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b481de9c ZY |
1 | /****************************************************************************** |
2 | * | |
51368bf7 | 3 | * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. |
b481de9c ZY |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
17 | * | |
18 | * The full GNU General Public License is included in this distribution in the | |
19 | * file called LICENSE. | |
20 | * | |
21 | * Contact Information: | |
759ef89f | 22 | * Intel Linux Wireless <ilw@linux.intel.com> |
b481de9c ZY |
23 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
24 | * | |
25 | *****************************************************************************/ | |
26 | ||
e227ceac TW |
27 | #ifndef __iwl_agn_rs_h__ |
28 | #define __iwl_agn_rs_h__ | |
b481de9c | 29 | |
7bd9897e EG |
30 | #include <net/mac80211.h> |
31 | ||
61e98de8 | 32 | #include "iwl-config.h" |
7bd9897e | 33 | |
1023fdc4 JB |
34 | #include "commands.h" |
35 | ||
1826dcc0 | 36 | struct iwl_rate_info { |
77626355 BC |
37 | u8 plcp; /* uCode API: IWL_RATE_6M_PLCP, etc. */ |
38 | u8 plcp_siso; /* uCode API: IWL_RATE_SISO_6M_PLCP, etc. */ | |
fde0db31 GC |
39 | u8 plcp_mimo2; /* uCode API: IWL_RATE_MIMO2_6M_PLCP, etc. */ |
40 | u8 plcp_mimo3; /* uCode API: IWL_RATE_MIMO3_6M_PLCP, etc. */ | |
77626355 | 41 | u8 ieee; /* MAC header: IWL_RATE_6M_IEEE, etc. */ |
b481de9c ZY |
42 | u8 prev_ieee; /* previous rate in IEEE speeds */ |
43 | u8 next_ieee; /* next rate in IEEE speeds */ | |
44 | u8 prev_rs; /* previous rate used in rs algo */ | |
45 | u8 next_rs; /* next rate used in rs algo */ | |
46 | u8 prev_rs_tgg; /* previous rate used in TGG rs algo */ | |
47 | u8 next_rs_tgg; /* next rate used in TGG rs algo */ | |
48 | }; | |
49 | ||
9fbab516 BC |
50 | /* |
51 | * These serve as indexes into | |
1826dcc0 | 52 | * struct iwl_rate_info iwl_rates[IWL_RATE_COUNT]; |
9fbab516 | 53 | */ |
b481de9c ZY |
54 | enum { |
55 | IWL_RATE_1M_INDEX = 0, | |
56 | IWL_RATE_2M_INDEX, | |
57 | IWL_RATE_5M_INDEX, | |
58 | IWL_RATE_11M_INDEX, | |
59 | IWL_RATE_6M_INDEX, | |
60 | IWL_RATE_9M_INDEX, | |
61 | IWL_RATE_12M_INDEX, | |
62 | IWL_RATE_18M_INDEX, | |
63 | IWL_RATE_24M_INDEX, | |
64 | IWL_RATE_36M_INDEX, | |
65 | IWL_RATE_48M_INDEX, | |
66 | IWL_RATE_54M_INDEX, | |
67 | IWL_RATE_60M_INDEX, | |
fde0db31 | 68 | IWL_RATE_COUNT, /*FIXME:RS:change to IWL_RATE_INDEX_COUNT,*/ |
5027309b | 69 | IWL_RATE_COUNT_LEGACY = IWL_RATE_COUNT - 1, /* Excluding 60M */ |
b481de9c | 70 | IWL_RATE_INVM_INDEX = IWL_RATE_COUNT, |
fde0db31 | 71 | IWL_RATE_INVALID = IWL_RATE_COUNT, |
b481de9c ZY |
72 | }; |
73 | ||
d9829a67 SO |
74 | enum { |
75 | IWL_RATE_6M_INDEX_TABLE = 0, | |
76 | IWL_RATE_9M_INDEX_TABLE, | |
77 | IWL_RATE_12M_INDEX_TABLE, | |
78 | IWL_RATE_18M_INDEX_TABLE, | |
79 | IWL_RATE_24M_INDEX_TABLE, | |
80 | IWL_RATE_36M_INDEX_TABLE, | |
81 | IWL_RATE_48M_INDEX_TABLE, | |
82 | IWL_RATE_54M_INDEX_TABLE, | |
83 | IWL_RATE_1M_INDEX_TABLE, | |
84 | IWL_RATE_2M_INDEX_TABLE, | |
85 | IWL_RATE_5M_INDEX_TABLE, | |
86 | IWL_RATE_11M_INDEX_TABLE, | |
87 | IWL_RATE_INVM_INDEX_TABLE = IWL_RATE_INVM_INDEX - 1, | |
88 | }; | |
89 | ||
b481de9c ZY |
90 | enum { |
91 | IWL_FIRST_OFDM_RATE = IWL_RATE_6M_INDEX, | |
92 | IWL_LAST_OFDM_RATE = IWL_RATE_60M_INDEX, | |
93 | IWL_FIRST_CCK_RATE = IWL_RATE_1M_INDEX, | |
94 | IWL_LAST_CCK_RATE = IWL_RATE_11M_INDEX, | |
95 | }; | |
96 | ||
97 | /* #define vs. enum to keep from defaulting to 'large integer' */ | |
8a1b0245 RC |
98 | #define IWL_RATE_6M_MASK (1 << IWL_RATE_6M_INDEX) |
99 | #define IWL_RATE_9M_MASK (1 << IWL_RATE_9M_INDEX) | |
100 | #define IWL_RATE_12M_MASK (1 << IWL_RATE_12M_INDEX) | |
101 | #define IWL_RATE_18M_MASK (1 << IWL_RATE_18M_INDEX) | |
102 | #define IWL_RATE_24M_MASK (1 << IWL_RATE_24M_INDEX) | |
103 | #define IWL_RATE_36M_MASK (1 << IWL_RATE_36M_INDEX) | |
104 | #define IWL_RATE_48M_MASK (1 << IWL_RATE_48M_INDEX) | |
105 | #define IWL_RATE_54M_MASK (1 << IWL_RATE_54M_INDEX) | |
106 | #define IWL_RATE_60M_MASK (1 << IWL_RATE_60M_INDEX) | |
107 | #define IWL_RATE_1M_MASK (1 << IWL_RATE_1M_INDEX) | |
108 | #define IWL_RATE_2M_MASK (1 << IWL_RATE_2M_INDEX) | |
109 | #define IWL_RATE_5M_MASK (1 << IWL_RATE_5M_INDEX) | |
110 | #define IWL_RATE_11M_MASK (1 << IWL_RATE_11M_INDEX) | |
b481de9c | 111 | |
e227ceac | 112 | /* uCode API values for legacy bit rates, both OFDM and CCK */ |
b481de9c ZY |
113 | enum { |
114 | IWL_RATE_6M_PLCP = 13, | |
115 | IWL_RATE_9M_PLCP = 15, | |
116 | IWL_RATE_12M_PLCP = 5, | |
117 | IWL_RATE_18M_PLCP = 7, | |
118 | IWL_RATE_24M_PLCP = 9, | |
119 | IWL_RATE_36M_PLCP = 11, | |
120 | IWL_RATE_48M_PLCP = 1, | |
121 | IWL_RATE_54M_PLCP = 3, | |
fde0db31 | 122 | IWL_RATE_60M_PLCP = 3,/*FIXME:RS:should be removed*/ |
b481de9c ZY |
123 | IWL_RATE_1M_PLCP = 10, |
124 | IWL_RATE_2M_PLCP = 20, | |
125 | IWL_RATE_5M_PLCP = 55, | |
126 | IWL_RATE_11M_PLCP = 110, | |
fde0db31 GC |
127 | /*FIXME:RS:change to IWL_RATE_LEGACY_??M_PLCP */ |
128 | /*FIXME:RS:add IWL_RATE_LEGACY_INVM_PLCP = 0,*/ | |
b481de9c ZY |
129 | }; |
130 | ||
e227ceac | 131 | /* uCode API values for OFDM high-throughput (HT) bit rates */ |
b481de9c ZY |
132 | enum { |
133 | IWL_RATE_SISO_6M_PLCP = 0, | |
134 | IWL_RATE_SISO_12M_PLCP = 1, | |
135 | IWL_RATE_SISO_18M_PLCP = 2, | |
136 | IWL_RATE_SISO_24M_PLCP = 3, | |
137 | IWL_RATE_SISO_36M_PLCP = 4, | |
138 | IWL_RATE_SISO_48M_PLCP = 5, | |
139 | IWL_RATE_SISO_54M_PLCP = 6, | |
140 | IWL_RATE_SISO_60M_PLCP = 7, | |
fde0db31 GC |
141 | IWL_RATE_MIMO2_6M_PLCP = 0x8, |
142 | IWL_RATE_MIMO2_12M_PLCP = 0x9, | |
143 | IWL_RATE_MIMO2_18M_PLCP = 0xa, | |
144 | IWL_RATE_MIMO2_24M_PLCP = 0xb, | |
145 | IWL_RATE_MIMO2_36M_PLCP = 0xc, | |
146 | IWL_RATE_MIMO2_48M_PLCP = 0xd, | |
147 | IWL_RATE_MIMO2_54M_PLCP = 0xe, | |
148 | IWL_RATE_MIMO2_60M_PLCP = 0xf, | |
149 | IWL_RATE_MIMO3_6M_PLCP = 0x10, | |
150 | IWL_RATE_MIMO3_12M_PLCP = 0x11, | |
151 | IWL_RATE_MIMO3_18M_PLCP = 0x12, | |
152 | IWL_RATE_MIMO3_24M_PLCP = 0x13, | |
153 | IWL_RATE_MIMO3_36M_PLCP = 0x14, | |
154 | IWL_RATE_MIMO3_48M_PLCP = 0x15, | |
155 | IWL_RATE_MIMO3_54M_PLCP = 0x16, | |
156 | IWL_RATE_MIMO3_60M_PLCP = 0x17, | |
b481de9c | 157 | IWL_RATE_SISO_INVM_PLCP, |
fde0db31 GC |
158 | IWL_RATE_MIMO2_INVM_PLCP = IWL_RATE_SISO_INVM_PLCP, |
159 | IWL_RATE_MIMO3_INVM_PLCP = IWL_RATE_SISO_INVM_PLCP, | |
b481de9c ZY |
160 | }; |
161 | ||
77626355 | 162 | /* MAC header values for bit rates */ |
b481de9c ZY |
163 | enum { |
164 | IWL_RATE_6M_IEEE = 12, | |
165 | IWL_RATE_9M_IEEE = 18, | |
166 | IWL_RATE_12M_IEEE = 24, | |
167 | IWL_RATE_18M_IEEE = 36, | |
168 | IWL_RATE_24M_IEEE = 48, | |
169 | IWL_RATE_36M_IEEE = 72, | |
170 | IWL_RATE_48M_IEEE = 96, | |
171 | IWL_RATE_54M_IEEE = 108, | |
172 | IWL_RATE_60M_IEEE = 120, | |
173 | IWL_RATE_1M_IEEE = 2, | |
174 | IWL_RATE_2M_IEEE = 4, | |
175 | IWL_RATE_5M_IEEE = 11, | |
176 | IWL_RATE_11M_IEEE = 22, | |
177 | }; | |
178 | ||
8a1b0245 | 179 | #define IWL_RATES_MASK ((1 << IWL_RATE_COUNT) - 1) |
b481de9c ZY |
180 | |
181 | #define IWL_INVALID_VALUE -1 | |
182 | ||
183 | #define IWL_MIN_RSSI_VAL -100 | |
184 | #define IWL_MAX_RSSI_VAL 0 | |
185 | ||
77626355 BC |
186 | /* These values specify how many Tx frame attempts before |
187 | * searching for a new modulation mode */ | |
b481de9c ZY |
188 | #define IWL_LEGACY_FAILURE_LIMIT 160 |
189 | #define IWL_LEGACY_SUCCESS_LIMIT 480 | |
190 | #define IWL_LEGACY_TABLE_COUNT 160 | |
191 | ||
192 | #define IWL_NONE_LEGACY_FAILURE_LIMIT 400 | |
193 | #define IWL_NONE_LEGACY_SUCCESS_LIMIT 4500 | |
194 | #define IWL_NONE_LEGACY_TABLE_COUNT 1500 | |
195 | ||
77626355 BC |
196 | /* Success ratio (ACKed / attempted tx frames) values (perfect is 128 * 100) */ |
197 | #define IWL_RS_GOOD_RATIO 12800 /* 100% */ | |
198 | #define IWL_RATE_SCALE_SWITCH 10880 /* 85% */ | |
199 | #define IWL_RATE_HIGH_TH 10880 /* 85% */ | |
8fe72311 | 200 | #define IWL_RATE_INCREASE_TH 6400 /* 50% */ |
77626355 | 201 | #define IWL_RATE_DECREASE_TH 1920 /* 15% */ |
b481de9c | 202 | |
77626355 | 203 | /* possible actions when in legacy mode */ |
3110bef7 GC |
204 | #define IWL_LEGACY_SWITCH_ANTENNA1 0 |
205 | #define IWL_LEGACY_SWITCH_ANTENNA2 1 | |
206 | #define IWL_LEGACY_SWITCH_SISO 2 | |
207 | #define IWL_LEGACY_SWITCH_MIMO2_AB 3 | |
208 | #define IWL_LEGACY_SWITCH_MIMO2_AC 4 | |
209 | #define IWL_LEGACY_SWITCH_MIMO2_BC 5 | |
584a0f00 | 210 | #define IWL_LEGACY_SWITCH_MIMO3_ABC 6 |
77626355 BC |
211 | |
212 | /* possible actions when in siso mode */ | |
3110bef7 GC |
213 | #define IWL_SISO_SWITCH_ANTENNA1 0 |
214 | #define IWL_SISO_SWITCH_ANTENNA2 1 | |
215 | #define IWL_SISO_SWITCH_MIMO2_AB 2 | |
216 | #define IWL_SISO_SWITCH_MIMO2_AC 3 | |
217 | #define IWL_SISO_SWITCH_MIMO2_BC 4 | |
218 | #define IWL_SISO_SWITCH_GI 5 | |
584a0f00 WYG |
219 | #define IWL_SISO_SWITCH_MIMO3_ABC 6 |
220 | ||
b481de9c | 221 | |
77626355 | 222 | /* possible actions when in mimo mode */ |
3110bef7 GC |
223 | #define IWL_MIMO2_SWITCH_ANTENNA1 0 |
224 | #define IWL_MIMO2_SWITCH_ANTENNA2 1 | |
225 | #define IWL_MIMO2_SWITCH_SISO_A 2 | |
226 | #define IWL_MIMO2_SWITCH_SISO_B 3 | |
227 | #define IWL_MIMO2_SWITCH_SISO_C 4 | |
228 | #define IWL_MIMO2_SWITCH_GI 5 | |
584a0f00 WYG |
229 | #define IWL_MIMO2_SWITCH_MIMO3_ABC 6 |
230 | ||
231 | ||
232 | /* possible actions when in mimo3 mode */ | |
233 | #define IWL_MIMO3_SWITCH_ANTENNA1 0 | |
234 | #define IWL_MIMO3_SWITCH_ANTENNA2 1 | |
235 | #define IWL_MIMO3_SWITCH_SISO_A 2 | |
236 | #define IWL_MIMO3_SWITCH_SISO_B 3 | |
237 | #define IWL_MIMO3_SWITCH_SISO_C 4 | |
238 | #define IWL_MIMO3_SWITCH_MIMO2_AB 5 | |
239 | #define IWL_MIMO3_SWITCH_MIMO2_AC 6 | |
240 | #define IWL_MIMO3_SWITCH_MIMO2_BC 7 | |
241 | #define IWL_MIMO3_SWITCH_GI 8 | |
242 | ||
243 | ||
d6e93399 MA |
244 | #define IWL_MAX_11N_MIMO3_SEARCH IWL_MIMO3_SWITCH_GI |
245 | #define IWL_MAX_SEARCH IWL_MIMO2_SWITCH_MIMO3_ABC | |
fde0db31 | 246 | |
a96a27f9 | 247 | /*FIXME:RS:add possible actions for MIMO3*/ |
fde0db31 | 248 | |
77626355 BC |
249 | #define IWL_ACTION_LIMIT 3 /* # possible actions */ |
250 | ||
251 | #define LQ_SIZE 2 /* 2 mode tables: "Active" and "Search" */ | |
b481de9c | 252 | |
0c11b4de RR |
253 | /* load per tid defines for A-MPDU activation */ |
254 | #define IWL_AGG_TPT_THREHOLD 0 | |
255 | #define IWL_AGG_LOAD_THRESHOLD 10 | |
256 | #define IWL_AGG_ALL_TID 0xff | |
257 | #define TID_QUEUE_CELL_SPACING 50 /*mS */ | |
258 | #define TID_QUEUE_MAX_SIZE 20 | |
259 | #define TID_ROUND_VALUE 5 /* mS */ | |
0c11b4de RR |
260 | |
261 | #define TID_MAX_TIME_DIFF ((TID_QUEUE_MAX_SIZE - 1) * TID_QUEUE_CELL_SPACING) | |
262 | #define TIME_WRAP_AROUND(x, y) (((y) > (x)) ? (y) - (x) : (0-(x)) + (y)) | |
263 | ||
1826dcc0 | 264 | extern const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT]; |
b481de9c | 265 | |
fde0db31 | 266 | enum iwl_table_type { |
b481de9c | 267 | LQ_NONE, |
77626355 | 268 | LQ_G, /* legacy types */ |
b481de9c | 269 | LQ_A, |
77626355 | 270 | LQ_SISO, /* high-throughput types */ |
fde0db31 GC |
271 | LQ_MIMO2, |
272 | LQ_MIMO3, | |
b481de9c ZY |
273 | LQ_MAX, |
274 | }; | |
275 | ||
81cd110d | 276 | #define is_legacy(tbl) (((tbl) == LQ_G) || ((tbl) == LQ_A)) |
fde0db31 GC |
277 | #define is_siso(tbl) ((tbl) == LQ_SISO) |
278 | #define is_mimo2(tbl) ((tbl) == LQ_MIMO2) | |
279 | #define is_mimo3(tbl) ((tbl) == LQ_MIMO3) | |
280 | #define is_mimo(tbl) (is_mimo2(tbl) || is_mimo3(tbl)) | |
81cd110d | 281 | #define is_Ht(tbl) (is_siso(tbl) || is_mimo(tbl)) |
fde0db31 GC |
282 | #define is_a_band(tbl) ((tbl) == LQ_A) |
283 | #define is_g_and(tbl) ((tbl) == LQ_G) | |
284 | ||
12b96817 WYG |
285 | #define IWL_MAX_MCS_DISPLAY_SIZE 12 |
286 | ||
287 | struct iwl_rate_mcs_info { | |
288 | char mbps[IWL_MAX_MCS_DISPLAY_SIZE]; | |
289 | char mcs[IWL_MAX_MCS_DISPLAY_SIZE]; | |
290 | }; | |
291 | ||
cc1282f6 RC |
292 | /** |
293 | * struct iwl_rate_scale_data -- tx success history for one rate | |
294 | */ | |
295 | struct iwl_rate_scale_data { | |
296 | u64 data; /* bitmap of successful frames */ | |
297 | s32 success_counter; /* number of frames successful */ | |
298 | s32 success_ratio; /* per-cent * 128 */ | |
299 | s32 counter; /* number of frames attempted */ | |
300 | s32 average_tpt; /* success ratio * expected throughput */ | |
301 | unsigned long stamp; | |
302 | }; | |
303 | ||
304 | /** | |
305 | * struct iwl_scale_tbl_info -- tx params and success history for all rates | |
306 | * | |
307 | * There are two of these in struct iwl_lq_sta, | |
308 | * one for "active", and one for "search". | |
309 | */ | |
310 | struct iwl_scale_tbl_info { | |
311 | enum iwl_table_type lq_type; | |
312 | u8 ant_type; | |
313 | u8 is_SGI; /* 1 = short guard interval */ | |
314 | u8 is_ht40; /* 1 = 40 MHz channel width */ | |
315 | u8 is_dup; /* 1 = duplicated data streams */ | |
316 | u8 action; /* change modulation; IWL_[LEGACY/SISO/MIMO]_SWITCH_* */ | |
317 | u8 max_search; /* maximun number of tables we can search */ | |
a34529e8 | 318 | const u16 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */ |
cc1282f6 RC |
319 | u32 current_rate; /* rate_n_flags, uCode API format */ |
320 | struct iwl_rate_scale_data win[IWL_RATE_COUNT]; /* rate histories */ | |
321 | }; | |
322 | ||
323 | struct iwl_traffic_load { | |
324 | unsigned long time_stamp; /* age of the oldest statistics */ | |
325 | u32 packet_count[TID_QUEUE_MAX_SIZE]; /* packet count in this time | |
326 | * slice */ | |
327 | u32 total; /* total num of packets during the | |
328 | * last TID_MAX_TIME_DIFF */ | |
329 | u8 queue_count; /* number of queues that has | |
330 | * been used since the last cleanup */ | |
331 | u8 head; /* start of the circular buffer */ | |
332 | }; | |
333 | ||
334 | /** | |
335 | * struct iwl_lq_sta -- driver's rate scaling private structure | |
336 | * | |
337 | * Pointer to this gets passed back and forth between driver and mac80211. | |
338 | */ | |
339 | struct iwl_lq_sta { | |
340 | u8 active_tbl; /* index of active table, range 0-1 */ | |
341 | u8 enable_counter; /* indicates HT mode */ | |
342 | u8 stay_in_tbl; /* 1: disallow, 0: allow search for new mode */ | |
343 | u8 search_better_tbl; /* 1: currently trying alternate mode */ | |
344 | s32 last_tpt; | |
345 | ||
346 | /* The following determine when to search for a new mode */ | |
347 | u32 table_count_limit; | |
348 | u32 max_failure_limit; /* # failed frames before new search */ | |
349 | u32 max_success_limit; /* # successful frames before new search */ | |
350 | u32 table_count; | |
351 | u32 total_failed; /* total failed frames, any/all rates */ | |
352 | u32 total_success; /* total successful frames, any/all rates */ | |
353 | u64 flush_timer; /* time staying in mode before new search */ | |
354 | ||
355 | u8 action_counter; /* # mode-switch actions tried */ | |
356 | u8 is_green; | |
357 | u8 is_dup; | |
358 | enum ieee80211_band band; | |
cc1282f6 RC |
359 | |
360 | /* The following are bitmaps of rates; IWL_RATE_6M_MASK, etc. */ | |
361 | u32 supp_rates; | |
362 | u16 active_legacy_rate; | |
363 | u16 active_siso_rate; | |
364 | u16 active_mimo2_rate; | |
365 | u16 active_mimo3_rate; | |
cc1282f6 RC |
366 | s8 max_rate_idx; /* Max rate set by user */ |
367 | u8 missed_rate_counter; | |
368 | ||
369 | struct iwl_link_quality_cmd lq; | |
370 | struct iwl_scale_tbl_info lq_info[LQ_SIZE]; /* "active", "search" */ | |
a8448553 | 371 | struct iwl_traffic_load load[IWL_MAX_TID_COUNT]; |
cc1282f6 RC |
372 | u8 tx_agg_tid_en; |
373 | #ifdef CONFIG_MAC80211_DEBUGFS | |
374 | struct dentry *rs_sta_dbgfs_scale_table_file; | |
375 | struct dentry *rs_sta_dbgfs_stats_table_file; | |
376 | struct dentry *rs_sta_dbgfs_rate_scale_data_file; | |
377 | struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file; | |
378 | u32 dbg_fixed_rate; | |
379 | #endif | |
380 | struct iwl_priv *drv; | |
381 | ||
382 | /* used to be in sta_info */ | |
383 | int last_txrate_idx; | |
384 | /* last tx rate_n_flags */ | |
385 | u32 last_rate_n_flags; | |
386 | /* packets destined for this STA are aggregated */ | |
387 | u8 is_agg; | |
290f599c JB |
388 | /* BT traffic this sta was last updated in */ |
389 | u8 last_bt_traffic; | |
cc1282f6 RC |
390 | }; |
391 | ||
5d664a41 TW |
392 | static inline u8 first_antenna(u8 mask) |
393 | { | |
394 | if (mask & ANT_A) | |
395 | return ANT_A; | |
396 | if (mask & ANT_B) | |
397 | return ANT_B; | |
398 | return ANT_C; | |
399 | } | |
400 | ||
401 | ||
fe6b23dd | 402 | /* Initialize station's rate scaling information after adding station */ |
b3818394 JP |
403 | void iwl_rs_rate_init(struct iwl_priv *priv, struct ieee80211_sta *sta, |
404 | u8 sta_id); | |
fe6b23dd | 405 | |
b481de9c | 406 | /** |
eb4779c4 | 407 | * iwl_rate_control_register - Register the rate control algorithm callbacks |
b481de9c ZY |
408 | * |
409 | * Since the rate control algorithm is hardware specific, there is no need | |
410 | * or reason to place it as a stand alone module. The driver can call | |
eb4779c4 | 411 | * iwl_rate_control_register in order to register the rate control callbacks |
b481de9c ZY |
412 | * with the mac80211 subsystem. This should be performed prior to calling |
413 | * ieee80211_register_hw | |
414 | * | |
415 | */ | |
b3818394 | 416 | int iwlagn_rate_control_register(void); |
b481de9c ZY |
417 | |
418 | /** | |
eb4779c4 | 419 | * iwl_rate_control_unregister - Unregister the rate control callbacks |
b481de9c ZY |
420 | * |
421 | * This should be called after calling ieee80211_unregister_hw, but before | |
422 | * the driver is unloaded. | |
423 | */ | |
b3818394 | 424 | void iwlagn_rate_control_unregister(void); |
b481de9c | 425 | |
e227ceac | 426 | #endif /* __iwl_agn__rs__ */ |