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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 | ||
516304b0 JP |
44 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
45 | ||
931be260 | 46 | #include <net/mac80211.h> |
cd2c5486 BR |
47 | #include <asm/unaligned.h> |
48 | ||
931be260 | 49 | #include "ath5k.h" |
cd2c5486 BR |
50 | #include "base.h" |
51 | #include "reg.h" | |
52 | ||
cd2c5486 BR |
53 | /********************\ |
54 | * Mac80211 functions * | |
55 | \********************/ | |
56 | ||
7bb45683 | 57 | static void |
cd2c5486 BR |
58 | ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
59 | { | |
e0d687bd | 60 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
61 | u16 qnum = skb_get_queue_mapping(skb); |
62 | ||
e0d687bd | 63 | if (WARN_ON(qnum >= ah->ah_capabilities.cap_queues.q_tx_num)) { |
cd2c5486 | 64 | dev_kfree_skb_any(skb); |
7bb45683 | 65 | return; |
cd2c5486 BR |
66 | } |
67 | ||
e0d687bd | 68 | ath5k_tx_queue(hw, skb, &ah->txqs[qnum]); |
cd2c5486 BR |
69 | } |
70 | ||
71 | ||
cd2c5486 BR |
72 | static int |
73 | ath5k_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
74 | { | |
e0d687bd | 75 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
76 | int ret; |
77 | struct ath5k_vif *avf = (void *)vif->drv_priv; | |
78 | ||
e0d687bd | 79 | mutex_lock(&ah->lock); |
cd2c5486 BR |
80 | |
81 | if ((vif->type == NL80211_IFTYPE_AP || | |
82 | vif->type == NL80211_IFTYPE_ADHOC) | |
e0d687bd | 83 | && (ah->num_ap_vifs + ah->num_adhoc_vifs) >= ATH_BCBUF) { |
cd2c5486 BR |
84 | ret = -ELNRNG; |
85 | goto end; | |
86 | } | |
87 | ||
88 | /* Don't allow other interfaces if one ad-hoc is configured. | |
89 | * TODO: Fix the problems with ad-hoc and multiple other interfaces. | |
90 | * We would need to operate the HW in ad-hoc mode to allow TSF updates | |
91 | * for the IBSS, but this breaks with additional AP or STA interfaces | |
92 | * at the moment. */ | |
e0d687bd PR |
93 | if (ah->num_adhoc_vifs || |
94 | (ah->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) { | |
95 | ATH5K_ERR(ah, "Only one single ad-hoc interface is allowed.\n"); | |
cd2c5486 BR |
96 | ret = -ELNRNG; |
97 | goto end; | |
98 | } | |
99 | ||
100 | switch (vif->type) { | |
101 | case NL80211_IFTYPE_AP: | |
102 | case NL80211_IFTYPE_STATION: | |
103 | case NL80211_IFTYPE_ADHOC: | |
104 | case NL80211_IFTYPE_MESH_POINT: | |
105 | avf->opmode = vif->type; | |
106 | break; | |
107 | default: | |
108 | ret = -EOPNOTSUPP; | |
109 | goto end; | |
110 | } | |
111 | ||
e0d687bd PR |
112 | ah->nvifs++; |
113 | ATH5K_DBG(ah, ATH5K_DEBUG_MODE, "add interface mode %d\n", avf->opmode); | |
cd2c5486 BR |
114 | |
115 | /* Assign the vap/adhoc to a beacon xmit slot. */ | |
116 | if ((avf->opmode == NL80211_IFTYPE_AP) || | |
117 | (avf->opmode == NL80211_IFTYPE_ADHOC) || | |
118 | (avf->opmode == NL80211_IFTYPE_MESH_POINT)) { | |
119 | int slot; | |
120 | ||
e0d687bd PR |
121 | WARN_ON(list_empty(&ah->bcbuf)); |
122 | avf->bbuf = list_first_entry(&ah->bcbuf, struct ath5k_buf, | |
cd2c5486 BR |
123 | list); |
124 | list_del(&avf->bbuf->list); | |
125 | ||
126 | avf->bslot = 0; | |
127 | for (slot = 0; slot < ATH_BCBUF; slot++) { | |
e0d687bd | 128 | if (!ah->bslot[slot]) { |
cd2c5486 BR |
129 | avf->bslot = slot; |
130 | break; | |
131 | } | |
132 | } | |
e0d687bd PR |
133 | BUG_ON(ah->bslot[avf->bslot] != NULL); |
134 | ah->bslot[avf->bslot] = vif; | |
cd2c5486 | 135 | if (avf->opmode == NL80211_IFTYPE_AP) |
e0d687bd | 136 | ah->num_ap_vifs++; |
cd2c5486 | 137 | else if (avf->opmode == NL80211_IFTYPE_ADHOC) |
e0d687bd | 138 | ah->num_adhoc_vifs++; |
da473b61 CYY |
139 | else if (avf->opmode == NL80211_IFTYPE_MESH_POINT) |
140 | ah->num_mesh_vifs++; | |
cd2c5486 BR |
141 | } |
142 | ||
143 | /* Any MAC address is fine, all others are included through the | |
144 | * filter. | |
145 | */ | |
e0d687bd | 146 | ath5k_hw_set_lladdr(ah, vif->addr); |
cd2c5486 | 147 | |
e0d687bd | 148 | ath5k_update_bssid_mask_and_opmode(ah, vif); |
cd2c5486 BR |
149 | ret = 0; |
150 | end: | |
e0d687bd | 151 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
152 | return ret; |
153 | } | |
154 | ||
155 | ||
156 | static void | |
157 | ath5k_remove_interface(struct ieee80211_hw *hw, | |
158 | struct ieee80211_vif *vif) | |
159 | { | |
e0d687bd | 160 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
161 | struct ath5k_vif *avf = (void *)vif->drv_priv; |
162 | unsigned int i; | |
163 | ||
e0d687bd PR |
164 | mutex_lock(&ah->lock); |
165 | ah->nvifs--; | |
cd2c5486 BR |
166 | |
167 | if (avf->bbuf) { | |
e0d687bd PR |
168 | ath5k_txbuf_free_skb(ah, avf->bbuf); |
169 | list_add_tail(&avf->bbuf->list, &ah->bcbuf); | |
cd2c5486 | 170 | for (i = 0; i < ATH_BCBUF; i++) { |
e0d687bd PR |
171 | if (ah->bslot[i] == vif) { |
172 | ah->bslot[i] = NULL; | |
cd2c5486 BR |
173 | break; |
174 | } | |
175 | } | |
176 | avf->bbuf = NULL; | |
177 | } | |
178 | if (avf->opmode == NL80211_IFTYPE_AP) | |
e0d687bd | 179 | ah->num_ap_vifs--; |
cd2c5486 | 180 | else if (avf->opmode == NL80211_IFTYPE_ADHOC) |
e0d687bd | 181 | ah->num_adhoc_vifs--; |
da473b61 CYY |
182 | else if (avf->opmode == NL80211_IFTYPE_MESH_POINT) |
183 | ah->num_mesh_vifs--; | |
cd2c5486 | 184 | |
e0d687bd PR |
185 | ath5k_update_bssid_mask_and_opmode(ah, NULL); |
186 | mutex_unlock(&ah->lock); | |
cd2c5486 BR |
187 | } |
188 | ||
189 | ||
190 | /* | |
191 | * TODO: Phy disable/diversity etc | |
192 | */ | |
193 | static int | |
194 | ath5k_config(struct ieee80211_hw *hw, u32 changed) | |
195 | { | |
e0d687bd | 196 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
197 | struct ieee80211_conf *conf = &hw->conf; |
198 | int ret = 0; | |
76a9f6fd | 199 | int i; |
cd2c5486 | 200 | |
e0d687bd | 201 | mutex_lock(&ah->lock); |
cd2c5486 BR |
202 | |
203 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { | |
e0d687bd | 204 | ret = ath5k_chan_set(ah, conf->channel); |
cd2c5486 BR |
205 | if (ret < 0) |
206 | goto unlock; | |
207 | } | |
208 | ||
209 | if ((changed & IEEE80211_CONF_CHANGE_POWER) && | |
e0d687bd PR |
210 | (ah->power_level != conf->power_level)) { |
211 | ah->power_level = conf->power_level; | |
cd2c5486 BR |
212 | |
213 | /* Half dB steps */ | |
214 | ath5k_hw_set_txpower_limit(ah, (conf->power_level * 2)); | |
215 | } | |
216 | ||
76a9f6fd BR |
217 | if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { |
218 | ah->ah_retry_long = conf->long_frame_max_tx_count; | |
219 | ah->ah_retry_short = conf->short_frame_max_tx_count; | |
220 | ||
221 | for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) | |
222 | ath5k_hw_set_tx_retry_limits(ah, i); | |
223 | } | |
224 | ||
cd2c5486 BR |
225 | /* TODO: |
226 | * 1) Move this on config_interface and handle each case | |
227 | * separately eg. when we have only one STA vif, use | |
228 | * AR5K_ANTMODE_SINGLE_AP | |
229 | * | |
230 | * 2) Allow the user to change antenna mode eg. when only | |
231 | * one antenna is present | |
232 | * | |
233 | * 3) Allow the user to set default/tx antenna when possible | |
234 | * | |
235 | * 4) Default mode should handle 90% of the cases, together | |
236 | * with fixed a/b and single AP modes we should be able to | |
237 | * handle 99%. Sectored modes are extreme cases and i still | |
238 | * haven't found a usage for them. If we decide to support them, | |
239 | * then we must allow the user to set how many tx antennas we | |
240 | * have available | |
241 | */ | |
242 | ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode); | |
243 | ||
244 | unlock: | |
e0d687bd | 245 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
246 | return ret; |
247 | } | |
248 | ||
249 | ||
250 | static void | |
251 | ath5k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
252 | struct ieee80211_bss_conf *bss_conf, u32 changes) | |
253 | { | |
254 | struct ath5k_vif *avf = (void *)vif->drv_priv; | |
e0d687bd | 255 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 256 | struct ath_common *common = ath5k_hw_common(ah); |
cd2c5486 | 257 | |
e0d687bd | 258 | mutex_lock(&ah->lock); |
cd2c5486 BR |
259 | |
260 | if (changes & BSS_CHANGED_BSSID) { | |
261 | /* Cache for later use during resets */ | |
262 | memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); | |
263 | common->curaid = 0; | |
264 | ath5k_hw_set_bssid(ah); | |
265 | mmiowb(); | |
266 | } | |
267 | ||
268 | if (changes & BSS_CHANGED_BEACON_INT) | |
e0d687bd | 269 | ah->bintval = bss_conf->beacon_int; |
cd2c5486 | 270 | |
b1ad1b6f FF |
271 | if (changes & BSS_CHANGED_ERP_SLOT) { |
272 | int slot_time; | |
273 | ||
274 | ah->ah_short_slot = bss_conf->use_short_slot; | |
275 | slot_time = ath5k_hw_get_default_slottime(ah) + | |
276 | 3 * ah->ah_coverage_class; | |
277 | ath5k_hw_set_ifs_intervals(ah, slot_time); | |
278 | } | |
279 | ||
cd2c5486 BR |
280 | if (changes & BSS_CHANGED_ASSOC) { |
281 | avf->assoc = bss_conf->assoc; | |
282 | if (bss_conf->assoc) | |
e0d687bd | 283 | ah->assoc = bss_conf->assoc; |
cd2c5486 | 284 | else |
e0d687bd | 285 | ah->assoc = ath5k_any_vif_assoc(ah); |
cd2c5486 | 286 | |
e0d687bd PR |
287 | if (ah->opmode == NL80211_IFTYPE_STATION) |
288 | ath5k_set_beacon_filter(hw, ah->assoc); | |
289 | ath5k_hw_set_ledstate(ah, ah->assoc ? | |
cd2c5486 BR |
290 | AR5K_LED_ASSOC : AR5K_LED_INIT); |
291 | if (bss_conf->assoc) { | |
e0d687bd | 292 | ATH5K_DBG(ah, ATH5K_DEBUG_ANY, |
cd2c5486 BR |
293 | "Bss Info ASSOC %d, bssid: %pM\n", |
294 | bss_conf->aid, common->curbssid); | |
295 | common->curaid = bss_conf->aid; | |
296 | ath5k_hw_set_bssid(ah); | |
297 | /* Once ANI is available you would start it here */ | |
298 | } | |
299 | } | |
300 | ||
301 | if (changes & BSS_CHANGED_BEACON) { | |
7dd6753f | 302 | spin_lock_bh(&ah->block); |
cd2c5486 | 303 | ath5k_beacon_update(hw, vif); |
7dd6753f | 304 | spin_unlock_bh(&ah->block); |
cd2c5486 BR |
305 | } |
306 | ||
307 | if (changes & BSS_CHANGED_BEACON_ENABLED) | |
e0d687bd | 308 | ah->enable_beacon = bss_conf->enable_beacon; |
cd2c5486 BR |
309 | |
310 | if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED | | |
311 | BSS_CHANGED_BEACON_INT)) | |
e0d687bd | 312 | ath5k_beacon_config(ah); |
cd2c5486 | 313 | |
e0d687bd | 314 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
315 | } |
316 | ||
317 | ||
318 | static u64 | |
319 | ath5k_prepare_multicast(struct ieee80211_hw *hw, | |
320 | struct netdev_hw_addr_list *mc_list) | |
321 | { | |
322 | u32 mfilt[2], val; | |
323 | u8 pos; | |
324 | struct netdev_hw_addr *ha; | |
325 | ||
326 | mfilt[0] = 0; | |
327 | mfilt[1] = 1; | |
328 | ||
329 | netdev_hw_addr_list_for_each(ha, mc_list) { | |
330 | /* calculate XOR of eight 6-bit values */ | |
331 | val = get_unaligned_le32(ha->addr + 0); | |
332 | pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; | |
333 | val = get_unaligned_le32(ha->addr + 3); | |
334 | pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; | |
335 | pos &= 0x3f; | |
336 | mfilt[pos / 32] |= (1 << (pos % 32)); | |
337 | /* XXX: we might be able to just do this instead, | |
338 | * but not sure, needs testing, if we do use this we'd | |
6a2a0e73 | 339 | * need to inform below not to reset the mcast */ |
cd2c5486 BR |
340 | /* ath5k_hw_set_mcast_filterindex(ah, |
341 | * ha->addr[5]); */ | |
342 | } | |
343 | ||
344 | return ((u64)(mfilt[1]) << 32) | mfilt[0]; | |
345 | } | |
346 | ||
347 | ||
348 | /* | |
349 | * o always accept unicast, broadcast, and multicast traffic | |
350 | * o multicast traffic for all BSSIDs will be enabled if mac80211 | |
351 | * says it should be | |
352 | * o maintain current state of phy ofdm or phy cck error reception. | |
353 | * If the hardware detects any of these type of errors then | |
354 | * ath5k_hw_get_rx_filter() will pass to us the respective | |
355 | * hardware filters to be able to receive these type of frames. | |
356 | * o probe request frames are accepted only when operating in | |
357 | * hostap, adhoc, or monitor modes | |
358 | * o enable promiscuous mode according to the interface state | |
359 | * o accept beacons: | |
360 | * - when operating in adhoc mode so the 802.11 layer creates | |
361 | * node table entries for peers, | |
362 | * - when operating in station mode for collecting rssi data when | |
363 | * the station is otherwise quiet, or | |
364 | * - when scanning | |
365 | */ | |
366 | static void | |
367 | ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, | |
368 | unsigned int *new_flags, u64 multicast) | |
369 | { | |
370 | #define SUPPORTED_FIF_FLAGS \ | |
371 | (FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | \ | |
372 | FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | \ | |
373 | FIF_BCN_PRBRESP_PROMISC) | |
374 | ||
e0d687bd | 375 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 376 | u32 mfilt[2], rfilt; |
e4b0b32a | 377 | struct ath5k_vif_iter_data iter_data; /* to count STA interfaces */ |
cd2c5486 | 378 | |
e0d687bd | 379 | mutex_lock(&ah->lock); |
cd2c5486 BR |
380 | |
381 | mfilt[0] = multicast; | |
382 | mfilt[1] = multicast >> 32; | |
383 | ||
384 | /* Only deal with supported flags */ | |
385 | changed_flags &= SUPPORTED_FIF_FLAGS; | |
386 | *new_flags &= SUPPORTED_FIF_FLAGS; | |
387 | ||
388 | /* If HW detects any phy or radar errors, leave those filters on. | |
389 | * Also, always enable Unicast, Broadcasts and Multicast | |
390 | * XXX: move unicast, bssid broadcasts and multicast to mac80211 */ | |
391 | rfilt = (ath5k_hw_get_rx_filter(ah) & (AR5K_RX_FILTER_PHYERR)) | | |
392 | (AR5K_RX_FILTER_UCAST | AR5K_RX_FILTER_BCAST | | |
393 | AR5K_RX_FILTER_MCAST); | |
394 | ||
395 | if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) { | |
396 | if (*new_flags & FIF_PROMISC_IN_BSS) | |
e0d687bd | 397 | __set_bit(ATH_STAT_PROMISC, ah->status); |
cd2c5486 | 398 | else |
e0d687bd | 399 | __clear_bit(ATH_STAT_PROMISC, ah->status); |
cd2c5486 BR |
400 | } |
401 | ||
e0d687bd | 402 | if (test_bit(ATH_STAT_PROMISC, ah->status)) |
cd2c5486 BR |
403 | rfilt |= AR5K_RX_FILTER_PROM; |
404 | ||
405 | /* Note, AR5K_RX_FILTER_MCAST is already enabled */ | |
406 | if (*new_flags & FIF_ALLMULTI) { | |
407 | mfilt[0] = ~0; | |
408 | mfilt[1] = ~0; | |
409 | } | |
410 | ||
411 | /* This is the best we can do */ | |
412 | if (*new_flags & (FIF_FCSFAIL | FIF_PLCPFAIL)) | |
413 | rfilt |= AR5K_RX_FILTER_PHYERR; | |
414 | ||
415 | /* FIF_BCN_PRBRESP_PROMISC really means to enable beacons | |
416 | * and probes for any BSSID */ | |
e0d687bd | 417 | if ((*new_flags & FIF_BCN_PRBRESP_PROMISC) || (ah->nvifs > 1)) |
cd2c5486 BR |
418 | rfilt |= AR5K_RX_FILTER_BEACON; |
419 | ||
420 | /* FIF_CONTROL doc says that if FIF_PROMISC_IN_BSS is not | |
421 | * set we should only pass on control frames for this | |
422 | * station. This needs testing. I believe right now this | |
423 | * enables *all* control frames, which is OK.. but | |
424 | * but we should see if we can improve on granularity */ | |
425 | if (*new_flags & FIF_CONTROL) | |
426 | rfilt |= AR5K_RX_FILTER_CONTROL; | |
427 | ||
428 | /* Additional settings per mode -- this is per ath5k */ | |
429 | ||
430 | /* XXX move these to mac80211, and add a beacon IFF flag to mac80211 */ | |
431 | ||
e0d687bd | 432 | switch (ah->opmode) { |
cd2c5486 BR |
433 | case NL80211_IFTYPE_MESH_POINT: |
434 | rfilt |= AR5K_RX_FILTER_CONTROL | | |
435 | AR5K_RX_FILTER_BEACON | | |
436 | AR5K_RX_FILTER_PROBEREQ | | |
437 | AR5K_RX_FILTER_PROM; | |
438 | break; | |
439 | case NL80211_IFTYPE_AP: | |
440 | case NL80211_IFTYPE_ADHOC: | |
441 | rfilt |= AR5K_RX_FILTER_PROBEREQ | | |
442 | AR5K_RX_FILTER_BEACON; | |
443 | break; | |
444 | case NL80211_IFTYPE_STATION: | |
e0d687bd | 445 | if (ah->assoc) |
cd2c5486 BR |
446 | rfilt |= AR5K_RX_FILTER_BEACON; |
447 | default: | |
448 | break; | |
449 | } | |
450 | ||
e4b0b32a BG |
451 | iter_data.hw_macaddr = NULL; |
452 | iter_data.n_stas = 0; | |
453 | iter_data.need_set_hw_addr = false; | |
e0d687bd | 454 | ieee80211_iterate_active_interfaces_atomic(ah->hw, ath5k_vif_iter, |
e4b0b32a BG |
455 | &iter_data); |
456 | ||
457 | /* Set up RX Filter */ | |
458 | if (iter_data.n_stas > 1) { | |
459 | /* If you have multiple STA interfaces connected to | |
460 | * different APs, ARPs are not received (most of the time?) | |
6a2a0e73 | 461 | * Enabling PROMISC appears to fix that problem. |
e4b0b32a BG |
462 | */ |
463 | rfilt |= AR5K_RX_FILTER_PROM; | |
464 | } | |
465 | ||
cd2c5486 BR |
466 | /* Set filters */ |
467 | ath5k_hw_set_rx_filter(ah, rfilt); | |
468 | ||
469 | /* Set multicast bits */ | |
470 | ath5k_hw_set_mcast_filter(ah, mfilt[0], mfilt[1]); | |
471 | /* Set the cached hw filter flags, this will later actually | |
472 | * be set in HW */ | |
e0d687bd | 473 | ah->filter_flags = rfilt; |
cd2c5486 | 474 | |
e0d687bd | 475 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
476 | } |
477 | ||
478 | ||
479 | static int | |
480 | ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, | |
481 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, | |
482 | struct ieee80211_key_conf *key) | |
483 | { | |
e0d687bd | 484 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
485 | struct ath_common *common = ath5k_hw_common(ah); |
486 | int ret = 0; | |
487 | ||
18cb6e32 | 488 | if (ath5k_modparam_nohwcrypt) |
cd2c5486 BR |
489 | return -EOPNOTSUPP; |
490 | ||
f9972577 AQ |
491 | if (vif->type == NL80211_IFTYPE_ADHOC && |
492 | (key->cipher == WLAN_CIPHER_SUITE_TKIP || | |
493 | key->cipher == WLAN_CIPHER_SUITE_CCMP) && | |
494 | !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { | |
495 | /* don't program group keys when using IBSS_RSN */ | |
496 | return -EOPNOTSUPP; | |
497 | } | |
498 | ||
cd2c5486 BR |
499 | switch (key->cipher) { |
500 | case WLAN_CIPHER_SUITE_WEP40: | |
501 | case WLAN_CIPHER_SUITE_WEP104: | |
502 | case WLAN_CIPHER_SUITE_TKIP: | |
503 | break; | |
504 | case WLAN_CIPHER_SUITE_CCMP: | |
505 | if (common->crypt_caps & ATH_CRYPT_CAP_CIPHER_AESCCM) | |
506 | break; | |
507 | return -EOPNOTSUPP; | |
508 | default: | |
509 | WARN_ON(1); | |
510 | return -EINVAL; | |
511 | } | |
512 | ||
e0d687bd | 513 | mutex_lock(&ah->lock); |
cd2c5486 BR |
514 | |
515 | switch (cmd) { | |
516 | case SET_KEY: | |
517 | ret = ath_key_config(common, vif, sta, key); | |
518 | if (ret >= 0) { | |
519 | key->hw_key_idx = ret; | |
520 | /* push IV and Michael MIC generation to stack */ | |
521 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
522 | if (key->cipher == WLAN_CIPHER_SUITE_TKIP) | |
523 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
524 | if (key->cipher == WLAN_CIPHER_SUITE_CCMP) | |
525 | key->flags |= IEEE80211_KEY_FLAG_SW_MGMT; | |
526 | ret = 0; | |
527 | } | |
528 | break; | |
529 | case DISABLE_KEY: | |
530 | ath_key_delete(common, key); | |
531 | break; | |
532 | default: | |
533 | ret = -EINVAL; | |
534 | } | |
535 | ||
536 | mmiowb(); | |
e0d687bd | 537 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
538 | return ret; |
539 | } | |
540 | ||
541 | ||
542 | static void | |
543 | ath5k_sw_scan_start(struct ieee80211_hw *hw) | |
544 | { | |
e0d687bd PR |
545 | struct ath5k_hw *ah = hw->priv; |
546 | if (!ah->assoc) | |
547 | ath5k_hw_set_ledstate(ah, AR5K_LED_SCAN); | |
cd2c5486 BR |
548 | } |
549 | ||
550 | ||
551 | static void | |
552 | ath5k_sw_scan_complete(struct ieee80211_hw *hw) | |
553 | { | |
e0d687bd PR |
554 | struct ath5k_hw *ah = hw->priv; |
555 | ath5k_hw_set_ledstate(ah, ah->assoc ? | |
cd2c5486 BR |
556 | AR5K_LED_ASSOC : AR5K_LED_INIT); |
557 | } | |
558 | ||
559 | ||
560 | static int | |
561 | ath5k_get_stats(struct ieee80211_hw *hw, | |
562 | struct ieee80211_low_level_stats *stats) | |
563 | { | |
e0d687bd | 564 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
565 | |
566 | /* Force update */ | |
e0d687bd | 567 | ath5k_hw_update_mib_counters(ah); |
cd2c5486 | 568 | |
e0d687bd PR |
569 | stats->dot11ACKFailureCount = ah->stats.ack_fail; |
570 | stats->dot11RTSFailureCount = ah->stats.rts_fail; | |
571 | stats->dot11RTSSuccessCount = ah->stats.rts_ok; | |
572 | stats->dot11FCSErrorCount = ah->stats.fcs_error; | |
cd2c5486 BR |
573 | |
574 | return 0; | |
575 | } | |
576 | ||
577 | ||
578 | static int | |
8a3a3c85 | 579 | ath5k_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, |
cd2c5486 BR |
580 | const struct ieee80211_tx_queue_params *params) |
581 | { | |
e0d687bd | 582 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
583 | struct ath5k_txq_info qi; |
584 | int ret = 0; | |
585 | ||
586 | if (queue >= ah->ah_capabilities.cap_queues.q_tx_num) | |
587 | return 0; | |
588 | ||
e0d687bd | 589 | mutex_lock(&ah->lock); |
cd2c5486 BR |
590 | |
591 | ath5k_hw_get_tx_queueprops(ah, queue, &qi); | |
592 | ||
593 | qi.tqi_aifs = params->aifs; | |
594 | qi.tqi_cw_min = params->cw_min; | |
595 | qi.tqi_cw_max = params->cw_max; | |
0f245ed2 | 596 | qi.tqi_burst_time = params->txop * 32; |
cd2c5486 | 597 | |
e0d687bd | 598 | ATH5K_DBG(ah, ATH5K_DEBUG_ANY, |
cd2c5486 BR |
599 | "Configure tx [queue %d], " |
600 | "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", | |
601 | queue, params->aifs, params->cw_min, | |
602 | params->cw_max, params->txop); | |
603 | ||
604 | if (ath5k_hw_set_tx_queueprops(ah, queue, &qi)) { | |
e0d687bd | 605 | ATH5K_ERR(ah, |
cd2c5486 BR |
606 | "Unable to update hardware queue %u!\n", queue); |
607 | ret = -EIO; | |
608 | } else | |
609 | ath5k_hw_reset_tx_queue(ah, queue); | |
610 | ||
e0d687bd | 611 | mutex_unlock(&ah->lock); |
cd2c5486 BR |
612 | |
613 | return ret; | |
614 | } | |
615 | ||
616 | ||
617 | static u64 | |
37a41b4a | 618 | ath5k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
cd2c5486 | 619 | { |
e0d687bd | 620 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 621 | |
e0d687bd | 622 | return ath5k_hw_get_tsf64(ah); |
cd2c5486 BR |
623 | } |
624 | ||
625 | ||
626 | static void | |
37a41b4a | 627 | ath5k_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u64 tsf) |
cd2c5486 | 628 | { |
e0d687bd | 629 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 630 | |
e0d687bd | 631 | ath5k_hw_set_tsf64(ah, tsf); |
cd2c5486 BR |
632 | } |
633 | ||
634 | ||
635 | static void | |
37a41b4a | 636 | ath5k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) |
cd2c5486 | 637 | { |
e0d687bd | 638 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
639 | |
640 | /* | |
641 | * in IBSS mode we need to update the beacon timers too. | |
642 | * this will also reset the TSF if we call it with 0 | |
643 | */ | |
e0d687bd PR |
644 | if (ah->opmode == NL80211_IFTYPE_ADHOC) |
645 | ath5k_beacon_update_timers(ah, 0); | |
cd2c5486 | 646 | else |
e0d687bd | 647 | ath5k_hw_reset_tsf(ah); |
cd2c5486 BR |
648 | } |
649 | ||
650 | ||
651 | static int | |
652 | ath5k_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey) | |
653 | { | |
e0d687bd | 654 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 655 | struct ieee80211_conf *conf = &hw->conf; |
e0d687bd | 656 | struct ath_common *common = ath5k_hw_common(ah); |
cd2c5486 BR |
657 | struct ath_cycle_counters *cc = &common->cc_survey; |
658 | unsigned int div = common->clockrate * 1000; | |
659 | ||
660 | if (idx != 0) | |
661 | return -ENOENT; | |
662 | ||
663 | spin_lock_bh(&common->cc_lock); | |
664 | ath_hw_cycle_counters_update(common); | |
665 | if (cc->cycles > 0) { | |
e0d687bd PR |
666 | ah->survey.channel_time += cc->cycles / div; |
667 | ah->survey.channel_time_busy += cc->rx_busy / div; | |
668 | ah->survey.channel_time_rx += cc->rx_frame / div; | |
669 | ah->survey.channel_time_tx += cc->tx_frame / div; | |
cd2c5486 BR |
670 | } |
671 | memset(cc, 0, sizeof(*cc)); | |
672 | spin_unlock_bh(&common->cc_lock); | |
673 | ||
e0d687bd | 674 | memcpy(survey, &ah->survey, sizeof(*survey)); |
cd2c5486 BR |
675 | |
676 | survey->channel = conf->channel; | |
e0d687bd | 677 | survey->noise = ah->ah_noise_floor; |
cd2c5486 BR |
678 | survey->filled = SURVEY_INFO_NOISE_DBM | |
679 | SURVEY_INFO_CHANNEL_TIME | | |
680 | SURVEY_INFO_CHANNEL_TIME_BUSY | | |
681 | SURVEY_INFO_CHANNEL_TIME_RX | | |
682 | SURVEY_INFO_CHANNEL_TIME_TX; | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | ||
688 | /** | |
689 | * ath5k_set_coverage_class - Set IEEE 802.11 coverage class | |
690 | * | |
691 | * @hw: struct ieee80211_hw pointer | |
692 | * @coverage_class: IEEE 802.11 coverage class number | |
693 | * | |
694 | * Mac80211 callback. Sets slot time, ACK timeout and CTS timeout for given | |
695 | * coverage class. The values are persistent, they are restored after device | |
696 | * reset. | |
697 | */ | |
698 | static void | |
699 | ath5k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class) | |
700 | { | |
e0d687bd | 701 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 702 | |
e0d687bd PR |
703 | mutex_lock(&ah->lock); |
704 | ath5k_hw_set_coverage_class(ah, coverage_class); | |
705 | mutex_unlock(&ah->lock); | |
cd2c5486 BR |
706 | } |
707 | ||
708 | ||
709 | static int | |
710 | ath5k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) | |
711 | { | |
e0d687bd | 712 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 BR |
713 | |
714 | if (tx_ant == 1 && rx_ant == 1) | |
e0d687bd | 715 | ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A); |
cd2c5486 | 716 | else if (tx_ant == 2 && rx_ant == 2) |
e0d687bd | 717 | ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B); |
cd2c5486 | 718 | else if ((tx_ant & 3) == 3 && (rx_ant & 3) == 3) |
e0d687bd | 719 | ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT); |
cd2c5486 BR |
720 | else |
721 | return -EINVAL; | |
722 | return 0; | |
723 | } | |
724 | ||
725 | ||
726 | static int | |
727 | ath5k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) | |
728 | { | |
e0d687bd | 729 | struct ath5k_hw *ah = hw->priv; |
cd2c5486 | 730 | |
e0d687bd | 731 | switch (ah->ah_ant_mode) { |
cd2c5486 BR |
732 | case AR5K_ANTMODE_FIXED_A: |
733 | *tx_ant = 1; *rx_ant = 1; break; | |
734 | case AR5K_ANTMODE_FIXED_B: | |
735 | *tx_ant = 2; *rx_ant = 2; break; | |
736 | case AR5K_ANTMODE_DEFAULT: | |
737 | *tx_ant = 3; *rx_ant = 3; break; | |
738 | } | |
739 | return 0; | |
740 | } | |
741 | ||
742 | ||
81266baf JL |
743 | static void ath5k_get_ringparam(struct ieee80211_hw *hw, |
744 | u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) | |
745 | { | |
e0d687bd | 746 | struct ath5k_hw *ah = hw->priv; |
81266baf | 747 | |
e0d687bd | 748 | *tx = ah->txqs[AR5K_TX_QUEUE_ID_DATA_MIN].txq_max; |
81266baf JL |
749 | |
750 | *tx_max = ATH5K_TXQ_LEN_MAX; | |
751 | *rx = *rx_max = ATH_RXBUF; | |
752 | } | |
753 | ||
754 | ||
755 | static int ath5k_set_ringparam(struct ieee80211_hw *hw, u32 tx, u32 rx) | |
756 | { | |
e0d687bd | 757 | struct ath5k_hw *ah = hw->priv; |
81266baf JL |
758 | u16 qnum; |
759 | ||
760 | /* only support setting tx ring size for now */ | |
761 | if (rx != ATH_RXBUF) | |
762 | return -EINVAL; | |
763 | ||
764 | /* restrict tx ring size min/max */ | |
765 | if (!tx || tx > ATH5K_TXQ_LEN_MAX) | |
766 | return -EINVAL; | |
767 | ||
e0d687bd PR |
768 | for (qnum = 0; qnum < ARRAY_SIZE(ah->txqs); qnum++) { |
769 | if (!ah->txqs[qnum].setup) | |
81266baf | 770 | continue; |
e0d687bd PR |
771 | if (ah->txqs[qnum].qnum < AR5K_TX_QUEUE_ID_DATA_MIN || |
772 | ah->txqs[qnum].qnum > AR5K_TX_QUEUE_ID_DATA_MAX) | |
81266baf JL |
773 | continue; |
774 | ||
e0d687bd PR |
775 | ah->txqs[qnum].txq_max = tx; |
776 | if (ah->txqs[qnum].txq_len >= ah->txqs[qnum].txq_max) | |
777 | ieee80211_stop_queue(hw, ah->txqs[qnum].qnum); | |
81266baf JL |
778 | } |
779 | ||
780 | return 0; | |
781 | } | |
782 | ||
783 | ||
cd2c5486 BR |
784 | const struct ieee80211_ops ath5k_hw_ops = { |
785 | .tx = ath5k_tx, | |
786 | .start = ath5k_start, | |
787 | .stop = ath5k_stop, | |
788 | .add_interface = ath5k_add_interface, | |
789 | /* .change_interface = not implemented */ | |
790 | .remove_interface = ath5k_remove_interface, | |
791 | .config = ath5k_config, | |
792 | .bss_info_changed = ath5k_bss_info_changed, | |
793 | .prepare_multicast = ath5k_prepare_multicast, | |
794 | .configure_filter = ath5k_configure_filter, | |
795 | /* .set_tim = not implemented */ | |
796 | .set_key = ath5k_set_key, | |
797 | /* .update_tkip_key = not implemented */ | |
798 | /* .hw_scan = not implemented */ | |
799 | .sw_scan_start = ath5k_sw_scan_start, | |
800 | .sw_scan_complete = ath5k_sw_scan_complete, | |
801 | .get_stats = ath5k_get_stats, | |
802 | /* .get_tkip_seq = not implemented */ | |
803 | /* .set_frag_threshold = not implemented */ | |
804 | /* .set_rts_threshold = not implemented */ | |
805 | /* .sta_add = not implemented */ | |
806 | /* .sta_remove = not implemented */ | |
807 | /* .sta_notify = not implemented */ | |
808 | .conf_tx = ath5k_conf_tx, | |
809 | .get_tsf = ath5k_get_tsf, | |
810 | .set_tsf = ath5k_set_tsf, | |
811 | .reset_tsf = ath5k_reset_tsf, | |
812 | /* .tx_last_beacon = not implemented */ | |
813 | /* .ampdu_action = not needed */ | |
814 | .get_survey = ath5k_get_survey, | |
815 | .set_coverage_class = ath5k_set_coverage_class, | |
816 | /* .rfkill_poll = not implemented */ | |
817 | /* .flush = not implemented */ | |
818 | /* .channel_switch = not implemented */ | |
819 | /* .napi_poll = not implemented */ | |
820 | .set_antenna = ath5k_set_antenna, | |
821 | .get_antenna = ath5k_get_antenna, | |
81266baf JL |
822 | .set_ringparam = ath5k_set_ringparam, |
823 | .get_ringparam = ath5k_get_ringparam, | |
cd2c5486 | 824 | }; |