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cd2c5486 BR |
1 | /*- |
2 | * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting | |
3 | * Copyright (c) 2004-2005 Atheros Communications, Inc. | |
4 | * Copyright (c) 2006 Devicescape Software, Inc. | |
5 | * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> | |
6 | * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu> | |
7 | * Copyright (c) 2010 Bruno Randolf <br1@einfach.org> | |
8 | * | |
9 | * All rights reserved. | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
18 | * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any | |
19 | * redistribution must be conditioned upon including a substantially | |
20 | * similar Disclaimer requirement for further binary redistribution. | |
21 | * 3. Neither the names of the above-listed copyright holders nor the names | |
22 | * of any contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * Alternatively, this software may be distributed under the terms of the | |
26 | * GNU General Public License ("GPL") version 2 as published by the Free | |
27 | * Software Foundation. | |
28 | * | |
29 | * NO WARRANTY | |
30 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
31 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
32 | * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY | |
33 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL | |
34 | * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, | |
35 | * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
36 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
37 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER | |
38 | * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
39 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
40 | * THE POSSIBILITY OF SUCH DAMAGES. | |
41 | * | |
42 | */ | |
43 | ||
931be260 | 44 | #include <net/mac80211.h> |
cd2c5486 BR |
45 | #include <asm/unaligned.h> |
46 | ||
931be260 | 47 | #include "ath5k.h" |
cd2c5486 BR |
48 | #include "base.h" |
49 | #include "reg.h" | |
50 | ||
cd2c5486 BR |
51 | /********************\ |
52 | * Mac80211 functions * | |
53 | \********************/ | |
54 | ||
7bb45683 | 55 | static void |
cd2c5486 BR |
56 | ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
57 | { | |
e0d687bd | 58 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
59 | u16 qnum = skb_get_queue_mapping(skb); |
60 | ||
e0d687bd | 61 | if (WARN_ON(qnum >= ah->ah_capabilities.cap_queues.q_tx_num)) { |
cd2c5486 | 62 | dev_kfree_skb_any(skb); |
7bb45683 | 63 | return; |
cd2c5486 BR |
64 | } |
65 | ||
e0d687bd | 66 | ath5k_tx_queue(hw, skb, &ah->txqs[qnum]); |
cd2c5486 BR |
67 | } |
68 | ||
69 | ||
cd2c5486 BR |
70 | static int |
71 | ath5k_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
72 | { | |
e0d687bd | 73 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
74 | int ret; |
75 | struct ath5k_vif *avf = (void *)vif->drv_priv; | |
76 | ||
e0d687bd | 77 | mutex_lock(&ah->lock); |
cd2c5486 BR |
78 | |
79 | if ((vif->type == NL80211_IFTYPE_AP || | |
80 | vif->type == NL80211_IFTYPE_ADHOC) | |
e0d687bd | 81 | && (ah->num_ap_vifs + ah->num_adhoc_vifs) >= ATH_BCBUF) { |
cd2c5486 BR |
82 | ret = -ELNRNG; |
83 | goto end; | |
84 | } | |
85 | ||
86 | /* Don't allow other interfaces if one ad-hoc is configured. | |
87 | * TODO: Fix the problems with ad-hoc and multiple other interfaces. | |
88 | * We would need to operate the HW in ad-hoc mode to allow TSF updates | |
89 | * for the IBSS, but this breaks with additional AP or STA interfaces | |
90 | * at the moment. */ | |
e0d687bd PR |
91 | if (ah->num_adhoc_vifs || |
92 | (ah->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) { | |
93 | ATH5K_ERR(ah, "Only one single ad-hoc interface is allowed.\n"); | |
cd2c5486 BR |
94 | ret = -ELNRNG; |
95 | goto end; | |
96 | } | |
97 | ||
98 | switch (vif->type) { | |
99 | case NL80211_IFTYPE_AP: | |
100 | case NL80211_IFTYPE_STATION: | |
101 | case NL80211_IFTYPE_ADHOC: | |
102 | case NL80211_IFTYPE_MESH_POINT: | |
103 | avf->opmode = vif->type; | |
104 | break; | |
105 | default: | |
106 | ret = -EOPNOTSUPP; | |
107 | goto end; | |
108 | } | |
109 | ||
e0d687bd PR |
110 | ah->nvifs++; |
111 | ATH5K_DBG(ah, ATH5K_DEBUG_MODE, "add interface mode %d\n", avf->opmode); | |
cd2c5486 BR |
112 | |
113 | /* Assign the vap/adhoc to a beacon xmit slot. */ | |
114 | if ((avf->opmode == NL80211_IFTYPE_AP) || | |
115 | (avf->opmode == NL80211_IFTYPE_ADHOC) || | |
116 | (avf->opmode == NL80211_IFTYPE_MESH_POINT)) { | |
117 | int slot; | |
118 | ||
e0d687bd PR |
119 | WARN_ON(list_empty(&ah->bcbuf)); |
120 | avf->bbuf = list_first_entry(&ah->bcbuf, struct ath5k_buf, | |
cd2c5486 BR |
121 | list); |
122 | list_del(&avf->bbuf->list); | |
123 | ||
124 | avf->bslot = 0; | |
125 | for (slot = 0; slot < ATH_BCBUF; slot++) { | |
e0d687bd | 126 | if (!ah->bslot[slot]) { |
cd2c5486 BR |
127 | avf->bslot = slot; |
128 | break; | |
129 | } | |
130 | } | |
e0d687bd PR |
131 | BUG_ON(ah->bslot[avf->bslot] != NULL); |
132 | ah->bslot[avf->bslot] = vif; | |
cd2c5486 | 133 | if (avf->opmode == NL80211_IFTYPE_AP) |
e0d687bd | 134 | ah->num_ap_vifs++; |
cd2c5486 | 135 | else if (avf->opmode == NL80211_IFTYPE_ADHOC) |
e0d687bd | 136 | ah->num_adhoc_vifs++; |
cd2c5486 BR |
137 | } |
138 | ||
139 | /* Any MAC address is fine, all others are included through the | |
140 | * filter. | |
141 | */ | |
e0d687bd | 142 | ath5k_hw_set_lladdr(ah, vif->addr); |
cd2c5486 | 143 | |
e0d687bd | 144 | ath5k_update_bssid_mask_and_opmode(ah, vif); |
cd2c5486 BR |
145 | ret = 0; |
146 | end: | |
e0d687bd | 147 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
148 | return ret; |
149 | } | |
150 | ||
151 | ||
152 | static void | |
153 | ath5k_remove_interface(struct ieee80211_hw *hw, | |
154 | struct ieee80211_vif *vif) | |
155 | { | |
e0d687bd | 156 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
157 | struct ath5k_vif *avf = (void *)vif->drv_priv; |
158 | unsigned int i; | |
159 | ||
e0d687bd PR |
160 | mutex_lock(&ah->lock); |
161 | ah->nvifs--; | |
cd2c5486 BR |
162 | |
163 | if (avf->bbuf) { | |
e0d687bd PR |
164 | ath5k_txbuf_free_skb(ah, avf->bbuf); |
165 | list_add_tail(&avf->bbuf->list, &ah->bcbuf); | |
cd2c5486 | 166 | for (i = 0; i < ATH_BCBUF; i++) { |
e0d687bd PR |
167 | if (ah->bslot[i] == vif) { |
168 | ah->bslot[i] = NULL; | |
cd2c5486 BR |
169 | break; |
170 | } | |
171 | } | |
172 | avf->bbuf = NULL; | |
173 | } | |
174 | if (avf->opmode == NL80211_IFTYPE_AP) | |
e0d687bd | 175 | ah->num_ap_vifs--; |
cd2c5486 | 176 | else if (avf->opmode == NL80211_IFTYPE_ADHOC) |
e0d687bd | 177 | ah->num_adhoc_vifs--; |
cd2c5486 | 178 | |
e0d687bd PR |
179 | ath5k_update_bssid_mask_and_opmode(ah, NULL); |
180 | mutex_unlock(&ah->lock); | |
cd2c5486 BR |
181 | } |
182 | ||
183 | ||
184 | /* | |
185 | * TODO: Phy disable/diversity etc | |
186 | */ | |
187 | static int | |
188 | ath5k_config(struct ieee80211_hw *hw, u32 changed) | |
189 | { | |
e0d687bd | 190 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
191 | struct ieee80211_conf *conf = &hw->conf; |
192 | int ret = 0; | |
76a9f6fd | 193 | int i; |
cd2c5486 | 194 | |
e0d687bd | 195 | mutex_lock(&ah->lock); |
cd2c5486 BR |
196 | |
197 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { | |
e0d687bd | 198 | ret = ath5k_chan_set(ah, conf->channel); |
cd2c5486 BR |
199 | if (ret < 0) |
200 | goto unlock; | |
201 | } | |
202 | ||
203 | if ((changed & IEEE80211_CONF_CHANGE_POWER) && | |
e0d687bd PR |
204 | (ah->power_level != conf->power_level)) { |
205 | ah->power_level = conf->power_level; | |
cd2c5486 BR |
206 | |
207 | /* Half dB steps */ | |
208 | ath5k_hw_set_txpower_limit(ah, (conf->power_level * 2)); | |
209 | } | |
210 | ||
76a9f6fd BR |
211 | if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { |
212 | ah->ah_retry_long = conf->long_frame_max_tx_count; | |
213 | ah->ah_retry_short = conf->short_frame_max_tx_count; | |
214 | ||
215 | for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) | |
216 | ath5k_hw_set_tx_retry_limits(ah, i); | |
217 | } | |
218 | ||
cd2c5486 BR |
219 | /* TODO: |
220 | * 1) Move this on config_interface and handle each case | |
221 | * separately eg. when we have only one STA vif, use | |
222 | * AR5K_ANTMODE_SINGLE_AP | |
223 | * | |
224 | * 2) Allow the user to change antenna mode eg. when only | |
225 | * one antenna is present | |
226 | * | |
227 | * 3) Allow the user to set default/tx antenna when possible | |
228 | * | |
229 | * 4) Default mode should handle 90% of the cases, together | |
230 | * with fixed a/b and single AP modes we should be able to | |
231 | * handle 99%. Sectored modes are extreme cases and i still | |
232 | * haven't found a usage for them. If we decide to support them, | |
233 | * then we must allow the user to set how many tx antennas we | |
234 | * have available | |
235 | */ | |
236 | ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode); | |
237 | ||
238 | unlock: | |
e0d687bd | 239 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
240 | return ret; |
241 | } | |
242 | ||
243 | ||
244 | static void | |
245 | ath5k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
246 | struct ieee80211_bss_conf *bss_conf, u32 changes) | |
247 | { | |
248 | struct ath5k_vif *avf = (void *)vif->drv_priv; | |
e0d687bd | 249 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
250 | struct ath_common *common = ath5k_hw_common(ah); |
251 | unsigned long flags; | |
252 | ||
e0d687bd | 253 | mutex_lock(&ah->lock); |
cd2c5486 BR |
254 | |
255 | if (changes & BSS_CHANGED_BSSID) { | |
256 | /* Cache for later use during resets */ | |
257 | memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); | |
258 | common->curaid = 0; | |
259 | ath5k_hw_set_bssid(ah); | |
260 | mmiowb(); | |
261 | } | |
262 | ||
263 | if (changes & BSS_CHANGED_BEACON_INT) | |
e0d687bd | 264 | ah->bintval = bss_conf->beacon_int; |
cd2c5486 | 265 | |
b1ad1b6f FF |
266 | if (changes & BSS_CHANGED_ERP_SLOT) { |
267 | int slot_time; | |
268 | ||
269 | ah->ah_short_slot = bss_conf->use_short_slot; | |
270 | slot_time = ath5k_hw_get_default_slottime(ah) + | |
271 | 3 * ah->ah_coverage_class; | |
272 | ath5k_hw_set_ifs_intervals(ah, slot_time); | |
273 | } | |
274 | ||
cd2c5486 BR |
275 | if (changes & BSS_CHANGED_ASSOC) { |
276 | avf->assoc = bss_conf->assoc; | |
277 | if (bss_conf->assoc) | |
e0d687bd | 278 | ah->assoc = bss_conf->assoc; |
cd2c5486 | 279 | else |
e0d687bd | 280 | ah->assoc = ath5k_any_vif_assoc(ah); |
cd2c5486 | 281 | |
e0d687bd PR |
282 | if (ah->opmode == NL80211_IFTYPE_STATION) |
283 | ath5k_set_beacon_filter(hw, ah->assoc); | |
284 | ath5k_hw_set_ledstate(ah, ah->assoc ? | |
cd2c5486 BR |
285 | AR5K_LED_ASSOC : AR5K_LED_INIT); |
286 | if (bss_conf->assoc) { | |
e0d687bd | 287 | ATH5K_DBG(ah, ATH5K_DEBUG_ANY, |
cd2c5486 BR |
288 | "Bss Info ASSOC %d, bssid: %pM\n", |
289 | bss_conf->aid, common->curbssid); | |
290 | common->curaid = bss_conf->aid; | |
291 | ath5k_hw_set_bssid(ah); | |
292 | /* Once ANI is available you would start it here */ | |
293 | } | |
294 | } | |
295 | ||
296 | if (changes & BSS_CHANGED_BEACON) { | |
e0d687bd | 297 | spin_lock_irqsave(&ah->block, flags); |
cd2c5486 | 298 | ath5k_beacon_update(hw, vif); |
e0d687bd | 299 | spin_unlock_irqrestore(&ah->block, flags); |
cd2c5486 BR |
300 | } |
301 | ||
302 | if (changes & BSS_CHANGED_BEACON_ENABLED) | |
e0d687bd | 303 | ah->enable_beacon = bss_conf->enable_beacon; |
cd2c5486 BR |
304 | |
305 | if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED | | |
306 | BSS_CHANGED_BEACON_INT)) | |
e0d687bd | 307 | ath5k_beacon_config(ah); |
cd2c5486 | 308 | |
e0d687bd | 309 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
310 | } |
311 | ||
312 | ||
313 | static u64 | |
314 | ath5k_prepare_multicast(struct ieee80211_hw *hw, | |
315 | struct netdev_hw_addr_list *mc_list) | |
316 | { | |
317 | u32 mfilt[2], val; | |
318 | u8 pos; | |
319 | struct netdev_hw_addr *ha; | |
320 | ||
321 | mfilt[0] = 0; | |
322 | mfilt[1] = 1; | |
323 | ||
324 | netdev_hw_addr_list_for_each(ha, mc_list) { | |
325 | /* calculate XOR of eight 6-bit values */ | |
326 | val = get_unaligned_le32(ha->addr + 0); | |
327 | pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; | |
328 | val = get_unaligned_le32(ha->addr + 3); | |
329 | pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; | |
330 | pos &= 0x3f; | |
331 | mfilt[pos / 32] |= (1 << (pos % 32)); | |
332 | /* XXX: we might be able to just do this instead, | |
333 | * but not sure, needs testing, if we do use this we'd | |
6a2a0e73 | 334 | * need to inform below not to reset the mcast */ |
cd2c5486 BR |
335 | /* ath5k_hw_set_mcast_filterindex(ah, |
336 | * ha->addr[5]); */ | |
337 | } | |
338 | ||
339 | return ((u64)(mfilt[1]) << 32) | mfilt[0]; | |
340 | } | |
341 | ||
342 | ||
343 | /* | |
344 | * o always accept unicast, broadcast, and multicast traffic | |
345 | * o multicast traffic for all BSSIDs will be enabled if mac80211 | |
346 | * says it should be | |
347 | * o maintain current state of phy ofdm or phy cck error reception. | |
348 | * If the hardware detects any of these type of errors then | |
349 | * ath5k_hw_get_rx_filter() will pass to us the respective | |
350 | * hardware filters to be able to receive these type of frames. | |
351 | * o probe request frames are accepted only when operating in | |
352 | * hostap, adhoc, or monitor modes | |
353 | * o enable promiscuous mode according to the interface state | |
354 | * o accept beacons: | |
355 | * - when operating in adhoc mode so the 802.11 layer creates | |
356 | * node table entries for peers, | |
357 | * - when operating in station mode for collecting rssi data when | |
358 | * the station is otherwise quiet, or | |
359 | * - when scanning | |
360 | */ | |
361 | static void | |
362 | ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, | |
363 | unsigned int *new_flags, u64 multicast) | |
364 | { | |
365 | #define SUPPORTED_FIF_FLAGS \ | |
366 | (FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | \ | |
367 | FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | \ | |
368 | FIF_BCN_PRBRESP_PROMISC) | |
369 | ||
e0d687bd | 370 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 371 | u32 mfilt[2], rfilt; |
e4b0b32a | 372 | struct ath5k_vif_iter_data iter_data; /* to count STA interfaces */ |
cd2c5486 | 373 | |
e0d687bd | 374 | mutex_lock(&ah->lock); |
cd2c5486 BR |
375 | |
376 | mfilt[0] = multicast; | |
377 | mfilt[1] = multicast >> 32; | |
378 | ||
379 | /* Only deal with supported flags */ | |
380 | changed_flags &= SUPPORTED_FIF_FLAGS; | |
381 | *new_flags &= SUPPORTED_FIF_FLAGS; | |
382 | ||
383 | /* If HW detects any phy or radar errors, leave those filters on. | |
384 | * Also, always enable Unicast, Broadcasts and Multicast | |
385 | * XXX: move unicast, bssid broadcasts and multicast to mac80211 */ | |
386 | rfilt = (ath5k_hw_get_rx_filter(ah) & (AR5K_RX_FILTER_PHYERR)) | | |
387 | (AR5K_RX_FILTER_UCAST | AR5K_RX_FILTER_BCAST | | |
388 | AR5K_RX_FILTER_MCAST); | |
389 | ||
390 | if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) { | |
391 | if (*new_flags & FIF_PROMISC_IN_BSS) | |
e0d687bd | 392 | __set_bit(ATH_STAT_PROMISC, ah->status); |
cd2c5486 | 393 | else |
e0d687bd | 394 | __clear_bit(ATH_STAT_PROMISC, ah->status); |
cd2c5486 BR |
395 | } |
396 | ||
e0d687bd | 397 | if (test_bit(ATH_STAT_PROMISC, ah->status)) |
cd2c5486 BR |
398 | rfilt |= AR5K_RX_FILTER_PROM; |
399 | ||
400 | /* Note, AR5K_RX_FILTER_MCAST is already enabled */ | |
401 | if (*new_flags & FIF_ALLMULTI) { | |
402 | mfilt[0] = ~0; | |
403 | mfilt[1] = ~0; | |
404 | } | |
405 | ||
406 | /* This is the best we can do */ | |
407 | if (*new_flags & (FIF_FCSFAIL | FIF_PLCPFAIL)) | |
408 | rfilt |= AR5K_RX_FILTER_PHYERR; | |
409 | ||
410 | /* FIF_BCN_PRBRESP_PROMISC really means to enable beacons | |
411 | * and probes for any BSSID */ | |
e0d687bd | 412 | if ((*new_flags & FIF_BCN_PRBRESP_PROMISC) || (ah->nvifs > 1)) |
cd2c5486 BR |
413 | rfilt |= AR5K_RX_FILTER_BEACON; |
414 | ||
415 | /* FIF_CONTROL doc says that if FIF_PROMISC_IN_BSS is not | |
416 | * set we should only pass on control frames for this | |
417 | * station. This needs testing. I believe right now this | |
418 | * enables *all* control frames, which is OK.. but | |
419 | * but we should see if we can improve on granularity */ | |
420 | if (*new_flags & FIF_CONTROL) | |
421 | rfilt |= AR5K_RX_FILTER_CONTROL; | |
422 | ||
423 | /* Additional settings per mode -- this is per ath5k */ | |
424 | ||
425 | /* XXX move these to mac80211, and add a beacon IFF flag to mac80211 */ | |
426 | ||
e0d687bd | 427 | switch (ah->opmode) { |
cd2c5486 BR |
428 | case NL80211_IFTYPE_MESH_POINT: |
429 | rfilt |= AR5K_RX_FILTER_CONTROL | | |
430 | AR5K_RX_FILTER_BEACON | | |
431 | AR5K_RX_FILTER_PROBEREQ | | |
432 | AR5K_RX_FILTER_PROM; | |
433 | break; | |
434 | case NL80211_IFTYPE_AP: | |
435 | case NL80211_IFTYPE_ADHOC: | |
436 | rfilt |= AR5K_RX_FILTER_PROBEREQ | | |
437 | AR5K_RX_FILTER_BEACON; | |
438 | break; | |
439 | case NL80211_IFTYPE_STATION: | |
e0d687bd | 440 | if (ah->assoc) |
cd2c5486 BR |
441 | rfilt |= AR5K_RX_FILTER_BEACON; |
442 | default: | |
443 | break; | |
444 | } | |
445 | ||
e4b0b32a BG |
446 | iter_data.hw_macaddr = NULL; |
447 | iter_data.n_stas = 0; | |
448 | iter_data.need_set_hw_addr = false; | |
e0d687bd | 449 | ieee80211_iterate_active_interfaces_atomic(ah->hw, ath5k_vif_iter, |
e4b0b32a BG |
450 | &iter_data); |
451 | ||
452 | /* Set up RX Filter */ | |
453 | if (iter_data.n_stas > 1) { | |
454 | /* If you have multiple STA interfaces connected to | |
455 | * different APs, ARPs are not received (most of the time?) | |
6a2a0e73 | 456 | * Enabling PROMISC appears to fix that problem. |
e4b0b32a BG |
457 | */ |
458 | rfilt |= AR5K_RX_FILTER_PROM; | |
459 | } | |
460 | ||
cd2c5486 BR |
461 | /* Set filters */ |
462 | ath5k_hw_set_rx_filter(ah, rfilt); | |
463 | ||
464 | /* Set multicast bits */ | |
465 | ath5k_hw_set_mcast_filter(ah, mfilt[0], mfilt[1]); | |
466 | /* Set the cached hw filter flags, this will later actually | |
467 | * be set in HW */ | |
e0d687bd | 468 | ah->filter_flags = rfilt; |
cd2c5486 | 469 | |
e0d687bd | 470 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
471 | } |
472 | ||
473 | ||
474 | static int | |
475 | ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, | |
476 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, | |
477 | struct ieee80211_key_conf *key) | |
478 | { | |
e0d687bd | 479 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
480 | struct ath_common *common = ath5k_hw_common(ah); |
481 | int ret = 0; | |
482 | ||
18cb6e32 | 483 | if (ath5k_modparam_nohwcrypt) |
cd2c5486 BR |
484 | return -EOPNOTSUPP; |
485 | ||
486 | switch (key->cipher) { | |
487 | case WLAN_CIPHER_SUITE_WEP40: | |
488 | case WLAN_CIPHER_SUITE_WEP104: | |
489 | case WLAN_CIPHER_SUITE_TKIP: | |
490 | break; | |
491 | case WLAN_CIPHER_SUITE_CCMP: | |
492 | if (common->crypt_caps & ATH_CRYPT_CAP_CIPHER_AESCCM) | |
493 | break; | |
494 | return -EOPNOTSUPP; | |
495 | default: | |
496 | WARN_ON(1); | |
497 | return -EINVAL; | |
498 | } | |
499 | ||
e0d687bd | 500 | mutex_lock(&ah->lock); |
cd2c5486 BR |
501 | |
502 | switch (cmd) { | |
503 | case SET_KEY: | |
504 | ret = ath_key_config(common, vif, sta, key); | |
505 | if (ret >= 0) { | |
506 | key->hw_key_idx = ret; | |
507 | /* push IV and Michael MIC generation to stack */ | |
508 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
509 | if (key->cipher == WLAN_CIPHER_SUITE_TKIP) | |
510 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
511 | if (key->cipher == WLAN_CIPHER_SUITE_CCMP) | |
512 | key->flags |= IEEE80211_KEY_FLAG_SW_MGMT; | |
513 | ret = 0; | |
514 | } | |
515 | break; | |
516 | case DISABLE_KEY: | |
517 | ath_key_delete(common, key); | |
518 | break; | |
519 | default: | |
520 | ret = -EINVAL; | |
521 | } | |
522 | ||
523 | mmiowb(); | |
e0d687bd | 524 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
525 | return ret; |
526 | } | |
527 | ||
528 | ||
529 | static void | |
530 | ath5k_sw_scan_start(struct ieee80211_hw *hw) | |
531 | { | |
e0d687bd PR |
532 | struct ath5k_hw *ah = hw->priv; |
533 | if (!ah->assoc) | |
534 | ath5k_hw_set_ledstate(ah, AR5K_LED_SCAN); | |
cd2c5486 BR |
535 | } |
536 | ||
537 | ||
538 | static void | |
539 | ath5k_sw_scan_complete(struct ieee80211_hw *hw) | |
540 | { | |
e0d687bd PR |
541 | struct ath5k_hw *ah = hw->priv; |
542 | ath5k_hw_set_ledstate(ah, ah->assoc ? | |
cd2c5486 BR |
543 | AR5K_LED_ASSOC : AR5K_LED_INIT); |
544 | } | |
545 | ||
546 | ||
547 | static int | |
548 | ath5k_get_stats(struct ieee80211_hw *hw, | |
549 | struct ieee80211_low_level_stats *stats) | |
550 | { | |
e0d687bd | 551 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
552 | |
553 | /* Force update */ | |
e0d687bd | 554 | ath5k_hw_update_mib_counters(ah); |
cd2c5486 | 555 | |
e0d687bd PR |
556 | stats->dot11ACKFailureCount = ah->stats.ack_fail; |
557 | stats->dot11RTSFailureCount = ah->stats.rts_fail; | |
558 | stats->dot11RTSSuccessCount = ah->stats.rts_ok; | |
559 | stats->dot11FCSErrorCount = ah->stats.fcs_error; | |
cd2c5486 BR |
560 | |
561 | return 0; | |
562 | } | |
563 | ||
564 | ||
565 | static int | |
8a3a3c85 | 566 | ath5k_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, |
cd2c5486 BR |
567 | const struct ieee80211_tx_queue_params *params) |
568 | { | |
e0d687bd | 569 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
570 | struct ath5k_txq_info qi; |
571 | int ret = 0; | |
572 | ||
573 | if (queue >= ah->ah_capabilities.cap_queues.q_tx_num) | |
574 | return 0; | |
575 | ||
e0d687bd | 576 | mutex_lock(&ah->lock); |
cd2c5486 BR |
577 | |
578 | ath5k_hw_get_tx_queueprops(ah, queue, &qi); | |
579 | ||
580 | qi.tqi_aifs = params->aifs; | |
581 | qi.tqi_cw_min = params->cw_min; | |
582 | qi.tqi_cw_max = params->cw_max; | |
583 | qi.tqi_burst_time = params->txop; | |
584 | ||
e0d687bd | 585 | ATH5K_DBG(ah, ATH5K_DEBUG_ANY, |
cd2c5486 BR |
586 | "Configure tx [queue %d], " |
587 | "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", | |
588 | queue, params->aifs, params->cw_min, | |
589 | params->cw_max, params->txop); | |
590 | ||
591 | if (ath5k_hw_set_tx_queueprops(ah, queue, &qi)) { | |
e0d687bd | 592 | ATH5K_ERR(ah, |
cd2c5486 BR |
593 | "Unable to update hardware queue %u!\n", queue); |
594 | ret = -EIO; | |
595 | } else | |
596 | ath5k_hw_reset_tx_queue(ah, queue); | |
597 | ||
e0d687bd | 598 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
599 | |
600 | return ret; | |
601 | } | |
602 | ||
603 | ||
604 | static u64 | |
37a41b4a | 605 | ath5k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
cd2c5486 | 606 | { |
e0d687bd | 607 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 608 | |
e0d687bd | 609 | return ath5k_hw_get_tsf64(ah); |
cd2c5486 BR |
610 | } |
611 | ||
612 | ||
613 | static void | |
37a41b4a | 614 | ath5k_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u64 tsf) |
cd2c5486 | 615 | { |
e0d687bd | 616 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 617 | |
e0d687bd | 618 | ath5k_hw_set_tsf64(ah, tsf); |
cd2c5486 BR |
619 | } |
620 | ||
621 | ||
622 | static void | |
37a41b4a | 623 | ath5k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
cd2c5486 | 624 | { |
e0d687bd | 625 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
626 | |
627 | /* | |
628 | * in IBSS mode we need to update the beacon timers too. | |
629 | * this will also reset the TSF if we call it with 0 | |
630 | */ | |
e0d687bd PR |
631 | if (ah->opmode == NL80211_IFTYPE_ADHOC) |
632 | ath5k_beacon_update_timers(ah, 0); | |
cd2c5486 | 633 | else |
e0d687bd | 634 | ath5k_hw_reset_tsf(ah); |
cd2c5486 BR |
635 | } |
636 | ||
637 | ||
638 | static int | |
639 | ath5k_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey) | |
640 | { | |
e0d687bd | 641 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 642 | struct ieee80211_conf *conf = &hw->conf; |
e0d687bd | 643 | struct ath_common *common = ath5k_hw_common(ah); |
cd2c5486 BR |
644 | struct ath_cycle_counters *cc = &common->cc_survey; |
645 | unsigned int div = common->clockrate * 1000; | |
646 | ||
647 | if (idx != 0) | |
648 | return -ENOENT; | |
649 | ||
650 | spin_lock_bh(&common->cc_lock); | |
651 | ath_hw_cycle_counters_update(common); | |
652 | if (cc->cycles > 0) { | |
e0d687bd PR |
653 | ah->survey.channel_time += cc->cycles / div; |
654 | ah->survey.channel_time_busy += cc->rx_busy / div; | |
655 | ah->survey.channel_time_rx += cc->rx_frame / div; | |
656 | ah->survey.channel_time_tx += cc->tx_frame / div; | |
cd2c5486 BR |
657 | } |
658 | memset(cc, 0, sizeof(*cc)); | |
659 | spin_unlock_bh(&common->cc_lock); | |
660 | ||
e0d687bd | 661 | memcpy(survey, &ah->survey, sizeof(*survey)); |
cd2c5486 BR |
662 | |
663 | survey->channel = conf->channel; | |
e0d687bd | 664 | survey->noise = ah->ah_noise_floor; |
cd2c5486 BR |
665 | survey->filled = SURVEY_INFO_NOISE_DBM | |
666 | SURVEY_INFO_CHANNEL_TIME | | |
667 | SURVEY_INFO_CHANNEL_TIME_BUSY | | |
668 | SURVEY_INFO_CHANNEL_TIME_RX | | |
669 | SURVEY_INFO_CHANNEL_TIME_TX; | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
674 | ||
675 | /** | |
676 | * ath5k_set_coverage_class - Set IEEE 802.11 coverage class | |
677 | * | |
678 | * @hw: struct ieee80211_hw pointer | |
679 | * @coverage_class: IEEE 802.11 coverage class number | |
680 | * | |
681 | * Mac80211 callback. Sets slot time, ACK timeout and CTS timeout for given | |
682 | * coverage class. The values are persistent, they are restored after device | |
683 | * reset. | |
684 | */ | |
685 | static void | |
686 | ath5k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class) | |
687 | { | |
e0d687bd | 688 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 689 | |
e0d687bd PR |
690 | mutex_lock(&ah->lock); |
691 | ath5k_hw_set_coverage_class(ah, coverage_class); | |
692 | mutex_unlock(&ah->lock); | |
cd2c5486 BR |
693 | } |
694 | ||
695 | ||
696 | static int | |
697 | ath5k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) | |
698 | { | |
e0d687bd | 699 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
700 | |
701 | if (tx_ant == 1 && rx_ant == 1) | |
e0d687bd | 702 | ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A); |
cd2c5486 | 703 | else if (tx_ant == 2 && rx_ant == 2) |
e0d687bd | 704 | ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B); |
cd2c5486 | 705 | else if ((tx_ant & 3) == 3 && (rx_ant & 3) == 3) |
e0d687bd | 706 | ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT); |
cd2c5486 BR |
707 | else |
708 | return -EINVAL; | |
709 | return 0; | |
710 | } | |
711 | ||
712 | ||
713 | static int | |
714 | ath5k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) | |
715 | { | |
e0d687bd | 716 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 717 | |
e0d687bd | 718 | switch (ah->ah_ant_mode) { |
cd2c5486 BR |
719 | case AR5K_ANTMODE_FIXED_A: |
720 | *tx_ant = 1; *rx_ant = 1; break; | |
721 | case AR5K_ANTMODE_FIXED_B: | |
722 | *tx_ant = 2; *rx_ant = 2; break; | |
723 | case AR5K_ANTMODE_DEFAULT: | |
724 | *tx_ant = 3; *rx_ant = 3; break; | |
725 | } | |
726 | return 0; | |
727 | } | |
728 | ||
729 | ||
81266baf JL |
730 | static void ath5k_get_ringparam(struct ieee80211_hw *hw, |
731 | u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) | |
732 | { | |
e0d687bd | 733 | struct ath5k_hw *ah = hw->priv; |
81266baf | 734 | |
e0d687bd | 735 | *tx = ah->txqs[AR5K_TX_QUEUE_ID_DATA_MIN].txq_max; |
81266baf JL |
736 | |
737 | *tx_max = ATH5K_TXQ_LEN_MAX; | |
738 | *rx = *rx_max = ATH_RXBUF; | |
739 | } | |
740 | ||
741 | ||
742 | static int ath5k_set_ringparam(struct ieee80211_hw *hw, u32 tx, u32 rx) | |
743 | { | |
e0d687bd | 744 | struct ath5k_hw *ah = hw->priv; |
81266baf JL |
745 | u16 qnum; |
746 | ||
747 | /* only support setting tx ring size for now */ | |
748 | if (rx != ATH_RXBUF) | |
749 | return -EINVAL; | |
750 | ||
751 | /* restrict tx ring size min/max */ | |
752 | if (!tx || tx > ATH5K_TXQ_LEN_MAX) | |
753 | return -EINVAL; | |
754 | ||
e0d687bd PR |
755 | for (qnum = 0; qnum < ARRAY_SIZE(ah->txqs); qnum++) { |
756 | if (!ah->txqs[qnum].setup) | |
81266baf | 757 | continue; |
e0d687bd PR |
758 | if (ah->txqs[qnum].qnum < AR5K_TX_QUEUE_ID_DATA_MIN || |
759 | ah->txqs[qnum].qnum > AR5K_TX_QUEUE_ID_DATA_MAX) | |
81266baf JL |
760 | continue; |
761 | ||
e0d687bd PR |
762 | ah->txqs[qnum].txq_max = tx; |
763 | if (ah->txqs[qnum].txq_len >= ah->txqs[qnum].txq_max) | |
764 | ieee80211_stop_queue(hw, ah->txqs[qnum].qnum); | |
81266baf JL |
765 | } |
766 | ||
767 | return 0; | |
768 | } | |
769 | ||
770 | ||
cd2c5486 BR |
771 | const struct ieee80211_ops ath5k_hw_ops = { |
772 | .tx = ath5k_tx, | |
773 | .start = ath5k_start, | |
774 | .stop = ath5k_stop, | |
775 | .add_interface = ath5k_add_interface, | |
776 | /* .change_interface = not implemented */ | |
777 | .remove_interface = ath5k_remove_interface, | |
778 | .config = ath5k_config, | |
779 | .bss_info_changed = ath5k_bss_info_changed, | |
780 | .prepare_multicast = ath5k_prepare_multicast, | |
781 | .configure_filter = ath5k_configure_filter, | |
782 | /* .set_tim = not implemented */ | |
783 | .set_key = ath5k_set_key, | |
784 | /* .update_tkip_key = not implemented */ | |
785 | /* .hw_scan = not implemented */ | |
786 | .sw_scan_start = ath5k_sw_scan_start, | |
787 | .sw_scan_complete = ath5k_sw_scan_complete, | |
788 | .get_stats = ath5k_get_stats, | |
789 | /* .get_tkip_seq = not implemented */ | |
790 | /* .set_frag_threshold = not implemented */ | |
791 | /* .set_rts_threshold = not implemented */ | |
792 | /* .sta_add = not implemented */ | |
793 | /* .sta_remove = not implemented */ | |
794 | /* .sta_notify = not implemented */ | |
795 | .conf_tx = ath5k_conf_tx, | |
796 | .get_tsf = ath5k_get_tsf, | |
797 | .set_tsf = ath5k_set_tsf, | |
798 | .reset_tsf = ath5k_reset_tsf, | |
799 | /* .tx_last_beacon = not implemented */ | |
800 | /* .ampdu_action = not needed */ | |
801 | .get_survey = ath5k_get_survey, | |
802 | .set_coverage_class = ath5k_set_coverage_class, | |
803 | /* .rfkill_poll = not implemented */ | |
804 | /* .flush = not implemented */ | |
805 | /* .channel_switch = not implemented */ | |
806 | /* .napi_poll = not implemented */ | |
807 | .set_antenna = ath5k_set_antenna, | |
808 | .get_antenna = ath5k_get_antenna, | |
81266baf JL |
809 | .set_ringparam = ath5k_set_ringparam, |
810 | .get_ringparam = ath5k_get_ringparam, | |
cd2c5486 | 811 | }; |