]> git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blob - drivers/net/wireless/ath/ath10k/htt_rx.c
projects / mirror_ubuntu-hirsute-kernel.git / blob
? search:


b3b357b82f6fc5ed33662f4d740b6809328600be
[mirror_ubuntu-hirsute-kernel.git] / drivers / net / wireless / ath / ath10k / htt_rx.c
1 // SPDX-License-Identifier: ISC
2 /*
3 * Copyright (c) 2005-2011 Atheros Communications Inc.
4 * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
5 * Copyright (c) 2018, The Linux Foundation. All rights reserved.
6 */
7
8 #include "core.h"
9 #include "htc.h"
10 #include "htt.h"
11 #include "txrx.h"
12 #include "debug.h"
13 #include "trace.h"
14 #include "mac.h"
15
16 #include <linux/log2.h>
17 #include <linux/bitfield.h>
18
19 /* when under memory pressure rx ring refill may fail and needs a retry */
20 #define HTT_RX_RING_REFILL_RETRY_MS 50
21
22 #define HTT_RX_RING_REFILL_RESCHED_MS 5
23
24 static int ath10k_htt_rx_get_csum_state(struct sk_buff *skb);
25
26 static struct sk_buff *
27 ath10k_htt_rx_find_skb_paddr(struct ath10k *ar, u64 paddr)
28 {
29 struct ath10k_skb_rxcb *rxcb;
30
31 hash_for_each_possible(ar->htt.rx_ring.skb_table, rxcb, hlist, paddr)
32 if (rxcb->paddr == paddr)
33 return ATH10K_RXCB_SKB(rxcb);
34
35 WARN_ON_ONCE(1);
36 return NULL;
37 }
38
39 static void ath10k_htt_rx_ring_free(struct ath10k_htt *htt)
40 {
41 struct sk_buff *skb;
42 struct ath10k_skb_rxcb *rxcb;
43 struct hlist_node *n;
44 int i;
45
46 if (htt->rx_ring.in_ord_rx) {
47 hash_for_each_safe(htt->rx_ring.skb_table, i, n, rxcb, hlist) {
48 skb = ATH10K_RXCB_SKB(rxcb);
49 dma_unmap_single(htt->ar->dev, rxcb->paddr,
50 skb->len + skb_tailroom(skb),
51 DMA_FROM_DEVICE);
52 hash_del(&rxcb->hlist);
53 dev_kfree_skb_any(skb);
54 }
55 } else {
56 for (i = 0; i < htt->rx_ring.size; i++) {
57 skb = htt->rx_ring.netbufs_ring[i];
58 if (!skb)
59 continue;
60
61 rxcb = ATH10K_SKB_RXCB(skb);
62 dma_unmap_single(htt->ar->dev, rxcb->paddr,
63 skb->len + skb_tailroom(skb),
64 DMA_FROM_DEVICE);
65 dev_kfree_skb_any(skb);
66 }
67 }
68
69 htt->rx_ring.fill_cnt = 0;
70 hash_init(htt->rx_ring.skb_table);
71 memset(htt->rx_ring.netbufs_ring, 0,
72 htt->rx_ring.size * sizeof(htt->rx_ring.netbufs_ring[0]));
73 }
74
75 static size_t ath10k_htt_get_rx_ring_size_32(struct ath10k_htt *htt)
76 {
77 return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_32);
78 }
79
80 static size_t ath10k_htt_get_rx_ring_size_64(struct ath10k_htt *htt)
81 {
82 return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_64);
83 }
84
85 static void ath10k_htt_config_paddrs_ring_32(struct ath10k_htt *htt,
86 void *vaddr)
87 {
88 htt->rx_ring.paddrs_ring_32 = vaddr;
89 }
90
91 static void ath10k_htt_config_paddrs_ring_64(struct ath10k_htt *htt,
92 void *vaddr)
93 {
94 htt->rx_ring.paddrs_ring_64 = vaddr;
95 }
96
97 static void ath10k_htt_set_paddrs_ring_32(struct ath10k_htt *htt,
98 dma_addr_t paddr, int idx)
99 {
100 htt->rx_ring.paddrs_ring_32[idx] = __cpu_to_le32(paddr);
101 }
102
103 static void ath10k_htt_set_paddrs_ring_64(struct ath10k_htt *htt,
104 dma_addr_t paddr, int idx)
105 {
106 htt->rx_ring.paddrs_ring_64[idx] = __cpu_to_le64(paddr);
107 }
108
109 static void ath10k_htt_reset_paddrs_ring_32(struct ath10k_htt *htt, int idx)
110 {
111 htt->rx_ring.paddrs_ring_32[idx] = 0;
112 }
113
114 static void ath10k_htt_reset_paddrs_ring_64(struct ath10k_htt *htt, int idx)
115 {
116 htt->rx_ring.paddrs_ring_64[idx] = 0;
117 }
118
119 static void *ath10k_htt_get_vaddr_ring_32(struct ath10k_htt *htt)
120 {
121 return (void *)htt->rx_ring.paddrs_ring_32;
122 }
123
124 static void *ath10k_htt_get_vaddr_ring_64(struct ath10k_htt *htt)
125 {
126 return (void *)htt->rx_ring.paddrs_ring_64;
127 }
128
129 static int __ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num)
130 {
131 struct htt_rx_desc *rx_desc;
132 struct ath10k_skb_rxcb *rxcb;
133 struct sk_buff *skb;
134 dma_addr_t paddr;
135 int ret = 0, idx;
136
137 /* The Full Rx Reorder firmware has no way of telling the host
138 * implicitly when it copied HTT Rx Ring buffers to MAC Rx Ring.
139 * To keep things simple make sure ring is always half empty. This
140 * guarantees there'll be no replenishment overruns possible.
141 */
142 BUILD_BUG_ON(HTT_RX_RING_FILL_LEVEL >= HTT_RX_RING_SIZE / 2);
143
144 idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr);
145
146 if (idx < 0 || idx >= htt->rx_ring.size) {
147 ath10k_err(htt->ar, "rx ring index is not valid, firmware malfunctioning?\n");
148 idx &= htt->rx_ring.size_mask;
149 ret = -ENOMEM;
150 goto fail;
151 }
152
153 while (num > 0) {
154 skb = dev_alloc_skb(HTT_RX_BUF_SIZE + HTT_RX_DESC_ALIGN);
155 if (!skb) {
156 ret = -ENOMEM;
157 goto fail;
158 }
159
160 if (!IS_ALIGNED((unsigned long)skb->data, HTT_RX_DESC_ALIGN))
161 skb_pull(skb,
162 PTR_ALIGN(skb->data, HTT_RX_DESC_ALIGN) -
163 skb->data);
164
165 /* Clear rx_desc attention word before posting to Rx ring */
166 rx_desc = (struct htt_rx_desc *)skb->data;
167 rx_desc->attention.flags = __cpu_to_le32(0);
168
169 paddr = dma_map_single(htt->ar->dev, skb->data,
170 skb->len + skb_tailroom(skb),
171 DMA_FROM_DEVICE);
172
173 if (unlikely(dma_mapping_error(htt->ar->dev, paddr))) {
174 dev_kfree_skb_any(skb);
175 ret = -ENOMEM;
176 goto fail;
177 }
178
179 rxcb = ATH10K_SKB_RXCB(skb);
180 rxcb->paddr = paddr;
181 htt->rx_ring.netbufs_ring[idx] = skb;
182 ath10k_htt_set_paddrs_ring(htt, paddr, idx);
183 htt->rx_ring.fill_cnt++;
184
185 if (htt->rx_ring.in_ord_rx) {
186 hash_add(htt->rx_ring.skb_table,
187 &ATH10K_SKB_RXCB(skb)->hlist,
188 paddr);
189 }
190
191 num--;
192 idx++;
193 idx &= htt->rx_ring.size_mask;
194 }
195
196 fail:
197 /*
198 * Make sure the rx buffer is updated before available buffer
199 * index to avoid any potential rx ring corruption.
200 */
201 mb();
202 *htt->rx_ring.alloc_idx.vaddr = __cpu_to_le32(idx);
203 return ret;
204 }
205
206 static int ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num)
207 {
208 lockdep_assert_held(&htt->rx_ring.lock);
209 return __ath10k_htt_rx_ring_fill_n(htt, num);
210 }
211
212 static void ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt *htt)
213 {
214 int ret, num_deficit, num_to_fill;
215
216 /* Refilling the whole RX ring buffer proves to be a bad idea. The
217 * reason is RX may take up significant amount of CPU cycles and starve
218 * other tasks, e.g. TX on an ethernet device while acting as a bridge
219 * with ath10k wlan interface. This ended up with very poor performance
220 * once CPU the host system was overwhelmed with RX on ath10k.
221 *
222 * By limiting the number of refills the replenishing occurs
223 * progressively. This in turns makes use of the fact tasklets are
224 * processed in FIFO order. This means actual RX processing can starve
225 * out refilling. If there's not enough buffers on RX ring FW will not
226 * report RX until it is refilled with enough buffers. This
227 * automatically balances load wrt to CPU power.
228 *
229 * This probably comes at a cost of lower maximum throughput but
230 * improves the average and stability.
231 */
232 spin_lock_bh(&htt->rx_ring.lock);
233 num_deficit = htt->rx_ring.fill_level - htt->rx_ring.fill_cnt;
234 num_to_fill = min(ATH10K_HTT_MAX_NUM_REFILL, num_deficit);
235 num_deficit -= num_to_fill;
236 ret = ath10k_htt_rx_ring_fill_n(htt, num_to_fill);
237 if (ret == -ENOMEM) {
238 /*
239 * Failed to fill it to the desired level -
240 * we'll start a timer and try again next time.
241 * As long as enough buffers are left in the ring for
242 * another A-MPDU rx, no special recovery is needed.
243 */
244 mod_timer(&htt->rx_ring.refill_retry_timer, jiffies +
245 msecs_to_jiffies(HTT_RX_RING_REFILL_RETRY_MS));
246 } else if (num_deficit > 0) {
247 mod_timer(&htt->rx_ring.refill_retry_timer, jiffies +
248 msecs_to_jiffies(HTT_RX_RING_REFILL_RESCHED_MS));
249 }
250 spin_unlock_bh(&htt->rx_ring.lock);
251 }
252
253 static void ath10k_htt_rx_ring_refill_retry(struct timer_list *t)
254 {
255 struct ath10k_htt *htt = from_timer(htt, t, rx_ring.refill_retry_timer);
256
257 ath10k_htt_rx_msdu_buff_replenish(htt);
258 }
259
260 int ath10k_htt_rx_ring_refill(struct ath10k *ar)
261 {
262 struct ath10k_htt *htt = &ar->htt;
263 int ret;
264
265 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
266 return 0;
267
268 spin_lock_bh(&htt->rx_ring.lock);
269 ret = ath10k_htt_rx_ring_fill_n(htt, (htt->rx_ring.fill_level -
270 htt->rx_ring.fill_cnt));
271
272 if (ret)
273 ath10k_htt_rx_ring_free(htt);
274
275 spin_unlock_bh(&htt->rx_ring.lock);
276
277 return ret;
278 }
279
280 void ath10k_htt_rx_free(struct ath10k_htt *htt)
281 {
282 if (htt->ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
283 return;
284
285 del_timer_sync(&htt->rx_ring.refill_retry_timer);
286
287 skb_queue_purge(&htt->rx_msdus_q);
288 skb_queue_purge(&htt->rx_in_ord_compl_q);
289 skb_queue_purge(&htt->tx_fetch_ind_q);
290
291 spin_lock_bh(&htt->rx_ring.lock);
292 ath10k_htt_rx_ring_free(htt);
293 spin_unlock_bh(&htt->rx_ring.lock);
294
295 dma_free_coherent(htt->ar->dev,
296 ath10k_htt_get_rx_ring_size(htt),
297 ath10k_htt_get_vaddr_ring(htt),
298 htt->rx_ring.base_paddr);
299
300 dma_free_coherent(htt->ar->dev,
301 sizeof(*htt->rx_ring.alloc_idx.vaddr),
302 htt->rx_ring.alloc_idx.vaddr,
303 htt->rx_ring.alloc_idx.paddr);
304
305 kfree(htt->rx_ring.netbufs_ring);
306 }
307
308 static inline struct sk_buff *ath10k_htt_rx_netbuf_pop(struct ath10k_htt *htt)
309 {
310 struct ath10k *ar = htt->ar;
311 int idx;
312 struct sk_buff *msdu;
313
314 lockdep_assert_held(&htt->rx_ring.lock);
315
316 if (htt->rx_ring.fill_cnt == 0) {
317 ath10k_warn(ar, "tried to pop sk_buff from an empty rx ring\n");
318 return NULL;
319 }
320
321 idx = htt->rx_ring.sw_rd_idx.msdu_payld;
322 msdu = htt->rx_ring.netbufs_ring[idx];
323 htt->rx_ring.netbufs_ring[idx] = NULL;
324 ath10k_htt_reset_paddrs_ring(htt, idx);
325
326 idx++;
327 idx &= htt->rx_ring.size_mask;
328 htt->rx_ring.sw_rd_idx.msdu_payld = idx;
329 htt->rx_ring.fill_cnt--;
330
331 dma_unmap_single(htt->ar->dev,
332 ATH10K_SKB_RXCB(msdu)->paddr,
333 msdu->len + skb_tailroom(msdu),
334 DMA_FROM_DEVICE);
335 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ",
336 msdu->data, msdu->len + skb_tailroom(msdu));
337
338 return msdu;
339 }
340
341 /* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */
342 static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
343 struct sk_buff_head *amsdu)
344 {
345 struct ath10k *ar = htt->ar;
346 int msdu_len, msdu_chaining = 0;
347 struct sk_buff *msdu;
348 struct htt_rx_desc *rx_desc;
349
350 lockdep_assert_held(&htt->rx_ring.lock);
351
352 for (;;) {
353 int last_msdu, msdu_len_invalid, msdu_chained;
354
355 msdu = ath10k_htt_rx_netbuf_pop(htt);
356 if (!msdu) {
357 __skb_queue_purge(amsdu);
358 return -ENOENT;
359 }
360
361 __skb_queue_tail(amsdu, msdu);
362
363 rx_desc = (struct htt_rx_desc *)msdu->data;
364
365 /* FIXME: we must report msdu payload since this is what caller
366 * expects now
367 */
368 skb_put(msdu, offsetof(struct htt_rx_desc, msdu_payload));
369 skb_pull(msdu, offsetof(struct htt_rx_desc, msdu_payload));
370
371 /*
372 * Sanity check - confirm the HW is finished filling in the
373 * rx data.
374 * If the HW and SW are working correctly, then it's guaranteed
375 * that the HW's MAC DMA is done before this point in the SW.
376 * To prevent the case that we handle a stale Rx descriptor,
377 * just assert for now until we have a way to recover.
378 */
379 if (!(__le32_to_cpu(rx_desc->attention.flags)
380 & RX_ATTENTION_FLAGS_MSDU_DONE)) {
381 __skb_queue_purge(amsdu);
382 return -EIO;
383 }
384
385 msdu_len_invalid = !!(__le32_to_cpu(rx_desc->attention.flags)
386 & (RX_ATTENTION_FLAGS_MPDU_LENGTH_ERR |
387 RX_ATTENTION_FLAGS_MSDU_LENGTH_ERR));
388 msdu_len = MS(__le32_to_cpu(rx_desc->msdu_start.common.info0),
389 RX_MSDU_START_INFO0_MSDU_LENGTH);
390 msdu_chained = rx_desc->frag_info.ring2_more_count;
391
392 if (msdu_len_invalid)
393 msdu_len = 0;
394
395 skb_trim(msdu, 0);
396 skb_put(msdu, min(msdu_len, HTT_RX_MSDU_SIZE));
397 msdu_len -= msdu->len;
398
399 /* Note: Chained buffers do not contain rx descriptor */
400 while (msdu_chained--) {
401 msdu = ath10k_htt_rx_netbuf_pop(htt);
402 if (!msdu) {
403 __skb_queue_purge(amsdu);
404 return -ENOENT;
405 }
406
407 __skb_queue_tail(amsdu, msdu);
408 skb_trim(msdu, 0);
409 skb_put(msdu, min(msdu_len, HTT_RX_BUF_SIZE));
410 msdu_len -= msdu->len;
411 msdu_chaining = 1;
412 }
413
414 last_msdu = __le32_to_cpu(rx_desc->msdu_end.common.info0) &
415 RX_MSDU_END_INFO0_LAST_MSDU;
416
417 trace_ath10k_htt_rx_desc(ar, &rx_desc->attention,
418 sizeof(*rx_desc) - sizeof(u32));
419
420 if (last_msdu)
421 break;
422 }
423
424 if (skb_queue_empty(amsdu))
425 msdu_chaining = -1;
426
427 /*
428 * Don't refill the ring yet.
429 *
430 * First, the elements popped here are still in use - it is not
431 * safe to overwrite them until the matching call to
432 * mpdu_desc_list_next. Second, for efficiency it is preferable to
433 * refill the rx ring with 1 PPDU's worth of rx buffers (something
434 * like 32 x 3 buffers), rather than one MPDU's worth of rx buffers
435 * (something like 3 buffers). Consequently, we'll rely on the txrx
436 * SW to tell us when it is done pulling all the PPDU's rx buffers
437 * out of the rx ring, and then refill it just once.
438 */
439
440 return msdu_chaining;
441 }
442
443 static struct sk_buff *ath10k_htt_rx_pop_paddr(struct ath10k_htt *htt,
444 u64 paddr)
445 {
446 struct ath10k *ar = htt->ar;
447 struct ath10k_skb_rxcb *rxcb;
448 struct sk_buff *msdu;
449
450 lockdep_assert_held(&htt->rx_ring.lock);
451
452 msdu = ath10k_htt_rx_find_skb_paddr(ar, paddr);
453 if (!msdu)
454 return NULL;
455
456 rxcb = ATH10K_SKB_RXCB(msdu);
457 hash_del(&rxcb->hlist);
458 htt->rx_ring.fill_cnt--;
459
460 dma_unmap_single(htt->ar->dev, rxcb->paddr,
461 msdu->len + skb_tailroom(msdu),
462 DMA_FROM_DEVICE);
463 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ",
464 msdu->data, msdu->len + skb_tailroom(msdu));
465
466 return msdu;
467 }
468
469 static inline void ath10k_htt_append_frag_list(struct sk_buff *skb_head,
470 struct sk_buff *frag_list,
471 unsigned int frag_len)
472 {
473 skb_shinfo(skb_head)->frag_list = frag_list;
474 skb_head->data_len = frag_len;
475 skb_head->len += skb_head->data_len;
476 }
477
478 static int ath10k_htt_rx_handle_amsdu_mon_32(struct ath10k_htt *htt,
479 struct sk_buff *msdu,
480 struct htt_rx_in_ord_msdu_desc **msdu_desc)
481 {
482 struct ath10k *ar = htt->ar;
483 u32 paddr;
484 struct sk_buff *frag_buf;
485 struct sk_buff *prev_frag_buf;
486 u8 last_frag;
487 struct htt_rx_in_ord_msdu_desc *ind_desc = *msdu_desc;
488 struct htt_rx_desc *rxd;
489 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len);
490
491 rxd = (void *)msdu->data;
492 trace_ath10k_htt_rx_desc(ar, rxd, sizeof(*rxd));
493
494 skb_put(msdu, sizeof(struct htt_rx_desc));
495 skb_pull(msdu, sizeof(struct htt_rx_desc));
496 skb_put(msdu, min(amsdu_len, HTT_RX_MSDU_SIZE));
497 amsdu_len -= msdu->len;
498
499 last_frag = ind_desc->reserved;
500 if (last_frag) {
501 if (amsdu_len) {
502 ath10k_warn(ar, "invalid amsdu len %u, left %d",
503 __le16_to_cpu(ind_desc->msdu_len),
504 amsdu_len);
505 }
506 return 0;
507 }
508
509 ind_desc++;
510 paddr = __le32_to_cpu(ind_desc->msdu_paddr);
511 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
512 if (!frag_buf) {
513 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%x", paddr);
514 return -ENOENT;
515 }
516
517 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
518 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len);
519
520 amsdu_len -= frag_buf->len;
521 prev_frag_buf = frag_buf;
522 last_frag = ind_desc->reserved;
523 while (!last_frag) {
524 ind_desc++;
525 paddr = __le32_to_cpu(ind_desc->msdu_paddr);
526 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
527 if (!frag_buf) {
528 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%x",
529 paddr);
530 prev_frag_buf->next = NULL;
531 return -ENOENT;
532 }
533
534 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
535 last_frag = ind_desc->reserved;
536 amsdu_len -= frag_buf->len;
537
538 prev_frag_buf->next = frag_buf;
539 prev_frag_buf = frag_buf;
540 }
541
542 if (amsdu_len) {
543 ath10k_warn(ar, "invalid amsdu len %u, left %d",
544 __le16_to_cpu(ind_desc->msdu_len), amsdu_len);
545 }
546
547 *msdu_desc = ind_desc;
548
549 prev_frag_buf->next = NULL;
550 return 0;
551 }
552
553 static int
554 ath10k_htt_rx_handle_amsdu_mon_64(struct ath10k_htt *htt,
555 struct sk_buff *msdu,
556 struct htt_rx_in_ord_msdu_desc_ext **msdu_desc)
557 {
558 struct ath10k *ar = htt->ar;
559 u64 paddr;
560 struct sk_buff *frag_buf;
561 struct sk_buff *prev_frag_buf;
562 u8 last_frag;
563 struct htt_rx_in_ord_msdu_desc_ext *ind_desc = *msdu_desc;
564 struct htt_rx_desc *rxd;
565 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len);
566
567 rxd = (void *)msdu->data;
568 trace_ath10k_htt_rx_desc(ar, rxd, sizeof(*rxd));
569
570 skb_put(msdu, sizeof(struct htt_rx_desc));
571 skb_pull(msdu, sizeof(struct htt_rx_desc));
572 skb_put(msdu, min(amsdu_len, HTT_RX_MSDU_SIZE));
573 amsdu_len -= msdu->len;
574
575 last_frag = ind_desc->reserved;
576 if (last_frag) {
577 if (amsdu_len) {
578 ath10k_warn(ar, "invalid amsdu len %u, left %d",
579 __le16_to_cpu(ind_desc->msdu_len),
580 amsdu_len);
581 }
582 return 0;
583 }
584
585 ind_desc++;
586 paddr = __le64_to_cpu(ind_desc->msdu_paddr);
587 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
588 if (!frag_buf) {
589 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%llx", paddr);
590 return -ENOENT;
591 }
592
593 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
594 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len);
595
596 amsdu_len -= frag_buf->len;
597 prev_frag_buf = frag_buf;
598 last_frag = ind_desc->reserved;
599 while (!last_frag) {
600 ind_desc++;
601 paddr = __le64_to_cpu(ind_desc->msdu_paddr);
602 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
603 if (!frag_buf) {
604 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%llx",
605 paddr);
606 prev_frag_buf->next = NULL;
607 return -ENOENT;
608 }
609
610 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
611 last_frag = ind_desc->reserved;
612 amsdu_len -= frag_buf->len;
613
614 prev_frag_buf->next = frag_buf;
615 prev_frag_buf = frag_buf;
616 }
617
618 if (amsdu_len) {
619 ath10k_warn(ar, "invalid amsdu len %u, left %d",
620 __le16_to_cpu(ind_desc->msdu_len), amsdu_len);
621 }
622
623 *msdu_desc = ind_desc;
624
625 prev_frag_buf->next = NULL;
626 return 0;
627 }
628
629 static int ath10k_htt_rx_pop_paddr32_list(struct ath10k_htt *htt,
630 struct htt_rx_in_ord_ind *ev,
631 struct sk_buff_head *list)
632 {
633 struct ath10k *ar = htt->ar;
634 struct htt_rx_in_ord_msdu_desc *msdu_desc = ev->msdu_descs32;
635 struct htt_rx_desc *rxd;
636 struct sk_buff *msdu;
637 int msdu_count, ret;
638 bool is_offload;
639 u32 paddr;
640
641 lockdep_assert_held(&htt->rx_ring.lock);
642
643 msdu_count = __le16_to_cpu(ev->msdu_count);
644 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
645
646 while (msdu_count--) {
647 paddr = __le32_to_cpu(msdu_desc->msdu_paddr);
648
649 msdu = ath10k_htt_rx_pop_paddr(htt, paddr);
650 if (!msdu) {
651 __skb_queue_purge(list);
652 return -ENOENT;
653 }
654
655 if (!is_offload && ar->monitor_arvif) {
656 ret = ath10k_htt_rx_handle_amsdu_mon_32(htt, msdu,
657 &msdu_desc);
658 if (ret) {
659 __skb_queue_purge(list);
660 return ret;
661 }
662 __skb_queue_tail(list, msdu);
663 msdu_desc++;
664 continue;
665 }
666
667 __skb_queue_tail(list, msdu);
668
669 if (!is_offload) {
670 rxd = (void *)msdu->data;
671
672 trace_ath10k_htt_rx_desc(ar, rxd, sizeof(*rxd));
673
674 skb_put(msdu, sizeof(*rxd));
675 skb_pull(msdu, sizeof(*rxd));
676 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len));
677
678 if (!(__le32_to_cpu(rxd->attention.flags) &
679 RX_ATTENTION_FLAGS_MSDU_DONE)) {
680 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n");
681 return -EIO;
682 }
683 }
684
685 msdu_desc++;
686 }
687
688 return 0;
689 }
690
691 static int ath10k_htt_rx_pop_paddr64_list(struct ath10k_htt *htt,
692 struct htt_rx_in_ord_ind *ev,
693 struct sk_buff_head *list)
694 {
695 struct ath10k *ar = htt->ar;
696 struct htt_rx_in_ord_msdu_desc_ext *msdu_desc = ev->msdu_descs64;
697 struct htt_rx_desc *rxd;
698 struct sk_buff *msdu;
699 int msdu_count, ret;
700 bool is_offload;
701 u64 paddr;
702
703 lockdep_assert_held(&htt->rx_ring.lock);
704
705 msdu_count = __le16_to_cpu(ev->msdu_count);
706 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
707
708 while (msdu_count--) {
709 paddr = __le64_to_cpu(msdu_desc->msdu_paddr);
710 msdu = ath10k_htt_rx_pop_paddr(htt, paddr);
711 if (!msdu) {
712 __skb_queue_purge(list);
713 return -ENOENT;
714 }
715
716 if (!is_offload && ar->monitor_arvif) {
717 ret = ath10k_htt_rx_handle_amsdu_mon_64(htt, msdu,
718 &msdu_desc);
719 if (ret) {
720 __skb_queue_purge(list);
721 return ret;
722 }
723 __skb_queue_tail(list, msdu);
724 msdu_desc++;
725 continue;
726 }
727
728 __skb_queue_tail(list, msdu);
729
730 if (!is_offload) {
731 rxd = (void *)msdu->data;
732
733 trace_ath10k_htt_rx_desc(ar, rxd, sizeof(*rxd));
734
735 skb_put(msdu, sizeof(*rxd));
736 skb_pull(msdu, sizeof(*rxd));
737 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len));
738
739 if (!(__le32_to_cpu(rxd->attention.flags) &
740 RX_ATTENTION_FLAGS_MSDU_DONE)) {
741 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n");
742 return -EIO;
743 }
744 }
745
746 msdu_desc++;
747 }
748
749 return 0;
750 }
751
752 int ath10k_htt_rx_alloc(struct ath10k_htt *htt)
753 {
754 struct ath10k *ar = htt->ar;
755 dma_addr_t paddr;
756 void *vaddr, *vaddr_ring;
757 size_t size;
758 struct timer_list *timer = &htt->rx_ring.refill_retry_timer;
759
760 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
761 return 0;
762
763 htt->rx_confused = false;
764
765 /* XXX: The fill level could be changed during runtime in response to
766 * the host processing latency. Is this really worth it?
767 */
768 htt->rx_ring.size = HTT_RX_RING_SIZE;
769 htt->rx_ring.size_mask = htt->rx_ring.size - 1;
770 htt->rx_ring.fill_level = ar->hw_params.rx_ring_fill_level;
771
772 if (!is_power_of_2(htt->rx_ring.size)) {
773 ath10k_warn(ar, "htt rx ring size is not power of 2\n");
774 return -EINVAL;
775 }
776
777 htt->rx_ring.netbufs_ring =
778 kcalloc(htt->rx_ring.size, sizeof(struct sk_buff *),
779 GFP_KERNEL);
780 if (!htt->rx_ring.netbufs_ring)
781 goto err_netbuf;
782
783 size = ath10k_htt_get_rx_ring_size(htt);
784
785 vaddr_ring = dma_alloc_coherent(htt->ar->dev, size, &paddr, GFP_KERNEL);
786 if (!vaddr_ring)
787 goto err_dma_ring;
788
789 ath10k_htt_config_paddrs_ring(htt, vaddr_ring);
790 htt->rx_ring.base_paddr = paddr;
791
792 vaddr = dma_alloc_coherent(htt->ar->dev,
793 sizeof(*htt->rx_ring.alloc_idx.vaddr),
794 &paddr, GFP_KERNEL);
795 if (!vaddr)
796 goto err_dma_idx;
797
798 htt->rx_ring.alloc_idx.vaddr = vaddr;
799 htt->rx_ring.alloc_idx.paddr = paddr;
800 htt->rx_ring.sw_rd_idx.msdu_payld = htt->rx_ring.size_mask;
801 *htt->rx_ring.alloc_idx.vaddr = 0;
802
803 /* Initialize the Rx refill retry timer */
804 timer_setup(timer, ath10k_htt_rx_ring_refill_retry, 0);
805
806 spin_lock_init(&htt->rx_ring.lock);
807
808 htt->rx_ring.fill_cnt = 0;
809 htt->rx_ring.sw_rd_idx.msdu_payld = 0;
810 hash_init(htt->rx_ring.skb_table);
811
812 skb_queue_head_init(&htt->rx_msdus_q);
813 skb_queue_head_init(&htt->rx_in_ord_compl_q);
814 skb_queue_head_init(&htt->tx_fetch_ind_q);
815 atomic_set(&htt->num_mpdus_ready, 0);
816
817 ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt rx ring size %d fill_level %d\n",
818 htt->rx_ring.size, htt->rx_ring.fill_level);
819 return 0;
820
821 err_dma_idx:
822 dma_free_coherent(htt->ar->dev,
823 ath10k_htt_get_rx_ring_size(htt),
824 vaddr_ring,
825 htt->rx_ring.base_paddr);
826 err_dma_ring:
827 kfree(htt->rx_ring.netbufs_ring);
828 err_netbuf:
829 return -ENOMEM;
830 }
831
832 static int ath10k_htt_rx_crypto_param_len(struct ath10k *ar,
833 enum htt_rx_mpdu_encrypt_type type)
834 {
835 switch (type) {
836 case HTT_RX_MPDU_ENCRYPT_NONE:
837 return 0;
838 case HTT_RX_MPDU_ENCRYPT_WEP40:
839 case HTT_RX_MPDU_ENCRYPT_WEP104:
840 return IEEE80211_WEP_IV_LEN;
841 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
842 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
843 return IEEE80211_TKIP_IV_LEN;
844 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
845 return IEEE80211_CCMP_HDR_LEN;
846 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
847 return IEEE80211_CCMP_256_HDR_LEN;
848 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
849 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
850 return IEEE80211_GCMP_HDR_LEN;
851 case HTT_RX_MPDU_ENCRYPT_WEP128:
852 case HTT_RX_MPDU_ENCRYPT_WAPI:
853 break;
854 }
855
856 ath10k_warn(ar, "unsupported encryption type %d\n", type);
857 return 0;
858 }
859
860 #define MICHAEL_MIC_LEN 8
861
862 static int ath10k_htt_rx_crypto_mic_len(struct ath10k *ar,
863 enum htt_rx_mpdu_encrypt_type type)
864 {
865 switch (type) {
866 case HTT_RX_MPDU_ENCRYPT_NONE:
867 case HTT_RX_MPDU_ENCRYPT_WEP40:
868 case HTT_RX_MPDU_ENCRYPT_WEP104:
869 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
870 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
871 return 0;
872 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
873 return IEEE80211_CCMP_MIC_LEN;
874 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
875 return IEEE80211_CCMP_256_MIC_LEN;
876 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
877 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
878 return IEEE80211_GCMP_MIC_LEN;
879 case HTT_RX_MPDU_ENCRYPT_WEP128:
880 case HTT_RX_MPDU_ENCRYPT_WAPI:
881 break;
882 }
883
884 ath10k_warn(ar, "unsupported encryption type %d\n", type);
885 return 0;
886 }
887
888 static int ath10k_htt_rx_crypto_icv_len(struct ath10k *ar,
889 enum htt_rx_mpdu_encrypt_type type)
890 {
891 switch (type) {
892 case HTT_RX_MPDU_ENCRYPT_NONE:
893 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
894 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
895 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
896 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
897 return 0;
898 case HTT_RX_MPDU_ENCRYPT_WEP40:
899 case HTT_RX_MPDU_ENCRYPT_WEP104:
900 return IEEE80211_WEP_ICV_LEN;
901 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
902 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
903 return IEEE80211_TKIP_ICV_LEN;
904 case HTT_RX_MPDU_ENCRYPT_WEP128:
905 case HTT_RX_MPDU_ENCRYPT_WAPI:
906 break;
907 }
908
909 ath10k_warn(ar, "unsupported encryption type %d\n", type);
910 return 0;
911 }
912
913 struct amsdu_subframe_hdr {
914 u8 dst[ETH_ALEN];
915 u8 src[ETH_ALEN];
916 __be16 len;
917 } __packed;
918
919 #define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63)
920
921 static inline u8 ath10k_bw_to_mac80211_bw(u8 bw)
922 {
923 u8 ret = 0;
924
925 switch (bw) {
926 case 0:
927 ret = RATE_INFO_BW_20;
928 break;
929 case 1:
930 ret = RATE_INFO_BW_40;
931 break;
932 case 2:
933 ret = RATE_INFO_BW_80;
934 break;
935 case 3:
936 ret = RATE_INFO_BW_160;
937 break;
938 }
939
940 return ret;
941 }
942
943 static void ath10k_htt_rx_h_rates(struct ath10k *ar,
944 struct ieee80211_rx_status *status,
945 struct htt_rx_desc *rxd)
946 {
947 struct ieee80211_supported_band *sband;
948 u8 cck, rate, bw, sgi, mcs, nss;
949 u8 preamble = 0;
950 u8 group_id;
951 u32 info1, info2, info3;
952 u32 stbc, nsts_su;
953
954 info1 = __le32_to_cpu(rxd->ppdu_start.info1);
955 info2 = __le32_to_cpu(rxd->ppdu_start.info2);
956 info3 = __le32_to_cpu(rxd->ppdu_start.info3);
957
958 preamble = MS(info1, RX_PPDU_START_INFO1_PREAMBLE_TYPE);
959
960 switch (preamble) {
961 case HTT_RX_LEGACY:
962 /* To get legacy rate index band is required. Since band can't
963 * be undefined check if freq is non-zero.
964 */
965 if (!status->freq)
966 return;
967
968 cck = info1 & RX_PPDU_START_INFO1_L_SIG_RATE_SELECT;
969 rate = MS(info1, RX_PPDU_START_INFO1_L_SIG_RATE);
970 rate &= ~RX_PPDU_START_RATE_FLAG;
971
972 sband = &ar->mac.sbands[status->band];
973 status->rate_idx = ath10k_mac_hw_rate_to_idx(sband, rate, cck);
974 break;
975 case HTT_RX_HT:
976 case HTT_RX_HT_WITH_TXBF:
977 /* HT-SIG - Table 20-11 in info2 and info3 */
978 mcs = info2 & 0x1F;
979 nss = mcs >> 3;
980 bw = (info2 >> 7) & 1;
981 sgi = (info3 >> 7) & 1;
982
983 status->rate_idx = mcs;
984 status->encoding = RX_ENC_HT;
985 if (sgi)
986 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
987 if (bw)
988 status->bw = RATE_INFO_BW_40;
989 break;
990 case HTT_RX_VHT:
991 case HTT_RX_VHT_WITH_TXBF:
992 /* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3
993 * TODO check this
994 */
995 bw = info2 & 3;
996 sgi = info3 & 1;
997 stbc = (info2 >> 3) & 1;
998 group_id = (info2 >> 4) & 0x3F;
999
1000 if (GROUP_ID_IS_SU_MIMO(group_id)) {
1001 mcs = (info3 >> 4) & 0x0F;
1002 nsts_su = ((info2 >> 10) & 0x07);
1003 if (stbc)
1004 nss = (nsts_su >> 2) + 1;
1005 else
1006 nss = (nsts_su + 1);
1007 } else {
1008 /* Hardware doesn't decode VHT-SIG-B into Rx descriptor
1009 * so it's impossible to decode MCS. Also since
1010 * firmware consumes Group Id Management frames host
1011 * has no knowledge regarding group/user position
1012 * mapping so it's impossible to pick the correct Nsts
1013 * from VHT-SIG-A1.
1014 *
1015 * Bandwidth and SGI are valid so report the rateinfo
1016 * on best-effort basis.
1017 */
1018 mcs = 0;
1019 nss = 1;
1020 }
1021
1022 if (mcs > 0x09) {
1023 ath10k_warn(ar, "invalid MCS received %u\n", mcs);
1024 ath10k_warn(ar, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n",
1025 __le32_to_cpu(rxd->attention.flags),
1026 __le32_to_cpu(rxd->mpdu_start.info0),
1027 __le32_to_cpu(rxd->mpdu_start.info1),
1028 __le32_to_cpu(rxd->msdu_start.common.info0),
1029 __le32_to_cpu(rxd->msdu_start.common.info1),
1030 rxd->ppdu_start.info0,
1031 __le32_to_cpu(rxd->ppdu_start.info1),
1032 __le32_to_cpu(rxd->ppdu_start.info2),
1033 __le32_to_cpu(rxd->ppdu_start.info3),
1034 __le32_to_cpu(rxd->ppdu_start.info4));
1035
1036 ath10k_warn(ar, "msdu end %08x mpdu end %08x\n",
1037 __le32_to_cpu(rxd->msdu_end.common.info0),
1038 __le32_to_cpu(rxd->mpdu_end.info0));
1039
1040 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL,
1041 "rx desc msdu payload: ",
1042 rxd->msdu_payload, 50);
1043 }
1044
1045 status->rate_idx = mcs;
1046 status->nss = nss;
1047
1048 if (sgi)
1049 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1050
1051 status->bw = ath10k_bw_to_mac80211_bw(bw);
1052 status->encoding = RX_ENC_VHT;
1053 break;
1054 default:
1055 break;
1056 }
1057 }
1058
1059 static struct ieee80211_channel *
1060 ath10k_htt_rx_h_peer_channel(struct ath10k *ar, struct htt_rx_desc *rxd)
1061 {
1062 struct ath10k_peer *peer;
1063 struct ath10k_vif *arvif;
1064 struct cfg80211_chan_def def;
1065 u16 peer_id;
1066
1067 lockdep_assert_held(&ar->data_lock);
1068
1069 if (!rxd)
1070 return NULL;
1071
1072 if (rxd->attention.flags &
1073 __cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID))
1074 return NULL;
1075
1076 if (!(rxd->msdu_end.common.info0 &
1077 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)))
1078 return NULL;
1079
1080 peer_id = MS(__le32_to_cpu(rxd->mpdu_start.info0),
1081 RX_MPDU_START_INFO0_PEER_IDX);
1082
1083 peer = ath10k_peer_find_by_id(ar, peer_id);
1084 if (!peer)
1085 return NULL;
1086
1087 arvif = ath10k_get_arvif(ar, peer->vdev_id);
1088 if (WARN_ON_ONCE(!arvif))
1089 return NULL;
1090
1091 if (ath10k_mac_vif_chan(arvif->vif, &def))
1092 return NULL;
1093
1094 return def.chan;
1095 }
1096
1097 static struct ieee80211_channel *
1098 ath10k_htt_rx_h_vdev_channel(struct ath10k *ar, u32 vdev_id)
1099 {
1100 struct ath10k_vif *arvif;
1101 struct cfg80211_chan_def def;
1102
1103 lockdep_assert_held(&ar->data_lock);
1104
1105 list_for_each_entry(arvif, &ar->arvifs, list) {
1106 if (arvif->vdev_id == vdev_id &&
1107 ath10k_mac_vif_chan(arvif->vif, &def) == 0)
1108 return def.chan;
1109 }
1110
1111 return NULL;
1112 }
1113
1114 static void
1115 ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw *hw,
1116 struct ieee80211_chanctx_conf *conf,
1117 void *data)
1118 {
1119 struct cfg80211_chan_def *def = data;
1120
1121 *def = conf->def;
1122 }
1123
1124 static struct ieee80211_channel *
1125 ath10k_htt_rx_h_any_channel(struct ath10k *ar)
1126 {
1127 struct cfg80211_chan_def def = {};
1128
1129 ieee80211_iter_chan_contexts_atomic(ar->hw,
1130 ath10k_htt_rx_h_any_chan_iter,
1131 &def);
1132
1133 return def.chan;
1134 }
1135
1136 static bool ath10k_htt_rx_h_channel(struct ath10k *ar,
1137 struct ieee80211_rx_status *status,
1138 struct htt_rx_desc *rxd,
1139 u32 vdev_id)
1140 {
1141 struct ieee80211_channel *ch;
1142
1143 spin_lock_bh(&ar->data_lock);
1144 ch = ar->scan_channel;
1145 if (!ch)
1146 ch = ar->rx_channel;
1147 if (!ch)
1148 ch = ath10k_htt_rx_h_peer_channel(ar, rxd);
1149 if (!ch)
1150 ch = ath10k_htt_rx_h_vdev_channel(ar, vdev_id);
1151 if (!ch)
1152 ch = ath10k_htt_rx_h_any_channel(ar);
1153 if (!ch)
1154 ch = ar->tgt_oper_chan;
1155 spin_unlock_bh(&ar->data_lock);
1156
1157 if (!ch)
1158 return false;
1159
1160 status->band = ch->band;
1161 status->freq = ch->center_freq;
1162
1163 return true;
1164 }
1165
1166 static void ath10k_htt_rx_h_signal(struct ath10k *ar,
1167 struct ieee80211_rx_status *status,
1168 struct htt_rx_desc *rxd)
1169 {
1170 int i;
1171
1172 for (i = 0; i < IEEE80211_MAX_CHAINS ; i++) {
1173 status->chains &= ~BIT(i);
1174
1175 if (rxd->ppdu_start.rssi_chains[i].pri20_mhz != 0x80) {
1176 status->chain_signal[i] = ATH10K_DEFAULT_NOISE_FLOOR +
1177 rxd->ppdu_start.rssi_chains[i].pri20_mhz;
1178
1179 status->chains |= BIT(i);
1180 }
1181 }
1182
1183 /* FIXME: Get real NF */
1184 status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
1185 rxd->ppdu_start.rssi_comb;
1186 status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
1187 }
1188
1189 static void ath10k_htt_rx_h_mactime(struct ath10k *ar,
1190 struct ieee80211_rx_status *status,
1191 struct htt_rx_desc *rxd)
1192 {
1193 /* FIXME: TSF is known only at the end of PPDU, in the last MPDU. This
1194 * means all prior MSDUs in a PPDU are reported to mac80211 without the
1195 * TSF. Is it worth holding frames until end of PPDU is known?
1196 *
1197 * FIXME: Can we get/compute 64bit TSF?
1198 */
1199 status->mactime = __le32_to_cpu(rxd->ppdu_end.common.tsf_timestamp);
1200 status->flag |= RX_FLAG_MACTIME_END;
1201 }
1202
1203 static void ath10k_htt_rx_h_ppdu(struct ath10k *ar,
1204 struct sk_buff_head *amsdu,
1205 struct ieee80211_rx_status *status,
1206 u32 vdev_id)
1207 {
1208 struct sk_buff *first;
1209 struct htt_rx_desc *rxd;
1210 bool is_first_ppdu;
1211 bool is_last_ppdu;
1212
1213 if (skb_queue_empty(amsdu))
1214 return;
1215
1216 first = skb_peek(amsdu);
1217 rxd = (void *)first->data - sizeof(*rxd);
1218
1219 is_first_ppdu = !!(rxd->attention.flags &
1220 __cpu_to_le32(RX_ATTENTION_FLAGS_FIRST_MPDU));
1221 is_last_ppdu = !!(rxd->attention.flags &
1222 __cpu_to_le32(RX_ATTENTION_FLAGS_LAST_MPDU));
1223
1224 if (is_first_ppdu) {
1225 /* New PPDU starts so clear out the old per-PPDU status. */
1226 status->freq = 0;
1227 status->rate_idx = 0;
1228 status->nss = 0;
1229 status->encoding = RX_ENC_LEGACY;
1230 status->bw = RATE_INFO_BW_20;
1231
1232 status->flag &= ~RX_FLAG_MACTIME_END;
1233 status->flag |= RX_FLAG_NO_SIGNAL_VAL;
1234
1235 status->flag &= ~(RX_FLAG_AMPDU_IS_LAST);
1236 status->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN;
1237 status->ampdu_reference = ar->ampdu_reference;
1238
1239 ath10k_htt_rx_h_signal(ar, status, rxd);
1240 ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id);
1241 ath10k_htt_rx_h_rates(ar, status, rxd);
1242 }
1243
1244 if (is_last_ppdu) {
1245 ath10k_htt_rx_h_mactime(ar, status, rxd);
1246
1247 /* set ampdu last segment flag */
1248 status->flag |= RX_FLAG_AMPDU_IS_LAST;
1249 ar->ampdu_reference++;
1250 }
1251 }
1252
1253 static const char * const tid_to_ac[] = {
1254 "BE",
1255 "BK",
1256 "BK",
1257 "BE",
1258 "VI",
1259 "VI",
1260 "VO",
1261 "VO",
1262 };
1263
1264 static char *ath10k_get_tid(struct ieee80211_hdr *hdr, char *out, size_t size)
1265 {
1266 u8 *qc;
1267 int tid;
1268
1269 if (!ieee80211_is_data_qos(hdr->frame_control))
1270 return "";
1271
1272 qc = ieee80211_get_qos_ctl(hdr);
1273 tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
1274 if (tid < 8)
1275 snprintf(out, size, "tid %d (%s)", tid, tid_to_ac[tid]);
1276 else
1277 snprintf(out, size, "tid %d", tid);
1278
1279 return out;
1280 }
1281
1282 static void ath10k_htt_rx_h_queue_msdu(struct ath10k *ar,
1283 struct ieee80211_rx_status *rx_status,
1284 struct sk_buff *skb)
1285 {
1286 struct ieee80211_rx_status *status;
1287
1288 status = IEEE80211_SKB_RXCB(skb);
1289 *status = *rx_status;
1290
1291 skb_queue_tail(&ar->htt.rx_msdus_q, skb);
1292 }
1293
1294 static void ath10k_process_rx(struct ath10k *ar, struct sk_buff *skb)
1295 {
1296 struct ieee80211_rx_status *status;
1297 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1298 char tid[32];
1299
1300 status = IEEE80211_SKB_RXCB(skb);
1301
1302 if (!(ar->filter_flags & FIF_FCSFAIL) &&
1303 status->flag & RX_FLAG_FAILED_FCS_CRC) {
1304 ar->stats.rx_crc_err_drop++;
1305 dev_kfree_skb_any(skb);
1306 return;
1307 }
1308
1309 ath10k_dbg(ar, ATH10K_DBG_DATA,
1310 "rx skb %pK len %u peer %pM %s %s sn %u %s%s%s%s%s%s %srate_idx %u vht_nss %u freq %u band %u flag 0x%x fcs-err %i mic-err %i amsdu-more %i\n",
1311 skb,
1312 skb->len,
1313 ieee80211_get_SA(hdr),
1314 ath10k_get_tid(hdr, tid, sizeof(tid)),
1315 is_multicast_ether_addr(ieee80211_get_DA(hdr)) ?
1316 "mcast" : "ucast",
1317 (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4,
1318 (status->encoding == RX_ENC_LEGACY) ? "legacy" : "",
1319 (status->encoding == RX_ENC_HT) ? "ht" : "",
1320 (status->encoding == RX_ENC_VHT) ? "vht" : "",
1321 (status->bw == RATE_INFO_BW_40) ? "40" : "",
1322 (status->bw == RATE_INFO_BW_80) ? "80" : "",
1323 (status->bw == RATE_INFO_BW_160) ? "160" : "",
1324 status->enc_flags & RX_ENC_FLAG_SHORT_GI ? "sgi " : "",
1325 status->rate_idx,
1326 status->nss,
1327 status->freq,
1328 status->band, status->flag,
1329 !!(status->flag & RX_FLAG_FAILED_FCS_CRC),
1330 !!(status->flag & RX_FLAG_MMIC_ERROR),
1331 !!(status->flag & RX_FLAG_AMSDU_MORE));
1332 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ",
1333 skb->data, skb->len);
1334 trace_ath10k_rx_hdr(ar, skb->data, skb->len);
1335 trace_ath10k_rx_payload(ar, skb->data, skb->len);
1336
1337 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi);
1338 }
1339
1340 static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k *ar,
1341 struct ieee80211_hdr *hdr)
1342 {
1343 int len = ieee80211_hdrlen(hdr->frame_control);
1344
1345 if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING,
1346 ar->running_fw->fw_file.fw_features))
1347 len = round_up(len, 4);
1348
1349 return len;
1350 }
1351
1352 static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar,
1353 struct sk_buff *msdu,
1354 struct ieee80211_rx_status *status,
1355 enum htt_rx_mpdu_encrypt_type enctype,
1356 bool is_decrypted,
1357 const u8 first_hdr[64])
1358 {
1359 struct ieee80211_hdr *hdr;
1360 struct htt_rx_desc *rxd;
1361 size_t hdr_len;
1362 size_t crypto_len;
1363 bool is_first;
1364 bool is_last;
1365 bool msdu_limit_err;
1366 int bytes_aligned = ar->hw_params.decap_align_bytes;
1367 u8 *qos;
1368
1369 rxd = (void *)msdu->data - sizeof(*rxd);
1370 is_first = !!(rxd->msdu_end.common.info0 &
1371 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
1372 is_last = !!(rxd->msdu_end.common.info0 &
1373 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
1374
1375 /* Delivered decapped frame:
1376 * [802.11 header]
1377 * [crypto param] <-- can be trimmed if !fcs_err &&
1378 * !decrypt_err && !peer_idx_invalid
1379 * [amsdu header] <-- only if A-MSDU
1380 * [rfc1042/llc]
1381 * [payload]
1382 * [FCS] <-- at end, needs to be trimmed
1383 */
1384
1385 /* Some hardwares(QCA99x0 variants) limit number of msdus in a-msdu when
1386 * deaggregate, so that unwanted MSDU-deaggregation is avoided for
1387 * error packets. If limit exceeds, hw sends all remaining MSDUs as
1388 * a single last MSDU with this msdu limit error set.
1389 */
1390 msdu_limit_err = ath10k_rx_desc_msdu_limit_error(&ar->hw_params, rxd);
1391
1392 /* If MSDU limit error happens, then don't warn on, the partial raw MSDU
1393 * without first MSDU is expected in that case, and handled later here.
1394 */
1395 /* This probably shouldn't happen but warn just in case */
1396 if (WARN_ON_ONCE(!is_first && !msdu_limit_err))
1397 return;
1398
1399 /* This probably shouldn't happen but warn just in case */
1400 if (WARN_ON_ONCE(!(is_first && is_last) && !msdu_limit_err))
1401 return;
1402
1403 skb_trim(msdu, msdu->len - FCS_LEN);
1404
1405 /* Push original 80211 header */
1406 if (unlikely(msdu_limit_err)) {
1407 hdr = (struct ieee80211_hdr *)first_hdr;
1408 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1409 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
1410
1411 if (ieee80211_is_data_qos(hdr->frame_control)) {
1412 qos = ieee80211_get_qos_ctl(hdr);
1413 qos[0] |= IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1414 }
1415
1416 if (crypto_len)
1417 memcpy(skb_push(msdu, crypto_len),
1418 (void *)hdr + round_up(hdr_len, bytes_aligned),
1419 crypto_len);
1420
1421 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1422 }
1423
1424 /* In most cases this will be true for sniffed frames. It makes sense
1425 * to deliver them as-is without stripping the crypto param. This is
1426 * necessary for software based decryption.
1427 *
1428 * If there's no error then the frame is decrypted. At least that is
1429 * the case for frames that come in via fragmented rx indication.
1430 */
1431 if (!is_decrypted)
1432 return;
1433
1434 /* The payload is decrypted so strip crypto params. Start from tail
1435 * since hdr is used to compute some stuff.
1436 */
1437
1438 hdr = (void *)msdu->data;
1439
1440 /* Tail */
1441 if (status->flag & RX_FLAG_IV_STRIPPED) {
1442 skb_trim(msdu, msdu->len -
1443 ath10k_htt_rx_crypto_mic_len(ar, enctype));
1444
1445 skb_trim(msdu, msdu->len -
1446 ath10k_htt_rx_crypto_icv_len(ar, enctype));
1447 } else {
1448 /* MIC */
1449 if (status->flag & RX_FLAG_MIC_STRIPPED)
1450 skb_trim(msdu, msdu->len -
1451 ath10k_htt_rx_crypto_mic_len(ar, enctype));
1452
1453 /* ICV */
1454 if (status->flag & RX_FLAG_ICV_STRIPPED)
1455 skb_trim(msdu, msdu->len -
1456 ath10k_htt_rx_crypto_icv_len(ar, enctype));
1457 }
1458
1459 /* MMIC */
1460 if ((status->flag & RX_FLAG_MMIC_STRIPPED) &&
1461 !ieee80211_has_morefrags(hdr->frame_control) &&
1462 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
1463 skb_trim(msdu, msdu->len - MICHAEL_MIC_LEN);
1464
1465 /* Head */
1466 if (status->flag & RX_FLAG_IV_STRIPPED) {
1467 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1468 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
1469
1470 memmove((void *)msdu->data + crypto_len,
1471 (void *)msdu->data, hdr_len);
1472 skb_pull(msdu, crypto_len);
1473 }
1474 }
1475
1476 static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k *ar,
1477 struct sk_buff *msdu,
1478 struct ieee80211_rx_status *status,
1479 const u8 first_hdr[64],
1480 enum htt_rx_mpdu_encrypt_type enctype)
1481 {
1482 struct ieee80211_hdr *hdr;
1483 struct htt_rx_desc *rxd;
1484 size_t hdr_len;
1485 u8 da[ETH_ALEN];
1486 u8 sa[ETH_ALEN];
1487 int l3_pad_bytes;
1488 int bytes_aligned = ar->hw_params.decap_align_bytes;
1489
1490 /* Delivered decapped frame:
1491 * [nwifi 802.11 header] <-- replaced with 802.11 hdr
1492 * [rfc1042/llc]
1493 *
1494 * Note: The nwifi header doesn't have QoS Control and is
1495 * (always?) a 3addr frame.
1496 *
1497 * Note2: There's no A-MSDU subframe header. Even if it's part
1498 * of an A-MSDU.
1499 */
1500
1501 /* pull decapped header and copy SA & DA */
1502 rxd = (void *)msdu->data - sizeof(*rxd);
1503
1504 l3_pad_bytes = ath10k_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
1505 skb_put(msdu, l3_pad_bytes);
1506
1507 hdr = (struct ieee80211_hdr *)(msdu->data + l3_pad_bytes);
1508
1509 hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr);
1510 ether_addr_copy(da, ieee80211_get_DA(hdr));
1511 ether_addr_copy(sa, ieee80211_get_SA(hdr));
1512 skb_pull(msdu, hdr_len);
1513
1514 /* push original 802.11 header */
1515 hdr = (struct ieee80211_hdr *)first_hdr;
1516 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1517
1518 if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
1519 memcpy(skb_push(msdu,
1520 ath10k_htt_rx_crypto_param_len(ar, enctype)),
1521 (void *)hdr + round_up(hdr_len, bytes_aligned),
1522 ath10k_htt_rx_crypto_param_len(ar, enctype));
1523 }
1524
1525 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1526
1527 /* original 802.11 header has a different DA and in
1528 * case of 4addr it may also have different SA
1529 */
1530 hdr = (struct ieee80211_hdr *)msdu->data;
1531 ether_addr_copy(ieee80211_get_DA(hdr), da);
1532 ether_addr_copy(ieee80211_get_SA(hdr), sa);
1533 }
1534
1535 static void *ath10k_htt_rx_h_find_rfc1042(struct ath10k *ar,
1536 struct sk_buff *msdu,
1537 enum htt_rx_mpdu_encrypt_type enctype)
1538 {
1539 struct ieee80211_hdr *hdr;
1540 struct htt_rx_desc *rxd;
1541 size_t hdr_len, crypto_len;
1542 void *rfc1042;
1543 bool is_first, is_last, is_amsdu;
1544 int bytes_aligned = ar->hw_params.decap_align_bytes;
1545
1546 rxd = (void *)msdu->data - sizeof(*rxd);
1547 hdr = (void *)rxd->rx_hdr_status;
1548
1549 is_first = !!(rxd->msdu_end.common.info0 &
1550 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
1551 is_last = !!(rxd->msdu_end.common.info0 &
1552 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
1553 is_amsdu = !(is_first && is_last);
1554
1555 rfc1042 = hdr;
1556
1557 if (is_first) {
1558 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1559 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
1560
1561 rfc1042 += round_up(hdr_len, bytes_aligned) +
1562 round_up(crypto_len, bytes_aligned);
1563 }
1564
1565 if (is_amsdu)
1566 rfc1042 += sizeof(struct amsdu_subframe_hdr);
1567
1568 return rfc1042;
1569 }
1570
1571 static void ath10k_htt_rx_h_undecap_eth(struct ath10k *ar,
1572 struct sk_buff *msdu,
1573 struct ieee80211_rx_status *status,
1574 const u8 first_hdr[64],
1575 enum htt_rx_mpdu_encrypt_type enctype)
1576 {
1577 struct ieee80211_hdr *hdr;
1578 struct ethhdr *eth;
1579 size_t hdr_len;
1580 void *rfc1042;
1581 u8 da[ETH_ALEN];
1582 u8 sa[ETH_ALEN];
1583 int l3_pad_bytes;
1584 struct htt_rx_desc *rxd;
1585 int bytes_aligned = ar->hw_params.decap_align_bytes;
1586
1587 /* Delivered decapped frame:
1588 * [eth header] <-- replaced with 802.11 hdr & rfc1042/llc
1589 * [payload]
1590 */
1591
1592 rfc1042 = ath10k_htt_rx_h_find_rfc1042(ar, msdu, enctype);
1593 if (WARN_ON_ONCE(!rfc1042))
1594 return;
1595
1596 rxd = (void *)msdu->data - sizeof(*rxd);
1597 l3_pad_bytes = ath10k_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
1598 skb_put(msdu, l3_pad_bytes);
1599 skb_pull(msdu, l3_pad_bytes);
1600
1601 /* pull decapped header and copy SA & DA */
1602 eth = (struct ethhdr *)msdu->data;
1603 ether_addr_copy(da, eth->h_dest);
1604 ether_addr_copy(sa, eth->h_source);
1605 skb_pull(msdu, sizeof(struct ethhdr));
1606
1607 /* push rfc1042/llc/snap */
1608 memcpy(skb_push(msdu, sizeof(struct rfc1042_hdr)), rfc1042,
1609 sizeof(struct rfc1042_hdr));
1610
1611 /* push original 802.11 header */
1612 hdr = (struct ieee80211_hdr *)first_hdr;
1613 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1614
1615 if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
1616 memcpy(skb_push(msdu,
1617 ath10k_htt_rx_crypto_param_len(ar, enctype)),
1618 (void *)hdr + round_up(hdr_len, bytes_aligned),
1619 ath10k_htt_rx_crypto_param_len(ar, enctype));
1620 }
1621
1622 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1623
1624 /* original 802.11 header has a different DA and in
1625 * case of 4addr it may also have different SA
1626 */
1627 hdr = (struct ieee80211_hdr *)msdu->data;
1628 ether_addr_copy(ieee80211_get_DA(hdr), da);
1629 ether_addr_copy(ieee80211_get_SA(hdr), sa);
1630 }
1631
1632 static void ath10k_htt_rx_h_undecap_snap(struct ath10k *ar,
1633 struct sk_buff *msdu,
1634 struct ieee80211_rx_status *status,
1635 const u8 first_hdr[64],
1636 enum htt_rx_mpdu_encrypt_type enctype)
1637 {
1638 struct ieee80211_hdr *hdr;
1639 size_t hdr_len;
1640 int l3_pad_bytes;
1641 struct htt_rx_desc *rxd;
1642 int bytes_aligned = ar->hw_params.decap_align_bytes;
1643
1644 /* Delivered decapped frame:
1645 * [amsdu header] <-- replaced with 802.11 hdr
1646 * [rfc1042/llc]
1647 * [payload]
1648 */
1649
1650 rxd = (void *)msdu->data - sizeof(*rxd);
1651 l3_pad_bytes = ath10k_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
1652
1653 skb_put(msdu, l3_pad_bytes);
1654 skb_pull(msdu, sizeof(struct amsdu_subframe_hdr) + l3_pad_bytes);
1655
1656 hdr = (struct ieee80211_hdr *)first_hdr;
1657 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1658
1659 if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
1660 memcpy(skb_push(msdu,
1661 ath10k_htt_rx_crypto_param_len(ar, enctype)),
1662 (void *)hdr + round_up(hdr_len, bytes_aligned),
1663 ath10k_htt_rx_crypto_param_len(ar, enctype));
1664 }
1665
1666 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1667 }
1668
1669 static void ath10k_htt_rx_h_undecap(struct ath10k *ar,
1670 struct sk_buff *msdu,
1671 struct ieee80211_rx_status *status,
1672 u8 first_hdr[64],
1673 enum htt_rx_mpdu_encrypt_type enctype,
1674 bool is_decrypted)
1675 {
1676 struct htt_rx_desc *rxd;
1677 enum rx_msdu_decap_format decap;
1678
1679 /* First msdu's decapped header:
1680 * [802.11 header] <-- padded to 4 bytes long
1681 * [crypto param] <-- padded to 4 bytes long
1682 * [amsdu header] <-- only if A-MSDU
1683 * [rfc1042/llc]
1684 *
1685 * Other (2nd, 3rd, ..) msdu's decapped header:
1686 * [amsdu header] <-- only if A-MSDU
1687 * [rfc1042/llc]
1688 */
1689
1690 rxd = (void *)msdu->data - sizeof(*rxd);
1691 decap = MS(__le32_to_cpu(rxd->msdu_start.common.info1),
1692 RX_MSDU_START_INFO1_DECAP_FORMAT);
1693
1694 switch (decap) {
1695 case RX_MSDU_DECAP_RAW:
1696 ath10k_htt_rx_h_undecap_raw(ar, msdu, status, enctype,
1697 is_decrypted, first_hdr);
1698 break;
1699 case RX_MSDU_DECAP_NATIVE_WIFI:
1700 ath10k_htt_rx_h_undecap_nwifi(ar, msdu, status, first_hdr,
1701 enctype);
1702 break;
1703 case RX_MSDU_DECAP_ETHERNET2_DIX:
1704 ath10k_htt_rx_h_undecap_eth(ar, msdu, status, first_hdr, enctype);
1705 break;
1706 case RX_MSDU_DECAP_8023_SNAP_LLC:
1707 ath10k_htt_rx_h_undecap_snap(ar, msdu, status, first_hdr,
1708 enctype);
1709 break;
1710 }
1711 }
1712
1713 static int ath10k_htt_rx_get_csum_state(struct sk_buff *skb)
1714 {
1715 struct htt_rx_desc *rxd;
1716 u32 flags, info;
1717 bool is_ip4, is_ip6;
1718 bool is_tcp, is_udp;
1719 bool ip_csum_ok, tcpudp_csum_ok;
1720
1721 rxd = (void *)skb->data - sizeof(*rxd);
1722 flags = __le32_to_cpu(rxd->attention.flags);
1723 info = __le32_to_cpu(rxd->msdu_start.common.info1);
1724
1725 is_ip4 = !!(info & RX_MSDU_START_INFO1_IPV4_PROTO);
1726 is_ip6 = !!(info & RX_MSDU_START_INFO1_IPV6_PROTO);
1727 is_tcp = !!(info & RX_MSDU_START_INFO1_TCP_PROTO);
1728 is_udp = !!(info & RX_MSDU_START_INFO1_UDP_PROTO);
1729 ip_csum_ok = !(flags & RX_ATTENTION_FLAGS_IP_CHKSUM_FAIL);
1730 tcpudp_csum_ok = !(flags & RX_ATTENTION_FLAGS_TCP_UDP_CHKSUM_FAIL);
1731
1732 if (!is_ip4 && !is_ip6)
1733 return CHECKSUM_NONE;
1734 if (!is_tcp && !is_udp)
1735 return CHECKSUM_NONE;
1736 if (!ip_csum_ok)
1737 return CHECKSUM_NONE;
1738 if (!tcpudp_csum_ok)
1739 return CHECKSUM_NONE;
1740
1741 return CHECKSUM_UNNECESSARY;
1742 }
1743
1744 static void ath10k_htt_rx_h_csum_offload(struct sk_buff *msdu)
1745 {
1746 msdu->ip_summed = ath10k_htt_rx_get_csum_state(msdu);
1747 }
1748
1749 static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb,
1750 u16 offset,
1751 enum htt_rx_mpdu_encrypt_type enctype)
1752 {
1753 struct ieee80211_hdr *hdr;
1754 u64 pn = 0;
1755 u8 *ehdr;
1756
1757 hdr = (struct ieee80211_hdr *)(skb->data + offset);
1758 ehdr = skb->data + offset + ieee80211_hdrlen(hdr->frame_control);
1759
1760 if (enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) {
1761 pn = ehdr[0];
1762 pn |= (u64)ehdr[1] << 8;
1763 pn |= (u64)ehdr[4] << 16;
1764 pn |= (u64)ehdr[5] << 24;
1765 pn |= (u64)ehdr[6] << 32;
1766 pn |= (u64)ehdr[7] << 40;
1767 }
1768 return pn;
1769 }
1770
1771 static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar,
1772 struct sk_buff *skb,
1773 u16 peer_id,
1774 u16 offset,
1775 enum htt_rx_mpdu_encrypt_type enctype)
1776 {
1777 struct ath10k_peer *peer;
1778 union htt_rx_pn_t *last_pn, new_pn = {0};
1779 struct ieee80211_hdr *hdr;
1780 bool more_frags;
1781 u8 tid, frag_number;
1782 u32 seq;
1783
1784 peer = ath10k_peer_find_by_id(ar, peer_id);
1785 if (!peer) {
1786 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n");
1787 return false;
1788 }
1789
1790 hdr = (struct ieee80211_hdr *)(skb->data + offset);
1791 if (ieee80211_is_data_qos(hdr->frame_control))
1792 tid = ieee80211_get_tid(hdr);
1793 else
1794 tid = ATH10K_TXRX_NON_QOS_TID;
1795
1796 last_pn = &peer->frag_tids_last_pn[tid];
1797 new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, offset, enctype);
1798 more_frags = ieee80211_has_morefrags(hdr->frame_control);
1799 frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
1800 seq = (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
1801
1802 if (frag_number == 0) {
1803 last_pn->pn48 = new_pn.pn48;
1804 peer->frag_tids_seq[tid] = seq;
1805 } else {
1806 if (seq != peer->frag_tids_seq[tid])
1807 return false;
1808
1809 if (new_pn.pn48 != last_pn->pn48 + 1)
1810 return false;
1811
1812 last_pn->pn48 = new_pn.pn48;
1813 }
1814
1815 return true;
1816 }
1817
1818 static void ath10k_htt_rx_h_mpdu(struct ath10k *ar,
1819 struct sk_buff_head *amsdu,
1820 struct ieee80211_rx_status *status,
1821 bool fill_crypt_header,
1822 u8 *rx_hdr,
1823 enum ath10k_pkt_rx_err *err,
1824 u16 peer_id,
1825 bool frag)
1826 {
1827 struct sk_buff *first;
1828 struct sk_buff *last;
1829 struct sk_buff *msdu, *temp;
1830 struct htt_rx_desc *rxd;
1831 struct ieee80211_hdr *hdr;
1832 enum htt_rx_mpdu_encrypt_type enctype;
1833 u8 first_hdr[64];
1834 u8 *qos;
1835 bool has_fcs_err;
1836 bool has_crypto_err;
1837 bool has_tkip_err;
1838 bool has_peer_idx_invalid;
1839 bool is_decrypted;
1840 bool is_mgmt;
1841 u32 attention;
1842 bool frag_pn_check = true;
1843
1844 if (skb_queue_empty(amsdu))
1845 return;
1846
1847 first = skb_peek(amsdu);
1848 rxd = (void *)first->data - sizeof(*rxd);
1849
1850 is_mgmt = !!(rxd->attention.flags &
1851 __cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE));
1852
1853 enctype = MS(__le32_to_cpu(rxd->mpdu_start.info0),
1854 RX_MPDU_START_INFO0_ENCRYPT_TYPE);
1855
1856 /* First MSDU's Rx descriptor in an A-MSDU contains full 802.11
1857 * decapped header. It'll be used for undecapping of each MSDU.
1858 */
1859 hdr = (void *)rxd->rx_hdr_status;
1860 memcpy(first_hdr, hdr, RX_HTT_HDR_STATUS_LEN);
1861
1862 if (rx_hdr)
1863 memcpy(rx_hdr, hdr, RX_HTT_HDR_STATUS_LEN);
1864
1865 /* Each A-MSDU subframe will use the original header as the base and be
1866 * reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl.
1867 */
1868 hdr = (void *)first_hdr;
1869
1870 if (ieee80211_is_data_qos(hdr->frame_control)) {
1871 qos = ieee80211_get_qos_ctl(hdr);
1872 qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1873 }
1874
1875 /* Some attention flags are valid only in the last MSDU. */
1876 last = skb_peek_tail(amsdu);
1877 rxd = (void *)last->data - sizeof(*rxd);
1878 attention = __le32_to_cpu(rxd->attention.flags);
1879
1880 has_fcs_err = !!(attention & RX_ATTENTION_FLAGS_FCS_ERR);
1881 has_crypto_err = !!(attention & RX_ATTENTION_FLAGS_DECRYPT_ERR);
1882 has_tkip_err = !!(attention & RX_ATTENTION_FLAGS_TKIP_MIC_ERR);
1883 has_peer_idx_invalid = !!(attention & RX_ATTENTION_FLAGS_PEER_IDX_INVALID);
1884
1885 /* Note: If hardware captures an encrypted frame that it can't decrypt,
1886 * e.g. due to fcs error, missing peer or invalid key data it will
1887 * report the frame as raw.
1888 */
1889 is_decrypted = (enctype != HTT_RX_MPDU_ENCRYPT_NONE &&
1890 !has_fcs_err &&
1891 !has_crypto_err &&
1892 !has_peer_idx_invalid);
1893
1894 /* Clear per-MPDU flags while leaving per-PPDU flags intact. */
1895 status->flag &= ~(RX_FLAG_FAILED_FCS_CRC |
1896 RX_FLAG_MMIC_ERROR |
1897 RX_FLAG_DECRYPTED |
1898 RX_FLAG_IV_STRIPPED |
1899 RX_FLAG_ONLY_MONITOR |
1900 RX_FLAG_MMIC_STRIPPED);
1901
1902 if (has_fcs_err)
1903 status->flag |= RX_FLAG_FAILED_FCS_CRC;
1904
1905 if (has_tkip_err)
1906 status->flag |= RX_FLAG_MMIC_ERROR;
1907
1908 if (err) {
1909 if (has_fcs_err)
1910 *err = ATH10K_PKT_RX_ERR_FCS;
1911 else if (has_tkip_err)
1912 *err = ATH10K_PKT_RX_ERR_TKIP;
1913 else if (has_crypto_err)
1914 *err = ATH10K_PKT_RX_ERR_CRYPT;
1915 else if (has_peer_idx_invalid)
1916 *err = ATH10K_PKT_RX_ERR_PEER_IDX_INVAL;
1917 }
1918
1919 /* Firmware reports all necessary management frames via WMI already.
1920 * They are not reported to monitor interfaces at all so pass the ones
1921 * coming via HTT to monitor interfaces instead. This simplifies
1922 * matters a lot.
1923 */
1924 if (is_mgmt)
1925 status->flag |= RX_FLAG_ONLY_MONITOR;
1926
1927 if (is_decrypted) {
1928 status->flag |= RX_FLAG_DECRYPTED;
1929
1930 if (likely(!is_mgmt))
1931 status->flag |= RX_FLAG_MMIC_STRIPPED;
1932
1933 if (fill_crypt_header)
1934 status->flag |= RX_FLAG_MIC_STRIPPED |
1935 RX_FLAG_ICV_STRIPPED;
1936 else
1937 status->flag |= RX_FLAG_IV_STRIPPED;
1938 }
1939
1940 skb_queue_walk(amsdu, msdu) {
1941 if (frag && !fill_crypt_header && is_decrypted &&
1942 enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2)
1943 frag_pn_check = ath10k_htt_rx_h_frag_pn_check(ar,
1944 msdu,
1945 peer_id,
1946 0,
1947 enctype);
1948
1949 if (!frag_pn_check) {
1950 /* Discard the fragment with invalid PN */
1951 temp = msdu->prev;
1952 __skb_unlink(msdu, amsdu);
1953 dev_kfree_skb_any(msdu);
1954 msdu = temp;
1955 frag_pn_check = true;
1956 continue;
1957 }
1958
1959 ath10k_htt_rx_h_csum_offload(msdu);
1960
1961 if (frag && !fill_crypt_header &&
1962 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
1963 status->flag &= ~RX_FLAG_MMIC_STRIPPED;
1964
1965 ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype,
1966 is_decrypted);
1967
1968 /* Undecapping involves copying the original 802.11 header back
1969 * to sk_buff. If frame is protected and hardware has decrypted
1970 * it then remove the protected bit.
1971 */
1972 if (!is_decrypted)
1973 continue;
1974 if (is_mgmt)
1975 continue;
1976
1977 if (fill_crypt_header)
1978 continue;
1979
1980 hdr = (void *)msdu->data;
1981 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1982
1983 if (frag && !fill_crypt_header &&
1984 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
1985 status->flag &= ~RX_FLAG_IV_STRIPPED &
1986 ~RX_FLAG_MMIC_STRIPPED;
1987 }
1988 }
1989
1990 static void ath10k_htt_rx_h_enqueue(struct ath10k *ar,
1991 struct sk_buff_head *amsdu,
1992 struct ieee80211_rx_status *status)
1993 {
1994 struct sk_buff *msdu;
1995 struct sk_buff *first_subframe;
1996
1997 first_subframe = skb_peek(amsdu);
1998
1999 while ((msdu = __skb_dequeue(amsdu))) {
2000 /* Setup per-MSDU flags */
2001 if (skb_queue_empty(amsdu))
2002 status->flag &= ~RX_FLAG_AMSDU_MORE;
2003 else
2004 status->flag |= RX_FLAG_AMSDU_MORE;
2005
2006 if (msdu == first_subframe) {
2007 first_subframe = NULL;
2008 status->flag &= ~RX_FLAG_ALLOW_SAME_PN;
2009 } else {
2010 status->flag |= RX_FLAG_ALLOW_SAME_PN;
2011 }
2012
2013 ath10k_htt_rx_h_queue_msdu(ar, status, msdu);
2014 }
2015 }
2016
2017 static int ath10k_unchain_msdu(struct sk_buff_head *amsdu,
2018 unsigned long *unchain_cnt)
2019 {
2020 struct sk_buff *skb, *first;
2021 int space;
2022 int total_len = 0;
2023 int amsdu_len = skb_queue_len(amsdu);
2024
2025 /* TODO: Might could optimize this by using
2026 * skb_try_coalesce or similar method to
2027 * decrease copying, or maybe get mac80211 to
2028 * provide a way to just receive a list of
2029 * skb?
2030 */
2031
2032 first = __skb_dequeue(amsdu);
2033
2034 /* Allocate total length all at once. */
2035 skb_queue_walk(amsdu, skb)
2036 total_len += skb->len;
2037
2038 space = total_len - skb_tailroom(first);
2039 if ((space > 0) &&
2040 (pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0)) {
2041 /* TODO: bump some rx-oom error stat */
2042 /* put it back together so we can free the
2043 * whole list at once.
2044 */
2045 __skb_queue_head(amsdu, first);
2046 return -1;
2047 }
2048
2049 /* Walk list again, copying contents into
2050 * msdu_head
2051 */
2052 while ((skb = __skb_dequeue(amsdu))) {
2053 skb_copy_from_linear_data(skb, skb_put(first, skb->len),
2054 skb->len);
2055 dev_kfree_skb_any(skb);
2056 }
2057
2058 __skb_queue_head(amsdu, first);
2059
2060 *unchain_cnt += amsdu_len - 1;
2061
2062 return 0;
2063 }
2064
2065 static void ath10k_htt_rx_h_unchain(struct ath10k *ar,
2066 struct sk_buff_head *amsdu,
2067 unsigned long *drop_cnt,
2068 unsigned long *unchain_cnt)
2069 {
2070 struct sk_buff *first;
2071 struct htt_rx_desc *rxd;
2072 enum rx_msdu_decap_format decap;
2073
2074 first = skb_peek(amsdu);
2075 rxd = (void *)first->data - sizeof(*rxd);
2076 decap = MS(__le32_to_cpu(rxd->msdu_start.common.info1),
2077 RX_MSDU_START_INFO1_DECAP_FORMAT);
2078
2079 /* FIXME: Current unchaining logic can only handle simple case of raw
2080 * msdu chaining. If decapping is other than raw the chaining may be
2081 * more complex and this isn't handled by the current code. Don't even
2082 * try re-constructing such frames - it'll be pretty much garbage.
2083 */
2084 if (decap != RX_MSDU_DECAP_RAW ||
2085 skb_queue_len(amsdu) != 1 + rxd->frag_info.ring2_more_count) {
2086 *drop_cnt += skb_queue_len(amsdu);
2087 __skb_queue_purge(amsdu);
2088 return;
2089 }
2090
2091 ath10k_unchain_msdu(amsdu, unchain_cnt);
2092 }
2093
2094 static bool ath10k_htt_rx_amsdu_allowed(struct ath10k *ar,
2095 struct sk_buff_head *amsdu,
2096 struct ieee80211_rx_status *rx_status)
2097 {
2098 /* FIXME: It might be a good idea to do some fuzzy-testing to drop
2099 * invalid/dangerous frames.
2100 */
2101
2102 if (!rx_status->freq) {
2103 ath10k_dbg(ar, ATH10K_DBG_HTT, "no channel configured; ignoring frame(s)!\n");
2104 return false;
2105 }
2106
2107 if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags)) {
2108 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx cac running\n");
2109 return false;
2110 }
2111
2112 return true;
2113 }
2114
2115 static void ath10k_htt_rx_h_filter(struct ath10k *ar,
2116 struct sk_buff_head *amsdu,
2117 struct ieee80211_rx_status *rx_status,
2118 unsigned long *drop_cnt)
2119 {
2120 if (skb_queue_empty(amsdu))
2121 return;
2122
2123 if (ath10k_htt_rx_amsdu_allowed(ar, amsdu, rx_status))
2124 return;
2125
2126 if (drop_cnt)
2127 *drop_cnt += skb_queue_len(amsdu);
2128
2129 __skb_queue_purge(amsdu);
2130 }
2131
2132 static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt)
2133 {
2134 struct ath10k *ar = htt->ar;
2135 struct ieee80211_rx_status *rx_status = &htt->rx_status;
2136 struct sk_buff_head amsdu;
2137 int ret;
2138 unsigned long drop_cnt = 0;
2139 unsigned long unchain_cnt = 0;
2140 unsigned long drop_cnt_filter = 0;
2141 unsigned long msdus_to_queue, num_msdus;
2142 enum ath10k_pkt_rx_err err = ATH10K_PKT_RX_ERR_MAX;
2143 u8 first_hdr[RX_HTT_HDR_STATUS_LEN];
2144
2145 __skb_queue_head_init(&amsdu);
2146
2147 spin_lock_bh(&htt->rx_ring.lock);
2148 if (htt->rx_confused) {
2149 spin_unlock_bh(&htt->rx_ring.lock);
2150 return -EIO;
2151 }
2152 ret = ath10k_htt_rx_amsdu_pop(htt, &amsdu);
2153 spin_unlock_bh(&htt->rx_ring.lock);
2154
2155 if (ret < 0) {
2156 ath10k_warn(ar, "rx ring became corrupted: %d\n", ret);
2157 __skb_queue_purge(&amsdu);
2158 /* FIXME: It's probably a good idea to reboot the
2159 * device instead of leaving it inoperable.
2160 */
2161 htt->rx_confused = true;
2162 return ret;
2163 }
2164
2165 num_msdus = skb_queue_len(&amsdu);
2166
2167 ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff);
2168
2169 /* only for ret = 1 indicates chained msdus */
2170 if (ret > 0)
2171 ath10k_htt_rx_h_unchain(ar, &amsdu, &drop_cnt, &unchain_cnt);
2172
2173 ath10k_htt_rx_h_filter(ar, &amsdu, rx_status, &drop_cnt_filter);
2174 ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err, 0,
2175 false);
2176 msdus_to_queue = skb_queue_len(&amsdu);
2177 ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status);
2178
2179 ath10k_sta_update_rx_tid_stats(ar, first_hdr, num_msdus, err,
2180 unchain_cnt, drop_cnt, drop_cnt_filter,
2181 msdus_to_queue);
2182
2183 return 0;
2184 }
2185
2186 static void ath10k_htt_rx_mpdu_desc_pn_hl(struct htt_hl_rx_desc *rx_desc,
2187 union htt_rx_pn_t *pn,
2188 int pn_len_bits)
2189 {
2190 switch (pn_len_bits) {
2191 case 48:
2192 pn->pn48 = __le32_to_cpu(rx_desc->pn_31_0) +
2193 ((u64)(__le32_to_cpu(rx_desc->u0.pn_63_32) & 0xFFFF) << 32);
2194 break;
2195 case 24:
2196 pn->pn24 = __le32_to_cpu(rx_desc->pn_31_0);
2197 break;
2198 }
2199 }
2200
2201 static bool ath10k_htt_rx_pn_cmp48(union htt_rx_pn_t *new_pn,
2202 union htt_rx_pn_t *old_pn)
2203 {
2204 return ((new_pn->pn48 & 0xffffffffffffULL) <=
2205 (old_pn->pn48 & 0xffffffffffffULL));
2206 }
2207
2208 static bool ath10k_htt_rx_pn_check_replay_hl(struct ath10k *ar,
2209 struct ath10k_peer *peer,
2210 struct htt_rx_indication_hl *rx)
2211 {
2212 bool last_pn_valid, pn_invalid = false;
2213 enum htt_txrx_sec_cast_type sec_index;
2214 enum htt_security_types sec_type;
2215 union htt_rx_pn_t new_pn = {0};
2216 struct htt_hl_rx_desc *rx_desc;
2217 union htt_rx_pn_t *last_pn;
2218 u32 rx_desc_info, tid;
2219 int num_mpdu_ranges;
2220
2221 lockdep_assert_held(&ar->data_lock);
2222
2223 if (!peer)
2224 return false;
2225
2226 if (!(rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU))
2227 return false;
2228
2229 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2230 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2231
2232 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges];
2233 rx_desc_info = __le32_to_cpu(rx_desc->info);
2234
2235 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED))
2236 return false;
2237
2238 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2239 last_pn_valid = peer->tids_last_pn_valid[tid];
2240 last_pn = &peer->tids_last_pn[tid];
2241
2242 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST))
2243 sec_index = HTT_TXRX_SEC_MCAST;
2244 else
2245 sec_index = HTT_TXRX_SEC_UCAST;
2246
2247 sec_type = peer->rx_pn[sec_index].sec_type;
2248 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2249
2250 if (sec_type != HTT_SECURITY_AES_CCMP &&
2251 sec_type != HTT_SECURITY_TKIP &&
2252 sec_type != HTT_SECURITY_TKIP_NOMIC)
2253 return false;
2254
2255 if (last_pn_valid)
2256 pn_invalid = ath10k_htt_rx_pn_cmp48(&new_pn, last_pn);
2257 else
2258 peer->tids_last_pn_valid[tid] = true;
2259
2260 if (!pn_invalid)
2261 last_pn->pn48 = new_pn.pn48;
2262
2263 return pn_invalid;
2264 }
2265
2266 static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt,
2267 struct htt_rx_indication_hl *rx,
2268 struct sk_buff *skb,
2269 enum htt_rx_pn_check_type check_pn_type,
2270 enum htt_rx_tkip_demic_type tkip_mic_type)
2271 {
2272 struct ath10k *ar = htt->ar;
2273 struct ath10k_peer *peer;
2274 struct htt_rx_indication_mpdu_range *mpdu_ranges;
2275 struct fw_rx_desc_hl *fw_desc;
2276 enum htt_txrx_sec_cast_type sec_index;
2277 enum htt_security_types sec_type;
2278 union htt_rx_pn_t new_pn = {0};
2279 struct htt_hl_rx_desc *rx_desc;
2280 struct ieee80211_hdr *hdr;
2281 struct ieee80211_rx_status *rx_status;
2282 u16 peer_id;
2283 u8 rx_desc_len;
2284 int num_mpdu_ranges;
2285 size_t tot_hdr_len;
2286 struct ieee80211_channel *ch;
2287 bool pn_invalid, qos, first_msdu;
2288 u32 tid, rx_desc_info;
2289
2290 peer_id = __le16_to_cpu(rx->hdr.peer_id);
2291 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2292
2293 spin_lock_bh(&ar->data_lock);
2294 peer = ath10k_peer_find_by_id(ar, peer_id);
2295 spin_unlock_bh(&ar->data_lock);
2296 if (!peer && peer_id != HTT_INVALID_PEERID)
2297 ath10k_warn(ar, "Got RX ind from invalid peer: %u\n", peer_id);
2298
2299 if (!peer)
2300 return true;
2301
2302 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2303 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2304 mpdu_ranges = htt_rx_ind_get_mpdu_ranges_hl(rx);
2305 fw_desc = &rx->fw_desc;
2306 rx_desc_len = fw_desc->len;
2307
2308 if (fw_desc->u.bits.discard) {
2309 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n");
2310 goto err;
2311 }
2312
2313 /* I have not yet seen any case where num_mpdu_ranges > 1.
2314 * qcacld does not seem handle that case either, so we introduce the
2315 * same limitiation here as well.
2316 */
2317 if (num_mpdu_ranges > 1)
2318 ath10k_warn(ar,
2319 "Unsupported number of MPDU ranges: %d, ignoring all but the first\n",
2320 num_mpdu_ranges);
2321
2322 if (mpdu_ranges->mpdu_range_status !=
2323 HTT_RX_IND_MPDU_STATUS_OK &&
2324 mpdu_ranges->mpdu_range_status !=
2325 HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) {
2326 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt mpdu_range_status %d\n",
2327 mpdu_ranges->mpdu_range_status);
2328 goto err;
2329 }
2330
2331 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges];
2332 rx_desc_info = __le32_to_cpu(rx_desc->info);
2333
2334 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST))
2335 sec_index = HTT_TXRX_SEC_MCAST;
2336 else
2337 sec_index = HTT_TXRX_SEC_UCAST;
2338
2339 sec_type = peer->rx_pn[sec_index].sec_type;
2340 first_msdu = rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU;
2341
2342 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2343
2344 if (check_pn_type == HTT_RX_PN_CHECK && tid >= IEEE80211_NUM_TIDS) {
2345 spin_lock_bh(&ar->data_lock);
2346 pn_invalid = ath10k_htt_rx_pn_check_replay_hl(ar, peer, rx);
2347 spin_unlock_bh(&ar->data_lock);
2348
2349 if (pn_invalid)
2350 goto err;
2351 }
2352
2353 /* Strip off all headers before the MAC header before delivery to
2354 * mac80211
2355 */
2356 tot_hdr_len = sizeof(struct htt_resp_hdr) + sizeof(rx->hdr) +
2357 sizeof(rx->ppdu) + sizeof(rx->prefix) +
2358 sizeof(rx->fw_desc) +
2359 sizeof(*mpdu_ranges) * num_mpdu_ranges + rx_desc_len;
2360
2361 skb_pull(skb, tot_hdr_len);
2362
2363 hdr = (struct ieee80211_hdr *)skb->data;
2364 qos = ieee80211_is_data_qos(hdr->frame_control);
2365
2366 rx_status = IEEE80211_SKB_RXCB(skb);
2367 memset(rx_status, 0, sizeof(*rx_status));
2368
2369 if (rx->ppdu.combined_rssi == 0) {
2370 /* SDIO firmware does not provide signal */
2371 rx_status->signal = 0;
2372 rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL;
2373 } else {
2374 rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
2375 rx->ppdu.combined_rssi;
2376 rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
2377 }
2378
2379 spin_lock_bh(&ar->data_lock);
2380 ch = ar->scan_channel;
2381 if (!ch)
2382 ch = ar->rx_channel;
2383 if (!ch)
2384 ch = ath10k_htt_rx_h_any_channel(ar);
2385 if (!ch)
2386 ch = ar->tgt_oper_chan;
2387 spin_unlock_bh(&ar->data_lock);
2388
2389 if (ch) {
2390 rx_status->band = ch->band;
2391 rx_status->freq = ch->center_freq;
2392 }
2393 if (rx->fw_desc.flags & FW_RX_DESC_FLAGS_LAST_MSDU)
2394 rx_status->flag &= ~RX_FLAG_AMSDU_MORE;
2395 else
2396 rx_status->flag |= RX_FLAG_AMSDU_MORE;
2397
2398 /* Not entirely sure about this, but all frames from the chipset has
2399 * the protected flag set even though they have already been decrypted.
2400 * Unmasking this flag is necessary in order for mac80211 not to drop
2401 * the frame.
2402 * TODO: Verify this is always the case or find out a way to check
2403 * if there has been hw decryption.
2404 */
2405 if (ieee80211_has_protected(hdr->frame_control)) {
2406 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2407 rx_status->flag |= RX_FLAG_DECRYPTED |
2408 RX_FLAG_IV_STRIPPED |
2409 RX_FLAG_MMIC_STRIPPED;
2410
2411 if (tid < IEEE80211_NUM_TIDS &&
2412 first_msdu &&
2413 check_pn_type == HTT_RX_PN_CHECK &&
2414 (sec_type == HTT_SECURITY_AES_CCMP ||
2415 sec_type == HTT_SECURITY_TKIP ||
2416 sec_type == HTT_SECURITY_TKIP_NOMIC)) {
2417 u8 offset, *ivp, i;
2418 s8 keyidx = 0;
2419 __le64 pn48 = cpu_to_le64(new_pn.pn48);
2420
2421 hdr = (struct ieee80211_hdr *)skb->data;
2422 offset = ieee80211_hdrlen(hdr->frame_control);
2423 hdr->frame_control |= __cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2424 rx_status->flag &= ~RX_FLAG_IV_STRIPPED;
2425
2426 memmove(skb->data - IEEE80211_CCMP_HDR_LEN,
2427 skb->data, offset);
2428 skb_push(skb, IEEE80211_CCMP_HDR_LEN);
2429 ivp = skb->data + offset;
2430 memset(skb->data + offset, 0, IEEE80211_CCMP_HDR_LEN);
2431 /* Ext IV */
2432 ivp[IEEE80211_WEP_IV_LEN - 1] |= ATH10K_IEEE80211_EXTIV;
2433
2434 for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
2435 if (peer->keys[i] &&
2436 peer->keys[i]->flags & IEEE80211_KEY_FLAG_PAIRWISE)
2437 keyidx = peer->keys[i]->keyidx;
2438 }
2439
2440 /* Key ID */
2441 ivp[IEEE80211_WEP_IV_LEN - 1] |= keyidx << 6;
2442
2443 if (sec_type == HTT_SECURITY_AES_CCMP) {
2444 rx_status->flag |= RX_FLAG_MIC_STRIPPED;
2445 /* pn 0, pn 1 */
2446 memcpy(skb->data + offset, &pn48, 2);
2447 /* pn 1, pn 3 , pn 34 , pn 5 */
2448 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4);
2449 } else {
2450 rx_status->flag |= RX_FLAG_ICV_STRIPPED;
2451 /* TSC 0 */
2452 memcpy(skb->data + offset + 2, &pn48, 1);
2453 /* TSC 1 */
2454 memcpy(skb->data + offset, ((u8 *)&pn48) + 1, 1);
2455 /* TSC 2 , TSC 3 , TSC 4 , TSC 5*/
2456 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4);
2457 }
2458 }
2459 }
2460
2461 if (tkip_mic_type == HTT_RX_TKIP_MIC)
2462 rx_status->flag &= ~RX_FLAG_IV_STRIPPED &
2463 ~RX_FLAG_MMIC_STRIPPED;
2464
2465 if (mpdu_ranges->mpdu_range_status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR)
2466 rx_status->flag |= RX_FLAG_MMIC_ERROR;
2467
2468 if (!qos && tid < IEEE80211_NUM_TIDS) {
2469 u8 offset;
2470 __le16 qos_ctrl = 0;
2471
2472 hdr = (struct ieee80211_hdr *)skb->data;
2473 offset = ieee80211_hdrlen(hdr->frame_control);
2474
2475 hdr->frame_control |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
2476 memmove(skb->data - IEEE80211_QOS_CTL_LEN, skb->data, offset);
2477 skb_push(skb, IEEE80211_QOS_CTL_LEN);
2478 qos_ctrl = cpu_to_le16(tid);
2479 memcpy(skb->data + offset, &qos_ctrl, IEEE80211_QOS_CTL_LEN);
2480 }
2481
2482 if (ar->napi.dev)
2483 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi);
2484 else
2485 ieee80211_rx_ni(ar->hw, skb);
2486
2487 /* We have delivered the skb to the upper layers (mac80211) so we
2488 * must not free it.
2489 */
2490 return false;
2491 err:
2492 /* Tell the caller that it must free the skb since we have not
2493 * consumed it
2494 */
2495 return true;
2496 }
2497
2498 static int ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff *skb,
2499 u16 head_len,
2500 u16 hdr_len)
2501 {
2502 u8 *ivp, *orig_hdr;
2503
2504 orig_hdr = skb->data;
2505 ivp = orig_hdr + hdr_len + head_len;
2506
2507 /* the ExtIV bit is always set to 1 for TKIP */
2508 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2509 return -EINVAL;
2510
2511 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
2512 skb_pull(skb, IEEE80211_TKIP_IV_LEN);
2513 skb_trim(skb, skb->len - ATH10K_IEEE80211_TKIP_MICLEN);
2514 return 0;
2515 }
2516
2517 static int ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff *skb,
2518 u16 head_len,
2519 u16 hdr_len)
2520 {
2521 u8 *ivp, *orig_hdr;
2522
2523 orig_hdr = skb->data;
2524 ivp = orig_hdr + hdr_len + head_len;
2525
2526 /* the ExtIV bit is always set to 1 for TKIP */
2527 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2528 return -EINVAL;
2529
2530 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
2531 skb_pull(skb, IEEE80211_TKIP_IV_LEN);
2532 skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN);
2533 return 0;
2534 }
2535
2536 static int ath10k_htt_rx_frag_ccmp_decap(struct sk_buff *skb,
2537 u16 head_len,
2538 u16 hdr_len)
2539 {
2540 u8 *ivp, *orig_hdr;
2541
2542 orig_hdr = skb->data;
2543 ivp = orig_hdr + hdr_len + head_len;
2544
2545 /* the ExtIV bit is always set to 1 for CCMP */
2546 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2547 return -EINVAL;
2548
2549 skb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN);
2550 memmove(orig_hdr + IEEE80211_CCMP_HDR_LEN, orig_hdr, head_len + hdr_len);
2551 skb_pull(skb, IEEE80211_CCMP_HDR_LEN);
2552 return 0;
2553 }
2554
2555 static int ath10k_htt_rx_frag_wep_decap(struct sk_buff *skb,
2556 u16 head_len,
2557 u16 hdr_len)
2558 {
2559 u8 *orig_hdr;
2560
2561 orig_hdr = skb->data;
2562
2563 memmove(orig_hdr + IEEE80211_WEP_IV_LEN,
2564 orig_hdr, head_len + hdr_len);
2565 skb_pull(skb, IEEE80211_WEP_IV_LEN);
2566 skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN);
2567 return 0;
2568 }
2569
2570 static bool ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt *htt,
2571 struct htt_rx_fragment_indication *rx,
2572 struct sk_buff *skb)
2573 {
2574 struct ath10k *ar = htt->ar;
2575 enum htt_rx_tkip_demic_type tkip_mic = HTT_RX_NON_TKIP_MIC;
2576 enum htt_txrx_sec_cast_type sec_index;
2577 struct htt_rx_indication_hl *rx_hl;
2578 enum htt_security_types sec_type;
2579 u32 tid, frag, seq, rx_desc_info;
2580 union htt_rx_pn_t new_pn = {0};
2581 struct htt_hl_rx_desc *rx_desc;
2582 u16 peer_id, sc, hdr_space;
2583 union htt_rx_pn_t *last_pn;
2584 struct ieee80211_hdr *hdr;
2585 int ret, num_mpdu_ranges;
2586 struct ath10k_peer *peer;
2587 struct htt_resp *resp;
2588 size_t tot_hdr_len;
2589
2590 resp = (struct htt_resp *)(skb->data + HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
2591 skb_pull(skb, HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
2592 skb_trim(skb, skb->len - FCS_LEN);
2593
2594 peer_id = __le16_to_cpu(rx->peer_id);
2595 rx_hl = (struct htt_rx_indication_hl *)(&resp->rx_ind_hl);
2596
2597 spin_lock_bh(&ar->data_lock);
2598 peer = ath10k_peer_find_by_id(ar, peer_id);
2599 if (!peer) {
2600 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer: %u\n", peer_id);
2601 goto err;
2602 }
2603
2604 num_mpdu_ranges = MS(__le32_to_cpu(rx_hl->hdr.info1),
2605 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2606
2607 tot_hdr_len = sizeof(struct htt_resp_hdr) +
2608 sizeof(rx_hl->hdr) +
2609 sizeof(rx_hl->ppdu) +
2610 sizeof(rx_hl->prefix) +
2611 sizeof(rx_hl->fw_desc) +
2612 sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges;
2613
2614 tid = MS(rx_hl->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2615 rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len);
2616 rx_desc_info = __le32_to_cpu(rx_desc->info);
2617
2618 hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len);
2619
2620 if (is_multicast_ether_addr(hdr->addr1)) {
2621 /* Discard the fragment with multicast DA */
2622 goto err;
2623 }
2624
2625 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) {
2626 spin_unlock_bh(&ar->data_lock);
2627 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
2628 HTT_RX_NON_PN_CHECK,
2629 HTT_RX_NON_TKIP_MIC);
2630 }
2631
2632 if (ieee80211_has_retry(hdr->frame_control))
2633 goto err;
2634
2635 hdr_space = ieee80211_hdrlen(hdr->frame_control);
2636 sc = __le16_to_cpu(hdr->seq_ctrl);
2637 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2638 frag = sc & IEEE80211_SCTL_FRAG;
2639
2640 sec_index = MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST) ?
2641 HTT_TXRX_SEC_MCAST : HTT_TXRX_SEC_UCAST;
2642 sec_type = peer->rx_pn[sec_index].sec_type;
2643 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2644
2645 switch (sec_type) {
2646 case HTT_SECURITY_TKIP:
2647 tkip_mic = HTT_RX_TKIP_MIC;
2648 ret = ath10k_htt_rx_frag_tkip_decap_withmic(skb,
2649 tot_hdr_len +
2650 rx_hl->fw_desc.len,
2651 hdr_space);
2652 if (ret)
2653 goto err;
2654 break;
2655 case HTT_SECURITY_TKIP_NOMIC:
2656 ret = ath10k_htt_rx_frag_tkip_decap_nomic(skb,
2657 tot_hdr_len +
2658 rx_hl->fw_desc.len,
2659 hdr_space);
2660 if (ret)
2661 goto err;
2662 break;
2663 case HTT_SECURITY_AES_CCMP:
2664 ret = ath10k_htt_rx_frag_ccmp_decap(skb,
2665 tot_hdr_len + rx_hl->fw_desc.len,
2666 hdr_space);
2667 if (ret)
2668 goto err;
2669 break;
2670 case HTT_SECURITY_WEP128:
2671 case HTT_SECURITY_WEP104:
2672 case HTT_SECURITY_WEP40:
2673 ret = ath10k_htt_rx_frag_wep_decap(skb,
2674 tot_hdr_len + rx_hl->fw_desc.len,
2675 hdr_space);
2676 if (ret)
2677 goto err;
2678 break;
2679 default:
2680 break;
2681 }
2682
2683 resp = (struct htt_resp *)(skb->data);
2684
2685 if (sec_type != HTT_SECURITY_AES_CCMP &&
2686 sec_type != HTT_SECURITY_TKIP &&
2687 sec_type != HTT_SECURITY_TKIP_NOMIC) {
2688 spin_unlock_bh(&ar->data_lock);
2689 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
2690 HTT_RX_NON_PN_CHECK,
2691 HTT_RX_NON_TKIP_MIC);
2692 }
2693
2694 last_pn = &peer->frag_tids_last_pn[tid];
2695
2696 if (frag == 0) {
2697 if (ath10k_htt_rx_pn_check_replay_hl(ar, peer, &resp->rx_ind_hl))
2698 goto err;
2699
2700 last_pn->pn48 = new_pn.pn48;
2701 peer->frag_tids_seq[tid] = seq;
2702 } else if (sec_type == HTT_SECURITY_AES_CCMP) {
2703 if (seq != peer->frag_tids_seq[tid])
2704 goto err;
2705
2706 if (new_pn.pn48 != last_pn->pn48 + 1)
2707 goto err;
2708
2709 last_pn->pn48 = new_pn.pn48;
2710 last_pn = &peer->tids_last_pn[tid];
2711 last_pn->pn48 = new_pn.pn48;
2712 }
2713
2714 spin_unlock_bh(&ar->data_lock);
2715
2716 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
2717 HTT_RX_NON_PN_CHECK, tkip_mic);
2718
2719 err:
2720 spin_unlock_bh(&ar->data_lock);
2721
2722 /* Tell the caller that it must free the skb since we have not
2723 * consumed it
2724 */
2725 return true;
2726 }
2727
2728 static void ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt *htt,
2729 struct htt_rx_indication *rx)
2730 {
2731 struct ath10k *ar = htt->ar;
2732 struct htt_rx_indication_mpdu_range *mpdu_ranges;
2733 int num_mpdu_ranges;
2734 int i, mpdu_count = 0;
2735 u16 peer_id;
2736 u8 tid;
2737
2738 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2739 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2740 peer_id = __le16_to_cpu(rx->hdr.peer_id);
2741 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2742
2743 mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx);
2744
2745 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ",
2746 rx, struct_size(rx, mpdu_ranges, num_mpdu_ranges));
2747
2748 for (i = 0; i < num_mpdu_ranges; i++)
2749 mpdu_count += mpdu_ranges[i].mpdu_count;
2750
2751 atomic_add(mpdu_count, &htt->num_mpdus_ready);
2752
2753 ath10k_sta_update_rx_tid_stats_ampdu(ar, peer_id, tid, mpdu_ranges,
2754 num_mpdu_ranges);
2755 }
2756
2757 static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar,
2758 struct sk_buff *skb)
2759 {
2760 struct ath10k_htt *htt = &ar->htt;
2761 struct htt_resp *resp = (struct htt_resp *)skb->data;
2762 struct htt_tx_done tx_done = {};
2763 int status = MS(resp->data_tx_completion.flags, HTT_DATA_TX_STATUS);
2764 __le16 msdu_id, *msdus;
2765 bool rssi_enabled = false;
2766 u8 msdu_count = 0, num_airtime_records, tid;
2767 int i, htt_pad = 0;
2768 struct htt_data_tx_compl_ppdu_dur *ppdu_info;
2769 struct ath10k_peer *peer;
2770 u16 ppdu_info_offset = 0, peer_id;
2771 u32 tx_duration;
2772
2773 switch (status) {
2774 case HTT_DATA_TX_STATUS_NO_ACK:
2775 tx_done.status = HTT_TX_COMPL_STATE_NOACK;
2776 break;
2777 case HTT_DATA_TX_STATUS_OK:
2778 tx_done.status = HTT_TX_COMPL_STATE_ACK;
2779 break;
2780 case HTT_DATA_TX_STATUS_DISCARD:
2781 case HTT_DATA_TX_STATUS_POSTPONE:
2782 case HTT_DATA_TX_STATUS_DOWNLOAD_FAIL:
2783 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
2784 break;
2785 default:
2786 ath10k_warn(ar, "unhandled tx completion status %d\n", status);
2787 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
2788 break;
2789 }
2790
2791 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx completion num_msdus %d\n",
2792 resp->data_tx_completion.num_msdus);
2793
2794 msdu_count = resp->data_tx_completion.num_msdus;
2795 msdus = resp->data_tx_completion.msdus;
2796 rssi_enabled = ath10k_is_rssi_enable(&ar->hw_params, resp);
2797
2798 if (rssi_enabled)
2799 htt_pad = ath10k_tx_data_rssi_get_pad_bytes(&ar->hw_params,
2800 resp);
2801
2802 for (i = 0; i < msdu_count; i++) {
2803 msdu_id = msdus[i];
2804 tx_done.msdu_id = __le16_to_cpu(msdu_id);
2805
2806 if (rssi_enabled) {
2807 /* Total no of MSDUs should be even,
2808 * if odd MSDUs are sent firmware fills
2809 * last msdu id with 0xffff
2810 */
2811 if (msdu_count & 0x01) {
2812 msdu_id = msdus[msdu_count + i + 1 + htt_pad];
2813 tx_done.ack_rssi = __le16_to_cpu(msdu_id);
2814 } else {
2815 msdu_id = msdus[msdu_count + i + htt_pad];
2816 tx_done.ack_rssi = __le16_to_cpu(msdu_id);
2817 }
2818 }
2819
2820 /* kfifo_put: In practice firmware shouldn't fire off per-CE
2821 * interrupt and main interrupt (MSI/-X range case) for the same
2822 * HTC service so it should be safe to use kfifo_put w/o lock.
2823 *
2824 * From kfifo_put() documentation:
2825 * Note that with only one concurrent reader and one concurrent
2826 * writer, you don't need extra locking to use these macro.
2827 */
2828 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) {
2829 ath10k_txrx_tx_unref(htt, &tx_done);
2830 } else if (!kfifo_put(&htt->txdone_fifo, tx_done)) {
2831 ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n",
2832 tx_done.msdu_id, tx_done.status);
2833 ath10k_txrx_tx_unref(htt, &tx_done);
2834 }
2835 }
2836
2837 if (!(resp->data_tx_completion.flags2 & HTT_TX_CMPL_FLAG_PPDU_DURATION_PRESENT))
2838 return;
2839
2840 ppdu_info_offset = (msdu_count & 0x01) ? msdu_count + 1 : msdu_count;
2841
2842 if (rssi_enabled)
2843 ppdu_info_offset += ppdu_info_offset;
2844
2845 if (resp->data_tx_completion.flags2 &
2846 (HTT_TX_CMPL_FLAG_PPID_PRESENT | HTT_TX_CMPL_FLAG_PA_PRESENT))
2847 ppdu_info_offset += 2;
2848
2849 ppdu_info = (struct htt_data_tx_compl_ppdu_dur *)&msdus[ppdu_info_offset];
2850 num_airtime_records = FIELD_GET(HTT_TX_COMPL_PPDU_DUR_INFO0_NUM_ENTRIES_MASK,
2851 __le32_to_cpu(ppdu_info->info0));
2852
2853 for (i = 0; i < num_airtime_records; i++) {
2854 struct htt_data_tx_ppdu_dur *ppdu_dur;
2855 u32 info0;
2856
2857 ppdu_dur = &ppdu_info->ppdu_dur[i];
2858 info0 = __le32_to_cpu(ppdu_dur->info0);
2859
2860 peer_id = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_PEER_ID_MASK,
2861 info0);
2862 rcu_read_lock();
2863 spin_lock_bh(&ar->data_lock);
2864
2865 peer = ath10k_peer_find_by_id(ar, peer_id);
2866 if (!peer || !peer->sta) {
2867 spin_unlock_bh(&ar->data_lock);
2868 rcu_read_unlock();
2869 continue;
2870 }
2871
2872 tid = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_TID_MASK, info0) &
2873 IEEE80211_QOS_CTL_TID_MASK;
2874 tx_duration = __le32_to_cpu(ppdu_dur->tx_duration);
2875
2876 ieee80211_sta_register_airtime(peer->sta, tid, tx_duration, 0);
2877
2878 spin_unlock_bh(&ar->data_lock);
2879 rcu_read_unlock();
2880 }
2881 }
2882
2883 static void ath10k_htt_rx_addba(struct ath10k *ar, struct htt_resp *resp)
2884 {
2885 struct htt_rx_addba *ev = &resp->rx_addba;
2886 struct ath10k_peer *peer;
2887 struct ath10k_vif *arvif;
2888 u16 info0, tid, peer_id;
2889
2890 info0 = __le16_to_cpu(ev->info0);
2891 tid = MS(info0, HTT_RX_BA_INFO0_TID);
2892 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID);
2893
2894 ath10k_dbg(ar, ATH10K_DBG_HTT,
2895 "htt rx addba tid %hu peer_id %hu size %hhu\n",
2896 tid, peer_id, ev->window_size);
2897
2898 spin_lock_bh(&ar->data_lock);
2899 peer = ath10k_peer_find_by_id(ar, peer_id);
2900 if (!peer) {
2901 ath10k_warn(ar, "received addba event for invalid peer_id: %hu\n",
2902 peer_id);
2903 spin_unlock_bh(&ar->data_lock);
2904 return;
2905 }
2906
2907 arvif = ath10k_get_arvif(ar, peer->vdev_id);
2908 if (!arvif) {
2909 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n",
2910 peer->vdev_id);
2911 spin_unlock_bh(&ar->data_lock);
2912 return;
2913 }
2914
2915 ath10k_dbg(ar, ATH10K_DBG_HTT,
2916 "htt rx start rx ba session sta %pM tid %hu size %hhu\n",
2917 peer->addr, tid, ev->window_size);
2918
2919 ieee80211_start_rx_ba_session_offl(arvif->vif, peer->addr, tid);
2920 spin_unlock_bh(&ar->data_lock);
2921 }
2922
2923 static void ath10k_htt_rx_delba(struct ath10k *ar, struct htt_resp *resp)
2924 {
2925 struct htt_rx_delba *ev = &resp->rx_delba;
2926 struct ath10k_peer *peer;
2927 struct ath10k_vif *arvif;
2928 u16 info0, tid, peer_id;
2929
2930 info0 = __le16_to_cpu(ev->info0);
2931 tid = MS(info0, HTT_RX_BA_INFO0_TID);
2932 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID);
2933
2934 ath10k_dbg(ar, ATH10K_DBG_HTT,
2935 "htt rx delba tid %hu peer_id %hu\n",
2936 tid, peer_id);
2937
2938 spin_lock_bh(&ar->data_lock);
2939 peer = ath10k_peer_find_by_id(ar, peer_id);
2940 if (!peer) {
2941 ath10k_warn(ar, "received addba event for invalid peer_id: %hu\n",
2942 peer_id);
2943 spin_unlock_bh(&ar->data_lock);
2944 return;
2945 }
2946
2947 arvif = ath10k_get_arvif(ar, peer->vdev_id);
2948 if (!arvif) {
2949 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n",
2950 peer->vdev_id);
2951 spin_unlock_bh(&ar->data_lock);
2952 return;
2953 }
2954
2955 ath10k_dbg(ar, ATH10K_DBG_HTT,
2956 "htt rx stop rx ba session sta %pM tid %hu\n",
2957 peer->addr, tid);
2958
2959 ieee80211_stop_rx_ba_session_offl(arvif->vif, peer->addr, tid);
2960 spin_unlock_bh(&ar->data_lock);
2961 }
2962
2963 static int ath10k_htt_rx_extract_amsdu(struct sk_buff_head *list,
2964 struct sk_buff_head *amsdu)
2965 {
2966 struct sk_buff *msdu;
2967 struct htt_rx_desc *rxd;
2968
2969 if (skb_queue_empty(list))
2970 return -ENOBUFS;
2971
2972 if (WARN_ON(!skb_queue_empty(amsdu)))
2973 return -EINVAL;
2974
2975 while ((msdu = __skb_dequeue(list))) {
2976 __skb_queue_tail(amsdu, msdu);
2977
2978 rxd = (void *)msdu->data - sizeof(*rxd);
2979 if (rxd->msdu_end.common.info0 &
2980 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))
2981 break;
2982 }
2983
2984 msdu = skb_peek_tail(amsdu);
2985 rxd = (void *)msdu->data - sizeof(*rxd);
2986 if (!(rxd->msdu_end.common.info0 &
2987 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))) {
2988 skb_queue_splice_init(amsdu, list);
2989 return -EAGAIN;
2990 }
2991
2992 return 0;
2993 }
2994
2995 static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status,
2996 struct sk_buff *skb)
2997 {
2998 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2999
3000 if (!ieee80211_has_protected(hdr->frame_control))
3001 return;
3002
3003 /* Offloaded frames are already decrypted but firmware insists they are
3004 * protected in the 802.11 header. Strip the flag. Otherwise mac80211
3005 * will drop the frame.
3006 */
3007
3008 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
3009 status->flag |= RX_FLAG_DECRYPTED |
3010 RX_FLAG_IV_STRIPPED |
3011 RX_FLAG_MMIC_STRIPPED;
3012 }
3013
3014 static void ath10k_htt_rx_h_rx_offload(struct ath10k *ar,
3015 struct sk_buff_head *list)
3016 {
3017 struct ath10k_htt *htt = &ar->htt;
3018 struct ieee80211_rx_status *status = &htt->rx_status;
3019 struct htt_rx_offload_msdu *rx;
3020 struct sk_buff *msdu;
3021 size_t offset;
3022
3023 while ((msdu = __skb_dequeue(list))) {
3024 /* Offloaded frames don't have Rx descriptor. Instead they have
3025 * a short meta information header.
3026 */
3027
3028 rx = (void *)msdu->data;
3029
3030 skb_put(msdu, sizeof(*rx));
3031 skb_pull(msdu, sizeof(*rx));
3032
3033 if (skb_tailroom(msdu) < __le16_to_cpu(rx->msdu_len)) {
3034 ath10k_warn(ar, "dropping frame: offloaded rx msdu is too long!\n");
3035 dev_kfree_skb_any(msdu);
3036 continue;
3037 }
3038
3039 skb_put(msdu, __le16_to_cpu(rx->msdu_len));
3040
3041 /* Offloaded rx header length isn't multiple of 2 nor 4 so the
3042 * actual payload is unaligned. Align the frame. Otherwise
3043 * mac80211 complains. This shouldn't reduce performance much
3044 * because these offloaded frames are rare.
3045 */
3046 offset = 4 - ((unsigned long)msdu->data & 3);
3047 skb_put(msdu, offset);
3048 memmove(msdu->data + offset, msdu->data, msdu->len);
3049 skb_pull(msdu, offset);
3050
3051 /* FIXME: The frame is NWifi. Re-construct QoS Control
3052 * if possible later.
3053 */
3054
3055 memset(status, 0, sizeof(*status));
3056 status->flag |= RX_FLAG_NO_SIGNAL_VAL;
3057
3058 ath10k_htt_rx_h_rx_offload_prot(status, msdu);
3059 ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id);
3060 ath10k_htt_rx_h_queue_msdu(ar, status, msdu);
3061 }
3062 }
3063
3064 static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb)
3065 {
3066 struct ath10k_htt *htt = &ar->htt;
3067 struct htt_resp *resp = (void *)skb->data;
3068 struct ieee80211_rx_status *status = &htt->rx_status;
3069 struct sk_buff_head list;
3070 struct sk_buff_head amsdu;
3071 u16 peer_id;
3072 u16 msdu_count;
3073 u8 vdev_id;
3074 u8 tid;
3075 bool offload;
3076 bool frag;
3077 int ret;
3078
3079 lockdep_assert_held(&htt->rx_ring.lock);
3080
3081 if (htt->rx_confused)
3082 return -EIO;
3083
3084 skb_pull(skb, sizeof(resp->hdr));
3085 skb_pull(skb, sizeof(resp->rx_in_ord_ind));
3086
3087 peer_id = __le16_to_cpu(resp->rx_in_ord_ind.peer_id);
3088 msdu_count = __le16_to_cpu(resp->rx_in_ord_ind.msdu_count);
3089 vdev_id = resp->rx_in_ord_ind.vdev_id;
3090 tid = SM(resp->rx_in_ord_ind.info, HTT_RX_IN_ORD_IND_INFO_TID);
3091 offload = !!(resp->rx_in_ord_ind.info &
3092 HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
3093 frag = !!(resp->rx_in_ord_ind.info & HTT_RX_IN_ORD_IND_INFO_FRAG_MASK);
3094
3095 ath10k_dbg(ar, ATH10K_DBG_HTT,
3096 "htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n",
3097 vdev_id, peer_id, tid, offload, frag, msdu_count);
3098
3099 if (skb->len < msdu_count * sizeof(*resp->rx_in_ord_ind.msdu_descs32)) {
3100 ath10k_warn(ar, "dropping invalid in order rx indication\n");
3101 return -EINVAL;
3102 }
3103
3104 /* The event can deliver more than 1 A-MSDU. Each A-MSDU is later
3105 * extracted and processed.
3106 */
3107 __skb_queue_head_init(&list);
3108 if (ar->hw_params.target_64bit)
3109 ret = ath10k_htt_rx_pop_paddr64_list(htt, &resp->rx_in_ord_ind,
3110 &list);
3111 else
3112 ret = ath10k_htt_rx_pop_paddr32_list(htt, &resp->rx_in_ord_ind,
3113 &list);
3114
3115 if (ret < 0) {
3116 ath10k_warn(ar, "failed to pop paddr list: %d\n", ret);
3117 htt->rx_confused = true;
3118 return -EIO;
3119 }
3120
3121 /* Offloaded frames are very different and need to be handled
3122 * separately.
3123 */
3124 if (offload)
3125 ath10k_htt_rx_h_rx_offload(ar, &list);
3126
3127 while (!skb_queue_empty(&list)) {
3128 __skb_queue_head_init(&amsdu);
3129 ret = ath10k_htt_rx_extract_amsdu(&list, &amsdu);
3130 switch (ret) {
3131 case 0:
3132 /* Note: The in-order indication may report interleaved
3133 * frames from different PPDUs meaning reported rx rate
3134 * to mac80211 isn't accurate/reliable. It's still
3135 * better to report something than nothing though. This
3136 * should still give an idea about rx rate to the user.
3137 */
3138 ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id);
3139 ath10k_htt_rx_h_filter(ar, &amsdu, status, NULL);
3140 ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false, NULL,
3141 NULL, peer_id, frag);
3142 ath10k_htt_rx_h_enqueue(ar, &amsdu, status);
3143 break;
3144 case -EAGAIN:
3145 fallthrough;
3146 default:
3147 /* Should not happen. */
3148 ath10k_warn(ar, "failed to extract amsdu: %d\n", ret);
3149 htt->rx_confused = true;
3150 __skb_queue_purge(&list);
3151 return -EIO;
3152 }
3153 }
3154 return ret;
3155 }
3156
3157 static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar,
3158 const __le32 *resp_ids,
3159 int num_resp_ids)
3160 {
3161 int i;
3162 u32 resp_id;
3163
3164 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm num_resp_ids %d\n",
3165 num_resp_ids);
3166
3167 for (i = 0; i < num_resp_ids; i++) {
3168 resp_id = le32_to_cpu(resp_ids[i]);
3169
3170 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm resp_id %u\n",
3171 resp_id);
3172
3173 /* TODO: free resp_id */
3174 }
3175 }
3176
3177 static void ath10k_htt_rx_tx_fetch_ind(struct ath10k *ar, struct sk_buff *skb)
3178 {
3179 struct ieee80211_hw *hw = ar->hw;
3180 struct ieee80211_txq *txq;
3181 struct htt_resp *resp = (struct htt_resp *)skb->data;
3182 struct htt_tx_fetch_record *record;
3183 size_t len;
3184 size_t max_num_bytes;
3185 size_t max_num_msdus;
3186 size_t num_bytes;
3187 size_t num_msdus;
3188 const __le32 *resp_ids;
3189 u16 num_records;
3190 u16 num_resp_ids;
3191 u16 peer_id;
3192 u8 tid;
3193 int ret;
3194 int i;
3195 bool may_tx;
3196
3197 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind\n");
3198
3199 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_ind);
3200 if (unlikely(skb->len < len)) {
3201 ath10k_warn(ar, "received corrupted tx_fetch_ind event: buffer too short\n");
3202 return;
3203 }
3204
3205 num_records = le16_to_cpu(resp->tx_fetch_ind.num_records);
3206 num_resp_ids = le16_to_cpu(resp->tx_fetch_ind.num_resp_ids);
3207
3208 len += sizeof(resp->tx_fetch_ind.records[0]) * num_records;
3209 len += sizeof(resp->tx_fetch_ind.resp_ids[0]) * num_resp_ids;
3210
3211 if (unlikely(skb->len < len)) {
3212 ath10k_warn(ar, "received corrupted tx_fetch_ind event: too many records/resp_ids\n");
3213 return;
3214 }
3215
3216 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind num records %hu num resps %hu seq %hu\n",
3217 num_records, num_resp_ids,
3218 le16_to_cpu(resp->tx_fetch_ind.fetch_seq_num));
3219
3220 if (!ar->htt.tx_q_state.enabled) {
3221 ath10k_warn(ar, "received unexpected tx_fetch_ind event: not enabled\n");
3222 return;
3223 }
3224
3225 if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH) {
3226 ath10k_warn(ar, "received unexpected tx_fetch_ind event: in push mode\n");
3227 return;
3228 }
3229
3230 rcu_read_lock();
3231
3232 for (i = 0; i < num_records; i++) {
3233 record = &resp->tx_fetch_ind.records[i];
3234 peer_id = MS(le16_to_cpu(record->info),
3235 HTT_TX_FETCH_RECORD_INFO_PEER_ID);
3236 tid = MS(le16_to_cpu(record->info),
3237 HTT_TX_FETCH_RECORD_INFO_TID);
3238 max_num_msdus = le16_to_cpu(record->num_msdus);
3239 max_num_bytes = le32_to_cpu(record->num_bytes);
3240
3241 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch record %i peer_id %hu tid %hhu msdus %zu bytes %zu\n",
3242 i, peer_id, tid, max_num_msdus, max_num_bytes);
3243
3244 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
3245 unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
3246 ath10k_warn(ar, "received out of range peer_id %hu tid %hhu\n",
3247 peer_id, tid);
3248 continue;
3249 }
3250
3251 spin_lock_bh(&ar->data_lock);
3252 txq = ath10k_mac_txq_lookup(ar, peer_id, tid);
3253 spin_unlock_bh(&ar->data_lock);
3254
3255 /* It is okay to release the lock and use txq because RCU read
3256 * lock is held.
3257 */
3258
3259 if (unlikely(!txq)) {
3260 ath10k_warn(ar, "failed to lookup txq for peer_id %hu tid %hhu\n",
3261 peer_id, tid);
3262 continue;
3263 }
3264
3265 num_msdus = 0;
3266 num_bytes = 0;
3267
3268 ieee80211_txq_schedule_start(hw, txq->ac);
3269 may_tx = ieee80211_txq_may_transmit(hw, txq);
3270 while (num_msdus < max_num_msdus &&
3271 num_bytes < max_num_bytes) {
3272 if (!may_tx)
3273 break;
3274
3275 ret = ath10k_mac_tx_push_txq(hw, txq);
3276 if (ret < 0)
3277 break;
3278
3279 num_msdus++;
3280 num_bytes += ret;
3281 }
3282 ieee80211_return_txq(hw, txq, false);
3283 ieee80211_txq_schedule_end(hw, txq->ac);
3284
3285 record->num_msdus = cpu_to_le16(num_msdus);
3286 record->num_bytes = cpu_to_le32(num_bytes);
3287
3288 ath10k_htt_tx_txq_recalc(hw, txq);
3289 }
3290
3291 rcu_read_unlock();
3292
3293 resp_ids = ath10k_htt_get_tx_fetch_ind_resp_ids(&resp->tx_fetch_ind);
3294 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, resp_ids, num_resp_ids);
3295
3296 ret = ath10k_htt_tx_fetch_resp(ar,
3297 resp->tx_fetch_ind.token,
3298 resp->tx_fetch_ind.fetch_seq_num,
3299 resp->tx_fetch_ind.records,
3300 num_records);
3301 if (unlikely(ret)) {
3302 ath10k_warn(ar, "failed to submit tx fetch resp for token 0x%08x: %d\n",
3303 le32_to_cpu(resp->tx_fetch_ind.token), ret);
3304 /* FIXME: request fw restart */
3305 }
3306
3307 ath10k_htt_tx_txq_sync(ar);
3308 }
3309
3310 static void ath10k_htt_rx_tx_fetch_confirm(struct ath10k *ar,
3311 struct sk_buff *skb)
3312 {
3313 const struct htt_resp *resp = (void *)skb->data;
3314 size_t len;
3315 int num_resp_ids;
3316
3317 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm\n");
3318
3319 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_confirm);
3320 if (unlikely(skb->len < len)) {
3321 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: buffer too short\n");
3322 return;
3323 }
3324
3325 num_resp_ids = le16_to_cpu(resp->tx_fetch_confirm.num_resp_ids);
3326 len += sizeof(resp->tx_fetch_confirm.resp_ids[0]) * num_resp_ids;
3327
3328 if (unlikely(skb->len < len)) {
3329 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: resp_ids buffer overflow\n");
3330 return;
3331 }
3332
3333 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar,
3334 resp->tx_fetch_confirm.resp_ids,
3335 num_resp_ids);
3336 }
3337
3338 static void ath10k_htt_rx_tx_mode_switch_ind(struct ath10k *ar,
3339 struct sk_buff *skb)
3340 {
3341 const struct htt_resp *resp = (void *)skb->data;
3342 const struct htt_tx_mode_switch_record *record;
3343 struct ieee80211_txq *txq;
3344 struct ath10k_txq *artxq;
3345 size_t len;
3346 size_t num_records;
3347 enum htt_tx_mode_switch_mode mode;
3348 bool enable;
3349 u16 info0;
3350 u16 info1;
3351 u16 threshold;
3352 u16 peer_id;
3353 u8 tid;
3354 int i;
3355
3356 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx mode switch ind\n");
3357
3358 len = sizeof(resp->hdr) + sizeof(resp->tx_mode_switch_ind);
3359 if (unlikely(skb->len < len)) {
3360 ath10k_warn(ar, "received corrupted tx_mode_switch_ind event: buffer too short\n");
3361 return;
3362 }
3363
3364 info0 = le16_to_cpu(resp->tx_mode_switch_ind.info0);
3365 info1 = le16_to_cpu(resp->tx_mode_switch_ind.info1);
3366
3367 enable = !!(info0 & HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE);
3368 num_records = MS(info0, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD);
3369 mode = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_MODE);
3370 threshold = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD);
3371
3372 ath10k_dbg(ar, ATH10K_DBG_HTT,
3373 "htt rx tx mode switch ind info0 0x%04hx info1 0x%04hx enable %d num records %zd mode %d threshold %hu\n",
3374 info0, info1, enable, num_records, mode, threshold);
3375
3376 len += sizeof(resp->tx_mode_switch_ind.records[0]) * num_records;
3377
3378 if (unlikely(skb->len < len)) {
3379 ath10k_warn(ar, "received corrupted tx_mode_switch_mode_ind event: too many records\n");
3380 return;
3381 }
3382
3383 switch (mode) {
3384 case HTT_TX_MODE_SWITCH_PUSH:
3385 case HTT_TX_MODE_SWITCH_PUSH_PULL:
3386 break;
3387 default:
3388 ath10k_warn(ar, "received invalid tx_mode_switch_mode_ind mode %d, ignoring\n",
3389 mode);
3390 return;
3391 }
3392
3393 if (!enable)
3394 return;
3395
3396 ar->htt.tx_q_state.enabled = enable;
3397 ar->htt.tx_q_state.mode = mode;
3398 ar->htt.tx_q_state.num_push_allowed = threshold;
3399
3400 rcu_read_lock();
3401
3402 for (i = 0; i < num_records; i++) {
3403 record = &resp->tx_mode_switch_ind.records[i];
3404 info0 = le16_to_cpu(record->info0);
3405 peer_id = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID);
3406 tid = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_TID);
3407
3408 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
3409 unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
3410 ath10k_warn(ar, "received out of range peer_id %hu tid %hhu\n",
3411 peer_id, tid);
3412 continue;
3413 }
3414
3415 spin_lock_bh(&ar->data_lock);
3416 txq = ath10k_mac_txq_lookup(ar, peer_id, tid);
3417 spin_unlock_bh(&ar->data_lock);
3418
3419 /* It is okay to release the lock and use txq because RCU read
3420 * lock is held.
3421 */
3422
3423 if (unlikely(!txq)) {
3424 ath10k_warn(ar, "failed to lookup txq for peer_id %hu tid %hhu\n",
3425 peer_id, tid);
3426 continue;
3427 }
3428
3429 spin_lock_bh(&ar->htt.tx_lock);
3430 artxq = (void *)txq->drv_priv;
3431 artxq->num_push_allowed = le16_to_cpu(record->num_max_msdus);
3432 spin_unlock_bh(&ar->htt.tx_lock);
3433 }
3434
3435 rcu_read_unlock();
3436
3437 ath10k_mac_tx_push_pending(ar);
3438 }
3439
3440 void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
3441 {
3442 bool release;
3443
3444 release = ath10k_htt_t2h_msg_handler(ar, skb);
3445
3446 /* Free the indication buffer */
3447 if (release)
3448 dev_kfree_skb_any(skb);
3449 }
3450
3451 static inline s8 ath10k_get_legacy_rate_idx(struct ath10k *ar, u8 rate)
3452 {
3453 static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12,
3454 18, 24, 36, 48, 54};
3455 int i;
3456
3457 for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) {
3458 if (rate == legacy_rates[i])
3459 return i;
3460 }
3461
3462 ath10k_warn(ar, "Invalid legacy rate %hhd peer stats", rate);
3463 return -EINVAL;
3464 }
3465
3466 static void
3467 ath10k_accumulate_per_peer_tx_stats(struct ath10k *ar,
3468 struct ath10k_sta *arsta,
3469 struct ath10k_per_peer_tx_stats *pstats,
3470 s8 legacy_rate_idx)
3471 {
3472 struct rate_info *txrate = &arsta->txrate;
3473 struct ath10k_htt_tx_stats *tx_stats;
3474 int idx, ht_idx, gi, mcs, bw, nss;
3475 unsigned long flags;
3476
3477 if (!arsta->tx_stats)
3478 return;
3479
3480 tx_stats = arsta->tx_stats;
3481 flags = txrate->flags;
3482 gi = test_bit(ATH10K_RATE_INFO_FLAGS_SGI_BIT, &flags);
3483 mcs = ATH10K_HW_MCS_RATE(pstats->ratecode);
3484 bw = txrate->bw;
3485 nss = txrate->nss;
3486 ht_idx = mcs + (nss - 1) * 8;
3487 idx = mcs * 8 + 8 * 10 * (nss - 1);
3488 idx += bw * 2 + gi;
3489
3490 #define STATS_OP_FMT(name) tx_stats->stats[ATH10K_STATS_TYPE_##name]
3491
3492 if (txrate->flags & RATE_INFO_FLAGS_VHT_MCS) {
3493 STATS_OP_FMT(SUCC).vht[0][mcs] += pstats->succ_bytes;
3494 STATS_OP_FMT(SUCC).vht[1][mcs] += pstats->succ_pkts;
3495 STATS_OP_FMT(FAIL).vht[0][mcs] += pstats->failed_bytes;
3496 STATS_OP_FMT(FAIL).vht[1][mcs] += pstats->failed_pkts;
3497 STATS_OP_FMT(RETRY).vht[0][mcs] += pstats->retry_bytes;
3498 STATS_OP_FMT(RETRY).vht[1][mcs] += pstats->retry_pkts;
3499 } else if (txrate->flags & RATE_INFO_FLAGS_MCS) {
3500 STATS_OP_FMT(SUCC).ht[0][ht_idx] += pstats->succ_bytes;
3501 STATS_OP_FMT(SUCC).ht[1][ht_idx] += pstats->succ_pkts;
3502 STATS_OP_FMT(FAIL).ht[0][ht_idx] += pstats->failed_bytes;
3503 STATS_OP_FMT(FAIL).ht[1][ht_idx] += pstats->failed_pkts;
3504 STATS_OP_FMT(RETRY).ht[0][ht_idx] += pstats->retry_bytes;
3505 STATS_OP_FMT(RETRY).ht[1][ht_idx] += pstats->retry_pkts;
3506 } else {
3507 mcs = legacy_rate_idx;
3508
3509 STATS_OP_FMT(SUCC).legacy[0][mcs] += pstats->succ_bytes;
3510 STATS_OP_FMT(SUCC).legacy[1][mcs] += pstats->succ_pkts;
3511 STATS_OP_FMT(FAIL).legacy[0][mcs] += pstats->failed_bytes;
3512 STATS_OP_FMT(FAIL).legacy[1][mcs] += pstats->failed_pkts;
3513 STATS_OP_FMT(RETRY).legacy[0][mcs] += pstats->retry_bytes;
3514 STATS_OP_FMT(RETRY).legacy[1][mcs] += pstats->retry_pkts;
3515 }
3516
3517 if (ATH10K_HW_AMPDU(pstats->flags)) {
3518 tx_stats->ba_fails += ATH10K_HW_BA_FAIL(pstats->flags);
3519
3520 if (txrate->flags & RATE_INFO_FLAGS_MCS) {
3521 STATS_OP_FMT(AMPDU).ht[0][ht_idx] +=
3522 pstats->succ_bytes + pstats->retry_bytes;
3523 STATS_OP_FMT(AMPDU).ht[1][ht_idx] +=
3524 pstats->succ_pkts + pstats->retry_pkts;
3525 } else {
3526 STATS_OP_FMT(AMPDU).vht[0][mcs] +=
3527 pstats->succ_bytes + pstats->retry_bytes;
3528 STATS_OP_FMT(AMPDU).vht[1][mcs] +=
3529 pstats->succ_pkts + pstats->retry_pkts;
3530 }
3531 STATS_OP_FMT(AMPDU).bw[0][bw] +=
3532 pstats->succ_bytes + pstats->retry_bytes;
3533 STATS_OP_FMT(AMPDU).nss[0][nss - 1] +=
3534 pstats->succ_bytes + pstats->retry_bytes;
3535 STATS_OP_FMT(AMPDU).gi[0][gi] +=
3536 pstats->succ_bytes + pstats->retry_bytes;
3537 STATS_OP_FMT(AMPDU).rate_table[0][idx] +=
3538 pstats->succ_bytes + pstats->retry_bytes;
3539 STATS_OP_FMT(AMPDU).bw[1][bw] +=
3540 pstats->succ_pkts + pstats->retry_pkts;
3541 STATS_OP_FMT(AMPDU).nss[1][nss - 1] +=
3542 pstats->succ_pkts + pstats->retry_pkts;
3543 STATS_OP_FMT(AMPDU).gi[1][gi] +=
3544 pstats->succ_pkts + pstats->retry_pkts;
3545 STATS_OP_FMT(AMPDU).rate_table[1][idx] +=
3546 pstats->succ_pkts + pstats->retry_pkts;
3547 } else {
3548 tx_stats->ack_fails +=
3549 ATH10K_HW_BA_FAIL(pstats->flags);
3550 }
3551
3552 STATS_OP_FMT(SUCC).bw[0][bw] += pstats->succ_bytes;
3553 STATS_OP_FMT(SUCC).nss[0][nss - 1] += pstats->succ_bytes;
3554 STATS_OP_FMT(SUCC).gi[0][gi] += pstats->succ_bytes;
3555
3556 STATS_OP_FMT(SUCC).bw[1][bw] += pstats->succ_pkts;
3557 STATS_OP_FMT(SUCC).nss[1][nss - 1] += pstats->succ_pkts;
3558 STATS_OP_FMT(SUCC).gi[1][gi] += pstats->succ_pkts;
3559
3560 STATS_OP_FMT(FAIL).bw[0][bw] += pstats->failed_bytes;
3561 STATS_OP_FMT(FAIL).nss[0][nss - 1] += pstats->failed_bytes;
3562 STATS_OP_FMT(FAIL).gi[0][gi] += pstats->failed_bytes;
3563
3564 STATS_OP_FMT(FAIL).bw[1][bw] += pstats->failed_pkts;
3565 STATS_OP_FMT(FAIL).nss[1][nss - 1] += pstats->failed_pkts;
3566 STATS_OP_FMT(FAIL).gi[1][gi] += pstats->failed_pkts;
3567
3568 STATS_OP_FMT(RETRY).bw[0][bw] += pstats->retry_bytes;
3569 STATS_OP_FMT(RETRY).nss[0][nss - 1] += pstats->retry_bytes;
3570 STATS_OP_FMT(RETRY).gi[0][gi] += pstats->retry_bytes;
3571
3572 STATS_OP_FMT(RETRY).bw[1][bw] += pstats->retry_pkts;
3573 STATS_OP_FMT(RETRY).nss[1][nss - 1] += pstats->retry_pkts;
3574 STATS_OP_FMT(RETRY).gi[1][gi] += pstats->retry_pkts;
3575
3576 if (txrate->flags >= RATE_INFO_FLAGS_MCS) {
3577 STATS_OP_FMT(SUCC).rate_table[0][idx] += pstats->succ_bytes;
3578 STATS_OP_FMT(SUCC).rate_table[1][idx] += pstats->succ_pkts;
3579 STATS_OP_FMT(FAIL).rate_table[0][idx] += pstats->failed_bytes;
3580 STATS_OP_FMT(FAIL).rate_table[1][idx] += pstats->failed_pkts;
3581 STATS_OP_FMT(RETRY).rate_table[0][idx] += pstats->retry_bytes;
3582 STATS_OP_FMT(RETRY).rate_table[1][idx] += pstats->retry_pkts;
3583 }
3584
3585 tx_stats->tx_duration += pstats->duration;
3586 }
3587
3588 static void
3589 ath10k_update_per_peer_tx_stats(struct ath10k *ar,
3590 struct ieee80211_sta *sta,
3591 struct ath10k_per_peer_tx_stats *peer_stats)
3592 {
3593 struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
3594 struct ieee80211_chanctx_conf *conf = NULL;
3595 u8 rate = 0, sgi;
3596 s8 rate_idx = 0;
3597 bool skip_auto_rate;
3598 struct rate_info txrate;
3599
3600 lockdep_assert_held(&ar->data_lock);
3601
3602 txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode);
3603 txrate.bw = ATH10K_HW_BW(peer_stats->flags);
3604 txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode);
3605 txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode);
3606 sgi = ATH10K_HW_GI(peer_stats->flags);
3607 skip_auto_rate = ATH10K_FW_SKIPPED_RATE_CTRL(peer_stats->flags);
3608
3609 /* Firmware's rate control skips broadcast/management frames,
3610 * if host has configure fixed rates and in some other special cases.
3611 */
3612 if (skip_auto_rate)
3613 return;
3614
3615 if (txrate.flags == WMI_RATE_PREAMBLE_VHT && txrate.mcs > 9) {
3616 ath10k_warn(ar, "Invalid VHT mcs %hhd peer stats", txrate.mcs);
3617 return;
3618 }
3619
3620 if (txrate.flags == WMI_RATE_PREAMBLE_HT &&
3621 (txrate.mcs > 7 || txrate.nss < 1)) {
3622 ath10k_warn(ar, "Invalid HT mcs %hhd nss %hhd peer stats",
3623 txrate.mcs, txrate.nss);
3624 return;
3625 }
3626
3627 memset(&arsta->txrate, 0, sizeof(arsta->txrate));
3628 memset(&arsta->tx_info.status, 0, sizeof(arsta->tx_info.status));
3629 if (txrate.flags == WMI_RATE_PREAMBLE_CCK ||
3630 txrate.flags == WMI_RATE_PREAMBLE_OFDM) {
3631 rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode);
3632 /* This is hacky, FW sends CCK rate 5.5Mbps as 6 */
3633 if (rate == 6 && txrate.flags == WMI_RATE_PREAMBLE_CCK)
3634 rate = 5;
3635 rate_idx = ath10k_get_legacy_rate_idx(ar, rate);
3636 if (rate_idx < 0)
3637 return;
3638 arsta->txrate.legacy = rate;
3639 } else if (txrate.flags == WMI_RATE_PREAMBLE_HT) {
3640 arsta->txrate.flags = RATE_INFO_FLAGS_MCS;
3641 arsta->txrate.mcs = txrate.mcs + 8 * (txrate.nss - 1);
3642 } else {
3643 arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS;
3644 arsta->txrate.mcs = txrate.mcs;
3645 }
3646
3647 switch (txrate.flags) {
3648 case WMI_RATE_PREAMBLE_OFDM:
3649 if (arsta->arvif && arsta->arvif->vif)
3650 conf = rcu_dereference(arsta->arvif->vif->chanctx_conf);
3651 if (conf && conf->def.chan->band == NL80211_BAND_5GHZ)
3652 arsta->tx_info.status.rates[0].idx = rate_idx - 4;
3653 break;
3654 case WMI_RATE_PREAMBLE_CCK:
3655 arsta->tx_info.status.rates[0].idx = rate_idx;
3656 if (sgi)
3657 arsta->tx_info.status.rates[0].flags |=
3658 (IEEE80211_TX_RC_USE_SHORT_PREAMBLE |
3659 IEEE80211_TX_RC_SHORT_GI);
3660 break;
3661 case WMI_RATE_PREAMBLE_HT:
3662 arsta->tx_info.status.rates[0].idx =
3663 txrate.mcs + ((txrate.nss - 1) * 8);
3664 if (sgi)
3665 arsta->tx_info.status.rates[0].flags |=
3666 IEEE80211_TX_RC_SHORT_GI;
3667 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_MCS;
3668 break;
3669 case WMI_RATE_PREAMBLE_VHT:
3670 ieee80211_rate_set_vht(&arsta->tx_info.status.rates[0],
3671 txrate.mcs, txrate.nss);
3672 if (sgi)
3673 arsta->tx_info.status.rates[0].flags |=
3674 IEEE80211_TX_RC_SHORT_GI;
3675 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_VHT_MCS;
3676 break;
3677 }
3678
3679 arsta->txrate.nss = txrate.nss;
3680 arsta->txrate.bw = ath10k_bw_to_mac80211_bw(txrate.bw);
3681 arsta->last_tx_bitrate = cfg80211_calculate_bitrate(&arsta->txrate);
3682 if (sgi)
3683 arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
3684
3685 switch (arsta->txrate.bw) {
3686 case RATE_INFO_BW_40:
3687 arsta->tx_info.status.rates[0].flags |=
3688 IEEE80211_TX_RC_40_MHZ_WIDTH;
3689 break;
3690 case RATE_INFO_BW_80:
3691 arsta->tx_info.status.rates[0].flags |=
3692 IEEE80211_TX_RC_80_MHZ_WIDTH;
3693 break;
3694 }
3695
3696 if (peer_stats->succ_pkts) {
3697 arsta->tx_info.flags = IEEE80211_TX_STAT_ACK;
3698 arsta->tx_info.status.rates[0].count = 1;
3699 ieee80211_tx_rate_update(ar->hw, sta, &arsta->tx_info);
3700 }
3701
3702 if (ar->htt.disable_tx_comp) {
3703 arsta->tx_failed += peer_stats->failed_pkts;
3704 ath10k_dbg(ar, ATH10K_DBG_HTT, "tx failed %d\n",
3705 arsta->tx_failed);
3706 }
3707
3708 arsta->tx_retries += peer_stats->retry_pkts;
3709 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx retries %d", arsta->tx_retries);
3710
3711 if (ath10k_debug_is_extd_tx_stats_enabled(ar))
3712 ath10k_accumulate_per_peer_tx_stats(ar, arsta, peer_stats,
3713 rate_idx);
3714 }
3715
3716 static void ath10k_htt_fetch_peer_stats(struct ath10k *ar,
3717 struct sk_buff *skb)
3718 {
3719 struct htt_resp *resp = (struct htt_resp *)skb->data;
3720 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats;
3721 struct htt_per_peer_tx_stats_ind *tx_stats;
3722 struct ieee80211_sta *sta;
3723 struct ath10k_peer *peer;
3724 int peer_id, i;
3725 u8 ppdu_len, num_ppdu;
3726
3727 num_ppdu = resp->peer_tx_stats.num_ppdu;
3728 ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32);
3729
3730 if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) {
3731 ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len);
3732 return;
3733 }
3734
3735 tx_stats = (struct htt_per_peer_tx_stats_ind *)
3736 (resp->peer_tx_stats.payload);
3737 peer_id = __le16_to_cpu(tx_stats->peer_id);
3738
3739 rcu_read_lock();
3740 spin_lock_bh(&ar->data_lock);
3741 peer = ath10k_peer_find_by_id(ar, peer_id);
3742 if (!peer || !peer->sta) {
3743 ath10k_warn(ar, "Invalid peer id %d peer stats buffer\n",
3744 peer_id);
3745 goto out;
3746 }
3747
3748 sta = peer->sta;
3749 for (i = 0; i < num_ppdu; i++) {
3750 tx_stats = (struct htt_per_peer_tx_stats_ind *)
3751 (resp->peer_tx_stats.payload + i * ppdu_len);
3752
3753 p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes);
3754 p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes);
3755 p_tx_stats->failed_bytes =
3756 __le32_to_cpu(tx_stats->failed_bytes);
3757 p_tx_stats->ratecode = tx_stats->ratecode;
3758 p_tx_stats->flags = tx_stats->flags;
3759 p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts);
3760 p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts);
3761 p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts);
3762 p_tx_stats->duration = __le16_to_cpu(tx_stats->tx_duration);
3763
3764 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats);
3765 }
3766
3767 out:
3768 spin_unlock_bh(&ar->data_lock);
3769 rcu_read_unlock();
3770 }
3771
3772 static void ath10k_fetch_10_2_tx_stats(struct ath10k *ar, u8 *data)
3773 {
3774 struct ath10k_pktlog_hdr *hdr = (struct ath10k_pktlog_hdr *)data;
3775 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats;
3776 struct ath10k_10_2_peer_tx_stats *tx_stats;
3777 struct ieee80211_sta *sta;
3778 struct ath10k_peer *peer;
3779 u16 log_type = __le16_to_cpu(hdr->log_type);
3780 u32 peer_id = 0, i;
3781
3782 if (log_type != ATH_PKTLOG_TYPE_TX_STAT)
3783 return;
3784
3785 tx_stats = (struct ath10k_10_2_peer_tx_stats *)((hdr->payload) +
3786 ATH10K_10_2_TX_STATS_OFFSET);
3787
3788 if (!tx_stats->tx_ppdu_cnt)
3789 return;
3790
3791 peer_id = tx_stats->peer_id;
3792
3793 rcu_read_lock();
3794 spin_lock_bh(&ar->data_lock);
3795 peer = ath10k_peer_find_by_id(ar, peer_id);
3796 if (!peer || !peer->sta) {
3797 ath10k_warn(ar, "Invalid peer id %d in peer stats buffer\n",
3798 peer_id);
3799 goto out;
3800 }
3801
3802 sta = peer->sta;
3803 for (i = 0; i < tx_stats->tx_ppdu_cnt; i++) {
3804 p_tx_stats->succ_bytes =
3805 __le16_to_cpu(tx_stats->success_bytes[i]);
3806 p_tx_stats->retry_bytes =
3807 __le16_to_cpu(tx_stats->retry_bytes[i]);
3808 p_tx_stats->failed_bytes =
3809 __le16_to_cpu(tx_stats->failed_bytes[i]);
3810 p_tx_stats->ratecode = tx_stats->ratecode[i];
3811 p_tx_stats->flags = tx_stats->flags[i];
3812 p_tx_stats->succ_pkts = tx_stats->success_pkts[i];
3813 p_tx_stats->retry_pkts = tx_stats->retry_pkts[i];
3814 p_tx_stats->failed_pkts = tx_stats->failed_pkts[i];
3815
3816 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats);
3817 }
3818 spin_unlock_bh(&ar->data_lock);
3819 rcu_read_unlock();
3820
3821 return;
3822
3823 out:
3824 spin_unlock_bh(&ar->data_lock);
3825 rcu_read_unlock();
3826 }
3827
3828 static int ath10k_htt_rx_pn_len(enum htt_security_types sec_type)
3829 {
3830 switch (sec_type) {
3831 case HTT_SECURITY_TKIP:
3832 case HTT_SECURITY_TKIP_NOMIC:
3833 case HTT_SECURITY_AES_CCMP:
3834 return 48;
3835 default:
3836 return 0;
3837 }
3838 }
3839
3840 static void ath10k_htt_rx_sec_ind_handler(struct ath10k *ar,
3841 struct htt_security_indication *ev)
3842 {
3843 enum htt_txrx_sec_cast_type sec_index;
3844 enum htt_security_types sec_type;
3845 struct ath10k_peer *peer;
3846
3847 spin_lock_bh(&ar->data_lock);
3848
3849 peer = ath10k_peer_find_by_id(ar, __le16_to_cpu(ev->peer_id));
3850 if (!peer) {
3851 ath10k_warn(ar, "failed to find peer id %d for security indication",
3852 __le16_to_cpu(ev->peer_id));
3853 goto out;
3854 }
3855
3856 sec_type = MS(ev->flags, HTT_SECURITY_TYPE);
3857
3858 if (ev->flags & HTT_SECURITY_IS_UNICAST)
3859 sec_index = HTT_TXRX_SEC_UCAST;
3860 else
3861 sec_index = HTT_TXRX_SEC_MCAST;
3862
3863 peer->rx_pn[sec_index].sec_type = sec_type;
3864 peer->rx_pn[sec_index].pn_len = ath10k_htt_rx_pn_len(sec_type);
3865
3866 memset(peer->tids_last_pn_valid, 0, sizeof(peer->tids_last_pn_valid));
3867 memset(peer->tids_last_pn, 0, sizeof(peer->tids_last_pn));
3868
3869 out:
3870 spin_unlock_bh(&ar->data_lock);
3871 }
3872
3873 bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
3874 {
3875 struct ath10k_htt *htt = &ar->htt;
3876 struct htt_resp *resp = (struct htt_resp *)skb->data;
3877 enum htt_t2h_msg_type type;
3878
3879 /* confirm alignment */
3880 if (!IS_ALIGNED((unsigned long)skb->data, 4))
3881 ath10k_warn(ar, "unaligned htt message, expect trouble\n");
3882
3883 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, msg_type: 0x%0X\n",
3884 resp->hdr.msg_type);
3885
3886 if (resp->hdr.msg_type >= ar->htt.t2h_msg_types_max) {
3887 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X",
3888 resp->hdr.msg_type, ar->htt.t2h_msg_types_max);
3889 return true;
3890 }
3891 type = ar->htt.t2h_msg_types[resp->hdr.msg_type];
3892
3893 switch (type) {
3894 case HTT_T2H_MSG_TYPE_VERSION_CONF: {
3895 htt->target_version_major = resp->ver_resp.major;
3896 htt->target_version_minor = resp->ver_resp.minor;
3897 complete(&htt->target_version_received);
3898 break;
3899 }
3900 case HTT_T2H_MSG_TYPE_RX_IND:
3901 if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) {
3902 ath10k_htt_rx_proc_rx_ind_ll(htt, &resp->rx_ind);
3903 } else {
3904 skb_queue_tail(&htt->rx_indication_head, skb);
3905 return false;
3906 }
3907 break;
3908 case HTT_T2H_MSG_TYPE_PEER_MAP: {
3909 struct htt_peer_map_event ev = {
3910 .vdev_id = resp->peer_map.vdev_id,
3911 .peer_id = __le16_to_cpu(resp->peer_map.peer_id),
3912 };
3913 memcpy(ev.addr, resp->peer_map.addr, sizeof(ev.addr));
3914 ath10k_peer_map_event(htt, &ev);
3915 break;
3916 }
3917 case HTT_T2H_MSG_TYPE_PEER_UNMAP: {
3918 struct htt_peer_unmap_event ev = {
3919 .peer_id = __le16_to_cpu(resp->peer_unmap.peer_id),
3920 };
3921 ath10k_peer_unmap_event(htt, &ev);
3922 break;
3923 }
3924 case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION: {
3925 struct htt_tx_done tx_done = {};
3926 struct ath10k_htt *htt = &ar->htt;
3927 struct ath10k_htc *htc = &ar->htc;
3928 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid];
3929 int status = __le32_to_cpu(resp->mgmt_tx_completion.status);
3930 int info = __le32_to_cpu(resp->mgmt_tx_completion.info);
3931
3932 tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id);
3933
3934 switch (status) {
3935 case HTT_MGMT_TX_STATUS_OK:
3936 tx_done.status = HTT_TX_COMPL_STATE_ACK;
3937 if (test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS,
3938 ar->wmi.svc_map) &&
3939 (resp->mgmt_tx_completion.flags &
3940 HTT_MGMT_TX_CMPL_FLAG_ACK_RSSI)) {
3941 tx_done.ack_rssi =
3942 FIELD_GET(HTT_MGMT_TX_CMPL_INFO_ACK_RSSI_MASK,
3943 info);
3944 }
3945 break;
3946 case HTT_MGMT_TX_STATUS_RETRY:
3947 tx_done.status = HTT_TX_COMPL_STATE_NOACK;
3948 break;
3949 case HTT_MGMT_TX_STATUS_DROP:
3950 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
3951 break;
3952 }
3953
3954 if (htt->disable_tx_comp) {
3955 spin_lock_bh(&htc->tx_lock);
3956 ep->tx_credits++;
3957 spin_unlock_bh(&htc->tx_lock);
3958 }
3959
3960 status = ath10k_txrx_tx_unref(htt, &tx_done);
3961 if (!status) {
3962 spin_lock_bh(&htt->tx_lock);
3963 ath10k_htt_tx_mgmt_dec_pending(htt);
3964 spin_unlock_bh(&htt->tx_lock);
3965 }
3966 break;
3967 }
3968 case HTT_T2H_MSG_TYPE_TX_COMPL_IND:
3969 ath10k_htt_rx_tx_compl_ind(htt->ar, skb);
3970 break;
3971 case HTT_T2H_MSG_TYPE_SEC_IND: {
3972 struct ath10k *ar = htt->ar;
3973 struct htt_security_indication *ev = &resp->security_indication;
3974
3975 ath10k_htt_rx_sec_ind_handler(ar, ev);
3976 ath10k_dbg(ar, ATH10K_DBG_HTT,
3977 "sec ind peer_id %d unicast %d type %d\n",
3978 __le16_to_cpu(ev->peer_id),
3979 !!(ev->flags & HTT_SECURITY_IS_UNICAST),
3980 MS(ev->flags, HTT_SECURITY_TYPE));
3981 complete(&ar->install_key_done);
3982 break;
3983 }
3984 case HTT_T2H_MSG_TYPE_RX_FRAG_IND: {
3985 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
3986 skb->data, skb->len);
3987 atomic_inc(&htt->num_mpdus_ready);
3988
3989 return ath10k_htt_rx_proc_rx_frag_ind(htt,
3990 &resp->rx_frag_ind,
3991 skb);
3992 }
3993 case HTT_T2H_MSG_TYPE_TEST:
3994 break;
3995 case HTT_T2H_MSG_TYPE_STATS_CONF:
3996 trace_ath10k_htt_stats(ar, skb->data, skb->len);
3997 break;
3998 case HTT_T2H_MSG_TYPE_TX_INSPECT_IND:
3999 /* Firmware can return tx frames if it's unable to fully
4000 * process them and suspects host may be able to fix it. ath10k
4001 * sends all tx frames as already inspected so this shouldn't
4002 * happen unless fw has a bug.
4003 */
4004 ath10k_warn(ar, "received an unexpected htt tx inspect event\n");
4005 break;
4006 case HTT_T2H_MSG_TYPE_RX_ADDBA:
4007 ath10k_htt_rx_addba(ar, resp);
4008 break;
4009 case HTT_T2H_MSG_TYPE_RX_DELBA:
4010 ath10k_htt_rx_delba(ar, resp);
4011 break;
4012 case HTT_T2H_MSG_TYPE_PKTLOG: {
4013 trace_ath10k_htt_pktlog(ar, resp->pktlog_msg.payload,
4014 skb->len -
4015 offsetof(struct htt_resp,
4016 pktlog_msg.payload));
4017
4018 if (ath10k_peer_stats_enabled(ar))
4019 ath10k_fetch_10_2_tx_stats(ar,
4020 resp->pktlog_msg.payload);
4021 break;
4022 }
4023 case HTT_T2H_MSG_TYPE_RX_FLUSH: {
4024 /* Ignore this event because mac80211 takes care of Rx
4025 * aggregation reordering.
4026 */
4027 break;
4028 }
4029 case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: {
4030 skb_queue_tail(&htt->rx_in_ord_compl_q, skb);
4031 return false;
4032 }
4033 case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: {
4034 struct ath10k_htt *htt = &ar->htt;
4035 struct ath10k_htc *htc = &ar->htc;
4036 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid];
4037 u32 msg_word = __le32_to_cpu(*(__le32 *)resp);
4038 int htt_credit_delta;
4039
4040 htt_credit_delta = HTT_TX_CREDIT_DELTA_ABS_GET(msg_word);
4041 if (HTT_TX_CREDIT_SIGN_BIT_GET(msg_word))
4042 htt_credit_delta = -htt_credit_delta;
4043
4044 ath10k_dbg(ar, ATH10K_DBG_HTT,
4045 "htt credit update delta %d\n",
4046 htt_credit_delta);
4047
4048 if (htt->disable_tx_comp) {
4049 spin_lock_bh(&htc->tx_lock);
4050 ep->tx_credits += htt_credit_delta;
4051 spin_unlock_bh(&htc->tx_lock);
4052 ath10k_dbg(ar, ATH10K_DBG_HTT,
4053 "htt credit total %d\n",
4054 ep->tx_credits);
4055 ep->ep_ops.ep_tx_credits(htc->ar);
4056 }
4057 break;
4058 }
4059 case HTT_T2H_MSG_TYPE_CHAN_CHANGE: {
4060 u32 phymode = __le32_to_cpu(resp->chan_change.phymode);
4061 u32 freq = __le32_to_cpu(resp->chan_change.freq);
4062
4063 ar->tgt_oper_chan = ieee80211_get_channel(ar->hw->wiphy, freq);
4064 ath10k_dbg(ar, ATH10K_DBG_HTT,
4065 "htt chan change freq %u phymode %s\n",
4066 freq, ath10k_wmi_phymode_str(phymode));
4067 break;
4068 }
4069 case HTT_T2H_MSG_TYPE_AGGR_CONF:
4070 break;
4071 case HTT_T2H_MSG_TYPE_TX_FETCH_IND: {
4072 struct sk_buff *tx_fetch_ind = skb_copy(skb, GFP_ATOMIC);
4073
4074 if (!tx_fetch_ind) {
4075 ath10k_warn(ar, "failed to copy htt tx fetch ind\n");
4076 break;
4077 }
4078 skb_queue_tail(&htt->tx_fetch_ind_q, tx_fetch_ind);
4079 break;
4080 }
4081 case HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM:
4082 ath10k_htt_rx_tx_fetch_confirm(ar, skb);
4083 break;
4084 case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND:
4085 ath10k_htt_rx_tx_mode_switch_ind(ar, skb);
4086 break;
4087 case HTT_T2H_MSG_TYPE_PEER_STATS:
4088 ath10k_htt_fetch_peer_stats(ar, skb);
4089 break;
4090 case HTT_T2H_MSG_TYPE_EN_STATS:
4091 default:
4092 ath10k_warn(ar, "htt event (%d) not handled\n",
4093 resp->hdr.msg_type);
4094 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
4095 skb->data, skb->len);
4096 break;
4097 }
4098 return true;
4099 }
4100 EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler);
4101
4102 void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar,
4103 struct sk_buff *skb)
4104 {
4105 trace_ath10k_htt_pktlog(ar, skb->data, skb->len);
4106 dev_kfree_skb_any(skb);
4107 }
4108 EXPORT_SYMBOL(ath10k_htt_rx_pktlog_completion_handler);
4109
4110 static int ath10k_htt_rx_deliver_msdu(struct ath10k *ar, int quota, int budget)
4111 {
4112 struct sk_buff *skb;
4113
4114 while (quota < budget) {
4115 if (skb_queue_empty(&ar->htt.rx_msdus_q))
4116 break;
4117
4118 skb = skb_dequeue(&ar->htt.rx_msdus_q);
4119 if (!skb)
4120 break;
4121 ath10k_process_rx(ar, skb);
4122 quota++;
4123 }
4124
4125 return quota;
4126 }
4127
4128 int ath10k_htt_rx_hl_indication(struct ath10k *ar, int budget)
4129 {
4130 struct htt_resp *resp;
4131 struct ath10k_htt *htt = &ar->htt;
4132 struct sk_buff *skb;
4133 bool release;
4134 int quota;
4135
4136 for (quota = 0; quota < budget; quota++) {
4137 skb = skb_dequeue(&htt->rx_indication_head);
4138 if (!skb)
4139 break;
4140
4141 resp = (struct htt_resp *)skb->data;
4142
4143 release = ath10k_htt_rx_proc_rx_ind_hl(htt,
4144 &resp->rx_ind_hl,
4145 skb,
4146 HTT_RX_PN_CHECK,
4147 HTT_RX_NON_TKIP_MIC);
4148
4149 if (release)
4150 dev_kfree_skb_any(skb);
4151
4152 ath10k_dbg(ar, ATH10K_DBG_HTT, "rx indication poll pending count:%d\n",
4153 skb_queue_len(&htt->rx_indication_head));
4154 }
4155 return quota;
4156 }
4157 EXPORT_SYMBOL(ath10k_htt_rx_hl_indication);
4158
4159 int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget)
4160 {
4161 struct ath10k_htt *htt = &ar->htt;
4162 struct htt_tx_done tx_done = {};
4163 struct sk_buff_head tx_ind_q;
4164 struct sk_buff *skb;
4165 unsigned long flags;
4166 int quota = 0, done, ret;
4167 bool resched_napi = false;
4168
4169 __skb_queue_head_init(&tx_ind_q);
4170
4171 /* Process pending frames before dequeuing more data
4172 * from hardware.
4173 */
4174 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget);
4175 if (quota == budget) {
4176 resched_napi = true;
4177 goto exit;
4178 }
4179
4180 while ((skb = skb_dequeue(&htt->rx_in_ord_compl_q))) {
4181 spin_lock_bh(&htt->rx_ring.lock);
4182 ret = ath10k_htt_rx_in_ord_ind(ar, skb);
4183 spin_unlock_bh(&htt->rx_ring.lock);
4184
4185 dev_kfree_skb_any(skb);
4186 if (ret == -EIO) {
4187 resched_napi = true;
4188 goto exit;
4189 }
4190 }
4191
4192 while (atomic_read(&htt->num_mpdus_ready)) {
4193 ret = ath10k_htt_rx_handle_amsdu(htt);
4194 if (ret == -EIO) {
4195 resched_napi = true;
4196 goto exit;
4197 }
4198 atomic_dec(&htt->num_mpdus_ready);
4199 }
4200
4201 /* Deliver received data after processing data from hardware */
4202 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget);
4203
4204 /* From NAPI documentation:
4205 * The napi poll() function may also process TX completions, in which
4206 * case if it processes the entire TX ring then it should count that
4207 * work as the rest of the budget.
4208 */
4209 if ((quota < budget) && !kfifo_is_empty(&htt->txdone_fifo))
4210 quota = budget;
4211
4212 /* kfifo_get: called only within txrx_tasklet so it's neatly serialized.
4213 * From kfifo_get() documentation:
4214 * Note that with only one concurrent reader and one concurrent writer,
4215 * you don't need extra locking to use these macro.
4216 */
4217 while (kfifo_get(&htt->txdone_fifo, &tx_done))
4218 ath10k_txrx_tx_unref(htt, &tx_done);
4219
4220 ath10k_mac_tx_push_pending(ar);
4221
4222 spin_lock_irqsave(&htt->tx_fetch_ind_q.lock, flags);
4223 skb_queue_splice_init(&htt->tx_fetch_ind_q, &tx_ind_q);
4224 spin_unlock_irqrestore(&htt->tx_fetch_ind_q.lock, flags);
4225
4226 while ((skb = __skb_dequeue(&tx_ind_q))) {
4227 ath10k_htt_rx_tx_fetch_ind(ar, skb);
4228 dev_kfree_skb_any(skb);
4229 }
4230
4231 exit:
4232 ath10k_htt_rx_msdu_buff_replenish(htt);
4233 /* In case of rx failure or more data to read, report budget
4234 * to reschedule NAPI poll
4235 */
4236 done = resched_napi ? budget : quota;
4237
4238 return done;
4239 }
4240 EXPORT_SYMBOL(ath10k_htt_txrx_compl_task);
4241
4242 static const struct ath10k_htt_rx_ops htt_rx_ops_32 = {
4243 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_32,
4244 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_32,
4245 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_32,
4246 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_32,
4247 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_32,
4248 };
4249
4250 static const struct ath10k_htt_rx_ops htt_rx_ops_64 = {
4251 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_64,
4252 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_64,
4253 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_64,
4254 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_64,
4255 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_64,
4256 };
4257
4258 static const struct ath10k_htt_rx_ops htt_rx_ops_hl = {
4259 .htt_rx_proc_rx_frag_ind = ath10k_htt_rx_proc_rx_frag_ind_hl,
4260 };
4261
4262 void ath10k_htt_set_rx_ops(struct ath10k_htt *htt)
4263 {
4264 struct ath10k *ar = htt->ar;
4265
4266 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
4267 htt->rx_ops = &htt_rx_ops_hl;
4268 else if (ar->hw_params.target_64bit)
4269 htt->rx_ops = &htt_rx_ops_64;
4270 else
4271 htt->rx_ops = &htt_rx_ops_32;
4272 }
Ubuntu Hirsute Linux kernel mirror