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8e99ea8d JB |
1 | // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
2 | /* | |
f1490546 | 3 | * Copyright (C) 2012-2014, 2018-2022 Intel Corporation |
8e99ea8d JB |
4 | * Copyright (C) 2013-2015 Intel Mobile Communications GmbH |
5 | * Copyright (C) 2015-2017 Intel Deutschland GmbH | |
6 | */ | |
780e87c2 JB |
7 | #include <linux/etherdevice.h> |
8 | #include <linux/skbuff.h> | |
9 | #include "iwl-trans.h" | |
10 | #include "mvm.h" | |
11 | #include "fw-api.h" | |
780e87c2 | 12 | |
3619b088 JB |
13 | static void *iwl_mvm_skb_get_hdr(struct sk_buff *skb) |
14 | { | |
15 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
16 | u8 *data = skb->data; | |
17 | ||
18 | /* Alignment concerns */ | |
19 | BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he) % 4); | |
20 | BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he_mu) % 4); | |
21 | BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_lsig) % 4); | |
22 | BUILD_BUG_ON(sizeof(struct ieee80211_vendor_radiotap) % 4); | |
23 | ||
24 | if (rx_status->flag & RX_FLAG_RADIOTAP_HE) | |
25 | data += sizeof(struct ieee80211_radiotap_he); | |
26 | if (rx_status->flag & RX_FLAG_RADIOTAP_HE_MU) | |
27 | data += sizeof(struct ieee80211_radiotap_he_mu); | |
28 | if (rx_status->flag & RX_FLAG_RADIOTAP_LSIG) | |
29 | data += sizeof(struct ieee80211_radiotap_lsig); | |
30 | if (rx_status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) { | |
31 | struct ieee80211_vendor_radiotap *radiotap = (void *)data; | |
32 | ||
33 | data += sizeof(*radiotap) + radiotap->len + radiotap->pad; | |
34 | } | |
35 | ||
36 | return data; | |
37 | } | |
38 | ||
f5e28eac JB |
39 | static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb, |
40 | int queue, struct ieee80211_sta *sta) | |
41 | { | |
42 | struct iwl_mvm_sta *mvmsta; | |
3619b088 | 43 | struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb); |
f5e28eac JB |
44 | struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb); |
45 | struct iwl_mvm_key_pn *ptk_pn; | |
5ab2ba93 | 46 | int res; |
f5e28eac JB |
47 | u8 tid, keyidx; |
48 | u8 pn[IEEE80211_CCMP_PN_LEN]; | |
49 | u8 *extiv; | |
50 | ||
51 | /* do PN checking */ | |
52 | ||
53 | /* multicast and non-data only arrives on default queue */ | |
54 | if (!ieee80211_is_data(hdr->frame_control) || | |
55 | is_multicast_ether_addr(hdr->addr1)) | |
56 | return 0; | |
57 | ||
58 | /* do not check PN for open AP */ | |
59 | if (!(stats->flag & RX_FLAG_DECRYPTED)) | |
60 | return 0; | |
61 | ||
62 | /* | |
63 | * avoid checking for default queue - we don't want to replicate | |
64 | * all the logic that's necessary for checking the PN on fragmented | |
65 | * frames, leave that to mac80211 | |
66 | */ | |
67 | if (queue == 0) | |
68 | return 0; | |
69 | ||
70 | /* if we are here - this for sure is either CCMP or GCMP */ | |
71 | if (IS_ERR_OR_NULL(sta)) { | |
3df5c0dd AS |
72 | IWL_DEBUG_DROP(mvm, |
73 | "expected hw-decrypted unicast frame for station\n"); | |
f5e28eac JB |
74 | return -1; |
75 | } | |
76 | ||
77 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
78 | ||
79 | extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); | |
80 | keyidx = extiv[3] >> 6; | |
81 | ||
82 | ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]); | |
83 | if (!ptk_pn) | |
84 | return -1; | |
85 | ||
86 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
8f66e064 | 87 | tid = ieee80211_get_tid(hdr); |
f5e28eac JB |
88 | else |
89 | tid = 0; | |
90 | ||
91 | /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */ | |
92 | if (tid >= IWL_MAX_TID_COUNT) | |
93 | return -1; | |
94 | ||
95 | /* load pn */ | |
96 | pn[0] = extiv[7]; | |
97 | pn[1] = extiv[6]; | |
98 | pn[2] = extiv[5]; | |
99 | pn[3] = extiv[4]; | |
100 | pn[4] = extiv[1]; | |
101 | pn[5] = extiv[0]; | |
102 | ||
5ab2ba93 SS |
103 | res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN); |
104 | if (res < 0) | |
105 | return -1; | |
106 | if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN)) | |
f5e28eac JB |
107 | return -1; |
108 | ||
5ab2ba93 | 109 | memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN); |
f5e28eac JB |
110 | stats->flag |= RX_FLAG_PN_VALIDATED; |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
115 | /* iwl_mvm_create_skb Adds the rxb to a new skb */ | |
de1887c0 LC |
116 | static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb, |
117 | struct ieee80211_hdr *hdr, u16 len, u8 crypt_len, | |
118 | struct iwl_rx_cmd_buffer *rxb) | |
780e87c2 | 119 | { |
e29cc6b9 SS |
120 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
121 | struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; | |
122 | unsigned int headlen, fraglen, pad_len = 0; | |
123 | unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); | |
40a0b38d IP |
124 | u8 mic_crc_len = u8_get_bits(desc->mac_flags1, |
125 | IWL_RX_MPDU_MFLG1_MIC_CRC_LEN_MASK) << 1; | |
e29cc6b9 | 126 | |
4b40571e | 127 | if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) { |
1e5b7750 | 128 | len -= 2; |
e29cc6b9 | 129 | pad_len = 2; |
4b40571e | 130 | } |
780e87c2 | 131 | |
40a0b38d IP |
132 | /* |
133 | * For non monitor interface strip the bytes the RADA might not have | |
134 | * removed. As monitor interface cannot exist with other interfaces | |
135 | * this removal is safe. | |
136 | */ | |
137 | if (mic_crc_len && !ieee80211_hw_check(mvm->hw, RX_INCLUDES_FCS)) { | |
138 | u32 pkt_flags = le32_to_cpu(pkt->len_n_flags); | |
139 | ||
140 | /* | |
141 | * If RADA was not enabled then decryption was not performed so | |
142 | * the MIC cannot be removed. | |
143 | */ | |
144 | if (!(pkt_flags & FH_RSCSR_RADA_EN)) { | |
145 | if (WARN_ON(crypt_len > mic_crc_len)) | |
146 | return -EINVAL; | |
147 | ||
148 | mic_crc_len -= crypt_len; | |
149 | } | |
150 | ||
151 | if (WARN_ON(mic_crc_len > len)) | |
152 | return -EINVAL; | |
153 | ||
154 | len -= mic_crc_len; | |
155 | } | |
156 | ||
780e87c2 JB |
157 | /* If frame is small enough to fit in skb->head, pull it completely. |
158 | * If not, only pull ieee80211_hdr (including crypto if present, and | |
159 | * an additional 8 bytes for SNAP/ethertype, see below) so that | |
160 | * splice() or TCP coalesce are more efficient. | |
161 | * | |
162 | * Since, in addition, ieee80211_data_to_8023() always pull in at | |
163 | * least 8 bytes (possibly more for mesh) we can do the same here | |
164 | * to save the cost of doing it later. That still doesn't pull in | |
165 | * the actual IP header since the typical case has a SNAP header. | |
166 | * If the latter changes (there are efforts in the standards group | |
167 | * to do so) we should revisit this and ieee80211_data_to_8023(). | |
168 | */ | |
e29cc6b9 SS |
169 | headlen = (len <= skb_tailroom(skb)) ? len : |
170 | hdrlen + crypt_len + 8; | |
780e87c2 | 171 | |
e29cc6b9 SS |
172 | /* The firmware may align the packet to DWORD. |
173 | * The padding is inserted after the IV. | |
174 | * After copying the header + IV skip the padding if | |
175 | * present before copying packet data. | |
176 | */ | |
177 | hdrlen += crypt_len; | |
de1887c0 | 178 | |
8ccb768c | 179 | if (unlikely(headlen < hdrlen)) |
de1887c0 | 180 | return -EINVAL; |
de1887c0 | 181 | |
59ae1d12 JB |
182 | skb_put_data(skb, hdr, hdrlen); |
183 | skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen); | |
e29cc6b9 | 184 | |
59ca9572 JB |
185 | /* |
186 | * If we did CHECKSUM_COMPLETE, the hardware only does it right for | |
187 | * certain cases and starts the checksum after the SNAP. Check if | |
188 | * this is the case - it's easier to just bail out to CHECKSUM_NONE | |
189 | * in the cases the hardware didn't handle, since it's rare to see | |
190 | * such packets, even though the hardware did calculate the checksum | |
191 | * in this case, just starting after the MAC header instead. | |
b6f5b647 JB |
192 | * |
193 | * Starting from Bz hardware, it calculates starting directly after | |
194 | * the MAC header, so that matches mac80211's expectation. | |
59ca9572 | 195 | */ |
b6f5b647 JB |
196 | if (skb->ip_summed == CHECKSUM_COMPLETE && |
197 | mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ) { | |
59ca9572 JB |
198 | struct { |
199 | u8 hdr[6]; | |
200 | __be16 type; | |
201 | } __packed *shdr = (void *)((u8 *)hdr + hdrlen + pad_len); | |
202 | ||
203 | if (unlikely(headlen - hdrlen < sizeof(*shdr) || | |
204 | !ether_addr_equal(shdr->hdr, rfc1042_header) || | |
205 | (shdr->type != htons(ETH_P_IP) && | |
206 | shdr->type != htons(ETH_P_ARP) && | |
207 | shdr->type != htons(ETH_P_IPV6) && | |
208 | shdr->type != htons(ETH_P_8021Q) && | |
209 | shdr->type != htons(ETH_P_PAE) && | |
210 | shdr->type != htons(ETH_P_TDLS)))) | |
211 | skb->ip_summed = CHECKSUM_NONE; | |
667aa742 JB |
212 | else |
213 | /* mac80211 assumes full CSUM including SNAP header */ | |
214 | skb_postpush_rcsum(skb, shdr, sizeof(*shdr)); | |
59ca9572 JB |
215 | } |
216 | ||
e29cc6b9 | 217 | fraglen = len - headlen; |
780e87c2 JB |
218 | |
219 | if (fraglen) { | |
3827cb59 JB |
220 | int offset = (u8 *)hdr + headlen + pad_len - |
221 | (u8 *)rxb_addr(rxb) + rxb_offset(rxb); | |
780e87c2 JB |
222 | |
223 | skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, | |
224 | fraglen, rxb->truesize); | |
225 | } | |
de1887c0 LC |
226 | |
227 | return 0; | |
f5e28eac | 228 | } |
780e87c2 | 229 | |
9bf13bee JB |
230 | static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm, |
231 | struct sk_buff *skb) | |
232 | { | |
233 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
234 | struct ieee80211_vendor_radiotap *radiotap; | |
3619b088 | 235 | const int size = sizeof(*radiotap) + sizeof(__le16); |
9bf13bee JB |
236 | |
237 | if (!mvm->cur_aid) | |
238 | return; | |
239 | ||
3619b088 JB |
240 | /* ensure alignment */ |
241 | BUILD_BUG_ON((size + 2) % 4); | |
242 | ||
243 | radiotap = skb_put(skb, size + 2); | |
9bf13bee JB |
244 | radiotap->align = 1; |
245 | /* Intel OUI */ | |
246 | radiotap->oui[0] = 0xf6; | |
247 | radiotap->oui[1] = 0x54; | |
248 | radiotap->oui[2] = 0x25; | |
249 | /* radiotap sniffer config sub-namespace */ | |
250 | radiotap->subns = 1; | |
251 | radiotap->present = 0x1; | |
252 | radiotap->len = size - sizeof(*radiotap); | |
3619b088 | 253 | radiotap->pad = 2; |
9bf13bee JB |
254 | |
255 | /* fill the data now */ | |
256 | memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid)); | |
3619b088 JB |
257 | /* and clear the padding */ |
258 | memset(radiotap->data + sizeof(__le16), 0, radiotap->pad); | |
9bf13bee JB |
259 | |
260 | rx_status->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA; | |
261 | } | |
262 | ||
f5e28eac JB |
263 | /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */ |
264 | static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, | |
265 | struct napi_struct *napi, | |
266 | struct sk_buff *skb, int queue, | |
544ab2a9 | 267 | struct ieee80211_sta *sta) |
f5e28eac | 268 | { |
ed714460 | 269 | if (iwl_mvm_check_pn(mvm, skb, queue, sta)) |
f5e28eac | 270 | kfree_skb(skb); |
5213e8a8 | 271 | else |
43ec72b7 | 272 | ieee80211_rx_napi(mvm->hw, sta, skb, napi); |
780e87c2 JB |
273 | } |
274 | ||
275 | static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, | |
18ead597 GBA |
276 | struct ieee80211_rx_status *rx_status, |
277 | u32 rate_n_flags, int energy_a, | |
278 | int energy_b) | |
780e87c2 | 279 | { |
18ead597 GBA |
280 | int max_energy; |
281 | u32 rate_flags = rate_n_flags; | |
780e87c2 | 282 | |
780e87c2 | 283 | energy_a = energy_a ? -energy_a : S8_MIN; |
780e87c2 | 284 | energy_b = energy_b ? -energy_b : S8_MIN; |
780e87c2 | 285 | max_energy = max(energy_a, energy_b); |
780e87c2 | 286 | |
d56a7801 SS |
287 | IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n", |
288 | energy_a, energy_b, max_energy); | |
780e87c2 JB |
289 | |
290 | rx_status->signal = max_energy; | |
c4e45c84 ST |
291 | rx_status->chains = |
292 | (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS; | |
780e87c2 JB |
293 | rx_status->chain_signal[0] = energy_a; |
294 | rx_status->chain_signal[1] = energy_b; | |
780e87c2 JB |
295 | } |
296 | ||
65db391d JB |
297 | static int iwl_mvm_rx_mgmt_prot(struct ieee80211_sta *sta, |
298 | struct ieee80211_hdr *hdr, | |
299 | struct iwl_rx_mpdu_desc *desc, | |
300 | u32 status) | |
b1fdc250 JB |
301 | { |
302 | struct iwl_mvm_sta *mvmsta; | |
303 | struct iwl_mvm_vif *mvmvif; | |
b1fdc250 JB |
304 | u8 keyid; |
305 | struct ieee80211_key_conf *key; | |
306 | u32 len = le16_to_cpu(desc->mpdu_len); | |
307 | const u8 *frame = (void *)hdr; | |
308 | ||
65db391d JB |
309 | if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE) |
310 | return 0; | |
311 | ||
b1fdc250 JB |
312 | /* |
313 | * For non-beacon, we don't really care. But beacons may | |
314 | * be filtered out, and we thus need the firmware's replay | |
315 | * detection, otherwise beacons the firmware previously | |
316 | * filtered could be replayed, or something like that, and | |
317 | * it can filter a lot - though usually only if nothing has | |
318 | * changed. | |
319 | */ | |
320 | if (!ieee80211_is_beacon(hdr->frame_control)) | |
321 | return 0; | |
322 | ||
e257d969 JB |
323 | /* key mismatch - will also report !MIC_OK but we shouldn't count it */ |
324 | if (!(status & IWL_RX_MPDU_STATUS_KEY_VALID)) | |
325 | return -1; | |
326 | ||
b1fdc250 JB |
327 | /* good cases */ |
328 | if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK && | |
329 | !(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) | |
330 | return 0; | |
331 | ||
332 | if (!sta) | |
333 | return -1; | |
334 | ||
335 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
336 | ||
b1fdc250 JB |
337 | mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); |
338 | ||
e257d969 JB |
339 | /* |
340 | * both keys will have the same cipher and MIC length, use | |
341 | * whichever one is available | |
342 | */ | |
343 | key = rcu_dereference(mvmvif->bcn_prot.keys[0]); | |
344 | if (!key) { | |
345 | key = rcu_dereference(mvmvif->bcn_prot.keys[1]); | |
346 | if (!key) | |
347 | return -1; | |
348 | } | |
b1fdc250 JB |
349 | |
350 | if (len < key->icv_len + IEEE80211_GMAC_PN_LEN + 2) | |
351 | return -1; | |
352 | ||
e257d969 | 353 | /* get the real key ID */ |
b1fdc250 | 354 | keyid = frame[len - key->icv_len - IEEE80211_GMAC_PN_LEN - 2]; |
e257d969 JB |
355 | /* and if that's the other key, look it up */ |
356 | if (keyid != key->keyidx) { | |
357 | /* | |
358 | * shouldn't happen since firmware checked, but be safe | |
359 | * in case the MIC length is wrong too, for example | |
360 | */ | |
361 | if (keyid != 6 && keyid != 7) | |
362 | return -1; | |
363 | key = rcu_dereference(mvmvif->bcn_prot.keys[keyid - 6]); | |
364 | if (!key) | |
365 | return -1; | |
366 | } | |
b1fdc250 JB |
367 | |
368 | /* Report status to mac80211 */ | |
369 | if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) | |
370 | ieee80211_key_mic_failure(key); | |
371 | else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR) | |
372 | ieee80211_key_replay(key); | |
373 | ||
374 | return -1; | |
375 | } | |
376 | ||
377 | static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
378 | struct ieee80211_hdr *hdr, | |
fabdcc2e SS |
379 | struct ieee80211_rx_status *stats, u16 phy_info, |
380 | struct iwl_rx_mpdu_desc *desc, | |
381 | u32 pkt_flags, int queue, u8 *crypt_len) | |
780e87c2 | 382 | { |
e365e7de | 383 | u32 status = le32_to_cpu(desc->status); |
780e87c2 | 384 | |
fabdcc2e SS |
385 | /* |
386 | * Drop UNKNOWN frames in aggregation, unless in monitor mode | |
387 | * (where we don't have the keys). | |
388 | * We limit this to aggregation because in TKIP this is a valid | |
389 | * scenario, since we may not have the (correct) TTAK (phase 1 | |
390 | * key) in the firmware. | |
391 | */ | |
392 | if (phy_info & IWL_RX_MPDU_PHY_AMPDU && | |
393 | (status & IWL_RX_MPDU_STATUS_SEC_MASK) == | |
394 | IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on) | |
395 | return -1; | |
396 | ||
65db391d JB |
397 | if (unlikely(ieee80211_is_mgmt(hdr->frame_control) && |
398 | !ieee80211_has_protected(hdr->frame_control))) | |
399 | return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status); | |
400 | ||
780e87c2 JB |
401 | if (!ieee80211_has_protected(hdr->frame_control) || |
402 | (status & IWL_RX_MPDU_STATUS_SEC_MASK) == | |
403 | IWL_RX_MPDU_STATUS_SEC_NONE) | |
404 | return 0; | |
405 | ||
406 | /* TODO: handle packets encrypted with unknown alg */ | |
407 | ||
408 | switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) { | |
409 | case IWL_RX_MPDU_STATUS_SEC_CCM: | |
410 | case IWL_RX_MPDU_STATUS_SEC_GCM: | |
f5e28eac | 411 | BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN); |
780e87c2 JB |
412 | /* alg is CCM: check MIC only */ |
413 | if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) | |
414 | return -1; | |
415 | ||
416 | stats->flag |= RX_FLAG_DECRYPTED; | |
bf190370 SS |
417 | if (pkt_flags & FH_RSCSR_RADA_EN) |
418 | stats->flag |= RX_FLAG_MIC_STRIPPED; | |
780e87c2 JB |
419 | *crypt_len = IEEE80211_CCMP_HDR_LEN; |
420 | return 0; | |
421 | case IWL_RX_MPDU_STATUS_SEC_TKIP: | |
422 | /* Don't drop the frame and decrypt it in SW */ | |
57df3839 SS |
423 | if (!fw_has_api(&mvm->fw->ucode_capa, |
424 | IWL_UCODE_TLV_API_DEPRECATE_TTAK) && | |
425 | !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK)) | |
780e87c2 JB |
426 | return 0; |
427 | ||
286ca8eb | 428 | if (mvm->trans->trans_cfg->gen2 && |
7f768ad5 DS |
429 | !(status & RX_MPDU_RES_STATUS_MIC_OK)) |
430 | stats->flag |= RX_FLAG_MMIC_ERROR; | |
431 | ||
780e87c2 | 432 | *crypt_len = IEEE80211_TKIP_IV_LEN; |
5a2abdca | 433 | fallthrough; |
780e87c2 JB |
434 | case IWL_RX_MPDU_STATUS_SEC_WEP: |
435 | if (!(status & IWL_RX_MPDU_STATUS_ICV_OK)) | |
436 | return -1; | |
437 | ||
438 | stats->flag |= RX_FLAG_DECRYPTED; | |
439 | if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == | |
440 | IWL_RX_MPDU_STATUS_SEC_WEP) | |
441 | *crypt_len = IEEE80211_WEP_IV_LEN; | |
9d0fc5a5 | 442 | |
7f768ad5 | 443 | if (pkt_flags & FH_RSCSR_RADA_EN) { |
9d0fc5a5 | 444 | stats->flag |= RX_FLAG_ICV_STRIPPED; |
286ca8eb | 445 | if (mvm->trans->trans_cfg->gen2) |
7f768ad5 DS |
446 | stats->flag |= RX_FLAG_MMIC_STRIPPED; |
447 | } | |
9d0fc5a5 | 448 | |
780e87c2 JB |
449 | return 0; |
450 | case IWL_RX_MPDU_STATUS_SEC_EXT_ENC: | |
451 | if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) | |
452 | return -1; | |
453 | stats->flag |= RX_FLAG_DECRYPTED; | |
454 | return 0; | |
b1fdc250 | 455 | case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC: |
65db391d | 456 | break; |
780e87c2 | 457 | default: |
94b952b5 EG |
458 | /* |
459 | * Sometimes we can get frames that were not decrypted | |
460 | * because the firmware didn't have the keys yet. This can | |
461 | * happen after connection where we can get multicast frames | |
462 | * before the GTK is installed. | |
463 | * Silently drop those frames. | |
464 | * Also drop un-decrypted frames in monitor mode. | |
465 | */ | |
466 | if (!is_multicast_ether_addr(hdr->addr1) && | |
467 | !mvm->monitor_on && net_ratelimit()) | |
baf41bc3 | 468 | IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status); |
780e87c2 JB |
469 | } |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
59ca9572 JB |
474 | static void iwl_mvm_rx_csum(struct iwl_mvm *mvm, |
475 | struct ieee80211_sta *sta, | |
780e87c2 | 476 | struct sk_buff *skb, |
59ca9572 | 477 | struct iwl_rx_packet *pkt) |
780e87c2 | 478 | { |
59ca9572 JB |
479 | struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; |
480 | ||
481 | if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { | |
482 | if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) { | |
483 | u16 hwsum = be16_to_cpu(desc->v3.raw_xsum); | |
484 | ||
485 | skb->ip_summed = CHECKSUM_COMPLETE; | |
486 | skb->csum = csum_unfold(~(__force __sum16)hwsum); | |
487 | } | |
488 | } else { | |
489 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
490 | struct iwl_mvm_vif *mvmvif; | |
491 | u16 flags = le16_to_cpu(desc->l3l4_flags); | |
492 | u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >> | |
493 | IWL_RX_L3_PROTO_POS); | |
494 | ||
495 | mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); | |
496 | ||
497 | if (mvmvif->features & NETIF_F_RXCSUM && | |
498 | flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK && | |
499 | (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK || | |
500 | l3_prot == IWL_RX_L3_TYPE_IPV6 || | |
501 | l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG)) | |
502 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
503 | } | |
780e87c2 JB |
504 | } |
505 | ||
a571f5f6 | 506 | /* |
5ab2ba93 SS |
507 | * returns true if a packet is a duplicate and should be dropped. |
508 | * Updates AMSDU PN tracking info | |
a571f5f6 | 509 | */ |
5ab2ba93 SS |
510 | static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue, |
511 | struct ieee80211_rx_status *rx_status, | |
512 | struct ieee80211_hdr *hdr, | |
513 | struct iwl_rx_mpdu_desc *desc) | |
a571f5f6 SS |
514 | { |
515 | struct iwl_mvm_sta *mvm_sta; | |
516 | struct iwl_mvm_rxq_dup_data *dup_data; | |
5ab2ba93 | 517 | u8 tid, sub_frame_idx; |
a571f5f6 SS |
518 | |
519 | if (WARN_ON(IS_ERR_OR_NULL(sta))) | |
520 | return false; | |
521 | ||
a571f5f6 SS |
522 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
523 | dup_data = &mvm_sta->dup_data[queue]; | |
524 | ||
525 | /* | |
526 | * Drop duplicate 802.11 retransmissions | |
527 | * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery") | |
528 | */ | |
529 | if (ieee80211_is_ctl(hdr->frame_control) || | |
530 | ieee80211_is_qos_nullfunc(hdr->frame_control) || | |
531 | is_multicast_ether_addr(hdr->addr1)) { | |
532 | rx_status->flag |= RX_FLAG_DUP_VALIDATED; | |
533 | return false; | |
534 | } | |
535 | ||
536 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
537 | /* frame has qos control */ | |
8f66e064 | 538 | tid = ieee80211_get_tid(hdr); |
a571f5f6 SS |
539 | else |
540 | tid = IWL_MAX_TID_COUNT; | |
541 | ||
542 | /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */ | |
18ead597 GBA |
543 | sub_frame_idx = desc->amsdu_info & |
544 | IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; | |
a571f5f6 SS |
545 | |
546 | if (unlikely(ieee80211_has_retry(hdr->frame_control) && | |
547 | dup_data->last_seq[tid] == hdr->seq_ctrl && | |
548 | dup_data->last_sub_frame[tid] >= sub_frame_idx)) | |
549 | return true; | |
550 | ||
5ab2ba93 SS |
551 | /* Allow same PN as the first subframe for following sub frames */ |
552 | if (dup_data->last_seq[tid] == hdr->seq_ctrl && | |
553 | sub_frame_idx > dup_data->last_sub_frame[tid] && | |
554 | desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) | |
555 | rx_status->flag |= RX_FLAG_ALLOW_SAME_PN; | |
556 | ||
a571f5f6 SS |
557 | dup_data->last_seq[tid] = hdr->seq_ctrl; |
558 | dup_data->last_sub_frame[tid] = sub_frame_idx; | |
559 | ||
560 | rx_status->flag |= RX_FLAG_DUP_VALIDATED; | |
561 | ||
562 | return false; | |
563 | } | |
564 | ||
74dd1764 SS |
565 | /* |
566 | * Returns true if sn2 - buffer_size < sn1 < sn2. | |
567 | * To be used only in order to compare reorder buffer head with NSSN. | |
568 | * We fully trust NSSN unless it is behind us due to reorder timeout. | |
569 | * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN. | |
570 | */ | |
571 | static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size) | |
572 | { | |
573 | return ieee80211_sn_less(sn1, sn2) && | |
574 | !ieee80211_sn_less(sn1, sn2 - buffer_size); | |
575 | } | |
576 | ||
3c514bf8 EG |
577 | static void iwl_mvm_sync_nssn(struct iwl_mvm *mvm, u8 baid, u16 nssn) |
578 | { | |
d829229e | 579 | if (IWL_MVM_USE_NSSN_SYNC) { |
5e1688ce JB |
580 | struct iwl_mvm_nssn_sync_data notif = { |
581 | .baid = baid, | |
582 | .nssn = nssn, | |
d829229e EG |
583 | }; |
584 | ||
5e1688ce JB |
585 | iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NSSN_SYNC, false, |
586 | ¬if, sizeof(notif)); | |
d829229e | 587 | } |
3c514bf8 EG |
588 | } |
589 | ||
0690405f SS |
590 | #define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10) |
591 | ||
ecd09ddc EG |
592 | enum iwl_mvm_release_flags { |
593 | IWL_MVM_RELEASE_SEND_RSS_SYNC = BIT(0), | |
594 | IWL_MVM_RELEASE_FROM_RSS_SYNC = BIT(1), | |
595 | }; | |
596 | ||
b915c101 SS |
597 | static void iwl_mvm_release_frames(struct iwl_mvm *mvm, |
598 | struct ieee80211_sta *sta, | |
599 | struct napi_struct *napi, | |
76f4a85e | 600 | struct iwl_mvm_baid_data *baid_data, |
b915c101 | 601 | struct iwl_mvm_reorder_buffer *reorder_buf, |
ecd09ddc | 602 | u16 nssn, u32 flags) |
b915c101 | 603 | { |
dfdddd92 JB |
604 | struct iwl_mvm_reorder_buf_entry *entries = |
605 | &baid_data->entries[reorder_buf->queue * | |
606 | baid_data->entries_per_queue]; | |
b915c101 SS |
607 | u16 ssn = reorder_buf->head_sn; |
608 | ||
0690405f SS |
609 | lockdep_assert_held(&reorder_buf->lock); |
610 | ||
ecd09ddc EG |
611 | /* |
612 | * We keep the NSSN not too far behind, if we are sync'ing it and it | |
613 | * is more than 2048 ahead of us, it must be behind us. Discard it. | |
614 | * This can happen if the queue that hit the 0 / 2048 seqno was lagging | |
615 | * behind and this queue already processed packets. The next if | |
616 | * would have caught cases where this queue would have processed less | |
617 | * than 64 packets, but it may have processed more than 64 packets. | |
618 | */ | |
619 | if ((flags & IWL_MVM_RELEASE_FROM_RSS_SYNC) && | |
620 | ieee80211_sn_less(nssn, ssn)) | |
621 | goto set_timer; | |
622 | ||
0690405f | 623 | /* ignore nssn smaller than head sn - this can happen due to timeout */ |
74dd1764 | 624 | if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size)) |
5351f9ab | 625 | goto set_timer; |
0690405f | 626 | |
74dd1764 | 627 | while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) { |
b915c101 | 628 | int index = ssn % reorder_buf->buf_size; |
dfdddd92 | 629 | struct sk_buff_head *skb_list = &entries[index].e.frames; |
b915c101 SS |
630 | struct sk_buff *skb; |
631 | ||
632 | ssn = ieee80211_sn_inc(ssn); | |
ecd09ddc EG |
633 | if ((flags & IWL_MVM_RELEASE_SEND_RSS_SYNC) && |
634 | (ssn == 2048 || ssn == 0)) | |
3c514bf8 | 635 | iwl_mvm_sync_nssn(mvm, baid_data->baid, ssn); |
b915c101 | 636 | |
5a710b86 SS |
637 | /* |
638 | * Empty the list. Will have more than one frame for A-MSDU. | |
639 | * Empty list is valid as well since nssn indicates frames were | |
640 | * received. | |
641 | */ | |
b915c101 SS |
642 | while ((skb = __skb_dequeue(skb_list))) { |
643 | iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, | |
644 | reorder_buf->queue, | |
544ab2a9 | 645 | sta); |
b915c101 SS |
646 | reorder_buf->num_stored--; |
647 | } | |
648 | } | |
649 | reorder_buf->head_sn = nssn; | |
0690405f | 650 | |
5351f9ab | 651 | set_timer: |
0690405f SS |
652 | if (reorder_buf->num_stored && !reorder_buf->removed) { |
653 | u16 index = reorder_buf->head_sn % reorder_buf->buf_size; | |
654 | ||
dfdddd92 | 655 | while (skb_queue_empty(&entries[index].e.frames)) |
0690405f SS |
656 | index = (index + 1) % reorder_buf->buf_size; |
657 | /* modify timer to match next frame's expiration time */ | |
658 | mod_timer(&reorder_buf->reorder_timer, | |
dfdddd92 | 659 | entries[index].e.reorder_time + 1 + |
0690405f SS |
660 | RX_REORDER_BUF_TIMEOUT_MQ); |
661 | } else { | |
662 | del_timer(&reorder_buf->reorder_timer); | |
663 | } | |
664 | } | |
665 | ||
8cef5344 | 666 | void iwl_mvm_reorder_timer_expired(struct timer_list *t) |
0690405f | 667 | { |
8cef5344 | 668 | struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer); |
dfdddd92 JB |
669 | struct iwl_mvm_baid_data *baid_data = |
670 | iwl_mvm_baid_data_from_reorder_buf(buf); | |
671 | struct iwl_mvm_reorder_buf_entry *entries = | |
672 | &baid_data->entries[buf->queue * baid_data->entries_per_queue]; | |
0690405f SS |
673 | int i; |
674 | u16 sn = 0, index = 0; | |
675 | bool expired = false; | |
9c36fd71 | 676 | bool cont = false; |
0690405f | 677 | |
9b856836 | 678 | spin_lock(&buf->lock); |
0690405f SS |
679 | |
680 | if (!buf->num_stored || buf->removed) { | |
9b856836 | 681 | spin_unlock(&buf->lock); |
0690405f SS |
682 | return; |
683 | } | |
684 | ||
685 | for (i = 0; i < buf->buf_size ; i++) { | |
686 | index = (buf->head_sn + i) % buf->buf_size; | |
687 | ||
dfdddd92 | 688 | if (skb_queue_empty(&entries[index].e.frames)) { |
9c36fd71 SS |
689 | /* |
690 | * If there is a hole and the next frame didn't expire | |
691 | * we want to break and not advance SN | |
692 | */ | |
693 | cont = false; | |
0690405f | 694 | continue; |
9c36fd71 | 695 | } |
dfdddd92 JB |
696 | if (!cont && |
697 | !time_after(jiffies, entries[index].e.reorder_time + | |
9c36fd71 | 698 | RX_REORDER_BUF_TIMEOUT_MQ)) |
0690405f | 699 | break; |
9c36fd71 | 700 | |
0690405f | 701 | expired = true; |
9c36fd71 SS |
702 | /* continue until next hole after this expired frames */ |
703 | cont = true; | |
0690405f SS |
704 | sn = ieee80211_sn_add(buf->head_sn, i + 1); |
705 | } | |
706 | ||
707 | if (expired) { | |
708 | struct ieee80211_sta *sta; | |
528a542a | 709 | struct iwl_mvm_sta *mvmsta; |
3f1c4c58 | 710 | u8 sta_id = baid_data->sta_id; |
0690405f SS |
711 | |
712 | rcu_read_lock(); | |
3f1c4c58 | 713 | sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]); |
528a542a EG |
714 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
715 | ||
0690405f | 716 | /* SN is set to the last expired frame + 1 */ |
35263a03 SS |
717 | IWL_DEBUG_HT(buf->mvm, |
718 | "Releasing expired frames for sta %u, sn %d\n", | |
3f1c4c58 | 719 | sta_id, sn); |
528a542a | 720 | iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif, |
3f1c4c58 | 721 | sta, baid_data->tid); |
3c514bf8 | 722 | iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data, |
ecd09ddc | 723 | buf, sn, IWL_MVM_RELEASE_SEND_RSS_SYNC); |
0690405f | 724 | rcu_read_unlock(); |
aeb8012c | 725 | } else { |
0690405f SS |
726 | /* |
727 | * If no frame expired and there are stored frames, index is now | |
728 | * pointing to the first unexpired frame - modify timer | |
729 | * accordingly to this frame. | |
730 | */ | |
731 | mod_timer(&buf->reorder_timer, | |
dfdddd92 | 732 | entries[index].e.reorder_time + |
0690405f SS |
733 | 1 + RX_REORDER_BUF_TIMEOUT_MQ); |
734 | } | |
9b856836 | 735 | spin_unlock(&buf->lock); |
b915c101 SS |
736 | } |
737 | ||
738 | static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue, | |
739 | struct iwl_mvm_delba_data *data) | |
740 | { | |
741 | struct iwl_mvm_baid_data *ba_data; | |
742 | struct ieee80211_sta *sta; | |
743 | struct iwl_mvm_reorder_buffer *reorder_buf; | |
744 | u8 baid = data->baid; | |
745 | ||
fd659f8e | 746 | if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid)) |
b915c101 SS |
747 | return; |
748 | ||
749 | rcu_read_lock(); | |
750 | ||
751 | ba_data = rcu_dereference(mvm->baid_map[baid]); | |
752 | if (WARN_ON_ONCE(!ba_data)) | |
753 | goto out; | |
754 | ||
755 | sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]); | |
756 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) | |
757 | goto out; | |
758 | ||
759 | reorder_buf = &ba_data->reorder_buf[queue]; | |
760 | ||
761 | /* release all frames that are in the reorder buffer to the stack */ | |
0690405f | 762 | spin_lock_bh(&reorder_buf->lock); |
76f4a85e | 763 | iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf, |
b915c101 | 764 | ieee80211_sn_add(reorder_buf->head_sn, |
3c514bf8 | 765 | reorder_buf->buf_size), |
ecd09ddc | 766 | 0); |
0690405f SS |
767 | spin_unlock_bh(&reorder_buf->lock); |
768 | del_timer_sync(&reorder_buf->reorder_timer); | |
b915c101 SS |
769 | |
770 | out: | |
771 | rcu_read_unlock(); | |
772 | } | |
773 | ||
c61b655a EG |
774 | static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm, |
775 | struct napi_struct *napi, | |
ecd09ddc EG |
776 | u8 baid, u16 nssn, int queue, |
777 | u32 flags) | |
c61b655a EG |
778 | { |
779 | struct ieee80211_sta *sta; | |
780 | struct iwl_mvm_reorder_buffer *reorder_buf; | |
781 | struct iwl_mvm_baid_data *ba_data; | |
782 | ||
783 | IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n", | |
784 | baid, nssn); | |
785 | ||
786 | if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID || | |
787 | baid >= ARRAY_SIZE(mvm->baid_map))) | |
788 | return; | |
789 | ||
790 | rcu_read_lock(); | |
791 | ||
792 | ba_data = rcu_dereference(mvm->baid_map[baid]); | |
2438d430 JB |
793 | if (!ba_data) { |
794 | WARN(!(flags & IWL_MVM_RELEASE_FROM_RSS_SYNC), | |
795 | "BAID %d not found in map\n", baid); | |
c61b655a | 796 | goto out; |
2438d430 | 797 | } |
c61b655a EG |
798 | |
799 | sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]); | |
800 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) | |
801 | goto out; | |
802 | ||
803 | reorder_buf = &ba_data->reorder_buf[queue]; | |
804 | ||
805 | spin_lock_bh(&reorder_buf->lock); | |
3c514bf8 | 806 | iwl_mvm_release_frames(mvm, sta, napi, ba_data, |
ecd09ddc | 807 | reorder_buf, nssn, flags); |
c61b655a EG |
808 | spin_unlock_bh(&reorder_buf->lock); |
809 | ||
810 | out: | |
811 | rcu_read_unlock(); | |
812 | } | |
813 | ||
814 | static void iwl_mvm_nssn_sync(struct iwl_mvm *mvm, | |
815 | struct napi_struct *napi, int queue, | |
816 | const struct iwl_mvm_nssn_sync_data *data) | |
817 | { | |
818 | iwl_mvm_release_frames_from_notif(mvm, napi, data->baid, | |
ecd09ddc EG |
819 | data->nssn, queue, |
820 | IWL_MVM_RELEASE_FROM_RSS_SYNC); | |
c61b655a EG |
821 | } |
822 | ||
823 | void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi, | |
824 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
94bb4481 SS |
825 | { |
826 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
827 | struct iwl_rxq_sync_notification *notif; | |
828 | struct iwl_mvm_internal_rxq_notif *internal_notif; | |
b570e5b0 | 829 | u32 len = iwl_rx_packet_payload_len(pkt); |
94bb4481 SS |
830 | |
831 | notif = (void *)pkt->data; | |
832 | internal_notif = (void *)notif->payload; | |
833 | ||
b570e5b0 JB |
834 | if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif), |
835 | "invalid notification size %d (%d)", | |
836 | len, (int)(sizeof(*notif) + sizeof(*internal_notif)))) | |
837 | return; | |
5e1688ce | 838 | len -= sizeof(*notif) + sizeof(*internal_notif); |
b570e5b0 | 839 | |
42116705 JB |
840 | if (internal_notif->sync && |
841 | mvm->queue_sync_cookie != internal_notif->cookie) { | |
842 | WARN_ONCE(1, "Received expired RX queue sync message\n"); | |
843 | return; | |
d0ff5d22 SS |
844 | } |
845 | ||
846 | switch (internal_notif->type) { | |
847 | case IWL_MVM_RXQ_EMPTY: | |
5e1688ce | 848 | WARN_ONCE(len, "invalid empty notification size %d", len); |
0636b938 | 849 | break; |
94bb4481 | 850 | case IWL_MVM_RXQ_NOTIF_DEL_BA: |
5e1688ce | 851 | if (WARN_ONCE(len != sizeof(struct iwl_mvm_delba_data), |
b570e5b0 | 852 | "invalid delba notification size %d (%d)", |
5e1688ce | 853 | len, (int)sizeof(struct iwl_mvm_delba_data))) |
b570e5b0 | 854 | break; |
b915c101 | 855 | iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data); |
94bb4481 | 856 | break; |
c61b655a | 857 | case IWL_MVM_RXQ_NSSN_SYNC: |
5e1688ce | 858 | if (WARN_ONCE(len != sizeof(struct iwl_mvm_nssn_sync_data), |
b570e5b0 | 859 | "invalid nssn sync notification size %d (%d)", |
5e1688ce | 860 | len, (int)sizeof(struct iwl_mvm_nssn_sync_data))) |
b570e5b0 | 861 | break; |
c61b655a EG |
862 | iwl_mvm_nssn_sync(mvm, napi, queue, |
863 | (void *)internal_notif->data); | |
864 | break; | |
94bb4481 SS |
865 | default: |
866 | WARN_ONCE(1, "Invalid identifier %d", internal_notif->type); | |
867 | } | |
42116705 | 868 | |
2f7a04c7 JB |
869 | if (internal_notif->sync) { |
870 | WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state), | |
871 | "queue sync: queue %d responded a second time!\n", | |
872 | queue); | |
873 | if (READ_ONCE(mvm->queue_sync_state) == 0) | |
874 | wake_up(&mvm->rx_sync_waitq); | |
875 | } | |
94bb4481 SS |
876 | } |
877 | ||
0968fbfa JB |
878 | static void iwl_mvm_oldsn_workaround(struct iwl_mvm *mvm, |
879 | struct ieee80211_sta *sta, int tid, | |
880 | struct iwl_mvm_reorder_buffer *buffer, | |
881 | u32 reorder, u32 gp2, int queue) | |
882 | { | |
883 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
884 | ||
885 | if (gp2 != buffer->consec_oldsn_ampdu_gp2) { | |
886 | /* we have a new (A-)MPDU ... */ | |
887 | ||
888 | /* | |
889 | * reset counter to 0 if we didn't have any oldsn in | |
890 | * the last A-MPDU (as detected by GP2 being identical) | |
891 | */ | |
892 | if (!buffer->consec_oldsn_prev_drop) | |
893 | buffer->consec_oldsn_drops = 0; | |
894 | ||
895 | /* either way, update our tracking state */ | |
896 | buffer->consec_oldsn_ampdu_gp2 = gp2; | |
897 | } else if (buffer->consec_oldsn_prev_drop) { | |
898 | /* | |
899 | * tracking state didn't change, and we had an old SN | |
900 | * indication before - do nothing in this case, we | |
901 | * already noted this one down and are waiting for the | |
902 | * next A-MPDU (by GP2) | |
903 | */ | |
904 | return; | |
905 | } | |
906 | ||
907 | /* return unless this MPDU has old SN */ | |
908 | if (!(reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)) | |
909 | return; | |
910 | ||
911 | /* update state */ | |
912 | buffer->consec_oldsn_prev_drop = 1; | |
913 | buffer->consec_oldsn_drops++; | |
914 | ||
915 | /* if limit is reached, send del BA and reset state */ | |
916 | if (buffer->consec_oldsn_drops == IWL_MVM_AMPDU_CONSEC_DROPS_DELBA) { | |
917 | IWL_WARN(mvm, | |
918 | "reached %d old SN frames from %pM on queue %d, stopping BA session on TID %d\n", | |
919 | IWL_MVM_AMPDU_CONSEC_DROPS_DELBA, | |
920 | sta->addr, queue, tid); | |
921 | ieee80211_stop_rx_ba_session(mvmsta->vif, BIT(tid), sta->addr); | |
922 | buffer->consec_oldsn_prev_drop = 0; | |
923 | buffer->consec_oldsn_drops = 0; | |
924 | } | |
925 | } | |
926 | ||
b915c101 SS |
927 | /* |
928 | * Returns true if the MPDU was buffered\dropped, false if it should be passed | |
929 | * to upper layer. | |
930 | */ | |
931 | static bool iwl_mvm_reorder(struct iwl_mvm *mvm, | |
932 | struct napi_struct *napi, | |
933 | int queue, | |
934 | struct ieee80211_sta *sta, | |
935 | struct sk_buff *skb, | |
936 | struct iwl_rx_mpdu_desc *desc) | |
937 | { | |
0968fbfa | 938 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); |
3619b088 | 939 | struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb); |
1f9788f3 | 940 | struct iwl_mvm_sta *mvm_sta; |
b915c101 SS |
941 | struct iwl_mvm_baid_data *baid_data; |
942 | struct iwl_mvm_reorder_buffer *buffer; | |
943 | struct sk_buff *tail; | |
944 | u32 reorder = le32_to_cpu(desc->reorder_data); | |
945 | bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU; | |
e7e14089 SS |
946 | bool last_subframe = |
947 | desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME; | |
8f66e064 | 948 | u8 tid = ieee80211_get_tid(hdr); |
b915c101 SS |
949 | u8 sub_frame_idx = desc->amsdu_info & |
950 | IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; | |
dfdddd92 | 951 | struct iwl_mvm_reorder_buf_entry *entries; |
b915c101 SS |
952 | int index; |
953 | u16 nssn, sn; | |
954 | u8 baid; | |
955 | ||
956 | baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >> | |
957 | IWL_RX_MPDU_REORDER_BAID_SHIFT; | |
958 | ||
8ec8ed43 JB |
959 | /* |
960 | * This also covers the case of receiving a Block Ack Request | |
961 | * outside a BA session; we'll pass it to mac80211 and that | |
962 | * then sends a delBA action frame. | |
81444538 JB |
963 | * This also covers pure monitor mode, in which case we won't |
964 | * have any BA sessions. | |
8ec8ed43 | 965 | */ |
b915c101 SS |
966 | if (baid == IWL_RX_REORDER_DATA_INVALID_BAID) |
967 | return false; | |
968 | ||
969 | /* no sta yet */ | |
417795a3 SS |
970 | if (WARN_ONCE(IS_ERR_OR_NULL(sta), |
971 | "Got valid BAID without a valid station assigned\n")) | |
b915c101 SS |
972 | return false; |
973 | ||
1f9788f3 LC |
974 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
975 | ||
9a73a7d2 SS |
976 | /* not a data packet or a bar */ |
977 | if (!ieee80211_is_back_req(hdr->frame_control) && | |
978 | (!ieee80211_is_data_qos(hdr->frame_control) || | |
979 | is_multicast_ether_addr(hdr->addr1))) | |
b915c101 SS |
980 | return false; |
981 | ||
982 | if (unlikely(!ieee80211_is_data_present(hdr->frame_control))) | |
983 | return false; | |
984 | ||
985 | baid_data = rcu_dereference(mvm->baid_map[baid]); | |
5d43eab6 | 986 | if (!baid_data) { |
a600852a EG |
987 | IWL_DEBUG_RX(mvm, |
988 | "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n", | |
989 | baid, reorder); | |
b915c101 | 990 | return false; |
5d43eab6 SS |
991 | } |
992 | ||
b915c101 SS |
993 | if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id, |
994 | "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n", | |
995 | baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id, | |
996 | tid)) | |
997 | return false; | |
998 | ||
999 | nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK; | |
1000 | sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >> | |
1001 | IWL_RX_MPDU_REORDER_SN_SHIFT; | |
1002 | ||
1003 | buffer = &baid_data->reorder_buf[queue]; | |
dfdddd92 | 1004 | entries = &baid_data->entries[queue * baid_data->entries_per_queue]; |
b915c101 | 1005 | |
0690405f SS |
1006 | spin_lock_bh(&buffer->lock); |
1007 | ||
5d43eab6 SS |
1008 | if (!buffer->valid) { |
1009 | if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) { | |
1010 | spin_unlock_bh(&buffer->lock); | |
1011 | return false; | |
1012 | } | |
1013 | buffer->valid = true; | |
1014 | } | |
1015 | ||
9a73a7d2 | 1016 | if (ieee80211_is_back_req(hdr->frame_control)) { |
3c514bf8 | 1017 | iwl_mvm_release_frames(mvm, sta, napi, baid_data, |
ecd09ddc | 1018 | buffer, nssn, 0); |
9a73a7d2 SS |
1019 | goto drop; |
1020 | } | |
1021 | ||
b915c101 SS |
1022 | /* |
1023 | * If there was a significant jump in the nssn - adjust. | |
1024 | * If the SN is smaller than the NSSN it might need to first go into | |
1025 | * the reorder buffer, in which case we just release up to it and the | |
5f90472c | 1026 | * rest of the function will take care of storing it and releasing up to |
3c514bf8 EG |
1027 | * the nssn. |
1028 | * This should not happen. This queue has been lagging and it should | |
1029 | * have been updated by a IWL_MVM_RXQ_NSSN_SYNC notification. Be nice | |
1030 | * and update the other queues. | |
b915c101 | 1031 | */ |
74dd1764 | 1032 | if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size, |
5f90472c SS |
1033 | buffer->buf_size) || |
1034 | !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) { | |
b915c101 SS |
1035 | u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn; |
1036 | ||
76f4a85e | 1037 | iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, |
ecd09ddc | 1038 | min_sn, IWL_MVM_RELEASE_SEND_RSS_SYNC); |
b915c101 SS |
1039 | } |
1040 | ||
0968fbfa JB |
1041 | iwl_mvm_oldsn_workaround(mvm, sta, tid, buffer, reorder, |
1042 | rx_status->device_timestamp, queue); | |
1043 | ||
b915c101 SS |
1044 | /* drop any oudated packets */ |
1045 | if (ieee80211_sn_less(sn, buffer->head_sn)) | |
1046 | goto drop; | |
1047 | ||
1048 | /* release immediately if allowed by nssn and no stored frames */ | |
1049 | if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) { | |
74dd1764 | 1050 | if (iwl_mvm_is_sn_less(buffer->head_sn, nssn, |
e7e14089 | 1051 | buffer->buf_size) && |
3c514bf8 EG |
1052 | (!amsdu || last_subframe)) { |
1053 | /* | |
1054 | * If we crossed the 2048 or 0 SN, notify all the | |
1055 | * queues. This is done in order to avoid having a | |
1056 | * head_sn that lags behind for too long. When that | |
1057 | * happens, we can get to a situation where the head_sn | |
1058 | * is within the interval [nssn - buf_size : nssn] | |
1059 | * which will make us think that the nssn is a packet | |
1060 | * that we already freed because of the reordering | |
1061 | * buffer and we will ignore it. So maintain the | |
1062 | * head_sn somewhat updated across all the queues: | |
1063 | * when it crosses 0 and 2048. | |
1064 | */ | |
1065 | if (sn == 2048 || sn == 0) | |
1066 | iwl_mvm_sync_nssn(mvm, baid, sn); | |
0690405f | 1067 | buffer->head_sn = nssn; |
3c514bf8 | 1068 | } |
b915c101 | 1069 | /* No need to update AMSDU last SN - we are moving the head */ |
0690405f | 1070 | spin_unlock_bh(&buffer->lock); |
b915c101 SS |
1071 | return false; |
1072 | } | |
1073 | ||
14a1f85b SS |
1074 | /* |
1075 | * release immediately if there are no stored frames, and the sn is | |
1076 | * equal to the head. | |
1077 | * This can happen due to reorder timer, where NSSN is behind head_sn. | |
1078 | * When we released everything, and we got the next frame in the | |
1079 | * sequence, according to the NSSN we can't release immediately, | |
1080 | * while technically there is no hole and we can move forward. | |
1081 | */ | |
1082 | if (!buffer->num_stored && sn == buffer->head_sn) { | |
3c514bf8 EG |
1083 | if (!amsdu || last_subframe) { |
1084 | if (sn == 2048 || sn == 0) | |
1085 | iwl_mvm_sync_nssn(mvm, baid, sn); | |
14a1f85b | 1086 | buffer->head_sn = ieee80211_sn_inc(buffer->head_sn); |
3c514bf8 | 1087 | } |
14a1f85b SS |
1088 | /* No need to update AMSDU last SN - we are moving the head */ |
1089 | spin_unlock_bh(&buffer->lock); | |
1090 | return false; | |
1091 | } | |
1092 | ||
b915c101 SS |
1093 | index = sn % buffer->buf_size; |
1094 | ||
1095 | /* | |
1096 | * Check if we already stored this frame | |
1097 | * As AMSDU is either received or not as whole, logic is simple: | |
1098 | * If we have frames in that position in the buffer and the last frame | |
1099 | * originated from AMSDU had a different SN then it is a retransmission. | |
1100 | * If it is the same SN then if the subframe index is incrementing it | |
1101 | * is the same AMSDU - otherwise it is a retransmission. | |
1102 | */ | |
dfdddd92 | 1103 | tail = skb_peek_tail(&entries[index].e.frames); |
b915c101 SS |
1104 | if (tail && !amsdu) |
1105 | goto drop; | |
1106 | else if (tail && (sn != buffer->last_amsdu || | |
1107 | buffer->last_sub_index >= sub_frame_idx)) | |
1108 | goto drop; | |
1109 | ||
1110 | /* put in reorder buffer */ | |
dfdddd92 | 1111 | __skb_queue_tail(&entries[index].e.frames, skb); |
b915c101 | 1112 | buffer->num_stored++; |
dfdddd92 | 1113 | entries[index].e.reorder_time = jiffies; |
0690405f | 1114 | |
b915c101 SS |
1115 | if (amsdu) { |
1116 | buffer->last_amsdu = sn; | |
1117 | buffer->last_sub_index = sub_frame_idx; | |
1118 | } | |
1119 | ||
e7e14089 SS |
1120 | /* |
1121 | * We cannot trust NSSN for AMSDU sub-frames that are not the last. | |
1122 | * The reason is that NSSN advances on the first sub-frame, and may | |
1123 | * cause the reorder buffer to advance before all the sub-frames arrive. | |
1124 | * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with | |
1125 | * SN 1. NSSN for first sub frame will be 3 with the result of driver | |
1126 | * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is | |
1127 | * already ahead and it will be dropped. | |
1128 | * If the last sub-frame is not on this queue - we will get frame | |
1129 | * release notification with up to date NSSN. | |
1130 | */ | |
1131 | if (!amsdu || last_subframe) | |
3c514bf8 | 1132 | iwl_mvm_release_frames(mvm, sta, napi, baid_data, |
ecd09ddc EG |
1133 | buffer, nssn, |
1134 | IWL_MVM_RELEASE_SEND_RSS_SYNC); | |
e7e14089 | 1135 | |
0690405f | 1136 | spin_unlock_bh(&buffer->lock); |
b915c101 SS |
1137 | return true; |
1138 | ||
1139 | drop: | |
1140 | kfree_skb(skb); | |
0690405f | 1141 | spin_unlock_bh(&buffer->lock); |
b915c101 SS |
1142 | return true; |
1143 | } | |
1144 | ||
5d43eab6 SS |
1145 | static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm, |
1146 | u32 reorder_data, u8 baid) | |
10b2b201 SS |
1147 | { |
1148 | unsigned long now = jiffies; | |
1149 | unsigned long timeout; | |
1150 | struct iwl_mvm_baid_data *data; | |
1151 | ||
1152 | rcu_read_lock(); | |
1153 | ||
1154 | data = rcu_dereference(mvm->baid_map[baid]); | |
5d43eab6 | 1155 | if (!data) { |
a600852a EG |
1156 | IWL_DEBUG_RX(mvm, |
1157 | "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n", | |
1158 | baid, reorder_data); | |
10b2b201 | 1159 | goto out; |
5d43eab6 | 1160 | } |
10b2b201 SS |
1161 | |
1162 | if (!data->timeout) | |
1163 | goto out; | |
1164 | ||
1165 | timeout = data->timeout; | |
1166 | /* | |
1167 | * Do not update last rx all the time to avoid cache bouncing | |
1168 | * between the rx queues. | |
1169 | * Update it every timeout. Worst case is the session will | |
1170 | * expire after ~ 2 * timeout, which doesn't matter that much. | |
1171 | */ | |
1172 | if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now)) | |
1173 | /* Update is atomic */ | |
1174 | data->last_rx = now; | |
1175 | ||
1176 | out: | |
1177 | rcu_read_unlock(); | |
1178 | } | |
1179 | ||
e4d72208 SS |
1180 | static void iwl_mvm_flip_address(u8 *addr) |
1181 | { | |
1182 | int i; | |
1183 | u8 mac_addr[ETH_ALEN]; | |
1184 | ||
1185 | for (i = 0; i < ETH_ALEN; i++) | |
1186 | mac_addr[i] = addr[ETH_ALEN - i - 1]; | |
1187 | ether_addr_copy(addr, mac_addr); | |
1188 | } | |
1189 | ||
bdf180c8 | 1190 | struct iwl_mvm_rx_phy_data { |
6721039d | 1191 | enum iwl_rx_phy_info_type info_type; |
bdf180c8 ST |
1192 | __le32 d0, d1, d2, d3; |
1193 | __le16 d4; | |
f1490546 JB |
1194 | |
1195 | u32 rate_n_flags; | |
1196 | u32 gp2_on_air_rise; | |
1197 | u16 phy_info; | |
1198 | u8 energy_a, energy_b; | |
1199 | u8 channel; | |
bdf180c8 ST |
1200 | }; |
1201 | ||
1202 | static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm, | |
1203 | struct iwl_mvm_rx_phy_data *phy_data, | |
bdf180c8 | 1204 | struct ieee80211_radiotap_he_mu *he_mu) |
dabf9844 | 1205 | { |
bdf180c8 ST |
1206 | u32 phy_data2 = le32_to_cpu(phy_data->d2); |
1207 | u32 phy_data3 = le32_to_cpu(phy_data->d3); | |
1208 | u16 phy_data4 = le16_to_cpu(phy_data->d4); | |
f1490546 | 1209 | u32 rate_n_flags = phy_data->rate_n_flags; |
dabf9844 | 1210 | |
bdf180c8 | 1211 | if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) { |
dabf9844 JB |
1212 | he_mu->flags1 |= |
1213 | cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN | | |
1214 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN); | |
1215 | ||
1216 | he_mu->flags1 |= | |
bdf180c8 ST |
1217 | le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU, |
1218 | phy_data4), | |
dabf9844 JB |
1219 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU); |
1220 | ||
bdf180c8 ST |
1221 | he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0, |
1222 | phy_data2); | |
1223 | he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1, | |
1224 | phy_data3); | |
1225 | he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2, | |
1226 | phy_data2); | |
1227 | he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3, | |
1228 | phy_data3); | |
dabf9844 JB |
1229 | } |
1230 | ||
bdf180c8 | 1231 | if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) && |
48c6ebc1 | 1232 | (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) { |
dabf9844 JB |
1233 | he_mu->flags1 |= |
1234 | cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN | | |
1235 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN); | |
1236 | ||
1237 | he_mu->flags2 |= | |
bdf180c8 ST |
1238 | le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU, |
1239 | phy_data4), | |
dabf9844 JB |
1240 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU); |
1241 | ||
bdf180c8 ST |
1242 | he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0, |
1243 | phy_data2); | |
1244 | he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1, | |
1245 | phy_data3); | |
1246 | he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2, | |
1247 | phy_data2); | |
1248 | he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3, | |
1249 | phy_data3); | |
dabf9844 JB |
1250 | } |
1251 | } | |
1252 | ||
ffe9d734 | 1253 | static void |
bdf180c8 | 1254 | iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data, |
ffe9d734 JB |
1255 | struct ieee80211_radiotap_he *he, |
1256 | struct ieee80211_radiotap_he_mu *he_mu, | |
1257 | struct ieee80211_rx_status *rx_status) | |
1258 | { | |
1259 | /* | |
1260 | * Unfortunately, we have to leave the mac80211 data | |
1261 | * incorrect for the case that we receive an HE-MU | |
1262 | * transmission and *don't* have the HE phy data (due | |
1263 | * to the bits being used for TSF). This shouldn't | |
1264 | * happen though as management frames where we need | |
1265 | * the TSF/timers are not be transmitted in HE-MU. | |
1266 | */ | |
bdf180c8 | 1267 | u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK); |
f1490546 | 1268 | u32 rate_n_flags = phy_data->rate_n_flags; |
48c6ebc1 | 1269 | u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK_V1; |
ffe9d734 JB |
1270 | u8 offs = 0; |
1271 | ||
1272 | rx_status->bw = RATE_INFO_BW_HE_RU; | |
1273 | ||
1274 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); | |
1275 | ||
1276 | switch (ru) { | |
1277 | case 0 ... 36: | |
1278 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26; | |
1279 | offs = ru; | |
1280 | break; | |
1281 | case 37 ... 52: | |
1282 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52; | |
1283 | offs = ru - 37; | |
1284 | break; | |
1285 | case 53 ... 60: | |
1286 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; | |
1287 | offs = ru - 53; | |
1288 | break; | |
1289 | case 61 ... 64: | |
1290 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242; | |
1291 | offs = ru - 61; | |
1292 | break; | |
1293 | case 65 ... 66: | |
1294 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484; | |
1295 | offs = ru - 65; | |
1296 | break; | |
1297 | case 67: | |
1298 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996; | |
1299 | break; | |
1300 | case 68: | |
1301 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996; | |
1302 | break; | |
1303 | } | |
1304 | he->data2 |= le16_encode_bits(offs, | |
1305 | IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET); | |
1306 | he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN | | |
1307 | IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN); | |
bdf180c8 | 1308 | if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80)) |
ffe9d734 JB |
1309 | he->data2 |= |
1310 | cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC); | |
1311 | ||
ffe9d734 JB |
1312 | #define CHECK_BW(bw) \ |
1313 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \ | |
74cf15cb JB |
1314 | RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \ |
1315 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \ | |
ffe9d734 | 1316 | RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS) |
74cf15cb JB |
1317 | CHECK_BW(20); |
1318 | CHECK_BW(40); | |
1319 | CHECK_BW(80); | |
1320 | CHECK_BW(160); | |
1321 | ||
1322 | if (he_mu) | |
ffe9d734 | 1323 | he_mu->flags2 |= |
48c6ebc1 | 1324 | le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1, |
ffe9d734 JB |
1325 | rate_n_flags), |
1326 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW); | |
48c6ebc1 | 1327 | else if (he_type == RATE_MCS_HE_TYPE_TRIG_V1) |
74cf15cb JB |
1328 | he->data6 |= |
1329 | cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) | | |
48c6ebc1 | 1330 | le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1, |
74cf15cb JB |
1331 | rate_n_flags), |
1332 | IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW); | |
ffe9d734 JB |
1333 | } |
1334 | ||
59b8cf0c | 1335 | static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm, |
bdf180c8 | 1336 | struct iwl_mvm_rx_phy_data *phy_data, |
59b8cf0c JB |
1337 | struct ieee80211_radiotap_he *he, |
1338 | struct ieee80211_radiotap_he_mu *he_mu, | |
ffe9d734 | 1339 | struct ieee80211_rx_status *rx_status, |
f1490546 | 1340 | int queue) |
59b8cf0c | 1341 | { |
6721039d | 1342 | switch (phy_data->info_type) { |
bdf180c8 ST |
1343 | case IWL_RX_PHY_INFO_TYPE_NONE: |
1344 | case IWL_RX_PHY_INFO_TYPE_CCK: | |
1345 | case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY: | |
bdf180c8 ST |
1346 | case IWL_RX_PHY_INFO_TYPE_HT: |
1347 | case IWL_RX_PHY_INFO_TYPE_VHT_SU: | |
1348 | case IWL_RX_PHY_INFO_TYPE_VHT_MU: | |
bdf180c8 ST |
1349 | return; |
1350 | case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: | |
1351 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN | | |
1352 | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN | | |
1353 | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN | | |
1354 | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN); | |
a197e6d1 | 1355 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1356 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1), |
1357 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1); | |
a197e6d1 | 1358 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1359 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2), |
1360 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2); | |
a197e6d1 | 1361 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1362 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3), |
1363 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3); | |
a197e6d1 | 1364 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1365 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4), |
1366 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4); | |
5a2abdca | 1367 | fallthrough; |
bdf180c8 ST |
1368 | case IWL_RX_PHY_INFO_TYPE_HE_SU: |
1369 | case IWL_RX_PHY_INFO_TYPE_HE_MU: | |
1370 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: | |
1371 | case IWL_RX_PHY_INFO_TYPE_HE_TB: | |
1372 | /* HE common */ | |
1373 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN | | |
bdf180c8 ST |
1374 | IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN | |
1375 | IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN); | |
1376 | he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN | | |
1377 | IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN | | |
1378 | IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN | | |
1379 | IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN); | |
1380 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1381 | IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK), | |
1382 | IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR); | |
7969454b ST |
1383 | if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB && |
1384 | phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) { | |
1385 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN); | |
1386 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
bdf180c8 | 1387 | IWL_RX_PHY_DATA0_HE_UPLINK), |
7969454b ST |
1388 | IEEE80211_RADIOTAP_HE_DATA3_UL_DL); |
1389 | } | |
bdf180c8 ST |
1390 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, |
1391 | IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM), | |
1392 | IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG); | |
bdf180c8 ST |
1393 | he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0, |
1394 | IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK), | |
1395 | IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD); | |
1396 | he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1397 | IWL_RX_PHY_DATA0_HE_PE_DISAMBIG), | |
1398 | IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG); | |
1399 | he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1, | |
1400 | IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK), | |
1401 | IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS); | |
1402 | he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1403 | IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK), | |
1404 | IEEE80211_RADIOTAP_HE_DATA6_TXOP); | |
1405 | he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1406 | IWL_RX_PHY_DATA0_HE_DOPPLER), | |
1407 | IEEE80211_RADIOTAP_HE_DATA6_DOPPLER); | |
1408 | break; | |
1409 | } | |
1410 | ||
2286a99c JB |
1411 | switch (phy_data->info_type) { |
1412 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: | |
1413 | case IWL_RX_PHY_INFO_TYPE_HE_MU: | |
1414 | case IWL_RX_PHY_INFO_TYPE_HE_SU: | |
1415 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN); | |
1416 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1417 | IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK), | |
1418 | IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE); | |
1419 | break; | |
1420 | default: | |
1421 | /* nothing here */ | |
1422 | break; | |
1423 | } | |
1424 | ||
6721039d | 1425 | switch (phy_data->info_type) { |
bdf180c8 | 1426 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: |
59b8cf0c | 1427 | he_mu->flags1 |= |
bdf180c8 ST |
1428 | le16_encode_bits(le16_get_bits(phy_data->d4, |
1429 | IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM), | |
59b8cf0c JB |
1430 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM); |
1431 | he_mu->flags1 |= | |
bdf180c8 ST |
1432 | le16_encode_bits(le16_get_bits(phy_data->d4, |
1433 | IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK), | |
59b8cf0c JB |
1434 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS); |
1435 | he_mu->flags2 |= | |
bdf180c8 ST |
1436 | le16_encode_bits(le16_get_bits(phy_data->d4, |
1437 | IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK), | |
1438 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW); | |
f1490546 | 1439 | iwl_mvm_decode_he_mu_ext(mvm, phy_data, he_mu); |
5a2abdca | 1440 | fallthrough; |
bdf180c8 | 1441 | case IWL_RX_PHY_INFO_TYPE_HE_MU: |
59b8cf0c | 1442 | he_mu->flags2 |= |
bdf180c8 ST |
1443 | le16_encode_bits(le32_get_bits(phy_data->d1, |
1444 | IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK), | |
1445 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS); | |
59b8cf0c | 1446 | he_mu->flags2 |= |
bdf180c8 ST |
1447 | le16_encode_bits(le32_get_bits(phy_data->d1, |
1448 | IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION), | |
1449 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP); | |
5a2abdca | 1450 | fallthrough; |
bdf180c8 ST |
1451 | case IWL_RX_PHY_INFO_TYPE_HE_TB: |
1452 | case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: | |
f1490546 | 1453 | iwl_mvm_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status); |
ffe9d734 | 1454 | break; |
bdf180c8 ST |
1455 | case IWL_RX_PHY_INFO_TYPE_HE_SU: |
1456 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN); | |
1457 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1458 | IWL_RX_PHY_DATA0_HE_BEAM_CHNG), | |
1459 | IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE); | |
1460 | break; | |
ffe9d734 JB |
1461 | default: |
1462 | /* nothing */ | |
1463 | break; | |
1464 | } | |
59b8cf0c JB |
1465 | } |
1466 | ||
c630b477 | 1467 | static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb, |
6721039d | 1468 | struct iwl_mvm_rx_phy_data *phy_data, |
f1490546 | 1469 | int queue) |
c630b477 SS |
1470 | { |
1471 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
c630b477 SS |
1472 | struct ieee80211_radiotap_he *he = NULL; |
1473 | struct ieee80211_radiotap_he_mu *he_mu = NULL; | |
f1490546 | 1474 | u32 rate_n_flags = phy_data->rate_n_flags; |
ce712478 | 1475 | u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; |
3d579204 | 1476 | u8 ltf; |
c630b477 SS |
1477 | static const struct ieee80211_radiotap_he known = { |
1478 | .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN | | |
1479 | IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN | | |
1480 | IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN | | |
1481 | IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN), | |
1482 | .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN | | |
1483 | IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN), | |
1484 | }; | |
1485 | static const struct ieee80211_radiotap_he_mu mu_known = { | |
1486 | .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN | | |
1487 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN | | |
1488 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN | | |
1489 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN), | |
dabf9844 JB |
1490 | .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN | |
1491 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN), | |
c630b477 | 1492 | }; |
f1490546 | 1493 | u16 phy_info = phy_data->phy_info; |
c630b477 SS |
1494 | |
1495 | he = skb_put_data(skb, &known, sizeof(known)); | |
c630b477 SS |
1496 | rx_status->flag |= RX_FLAG_RADIOTAP_HE; |
1497 | ||
6721039d ST |
1498 | if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU || |
1499 | phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) { | |
bdf180c8 | 1500 | he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known)); |
bdf180c8 | 1501 | rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU; |
c630b477 SS |
1502 | } |
1503 | ||
937c2652 ST |
1504 | /* report the AMPDU-EOF bit on single frames */ |
1505 | if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) { | |
1506 | rx_status->flag |= RX_FLAG_AMPDU_DETAILS; | |
1507 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; | |
1508 | if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF)) | |
1509 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; | |
c630b477 SS |
1510 | } |
1511 | ||
bdf180c8 | 1512 | if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) |
6721039d | 1513 | iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status, |
f1490546 | 1514 | queue); |
59b8cf0c | 1515 | |
c630b477 | 1516 | /* update aggregation data for monitor sake on default queue */ |
bdf180c8 ST |
1517 | if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) && |
1518 | (phy_info & IWL_RX_MPDU_PHY_AMPDU)) { | |
c630b477 SS |
1519 | bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE; |
1520 | ||
1521 | /* toggle is switched whenever new aggregation starts */ | |
937c2652 | 1522 | if (toggle_bit != mvm->ampdu_toggle) { |
c630b477 | 1523 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; |
6721039d | 1524 | if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF)) |
c630b477 SS |
1525 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; |
1526 | } | |
1527 | } | |
1528 | ||
ce712478 LC |
1529 | if (he_type == RATE_MCS_HE_TYPE_EXT_SU && |
1530 | rate_n_flags & RATE_MCS_HE_106T_MSK) { | |
c630b477 SS |
1531 | rx_status->bw = RATE_INFO_BW_HE_RU; |
1532 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; | |
1533 | } | |
dabf9844 | 1534 | |
ffe9d734 | 1535 | /* actually data is filled in mac80211 */ |
ce712478 LC |
1536 | if (he_type == RATE_MCS_HE_TYPE_SU || |
1537 | he_type == RATE_MCS_HE_TYPE_EXT_SU) | |
dabf9844 JB |
1538 | he->data1 |= |
1539 | cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); | |
1540 | ||
c630b477 SS |
1541 | #define CHECK_TYPE(F) \ |
1542 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \ | |
ce712478 | 1543 | (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS)) |
c630b477 SS |
1544 | |
1545 | CHECK_TYPE(SU); | |
1546 | CHECK_TYPE(EXT_SU); | |
1547 | CHECK_TYPE(MU); | |
1548 | CHECK_TYPE(TRIG); | |
1549 | ||
ce712478 | 1550 | he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS); |
c630b477 | 1551 | |
caf3216f | 1552 | if (rate_n_flags & RATE_MCS_BF_MSK) |
c630b477 SS |
1553 | he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF); |
1554 | ||
ce712478 | 1555 | switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >> |
c630b477 SS |
1556 | RATE_MCS_HE_GI_LTF_POS) { |
1557 | case 0: | |
ce712478 | 1558 | if (he_type == RATE_MCS_HE_TYPE_TRIG) |
93cc712a JB |
1559 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; |
1560 | else | |
1561 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; | |
ce712478 | 1562 | if (he_type == RATE_MCS_HE_TYPE_MU) |
de8da230 JB |
1563 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; |
1564 | else | |
1565 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X; | |
c630b477 SS |
1566 | break; |
1567 | case 1: | |
ce712478 | 1568 | if (he_type == RATE_MCS_HE_TYPE_TRIG) |
93cc712a JB |
1569 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; |
1570 | else | |
1571 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; | |
de8da230 | 1572 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; |
c630b477 SS |
1573 | break; |
1574 | case 2: | |
ce712478 | 1575 | if (he_type == RATE_MCS_HE_TYPE_TRIG) { |
93cc712a | 1576 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2; |
de8da230 | 1577 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; |
93cc712a JB |
1578 | } else { |
1579 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; | |
de8da230 | 1580 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; |
93cc712a | 1581 | } |
c630b477 SS |
1582 | break; |
1583 | case 3: | |
ce712478 | 1584 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2; |
de8da230 | 1585 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; |
c630b477 | 1586 | break; |
ce712478 LC |
1587 | case 4: |
1588 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; | |
1589 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; | |
1590 | break; | |
1591 | default: | |
1592 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN; | |
c630b477 SS |
1593 | } |
1594 | ||
bdf180c8 ST |
1595 | he->data5 |= le16_encode_bits(ltf, |
1596 | IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE); | |
c630b477 SS |
1597 | } |
1598 | ||
6721039d ST |
1599 | static void iwl_mvm_decode_lsig(struct sk_buff *skb, |
1600 | struct iwl_mvm_rx_phy_data *phy_data) | |
1601 | { | |
1602 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
1603 | struct ieee80211_radiotap_lsig *lsig; | |
1604 | ||
1605 | switch (phy_data->info_type) { | |
1606 | case IWL_RX_PHY_INFO_TYPE_HT: | |
1607 | case IWL_RX_PHY_INFO_TYPE_VHT_SU: | |
1608 | case IWL_RX_PHY_INFO_TYPE_VHT_MU: | |
1609 | case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: | |
1610 | case IWL_RX_PHY_INFO_TYPE_HE_SU: | |
1611 | case IWL_RX_PHY_INFO_TYPE_HE_MU: | |
1612 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: | |
1613 | case IWL_RX_PHY_INFO_TYPE_HE_TB: | |
1614 | lsig = skb_put(skb, sizeof(*lsig)); | |
1615 | lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN); | |
1616 | lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1, | |
1617 | IWL_RX_PHY_DATA1_LSIG_LEN_MASK), | |
1618 | IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH); | |
1619 | rx_status->flag |= RX_FLAG_RADIOTAP_LSIG; | |
1620 | break; | |
1621 | default: | |
1622 | break; | |
1623 | } | |
1624 | } | |
1625 | ||
65b9425c TM |
1626 | static inline u8 iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band) |
1627 | { | |
1628 | switch (phy_band) { | |
1629 | case PHY_BAND_24: | |
1630 | return NL80211_BAND_2GHZ; | |
1631 | case PHY_BAND_5: | |
1632 | return NL80211_BAND_5GHZ; | |
eae94cf8 LC |
1633 | case PHY_BAND_6: |
1634 | return NL80211_BAND_6GHZ; | |
65b9425c TM |
1635 | default: |
1636 | WARN_ONCE(1, "Unsupported phy band (%u)\n", phy_band); | |
1637 | return NL80211_BAND_5GHZ; | |
1638 | } | |
1639 | } | |
1640 | ||
e5d153ec EG |
1641 | struct iwl_rx_sta_csa { |
1642 | bool all_sta_unblocked; | |
1643 | struct ieee80211_vif *vif; | |
1644 | }; | |
1645 | ||
1646 | static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta) | |
1647 | { | |
1648 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1649 | struct iwl_rx_sta_csa *rx_sta_csa = data; | |
1650 | ||
1651 | if (mvmsta->vif != rx_sta_csa->vif) | |
1652 | return; | |
1653 | ||
1654 | if (mvmsta->disable_tx) | |
1655 | rx_sta_csa->all_sta_unblocked = false; | |
1656 | } | |
1657 | ||
f1490546 JB |
1658 | /* |
1659 | * Note: requires also rx_status->band to be prefilled, as well | |
1660 | * as phy_data (apart from phy_data->info_type) | |
1661 | */ | |
1662 | static void iwl_mvm_rx_fill_status(struct iwl_mvm *mvm, | |
1663 | struct sk_buff *skb, | |
1664 | struct iwl_mvm_rx_phy_data *phy_data, | |
1665 | int queue) | |
1666 | { | |
1667 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
1668 | u32 rate_n_flags = phy_data->rate_n_flags; | |
1669 | u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK); | |
1670 | u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK; | |
1671 | bool is_sgi; | |
1672 | ||
1673 | phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE; | |
1674 | ||
1675 | if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) | |
1676 | phy_data->info_type = | |
1677 | le32_get_bits(phy_data->d1, | |
1678 | IWL_RX_PHY_DATA1_INFO_TYPE_MASK); | |
1679 | ||
1680 | /* This may be overridden by iwl_mvm_rx_he() to HE_RU */ | |
1681 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
1682 | case RATE_MCS_CHAN_WIDTH_20: | |
1683 | break; | |
1684 | case RATE_MCS_CHAN_WIDTH_40: | |
1685 | rx_status->bw = RATE_INFO_BW_40; | |
1686 | break; | |
1687 | case RATE_MCS_CHAN_WIDTH_80: | |
1688 | rx_status->bw = RATE_INFO_BW_80; | |
1689 | break; | |
1690 | case RATE_MCS_CHAN_WIDTH_160: | |
1691 | rx_status->bw = RATE_INFO_BW_160; | |
1692 | break; | |
23dcee94 JB |
1693 | case RATE_MCS_CHAN_WIDTH_320: |
1694 | rx_status->bw = RATE_INFO_BW_320; | |
1695 | break; | |
f1490546 JB |
1696 | } |
1697 | ||
1698 | /* must be before L-SIG data */ | |
1699 | if (format == RATE_MCS_HE_MSK) | |
1700 | iwl_mvm_rx_he(mvm, skb, phy_data, queue); | |
1701 | ||
1702 | iwl_mvm_decode_lsig(skb, phy_data); | |
1703 | ||
1704 | rx_status->device_timestamp = phy_data->gp2_on_air_rise; | |
1705 | rx_status->freq = ieee80211_channel_to_frequency(phy_data->channel, | |
1706 | rx_status->band); | |
1707 | iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, | |
1708 | phy_data->energy_a, phy_data->energy_b); | |
1709 | ||
1710 | if (unlikely(mvm->monitor_on)) | |
1711 | iwl_mvm_add_rtap_sniffer_config(mvm, skb); | |
1712 | ||
1713 | is_sgi = format == RATE_MCS_HE_MSK ? | |
1714 | iwl_he_is_sgi(rate_n_flags) : | |
1715 | rate_n_flags & RATE_MCS_SGI_MSK; | |
1716 | ||
1717 | if (!(format == RATE_MCS_CCK_MSK) && is_sgi) | |
1718 | rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; | |
1719 | ||
1720 | if (rate_n_flags & RATE_MCS_LDPC_MSK) | |
1721 | rx_status->enc_flags |= RX_ENC_FLAG_LDPC; | |
1722 | ||
3d579204 JB |
1723 | switch (format) { |
1724 | case RATE_MCS_VHT_MSK: | |
1725 | rx_status->encoding = RX_ENC_VHT; | |
1726 | break; | |
1727 | case RATE_MCS_HE_MSK: | |
1728 | rx_status->encoding = RX_ENC_HE; | |
1729 | rx_status->he_dcm = | |
1730 | !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK); | |
1731 | break; | |
23dcee94 JB |
1732 | case RATE_MCS_EHT_MSK: |
1733 | rx_status->encoding = RX_ENC_EHT; | |
1734 | break; | |
3d579204 JB |
1735 | } |
1736 | ||
f1490546 JB |
1737 | switch (format) { |
1738 | case RATE_MCS_HT_MSK: | |
1739 | rx_status->encoding = RX_ENC_HT; | |
1740 | rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags); | |
1741 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; | |
1742 | break; | |
1743 | case RATE_MCS_VHT_MSK: | |
3d579204 | 1744 | case RATE_MCS_HE_MSK: |
23dcee94 | 1745 | case RATE_MCS_EHT_MSK: |
f1490546 | 1746 | rx_status->nss = |
3d579204 | 1747 | u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1; |
f1490546 | 1748 | rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK; |
f1490546 | 1749 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; |
f1490546 JB |
1750 | break; |
1751 | default: { | |
1752 | int rate = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags, | |
1753 | rx_status->band); | |
1754 | ||
1755 | rx_status->rate_idx = rate; | |
1756 | ||
b79d2219 LC |
1757 | if ((rate < 0 || rate > 0xFF) && net_ratelimit()) { |
1758 | IWL_ERR(mvm, "Invalid rate flags 0x%x, band %d,\n", | |
1759 | rate_n_flags, rx_status->band); | |
f1490546 | 1760 | rx_status->rate_idx = 0; |
b79d2219 LC |
1761 | } |
1762 | ||
f1490546 JB |
1763 | break; |
1764 | } | |
1765 | } | |
1766 | } | |
1767 | ||
780e87c2 JB |
1768 | void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi, |
1769 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
1770 | { | |
1771 | struct ieee80211_rx_status *rx_status; | |
1772 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1773 | struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; | |
18ead597 | 1774 | struct ieee80211_hdr *hdr; |
b8aba27c | 1775 | u32 len; |
efc0ec5a | 1776 | u32 pkt_len = iwl_rx_packet_payload_len(pkt); |
780e87c2 JB |
1777 | struct ieee80211_sta *sta = NULL; |
1778 | struct sk_buff *skb; | |
f1490546 | 1779 | u8 crypt_len = 0; |
18ead597 | 1780 | size_t desc_size; |
f1490546 | 1781 | struct iwl_mvm_rx_phy_data phy_data = {}; |
ce712478 | 1782 | u32 format; |
780e87c2 | 1783 | |
364a1ab9 SM |
1784 | if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) |
1785 | return; | |
1786 | ||
b8aba27c JB |
1787 | if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) |
1788 | desc_size = sizeof(*desc); | |
1789 | else | |
1790 | desc_size = IWL_RX_DESC_SIZE_V1; | |
1791 | ||
1792 | if (unlikely(pkt_len < desc_size)) { | |
1793 | IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n"); | |
1794 | return; | |
1795 | } | |
1796 | ||
3681021f | 1797 | if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { |
f1490546 JB |
1798 | phy_data.rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags); |
1799 | phy_data.channel = desc->v3.channel; | |
1800 | phy_data.gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise); | |
1801 | phy_data.energy_a = desc->v3.energy_a; | |
1802 | phy_data.energy_b = desc->v3.energy_b; | |
6721039d ST |
1803 | |
1804 | phy_data.d0 = desc->v3.phy_data0; | |
1805 | phy_data.d1 = desc->v3.phy_data1; | |
1806 | phy_data.d2 = desc->v3.phy_data2; | |
1807 | phy_data.d3 = desc->v3.phy_data3; | |
18ead597 | 1808 | } else { |
f1490546 JB |
1809 | phy_data.rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags); |
1810 | phy_data.channel = desc->v1.channel; | |
1811 | phy_data.gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise); | |
1812 | phy_data.energy_a = desc->v1.energy_a; | |
1813 | phy_data.energy_b = desc->v1.energy_b; | |
6721039d ST |
1814 | |
1815 | phy_data.d0 = desc->v1.phy_data0; | |
1816 | phy_data.d1 = desc->v1.phy_data1; | |
1817 | phy_data.d2 = desc->v1.phy_data2; | |
1818 | phy_data.d3 = desc->v1.phy_data3; | |
18ead597 | 1819 | } |
f1490546 | 1820 | |
ce712478 LC |
1821 | if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, |
1822 | REPLY_RX_MPDU_CMD, 0) < 4) { | |
f1490546 | 1823 | phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags); |
ce712478 | 1824 | IWL_DEBUG_DROP(mvm, "Got old format rate, converting. New rate: 0x%x\n", |
f1490546 | 1825 | phy_data.rate_n_flags); |
ce712478 | 1826 | } |
f1490546 JB |
1827 | |
1828 | format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK; | |
18ead597 | 1829 | |
b8aba27c | 1830 | len = le16_to_cpu(desc->mpdu_len); |
6721039d | 1831 | |
b8aba27c | 1832 | if (unlikely(len + desc_size > pkt_len)) { |
efc0ec5a JB |
1833 | IWL_DEBUG_DROP(mvm, "FW lied about packet len\n"); |
1834 | return; | |
1835 | } | |
1836 | ||
f1490546 | 1837 | phy_data.phy_info = le16_to_cpu(desc->phy_info); |
b8aba27c JB |
1838 | phy_data.d4 = desc->phy_data4; |
1839 | ||
18ead597 | 1840 | hdr = (void *)(pkt->data + desc_size); |
780e87c2 JB |
1841 | /* Dont use dev_alloc_skb(), we'll have enough headroom once |
1842 | * ieee80211_hdr pulled. | |
1843 | */ | |
1844 | skb = alloc_skb(128, GFP_ATOMIC); | |
1845 | if (!skb) { | |
1846 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
1847 | return; | |
1848 | } | |
1849 | ||
1e5b7750 JB |
1850 | if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) { |
1851 | /* | |
1852 | * If the device inserted padding it means that (it thought) | |
1853 | * the 802.11 header wasn't a multiple of 4 bytes long. In | |
1854 | * this case, reserve two bytes at the start of the SKB to | |
1855 | * align the payload properly in case we end up copying it. | |
1856 | */ | |
1857 | skb_reserve(skb, 2); | |
1858 | } | |
1859 | ||
780e87c2 JB |
1860 | rx_status = IEEE80211_SKB_RXCB(skb); |
1861 | ||
780e87c2 JB |
1862 | /* |
1863 | * Keep packets with CRC errors (and with overrun) for monitor mode | |
1864 | * (otherwise the firmware discards them) but mark them as bad. | |
1865 | */ | |
e365e7de JB |
1866 | if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) || |
1867 | !(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) { | |
780e87c2 | 1868 | IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", |
e365e7de | 1869 | le32_to_cpu(desc->status)); |
780e87c2 JB |
1870 | rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; |
1871 | } | |
f1490546 | 1872 | |
fbe41127 | 1873 | /* set the preamble flag if appropriate */ |
ce712478 | 1874 | if (format == RATE_MCS_CCK_MSK && |
f1490546 | 1875 | phy_data.phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE) |
7fdd69c5 | 1876 | rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE; |
fbe41127 | 1877 | |
f1490546 | 1878 | if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) { |
18ead597 GBA |
1879 | u64 tsf_on_air_rise; |
1880 | ||
286ca8eb | 1881 | if (mvm->trans->trans_cfg->device_family >= |
3681021f | 1882 | IWL_DEVICE_FAMILY_AX210) |
18ead597 GBA |
1883 | tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise); |
1884 | else | |
1885 | tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise); | |
1886 | ||
1887 | rx_status->mactime = tsf_on_air_rise; | |
fbe41127 SS |
1888 | /* TSF as indicated by the firmware is at INA time */ |
1889 | rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; | |
bd6fc655 LK |
1890 | } |
1891 | ||
65b9425c TM |
1892 | if (iwl_mvm_is_band_in_rx_supported(mvm)) { |
1893 | u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx); | |
1894 | ||
1895 | rx_status->band = iwl_mvm_nl80211_band_from_rx_msdu(band); | |
1896 | } else { | |
f1490546 | 1897 | rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ : |
65b9425c TM |
1898 | NL80211_BAND_2GHZ; |
1899 | } | |
fbe41127 SS |
1900 | |
1901 | /* update aggregation data for monitor sake on default queue */ | |
f1490546 JB |
1902 | if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) { |
1903 | bool toggle_bit; | |
fbe41127 | 1904 | |
f1490546 | 1905 | toggle_bit = phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE; |
fbe41127 | 1906 | rx_status->flag |= RX_FLAG_AMPDU_DETAILS; |
5213e8a8 JB |
1907 | /* |
1908 | * Toggle is switched whenever new aggregation starts. Make | |
1909 | * sure ampdu_reference is never 0 so we can later use it to | |
1910 | * see if the frame was really part of an A-MPDU or not. | |
1911 | */ | |
fbe41127 SS |
1912 | if (toggle_bit != mvm->ampdu_toggle) { |
1913 | mvm->ampdu_ref++; | |
5213e8a8 JB |
1914 | if (mvm->ampdu_ref == 0) |
1915 | mvm->ampdu_ref++; | |
fbe41127 SS |
1916 | mvm->ampdu_toggle = toggle_bit; |
1917 | } | |
1f7698ab | 1918 | rx_status->ampdu_reference = mvm->ampdu_ref; |
fbe41127 | 1919 | } |
780e87c2 JB |
1920 | |
1921 | rcu_read_lock(); | |
1922 | ||
e365e7de JB |
1923 | if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) { |
1924 | u8 id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID); | |
780e87c2 | 1925 | |
be9ae34e | 1926 | if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) { |
780e87c2 JB |
1927 | sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); |
1928 | if (IS_ERR(sta)) | |
1929 | sta = NULL; | |
1930 | } | |
1931 | } else if (!is_multicast_ether_addr(hdr->addr2)) { | |
1932 | /* | |
1933 | * This is fine since we prevent two stations with the same | |
1934 | * address from being added. | |
1935 | */ | |
1936 | sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); | |
1937 | } | |
1938 | ||
f1490546 | 1939 | if (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_data.phy_info, desc, |
b1fdc250 JB |
1940 | le32_to_cpu(pkt->len_n_flags), queue, |
1941 | &crypt_len)) { | |
1942 | kfree_skb(skb); | |
1943 | goto out; | |
1944 | } | |
1945 | ||
f1490546 JB |
1946 | iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue); |
1947 | ||
780e87c2 JB |
1948 | if (sta) { |
1949 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
d3a108a4 AO |
1950 | struct ieee80211_vif *tx_blocked_vif = |
1951 | rcu_dereference(mvm->csa_tx_blocked_vif); | |
10b2b201 SS |
1952 | u8 baid = (u8)((le32_to_cpu(desc->reorder_data) & |
1953 | IWL_RX_MPDU_REORDER_BAID_MASK) >> | |
1954 | IWL_RX_MPDU_REORDER_BAID_SHIFT); | |
6c042d75 SS |
1955 | struct iwl_fw_dbg_trigger_tlv *trig; |
1956 | struct ieee80211_vif *vif = mvmsta->vif; | |
780e87c2 | 1957 | |
7d9d0d56 LC |
1958 | if (!mvm->tcm.paused && len >= sizeof(*hdr) && |
1959 | !is_multicast_ether_addr(hdr->addr1) && | |
1960 | ieee80211_is_data(hdr->frame_control) && | |
1961 | time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD)) | |
1962 | schedule_delayed_work(&mvm->tcm.work, 0); | |
1963 | ||
780e87c2 JB |
1964 | /* |
1965 | * We have tx blocked stations (with CS bit). If we heard | |
1966 | * frames from a blocked station on a new channel we can | |
1967 | * TX to it again. | |
1968 | */ | |
6c042d75 | 1969 | if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) { |
d3a108a4 AO |
1970 | struct iwl_mvm_vif *mvmvif = |
1971 | iwl_mvm_vif_from_mac80211(tx_blocked_vif); | |
e5d153ec EG |
1972 | struct iwl_rx_sta_csa rx_sta_csa = { |
1973 | .all_sta_unblocked = true, | |
1974 | .vif = tx_blocked_vif, | |
1975 | }; | |
d3a108a4 AO |
1976 | |
1977 | if (mvmvif->csa_target_freq == rx_status->freq) | |
1978 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, | |
1979 | false); | |
e5d153ec EG |
1980 | ieee80211_iterate_stations_atomic(mvm->hw, |
1981 | iwl_mvm_rx_get_sta_block_tx, | |
1982 | &rx_sta_csa); | |
1983 | ||
1984 | if (rx_sta_csa.all_sta_unblocked) { | |
1985 | RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); | |
1986 | /* Unblock BCAST / MCAST station */ | |
1987 | iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); | |
1988 | cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); | |
1989 | } | |
d3a108a4 | 1990 | } |
780e87c2 | 1991 | |
ecaf71de | 1992 | rs_update_last_rssi(mvm, mvmsta, rx_status); |
780e87c2 | 1993 | |
6c042d75 SS |
1994 | trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, |
1995 | ieee80211_vif_to_wdev(vif), | |
1996 | FW_DBG_TRIGGER_RSSI); | |
1997 | ||
1998 | if (trig && ieee80211_is_beacon(hdr->frame_control)) { | |
780e87c2 | 1999 | struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; |
780e87c2 JB |
2000 | s32 rssi; |
2001 | ||
780e87c2 JB |
2002 | rssi_trig = (void *)trig->data; |
2003 | rssi = le32_to_cpu(rssi_trig->rssi); | |
2004 | ||
6c042d75 | 2005 | if (rx_status->signal < rssi) |
7174beb6 JB |
2006 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, |
2007 | NULL); | |
780e87c2 JB |
2008 | } |
2009 | ||
780e87c2 | 2010 | if (ieee80211_is_data(hdr->frame_control)) |
59ca9572 | 2011 | iwl_mvm_rx_csum(mvm, sta, skb, pkt); |
a571f5f6 | 2012 | |
5ab2ba93 | 2013 | if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) { |
a571f5f6 | 2014 | kfree_skb(skb); |
cb2de6bb | 2015 | goto out; |
a571f5f6 | 2016 | } |
62d23403 SS |
2017 | |
2018 | /* | |
2019 | * Our hardware de-aggregates AMSDUs but copies the mac header | |
2020 | * as it to the de-aggregated MPDUs. We need to turn off the | |
2021 | * AMSDU bit in the QoS control ourselves. | |
9dfa2151 | 2022 | * In addition, HW reverses addr3 and addr4 - reverse it back. |
62d23403 SS |
2023 | */ |
2024 | if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) && | |
2025 | !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) { | |
2026 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
2027 | ||
2028 | *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; | |
a56cb4f0 | 2029 | |
286ca8eb | 2030 | if (mvm->trans->trans_cfg->device_family == |
e4d72208 SS |
2031 | IWL_DEVICE_FAMILY_9000) { |
2032 | iwl_mvm_flip_address(hdr->addr3); | |
9dfa2151 | 2033 | |
e4d72208 SS |
2034 | if (ieee80211_has_a4(hdr->frame_control)) |
2035 | iwl_mvm_flip_address(hdr->addr4); | |
9dfa2151 | 2036 | } |
62d23403 | 2037 | } |
5d43eab6 SS |
2038 | if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) { |
2039 | u32 reorder_data = le32_to_cpu(desc->reorder_data); | |
2040 | ||
2041 | iwl_mvm_agg_rx_received(mvm, reorder_data, baid); | |
2042 | } | |
780e87c2 JB |
2043 | } |
2044 | ||
fbe41127 SS |
2045 | /* management stuff on default queue */ |
2046 | if (!queue) { | |
2047 | if (unlikely((ieee80211_is_beacon(hdr->frame_control) || | |
2048 | ieee80211_is_probe_resp(hdr->frame_control)) && | |
2049 | mvm->sched_scan_pass_all == | |
2050 | SCHED_SCAN_PASS_ALL_ENABLED)) | |
2051 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND; | |
2052 | ||
2053 | if (unlikely(ieee80211_is_beacon(hdr->frame_control) || | |
2054 | ieee80211_is_probe_resp(hdr->frame_control))) | |
9285ec4c | 2055 | rx_status->boottime_ns = ktime_get_boottime_ns(); |
fbe41127 | 2056 | } |
780e87c2 | 2057 | |
de1887c0 LC |
2058 | if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) { |
2059 | kfree_skb(skb); | |
2060 | goto out; | |
2061 | } | |
2062 | ||
b915c101 | 2063 | if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc)) |
9bf13bee | 2064 | iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, |
544ab2a9 | 2065 | sta); |
cb2de6bb | 2066 | out: |
f5e28eac | 2067 | rcu_read_unlock(); |
780e87c2 | 2068 | } |
585a6fcc | 2069 | |
d47cdb88 JB |
2070 | void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi, |
2071 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
bf9dfeda ST |
2072 | { |
2073 | struct ieee80211_rx_status *rx_status; | |
2074 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2075 | struct iwl_rx_no_data *desc = (void *)pkt->data; | |
1174e8fc MG |
2076 | u32 rssi; |
2077 | u32 info_type; | |
bf9dfeda ST |
2078 | struct ieee80211_sta *sta = NULL; |
2079 | struct sk_buff *skb; | |
1174e8fc | 2080 | struct iwl_mvm_rx_phy_data phy_data; |
f1490546 | 2081 | u32 format; |
ce712478 | 2082 | |
1174e8fc MG |
2083 | if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) |
2084 | return; | |
2085 | ||
2086 | if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(struct iwl_rx_no_data))) | |
2087 | return; | |
2088 | ||
2089 | rssi = le32_to_cpu(desc->rssi); | |
2090 | info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK; | |
2091 | phy_data.d0 = desc->phy_info[0]; | |
2092 | phy_data.d1 = desc->phy_info[1]; | |
2093 | phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD; | |
2094 | phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time); | |
2095 | phy_data.rate_n_flags = le32_to_cpu(desc->rate); | |
2096 | phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK); | |
2097 | phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK); | |
2098 | phy_data.channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK); | |
2099 | ||
ce712478 LC |
2100 | if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP, |
2101 | RX_NO_DATA_NOTIF, 0) < 2) { | |
2102 | IWL_DEBUG_DROP(mvm, "Got an old rate format. Old rate: 0x%x\n", | |
f1490546 JB |
2103 | phy_data.rate_n_flags); |
2104 | phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags); | |
ce712478 | 2105 | IWL_DEBUG_DROP(mvm, " Rate after conversion to the new format: 0x%x\n", |
f1490546 | 2106 | phy_data.rate_n_flags); |
ce712478 | 2107 | } |
f1490546 JB |
2108 | |
2109 | format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK; | |
bf9dfeda | 2110 | |
bf9dfeda ST |
2111 | /* Dont use dev_alloc_skb(), we'll have enough headroom once |
2112 | * ieee80211_hdr pulled. | |
2113 | */ | |
2114 | skb = alloc_skb(128, GFP_ATOMIC); | |
2115 | if (!skb) { | |
2116 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
2117 | return; | |
2118 | } | |
2119 | ||
2120 | rx_status = IEEE80211_SKB_RXCB(skb); | |
2121 | ||
2122 | /* 0-length PSDU */ | |
2123 | rx_status->flag |= RX_FLAG_NO_PSDU; | |
d47cdb88 JB |
2124 | |
2125 | switch (info_type) { | |
2126 | case RX_NO_DATA_INFO_TYPE_NDP: | |
2127 | rx_status->zero_length_psdu_type = | |
2128 | IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING; | |
2129 | break; | |
2130 | case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED: | |
2131 | case RX_NO_DATA_INFO_TYPE_HE_TB_UNMATCHED: | |
2132 | rx_status->zero_length_psdu_type = | |
2133 | IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED; | |
2134 | break; | |
2135 | default: | |
2136 | rx_status->zero_length_psdu_type = | |
2137 | IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR; | |
2138 | break; | |
2139 | } | |
bf9dfeda | 2140 | |
f1490546 | 2141 | rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ : |
bf9dfeda | 2142 | NL80211_BAND_2GHZ; |
bf9dfeda | 2143 | |
f1490546 | 2144 | iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue); |
ce712478 | 2145 | |
f1490546 JB |
2146 | /* |
2147 | * Override the nss from the rx_vec since the rate_n_flags has | |
2148 | * only 2 bits for the nss which gives a max of 4 ss but there | |
2149 | * may be up to 8 spatial streams. | |
2150 | */ | |
2151 | switch (format) { | |
2152 | case RATE_MCS_VHT_MSK: | |
c97781d1 ST |
2153 | rx_status->nss = |
2154 | le32_get_bits(desc->rx_vec[0], | |
2155 | RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1; | |
f1490546 JB |
2156 | break; |
2157 | case RATE_MCS_HE_MSK: | |
c97781d1 ST |
2158 | rx_status->nss = |
2159 | le32_get_bits(desc->rx_vec[0], | |
2160 | RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1; | |
f1490546 | 2161 | break; |
bf9dfeda ST |
2162 | } |
2163 | ||
f1490546 | 2164 | rcu_read_lock(); |
ed714460 | 2165 | ieee80211_rx_napi(mvm->hw, sta, skb, napi); |
bf9dfeda ST |
2166 | rcu_read_unlock(); |
2167 | } | |
c61b655a | 2168 | |
a338384b | 2169 | void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi, |
585a6fcc SS |
2170 | struct iwl_rx_cmd_buffer *rxb, int queue) |
2171 | { | |
a338384b SS |
2172 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
2173 | struct iwl_frame_release *release = (void *)pkt->data; | |
a338384b | 2174 | |
1e1a58be JB |
2175 | if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release))) |
2176 | return; | |
2177 | ||
c61b655a | 2178 | iwl_mvm_release_frames_from_notif(mvm, napi, release->baid, |
ecd09ddc EG |
2179 | le16_to_cpu(release->nssn), |
2180 | queue, 0); | |
585a6fcc | 2181 | } |
fe69b7d1 JB |
2182 | |
2183 | void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi, | |
2184 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
2185 | { | |
2186 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2187 | struct iwl_bar_frame_release *release = (void *)pkt->data; | |
2188 | unsigned int baid = le32_get_bits(release->ba_info, | |
2189 | IWL_BAR_FRAME_RELEASE_BAID_MASK); | |
2190 | unsigned int nssn = le32_get_bits(release->ba_info, | |
2191 | IWL_BAR_FRAME_RELEASE_NSSN_MASK); | |
2192 | unsigned int sta_id = le32_get_bits(release->sta_tid, | |
2193 | IWL_BAR_FRAME_RELEASE_STA_MASK); | |
2194 | unsigned int tid = le32_get_bits(release->sta_tid, | |
2195 | IWL_BAR_FRAME_RELEASE_TID_MASK); | |
2196 | struct iwl_mvm_baid_data *baid_data; | |
2197 | ||
1e1a58be JB |
2198 | if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release))) |
2199 | return; | |
2200 | ||
fe69b7d1 JB |
2201 | if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID || |
2202 | baid >= ARRAY_SIZE(mvm->baid_map))) | |
2203 | return; | |
2204 | ||
2205 | rcu_read_lock(); | |
2206 | baid_data = rcu_dereference(mvm->baid_map[baid]); | |
2207 | if (!baid_data) { | |
2208 | IWL_DEBUG_RX(mvm, | |
2209 | "Got valid BAID %d but not allocated, invalid BAR release!\n", | |
2210 | baid); | |
2211 | goto out; | |
2212 | } | |
2213 | ||
2214 | if (WARN(tid != baid_data->tid || sta_id != baid_data->sta_id, | |
2215 | "baid 0x%x is mapped to sta:%d tid:%d, but BAR release received for sta:%d tid:%d\n", | |
2216 | baid, baid_data->sta_id, baid_data->tid, sta_id, | |
2217 | tid)) | |
2218 | goto out; | |
2219 | ||
2220 | iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue, 0); | |
2221 | out: | |
2222 | rcu_read_unlock(); | |
2223 | } |