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8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
51368bf7 | 8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 9 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of version 2 of the GNU General Public License as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
23 | * USA | |
24 | * | |
25 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 26 | * in the file called COPYING. |
8ca151b5 JB |
27 | * |
28 | * Contact Information: | |
29 | * Intel Linux Wireless <ilw@linux.intel.com> | |
30 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
31 | * | |
32 | * BSD LICENSE | |
33 | * | |
51368bf7 | 34 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 35 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
36 | * All rights reserved. |
37 | * | |
38 | * Redistribution and use in source and binary forms, with or without | |
39 | * modification, are permitted provided that the following conditions | |
40 | * are met: | |
41 | * | |
42 | * * Redistributions of source code must retain the above copyright | |
43 | * notice, this list of conditions and the following disclaimer. | |
44 | * * Redistributions in binary form must reproduce the above copyright | |
45 | * notice, this list of conditions and the following disclaimer in | |
46 | * the documentation and/or other materials provided with the | |
47 | * distribution. | |
48 | * * Neither the name Intel Corporation nor the names of its | |
49 | * contributors may be used to endorse or promote products derived | |
50 | * from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
53 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
54 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
55 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
56 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
57 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
58 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
59 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
60 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
61 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
62 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
63 | *****************************************************************************/ | |
64 | #include "iwl-trans.h" | |
8ca151b5 JB |
65 | #include "mvm.h" |
66 | #include "fw-api.h" | |
67 | ||
68 | /* | |
69 | * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler | |
70 | * | |
71 | * Copies the phy information in mvm->last_phy_info, it will be used when the | |
72 | * actual data will come from the fw in the next packet. | |
73 | */ | |
74 | int iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
75 | struct iwl_device_cmd *cmd) | |
76 | { | |
77 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
78 | ||
79 | memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info)); | |
80 | mvm->ampdu_ref++; | |
5fc0f76c ES |
81 | |
82 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
83 | if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { | |
84 | spin_lock(&mvm->drv_stats_lock); | |
85 | mvm->drv_rx_stats.ampdu_count++; | |
86 | spin_unlock(&mvm->drv_stats_lock); | |
87 | } | |
88 | #endif | |
89 | ||
8ca151b5 JB |
90 | return 0; |
91 | } | |
92 | ||
93 | /* | |
94 | * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211 | |
95 | * | |
96 | * Adds the rxb to a new skb and give it to mac80211 | |
97 | */ | |
98 | static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, | |
99 | struct ieee80211_hdr *hdr, u16 len, | |
100 | u32 ampdu_status, | |
101 | struct iwl_rx_cmd_buffer *rxb, | |
102 | struct ieee80211_rx_status *stats) | |
103 | { | |
104 | struct sk_buff *skb; | |
105 | unsigned int hdrlen, fraglen; | |
106 | ||
107 | /* Dont use dev_alloc_skb(), we'll have enough headroom once | |
108 | * ieee80211_hdr pulled. | |
109 | */ | |
110 | skb = alloc_skb(128, GFP_ATOMIC); | |
111 | if (!skb) { | |
112 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
113 | return; | |
114 | } | |
115 | /* If frame is small enough to fit in skb->head, pull it completely. | |
116 | * If not, only pull ieee80211_hdr so that splice() or TCP coalesce | |
117 | * are more efficient. | |
118 | */ | |
119 | hdrlen = (len <= skb_tailroom(skb)) ? len : sizeof(*hdr); | |
120 | ||
121 | memcpy(skb_put(skb, hdrlen), hdr, hdrlen); | |
122 | fraglen = len - hdrlen; | |
123 | ||
124 | if (fraglen) { | |
125 | int offset = (void *)hdr + hdrlen - | |
126 | rxb_addr(rxb) + rxb_offset(rxb); | |
127 | ||
128 | skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, | |
129 | fraglen, rxb->truesize); | |
130 | } | |
131 | ||
132 | memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats)); | |
133 | ||
f14d6b39 | 134 | ieee80211_rx(mvm->hw, skb); |
8ca151b5 JB |
135 | } |
136 | ||
a2d7b870 AA |
137 | /* |
138 | * iwl_mvm_get_signal_strength - use new rx PHY INFO API | |
17dbe564 AA |
139 | * values are reported by the fw as positive values - need to negate |
140 | * to obtain their dBM. Account for missing antennas by replacing 0 | |
141 | * values by -256dBm: practically 0 power and a non-feasible 8 bit value. | |
a2d7b870 | 142 | */ |
226eb8cd JB |
143 | static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, |
144 | struct iwl_rx_phy_info *phy_info, | |
145 | struct ieee80211_rx_status *rx_status) | |
a2d7b870 AA |
146 | { |
147 | int energy_a, energy_b, energy_c, max_energy; | |
148 | u32 val; | |
149 | ||
150 | val = | |
151 | le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]); | |
17dbe564 AA |
152 | energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >> |
153 | IWL_RX_INFO_ENERGY_ANT_A_POS; | |
2cddddc5 | 154 | energy_a = energy_a ? -energy_a : S8_MIN; |
17dbe564 AA |
155 | energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >> |
156 | IWL_RX_INFO_ENERGY_ANT_B_POS; | |
2cddddc5 | 157 | energy_b = energy_b ? -energy_b : S8_MIN; |
17dbe564 AA |
158 | energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >> |
159 | IWL_RX_INFO_ENERGY_ANT_C_POS; | |
2cddddc5 | 160 | energy_c = energy_c ? -energy_c : S8_MIN; |
a2d7b870 AA |
161 | max_energy = max(energy_a, energy_b); |
162 | max_energy = max(max_energy, energy_c); | |
163 | ||
164 | IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n", | |
165 | energy_a, energy_b, energy_c, max_energy); | |
166 | ||
226eb8cd JB |
167 | rx_status->signal = max_energy; |
168 | rx_status->chains = (le16_to_cpu(phy_info->phy_flags) & | |
169 | RX_RES_PHY_FLAGS_ANTENNA) | |
170 | >> RX_RES_PHY_FLAGS_ANTENNA_POS; | |
171 | rx_status->chain_signal[0] = energy_a; | |
172 | rx_status->chain_signal[1] = energy_b; | |
173 | rx_status->chain_signal[2] = energy_c; | |
a2d7b870 AA |
174 | } |
175 | ||
8ca151b5 JB |
176 | /* |
177 | * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format | |
178 | * @mvm: the mvm object | |
179 | * @hdr: 80211 header | |
180 | * @stats: status in mac80211's format | |
181 | * @rx_pkt_status: status coming from fw | |
182 | * | |
183 | * returns non 0 value if the packet should be dropped | |
184 | */ | |
185 | static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm, | |
186 | struct ieee80211_hdr *hdr, | |
187 | struct ieee80211_rx_status *stats, | |
188 | u32 rx_pkt_status) | |
189 | { | |
190 | if (!ieee80211_has_protected(hdr->frame_control) || | |
191 | (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == | |
192 | RX_MPDU_RES_STATUS_SEC_NO_ENC) | |
193 | return 0; | |
194 | ||
195 | /* packet was encrypted with unknown alg */ | |
196 | if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == | |
197 | RX_MPDU_RES_STATUS_SEC_ENC_ERR) | |
198 | return 0; | |
199 | ||
200 | switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) { | |
201 | case RX_MPDU_RES_STATUS_SEC_CCM_ENC: | |
202 | /* alg is CCM: check MIC only */ | |
203 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) | |
204 | return -1; | |
205 | ||
206 | stats->flag |= RX_FLAG_DECRYPTED; | |
207 | IWL_DEBUG_WEP(mvm, "hw decrypted CCMP successfully\n"); | |
208 | return 0; | |
209 | ||
210 | case RX_MPDU_RES_STATUS_SEC_TKIP_ENC: | |
211 | /* Don't drop the frame and decrypt it in SW */ | |
212 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK)) | |
213 | return 0; | |
214 | /* fall through if TTAK OK */ | |
215 | ||
216 | case RX_MPDU_RES_STATUS_SEC_WEP_ENC: | |
217 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK)) | |
218 | return -1; | |
219 | ||
220 | stats->flag |= RX_FLAG_DECRYPTED; | |
221 | return 0; | |
222 | ||
e36e5433 MS |
223 | case RX_MPDU_RES_STATUS_SEC_EXT_ENC: |
224 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) | |
225 | return -1; | |
226 | stats->flag |= RX_FLAG_DECRYPTED; | |
227 | return 0; | |
228 | ||
8ca151b5 JB |
229 | default: |
230 | IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status); | |
231 | } | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
236 | /* | |
237 | * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler | |
238 | * | |
239 | * Handles the actual data of the Rx packet from the fw | |
240 | */ | |
241 | int iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
242 | struct iwl_device_cmd *cmd) | |
243 | { | |
244 | struct ieee80211_hdr *hdr; | |
245 | struct ieee80211_rx_status rx_status = {}; | |
246 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
247 | struct iwl_rx_phy_info *phy_info; | |
248 | struct iwl_rx_mpdu_res_start *rx_res; | |
361dbec8 | 249 | struct ieee80211_sta *sta; |
8ca151b5 JB |
250 | u32 len; |
251 | u32 ampdu_status; | |
252 | u32 rate_n_flags; | |
253 | u32 rx_pkt_status; | |
254 | ||
255 | phy_info = &mvm->last_phy_info; | |
256 | rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data; | |
257 | hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res)); | |
258 | len = le16_to_cpu(rx_res->byte_count); | |
259 | rx_pkt_status = le32_to_cpup((__le32 *) | |
260 | (pkt->data + sizeof(*rx_res) + len)); | |
261 | ||
262 | memset(&rx_status, 0, sizeof(rx_status)); | |
263 | ||
264 | /* | |
265 | * drop the packet if it has failed being decrypted by HW | |
266 | */ | |
267 | if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, &rx_status, rx_pkt_status)) { | |
268 | IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n", | |
269 | rx_pkt_status); | |
270 | return 0; | |
271 | } | |
272 | ||
273 | if ((unlikely(phy_info->cfg_phy_cnt > 20))) { | |
274 | IWL_DEBUG_DROP(mvm, "dsp size out of range [0,20]: %d\n", | |
275 | phy_info->cfg_phy_cnt); | |
276 | return 0; | |
277 | } | |
278 | ||
fb8b8ee1 JB |
279 | /* |
280 | * Keep packets with CRC errors (and with overrun) for monitor mode | |
281 | * (otherwise the firmware discards them) but mark them as bad. | |
282 | */ | |
8ca151b5 JB |
283 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) || |
284 | !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) { | |
285 | IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status); | |
fb8b8ee1 | 286 | rx_status.flag |= RX_FLAG_FAILED_FCS_CRC; |
8ca151b5 JB |
287 | } |
288 | ||
289 | /* This will be used in several places later */ | |
290 | rate_n_flags = le32_to_cpu(phy_info->rate_n_flags); | |
291 | ||
292 | /* rx_status carries information about the packet to mac80211 */ | |
293 | rx_status.mactime = le64_to_cpu(phy_info->timestamp); | |
d2931bbd | 294 | rx_status.device_timestamp = le32_to_cpu(phy_info->system_timestamp); |
8ca151b5 JB |
295 | rx_status.band = |
296 | (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? | |
297 | IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
298 | rx_status.freq = | |
299 | ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel), | |
300 | rx_status.band); | |
301 | /* | |
302 | * TSF as indicated by the fw is at INA time, but mac80211 expects the | |
303 | * TSF at the beginning of the MPDU. | |
304 | */ | |
305 | /*rx_status.flag |= RX_FLAG_MACTIME_MPDU;*/ | |
306 | ||
3fe47dca | 307 | iwl_mvm_get_signal_strength(mvm, phy_info, &rx_status); |
8ca151b5 JB |
308 | |
309 | IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status.signal, | |
310 | (unsigned long long)rx_status.mactime); | |
311 | ||
361dbec8 ES |
312 | rcu_read_lock(); |
313 | /* | |
314 | * We have tx blocked stations (with CS bit). If we heard frames from | |
315 | * a blocked station on a new channel we can TX to it again. | |
316 | */ | |
317 | if (unlikely(mvm->csa_tx_block_bcn_timeout)) { | |
318 | sta = ieee80211_find_sta( | |
319 | rcu_dereference(mvm->csa_tx_blocked_vif), hdr->addr2); | |
320 | if (sta) | |
321 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false); | |
322 | } | |
323 | ||
324 | /* This is fine since we don't support multiple AP interfaces */ | |
325 | sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); | |
326 | if (sta) { | |
327 | struct iwl_mvm_sta *mvmsta; | |
328 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
329 | rs_update_last_rssi(mvm, &mvmsta->lq_sta, | |
330 | &rx_status); | |
331 | } | |
332 | ||
333 | rcu_read_unlock(); | |
334 | ||
8ca151b5 JB |
335 | /* set the preamble flag if appropriate */ |
336 | if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE)) | |
337 | rx_status.flag |= RX_FLAG_SHORTPRE; | |
338 | ||
339 | if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { | |
340 | /* | |
341 | * We know which subframes of an A-MPDU belong | |
342 | * together since we get a single PHY response | |
343 | * from the firmware for all of them | |
344 | */ | |
345 | rx_status.flag |= RX_FLAG_AMPDU_DETAILS; | |
346 | rx_status.ampdu_reference = mvm->ampdu_ref; | |
347 | } | |
348 | ||
349 | /* Set up the HT phy flags */ | |
350 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
351 | case RATE_MCS_CHAN_WIDTH_20: | |
352 | break; | |
353 | case RATE_MCS_CHAN_WIDTH_40: | |
354 | rx_status.flag |= RX_FLAG_40MHZ; | |
355 | break; | |
356 | case RATE_MCS_CHAN_WIDTH_80: | |
1b8d242a | 357 | rx_status.vht_flag |= RX_VHT_FLAG_80MHZ; |
8ca151b5 JB |
358 | break; |
359 | case RATE_MCS_CHAN_WIDTH_160: | |
1b8d242a | 360 | rx_status.vht_flag |= RX_VHT_FLAG_160MHZ; |
8ca151b5 JB |
361 | break; |
362 | } | |
363 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
364 | rx_status.flag |= RX_FLAG_SHORT_GI; | |
365 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) | |
366 | rx_status.flag |= RX_FLAG_HT_GF; | |
7b1dd048 EG |
367 | if (rate_n_flags & RATE_MCS_LDPC_MSK) |
368 | rx_status.flag |= RX_FLAG_LDPC; | |
8ca151b5 | 369 | if (rate_n_flags & RATE_MCS_HT_MSK) { |
7b1dd048 EG |
370 | u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >> |
371 | RATE_MCS_STBC_POS; | |
8ca151b5 JB |
372 | rx_status.flag |= RX_FLAG_HT; |
373 | rx_status.rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; | |
7b1dd048 | 374 | rx_status.flag |= stbc << RX_FLAG_STBC_SHIFT; |
8ca151b5 | 375 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { |
7b1dd048 EG |
376 | u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >> |
377 | RATE_MCS_STBC_POS; | |
8ca151b5 JB |
378 | rx_status.vht_nss = |
379 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> | |
380 | RATE_VHT_MCS_NSS_POS) + 1; | |
381 | rx_status.rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; | |
382 | rx_status.flag |= RX_FLAG_VHT; | |
7b1dd048 | 383 | rx_status.flag |= stbc << RX_FLAG_STBC_SHIFT; |
95e05ab7 EG |
384 | if (rate_n_flags & RATE_MCS_BF_MSK) |
385 | rx_status.vht_flag |= RX_VHT_FLAG_BF; | |
8ca151b5 JB |
386 | } else { |
387 | rx_status.rate_idx = | |
388 | iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, | |
389 | rx_status.band); | |
390 | } | |
391 | ||
5fc0f76c ES |
392 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
393 | iwl_mvm_update_frame_stats(mvm, &mvm->drv_rx_stats, rate_n_flags, | |
394 | rx_status.flag & RX_FLAG_AMPDU_DETAILS); | |
395 | #endif | |
8ca151b5 JB |
396 | iwl_mvm_pass_packet_to_mac80211(mvm, hdr, len, ampdu_status, |
397 | rxb, &rx_status); | |
398 | return 0; | |
399 | } | |
9ee718aa | 400 | |
3848ab66 MG |
401 | static void iwl_mvm_update_rx_statistics(struct iwl_mvm *mvm, |
402 | struct iwl_notif_statistics *stats) | |
403 | { | |
404 | /* | |
405 | * NOTE FW aggregates the statistics - BUT the statistics are cleared | |
406 | * when the driver issues REPLY_STATISTICS_CMD 0x9c with CLEAR_STATS | |
407 | * bit set. | |
408 | */ | |
409 | lockdep_assert_held(&mvm->mutex); | |
410 | memcpy(&mvm->rx_stats, &stats->rx, sizeof(struct mvm_statistics_rx)); | |
411 | } | |
412 | ||
a20fd398 AO |
413 | struct iwl_mvm_stat_data { |
414 | struct iwl_notif_statistics *stats; | |
415 | struct iwl_mvm *mvm; | |
416 | }; | |
417 | ||
418 | static void iwl_mvm_stat_iterator(void *_data, u8 *mac, | |
419 | struct ieee80211_vif *vif) | |
420 | { | |
421 | struct iwl_mvm_stat_data *data = _data; | |
422 | struct iwl_notif_statistics *stats = data->stats; | |
423 | struct iwl_mvm *mvm = data->mvm; | |
424 | int sig = -stats->general.beacon_filter_average_energy; | |
425 | int last_event; | |
426 | int thold = vif->bss_conf.cqm_rssi_thold; | |
427 | int hyst = vif->bss_conf.cqm_rssi_hyst; | |
428 | u16 id = le32_to_cpu(stats->rx.general.mac_id); | |
429 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
430 | ||
431 | if (mvmvif->id != id) | |
432 | return; | |
433 | ||
434 | if (vif->type != NL80211_IFTYPE_STATION) | |
435 | return; | |
436 | ||
437 | mvmvif->bf_data.ave_beacon_signal = sig; | |
438 | ||
911222b5 AO |
439 | /* BT Coex */ |
440 | if (mvmvif->bf_data.bt_coex_min_thold != | |
441 | mvmvif->bf_data.bt_coex_max_thold) { | |
442 | last_event = mvmvif->bf_data.last_bt_coex_event; | |
443 | if (sig > mvmvif->bf_data.bt_coex_max_thold && | |
444 | (last_event <= mvmvif->bf_data.bt_coex_min_thold || | |
445 | last_event == 0)) { | |
446 | mvmvif->bf_data.last_bt_coex_event = sig; | |
447 | IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n", | |
448 | sig); | |
449 | iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH); | |
450 | } else if (sig < mvmvif->bf_data.bt_coex_min_thold && | |
451 | (last_event >= mvmvif->bf_data.bt_coex_max_thold || | |
452 | last_event == 0)) { | |
453 | mvmvif->bf_data.last_bt_coex_event = sig; | |
454 | IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n", | |
455 | sig); | |
456 | iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW); | |
457 | } | |
458 | } | |
459 | ||
a20fd398 AO |
460 | if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) |
461 | return; | |
462 | ||
463 | /* CQM Notification */ | |
464 | last_event = mvmvif->bf_data.last_cqm_event; | |
465 | if (thold && sig < thold && (last_event == 0 || | |
466 | sig < last_event - hyst)) { | |
467 | mvmvif->bf_data.last_cqm_event = sig; | |
468 | IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", | |
469 | sig); | |
470 | ieee80211_cqm_rssi_notify( | |
471 | vif, | |
472 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
473 | GFP_KERNEL); | |
474 | } else if (sig > thold && | |
475 | (last_event == 0 || sig > last_event + hyst)) { | |
476 | mvmvif->bf_data.last_cqm_event = sig; | |
477 | IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", | |
478 | sig); | |
479 | ieee80211_cqm_rssi_notify( | |
480 | vif, | |
481 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
482 | GFP_KERNEL); | |
483 | } | |
484 | } | |
485 | ||
9ee718aa EL |
486 | /* |
487 | * iwl_mvm_rx_statistics - STATISTICS_NOTIFICATION handler | |
488 | * | |
489 | * TODO: This handler is implemented partially. | |
9ee718aa EL |
490 | */ |
491 | int iwl_mvm_rx_statistics(struct iwl_mvm *mvm, | |
492 | struct iwl_rx_cmd_buffer *rxb, | |
493 | struct iwl_device_cmd *cmd) | |
494 | { | |
495 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
496 | struct iwl_notif_statistics *stats = (void *)&pkt->data; | |
497 | struct mvm_statistics_general_common *common = &stats->general.common; | |
a20fd398 AO |
498 | struct iwl_mvm_stat_data data = { |
499 | .stats = stats, | |
500 | .mvm = mvm, | |
501 | }; | |
9ee718aa | 502 | |
fd1f7550 | 503 | iwl_mvm_tt_temp_changed(mvm, le32_to_cpu(common->temperature)); |
7280d1f0 | 504 | |
3848ab66 | 505 | iwl_mvm_update_rx_statistics(mvm, stats); |
9ee718aa | 506 | |
a20fd398 AO |
507 | ieee80211_iterate_active_interfaces(mvm->hw, |
508 | IEEE80211_IFACE_ITER_NORMAL, | |
509 | iwl_mvm_stat_iterator, | |
510 | &data); | |
9ee718aa EL |
511 | return 0; |
512 | } |