ALLMULTI = BIT(0),
  534. IEEE80211_SDATA_PROMISC = BIT(1),
  535. IEEE80211_SDATA_OPERATING_GMODE = BIT(2),
  536. IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3),
  537. IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4),
  538. IEEE80211_SDATA_IN_DRIVER = BIT(5),
  539. };
  540. /**
  541. * enum ieee80211_sdata_state_bits - virtual interface state bits
  542. * @SDATA_STATE_RUNNING: virtual interface is up & running; this
  543. * mirrors netif_running() but is separate for interface type
  544. * change handling while the interface is up
  545. * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
  546. * mode, so queues are stopped
  547. */
  548. enum ieee80211_sdata_state_bits {
  549. SDATA_STATE_RUNNING,
  550. SDATA_STATE_OFFCHANNEL,
  551. };
  552. /**
  553. * enum ieee80211_chanctx_mode - channel context configuration mode
  554. *
  555. * @IEEE80211_CHANCTX_SHARED: channel context may be used by
  556. * multiple interfaces
  557. * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
  558. * only by a single interface. This can be used for example for
  559. * non-fixed channel IBSS.
  560. */
  561. enum ieee80211_chanctx_mode {
  562. IEEE80211_CHANCTX_SHARED,
  563. IEEE80211_CHANCTX_EXCLUSIVE
  564. };
  565. struct ieee80211_chanctx {
  566. struct list_head list;
  567. struct rcu_head rcu_head;
  568. enum ieee80211_chanctx_mode mode;
  569. int refcount;
  570. struct ieee80211_chanctx_conf conf;
  571. };
  572. struct ieee80211_sub_if_data {
  573. struct list_head list;
  574. struct wireless_dev wdev;
  575. /* keys */
  576. struct list_head key_list;
  577. /* count for keys needing tailroom space allocation */
  578. int crypto_tx_tailroom_needed_cnt;
  579. struct net_device *dev;
  580. struct ieee80211_local *local;
  581. unsigned int flags;
  582. unsigned long state;
  583. int drop_unencrypted;
  584. char name[IFNAMSIZ];
  585. /* to detect idle changes */
  586. bool old_idle;
  587. /* Fragment table for host-based reassembly */
  588. struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX];
  589. unsigned int fragment_next;
  590. /* TID bitmap for NoAck policy */
  591. u16 noack_map;
  592. /* bit field of ACM bits (BIT(802.1D tag)) */
  593. u8 wmm_acm;
  594. struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
  595. struct ieee80211_key __rcu *default_unicast_key;
  596. struct ieee80211_key __rcu *default_multicast_key;
  597. struct ieee80211_key __rcu *default_mgmt_key;
  598. u16 sequence_number;
  599. __be16 control_port_protocol;
  600. bool control_port_no_encrypt;
  601. struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
  602. /* used to reconfigure hardware SM PS */
  603. struct work_struct recalc_smps;
  604. struct work_struct work;
  605. struct sk_buff_head skb_queue;
  606. bool arp_filter_state;
  607. u8 needed_rx_chains;
  608. enum ieee80211_smps_mode smps_mode;
  609. /*
  610. * AP this belongs to: self in AP mode and
  611. * corresponding AP in VLAN mode, NULL for
  612. * all others (might be needed later in IBSS)
  613. */
  614. struct ieee80211_if_ap *bss;
  615. /* bitmap of allowed (non-MCS) rate indexes for rate control */
  616. u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
  617. u8 rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
  618. union {
  619. struct ieee80211_if_ap ap;
  620. struct ieee80211_if_wds wds;
  621. struct ieee80211_if_vlan vlan;
  622. struct ieee80211_if_managed mgd;
  623. struct ieee80211_if_ibss ibss;
  624. struct ieee80211_if_mesh mesh;
  625. u32 mntr_flags;
  626. } u;
  627. #ifdef CONFIG_MAC80211_DEBUGFS
  628. struct {
  629. struct dentry *dir;
  630. struct dentry *subdir_stations;
  631. struct dentry *default_unicast_key;
  632. struct dentry *default_multicast_key;
  633. struct dentry *default_mgmt_key;
  634. } debugfs;
  635. #endif
  636. /* must be last, dynamically sized area in this! */
  637. struct ieee80211_vif vif;
  638. };
  639. static inline
  640. struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
  641. {
  642. return container_of(p, struct ieee80211_sub_if_data, vif);
  643. }
  644. static inline enum ieee80211_band
  645. ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
  646. {
  647. enum ieee80211_band band = IEEE80211_BAND_2GHZ;
  648. struct ieee80211_chanctx_conf *chanctx_conf;
  649. rcu_read_lock();
  650. chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
  651. if (!WARN_ON(!chanctx_conf))
  652. band = chanctx_conf->channel->band;
  653. rcu_read_unlock();
  654. return band;
  655. }
  656. enum sdata_queue_type {
  657. IEEE80211_SDATA_QUEUE_TYPE_FRAME = 0,
  658. IEEE80211_SDATA_QUEUE_AGG_START = 1,
  659. IEEE80211_SDATA_QUEUE_AGG_STOP = 2,
  660. };
  661. enum {
  662. IEEE80211_RX_MSG = 1,
  663. IEEE80211_TX_STATUS_MSG = 2,
  664. IEEE80211_EOSP_MSG = 3,
  665. };
  666. struct skb_eosp_msg_data {
  667. u8 sta[ETH_ALEN], iface[ETH_ALEN];
  668. };
  669. enum queue_stop_reason {
  670. IEEE80211_QUEUE_STOP_REASON_DRIVER,
  671. IEEE80211_QUEUE_STOP_REASON_PS,
  672. IEEE80211_QUEUE_STOP_REASON_CSA,
  673. IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
  674. IEEE80211_QUEUE_STOP_REASON_SUSPEND,
  675. IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
  676. };
  677. #ifdef CONFIG_MAC80211_LEDS
  678. struct tpt_led_trigger {
  679. struct led_trigger trig;
  680. char name[32];
  681. const struct ieee80211_tpt_blink *blink_table;
  682. unsigned int blink_table_len;
  683. struct timer_list timer;
  684. unsigned long prev_traffic;
  685. unsigned long tx_bytes, rx_bytes;
  686. unsigned int active, want;
  687. bool running;
  688. };
  689. #endif
  690. /**
  691. * mac80211 scan flags - currently active scan mode
  692. *
  693. * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
  694. * well be on the operating channel
  695. * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
  696. * determine if we are on the operating channel or not
  697. * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating
  698. * channel. This should not interrupt normal traffic.
  699. * @SCAN_COMPLETED: Set for our scan work function when the driver reported
  700. * that the scan completed.
  701. * @SCAN_ABORTED: Set for our scan work function when the driver reported
  702. * a scan complete for an aborted scan.
  703. */
  704. enum {
  705. SCAN_SW_SCANNING,
  706. SCAN_HW_SCANNING,
  707. SCAN_ONCHANNEL_SCANNING,
  708. SCAN_COMPLETED,
  709. SCAN_ABORTED,
  710. };
  711. /**
  712. * enum mac80211_scan_state - scan state machine states
  713. *
  714. * @SCAN_DECISION: Main entry point to the scan state machine, this state
  715. * determines if we should keep on scanning or switch back to the
  716. * operating channel
  717. * @SCAN_SET_CHANNEL: Set the next channel to be scanned
  718. * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
  719. * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
  720. * send out data
  721. * @SCAN_RESUME: Resume the scan and scan the next channel
  722. */
  723. enum mac80211_scan_state {
  724. SCAN_DECISION,
  725. SCAN_SET_CHANNEL,
  726. SCAN_SEND_PROBE,
  727. SCAN_SUSPEND,
  728. SCAN_RESUME,
  729. };
  730. struct ieee80211_local {
  731. /* embed the driver visible part.
  732. * don't cast (use the static inlines below), but we keep
  733. * it first anyway so they become a no-op */
  734. struct ieee80211_hw hw;
  735. const struct ieee80211_ops *ops;
  736. /*
  737. * private workqueue to mac80211. mac80211 makes this accessible
  738. * via ieee80211_queue_work()
  739. */
  740. struct workqueue_struct *workqueue;
  741. unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
  742. /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
  743. spinlock_t queue_stop_reason_lock;
  744. int open_count;
  745. int monitors, cooked_mntrs;
  746. /* number of interfaces with corresponding FIF_ flags */
  747. int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
  748. fif_probe_req;
  749. int probe_req_reg;
  750. unsigned int filter_flags; /* FIF_* */
  751. bool wiphy_ciphers_allocated;
  752. bool use_chanctx;
  753. /* protects the aggregated multicast list and filter calls */
  754. spinlock_t filter_lock;
  755. /* used for uploading changed mc list */
  756. struct work_struct reconfig_filter;
  757. /* aggregated multicast list */
  758. struct netdev_hw_addr_list mc_list;
  759. bool tim_in_locked_section; /* see ieee80211_beacon_get() */
  760. /*
  761. * suspended is true if we finished all the suspend _and_ we have
  762. * not yet come up from resume. This is to be used by mac80211
  763. * to ensure driver sanity during suspend and mac80211's own
  764. * sanity. It can eventually be used for WoW as well.
  765. */
  766. bool suspended;
  767. /*
  768. * Resuming is true while suspended, but when we're reprogramming the
  769. * hardware -- at that time it's allowed to use ieee80211_queue_work()
  770. * again even though some other parts of the stack are still suspended
  771. * and we still drop received frames to avoid waking the stack.
  772. */
  773. bool resuming;
  774. /*
  775. * quiescing is true during the suspend process _only_ to
  776. * ease timer cancelling etc.
  777. */
  778. bool quiescing;
  779. /* device is started */
  780. bool started;
  781. /* device is during a HW reconfig */
  782. bool in_reconfig;
  783. /* wowlan is enabled -- don't reconfig on resume */
  784. bool wowlan;
  785. /* number of RX chains the hardware has */
  786. u8 rx_chains;
  787. int tx_headroom; /* required headroom for hardware/radiotap */
  788. /* Tasklet and skb queue to process calls from IRQ mode. All frames
  789. * added to skb_queue will be processed, but frames in
  790. * skb_queue_unreliable may be dropped if the total length of these
  791. * queues increases over the limit. */
  792. #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
  793. struct tasklet_struct tasklet;
  794. struct sk_buff_head skb_queue;
  795. struct sk_buff_head skb_queue_unreliable;
  796. /*
  797. * Internal FIFO queue which is shared between multiple rx path
  798. * stages. Its main task is to provide a serialization mechanism,
  799. * so all rx handlers can enjoy having exclusive access to their
  800. * private data structures.
  801. */
  802. struct sk_buff_head rx_skb_queue;
  803. bool running_rx_handler; /* protected by rx_skb_queue.lock */
  804. /* Station data */
  805. /*
  806. * The mutex only protects the list, hash table and
  807. * counter, reads are done with RCU.
  808. */
  809. struct mutex sta_mtx;
  810. spinlock_t tim_lock;
  811. unsigned long num_sta;
  812. struct list_head sta_list;
  813. struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
  814. struct timer_list sta_cleanup;
  815. int sta_generation;
  816. struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
  817. struct tasklet_struct tx_pending_tasklet;
  818. atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
  819. /* number of interfaces with corresponding IFF_ flags */
  820. atomic_t iff_allmultis, iff_promiscs;
  821. struct rate_control_ref *rate_ctrl;
  822. struct crypto_cipher *wep_tx_tfm;
  823. struct crypto_cipher *wep_rx_tfm;
  824. u32 wep_iv;
  825. /* see iface.c */
  826. struct list_head interfaces;
  827. struct mutex iflist_mtx;
  828. /*
  829. * Key mutex, protects sdata's key_list and sta_info's
  830. * key pointers (write access, they're RCU.)
  831. */
  832. struct mutex key_mtx;
  833. /* mutex for scan and work locking */
  834. struct mutex mtx;
  835. /* Scanning and BSS list */
  836. unsigned long scanning;
  837. struct cfg80211_ssid scan_ssid;
  838. struct cfg80211_scan_request *int_scan_req;
  839. struct cfg80211_scan_request *scan_req, *hw_scan_req;
  840. struct ieee80211_channel *scan_channel;
  841. enum ieee80211_band hw_scan_band;
  842. int scan_channel_idx;
  843. int scan_ies_len;
  844. struct work_struct sched_scan_stopped_work;
  845. struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
  846. unsigned long leave_oper_channel_time;
  847. enum mac80211_scan_state next_scan_state;
  848. struct delayed_work scan_work;
  849. struct ieee80211_sub_if_data __rcu *scan_sdata;
  850. struct ieee80211_channel *csa_channel;
  851. /* For backward compatibility only -- do not use */
  852. struct ieee80211_channel *_oper_channel;
  853. enum nl80211_channel_type _oper_channel_type;
  854. /* Temporary remain-on-channel for off-channel operations */
  855. struct ieee80211_channel *tmp_channel;
  856. enum nl80211_channel_type tmp_channel_type;
  857. /* channel contexts */
  858. struct list_head chanctx_list;
  859. struct mutex chanctx_mtx;
  860. /* SNMP counters */
  861. /* dot11CountersTable */
  862. u32 dot11TransmittedFragmentCount;
  863. u32 dot11MulticastTransmittedFrameCount;
  864. u32 dot11FailedCount;
  865. u32 dot11RetryCount;
  866. u32 dot11MultipleRetryCount;
  867. u32 dot11FrameDuplicateCount;
  868. u32 dot11ReceivedFragmentCount;
  869. u32 dot11MulticastReceivedFrameCount;
  870. u32 dot11TransmittedFrameCount;
  871. #ifdef CONFIG_MAC80211_LEDS
  872. int tx_led_counter, rx_led_counter;
  873. struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
  874. struct tpt_led_trigger *tpt_led_trigger;
  875. char tx_led_name[32], rx_led_name[32],
  876. assoc_led_name[32], radio_led_name[32];
  877. #endif
  878. #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
  879. /* TX/RX handler statistics */
  880. unsigned int tx_handlers_drop;
  881. unsigned int tx_handlers_queued;
  882. unsigned int tx_handlers_drop_unencrypted;
  883. unsigned int tx_handlers_drop_fragment;
  884. unsigned int tx_handlers_drop_wep;
  885. unsigned int tx_handlers_drop_not_assoc;
  886. unsigned int tx_handlers_drop_unauth_port;
  887. unsigned int rx_handlers_drop;
  888. unsigned int rx_handlers_queued;
  889. unsigned int rx_handlers_drop_nullfunc;
  890. unsigned int rx_handlers_drop_defrag;
  891. unsigned int rx_handlers_drop_short;
  892. unsigned int tx_expand_skb_head;
  893. unsigned int tx_expand_skb_head_cloned;
  894. unsigned int rx_expand_skb_head;
  895. unsigned int rx_expand_skb_head2;
  896. unsigned int rx_handlers_fragments;
  897. unsigned int tx_status_drop;
  898. #define I802_DEBUG_INC(c) (c)++
  899. #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
  900. #define I802_DEBUG_INC(c) do { } while (0)
  901. #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
  902. int total_ps_buffered; /* total number of all buffered unicast and
  903. * multicast packets for power saving stations
  904. */
  905. bool pspolling;
  906. bool offchannel_ps_enabled;
  907. /*
  908. * PS can only be enabled when we have exactly one managed
  909. * interface (and monitors) in PS, this then points there.
  910. */
  911. struct ieee80211_sub_if_data *ps_sdata;
  912. struct work_struct dynamic_ps_enable_work;
  913. struct work_struct dynamic_ps_disable_work;
  914. struct timer_list dynamic_ps_timer;
  915. struct notifier_block network_latency_notifier;
  916. struct notifier_block ifa_notifier;
  917. /*
  918. * The dynamic ps timeout configured from user space via WEXT -
  919. * this will override whatever chosen by mac80211 internally.
  920. */
  921. int dynamic_ps_forced_timeout;
  922. int dynamic_ps_user_timeout;
  923. bool disable_dynamic_ps;
  924. int user_power_level; /* in dBm */
  925. int ap_power_level; /* in dBm */
  926. enum ieee80211_smps_mode smps_mode;
  927. struct work_struct restart_work;
  928. #ifdef CONFIG_MAC80211_DEBUGFS
  929. struct local_debugfsdentries {
  930. struct dentry *rcdir;
  931. struct dentry *keys;
  932. } debugfs;
  933. #endif
  934. /*
  935. * Remain-on-channel support
  936. */
  937. struct list_head roc_list;
  938. struct work_struct hw_roc_start, hw_roc_done;
  939. unsigned long hw_roc_start_time;
  940. struct idr ack_status_frames;
  941. spinlock_t ack_status_lock;
  942. struct ieee80211_sub_if_data __rcu *p2p_sdata;
  943. /* dummy netdev for use w/ NAPI */
  944. struct net_device napi_dev;
  945. struct napi_struct napi;
  946. /* virtual monitor interface */
  947. struct ieee80211_sub_if_data __rcu *monitor_sdata;
  948. struct ieee80211_channel *monitor_channel;
  949. enum nl80211_channel_type monitor_channel_type;
  950. };
  951. static inline struct ieee80211_sub_if_data *
  952. IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
  953. {
  954. return netdev_priv(dev);
  955. }
  956. static inline struct ieee80211_sub_if_data *
  957. IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
  958. {
  959. return container_of(wdev, struct ieee80211_sub_if_data, wdev);
  960. }
  961. /* this struct represents 802.11n's RA/TID combination */
  962. struct ieee80211_ra_tid {
  963. u8 ra[ETH_ALEN];
  964. u16 tid;
  965. };
  966. /* Parsed Information Elements */
  967. struct ieee802_11_elems {
  968. u8 *ie_start;
  969. size_t total_len;
  970. /* pointers to IEs */
  971. u8 *ssid;
  972. u8 *supp_rates;
  973. u8 *fh_params;
  974. u8 *ds_params;
  975. u8 *cf_params;
  976. struct ieee80211_tim_ie *tim;
  977. u8 *ibss_params;
  978. u8 *challenge;
  979. u8 *wpa;
  980. u8 *rsn;
  981. u8 *erp_info;
  982. u8 *ext_supp_rates;
  983. u8 *wmm_info;
  984. u8 *wmm_param;
  985. struct ieee80211_ht_cap *ht_cap_elem;
  986. struct ieee80211_ht_operation *ht_operation;
  987. struct ieee80211_meshconf_ie *mesh_config;
  988. u8 *mesh_id;
  989. u8 *peering;
  990. u8 *preq;
  991. u8 *prep;
  992. u8 *perr;
  993. struct ieee80211_rann_ie *rann;
  994. struct ieee80211_channel_sw_ie *ch_switch_ie;
  995. u8 *country_elem;
  996. u8 *pwr_constr_elem;
  997. u8 *quiet_elem; /* first quite element */
  998. u8 *timeout_int;
  999. /* length of them, respectively */
  1000. u8 ssid_len;
  1001. u8 supp_rates_len;
  1002. u8 fh_params_len;
  1003. u8 ds_params_len;
  1004. u8 cf_params_len;
  1005. u8 tim_len;
  1006. u8 ibss_params_len;
  1007. u8 challenge_len;
  1008. u8 wpa_len;
  1009. u8 rsn_len;
  1010. u8 erp_info_len;
  1011. u8 ext_supp_rates_len;
  1012. u8 wmm_info_len;
  1013. u8 wmm_param_len;
  1014. u8 mesh_id_len;
  1015. u8 peering_len;
  1016. u8 preq_len;
  1017. u8 prep_len;
  1018. u8 perr_len;
  1019. u8 country_elem_len;
  1020. u8 quiet_elem_len;
  1021. u8 num_of_quiet_elem; /* can be more the one */
  1022. u8 timeout_int_len;
  1023. /* whether a parse error occurred while retrieving these elements */
  1024. bool parse_error;
  1025. };
  1026. static inline struct ieee80211_local *hw_to_local(
  1027. struct ieee80211_hw *hw)
  1028. {
  1029. return container_of(hw, struct ieee80211_local, hw);
  1030. }
  1031. static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
  1032. {
  1033. return ether_addr_equal(raddr, addr) ||
  1034. is_broadcast_ether_addr(raddr);
  1035. }
  1036. int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
  1037. void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
  1038. void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
  1039. u32 changed);
  1040. void ieee80211_configure_filter(struct ieee80211_local *local);
  1041. u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
  1042. /* STA code */
  1043. void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
  1044. int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
  1045. struct cfg80211_auth_request *req);
  1046. int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
  1047. struct cfg80211_assoc_request *req);
  1048. int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
  1049. struct cfg80211_deauth_request *req);
  1050. int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
  1051. struct cfg80211_disassoc_request *req);
  1052. void ieee80211_send_pspoll(struct ieee80211_local *local,
  1053. struct ieee80211_sub_if_data *sdata);
  1054. void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
  1055. void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
  1056. int ieee80211_max_network_latency(struct notifier_block *nb,
  1057. unsigned long data, void *dummy);
  1058. int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
  1059. void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
  1060. struct ieee80211_channel_sw_ie *sw_elem,
  1061. struct ieee80211_bss *bss,
  1062. u64 timestamp);
  1063. void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
  1064. void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
  1065. void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
  1066. void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
  1067. struct sk_buff *skb);
  1068. void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
  1069. void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
  1070. void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
  1071. /* IBSS code */
  1072. void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
  1073. void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
  1074. void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
  1075. const u8 *bssid, const u8 *addr, u32 supp_rates);
  1076. int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
  1077. struct cfg80211_ibss_params *params);
  1078. int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
  1079. void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
  1080. void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
  1081. void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
  1082. void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
  1083. struct sk_buff *skb);
  1084. /* mesh code */
  1085. void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
  1086. void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
  1087. struct sk_buff *skb);
  1088. /* scan/BSS handling */
  1089. void ieee80211_scan_work(struct work_struct *work);
  1090. int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
  1091. const u8 *ssid, u8 ssid_len,
  1092. struct ieee80211_channel *chan);
  1093. int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
  1094. struct cfg80211_scan_request *req);
  1095. void ieee80211_scan_cancel(struct ieee80211_local *local);
  1096. void ieee80211_run_deferred_scan(struct ieee80211_local *local);
  1097. void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
  1098. void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
  1099. struct ieee80211_bss *
  1100. ieee80211_bss_info_update(struct ieee80211_local *local,
  1101. struct ieee80211_rx_status *rx_status,
  1102. struct ieee80211_mgmt *mgmt,
  1103. size_t len,
  1104. struct ieee802_11_elems *elems,
  1105. struct ieee80211_channel *channel,
  1106. bool beacon);
  1107. void ieee80211_rx_bss_put(struct ieee80211_local *local,
  1108. struct ieee80211_bss *bss);
  1109. /* scheduled scan handling */
  1110. int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
  1111. struct cfg80211_sched_scan_request *req);
  1112. int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
  1113. void ieee80211_sched_scan_stopped_work(struct work_struct *work);
  1114. /* off-channel helpers */
  1115. void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
  1116. bool offchannel_ps_enable);
  1117. void ieee80211_offchannel_return(struct ieee80211_local *local,
  1118. bool offchannel_ps_disable);
  1119. void ieee80211_roc_setup(struct ieee80211_local *local);
  1120. void ieee80211_start_next_roc(struct ieee80211_local *local);
  1121. void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata);
  1122. void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc);
  1123. void ieee80211_sw_roc_work(struct work_struct *work);
  1124. void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
  1125. /* interface handling */
  1126. int ieee80211_iface_init(void);
  1127. void ieee80211_iface_exit(void);
  1128. int ieee80211_if_add(struct ieee80211_local *local, const char *name,
  1129. struct wireless_dev **new_wdev, enum nl80211_iftype type,
  1130. struct vif_params *params);
  1131. int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
  1132. enum nl80211_iftype type);
  1133. void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
  1134. void ieee80211_remove_interfaces(struct ieee80211_local *local);
  1135. void ieee80211_recalc_idle(struct ieee80211_local *local);
  1136. void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
  1137. const int offset);
  1138. int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
  1139. void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
  1140. static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
  1141. {
  1142. return test_bit(SDATA_STATE_RUNNING, &sdata->state);
  1143. }
  1144. /* tx handling */
  1145. void ieee80211_clear_tx_pending(struct ieee80211_local *local);
  1146. void ieee80211_tx_pending(unsigned long data);
  1147. netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
  1148. struct net_device *dev);
  1149. netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
  1150. struct net_device *dev);
  1151. /* HT */
  1152. void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
  1153. struct ieee80211_sta_ht_cap *ht_cap);
  1154. void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
  1155. struct ieee80211_supported_band *sband,
  1156. struct ieee80211_ht_cap *ht_cap_ie,
  1157. struct ieee80211_sta_ht_cap *ht_cap);
  1158. void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
  1159. const u8 *da, u16 tid,
  1160. u16 initiator, u16 reason_code);
  1161. int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
  1162. enum ieee80211_smps_mode smps, const u8 *da,
  1163. const u8 *bssid);
  1164. void ieee80211_request_smps_work(struct work_struct *work);
  1165. void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
  1166. u16 initiator, u16 reason, bool stop);
  1167. void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
  1168. u16 initiator, u16 reason, bool stop);
  1169. void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
  1170. void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
  1171. struct sta_info *sta,
  1172. struct ieee80211_mgmt *mgmt, size_t len);
  1173. void ieee80211_process_addba_resp(struct ieee80211_local *local,
  1174. struct sta_info *sta,
  1175. struct ieee80211_mgmt *mgmt,
  1176. size_t len);
  1177. void ieee80211_process_addba_request(struct ieee80211_local *local,
  1178. struct sta_info *sta,
  1179. struct ieee80211_mgmt *mgmt,
  1180. size_t len);
  1181. int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
  1182. enum ieee80211_back_parties initiator,
  1183. bool tx);
  1184. int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
  1185. enum ieee80211_back_parties initiator,
  1186. bool tx);
  1187. void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
  1188. void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
  1189. void ieee80211_ba_session_work(struct work_struct *work);
  1190. void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
  1191. void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
  1192. u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
  1193. /* Spectrum management */
  1194. void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
  1195. struct ieee80211_mgmt *mgmt,
  1196. size_t len);
  1197. /* Suspend/resume and hw reconfiguration */
  1198. int ieee80211_reconfig(struct ieee80211_local *local);
  1199. void ieee80211_stop_device(struct ieee80211_local *local);
  1200. int __ieee80211_suspend(struct ieee80211_hw *hw,
  1201. struct cfg80211_wowlan *wowlan);
  1202. static inline int __ieee80211_resume(struct ieee80211_hw *hw)
  1203. {
  1204. struct ieee80211_local *local = hw_to_local(hw);
  1205. WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
  1206. "%s: resume with hardware scan still in progress\n",
  1207. wiphy_name(hw->wiphy));
  1208. return ieee80211_reconfig(hw_to_local(hw));
  1209. }
  1210. /* utility functions/constants */
  1211. extern void *mac80211_wiphy_privid; /* for wiphy privid */
  1212. u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
  1213. enum nl80211_iftype type);
  1214. int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
  1215. int rate, int erp, int short_preamble);
  1216. void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
  1217. struct ieee80211_hdr *hdr, const u8 *tsc,
  1218. gfp_t gfp);
  1219. void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
  1220. bool bss_notify);
  1221. void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
  1222. enum ieee80211_band band);
  1223. void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
  1224. struct sk_buff *skb, int tid,
  1225. enum ieee80211_band band);
  1226. static inline void
  1227. ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
  1228. struct sk_buff *skb, int tid,
  1229. enum ieee80211_band band)
  1230. {
  1231. rcu_read_lock();
  1232. __ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
  1233. rcu_read_unlock();
  1234. }
  1235. static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
  1236. struct sk_buff *skb, int tid)
  1237. {
  1238. struct ieee80211_chanctx_conf *chanctx_conf;
  1239. rcu_read_lock();
  1240. chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
  1241. if (WARN_ON(!chanctx_conf)) {
  1242. rcu_read_unlock();
  1243. kfree_skb(skb);
  1244. return;
  1245. }
  1246. __ieee80211_tx_skb_tid_band(sdata, skb, tid,
  1247. chanctx_conf->channel->band);
  1248. rcu_read_unlock();
  1249. }
  1250. static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
  1251. struct sk_buff *skb)
  1252. {
  1253. /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
  1254. ieee80211_tx_skb_tid(sdata, skb, 7);
  1255. }
  1256. void ieee802_11_parse_elems(u8 *start, size_t len,
  1257. struct ieee802_11_elems *elems);
  1258. u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
  1259. struct ieee802_11_elems *elems,
  1260. u64 filter, u32 crc);
  1261. u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
  1262. enum ieee80211_band band);
  1263. void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
  1264. void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
  1265. void ieee80211_dynamic_ps_timer(unsigned long data);
  1266. void ieee80211_send_nullfunc(struct ieee80211_local *local,
  1267. struct ieee80211_sub_if_data *sdata,
  1268. int powersave);
  1269. void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
  1270. struct ieee80211_hdr *hdr);
  1271. void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
  1272. struct ieee80211_hdr *hdr, bool ack);
  1273. void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
  1274. enum queue_stop_reason reason);
  1275. void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
  1276. enum queue_stop_reason reason);
  1277. void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
  1278. enum queue_stop_reason reason);
  1279. void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
  1280. enum queue_stop_reason reason);
  1281. void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
  1282. void ieee80211_add_pending_skb(struct ieee80211_local *local,
  1283. struct sk_buff *skb);
  1284. void ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
  1285. struct sk_buff_head *skbs,
  1286. void (*fn)(void *data), void *data);
  1287. static inline void ieee80211_add_pending_skbs(struct ieee80211_local *local,
  1288. struct sk_buff_head *skbs)
  1289. {
  1290. ieee80211_add_pending_skbs_fn(local, skbs, NULL, NULL);
  1291. }
  1292. void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
  1293. u16 transaction, u16 auth_alg, u16 status,
  1294. u8 *extra, size_t extra_len, const u8 *bssid,
  1295. const u8 *da, const u8 *key, u8 key_len, u8 key_idx);
  1296. void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
  1297. const u8 *bssid, u16 stype, u16 reason,
  1298. bool send_frame, u8 *frame_buf);
  1299. int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
  1300. const u8 *ie, size_t ie_len,
  1301. enum ieee80211_band band, u32 rate_mask,
  1302. u8 channel);
  1303. struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
  1304. u8 *dst, u32 ratemask,
  1305. struct ieee80211_channel *chan,
  1306. const u8 *ssid, size_t ssid_len,
  1307. const u8 *ie, size_t ie_len,
  1308. bool directed);
  1309. void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
  1310. const u8 *ssid, size_t ssid_len,
  1311. const u8 *ie, size_t ie_len,
  1312. u32 ratemask, bool directed, bool no_cck,
  1313. struct ieee80211_channel *channel, bool scan);
  1314. void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
  1315. const size_t supp_rates_len,
  1316. const u8 *supp_rates);
  1317. u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
  1318. struct ieee802_11_elems *elems,
  1319. enum ieee80211_band band, u32 *basic_rates);
  1320. int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
  1321. enum ieee80211_smps_mode smps_mode);
  1322. void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
  1323. size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
  1324. const u8 *ids, int n_ids, size_t offset);
  1325. size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
  1326. u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
  1327. u16 cap);
  1328. u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
  1329. struct ieee80211_channel *channel,
  1330. enum nl80211_channel_type channel_type,
  1331. u16 prot_mode);
  1332. u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
  1333. u32 cap);
  1334. int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
  1335. struct sk_buff *skb, bool need_basic,
  1336. enum ieee80211_band band);
  1337. int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
  1338. struct sk_buff *skb, bool need_basic,
  1339. enum ieee80211_band band);
  1340. /* channel management */
  1341. enum nl80211_channel_type
  1342. ieee80211_ht_oper_to_channel_type(struct ieee80211_ht_operation *ht_oper);
  1343. int __must_check
  1344. ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
  1345. struct ieee80211_channel *channel,
  1346. enum nl80211_channel_type channel_type,
  1347. enum ieee80211_chanctx_mode mode);
  1348. void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
  1349. void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
  1350. struct ieee80211_chanctx *chanctx);
  1351. #ifdef CONFIG_MAC80211_NOINLINE
  1352. #define debug_noinline noinline
  1353. #else
  1354. #define debug_noinline
  1355. #endif
  1356. #endif /* IEEE80211_I_H */