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780e87c2 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 | * | |
8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. | |
9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
9c36fd71 | 10 | * Copyright(c) 2015 - 2017 Intel Deutschland GmbH |
d47cdb88 | 11 | * Copyright(c) 2018 - 2019 Intel Corporation |
780e87c2 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 | * | |
22 | * The full GNU General Public License is included in this distribution | |
23 | * in the file called COPYING. | |
24 | * | |
25 | * Contact Information: | |
924f838b | 26 | * Intel Linux Wireless <linuxwifi@intel.com> |
780e87c2 JB |
27 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
28 | * | |
29 | * BSD LICENSE | |
30 | * | |
31 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. | |
32 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
9c36fd71 | 33 | * Copyright(c) 2015 - 2017 Intel Deutschland GmbH |
d47cdb88 | 34 | * Copyright(c) 2018 - 2019 Intel Corporation |
780e87c2 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 | *****************************************************************************/ | |
63 | #include <linux/etherdevice.h> | |
64 | #include <linux/skbuff.h> | |
65 | #include "iwl-trans.h" | |
66 | #include "mvm.h" | |
67 | #include "fw-api.h" | |
780e87c2 | 68 | |
3619b088 JB |
69 | static void *iwl_mvm_skb_get_hdr(struct sk_buff *skb) |
70 | { | |
71 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
72 | u8 *data = skb->data; | |
73 | ||
74 | /* Alignment concerns */ | |
75 | BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he) % 4); | |
76 | BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he_mu) % 4); | |
77 | BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_lsig) % 4); | |
78 | BUILD_BUG_ON(sizeof(struct ieee80211_vendor_radiotap) % 4); | |
79 | ||
80 | if (rx_status->flag & RX_FLAG_RADIOTAP_HE) | |
81 | data += sizeof(struct ieee80211_radiotap_he); | |
82 | if (rx_status->flag & RX_FLAG_RADIOTAP_HE_MU) | |
83 | data += sizeof(struct ieee80211_radiotap_he_mu); | |
84 | if (rx_status->flag & RX_FLAG_RADIOTAP_LSIG) | |
85 | data += sizeof(struct ieee80211_radiotap_lsig); | |
86 | if (rx_status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) { | |
87 | struct ieee80211_vendor_radiotap *radiotap = (void *)data; | |
88 | ||
89 | data += sizeof(*radiotap) + radiotap->len + radiotap->pad; | |
90 | } | |
91 | ||
92 | return data; | |
93 | } | |
94 | ||
f5e28eac JB |
95 | static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb, |
96 | int queue, struct ieee80211_sta *sta) | |
97 | { | |
98 | struct iwl_mvm_sta *mvmsta; | |
3619b088 | 99 | struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb); |
f5e28eac JB |
100 | struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb); |
101 | struct iwl_mvm_key_pn *ptk_pn; | |
5ab2ba93 | 102 | int res; |
f5e28eac JB |
103 | u8 tid, keyidx; |
104 | u8 pn[IEEE80211_CCMP_PN_LEN]; | |
105 | u8 *extiv; | |
106 | ||
107 | /* do PN checking */ | |
108 | ||
109 | /* multicast and non-data only arrives on default queue */ | |
110 | if (!ieee80211_is_data(hdr->frame_control) || | |
111 | is_multicast_ether_addr(hdr->addr1)) | |
112 | return 0; | |
113 | ||
114 | /* do not check PN for open AP */ | |
115 | if (!(stats->flag & RX_FLAG_DECRYPTED)) | |
116 | return 0; | |
117 | ||
118 | /* | |
119 | * avoid checking for default queue - we don't want to replicate | |
120 | * all the logic that's necessary for checking the PN on fragmented | |
121 | * frames, leave that to mac80211 | |
122 | */ | |
123 | if (queue == 0) | |
124 | return 0; | |
125 | ||
126 | /* if we are here - this for sure is either CCMP or GCMP */ | |
127 | if (IS_ERR_OR_NULL(sta)) { | |
128 | IWL_ERR(mvm, | |
129 | "expected hw-decrypted unicast frame for station\n"); | |
130 | return -1; | |
131 | } | |
132 | ||
133 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
134 | ||
135 | extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); | |
136 | keyidx = extiv[3] >> 6; | |
137 | ||
138 | ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]); | |
139 | if (!ptk_pn) | |
140 | return -1; | |
141 | ||
142 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
8f66e064 | 143 | tid = ieee80211_get_tid(hdr); |
f5e28eac JB |
144 | else |
145 | tid = 0; | |
146 | ||
147 | /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */ | |
148 | if (tid >= IWL_MAX_TID_COUNT) | |
149 | return -1; | |
150 | ||
151 | /* load pn */ | |
152 | pn[0] = extiv[7]; | |
153 | pn[1] = extiv[6]; | |
154 | pn[2] = extiv[5]; | |
155 | pn[3] = extiv[4]; | |
156 | pn[4] = extiv[1]; | |
157 | pn[5] = extiv[0]; | |
158 | ||
5ab2ba93 SS |
159 | res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN); |
160 | if (res < 0) | |
161 | return -1; | |
162 | if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN)) | |
f5e28eac JB |
163 | return -1; |
164 | ||
5ab2ba93 | 165 | memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN); |
f5e28eac JB |
166 | stats->flag |= RX_FLAG_PN_VALIDATED; |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | /* iwl_mvm_create_skb Adds the rxb to a new skb */ | |
de1887c0 LC |
172 | static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb, |
173 | struct ieee80211_hdr *hdr, u16 len, u8 crypt_len, | |
174 | struct iwl_rx_cmd_buffer *rxb) | |
780e87c2 | 175 | { |
e29cc6b9 SS |
176 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
177 | struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; | |
178 | unsigned int headlen, fraglen, pad_len = 0; | |
179 | unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); | |
180 | ||
4b40571e | 181 | if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) { |
1e5b7750 | 182 | len -= 2; |
e29cc6b9 | 183 | pad_len = 2; |
4b40571e | 184 | } |
780e87c2 JB |
185 | |
186 | /* If frame is small enough to fit in skb->head, pull it completely. | |
187 | * If not, only pull ieee80211_hdr (including crypto if present, and | |
188 | * an additional 8 bytes for SNAP/ethertype, see below) so that | |
189 | * splice() or TCP coalesce are more efficient. | |
190 | * | |
191 | * Since, in addition, ieee80211_data_to_8023() always pull in at | |
192 | * least 8 bytes (possibly more for mesh) we can do the same here | |
193 | * to save the cost of doing it later. That still doesn't pull in | |
194 | * the actual IP header since the typical case has a SNAP header. | |
195 | * If the latter changes (there are efforts in the standards group | |
196 | * to do so) we should revisit this and ieee80211_data_to_8023(). | |
197 | */ | |
e29cc6b9 SS |
198 | headlen = (len <= skb_tailroom(skb)) ? len : |
199 | hdrlen + crypt_len + 8; | |
780e87c2 | 200 | |
e29cc6b9 SS |
201 | /* The firmware may align the packet to DWORD. |
202 | * The padding is inserted after the IV. | |
203 | * After copying the header + IV skip the padding if | |
204 | * present before copying packet data. | |
205 | */ | |
206 | hdrlen += crypt_len; | |
de1887c0 LC |
207 | |
208 | if (WARN_ONCE(headlen < hdrlen, | |
209 | "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n", | |
210 | hdrlen, len, crypt_len)) { | |
211 | /* | |
212 | * We warn and trace because we want to be able to see | |
213 | * it in trace-cmd as well. | |
214 | */ | |
215 | IWL_DEBUG_RX(mvm, | |
216 | "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n", | |
217 | hdrlen, len, crypt_len); | |
218 | return -EINVAL; | |
219 | } | |
220 | ||
59ae1d12 JB |
221 | skb_put_data(skb, hdr, hdrlen); |
222 | skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen); | |
e29cc6b9 SS |
223 | |
224 | fraglen = len - headlen; | |
780e87c2 JB |
225 | |
226 | if (fraglen) { | |
e29cc6b9 | 227 | int offset = (void *)hdr + headlen + pad_len - |
780e87c2 JB |
228 | rxb_addr(rxb) + rxb_offset(rxb); |
229 | ||
230 | skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, | |
231 | fraglen, rxb->truesize); | |
232 | } | |
de1887c0 LC |
233 | |
234 | return 0; | |
f5e28eac | 235 | } |
780e87c2 | 236 | |
9bf13bee JB |
237 | static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm, |
238 | struct sk_buff *skb) | |
239 | { | |
240 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
241 | struct ieee80211_vendor_radiotap *radiotap; | |
3619b088 | 242 | const int size = sizeof(*radiotap) + sizeof(__le16); |
9bf13bee JB |
243 | |
244 | if (!mvm->cur_aid) | |
245 | return; | |
246 | ||
3619b088 JB |
247 | /* ensure alignment */ |
248 | BUILD_BUG_ON((size + 2) % 4); | |
249 | ||
250 | radiotap = skb_put(skb, size + 2); | |
9bf13bee JB |
251 | radiotap->align = 1; |
252 | /* Intel OUI */ | |
253 | radiotap->oui[0] = 0xf6; | |
254 | radiotap->oui[1] = 0x54; | |
255 | radiotap->oui[2] = 0x25; | |
256 | /* radiotap sniffer config sub-namespace */ | |
257 | radiotap->subns = 1; | |
258 | radiotap->present = 0x1; | |
259 | radiotap->len = size - sizeof(*radiotap); | |
3619b088 | 260 | radiotap->pad = 2; |
9bf13bee JB |
261 | |
262 | /* fill the data now */ | |
263 | memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid)); | |
3619b088 JB |
264 | /* and clear the padding */ |
265 | memset(radiotap->data + sizeof(__le16), 0, radiotap->pad); | |
9bf13bee JB |
266 | |
267 | rx_status->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA; | |
268 | } | |
269 | ||
f5e28eac JB |
270 | /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */ |
271 | static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, | |
272 | struct napi_struct *napi, | |
273 | struct sk_buff *skb, int queue, | |
9bf13bee JB |
274 | struct ieee80211_sta *sta, |
275 | bool csi) | |
f5e28eac | 276 | { |
ed714460 | 277 | if (iwl_mvm_check_pn(mvm, skb, queue, sta)) |
f5e28eac | 278 | kfree_skb(skb); |
5213e8a8 | 279 | else |
43ec72b7 | 280 | ieee80211_rx_napi(mvm->hw, sta, skb, napi); |
780e87c2 JB |
281 | } |
282 | ||
283 | static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, | |
18ead597 GBA |
284 | struct ieee80211_rx_status *rx_status, |
285 | u32 rate_n_flags, int energy_a, | |
286 | int energy_b) | |
780e87c2 | 287 | { |
18ead597 GBA |
288 | int max_energy; |
289 | u32 rate_flags = rate_n_flags; | |
780e87c2 | 290 | |
780e87c2 | 291 | energy_a = energy_a ? -energy_a : S8_MIN; |
780e87c2 | 292 | energy_b = energy_b ? -energy_b : S8_MIN; |
780e87c2 | 293 | max_energy = max(energy_a, energy_b); |
780e87c2 | 294 | |
d56a7801 SS |
295 | IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n", |
296 | energy_a, energy_b, max_energy); | |
780e87c2 JB |
297 | |
298 | rx_status->signal = max_energy; | |
c4e45c84 ST |
299 | rx_status->chains = |
300 | (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS; | |
780e87c2 JB |
301 | rx_status->chain_signal[0] = energy_a; |
302 | rx_status->chain_signal[1] = energy_b; | |
d56a7801 | 303 | rx_status->chain_signal[2] = S8_MIN; |
780e87c2 JB |
304 | } |
305 | ||
f5e28eac | 306 | static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, |
fabdcc2e SS |
307 | struct ieee80211_rx_status *stats, u16 phy_info, |
308 | struct iwl_rx_mpdu_desc *desc, | |
309 | u32 pkt_flags, int queue, u8 *crypt_len) | |
780e87c2 JB |
310 | { |
311 | u16 status = le16_to_cpu(desc->status); | |
312 | ||
fabdcc2e SS |
313 | /* |
314 | * Drop UNKNOWN frames in aggregation, unless in monitor mode | |
315 | * (where we don't have the keys). | |
316 | * We limit this to aggregation because in TKIP this is a valid | |
317 | * scenario, since we may not have the (correct) TTAK (phase 1 | |
318 | * key) in the firmware. | |
319 | */ | |
320 | if (phy_info & IWL_RX_MPDU_PHY_AMPDU && | |
321 | (status & IWL_RX_MPDU_STATUS_SEC_MASK) == | |
322 | IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on) | |
323 | return -1; | |
324 | ||
780e87c2 JB |
325 | if (!ieee80211_has_protected(hdr->frame_control) || |
326 | (status & IWL_RX_MPDU_STATUS_SEC_MASK) == | |
327 | IWL_RX_MPDU_STATUS_SEC_NONE) | |
328 | return 0; | |
329 | ||
330 | /* TODO: handle packets encrypted with unknown alg */ | |
331 | ||
332 | switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) { | |
333 | case IWL_RX_MPDU_STATUS_SEC_CCM: | |
334 | case IWL_RX_MPDU_STATUS_SEC_GCM: | |
f5e28eac | 335 | BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN); |
780e87c2 JB |
336 | /* alg is CCM: check MIC only */ |
337 | if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) | |
338 | return -1; | |
339 | ||
340 | stats->flag |= RX_FLAG_DECRYPTED; | |
bf190370 SS |
341 | if (pkt_flags & FH_RSCSR_RADA_EN) |
342 | stats->flag |= RX_FLAG_MIC_STRIPPED; | |
780e87c2 JB |
343 | *crypt_len = IEEE80211_CCMP_HDR_LEN; |
344 | return 0; | |
345 | case IWL_RX_MPDU_STATUS_SEC_TKIP: | |
346 | /* Don't drop the frame and decrypt it in SW */ | |
57df3839 SS |
347 | if (!fw_has_api(&mvm->fw->ucode_capa, |
348 | IWL_UCODE_TLV_API_DEPRECATE_TTAK) && | |
349 | !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK)) | |
780e87c2 JB |
350 | return 0; |
351 | ||
286ca8eb | 352 | if (mvm->trans->trans_cfg->gen2 && |
7f768ad5 DS |
353 | !(status & RX_MPDU_RES_STATUS_MIC_OK)) |
354 | stats->flag |= RX_FLAG_MMIC_ERROR; | |
355 | ||
780e87c2 | 356 | *crypt_len = IEEE80211_TKIP_IV_LEN; |
244726ec | 357 | /* fall through */ |
780e87c2 JB |
358 | case IWL_RX_MPDU_STATUS_SEC_WEP: |
359 | if (!(status & IWL_RX_MPDU_STATUS_ICV_OK)) | |
360 | return -1; | |
361 | ||
362 | stats->flag |= RX_FLAG_DECRYPTED; | |
363 | if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == | |
364 | IWL_RX_MPDU_STATUS_SEC_WEP) | |
365 | *crypt_len = IEEE80211_WEP_IV_LEN; | |
9d0fc5a5 | 366 | |
7f768ad5 | 367 | if (pkt_flags & FH_RSCSR_RADA_EN) { |
9d0fc5a5 | 368 | stats->flag |= RX_FLAG_ICV_STRIPPED; |
286ca8eb | 369 | if (mvm->trans->trans_cfg->gen2) |
7f768ad5 DS |
370 | stats->flag |= RX_FLAG_MMIC_STRIPPED; |
371 | } | |
9d0fc5a5 | 372 | |
780e87c2 JB |
373 | return 0; |
374 | case IWL_RX_MPDU_STATUS_SEC_EXT_ENC: | |
375 | if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) | |
376 | return -1; | |
377 | stats->flag |= RX_FLAG_DECRYPTED; | |
378 | return 0; | |
379 | default: | |
94b952b5 EG |
380 | /* |
381 | * Sometimes we can get frames that were not decrypted | |
382 | * because the firmware didn't have the keys yet. This can | |
383 | * happen after connection where we can get multicast frames | |
384 | * before the GTK is installed. | |
385 | * Silently drop those frames. | |
386 | * Also drop un-decrypted frames in monitor mode. | |
387 | */ | |
388 | if (!is_multicast_ether_addr(hdr->addr1) && | |
389 | !mvm->monitor_on && net_ratelimit()) | |
baf41bc3 | 390 | IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status); |
780e87c2 JB |
391 | } |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
396 | static void iwl_mvm_rx_csum(struct ieee80211_sta *sta, | |
397 | struct sk_buff *skb, | |
398 | struct iwl_rx_mpdu_desc *desc) | |
399 | { | |
400 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
401 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); | |
b238be07 SS |
402 | u16 flags = le16_to_cpu(desc->l3l4_flags); |
403 | u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >> | |
404 | IWL_RX_L3_PROTO_POS); | |
780e87c2 JB |
405 | |
406 | if (mvmvif->features & NETIF_F_RXCSUM && | |
b238be07 SS |
407 | flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK && |
408 | (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK || | |
409 | l3_prot == IWL_RX_L3_TYPE_IPV6 || | |
410 | l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG)) | |
780e87c2 JB |
411 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
412 | } | |
413 | ||
a571f5f6 | 414 | /* |
5ab2ba93 SS |
415 | * returns true if a packet is a duplicate and should be dropped. |
416 | * Updates AMSDU PN tracking info | |
a571f5f6 | 417 | */ |
5ab2ba93 SS |
418 | static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue, |
419 | struct ieee80211_rx_status *rx_status, | |
420 | struct ieee80211_hdr *hdr, | |
421 | struct iwl_rx_mpdu_desc *desc) | |
a571f5f6 SS |
422 | { |
423 | struct iwl_mvm_sta *mvm_sta; | |
424 | struct iwl_mvm_rxq_dup_data *dup_data; | |
5ab2ba93 | 425 | u8 tid, sub_frame_idx; |
a571f5f6 SS |
426 | |
427 | if (WARN_ON(IS_ERR_OR_NULL(sta))) | |
428 | return false; | |
429 | ||
a571f5f6 SS |
430 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
431 | dup_data = &mvm_sta->dup_data[queue]; | |
432 | ||
433 | /* | |
434 | * Drop duplicate 802.11 retransmissions | |
435 | * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery") | |
436 | */ | |
437 | if (ieee80211_is_ctl(hdr->frame_control) || | |
438 | ieee80211_is_qos_nullfunc(hdr->frame_control) || | |
439 | is_multicast_ether_addr(hdr->addr1)) { | |
440 | rx_status->flag |= RX_FLAG_DUP_VALIDATED; | |
441 | return false; | |
442 | } | |
443 | ||
444 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
445 | /* frame has qos control */ | |
8f66e064 | 446 | tid = ieee80211_get_tid(hdr); |
a571f5f6 SS |
447 | else |
448 | tid = IWL_MAX_TID_COUNT; | |
449 | ||
450 | /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */ | |
18ead597 GBA |
451 | sub_frame_idx = desc->amsdu_info & |
452 | IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; | |
a571f5f6 SS |
453 | |
454 | if (unlikely(ieee80211_has_retry(hdr->frame_control) && | |
455 | dup_data->last_seq[tid] == hdr->seq_ctrl && | |
456 | dup_data->last_sub_frame[tid] >= sub_frame_idx)) | |
457 | return true; | |
458 | ||
5ab2ba93 SS |
459 | /* Allow same PN as the first subframe for following sub frames */ |
460 | if (dup_data->last_seq[tid] == hdr->seq_ctrl && | |
461 | sub_frame_idx > dup_data->last_sub_frame[tid] && | |
462 | desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) | |
463 | rx_status->flag |= RX_FLAG_ALLOW_SAME_PN; | |
464 | ||
a571f5f6 SS |
465 | dup_data->last_seq[tid] = hdr->seq_ctrl; |
466 | dup_data->last_sub_frame[tid] = sub_frame_idx; | |
467 | ||
468 | rx_status->flag |= RX_FLAG_DUP_VALIDATED; | |
469 | ||
470 | return false; | |
471 | } | |
472 | ||
94bb4481 | 473 | int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask, |
3c514bf8 | 474 | const u8 *data, u32 count, bool async) |
94bb4481 | 475 | { |
521dc6c7 EG |
476 | u8 buf[sizeof(struct iwl_rxq_sync_cmd) + |
477 | sizeof(struct iwl_mvm_rss_sync_notif)]; | |
478 | struct iwl_rxq_sync_cmd *cmd = (void *)buf; | |
94bb4481 SS |
479 | u32 data_size = sizeof(*cmd) + count; |
480 | int ret; | |
481 | ||
521dc6c7 EG |
482 | /* |
483 | * size must be a multiple of DWORD | |
484 | * Ensure we don't overflow buf | |
485 | */ | |
486 | if (WARN_ON(count & 3 || | |
487 | count > sizeof(struct iwl_mvm_rss_sync_notif))) | |
94bb4481 SS |
488 | return -EINVAL; |
489 | ||
94bb4481 SS |
490 | cmd->rxq_mask = cpu_to_le32(rxq_mask); |
491 | cmd->count = cpu_to_le32(count); | |
492 | cmd->flags = 0; | |
493 | memcpy(cmd->payload, data, count); | |
494 | ||
495 | ret = iwl_mvm_send_cmd_pdu(mvm, | |
496 | WIDE_ID(DATA_PATH_GROUP, | |
497 | TRIGGER_RX_QUEUES_NOTIF_CMD), | |
3c514bf8 | 498 | async ? CMD_ASYNC : 0, data_size, cmd); |
94bb4481 | 499 | |
94bb4481 SS |
500 | return ret; |
501 | } | |
502 | ||
74dd1764 SS |
503 | /* |
504 | * Returns true if sn2 - buffer_size < sn1 < sn2. | |
505 | * To be used only in order to compare reorder buffer head with NSSN. | |
506 | * We fully trust NSSN unless it is behind us due to reorder timeout. | |
507 | * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN. | |
508 | */ | |
509 | static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size) | |
510 | { | |
511 | return ieee80211_sn_less(sn1, sn2) && | |
512 | !ieee80211_sn_less(sn1, sn2 - buffer_size); | |
513 | } | |
514 | ||
3c514bf8 EG |
515 | static void iwl_mvm_sync_nssn(struct iwl_mvm *mvm, u8 baid, u16 nssn) |
516 | { | |
517 | struct iwl_mvm_rss_sync_notif notif = { | |
518 | .metadata.type = IWL_MVM_RXQ_NSSN_SYNC, | |
519 | .metadata.sync = 0, | |
520 | .nssn_sync.baid = baid, | |
521 | .nssn_sync.nssn = nssn, | |
522 | }; | |
523 | ||
524 | iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); | |
525 | } | |
526 | ||
0690405f SS |
527 | #define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10) |
528 | ||
ecd09ddc EG |
529 | enum iwl_mvm_release_flags { |
530 | IWL_MVM_RELEASE_SEND_RSS_SYNC = BIT(0), | |
531 | IWL_MVM_RELEASE_FROM_RSS_SYNC = BIT(1), | |
532 | }; | |
533 | ||
b915c101 SS |
534 | static void iwl_mvm_release_frames(struct iwl_mvm *mvm, |
535 | struct ieee80211_sta *sta, | |
536 | struct napi_struct *napi, | |
76f4a85e | 537 | struct iwl_mvm_baid_data *baid_data, |
b915c101 | 538 | struct iwl_mvm_reorder_buffer *reorder_buf, |
ecd09ddc | 539 | u16 nssn, u32 flags) |
b915c101 | 540 | { |
dfdddd92 JB |
541 | struct iwl_mvm_reorder_buf_entry *entries = |
542 | &baid_data->entries[reorder_buf->queue * | |
543 | baid_data->entries_per_queue]; | |
b915c101 SS |
544 | u16 ssn = reorder_buf->head_sn; |
545 | ||
0690405f SS |
546 | lockdep_assert_held(&reorder_buf->lock); |
547 | ||
ecd09ddc EG |
548 | /* |
549 | * We keep the NSSN not too far behind, if we are sync'ing it and it | |
550 | * is more than 2048 ahead of us, it must be behind us. Discard it. | |
551 | * This can happen if the queue that hit the 0 / 2048 seqno was lagging | |
552 | * behind and this queue already processed packets. The next if | |
553 | * would have caught cases where this queue would have processed less | |
554 | * than 64 packets, but it may have processed more than 64 packets. | |
555 | */ | |
556 | if ((flags & IWL_MVM_RELEASE_FROM_RSS_SYNC) && | |
557 | ieee80211_sn_less(nssn, ssn)) | |
558 | goto set_timer; | |
559 | ||
0690405f | 560 | /* ignore nssn smaller than head sn - this can happen due to timeout */ |
74dd1764 | 561 | if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size)) |
5351f9ab | 562 | goto set_timer; |
0690405f | 563 | |
74dd1764 | 564 | while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) { |
b915c101 | 565 | int index = ssn % reorder_buf->buf_size; |
dfdddd92 | 566 | struct sk_buff_head *skb_list = &entries[index].e.frames; |
b915c101 SS |
567 | struct sk_buff *skb; |
568 | ||
569 | ssn = ieee80211_sn_inc(ssn); | |
ecd09ddc EG |
570 | if ((flags & IWL_MVM_RELEASE_SEND_RSS_SYNC) && |
571 | (ssn == 2048 || ssn == 0)) | |
3c514bf8 | 572 | iwl_mvm_sync_nssn(mvm, baid_data->baid, ssn); |
b915c101 | 573 | |
5a710b86 SS |
574 | /* |
575 | * Empty the list. Will have more than one frame for A-MSDU. | |
576 | * Empty list is valid as well since nssn indicates frames were | |
577 | * received. | |
578 | */ | |
b915c101 SS |
579 | while ((skb = __skb_dequeue(skb_list))) { |
580 | iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, | |
581 | reorder_buf->queue, | |
9bf13bee | 582 | sta, false); |
b915c101 SS |
583 | reorder_buf->num_stored--; |
584 | } | |
585 | } | |
586 | reorder_buf->head_sn = nssn; | |
0690405f | 587 | |
5351f9ab | 588 | set_timer: |
0690405f SS |
589 | if (reorder_buf->num_stored && !reorder_buf->removed) { |
590 | u16 index = reorder_buf->head_sn % reorder_buf->buf_size; | |
591 | ||
dfdddd92 | 592 | while (skb_queue_empty(&entries[index].e.frames)) |
0690405f SS |
593 | index = (index + 1) % reorder_buf->buf_size; |
594 | /* modify timer to match next frame's expiration time */ | |
595 | mod_timer(&reorder_buf->reorder_timer, | |
dfdddd92 | 596 | entries[index].e.reorder_time + 1 + |
0690405f SS |
597 | RX_REORDER_BUF_TIMEOUT_MQ); |
598 | } else { | |
599 | del_timer(&reorder_buf->reorder_timer); | |
600 | } | |
601 | } | |
602 | ||
8cef5344 | 603 | void iwl_mvm_reorder_timer_expired(struct timer_list *t) |
0690405f | 604 | { |
8cef5344 | 605 | struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer); |
dfdddd92 JB |
606 | struct iwl_mvm_baid_data *baid_data = |
607 | iwl_mvm_baid_data_from_reorder_buf(buf); | |
608 | struct iwl_mvm_reorder_buf_entry *entries = | |
609 | &baid_data->entries[buf->queue * baid_data->entries_per_queue]; | |
0690405f SS |
610 | int i; |
611 | u16 sn = 0, index = 0; | |
612 | bool expired = false; | |
9c36fd71 | 613 | bool cont = false; |
0690405f | 614 | |
9b856836 | 615 | spin_lock(&buf->lock); |
0690405f SS |
616 | |
617 | if (!buf->num_stored || buf->removed) { | |
9b856836 | 618 | spin_unlock(&buf->lock); |
0690405f SS |
619 | return; |
620 | } | |
621 | ||
622 | for (i = 0; i < buf->buf_size ; i++) { | |
623 | index = (buf->head_sn + i) % buf->buf_size; | |
624 | ||
dfdddd92 | 625 | if (skb_queue_empty(&entries[index].e.frames)) { |
9c36fd71 SS |
626 | /* |
627 | * If there is a hole and the next frame didn't expire | |
628 | * we want to break and not advance SN | |
629 | */ | |
630 | cont = false; | |
0690405f | 631 | continue; |
9c36fd71 | 632 | } |
dfdddd92 JB |
633 | if (!cont && |
634 | !time_after(jiffies, entries[index].e.reorder_time + | |
9c36fd71 | 635 | RX_REORDER_BUF_TIMEOUT_MQ)) |
0690405f | 636 | break; |
9c36fd71 | 637 | |
0690405f | 638 | expired = true; |
9c36fd71 SS |
639 | /* continue until next hole after this expired frames */ |
640 | cont = true; | |
0690405f SS |
641 | sn = ieee80211_sn_add(buf->head_sn, i + 1); |
642 | } | |
643 | ||
644 | if (expired) { | |
645 | struct ieee80211_sta *sta; | |
528a542a | 646 | struct iwl_mvm_sta *mvmsta; |
3f1c4c58 | 647 | u8 sta_id = baid_data->sta_id; |
0690405f SS |
648 | |
649 | rcu_read_lock(); | |
3f1c4c58 | 650 | sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]); |
528a542a EG |
651 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
652 | ||
0690405f | 653 | /* SN is set to the last expired frame + 1 */ |
35263a03 SS |
654 | IWL_DEBUG_HT(buf->mvm, |
655 | "Releasing expired frames for sta %u, sn %d\n", | |
3f1c4c58 | 656 | sta_id, sn); |
528a542a | 657 | iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif, |
3f1c4c58 | 658 | sta, baid_data->tid); |
3c514bf8 | 659 | iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data, |
ecd09ddc | 660 | buf, sn, IWL_MVM_RELEASE_SEND_RSS_SYNC); |
0690405f | 661 | rcu_read_unlock(); |
aeb8012c | 662 | } else { |
0690405f SS |
663 | /* |
664 | * If no frame expired and there are stored frames, index is now | |
665 | * pointing to the first unexpired frame - modify timer | |
666 | * accordingly to this frame. | |
667 | */ | |
668 | mod_timer(&buf->reorder_timer, | |
dfdddd92 | 669 | entries[index].e.reorder_time + |
0690405f SS |
670 | 1 + RX_REORDER_BUF_TIMEOUT_MQ); |
671 | } | |
9b856836 | 672 | spin_unlock(&buf->lock); |
b915c101 SS |
673 | } |
674 | ||
675 | static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue, | |
676 | struct iwl_mvm_delba_data *data) | |
677 | { | |
678 | struct iwl_mvm_baid_data *ba_data; | |
679 | struct ieee80211_sta *sta; | |
680 | struct iwl_mvm_reorder_buffer *reorder_buf; | |
681 | u8 baid = data->baid; | |
682 | ||
fd659f8e | 683 | if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid)) |
b915c101 SS |
684 | return; |
685 | ||
686 | rcu_read_lock(); | |
687 | ||
688 | ba_data = rcu_dereference(mvm->baid_map[baid]); | |
689 | if (WARN_ON_ONCE(!ba_data)) | |
690 | goto out; | |
691 | ||
692 | sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]); | |
693 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) | |
694 | goto out; | |
695 | ||
696 | reorder_buf = &ba_data->reorder_buf[queue]; | |
697 | ||
698 | /* release all frames that are in the reorder buffer to the stack */ | |
0690405f | 699 | spin_lock_bh(&reorder_buf->lock); |
76f4a85e | 700 | iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf, |
b915c101 | 701 | ieee80211_sn_add(reorder_buf->head_sn, |
3c514bf8 | 702 | reorder_buf->buf_size), |
ecd09ddc | 703 | 0); |
0690405f SS |
704 | spin_unlock_bh(&reorder_buf->lock); |
705 | del_timer_sync(&reorder_buf->reorder_timer); | |
b915c101 SS |
706 | |
707 | out: | |
708 | rcu_read_unlock(); | |
709 | } | |
710 | ||
c61b655a EG |
711 | static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm, |
712 | struct napi_struct *napi, | |
ecd09ddc EG |
713 | u8 baid, u16 nssn, int queue, |
714 | u32 flags) | |
c61b655a EG |
715 | { |
716 | struct ieee80211_sta *sta; | |
717 | struct iwl_mvm_reorder_buffer *reorder_buf; | |
718 | struct iwl_mvm_baid_data *ba_data; | |
719 | ||
720 | IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n", | |
721 | baid, nssn); | |
722 | ||
723 | if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID || | |
724 | baid >= ARRAY_SIZE(mvm->baid_map))) | |
725 | return; | |
726 | ||
727 | rcu_read_lock(); | |
728 | ||
729 | ba_data = rcu_dereference(mvm->baid_map[baid]); | |
730 | if (WARN_ON_ONCE(!ba_data)) | |
731 | goto out; | |
732 | ||
733 | sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]); | |
734 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) | |
735 | goto out; | |
736 | ||
737 | reorder_buf = &ba_data->reorder_buf[queue]; | |
738 | ||
739 | spin_lock_bh(&reorder_buf->lock); | |
3c514bf8 | 740 | iwl_mvm_release_frames(mvm, sta, napi, ba_data, |
ecd09ddc | 741 | reorder_buf, nssn, flags); |
c61b655a EG |
742 | spin_unlock_bh(&reorder_buf->lock); |
743 | ||
744 | out: | |
745 | rcu_read_unlock(); | |
746 | } | |
747 | ||
748 | static void iwl_mvm_nssn_sync(struct iwl_mvm *mvm, | |
749 | struct napi_struct *napi, int queue, | |
750 | const struct iwl_mvm_nssn_sync_data *data) | |
751 | { | |
752 | iwl_mvm_release_frames_from_notif(mvm, napi, data->baid, | |
ecd09ddc EG |
753 | data->nssn, queue, |
754 | IWL_MVM_RELEASE_FROM_RSS_SYNC); | |
c61b655a EG |
755 | } |
756 | ||
757 | void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi, | |
758 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
94bb4481 SS |
759 | { |
760 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
761 | struct iwl_rxq_sync_notification *notif; | |
762 | struct iwl_mvm_internal_rxq_notif *internal_notif; | |
763 | ||
764 | notif = (void *)pkt->data; | |
765 | internal_notif = (void *)notif->payload; | |
766 | ||
42116705 JB |
767 | if (internal_notif->sync && |
768 | mvm->queue_sync_cookie != internal_notif->cookie) { | |
769 | WARN_ONCE(1, "Received expired RX queue sync message\n"); | |
770 | return; | |
d0ff5d22 SS |
771 | } |
772 | ||
773 | switch (internal_notif->type) { | |
774 | case IWL_MVM_RXQ_EMPTY: | |
0636b938 | 775 | break; |
94bb4481 | 776 | case IWL_MVM_RXQ_NOTIF_DEL_BA: |
b915c101 | 777 | iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data); |
94bb4481 | 778 | break; |
c61b655a EG |
779 | case IWL_MVM_RXQ_NSSN_SYNC: |
780 | iwl_mvm_nssn_sync(mvm, napi, queue, | |
781 | (void *)internal_notif->data); | |
782 | break; | |
94bb4481 SS |
783 | default: |
784 | WARN_ONCE(1, "Invalid identifier %d", internal_notif->type); | |
785 | } | |
42116705 JB |
786 | |
787 | if (internal_notif->sync && | |
788 | !atomic_dec_return(&mvm->queue_sync_counter)) | |
789 | wake_up(&mvm->rx_sync_waitq); | |
94bb4481 SS |
790 | } |
791 | ||
0968fbfa JB |
792 | static void iwl_mvm_oldsn_workaround(struct iwl_mvm *mvm, |
793 | struct ieee80211_sta *sta, int tid, | |
794 | struct iwl_mvm_reorder_buffer *buffer, | |
795 | u32 reorder, u32 gp2, int queue) | |
796 | { | |
797 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
798 | ||
799 | if (gp2 != buffer->consec_oldsn_ampdu_gp2) { | |
800 | /* we have a new (A-)MPDU ... */ | |
801 | ||
802 | /* | |
803 | * reset counter to 0 if we didn't have any oldsn in | |
804 | * the last A-MPDU (as detected by GP2 being identical) | |
805 | */ | |
806 | if (!buffer->consec_oldsn_prev_drop) | |
807 | buffer->consec_oldsn_drops = 0; | |
808 | ||
809 | /* either way, update our tracking state */ | |
810 | buffer->consec_oldsn_ampdu_gp2 = gp2; | |
811 | } else if (buffer->consec_oldsn_prev_drop) { | |
812 | /* | |
813 | * tracking state didn't change, and we had an old SN | |
814 | * indication before - do nothing in this case, we | |
815 | * already noted this one down and are waiting for the | |
816 | * next A-MPDU (by GP2) | |
817 | */ | |
818 | return; | |
819 | } | |
820 | ||
821 | /* return unless this MPDU has old SN */ | |
822 | if (!(reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)) | |
823 | return; | |
824 | ||
825 | /* update state */ | |
826 | buffer->consec_oldsn_prev_drop = 1; | |
827 | buffer->consec_oldsn_drops++; | |
828 | ||
829 | /* if limit is reached, send del BA and reset state */ | |
830 | if (buffer->consec_oldsn_drops == IWL_MVM_AMPDU_CONSEC_DROPS_DELBA) { | |
831 | IWL_WARN(mvm, | |
832 | "reached %d old SN frames from %pM on queue %d, stopping BA session on TID %d\n", | |
833 | IWL_MVM_AMPDU_CONSEC_DROPS_DELBA, | |
834 | sta->addr, queue, tid); | |
835 | ieee80211_stop_rx_ba_session(mvmsta->vif, BIT(tid), sta->addr); | |
836 | buffer->consec_oldsn_prev_drop = 0; | |
837 | buffer->consec_oldsn_drops = 0; | |
838 | } | |
839 | } | |
840 | ||
b915c101 SS |
841 | /* |
842 | * Returns true if the MPDU was buffered\dropped, false if it should be passed | |
843 | * to upper layer. | |
844 | */ | |
845 | static bool iwl_mvm_reorder(struct iwl_mvm *mvm, | |
846 | struct napi_struct *napi, | |
847 | int queue, | |
848 | struct ieee80211_sta *sta, | |
849 | struct sk_buff *skb, | |
850 | struct iwl_rx_mpdu_desc *desc) | |
851 | { | |
0968fbfa | 852 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); |
3619b088 | 853 | struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb); |
1f9788f3 | 854 | struct iwl_mvm_sta *mvm_sta; |
b915c101 SS |
855 | struct iwl_mvm_baid_data *baid_data; |
856 | struct iwl_mvm_reorder_buffer *buffer; | |
857 | struct sk_buff *tail; | |
858 | u32 reorder = le32_to_cpu(desc->reorder_data); | |
859 | bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU; | |
e7e14089 SS |
860 | bool last_subframe = |
861 | desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME; | |
8f66e064 | 862 | u8 tid = ieee80211_get_tid(hdr); |
b915c101 SS |
863 | u8 sub_frame_idx = desc->amsdu_info & |
864 | IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; | |
dfdddd92 | 865 | struct iwl_mvm_reorder_buf_entry *entries; |
b915c101 SS |
866 | int index; |
867 | u16 nssn, sn; | |
868 | u8 baid; | |
869 | ||
870 | baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >> | |
871 | IWL_RX_MPDU_REORDER_BAID_SHIFT; | |
872 | ||
8ec8ed43 JB |
873 | /* |
874 | * This also covers the case of receiving a Block Ack Request | |
875 | * outside a BA session; we'll pass it to mac80211 and that | |
876 | * then sends a delBA action frame. | |
81444538 JB |
877 | * This also covers pure monitor mode, in which case we won't |
878 | * have any BA sessions. | |
8ec8ed43 | 879 | */ |
b915c101 SS |
880 | if (baid == IWL_RX_REORDER_DATA_INVALID_BAID) |
881 | return false; | |
882 | ||
883 | /* no sta yet */ | |
417795a3 SS |
884 | if (WARN_ONCE(IS_ERR_OR_NULL(sta), |
885 | "Got valid BAID without a valid station assigned\n")) | |
b915c101 SS |
886 | return false; |
887 | ||
1f9788f3 LC |
888 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
889 | ||
9a73a7d2 SS |
890 | /* not a data packet or a bar */ |
891 | if (!ieee80211_is_back_req(hdr->frame_control) && | |
892 | (!ieee80211_is_data_qos(hdr->frame_control) || | |
893 | is_multicast_ether_addr(hdr->addr1))) | |
b915c101 SS |
894 | return false; |
895 | ||
896 | if (unlikely(!ieee80211_is_data_present(hdr->frame_control))) | |
897 | return false; | |
898 | ||
899 | baid_data = rcu_dereference(mvm->baid_map[baid]); | |
5d43eab6 | 900 | if (!baid_data) { |
a600852a EG |
901 | IWL_DEBUG_RX(mvm, |
902 | "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n", | |
903 | baid, reorder); | |
b915c101 | 904 | return false; |
5d43eab6 SS |
905 | } |
906 | ||
b915c101 SS |
907 | if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id, |
908 | "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n", | |
909 | baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id, | |
910 | tid)) | |
911 | return false; | |
912 | ||
913 | nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK; | |
914 | sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >> | |
915 | IWL_RX_MPDU_REORDER_SN_SHIFT; | |
916 | ||
917 | buffer = &baid_data->reorder_buf[queue]; | |
dfdddd92 | 918 | entries = &baid_data->entries[queue * baid_data->entries_per_queue]; |
b915c101 | 919 | |
0690405f SS |
920 | spin_lock_bh(&buffer->lock); |
921 | ||
5d43eab6 SS |
922 | if (!buffer->valid) { |
923 | if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) { | |
924 | spin_unlock_bh(&buffer->lock); | |
925 | return false; | |
926 | } | |
927 | buffer->valid = true; | |
928 | } | |
929 | ||
9a73a7d2 | 930 | if (ieee80211_is_back_req(hdr->frame_control)) { |
3c514bf8 | 931 | iwl_mvm_release_frames(mvm, sta, napi, baid_data, |
ecd09ddc | 932 | buffer, nssn, 0); |
9a73a7d2 SS |
933 | goto drop; |
934 | } | |
935 | ||
b915c101 SS |
936 | /* |
937 | * If there was a significant jump in the nssn - adjust. | |
938 | * If the SN is smaller than the NSSN it might need to first go into | |
939 | * the reorder buffer, in which case we just release up to it and the | |
5f90472c | 940 | * rest of the function will take care of storing it and releasing up to |
3c514bf8 EG |
941 | * the nssn. |
942 | * This should not happen. This queue has been lagging and it should | |
943 | * have been updated by a IWL_MVM_RXQ_NSSN_SYNC notification. Be nice | |
944 | * and update the other queues. | |
b915c101 | 945 | */ |
74dd1764 | 946 | if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size, |
5f90472c SS |
947 | buffer->buf_size) || |
948 | !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) { | |
b915c101 SS |
949 | u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn; |
950 | ||
76f4a85e | 951 | iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, |
ecd09ddc | 952 | min_sn, IWL_MVM_RELEASE_SEND_RSS_SYNC); |
b915c101 SS |
953 | } |
954 | ||
0968fbfa JB |
955 | iwl_mvm_oldsn_workaround(mvm, sta, tid, buffer, reorder, |
956 | rx_status->device_timestamp, queue); | |
957 | ||
b915c101 SS |
958 | /* drop any oudated packets */ |
959 | if (ieee80211_sn_less(sn, buffer->head_sn)) | |
960 | goto drop; | |
961 | ||
962 | /* release immediately if allowed by nssn and no stored frames */ | |
963 | if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) { | |
74dd1764 | 964 | if (iwl_mvm_is_sn_less(buffer->head_sn, nssn, |
e7e14089 | 965 | buffer->buf_size) && |
3c514bf8 EG |
966 | (!amsdu || last_subframe)) { |
967 | /* | |
968 | * If we crossed the 2048 or 0 SN, notify all the | |
969 | * queues. This is done in order to avoid having a | |
970 | * head_sn that lags behind for too long. When that | |
971 | * happens, we can get to a situation where the head_sn | |
972 | * is within the interval [nssn - buf_size : nssn] | |
973 | * which will make us think that the nssn is a packet | |
974 | * that we already freed because of the reordering | |
975 | * buffer and we will ignore it. So maintain the | |
976 | * head_sn somewhat updated across all the queues: | |
977 | * when it crosses 0 and 2048. | |
978 | */ | |
979 | if (sn == 2048 || sn == 0) | |
980 | iwl_mvm_sync_nssn(mvm, baid, sn); | |
0690405f | 981 | buffer->head_sn = nssn; |
3c514bf8 | 982 | } |
b915c101 | 983 | /* No need to update AMSDU last SN - we are moving the head */ |
0690405f | 984 | spin_unlock_bh(&buffer->lock); |
b915c101 SS |
985 | return false; |
986 | } | |
987 | ||
14a1f85b SS |
988 | /* |
989 | * release immediately if there are no stored frames, and the sn is | |
990 | * equal to the head. | |
991 | * This can happen due to reorder timer, where NSSN is behind head_sn. | |
992 | * When we released everything, and we got the next frame in the | |
993 | * sequence, according to the NSSN we can't release immediately, | |
994 | * while technically there is no hole and we can move forward. | |
995 | */ | |
996 | if (!buffer->num_stored && sn == buffer->head_sn) { | |
3c514bf8 EG |
997 | if (!amsdu || last_subframe) { |
998 | if (sn == 2048 || sn == 0) | |
999 | iwl_mvm_sync_nssn(mvm, baid, sn); | |
14a1f85b | 1000 | buffer->head_sn = ieee80211_sn_inc(buffer->head_sn); |
3c514bf8 | 1001 | } |
14a1f85b SS |
1002 | /* No need to update AMSDU last SN - we are moving the head */ |
1003 | spin_unlock_bh(&buffer->lock); | |
1004 | return false; | |
1005 | } | |
1006 | ||
b915c101 SS |
1007 | index = sn % buffer->buf_size; |
1008 | ||
1009 | /* | |
1010 | * Check if we already stored this frame | |
1011 | * As AMSDU is either received or not as whole, logic is simple: | |
1012 | * If we have frames in that position in the buffer and the last frame | |
1013 | * originated from AMSDU had a different SN then it is a retransmission. | |
1014 | * If it is the same SN then if the subframe index is incrementing it | |
1015 | * is the same AMSDU - otherwise it is a retransmission. | |
1016 | */ | |
dfdddd92 | 1017 | tail = skb_peek_tail(&entries[index].e.frames); |
b915c101 SS |
1018 | if (tail && !amsdu) |
1019 | goto drop; | |
1020 | else if (tail && (sn != buffer->last_amsdu || | |
1021 | buffer->last_sub_index >= sub_frame_idx)) | |
1022 | goto drop; | |
1023 | ||
1024 | /* put in reorder buffer */ | |
dfdddd92 | 1025 | __skb_queue_tail(&entries[index].e.frames, skb); |
b915c101 | 1026 | buffer->num_stored++; |
dfdddd92 | 1027 | entries[index].e.reorder_time = jiffies; |
0690405f | 1028 | |
b915c101 SS |
1029 | if (amsdu) { |
1030 | buffer->last_amsdu = sn; | |
1031 | buffer->last_sub_index = sub_frame_idx; | |
1032 | } | |
1033 | ||
e7e14089 SS |
1034 | /* |
1035 | * We cannot trust NSSN for AMSDU sub-frames that are not the last. | |
1036 | * The reason is that NSSN advances on the first sub-frame, and may | |
1037 | * cause the reorder buffer to advance before all the sub-frames arrive. | |
1038 | * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with | |
1039 | * SN 1. NSSN for first sub frame will be 3 with the result of driver | |
1040 | * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is | |
1041 | * already ahead and it will be dropped. | |
1042 | * If the last sub-frame is not on this queue - we will get frame | |
1043 | * release notification with up to date NSSN. | |
1044 | */ | |
1045 | if (!amsdu || last_subframe) | |
3c514bf8 | 1046 | iwl_mvm_release_frames(mvm, sta, napi, baid_data, |
ecd09ddc EG |
1047 | buffer, nssn, |
1048 | IWL_MVM_RELEASE_SEND_RSS_SYNC); | |
e7e14089 | 1049 | |
0690405f | 1050 | spin_unlock_bh(&buffer->lock); |
b915c101 SS |
1051 | return true; |
1052 | ||
1053 | drop: | |
1054 | kfree_skb(skb); | |
0690405f | 1055 | spin_unlock_bh(&buffer->lock); |
b915c101 SS |
1056 | return true; |
1057 | } | |
1058 | ||
5d43eab6 SS |
1059 | static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm, |
1060 | u32 reorder_data, u8 baid) | |
10b2b201 SS |
1061 | { |
1062 | unsigned long now = jiffies; | |
1063 | unsigned long timeout; | |
1064 | struct iwl_mvm_baid_data *data; | |
1065 | ||
1066 | rcu_read_lock(); | |
1067 | ||
1068 | data = rcu_dereference(mvm->baid_map[baid]); | |
5d43eab6 | 1069 | if (!data) { |
a600852a EG |
1070 | IWL_DEBUG_RX(mvm, |
1071 | "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n", | |
1072 | baid, reorder_data); | |
10b2b201 | 1073 | goto out; |
5d43eab6 | 1074 | } |
10b2b201 SS |
1075 | |
1076 | if (!data->timeout) | |
1077 | goto out; | |
1078 | ||
1079 | timeout = data->timeout; | |
1080 | /* | |
1081 | * Do not update last rx all the time to avoid cache bouncing | |
1082 | * between the rx queues. | |
1083 | * Update it every timeout. Worst case is the session will | |
1084 | * expire after ~ 2 * timeout, which doesn't matter that much. | |
1085 | */ | |
1086 | if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now)) | |
1087 | /* Update is atomic */ | |
1088 | data->last_rx = now; | |
1089 | ||
1090 | out: | |
1091 | rcu_read_unlock(); | |
1092 | } | |
1093 | ||
e4d72208 SS |
1094 | static void iwl_mvm_flip_address(u8 *addr) |
1095 | { | |
1096 | int i; | |
1097 | u8 mac_addr[ETH_ALEN]; | |
1098 | ||
1099 | for (i = 0; i < ETH_ALEN; i++) | |
1100 | mac_addr[i] = addr[ETH_ALEN - i - 1]; | |
1101 | ether_addr_copy(addr, mac_addr); | |
1102 | } | |
1103 | ||
bdf180c8 | 1104 | struct iwl_mvm_rx_phy_data { |
6721039d | 1105 | enum iwl_rx_phy_info_type info_type; |
bdf180c8 ST |
1106 | __le32 d0, d1, d2, d3; |
1107 | __le16 d4; | |
1108 | }; | |
1109 | ||
1110 | static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm, | |
1111 | struct iwl_mvm_rx_phy_data *phy_data, | |
1112 | u32 rate_n_flags, | |
1113 | struct ieee80211_radiotap_he_mu *he_mu) | |
dabf9844 | 1114 | { |
bdf180c8 ST |
1115 | u32 phy_data2 = le32_to_cpu(phy_data->d2); |
1116 | u32 phy_data3 = le32_to_cpu(phy_data->d3); | |
1117 | u16 phy_data4 = le16_to_cpu(phy_data->d4); | |
dabf9844 | 1118 | |
bdf180c8 | 1119 | if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) { |
dabf9844 JB |
1120 | he_mu->flags1 |= |
1121 | cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN | | |
1122 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN); | |
1123 | ||
1124 | he_mu->flags1 |= | |
bdf180c8 ST |
1125 | le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU, |
1126 | phy_data4), | |
dabf9844 JB |
1127 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU); |
1128 | ||
bdf180c8 ST |
1129 | he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0, |
1130 | phy_data2); | |
1131 | he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1, | |
1132 | phy_data3); | |
1133 | he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2, | |
1134 | phy_data2); | |
1135 | he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3, | |
1136 | phy_data3); | |
dabf9844 JB |
1137 | } |
1138 | ||
bdf180c8 | 1139 | if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) && |
317bc55f | 1140 | (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) != RATE_MCS_CHAN_WIDTH_20) { |
dabf9844 JB |
1141 | he_mu->flags1 |= |
1142 | cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN | | |
1143 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN); | |
1144 | ||
1145 | he_mu->flags2 |= | |
bdf180c8 ST |
1146 | le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU, |
1147 | phy_data4), | |
dabf9844 JB |
1148 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU); |
1149 | ||
bdf180c8 ST |
1150 | he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0, |
1151 | phy_data2); | |
1152 | he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1, | |
1153 | phy_data3); | |
1154 | he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2, | |
1155 | phy_data2); | |
1156 | he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3, | |
1157 | phy_data3); | |
dabf9844 JB |
1158 | } |
1159 | } | |
1160 | ||
ffe9d734 | 1161 | static void |
bdf180c8 ST |
1162 | iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data, |
1163 | u32 rate_n_flags, | |
ffe9d734 JB |
1164 | struct ieee80211_radiotap_he *he, |
1165 | struct ieee80211_radiotap_he_mu *he_mu, | |
1166 | struct ieee80211_rx_status *rx_status) | |
1167 | { | |
1168 | /* | |
1169 | * Unfortunately, we have to leave the mac80211 data | |
1170 | * incorrect for the case that we receive an HE-MU | |
1171 | * transmission and *don't* have the HE phy data (due | |
1172 | * to the bits being used for TSF). This shouldn't | |
1173 | * happen though as management frames where we need | |
1174 | * the TSF/timers are not be transmitted in HE-MU. | |
1175 | */ | |
bdf180c8 | 1176 | u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK); |
74cf15cb | 1177 | u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; |
ffe9d734 JB |
1178 | u8 offs = 0; |
1179 | ||
1180 | rx_status->bw = RATE_INFO_BW_HE_RU; | |
1181 | ||
1182 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); | |
1183 | ||
1184 | switch (ru) { | |
1185 | case 0 ... 36: | |
1186 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26; | |
1187 | offs = ru; | |
1188 | break; | |
1189 | case 37 ... 52: | |
1190 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52; | |
1191 | offs = ru - 37; | |
1192 | break; | |
1193 | case 53 ... 60: | |
1194 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; | |
1195 | offs = ru - 53; | |
1196 | break; | |
1197 | case 61 ... 64: | |
1198 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242; | |
1199 | offs = ru - 61; | |
1200 | break; | |
1201 | case 65 ... 66: | |
1202 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484; | |
1203 | offs = ru - 65; | |
1204 | break; | |
1205 | case 67: | |
1206 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996; | |
1207 | break; | |
1208 | case 68: | |
1209 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996; | |
1210 | break; | |
1211 | } | |
1212 | he->data2 |= le16_encode_bits(offs, | |
1213 | IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET); | |
1214 | he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN | | |
1215 | IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN); | |
bdf180c8 | 1216 | if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80)) |
ffe9d734 JB |
1217 | he->data2 |= |
1218 | cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC); | |
1219 | ||
ffe9d734 JB |
1220 | #define CHECK_BW(bw) \ |
1221 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \ | |
74cf15cb JB |
1222 | RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \ |
1223 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \ | |
ffe9d734 | 1224 | RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS) |
74cf15cb JB |
1225 | CHECK_BW(20); |
1226 | CHECK_BW(40); | |
1227 | CHECK_BW(80); | |
1228 | CHECK_BW(160); | |
1229 | ||
1230 | if (he_mu) | |
ffe9d734 JB |
1231 | he_mu->flags2 |= |
1232 | le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, | |
1233 | rate_n_flags), | |
1234 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW); | |
74cf15cb JB |
1235 | else if (he_type == RATE_MCS_HE_TYPE_TRIG) |
1236 | he->data6 |= | |
1237 | cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) | | |
1238 | le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, | |
1239 | rate_n_flags), | |
1240 | IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW); | |
ffe9d734 JB |
1241 | } |
1242 | ||
59b8cf0c | 1243 | static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm, |
bdf180c8 | 1244 | struct iwl_mvm_rx_phy_data *phy_data, |
59b8cf0c JB |
1245 | struct ieee80211_radiotap_he *he, |
1246 | struct ieee80211_radiotap_he_mu *he_mu, | |
ffe9d734 | 1247 | struct ieee80211_rx_status *rx_status, |
bdf180c8 | 1248 | u32 rate_n_flags, int queue) |
59b8cf0c | 1249 | { |
6721039d | 1250 | switch (phy_data->info_type) { |
bdf180c8 ST |
1251 | case IWL_RX_PHY_INFO_TYPE_NONE: |
1252 | case IWL_RX_PHY_INFO_TYPE_CCK: | |
1253 | case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY: | |
bdf180c8 ST |
1254 | case IWL_RX_PHY_INFO_TYPE_HT: |
1255 | case IWL_RX_PHY_INFO_TYPE_VHT_SU: | |
1256 | case IWL_RX_PHY_INFO_TYPE_VHT_MU: | |
bdf180c8 ST |
1257 | return; |
1258 | case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: | |
1259 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN | | |
1260 | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN | | |
1261 | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN | | |
1262 | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN); | |
a197e6d1 | 1263 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1264 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1), |
1265 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1); | |
a197e6d1 | 1266 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1267 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2), |
1268 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2); | |
a197e6d1 | 1269 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1270 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3), |
1271 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3); | |
a197e6d1 | 1272 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1273 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4), |
1274 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4); | |
1275 | /* fall through */ | |
1276 | case IWL_RX_PHY_INFO_TYPE_HE_SU: | |
1277 | case IWL_RX_PHY_INFO_TYPE_HE_MU: | |
1278 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: | |
1279 | case IWL_RX_PHY_INFO_TYPE_HE_TB: | |
1280 | /* HE common */ | |
1281 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN | | |
bdf180c8 ST |
1282 | IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN | |
1283 | IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN); | |
1284 | he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN | | |
1285 | IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN | | |
1286 | IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN | | |
1287 | IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN); | |
1288 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1289 | IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK), | |
1290 | IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR); | |
7969454b ST |
1291 | if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB && |
1292 | phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) { | |
1293 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN); | |
1294 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
bdf180c8 | 1295 | IWL_RX_PHY_DATA0_HE_UPLINK), |
7969454b ST |
1296 | IEEE80211_RADIOTAP_HE_DATA3_UL_DL); |
1297 | } | |
bdf180c8 ST |
1298 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, |
1299 | IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM), | |
1300 | IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG); | |
bdf180c8 ST |
1301 | he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0, |
1302 | IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK), | |
1303 | IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD); | |
1304 | he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1305 | IWL_RX_PHY_DATA0_HE_PE_DISAMBIG), | |
1306 | IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG); | |
1307 | he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1, | |
1308 | IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK), | |
1309 | IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS); | |
1310 | he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1311 | IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK), | |
1312 | IEEE80211_RADIOTAP_HE_DATA6_TXOP); | |
1313 | he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1314 | IWL_RX_PHY_DATA0_HE_DOPPLER), | |
1315 | IEEE80211_RADIOTAP_HE_DATA6_DOPPLER); | |
1316 | break; | |
1317 | } | |
1318 | ||
2286a99c JB |
1319 | switch (phy_data->info_type) { |
1320 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: | |
1321 | case IWL_RX_PHY_INFO_TYPE_HE_MU: | |
1322 | case IWL_RX_PHY_INFO_TYPE_HE_SU: | |
1323 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN); | |
1324 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1325 | IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK), | |
1326 | IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE); | |
1327 | break; | |
1328 | default: | |
1329 | /* nothing here */ | |
1330 | break; | |
1331 | } | |
1332 | ||
6721039d | 1333 | switch (phy_data->info_type) { |
bdf180c8 | 1334 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: |
59b8cf0c | 1335 | he_mu->flags1 |= |
bdf180c8 ST |
1336 | le16_encode_bits(le16_get_bits(phy_data->d4, |
1337 | IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM), | |
59b8cf0c JB |
1338 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM); |
1339 | he_mu->flags1 |= | |
bdf180c8 ST |
1340 | le16_encode_bits(le16_get_bits(phy_data->d4, |
1341 | IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK), | |
59b8cf0c JB |
1342 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS); |
1343 | he_mu->flags2 |= | |
bdf180c8 ST |
1344 | le16_encode_bits(le16_get_bits(phy_data->d4, |
1345 | IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK), | |
1346 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW); | |
1347 | iwl_mvm_decode_he_mu_ext(mvm, phy_data, rate_n_flags, he_mu); | |
1348 | /* fall through */ | |
1349 | case IWL_RX_PHY_INFO_TYPE_HE_MU: | |
59b8cf0c | 1350 | he_mu->flags2 |= |
bdf180c8 ST |
1351 | le16_encode_bits(le32_get_bits(phy_data->d1, |
1352 | IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK), | |
1353 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS); | |
59b8cf0c | 1354 | he_mu->flags2 |= |
bdf180c8 ST |
1355 | le16_encode_bits(le32_get_bits(phy_data->d1, |
1356 | IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION), | |
1357 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP); | |
69f3ca8e | 1358 | /* fall through */ |
bdf180c8 ST |
1359 | case IWL_RX_PHY_INFO_TYPE_HE_TB: |
1360 | case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: | |
1361 | iwl_mvm_decode_he_phy_ru_alloc(phy_data, rate_n_flags, | |
ffe9d734 JB |
1362 | he, he_mu, rx_status); |
1363 | break; | |
bdf180c8 ST |
1364 | case IWL_RX_PHY_INFO_TYPE_HE_SU: |
1365 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN); | |
1366 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1367 | IWL_RX_PHY_DATA0_HE_BEAM_CHNG), | |
1368 | IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE); | |
1369 | break; | |
ffe9d734 JB |
1370 | default: |
1371 | /* nothing */ | |
1372 | break; | |
1373 | } | |
59b8cf0c JB |
1374 | } |
1375 | ||
c630b477 | 1376 | static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb, |
6721039d | 1377 | struct iwl_mvm_rx_phy_data *phy_data, |
c630b477 SS |
1378 | u32 rate_n_flags, u16 phy_info, int queue) |
1379 | { | |
1380 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
c630b477 SS |
1381 | struct ieee80211_radiotap_he *he = NULL; |
1382 | struct ieee80211_radiotap_he_mu *he_mu = NULL; | |
f9fe5793 | 1383 | u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; |
de8da230 | 1384 | u8 stbc, ltf; |
c630b477 SS |
1385 | static const struct ieee80211_radiotap_he known = { |
1386 | .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN | | |
1387 | IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN | | |
1388 | IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN | | |
1389 | IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN), | |
1390 | .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN | | |
1391 | IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN), | |
1392 | }; | |
1393 | static const struct ieee80211_radiotap_he_mu mu_known = { | |
1394 | .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN | | |
1395 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN | | |
1396 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN | | |
1397 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN), | |
dabf9844 JB |
1398 | .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN | |
1399 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN), | |
c630b477 | 1400 | }; |
c630b477 SS |
1401 | |
1402 | he = skb_put_data(skb, &known, sizeof(known)); | |
c630b477 SS |
1403 | rx_status->flag |= RX_FLAG_RADIOTAP_HE; |
1404 | ||
6721039d ST |
1405 | if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU || |
1406 | phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) { | |
bdf180c8 | 1407 | he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known)); |
bdf180c8 | 1408 | rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU; |
c630b477 SS |
1409 | } |
1410 | ||
937c2652 ST |
1411 | /* report the AMPDU-EOF bit on single frames */ |
1412 | if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) { | |
1413 | rx_status->flag |= RX_FLAG_AMPDU_DETAILS; | |
1414 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; | |
1415 | if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF)) | |
1416 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; | |
c630b477 SS |
1417 | } |
1418 | ||
bdf180c8 | 1419 | if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) |
6721039d | 1420 | iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status, |
bdf180c8 | 1421 | rate_n_flags, queue); |
59b8cf0c | 1422 | |
c630b477 | 1423 | /* update aggregation data for monitor sake on default queue */ |
bdf180c8 ST |
1424 | if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) && |
1425 | (phy_info & IWL_RX_MPDU_PHY_AMPDU)) { | |
c630b477 SS |
1426 | bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE; |
1427 | ||
1428 | /* toggle is switched whenever new aggregation starts */ | |
937c2652 | 1429 | if (toggle_bit != mvm->ampdu_toggle) { |
c630b477 | 1430 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; |
6721039d | 1431 | if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF)) |
c630b477 SS |
1432 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; |
1433 | } | |
1434 | } | |
1435 | ||
1436 | if (he_type == RATE_MCS_HE_TYPE_EXT_SU && | |
1437 | rate_n_flags & RATE_MCS_HE_106T_MSK) { | |
1438 | rx_status->bw = RATE_INFO_BW_HE_RU; | |
1439 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; | |
1440 | } | |
dabf9844 | 1441 | |
ffe9d734 JB |
1442 | /* actually data is filled in mac80211 */ |
1443 | if (he_type == RATE_MCS_HE_TYPE_SU || | |
1444 | he_type == RATE_MCS_HE_TYPE_EXT_SU) | |
dabf9844 JB |
1445 | he->data1 |= |
1446 | cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); | |
1447 | ||
c630b477 SS |
1448 | stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS; |
1449 | rx_status->nss = | |
1450 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> | |
1451 | RATE_VHT_MCS_NSS_POS) + 1; | |
1452 | rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; | |
1453 | rx_status->encoding = RX_ENC_HE; | |
1454 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; | |
1455 | if (rate_n_flags & RATE_MCS_BF_MSK) | |
1456 | rx_status->enc_flags |= RX_ENC_FLAG_BF; | |
1457 | ||
1458 | rx_status->he_dcm = | |
1459 | !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK); | |
1460 | ||
1461 | #define CHECK_TYPE(F) \ | |
1462 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \ | |
1463 | (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS)) | |
1464 | ||
1465 | CHECK_TYPE(SU); | |
1466 | CHECK_TYPE(EXT_SU); | |
1467 | CHECK_TYPE(MU); | |
1468 | CHECK_TYPE(TRIG); | |
1469 | ||
1470 | he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS); | |
1471 | ||
caf3216f | 1472 | if (rate_n_flags & RATE_MCS_BF_MSK) |
c630b477 SS |
1473 | he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF); |
1474 | ||
1475 | switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >> | |
1476 | RATE_MCS_HE_GI_LTF_POS) { | |
1477 | case 0: | |
93cc712a JB |
1478 | if (he_type == RATE_MCS_HE_TYPE_TRIG) |
1479 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; | |
1480 | else | |
1481 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; | |
de8da230 JB |
1482 | if (he_type == RATE_MCS_HE_TYPE_MU) |
1483 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; | |
1484 | else | |
1485 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X; | |
c630b477 SS |
1486 | break; |
1487 | case 1: | |
93cc712a JB |
1488 | if (he_type == RATE_MCS_HE_TYPE_TRIG) |
1489 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; | |
1490 | else | |
1491 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; | |
de8da230 | 1492 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; |
c630b477 SS |
1493 | break; |
1494 | case 2: | |
93cc712a JB |
1495 | if (he_type == RATE_MCS_HE_TYPE_TRIG) { |
1496 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2; | |
de8da230 | 1497 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; |
93cc712a JB |
1498 | } else { |
1499 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; | |
de8da230 | 1500 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; |
93cc712a | 1501 | } |
c630b477 SS |
1502 | break; |
1503 | case 3: | |
93cc712a JB |
1504 | if ((he_type == RATE_MCS_HE_TYPE_SU || |
1505 | he_type == RATE_MCS_HE_TYPE_EXT_SU) && | |
1506 | rate_n_flags & RATE_MCS_SGI_MSK) | |
c630b477 SS |
1507 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; |
1508 | else | |
1509 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2; | |
de8da230 | 1510 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; |
c630b477 SS |
1511 | break; |
1512 | } | |
1513 | ||
bdf180c8 ST |
1514 | he->data5 |= le16_encode_bits(ltf, |
1515 | IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE); | |
c630b477 SS |
1516 | } |
1517 | ||
6721039d ST |
1518 | static void iwl_mvm_decode_lsig(struct sk_buff *skb, |
1519 | struct iwl_mvm_rx_phy_data *phy_data) | |
1520 | { | |
1521 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
1522 | struct ieee80211_radiotap_lsig *lsig; | |
1523 | ||
1524 | switch (phy_data->info_type) { | |
1525 | case IWL_RX_PHY_INFO_TYPE_HT: | |
1526 | case IWL_RX_PHY_INFO_TYPE_VHT_SU: | |
1527 | case IWL_RX_PHY_INFO_TYPE_VHT_MU: | |
1528 | case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: | |
1529 | case IWL_RX_PHY_INFO_TYPE_HE_SU: | |
1530 | case IWL_RX_PHY_INFO_TYPE_HE_MU: | |
1531 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: | |
1532 | case IWL_RX_PHY_INFO_TYPE_HE_TB: | |
1533 | lsig = skb_put(skb, sizeof(*lsig)); | |
1534 | lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN); | |
1535 | lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1, | |
1536 | IWL_RX_PHY_DATA1_LSIG_LEN_MASK), | |
1537 | IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH); | |
1538 | rx_status->flag |= RX_FLAG_RADIOTAP_LSIG; | |
1539 | break; | |
1540 | default: | |
1541 | break; | |
1542 | } | |
1543 | } | |
1544 | ||
65b9425c TM |
1545 | static inline u8 iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band) |
1546 | { | |
1547 | switch (phy_band) { | |
1548 | case PHY_BAND_24: | |
1549 | return NL80211_BAND_2GHZ; | |
1550 | case PHY_BAND_5: | |
1551 | return NL80211_BAND_5GHZ; | |
1552 | default: | |
1553 | WARN_ONCE(1, "Unsupported phy band (%u)\n", phy_band); | |
1554 | return NL80211_BAND_5GHZ; | |
1555 | } | |
1556 | } | |
1557 | ||
780e87c2 JB |
1558 | void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi, |
1559 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
1560 | { | |
1561 | struct ieee80211_rx_status *rx_status; | |
1562 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1563 | struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; | |
18ead597 | 1564 | struct ieee80211_hdr *hdr; |
780e87c2 | 1565 | u32 len = le16_to_cpu(desc->mpdu_len); |
18ead597 | 1566 | u32 rate_n_flags, gp2_on_air_rise; |
fbe41127 | 1567 | u16 phy_info = le16_to_cpu(desc->phy_info); |
780e87c2 JB |
1568 | struct ieee80211_sta *sta = NULL; |
1569 | struct sk_buff *skb; | |
18ead597 | 1570 | u8 crypt_len = 0, channel, energy_a, energy_b; |
18ead597 | 1571 | size_t desc_size; |
6721039d ST |
1572 | struct iwl_mvm_rx_phy_data phy_data = { |
1573 | .d4 = desc->phy_data4, | |
1574 | .info_type = IWL_RX_PHY_INFO_TYPE_NONE, | |
1575 | }; | |
9bf13bee | 1576 | bool csi = false; |
780e87c2 | 1577 | |
364a1ab9 SM |
1578 | if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) |
1579 | return; | |
1580 | ||
3681021f | 1581 | if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { |
18ead597 GBA |
1582 | rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags); |
1583 | channel = desc->v3.channel; | |
1584 | gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise); | |
1585 | energy_a = desc->v3.energy_a; | |
1586 | energy_b = desc->v3.energy_b; | |
1587 | desc_size = sizeof(*desc); | |
6721039d ST |
1588 | |
1589 | phy_data.d0 = desc->v3.phy_data0; | |
1590 | phy_data.d1 = desc->v3.phy_data1; | |
1591 | phy_data.d2 = desc->v3.phy_data2; | |
1592 | phy_data.d3 = desc->v3.phy_data3; | |
18ead597 GBA |
1593 | } else { |
1594 | rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags); | |
1595 | channel = desc->v1.channel; | |
1596 | gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise); | |
1597 | energy_a = desc->v1.energy_a; | |
1598 | energy_b = desc->v1.energy_b; | |
1599 | desc_size = IWL_RX_DESC_SIZE_V1; | |
6721039d ST |
1600 | |
1601 | phy_data.d0 = desc->v1.phy_data0; | |
1602 | phy_data.d1 = desc->v1.phy_data1; | |
1603 | phy_data.d2 = desc->v1.phy_data2; | |
1604 | phy_data.d3 = desc->v1.phy_data3; | |
18ead597 GBA |
1605 | } |
1606 | ||
6721039d ST |
1607 | if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) |
1608 | phy_data.info_type = | |
1609 | le32_get_bits(phy_data.d1, | |
1610 | IWL_RX_PHY_DATA1_INFO_TYPE_MASK); | |
1611 | ||
18ead597 | 1612 | hdr = (void *)(pkt->data + desc_size); |
780e87c2 JB |
1613 | /* Dont use dev_alloc_skb(), we'll have enough headroom once |
1614 | * ieee80211_hdr pulled. | |
1615 | */ | |
1616 | skb = alloc_skb(128, GFP_ATOMIC); | |
1617 | if (!skb) { | |
1618 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
1619 | return; | |
1620 | } | |
1621 | ||
1e5b7750 JB |
1622 | if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) { |
1623 | /* | |
1624 | * If the device inserted padding it means that (it thought) | |
1625 | * the 802.11 header wasn't a multiple of 4 bytes long. In | |
1626 | * this case, reserve two bytes at the start of the SKB to | |
1627 | * align the payload properly in case we end up copying it. | |
1628 | */ | |
1629 | skb_reserve(skb, 2); | |
1630 | } | |
1631 | ||
780e87c2 JB |
1632 | rx_status = IEEE80211_SKB_RXCB(skb); |
1633 | ||
dabf9844 JB |
1634 | /* This may be overridden by iwl_mvm_rx_he() to HE_RU */ |
1635 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
1636 | case RATE_MCS_CHAN_WIDTH_20: | |
1637 | break; | |
1638 | case RATE_MCS_CHAN_WIDTH_40: | |
1639 | rx_status->bw = RATE_INFO_BW_40; | |
1640 | break; | |
1641 | case RATE_MCS_CHAN_WIDTH_80: | |
1642 | rx_status->bw = RATE_INFO_BW_80; | |
1643 | break; | |
1644 | case RATE_MCS_CHAN_WIDTH_160: | |
1645 | rx_status->bw = RATE_INFO_BW_160; | |
1646 | break; | |
1647 | } | |
1648 | ||
c630b477 | 1649 | if (rate_n_flags & RATE_MCS_HE_MSK) |
6721039d ST |
1650 | iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags, |
1651 | phy_info, queue); | |
1652 | ||
1653 | iwl_mvm_decode_lsig(skb, &phy_data); | |
514c3069 | 1654 | |
18ead597 GBA |
1655 | rx_status = IEEE80211_SKB_RXCB(skb); |
1656 | ||
fabdcc2e | 1657 | if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, phy_info, desc, |
9d0fc5a5 DS |
1658 | le32_to_cpu(pkt->len_n_flags), queue, |
1659 | &crypt_len)) { | |
780e87c2 JB |
1660 | kfree_skb(skb); |
1661 | return; | |
1662 | } | |
1663 | ||
1664 | /* | |
1665 | * Keep packets with CRC errors (and with overrun) for monitor mode | |
1666 | * (otherwise the firmware discards them) but mark them as bad. | |
1667 | */ | |
1668 | if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) || | |
1669 | !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) { | |
1670 | IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", | |
1671 | le16_to_cpu(desc->status)); | |
1672 | rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; | |
1673 | } | |
fbe41127 | 1674 | /* set the preamble flag if appropriate */ |
486af863 JB |
1675 | if (rate_n_flags & RATE_MCS_CCK_MSK && |
1676 | phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE) | |
7fdd69c5 | 1677 | rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE; |
fbe41127 SS |
1678 | |
1679 | if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) { | |
18ead597 GBA |
1680 | u64 tsf_on_air_rise; |
1681 | ||
286ca8eb | 1682 | if (mvm->trans->trans_cfg->device_family >= |
3681021f | 1683 | IWL_DEVICE_FAMILY_AX210) |
18ead597 GBA |
1684 | tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise); |
1685 | else | |
1686 | tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise); | |
1687 | ||
1688 | rx_status->mactime = tsf_on_air_rise; | |
fbe41127 SS |
1689 | /* TSF as indicated by the firmware is at INA time */ |
1690 | rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; | |
bd6fc655 LK |
1691 | } |
1692 | ||
18ead597 | 1693 | rx_status->device_timestamp = gp2_on_air_rise; |
65b9425c TM |
1694 | if (iwl_mvm_is_band_in_rx_supported(mvm)) { |
1695 | u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx); | |
1696 | ||
1697 | rx_status->band = iwl_mvm_nl80211_band_from_rx_msdu(band); | |
1698 | } else { | |
1699 | rx_status->band = channel > 14 ? NL80211_BAND_5GHZ : | |
1700 | NL80211_BAND_2GHZ; | |
1701 | } | |
18ead597 | 1702 | rx_status->freq = ieee80211_channel_to_frequency(channel, |
780e87c2 | 1703 | rx_status->band); |
18ead597 GBA |
1704 | iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a, |
1705 | energy_b); | |
fbe41127 SS |
1706 | |
1707 | /* update aggregation data for monitor sake on default queue */ | |
1708 | if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) { | |
1709 | bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE; | |
1710 | ||
1711 | rx_status->flag |= RX_FLAG_AMPDU_DETAILS; | |
5213e8a8 JB |
1712 | /* |
1713 | * Toggle is switched whenever new aggregation starts. Make | |
1714 | * sure ampdu_reference is never 0 so we can later use it to | |
1715 | * see if the frame was really part of an A-MPDU or not. | |
1716 | */ | |
fbe41127 SS |
1717 | if (toggle_bit != mvm->ampdu_toggle) { |
1718 | mvm->ampdu_ref++; | |
5213e8a8 JB |
1719 | if (mvm->ampdu_ref == 0) |
1720 | mvm->ampdu_ref++; | |
fbe41127 SS |
1721 | mvm->ampdu_toggle = toggle_bit; |
1722 | } | |
1f7698ab | 1723 | rx_status->ampdu_reference = mvm->ampdu_ref; |
fbe41127 | 1724 | } |
780e87c2 | 1725 | |
3864be55 LC |
1726 | if (unlikely(mvm->monitor_on)) |
1727 | iwl_mvm_add_rtap_sniffer_config(mvm, skb); | |
1728 | ||
780e87c2 JB |
1729 | rcu_read_lock(); |
1730 | ||
c67a3d05 | 1731 | if (desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) { |
780e87c2 JB |
1732 | u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK; |
1733 | ||
0ae98812 | 1734 | if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) { |
780e87c2 JB |
1735 | sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); |
1736 | if (IS_ERR(sta)) | |
1737 | sta = NULL; | |
1738 | } | |
1739 | } else if (!is_multicast_ether_addr(hdr->addr2)) { | |
1740 | /* | |
1741 | * This is fine since we prevent two stations with the same | |
1742 | * address from being added. | |
1743 | */ | |
1744 | sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); | |
1745 | } | |
1746 | ||
1747 | if (sta) { | |
1748 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
d3a108a4 AO |
1749 | struct ieee80211_vif *tx_blocked_vif = |
1750 | rcu_dereference(mvm->csa_tx_blocked_vif); | |
10b2b201 SS |
1751 | u8 baid = (u8)((le32_to_cpu(desc->reorder_data) & |
1752 | IWL_RX_MPDU_REORDER_BAID_MASK) >> | |
1753 | IWL_RX_MPDU_REORDER_BAID_SHIFT); | |
6c042d75 SS |
1754 | struct iwl_fw_dbg_trigger_tlv *trig; |
1755 | struct ieee80211_vif *vif = mvmsta->vif; | |
780e87c2 | 1756 | |
7d9d0d56 LC |
1757 | if (!mvm->tcm.paused && len >= sizeof(*hdr) && |
1758 | !is_multicast_ether_addr(hdr->addr1) && | |
1759 | ieee80211_is_data(hdr->frame_control) && | |
1760 | time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD)) | |
1761 | schedule_delayed_work(&mvm->tcm.work, 0); | |
1762 | ||
780e87c2 JB |
1763 | /* |
1764 | * We have tx blocked stations (with CS bit). If we heard | |
1765 | * frames from a blocked station on a new channel we can | |
1766 | * TX to it again. | |
1767 | */ | |
6c042d75 | 1768 | if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) { |
d3a108a4 AO |
1769 | struct iwl_mvm_vif *mvmvif = |
1770 | iwl_mvm_vif_from_mac80211(tx_blocked_vif); | |
1771 | ||
1772 | if (mvmvif->csa_target_freq == rx_status->freq) | |
1773 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, | |
1774 | false); | |
1775 | } | |
780e87c2 | 1776 | |
ecaf71de | 1777 | rs_update_last_rssi(mvm, mvmsta, rx_status); |
780e87c2 | 1778 | |
6c042d75 SS |
1779 | trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, |
1780 | ieee80211_vif_to_wdev(vif), | |
1781 | FW_DBG_TRIGGER_RSSI); | |
1782 | ||
1783 | if (trig && ieee80211_is_beacon(hdr->frame_control)) { | |
780e87c2 | 1784 | struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; |
780e87c2 JB |
1785 | s32 rssi; |
1786 | ||
780e87c2 JB |
1787 | rssi_trig = (void *)trig->data; |
1788 | rssi = le32_to_cpu(rssi_trig->rssi); | |
1789 | ||
6c042d75 | 1790 | if (rx_status->signal < rssi) |
7174beb6 JB |
1791 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, |
1792 | NULL); | |
780e87c2 JB |
1793 | } |
1794 | ||
780e87c2 JB |
1795 | if (ieee80211_is_data(hdr->frame_control)) |
1796 | iwl_mvm_rx_csum(sta, skb, desc); | |
a571f5f6 | 1797 | |
5ab2ba93 | 1798 | if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) { |
a571f5f6 | 1799 | kfree_skb(skb); |
cb2de6bb | 1800 | goto out; |
a571f5f6 | 1801 | } |
62d23403 SS |
1802 | |
1803 | /* | |
1804 | * Our hardware de-aggregates AMSDUs but copies the mac header | |
1805 | * as it to the de-aggregated MPDUs. We need to turn off the | |
1806 | * AMSDU bit in the QoS control ourselves. | |
9dfa2151 | 1807 | * In addition, HW reverses addr3 and addr4 - reverse it back. |
62d23403 SS |
1808 | */ |
1809 | if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) && | |
1810 | !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) { | |
1811 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
1812 | ||
1813 | *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; | |
a56cb4f0 | 1814 | |
286ca8eb | 1815 | if (mvm->trans->trans_cfg->device_family == |
e4d72208 SS |
1816 | IWL_DEVICE_FAMILY_9000) { |
1817 | iwl_mvm_flip_address(hdr->addr3); | |
9dfa2151 | 1818 | |
e4d72208 SS |
1819 | if (ieee80211_has_a4(hdr->frame_control)) |
1820 | iwl_mvm_flip_address(hdr->addr4); | |
9dfa2151 | 1821 | } |
62d23403 | 1822 | } |
5d43eab6 SS |
1823 | if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) { |
1824 | u32 reorder_data = le32_to_cpu(desc->reorder_data); | |
1825 | ||
1826 | iwl_mvm_agg_rx_received(mvm, reorder_data, baid); | |
1827 | } | |
780e87c2 JB |
1828 | } |
1829 | ||
4c59ff5a SS |
1830 | if (!(rate_n_flags & RATE_MCS_CCK_MSK) && |
1831 | rate_n_flags & RATE_MCS_SGI_MSK) | |
7fdd69c5 | 1832 | rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; |
780e87c2 | 1833 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) |
7fdd69c5 | 1834 | rx_status->enc_flags |= RX_ENC_FLAG_HT_GF; |
780e87c2 | 1835 | if (rate_n_flags & RATE_MCS_LDPC_MSK) |
7fdd69c5 | 1836 | rx_status->enc_flags |= RX_ENC_FLAG_LDPC; |
780e87c2 | 1837 | if (rate_n_flags & RATE_MCS_HT_MSK) { |
77e40945 | 1838 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> |
780e87c2 | 1839 | RATE_MCS_STBC_POS; |
da6a4352 | 1840 | rx_status->encoding = RX_ENC_HT; |
780e87c2 | 1841 | rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; |
7fdd69c5 | 1842 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; |
780e87c2 | 1843 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { |
77e40945 | 1844 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> |
780e87c2 | 1845 | RATE_MCS_STBC_POS; |
8613c948 | 1846 | rx_status->nss = |
780e87c2 JB |
1847 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> |
1848 | RATE_VHT_MCS_NSS_POS) + 1; | |
1849 | rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; | |
da6a4352 | 1850 | rx_status->encoding = RX_ENC_VHT; |
7fdd69c5 | 1851 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; |
780e87c2 | 1852 | if (rate_n_flags & RATE_MCS_BF_MSK) |
7fdd69c5 | 1853 | rx_status->enc_flags |= RX_ENC_FLAG_BF; |
c630b477 | 1854 | } else if (!(rate_n_flags & RATE_MCS_HE_MSK)) { |
cb2de6bb SS |
1855 | int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, |
1856 | rx_status->band); | |
1857 | ||
1858 | if (WARN(rate < 0 || rate > 0xFF, | |
1859 | "Invalid rate flags 0x%x, band %d,\n", | |
1860 | rate_n_flags, rx_status->band)) { | |
1861 | kfree_skb(skb); | |
1862 | goto out; | |
1863 | } | |
1864 | rx_status->rate_idx = rate; | |
780e87c2 JB |
1865 | } |
1866 | ||
fbe41127 SS |
1867 | /* management stuff on default queue */ |
1868 | if (!queue) { | |
1869 | if (unlikely((ieee80211_is_beacon(hdr->frame_control) || | |
1870 | ieee80211_is_probe_resp(hdr->frame_control)) && | |
1871 | mvm->sched_scan_pass_all == | |
1872 | SCHED_SCAN_PASS_ALL_ENABLED)) | |
1873 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND; | |
1874 | ||
1875 | if (unlikely(ieee80211_is_beacon(hdr->frame_control) || | |
1876 | ieee80211_is_probe_resp(hdr->frame_control))) | |
9285ec4c | 1877 | rx_status->boottime_ns = ktime_get_boottime_ns(); |
fbe41127 | 1878 | } |
780e87c2 | 1879 | |
de1887c0 LC |
1880 | if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) { |
1881 | kfree_skb(skb); | |
1882 | goto out; | |
1883 | } | |
1884 | ||
b915c101 | 1885 | if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc)) |
9bf13bee JB |
1886 | iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, |
1887 | sta, csi); | |
cb2de6bb | 1888 | out: |
f5e28eac | 1889 | rcu_read_unlock(); |
780e87c2 | 1890 | } |
585a6fcc | 1891 | |
d47cdb88 JB |
1892 | void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi, |
1893 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
bf9dfeda ST |
1894 | { |
1895 | struct ieee80211_rx_status *rx_status; | |
1896 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1897 | struct iwl_rx_no_data *desc = (void *)pkt->data; | |
1898 | u32 rate_n_flags = le32_to_cpu(desc->rate); | |
1899 | u32 gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time); | |
1900 | u32 rssi = le32_to_cpu(desc->rssi); | |
1901 | u32 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK; | |
1902 | u16 phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD; | |
1903 | struct ieee80211_sta *sta = NULL; | |
1904 | struct sk_buff *skb; | |
1905 | u8 channel, energy_a, energy_b; | |
1906 | struct iwl_mvm_rx_phy_data phy_data = { | |
1907 | .d0 = desc->phy_info[0], | |
1908 | .info_type = IWL_RX_PHY_INFO_TYPE_NONE, | |
1909 | }; | |
1910 | ||
1911 | if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) | |
1912 | return; | |
1913 | ||
bf9dfeda ST |
1914 | energy_a = (rssi & RX_NO_DATA_CHAIN_A_MSK) >> RX_NO_DATA_CHAIN_A_POS; |
1915 | energy_b = (rssi & RX_NO_DATA_CHAIN_B_MSK) >> RX_NO_DATA_CHAIN_B_POS; | |
1916 | channel = (rssi & RX_NO_DATA_CHANNEL_MSK) >> RX_NO_DATA_CHANNEL_POS; | |
1917 | ||
1918 | phy_data.info_type = | |
1919 | le32_get_bits(desc->phy_info[1], | |
1920 | IWL_RX_PHY_DATA1_INFO_TYPE_MASK); | |
1921 | ||
1922 | /* Dont use dev_alloc_skb(), we'll have enough headroom once | |
1923 | * ieee80211_hdr pulled. | |
1924 | */ | |
1925 | skb = alloc_skb(128, GFP_ATOMIC); | |
1926 | if (!skb) { | |
1927 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
1928 | return; | |
1929 | } | |
1930 | ||
1931 | rx_status = IEEE80211_SKB_RXCB(skb); | |
1932 | ||
1933 | /* 0-length PSDU */ | |
1934 | rx_status->flag |= RX_FLAG_NO_PSDU; | |
d47cdb88 JB |
1935 | |
1936 | switch (info_type) { | |
1937 | case RX_NO_DATA_INFO_TYPE_NDP: | |
1938 | rx_status->zero_length_psdu_type = | |
1939 | IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING; | |
1940 | break; | |
1941 | case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED: | |
1942 | case RX_NO_DATA_INFO_TYPE_HE_TB_UNMATCHED: | |
1943 | rx_status->zero_length_psdu_type = | |
1944 | IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED; | |
1945 | break; | |
1946 | default: | |
1947 | rx_status->zero_length_psdu_type = | |
1948 | IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR; | |
1949 | break; | |
1950 | } | |
bf9dfeda ST |
1951 | |
1952 | /* This may be overridden by iwl_mvm_rx_he() to HE_RU */ | |
1953 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
1954 | case RATE_MCS_CHAN_WIDTH_20: | |
1955 | break; | |
1956 | case RATE_MCS_CHAN_WIDTH_40: | |
1957 | rx_status->bw = RATE_INFO_BW_40; | |
1958 | break; | |
1959 | case RATE_MCS_CHAN_WIDTH_80: | |
1960 | rx_status->bw = RATE_INFO_BW_80; | |
1961 | break; | |
1962 | case RATE_MCS_CHAN_WIDTH_160: | |
1963 | rx_status->bw = RATE_INFO_BW_160; | |
1964 | break; | |
1965 | } | |
1966 | ||
1967 | if (rate_n_flags & RATE_MCS_HE_MSK) | |
1968 | iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags, | |
1969 | phy_info, queue); | |
1970 | ||
1971 | iwl_mvm_decode_lsig(skb, &phy_data); | |
1972 | ||
1973 | rx_status->device_timestamp = gp2_on_air_rise; | |
1974 | rx_status->band = channel > 14 ? NL80211_BAND_5GHZ : | |
1975 | NL80211_BAND_2GHZ; | |
1976 | rx_status->freq = ieee80211_channel_to_frequency(channel, | |
1977 | rx_status->band); | |
1978 | iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a, | |
1979 | energy_b); | |
1980 | ||
1981 | rcu_read_lock(); | |
1982 | ||
1983 | if (!(rate_n_flags & RATE_MCS_CCK_MSK) && | |
1984 | rate_n_flags & RATE_MCS_SGI_MSK) | |
1985 | rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; | |
1986 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) | |
1987 | rx_status->enc_flags |= RX_ENC_FLAG_HT_GF; | |
1988 | if (rate_n_flags & RATE_MCS_LDPC_MSK) | |
1989 | rx_status->enc_flags |= RX_ENC_FLAG_LDPC; | |
1990 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
1991 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> | |
1992 | RATE_MCS_STBC_POS; | |
1993 | rx_status->encoding = RX_ENC_HT; | |
1994 | rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; | |
1995 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; | |
1996 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { | |
1997 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> | |
1998 | RATE_MCS_STBC_POS; | |
bf9dfeda ST |
1999 | rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; |
2000 | rx_status->encoding = RX_ENC_VHT; | |
2001 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; | |
2002 | if (rate_n_flags & RATE_MCS_BF_MSK) | |
2003 | rx_status->enc_flags |= RX_ENC_FLAG_BF; | |
c97781d1 ST |
2004 | /* |
2005 | * take the nss from the rx_vec since the rate_n_flags has | |
2006 | * only 2 bits for the nss which gives a max of 4 ss but | |
2007 | * there may be up to 8 spatial streams | |
2008 | */ | |
2009 | rx_status->nss = | |
2010 | le32_get_bits(desc->rx_vec[0], | |
2011 | RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1; | |
2012 | } else if (rate_n_flags & RATE_MCS_HE_MSK) { | |
2013 | rx_status->nss = | |
2014 | le32_get_bits(desc->rx_vec[0], | |
2015 | RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1; | |
2016 | } else { | |
bf9dfeda ST |
2017 | int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, |
2018 | rx_status->band); | |
2019 | ||
2020 | if (WARN(rate < 0 || rate > 0xFF, | |
2021 | "Invalid rate flags 0x%x, band %d,\n", | |
2022 | rate_n_flags, rx_status->band)) { | |
2023 | kfree_skb(skb); | |
2024 | goto out; | |
2025 | } | |
2026 | rx_status->rate_idx = rate; | |
2027 | } | |
2028 | ||
ed714460 | 2029 | ieee80211_rx_napi(mvm->hw, sta, skb, napi); |
bf9dfeda ST |
2030 | out: |
2031 | rcu_read_unlock(); | |
2032 | } | |
c61b655a | 2033 | |
a338384b | 2034 | void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi, |
585a6fcc SS |
2035 | struct iwl_rx_cmd_buffer *rxb, int queue) |
2036 | { | |
a338384b SS |
2037 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
2038 | struct iwl_frame_release *release = (void *)pkt->data; | |
a338384b | 2039 | |
c61b655a | 2040 | iwl_mvm_release_frames_from_notif(mvm, napi, release->baid, |
ecd09ddc EG |
2041 | le16_to_cpu(release->nssn), |
2042 | queue, 0); | |
585a6fcc | 2043 | } |
fe69b7d1 JB |
2044 | |
2045 | void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi, | |
2046 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
2047 | { | |
2048 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2049 | struct iwl_bar_frame_release *release = (void *)pkt->data; | |
2050 | unsigned int baid = le32_get_bits(release->ba_info, | |
2051 | IWL_BAR_FRAME_RELEASE_BAID_MASK); | |
2052 | unsigned int nssn = le32_get_bits(release->ba_info, | |
2053 | IWL_BAR_FRAME_RELEASE_NSSN_MASK); | |
2054 | unsigned int sta_id = le32_get_bits(release->sta_tid, | |
2055 | IWL_BAR_FRAME_RELEASE_STA_MASK); | |
2056 | unsigned int tid = le32_get_bits(release->sta_tid, | |
2057 | IWL_BAR_FRAME_RELEASE_TID_MASK); | |
2058 | struct iwl_mvm_baid_data *baid_data; | |
2059 | ||
2060 | if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID || | |
2061 | baid >= ARRAY_SIZE(mvm->baid_map))) | |
2062 | return; | |
2063 | ||
2064 | rcu_read_lock(); | |
2065 | baid_data = rcu_dereference(mvm->baid_map[baid]); | |
2066 | if (!baid_data) { | |
2067 | IWL_DEBUG_RX(mvm, | |
2068 | "Got valid BAID %d but not allocated, invalid BAR release!\n", | |
2069 | baid); | |
2070 | goto out; | |
2071 | } | |
2072 | ||
2073 | if (WARN(tid != baid_data->tid || sta_id != baid_data->sta_id, | |
2074 | "baid 0x%x is mapped to sta:%d tid:%d, but BAR release received for sta:%d tid:%d\n", | |
2075 | baid, baid_data->sta_id, baid_data->tid, sta_id, | |
2076 | tid)) | |
2077 | goto out; | |
2078 | ||
2079 | iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue, 0); | |
2080 | out: | |
2081 | rcu_read_unlock(); | |
2082 | } |