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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 |
8ca151b5 JB |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
24 | * USA | |
25 | * | |
26 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 27 | * in the file called COPYING. |
8ca151b5 JB |
28 | * |
29 | * Contact Information: | |
cb2f8277 | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
51368bf7 | 35 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
777c9b6b | 36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
8ca151b5 JB |
37 | * All rights reserved. |
38 | * | |
39 | * Redistribution and use in source and binary forms, with or without | |
40 | * modification, are permitted provided that the following conditions | |
41 | * are met: | |
42 | * | |
43 | * * Redistributions of source code must retain the above copyright | |
44 | * notice, this list of conditions and the following disclaimer. | |
45 | * * Redistributions in binary form must reproduce the above copyright | |
46 | * notice, this list of conditions and the following disclaimer in | |
47 | * the documentation and/or other materials provided with the | |
48 | * distribution. | |
49 | * * Neither the name Intel Corporation nor the names of its | |
50 | * contributors may be used to endorse or promote products derived | |
51 | * from this software without specific prior written permission. | |
52 | * | |
53 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
54 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
55 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
56 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
57 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
58 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
59 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
60 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
61 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
62 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
63 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
64 | *****************************************************************************/ | |
a399f980 | 65 | #include <linux/etherdevice.h> |
93190fb0 | 66 | #include <linux/skbuff.h> |
8ca151b5 | 67 | #include "iwl-trans.h" |
8ca151b5 JB |
68 | #include "mvm.h" |
69 | #include "fw-api.h" | |
70 | ||
71 | /* | |
72 | * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler | |
73 | * | |
74 | * Copies the phy information in mvm->last_phy_info, it will be used when the | |
75 | * actual data will come from the fw in the next packet. | |
76 | */ | |
0416841d | 77 | void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 JB |
78 | { |
79 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
80 | ||
81 | memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info)); | |
82 | mvm->ampdu_ref++; | |
5fc0f76c ES |
83 | |
84 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
85 | if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { | |
86 | spin_lock(&mvm->drv_stats_lock); | |
87 | mvm->drv_rx_stats.ampdu_count++; | |
88 | spin_unlock(&mvm->drv_stats_lock); | |
89 | } | |
90 | #endif | |
8ca151b5 JB |
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, | |
43ec72b7 | 99 | struct ieee80211_sta *sta, |
1be5d8cc | 100 | struct napi_struct *napi, |
d0963b5d | 101 | struct sk_buff *skb, |
8ca151b5 | 102 | struct ieee80211_hdr *hdr, u16 len, |
bdbc58ab | 103 | u8 crypt_len, |
d0963b5d | 104 | struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 | 105 | { |
5cddd05c JB |
106 | unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); |
107 | unsigned int fraglen; | |
108 | ||
109 | /* | |
110 | * The 'hdrlen' (plus the 8 bytes for the SNAP and the crypt_len, | |
111 | * but those are all multiples of 4 long) all goes away, but we | |
112 | * want the *end* of it, which is going to be the start of the IP | |
113 | * header, to be aligned when it gets pulled in. | |
114 | * The beginning of the skb->data is aligned on at least a 4-byte | |
115 | * boundary after allocation. Everything here is aligned at least | |
116 | * on a 2-byte boundary so we can just take hdrlen & 3 and pad by | |
117 | * the result. | |
118 | */ | |
119 | skb_reserve(skb, hdrlen & 3); | |
8ca151b5 | 120 | |
8ca151b5 | 121 | /* If frame is small enough to fit in skb->head, pull it completely. |
3771a890 JB |
122 | * If not, only pull ieee80211_hdr (including crypto if present, and |
123 | * an additional 8 bytes for SNAP/ethertype, see below) so that | |
124 | * splice() or TCP coalesce are more efficient. | |
125 | * | |
126 | * Since, in addition, ieee80211_data_to_8023() always pull in at | |
127 | * least 8 bytes (possibly more for mesh) we can do the same here | |
128 | * to save the cost of doing it later. That still doesn't pull in | |
129 | * the actual IP header since the typical case has a SNAP header. | |
130 | * If the latter changes (there are efforts in the standards group | |
131 | * to do so) we should revisit this and ieee80211_data_to_8023(). | |
8ca151b5 | 132 | */ |
5cddd05c | 133 | hdrlen = (len <= skb_tailroom(skb)) ? len : hdrlen + crypt_len + 8; |
8ca151b5 | 134 | |
59ae1d12 | 135 | skb_put_data(skb, hdr, hdrlen); |
8ca151b5 JB |
136 | fraglen = len - hdrlen; |
137 | ||
138 | if (fraglen) { | |
139 | int offset = (void *)hdr + hdrlen - | |
140 | rxb_addr(rxb) + rxb_offset(rxb); | |
141 | ||
142 | skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, | |
143 | fraglen, rxb->truesize); | |
144 | } | |
145 | ||
43ec72b7 | 146 | ieee80211_rx_napi(mvm->hw, sta, skb, napi); |
8ca151b5 JB |
147 | } |
148 | ||
a2d7b870 AA |
149 | /* |
150 | * iwl_mvm_get_signal_strength - use new rx PHY INFO API | |
17dbe564 AA |
151 | * values are reported by the fw as positive values - need to negate |
152 | * to obtain their dBM. Account for missing antennas by replacing 0 | |
153 | * values by -256dBm: practically 0 power and a non-feasible 8 bit value. | |
a2d7b870 | 154 | */ |
226eb8cd JB |
155 | static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, |
156 | struct iwl_rx_phy_info *phy_info, | |
157 | struct ieee80211_rx_status *rx_status) | |
a2d7b870 AA |
158 | { |
159 | int energy_a, energy_b, energy_c, max_energy; | |
160 | u32 val; | |
161 | ||
162 | val = | |
163 | le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]); | |
17dbe564 AA |
164 | energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >> |
165 | IWL_RX_INFO_ENERGY_ANT_A_POS; | |
2cddddc5 | 166 | energy_a = energy_a ? -energy_a : S8_MIN; |
17dbe564 AA |
167 | energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >> |
168 | IWL_RX_INFO_ENERGY_ANT_B_POS; | |
2cddddc5 | 169 | energy_b = energy_b ? -energy_b : S8_MIN; |
17dbe564 AA |
170 | energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >> |
171 | IWL_RX_INFO_ENERGY_ANT_C_POS; | |
2cddddc5 | 172 | energy_c = energy_c ? -energy_c : S8_MIN; |
a2d7b870 AA |
173 | max_energy = max(energy_a, energy_b); |
174 | max_energy = max(max_energy, energy_c); | |
175 | ||
176 | IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n", | |
177 | energy_a, energy_b, energy_c, max_energy); | |
178 | ||
226eb8cd JB |
179 | rx_status->signal = max_energy; |
180 | rx_status->chains = (le16_to_cpu(phy_info->phy_flags) & | |
181 | RX_RES_PHY_FLAGS_ANTENNA) | |
182 | >> RX_RES_PHY_FLAGS_ANTENNA_POS; | |
183 | rx_status->chain_signal[0] = energy_a; | |
184 | rx_status->chain_signal[1] = energy_b; | |
185 | rx_status->chain_signal[2] = energy_c; | |
a2d7b870 AA |
186 | } |
187 | ||
8ca151b5 JB |
188 | /* |
189 | * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format | |
190 | * @mvm: the mvm object | |
191 | * @hdr: 80211 header | |
192 | * @stats: status in mac80211's format | |
193 | * @rx_pkt_status: status coming from fw | |
194 | * | |
195 | * returns non 0 value if the packet should be dropped | |
196 | */ | |
197 | static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm, | |
198 | struct ieee80211_hdr *hdr, | |
199 | struct ieee80211_rx_status *stats, | |
eb96ccb1 JB |
200 | u32 rx_pkt_status, |
201 | u8 *crypt_len) | |
8ca151b5 JB |
202 | { |
203 | if (!ieee80211_has_protected(hdr->frame_control) || | |
204 | (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == | |
205 | RX_MPDU_RES_STATUS_SEC_NO_ENC) | |
206 | return 0; | |
207 | ||
208 | /* packet was encrypted with unknown alg */ | |
209 | if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == | |
210 | RX_MPDU_RES_STATUS_SEC_ENC_ERR) | |
211 | return 0; | |
212 | ||
213 | switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) { | |
214 | case RX_MPDU_RES_STATUS_SEC_CCM_ENC: | |
215 | /* alg is CCM: check MIC only */ | |
216 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) | |
217 | return -1; | |
218 | ||
219 | stats->flag |= RX_FLAG_DECRYPTED; | |
eb96ccb1 | 220 | *crypt_len = IEEE80211_CCMP_HDR_LEN; |
8ca151b5 JB |
221 | return 0; |
222 | ||
223 | case RX_MPDU_RES_STATUS_SEC_TKIP_ENC: | |
224 | /* Don't drop the frame and decrypt it in SW */ | |
225 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK)) | |
226 | return 0; | |
eb96ccb1 | 227 | *crypt_len = IEEE80211_TKIP_IV_LEN; |
8ca151b5 JB |
228 | /* fall through if TTAK OK */ |
229 | ||
230 | case RX_MPDU_RES_STATUS_SEC_WEP_ENC: | |
231 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK)) | |
232 | return -1; | |
233 | ||
234 | stats->flag |= RX_FLAG_DECRYPTED; | |
eb96ccb1 JB |
235 | if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) == |
236 | RX_MPDU_RES_STATUS_SEC_WEP_ENC) | |
237 | *crypt_len = IEEE80211_WEP_IV_LEN; | |
8ca151b5 JB |
238 | return 0; |
239 | ||
e36e5433 MS |
240 | case RX_MPDU_RES_STATUS_SEC_EXT_ENC: |
241 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK)) | |
242 | return -1; | |
243 | stats->flag |= RX_FLAG_DECRYPTED; | |
244 | return 0; | |
245 | ||
8ca151b5 | 246 | default: |
baf41bc3 ST |
247 | /* Expected in monitor (not having the keys) */ |
248 | if (!mvm->monitor_on) | |
249 | IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status); | |
8ca151b5 JB |
250 | } |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
93190fb0 AA |
255 | static void iwl_mvm_rx_csum(struct ieee80211_sta *sta, |
256 | struct sk_buff *skb, | |
257 | u32 status) | |
258 | { | |
259 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
260 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); | |
261 | ||
262 | if (mvmvif->features & NETIF_F_RXCSUM && | |
263 | status & RX_MPDU_RES_STATUS_CSUM_DONE && | |
264 | status & RX_MPDU_RES_STATUS_CSUM_OK) | |
265 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
266 | } | |
267 | ||
8ca151b5 JB |
268 | /* |
269 | * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler | |
270 | * | |
271 | * Handles the actual data of the Rx packet from the fw | |
272 | */ | |
1be5d8cc JB |
273 | void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi, |
274 | struct iwl_rx_cmd_buffer *rxb) | |
8ca151b5 JB |
275 | { |
276 | struct ieee80211_hdr *hdr; | |
d0963b5d | 277 | struct ieee80211_rx_status *rx_status; |
8ca151b5 JB |
278 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
279 | struct iwl_rx_phy_info *phy_info; | |
280 | struct iwl_rx_mpdu_res_start *rx_res; | |
a399f980 | 281 | struct ieee80211_sta *sta = NULL; |
d0963b5d | 282 | struct sk_buff *skb; |
8ca151b5 | 283 | u32 len; |
8ca151b5 JB |
284 | u32 rate_n_flags; |
285 | u32 rx_pkt_status; | |
eb96ccb1 | 286 | u8 crypt_len = 0; |
16e4dd8f | 287 | bool take_ref; |
8ca151b5 JB |
288 | |
289 | phy_info = &mvm->last_phy_info; | |
290 | rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data; | |
291 | hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res)); | |
292 | len = le16_to_cpu(rx_res->byte_count); | |
293 | rx_pkt_status = le32_to_cpup((__le32 *) | |
294 | (pkt->data + sizeof(*rx_res) + len)); | |
295 | ||
d0963b5d JB |
296 | /* Dont use dev_alloc_skb(), we'll have enough headroom once |
297 | * ieee80211_hdr pulled. | |
298 | */ | |
299 | skb = alloc_skb(128, GFP_ATOMIC); | |
300 | if (!skb) { | |
301 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
0416841d | 302 | return; |
d0963b5d JB |
303 | } |
304 | ||
305 | rx_status = IEEE80211_SKB_RXCB(skb); | |
8ca151b5 JB |
306 | |
307 | /* | |
308 | * drop the packet if it has failed being decrypted by HW | |
309 | */ | |
eb96ccb1 JB |
310 | if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status, |
311 | &crypt_len)) { | |
8ca151b5 JB |
312 | IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n", |
313 | rx_pkt_status); | |
d0963b5d | 314 | kfree_skb(skb); |
0416841d | 315 | return; |
8ca151b5 JB |
316 | } |
317 | ||
fb8b8ee1 JB |
318 | /* |
319 | * Keep packets with CRC errors (and with overrun) for monitor mode | |
320 | * (otherwise the firmware discards them) but mark them as bad. | |
321 | */ | |
8ca151b5 JB |
322 | if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) || |
323 | !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) { | |
324 | IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status); | |
d0963b5d | 325 | rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; |
8ca151b5 JB |
326 | } |
327 | ||
328 | /* This will be used in several places later */ | |
329 | rate_n_flags = le32_to_cpu(phy_info->rate_n_flags); | |
330 | ||
331 | /* rx_status carries information about the packet to mac80211 */ | |
d0963b5d JB |
332 | rx_status->mactime = le64_to_cpu(phy_info->timestamp); |
333 | rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp); | |
334 | rx_status->band = | |
8ca151b5 | 335 | (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? |
57fbcce3 | 336 | NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; |
d0963b5d | 337 | rx_status->freq = |
8ca151b5 | 338 | ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel), |
d0963b5d | 339 | rx_status->band); |
77fe7395 SS |
340 | |
341 | /* TSF as indicated by the firmware is at INA time */ | |
342 | rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; | |
8ca151b5 | 343 | |
d0963b5d | 344 | iwl_mvm_get_signal_strength(mvm, phy_info, rx_status); |
8ca151b5 | 345 | |
d0963b5d JB |
346 | IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal, |
347 | (unsigned long long)rx_status->mactime); | |
8ca151b5 | 348 | |
361dbec8 | 349 | rcu_read_lock(); |
a399f980 JB |
350 | if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) { |
351 | u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK; | |
352 | ||
353 | id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT; | |
354 | ||
0ae98812 | 355 | if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) { |
a399f980 JB |
356 | sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); |
357 | if (IS_ERR(sta)) | |
358 | sta = NULL; | |
359 | } | |
360 | } else if (!is_multicast_ether_addr(hdr->addr2)) { | |
361 | /* This is fine since we prevent two stations with the same | |
362 | * address from being added. | |
363 | */ | |
364 | sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); | |
361dbec8 ES |
365 | } |
366 | ||
361dbec8 | 367 | if (sta) { |
7c0ebd78 | 368 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
d3a108a4 AO |
369 | struct ieee80211_vif *tx_blocked_vif = |
370 | rcu_dereference(mvm->csa_tx_blocked_vif); | |
7c0ebd78 | 371 | |
a399f980 JB |
372 | /* We have tx blocked stations (with CS bit). If we heard |
373 | * frames from a blocked station on a new channel we can | |
374 | * TX to it again. | |
375 | */ | |
d3a108a4 AO |
376 | if (unlikely(tx_blocked_vif) && |
377 | mvmsta->vif == tx_blocked_vif) { | |
378 | struct iwl_mvm_vif *mvmvif = | |
379 | iwl_mvm_vif_from_mac80211(tx_blocked_vif); | |
380 | ||
381 | if (mvmvif->csa_target_freq == rx_status->freq) | |
382 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, | |
383 | false); | |
384 | } | |
a399f980 | 385 | |
ecaf71de | 386 | rs_update_last_rssi(mvm, mvmsta, rx_status); |
3ec50b5e EG |
387 | |
388 | if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) && | |
389 | ieee80211_is_beacon(hdr->frame_control)) { | |
390 | struct iwl_fw_dbg_trigger_tlv *trig; | |
391 | struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; | |
392 | bool trig_check; | |
393 | s32 rssi; | |
394 | ||
395 | trig = iwl_fw_dbg_get_trigger(mvm->fw, | |
396 | FW_DBG_TRIGGER_RSSI); | |
397 | rssi_trig = (void *)trig->data; | |
398 | rssi = le32_to_cpu(rssi_trig->rssi); | |
399 | ||
400 | trig_check = | |
7174beb6 JB |
401 | iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, |
402 | ieee80211_vif_to_wdev(mvmsta->vif), | |
3ec50b5e EG |
403 | trig); |
404 | if (trig_check && rx_status->signal < rssi) | |
7174beb6 JB |
405 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, |
406 | NULL); | |
3ec50b5e | 407 | } |
93190fb0 | 408 | |
a399f980 JB |
409 | if (ieee80211_is_data(hdr->frame_control)) |
410 | iwl_mvm_rx_csum(sta, skb, rx_pkt_status); | |
411 | } | |
361dbec8 ES |
412 | rcu_read_unlock(); |
413 | ||
8ca151b5 JB |
414 | /* set the preamble flag if appropriate */ |
415 | if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE)) | |
7fdd69c5 | 416 | rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE; |
8ca151b5 JB |
417 | |
418 | if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) { | |
419 | /* | |
420 | * We know which subframes of an A-MPDU belong | |
421 | * together since we get a single PHY response | |
422 | * from the firmware for all of them | |
423 | */ | |
d0963b5d JB |
424 | rx_status->flag |= RX_FLAG_AMPDU_DETAILS; |
425 | rx_status->ampdu_reference = mvm->ampdu_ref; | |
8ca151b5 JB |
426 | } |
427 | ||
428 | /* Set up the HT phy flags */ | |
429 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
430 | case RATE_MCS_CHAN_WIDTH_20: | |
431 | break; | |
432 | case RATE_MCS_CHAN_WIDTH_40: | |
da6a4352 | 433 | rx_status->bw = RATE_INFO_BW_40; |
8ca151b5 JB |
434 | break; |
435 | case RATE_MCS_CHAN_WIDTH_80: | |
da6a4352 | 436 | rx_status->bw = RATE_INFO_BW_80; |
8ca151b5 JB |
437 | break; |
438 | case RATE_MCS_CHAN_WIDTH_160: | |
da6a4352 | 439 | rx_status->bw = RATE_INFO_BW_160; |
8ca151b5 JB |
440 | break; |
441 | } | |
4c59ff5a SS |
442 | if (!(rate_n_flags & RATE_MCS_CCK_MSK) && |
443 | rate_n_flags & RATE_MCS_SGI_MSK) | |
7fdd69c5 | 444 | rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; |
8ca151b5 | 445 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) |
7fdd69c5 | 446 | rx_status->enc_flags |= RX_ENC_FLAG_HT_GF; |
7b1dd048 | 447 | if (rate_n_flags & RATE_MCS_LDPC_MSK) |
7fdd69c5 | 448 | rx_status->enc_flags |= RX_ENC_FLAG_LDPC; |
8ca151b5 | 449 | if (rate_n_flags & RATE_MCS_HT_MSK) { |
77e40945 | 450 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> |
7b1dd048 | 451 | RATE_MCS_STBC_POS; |
da6a4352 | 452 | rx_status->encoding = RX_ENC_HT; |
d0963b5d | 453 | rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; |
7fdd69c5 | 454 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; |
8ca151b5 | 455 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { |
77e40945 | 456 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> |
7b1dd048 | 457 | RATE_MCS_STBC_POS; |
8613c948 | 458 | rx_status->nss = |
8ca151b5 JB |
459 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> |
460 | RATE_VHT_MCS_NSS_POS) + 1; | |
d0963b5d | 461 | rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; |
da6a4352 | 462 | rx_status->encoding = RX_ENC_VHT; |
7fdd69c5 | 463 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; |
95e05ab7 | 464 | if (rate_n_flags & RATE_MCS_BF_MSK) |
7fdd69c5 | 465 | rx_status->enc_flags |= RX_ENC_FLAG_BF; |
8ca151b5 | 466 | } else { |
cb2de6bb SS |
467 | int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, |
468 | rx_status->band); | |
469 | ||
470 | if (WARN(rate < 0 || rate > 0xFF, | |
471 | "Invalid rate flags 0x%x, band %d,\n", | |
472 | rate_n_flags, rx_status->band)) { | |
473 | kfree_skb(skb); | |
474 | return; | |
475 | } | |
476 | rx_status->rate_idx = rate; | |
8ca151b5 JB |
477 | } |
478 | ||
5fc0f76c | 479 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
2f15a829 | 480 | iwl_mvm_update_frame_stats(mvm, rate_n_flags, |
d0963b5d | 481 | rx_status->flag & RX_FLAG_AMPDU_DETAILS); |
5fc0f76c | 482 | #endif |
a339e918 LC |
483 | |
484 | if (unlikely((ieee80211_is_beacon(hdr->frame_control) || | |
485 | ieee80211_is_probe_resp(hdr->frame_control)) && | |
486 | mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)) | |
487 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND; | |
488 | ||
43ec72b7 JB |
489 | if (unlikely(ieee80211_is_beacon(hdr->frame_control) || |
490 | ieee80211_is_probe_resp(hdr->frame_control))) | |
491 | rx_status->boottime_ns = ktime_get_boot_ns(); | |
492 | ||
16e4dd8f LC |
493 | /* Take a reference briefly to kick off a d0i3 entry delay so |
494 | * we can handle bursts of RX packets without toggling the | |
495 | * state too often. But don't do this for beacons if we are | |
496 | * going to idle because the beacon filtering changes we make | |
497 | * cause the firmware to send us collateral beacons. */ | |
498 | take_ref = !(test_bit(STATUS_TRANS_GOING_IDLE, &mvm->trans->status) && | |
499 | ieee80211_is_beacon(hdr->frame_control)); | |
500 | ||
501 | if (take_ref) | |
502 | iwl_mvm_ref(mvm, IWL_MVM_REF_RX); | |
503 | ||
43ec72b7 | 504 | iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len, |
bdbc58ab | 505 | crypt_len, rxb); |
16e4dd8f LC |
506 | |
507 | if (take_ref) | |
508 | iwl_mvm_unref(mvm, IWL_MVM_REF_RX); | |
8ca151b5 | 509 | } |
9ee718aa | 510 | |
a20fd398 | 511 | struct iwl_mvm_stat_data { |
a20fd398 | 512 | struct iwl_mvm *mvm; |
777c9b6b | 513 | __le32 mac_id; |
62e004fe | 514 | u8 beacon_filter_average_energy; |
0e7ac018 | 515 | void *general; |
a20fd398 AO |
516 | }; |
517 | ||
518 | static void iwl_mvm_stat_iterator(void *_data, u8 *mac, | |
519 | struct ieee80211_vif *vif) | |
520 | { | |
521 | struct iwl_mvm_stat_data *data = _data; | |
a20fd398 | 522 | struct iwl_mvm *mvm = data->mvm; |
777c9b6b | 523 | int sig = -data->beacon_filter_average_energy; |
a20fd398 AO |
524 | int last_event; |
525 | int thold = vif->bss_conf.cqm_rssi_thold; | |
526 | int hyst = vif->bss_conf.cqm_rssi_hyst; | |
777c9b6b | 527 | u16 id = le32_to_cpu(data->mac_id); |
a20fd398 AO |
528 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
529 | ||
33cef925 JB |
530 | /* This doesn't need the MAC ID check since it's not taking the |
531 | * data copied into the "data" struct, but rather the data from | |
532 | * the notification directly. | |
533 | */ | |
534 | if (data->general) { | |
0e7ac018 SS |
535 | u16 vif_id = mvmvif->id; |
536 | ||
537 | if (iwl_mvm_is_cdb_supported(mvm)) { | |
538 | struct mvm_statistics_general_cdb *general = | |
539 | data->general; | |
540 | ||
541 | mvmvif->beacon_stats.num_beacons = | |
542 | le32_to_cpu(general->beacon_counter[vif_id]); | |
543 | mvmvif->beacon_stats.avg_signal = | |
544 | -general->beacon_average_energy[vif_id]; | |
545 | } else { | |
546 | struct mvm_statistics_general_v8 *general = | |
547 | data->general; | |
548 | ||
549 | mvmvif->beacon_stats.num_beacons = | |
550 | le32_to_cpu(general->beacon_counter[vif_id]); | |
551 | mvmvif->beacon_stats.avg_signal = | |
552 | -general->beacon_average_energy[vif_id]; | |
553 | } | |
33cef925 JB |
554 | } |
555 | ||
a20fd398 AO |
556 | if (mvmvif->id != id) |
557 | return; | |
558 | ||
559 | if (vif->type != NL80211_IFTYPE_STATION) | |
560 | return; | |
561 | ||
8047cc0c AB |
562 | if (sig == 0) { |
563 | IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n"); | |
564 | return; | |
565 | } | |
566 | ||
a20fd398 AO |
567 | mvmvif->bf_data.ave_beacon_signal = sig; |
568 | ||
911222b5 AO |
569 | /* BT Coex */ |
570 | if (mvmvif->bf_data.bt_coex_min_thold != | |
571 | mvmvif->bf_data.bt_coex_max_thold) { | |
572 | last_event = mvmvif->bf_data.last_bt_coex_event; | |
573 | if (sig > mvmvif->bf_data.bt_coex_max_thold && | |
574 | (last_event <= mvmvif->bf_data.bt_coex_min_thold || | |
575 | last_event == 0)) { | |
576 | mvmvif->bf_data.last_bt_coex_event = sig; | |
577 | IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n", | |
578 | sig); | |
579 | iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH); | |
580 | } else if (sig < mvmvif->bf_data.bt_coex_min_thold && | |
581 | (last_event >= mvmvif->bf_data.bt_coex_max_thold || | |
582 | last_event == 0)) { | |
583 | mvmvif->bf_data.last_bt_coex_event = sig; | |
584 | IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n", | |
585 | sig); | |
586 | iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW); | |
587 | } | |
588 | } | |
589 | ||
a20fd398 AO |
590 | if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) |
591 | return; | |
592 | ||
593 | /* CQM Notification */ | |
594 | last_event = mvmvif->bf_data.last_cqm_event; | |
595 | if (thold && sig < thold && (last_event == 0 || | |
596 | sig < last_event - hyst)) { | |
597 | mvmvif->bf_data.last_cqm_event = sig; | |
598 | IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", | |
599 | sig); | |
600 | ieee80211_cqm_rssi_notify( | |
601 | vif, | |
602 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
769f07d8 | 603 | sig, |
a20fd398 AO |
604 | GFP_KERNEL); |
605 | } else if (sig > thold && | |
606 | (last_event == 0 || sig > last_event + hyst)) { | |
607 | mvmvif->bf_data.last_cqm_event = sig; | |
608 | IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", | |
609 | sig); | |
610 | ieee80211_cqm_rssi_notify( | |
611 | vif, | |
612 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
769f07d8 | 613 | sig, |
a20fd398 AO |
614 | GFP_KERNEL); |
615 | } | |
616 | } | |
617 | ||
5a756c20 EG |
618 | static inline void |
619 | iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) | |
620 | { | |
621 | struct iwl_fw_dbg_trigger_tlv *trig; | |
622 | struct iwl_fw_dbg_trigger_stats *trig_stats; | |
623 | u32 trig_offset, trig_thold; | |
624 | ||
625 | if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_STATS)) | |
626 | return; | |
627 | ||
628 | trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_STATS); | |
629 | trig_stats = (void *)trig->data; | |
630 | ||
7174beb6 | 631 | if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig)) |
5a756c20 EG |
632 | return; |
633 | ||
634 | trig_offset = le32_to_cpu(trig_stats->stop_offset); | |
635 | trig_thold = le32_to_cpu(trig_stats->stop_threshold); | |
636 | ||
637 | if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt))) | |
638 | return; | |
639 | ||
640 | if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold) | |
641 | return; | |
642 | ||
7174beb6 | 643 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL); |
5a756c20 EG |
644 | } |
645 | ||
91a8bcde JB |
646 | void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm, |
647 | struct iwl_rx_packet *pkt) | |
9ee718aa | 648 | { |
a20fd398 | 649 | struct iwl_mvm_stat_data data = { |
a20fd398 AO |
650 | .mvm = mvm, |
651 | }; | |
0e7ac018 | 652 | int expected_size; |
cfbeb598 GM |
653 | int i; |
654 | u8 *energy; | |
655 | __le32 *bytes, *air_time; | |
678d9b6d | 656 | __le32 flags; |
0e7ac018 | 657 | |
678d9b6d LK |
658 | if (!iwl_mvm_has_new_rx_stats_api(mvm)) { |
659 | if (iwl_mvm_has_new_rx_api(mvm)) | |
660 | expected_size = sizeof(struct iwl_notif_statistics_v11); | |
661 | else | |
662 | expected_size = sizeof(struct iwl_notif_statistics_v10); | |
663 | } else { | |
664 | expected_size = sizeof(struct iwl_notif_statistics_cdb); | |
665 | } | |
777c9b6b | 666 | |
42fa5e0e JB |
667 | if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size, |
668 | "received invalid statistics size (%d)!\n", | |
669 | iwl_rx_packet_payload_len(pkt))) | |
6a90f85a | 670 | return; |
777c9b6b | 671 | |
678d9b6d LK |
672 | if (!iwl_mvm_has_new_rx_stats_api(mvm)) { |
673 | struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data; | |
777c9b6b | 674 | |
678d9b6d LK |
675 | data.mac_id = stats->rx.general.mac_id; |
676 | data.beacon_filter_average_energy = | |
677 | stats->general.common.beacon_filter_average_energy; | |
777c9b6b | 678 | |
678d9b6d | 679 | mvm->rx_stats_v3 = stats->rx; |
91a8bcde | 680 | |
678d9b6d LK |
681 | mvm->radio_stats.rx_time = |
682 | le64_to_cpu(stats->general.common.rx_time); | |
683 | mvm->radio_stats.tx_time = | |
684 | le64_to_cpu(stats->general.common.tx_time); | |
685 | mvm->radio_stats.on_time_rf = | |
686 | le64_to_cpu(stats->general.common.on_time_rf); | |
687 | mvm->radio_stats.on_time_scan = | |
688 | le64_to_cpu(stats->general.common.on_time_scan); | |
689 | ||
690 | data.general = &stats->general; | |
691 | ||
692 | flags = stats->flag; | |
693 | } else { | |
694 | struct iwl_notif_statistics_cdb *stats = (void *)&pkt->data; | |
695 | ||
696 | data.mac_id = stats->rx.general.mac_id; | |
697 | data.beacon_filter_average_energy = | |
698 | stats->general.common.beacon_filter_average_energy; | |
699 | ||
700 | mvm->rx_stats = stats->rx; | |
701 | ||
702 | mvm->radio_stats.rx_time = | |
703 | le64_to_cpu(stats->general.common.rx_time); | |
704 | mvm->radio_stats.tx_time = | |
705 | le64_to_cpu(stats->general.common.tx_time); | |
706 | mvm->radio_stats.on_time_rf = | |
707 | le64_to_cpu(stats->general.common.on_time_rf); | |
708 | mvm->radio_stats.on_time_scan = | |
709 | le64_to_cpu(stats->general.common.on_time_scan); | |
710 | ||
711 | data.general = &stats->general; | |
712 | ||
713 | flags = stats->flag; | |
714 | } | |
9ee718aa | 715 | |
5a756c20 EG |
716 | iwl_mvm_rx_stats_check_trigger(mvm, pkt); |
717 | ||
a20fd398 AO |
718 | ieee80211_iterate_active_interfaces(mvm->hw, |
719 | IEEE80211_IFACE_ITER_NORMAL, | |
720 | iwl_mvm_stat_iterator, | |
721 | &data); | |
cfbeb598 GM |
722 | |
723 | if (!iwl_mvm_has_new_rx_api(mvm)) | |
724 | return; | |
725 | ||
678d9b6d LK |
726 | if (!iwl_mvm_has_new_rx_stats_api(mvm)) { |
727 | struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data; | |
cfbeb598 GM |
728 | |
729 | energy = (void *)&v11->load_stats.avg_energy; | |
730 | bytes = (void *)&v11->load_stats.byte_count; | |
731 | air_time = (void *)&v11->load_stats.air_time; | |
732 | } else { | |
678d9b6d LK |
733 | struct iwl_notif_statistics_cdb *stats = (void *)&pkt->data; |
734 | ||
cfbeb598 GM |
735 | energy = (void *)&stats->load_stats.avg_energy; |
736 | bytes = (void *)&stats->load_stats.byte_count; | |
737 | air_time = (void *)&stats->load_stats.air_time; | |
738 | } | |
739 | ||
740 | rcu_read_lock(); | |
741 | for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { | |
742 | struct iwl_mvm_sta *sta; | |
743 | ||
744 | if (!energy[i]) | |
745 | continue; | |
746 | ||
747 | sta = iwl_mvm_sta_from_staid_rcu(mvm, i); | |
748 | if (!sta) | |
749 | continue; | |
750 | sta->avg_energy = energy[i]; | |
751 | } | |
752 | rcu_read_unlock(); | |
91a8bcde JB |
753 | } |
754 | ||
0416841d | 755 | void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
91a8bcde JB |
756 | { |
757 | iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb)); | |
9ee718aa | 758 | } |
3af512d6 SS |
759 | |
760 | void iwl_mvm_window_status_notif(struct iwl_mvm *mvm, | |
761 | struct iwl_rx_cmd_buffer *rxb) | |
762 | { | |
763 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
764 | struct iwl_ba_window_status_notif *notif = (void *)pkt->data; | |
765 | int i; | |
766 | u32 pkt_len = iwl_rx_packet_payload_len(pkt); | |
767 | ||
768 | if (WARN_ONCE(pkt_len != sizeof(*notif), | |
769 | "Received window status notification of wrong size (%u)\n", | |
770 | pkt_len)) | |
771 | return; | |
772 | ||
773 | rcu_read_lock(); | |
774 | for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) { | |
775 | struct ieee80211_sta *sta; | |
776 | u8 sta_id, tid; | |
777 | u64 bitmap; | |
778 | u32 ssn; | |
779 | u16 ratid; | |
780 | u16 received_mpdu; | |
781 | ||
782 | ratid = le16_to_cpu(notif->ra_tid[i]); | |
783 | /* check that this TID is valid */ | |
784 | if (!(ratid & BA_WINDOW_STATUS_VALID_MSK)) | |
785 | continue; | |
786 | ||
787 | received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]); | |
788 | if (received_mpdu == 0) | |
789 | continue; | |
790 | ||
791 | tid = ratid & BA_WINDOW_STATUS_TID_MSK; | |
792 | /* get the station */ | |
793 | sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK) | |
794 | >> BA_WINDOW_STATUS_STA_ID_POS; | |
795 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
796 | if (IS_ERR_OR_NULL(sta)) | |
797 | continue; | |
798 | bitmap = le64_to_cpu(notif->bitmap[i]); | |
799 | ssn = le32_to_cpu(notif->start_seq_num[i]); | |
800 | ||
801 | /* update mac80211 with the bitmap for the reordering buffer */ | |
802 | ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap, | |
803 | received_mpdu); | |
804 | } | |
805 | rcu_read_unlock(); | |
806 | } |