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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. |
777c9b6b | 9 | * Copyright(c) 2013 - 2015 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. |
777c9b6b | 35 | * Copyright(c) 2013 - 2015 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, | |
d0963b5d | 99 | struct sk_buff *skb, |
8ca151b5 | 100 | struct ieee80211_hdr *hdr, u16 len, |
eb96ccb1 | 101 | u32 ampdu_status, u8 crypt_len, |
d0963b5d | 102 | struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 | 103 | { |
8ca151b5 JB |
104 | unsigned int hdrlen, fraglen; |
105 | ||
8ca151b5 | 106 | /* If frame is small enough to fit in skb->head, pull it completely. |
3771a890 JB |
107 | * If not, only pull ieee80211_hdr (including crypto if present, and |
108 | * an additional 8 bytes for SNAP/ethertype, see below) so that | |
109 | * splice() or TCP coalesce are more efficient. | |
110 | * | |
111 | * Since, in addition, ieee80211_data_to_8023() always pull in at | |
112 | * least 8 bytes (possibly more for mesh) we can do the same here | |
113 | * to save the cost of doing it later. That still doesn't pull in | |
114 | * the actual IP header since the typical case has a SNAP header. | |
115 | * If the latter changes (there are efforts in the standards group | |
116 | * to do so) we should revisit this and ieee80211_data_to_8023(). | |
8ca151b5 | 117 | */ |
3771a890 JB |
118 | hdrlen = (len <= skb_tailroom(skb)) ? len : |
119 | sizeof(*hdr) + crypt_len + 8; | |
8ca151b5 JB |
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 | ||
f14d6b39 | 132 | ieee80211_rx(mvm->hw, skb); |
8ca151b5 JB |
133 | } |
134 | ||
a2d7b870 AA |
135 | /* |
136 | * iwl_mvm_get_signal_strength - use new rx PHY INFO API | |
17dbe564 AA |
137 | * values are reported by the fw as positive values - need to negate |
138 | * to obtain their dBM. Account for missing antennas by replacing 0 | |
139 | * values by -256dBm: practically 0 power and a non-feasible 8 bit value. | |
a2d7b870 | 140 | */ |
226eb8cd JB |
141 | static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, |
142 | struct iwl_rx_phy_info *phy_info, | |
143 | struct ieee80211_rx_status *rx_status) | |
a2d7b870 AA |
144 | { |
145 | int energy_a, energy_b, energy_c, max_energy; | |
146 | u32 val; | |
147 | ||
148 | val = | |
149 | le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]); | |
17dbe564 AA |
150 | energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >> |
151 | IWL_RX_INFO_ENERGY_ANT_A_POS; | |
2cddddc5 | 152 | energy_a = energy_a ? -energy_a : S8_MIN; |
17dbe564 AA |
153 | energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >> |
154 | IWL_RX_INFO_ENERGY_ANT_B_POS; | |
2cddddc5 | 155 | energy_b = energy_b ? -energy_b : S8_MIN; |
17dbe564 AA |
156 | energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >> |
157 | IWL_RX_INFO_ENERGY_ANT_C_POS; | |
2cddddc5 | 158 | energy_c = energy_c ? -energy_c : S8_MIN; |
a2d7b870 AA |
159 | max_energy = max(energy_a, energy_b); |
160 | max_energy = max(max_energy, energy_c); | |
161 | ||
162 | IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n", | |
163 | energy_a, energy_b, energy_c, max_energy); | |
164 | ||
226eb8cd JB |
165 | rx_status->signal = max_energy; |
166 | rx_status->chains = (le16_to_cpu(phy_info->phy_flags) & | |
167 | RX_RES_PHY_FLAGS_ANTENNA) | |
168 | >> RX_RES_PHY_FLAGS_ANTENNA_POS; | |
169 | rx_status->chain_signal[0] = energy_a; | |
170 | rx_status->chain_signal[1] = energy_b; | |
171 | rx_status->chain_signal[2] = energy_c; | |
a2d7b870 AA |
172 | } |
173 | ||
8ca151b5 JB |
174 | /* |
175 | * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format | |
176 | * @mvm: the mvm object | |
177 | * @hdr: 80211 header | |
178 | * @stats: status in mac80211's format | |
179 | * @rx_pkt_status: status coming from fw | |
180 | * | |
181 | * returns non 0 value if the packet should be dropped | |
182 | */ | |
183 | static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm, | |
184 | struct ieee80211_hdr *hdr, | |
185 | struct ieee80211_rx_status *stats, | |
eb96ccb1 JB |
186 | u32 rx_pkt_status, |
187 | u8 *crypt_len) | |
8ca151b5 JB |
188 | { |
189 | if (!ieee80211_has_protected(hdr->frame_control) || | |
190 | (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == | |
191 | RX_MPDU_RES_STATUS_SEC_NO_ENC) | |
192 | return 0; | |
193 | ||
194 | /* packet was encrypted with unknown alg */ | |
195 | if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == | |
196 | RX_MPDU_RES_STATUS_SEC_ENC_ERR) | |
197 | return 0; | |
198 | ||
199 | switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) { | |
200 | case RX_MPDU_RES_STATUS_SEC_CCM_ENC: | |
201 | /* alg is CCM: check MIC only */ | |
202 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) | |
203 | return -1; | |
204 | ||
205 | stats->flag |= RX_FLAG_DECRYPTED; | |
206 | IWL_DEBUG_WEP(mvm, "hw decrypted CCMP successfully\n"); | |
eb96ccb1 | 207 | *crypt_len = IEEE80211_CCMP_HDR_LEN; |
8ca151b5 JB |
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; | |
eb96ccb1 | 214 | *crypt_len = IEEE80211_TKIP_IV_LEN; |
8ca151b5 JB |
215 | /* fall through if TTAK OK */ |
216 | ||
217 | case RX_MPDU_RES_STATUS_SEC_WEP_ENC: | |
218 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK)) | |
219 | return -1; | |
220 | ||
221 | stats->flag |= RX_FLAG_DECRYPTED; | |
eb96ccb1 JB |
222 | if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == |
223 | RX_MPDU_RES_STATUS_SEC_WEP_ENC) | |
224 | *crypt_len = IEEE80211_WEP_IV_LEN; | |
8ca151b5 JB |
225 | return 0; |
226 | ||
e36e5433 MS |
227 | case RX_MPDU_RES_STATUS_SEC_EXT_ENC: |
228 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) | |
229 | return -1; | |
230 | stats->flag |= RX_FLAG_DECRYPTED; | |
231 | return 0; | |
232 | ||
8ca151b5 JB |
233 | default: |
234 | IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status); | |
235 | } | |
236 | ||
237 | return 0; | |
238 | } | |
239 | ||
240 | /* | |
241 | * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler | |
242 | * | |
243 | * Handles the actual data of the Rx packet from the fw | |
244 | */ | |
245 | int iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
246 | struct iwl_device_cmd *cmd) | |
247 | { | |
248 | struct ieee80211_hdr *hdr; | |
d0963b5d | 249 | struct ieee80211_rx_status *rx_status; |
8ca151b5 JB |
250 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
251 | struct iwl_rx_phy_info *phy_info; | |
252 | struct iwl_rx_mpdu_res_start *rx_res; | |
361dbec8 | 253 | struct ieee80211_sta *sta; |
d0963b5d | 254 | struct sk_buff *skb; |
8ca151b5 JB |
255 | u32 len; |
256 | u32 ampdu_status; | |
257 | u32 rate_n_flags; | |
258 | u32 rx_pkt_status; | |
eb96ccb1 | 259 | u8 crypt_len = 0; |
8ca151b5 JB |
260 | |
261 | phy_info = &mvm->last_phy_info; | |
262 | rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data; | |
263 | hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res)); | |
264 | len = le16_to_cpu(rx_res->byte_count); | |
265 | rx_pkt_status = le32_to_cpup((__le32 *) | |
266 | (pkt->data + sizeof(*rx_res) + len)); | |
267 | ||
d0963b5d JB |
268 | /* Dont use dev_alloc_skb(), we'll have enough headroom once |
269 | * ieee80211_hdr pulled. | |
270 | */ | |
271 | skb = alloc_skb(128, GFP_ATOMIC); | |
272 | if (!skb) { | |
273 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
274 | return 0; | |
275 | } | |
276 | ||
277 | rx_status = IEEE80211_SKB_RXCB(skb); | |
8ca151b5 JB |
278 | |
279 | /* | |
280 | * drop the packet if it has failed being decrypted by HW | |
281 | */ | |
eb96ccb1 JB |
282 | if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status, |
283 | &crypt_len)) { | |
8ca151b5 JB |
284 | IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n", |
285 | rx_pkt_status); | |
d0963b5d | 286 | kfree_skb(skb); |
8ca151b5 JB |
287 | return 0; |
288 | } | |
289 | ||
290 | if ((unlikely(phy_info->cfg_phy_cnt > 20))) { | |
291 | IWL_DEBUG_DROP(mvm, "dsp size out of range [0,20]: %d\n", | |
292 | phy_info->cfg_phy_cnt); | |
d0963b5d | 293 | kfree_skb(skb); |
8ca151b5 JB |
294 | return 0; |
295 | } | |
296 | ||
fb8b8ee1 JB |
297 | /* |
298 | * Keep packets with CRC errors (and with overrun) for monitor mode | |
299 | * (otherwise the firmware discards them) but mark them as bad. | |
300 | */ | |
8ca151b5 JB |
301 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) || |
302 | !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) { | |
303 | IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status); | |
d0963b5d | 304 | rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; |
8ca151b5 JB |
305 | } |
306 | ||
307 | /* This will be used in several places later */ | |
308 | rate_n_flags = le32_to_cpu(phy_info->rate_n_flags); | |
309 | ||
310 | /* rx_status carries information about the packet to mac80211 */ | |
d0963b5d JB |
311 | rx_status->mactime = le64_to_cpu(phy_info->timestamp); |
312 | rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp); | |
313 | rx_status->band = | |
8ca151b5 JB |
314 | (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? |
315 | IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
d0963b5d | 316 | rx_status->freq = |
8ca151b5 | 317 | ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel), |
d0963b5d | 318 | rx_status->band); |
8ca151b5 JB |
319 | /* |
320 | * TSF as indicated by the fw is at INA time, but mac80211 expects the | |
321 | * TSF at the beginning of the MPDU. | |
322 | */ | |
d0963b5d | 323 | /*rx_status->flag |= RX_FLAG_MACTIME_MPDU;*/ |
8ca151b5 | 324 | |
d0963b5d | 325 | iwl_mvm_get_signal_strength(mvm, phy_info, rx_status); |
8ca151b5 | 326 | |
d0963b5d JB |
327 | IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal, |
328 | (unsigned long long)rx_status->mactime); | |
8ca151b5 | 329 | |
361dbec8 ES |
330 | rcu_read_lock(); |
331 | /* | |
332 | * We have tx blocked stations (with CS bit). If we heard frames from | |
333 | * a blocked station on a new channel we can TX to it again. | |
334 | */ | |
335 | if (unlikely(mvm->csa_tx_block_bcn_timeout)) { | |
336 | sta = ieee80211_find_sta( | |
337 | rcu_dereference(mvm->csa_tx_blocked_vif), hdr->addr2); | |
338 | if (sta) | |
339 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false); | |
340 | } | |
341 | ||
342 | /* This is fine since we don't support multiple AP interfaces */ | |
343 | sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); | |
344 | if (sta) { | |
345 | struct iwl_mvm_sta *mvmsta; | |
346 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
d0963b5d | 347 | rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status); |
361dbec8 ES |
348 | } |
349 | ||
350 | rcu_read_unlock(); | |
351 | ||
8ca151b5 JB |
352 | /* set the preamble flag if appropriate */ |
353 | if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE)) | |
d0963b5d | 354 | rx_status->flag |= RX_FLAG_SHORTPRE; |
8ca151b5 JB |
355 | |
356 | if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { | |
357 | /* | |
358 | * We know which subframes of an A-MPDU belong | |
359 | * together since we get a single PHY response | |
360 | * from the firmware for all of them | |
361 | */ | |
d0963b5d JB |
362 | rx_status->flag |= RX_FLAG_AMPDU_DETAILS; |
363 | rx_status->ampdu_reference = mvm->ampdu_ref; | |
8ca151b5 JB |
364 | } |
365 | ||
366 | /* Set up the HT phy flags */ | |
367 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
368 | case RATE_MCS_CHAN_WIDTH_20: | |
369 | break; | |
370 | case RATE_MCS_CHAN_WIDTH_40: | |
d0963b5d | 371 | rx_status->flag |= RX_FLAG_40MHZ; |
8ca151b5 JB |
372 | break; |
373 | case RATE_MCS_CHAN_WIDTH_80: | |
d0963b5d | 374 | rx_status->vht_flag |= RX_VHT_FLAG_80MHZ; |
8ca151b5 JB |
375 | break; |
376 | case RATE_MCS_CHAN_WIDTH_160: | |
d0963b5d | 377 | rx_status->vht_flag |= RX_VHT_FLAG_160MHZ; |
8ca151b5 JB |
378 | break; |
379 | } | |
380 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
d0963b5d | 381 | rx_status->flag |= RX_FLAG_SHORT_GI; |
8ca151b5 | 382 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) |
d0963b5d | 383 | rx_status->flag |= RX_FLAG_HT_GF; |
7b1dd048 | 384 | if (rate_n_flags & RATE_MCS_LDPC_MSK) |
d0963b5d | 385 | rx_status->flag |= RX_FLAG_LDPC; |
8ca151b5 | 386 | if (rate_n_flags & RATE_MCS_HT_MSK) { |
7b1dd048 EG |
387 | u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >> |
388 | RATE_MCS_STBC_POS; | |
d0963b5d JB |
389 | rx_status->flag |= RX_FLAG_HT; |
390 | rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; | |
391 | rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT; | |
8ca151b5 | 392 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { |
7b1dd048 EG |
393 | u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >> |
394 | RATE_MCS_STBC_POS; | |
d0963b5d | 395 | rx_status->vht_nss = |
8ca151b5 JB |
396 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> |
397 | RATE_VHT_MCS_NSS_POS) + 1; | |
d0963b5d JB |
398 | rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; |
399 | rx_status->flag |= RX_FLAG_VHT; | |
400 | rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT; | |
95e05ab7 | 401 | if (rate_n_flags & RATE_MCS_BF_MSK) |
d0963b5d | 402 | rx_status->vht_flag |= RX_VHT_FLAG_BF; |
8ca151b5 | 403 | } else { |
d0963b5d | 404 | rx_status->rate_idx = |
8ca151b5 | 405 | iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, |
d0963b5d | 406 | rx_status->band); |
8ca151b5 JB |
407 | } |
408 | ||
5fc0f76c | 409 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
2f15a829 | 410 | iwl_mvm_update_frame_stats(mvm, rate_n_flags, |
d0963b5d | 411 | rx_status->flag & RX_FLAG_AMPDU_DETAILS); |
5fc0f76c | 412 | #endif |
eb96ccb1 JB |
413 | iwl_mvm_pass_packet_to_mac80211(mvm, skb, hdr, len, ampdu_status, |
414 | crypt_len, rxb); | |
8ca151b5 JB |
415 | return 0; |
416 | } | |
9ee718aa | 417 | |
3848ab66 | 418 | static void iwl_mvm_update_rx_statistics(struct iwl_mvm *mvm, |
777c9b6b | 419 | struct mvm_statistics_rx *rx_stats) |
3848ab66 | 420 | { |
3848ab66 | 421 | lockdep_assert_held(&mvm->mutex); |
777c9b6b JB |
422 | |
423 | mvm->rx_stats = *rx_stats; | |
3848ab66 MG |
424 | } |
425 | ||
a20fd398 | 426 | struct iwl_mvm_stat_data { |
a20fd398 | 427 | struct iwl_mvm *mvm; |
777c9b6b JB |
428 | __le32 mac_id; |
429 | __s8 beacon_filter_average_energy; | |
a20fd398 AO |
430 | }; |
431 | ||
432 | static void iwl_mvm_stat_iterator(void *_data, u8 *mac, | |
433 | struct ieee80211_vif *vif) | |
434 | { | |
435 | struct iwl_mvm_stat_data *data = _data; | |
a20fd398 | 436 | struct iwl_mvm *mvm = data->mvm; |
777c9b6b | 437 | int sig = -data->beacon_filter_average_energy; |
a20fd398 AO |
438 | int last_event; |
439 | int thold = vif->bss_conf.cqm_rssi_thold; | |
440 | int hyst = vif->bss_conf.cqm_rssi_hyst; | |
777c9b6b | 441 | u16 id = le32_to_cpu(data->mac_id); |
a20fd398 AO |
442 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
443 | ||
444 | if (mvmvif->id != id) | |
445 | return; | |
446 | ||
447 | if (vif->type != NL80211_IFTYPE_STATION) | |
448 | return; | |
449 | ||
450 | mvmvif->bf_data.ave_beacon_signal = sig; | |
451 | ||
911222b5 AO |
452 | /* BT Coex */ |
453 | if (mvmvif->bf_data.bt_coex_min_thold != | |
454 | mvmvif->bf_data.bt_coex_max_thold) { | |
455 | last_event = mvmvif->bf_data.last_bt_coex_event; | |
456 | if (sig > mvmvif->bf_data.bt_coex_max_thold && | |
457 | (last_event <= mvmvif->bf_data.bt_coex_min_thold || | |
458 | last_event == 0)) { | |
459 | mvmvif->bf_data.last_bt_coex_event = sig; | |
460 | IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n", | |
461 | sig); | |
462 | iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH); | |
463 | } else if (sig < mvmvif->bf_data.bt_coex_min_thold && | |
464 | (last_event >= mvmvif->bf_data.bt_coex_max_thold || | |
465 | last_event == 0)) { | |
466 | mvmvif->bf_data.last_bt_coex_event = sig; | |
467 | IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n", | |
468 | sig); | |
469 | iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW); | |
470 | } | |
471 | } | |
472 | ||
a20fd398 AO |
473 | if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) |
474 | return; | |
475 | ||
476 | /* CQM Notification */ | |
477 | last_event = mvmvif->bf_data.last_cqm_event; | |
478 | if (thold && sig < thold && (last_event == 0 || | |
479 | sig < last_event - hyst)) { | |
480 | mvmvif->bf_data.last_cqm_event = sig; | |
481 | IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", | |
482 | sig); | |
483 | ieee80211_cqm_rssi_notify( | |
484 | vif, | |
485 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
486 | GFP_KERNEL); | |
487 | } else if (sig > thold && | |
488 | (last_event == 0 || sig > last_event + hyst)) { | |
489 | mvmvif->bf_data.last_cqm_event = sig; | |
490 | IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", | |
491 | sig); | |
492 | ieee80211_cqm_rssi_notify( | |
493 | vif, | |
494 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
495 | GFP_KERNEL); | |
496 | } | |
497 | } | |
498 | ||
9ee718aa EL |
499 | /* |
500 | * iwl_mvm_rx_statistics - STATISTICS_NOTIFICATION handler | |
501 | * | |
502 | * TODO: This handler is implemented partially. | |
9ee718aa EL |
503 | */ |
504 | int iwl_mvm_rx_statistics(struct iwl_mvm *mvm, | |
505 | struct iwl_rx_cmd_buffer *rxb, | |
506 | struct iwl_device_cmd *cmd) | |
507 | { | |
508 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
777c9b6b JB |
509 | size_t v8_len = sizeof(struct iwl_notif_statistics_v8); |
510 | size_t v10_len = sizeof(struct iwl_notif_statistics_v10); | |
a20fd398 | 511 | struct iwl_mvm_stat_data data = { |
a20fd398 AO |
512 | .mvm = mvm, |
513 | }; | |
777c9b6b JB |
514 | u32 temperature; |
515 | ||
516 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_STATS_V10) { | |
517 | struct iwl_notif_statistics_v10 *stats = (void *)&pkt->data; | |
518 | ||
519 | if (iwl_rx_packet_payload_len(pkt) != v10_len) | |
520 | goto invalid; | |
521 | ||
522 | temperature = le32_to_cpu(stats->general.radio_temperature); | |
523 | data.mac_id = stats->rx.general.mac_id; | |
524 | data.beacon_filter_average_energy = | |
525 | stats->general.beacon_filter_average_energy; | |
526 | ||
527 | iwl_mvm_update_rx_statistics(mvm, &stats->rx); | |
528 | } else { | |
529 | struct iwl_notif_statistics_v8 *stats = (void *)&pkt->data; | |
530 | ||
531 | if (iwl_rx_packet_payload_len(pkt) != v8_len) | |
532 | goto invalid; | |
533 | ||
534 | temperature = le32_to_cpu(stats->general.radio_temperature); | |
535 | data.mac_id = stats->rx.general.mac_id; | |
536 | data.beacon_filter_average_energy = | |
537 | stats->general.beacon_filter_average_energy; | |
538 | ||
539 | iwl_mvm_update_rx_statistics(mvm, &stats->rx); | |
540 | } | |
9ee718aa | 541 | |
57d7b6a4 LC |
542 | /* Only handle rx statistics temperature changes if async temp |
543 | * notifications are not supported | |
544 | */ | |
545 | if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_ASYNC_DTM)) | |
777c9b6b | 546 | iwl_mvm_tt_temp_changed(mvm, temperature); |
9ee718aa | 547 | |
a20fd398 AO |
548 | ieee80211_iterate_active_interfaces(mvm->hw, |
549 | IEEE80211_IFACE_ITER_NORMAL, | |
550 | iwl_mvm_stat_iterator, | |
551 | &data); | |
9ee718aa | 552 | return 0; |
777c9b6b JB |
553 | invalid: |
554 | IWL_ERR(mvm, "received invalid statistics size (%d)!\n", | |
555 | iwl_rx_packet_payload_len(pkt)); | |
556 | return 0; | |
9ee718aa | 557 | } |