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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
24static int ath10k_htt_rx_get_csum_state(struct sk_buff *skb);
25
26static struct sk_buff *
27ath10k_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
39static 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
75static 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
80static 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
85static 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
91static 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
97static 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
103static 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
109static 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
114static 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
119static void *ath10k_htt_get_vaddr_ring_32(struct ath10k_htt *htt)
120{
121 return (void *)htt->rx_ring.paddrs_ring_32;
122}
123
124static void *ath10k_htt_get_vaddr_ring_64(struct ath10k_htt *htt)
125{
126 return (void *)htt->rx_ring.paddrs_ring_64;
127}
128
129static 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
196fail:
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
206static 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
212static 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
253static 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
260int 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
280void 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
308static 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 */
342static 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
443static 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
469static 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
478static 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
553static int
554ath10k_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
629static 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
691static 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
752int 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
821err_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);
826err_dma_ring:
827 kfree(htt->rx_ring.netbufs_ring);
828err_netbuf:
829 return -ENOMEM;
830}
831
832static 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
862static 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
888static 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
913struct 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
921static 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
943static 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
1059static struct ieee80211_channel *
1060ath10k_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
1097static struct ieee80211_channel *
1098ath10k_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
1114static void
1115ath10k_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
1124static struct ieee80211_channel *
1125ath10k_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
1136static 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
1166static 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
1189static 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
1203static 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
1253static const char * const tid_to_ac[] = {
1254 "BE",
1255 "BK",
1256 "BK",
1257 "BE",
1258 "VI",
1259 "VI",
1260 "VO",
1261 "VO",
1262};
1263
1264static 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
1282static 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
1294static 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
1340static 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
1352static 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
1476static 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
1535static 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
1571static 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
1632static 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
1669static 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
1713static 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
1744static 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
1749static 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
1771static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar,
1772 struct sk_buff *skb,
1773 u16 offset)
1774{
1775 struct ieee80211_hdr *hdr;
1776
1777 hdr = (struct ieee80211_hdr *)(skb->data + offset);
1778 return !is_multicast_ether_addr(hdr->addr1);
1779}
1780
1781static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar,
1782 struct sk_buff *skb,
1783 u16 peer_id,
1784 u16 offset,
1785 enum htt_rx_mpdu_encrypt_type enctype)
1786{
1787 struct ath10k_peer *peer;
1788 union htt_rx_pn_t *last_pn, new_pn = {0};
1789 struct ieee80211_hdr *hdr;
1790 u8 tid, frag_number;
1791 u32 seq;
1792
1793 peer = ath10k_peer_find_by_id(ar, peer_id);
1794 if (!peer) {
1795 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n");
1796 return false;
1797 }
1798
1799 hdr = (struct ieee80211_hdr *)(skb->data + offset);
1800 if (ieee80211_is_data_qos(hdr->frame_control))
1801 tid = ieee80211_get_tid(hdr);
1802 else
1803 tid = ATH10K_TXRX_NON_QOS_TID;
1804
1805 last_pn = &peer->frag_tids_last_pn[tid];
1806 new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, offset, enctype);
1807 frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
1808 seq = (__le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
1809
1810 if (frag_number == 0) {
1811 last_pn->pn48 = new_pn.pn48;
1812 peer->frag_tids_seq[tid] = seq;
1813 } else {
1814 if (seq != peer->frag_tids_seq[tid])
1815 return false;
1816
1817 if (new_pn.pn48 != last_pn->pn48 + 1)
1818 return false;
1819
1820 last_pn->pn48 = new_pn.pn48;
1821 }
1822
1823 return true;
1824}
1825
1826static void ath10k_htt_rx_h_mpdu(struct ath10k *ar,
1827 struct sk_buff_head *amsdu,
1828 struct ieee80211_rx_status *status,
1829 bool fill_crypt_header,
1830 u8 *rx_hdr,
1831 enum ath10k_pkt_rx_err *err,
1832 u16 peer_id,
1833 bool frag)
1834{
1835 struct sk_buff *first;
1836 struct sk_buff *last;
1837 struct sk_buff *msdu, *temp;
1838 struct htt_rx_desc *rxd;
1839 struct ieee80211_hdr *hdr;
1840 enum htt_rx_mpdu_encrypt_type enctype;
1841 u8 first_hdr[64];
1842 u8 *qos;
1843 bool has_fcs_err;
1844 bool has_crypto_err;
1845 bool has_tkip_err;
1846 bool has_peer_idx_invalid;
1847 bool is_decrypted;
1848 bool is_mgmt;
1849 u32 attention;
1850 bool frag_pn_check = true, multicast_check = true;
1851
1852 if (skb_queue_empty(amsdu))
1853 return;
1854
1855 first = skb_peek(amsdu);
1856 rxd = (void *)first->data - sizeof(*rxd);
1857
1858 is_mgmt = !!(rxd->attention.flags &
1859 __cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE));
1860
1861 enctype = MS(__le32_to_cpu(rxd->mpdu_start.info0),
1862 RX_MPDU_START_INFO0_ENCRYPT_TYPE);
1863
1864 /* First MSDU's Rx descriptor in an A-MSDU contains full 802.11
1865 * decapped header. It'll be used for undecapping of each MSDU.
1866 */
1867 hdr = (void *)rxd->rx_hdr_status;
1868 memcpy(first_hdr, hdr, RX_HTT_HDR_STATUS_LEN);
1869
1870 if (rx_hdr)
1871 memcpy(rx_hdr, hdr, RX_HTT_HDR_STATUS_LEN);
1872
1873 /* Each A-MSDU subframe will use the original header as the base and be
1874 * reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl.
1875 */
1876 hdr = (void *)first_hdr;
1877
1878 if (ieee80211_is_data_qos(hdr->frame_control)) {
1879 qos = ieee80211_get_qos_ctl(hdr);
1880 qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1881 }
1882
1883 /* Some attention flags are valid only in the last MSDU. */
1884 last = skb_peek_tail(amsdu);
1885 rxd = (void *)last->data - sizeof(*rxd);
1886 attention = __le32_to_cpu(rxd->attention.flags);
1887
1888 has_fcs_err = !!(attention & RX_ATTENTION_FLAGS_FCS_ERR);
1889 has_crypto_err = !!(attention & RX_ATTENTION_FLAGS_DECRYPT_ERR);
1890 has_tkip_err = !!(attention & RX_ATTENTION_FLAGS_TKIP_MIC_ERR);
1891 has_peer_idx_invalid = !!(attention & RX_ATTENTION_FLAGS_PEER_IDX_INVALID);
1892
1893 /* Note: If hardware captures an encrypted frame that it can't decrypt,
1894 * e.g. due to fcs error, missing peer or invalid key data it will
1895 * report the frame as raw.
1896 */
1897 is_decrypted = (enctype != HTT_RX_MPDU_ENCRYPT_NONE &&
1898 !has_fcs_err &&
1899 !has_crypto_err &&
1900 !has_peer_idx_invalid);
1901
1902 /* Clear per-MPDU flags while leaving per-PPDU flags intact. */
1903 status->flag &= ~(RX_FLAG_FAILED_FCS_CRC |
1904 RX_FLAG_MMIC_ERROR |
1905 RX_FLAG_DECRYPTED |
1906 RX_FLAG_IV_STRIPPED |
1907 RX_FLAG_ONLY_MONITOR |
1908 RX_FLAG_MMIC_STRIPPED);
1909
1910 if (has_fcs_err)
1911 status->flag |= RX_FLAG_FAILED_FCS_CRC;
1912
1913 if (has_tkip_err)
1914 status->flag |= RX_FLAG_MMIC_ERROR;
1915
1916 if (err) {
1917 if (has_fcs_err)
1918 *err = ATH10K_PKT_RX_ERR_FCS;
1919 else if (has_tkip_err)
1920 *err = ATH10K_PKT_RX_ERR_TKIP;
1921 else if (has_crypto_err)
1922 *err = ATH10K_PKT_RX_ERR_CRYPT;
1923 else if (has_peer_idx_invalid)
1924 *err = ATH10K_PKT_RX_ERR_PEER_IDX_INVAL;
1925 }
1926
1927 /* Firmware reports all necessary management frames via WMI already.
1928 * They are not reported to monitor interfaces at all so pass the ones
1929 * coming via HTT to monitor interfaces instead. This simplifies
1930 * matters a lot.
1931 */
1932 if (is_mgmt)
1933 status->flag |= RX_FLAG_ONLY_MONITOR;
1934
1935 if (is_decrypted) {
1936 status->flag |= RX_FLAG_DECRYPTED;
1937
1938 if (likely(!is_mgmt))
1939 status->flag |= RX_FLAG_MMIC_STRIPPED;
1940
1941 if (fill_crypt_header)
1942 status->flag |= RX_FLAG_MIC_STRIPPED |
1943 RX_FLAG_ICV_STRIPPED;
1944 else
1945 status->flag |= RX_FLAG_IV_STRIPPED;
1946 }
1947
1948 skb_queue_walk(amsdu, msdu) {
1949 if (frag && !fill_crypt_header && is_decrypted &&
1950 enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2)
1951 frag_pn_check = ath10k_htt_rx_h_frag_pn_check(ar,
1952 msdu,
1953 peer_id,
1954 0,
1955 enctype);
1956
1957 if (frag)
1958 multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar,
1959 msdu,
1960 0);
1961
1962 if (!frag_pn_check || !multicast_check) {
1963 /* Discard the fragment with invalid PN or multicast DA
1964 */
1965 temp = msdu->prev;
1966 __skb_unlink(msdu, amsdu);
1967 dev_kfree_skb_any(msdu);
1968 msdu = temp;
1969 frag_pn_check = true;
1970 multicast_check = true;
1971 continue;
1972 }
1973
1974 ath10k_htt_rx_h_csum_offload(msdu);
1975
1976 if (frag && !fill_crypt_header &&
1977 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
1978 status->flag &= ~RX_FLAG_MMIC_STRIPPED;
1979
1980 ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype,
1981 is_decrypted);
1982
1983 /* Undecapping involves copying the original 802.11 header back
1984 * to sk_buff. If frame is protected and hardware has decrypted
1985 * it then remove the protected bit.
1986 */
1987 if (!is_decrypted)
1988 continue;
1989 if (is_mgmt)
1990 continue;
1991
1992 if (fill_crypt_header)
1993 continue;
1994
1995 hdr = (void *)msdu->data;
1996 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
1997
1998 if (frag && !fill_crypt_header &&
1999 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
2000 status->flag &= ~RX_FLAG_IV_STRIPPED &
2001 ~RX_FLAG_MMIC_STRIPPED;
2002 }
2003}
2004
2005static void ath10k_htt_rx_h_enqueue(struct ath10k *ar,
2006 struct sk_buff_head *amsdu,
2007 struct ieee80211_rx_status *status)
2008{
2009 struct sk_buff *msdu;
2010 struct sk_buff *first_subframe;
2011
2012 first_subframe = skb_peek(amsdu);
2013
2014 while ((msdu = __skb_dequeue(amsdu))) {
2015 /* Setup per-MSDU flags */
2016 if (skb_queue_empty(amsdu))
2017 status->flag &= ~RX_FLAG_AMSDU_MORE;
2018 else
2019 status->flag |= RX_FLAG_AMSDU_MORE;
2020
2021 if (msdu == first_subframe) {
2022 first_subframe = NULL;
2023 status->flag &= ~RX_FLAG_ALLOW_SAME_PN;
2024 } else {
2025 status->flag |= RX_FLAG_ALLOW_SAME_PN;
2026 }
2027
2028 ath10k_htt_rx_h_queue_msdu(ar, status, msdu);
2029 }
2030}
2031
2032static int ath10k_unchain_msdu(struct sk_buff_head *amsdu,
2033 unsigned long *unchain_cnt)
2034{
2035 struct sk_buff *skb, *first;
2036 int space;
2037 int total_len = 0;
2038 int amsdu_len = skb_queue_len(amsdu);
2039
2040 /* TODO: Might could optimize this by using
2041 * skb_try_coalesce or similar method to
2042 * decrease copying, or maybe get mac80211 to
2043 * provide a way to just receive a list of
2044 * skb?
2045 */
2046
2047 first = __skb_dequeue(amsdu);
2048
2049 /* Allocate total length all at once. */
2050 skb_queue_walk(amsdu, skb)
2051 total_len += skb->len;
2052
2053 space = total_len - skb_tailroom(first);
2054 if ((space > 0) &&
2055 (pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0)) {
2056 /* TODO: bump some rx-oom error stat */
2057 /* put it back together so we can free the
2058 * whole list at once.
2059 */
2060 __skb_queue_head(amsdu, first);
2061 return -1;
2062 }
2063
2064 /* Walk list again, copying contents into
2065 * msdu_head
2066 */
2067 while ((skb = __skb_dequeue(amsdu))) {
2068 skb_copy_from_linear_data(skb, skb_put(first, skb->len),
2069 skb->len);
2070 dev_kfree_skb_any(skb);
2071 }
2072
2073 __skb_queue_head(amsdu, first);
2074
2075 *unchain_cnt += amsdu_len - 1;
2076
2077 return 0;
2078}
2079
2080static void ath10k_htt_rx_h_unchain(struct ath10k *ar,
2081 struct sk_buff_head *amsdu,
2082 unsigned long *drop_cnt,
2083 unsigned long *unchain_cnt)
2084{
2085 struct sk_buff *first;
2086 struct htt_rx_desc *rxd;
2087 enum rx_msdu_decap_format decap;
2088
2089 first = skb_peek(amsdu);
2090 rxd = (void *)first->data - sizeof(*rxd);
2091 decap = MS(__le32_to_cpu(rxd->msdu_start.common.info1),
2092 RX_MSDU_START_INFO1_DECAP_FORMAT);
2093
2094 /* FIXME: Current unchaining logic can only handle simple case of raw
2095 * msdu chaining. If decapping is other than raw the chaining may be
2096 * more complex and this isn't handled by the current code. Don't even
2097 * try re-constructing such frames - it'll be pretty much garbage.
2098 */
2099 if (decap != RX_MSDU_DECAP_RAW ||
2100 skb_queue_len(amsdu) != 1 + rxd->frag_info.ring2_more_count) {
2101 *drop_cnt += skb_queue_len(amsdu);
2102 __skb_queue_purge(amsdu);
2103 return;
2104 }
2105
2106 ath10k_unchain_msdu(amsdu, unchain_cnt);
2107}
2108
2109static bool ath10k_htt_rx_validate_amsdu(struct ath10k *ar,
2110 struct sk_buff_head *amsdu)
2111{
2112 u8 *subframe_hdr;
2113 struct sk_buff *first;
2114 bool is_first, is_last;
2115 struct htt_rx_desc *rxd;
2116 struct ieee80211_hdr *hdr;
2117 size_t hdr_len, crypto_len;
2118 enum htt_rx_mpdu_encrypt_type enctype;
2119 int bytes_aligned = ar->hw_params.decap_align_bytes;
2120
2121 first = skb_peek(amsdu);
2122
2123 rxd = (void *)first->data - sizeof(*rxd);
2124 hdr = (void *)rxd->rx_hdr_status;
2125
2126 is_first = !!(rxd->msdu_end.common.info0 &
2127 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
2128 is_last = !!(rxd->msdu_end.common.info0 &
2129 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
2130
2131 /* Return in case of non-aggregated msdu */
2132 if (is_first && is_last)
2133 return true;
2134
2135 /* First msdu flag is not set for the first msdu of the list */
2136 if (!is_first)
2137 return false;
2138
2139 enctype = MS(__le32_to_cpu(rxd->mpdu_start.info0),
2140 RX_MPDU_START_INFO0_ENCRYPT_TYPE);
2141
2142 hdr_len = ieee80211_hdrlen(hdr->frame_control);
2143 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
2144
2145 subframe_hdr = (u8 *)hdr + round_up(hdr_len, bytes_aligned) +
2146 crypto_len;
2147
2148 /* Validate if the amsdu has a proper first subframe.
2149 * There are chances a single msdu can be received as amsdu when
2150 * the unauthenticated amsdu flag of a QoS header
2151 * gets flipped in non-SPP AMSDU's, in such cases the first
2152 * subframe has llc/snap header in place of a valid da.
2153 * return false if the da matches rfc1042 pattern
2154 */
2155 if (ether_addr_equal(subframe_hdr, rfc1042_header))
2156 return false;
2157
2158 return true;
2159}
2160
2161static bool ath10k_htt_rx_amsdu_allowed(struct ath10k *ar,
2162 struct sk_buff_head *amsdu,
2163 struct ieee80211_rx_status *rx_status)
2164{
2165 if (!rx_status->freq) {
2166 ath10k_dbg(ar, ATH10K_DBG_HTT, "no channel configured; ignoring frame(s)!\n");
2167 return false;
2168 }
2169
2170 if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags)) {
2171 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx cac running\n");
2172 return false;
2173 }
2174
2175 if (!ath10k_htt_rx_validate_amsdu(ar, amsdu)) {
2176 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid amsdu received\n");
2177 return false;
2178 }
2179
2180 return true;
2181}
2182
2183static void ath10k_htt_rx_h_filter(struct ath10k *ar,
2184 struct sk_buff_head *amsdu,
2185 struct ieee80211_rx_status *rx_status,
2186 unsigned long *drop_cnt)
2187{
2188 if (skb_queue_empty(amsdu))
2189 return;
2190
2191 if (ath10k_htt_rx_amsdu_allowed(ar, amsdu, rx_status))
2192 return;
2193
2194 if (drop_cnt)
2195 *drop_cnt += skb_queue_len(amsdu);
2196
2197 __skb_queue_purge(amsdu);
2198}
2199
2200static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt)
2201{
2202 struct ath10k *ar = htt->ar;
2203 struct ieee80211_rx_status *rx_status = &htt->rx_status;
2204 struct sk_buff_head amsdu;
2205 int ret;
2206 unsigned long drop_cnt = 0;
2207 unsigned long unchain_cnt = 0;
2208 unsigned long drop_cnt_filter = 0;
2209 unsigned long msdus_to_queue, num_msdus;
2210 enum ath10k_pkt_rx_err err = ATH10K_PKT_RX_ERR_MAX;
2211 u8 first_hdr[RX_HTT_HDR_STATUS_LEN];
2212
2213 __skb_queue_head_init(&amsdu);
2214
2215 spin_lock_bh(&htt->rx_ring.lock);
2216 if (htt->rx_confused) {
2217 spin_unlock_bh(&htt->rx_ring.lock);
2218 return -EIO;
2219 }
2220 ret = ath10k_htt_rx_amsdu_pop(htt, &amsdu);
2221 spin_unlock_bh(&htt->rx_ring.lock);
2222
2223 if (ret < 0) {
2224 ath10k_warn(ar, "rx ring became corrupted: %d\n", ret);
2225 __skb_queue_purge(&amsdu);
2226 /* FIXME: It's probably a good idea to reboot the
2227 * device instead of leaving it inoperable.
2228 */
2229 htt->rx_confused = true;
2230 return ret;
2231 }
2232
2233 num_msdus = skb_queue_len(&amsdu);
2234
2235 ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff);
2236
2237 /* only for ret = 1 indicates chained msdus */
2238 if (ret > 0)
2239 ath10k_htt_rx_h_unchain(ar, &amsdu, &drop_cnt, &unchain_cnt);
2240
2241 ath10k_htt_rx_h_filter(ar, &amsdu, rx_status, &drop_cnt_filter);
2242 ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err, 0,
2243 false);
2244 msdus_to_queue = skb_queue_len(&amsdu);
2245 ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status);
2246
2247 ath10k_sta_update_rx_tid_stats(ar, first_hdr, num_msdus, err,
2248 unchain_cnt, drop_cnt, drop_cnt_filter,
2249 msdus_to_queue);
2250
2251 return 0;
2252}
2253
2254static void ath10k_htt_rx_mpdu_desc_pn_hl(struct htt_hl_rx_desc *rx_desc,
2255 union htt_rx_pn_t *pn,
2256 int pn_len_bits)
2257{
2258 switch (pn_len_bits) {
2259 case 48:
2260 pn->pn48 = __le32_to_cpu(rx_desc->pn_31_0) +
2261 ((u64)(__le32_to_cpu(rx_desc->u0.pn_63_32) & 0xFFFF) << 32);
2262 break;
2263 case 24:
2264 pn->pn24 = __le32_to_cpu(rx_desc->pn_31_0);
2265 break;
2266 }
2267}
2268
2269static bool ath10k_htt_rx_pn_cmp48(union htt_rx_pn_t *new_pn,
2270 union htt_rx_pn_t *old_pn)
2271{
2272 return ((new_pn->pn48 & 0xffffffffffffULL) <=
2273 (old_pn->pn48 & 0xffffffffffffULL));
2274}
2275
2276static bool ath10k_htt_rx_pn_check_replay_hl(struct ath10k *ar,
2277 struct ath10k_peer *peer,
2278 struct htt_rx_indication_hl *rx)
2279{
2280 bool last_pn_valid, pn_invalid = false;
2281 enum htt_txrx_sec_cast_type sec_index;
2282 enum htt_security_types sec_type;
2283 union htt_rx_pn_t new_pn = {0};
2284 struct htt_hl_rx_desc *rx_desc;
2285 union htt_rx_pn_t *last_pn;
2286 u32 rx_desc_info, tid;
2287 int num_mpdu_ranges;
2288
2289 lockdep_assert_held(&ar->data_lock);
2290
2291 if (!peer)
2292 return false;
2293
2294 if (!(rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU))
2295 return false;
2296
2297 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2298 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2299
2300 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges];
2301 rx_desc_info = __le32_to_cpu(rx_desc->info);
2302
2303 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED))
2304 return false;
2305
2306 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2307 last_pn_valid = peer->tids_last_pn_valid[tid];
2308 last_pn = &peer->tids_last_pn[tid];
2309
2310 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST))
2311 sec_index = HTT_TXRX_SEC_MCAST;
2312 else
2313 sec_index = HTT_TXRX_SEC_UCAST;
2314
2315 sec_type = peer->rx_pn[sec_index].sec_type;
2316 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2317
2318 if (sec_type != HTT_SECURITY_AES_CCMP &&
2319 sec_type != HTT_SECURITY_TKIP &&
2320 sec_type != HTT_SECURITY_TKIP_NOMIC)
2321 return false;
2322
2323 if (last_pn_valid)
2324 pn_invalid = ath10k_htt_rx_pn_cmp48(&new_pn, last_pn);
2325 else
2326 peer->tids_last_pn_valid[tid] = true;
2327
2328 if (!pn_invalid)
2329 last_pn->pn48 = new_pn.pn48;
2330
2331 return pn_invalid;
2332}
2333
2334static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt,
2335 struct htt_rx_indication_hl *rx,
2336 struct sk_buff *skb,
2337 enum htt_rx_pn_check_type check_pn_type,
2338 enum htt_rx_tkip_demic_type tkip_mic_type)
2339{
2340 struct ath10k *ar = htt->ar;
2341 struct ath10k_peer *peer;
2342 struct htt_rx_indication_mpdu_range *mpdu_ranges;
2343 struct fw_rx_desc_hl *fw_desc;
2344 enum htt_txrx_sec_cast_type sec_index;
2345 enum htt_security_types sec_type;
2346 union htt_rx_pn_t new_pn = {0};
2347 struct htt_hl_rx_desc *rx_desc;
2348 struct ieee80211_hdr *hdr;
2349 struct ieee80211_rx_status *rx_status;
2350 u16 peer_id;
2351 u8 rx_desc_len;
2352 int num_mpdu_ranges;
2353 size_t tot_hdr_len;
2354 struct ieee80211_channel *ch;
2355 bool pn_invalid, qos, first_msdu;
2356 u32 tid, rx_desc_info;
2357
2358 peer_id = __le16_to_cpu(rx->hdr.peer_id);
2359 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2360
2361 spin_lock_bh(&ar->data_lock);
2362 peer = ath10k_peer_find_by_id(ar, peer_id);
2363 spin_unlock_bh(&ar->data_lock);
2364 if (!peer && peer_id != HTT_INVALID_PEERID)
2365 ath10k_warn(ar, "Got RX ind from invalid peer: %u\n", peer_id);
2366
2367 if (!peer)
2368 return true;
2369
2370 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2371 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2372 mpdu_ranges = htt_rx_ind_get_mpdu_ranges_hl(rx);
2373 fw_desc = &rx->fw_desc;
2374 rx_desc_len = fw_desc->len;
2375
2376 if (fw_desc->u.bits.discard) {
2377 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n");
2378 goto err;
2379 }
2380
2381 /* I have not yet seen any case where num_mpdu_ranges > 1.
2382 * qcacld does not seem handle that case either, so we introduce the
2383 * same limitiation here as well.
2384 */
2385 if (num_mpdu_ranges > 1)
2386 ath10k_warn(ar,
2387 "Unsupported number of MPDU ranges: %d, ignoring all but the first\n",
2388 num_mpdu_ranges);
2389
2390 if (mpdu_ranges->mpdu_range_status !=
2391 HTT_RX_IND_MPDU_STATUS_OK &&
2392 mpdu_ranges->mpdu_range_status !=
2393 HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) {
2394 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt mpdu_range_status %d\n",
2395 mpdu_ranges->mpdu_range_status);
2396 goto err;
2397 }
2398
2399 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges];
2400 rx_desc_info = __le32_to_cpu(rx_desc->info);
2401
2402 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST))
2403 sec_index = HTT_TXRX_SEC_MCAST;
2404 else
2405 sec_index = HTT_TXRX_SEC_UCAST;
2406
2407 sec_type = peer->rx_pn[sec_index].sec_type;
2408 first_msdu = rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU;
2409
2410 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2411
2412 if (check_pn_type == HTT_RX_PN_CHECK && tid >= IEEE80211_NUM_TIDS) {
2413 spin_lock_bh(&ar->data_lock);
2414 pn_invalid = ath10k_htt_rx_pn_check_replay_hl(ar, peer, rx);
2415 spin_unlock_bh(&ar->data_lock);
2416
2417 if (pn_invalid)
2418 goto err;
2419 }
2420
2421 /* Strip off all headers before the MAC header before delivery to
2422 * mac80211
2423 */
2424 tot_hdr_len = sizeof(struct htt_resp_hdr) + sizeof(rx->hdr) +
2425 sizeof(rx->ppdu) + sizeof(rx->prefix) +
2426 sizeof(rx->fw_desc) +
2427 sizeof(*mpdu_ranges) * num_mpdu_ranges + rx_desc_len;
2428
2429 skb_pull(skb, tot_hdr_len);
2430
2431 hdr = (struct ieee80211_hdr *)skb->data;
2432 qos = ieee80211_is_data_qos(hdr->frame_control);
2433
2434 rx_status = IEEE80211_SKB_RXCB(skb);
2435 memset(rx_status, 0, sizeof(*rx_status));
2436
2437 if (rx->ppdu.combined_rssi == 0) {
2438 /* SDIO firmware does not provide signal */
2439 rx_status->signal = 0;
2440 rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL;
2441 } else {
2442 rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
2443 rx->ppdu.combined_rssi;
2444 rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
2445 }
2446
2447 spin_lock_bh(&ar->data_lock);
2448 ch = ar->scan_channel;
2449 if (!ch)
2450 ch = ar->rx_channel;
2451 if (!ch)
2452 ch = ath10k_htt_rx_h_any_channel(ar);
2453 if (!ch)
2454 ch = ar->tgt_oper_chan;
2455 spin_unlock_bh(&ar->data_lock);
2456
2457 if (ch) {
2458 rx_status->band = ch->band;
2459 rx_status->freq = ch->center_freq;
2460 }
2461 if (rx->fw_desc.flags & FW_RX_DESC_FLAGS_LAST_MSDU)
2462 rx_status->flag &= ~RX_FLAG_AMSDU_MORE;
2463 else
2464 rx_status->flag |= RX_FLAG_AMSDU_MORE;
2465
2466 /* Not entirely sure about this, but all frames from the chipset has
2467 * the protected flag set even though they have already been decrypted.
2468 * Unmasking this flag is necessary in order for mac80211 not to drop
2469 * the frame.
2470 * TODO: Verify this is always the case or find out a way to check
2471 * if there has been hw decryption.
2472 */
2473 if (ieee80211_has_protected(hdr->frame_control)) {
2474 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2475 rx_status->flag |= RX_FLAG_DECRYPTED |
2476 RX_FLAG_IV_STRIPPED |
2477 RX_FLAG_MMIC_STRIPPED;
2478
2479 if (tid < IEEE80211_NUM_TIDS &&
2480 first_msdu &&
2481 check_pn_type == HTT_RX_PN_CHECK &&
2482 (sec_type == HTT_SECURITY_AES_CCMP ||
2483 sec_type == HTT_SECURITY_TKIP ||
2484 sec_type == HTT_SECURITY_TKIP_NOMIC)) {
2485 u8 offset, *ivp, i;
2486 s8 keyidx = 0;
2487 __le64 pn48 = cpu_to_le64(new_pn.pn48);
2488
2489 hdr = (struct ieee80211_hdr *)skb->data;
2490 offset = ieee80211_hdrlen(hdr->frame_control);
2491 hdr->frame_control |= __cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2492 rx_status->flag &= ~RX_FLAG_IV_STRIPPED;
2493
2494 memmove(skb->data - IEEE80211_CCMP_HDR_LEN,
2495 skb->data, offset);
2496 skb_push(skb, IEEE80211_CCMP_HDR_LEN);
2497 ivp = skb->data + offset;
2498 memset(skb->data + offset, 0, IEEE80211_CCMP_HDR_LEN);
2499 /* Ext IV */
2500 ivp[IEEE80211_WEP_IV_LEN - 1] |= ATH10K_IEEE80211_EXTIV;
2501
2502 for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
2503 if (peer->keys[i] &&
2504 peer->keys[i]->flags & IEEE80211_KEY_FLAG_PAIRWISE)
2505 keyidx = peer->keys[i]->keyidx;
2506 }
2507
2508 /* Key ID */
2509 ivp[IEEE80211_WEP_IV_LEN - 1] |= keyidx << 6;
2510
2511 if (sec_type == HTT_SECURITY_AES_CCMP) {
2512 rx_status->flag |= RX_FLAG_MIC_STRIPPED;
2513 /* pn 0, pn 1 */
2514 memcpy(skb->data + offset, &pn48, 2);
2515 /* pn 1, pn 3 , pn 34 , pn 5 */
2516 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4);
2517 } else {
2518 rx_status->flag |= RX_FLAG_ICV_STRIPPED;
2519 /* TSC 0 */
2520 memcpy(skb->data + offset + 2, &pn48, 1);
2521 /* TSC 1 */
2522 memcpy(skb->data + offset, ((u8 *)&pn48) + 1, 1);
2523 /* TSC 2 , TSC 3 , TSC 4 , TSC 5*/
2524 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4);
2525 }
2526 }
2527 }
2528
2529 if (tkip_mic_type == HTT_RX_TKIP_MIC)
2530 rx_status->flag &= ~RX_FLAG_IV_STRIPPED &
2531 ~RX_FLAG_MMIC_STRIPPED;
2532
2533 if (mpdu_ranges->mpdu_range_status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR)
2534 rx_status->flag |= RX_FLAG_MMIC_ERROR;
2535
2536 if (!qos && tid < IEEE80211_NUM_TIDS) {
2537 u8 offset;
2538 __le16 qos_ctrl = 0;
2539
2540 hdr = (struct ieee80211_hdr *)skb->data;
2541 offset = ieee80211_hdrlen(hdr->frame_control);
2542
2543 hdr->frame_control |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
2544 memmove(skb->data - IEEE80211_QOS_CTL_LEN, skb->data, offset);
2545 skb_push(skb, IEEE80211_QOS_CTL_LEN);
2546 qos_ctrl = cpu_to_le16(tid);
2547 memcpy(skb->data + offset, &qos_ctrl, IEEE80211_QOS_CTL_LEN);
2548 }
2549
2550 if (ar->napi.dev)
2551 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi);
2552 else
2553 ieee80211_rx_ni(ar->hw, skb);
2554
2555 /* We have delivered the skb to the upper layers (mac80211) so we
2556 * must not free it.
2557 */
2558 return false;
2559err:
2560 /* Tell the caller that it must free the skb since we have not
2561 * consumed it
2562 */
2563 return true;
2564}
2565
2566static int ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff *skb,
2567 u16 head_len,
2568 u16 hdr_len)
2569{
2570 u8 *ivp, *orig_hdr;
2571
2572 orig_hdr = skb->data;
2573 ivp = orig_hdr + hdr_len + head_len;
2574
2575 /* the ExtIV bit is always set to 1 for TKIP */
2576 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2577 return -EINVAL;
2578
2579 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
2580 skb_pull(skb, IEEE80211_TKIP_IV_LEN);
2581 skb_trim(skb, skb->len - ATH10K_IEEE80211_TKIP_MICLEN);
2582 return 0;
2583}
2584
2585static int ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff *skb,
2586 u16 head_len,
2587 u16 hdr_len)
2588{
2589 u8 *ivp, *orig_hdr;
2590
2591 orig_hdr = skb->data;
2592 ivp = orig_hdr + hdr_len + head_len;
2593
2594 /* the ExtIV bit is always set to 1 for TKIP */
2595 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2596 return -EINVAL;
2597
2598 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
2599 skb_pull(skb, IEEE80211_TKIP_IV_LEN);
2600 skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN);
2601 return 0;
2602}
2603
2604static int ath10k_htt_rx_frag_ccmp_decap(struct sk_buff *skb,
2605 u16 head_len,
2606 u16 hdr_len)
2607{
2608 u8 *ivp, *orig_hdr;
2609
2610 orig_hdr = skb->data;
2611 ivp = orig_hdr + hdr_len + head_len;
2612
2613 /* the ExtIV bit is always set to 1 for CCMP */
2614 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2615 return -EINVAL;
2616
2617 skb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN);
2618 memmove(orig_hdr + IEEE80211_CCMP_HDR_LEN, orig_hdr, head_len + hdr_len);
2619 skb_pull(skb, IEEE80211_CCMP_HDR_LEN);
2620 return 0;
2621}
2622
2623static int ath10k_htt_rx_frag_wep_decap(struct sk_buff *skb,
2624 u16 head_len,
2625 u16 hdr_len)
2626{
2627 u8 *orig_hdr;
2628
2629 orig_hdr = skb->data;
2630
2631 memmove(orig_hdr + IEEE80211_WEP_IV_LEN,
2632 orig_hdr, head_len + hdr_len);
2633 skb_pull(skb, IEEE80211_WEP_IV_LEN);
2634 skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN);
2635 return 0;
2636}
2637
2638static bool ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt *htt,
2639 struct htt_rx_fragment_indication *rx,
2640 struct sk_buff *skb)
2641{
2642 struct ath10k *ar = htt->ar;
2643 enum htt_rx_tkip_demic_type tkip_mic = HTT_RX_NON_TKIP_MIC;
2644 enum htt_txrx_sec_cast_type sec_index;
2645 struct htt_rx_indication_hl *rx_hl;
2646 enum htt_security_types sec_type;
2647 u32 tid, frag, seq, rx_desc_info;
2648 union htt_rx_pn_t new_pn = {0};
2649 struct htt_hl_rx_desc *rx_desc;
2650 u16 peer_id, sc, hdr_space;
2651 union htt_rx_pn_t *last_pn;
2652 struct ieee80211_hdr *hdr;
2653 int ret, num_mpdu_ranges;
2654 struct ath10k_peer *peer;
2655 struct htt_resp *resp;
2656 size_t tot_hdr_len;
2657
2658 resp = (struct htt_resp *)(skb->data + HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
2659 skb_pull(skb, HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
2660 skb_trim(skb, skb->len - FCS_LEN);
2661
2662 peer_id = __le16_to_cpu(rx->peer_id);
2663 rx_hl = (struct htt_rx_indication_hl *)(&resp->rx_ind_hl);
2664
2665 spin_lock_bh(&ar->data_lock);
2666 peer = ath10k_peer_find_by_id(ar, peer_id);
2667 if (!peer) {
2668 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer: %u\n", peer_id);
2669 goto err;
2670 }
2671
2672 num_mpdu_ranges = MS(__le32_to_cpu(rx_hl->hdr.info1),
2673 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2674
2675 tot_hdr_len = sizeof(struct htt_resp_hdr) +
2676 sizeof(rx_hl->hdr) +
2677 sizeof(rx_hl->ppdu) +
2678 sizeof(rx_hl->prefix) +
2679 sizeof(rx_hl->fw_desc) +
2680 sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges;
2681
2682 tid = MS(rx_hl->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2683 rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len);
2684 rx_desc_info = __le32_to_cpu(rx_desc->info);
2685
2686 hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len);
2687
2688 if (is_multicast_ether_addr(hdr->addr1)) {
2689 /* Discard the fragment with multicast DA */
2690 goto err;
2691 }
2692
2693 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) {
2694 spin_unlock_bh(&ar->data_lock);
2695 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
2696 HTT_RX_NON_PN_CHECK,
2697 HTT_RX_NON_TKIP_MIC);
2698 }
2699
2700 if (ieee80211_has_retry(hdr->frame_control))
2701 goto err;
2702
2703 hdr_space = ieee80211_hdrlen(hdr->frame_control);
2704 sc = __le16_to_cpu(hdr->seq_ctrl);
2705 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
2706 frag = sc & IEEE80211_SCTL_FRAG;
2707
2708 sec_index = MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST) ?
2709 HTT_TXRX_SEC_MCAST : HTT_TXRX_SEC_UCAST;
2710 sec_type = peer->rx_pn[sec_index].sec_type;
2711 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2712
2713 switch (sec_type) {
2714 case HTT_SECURITY_TKIP:
2715 tkip_mic = HTT_RX_TKIP_MIC;
2716 ret = ath10k_htt_rx_frag_tkip_decap_withmic(skb,
2717 tot_hdr_len +
2718 rx_hl->fw_desc.len,
2719 hdr_space);
2720 if (ret)
2721 goto err;
2722 break;
2723 case HTT_SECURITY_TKIP_NOMIC:
2724 ret = ath10k_htt_rx_frag_tkip_decap_nomic(skb,
2725 tot_hdr_len +
2726 rx_hl->fw_desc.len,
2727 hdr_space);
2728 if (ret)
2729 goto err;
2730 break;
2731 case HTT_SECURITY_AES_CCMP:
2732 ret = ath10k_htt_rx_frag_ccmp_decap(skb,
2733 tot_hdr_len + rx_hl->fw_desc.len,
2734 hdr_space);
2735 if (ret)
2736 goto err;
2737 break;
2738 case HTT_SECURITY_WEP128:
2739 case HTT_SECURITY_WEP104:
2740 case HTT_SECURITY_WEP40:
2741 ret = ath10k_htt_rx_frag_wep_decap(skb,
2742 tot_hdr_len + rx_hl->fw_desc.len,
2743 hdr_space);
2744 if (ret)
2745 goto err;
2746 break;
2747 default:
2748 break;
2749 }
2750
2751 resp = (struct htt_resp *)(skb->data);
2752
2753 if (sec_type != HTT_SECURITY_AES_CCMP &&
2754 sec_type != HTT_SECURITY_TKIP &&
2755 sec_type != HTT_SECURITY_TKIP_NOMIC) {
2756 spin_unlock_bh(&ar->data_lock);
2757 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
2758 HTT_RX_NON_PN_CHECK,
2759 HTT_RX_NON_TKIP_MIC);
2760 }
2761
2762 last_pn = &peer->frag_tids_last_pn[tid];
2763
2764 if (frag == 0) {
2765 if (ath10k_htt_rx_pn_check_replay_hl(ar, peer, &resp->rx_ind_hl))
2766 goto err;
2767
2768 last_pn->pn48 = new_pn.pn48;
2769 peer->frag_tids_seq[tid] = seq;
2770 } else if (sec_type == HTT_SECURITY_AES_CCMP) {
2771 if (seq != peer->frag_tids_seq[tid])
2772 goto err;
2773
2774 if (new_pn.pn48 != last_pn->pn48 + 1)
2775 goto err;
2776
2777 last_pn->pn48 = new_pn.pn48;
2778 last_pn = &peer->tids_last_pn[tid];
2779 last_pn->pn48 = new_pn.pn48;
2780 }
2781
2782 spin_unlock_bh(&ar->data_lock);
2783
2784 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
2785 HTT_RX_NON_PN_CHECK, tkip_mic);
2786
2787err:
2788 spin_unlock_bh(&ar->data_lock);
2789
2790 /* Tell the caller that it must free the skb since we have not
2791 * consumed it
2792 */
2793 return true;
2794}
2795
2796static void ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt *htt,
2797 struct htt_rx_indication *rx)
2798{
2799 struct ath10k *ar = htt->ar;
2800 struct htt_rx_indication_mpdu_range *mpdu_ranges;
2801 int num_mpdu_ranges;
2802 int i, mpdu_count = 0;
2803 u16 peer_id;
2804 u8 tid;
2805
2806 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2807 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2808 peer_id = __le16_to_cpu(rx->hdr.peer_id);
2809 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2810
2811 mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx);
2812
2813 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ",
2814 rx, struct_size(rx, mpdu_ranges, num_mpdu_ranges));
2815
2816 for (i = 0; i < num_mpdu_ranges; i++)
2817 mpdu_count += mpdu_ranges[i].mpdu_count;
2818
2819 atomic_add(mpdu_count, &htt->num_mpdus_ready);
2820
2821 ath10k_sta_update_rx_tid_stats_ampdu(ar, peer_id, tid, mpdu_ranges,
2822 num_mpdu_ranges);
2823}
2824
2825static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar,
2826 struct sk_buff *skb)
2827{
2828 struct ath10k_htt *htt = &ar->htt;
2829 struct htt_resp *resp = (struct htt_resp *)skb->data;
2830 struct htt_tx_done tx_done = {};
2831 int status = MS(resp->data_tx_completion.flags, HTT_DATA_TX_STATUS);
2832 __le16 msdu_id, *msdus;
2833 bool rssi_enabled = false;
2834 u8 msdu_count = 0, num_airtime_records, tid;
2835 int i, htt_pad = 0;
2836 struct htt_data_tx_compl_ppdu_dur *ppdu_info;
2837 struct ath10k_peer *peer;
2838 u16 ppdu_info_offset = 0, peer_id;
2839 u32 tx_duration;
2840
2841 switch (status) {
2842 case HTT_DATA_TX_STATUS_NO_ACK:
2843 tx_done.status = HTT_TX_COMPL_STATE_NOACK;
2844 break;
2845 case HTT_DATA_TX_STATUS_OK:
2846 tx_done.status = HTT_TX_COMPL_STATE_ACK;
2847 break;
2848 case HTT_DATA_TX_STATUS_DISCARD:
2849 case HTT_DATA_TX_STATUS_POSTPONE:
2850 case HTT_DATA_TX_STATUS_DOWNLOAD_FAIL:
2851 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
2852 break;
2853 default:
2854 ath10k_warn(ar, "unhandled tx completion status %d\n", status);
2855 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
2856 break;
2857 }
2858
2859 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx completion num_msdus %d\n",
2860 resp->data_tx_completion.num_msdus);
2861
2862 msdu_count = resp->data_tx_completion.num_msdus;
2863 msdus = resp->data_tx_completion.msdus;
2864 rssi_enabled = ath10k_is_rssi_enable(&ar->hw_params, resp);
2865
2866 if (rssi_enabled)
2867 htt_pad = ath10k_tx_data_rssi_get_pad_bytes(&ar->hw_params,
2868 resp);
2869
2870 for (i = 0; i < msdu_count; i++) {
2871 msdu_id = msdus[i];
2872 tx_done.msdu_id = __le16_to_cpu(msdu_id);
2873
2874 if (rssi_enabled) {
2875 /* Total no of MSDUs should be even,
2876 * if odd MSDUs are sent firmware fills
2877 * last msdu id with 0xffff
2878 */
2879 if (msdu_count & 0x01) {
2880 msdu_id = msdus[msdu_count + i + 1 + htt_pad];
2881 tx_done.ack_rssi = __le16_to_cpu(msdu_id);
2882 } else {
2883 msdu_id = msdus[msdu_count + i + htt_pad];
2884 tx_done.ack_rssi = __le16_to_cpu(msdu_id);
2885 }
2886 }
2887
2888 /* kfifo_put: In practice firmware shouldn't fire off per-CE
2889 * interrupt and main interrupt (MSI/-X range case) for the same
2890 * HTC service so it should be safe to use kfifo_put w/o lock.
2891 *
2892 * From kfifo_put() documentation:
2893 * Note that with only one concurrent reader and one concurrent
2894 * writer, you don't need extra locking to use these macro.
2895 */
2896 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) {
2897 ath10k_txrx_tx_unref(htt, &tx_done);
2898 } else if (!kfifo_put(&htt->txdone_fifo, tx_done)) {
2899 ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n",
2900 tx_done.msdu_id, tx_done.status);
2901 ath10k_txrx_tx_unref(htt, &tx_done);
2902 }
2903 }
2904
2905 if (!(resp->data_tx_completion.flags2 & HTT_TX_CMPL_FLAG_PPDU_DURATION_PRESENT))
2906 return;
2907
2908 ppdu_info_offset = (msdu_count & 0x01) ? msdu_count + 1 : msdu_count;
2909
2910 if (rssi_enabled)
2911 ppdu_info_offset += ppdu_info_offset;
2912
2913 if (resp->data_tx_completion.flags2 &
2914 (HTT_TX_CMPL_FLAG_PPID_PRESENT | HTT_TX_CMPL_FLAG_PA_PRESENT))
2915 ppdu_info_offset += 2;
2916
2917 ppdu_info = (struct htt_data_tx_compl_ppdu_dur *)&msdus[ppdu_info_offset];
2918 num_airtime_records = FIELD_GET(HTT_TX_COMPL_PPDU_DUR_INFO0_NUM_ENTRIES_MASK,
2919 __le32_to_cpu(ppdu_info->info0));
2920
2921 for (i = 0; i < num_airtime_records; i++) {
2922 struct htt_data_tx_ppdu_dur *ppdu_dur;
2923 u32 info0;
2924
2925 ppdu_dur = &ppdu_info->ppdu_dur[i];
2926 info0 = __le32_to_cpu(ppdu_dur->info0);
2927
2928 peer_id = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_PEER_ID_MASK,
2929 info0);
2930 rcu_read_lock();
2931 spin_lock_bh(&ar->data_lock);
2932
2933 peer = ath10k_peer_find_by_id(ar, peer_id);
2934 if (!peer || !peer->sta) {
2935 spin_unlock_bh(&ar->data_lock);
2936 rcu_read_unlock();
2937 continue;
2938 }
2939
2940 tid = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_TID_MASK, info0) &
2941 IEEE80211_QOS_CTL_TID_MASK;
2942 tx_duration = __le32_to_cpu(ppdu_dur->tx_duration);
2943
2944 ieee80211_sta_register_airtime(peer->sta, tid, tx_duration, 0);
2945
2946 spin_unlock_bh(&ar->data_lock);
2947 rcu_read_unlock();
2948 }
2949}
2950
2951static void ath10k_htt_rx_addba(struct ath10k *ar, struct htt_resp *resp)
2952{
2953 struct htt_rx_addba *ev = &resp->rx_addba;
2954 struct ath10k_peer *peer;
2955 struct ath10k_vif *arvif;
2956 u16 info0, tid, peer_id;
2957
2958 info0 = __le16_to_cpu(ev->info0);
2959 tid = MS(info0, HTT_RX_BA_INFO0_TID);
2960 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID);
2961
2962 ath10k_dbg(ar, ATH10K_DBG_HTT,
2963 "htt rx addba tid %u peer_id %u size %u\n",
2964 tid, peer_id, ev->window_size);
2965
2966 spin_lock_bh(&ar->data_lock);
2967 peer = ath10k_peer_find_by_id(ar, peer_id);
2968 if (!peer) {
2969 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n",
2970 peer_id);
2971 spin_unlock_bh(&ar->data_lock);
2972 return;
2973 }
2974
2975 arvif = ath10k_get_arvif(ar, peer->vdev_id);
2976 if (!arvif) {
2977 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n",
2978 peer->vdev_id);
2979 spin_unlock_bh(&ar->data_lock);
2980 return;
2981 }
2982
2983 ath10k_dbg(ar, ATH10K_DBG_HTT,
2984 "htt rx start rx ba session sta %pM tid %u size %u\n",
2985 peer->addr, tid, ev->window_size);
2986
2987 ieee80211_start_rx_ba_session_offl(arvif->vif, peer->addr, tid);
2988 spin_unlock_bh(&ar->data_lock);
2989}
2990
2991static void ath10k_htt_rx_delba(struct ath10k *ar, struct htt_resp *resp)
2992{
2993 struct htt_rx_delba *ev = &resp->rx_delba;
2994 struct ath10k_peer *peer;
2995 struct ath10k_vif *arvif;
2996 u16 info0, tid, peer_id;
2997
2998 info0 = __le16_to_cpu(ev->info0);
2999 tid = MS(info0, HTT_RX_BA_INFO0_TID);
3000 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID);
3001
3002 ath10k_dbg(ar, ATH10K_DBG_HTT,
3003 "htt rx delba tid %u peer_id %u\n",
3004 tid, peer_id);
3005
3006 spin_lock_bh(&ar->data_lock);
3007 peer = ath10k_peer_find_by_id(ar, peer_id);
3008 if (!peer) {
3009 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n",
3010 peer_id);
3011 spin_unlock_bh(&ar->data_lock);
3012 return;
3013 }
3014
3015 arvif = ath10k_get_arvif(ar, peer->vdev_id);
3016 if (!arvif) {
3017 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n",
3018 peer->vdev_id);
3019 spin_unlock_bh(&ar->data_lock);
3020 return;
3021 }
3022
3023 ath10k_dbg(ar, ATH10K_DBG_HTT,
3024 "htt rx stop rx ba session sta %pM tid %u\n",
3025 peer->addr, tid);
3026
3027 ieee80211_stop_rx_ba_session_offl(arvif->vif, peer->addr, tid);
3028 spin_unlock_bh(&ar->data_lock);
3029}
3030
3031static int ath10k_htt_rx_extract_amsdu(struct sk_buff_head *list,
3032 struct sk_buff_head *amsdu)
3033{
3034 struct sk_buff *msdu;
3035 struct htt_rx_desc *rxd;
3036
3037 if (skb_queue_empty(list))
3038 return -ENOBUFS;
3039
3040 if (WARN_ON(!skb_queue_empty(amsdu)))
3041 return -EINVAL;
3042
3043 while ((msdu = __skb_dequeue(list))) {
3044 __skb_queue_tail(amsdu, msdu);
3045
3046 rxd = (void *)msdu->data - sizeof(*rxd);
3047 if (rxd->msdu_end.common.info0 &
3048 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))
3049 break;
3050 }
3051
3052 msdu = skb_peek_tail(amsdu);
3053 rxd = (void *)msdu->data - sizeof(*rxd);
3054 if (!(rxd->msdu_end.common.info0 &
3055 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))) {
3056 skb_queue_splice_init(amsdu, list);
3057 return -EAGAIN;
3058 }
3059
3060 return 0;
3061}
3062
3063static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status,
3064 struct sk_buff *skb)
3065{
3066 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
3067
3068 if (!ieee80211_has_protected(hdr->frame_control))
3069 return;
3070
3071 /* Offloaded frames are already decrypted but firmware insists they are
3072 * protected in the 802.11 header. Strip the flag. Otherwise mac80211
3073 * will drop the frame.
3074 */
3075
3076 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
3077 status->flag |= RX_FLAG_DECRYPTED |
3078 RX_FLAG_IV_STRIPPED |
3079 RX_FLAG_MMIC_STRIPPED;
3080}
3081
3082static void ath10k_htt_rx_h_rx_offload(struct ath10k *ar,
3083 struct sk_buff_head *list)
3084{
3085 struct ath10k_htt *htt = &ar->htt;
3086 struct ieee80211_rx_status *status = &htt->rx_status;
3087 struct htt_rx_offload_msdu *rx;
3088 struct sk_buff *msdu;
3089 size_t offset;
3090
3091 while ((msdu = __skb_dequeue(list))) {
3092 /* Offloaded frames don't have Rx descriptor. Instead they have
3093 * a short meta information header.
3094 */
3095
3096 rx = (void *)msdu->data;
3097
3098 skb_put(msdu, sizeof(*rx));
3099 skb_pull(msdu, sizeof(*rx));
3100
3101 if (skb_tailroom(msdu) < __le16_to_cpu(rx->msdu_len)) {
3102 ath10k_warn(ar, "dropping frame: offloaded rx msdu is too long!\n");
3103 dev_kfree_skb_any(msdu);
3104 continue;
3105 }
3106
3107 skb_put(msdu, __le16_to_cpu(rx->msdu_len));
3108
3109 /* Offloaded rx header length isn't multiple of 2 nor 4 so the
3110 * actual payload is unaligned. Align the frame. Otherwise
3111 * mac80211 complains. This shouldn't reduce performance much
3112 * because these offloaded frames are rare.
3113 */
3114 offset = 4 - ((unsigned long)msdu->data & 3);
3115 skb_put(msdu, offset);
3116 memmove(msdu->data + offset, msdu->data, msdu->len);
3117 skb_pull(msdu, offset);
3118
3119 /* FIXME: The frame is NWifi. Re-construct QoS Control
3120 * if possible later.
3121 */
3122
3123 memset(status, 0, sizeof(*status));
3124 status->flag |= RX_FLAG_NO_SIGNAL_VAL;
3125
3126 ath10k_htt_rx_h_rx_offload_prot(status, msdu);
3127 ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id);
3128 ath10k_htt_rx_h_queue_msdu(ar, status, msdu);
3129 }
3130}
3131
3132static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb)
3133{
3134 struct ath10k_htt *htt = &ar->htt;
3135 struct htt_resp *resp = (void *)skb->data;
3136 struct ieee80211_rx_status *status = &htt->rx_status;
3137 struct sk_buff_head list;
3138 struct sk_buff_head amsdu;
3139 u16 peer_id;
3140 u16 msdu_count;
3141 u8 vdev_id;
3142 u8 tid;
3143 bool offload;
3144 bool frag;
3145 int ret;
3146
3147 lockdep_assert_held(&htt->rx_ring.lock);
3148
3149 if (htt->rx_confused)
3150 return -EIO;
3151
3152 skb_pull(skb, sizeof(resp->hdr));
3153 skb_pull(skb, sizeof(resp->rx_in_ord_ind));
3154
3155 peer_id = __le16_to_cpu(resp->rx_in_ord_ind.peer_id);
3156 msdu_count = __le16_to_cpu(resp->rx_in_ord_ind.msdu_count);
3157 vdev_id = resp->rx_in_ord_ind.vdev_id;
3158 tid = SM(resp->rx_in_ord_ind.info, HTT_RX_IN_ORD_IND_INFO_TID);
3159 offload = !!(resp->rx_in_ord_ind.info &
3160 HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
3161 frag = !!(resp->rx_in_ord_ind.info & HTT_RX_IN_ORD_IND_INFO_FRAG_MASK);
3162
3163 ath10k_dbg(ar, ATH10K_DBG_HTT,
3164 "htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n",
3165 vdev_id, peer_id, tid, offload, frag, msdu_count);
3166
3167 if (skb->len < msdu_count * sizeof(*resp->rx_in_ord_ind.msdu_descs32)) {
3168 ath10k_warn(ar, "dropping invalid in order rx indication\n");
3169 return -EINVAL;
3170 }
3171
3172 /* The event can deliver more than 1 A-MSDU. Each A-MSDU is later
3173 * extracted and processed.
3174 */
3175 __skb_queue_head_init(&list);
3176 if (ar->hw_params.target_64bit)
3177 ret = ath10k_htt_rx_pop_paddr64_list(htt, &resp->rx_in_ord_ind,
3178 &list);
3179 else
3180 ret = ath10k_htt_rx_pop_paddr32_list(htt, &resp->rx_in_ord_ind,
3181 &list);
3182
3183 if (ret < 0) {
3184 ath10k_warn(ar, "failed to pop paddr list: %d\n", ret);
3185 htt->rx_confused = true;
3186 return -EIO;
3187 }
3188
3189 /* Offloaded frames are very different and need to be handled
3190 * separately.
3191 */
3192 if (offload)
3193 ath10k_htt_rx_h_rx_offload(ar, &list);
3194
3195 while (!skb_queue_empty(&list)) {
3196 __skb_queue_head_init(&amsdu);
3197 ret = ath10k_htt_rx_extract_amsdu(&list, &amsdu);
3198 switch (ret) {
3199 case 0:
3200 /* Note: The in-order indication may report interleaved
3201 * frames from different PPDUs meaning reported rx rate
3202 * to mac80211 isn't accurate/reliable. It's still
3203 * better to report something than nothing though. This
3204 * should still give an idea about rx rate to the user.
3205 */
3206 ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id);
3207 ath10k_htt_rx_h_filter(ar, &amsdu, status, NULL);
3208 ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false, NULL,
3209 NULL, peer_id, frag);
3210 ath10k_htt_rx_h_enqueue(ar, &amsdu, status);
3211 break;
3212 case -EAGAIN:
3213 fallthrough;
3214 default:
3215 /* Should not happen. */
3216 ath10k_warn(ar, "failed to extract amsdu: %d\n", ret);
3217 htt->rx_confused = true;
3218 __skb_queue_purge(&list);
3219 return -EIO;
3220 }
3221 }
3222 return ret;
3223}
3224
3225static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar,
3226 const __le32 *resp_ids,
3227 int num_resp_ids)
3228{
3229 int i;
3230 u32 resp_id;
3231
3232 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm num_resp_ids %d\n",
3233 num_resp_ids);
3234
3235 for (i = 0; i < num_resp_ids; i++) {
3236 resp_id = le32_to_cpu(resp_ids[i]);
3237
3238 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm resp_id %u\n",
3239 resp_id);
3240
3241 /* TODO: free resp_id */
3242 }
3243}
3244
3245static void ath10k_htt_rx_tx_fetch_ind(struct ath10k *ar, struct sk_buff *skb)
3246{
3247 struct ieee80211_hw *hw = ar->hw;
3248 struct ieee80211_txq *txq;
3249 struct htt_resp *resp = (struct htt_resp *)skb->data;
3250 struct htt_tx_fetch_record *record;
3251 size_t len;
3252 size_t max_num_bytes;
3253 size_t max_num_msdus;
3254 size_t num_bytes;
3255 size_t num_msdus;
3256 const __le32 *resp_ids;
3257 u16 num_records;
3258 u16 num_resp_ids;
3259 u16 peer_id;
3260 u8 tid;
3261 int ret;
3262 int i;
3263 bool may_tx;
3264
3265 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind\n");
3266
3267 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_ind);
3268 if (unlikely(skb->len < len)) {
3269 ath10k_warn(ar, "received corrupted tx_fetch_ind event: buffer too short\n");
3270 return;
3271 }
3272
3273 num_records = le16_to_cpu(resp->tx_fetch_ind.num_records);
3274 num_resp_ids = le16_to_cpu(resp->tx_fetch_ind.num_resp_ids);
3275
3276 len += sizeof(resp->tx_fetch_ind.records[0]) * num_records;
3277 len += sizeof(resp->tx_fetch_ind.resp_ids[0]) * num_resp_ids;
3278
3279 if (unlikely(skb->len < len)) {
3280 ath10k_warn(ar, "received corrupted tx_fetch_ind event: too many records/resp_ids\n");
3281 return;
3282 }
3283
3284 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind num records %u num resps %u seq %u\n",
3285 num_records, num_resp_ids,
3286 le16_to_cpu(resp->tx_fetch_ind.fetch_seq_num));
3287
3288 if (!ar->htt.tx_q_state.enabled) {
3289 ath10k_warn(ar, "received unexpected tx_fetch_ind event: not enabled\n");
3290 return;
3291 }
3292
3293 if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH) {
3294 ath10k_warn(ar, "received unexpected tx_fetch_ind event: in push mode\n");
3295 return;
3296 }
3297
3298 rcu_read_lock();
3299
3300 for (i = 0; i < num_records; i++) {
3301 record = &resp->tx_fetch_ind.records[i];
3302 peer_id = MS(le16_to_cpu(record->info),
3303 HTT_TX_FETCH_RECORD_INFO_PEER_ID);
3304 tid = MS(le16_to_cpu(record->info),
3305 HTT_TX_FETCH_RECORD_INFO_TID);
3306 max_num_msdus = le16_to_cpu(record->num_msdus);
3307 max_num_bytes = le32_to_cpu(record->num_bytes);
3308
3309 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch record %i peer_id %u tid %u msdus %zu bytes %zu\n",
3310 i, peer_id, tid, max_num_msdus, max_num_bytes);
3311
3312 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
3313 unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
3314 ath10k_warn(ar, "received out of range peer_id %u tid %u\n",
3315 peer_id, tid);
3316 continue;
3317 }
3318
3319 spin_lock_bh(&ar->data_lock);
3320 txq = ath10k_mac_txq_lookup(ar, peer_id, tid);
3321 spin_unlock_bh(&ar->data_lock);
3322
3323 /* It is okay to release the lock and use txq because RCU read
3324 * lock is held.
3325 */
3326
3327 if (unlikely(!txq)) {
3328 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n",
3329 peer_id, tid);
3330 continue;
3331 }
3332
3333 num_msdus = 0;
3334 num_bytes = 0;
3335
3336 ieee80211_txq_schedule_start(hw, txq->ac);
3337 may_tx = ieee80211_txq_may_transmit(hw, txq);
3338 while (num_msdus < max_num_msdus &&
3339 num_bytes < max_num_bytes) {
3340 if (!may_tx)
3341 break;
3342
3343 ret = ath10k_mac_tx_push_txq(hw, txq);
3344 if (ret < 0)
3345 break;
3346
3347 num_msdus++;
3348 num_bytes += ret;
3349 }
3350 ieee80211_return_txq(hw, txq, false);
3351 ieee80211_txq_schedule_end(hw, txq->ac);
3352
3353 record->num_msdus = cpu_to_le16(num_msdus);
3354 record->num_bytes = cpu_to_le32(num_bytes);
3355
3356 ath10k_htt_tx_txq_recalc(hw, txq);
3357 }
3358
3359 rcu_read_unlock();
3360
3361 resp_ids = ath10k_htt_get_tx_fetch_ind_resp_ids(&resp->tx_fetch_ind);
3362 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, resp_ids, num_resp_ids);
3363
3364 ret = ath10k_htt_tx_fetch_resp(ar,
3365 resp->tx_fetch_ind.token,
3366 resp->tx_fetch_ind.fetch_seq_num,
3367 resp->tx_fetch_ind.records,
3368 num_records);
3369 if (unlikely(ret)) {
3370 ath10k_warn(ar, "failed to submit tx fetch resp for token 0x%08x: %d\n",
3371 le32_to_cpu(resp->tx_fetch_ind.token), ret);
3372 /* FIXME: request fw restart */
3373 }
3374
3375 ath10k_htt_tx_txq_sync(ar);
3376}
3377
3378static void ath10k_htt_rx_tx_fetch_confirm(struct ath10k *ar,
3379 struct sk_buff *skb)
3380{
3381 const struct htt_resp *resp = (void *)skb->data;
3382 size_t len;
3383 int num_resp_ids;
3384
3385 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm\n");
3386
3387 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_confirm);
3388 if (unlikely(skb->len < len)) {
3389 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: buffer too short\n");
3390 return;
3391 }
3392
3393 num_resp_ids = le16_to_cpu(resp->tx_fetch_confirm.num_resp_ids);
3394 len += sizeof(resp->tx_fetch_confirm.resp_ids[0]) * num_resp_ids;
3395
3396 if (unlikely(skb->len < len)) {
3397 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: resp_ids buffer overflow\n");
3398 return;
3399 }
3400
3401 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar,
3402 resp->tx_fetch_confirm.resp_ids,
3403 num_resp_ids);
3404}
3405
3406static void ath10k_htt_rx_tx_mode_switch_ind(struct ath10k *ar,
3407 struct sk_buff *skb)
3408{
3409 const struct htt_resp *resp = (void *)skb->data;
3410 const struct htt_tx_mode_switch_record *record;
3411 struct ieee80211_txq *txq;
3412 struct ath10k_txq *artxq;
3413 size_t len;
3414 size_t num_records;
3415 enum htt_tx_mode_switch_mode mode;
3416 bool enable;
3417 u16 info0;
3418 u16 info1;
3419 u16 threshold;
3420 u16 peer_id;
3421 u8 tid;
3422 int i;
3423
3424 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx mode switch ind\n");
3425
3426 len = sizeof(resp->hdr) + sizeof(resp->tx_mode_switch_ind);
3427 if (unlikely(skb->len < len)) {
3428 ath10k_warn(ar, "received corrupted tx_mode_switch_ind event: buffer too short\n");
3429 return;
3430 }
3431
3432 info0 = le16_to_cpu(resp->tx_mode_switch_ind.info0);
3433 info1 = le16_to_cpu(resp->tx_mode_switch_ind.info1);
3434
3435 enable = !!(info0 & HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE);
3436 num_records = MS(info0, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD);
3437 mode = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_MODE);
3438 threshold = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD);
3439
3440 ath10k_dbg(ar, ATH10K_DBG_HTT,
3441 "htt rx tx mode switch ind info0 0x%04hx info1 0x%04x enable %d num records %zd mode %d threshold %u\n",
3442 info0, info1, enable, num_records, mode, threshold);
3443
3444 len += sizeof(resp->tx_mode_switch_ind.records[0]) * num_records;
3445
3446 if (unlikely(skb->len < len)) {
3447 ath10k_warn(ar, "received corrupted tx_mode_switch_mode_ind event: too many records\n");
3448 return;
3449 }
3450
3451 switch (mode) {
3452 case HTT_TX_MODE_SWITCH_PUSH:
3453 case HTT_TX_MODE_SWITCH_PUSH_PULL:
3454 break;
3455 default:
3456 ath10k_warn(ar, "received invalid tx_mode_switch_mode_ind mode %d, ignoring\n",
3457 mode);
3458 return;
3459 }
3460
3461 if (!enable)
3462 return;
3463
3464 ar->htt.tx_q_state.enabled = enable;
3465 ar->htt.tx_q_state.mode = mode;
3466 ar->htt.tx_q_state.num_push_allowed = threshold;
3467
3468 rcu_read_lock();
3469
3470 for (i = 0; i < num_records; i++) {
3471 record = &resp->tx_mode_switch_ind.records[i];
3472 info0 = le16_to_cpu(record->info0);
3473 peer_id = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID);
3474 tid = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_TID);
3475
3476 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
3477 unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
3478 ath10k_warn(ar, "received out of range peer_id %u tid %u\n",
3479 peer_id, tid);
3480 continue;
3481 }
3482
3483 spin_lock_bh(&ar->data_lock);
3484 txq = ath10k_mac_txq_lookup(ar, peer_id, tid);
3485 spin_unlock_bh(&ar->data_lock);
3486
3487 /* It is okay to release the lock and use txq because RCU read
3488 * lock is held.
3489 */
3490
3491 if (unlikely(!txq)) {
3492 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n",
3493 peer_id, tid);
3494 continue;
3495 }
3496
3497 spin_lock_bh(&ar->htt.tx_lock);
3498 artxq = (void *)txq->drv_priv;
3499 artxq->num_push_allowed = le16_to_cpu(record->num_max_msdus);
3500 spin_unlock_bh(&ar->htt.tx_lock);
3501 }
3502
3503 rcu_read_unlock();
3504
3505 ath10k_mac_tx_push_pending(ar);
3506}
3507
3508void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
3509{
3510 bool release;
3511
3512 release = ath10k_htt_t2h_msg_handler(ar, skb);
3513
3514 /* Free the indication buffer */
3515 if (release)
3516 dev_kfree_skb_any(skb);
3517}
3518
3519static inline s8 ath10k_get_legacy_rate_idx(struct ath10k *ar, u8 rate)
3520{
3521 static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12,
3522 18, 24, 36, 48, 54};
3523 int i;
3524
3525 for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) {
3526 if (rate == legacy_rates[i])
3527 return i;
3528 }
3529
3530 ath10k_warn(ar, "Invalid legacy rate %d peer stats", rate);
3531 return -EINVAL;
3532}
3533
3534static void
3535ath10k_accumulate_per_peer_tx_stats(struct ath10k *ar,
3536 struct ath10k_sta *arsta,
3537 struct ath10k_per_peer_tx_stats *pstats,
3538 s8 legacy_rate_idx)
3539{
3540 struct rate_info *txrate = &arsta->txrate;
3541 struct ath10k_htt_tx_stats *tx_stats;
3542 int idx, ht_idx, gi, mcs, bw, nss;
3543 unsigned long flags;
3544
3545 if (!arsta->tx_stats)
3546 return;
3547
3548 tx_stats = arsta->tx_stats;
3549 flags = txrate->flags;
3550 gi = test_bit(ATH10K_RATE_INFO_FLAGS_SGI_BIT, &flags);
3551 mcs = ATH10K_HW_MCS_RATE(pstats->ratecode);
3552 bw = txrate->bw;
3553 nss = txrate->nss;
3554 ht_idx = mcs + (nss - 1) * 8;
3555 idx = mcs * 8 + 8 * 10 * (nss - 1);
3556 idx += bw * 2 + gi;
3557
3558#define STATS_OP_FMT(name) tx_stats->stats[ATH10K_STATS_TYPE_##name]
3559
3560 if (txrate->flags & RATE_INFO_FLAGS_VHT_MCS) {
3561 STATS_OP_FMT(SUCC).vht[0][mcs] += pstats->succ_bytes;
3562 STATS_OP_FMT(SUCC).vht[1][mcs] += pstats->succ_pkts;
3563 STATS_OP_FMT(FAIL).vht[0][mcs] += pstats->failed_bytes;
3564 STATS_OP_FMT(FAIL).vht[1][mcs] += pstats->failed_pkts;
3565 STATS_OP_FMT(RETRY).vht[0][mcs] += pstats->retry_bytes;
3566 STATS_OP_FMT(RETRY).vht[1][mcs] += pstats->retry_pkts;
3567 } else if (txrate->flags & RATE_INFO_FLAGS_MCS) {
3568 STATS_OP_FMT(SUCC).ht[0][ht_idx] += pstats->succ_bytes;
3569 STATS_OP_FMT(SUCC).ht[1][ht_idx] += pstats->succ_pkts;
3570 STATS_OP_FMT(FAIL).ht[0][ht_idx] += pstats->failed_bytes;
3571 STATS_OP_FMT(FAIL).ht[1][ht_idx] += pstats->failed_pkts;
3572 STATS_OP_FMT(RETRY).ht[0][ht_idx] += pstats->retry_bytes;
3573 STATS_OP_FMT(RETRY).ht[1][ht_idx] += pstats->retry_pkts;
3574 } else {
3575 mcs = legacy_rate_idx;
3576
3577 STATS_OP_FMT(SUCC).legacy[0][mcs] += pstats->succ_bytes;
3578 STATS_OP_FMT(SUCC).legacy[1][mcs] += pstats->succ_pkts;
3579 STATS_OP_FMT(FAIL).legacy[0][mcs] += pstats->failed_bytes;
3580 STATS_OP_FMT(FAIL).legacy[1][mcs] += pstats->failed_pkts;
3581 STATS_OP_FMT(RETRY).legacy[0][mcs] += pstats->retry_bytes;
3582 STATS_OP_FMT(RETRY).legacy[1][mcs] += pstats->retry_pkts;
3583 }
3584
3585 if (ATH10K_HW_AMPDU(pstats->flags)) {
3586 tx_stats->ba_fails += ATH10K_HW_BA_FAIL(pstats->flags);
3587
3588 if (txrate->flags & RATE_INFO_FLAGS_MCS) {
3589 STATS_OP_FMT(AMPDU).ht[0][ht_idx] +=
3590 pstats->succ_bytes + pstats->retry_bytes;
3591 STATS_OP_FMT(AMPDU).ht[1][ht_idx] +=
3592 pstats->succ_pkts + pstats->retry_pkts;
3593 } else {
3594 STATS_OP_FMT(AMPDU).vht[0][mcs] +=
3595 pstats->succ_bytes + pstats->retry_bytes;
3596 STATS_OP_FMT(AMPDU).vht[1][mcs] +=
3597 pstats->succ_pkts + pstats->retry_pkts;
3598 }
3599 STATS_OP_FMT(AMPDU).bw[0][bw] +=
3600 pstats->succ_bytes + pstats->retry_bytes;
3601 STATS_OP_FMT(AMPDU).nss[0][nss - 1] +=
3602 pstats->succ_bytes + pstats->retry_bytes;
3603 STATS_OP_FMT(AMPDU).gi[0][gi] +=
3604 pstats->succ_bytes + pstats->retry_bytes;
3605 STATS_OP_FMT(AMPDU).rate_table[0][idx] +=
3606 pstats->succ_bytes + pstats->retry_bytes;
3607 STATS_OP_FMT(AMPDU).bw[1][bw] +=
3608 pstats->succ_pkts + pstats->retry_pkts;
3609 STATS_OP_FMT(AMPDU).nss[1][nss - 1] +=
3610 pstats->succ_pkts + pstats->retry_pkts;
3611 STATS_OP_FMT(AMPDU).gi[1][gi] +=
3612 pstats->succ_pkts + pstats->retry_pkts;
3613 STATS_OP_FMT(AMPDU).rate_table[1][idx] +=
3614 pstats->succ_pkts + pstats->retry_pkts;
3615 } else {
3616 tx_stats->ack_fails +=
3617 ATH10K_HW_BA_FAIL(pstats->flags);
3618 }
3619
3620 STATS_OP_FMT(SUCC).bw[0][bw] += pstats->succ_bytes;
3621 STATS_OP_FMT(SUCC).nss[0][nss - 1] += pstats->succ_bytes;
3622 STATS_OP_FMT(SUCC).gi[0][gi] += pstats->succ_bytes;
3623
3624 STATS_OP_FMT(SUCC).bw[1][bw] += pstats->succ_pkts;
3625 STATS_OP_FMT(SUCC).nss[1][nss - 1] += pstats->succ_pkts;
3626 STATS_OP_FMT(SUCC).gi[1][gi] += pstats->succ_pkts;
3627
3628 STATS_OP_FMT(FAIL).bw[0][bw] += pstats->failed_bytes;
3629 STATS_OP_FMT(FAIL).nss[0][nss - 1] += pstats->failed_bytes;
3630 STATS_OP_FMT(FAIL).gi[0][gi] += pstats->failed_bytes;
3631
3632 STATS_OP_FMT(FAIL).bw[1][bw] += pstats->failed_pkts;
3633 STATS_OP_FMT(FAIL).nss[1][nss - 1] += pstats->failed_pkts;
3634 STATS_OP_FMT(FAIL).gi[1][gi] += pstats->failed_pkts;
3635
3636 STATS_OP_FMT(RETRY).bw[0][bw] += pstats->retry_bytes;
3637 STATS_OP_FMT(RETRY).nss[0][nss - 1] += pstats->retry_bytes;
3638 STATS_OP_FMT(RETRY).gi[0][gi] += pstats->retry_bytes;
3639
3640 STATS_OP_FMT(RETRY).bw[1][bw] += pstats->retry_pkts;
3641 STATS_OP_FMT(RETRY).nss[1][nss - 1] += pstats->retry_pkts;
3642 STATS_OP_FMT(RETRY).gi[1][gi] += pstats->retry_pkts;
3643
3644 if (txrate->flags >= RATE_INFO_FLAGS_MCS) {
3645 STATS_OP_FMT(SUCC).rate_table[0][idx] += pstats->succ_bytes;
3646 STATS_OP_FMT(SUCC).rate_table[1][idx] += pstats->succ_pkts;
3647 STATS_OP_FMT(FAIL).rate_table[0][idx] += pstats->failed_bytes;
3648 STATS_OP_FMT(FAIL).rate_table[1][idx] += pstats->failed_pkts;
3649 STATS_OP_FMT(RETRY).rate_table[0][idx] += pstats->retry_bytes;
3650 STATS_OP_FMT(RETRY).rate_table[1][idx] += pstats->retry_pkts;
3651 }
3652
3653 tx_stats->tx_duration += pstats->duration;
3654}
3655
3656static void
3657ath10k_update_per_peer_tx_stats(struct ath10k *ar,
3658 struct ieee80211_sta *sta,
3659 struct ath10k_per_peer_tx_stats *peer_stats)
3660{
3661 struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
3662 struct ieee80211_chanctx_conf *conf = NULL;
3663 u8 rate = 0, sgi;
3664 s8 rate_idx = 0;
3665 bool skip_auto_rate;
3666 struct rate_info txrate;
3667
3668 lockdep_assert_held(&ar->data_lock);
3669
3670 txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode);
3671 txrate.bw = ATH10K_HW_BW(peer_stats->flags);
3672 txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode);
3673 txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode);
3674 sgi = ATH10K_HW_GI(peer_stats->flags);
3675 skip_auto_rate = ATH10K_FW_SKIPPED_RATE_CTRL(peer_stats->flags);
3676
3677 /* Firmware's rate control skips broadcast/management frames,
3678 * if host has configure fixed rates and in some other special cases.
3679 */
3680 if (skip_auto_rate)
3681 return;
3682
3683 if (txrate.flags == WMI_RATE_PREAMBLE_VHT && txrate.mcs > 9) {
3684 ath10k_warn(ar, "Invalid VHT mcs %d peer stats", txrate.mcs);
3685 return;
3686 }
3687
3688 if (txrate.flags == WMI_RATE_PREAMBLE_HT &&
3689 (txrate.mcs > 7 || txrate.nss < 1)) {
3690 ath10k_warn(ar, "Invalid HT mcs %d nss %d peer stats",
3691 txrate.mcs, txrate.nss);
3692 return;
3693 }
3694
3695 memset(&arsta->txrate, 0, sizeof(arsta->txrate));
3696 memset(&arsta->tx_info.status, 0, sizeof(arsta->tx_info.status));
3697 if (txrate.flags == WMI_RATE_PREAMBLE_CCK ||
3698 txrate.flags == WMI_RATE_PREAMBLE_OFDM) {
3699 rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode);
3700 /* This is hacky, FW sends CCK rate 5.5Mbps as 6 */
3701 if (rate == 6 && txrate.flags == WMI_RATE_PREAMBLE_CCK)
3702 rate = 5;
3703 rate_idx = ath10k_get_legacy_rate_idx(ar, rate);
3704 if (rate_idx < 0)
3705 return;
3706 arsta->txrate.legacy = rate;
3707 } else if (txrate.flags == WMI_RATE_PREAMBLE_HT) {
3708 arsta->txrate.flags = RATE_INFO_FLAGS_MCS;
3709 arsta->txrate.mcs = txrate.mcs + 8 * (txrate.nss - 1);
3710 } else {
3711 arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS;
3712 arsta->txrate.mcs = txrate.mcs;
3713 }
3714
3715 switch (txrate.flags) {
3716 case WMI_RATE_PREAMBLE_OFDM:
3717 if (arsta->arvif && arsta->arvif->vif)
3718 conf = rcu_dereference(arsta->arvif->vif->chanctx_conf);
3719 if (conf && conf->def.chan->band == NL80211_BAND_5GHZ)
3720 arsta->tx_info.status.rates[0].idx = rate_idx - 4;
3721 break;
3722 case WMI_RATE_PREAMBLE_CCK:
3723 arsta->tx_info.status.rates[0].idx = rate_idx;
3724 if (sgi)
3725 arsta->tx_info.status.rates[0].flags |=
3726 (IEEE80211_TX_RC_USE_SHORT_PREAMBLE |
3727 IEEE80211_TX_RC_SHORT_GI);
3728 break;
3729 case WMI_RATE_PREAMBLE_HT:
3730 arsta->tx_info.status.rates[0].idx =
3731 txrate.mcs + ((txrate.nss - 1) * 8);
3732 if (sgi)
3733 arsta->tx_info.status.rates[0].flags |=
3734 IEEE80211_TX_RC_SHORT_GI;
3735 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_MCS;
3736 break;
3737 case WMI_RATE_PREAMBLE_VHT:
3738 ieee80211_rate_set_vht(&arsta->tx_info.status.rates[0],
3739 txrate.mcs, txrate.nss);
3740 if (sgi)
3741 arsta->tx_info.status.rates[0].flags |=
3742 IEEE80211_TX_RC_SHORT_GI;
3743 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_VHT_MCS;
3744 break;
3745 }
3746
3747 arsta->txrate.nss = txrate.nss;
3748 arsta->txrate.bw = ath10k_bw_to_mac80211_bw(txrate.bw);
3749 arsta->last_tx_bitrate = cfg80211_calculate_bitrate(&arsta->txrate);
3750 if (sgi)
3751 arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
3752
3753 switch (arsta->txrate.bw) {
3754 case RATE_INFO_BW_40:
3755 arsta->tx_info.status.rates[0].flags |=
3756 IEEE80211_TX_RC_40_MHZ_WIDTH;
3757 break;
3758 case RATE_INFO_BW_80:
3759 arsta->tx_info.status.rates[0].flags |=
3760 IEEE80211_TX_RC_80_MHZ_WIDTH;
3761 break;
3762 }
3763
3764 if (peer_stats->succ_pkts) {
3765 arsta->tx_info.flags = IEEE80211_TX_STAT_ACK;
3766 arsta->tx_info.status.rates[0].count = 1;
3767 ieee80211_tx_rate_update(ar->hw, sta, &arsta->tx_info);
3768 }
3769
3770 if (ar->htt.disable_tx_comp) {
3771 arsta->tx_failed += peer_stats->failed_pkts;
3772 ath10k_dbg(ar, ATH10K_DBG_HTT, "tx failed %d\n",
3773 arsta->tx_failed);
3774 }
3775
3776 arsta->tx_retries += peer_stats->retry_pkts;
3777 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx retries %d", arsta->tx_retries);
3778
3779 if (ath10k_debug_is_extd_tx_stats_enabled(ar))
3780 ath10k_accumulate_per_peer_tx_stats(ar, arsta, peer_stats,
3781 rate_idx);
3782}
3783
3784static void ath10k_htt_fetch_peer_stats(struct ath10k *ar,
3785 struct sk_buff *skb)
3786{
3787 struct htt_resp *resp = (struct htt_resp *)skb->data;
3788 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats;
3789 struct htt_per_peer_tx_stats_ind *tx_stats;
3790 struct ieee80211_sta *sta;
3791 struct ath10k_peer *peer;
3792 int peer_id, i;
3793 u8 ppdu_len, num_ppdu;
3794
3795 num_ppdu = resp->peer_tx_stats.num_ppdu;
3796 ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32);
3797
3798 if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) {
3799 ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len);
3800 return;
3801 }
3802
3803 tx_stats = (struct htt_per_peer_tx_stats_ind *)
3804 (resp->peer_tx_stats.payload);
3805 peer_id = __le16_to_cpu(tx_stats->peer_id);
3806
3807 rcu_read_lock();
3808 spin_lock_bh(&ar->data_lock);
3809 peer = ath10k_peer_find_by_id(ar, peer_id);
3810 if (!peer || !peer->sta) {
3811 ath10k_warn(ar, "Invalid peer id %d peer stats buffer\n",
3812 peer_id);
3813 goto out;
3814 }
3815
3816 sta = peer->sta;
3817 for (i = 0; i < num_ppdu; i++) {
3818 tx_stats = (struct htt_per_peer_tx_stats_ind *)
3819 (resp->peer_tx_stats.payload + i * ppdu_len);
3820
3821 p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes);
3822 p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes);
3823 p_tx_stats->failed_bytes =
3824 __le32_to_cpu(tx_stats->failed_bytes);
3825 p_tx_stats->ratecode = tx_stats->ratecode;
3826 p_tx_stats->flags = tx_stats->flags;
3827 p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts);
3828 p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts);
3829 p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts);
3830 p_tx_stats->duration = __le16_to_cpu(tx_stats->tx_duration);
3831
3832 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats);
3833 }
3834
3835out:
3836 spin_unlock_bh(&ar->data_lock);
3837 rcu_read_unlock();
3838}
3839
3840static void ath10k_fetch_10_2_tx_stats(struct ath10k *ar, u8 *data)
3841{
3842 struct ath10k_pktlog_hdr *hdr = (struct ath10k_pktlog_hdr *)data;
3843 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats;
3844 struct ath10k_10_2_peer_tx_stats *tx_stats;
3845 struct ieee80211_sta *sta;
3846 struct ath10k_peer *peer;
3847 u16 log_type = __le16_to_cpu(hdr->log_type);
3848 u32 peer_id = 0, i;
3849
3850 if (log_type != ATH_PKTLOG_TYPE_TX_STAT)
3851 return;
3852
3853 tx_stats = (struct ath10k_10_2_peer_tx_stats *)((hdr->payload) +
3854 ATH10K_10_2_TX_STATS_OFFSET);
3855
3856 if (!tx_stats->tx_ppdu_cnt)
3857 return;
3858
3859 peer_id = tx_stats->peer_id;
3860
3861 rcu_read_lock();
3862 spin_lock_bh(&ar->data_lock);
3863 peer = ath10k_peer_find_by_id(ar, peer_id);
3864 if (!peer || !peer->sta) {
3865 ath10k_warn(ar, "Invalid peer id %d in peer stats buffer\n",
3866 peer_id);
3867 goto out;
3868 }
3869
3870 sta = peer->sta;
3871 for (i = 0; i < tx_stats->tx_ppdu_cnt; i++) {
3872 p_tx_stats->succ_bytes =
3873 __le16_to_cpu(tx_stats->success_bytes[i]);
3874 p_tx_stats->retry_bytes =
3875 __le16_to_cpu(tx_stats->retry_bytes[i]);
3876 p_tx_stats->failed_bytes =
3877 __le16_to_cpu(tx_stats->failed_bytes[i]);
3878 p_tx_stats->ratecode = tx_stats->ratecode[i];
3879 p_tx_stats->flags = tx_stats->flags[i];
3880 p_tx_stats->succ_pkts = tx_stats->success_pkts[i];
3881 p_tx_stats->retry_pkts = tx_stats->retry_pkts[i];
3882 p_tx_stats->failed_pkts = tx_stats->failed_pkts[i];
3883
3884 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats);
3885 }
3886 spin_unlock_bh(&ar->data_lock);
3887 rcu_read_unlock();
3888
3889 return;
3890
3891out:
3892 spin_unlock_bh(&ar->data_lock);
3893 rcu_read_unlock();
3894}
3895
3896static int ath10k_htt_rx_pn_len(enum htt_security_types sec_type)
3897{
3898 switch (sec_type) {
3899 case HTT_SECURITY_TKIP:
3900 case HTT_SECURITY_TKIP_NOMIC:
3901 case HTT_SECURITY_AES_CCMP:
3902 return 48;
3903 default:
3904 return 0;
3905 }
3906}
3907
3908static void ath10k_htt_rx_sec_ind_handler(struct ath10k *ar,
3909 struct htt_security_indication *ev)
3910{
3911 enum htt_txrx_sec_cast_type sec_index;
3912 enum htt_security_types sec_type;
3913 struct ath10k_peer *peer;
3914
3915 spin_lock_bh(&ar->data_lock);
3916
3917 peer = ath10k_peer_find_by_id(ar, __le16_to_cpu(ev->peer_id));
3918 if (!peer) {
3919 ath10k_warn(ar, "failed to find peer id %d for security indication",
3920 __le16_to_cpu(ev->peer_id));
3921 goto out;
3922 }
3923
3924 sec_type = MS(ev->flags, HTT_SECURITY_TYPE);
3925
3926 if (ev->flags & HTT_SECURITY_IS_UNICAST)
3927 sec_index = HTT_TXRX_SEC_UCAST;
3928 else
3929 sec_index = HTT_TXRX_SEC_MCAST;
3930
3931 peer->rx_pn[sec_index].sec_type = sec_type;
3932 peer->rx_pn[sec_index].pn_len = ath10k_htt_rx_pn_len(sec_type);
3933
3934 memset(peer->tids_last_pn_valid, 0, sizeof(peer->tids_last_pn_valid));
3935 memset(peer->tids_last_pn, 0, sizeof(peer->tids_last_pn));
3936
3937out:
3938 spin_unlock_bh(&ar->data_lock);
3939}
3940
3941bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
3942{
3943 struct ath10k_htt *htt = &ar->htt;
3944 struct htt_resp *resp = (struct htt_resp *)skb->data;
3945 enum htt_t2h_msg_type type;
3946
3947 /* confirm alignment */
3948 if (!IS_ALIGNED((unsigned long)skb->data, 4))
3949 ath10k_warn(ar, "unaligned htt message, expect trouble\n");
3950
3951 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, msg_type: 0x%0X\n",
3952 resp->hdr.msg_type);
3953
3954 if (resp->hdr.msg_type >= ar->htt.t2h_msg_types_max) {
3955 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X",
3956 resp->hdr.msg_type, ar->htt.t2h_msg_types_max);
3957 return true;
3958 }
3959 type = ar->htt.t2h_msg_types[resp->hdr.msg_type];
3960
3961 switch (type) {
3962 case HTT_T2H_MSG_TYPE_VERSION_CONF: {
3963 htt->target_version_major = resp->ver_resp.major;
3964 htt->target_version_minor = resp->ver_resp.minor;
3965 complete(&htt->target_version_received);
3966 break;
3967 }
3968 case HTT_T2H_MSG_TYPE_RX_IND:
3969 if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) {
3970 ath10k_htt_rx_proc_rx_ind_ll(htt, &resp->rx_ind);
3971 } else {
3972 skb_queue_tail(&htt->rx_indication_head, skb);
3973 return false;
3974 }
3975 break;
3976 case HTT_T2H_MSG_TYPE_PEER_MAP: {
3977 struct htt_peer_map_event ev = {
3978 .vdev_id = resp->peer_map.vdev_id,
3979 .peer_id = __le16_to_cpu(resp->peer_map.peer_id),
3980 };
3981 memcpy(ev.addr, resp->peer_map.addr, sizeof(ev.addr));
3982 ath10k_peer_map_event(htt, &ev);
3983 break;
3984 }
3985 case HTT_T2H_MSG_TYPE_PEER_UNMAP: {
3986 struct htt_peer_unmap_event ev = {
3987 .peer_id = __le16_to_cpu(resp->peer_unmap.peer_id),
3988 };
3989 ath10k_peer_unmap_event(htt, &ev);
3990 break;
3991 }
3992 case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION: {
3993 struct htt_tx_done tx_done = {};
3994 struct ath10k_htt *htt = &ar->htt;
3995 struct ath10k_htc *htc = &ar->htc;
3996 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid];
3997 int status = __le32_to_cpu(resp->mgmt_tx_completion.status);
3998 int info = __le32_to_cpu(resp->mgmt_tx_completion.info);
3999
4000 tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id);
4001
4002 switch (status) {
4003 case HTT_MGMT_TX_STATUS_OK:
4004 tx_done.status = HTT_TX_COMPL_STATE_ACK;
4005 if (test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS,
4006 ar->wmi.svc_map) &&
4007 (resp->mgmt_tx_completion.flags &
4008 HTT_MGMT_TX_CMPL_FLAG_ACK_RSSI)) {
4009 tx_done.ack_rssi =
4010 FIELD_GET(HTT_MGMT_TX_CMPL_INFO_ACK_RSSI_MASK,
4011 info);
4012 }
4013 break;
4014 case HTT_MGMT_TX_STATUS_RETRY:
4015 tx_done.status = HTT_TX_COMPL_STATE_NOACK;
4016 break;
4017 case HTT_MGMT_TX_STATUS_DROP:
4018 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
4019 break;
4020 }
4021
4022 if (htt->disable_tx_comp) {
4023 spin_lock_bh(&htc->tx_lock);
4024 ep->tx_credits++;
4025 spin_unlock_bh(&htc->tx_lock);
4026 }
4027
4028 status = ath10k_txrx_tx_unref(htt, &tx_done);
4029 if (!status) {
4030 spin_lock_bh(&htt->tx_lock);
4031 ath10k_htt_tx_mgmt_dec_pending(htt);
4032 spin_unlock_bh(&htt->tx_lock);
4033 }
4034 break;
4035 }
4036 case HTT_T2H_MSG_TYPE_TX_COMPL_IND:
4037 ath10k_htt_rx_tx_compl_ind(htt->ar, skb);
4038 break;
4039 case HTT_T2H_MSG_TYPE_SEC_IND: {
4040 struct ath10k *ar = htt->ar;
4041 struct htt_security_indication *ev = &resp->security_indication;
4042
4043 ath10k_htt_rx_sec_ind_handler(ar, ev);
4044 ath10k_dbg(ar, ATH10K_DBG_HTT,
4045 "sec ind peer_id %d unicast %d type %d\n",
4046 __le16_to_cpu(ev->peer_id),
4047 !!(ev->flags & HTT_SECURITY_IS_UNICAST),
4048 MS(ev->flags, HTT_SECURITY_TYPE));
4049 complete(&ar->install_key_done);
4050 break;
4051 }
4052 case HTT_T2H_MSG_TYPE_RX_FRAG_IND: {
4053 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
4054 skb->data, skb->len);
4055 atomic_inc(&htt->num_mpdus_ready);
4056
4057 return ath10k_htt_rx_proc_rx_frag_ind(htt,
4058 &resp->rx_frag_ind,
4059 skb);
4060 }
4061 case HTT_T2H_MSG_TYPE_TEST:
4062 break;
4063 case HTT_T2H_MSG_TYPE_STATS_CONF:
4064 trace_ath10k_htt_stats(ar, skb->data, skb->len);
4065 break;
4066 case HTT_T2H_MSG_TYPE_TX_INSPECT_IND:
4067 /* Firmware can return tx frames if it's unable to fully
4068 * process them and suspects host may be able to fix it. ath10k
4069 * sends all tx frames as already inspected so this shouldn't
4070 * happen unless fw has a bug.
4071 */
4072 ath10k_warn(ar, "received an unexpected htt tx inspect event\n");
4073 break;
4074 case HTT_T2H_MSG_TYPE_RX_ADDBA:
4075 ath10k_htt_rx_addba(ar, resp);
4076 break;
4077 case HTT_T2H_MSG_TYPE_RX_DELBA:
4078 ath10k_htt_rx_delba(ar, resp);
4079 break;
4080 case HTT_T2H_MSG_TYPE_PKTLOG: {
4081 trace_ath10k_htt_pktlog(ar, resp->pktlog_msg.payload,
4082 skb->len -
4083 offsetof(struct htt_resp,
4084 pktlog_msg.payload));
4085
4086 if (ath10k_peer_stats_enabled(ar))
4087 ath10k_fetch_10_2_tx_stats(ar,
4088 resp->pktlog_msg.payload);
4089 break;
4090 }
4091 case HTT_T2H_MSG_TYPE_RX_FLUSH: {
4092 /* Ignore this event because mac80211 takes care of Rx
4093 * aggregation reordering.
4094 */
4095 break;
4096 }
4097 case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: {
4098 skb_queue_tail(&htt->rx_in_ord_compl_q, skb);
4099 return false;
4100 }
4101 case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: {
4102 struct ath10k_htt *htt = &ar->htt;
4103 struct ath10k_htc *htc = &ar->htc;
4104 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid];
4105 u32 msg_word = __le32_to_cpu(*(__le32 *)resp);
4106 int htt_credit_delta;
4107
4108 htt_credit_delta = HTT_TX_CREDIT_DELTA_ABS_GET(msg_word);
4109 if (HTT_TX_CREDIT_SIGN_BIT_GET(msg_word))
4110 htt_credit_delta = -htt_credit_delta;
4111
4112 ath10k_dbg(ar, ATH10K_DBG_HTT,
4113 "htt credit update delta %d\n",
4114 htt_credit_delta);
4115
4116 if (htt->disable_tx_comp) {
4117 spin_lock_bh(&htc->tx_lock);
4118 ep->tx_credits += htt_credit_delta;
4119 spin_unlock_bh(&htc->tx_lock);
4120 ath10k_dbg(ar, ATH10K_DBG_HTT,
4121 "htt credit total %d\n",
4122 ep->tx_credits);
4123 ep->ep_ops.ep_tx_credits(htc->ar);
4124 }
4125 break;
4126 }
4127 case HTT_T2H_MSG_TYPE_CHAN_CHANGE: {
4128 u32 phymode = __le32_to_cpu(resp->chan_change.phymode);
4129 u32 freq = __le32_to_cpu(resp->chan_change.freq);
4130
4131 ar->tgt_oper_chan = ieee80211_get_channel(ar->hw->wiphy, freq);
4132 ath10k_dbg(ar, ATH10K_DBG_HTT,
4133 "htt chan change freq %u phymode %s\n",
4134 freq, ath10k_wmi_phymode_str(phymode));
4135 break;
4136 }
4137 case HTT_T2H_MSG_TYPE_AGGR_CONF:
4138 break;
4139 case HTT_T2H_MSG_TYPE_TX_FETCH_IND: {
4140 struct sk_buff *tx_fetch_ind = skb_copy(skb, GFP_ATOMIC);
4141
4142 if (!tx_fetch_ind) {
4143 ath10k_warn(ar, "failed to copy htt tx fetch ind\n");
4144 break;
4145 }
4146 skb_queue_tail(&htt->tx_fetch_ind_q, tx_fetch_ind);
4147 break;
4148 }
4149 case HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM:
4150 ath10k_htt_rx_tx_fetch_confirm(ar, skb);
4151 break;
4152 case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND:
4153 ath10k_htt_rx_tx_mode_switch_ind(ar, skb);
4154 break;
4155 case HTT_T2H_MSG_TYPE_PEER_STATS:
4156 ath10k_htt_fetch_peer_stats(ar, skb);
4157 break;
4158 case HTT_T2H_MSG_TYPE_EN_STATS:
4159 default:
4160 ath10k_warn(ar, "htt event (%d) not handled\n",
4161 resp->hdr.msg_type);
4162 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
4163 skb->data, skb->len);
4164 break;
4165 }
4166 return true;
4167}
4168EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler);
4169
4170void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar,
4171 struct sk_buff *skb)
4172{
4173 trace_ath10k_htt_pktlog(ar, skb->data, skb->len);
4174 dev_kfree_skb_any(skb);
4175}
4176EXPORT_SYMBOL(ath10k_htt_rx_pktlog_completion_handler);
4177
4178static int ath10k_htt_rx_deliver_msdu(struct ath10k *ar, int quota, int budget)
4179{
4180 struct sk_buff *skb;
4181
4182 while (quota < budget) {
4183 if (skb_queue_empty(&ar->htt.rx_msdus_q))
4184 break;
4185
4186 skb = skb_dequeue(&ar->htt.rx_msdus_q);
4187 if (!skb)
4188 break;
4189 ath10k_process_rx(ar, skb);
4190 quota++;
4191 }
4192
4193 return quota;
4194}
4195
4196int ath10k_htt_rx_hl_indication(struct ath10k *ar, int budget)
4197{
4198 struct htt_resp *resp;
4199 struct ath10k_htt *htt = &ar->htt;
4200 struct sk_buff *skb;
4201 bool release;
4202 int quota;
4203
4204 for (quota = 0; quota < budget; quota++) {
4205 skb = skb_dequeue(&htt->rx_indication_head);
4206 if (!skb)
4207 break;
4208
4209 resp = (struct htt_resp *)skb->data;
4210
4211 release = ath10k_htt_rx_proc_rx_ind_hl(htt,
4212 &resp->rx_ind_hl,
4213 skb,
4214 HTT_RX_PN_CHECK,
4215 HTT_RX_NON_TKIP_MIC);
4216
4217 if (release)
4218 dev_kfree_skb_any(skb);
4219
4220 ath10k_dbg(ar, ATH10K_DBG_HTT, "rx indication poll pending count:%d\n",
4221 skb_queue_len(&htt->rx_indication_head));
4222 }
4223 return quota;
4224}
4225EXPORT_SYMBOL(ath10k_htt_rx_hl_indication);
4226
4227int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget)
4228{
4229 struct ath10k_htt *htt = &ar->htt;
4230 struct htt_tx_done tx_done = {};
4231 struct sk_buff_head tx_ind_q;
4232 struct sk_buff *skb;
4233 unsigned long flags;
4234 int quota = 0, done, ret;
4235 bool resched_napi = false;
4236
4237 __skb_queue_head_init(&tx_ind_q);
4238
4239 /* Process pending frames before dequeuing more data
4240 * from hardware.
4241 */
4242 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget);
4243 if (quota == budget) {
4244 resched_napi = true;
4245 goto exit;
4246 }
4247
4248 while ((skb = skb_dequeue(&htt->rx_in_ord_compl_q))) {
4249 spin_lock_bh(&htt->rx_ring.lock);
4250 ret = ath10k_htt_rx_in_ord_ind(ar, skb);
4251 spin_unlock_bh(&htt->rx_ring.lock);
4252
4253 dev_kfree_skb_any(skb);
4254 if (ret == -EIO) {
4255 resched_napi = true;
4256 goto exit;
4257 }
4258 }
4259
4260 while (atomic_read(&htt->num_mpdus_ready)) {
4261 ret = ath10k_htt_rx_handle_amsdu(htt);
4262 if (ret == -EIO) {
4263 resched_napi = true;
4264 goto exit;
4265 }
4266 atomic_dec(&htt->num_mpdus_ready);
4267 }
4268
4269 /* Deliver received data after processing data from hardware */
4270 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget);
4271
4272 /* From NAPI documentation:
4273 * The napi poll() function may also process TX completions, in which
4274 * case if it processes the entire TX ring then it should count that
4275 * work as the rest of the budget.
4276 */
4277 if ((quota < budget) && !kfifo_is_empty(&htt->txdone_fifo))
4278 quota = budget;
4279
4280 /* kfifo_get: called only within txrx_tasklet so it's neatly serialized.
4281 * From kfifo_get() documentation:
4282 * Note that with only one concurrent reader and one concurrent writer,
4283 * you don't need extra locking to use these macro.
4284 */
4285 while (kfifo_get(&htt->txdone_fifo, &tx_done))
4286 ath10k_txrx_tx_unref(htt, &tx_done);
4287
4288 ath10k_mac_tx_push_pending(ar);
4289
4290 spin_lock_irqsave(&htt->tx_fetch_ind_q.lock, flags);
4291 skb_queue_splice_init(&htt->tx_fetch_ind_q, &tx_ind_q);
4292 spin_unlock_irqrestore(&htt->tx_fetch_ind_q.lock, flags);
4293
4294 while ((skb = __skb_dequeue(&tx_ind_q))) {
4295 ath10k_htt_rx_tx_fetch_ind(ar, skb);
4296 dev_kfree_skb_any(skb);
4297 }
4298
4299exit:
4300 ath10k_htt_rx_msdu_buff_replenish(htt);
4301 /* In case of rx failure or more data to read, report budget
4302 * to reschedule NAPI poll
4303 */
4304 done = resched_napi ? budget : quota;
4305
4306 return done;
4307}
4308EXPORT_SYMBOL(ath10k_htt_txrx_compl_task);
4309
4310static const struct ath10k_htt_rx_ops htt_rx_ops_32 = {
4311 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_32,
4312 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_32,
4313 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_32,
4314 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_32,
4315 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_32,
4316};
4317
4318static const struct ath10k_htt_rx_ops htt_rx_ops_64 = {
4319 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_64,
4320 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_64,
4321 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_64,
4322 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_64,
4323 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_64,
4324};
4325
4326static const struct ath10k_htt_rx_ops htt_rx_ops_hl = {
4327 .htt_rx_proc_rx_frag_ind = ath10k_htt_rx_proc_rx_frag_ind_hl,
4328};
4329
4330void ath10k_htt_set_rx_ops(struct ath10k_htt *htt)
4331{
4332 struct ath10k *ar = htt->ar;
4333
4334 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
4335 htt->rx_ops = &htt_rx_ops_hl;
4336 else if (ar->hw_params.target_64bit)
4337 htt->rx_ops = &htt_rx_ops_64;
4338 else
4339 htt->rx_ops = &htt_rx_ops_32;
4340}