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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 |
cfbeb598 | 10 | * Copyright(c) 2016 - 2017 Intel Deutschland GmbH |
290d5e49 | 11 | * Copyright(c) 2018 - 2020 Intel Corporation |
8ca151b5 JB |
12 | * |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of version 2 of the GNU General Public License as | |
15 | * published by the Free Software Foundation. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, but | |
18 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | * General Public License for more details. | |
21 | * | |
8ca151b5 | 22 | * The full GNU General Public License is included in this distribution |
410dc5aa | 23 | * in the file called COPYING. |
8ca151b5 JB |
24 | * |
25 | * Contact Information: | |
cb2f8277 | 26 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
27 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
28 | * | |
29 | * BSD LICENSE | |
30 | * | |
51368bf7 | 31 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
777c9b6b | 32 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
58d3bef4 | 33 | * Copyright(c) 2016 - 2017 Intel Deutschland GmbH |
290d5e49 | 34 | * Copyright(c) 2018 - 2020 Intel Corporation |
8ca151b5 JB |
35 | * All rights reserved. |
36 | * | |
37 | * Redistribution and use in source and binary forms, with or without | |
38 | * modification, are permitted provided that the following conditions | |
39 | * are met: | |
40 | * | |
41 | * * Redistributions of source code must retain the above copyright | |
42 | * notice, this list of conditions and the following disclaimer. | |
43 | * * Redistributions in binary form must reproduce the above copyright | |
44 | * notice, this list of conditions and the following disclaimer in | |
45 | * the documentation and/or other materials provided with the | |
46 | * distribution. | |
47 | * * Neither the name Intel Corporation nor the names of its | |
48 | * contributors may be used to endorse or promote products derived | |
49 | * from this software without specific prior written permission. | |
50 | * | |
51 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
52 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
53 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
54 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
55 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
56 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
57 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
58 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
59 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
60 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
61 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
62 | *****************************************************************************/ | |
c5aaa8be | 63 | #include <asm/unaligned.h> |
a399f980 | 64 | #include <linux/etherdevice.h> |
93190fb0 | 65 | #include <linux/skbuff.h> |
8ca151b5 | 66 | #include "iwl-trans.h" |
8ca151b5 JB |
67 | #include "mvm.h" |
68 | #include "fw-api.h" | |
69 | ||
70 | /* | |
71 | * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler | |
72 | * | |
73 | * Copies the phy information in mvm->last_phy_info, it will be used when the | |
74 | * actual data will come from the fw in the next packet. | |
75 | */ | |
0416841d | 76 | void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 JB |
77 | { |
78 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
79 | ||
80 | memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info)); | |
81 | mvm->ampdu_ref++; | |
5fc0f76c ES |
82 | |
83 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
84 | if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { | |
85 | spin_lock(&mvm->drv_stats_lock); | |
86 | mvm->drv_rx_stats.ampdu_count++; | |
87 | spin_unlock(&mvm->drv_stats_lock); | |
88 | } | |
89 | #endif | |
8ca151b5 JB |
90 | } |
91 | ||
92 | /* | |
93 | * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211 | |
94 | * | |
95 | * Adds the rxb to a new skb and give it to mac80211 | |
96 | */ | |
97 | static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, | |
43ec72b7 | 98 | struct ieee80211_sta *sta, |
1be5d8cc | 99 | struct napi_struct *napi, |
d0963b5d | 100 | struct sk_buff *skb, |
8ca151b5 | 101 | struct ieee80211_hdr *hdr, u16 len, |
bdbc58ab | 102 | u8 crypt_len, |
d0963b5d | 103 | struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 | 104 | { |
5cddd05c JB |
105 | unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); |
106 | unsigned int fraglen; | |
107 | ||
108 | /* | |
109 | * The 'hdrlen' (plus the 8 bytes for the SNAP and the crypt_len, | |
110 | * but those are all multiples of 4 long) all goes away, but we | |
111 | * want the *end* of it, which is going to be the start of the IP | |
112 | * header, to be aligned when it gets pulled in. | |
113 | * The beginning of the skb->data is aligned on at least a 4-byte | |
114 | * boundary after allocation. Everything here is aligned at least | |
115 | * on a 2-byte boundary so we can just take hdrlen & 3 and pad by | |
116 | * the result. | |
117 | */ | |
118 | skb_reserve(skb, hdrlen & 3); | |
8ca151b5 | 119 | |
8ca151b5 | 120 | /* If frame is small enough to fit in skb->head, pull it completely. |
3771a890 JB |
121 | * If not, only pull ieee80211_hdr (including crypto if present, and |
122 | * an additional 8 bytes for SNAP/ethertype, see below) so that | |
123 | * splice() or TCP coalesce are more efficient. | |
124 | * | |
125 | * Since, in addition, ieee80211_data_to_8023() always pull in at | |
126 | * least 8 bytes (possibly more for mesh) we can do the same here | |
127 | * to save the cost of doing it later. That still doesn't pull in | |
128 | * the actual IP header since the typical case has a SNAP header. | |
129 | * If the latter changes (there are efforts in the standards group | |
130 | * to do so) we should revisit this and ieee80211_data_to_8023(). | |
8ca151b5 | 131 | */ |
5cddd05c | 132 | hdrlen = (len <= skb_tailroom(skb)) ? len : hdrlen + crypt_len + 8; |
8ca151b5 | 133 | |
59ae1d12 | 134 | skb_put_data(skb, hdr, hdrlen); |
8ca151b5 JB |
135 | fraglen = len - hdrlen; |
136 | ||
137 | if (fraglen) { | |
138 | int offset = (void *)hdr + hdrlen - | |
139 | rxb_addr(rxb) + rxb_offset(rxb); | |
140 | ||
141 | skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, | |
142 | fraglen, rxb->truesize); | |
143 | } | |
144 | ||
43ec72b7 | 145 | ieee80211_rx_napi(mvm->hw, sta, skb, napi); |
8ca151b5 JB |
146 | } |
147 | ||
a2d7b870 AA |
148 | /* |
149 | * iwl_mvm_get_signal_strength - use new rx PHY INFO API | |
17dbe564 AA |
150 | * values are reported by the fw as positive values - need to negate |
151 | * to obtain their dBM. Account for missing antennas by replacing 0 | |
152 | * values by -256dBm: practically 0 power and a non-feasible 8 bit value. | |
a2d7b870 | 153 | */ |
226eb8cd JB |
154 | static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, |
155 | struct iwl_rx_phy_info *phy_info, | |
156 | struct ieee80211_rx_status *rx_status) | |
a2d7b870 AA |
157 | { |
158 | int energy_a, energy_b, energy_c, max_energy; | |
159 | u32 val; | |
160 | ||
161 | val = | |
162 | le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]); | |
17dbe564 AA |
163 | energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >> |
164 | IWL_RX_INFO_ENERGY_ANT_A_POS; | |
2cddddc5 | 165 | energy_a = energy_a ? -energy_a : S8_MIN; |
17dbe564 AA |
166 | energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >> |
167 | IWL_RX_INFO_ENERGY_ANT_B_POS; | |
2cddddc5 | 168 | energy_b = energy_b ? -energy_b : S8_MIN; |
17dbe564 AA |
169 | energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >> |
170 | IWL_RX_INFO_ENERGY_ANT_C_POS; | |
2cddddc5 | 171 | energy_c = energy_c ? -energy_c : S8_MIN; |
a2d7b870 AA |
172 | max_energy = max(energy_a, energy_b); |
173 | max_energy = max(max_energy, energy_c); | |
174 | ||
175 | IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n", | |
176 | energy_a, energy_b, energy_c, max_energy); | |
177 | ||
226eb8cd JB |
178 | rx_status->signal = max_energy; |
179 | rx_status->chains = (le16_to_cpu(phy_info->phy_flags) & | |
180 | RX_RES_PHY_FLAGS_ANTENNA) | |
181 | >> RX_RES_PHY_FLAGS_ANTENNA_POS; | |
182 | rx_status->chain_signal[0] = energy_a; | |
183 | rx_status->chain_signal[1] = energy_b; | |
184 | rx_status->chain_signal[2] = energy_c; | |
a2d7b870 AA |
185 | } |
186 | ||
8ca151b5 JB |
187 | /* |
188 | * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format | |
189 | * @mvm: the mvm object | |
190 | * @hdr: 80211 header | |
191 | * @stats: status in mac80211's format | |
192 | * @rx_pkt_status: status coming from fw | |
193 | * | |
194 | * returns non 0 value if the packet should be dropped | |
195 | */ | |
196 | static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm, | |
197 | struct ieee80211_hdr *hdr, | |
198 | struct ieee80211_rx_status *stats, | |
eb96ccb1 JB |
199 | u32 rx_pkt_status, |
200 | u8 *crypt_len) | |
8ca151b5 JB |
201 | { |
202 | if (!ieee80211_has_protected(hdr->frame_control) || | |
203 | (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == | |
204 | RX_MPDU_RES_STATUS_SEC_NO_ENC) | |
205 | return 0; | |
206 | ||
207 | /* packet was encrypted with unknown alg */ | |
208 | if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == | |
209 | RX_MPDU_RES_STATUS_SEC_ENC_ERR) | |
210 | return 0; | |
211 | ||
212 | switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) { | |
213 | case RX_MPDU_RES_STATUS_SEC_CCM_ENC: | |
214 | /* alg is CCM: check MIC only */ | |
215 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) | |
216 | return -1; | |
217 | ||
218 | stats->flag |= RX_FLAG_DECRYPTED; | |
eb96ccb1 | 219 | *crypt_len = IEEE80211_CCMP_HDR_LEN; |
8ca151b5 JB |
220 | return 0; |
221 | ||
222 | case RX_MPDU_RES_STATUS_SEC_TKIP_ENC: | |
223 | /* Don't drop the frame and decrypt it in SW */ | |
57df3839 SS |
224 | if (!fw_has_api(&mvm->fw->ucode_capa, |
225 | IWL_UCODE_TLV_API_DEPRECATE_TTAK) && | |
226 | !(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK)) | |
8ca151b5 | 227 | return 0; |
eb96ccb1 | 228 | *crypt_len = IEEE80211_TKIP_IV_LEN; |
244726ec | 229 | /* fall through */ |
8ca151b5 JB |
230 | |
231 | case RX_MPDU_RES_STATUS_SEC_WEP_ENC: | |
232 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK)) | |
233 | return -1; | |
234 | ||
235 | stats->flag |= RX_FLAG_DECRYPTED; | |
eb96ccb1 JB |
236 | if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == |
237 | RX_MPDU_RES_STATUS_SEC_WEP_ENC) | |
238 | *crypt_len = IEEE80211_WEP_IV_LEN; | |
8ca151b5 JB |
239 | return 0; |
240 | ||
e36e5433 MS |
241 | case RX_MPDU_RES_STATUS_SEC_EXT_ENC: |
242 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) | |
243 | return -1; | |
244 | stats->flag |= RX_FLAG_DECRYPTED; | |
245 | return 0; | |
246 | ||
8ca151b5 | 247 | default: |
baf41bc3 ST |
248 | /* Expected in monitor (not having the keys) */ |
249 | if (!mvm->monitor_on) | |
250 | IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status); | |
8ca151b5 JB |
251 | } |
252 | ||
253 | return 0; | |
254 | } | |
255 | ||
7d9d0d56 LC |
256 | static void iwl_mvm_rx_handle_tcm(struct iwl_mvm *mvm, |
257 | struct ieee80211_sta *sta, | |
258 | struct ieee80211_hdr *hdr, u32 len, | |
259 | struct iwl_rx_phy_info *phy_info, | |
260 | u32 rate_n_flags) | |
261 | { | |
262 | struct iwl_mvm_sta *mvmsta; | |
263 | struct iwl_mvm_tcm_mac *mdata; | |
264 | int mac; | |
265 | int ac = IEEE80211_AC_BE; /* treat non-QoS as BE */ | |
b0ffe455 JB |
266 | struct iwl_mvm_vif *mvmvif; |
267 | /* expected throughput in 100Kbps, single stream, 20 MHz */ | |
268 | static const u8 thresh_tpt[] = { | |
269 | 9, 18, 30, 42, 60, 78, 90, 96, 120, 135, | |
270 | }; | |
271 | u16 thr; | |
7d9d0d56 LC |
272 | |
273 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
274 | ac = tid_to_mac80211_ac[ieee80211_get_tid(hdr)]; | |
275 | ||
276 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
277 | mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK; | |
278 | ||
279 | if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD)) | |
280 | schedule_delayed_work(&mvm->tcm.work, 0); | |
281 | mdata = &mvm->tcm.data[mac]; | |
282 | mdata->rx.pkts[ac]++; | |
283 | ||
284 | /* count the airtime only once for each ampdu */ | |
285 | if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) { | |
286 | mdata->rx.last_ampdu_ref = mvm->ampdu_ref; | |
287 | mdata->rx.airtime += le16_to_cpu(phy_info->frame_time); | |
288 | } | |
289 | ||
290 | if (!(rate_n_flags & (RATE_MCS_HT_MSK | RATE_MCS_VHT_MSK))) | |
291 | return; | |
292 | ||
b0ffe455 JB |
293 | mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); |
294 | ||
295 | if (mdata->opened_rx_ba_sessions || | |
296 | mdata->uapsd_nonagg_detect.detected || | |
297 | (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd && | |
298 | !mvmvif->queue_params[IEEE80211_AC_VI].uapsd && | |
299 | !mvmvif->queue_params[IEEE80211_AC_BE].uapsd && | |
300 | !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) || | |
301 | mvmsta->sta_id != mvmvif->ap_sta_id) | |
302 | return; | |
303 | ||
304 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
305 | thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK]; | |
306 | thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK) >> | |
307 | RATE_HT_MCS_NSS_POS); | |
308 | } else { | |
309 | if (WARN_ON((rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK) >= | |
310 | ARRAY_SIZE(thresh_tpt))) | |
311 | return; | |
312 | thr = thresh_tpt[rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK]; | |
313 | thr *= 1 + ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> | |
314 | RATE_VHT_MCS_NSS_POS); | |
315 | } | |
316 | ||
317 | thr <<= ((rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) >> | |
318 | RATE_MCS_CHAN_WIDTH_POS); | |
319 | ||
320 | mdata->uapsd_nonagg_detect.rx_bytes += len; | |
321 | ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, thr); | |
7d9d0d56 LC |
322 | } |
323 | ||
93190fb0 AA |
324 | static void iwl_mvm_rx_csum(struct ieee80211_sta *sta, |
325 | struct sk_buff *skb, | |
326 | u32 status) | |
327 | { | |
328 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
329 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); | |
330 | ||
331 | if (mvmvif->features & NETIF_F_RXCSUM && | |
332 | status & RX_MPDU_RES_STATUS_CSUM_DONE && | |
333 | status & RX_MPDU_RES_STATUS_CSUM_OK) | |
334 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
335 | } | |
336 | ||
8ca151b5 JB |
337 | /* |
338 | * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler | |
339 | * | |
340 | * Handles the actual data of the Rx packet from the fw | |
341 | */ | |
1be5d8cc JB |
342 | void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi, |
343 | struct iwl_rx_cmd_buffer *rxb) | |
8ca151b5 JB |
344 | { |
345 | struct ieee80211_hdr *hdr; | |
d0963b5d | 346 | struct ieee80211_rx_status *rx_status; |
8ca151b5 JB |
347 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
348 | struct iwl_rx_phy_info *phy_info; | |
349 | struct iwl_rx_mpdu_res_start *rx_res; | |
a399f980 | 350 | struct ieee80211_sta *sta = NULL; |
d0963b5d | 351 | struct sk_buff *skb; |
8ca151b5 | 352 | u32 len; |
8ca151b5 JB |
353 | u32 rate_n_flags; |
354 | u32 rx_pkt_status; | |
eb96ccb1 | 355 | u8 crypt_len = 0; |
8ca151b5 JB |
356 | |
357 | phy_info = &mvm->last_phy_info; | |
358 | rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data; | |
359 | hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res)); | |
360 | len = le16_to_cpu(rx_res->byte_count); | |
c5aaa8be | 361 | rx_pkt_status = get_unaligned_le32((__le32 *) |
8ca151b5 JB |
362 | (pkt->data + sizeof(*rx_res) + len)); |
363 | ||
d0963b5d JB |
364 | /* Dont use dev_alloc_skb(), we'll have enough headroom once |
365 | * ieee80211_hdr pulled. | |
366 | */ | |
367 | skb = alloc_skb(128, GFP_ATOMIC); | |
368 | if (!skb) { | |
369 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
0416841d | 370 | return; |
d0963b5d JB |
371 | } |
372 | ||
373 | rx_status = IEEE80211_SKB_RXCB(skb); | |
8ca151b5 JB |
374 | |
375 | /* | |
376 | * drop the packet if it has failed being decrypted by HW | |
377 | */ | |
eb96ccb1 JB |
378 | if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status, |
379 | &crypt_len)) { | |
8ca151b5 JB |
380 | IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n", |
381 | rx_pkt_status); | |
d0963b5d | 382 | kfree_skb(skb); |
0416841d | 383 | return; |
8ca151b5 JB |
384 | } |
385 | ||
fb8b8ee1 JB |
386 | /* |
387 | * Keep packets with CRC errors (and with overrun) for monitor mode | |
388 | * (otherwise the firmware discards them) but mark them as bad. | |
389 | */ | |
8ca151b5 JB |
390 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) || |
391 | !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) { | |
392 | IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status); | |
d0963b5d | 393 | rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; |
8ca151b5 JB |
394 | } |
395 | ||
396 | /* This will be used in several places later */ | |
397 | rate_n_flags = le32_to_cpu(phy_info->rate_n_flags); | |
398 | ||
399 | /* rx_status carries information about the packet to mac80211 */ | |
d0963b5d JB |
400 | rx_status->mactime = le64_to_cpu(phy_info->timestamp); |
401 | rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp); | |
402 | rx_status->band = | |
8ca151b5 | 403 | (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? |
57fbcce3 | 404 | NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; |
d0963b5d | 405 | rx_status->freq = |
8ca151b5 | 406 | ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel), |
d0963b5d | 407 | rx_status->band); |
77fe7395 SS |
408 | |
409 | /* TSF as indicated by the firmware is at INA time */ | |
410 | rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; | |
8ca151b5 | 411 | |
d0963b5d | 412 | iwl_mvm_get_signal_strength(mvm, phy_info, rx_status); |
8ca151b5 | 413 | |
d0963b5d JB |
414 | IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal, |
415 | (unsigned long long)rx_status->mactime); | |
8ca151b5 | 416 | |
361dbec8 | 417 | rcu_read_lock(); |
a399f980 JB |
418 | if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) { |
419 | u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK; | |
420 | ||
421 | id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT; | |
422 | ||
0ae98812 | 423 | if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) { |
a399f980 JB |
424 | sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); |
425 | if (IS_ERR(sta)) | |
426 | sta = NULL; | |
427 | } | |
428 | } else if (!is_multicast_ether_addr(hdr->addr2)) { | |
429 | /* This is fine since we prevent two stations with the same | |
430 | * address from being added. | |
431 | */ | |
432 | sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); | |
361dbec8 ES |
433 | } |
434 | ||
361dbec8 | 435 | if (sta) { |
7c0ebd78 | 436 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
d3a108a4 AO |
437 | struct ieee80211_vif *tx_blocked_vif = |
438 | rcu_dereference(mvm->csa_tx_blocked_vif); | |
6c042d75 SS |
439 | struct iwl_fw_dbg_trigger_tlv *trig; |
440 | struct ieee80211_vif *vif = mvmsta->vif; | |
7c0ebd78 | 441 | |
a399f980 JB |
442 | /* We have tx blocked stations (with CS bit). If we heard |
443 | * frames from a blocked station on a new channel we can | |
444 | * TX to it again. | |
445 | */ | |
6c042d75 | 446 | if (unlikely(tx_blocked_vif) && vif == tx_blocked_vif) { |
d3a108a4 AO |
447 | struct iwl_mvm_vif *mvmvif = |
448 | iwl_mvm_vif_from_mac80211(tx_blocked_vif); | |
449 | ||
450 | if (mvmvif->csa_target_freq == rx_status->freq) | |
451 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, | |
452 | false); | |
453 | } | |
a399f980 | 454 | |
ecaf71de | 455 | rs_update_last_rssi(mvm, mvmsta, rx_status); |
3ec50b5e | 456 | |
6c042d75 SS |
457 | trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, |
458 | ieee80211_vif_to_wdev(vif), | |
459 | FW_DBG_TRIGGER_RSSI); | |
460 | ||
461 | if (trig && ieee80211_is_beacon(hdr->frame_control)) { | |
3ec50b5e | 462 | struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; |
3ec50b5e EG |
463 | s32 rssi; |
464 | ||
3ec50b5e EG |
465 | rssi_trig = (void *)trig->data; |
466 | rssi = le32_to_cpu(rssi_trig->rssi); | |
467 | ||
6c042d75 | 468 | if (rx_status->signal < rssi) |
7174beb6 JB |
469 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, |
470 | NULL); | |
3ec50b5e | 471 | } |
93190fb0 | 472 | |
7d9d0d56 LC |
473 | if (!mvm->tcm.paused && len >= sizeof(*hdr) && |
474 | !is_multicast_ether_addr(hdr->addr1) && | |
475 | ieee80211_is_data(hdr->frame_control)) | |
476 | iwl_mvm_rx_handle_tcm(mvm, sta, hdr, len, phy_info, | |
477 | rate_n_flags); | |
478 | ||
a399f980 JB |
479 | if (ieee80211_is_data(hdr->frame_control)) |
480 | iwl_mvm_rx_csum(sta, skb, rx_pkt_status); | |
481 | } | |
361dbec8 ES |
482 | rcu_read_unlock(); |
483 | ||
8ca151b5 JB |
484 | /* set the preamble flag if appropriate */ |
485 | if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE)) | |
7fdd69c5 | 486 | rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE; |
8ca151b5 JB |
487 | |
488 | if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { | |
489 | /* | |
490 | * We know which subframes of an A-MPDU belong | |
491 | * together since we get a single PHY response | |
492 | * from the firmware for all of them | |
493 | */ | |
d0963b5d JB |
494 | rx_status->flag |= RX_FLAG_AMPDU_DETAILS; |
495 | rx_status->ampdu_reference = mvm->ampdu_ref; | |
8ca151b5 JB |
496 | } |
497 | ||
498 | /* Set up the HT phy flags */ | |
499 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
500 | case RATE_MCS_CHAN_WIDTH_20: | |
501 | break; | |
502 | case RATE_MCS_CHAN_WIDTH_40: | |
da6a4352 | 503 | rx_status->bw = RATE_INFO_BW_40; |
8ca151b5 JB |
504 | break; |
505 | case RATE_MCS_CHAN_WIDTH_80: | |
da6a4352 | 506 | rx_status->bw = RATE_INFO_BW_80; |
8ca151b5 JB |
507 | break; |
508 | case RATE_MCS_CHAN_WIDTH_160: | |
da6a4352 | 509 | rx_status->bw = RATE_INFO_BW_160; |
8ca151b5 JB |
510 | break; |
511 | } | |
4c59ff5a SS |
512 | if (!(rate_n_flags & RATE_MCS_CCK_MSK) && |
513 | rate_n_flags & RATE_MCS_SGI_MSK) | |
7fdd69c5 | 514 | rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; |
8ca151b5 | 515 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) |
7fdd69c5 | 516 | rx_status->enc_flags |= RX_ENC_FLAG_HT_GF; |
7b1dd048 | 517 | if (rate_n_flags & RATE_MCS_LDPC_MSK) |
7fdd69c5 | 518 | rx_status->enc_flags |= RX_ENC_FLAG_LDPC; |
8ca151b5 | 519 | if (rate_n_flags & RATE_MCS_HT_MSK) { |
77e40945 | 520 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> |
7b1dd048 | 521 | RATE_MCS_STBC_POS; |
da6a4352 | 522 | rx_status->encoding = RX_ENC_HT; |
d0963b5d | 523 | rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; |
7fdd69c5 | 524 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; |
8ca151b5 | 525 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { |
77e40945 | 526 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> |
7b1dd048 | 527 | RATE_MCS_STBC_POS; |
8613c948 | 528 | rx_status->nss = |
8ca151b5 JB |
529 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> |
530 | RATE_VHT_MCS_NSS_POS) + 1; | |
d0963b5d | 531 | rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; |
da6a4352 | 532 | rx_status->encoding = RX_ENC_VHT; |
7fdd69c5 | 533 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; |
95e05ab7 | 534 | if (rate_n_flags & RATE_MCS_BF_MSK) |
7fdd69c5 | 535 | rx_status->enc_flags |= RX_ENC_FLAG_BF; |
8ca151b5 | 536 | } else { |
cb2de6bb SS |
537 | int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, |
538 | rx_status->band); | |
539 | ||
540 | if (WARN(rate < 0 || rate > 0xFF, | |
541 | "Invalid rate flags 0x%x, band %d,\n", | |
542 | rate_n_flags, rx_status->band)) { | |
543 | kfree_skb(skb); | |
544 | return; | |
545 | } | |
546 | rx_status->rate_idx = rate; | |
8ca151b5 JB |
547 | } |
548 | ||
5fc0f76c | 549 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
2f15a829 | 550 | iwl_mvm_update_frame_stats(mvm, rate_n_flags, |
d0963b5d | 551 | rx_status->flag & RX_FLAG_AMPDU_DETAILS); |
5fc0f76c | 552 | #endif |
a339e918 LC |
553 | |
554 | if (unlikely((ieee80211_is_beacon(hdr->frame_control) || | |
555 | ieee80211_is_probe_resp(hdr->frame_control)) && | |
556 | mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)) | |
557 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND; | |
558 | ||
43ec72b7 JB |
559 | if (unlikely(ieee80211_is_beacon(hdr->frame_control) || |
560 | ieee80211_is_probe_resp(hdr->frame_control))) | |
9285ec4c | 561 | rx_status->boottime_ns = ktime_get_boottime_ns(); |
43ec72b7 JB |
562 | |
563 | iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len, | |
bdbc58ab | 564 | crypt_len, rxb); |
8ca151b5 | 565 | } |
9ee718aa | 566 | |
a20fd398 | 567 | struct iwl_mvm_stat_data { |
a20fd398 | 568 | struct iwl_mvm *mvm; |
290d5e49 | 569 | __le32 flags; |
777c9b6b | 570 | __le32 mac_id; |
62e004fe | 571 | u8 beacon_filter_average_energy; |
0e7ac018 | 572 | void *general; |
a20fd398 AO |
573 | }; |
574 | ||
575 | static void iwl_mvm_stat_iterator(void *_data, u8 *mac, | |
576 | struct ieee80211_vif *vif) | |
577 | { | |
578 | struct iwl_mvm_stat_data *data = _data; | |
a20fd398 | 579 | struct iwl_mvm *mvm = data->mvm; |
777c9b6b | 580 | int sig = -data->beacon_filter_average_energy; |
a20fd398 AO |
581 | int last_event; |
582 | int thold = vif->bss_conf.cqm_rssi_thold; | |
583 | int hyst = vif->bss_conf.cqm_rssi_hyst; | |
777c9b6b | 584 | u16 id = le32_to_cpu(data->mac_id); |
a20fd398 | 585 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
55ed14cd | 586 | u16 vif_id = mvmvif->id; |
a20fd398 | 587 | |
33cef925 JB |
588 | /* This doesn't need the MAC ID check since it's not taking the |
589 | * data copied into the "data" struct, but rather the data from | |
590 | * the notification directly. | |
591 | */ | |
606b9ab6 EG |
592 | if (iwl_mvm_has_new_rx_stats_api(mvm)) { |
593 | struct mvm_statistics_general *general = | |
55ed14cd EG |
594 | data->general; |
595 | ||
596 | mvmvif->beacon_stats.num_beacons = | |
597 | le32_to_cpu(general->beacon_counter[vif_id]); | |
598 | mvmvif->beacon_stats.avg_signal = | |
599 | -general->beacon_average_energy[vif_id]; | |
600 | } else { | |
601 | struct mvm_statistics_general_v8 *general = | |
602 | data->general; | |
603 | ||
604 | mvmvif->beacon_stats.num_beacons = | |
605 | le32_to_cpu(general->beacon_counter[vif_id]); | |
606 | mvmvif->beacon_stats.avg_signal = | |
607 | -general->beacon_average_energy[vif_id]; | |
33cef925 JB |
608 | } |
609 | ||
290d5e49 MG |
610 | /* make sure that beacon statistics don't go backwards with TCM |
611 | * request to clear statistics | |
612 | */ | |
613 | if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR) | |
614 | mvmvif->beacon_stats.accu_num_beacons += | |
615 | mvmvif->beacon_stats.num_beacons; | |
616 | ||
a20fd398 AO |
617 | if (mvmvif->id != id) |
618 | return; | |
619 | ||
620 | if (vif->type != NL80211_IFTYPE_STATION) | |
621 | return; | |
622 | ||
8047cc0c AB |
623 | if (sig == 0) { |
624 | IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n"); | |
625 | return; | |
626 | } | |
627 | ||
a20fd398 AO |
628 | mvmvif->bf_data.ave_beacon_signal = sig; |
629 | ||
911222b5 AO |
630 | /* BT Coex */ |
631 | if (mvmvif->bf_data.bt_coex_min_thold != | |
632 | mvmvif->bf_data.bt_coex_max_thold) { | |
633 | last_event = mvmvif->bf_data.last_bt_coex_event; | |
634 | if (sig > mvmvif->bf_data.bt_coex_max_thold && | |
635 | (last_event <= mvmvif->bf_data.bt_coex_min_thold || | |
636 | last_event == 0)) { | |
637 | mvmvif->bf_data.last_bt_coex_event = sig; | |
638 | IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n", | |
639 | sig); | |
640 | iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH); | |
641 | } else if (sig < mvmvif->bf_data.bt_coex_min_thold && | |
642 | (last_event >= mvmvif->bf_data.bt_coex_max_thold || | |
643 | last_event == 0)) { | |
644 | mvmvif->bf_data.last_bt_coex_event = sig; | |
645 | IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n", | |
646 | sig); | |
647 | iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW); | |
648 | } | |
649 | } | |
650 | ||
a20fd398 AO |
651 | if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) |
652 | return; | |
653 | ||
654 | /* CQM Notification */ | |
655 | last_event = mvmvif->bf_data.last_cqm_event; | |
656 | if (thold && sig < thold && (last_event == 0 || | |
657 | sig < last_event - hyst)) { | |
658 | mvmvif->bf_data.last_cqm_event = sig; | |
659 | IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", | |
660 | sig); | |
661 | ieee80211_cqm_rssi_notify( | |
662 | vif, | |
663 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
769f07d8 | 664 | sig, |
a20fd398 AO |
665 | GFP_KERNEL); |
666 | } else if (sig > thold && | |
667 | (last_event == 0 || sig > last_event + hyst)) { | |
668 | mvmvif->bf_data.last_cqm_event = sig; | |
669 | IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", | |
670 | sig); | |
671 | ieee80211_cqm_rssi_notify( | |
672 | vif, | |
673 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
769f07d8 | 674 | sig, |
a20fd398 AO |
675 | GFP_KERNEL); |
676 | } | |
677 | } | |
678 | ||
5a756c20 EG |
679 | static inline void |
680 | iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) | |
681 | { | |
682 | struct iwl_fw_dbg_trigger_tlv *trig; | |
683 | struct iwl_fw_dbg_trigger_stats *trig_stats; | |
684 | u32 trig_offset, trig_thold; | |
685 | ||
6c042d75 SS |
686 | trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS); |
687 | if (!trig) | |
5a756c20 EG |
688 | return; |
689 | ||
5a756c20 EG |
690 | trig_stats = (void *)trig->data; |
691 | ||
5a756c20 EG |
692 | trig_offset = le32_to_cpu(trig_stats->stop_offset); |
693 | trig_thold = le32_to_cpu(trig_stats->stop_threshold); | |
694 | ||
695 | if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt))) | |
696 | return; | |
697 | ||
698 | if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold) | |
699 | return; | |
700 | ||
7174beb6 | 701 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL); |
5a756c20 EG |
702 | } |
703 | ||
91a8bcde JB |
704 | void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm, |
705 | struct iwl_rx_packet *pkt) | |
9ee718aa | 706 | { |
a20fd398 | 707 | struct iwl_mvm_stat_data data = { |
a20fd398 AO |
708 | .mvm = mvm, |
709 | }; | |
0e7ac018 | 710 | int expected_size; |
cfbeb598 GM |
711 | int i; |
712 | u8 *energy; | |
b0ffe455 | 713 | __le32 *bytes; |
7d9d0d56 | 714 | __le32 *air_time; |
678d9b6d | 715 | __le32 flags; |
0e7ac018 | 716 | |
678d9b6d LK |
717 | if (!iwl_mvm_has_new_rx_stats_api(mvm)) { |
718 | if (iwl_mvm_has_new_rx_api(mvm)) | |
719 | expected_size = sizeof(struct iwl_notif_statistics_v11); | |
720 | else | |
721 | expected_size = sizeof(struct iwl_notif_statistics_v10); | |
722 | } else { | |
606b9ab6 | 723 | expected_size = sizeof(struct iwl_notif_statistics); |
678d9b6d | 724 | } |
777c9b6b | 725 | |
42fa5e0e JB |
726 | if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size, |
727 | "received invalid statistics size (%d)!\n", | |
728 | iwl_rx_packet_payload_len(pkt))) | |
6a90f85a | 729 | return; |
777c9b6b | 730 | |
678d9b6d LK |
731 | if (!iwl_mvm_has_new_rx_stats_api(mvm)) { |
732 | struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data; | |
777c9b6b | 733 | |
678d9b6d LK |
734 | data.mac_id = stats->rx.general.mac_id; |
735 | data.beacon_filter_average_energy = | |
736 | stats->general.common.beacon_filter_average_energy; | |
777c9b6b | 737 | |
678d9b6d | 738 | mvm->rx_stats_v3 = stats->rx; |
91a8bcde | 739 | |
678d9b6d LK |
740 | mvm->radio_stats.rx_time = |
741 | le64_to_cpu(stats->general.common.rx_time); | |
742 | mvm->radio_stats.tx_time = | |
743 | le64_to_cpu(stats->general.common.tx_time); | |
744 | mvm->radio_stats.on_time_rf = | |
745 | le64_to_cpu(stats->general.common.on_time_rf); | |
746 | mvm->radio_stats.on_time_scan = | |
747 | le64_to_cpu(stats->general.common.on_time_scan); | |
748 | ||
749 | data.general = &stats->general; | |
750 | ||
751 | flags = stats->flag; | |
752 | } else { | |
606b9ab6 | 753 | struct iwl_notif_statistics *stats = (void *)&pkt->data; |
678d9b6d LK |
754 | |
755 | data.mac_id = stats->rx.general.mac_id; | |
756 | data.beacon_filter_average_energy = | |
757 | stats->general.common.beacon_filter_average_energy; | |
758 | ||
759 | mvm->rx_stats = stats->rx; | |
760 | ||
761 | mvm->radio_stats.rx_time = | |
762 | le64_to_cpu(stats->general.common.rx_time); | |
763 | mvm->radio_stats.tx_time = | |
764 | le64_to_cpu(stats->general.common.tx_time); | |
765 | mvm->radio_stats.on_time_rf = | |
766 | le64_to_cpu(stats->general.common.on_time_rf); | |
767 | mvm->radio_stats.on_time_scan = | |
768 | le64_to_cpu(stats->general.common.on_time_scan); | |
769 | ||
770 | data.general = &stats->general; | |
771 | ||
772 | flags = stats->flag; | |
773 | } | |
290d5e49 | 774 | data.flags = flags; |
9ee718aa | 775 | |
5a756c20 EG |
776 | iwl_mvm_rx_stats_check_trigger(mvm, pkt); |
777 | ||
a20fd398 AO |
778 | ieee80211_iterate_active_interfaces(mvm->hw, |
779 | IEEE80211_IFACE_ITER_NORMAL, | |
780 | iwl_mvm_stat_iterator, | |
781 | &data); | |
cfbeb598 GM |
782 | |
783 | if (!iwl_mvm_has_new_rx_api(mvm)) | |
784 | return; | |
785 | ||
678d9b6d LK |
786 | if (!iwl_mvm_has_new_rx_stats_api(mvm)) { |
787 | struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data; | |
cfbeb598 GM |
788 | |
789 | energy = (void *)&v11->load_stats.avg_energy; | |
b0ffe455 | 790 | bytes = (void *)&v11->load_stats.byte_count; |
cfbeb598 GM |
791 | air_time = (void *)&v11->load_stats.air_time; |
792 | } else { | |
606b9ab6 | 793 | struct iwl_notif_statistics *stats = (void *)&pkt->data; |
678d9b6d | 794 | |
cfbeb598 | 795 | energy = (void *)&stats->load_stats.avg_energy; |
b0ffe455 | 796 | bytes = (void *)&stats->load_stats.byte_count; |
cfbeb598 GM |
797 | air_time = (void *)&stats->load_stats.air_time; |
798 | } | |
799 | ||
800 | rcu_read_lock(); | |
801 | for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { | |
802 | struct iwl_mvm_sta *sta; | |
803 | ||
804 | if (!energy[i]) | |
805 | continue; | |
806 | ||
807 | sta = iwl_mvm_sta_from_staid_rcu(mvm, i); | |
808 | if (!sta) | |
809 | continue; | |
810 | sta->avg_energy = energy[i]; | |
811 | } | |
812 | rcu_read_unlock(); | |
7d9d0d56 LC |
813 | |
814 | /* | |
815 | * Don't update in case the statistics are not cleared, since | |
816 | * we will end up counting twice the same airtime, once in TCM | |
817 | * request and once in statistics notification. | |
818 | */ | |
819 | if (!(le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)) | |
820 | return; | |
821 | ||
822 | spin_lock(&mvm->tcm.lock); | |
823 | for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) { | |
824 | struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i]; | |
825 | u32 airtime = le32_to_cpu(air_time[i]); | |
b0ffe455 JB |
826 | u32 rx_bytes = le32_to_cpu(bytes[i]); |
827 | ||
828 | mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes; | |
829 | if (airtime) { | |
830 | /* re-init every time to store rate from FW */ | |
831 | ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); | |
832 | ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, | |
833 | rx_bytes * 8 / airtime); | |
834 | } | |
7d9d0d56 LC |
835 | |
836 | mdata->rx.airtime += airtime; | |
837 | } | |
838 | spin_unlock(&mvm->tcm.lock); | |
91a8bcde JB |
839 | } |
840 | ||
0416841d | 841 | void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
91a8bcde JB |
842 | { |
843 | iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb)); | |
9ee718aa | 844 | } |
3af512d6 SS |
845 | |
846 | void iwl_mvm_window_status_notif(struct iwl_mvm *mvm, | |
847 | struct iwl_rx_cmd_buffer *rxb) | |
848 | { | |
849 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
850 | struct iwl_ba_window_status_notif *notif = (void *)pkt->data; | |
851 | int i; | |
852 | u32 pkt_len = iwl_rx_packet_payload_len(pkt); | |
853 | ||
854 | if (WARN_ONCE(pkt_len != sizeof(*notif), | |
855 | "Received window status notification of wrong size (%u)\n", | |
856 | pkt_len)) | |
857 | return; | |
858 | ||
859 | rcu_read_lock(); | |
860 | for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) { | |
861 | struct ieee80211_sta *sta; | |
862 | u8 sta_id, tid; | |
863 | u64 bitmap; | |
864 | u32 ssn; | |
865 | u16 ratid; | |
866 | u16 received_mpdu; | |
867 | ||
868 | ratid = le16_to_cpu(notif->ra_tid[i]); | |
869 | /* check that this TID is valid */ | |
870 | if (!(ratid & BA_WINDOW_STATUS_VALID_MSK)) | |
871 | continue; | |
872 | ||
873 | received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]); | |
874 | if (received_mpdu == 0) | |
875 | continue; | |
876 | ||
877 | tid = ratid & BA_WINDOW_STATUS_TID_MSK; | |
878 | /* get the station */ | |
879 | sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK) | |
880 | >> BA_WINDOW_STATUS_STA_ID_POS; | |
881 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
882 | if (IS_ERR_OR_NULL(sta)) | |
883 | continue; | |
884 | bitmap = le64_to_cpu(notif->bitmap[i]); | |
885 | ssn = le32_to_cpu(notif->start_seq_num[i]); | |
886 | ||
887 | /* update mac80211 with the bitmap for the reordering buffer */ | |
888 | ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap, | |
889 | received_mpdu); | |
890 | } | |
891 | rcu_read_unlock(); | |
892 | } |