Commit | Line | Data |
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8e99ea8d JB |
1 | // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
2 | /* | |
3 | * Copyright (C) 2012-2014, 2018-2020 Intel Corporation | |
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)) { | |
72 | IWL_ERR(mvm, | |
73 | "expected hw-decrypted unicast frame for station\n"); | |
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); | |
124 | ||
4b40571e | 125 | if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) { |
1e5b7750 | 126 | len -= 2; |
e29cc6b9 | 127 | pad_len = 2; |
4b40571e | 128 | } |
780e87c2 JB |
129 | |
130 | /* If frame is small enough to fit in skb->head, pull it completely. | |
131 | * If not, only pull ieee80211_hdr (including crypto if present, and | |
132 | * an additional 8 bytes for SNAP/ethertype, see below) so that | |
133 | * splice() or TCP coalesce are more efficient. | |
134 | * | |
135 | * Since, in addition, ieee80211_data_to_8023() always pull in at | |
136 | * least 8 bytes (possibly more for mesh) we can do the same here | |
137 | * to save the cost of doing it later. That still doesn't pull in | |
138 | * the actual IP header since the typical case has a SNAP header. | |
139 | * If the latter changes (there are efforts in the standards group | |
140 | * to do so) we should revisit this and ieee80211_data_to_8023(). | |
141 | */ | |
e29cc6b9 SS |
142 | headlen = (len <= skb_tailroom(skb)) ? len : |
143 | hdrlen + crypt_len + 8; | |
780e87c2 | 144 | |
e29cc6b9 SS |
145 | /* The firmware may align the packet to DWORD. |
146 | * The padding is inserted after the IV. | |
147 | * After copying the header + IV skip the padding if | |
148 | * present before copying packet data. | |
149 | */ | |
150 | hdrlen += crypt_len; | |
de1887c0 LC |
151 | |
152 | if (WARN_ONCE(headlen < hdrlen, | |
153 | "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n", | |
154 | hdrlen, len, crypt_len)) { | |
155 | /* | |
156 | * We warn and trace because we want to be able to see | |
157 | * it in trace-cmd as well. | |
158 | */ | |
159 | IWL_DEBUG_RX(mvm, | |
160 | "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n", | |
161 | hdrlen, len, crypt_len); | |
162 | return -EINVAL; | |
163 | } | |
164 | ||
59ae1d12 JB |
165 | skb_put_data(skb, hdr, hdrlen); |
166 | skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen); | |
e29cc6b9 | 167 | |
59ca9572 JB |
168 | /* |
169 | * If we did CHECKSUM_COMPLETE, the hardware only does it right for | |
170 | * certain cases and starts the checksum after the SNAP. Check if | |
171 | * this is the case - it's easier to just bail out to CHECKSUM_NONE | |
172 | * in the cases the hardware didn't handle, since it's rare to see | |
173 | * such packets, even though the hardware did calculate the checksum | |
174 | * in this case, just starting after the MAC header instead. | |
175 | */ | |
176 | if (skb->ip_summed == CHECKSUM_COMPLETE) { | |
177 | struct { | |
178 | u8 hdr[6]; | |
179 | __be16 type; | |
180 | } __packed *shdr = (void *)((u8 *)hdr + hdrlen + pad_len); | |
181 | ||
182 | if (unlikely(headlen - hdrlen < sizeof(*shdr) || | |
183 | !ether_addr_equal(shdr->hdr, rfc1042_header) || | |
184 | (shdr->type != htons(ETH_P_IP) && | |
185 | shdr->type != htons(ETH_P_ARP) && | |
186 | shdr->type != htons(ETH_P_IPV6) && | |
187 | shdr->type != htons(ETH_P_8021Q) && | |
188 | shdr->type != htons(ETH_P_PAE) && | |
189 | shdr->type != htons(ETH_P_TDLS)))) | |
190 | skb->ip_summed = CHECKSUM_NONE; | |
191 | } | |
192 | ||
e29cc6b9 | 193 | fraglen = len - headlen; |
780e87c2 JB |
194 | |
195 | if (fraglen) { | |
e29cc6b9 | 196 | int offset = (void *)hdr + headlen + pad_len - |
780e87c2 JB |
197 | rxb_addr(rxb) + rxb_offset(rxb); |
198 | ||
199 | skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, | |
200 | fraglen, rxb->truesize); | |
201 | } | |
de1887c0 LC |
202 | |
203 | return 0; | |
f5e28eac | 204 | } |
780e87c2 | 205 | |
9bf13bee JB |
206 | static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm, |
207 | struct sk_buff *skb) | |
208 | { | |
209 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
210 | struct ieee80211_vendor_radiotap *radiotap; | |
3619b088 | 211 | const int size = sizeof(*radiotap) + sizeof(__le16); |
9bf13bee JB |
212 | |
213 | if (!mvm->cur_aid) | |
214 | return; | |
215 | ||
3619b088 JB |
216 | /* ensure alignment */ |
217 | BUILD_BUG_ON((size + 2) % 4); | |
218 | ||
219 | radiotap = skb_put(skb, size + 2); | |
9bf13bee JB |
220 | radiotap->align = 1; |
221 | /* Intel OUI */ | |
222 | radiotap->oui[0] = 0xf6; | |
223 | radiotap->oui[1] = 0x54; | |
224 | radiotap->oui[2] = 0x25; | |
225 | /* radiotap sniffer config sub-namespace */ | |
226 | radiotap->subns = 1; | |
227 | radiotap->present = 0x1; | |
228 | radiotap->len = size - sizeof(*radiotap); | |
3619b088 | 229 | radiotap->pad = 2; |
9bf13bee JB |
230 | |
231 | /* fill the data now */ | |
232 | memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid)); | |
3619b088 JB |
233 | /* and clear the padding */ |
234 | memset(radiotap->data + sizeof(__le16), 0, radiotap->pad); | |
9bf13bee JB |
235 | |
236 | rx_status->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA; | |
237 | } | |
238 | ||
f5e28eac JB |
239 | /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */ |
240 | static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, | |
241 | struct napi_struct *napi, | |
242 | struct sk_buff *skb, int queue, | |
9bf13bee JB |
243 | struct ieee80211_sta *sta, |
244 | bool csi) | |
f5e28eac | 245 | { |
ed714460 | 246 | if (iwl_mvm_check_pn(mvm, skb, queue, sta)) |
f5e28eac | 247 | kfree_skb(skb); |
5213e8a8 | 248 | else |
43ec72b7 | 249 | ieee80211_rx_napi(mvm->hw, sta, skb, napi); |
780e87c2 JB |
250 | } |
251 | ||
252 | static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, | |
18ead597 GBA |
253 | struct ieee80211_rx_status *rx_status, |
254 | u32 rate_n_flags, int energy_a, | |
255 | int energy_b) | |
780e87c2 | 256 | { |
18ead597 GBA |
257 | int max_energy; |
258 | u32 rate_flags = rate_n_flags; | |
780e87c2 | 259 | |
780e87c2 | 260 | energy_a = energy_a ? -energy_a : S8_MIN; |
780e87c2 | 261 | energy_b = energy_b ? -energy_b : S8_MIN; |
780e87c2 | 262 | max_energy = max(energy_a, energy_b); |
780e87c2 | 263 | |
d56a7801 SS |
264 | IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n", |
265 | energy_a, energy_b, max_energy); | |
780e87c2 JB |
266 | |
267 | rx_status->signal = max_energy; | |
c4e45c84 ST |
268 | rx_status->chains = |
269 | (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS; | |
780e87c2 JB |
270 | rx_status->chain_signal[0] = energy_a; |
271 | rx_status->chain_signal[1] = energy_b; | |
d56a7801 | 272 | rx_status->chain_signal[2] = S8_MIN; |
780e87c2 JB |
273 | } |
274 | ||
65db391d JB |
275 | static int iwl_mvm_rx_mgmt_prot(struct ieee80211_sta *sta, |
276 | struct ieee80211_hdr *hdr, | |
277 | struct iwl_rx_mpdu_desc *desc, | |
278 | u32 status) | |
b1fdc250 JB |
279 | { |
280 | struct iwl_mvm_sta *mvmsta; | |
281 | struct iwl_mvm_vif *mvmvif; | |
282 | u8 fwkeyid = u32_get_bits(status, IWL_RX_MPDU_STATUS_KEY); | |
283 | u8 keyid; | |
284 | struct ieee80211_key_conf *key; | |
285 | u32 len = le16_to_cpu(desc->mpdu_len); | |
286 | const u8 *frame = (void *)hdr; | |
287 | ||
65db391d JB |
288 | if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE) |
289 | return 0; | |
290 | ||
b1fdc250 JB |
291 | /* |
292 | * For non-beacon, we don't really care. But beacons may | |
293 | * be filtered out, and we thus need the firmware's replay | |
294 | * detection, otherwise beacons the firmware previously | |
295 | * filtered could be replayed, or something like that, and | |
296 | * it can filter a lot - though usually only if nothing has | |
297 | * changed. | |
298 | */ | |
299 | if (!ieee80211_is_beacon(hdr->frame_control)) | |
300 | return 0; | |
301 | ||
302 | /* good cases */ | |
303 | if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK && | |
304 | !(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) | |
305 | return 0; | |
306 | ||
307 | if (!sta) | |
308 | return -1; | |
309 | ||
310 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
311 | ||
312 | /* what? */ | |
313 | if (fwkeyid != 6 && fwkeyid != 7) | |
314 | return -1; | |
315 | ||
316 | mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); | |
317 | ||
318 | key = rcu_dereference(mvmvif->bcn_prot.keys[fwkeyid - 6]); | |
319 | if (!key) | |
320 | return -1; | |
321 | ||
322 | if (len < key->icv_len + IEEE80211_GMAC_PN_LEN + 2) | |
323 | return -1; | |
324 | ||
325 | /* | |
326 | * See if the key ID matches - if not this may be due to a | |
327 | * switch and the firmware may erroneously report !MIC_OK. | |
328 | */ | |
329 | keyid = frame[len - key->icv_len - IEEE80211_GMAC_PN_LEN - 2]; | |
330 | if (keyid != fwkeyid) | |
331 | return -1; | |
332 | ||
333 | /* Report status to mac80211 */ | |
334 | if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) | |
335 | ieee80211_key_mic_failure(key); | |
336 | else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR) | |
337 | ieee80211_key_replay(key); | |
338 | ||
339 | return -1; | |
340 | } | |
341 | ||
342 | static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
343 | struct ieee80211_hdr *hdr, | |
fabdcc2e SS |
344 | struct ieee80211_rx_status *stats, u16 phy_info, |
345 | struct iwl_rx_mpdu_desc *desc, | |
346 | u32 pkt_flags, int queue, u8 *crypt_len) | |
780e87c2 | 347 | { |
e365e7de | 348 | u32 status = le32_to_cpu(desc->status); |
780e87c2 | 349 | |
fabdcc2e SS |
350 | /* |
351 | * Drop UNKNOWN frames in aggregation, unless in monitor mode | |
352 | * (where we don't have the keys). | |
353 | * We limit this to aggregation because in TKIP this is a valid | |
354 | * scenario, since we may not have the (correct) TTAK (phase 1 | |
355 | * key) in the firmware. | |
356 | */ | |
357 | if (phy_info & IWL_RX_MPDU_PHY_AMPDU && | |
358 | (status & IWL_RX_MPDU_STATUS_SEC_MASK) == | |
359 | IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on) | |
360 | return -1; | |
361 | ||
65db391d JB |
362 | if (unlikely(ieee80211_is_mgmt(hdr->frame_control) && |
363 | !ieee80211_has_protected(hdr->frame_control))) | |
364 | return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status); | |
365 | ||
780e87c2 JB |
366 | if (!ieee80211_has_protected(hdr->frame_control) || |
367 | (status & IWL_RX_MPDU_STATUS_SEC_MASK) == | |
368 | IWL_RX_MPDU_STATUS_SEC_NONE) | |
369 | return 0; | |
370 | ||
371 | /* TODO: handle packets encrypted with unknown alg */ | |
372 | ||
373 | switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) { | |
374 | case IWL_RX_MPDU_STATUS_SEC_CCM: | |
375 | case IWL_RX_MPDU_STATUS_SEC_GCM: | |
f5e28eac | 376 | BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN); |
780e87c2 JB |
377 | /* alg is CCM: check MIC only */ |
378 | if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) | |
379 | return -1; | |
380 | ||
381 | stats->flag |= RX_FLAG_DECRYPTED; | |
bf190370 SS |
382 | if (pkt_flags & FH_RSCSR_RADA_EN) |
383 | stats->flag |= RX_FLAG_MIC_STRIPPED; | |
780e87c2 JB |
384 | *crypt_len = IEEE80211_CCMP_HDR_LEN; |
385 | return 0; | |
386 | case IWL_RX_MPDU_STATUS_SEC_TKIP: | |
387 | /* Don't drop the frame and decrypt it in SW */ | |
57df3839 SS |
388 | if (!fw_has_api(&mvm->fw->ucode_capa, |
389 | IWL_UCODE_TLV_API_DEPRECATE_TTAK) && | |
390 | !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK)) | |
780e87c2 JB |
391 | return 0; |
392 | ||
286ca8eb | 393 | if (mvm->trans->trans_cfg->gen2 && |
7f768ad5 DS |
394 | !(status & RX_MPDU_RES_STATUS_MIC_OK)) |
395 | stats->flag |= RX_FLAG_MMIC_ERROR; | |
396 | ||
780e87c2 | 397 | *crypt_len = IEEE80211_TKIP_IV_LEN; |
5a2abdca | 398 | fallthrough; |
780e87c2 JB |
399 | case IWL_RX_MPDU_STATUS_SEC_WEP: |
400 | if (!(status & IWL_RX_MPDU_STATUS_ICV_OK)) | |
401 | return -1; | |
402 | ||
403 | stats->flag |= RX_FLAG_DECRYPTED; | |
404 | if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == | |
405 | IWL_RX_MPDU_STATUS_SEC_WEP) | |
406 | *crypt_len = IEEE80211_WEP_IV_LEN; | |
9d0fc5a5 | 407 | |
7f768ad5 | 408 | if (pkt_flags & FH_RSCSR_RADA_EN) { |
9d0fc5a5 | 409 | stats->flag |= RX_FLAG_ICV_STRIPPED; |
286ca8eb | 410 | if (mvm->trans->trans_cfg->gen2) |
7f768ad5 DS |
411 | stats->flag |= RX_FLAG_MMIC_STRIPPED; |
412 | } | |
9d0fc5a5 | 413 | |
780e87c2 JB |
414 | return 0; |
415 | case IWL_RX_MPDU_STATUS_SEC_EXT_ENC: | |
416 | if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) | |
417 | return -1; | |
418 | stats->flag |= RX_FLAG_DECRYPTED; | |
419 | return 0; | |
b1fdc250 | 420 | case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC: |
65db391d | 421 | break; |
780e87c2 | 422 | default: |
94b952b5 EG |
423 | /* |
424 | * Sometimes we can get frames that were not decrypted | |
425 | * because the firmware didn't have the keys yet. This can | |
426 | * happen after connection where we can get multicast frames | |
427 | * before the GTK is installed. | |
428 | * Silently drop those frames. | |
429 | * Also drop un-decrypted frames in monitor mode. | |
430 | */ | |
431 | if (!is_multicast_ether_addr(hdr->addr1) && | |
432 | !mvm->monitor_on && net_ratelimit()) | |
baf41bc3 | 433 | IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status); |
780e87c2 JB |
434 | } |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
59ca9572 JB |
439 | static void iwl_mvm_rx_csum(struct iwl_mvm *mvm, |
440 | struct ieee80211_sta *sta, | |
780e87c2 | 441 | struct sk_buff *skb, |
59ca9572 | 442 | struct iwl_rx_packet *pkt) |
780e87c2 | 443 | { |
59ca9572 JB |
444 | struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; |
445 | ||
446 | if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { | |
447 | if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) { | |
448 | u16 hwsum = be16_to_cpu(desc->v3.raw_xsum); | |
449 | ||
450 | skb->ip_summed = CHECKSUM_COMPLETE; | |
451 | skb->csum = csum_unfold(~(__force __sum16)hwsum); | |
452 | } | |
453 | } else { | |
454 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
455 | struct iwl_mvm_vif *mvmvif; | |
456 | u16 flags = le16_to_cpu(desc->l3l4_flags); | |
457 | u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >> | |
458 | IWL_RX_L3_PROTO_POS); | |
459 | ||
460 | mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); | |
461 | ||
462 | if (mvmvif->features & NETIF_F_RXCSUM && | |
463 | flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK && | |
464 | (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK || | |
465 | l3_prot == IWL_RX_L3_TYPE_IPV6 || | |
466 | l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG)) | |
467 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
468 | } | |
780e87c2 JB |
469 | } |
470 | ||
a571f5f6 | 471 | /* |
5ab2ba93 SS |
472 | * returns true if a packet is a duplicate and should be dropped. |
473 | * Updates AMSDU PN tracking info | |
a571f5f6 | 474 | */ |
5ab2ba93 SS |
475 | static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue, |
476 | struct ieee80211_rx_status *rx_status, | |
477 | struct ieee80211_hdr *hdr, | |
478 | struct iwl_rx_mpdu_desc *desc) | |
a571f5f6 SS |
479 | { |
480 | struct iwl_mvm_sta *mvm_sta; | |
481 | struct iwl_mvm_rxq_dup_data *dup_data; | |
5ab2ba93 | 482 | u8 tid, sub_frame_idx; |
a571f5f6 SS |
483 | |
484 | if (WARN_ON(IS_ERR_OR_NULL(sta))) | |
485 | return false; | |
486 | ||
a571f5f6 SS |
487 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
488 | dup_data = &mvm_sta->dup_data[queue]; | |
489 | ||
490 | /* | |
491 | * Drop duplicate 802.11 retransmissions | |
492 | * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery") | |
493 | */ | |
494 | if (ieee80211_is_ctl(hdr->frame_control) || | |
495 | ieee80211_is_qos_nullfunc(hdr->frame_control) || | |
496 | is_multicast_ether_addr(hdr->addr1)) { | |
497 | rx_status->flag |= RX_FLAG_DUP_VALIDATED; | |
498 | return false; | |
499 | } | |
500 | ||
501 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
502 | /* frame has qos control */ | |
8f66e064 | 503 | tid = ieee80211_get_tid(hdr); |
a571f5f6 SS |
504 | else |
505 | tid = IWL_MAX_TID_COUNT; | |
506 | ||
507 | /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */ | |
18ead597 GBA |
508 | sub_frame_idx = desc->amsdu_info & |
509 | IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; | |
a571f5f6 SS |
510 | |
511 | if (unlikely(ieee80211_has_retry(hdr->frame_control) && | |
512 | dup_data->last_seq[tid] == hdr->seq_ctrl && | |
513 | dup_data->last_sub_frame[tid] >= sub_frame_idx)) | |
514 | return true; | |
515 | ||
5ab2ba93 SS |
516 | /* Allow same PN as the first subframe for following sub frames */ |
517 | if (dup_data->last_seq[tid] == hdr->seq_ctrl && | |
518 | sub_frame_idx > dup_data->last_sub_frame[tid] && | |
519 | desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) | |
520 | rx_status->flag |= RX_FLAG_ALLOW_SAME_PN; | |
521 | ||
a571f5f6 SS |
522 | dup_data->last_seq[tid] = hdr->seq_ctrl; |
523 | dup_data->last_sub_frame[tid] = sub_frame_idx; | |
524 | ||
525 | rx_status->flag |= RX_FLAG_DUP_VALIDATED; | |
526 | ||
527 | return false; | |
528 | } | |
529 | ||
94bb4481 | 530 | int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask, |
e20a5c9f JB |
531 | const struct iwl_mvm_internal_rxq_notif *notif, |
532 | u32 notif_size, bool async) | |
94bb4481 | 533 | { |
521dc6c7 EG |
534 | u8 buf[sizeof(struct iwl_rxq_sync_cmd) + |
535 | sizeof(struct iwl_mvm_rss_sync_notif)]; | |
536 | struct iwl_rxq_sync_cmd *cmd = (void *)buf; | |
e20a5c9f | 537 | u32 data_size = sizeof(*cmd) + notif_size; |
94bb4481 SS |
538 | int ret; |
539 | ||
521dc6c7 EG |
540 | /* |
541 | * size must be a multiple of DWORD | |
542 | * Ensure we don't overflow buf | |
543 | */ | |
e20a5c9f JB |
544 | if (WARN_ON(notif_size & 3 || |
545 | notif_size > sizeof(struct iwl_mvm_rss_sync_notif))) | |
94bb4481 SS |
546 | return -EINVAL; |
547 | ||
94bb4481 | 548 | cmd->rxq_mask = cpu_to_le32(rxq_mask); |
e20a5c9f | 549 | cmd->count = cpu_to_le32(notif_size); |
94bb4481 | 550 | cmd->flags = 0; |
e20a5c9f | 551 | memcpy(cmd->payload, notif, notif_size); |
94bb4481 SS |
552 | |
553 | ret = iwl_mvm_send_cmd_pdu(mvm, | |
554 | WIDE_ID(DATA_PATH_GROUP, | |
555 | TRIGGER_RX_QUEUES_NOTIF_CMD), | |
3c514bf8 | 556 | async ? CMD_ASYNC : 0, data_size, cmd); |
94bb4481 | 557 | |
94bb4481 SS |
558 | return ret; |
559 | } | |
560 | ||
74dd1764 SS |
561 | /* |
562 | * Returns true if sn2 - buffer_size < sn1 < sn2. | |
563 | * To be used only in order to compare reorder buffer head with NSSN. | |
564 | * We fully trust NSSN unless it is behind us due to reorder timeout. | |
565 | * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN. | |
566 | */ | |
567 | static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size) | |
568 | { | |
569 | return ieee80211_sn_less(sn1, sn2) && | |
570 | !ieee80211_sn_less(sn1, sn2 - buffer_size); | |
571 | } | |
572 | ||
3c514bf8 EG |
573 | static void iwl_mvm_sync_nssn(struct iwl_mvm *mvm, u8 baid, u16 nssn) |
574 | { | |
d829229e EG |
575 | if (IWL_MVM_USE_NSSN_SYNC) { |
576 | struct iwl_mvm_rss_sync_notif notif = { | |
577 | .metadata.type = IWL_MVM_RXQ_NSSN_SYNC, | |
578 | .metadata.sync = 0, | |
579 | .nssn_sync.baid = baid, | |
580 | .nssn_sync.nssn = nssn, | |
581 | }; | |
582 | ||
583 | iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, | |
584 | sizeof(notif)); | |
585 | } | |
3c514bf8 EG |
586 | } |
587 | ||
0690405f SS |
588 | #define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10) |
589 | ||
ecd09ddc EG |
590 | enum iwl_mvm_release_flags { |
591 | IWL_MVM_RELEASE_SEND_RSS_SYNC = BIT(0), | |
592 | IWL_MVM_RELEASE_FROM_RSS_SYNC = BIT(1), | |
593 | }; | |
594 | ||
b915c101 SS |
595 | static void iwl_mvm_release_frames(struct iwl_mvm *mvm, |
596 | struct ieee80211_sta *sta, | |
597 | struct napi_struct *napi, | |
76f4a85e | 598 | struct iwl_mvm_baid_data *baid_data, |
b915c101 | 599 | struct iwl_mvm_reorder_buffer *reorder_buf, |
ecd09ddc | 600 | u16 nssn, u32 flags) |
b915c101 | 601 | { |
dfdddd92 JB |
602 | struct iwl_mvm_reorder_buf_entry *entries = |
603 | &baid_data->entries[reorder_buf->queue * | |
604 | baid_data->entries_per_queue]; | |
b915c101 SS |
605 | u16 ssn = reorder_buf->head_sn; |
606 | ||
0690405f SS |
607 | lockdep_assert_held(&reorder_buf->lock); |
608 | ||
ecd09ddc EG |
609 | /* |
610 | * We keep the NSSN not too far behind, if we are sync'ing it and it | |
611 | * is more than 2048 ahead of us, it must be behind us. Discard it. | |
612 | * This can happen if the queue that hit the 0 / 2048 seqno was lagging | |
613 | * behind and this queue already processed packets. The next if | |
614 | * would have caught cases where this queue would have processed less | |
615 | * than 64 packets, but it may have processed more than 64 packets. | |
616 | */ | |
617 | if ((flags & IWL_MVM_RELEASE_FROM_RSS_SYNC) && | |
618 | ieee80211_sn_less(nssn, ssn)) | |
619 | goto set_timer; | |
620 | ||
0690405f | 621 | /* ignore nssn smaller than head sn - this can happen due to timeout */ |
74dd1764 | 622 | if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size)) |
5351f9ab | 623 | goto set_timer; |
0690405f | 624 | |
74dd1764 | 625 | while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) { |
b915c101 | 626 | int index = ssn % reorder_buf->buf_size; |
dfdddd92 | 627 | struct sk_buff_head *skb_list = &entries[index].e.frames; |
b915c101 SS |
628 | struct sk_buff *skb; |
629 | ||
630 | ssn = ieee80211_sn_inc(ssn); | |
ecd09ddc EG |
631 | if ((flags & IWL_MVM_RELEASE_SEND_RSS_SYNC) && |
632 | (ssn == 2048 || ssn == 0)) | |
3c514bf8 | 633 | iwl_mvm_sync_nssn(mvm, baid_data->baid, ssn); |
b915c101 | 634 | |
5a710b86 SS |
635 | /* |
636 | * Empty the list. Will have more than one frame for A-MSDU. | |
637 | * Empty list is valid as well since nssn indicates frames were | |
638 | * received. | |
639 | */ | |
b915c101 SS |
640 | while ((skb = __skb_dequeue(skb_list))) { |
641 | iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, | |
642 | reorder_buf->queue, | |
9bf13bee | 643 | sta, false); |
b915c101 SS |
644 | reorder_buf->num_stored--; |
645 | } | |
646 | } | |
647 | reorder_buf->head_sn = nssn; | |
0690405f | 648 | |
5351f9ab | 649 | set_timer: |
0690405f SS |
650 | if (reorder_buf->num_stored && !reorder_buf->removed) { |
651 | u16 index = reorder_buf->head_sn % reorder_buf->buf_size; | |
652 | ||
dfdddd92 | 653 | while (skb_queue_empty(&entries[index].e.frames)) |
0690405f SS |
654 | index = (index + 1) % reorder_buf->buf_size; |
655 | /* modify timer to match next frame's expiration time */ | |
656 | mod_timer(&reorder_buf->reorder_timer, | |
dfdddd92 | 657 | entries[index].e.reorder_time + 1 + |
0690405f SS |
658 | RX_REORDER_BUF_TIMEOUT_MQ); |
659 | } else { | |
660 | del_timer(&reorder_buf->reorder_timer); | |
661 | } | |
662 | } | |
663 | ||
8cef5344 | 664 | void iwl_mvm_reorder_timer_expired(struct timer_list *t) |
0690405f | 665 | { |
8cef5344 | 666 | struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer); |
dfdddd92 JB |
667 | struct iwl_mvm_baid_data *baid_data = |
668 | iwl_mvm_baid_data_from_reorder_buf(buf); | |
669 | struct iwl_mvm_reorder_buf_entry *entries = | |
670 | &baid_data->entries[buf->queue * baid_data->entries_per_queue]; | |
0690405f SS |
671 | int i; |
672 | u16 sn = 0, index = 0; | |
673 | bool expired = false; | |
9c36fd71 | 674 | bool cont = false; |
0690405f | 675 | |
9b856836 | 676 | spin_lock(&buf->lock); |
0690405f SS |
677 | |
678 | if (!buf->num_stored || buf->removed) { | |
9b856836 | 679 | spin_unlock(&buf->lock); |
0690405f SS |
680 | return; |
681 | } | |
682 | ||
683 | for (i = 0; i < buf->buf_size ; i++) { | |
684 | index = (buf->head_sn + i) % buf->buf_size; | |
685 | ||
dfdddd92 | 686 | if (skb_queue_empty(&entries[index].e.frames)) { |
9c36fd71 SS |
687 | /* |
688 | * If there is a hole and the next frame didn't expire | |
689 | * we want to break and not advance SN | |
690 | */ | |
691 | cont = false; | |
0690405f | 692 | continue; |
9c36fd71 | 693 | } |
dfdddd92 JB |
694 | if (!cont && |
695 | !time_after(jiffies, entries[index].e.reorder_time + | |
9c36fd71 | 696 | RX_REORDER_BUF_TIMEOUT_MQ)) |
0690405f | 697 | break; |
9c36fd71 | 698 | |
0690405f | 699 | expired = true; |
9c36fd71 SS |
700 | /* continue until next hole after this expired frames */ |
701 | cont = true; | |
0690405f SS |
702 | sn = ieee80211_sn_add(buf->head_sn, i + 1); |
703 | } | |
704 | ||
705 | if (expired) { | |
706 | struct ieee80211_sta *sta; | |
528a542a | 707 | struct iwl_mvm_sta *mvmsta; |
3f1c4c58 | 708 | u8 sta_id = baid_data->sta_id; |
0690405f SS |
709 | |
710 | rcu_read_lock(); | |
3f1c4c58 | 711 | sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]); |
528a542a EG |
712 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
713 | ||
0690405f | 714 | /* SN is set to the last expired frame + 1 */ |
35263a03 SS |
715 | IWL_DEBUG_HT(buf->mvm, |
716 | "Releasing expired frames for sta %u, sn %d\n", | |
3f1c4c58 | 717 | sta_id, sn); |
528a542a | 718 | iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif, |
3f1c4c58 | 719 | sta, baid_data->tid); |
3c514bf8 | 720 | iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data, |
ecd09ddc | 721 | buf, sn, IWL_MVM_RELEASE_SEND_RSS_SYNC); |
0690405f | 722 | rcu_read_unlock(); |
aeb8012c | 723 | } else { |
0690405f SS |
724 | /* |
725 | * If no frame expired and there are stored frames, index is now | |
726 | * pointing to the first unexpired frame - modify timer | |
727 | * accordingly to this frame. | |
728 | */ | |
729 | mod_timer(&buf->reorder_timer, | |
dfdddd92 | 730 | entries[index].e.reorder_time + |
0690405f SS |
731 | 1 + RX_REORDER_BUF_TIMEOUT_MQ); |
732 | } | |
9b856836 | 733 | spin_unlock(&buf->lock); |
b915c101 SS |
734 | } |
735 | ||
736 | static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue, | |
737 | struct iwl_mvm_delba_data *data) | |
738 | { | |
739 | struct iwl_mvm_baid_data *ba_data; | |
740 | struct ieee80211_sta *sta; | |
741 | struct iwl_mvm_reorder_buffer *reorder_buf; | |
742 | u8 baid = data->baid; | |
743 | ||
fd659f8e | 744 | if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid)) |
b915c101 SS |
745 | return; |
746 | ||
747 | rcu_read_lock(); | |
748 | ||
749 | ba_data = rcu_dereference(mvm->baid_map[baid]); | |
750 | if (WARN_ON_ONCE(!ba_data)) | |
751 | goto out; | |
752 | ||
753 | sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]); | |
754 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) | |
755 | goto out; | |
756 | ||
757 | reorder_buf = &ba_data->reorder_buf[queue]; | |
758 | ||
759 | /* release all frames that are in the reorder buffer to the stack */ | |
0690405f | 760 | spin_lock_bh(&reorder_buf->lock); |
76f4a85e | 761 | iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf, |
b915c101 | 762 | ieee80211_sn_add(reorder_buf->head_sn, |
3c514bf8 | 763 | reorder_buf->buf_size), |
ecd09ddc | 764 | 0); |
0690405f SS |
765 | spin_unlock_bh(&reorder_buf->lock); |
766 | del_timer_sync(&reorder_buf->reorder_timer); | |
b915c101 SS |
767 | |
768 | out: | |
769 | rcu_read_unlock(); | |
770 | } | |
771 | ||
c61b655a EG |
772 | static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm, |
773 | struct napi_struct *napi, | |
ecd09ddc EG |
774 | u8 baid, u16 nssn, int queue, |
775 | u32 flags) | |
c61b655a EG |
776 | { |
777 | struct ieee80211_sta *sta; | |
778 | struct iwl_mvm_reorder_buffer *reorder_buf; | |
779 | struct iwl_mvm_baid_data *ba_data; | |
780 | ||
781 | IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n", | |
782 | baid, nssn); | |
783 | ||
784 | if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID || | |
785 | baid >= ARRAY_SIZE(mvm->baid_map))) | |
786 | return; | |
787 | ||
788 | rcu_read_lock(); | |
789 | ||
790 | ba_data = rcu_dereference(mvm->baid_map[baid]); | |
791 | if (WARN_ON_ONCE(!ba_data)) | |
792 | goto out; | |
793 | ||
794 | sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]); | |
795 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) | |
796 | goto out; | |
797 | ||
798 | reorder_buf = &ba_data->reorder_buf[queue]; | |
799 | ||
800 | spin_lock_bh(&reorder_buf->lock); | |
3c514bf8 | 801 | iwl_mvm_release_frames(mvm, sta, napi, ba_data, |
ecd09ddc | 802 | reorder_buf, nssn, flags); |
c61b655a EG |
803 | spin_unlock_bh(&reorder_buf->lock); |
804 | ||
805 | out: | |
806 | rcu_read_unlock(); | |
807 | } | |
808 | ||
809 | static void iwl_mvm_nssn_sync(struct iwl_mvm *mvm, | |
810 | struct napi_struct *napi, int queue, | |
811 | const struct iwl_mvm_nssn_sync_data *data) | |
812 | { | |
813 | iwl_mvm_release_frames_from_notif(mvm, napi, data->baid, | |
ecd09ddc EG |
814 | data->nssn, queue, |
815 | IWL_MVM_RELEASE_FROM_RSS_SYNC); | |
c61b655a EG |
816 | } |
817 | ||
818 | void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi, | |
819 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
94bb4481 SS |
820 | { |
821 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
822 | struct iwl_rxq_sync_notification *notif; | |
823 | struct iwl_mvm_internal_rxq_notif *internal_notif; | |
b570e5b0 | 824 | u32 len = iwl_rx_packet_payload_len(pkt); |
94bb4481 SS |
825 | |
826 | notif = (void *)pkt->data; | |
827 | internal_notif = (void *)notif->payload; | |
828 | ||
b570e5b0 JB |
829 | if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif), |
830 | "invalid notification size %d (%d)", | |
831 | len, (int)(sizeof(*notif) + sizeof(*internal_notif)))) | |
832 | return; | |
833 | /* remove only the firmware header, we want all of our payload below */ | |
834 | len -= sizeof(*notif); | |
835 | ||
42116705 JB |
836 | if (internal_notif->sync && |
837 | mvm->queue_sync_cookie != internal_notif->cookie) { | |
838 | WARN_ONCE(1, "Received expired RX queue sync message\n"); | |
839 | return; | |
d0ff5d22 SS |
840 | } |
841 | ||
842 | switch (internal_notif->type) { | |
843 | case IWL_MVM_RXQ_EMPTY: | |
b570e5b0 JB |
844 | WARN_ONCE(len != sizeof(*internal_notif), |
845 | "invalid empty notification size %d (%d)", | |
846 | len, (int)sizeof(*internal_notif)); | |
0636b938 | 847 | break; |
94bb4481 | 848 | case IWL_MVM_RXQ_NOTIF_DEL_BA: |
b570e5b0 JB |
849 | if (WARN_ONCE(len != sizeof(struct iwl_mvm_rss_sync_notif), |
850 | "invalid delba notification size %d (%d)", | |
851 | len, (int)sizeof(struct iwl_mvm_rss_sync_notif))) | |
852 | break; | |
b915c101 | 853 | iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data); |
94bb4481 | 854 | break; |
c61b655a | 855 | case IWL_MVM_RXQ_NSSN_SYNC: |
b570e5b0 JB |
856 | if (WARN_ONCE(len != sizeof(struct iwl_mvm_rss_sync_notif), |
857 | "invalid nssn sync notification size %d (%d)", | |
858 | len, (int)sizeof(struct iwl_mvm_rss_sync_notif))) | |
859 | break; | |
c61b655a EG |
860 | iwl_mvm_nssn_sync(mvm, napi, queue, |
861 | (void *)internal_notif->data); | |
862 | break; | |
94bb4481 SS |
863 | default: |
864 | WARN_ONCE(1, "Invalid identifier %d", internal_notif->type); | |
865 | } | |
42116705 | 866 | |
2f7a04c7 JB |
867 | if (internal_notif->sync) { |
868 | WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state), | |
869 | "queue sync: queue %d responded a second time!\n", | |
870 | queue); | |
871 | if (READ_ONCE(mvm->queue_sync_state) == 0) | |
872 | wake_up(&mvm->rx_sync_waitq); | |
873 | } | |
94bb4481 SS |
874 | } |
875 | ||
0968fbfa JB |
876 | static void iwl_mvm_oldsn_workaround(struct iwl_mvm *mvm, |
877 | struct ieee80211_sta *sta, int tid, | |
878 | struct iwl_mvm_reorder_buffer *buffer, | |
879 | u32 reorder, u32 gp2, int queue) | |
880 | { | |
881 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
882 | ||
883 | if (gp2 != buffer->consec_oldsn_ampdu_gp2) { | |
884 | /* we have a new (A-)MPDU ... */ | |
885 | ||
886 | /* | |
887 | * reset counter to 0 if we didn't have any oldsn in | |
888 | * the last A-MPDU (as detected by GP2 being identical) | |
889 | */ | |
890 | if (!buffer->consec_oldsn_prev_drop) | |
891 | buffer->consec_oldsn_drops = 0; | |
892 | ||
893 | /* either way, update our tracking state */ | |
894 | buffer->consec_oldsn_ampdu_gp2 = gp2; | |
895 | } else if (buffer->consec_oldsn_prev_drop) { | |
896 | /* | |
897 | * tracking state didn't change, and we had an old SN | |
898 | * indication before - do nothing in this case, we | |
899 | * already noted this one down and are waiting for the | |
900 | * next A-MPDU (by GP2) | |
901 | */ | |
902 | return; | |
903 | } | |
904 | ||
905 | /* return unless this MPDU has old SN */ | |
906 | if (!(reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)) | |
907 | return; | |
908 | ||
909 | /* update state */ | |
910 | buffer->consec_oldsn_prev_drop = 1; | |
911 | buffer->consec_oldsn_drops++; | |
912 | ||
913 | /* if limit is reached, send del BA and reset state */ | |
914 | if (buffer->consec_oldsn_drops == IWL_MVM_AMPDU_CONSEC_DROPS_DELBA) { | |
915 | IWL_WARN(mvm, | |
916 | "reached %d old SN frames from %pM on queue %d, stopping BA session on TID %d\n", | |
917 | IWL_MVM_AMPDU_CONSEC_DROPS_DELBA, | |
918 | sta->addr, queue, tid); | |
919 | ieee80211_stop_rx_ba_session(mvmsta->vif, BIT(tid), sta->addr); | |
920 | buffer->consec_oldsn_prev_drop = 0; | |
921 | buffer->consec_oldsn_drops = 0; | |
922 | } | |
923 | } | |
924 | ||
b915c101 SS |
925 | /* |
926 | * Returns true if the MPDU was buffered\dropped, false if it should be passed | |
927 | * to upper layer. | |
928 | */ | |
929 | static bool iwl_mvm_reorder(struct iwl_mvm *mvm, | |
930 | struct napi_struct *napi, | |
931 | int queue, | |
932 | struct ieee80211_sta *sta, | |
933 | struct sk_buff *skb, | |
934 | struct iwl_rx_mpdu_desc *desc) | |
935 | { | |
0968fbfa | 936 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); |
3619b088 | 937 | struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb); |
1f9788f3 | 938 | struct iwl_mvm_sta *mvm_sta; |
b915c101 SS |
939 | struct iwl_mvm_baid_data *baid_data; |
940 | struct iwl_mvm_reorder_buffer *buffer; | |
941 | struct sk_buff *tail; | |
942 | u32 reorder = le32_to_cpu(desc->reorder_data); | |
943 | bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU; | |
e7e14089 SS |
944 | bool last_subframe = |
945 | desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME; | |
8f66e064 | 946 | u8 tid = ieee80211_get_tid(hdr); |
b915c101 SS |
947 | u8 sub_frame_idx = desc->amsdu_info & |
948 | IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; | |
dfdddd92 | 949 | struct iwl_mvm_reorder_buf_entry *entries; |
b915c101 SS |
950 | int index; |
951 | u16 nssn, sn; | |
952 | u8 baid; | |
953 | ||
954 | baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >> | |
955 | IWL_RX_MPDU_REORDER_BAID_SHIFT; | |
956 | ||
8ec8ed43 JB |
957 | /* |
958 | * This also covers the case of receiving a Block Ack Request | |
959 | * outside a BA session; we'll pass it to mac80211 and that | |
960 | * then sends a delBA action frame. | |
81444538 JB |
961 | * This also covers pure monitor mode, in which case we won't |
962 | * have any BA sessions. | |
8ec8ed43 | 963 | */ |
b915c101 SS |
964 | if (baid == IWL_RX_REORDER_DATA_INVALID_BAID) |
965 | return false; | |
966 | ||
967 | /* no sta yet */ | |
417795a3 SS |
968 | if (WARN_ONCE(IS_ERR_OR_NULL(sta), |
969 | "Got valid BAID without a valid station assigned\n")) | |
b915c101 SS |
970 | return false; |
971 | ||
1f9788f3 LC |
972 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
973 | ||
9a73a7d2 SS |
974 | /* not a data packet or a bar */ |
975 | if (!ieee80211_is_back_req(hdr->frame_control) && | |
976 | (!ieee80211_is_data_qos(hdr->frame_control) || | |
977 | is_multicast_ether_addr(hdr->addr1))) | |
b915c101 SS |
978 | return false; |
979 | ||
980 | if (unlikely(!ieee80211_is_data_present(hdr->frame_control))) | |
981 | return false; | |
982 | ||
983 | baid_data = rcu_dereference(mvm->baid_map[baid]); | |
5d43eab6 | 984 | if (!baid_data) { |
a600852a EG |
985 | IWL_DEBUG_RX(mvm, |
986 | "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n", | |
987 | baid, reorder); | |
b915c101 | 988 | return false; |
5d43eab6 SS |
989 | } |
990 | ||
b915c101 SS |
991 | if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id, |
992 | "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n", | |
993 | baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id, | |
994 | tid)) | |
995 | return false; | |
996 | ||
997 | nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK; | |
998 | sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >> | |
999 | IWL_RX_MPDU_REORDER_SN_SHIFT; | |
1000 | ||
1001 | buffer = &baid_data->reorder_buf[queue]; | |
dfdddd92 | 1002 | entries = &baid_data->entries[queue * baid_data->entries_per_queue]; |
b915c101 | 1003 | |
0690405f SS |
1004 | spin_lock_bh(&buffer->lock); |
1005 | ||
5d43eab6 SS |
1006 | if (!buffer->valid) { |
1007 | if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) { | |
1008 | spin_unlock_bh(&buffer->lock); | |
1009 | return false; | |
1010 | } | |
1011 | buffer->valid = true; | |
1012 | } | |
1013 | ||
9a73a7d2 | 1014 | if (ieee80211_is_back_req(hdr->frame_control)) { |
3c514bf8 | 1015 | iwl_mvm_release_frames(mvm, sta, napi, baid_data, |
ecd09ddc | 1016 | buffer, nssn, 0); |
9a73a7d2 SS |
1017 | goto drop; |
1018 | } | |
1019 | ||
b915c101 SS |
1020 | /* |
1021 | * If there was a significant jump in the nssn - adjust. | |
1022 | * If the SN is smaller than the NSSN it might need to first go into | |
1023 | * the reorder buffer, in which case we just release up to it and the | |
5f90472c | 1024 | * rest of the function will take care of storing it and releasing up to |
3c514bf8 EG |
1025 | * the nssn. |
1026 | * This should not happen. This queue has been lagging and it should | |
1027 | * have been updated by a IWL_MVM_RXQ_NSSN_SYNC notification. Be nice | |
1028 | * and update the other queues. | |
b915c101 | 1029 | */ |
74dd1764 | 1030 | if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size, |
5f90472c SS |
1031 | buffer->buf_size) || |
1032 | !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) { | |
b915c101 SS |
1033 | u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn; |
1034 | ||
76f4a85e | 1035 | iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, |
ecd09ddc | 1036 | min_sn, IWL_MVM_RELEASE_SEND_RSS_SYNC); |
b915c101 SS |
1037 | } |
1038 | ||
0968fbfa JB |
1039 | iwl_mvm_oldsn_workaround(mvm, sta, tid, buffer, reorder, |
1040 | rx_status->device_timestamp, queue); | |
1041 | ||
b915c101 SS |
1042 | /* drop any oudated packets */ |
1043 | if (ieee80211_sn_less(sn, buffer->head_sn)) | |
1044 | goto drop; | |
1045 | ||
1046 | /* release immediately if allowed by nssn and no stored frames */ | |
1047 | if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) { | |
74dd1764 | 1048 | if (iwl_mvm_is_sn_less(buffer->head_sn, nssn, |
e7e14089 | 1049 | buffer->buf_size) && |
3c514bf8 EG |
1050 | (!amsdu || last_subframe)) { |
1051 | /* | |
1052 | * If we crossed the 2048 or 0 SN, notify all the | |
1053 | * queues. This is done in order to avoid having a | |
1054 | * head_sn that lags behind for too long. When that | |
1055 | * happens, we can get to a situation where the head_sn | |
1056 | * is within the interval [nssn - buf_size : nssn] | |
1057 | * which will make us think that the nssn is a packet | |
1058 | * that we already freed because of the reordering | |
1059 | * buffer and we will ignore it. So maintain the | |
1060 | * head_sn somewhat updated across all the queues: | |
1061 | * when it crosses 0 and 2048. | |
1062 | */ | |
1063 | if (sn == 2048 || sn == 0) | |
1064 | iwl_mvm_sync_nssn(mvm, baid, sn); | |
0690405f | 1065 | buffer->head_sn = nssn; |
3c514bf8 | 1066 | } |
b915c101 | 1067 | /* No need to update AMSDU last SN - we are moving the head */ |
0690405f | 1068 | spin_unlock_bh(&buffer->lock); |
b915c101 SS |
1069 | return false; |
1070 | } | |
1071 | ||
14a1f85b SS |
1072 | /* |
1073 | * release immediately if there are no stored frames, and the sn is | |
1074 | * equal to the head. | |
1075 | * This can happen due to reorder timer, where NSSN is behind head_sn. | |
1076 | * When we released everything, and we got the next frame in the | |
1077 | * sequence, according to the NSSN we can't release immediately, | |
1078 | * while technically there is no hole and we can move forward. | |
1079 | */ | |
1080 | if (!buffer->num_stored && sn == buffer->head_sn) { | |
3c514bf8 EG |
1081 | if (!amsdu || last_subframe) { |
1082 | if (sn == 2048 || sn == 0) | |
1083 | iwl_mvm_sync_nssn(mvm, baid, sn); | |
14a1f85b | 1084 | buffer->head_sn = ieee80211_sn_inc(buffer->head_sn); |
3c514bf8 | 1085 | } |
14a1f85b SS |
1086 | /* No need to update AMSDU last SN - we are moving the head */ |
1087 | spin_unlock_bh(&buffer->lock); | |
1088 | return false; | |
1089 | } | |
1090 | ||
b915c101 SS |
1091 | index = sn % buffer->buf_size; |
1092 | ||
1093 | /* | |
1094 | * Check if we already stored this frame | |
1095 | * As AMSDU is either received or not as whole, logic is simple: | |
1096 | * If we have frames in that position in the buffer and the last frame | |
1097 | * originated from AMSDU had a different SN then it is a retransmission. | |
1098 | * If it is the same SN then if the subframe index is incrementing it | |
1099 | * is the same AMSDU - otherwise it is a retransmission. | |
1100 | */ | |
dfdddd92 | 1101 | tail = skb_peek_tail(&entries[index].e.frames); |
b915c101 SS |
1102 | if (tail && !amsdu) |
1103 | goto drop; | |
1104 | else if (tail && (sn != buffer->last_amsdu || | |
1105 | buffer->last_sub_index >= sub_frame_idx)) | |
1106 | goto drop; | |
1107 | ||
1108 | /* put in reorder buffer */ | |
dfdddd92 | 1109 | __skb_queue_tail(&entries[index].e.frames, skb); |
b915c101 | 1110 | buffer->num_stored++; |
dfdddd92 | 1111 | entries[index].e.reorder_time = jiffies; |
0690405f | 1112 | |
b915c101 SS |
1113 | if (amsdu) { |
1114 | buffer->last_amsdu = sn; | |
1115 | buffer->last_sub_index = sub_frame_idx; | |
1116 | } | |
1117 | ||
e7e14089 SS |
1118 | /* |
1119 | * We cannot trust NSSN for AMSDU sub-frames that are not the last. | |
1120 | * The reason is that NSSN advances on the first sub-frame, and may | |
1121 | * cause the reorder buffer to advance before all the sub-frames arrive. | |
1122 | * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with | |
1123 | * SN 1. NSSN for first sub frame will be 3 with the result of driver | |
1124 | * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is | |
1125 | * already ahead and it will be dropped. | |
1126 | * If the last sub-frame is not on this queue - we will get frame | |
1127 | * release notification with up to date NSSN. | |
1128 | */ | |
1129 | if (!amsdu || last_subframe) | |
3c514bf8 | 1130 | iwl_mvm_release_frames(mvm, sta, napi, baid_data, |
ecd09ddc EG |
1131 | buffer, nssn, |
1132 | IWL_MVM_RELEASE_SEND_RSS_SYNC); | |
e7e14089 | 1133 | |
0690405f | 1134 | spin_unlock_bh(&buffer->lock); |
b915c101 SS |
1135 | return true; |
1136 | ||
1137 | drop: | |
1138 | kfree_skb(skb); | |
0690405f | 1139 | spin_unlock_bh(&buffer->lock); |
b915c101 SS |
1140 | return true; |
1141 | } | |
1142 | ||
5d43eab6 SS |
1143 | static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm, |
1144 | u32 reorder_data, u8 baid) | |
10b2b201 SS |
1145 | { |
1146 | unsigned long now = jiffies; | |
1147 | unsigned long timeout; | |
1148 | struct iwl_mvm_baid_data *data; | |
1149 | ||
1150 | rcu_read_lock(); | |
1151 | ||
1152 | data = rcu_dereference(mvm->baid_map[baid]); | |
5d43eab6 | 1153 | if (!data) { |
a600852a EG |
1154 | IWL_DEBUG_RX(mvm, |
1155 | "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n", | |
1156 | baid, reorder_data); | |
10b2b201 | 1157 | goto out; |
5d43eab6 | 1158 | } |
10b2b201 SS |
1159 | |
1160 | if (!data->timeout) | |
1161 | goto out; | |
1162 | ||
1163 | timeout = data->timeout; | |
1164 | /* | |
1165 | * Do not update last rx all the time to avoid cache bouncing | |
1166 | * between the rx queues. | |
1167 | * Update it every timeout. Worst case is the session will | |
1168 | * expire after ~ 2 * timeout, which doesn't matter that much. | |
1169 | */ | |
1170 | if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now)) | |
1171 | /* Update is atomic */ | |
1172 | data->last_rx = now; | |
1173 | ||
1174 | out: | |
1175 | rcu_read_unlock(); | |
1176 | } | |
1177 | ||
e4d72208 SS |
1178 | static void iwl_mvm_flip_address(u8 *addr) |
1179 | { | |
1180 | int i; | |
1181 | u8 mac_addr[ETH_ALEN]; | |
1182 | ||
1183 | for (i = 0; i < ETH_ALEN; i++) | |
1184 | mac_addr[i] = addr[ETH_ALEN - i - 1]; | |
1185 | ether_addr_copy(addr, mac_addr); | |
1186 | } | |
1187 | ||
bdf180c8 | 1188 | struct iwl_mvm_rx_phy_data { |
6721039d | 1189 | enum iwl_rx_phy_info_type info_type; |
bdf180c8 ST |
1190 | __le32 d0, d1, d2, d3; |
1191 | __le16 d4; | |
1192 | }; | |
1193 | ||
1194 | static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm, | |
1195 | struct iwl_mvm_rx_phy_data *phy_data, | |
1196 | u32 rate_n_flags, | |
1197 | struct ieee80211_radiotap_he_mu *he_mu) | |
dabf9844 | 1198 | { |
bdf180c8 ST |
1199 | u32 phy_data2 = le32_to_cpu(phy_data->d2); |
1200 | u32 phy_data3 = le32_to_cpu(phy_data->d3); | |
1201 | u16 phy_data4 = le16_to_cpu(phy_data->d4); | |
dabf9844 | 1202 | |
bdf180c8 | 1203 | if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) { |
dabf9844 JB |
1204 | he_mu->flags1 |= |
1205 | cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN | | |
1206 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN); | |
1207 | ||
1208 | he_mu->flags1 |= | |
bdf180c8 ST |
1209 | le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU, |
1210 | phy_data4), | |
dabf9844 JB |
1211 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU); |
1212 | ||
bdf180c8 ST |
1213 | he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0, |
1214 | phy_data2); | |
1215 | he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1, | |
1216 | phy_data3); | |
1217 | he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2, | |
1218 | phy_data2); | |
1219 | he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3, | |
1220 | phy_data3); | |
dabf9844 JB |
1221 | } |
1222 | ||
bdf180c8 | 1223 | if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) && |
317bc55f | 1224 | (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) != RATE_MCS_CHAN_WIDTH_20) { |
dabf9844 JB |
1225 | he_mu->flags1 |= |
1226 | cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN | | |
1227 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN); | |
1228 | ||
1229 | he_mu->flags2 |= | |
bdf180c8 ST |
1230 | le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU, |
1231 | phy_data4), | |
dabf9844 JB |
1232 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU); |
1233 | ||
bdf180c8 ST |
1234 | he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0, |
1235 | phy_data2); | |
1236 | he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1, | |
1237 | phy_data3); | |
1238 | he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2, | |
1239 | phy_data2); | |
1240 | he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3, | |
1241 | phy_data3); | |
dabf9844 JB |
1242 | } |
1243 | } | |
1244 | ||
ffe9d734 | 1245 | static void |
bdf180c8 ST |
1246 | iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data, |
1247 | u32 rate_n_flags, | |
ffe9d734 JB |
1248 | struct ieee80211_radiotap_he *he, |
1249 | struct ieee80211_radiotap_he_mu *he_mu, | |
1250 | struct ieee80211_rx_status *rx_status) | |
1251 | { | |
1252 | /* | |
1253 | * Unfortunately, we have to leave the mac80211 data | |
1254 | * incorrect for the case that we receive an HE-MU | |
1255 | * transmission and *don't* have the HE phy data (due | |
1256 | * to the bits being used for TSF). This shouldn't | |
1257 | * happen though as management frames where we need | |
1258 | * the TSF/timers are not be transmitted in HE-MU. | |
1259 | */ | |
bdf180c8 | 1260 | u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK); |
74cf15cb | 1261 | u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; |
ffe9d734 JB |
1262 | u8 offs = 0; |
1263 | ||
1264 | rx_status->bw = RATE_INFO_BW_HE_RU; | |
1265 | ||
1266 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); | |
1267 | ||
1268 | switch (ru) { | |
1269 | case 0 ... 36: | |
1270 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26; | |
1271 | offs = ru; | |
1272 | break; | |
1273 | case 37 ... 52: | |
1274 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52; | |
1275 | offs = ru - 37; | |
1276 | break; | |
1277 | case 53 ... 60: | |
1278 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; | |
1279 | offs = ru - 53; | |
1280 | break; | |
1281 | case 61 ... 64: | |
1282 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242; | |
1283 | offs = ru - 61; | |
1284 | break; | |
1285 | case 65 ... 66: | |
1286 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484; | |
1287 | offs = ru - 65; | |
1288 | break; | |
1289 | case 67: | |
1290 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996; | |
1291 | break; | |
1292 | case 68: | |
1293 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996; | |
1294 | break; | |
1295 | } | |
1296 | he->data2 |= le16_encode_bits(offs, | |
1297 | IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET); | |
1298 | he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN | | |
1299 | IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN); | |
bdf180c8 | 1300 | if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80)) |
ffe9d734 JB |
1301 | he->data2 |= |
1302 | cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC); | |
1303 | ||
ffe9d734 JB |
1304 | #define CHECK_BW(bw) \ |
1305 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \ | |
74cf15cb JB |
1306 | RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \ |
1307 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \ | |
ffe9d734 | 1308 | RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS) |
74cf15cb JB |
1309 | CHECK_BW(20); |
1310 | CHECK_BW(40); | |
1311 | CHECK_BW(80); | |
1312 | CHECK_BW(160); | |
1313 | ||
1314 | if (he_mu) | |
ffe9d734 JB |
1315 | he_mu->flags2 |= |
1316 | le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, | |
1317 | rate_n_flags), | |
1318 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW); | |
74cf15cb JB |
1319 | else if (he_type == RATE_MCS_HE_TYPE_TRIG) |
1320 | he->data6 |= | |
1321 | cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) | | |
1322 | le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, | |
1323 | rate_n_flags), | |
1324 | IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW); | |
ffe9d734 JB |
1325 | } |
1326 | ||
59b8cf0c | 1327 | static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm, |
bdf180c8 | 1328 | struct iwl_mvm_rx_phy_data *phy_data, |
59b8cf0c JB |
1329 | struct ieee80211_radiotap_he *he, |
1330 | struct ieee80211_radiotap_he_mu *he_mu, | |
ffe9d734 | 1331 | struct ieee80211_rx_status *rx_status, |
bdf180c8 | 1332 | u32 rate_n_flags, int queue) |
59b8cf0c | 1333 | { |
6721039d | 1334 | switch (phy_data->info_type) { |
bdf180c8 ST |
1335 | case IWL_RX_PHY_INFO_TYPE_NONE: |
1336 | case IWL_RX_PHY_INFO_TYPE_CCK: | |
1337 | case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY: | |
bdf180c8 ST |
1338 | case IWL_RX_PHY_INFO_TYPE_HT: |
1339 | case IWL_RX_PHY_INFO_TYPE_VHT_SU: | |
1340 | case IWL_RX_PHY_INFO_TYPE_VHT_MU: | |
bdf180c8 ST |
1341 | return; |
1342 | case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: | |
1343 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN | | |
1344 | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN | | |
1345 | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN | | |
1346 | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN); | |
a197e6d1 | 1347 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1348 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1), |
1349 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1); | |
a197e6d1 | 1350 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1351 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2), |
1352 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2); | |
a197e6d1 | 1353 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1354 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3), |
1355 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3); | |
a197e6d1 | 1356 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, |
bdf180c8 ST |
1357 | IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4), |
1358 | IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4); | |
5a2abdca | 1359 | fallthrough; |
bdf180c8 ST |
1360 | case IWL_RX_PHY_INFO_TYPE_HE_SU: |
1361 | case IWL_RX_PHY_INFO_TYPE_HE_MU: | |
1362 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: | |
1363 | case IWL_RX_PHY_INFO_TYPE_HE_TB: | |
1364 | /* HE common */ | |
1365 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN | | |
bdf180c8 ST |
1366 | IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN | |
1367 | IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN); | |
1368 | he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN | | |
1369 | IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN | | |
1370 | IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN | | |
1371 | IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN); | |
1372 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1373 | IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK), | |
1374 | IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR); | |
7969454b ST |
1375 | if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB && |
1376 | phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) { | |
1377 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN); | |
1378 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
bdf180c8 | 1379 | IWL_RX_PHY_DATA0_HE_UPLINK), |
7969454b ST |
1380 | IEEE80211_RADIOTAP_HE_DATA3_UL_DL); |
1381 | } | |
bdf180c8 ST |
1382 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, |
1383 | IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM), | |
1384 | IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG); | |
bdf180c8 ST |
1385 | he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0, |
1386 | IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK), | |
1387 | IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD); | |
1388 | he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1389 | IWL_RX_PHY_DATA0_HE_PE_DISAMBIG), | |
1390 | IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG); | |
1391 | he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1, | |
1392 | IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK), | |
1393 | IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS); | |
1394 | he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1395 | IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK), | |
1396 | IEEE80211_RADIOTAP_HE_DATA6_TXOP); | |
1397 | he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1398 | IWL_RX_PHY_DATA0_HE_DOPPLER), | |
1399 | IEEE80211_RADIOTAP_HE_DATA6_DOPPLER); | |
1400 | break; | |
1401 | } | |
1402 | ||
2286a99c JB |
1403 | switch (phy_data->info_type) { |
1404 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: | |
1405 | case IWL_RX_PHY_INFO_TYPE_HE_MU: | |
1406 | case IWL_RX_PHY_INFO_TYPE_HE_SU: | |
1407 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN); | |
1408 | he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1409 | IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK), | |
1410 | IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE); | |
1411 | break; | |
1412 | default: | |
1413 | /* nothing here */ | |
1414 | break; | |
1415 | } | |
1416 | ||
6721039d | 1417 | switch (phy_data->info_type) { |
bdf180c8 | 1418 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: |
59b8cf0c | 1419 | he_mu->flags1 |= |
bdf180c8 ST |
1420 | le16_encode_bits(le16_get_bits(phy_data->d4, |
1421 | IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM), | |
59b8cf0c JB |
1422 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM); |
1423 | he_mu->flags1 |= | |
bdf180c8 ST |
1424 | le16_encode_bits(le16_get_bits(phy_data->d4, |
1425 | IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK), | |
59b8cf0c JB |
1426 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS); |
1427 | he_mu->flags2 |= | |
bdf180c8 ST |
1428 | le16_encode_bits(le16_get_bits(phy_data->d4, |
1429 | IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK), | |
1430 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW); | |
1431 | iwl_mvm_decode_he_mu_ext(mvm, phy_data, rate_n_flags, he_mu); | |
5a2abdca | 1432 | fallthrough; |
bdf180c8 | 1433 | case IWL_RX_PHY_INFO_TYPE_HE_MU: |
59b8cf0c | 1434 | he_mu->flags2 |= |
bdf180c8 ST |
1435 | le16_encode_bits(le32_get_bits(phy_data->d1, |
1436 | IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK), | |
1437 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS); | |
59b8cf0c | 1438 | he_mu->flags2 |= |
bdf180c8 ST |
1439 | le16_encode_bits(le32_get_bits(phy_data->d1, |
1440 | IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION), | |
1441 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP); | |
5a2abdca | 1442 | fallthrough; |
bdf180c8 ST |
1443 | case IWL_RX_PHY_INFO_TYPE_HE_TB: |
1444 | case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: | |
1445 | iwl_mvm_decode_he_phy_ru_alloc(phy_data, rate_n_flags, | |
ffe9d734 JB |
1446 | he, he_mu, rx_status); |
1447 | break; | |
bdf180c8 ST |
1448 | case IWL_RX_PHY_INFO_TYPE_HE_SU: |
1449 | he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN); | |
1450 | he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, | |
1451 | IWL_RX_PHY_DATA0_HE_BEAM_CHNG), | |
1452 | IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE); | |
1453 | break; | |
ffe9d734 JB |
1454 | default: |
1455 | /* nothing */ | |
1456 | break; | |
1457 | } | |
59b8cf0c JB |
1458 | } |
1459 | ||
c630b477 | 1460 | static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb, |
6721039d | 1461 | struct iwl_mvm_rx_phy_data *phy_data, |
c630b477 SS |
1462 | u32 rate_n_flags, u16 phy_info, int queue) |
1463 | { | |
1464 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
c630b477 SS |
1465 | struct ieee80211_radiotap_he *he = NULL; |
1466 | struct ieee80211_radiotap_he_mu *he_mu = NULL; | |
f9fe5793 | 1467 | u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; |
de8da230 | 1468 | u8 stbc, ltf; |
c630b477 SS |
1469 | static const struct ieee80211_radiotap_he known = { |
1470 | .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN | | |
1471 | IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN | | |
1472 | IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN | | |
1473 | IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN), | |
1474 | .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN | | |
1475 | IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN), | |
1476 | }; | |
1477 | static const struct ieee80211_radiotap_he_mu mu_known = { | |
1478 | .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN | | |
1479 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN | | |
1480 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN | | |
1481 | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN), | |
dabf9844 JB |
1482 | .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN | |
1483 | IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN), | |
c630b477 | 1484 | }; |
c630b477 SS |
1485 | |
1486 | he = skb_put_data(skb, &known, sizeof(known)); | |
c630b477 SS |
1487 | rx_status->flag |= RX_FLAG_RADIOTAP_HE; |
1488 | ||
6721039d ST |
1489 | if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU || |
1490 | phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) { | |
bdf180c8 | 1491 | he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known)); |
bdf180c8 | 1492 | rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU; |
c630b477 SS |
1493 | } |
1494 | ||
937c2652 ST |
1495 | /* report the AMPDU-EOF bit on single frames */ |
1496 | if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) { | |
1497 | rx_status->flag |= RX_FLAG_AMPDU_DETAILS; | |
1498 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; | |
1499 | if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF)) | |
1500 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; | |
c630b477 SS |
1501 | } |
1502 | ||
bdf180c8 | 1503 | if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) |
6721039d | 1504 | iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status, |
bdf180c8 | 1505 | rate_n_flags, queue); |
59b8cf0c | 1506 | |
c630b477 | 1507 | /* update aggregation data for monitor sake on default queue */ |
bdf180c8 ST |
1508 | if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) && |
1509 | (phy_info & IWL_RX_MPDU_PHY_AMPDU)) { | |
c630b477 SS |
1510 | bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE; |
1511 | ||
1512 | /* toggle is switched whenever new aggregation starts */ | |
937c2652 | 1513 | if (toggle_bit != mvm->ampdu_toggle) { |
c630b477 | 1514 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; |
6721039d | 1515 | if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF)) |
c630b477 SS |
1516 | rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; |
1517 | } | |
1518 | } | |
1519 | ||
1520 | if (he_type == RATE_MCS_HE_TYPE_EXT_SU && | |
1521 | rate_n_flags & RATE_MCS_HE_106T_MSK) { | |
1522 | rx_status->bw = RATE_INFO_BW_HE_RU; | |
1523 | rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; | |
1524 | } | |
dabf9844 | 1525 | |
ffe9d734 JB |
1526 | /* actually data is filled in mac80211 */ |
1527 | if (he_type == RATE_MCS_HE_TYPE_SU || | |
1528 | he_type == RATE_MCS_HE_TYPE_EXT_SU) | |
dabf9844 JB |
1529 | he->data1 |= |
1530 | cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); | |
1531 | ||
c630b477 SS |
1532 | stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS; |
1533 | rx_status->nss = | |
1534 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> | |
1535 | RATE_VHT_MCS_NSS_POS) + 1; | |
1536 | rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; | |
1537 | rx_status->encoding = RX_ENC_HE; | |
1538 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; | |
1539 | if (rate_n_flags & RATE_MCS_BF_MSK) | |
1540 | rx_status->enc_flags |= RX_ENC_FLAG_BF; | |
1541 | ||
1542 | rx_status->he_dcm = | |
1543 | !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK); | |
1544 | ||
1545 | #define CHECK_TYPE(F) \ | |
1546 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \ | |
1547 | (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS)) | |
1548 | ||
1549 | CHECK_TYPE(SU); | |
1550 | CHECK_TYPE(EXT_SU); | |
1551 | CHECK_TYPE(MU); | |
1552 | CHECK_TYPE(TRIG); | |
1553 | ||
1554 | he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS); | |
1555 | ||
caf3216f | 1556 | if (rate_n_flags & RATE_MCS_BF_MSK) |
c630b477 SS |
1557 | he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF); |
1558 | ||
1559 | switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >> | |
1560 | RATE_MCS_HE_GI_LTF_POS) { | |
1561 | case 0: | |
93cc712a JB |
1562 | if (he_type == RATE_MCS_HE_TYPE_TRIG) |
1563 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; | |
1564 | else | |
1565 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; | |
de8da230 JB |
1566 | if (he_type == RATE_MCS_HE_TYPE_MU) |
1567 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; | |
1568 | else | |
1569 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X; | |
c630b477 SS |
1570 | break; |
1571 | case 1: | |
93cc712a JB |
1572 | if (he_type == RATE_MCS_HE_TYPE_TRIG) |
1573 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; | |
1574 | else | |
1575 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; | |
de8da230 | 1576 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; |
c630b477 SS |
1577 | break; |
1578 | case 2: | |
93cc712a JB |
1579 | if (he_type == RATE_MCS_HE_TYPE_TRIG) { |
1580 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2; | |
de8da230 | 1581 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; |
93cc712a JB |
1582 | } else { |
1583 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; | |
de8da230 | 1584 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; |
93cc712a | 1585 | } |
c630b477 SS |
1586 | break; |
1587 | case 3: | |
93cc712a JB |
1588 | if ((he_type == RATE_MCS_HE_TYPE_SU || |
1589 | he_type == RATE_MCS_HE_TYPE_EXT_SU) && | |
1590 | rate_n_flags & RATE_MCS_SGI_MSK) | |
c630b477 SS |
1591 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; |
1592 | else | |
1593 | rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2; | |
de8da230 | 1594 | ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; |
c630b477 SS |
1595 | break; |
1596 | } | |
1597 | ||
bdf180c8 ST |
1598 | he->data5 |= le16_encode_bits(ltf, |
1599 | IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE); | |
c630b477 SS |
1600 | } |
1601 | ||
6721039d ST |
1602 | static void iwl_mvm_decode_lsig(struct sk_buff *skb, |
1603 | struct iwl_mvm_rx_phy_data *phy_data) | |
1604 | { | |
1605 | struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); | |
1606 | struct ieee80211_radiotap_lsig *lsig; | |
1607 | ||
1608 | switch (phy_data->info_type) { | |
1609 | case IWL_RX_PHY_INFO_TYPE_HT: | |
1610 | case IWL_RX_PHY_INFO_TYPE_VHT_SU: | |
1611 | case IWL_RX_PHY_INFO_TYPE_VHT_MU: | |
1612 | case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: | |
1613 | case IWL_RX_PHY_INFO_TYPE_HE_SU: | |
1614 | case IWL_RX_PHY_INFO_TYPE_HE_MU: | |
1615 | case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: | |
1616 | case IWL_RX_PHY_INFO_TYPE_HE_TB: | |
1617 | lsig = skb_put(skb, sizeof(*lsig)); | |
1618 | lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN); | |
1619 | lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1, | |
1620 | IWL_RX_PHY_DATA1_LSIG_LEN_MASK), | |
1621 | IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH); | |
1622 | rx_status->flag |= RX_FLAG_RADIOTAP_LSIG; | |
1623 | break; | |
1624 | default: | |
1625 | break; | |
1626 | } | |
1627 | } | |
1628 | ||
65b9425c TM |
1629 | static inline u8 iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band) |
1630 | { | |
1631 | switch (phy_band) { | |
1632 | case PHY_BAND_24: | |
1633 | return NL80211_BAND_2GHZ; | |
1634 | case PHY_BAND_5: | |
1635 | return NL80211_BAND_5GHZ; | |
eae94cf8 LC |
1636 | case PHY_BAND_6: |
1637 | return NL80211_BAND_6GHZ; | |
65b9425c TM |
1638 | default: |
1639 | WARN_ONCE(1, "Unsupported phy band (%u)\n", phy_band); | |
1640 | return NL80211_BAND_5GHZ; | |
1641 | } | |
1642 | } | |
1643 | ||
e5d153ec EG |
1644 | struct iwl_rx_sta_csa { |
1645 | bool all_sta_unblocked; | |
1646 | struct ieee80211_vif *vif; | |
1647 | }; | |
1648 | ||
1649 | static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta) | |
1650 | { | |
1651 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1652 | struct iwl_rx_sta_csa *rx_sta_csa = data; | |
1653 | ||
1654 | if (mvmsta->vif != rx_sta_csa->vif) | |
1655 | return; | |
1656 | ||
1657 | if (mvmsta->disable_tx) | |
1658 | rx_sta_csa->all_sta_unblocked = false; | |
1659 | } | |
1660 | ||
780e87c2 JB |
1661 | void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi, |
1662 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
1663 | { | |
1664 | struct ieee80211_rx_status *rx_status; | |
1665 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1666 | struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; | |
18ead597 | 1667 | struct ieee80211_hdr *hdr; |
b8aba27c | 1668 | u32 len; |
efc0ec5a | 1669 | u32 pkt_len = iwl_rx_packet_payload_len(pkt); |
18ead597 | 1670 | u32 rate_n_flags, gp2_on_air_rise; |
b8aba27c | 1671 | u16 phy_info; |
780e87c2 JB |
1672 | struct ieee80211_sta *sta = NULL; |
1673 | struct sk_buff *skb; | |
18ead597 | 1674 | u8 crypt_len = 0, channel, energy_a, energy_b; |
18ead597 | 1675 | size_t desc_size; |
6721039d | 1676 | struct iwl_mvm_rx_phy_data phy_data = { |
6721039d ST |
1677 | .info_type = IWL_RX_PHY_INFO_TYPE_NONE, |
1678 | }; | |
9bf13bee | 1679 | bool csi = false; |
780e87c2 | 1680 | |
364a1ab9 SM |
1681 | if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) |
1682 | return; | |
1683 | ||
b8aba27c JB |
1684 | if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) |
1685 | desc_size = sizeof(*desc); | |
1686 | else | |
1687 | desc_size = IWL_RX_DESC_SIZE_V1; | |
1688 | ||
1689 | if (unlikely(pkt_len < desc_size)) { | |
1690 | IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n"); | |
1691 | return; | |
1692 | } | |
1693 | ||
3681021f | 1694 | if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { |
18ead597 GBA |
1695 | rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags); |
1696 | channel = desc->v3.channel; | |
1697 | gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise); | |
1698 | energy_a = desc->v3.energy_a; | |
1699 | energy_b = desc->v3.energy_b; | |
6721039d ST |
1700 | |
1701 | phy_data.d0 = desc->v3.phy_data0; | |
1702 | phy_data.d1 = desc->v3.phy_data1; | |
1703 | phy_data.d2 = desc->v3.phy_data2; | |
1704 | phy_data.d3 = desc->v3.phy_data3; | |
18ead597 GBA |
1705 | } else { |
1706 | rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags); | |
1707 | channel = desc->v1.channel; | |
1708 | gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise); | |
1709 | energy_a = desc->v1.energy_a; | |
1710 | energy_b = desc->v1.energy_b; | |
6721039d ST |
1711 | |
1712 | phy_data.d0 = desc->v1.phy_data0; | |
1713 | phy_data.d1 = desc->v1.phy_data1; | |
1714 | phy_data.d2 = desc->v1.phy_data2; | |
1715 | phy_data.d3 = desc->v1.phy_data3; | |
18ead597 GBA |
1716 | } |
1717 | ||
b8aba27c | 1718 | len = le16_to_cpu(desc->mpdu_len); |
6721039d | 1719 | |
b8aba27c | 1720 | if (unlikely(len + desc_size > pkt_len)) { |
efc0ec5a JB |
1721 | IWL_DEBUG_DROP(mvm, "FW lied about packet len\n"); |
1722 | return; | |
1723 | } | |
1724 | ||
b8aba27c JB |
1725 | phy_info = le16_to_cpu(desc->phy_info); |
1726 | phy_data.d4 = desc->phy_data4; | |
1727 | ||
1728 | if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) | |
1729 | phy_data.info_type = | |
1730 | le32_get_bits(phy_data.d1, | |
1731 | IWL_RX_PHY_DATA1_INFO_TYPE_MASK); | |
1732 | ||
18ead597 | 1733 | hdr = (void *)(pkt->data + desc_size); |
780e87c2 JB |
1734 | /* Dont use dev_alloc_skb(), we'll have enough headroom once |
1735 | * ieee80211_hdr pulled. | |
1736 | */ | |
1737 | skb = alloc_skb(128, GFP_ATOMIC); | |
1738 | if (!skb) { | |
1739 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
1740 | return; | |
1741 | } | |
1742 | ||
1e5b7750 JB |
1743 | if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) { |
1744 | /* | |
1745 | * If the device inserted padding it means that (it thought) | |
1746 | * the 802.11 header wasn't a multiple of 4 bytes long. In | |
1747 | * this case, reserve two bytes at the start of the SKB to | |
1748 | * align the payload properly in case we end up copying it. | |
1749 | */ | |
1750 | skb_reserve(skb, 2); | |
1751 | } | |
1752 | ||
780e87c2 JB |
1753 | rx_status = IEEE80211_SKB_RXCB(skb); |
1754 | ||
dabf9844 JB |
1755 | /* This may be overridden by iwl_mvm_rx_he() to HE_RU */ |
1756 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
1757 | case RATE_MCS_CHAN_WIDTH_20: | |
1758 | break; | |
1759 | case RATE_MCS_CHAN_WIDTH_40: | |
1760 | rx_status->bw = RATE_INFO_BW_40; | |
1761 | break; | |
1762 | case RATE_MCS_CHAN_WIDTH_80: | |
1763 | rx_status->bw = RATE_INFO_BW_80; | |
1764 | break; | |
1765 | case RATE_MCS_CHAN_WIDTH_160: | |
1766 | rx_status->bw = RATE_INFO_BW_160; | |
1767 | break; | |
1768 | } | |
1769 | ||
c630b477 | 1770 | if (rate_n_flags & RATE_MCS_HE_MSK) |
6721039d ST |
1771 | iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags, |
1772 | phy_info, queue); | |
1773 | ||
1774 | iwl_mvm_decode_lsig(skb, &phy_data); | |
514c3069 | 1775 | |
780e87c2 JB |
1776 | /* |
1777 | * Keep packets with CRC errors (and with overrun) for monitor mode | |
1778 | * (otherwise the firmware discards them) but mark them as bad. | |
1779 | */ | |
e365e7de JB |
1780 | if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) || |
1781 | !(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) { | |
780e87c2 | 1782 | IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", |
e365e7de | 1783 | le32_to_cpu(desc->status)); |
780e87c2 JB |
1784 | rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; |
1785 | } | |
fbe41127 | 1786 | /* set the preamble flag if appropriate */ |
486af863 JB |
1787 | if (rate_n_flags & RATE_MCS_CCK_MSK && |
1788 | phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE) | |
7fdd69c5 | 1789 | rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE; |
fbe41127 SS |
1790 | |
1791 | if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) { | |
18ead597 GBA |
1792 | u64 tsf_on_air_rise; |
1793 | ||
286ca8eb | 1794 | if (mvm->trans->trans_cfg->device_family >= |
3681021f | 1795 | IWL_DEVICE_FAMILY_AX210) |
18ead597 GBA |
1796 | tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise); |
1797 | else | |
1798 | tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise); | |
1799 | ||
1800 | rx_status->mactime = tsf_on_air_rise; | |
fbe41127 SS |
1801 | /* TSF as indicated by the firmware is at INA time */ |
1802 | rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; | |
bd6fc655 LK |
1803 | } |
1804 | ||
18ead597 | 1805 | rx_status->device_timestamp = gp2_on_air_rise; |
65b9425c TM |
1806 | if (iwl_mvm_is_band_in_rx_supported(mvm)) { |
1807 | u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx); | |
1808 | ||
1809 | rx_status->band = iwl_mvm_nl80211_band_from_rx_msdu(band); | |
1810 | } else { | |
1811 | rx_status->band = channel > 14 ? NL80211_BAND_5GHZ : | |
1812 | NL80211_BAND_2GHZ; | |
1813 | } | |
18ead597 | 1814 | rx_status->freq = ieee80211_channel_to_frequency(channel, |
780e87c2 | 1815 | rx_status->band); |
18ead597 GBA |
1816 | iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a, |
1817 | energy_b); | |
fbe41127 SS |
1818 | |
1819 | /* update aggregation data for monitor sake on default queue */ | |
1820 | if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) { | |
1821 | bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE; | |
1822 | ||
1823 | rx_status->flag |= RX_FLAG_AMPDU_DETAILS; | |
5213e8a8 JB |
1824 | /* |
1825 | * Toggle is switched whenever new aggregation starts. Make | |
1826 | * sure ampdu_reference is never 0 so we can later use it to | |
1827 | * see if the frame was really part of an A-MPDU or not. | |
1828 | */ | |
fbe41127 SS |
1829 | if (toggle_bit != mvm->ampdu_toggle) { |
1830 | mvm->ampdu_ref++; | |
5213e8a8 JB |
1831 | if (mvm->ampdu_ref == 0) |
1832 | mvm->ampdu_ref++; | |
fbe41127 SS |
1833 | mvm->ampdu_toggle = toggle_bit; |
1834 | } | |
1f7698ab | 1835 | rx_status->ampdu_reference = mvm->ampdu_ref; |
fbe41127 | 1836 | } |
780e87c2 | 1837 | |
3864be55 LC |
1838 | if (unlikely(mvm->monitor_on)) |
1839 | iwl_mvm_add_rtap_sniffer_config(mvm, skb); | |
1840 | ||
780e87c2 JB |
1841 | rcu_read_lock(); |
1842 | ||
e365e7de JB |
1843 | if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) { |
1844 | u8 id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID); | |
780e87c2 | 1845 | |
be9ae34e | 1846 | if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) { |
780e87c2 JB |
1847 | sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); |
1848 | if (IS_ERR(sta)) | |
1849 | sta = NULL; | |
1850 | } | |
1851 | } else if (!is_multicast_ether_addr(hdr->addr2)) { | |
1852 | /* | |
1853 | * This is fine since we prevent two stations with the same | |
1854 | * address from being added. | |
1855 | */ | |
1856 | sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); | |
1857 | } | |
1858 | ||
b1fdc250 JB |
1859 | if (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_info, desc, |
1860 | le32_to_cpu(pkt->len_n_flags), queue, | |
1861 | &crypt_len)) { | |
1862 | kfree_skb(skb); | |
1863 | goto out; | |
1864 | } | |
1865 | ||
780e87c2 JB |
1866 | if (sta) { |
1867 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
d3a108a4 AO |
1868 | struct ieee80211_vif *tx_blocked_vif = |
1869 | rcu_dereference(mvm->csa_tx_blocked_vif); | |
10b2b201 SS |
1870 | u8 baid = (u8)((le32_to_cpu(desc->reorder_data) & |
1871 | IWL_RX_MPDU_REORDER_BAID_MASK) >> | |
1872 | IWL_RX_MPDU_REORDER_BAID_SHIFT); | |
6c042d75 SS |
1873 | struct iwl_fw_dbg_trigger_tlv *trig; |
1874 | struct ieee80211_vif *vif = mvmsta->vif; | |
780e87c2 | 1875 | |
7d9d0d56 LC |
1876 | if (!mvm->tcm.paused && len >= sizeof(*hdr) && |
1877 | !is_multicast_ether_addr(hdr->addr1) && | |
1878 | ieee80211_is_data(hdr->frame_control) && | |
1879 | time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD)) | |
1880 | schedule_delayed_work(&mvm->tcm.work, 0); | |
1881 | ||
780e87c2 JB |
1882 | /* |
1883 | * We have tx blocked stations (with CS bit). If we heard | |
1884 | * frames from a blocked station on a new channel we can | |
1885 | * TX to it again. | |
1886 | */ | |
6c042d75 | 1887 | if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) { |
d3a108a4 AO |
1888 | struct iwl_mvm_vif *mvmvif = |
1889 | iwl_mvm_vif_from_mac80211(tx_blocked_vif); | |
e5d153ec EG |
1890 | struct iwl_rx_sta_csa rx_sta_csa = { |
1891 | .all_sta_unblocked = true, | |
1892 | .vif = tx_blocked_vif, | |
1893 | }; | |
d3a108a4 AO |
1894 | |
1895 | if (mvmvif->csa_target_freq == rx_status->freq) | |
1896 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, | |
1897 | false); | |
e5d153ec EG |
1898 | ieee80211_iterate_stations_atomic(mvm->hw, |
1899 | iwl_mvm_rx_get_sta_block_tx, | |
1900 | &rx_sta_csa); | |
1901 | ||
1902 | if (rx_sta_csa.all_sta_unblocked) { | |
1903 | RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); | |
1904 | /* Unblock BCAST / MCAST station */ | |
1905 | iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); | |
1906 | cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); | |
1907 | } | |
d3a108a4 | 1908 | } |
780e87c2 | 1909 | |
ecaf71de | 1910 | rs_update_last_rssi(mvm, mvmsta, rx_status); |
780e87c2 | 1911 | |
6c042d75 SS |
1912 | trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, |
1913 | ieee80211_vif_to_wdev(vif), | |
1914 | FW_DBG_TRIGGER_RSSI); | |
1915 | ||
1916 | if (trig && ieee80211_is_beacon(hdr->frame_control)) { | |
780e87c2 | 1917 | struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; |
780e87c2 JB |
1918 | s32 rssi; |
1919 | ||
780e87c2 JB |
1920 | rssi_trig = (void *)trig->data; |
1921 | rssi = le32_to_cpu(rssi_trig->rssi); | |
1922 | ||
6c042d75 | 1923 | if (rx_status->signal < rssi) |
7174beb6 JB |
1924 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, |
1925 | NULL); | |
780e87c2 JB |
1926 | } |
1927 | ||
780e87c2 | 1928 | if (ieee80211_is_data(hdr->frame_control)) |
59ca9572 | 1929 | iwl_mvm_rx_csum(mvm, sta, skb, pkt); |
a571f5f6 | 1930 | |
5ab2ba93 | 1931 | if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) { |
a571f5f6 | 1932 | kfree_skb(skb); |
cb2de6bb | 1933 | goto out; |
a571f5f6 | 1934 | } |
62d23403 SS |
1935 | |
1936 | /* | |
1937 | * Our hardware de-aggregates AMSDUs but copies the mac header | |
1938 | * as it to the de-aggregated MPDUs. We need to turn off the | |
1939 | * AMSDU bit in the QoS control ourselves. | |
9dfa2151 | 1940 | * In addition, HW reverses addr3 and addr4 - reverse it back. |
62d23403 SS |
1941 | */ |
1942 | if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) && | |
1943 | !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) { | |
1944 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
1945 | ||
1946 | *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; | |
a56cb4f0 | 1947 | |
286ca8eb | 1948 | if (mvm->trans->trans_cfg->device_family == |
e4d72208 SS |
1949 | IWL_DEVICE_FAMILY_9000) { |
1950 | iwl_mvm_flip_address(hdr->addr3); | |
9dfa2151 | 1951 | |
e4d72208 SS |
1952 | if (ieee80211_has_a4(hdr->frame_control)) |
1953 | iwl_mvm_flip_address(hdr->addr4); | |
9dfa2151 | 1954 | } |
62d23403 | 1955 | } |
5d43eab6 SS |
1956 | if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) { |
1957 | u32 reorder_data = le32_to_cpu(desc->reorder_data); | |
1958 | ||
1959 | iwl_mvm_agg_rx_received(mvm, reorder_data, baid); | |
1960 | } | |
780e87c2 JB |
1961 | } |
1962 | ||
4c59ff5a SS |
1963 | if (!(rate_n_flags & RATE_MCS_CCK_MSK) && |
1964 | rate_n_flags & RATE_MCS_SGI_MSK) | |
7fdd69c5 | 1965 | rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; |
780e87c2 | 1966 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) |
7fdd69c5 | 1967 | rx_status->enc_flags |= RX_ENC_FLAG_HT_GF; |
780e87c2 | 1968 | if (rate_n_flags & RATE_MCS_LDPC_MSK) |
7fdd69c5 | 1969 | rx_status->enc_flags |= RX_ENC_FLAG_LDPC; |
780e87c2 | 1970 | if (rate_n_flags & RATE_MCS_HT_MSK) { |
77e40945 | 1971 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> |
780e87c2 | 1972 | RATE_MCS_STBC_POS; |
da6a4352 | 1973 | rx_status->encoding = RX_ENC_HT; |
780e87c2 | 1974 | rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; |
7fdd69c5 | 1975 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; |
780e87c2 | 1976 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { |
77e40945 | 1977 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> |
780e87c2 | 1978 | RATE_MCS_STBC_POS; |
8613c948 | 1979 | rx_status->nss = |
780e87c2 JB |
1980 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> |
1981 | RATE_VHT_MCS_NSS_POS) + 1; | |
1982 | rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; | |
da6a4352 | 1983 | rx_status->encoding = RX_ENC_VHT; |
7fdd69c5 | 1984 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; |
780e87c2 | 1985 | if (rate_n_flags & RATE_MCS_BF_MSK) |
7fdd69c5 | 1986 | rx_status->enc_flags |= RX_ENC_FLAG_BF; |
c630b477 | 1987 | } else if (!(rate_n_flags & RATE_MCS_HE_MSK)) { |
cb2de6bb SS |
1988 | int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, |
1989 | rx_status->band); | |
1990 | ||
1991 | if (WARN(rate < 0 || rate > 0xFF, | |
1992 | "Invalid rate flags 0x%x, band %d,\n", | |
1993 | rate_n_flags, rx_status->band)) { | |
1994 | kfree_skb(skb); | |
1995 | goto out; | |
1996 | } | |
1997 | rx_status->rate_idx = rate; | |
780e87c2 JB |
1998 | } |
1999 | ||
fbe41127 SS |
2000 | /* management stuff on default queue */ |
2001 | if (!queue) { | |
2002 | if (unlikely((ieee80211_is_beacon(hdr->frame_control) || | |
2003 | ieee80211_is_probe_resp(hdr->frame_control)) && | |
2004 | mvm->sched_scan_pass_all == | |
2005 | SCHED_SCAN_PASS_ALL_ENABLED)) | |
2006 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND; | |
2007 | ||
2008 | if (unlikely(ieee80211_is_beacon(hdr->frame_control) || | |
2009 | ieee80211_is_probe_resp(hdr->frame_control))) | |
9285ec4c | 2010 | rx_status->boottime_ns = ktime_get_boottime_ns(); |
fbe41127 | 2011 | } |
780e87c2 | 2012 | |
de1887c0 LC |
2013 | if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) { |
2014 | kfree_skb(skb); | |
2015 | goto out; | |
2016 | } | |
2017 | ||
b915c101 | 2018 | if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc)) |
9bf13bee JB |
2019 | iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, |
2020 | sta, csi); | |
cb2de6bb | 2021 | out: |
f5e28eac | 2022 | rcu_read_unlock(); |
780e87c2 | 2023 | } |
585a6fcc | 2024 | |
d47cdb88 JB |
2025 | void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi, |
2026 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
bf9dfeda ST |
2027 | { |
2028 | struct ieee80211_rx_status *rx_status; | |
2029 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2030 | struct iwl_rx_no_data *desc = (void *)pkt->data; | |
2031 | u32 rate_n_flags = le32_to_cpu(desc->rate); | |
2032 | u32 gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time); | |
2033 | u32 rssi = le32_to_cpu(desc->rssi); | |
2034 | u32 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK; | |
2035 | u16 phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD; | |
2036 | struct ieee80211_sta *sta = NULL; | |
2037 | struct sk_buff *skb; | |
2038 | u8 channel, energy_a, energy_b; | |
2039 | struct iwl_mvm_rx_phy_data phy_data = { | |
2040 | .d0 = desc->phy_info[0], | |
2041 | .info_type = IWL_RX_PHY_INFO_TYPE_NONE, | |
2042 | }; | |
2043 | ||
1e1a58be JB |
2044 | if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*desc))) |
2045 | return; | |
2046 | ||
bf9dfeda ST |
2047 | if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) |
2048 | return; | |
2049 | ||
bf9dfeda ST |
2050 | energy_a = (rssi & RX_NO_DATA_CHAIN_A_MSK) >> RX_NO_DATA_CHAIN_A_POS; |
2051 | energy_b = (rssi & RX_NO_DATA_CHAIN_B_MSK) >> RX_NO_DATA_CHAIN_B_POS; | |
2052 | channel = (rssi & RX_NO_DATA_CHANNEL_MSK) >> RX_NO_DATA_CHANNEL_POS; | |
2053 | ||
2054 | phy_data.info_type = | |
2055 | le32_get_bits(desc->phy_info[1], | |
2056 | IWL_RX_PHY_DATA1_INFO_TYPE_MASK); | |
2057 | ||
2058 | /* Dont use dev_alloc_skb(), we'll have enough headroom once | |
2059 | * ieee80211_hdr pulled. | |
2060 | */ | |
2061 | skb = alloc_skb(128, GFP_ATOMIC); | |
2062 | if (!skb) { | |
2063 | IWL_ERR(mvm, "alloc_skb failed\n"); | |
2064 | return; | |
2065 | } | |
2066 | ||
2067 | rx_status = IEEE80211_SKB_RXCB(skb); | |
2068 | ||
2069 | /* 0-length PSDU */ | |
2070 | rx_status->flag |= RX_FLAG_NO_PSDU; | |
d47cdb88 JB |
2071 | |
2072 | switch (info_type) { | |
2073 | case RX_NO_DATA_INFO_TYPE_NDP: | |
2074 | rx_status->zero_length_psdu_type = | |
2075 | IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING; | |
2076 | break; | |
2077 | case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED: | |
2078 | case RX_NO_DATA_INFO_TYPE_HE_TB_UNMATCHED: | |
2079 | rx_status->zero_length_psdu_type = | |
2080 | IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED; | |
2081 | break; | |
2082 | default: | |
2083 | rx_status->zero_length_psdu_type = | |
2084 | IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR; | |
2085 | break; | |
2086 | } | |
bf9dfeda ST |
2087 | |
2088 | /* This may be overridden by iwl_mvm_rx_he() to HE_RU */ | |
2089 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
2090 | case RATE_MCS_CHAN_WIDTH_20: | |
2091 | break; | |
2092 | case RATE_MCS_CHAN_WIDTH_40: | |
2093 | rx_status->bw = RATE_INFO_BW_40; | |
2094 | break; | |
2095 | case RATE_MCS_CHAN_WIDTH_80: | |
2096 | rx_status->bw = RATE_INFO_BW_80; | |
2097 | break; | |
2098 | case RATE_MCS_CHAN_WIDTH_160: | |
2099 | rx_status->bw = RATE_INFO_BW_160; | |
2100 | break; | |
2101 | } | |
2102 | ||
2103 | if (rate_n_flags & RATE_MCS_HE_MSK) | |
2104 | iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags, | |
2105 | phy_info, queue); | |
2106 | ||
2107 | iwl_mvm_decode_lsig(skb, &phy_data); | |
2108 | ||
2109 | rx_status->device_timestamp = gp2_on_air_rise; | |
2110 | rx_status->band = channel > 14 ? NL80211_BAND_5GHZ : | |
2111 | NL80211_BAND_2GHZ; | |
2112 | rx_status->freq = ieee80211_channel_to_frequency(channel, | |
2113 | rx_status->band); | |
2114 | iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a, | |
2115 | energy_b); | |
2116 | ||
2117 | rcu_read_lock(); | |
2118 | ||
2119 | if (!(rate_n_flags & RATE_MCS_CCK_MSK) && | |
2120 | rate_n_flags & RATE_MCS_SGI_MSK) | |
2121 | rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; | |
2122 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) | |
2123 | rx_status->enc_flags |= RX_ENC_FLAG_HT_GF; | |
2124 | if (rate_n_flags & RATE_MCS_LDPC_MSK) | |
2125 | rx_status->enc_flags |= RX_ENC_FLAG_LDPC; | |
2126 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
2127 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> | |
2128 | RATE_MCS_STBC_POS; | |
2129 | rx_status->encoding = RX_ENC_HT; | |
2130 | rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; | |
2131 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; | |
2132 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { | |
2133 | u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> | |
2134 | RATE_MCS_STBC_POS; | |
bf9dfeda ST |
2135 | rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; |
2136 | rx_status->encoding = RX_ENC_VHT; | |
2137 | rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; | |
2138 | if (rate_n_flags & RATE_MCS_BF_MSK) | |
2139 | rx_status->enc_flags |= RX_ENC_FLAG_BF; | |
c97781d1 ST |
2140 | /* |
2141 | * take the nss from the rx_vec since the rate_n_flags has | |
2142 | * only 2 bits for the nss which gives a max of 4 ss but | |
2143 | * there may be up to 8 spatial streams | |
2144 | */ | |
2145 | rx_status->nss = | |
2146 | le32_get_bits(desc->rx_vec[0], | |
2147 | RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1; | |
2148 | } else if (rate_n_flags & RATE_MCS_HE_MSK) { | |
2149 | rx_status->nss = | |
2150 | le32_get_bits(desc->rx_vec[0], | |
2151 | RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1; | |
2152 | } else { | |
bf9dfeda ST |
2153 | int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, |
2154 | rx_status->band); | |
2155 | ||
2156 | if (WARN(rate < 0 || rate > 0xFF, | |
2157 | "Invalid rate flags 0x%x, band %d,\n", | |
2158 | rate_n_flags, rx_status->band)) { | |
2159 | kfree_skb(skb); | |
2160 | goto out; | |
2161 | } | |
2162 | rx_status->rate_idx = rate; | |
2163 | } | |
2164 | ||
ed714460 | 2165 | ieee80211_rx_napi(mvm->hw, sta, skb, napi); |
bf9dfeda ST |
2166 | out: |
2167 | rcu_read_unlock(); | |
2168 | } | |
c61b655a | 2169 | |
a338384b | 2170 | void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi, |
585a6fcc SS |
2171 | struct iwl_rx_cmd_buffer *rxb, int queue) |
2172 | { | |
a338384b SS |
2173 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
2174 | struct iwl_frame_release *release = (void *)pkt->data; | |
a338384b | 2175 | |
1e1a58be JB |
2176 | if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release))) |
2177 | return; | |
2178 | ||
c61b655a | 2179 | iwl_mvm_release_frames_from_notif(mvm, napi, release->baid, |
ecd09ddc EG |
2180 | le16_to_cpu(release->nssn), |
2181 | queue, 0); | |
585a6fcc | 2182 | } |
fe69b7d1 JB |
2183 | |
2184 | void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi, | |
2185 | struct iwl_rx_cmd_buffer *rxb, int queue) | |
2186 | { | |
2187 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2188 | struct iwl_bar_frame_release *release = (void *)pkt->data; | |
2189 | unsigned int baid = le32_get_bits(release->ba_info, | |
2190 | IWL_BAR_FRAME_RELEASE_BAID_MASK); | |
2191 | unsigned int nssn = le32_get_bits(release->ba_info, | |
2192 | IWL_BAR_FRAME_RELEASE_NSSN_MASK); | |
2193 | unsigned int sta_id = le32_get_bits(release->sta_tid, | |
2194 | IWL_BAR_FRAME_RELEASE_STA_MASK); | |
2195 | unsigned int tid = le32_get_bits(release->sta_tid, | |
2196 | IWL_BAR_FRAME_RELEASE_TID_MASK); | |
2197 | struct iwl_mvm_baid_data *baid_data; | |
2198 | ||
1e1a58be JB |
2199 | if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release))) |
2200 | return; | |
2201 | ||
fe69b7d1 JB |
2202 | if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID || |
2203 | baid >= ARRAY_SIZE(mvm->baid_map))) | |
2204 | return; | |
2205 | ||
2206 | rcu_read_lock(); | |
2207 | baid_data = rcu_dereference(mvm->baid_map[baid]); | |
2208 | if (!baid_data) { | |
2209 | IWL_DEBUG_RX(mvm, | |
2210 | "Got valid BAID %d but not allocated, invalid BAR release!\n", | |
2211 | baid); | |
2212 | goto out; | |
2213 | } | |
2214 | ||
2215 | if (WARN(tid != baid_data->tid || sta_id != baid_data->sta_id, | |
2216 | "baid 0x%x is mapped to sta:%d tid:%d, but BAR release received for sta:%d tid:%d\n", | |
2217 | baid, baid_data->sta_id, baid_data->tid, sta_id, | |
2218 | tid)) | |
2219 | goto out; | |
2220 | ||
2221 | iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue, 0); | |
2222 | out: | |
2223 | rcu_read_unlock(); | |
2224 | } |