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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
24/* shortcut to interpret a raw memory buffer as a rx descriptor */
25#define HTT_RX_BUF_TO_RX_DESC(hw, buf) ath10k_htt_rx_desc_from_raw_buffer(hw, buf)
26
27static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb);
28
29static struct sk_buff *
30ath10k_htt_rx_find_skb_paddr(struct ath10k *ar, u64 paddr)
31{
32 struct ath10k_skb_rxcb *rxcb;
33
34 hash_for_each_possible(ar->htt.rx_ring.skb_table, rxcb, hlist, paddr)
35 if (rxcb->paddr == paddr)
36 return ATH10K_RXCB_SKB(rxcb);
37
38 WARN_ON_ONCE(1);
39 return NULL;
40}
41
42static void ath10k_htt_rx_ring_free(struct ath10k_htt *htt)
43{
44 struct sk_buff *skb;
45 struct ath10k_skb_rxcb *rxcb;
46 struct hlist_node *n;
47 int i;
48
49 if (htt->rx_ring.in_ord_rx) {
50 hash_for_each_safe(htt->rx_ring.skb_table, i, n, rxcb, hlist) {
51 skb = ATH10K_RXCB_SKB(rxcb);
52 dma_unmap_single(htt->ar->dev, rxcb->paddr,
53 skb->len + skb_tailroom(skb),
54 DMA_FROM_DEVICE);
55 hash_del(&rxcb->hlist);
56 dev_kfree_skb_any(skb);
57 }
58 } else {
59 for (i = 0; i < htt->rx_ring.size; i++) {
60 skb = htt->rx_ring.netbufs_ring[i];
61 if (!skb)
62 continue;
63
64 rxcb = ATH10K_SKB_RXCB(skb);
65 dma_unmap_single(htt->ar->dev, rxcb->paddr,
66 skb->len + skb_tailroom(skb),
67 DMA_FROM_DEVICE);
68 dev_kfree_skb_any(skb);
69 }
70 }
71
72 htt->rx_ring.fill_cnt = 0;
73 hash_init(htt->rx_ring.skb_table);
74 memset(htt->rx_ring.netbufs_ring, 0,
75 htt->rx_ring.size * sizeof(htt->rx_ring.netbufs_ring[0]));
76}
77
78static size_t ath10k_htt_get_rx_ring_size_32(struct ath10k_htt *htt)
79{
80 return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_32);
81}
82
83static size_t ath10k_htt_get_rx_ring_size_64(struct ath10k_htt *htt)
84{
85 return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_64);
86}
87
88static void ath10k_htt_config_paddrs_ring_32(struct ath10k_htt *htt,
89 void *vaddr)
90{
91 htt->rx_ring.paddrs_ring_32 = vaddr;
92}
93
94static void ath10k_htt_config_paddrs_ring_64(struct ath10k_htt *htt,
95 void *vaddr)
96{
97 htt->rx_ring.paddrs_ring_64 = vaddr;
98}
99
100static void ath10k_htt_set_paddrs_ring_32(struct ath10k_htt *htt,
101 dma_addr_t paddr, int idx)
102{
103 htt->rx_ring.paddrs_ring_32[idx] = __cpu_to_le32(paddr);
104}
105
106static void ath10k_htt_set_paddrs_ring_64(struct ath10k_htt *htt,
107 dma_addr_t paddr, int idx)
108{
109 htt->rx_ring.paddrs_ring_64[idx] = __cpu_to_le64(paddr);
110}
111
112static void ath10k_htt_reset_paddrs_ring_32(struct ath10k_htt *htt, int idx)
113{
114 htt->rx_ring.paddrs_ring_32[idx] = 0;
115}
116
117static void ath10k_htt_reset_paddrs_ring_64(struct ath10k_htt *htt, int idx)
118{
119 htt->rx_ring.paddrs_ring_64[idx] = 0;
120}
121
122static void *ath10k_htt_get_vaddr_ring_32(struct ath10k_htt *htt)
123{
124 return (void *)htt->rx_ring.paddrs_ring_32;
125}
126
127static void *ath10k_htt_get_vaddr_ring_64(struct ath10k_htt *htt)
128{
129 return (void *)htt->rx_ring.paddrs_ring_64;
130}
131
132static int __ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num)
133{
134 struct ath10k_hw_params *hw = &htt->ar->hw_params;
135 struct htt_rx_desc *rx_desc;
136 struct ath10k_skb_rxcb *rxcb;
137 struct sk_buff *skb;
138 dma_addr_t paddr;
139 int ret = 0, idx;
140
141 /* The Full Rx Reorder firmware has no way of telling the host
142 * implicitly when it copied HTT Rx Ring buffers to MAC Rx Ring.
143 * To keep things simple make sure ring is always half empty. This
144 * guarantees there'll be no replenishment overruns possible.
145 */
146 BUILD_BUG_ON(HTT_RX_RING_FILL_LEVEL >= HTT_RX_RING_SIZE / 2);
147
148 idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr);
149
150 if (idx < 0 || idx >= htt->rx_ring.size) {
151 ath10k_err(htt->ar, "rx ring index is not valid, firmware malfunctioning?\n");
152 idx &= htt->rx_ring.size_mask;
153 ret = -ENOMEM;
154 goto fail;
155 }
156
157 while (num > 0) {
158 skb = dev_alloc_skb(HTT_RX_BUF_SIZE + HTT_RX_DESC_ALIGN);
159 if (!skb) {
160 ret = -ENOMEM;
161 goto fail;
162 }
163
164 if (!IS_ALIGNED((unsigned long)skb->data, HTT_RX_DESC_ALIGN))
165 skb_pull(skb,
166 PTR_ALIGN(skb->data, HTT_RX_DESC_ALIGN) -
167 skb->data);
168
169 /* Clear rx_desc attention word before posting to Rx ring */
170 rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, skb->data);
171 ath10k_htt_rx_desc_get_attention(hw, rx_desc)->flags = __cpu_to_le32(0);
172
173 paddr = dma_map_single(htt->ar->dev, skb->data,
174 skb->len + skb_tailroom(skb),
175 DMA_FROM_DEVICE);
176
177 if (unlikely(dma_mapping_error(htt->ar->dev, paddr))) {
178 dev_kfree_skb_any(skb);
179 ret = -ENOMEM;
180 goto fail;
181 }
182
183 rxcb = ATH10K_SKB_RXCB(skb);
184 rxcb->paddr = paddr;
185 htt->rx_ring.netbufs_ring[idx] = skb;
186 ath10k_htt_set_paddrs_ring(htt, paddr, idx);
187 htt->rx_ring.fill_cnt++;
188
189 if (htt->rx_ring.in_ord_rx) {
190 hash_add(htt->rx_ring.skb_table,
191 &ATH10K_SKB_RXCB(skb)->hlist,
192 paddr);
193 }
194
195 num--;
196 idx++;
197 idx &= htt->rx_ring.size_mask;
198 }
199
200fail:
201 /*
202 * Make sure the rx buffer is updated before available buffer
203 * index to avoid any potential rx ring corruption.
204 */
205 mb();
206 *htt->rx_ring.alloc_idx.vaddr = __cpu_to_le32(idx);
207 return ret;
208}
209
210static int ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num)
211{
212 lockdep_assert_held(&htt->rx_ring.lock);
213 return __ath10k_htt_rx_ring_fill_n(htt, num);
214}
215
216static void ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt *htt)
217{
218 int ret, num_deficit, num_to_fill;
219
220 /* Refilling the whole RX ring buffer proves to be a bad idea. The
221 * reason is RX may take up significant amount of CPU cycles and starve
222 * other tasks, e.g. TX on an ethernet device while acting as a bridge
223 * with ath10k wlan interface. This ended up with very poor performance
224 * once CPU the host system was overwhelmed with RX on ath10k.
225 *
226 * By limiting the number of refills the replenishing occurs
227 * progressively. This in turns makes use of the fact tasklets are
228 * processed in FIFO order. This means actual RX processing can starve
229 * out refilling. If there's not enough buffers on RX ring FW will not
230 * report RX until it is refilled with enough buffers. This
231 * automatically balances load wrt to CPU power.
232 *
233 * This probably comes at a cost of lower maximum throughput but
234 * improves the average and stability.
235 */
236 spin_lock_bh(&htt->rx_ring.lock);
237 num_deficit = htt->rx_ring.fill_level - htt->rx_ring.fill_cnt;
238 num_to_fill = min(ATH10K_HTT_MAX_NUM_REFILL, num_deficit);
239 num_deficit -= num_to_fill;
240 ret = ath10k_htt_rx_ring_fill_n(htt, num_to_fill);
241 if (ret == -ENOMEM) {
242 /*
243 * Failed to fill it to the desired level -
244 * we'll start a timer and try again next time.
245 * As long as enough buffers are left in the ring for
246 * another A-MPDU rx, no special recovery is needed.
247 */
248 mod_timer(&htt->rx_ring.refill_retry_timer, jiffies +
249 msecs_to_jiffies(HTT_RX_RING_REFILL_RETRY_MS));
250 } else if (num_deficit > 0) {
251 mod_timer(&htt->rx_ring.refill_retry_timer, jiffies +
252 msecs_to_jiffies(HTT_RX_RING_REFILL_RESCHED_MS));
253 }
254 spin_unlock_bh(&htt->rx_ring.lock);
255}
256
257static void ath10k_htt_rx_ring_refill_retry(struct timer_list *t)
258{
259 struct ath10k_htt *htt = from_timer(htt, t, rx_ring.refill_retry_timer);
260
261 ath10k_htt_rx_msdu_buff_replenish(htt);
262}
263
264int ath10k_htt_rx_ring_refill(struct ath10k *ar)
265{
266 struct ath10k_htt *htt = &ar->htt;
267 int ret;
268
269 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
270 return 0;
271
272 spin_lock_bh(&htt->rx_ring.lock);
273 ret = ath10k_htt_rx_ring_fill_n(htt, (htt->rx_ring.fill_level -
274 htt->rx_ring.fill_cnt));
275
276 if (ret)
277 ath10k_htt_rx_ring_free(htt);
278
279 spin_unlock_bh(&htt->rx_ring.lock);
280
281 return ret;
282}
283
284void ath10k_htt_rx_free(struct ath10k_htt *htt)
285{
286 if (htt->ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
287 return;
288
289 del_timer_sync(&htt->rx_ring.refill_retry_timer);
290
291 skb_queue_purge(&htt->rx_msdus_q);
292 skb_queue_purge(&htt->rx_in_ord_compl_q);
293 skb_queue_purge(&htt->tx_fetch_ind_q);
294
295 spin_lock_bh(&htt->rx_ring.lock);
296 ath10k_htt_rx_ring_free(htt);
297 spin_unlock_bh(&htt->rx_ring.lock);
298
299 dma_free_coherent(htt->ar->dev,
300 ath10k_htt_get_rx_ring_size(htt),
301 ath10k_htt_get_vaddr_ring(htt),
302 htt->rx_ring.base_paddr);
303
304 ath10k_htt_config_paddrs_ring(htt, NULL);
305
306 dma_free_coherent(htt->ar->dev,
307 sizeof(*htt->rx_ring.alloc_idx.vaddr),
308 htt->rx_ring.alloc_idx.vaddr,
309 htt->rx_ring.alloc_idx.paddr);
310 htt->rx_ring.alloc_idx.vaddr = NULL;
311
312 kfree(htt->rx_ring.netbufs_ring);
313 htt->rx_ring.netbufs_ring = NULL;
314}
315
316static inline struct sk_buff *ath10k_htt_rx_netbuf_pop(struct ath10k_htt *htt)
317{
318 struct ath10k *ar = htt->ar;
319 int idx;
320 struct sk_buff *msdu;
321
322 lockdep_assert_held(&htt->rx_ring.lock);
323
324 if (htt->rx_ring.fill_cnt == 0) {
325 ath10k_warn(ar, "tried to pop sk_buff from an empty rx ring\n");
326 return NULL;
327 }
328
329 idx = htt->rx_ring.sw_rd_idx.msdu_payld;
330 msdu = htt->rx_ring.netbufs_ring[idx];
331 htt->rx_ring.netbufs_ring[idx] = NULL;
332 ath10k_htt_reset_paddrs_ring(htt, idx);
333
334 idx++;
335 idx &= htt->rx_ring.size_mask;
336 htt->rx_ring.sw_rd_idx.msdu_payld = idx;
337 htt->rx_ring.fill_cnt--;
338
339 dma_unmap_single(htt->ar->dev,
340 ATH10K_SKB_RXCB(msdu)->paddr,
341 msdu->len + skb_tailroom(msdu),
342 DMA_FROM_DEVICE);
343 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ",
344 msdu->data, msdu->len + skb_tailroom(msdu));
345
346 return msdu;
347}
348
349/* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */
350static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
351 struct sk_buff_head *amsdu)
352{
353 struct ath10k *ar = htt->ar;
354 struct ath10k_hw_params *hw = &ar->hw_params;
355 int msdu_len, msdu_chaining = 0;
356 struct sk_buff *msdu;
357 struct htt_rx_desc *rx_desc;
358 struct rx_attention *rx_desc_attention;
359 struct rx_frag_info_common *rx_desc_frag_info_common;
360 struct rx_msdu_start_common *rx_desc_msdu_start_common;
361 struct rx_msdu_end_common *rx_desc_msdu_end_common;
362
363 lockdep_assert_held(&htt->rx_ring.lock);
364
365 for (;;) {
366 int last_msdu, msdu_len_invalid, msdu_chained;
367
368 msdu = ath10k_htt_rx_netbuf_pop(htt);
369 if (!msdu) {
370 __skb_queue_purge(amsdu);
371 return -ENOENT;
372 }
373
374 __skb_queue_tail(amsdu, msdu);
375
376 rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
377 rx_desc_attention = ath10k_htt_rx_desc_get_attention(hw, rx_desc);
378 rx_desc_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw,
379 rx_desc);
380 rx_desc_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rx_desc);
381 rx_desc_frag_info_common = ath10k_htt_rx_desc_get_frag_info(hw, rx_desc);
382
383 /* FIXME: we must report msdu payload since this is what caller
384 * expects now
385 */
386 skb_put(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset);
387 skb_pull(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset);
388
389 /*
390 * Sanity check - confirm the HW is finished filling in the
391 * rx data.
392 * If the HW and SW are working correctly, then it's guaranteed
393 * that the HW's MAC DMA is done before this point in the SW.
394 * To prevent the case that we handle a stale Rx descriptor,
395 * just assert for now until we have a way to recover.
396 */
397 if (!(__le32_to_cpu(rx_desc_attention->flags)
398 & RX_ATTENTION_FLAGS_MSDU_DONE)) {
399 __skb_queue_purge(amsdu);
400 return -EIO;
401 }
402
403 msdu_len_invalid = !!(__le32_to_cpu(rx_desc_attention->flags)
404 & (RX_ATTENTION_FLAGS_MPDU_LENGTH_ERR |
405 RX_ATTENTION_FLAGS_MSDU_LENGTH_ERR));
406 msdu_len = MS(__le32_to_cpu(rx_desc_msdu_start_common->info0),
407 RX_MSDU_START_INFO0_MSDU_LENGTH);
408 msdu_chained = rx_desc_frag_info_common->ring2_more_count;
409
410 if (msdu_len_invalid)
411 msdu_len = 0;
412
413 skb_trim(msdu, 0);
414 skb_put(msdu, min(msdu_len, ath10k_htt_rx_msdu_size(hw)));
415 msdu_len -= msdu->len;
416
417 /* Note: Chained buffers do not contain rx descriptor */
418 while (msdu_chained--) {
419 msdu = ath10k_htt_rx_netbuf_pop(htt);
420 if (!msdu) {
421 __skb_queue_purge(amsdu);
422 return -ENOENT;
423 }
424
425 __skb_queue_tail(amsdu, msdu);
426 skb_trim(msdu, 0);
427 skb_put(msdu, min(msdu_len, HTT_RX_BUF_SIZE));
428 msdu_len -= msdu->len;
429 msdu_chaining = 1;
430 }
431
432 last_msdu = __le32_to_cpu(rx_desc_msdu_end_common->info0) &
433 RX_MSDU_END_INFO0_LAST_MSDU;
434
435 /* FIXME: why are we skipping the first part of the rx_desc? */
436 trace_ath10k_htt_rx_desc(ar, (void *)rx_desc + sizeof(u32),
437 hw->rx_desc_ops->rx_desc_size - sizeof(u32));
438
439 if (last_msdu)
440 break;
441 }
442
443 if (skb_queue_empty(amsdu))
444 msdu_chaining = -1;
445
446 /*
447 * Don't refill the ring yet.
448 *
449 * First, the elements popped here are still in use - it is not
450 * safe to overwrite them until the matching call to
451 * mpdu_desc_list_next. Second, for efficiency it is preferable to
452 * refill the rx ring with 1 PPDU's worth of rx buffers (something
453 * like 32 x 3 buffers), rather than one MPDU's worth of rx buffers
454 * (something like 3 buffers). Consequently, we'll rely on the txrx
455 * SW to tell us when it is done pulling all the PPDU's rx buffers
456 * out of the rx ring, and then refill it just once.
457 */
458
459 return msdu_chaining;
460}
461
462static struct sk_buff *ath10k_htt_rx_pop_paddr(struct ath10k_htt *htt,
463 u64 paddr)
464{
465 struct ath10k *ar = htt->ar;
466 struct ath10k_skb_rxcb *rxcb;
467 struct sk_buff *msdu;
468
469 lockdep_assert_held(&htt->rx_ring.lock);
470
471 msdu = ath10k_htt_rx_find_skb_paddr(ar, paddr);
472 if (!msdu)
473 return NULL;
474
475 rxcb = ATH10K_SKB_RXCB(msdu);
476 hash_del(&rxcb->hlist);
477 htt->rx_ring.fill_cnt--;
478
479 dma_unmap_single(htt->ar->dev, rxcb->paddr,
480 msdu->len + skb_tailroom(msdu),
481 DMA_FROM_DEVICE);
482 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ",
483 msdu->data, msdu->len + skb_tailroom(msdu));
484
485 return msdu;
486}
487
488static inline void ath10k_htt_append_frag_list(struct sk_buff *skb_head,
489 struct sk_buff *frag_list,
490 unsigned int frag_len)
491{
492 skb_shinfo(skb_head)->frag_list = frag_list;
493 skb_head->data_len = frag_len;
494 skb_head->len += skb_head->data_len;
495}
496
497static int ath10k_htt_rx_handle_amsdu_mon_32(struct ath10k_htt *htt,
498 struct sk_buff *msdu,
499 struct htt_rx_in_ord_msdu_desc **msdu_desc)
500{
501 struct ath10k *ar = htt->ar;
502 struct ath10k_hw_params *hw = &ar->hw_params;
503 u32 paddr;
504 struct sk_buff *frag_buf;
505 struct sk_buff *prev_frag_buf;
506 u8 last_frag;
507 struct htt_rx_in_ord_msdu_desc *ind_desc = *msdu_desc;
508 struct htt_rx_desc *rxd;
509 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len);
510
511 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
512 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
513
514 skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
515 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
516 skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw)));
517 amsdu_len -= msdu->len;
518
519 last_frag = ind_desc->reserved;
520 if (last_frag) {
521 if (amsdu_len) {
522 ath10k_warn(ar, "invalid amsdu len %u, left %d",
523 __le16_to_cpu(ind_desc->msdu_len),
524 amsdu_len);
525 }
526 return 0;
527 }
528
529 ind_desc++;
530 paddr = __le32_to_cpu(ind_desc->msdu_paddr);
531 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
532 if (!frag_buf) {
533 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%x", paddr);
534 return -ENOENT;
535 }
536
537 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
538 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len);
539
540 amsdu_len -= frag_buf->len;
541 prev_frag_buf = frag_buf;
542 last_frag = ind_desc->reserved;
543 while (!last_frag) {
544 ind_desc++;
545 paddr = __le32_to_cpu(ind_desc->msdu_paddr);
546 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
547 if (!frag_buf) {
548 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%x",
549 paddr);
550 prev_frag_buf->next = NULL;
551 return -ENOENT;
552 }
553
554 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
555 last_frag = ind_desc->reserved;
556 amsdu_len -= frag_buf->len;
557
558 prev_frag_buf->next = frag_buf;
559 prev_frag_buf = frag_buf;
560 }
561
562 if (amsdu_len) {
563 ath10k_warn(ar, "invalid amsdu len %u, left %d",
564 __le16_to_cpu(ind_desc->msdu_len), amsdu_len);
565 }
566
567 *msdu_desc = ind_desc;
568
569 prev_frag_buf->next = NULL;
570 return 0;
571}
572
573static int
574ath10k_htt_rx_handle_amsdu_mon_64(struct ath10k_htt *htt,
575 struct sk_buff *msdu,
576 struct htt_rx_in_ord_msdu_desc_ext **msdu_desc)
577{
578 struct ath10k *ar = htt->ar;
579 struct ath10k_hw_params *hw = &ar->hw_params;
580 u64 paddr;
581 struct sk_buff *frag_buf;
582 struct sk_buff *prev_frag_buf;
583 u8 last_frag;
584 struct htt_rx_in_ord_msdu_desc_ext *ind_desc = *msdu_desc;
585 struct htt_rx_desc *rxd;
586 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len);
587
588 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
589 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
590
591 skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
592 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
593 skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw)));
594 amsdu_len -= msdu->len;
595
596 last_frag = ind_desc->reserved;
597 if (last_frag) {
598 if (amsdu_len) {
599 ath10k_warn(ar, "invalid amsdu len %u, left %d",
600 __le16_to_cpu(ind_desc->msdu_len),
601 amsdu_len);
602 }
603 return 0;
604 }
605
606 ind_desc++;
607 paddr = __le64_to_cpu(ind_desc->msdu_paddr);
608 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
609 if (!frag_buf) {
610 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%llx", paddr);
611 return -ENOENT;
612 }
613
614 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
615 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len);
616
617 amsdu_len -= frag_buf->len;
618 prev_frag_buf = frag_buf;
619 last_frag = ind_desc->reserved;
620 while (!last_frag) {
621 ind_desc++;
622 paddr = __le64_to_cpu(ind_desc->msdu_paddr);
623 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
624 if (!frag_buf) {
625 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%llx",
626 paddr);
627 prev_frag_buf->next = NULL;
628 return -ENOENT;
629 }
630
631 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
632 last_frag = ind_desc->reserved;
633 amsdu_len -= frag_buf->len;
634
635 prev_frag_buf->next = frag_buf;
636 prev_frag_buf = frag_buf;
637 }
638
639 if (amsdu_len) {
640 ath10k_warn(ar, "invalid amsdu len %u, left %d",
641 __le16_to_cpu(ind_desc->msdu_len), amsdu_len);
642 }
643
644 *msdu_desc = ind_desc;
645
646 prev_frag_buf->next = NULL;
647 return 0;
648}
649
650static int ath10k_htt_rx_pop_paddr32_list(struct ath10k_htt *htt,
651 struct htt_rx_in_ord_ind *ev,
652 struct sk_buff_head *list)
653{
654 struct ath10k *ar = htt->ar;
655 struct ath10k_hw_params *hw = &ar->hw_params;
656 struct htt_rx_in_ord_msdu_desc *msdu_desc = ev->msdu_descs32;
657 struct htt_rx_desc *rxd;
658 struct rx_attention *rxd_attention;
659 struct sk_buff *msdu;
660 int msdu_count, ret;
661 bool is_offload;
662 u32 paddr;
663
664 lockdep_assert_held(&htt->rx_ring.lock);
665
666 msdu_count = __le16_to_cpu(ev->msdu_count);
667 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
668
669 while (msdu_count--) {
670 paddr = __le32_to_cpu(msdu_desc->msdu_paddr);
671
672 msdu = ath10k_htt_rx_pop_paddr(htt, paddr);
673 if (!msdu) {
674 __skb_queue_purge(list);
675 return -ENOENT;
676 }
677
678 if (!is_offload && ar->monitor_arvif) {
679 ret = ath10k_htt_rx_handle_amsdu_mon_32(htt, msdu,
680 &msdu_desc);
681 if (ret) {
682 __skb_queue_purge(list);
683 return ret;
684 }
685 __skb_queue_tail(list, msdu);
686 msdu_desc++;
687 continue;
688 }
689
690 __skb_queue_tail(list, msdu);
691
692 if (!is_offload) {
693 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
694 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
695
696 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
697
698 skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
699 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
700 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len));
701
702 if (!(__le32_to_cpu(rxd_attention->flags) &
703 RX_ATTENTION_FLAGS_MSDU_DONE)) {
704 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n");
705 return -EIO;
706 }
707 }
708
709 msdu_desc++;
710 }
711
712 return 0;
713}
714
715static int ath10k_htt_rx_pop_paddr64_list(struct ath10k_htt *htt,
716 struct htt_rx_in_ord_ind *ev,
717 struct sk_buff_head *list)
718{
719 struct ath10k *ar = htt->ar;
720 struct ath10k_hw_params *hw = &ar->hw_params;
721 struct htt_rx_in_ord_msdu_desc_ext *msdu_desc = ev->msdu_descs64;
722 struct htt_rx_desc *rxd;
723 struct rx_attention *rxd_attention;
724 struct sk_buff *msdu;
725 int msdu_count, ret;
726 bool is_offload;
727 u64 paddr;
728
729 lockdep_assert_held(&htt->rx_ring.lock);
730
731 msdu_count = __le16_to_cpu(ev->msdu_count);
732 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
733
734 while (msdu_count--) {
735 paddr = __le64_to_cpu(msdu_desc->msdu_paddr);
736 msdu = ath10k_htt_rx_pop_paddr(htt, paddr);
737 if (!msdu) {
738 __skb_queue_purge(list);
739 return -ENOENT;
740 }
741
742 if (!is_offload && ar->monitor_arvif) {
743 ret = ath10k_htt_rx_handle_amsdu_mon_64(htt, msdu,
744 &msdu_desc);
745 if (ret) {
746 __skb_queue_purge(list);
747 return ret;
748 }
749 __skb_queue_tail(list, msdu);
750 msdu_desc++;
751 continue;
752 }
753
754 __skb_queue_tail(list, msdu);
755
756 if (!is_offload) {
757 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
758 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
759
760 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
761
762 skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
763 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
764 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len));
765
766 if (!(__le32_to_cpu(rxd_attention->flags) &
767 RX_ATTENTION_FLAGS_MSDU_DONE)) {
768 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n");
769 return -EIO;
770 }
771 }
772
773 msdu_desc++;
774 }
775
776 return 0;
777}
778
779int ath10k_htt_rx_alloc(struct ath10k_htt *htt)
780{
781 struct ath10k *ar = htt->ar;
782 dma_addr_t paddr;
783 void *vaddr, *vaddr_ring;
784 size_t size;
785 struct timer_list *timer = &htt->rx_ring.refill_retry_timer;
786
787 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
788 return 0;
789
790 htt->rx_confused = false;
791
792 /* XXX: The fill level could be changed during runtime in response to
793 * the host processing latency. Is this really worth it?
794 */
795 htt->rx_ring.size = HTT_RX_RING_SIZE;
796 htt->rx_ring.size_mask = htt->rx_ring.size - 1;
797 htt->rx_ring.fill_level = ar->hw_params.rx_ring_fill_level;
798
799 if (!is_power_of_2(htt->rx_ring.size)) {
800 ath10k_warn(ar, "htt rx ring size is not power of 2\n");
801 return -EINVAL;
802 }
803
804 htt->rx_ring.netbufs_ring =
805 kcalloc(htt->rx_ring.size, sizeof(struct sk_buff *),
806 GFP_KERNEL);
807 if (!htt->rx_ring.netbufs_ring)
808 goto err_netbuf;
809
810 size = ath10k_htt_get_rx_ring_size(htt);
811
812 vaddr_ring = dma_alloc_coherent(htt->ar->dev, size, &paddr, GFP_KERNEL);
813 if (!vaddr_ring)
814 goto err_dma_ring;
815
816 ath10k_htt_config_paddrs_ring(htt, vaddr_ring);
817 htt->rx_ring.base_paddr = paddr;
818
819 vaddr = dma_alloc_coherent(htt->ar->dev,
820 sizeof(*htt->rx_ring.alloc_idx.vaddr),
821 &paddr, GFP_KERNEL);
822 if (!vaddr)
823 goto err_dma_idx;
824
825 htt->rx_ring.alloc_idx.vaddr = vaddr;
826 htt->rx_ring.alloc_idx.paddr = paddr;
827 htt->rx_ring.sw_rd_idx.msdu_payld = htt->rx_ring.size_mask;
828 *htt->rx_ring.alloc_idx.vaddr = 0;
829
830 /* Initialize the Rx refill retry timer */
831 timer_setup(timer, ath10k_htt_rx_ring_refill_retry, 0);
832
833 spin_lock_init(&htt->rx_ring.lock);
834
835 htt->rx_ring.fill_cnt = 0;
836 htt->rx_ring.sw_rd_idx.msdu_payld = 0;
837 hash_init(htt->rx_ring.skb_table);
838
839 skb_queue_head_init(&htt->rx_msdus_q);
840 skb_queue_head_init(&htt->rx_in_ord_compl_q);
841 skb_queue_head_init(&htt->tx_fetch_ind_q);
842 atomic_set(&htt->num_mpdus_ready, 0);
843
844 ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt rx ring size %d fill_level %d\n",
845 htt->rx_ring.size, htt->rx_ring.fill_level);
846 return 0;
847
848err_dma_idx:
849 dma_free_coherent(htt->ar->dev,
850 ath10k_htt_get_rx_ring_size(htt),
851 vaddr_ring,
852 htt->rx_ring.base_paddr);
853 ath10k_htt_config_paddrs_ring(htt, NULL);
854err_dma_ring:
855 kfree(htt->rx_ring.netbufs_ring);
856 htt->rx_ring.netbufs_ring = NULL;
857err_netbuf:
858 return -ENOMEM;
859}
860
861static int ath10k_htt_rx_crypto_param_len(struct ath10k *ar,
862 enum htt_rx_mpdu_encrypt_type type)
863{
864 switch (type) {
865 case HTT_RX_MPDU_ENCRYPT_NONE:
866 return 0;
867 case HTT_RX_MPDU_ENCRYPT_WEP40:
868 case HTT_RX_MPDU_ENCRYPT_WEP104:
869 return IEEE80211_WEP_IV_LEN;
870 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
871 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
872 return IEEE80211_TKIP_IV_LEN;
873 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
874 return IEEE80211_CCMP_HDR_LEN;
875 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
876 return IEEE80211_CCMP_256_HDR_LEN;
877 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
878 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
879 return IEEE80211_GCMP_HDR_LEN;
880 case HTT_RX_MPDU_ENCRYPT_WEP128:
881 case HTT_RX_MPDU_ENCRYPT_WAPI:
882 break;
883 }
884
885 ath10k_warn(ar, "unsupported encryption type %d\n", type);
886 return 0;
887}
888
889#define MICHAEL_MIC_LEN 8
890
891static int ath10k_htt_rx_crypto_mic_len(struct ath10k *ar,
892 enum htt_rx_mpdu_encrypt_type type)
893{
894 switch (type) {
895 case HTT_RX_MPDU_ENCRYPT_NONE:
896 case HTT_RX_MPDU_ENCRYPT_WEP40:
897 case HTT_RX_MPDU_ENCRYPT_WEP104:
898 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
899 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
900 return 0;
901 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
902 return IEEE80211_CCMP_MIC_LEN;
903 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
904 return IEEE80211_CCMP_256_MIC_LEN;
905 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
906 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
907 return IEEE80211_GCMP_MIC_LEN;
908 case HTT_RX_MPDU_ENCRYPT_WEP128:
909 case HTT_RX_MPDU_ENCRYPT_WAPI:
910 break;
911 }
912
913 ath10k_warn(ar, "unsupported encryption type %d\n", type);
914 return 0;
915}
916
917static int ath10k_htt_rx_crypto_icv_len(struct ath10k *ar,
918 enum htt_rx_mpdu_encrypt_type type)
919{
920 switch (type) {
921 case HTT_RX_MPDU_ENCRYPT_NONE:
922 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
923 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
924 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
925 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
926 return 0;
927 case HTT_RX_MPDU_ENCRYPT_WEP40:
928 case HTT_RX_MPDU_ENCRYPT_WEP104:
929 return IEEE80211_WEP_ICV_LEN;
930 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
931 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
932 return IEEE80211_TKIP_ICV_LEN;
933 case HTT_RX_MPDU_ENCRYPT_WEP128:
934 case HTT_RX_MPDU_ENCRYPT_WAPI:
935 break;
936 }
937
938 ath10k_warn(ar, "unsupported encryption type %d\n", type);
939 return 0;
940}
941
942struct amsdu_subframe_hdr {
943 u8 dst[ETH_ALEN];
944 u8 src[ETH_ALEN];
945 __be16 len;
946} __packed;
947
948#define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63)
949
950static inline u8 ath10k_bw_to_mac80211_bw(u8 bw)
951{
952 u8 ret = 0;
953
954 switch (bw) {
955 case 0:
956 ret = RATE_INFO_BW_20;
957 break;
958 case 1:
959 ret = RATE_INFO_BW_40;
960 break;
961 case 2:
962 ret = RATE_INFO_BW_80;
963 break;
964 case 3:
965 ret = RATE_INFO_BW_160;
966 break;
967 }
968
969 return ret;
970}
971
972static void ath10k_htt_rx_h_rates(struct ath10k *ar,
973 struct ieee80211_rx_status *status,
974 struct htt_rx_desc *rxd)
975{
976 struct ath10k_hw_params *hw = &ar->hw_params;
977 struct rx_attention *rxd_attention;
978 struct rx_mpdu_start *rxd_mpdu_start;
979 struct rx_mpdu_end *rxd_mpdu_end;
980 struct rx_msdu_start_common *rxd_msdu_start_common;
981 struct rx_msdu_end_common *rxd_msdu_end_common;
982 struct rx_ppdu_start *rxd_ppdu_start;
983 struct ieee80211_supported_band *sband;
984 u8 cck, rate, bw, sgi, mcs, nss;
985 u8 *rxd_msdu_payload;
986 u8 preamble = 0;
987 u8 group_id;
988 u32 info1, info2, info3;
989 u32 stbc, nsts_su;
990
991 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
992 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
993 rxd_mpdu_end = ath10k_htt_rx_desc_get_mpdu_end(hw, rxd);
994 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
995 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
996 rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd);
997 rxd_msdu_payload = ath10k_htt_rx_desc_get_msdu_payload(hw, rxd);
998
999 info1 = __le32_to_cpu(rxd_ppdu_start->info1);
1000 info2 = __le32_to_cpu(rxd_ppdu_start->info2);
1001 info3 = __le32_to_cpu(rxd_ppdu_start->info3);
1002
1003 preamble = MS(info1, RX_PPDU_START_INFO1_PREAMBLE_TYPE);
1004
1005 switch (preamble) {
1006 case HTT_RX_LEGACY:
1007 /* To get legacy rate index band is required. Since band can't
1008 * be undefined check if freq is non-zero.
1009 */
1010 if (!status->freq)
1011 return;
1012
1013 cck = info1 & RX_PPDU_START_INFO1_L_SIG_RATE_SELECT;
1014 rate = MS(info1, RX_PPDU_START_INFO1_L_SIG_RATE);
1015 rate &= ~RX_PPDU_START_RATE_FLAG;
1016
1017 sband = &ar->mac.sbands[status->band];
1018 status->rate_idx = ath10k_mac_hw_rate_to_idx(sband, rate, cck);
1019 break;
1020 case HTT_RX_HT:
1021 case HTT_RX_HT_WITH_TXBF:
1022 /* HT-SIG - Table 20-11 in info2 and info3 */
1023 mcs = info2 & 0x1F;
1024 nss = mcs >> 3;
1025 bw = (info2 >> 7) & 1;
1026 sgi = (info3 >> 7) & 1;
1027
1028 status->rate_idx = mcs;
1029 status->encoding = RX_ENC_HT;
1030 if (sgi)
1031 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1032 if (bw)
1033 status->bw = RATE_INFO_BW_40;
1034 break;
1035 case HTT_RX_VHT:
1036 case HTT_RX_VHT_WITH_TXBF:
1037 /* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3
1038 * TODO check this
1039 */
1040 bw = info2 & 3;
1041 sgi = info3 & 1;
1042 stbc = (info2 >> 3) & 1;
1043 group_id = (info2 >> 4) & 0x3F;
1044
1045 if (GROUP_ID_IS_SU_MIMO(group_id)) {
1046 mcs = (info3 >> 4) & 0x0F;
1047 nsts_su = ((info2 >> 10) & 0x07);
1048 if (stbc)
1049 nss = (nsts_su >> 2) + 1;
1050 else
1051 nss = (nsts_su + 1);
1052 } else {
1053 /* Hardware doesn't decode VHT-SIG-B into Rx descriptor
1054 * so it's impossible to decode MCS. Also since
1055 * firmware consumes Group Id Management frames host
1056 * has no knowledge regarding group/user position
1057 * mapping so it's impossible to pick the correct Nsts
1058 * from VHT-SIG-A1.
1059 *
1060 * Bandwidth and SGI are valid so report the rateinfo
1061 * on best-effort basis.
1062 */
1063 mcs = 0;
1064 nss = 1;
1065 }
1066
1067 if (mcs > 0x09) {
1068 ath10k_warn(ar, "invalid MCS received %u\n", mcs);
1069 ath10k_warn(ar, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n",
1070 __le32_to_cpu(rxd_attention->flags),
1071 __le32_to_cpu(rxd_mpdu_start->info0),
1072 __le32_to_cpu(rxd_mpdu_start->info1),
1073 __le32_to_cpu(rxd_msdu_start_common->info0),
1074 __le32_to_cpu(rxd_msdu_start_common->info1),
1075 rxd_ppdu_start->info0,
1076 __le32_to_cpu(rxd_ppdu_start->info1),
1077 __le32_to_cpu(rxd_ppdu_start->info2),
1078 __le32_to_cpu(rxd_ppdu_start->info3),
1079 __le32_to_cpu(rxd_ppdu_start->info4));
1080
1081 ath10k_warn(ar, "msdu end %08x mpdu end %08x\n",
1082 __le32_to_cpu(rxd_msdu_end_common->info0),
1083 __le32_to_cpu(rxd_mpdu_end->info0));
1084
1085 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL,
1086 "rx desc msdu payload: ",
1087 rxd_msdu_payload, 50);
1088 }
1089
1090 status->rate_idx = mcs;
1091 status->nss = nss;
1092
1093 if (sgi)
1094 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1095
1096 status->bw = ath10k_bw_to_mac80211_bw(bw);
1097 status->encoding = RX_ENC_VHT;
1098 break;
1099 default:
1100 break;
1101 }
1102}
1103
1104static struct ieee80211_channel *
1105ath10k_htt_rx_h_peer_channel(struct ath10k *ar, struct htt_rx_desc *rxd)
1106{
1107 struct ath10k_hw_params *hw = &ar->hw_params;
1108 struct rx_attention *rxd_attention;
1109 struct rx_msdu_end_common *rxd_msdu_end_common;
1110 struct rx_mpdu_start *rxd_mpdu_start;
1111 struct ath10k_peer *peer;
1112 struct ath10k_vif *arvif;
1113 struct cfg80211_chan_def def;
1114 u16 peer_id;
1115
1116 lockdep_assert_held(&ar->data_lock);
1117
1118 if (!rxd)
1119 return NULL;
1120
1121 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
1122 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
1123 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
1124
1125 if (rxd_attention->flags &
1126 __cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID))
1127 return NULL;
1128
1129 if (!(rxd_msdu_end_common->info0 &
1130 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)))
1131 return NULL;
1132
1133 peer_id = MS(__le32_to_cpu(rxd_mpdu_start->info0),
1134 RX_MPDU_START_INFO0_PEER_IDX);
1135
1136 peer = ath10k_peer_find_by_id(ar, peer_id);
1137 if (!peer)
1138 return NULL;
1139
1140 arvif = ath10k_get_arvif(ar, peer->vdev_id);
1141 if (WARN_ON_ONCE(!arvif))
1142 return NULL;
1143
1144 if (ath10k_mac_vif_chan(arvif->vif, &def))
1145 return NULL;
1146
1147 return def.chan;
1148}
1149
1150static struct ieee80211_channel *
1151ath10k_htt_rx_h_vdev_channel(struct ath10k *ar, u32 vdev_id)
1152{
1153 struct ath10k_vif *arvif;
1154 struct cfg80211_chan_def def;
1155
1156 lockdep_assert_held(&ar->data_lock);
1157
1158 list_for_each_entry(arvif, &ar->arvifs, list) {
1159 if (arvif->vdev_id == vdev_id &&
1160 ath10k_mac_vif_chan(arvif->vif, &def) == 0)
1161 return def.chan;
1162 }
1163
1164 return NULL;
1165}
1166
1167static void
1168ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw *hw,
1169 struct ieee80211_chanctx_conf *conf,
1170 void *data)
1171{
1172 struct cfg80211_chan_def *def = data;
1173
1174 *def = conf->def;
1175}
1176
1177static struct ieee80211_channel *
1178ath10k_htt_rx_h_any_channel(struct ath10k *ar)
1179{
1180 struct cfg80211_chan_def def = {};
1181
1182 ieee80211_iter_chan_contexts_atomic(ar->hw,
1183 ath10k_htt_rx_h_any_chan_iter,
1184 &def);
1185
1186 return def.chan;
1187}
1188
1189static bool ath10k_htt_rx_h_channel(struct ath10k *ar,
1190 struct ieee80211_rx_status *status,
1191 struct htt_rx_desc *rxd,
1192 u32 vdev_id)
1193{
1194 struct ieee80211_channel *ch;
1195
1196 spin_lock_bh(&ar->data_lock);
1197 ch = ar->scan_channel;
1198 if (!ch)
1199 ch = ar->rx_channel;
1200 if (!ch)
1201 ch = ath10k_htt_rx_h_peer_channel(ar, rxd);
1202 if (!ch)
1203 ch = ath10k_htt_rx_h_vdev_channel(ar, vdev_id);
1204 if (!ch)
1205 ch = ath10k_htt_rx_h_any_channel(ar);
1206 if (!ch)
1207 ch = ar->tgt_oper_chan;
1208 spin_unlock_bh(&ar->data_lock);
1209
1210 if (!ch)
1211 return false;
1212
1213 status->band = ch->band;
1214 status->freq = ch->center_freq;
1215
1216 return true;
1217}
1218
1219static void ath10k_htt_rx_h_signal(struct ath10k *ar,
1220 struct ieee80211_rx_status *status,
1221 struct htt_rx_desc *rxd)
1222{
1223 struct ath10k_hw_params *hw = &ar->hw_params;
1224 struct rx_ppdu_start *rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd);
1225 int i;
1226
1227 for (i = 0; i < IEEE80211_MAX_CHAINS ; i++) {
1228 status->chains &= ~BIT(i);
1229
1230 if (rxd_ppdu_start->rssi_chains[i].pri20_mhz != 0x80) {
1231 status->chain_signal[i] = ATH10K_DEFAULT_NOISE_FLOOR +
1232 rxd_ppdu_start->rssi_chains[i].pri20_mhz;
1233
1234 status->chains |= BIT(i);
1235 }
1236 }
1237
1238 /* FIXME: Get real NF */
1239 status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
1240 rxd_ppdu_start->rssi_comb;
1241 status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
1242}
1243
1244static void ath10k_htt_rx_h_mactime(struct ath10k *ar,
1245 struct ieee80211_rx_status *status,
1246 struct htt_rx_desc *rxd)
1247{
1248 struct ath10k_hw_params *hw = &ar->hw_params;
1249 struct rx_ppdu_end_common *rxd_ppdu_end_common;
1250
1251 rxd_ppdu_end_common = ath10k_htt_rx_desc_get_ppdu_end(hw, rxd);
1252
1253 /* FIXME: TSF is known only at the end of PPDU, in the last MPDU. This
1254 * means all prior MSDUs in a PPDU are reported to mac80211 without the
1255 * TSF. Is it worth holding frames until end of PPDU is known?
1256 *
1257 * FIXME: Can we get/compute 64bit TSF?
1258 */
1259 status->mactime = __le32_to_cpu(rxd_ppdu_end_common->tsf_timestamp);
1260 status->flag |= RX_FLAG_MACTIME_END;
1261}
1262
1263static void ath10k_htt_rx_h_ppdu(struct ath10k *ar,
1264 struct sk_buff_head *amsdu,
1265 struct ieee80211_rx_status *status,
1266 u32 vdev_id)
1267{
1268 struct sk_buff *first;
1269 struct ath10k_hw_params *hw = &ar->hw_params;
1270 struct htt_rx_desc *rxd;
1271 struct rx_attention *rxd_attention;
1272 bool is_first_ppdu;
1273 bool is_last_ppdu;
1274
1275 if (skb_queue_empty(amsdu))
1276 return;
1277
1278 first = skb_peek(amsdu);
1279 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1280 (void *)first->data - hw->rx_desc_ops->rx_desc_size);
1281
1282 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
1283
1284 is_first_ppdu = !!(rxd_attention->flags &
1285 __cpu_to_le32(RX_ATTENTION_FLAGS_FIRST_MPDU));
1286 is_last_ppdu = !!(rxd_attention->flags &
1287 __cpu_to_le32(RX_ATTENTION_FLAGS_LAST_MPDU));
1288
1289 if (is_first_ppdu) {
1290 /* New PPDU starts so clear out the old per-PPDU status. */
1291 status->freq = 0;
1292 status->rate_idx = 0;
1293 status->nss = 0;
1294 status->encoding = RX_ENC_LEGACY;
1295 status->bw = RATE_INFO_BW_20;
1296
1297 status->flag &= ~RX_FLAG_MACTIME_END;
1298 status->flag |= RX_FLAG_NO_SIGNAL_VAL;
1299
1300 status->flag &= ~(RX_FLAG_AMPDU_IS_LAST);
1301 status->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN;
1302 status->ampdu_reference = ar->ampdu_reference;
1303
1304 ath10k_htt_rx_h_signal(ar, status, rxd);
1305 ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id);
1306 ath10k_htt_rx_h_rates(ar, status, rxd);
1307 }
1308
1309 if (is_last_ppdu) {
1310 ath10k_htt_rx_h_mactime(ar, status, rxd);
1311
1312 /* set ampdu last segment flag */
1313 status->flag |= RX_FLAG_AMPDU_IS_LAST;
1314 ar->ampdu_reference++;
1315 }
1316}
1317
1318static const char * const tid_to_ac[] = {
1319 "BE",
1320 "BK",
1321 "BK",
1322 "BE",
1323 "VI",
1324 "VI",
1325 "VO",
1326 "VO",
1327};
1328
1329static char *ath10k_get_tid(struct ieee80211_hdr *hdr, char *out, size_t size)
1330{
1331 u8 *qc;
1332 int tid;
1333
1334 if (!ieee80211_is_data_qos(hdr->frame_control))
1335 return "";
1336
1337 qc = ieee80211_get_qos_ctl(hdr);
1338 tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
1339 if (tid < 8)
1340 snprintf(out, size, "tid %d (%s)", tid, tid_to_ac[tid]);
1341 else
1342 snprintf(out, size, "tid %d", tid);
1343
1344 return out;
1345}
1346
1347static void ath10k_htt_rx_h_queue_msdu(struct ath10k *ar,
1348 struct ieee80211_rx_status *rx_status,
1349 struct sk_buff *skb)
1350{
1351 struct ieee80211_rx_status *status;
1352
1353 status = IEEE80211_SKB_RXCB(skb);
1354 *status = *rx_status;
1355
1356 skb_queue_tail(&ar->htt.rx_msdus_q, skb);
1357}
1358
1359static void ath10k_process_rx(struct ath10k *ar, struct sk_buff *skb)
1360{
1361 struct ieee80211_rx_status *status;
1362 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1363 char tid[32];
1364
1365 status = IEEE80211_SKB_RXCB(skb);
1366
1367 if (!(ar->filter_flags & FIF_FCSFAIL) &&
1368 status->flag & RX_FLAG_FAILED_FCS_CRC) {
1369 ar->stats.rx_crc_err_drop++;
1370 dev_kfree_skb_any(skb);
1371 return;
1372 }
1373
1374 ath10k_dbg(ar, ATH10K_DBG_DATA,
1375 "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",
1376 skb,
1377 skb->len,
1378 ieee80211_get_SA(hdr),
1379 ath10k_get_tid(hdr, tid, sizeof(tid)),
1380 is_multicast_ether_addr(ieee80211_get_DA(hdr)) ?
1381 "mcast" : "ucast",
1382 IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl)),
1383 (status->encoding == RX_ENC_LEGACY) ? "legacy" : "",
1384 (status->encoding == RX_ENC_HT) ? "ht" : "",
1385 (status->encoding == RX_ENC_VHT) ? "vht" : "",
1386 (status->bw == RATE_INFO_BW_40) ? "40" : "",
1387 (status->bw == RATE_INFO_BW_80) ? "80" : "",
1388 (status->bw == RATE_INFO_BW_160) ? "160" : "",
1389 status->enc_flags & RX_ENC_FLAG_SHORT_GI ? "sgi " : "",
1390 status->rate_idx,
1391 status->nss,
1392 status->freq,
1393 status->band, status->flag,
1394 !!(status->flag & RX_FLAG_FAILED_FCS_CRC),
1395 !!(status->flag & RX_FLAG_MMIC_ERROR),
1396 !!(status->flag & RX_FLAG_AMSDU_MORE));
1397 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ",
1398 skb->data, skb->len);
1399 trace_ath10k_rx_hdr(ar, skb->data, skb->len);
1400 trace_ath10k_rx_payload(ar, skb->data, skb->len);
1401
1402 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi);
1403}
1404
1405static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k *ar,
1406 struct ieee80211_hdr *hdr)
1407{
1408 int len = ieee80211_hdrlen(hdr->frame_control);
1409
1410 if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING,
1411 ar->running_fw->fw_file.fw_features))
1412 len = round_up(len, 4);
1413
1414 return len;
1415}
1416
1417static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar,
1418 struct sk_buff *msdu,
1419 struct ieee80211_rx_status *status,
1420 enum htt_rx_mpdu_encrypt_type enctype,
1421 bool is_decrypted,
1422 const u8 first_hdr[64])
1423{
1424 struct ieee80211_hdr *hdr;
1425 struct ath10k_hw_params *hw = &ar->hw_params;
1426 struct htt_rx_desc *rxd;
1427 struct rx_msdu_end_common *rxd_msdu_end_common;
1428 size_t hdr_len;
1429 size_t crypto_len;
1430 bool is_first;
1431 bool is_last;
1432 bool msdu_limit_err;
1433 int bytes_aligned = ar->hw_params.decap_align_bytes;
1434 u8 *qos;
1435
1436 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1437 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1438
1439 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
1440 is_first = !!(rxd_msdu_end_common->info0 &
1441 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
1442 is_last = !!(rxd_msdu_end_common->info0 &
1443 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
1444
1445 /* Delivered decapped frame:
1446 * [802.11 header]
1447 * [crypto param] <-- can be trimmed if !fcs_err &&
1448 * !decrypt_err && !peer_idx_invalid
1449 * [amsdu header] <-- only if A-MSDU
1450 * [rfc1042/llc]
1451 * [payload]
1452 * [FCS] <-- at end, needs to be trimmed
1453 */
1454
1455 /* Some hardwares(QCA99x0 variants) limit number of msdus in a-msdu when
1456 * deaggregate, so that unwanted MSDU-deaggregation is avoided for
1457 * error packets. If limit exceeds, hw sends all remaining MSDUs as
1458 * a single last MSDU with this msdu limit error set.
1459 */
1460 msdu_limit_err = ath10k_htt_rx_desc_msdu_limit_error(hw, rxd);
1461
1462 /* If MSDU limit error happens, then don't warn on, the partial raw MSDU
1463 * without first MSDU is expected in that case, and handled later here.
1464 */
1465 /* This probably shouldn't happen but warn just in case */
1466 if (WARN_ON_ONCE(!is_first && !msdu_limit_err))
1467 return;
1468
1469 /* This probably shouldn't happen but warn just in case */
1470 if (WARN_ON_ONCE(!(is_first && is_last) && !msdu_limit_err))
1471 return;
1472
1473 skb_trim(msdu, msdu->len - FCS_LEN);
1474
1475 /* Push original 80211 header */
1476 if (unlikely(msdu_limit_err)) {
1477 hdr = (struct ieee80211_hdr *)first_hdr;
1478 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1479 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
1480
1481 if (ieee80211_is_data_qos(hdr->frame_control)) {
1482 qos = ieee80211_get_qos_ctl(hdr);
1483 qos[0] |= IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1484 }
1485
1486 if (crypto_len)
1487 memcpy(skb_push(msdu, crypto_len),
1488 (void *)hdr + round_up(hdr_len, bytes_aligned),
1489 crypto_len);
1490
1491 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1492 }
1493
1494 /* In most cases this will be true for sniffed frames. It makes sense
1495 * to deliver them as-is without stripping the crypto param. This is
1496 * necessary for software based decryption.
1497 *
1498 * If there's no error then the frame is decrypted. At least that is
1499 * the case for frames that come in via fragmented rx indication.
1500 */
1501 if (!is_decrypted)
1502 return;
1503
1504 /* The payload is decrypted so strip crypto params. Start from tail
1505 * since hdr is used to compute some stuff.
1506 */
1507
1508 hdr = (void *)msdu->data;
1509
1510 /* Tail */
1511 if (status->flag & RX_FLAG_IV_STRIPPED) {
1512 skb_trim(msdu, msdu->len -
1513 ath10k_htt_rx_crypto_mic_len(ar, enctype));
1514
1515 skb_trim(msdu, msdu->len -
1516 ath10k_htt_rx_crypto_icv_len(ar, enctype));
1517 } else {
1518 /* MIC */
1519 if (status->flag & RX_FLAG_MIC_STRIPPED)
1520 skb_trim(msdu, msdu->len -
1521 ath10k_htt_rx_crypto_mic_len(ar, enctype));
1522
1523 /* ICV */
1524 if (status->flag & RX_FLAG_ICV_STRIPPED)
1525 skb_trim(msdu, msdu->len -
1526 ath10k_htt_rx_crypto_icv_len(ar, enctype));
1527 }
1528
1529 /* MMIC */
1530 if ((status->flag & RX_FLAG_MMIC_STRIPPED) &&
1531 !ieee80211_has_morefrags(hdr->frame_control) &&
1532 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
1533 skb_trim(msdu, msdu->len - MICHAEL_MIC_LEN);
1534
1535 /* Head */
1536 if (status->flag & RX_FLAG_IV_STRIPPED) {
1537 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1538 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
1539
1540 memmove((void *)msdu->data + crypto_len,
1541 (void *)msdu->data, hdr_len);
1542 skb_pull(msdu, crypto_len);
1543 }
1544}
1545
1546static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k *ar,
1547 struct sk_buff *msdu,
1548 struct ieee80211_rx_status *status,
1549 const u8 first_hdr[64],
1550 enum htt_rx_mpdu_encrypt_type enctype)
1551{
1552 struct ath10k_hw_params *hw = &ar->hw_params;
1553 struct ieee80211_hdr *hdr;
1554 struct htt_rx_desc *rxd;
1555 size_t hdr_len;
1556 u8 da[ETH_ALEN];
1557 u8 sa[ETH_ALEN];
1558 int l3_pad_bytes;
1559 int bytes_aligned = ar->hw_params.decap_align_bytes;
1560
1561 /* Delivered decapped frame:
1562 * [nwifi 802.11 header] <-- replaced with 802.11 hdr
1563 * [rfc1042/llc]
1564 *
1565 * Note: The nwifi header doesn't have QoS Control and is
1566 * (always?) a 3addr frame.
1567 *
1568 * Note2: There's no A-MSDU subframe header. Even if it's part
1569 * of an A-MSDU.
1570 */
1571
1572 /* pull decapped header and copy SA & DA */
1573 rxd = HTT_RX_BUF_TO_RX_DESC(hw, (void *)msdu->data -
1574 hw->rx_desc_ops->rx_desc_size);
1575
1576 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
1577 skb_put(msdu, l3_pad_bytes);
1578
1579 hdr = (struct ieee80211_hdr *)(msdu->data + l3_pad_bytes);
1580
1581 hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr);
1582 ether_addr_copy(da, ieee80211_get_DA(hdr));
1583 ether_addr_copy(sa, ieee80211_get_SA(hdr));
1584 skb_pull(msdu, hdr_len);
1585
1586 /* push original 802.11 header */
1587 hdr = (struct ieee80211_hdr *)first_hdr;
1588 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1589
1590 if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
1591 memcpy(skb_push(msdu,
1592 ath10k_htt_rx_crypto_param_len(ar, enctype)),
1593 (void *)hdr + round_up(hdr_len, bytes_aligned),
1594 ath10k_htt_rx_crypto_param_len(ar, enctype));
1595 }
1596
1597 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1598
1599 /* original 802.11 header has a different DA and in
1600 * case of 4addr it may also have different SA
1601 */
1602 hdr = (struct ieee80211_hdr *)msdu->data;
1603 ether_addr_copy(ieee80211_get_DA(hdr), da);
1604 ether_addr_copy(ieee80211_get_SA(hdr), sa);
1605}
1606
1607static void *ath10k_htt_rx_h_find_rfc1042(struct ath10k *ar,
1608 struct sk_buff *msdu,
1609 enum htt_rx_mpdu_encrypt_type enctype)
1610{
1611 struct ieee80211_hdr *hdr;
1612 struct ath10k_hw_params *hw = &ar->hw_params;
1613 struct htt_rx_desc *rxd;
1614 struct rx_msdu_end_common *rxd_msdu_end_common;
1615 u8 *rxd_rx_hdr_status;
1616 size_t hdr_len, crypto_len;
1617 void *rfc1042;
1618 bool is_first, is_last, is_amsdu;
1619 int bytes_aligned = ar->hw_params.decap_align_bytes;
1620
1621 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1622 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1623
1624 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
1625 rxd_rx_hdr_status = ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd);
1626 hdr = (void *)rxd_rx_hdr_status;
1627
1628 is_first = !!(rxd_msdu_end_common->info0 &
1629 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
1630 is_last = !!(rxd_msdu_end_common->info0 &
1631 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
1632 is_amsdu = !(is_first && is_last);
1633
1634 rfc1042 = hdr;
1635
1636 if (is_first) {
1637 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1638 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
1639
1640 rfc1042 += round_up(hdr_len, bytes_aligned) +
1641 round_up(crypto_len, bytes_aligned);
1642 }
1643
1644 if (is_amsdu)
1645 rfc1042 += sizeof(struct amsdu_subframe_hdr);
1646
1647 return rfc1042;
1648}
1649
1650static void ath10k_htt_rx_h_undecap_eth(struct ath10k *ar,
1651 struct sk_buff *msdu,
1652 struct ieee80211_rx_status *status,
1653 const u8 first_hdr[64],
1654 enum htt_rx_mpdu_encrypt_type enctype)
1655{
1656 struct ath10k_hw_params *hw = &ar->hw_params;
1657 struct ieee80211_hdr *hdr;
1658 struct ethhdr *eth;
1659 size_t hdr_len;
1660 void *rfc1042;
1661 u8 da[ETH_ALEN];
1662 u8 sa[ETH_ALEN];
1663 int l3_pad_bytes;
1664 struct htt_rx_desc *rxd;
1665 int bytes_aligned = ar->hw_params.decap_align_bytes;
1666
1667 /* Delivered decapped frame:
1668 * [eth header] <-- replaced with 802.11 hdr & rfc1042/llc
1669 * [payload]
1670 */
1671
1672 rfc1042 = ath10k_htt_rx_h_find_rfc1042(ar, msdu, enctype);
1673 if (WARN_ON_ONCE(!rfc1042))
1674 return;
1675
1676 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1677 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1678
1679 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
1680 skb_put(msdu, l3_pad_bytes);
1681 skb_pull(msdu, l3_pad_bytes);
1682
1683 /* pull decapped header and copy SA & DA */
1684 eth = (struct ethhdr *)msdu->data;
1685 ether_addr_copy(da, eth->h_dest);
1686 ether_addr_copy(sa, eth->h_source);
1687 skb_pull(msdu, sizeof(struct ethhdr));
1688
1689 /* push rfc1042/llc/snap */
1690 memcpy(skb_push(msdu, sizeof(struct rfc1042_hdr)), rfc1042,
1691 sizeof(struct rfc1042_hdr));
1692
1693 /* push original 802.11 header */
1694 hdr = (struct ieee80211_hdr *)first_hdr;
1695 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1696
1697 if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
1698 memcpy(skb_push(msdu,
1699 ath10k_htt_rx_crypto_param_len(ar, enctype)),
1700 (void *)hdr + round_up(hdr_len, bytes_aligned),
1701 ath10k_htt_rx_crypto_param_len(ar, enctype));
1702 }
1703
1704 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1705
1706 /* original 802.11 header has a different DA and in
1707 * case of 4addr it may also have different SA
1708 */
1709 hdr = (struct ieee80211_hdr *)msdu->data;
1710 ether_addr_copy(ieee80211_get_DA(hdr), da);
1711 ether_addr_copy(ieee80211_get_SA(hdr), sa);
1712}
1713
1714static void ath10k_htt_rx_h_undecap_snap(struct ath10k *ar,
1715 struct sk_buff *msdu,
1716 struct ieee80211_rx_status *status,
1717 const u8 first_hdr[64],
1718 enum htt_rx_mpdu_encrypt_type enctype)
1719{
1720 struct ath10k_hw_params *hw = &ar->hw_params;
1721 struct ieee80211_hdr *hdr;
1722 size_t hdr_len;
1723 int l3_pad_bytes;
1724 struct htt_rx_desc *rxd;
1725 int bytes_aligned = ar->hw_params.decap_align_bytes;
1726
1727 /* Delivered decapped frame:
1728 * [amsdu header] <-- replaced with 802.11 hdr
1729 * [rfc1042/llc]
1730 * [payload]
1731 */
1732
1733 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1734 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1735
1736 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
1737
1738 skb_put(msdu, l3_pad_bytes);
1739 skb_pull(msdu, sizeof(struct amsdu_subframe_hdr) + l3_pad_bytes);
1740
1741 hdr = (struct ieee80211_hdr *)first_hdr;
1742 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1743
1744 if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
1745 memcpy(skb_push(msdu,
1746 ath10k_htt_rx_crypto_param_len(ar, enctype)),
1747 (void *)hdr + round_up(hdr_len, bytes_aligned),
1748 ath10k_htt_rx_crypto_param_len(ar, enctype));
1749 }
1750
1751 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1752}
1753
1754static void ath10k_htt_rx_h_undecap(struct ath10k *ar,
1755 struct sk_buff *msdu,
1756 struct ieee80211_rx_status *status,
1757 u8 first_hdr[64],
1758 enum htt_rx_mpdu_encrypt_type enctype,
1759 bool is_decrypted)
1760{
1761 struct ath10k_hw_params *hw = &ar->hw_params;
1762 struct htt_rx_desc *rxd;
1763 struct rx_msdu_start_common *rxd_msdu_start_common;
1764 enum rx_msdu_decap_format decap;
1765
1766 /* First msdu's decapped header:
1767 * [802.11 header] <-- padded to 4 bytes long
1768 * [crypto param] <-- padded to 4 bytes long
1769 * [amsdu header] <-- only if A-MSDU
1770 * [rfc1042/llc]
1771 *
1772 * Other (2nd, 3rd, ..) msdu's decapped header:
1773 * [amsdu header] <-- only if A-MSDU
1774 * [rfc1042/llc]
1775 */
1776
1777 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1778 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1779
1780 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
1781 decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1),
1782 RX_MSDU_START_INFO1_DECAP_FORMAT);
1783
1784 switch (decap) {
1785 case RX_MSDU_DECAP_RAW:
1786 ath10k_htt_rx_h_undecap_raw(ar, msdu, status, enctype,
1787 is_decrypted, first_hdr);
1788 break;
1789 case RX_MSDU_DECAP_NATIVE_WIFI:
1790 ath10k_htt_rx_h_undecap_nwifi(ar, msdu, status, first_hdr,
1791 enctype);
1792 break;
1793 case RX_MSDU_DECAP_ETHERNET2_DIX:
1794 ath10k_htt_rx_h_undecap_eth(ar, msdu, status, first_hdr, enctype);
1795 break;
1796 case RX_MSDU_DECAP_8023_SNAP_LLC:
1797 ath10k_htt_rx_h_undecap_snap(ar, msdu, status, first_hdr,
1798 enctype);
1799 break;
1800 }
1801}
1802
1803static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb)
1804{
1805 struct htt_rx_desc *rxd;
1806 struct rx_attention *rxd_attention;
1807 struct rx_msdu_start_common *rxd_msdu_start_common;
1808 u32 flags, info;
1809 bool is_ip4, is_ip6;
1810 bool is_tcp, is_udp;
1811 bool ip_csum_ok, tcpudp_csum_ok;
1812
1813 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1814 (void *)skb->data - hw->rx_desc_ops->rx_desc_size);
1815
1816 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
1817 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
1818 flags = __le32_to_cpu(rxd_attention->flags);
1819 info = __le32_to_cpu(rxd_msdu_start_common->info1);
1820
1821 is_ip4 = !!(info & RX_MSDU_START_INFO1_IPV4_PROTO);
1822 is_ip6 = !!(info & RX_MSDU_START_INFO1_IPV6_PROTO);
1823 is_tcp = !!(info & RX_MSDU_START_INFO1_TCP_PROTO);
1824 is_udp = !!(info & RX_MSDU_START_INFO1_UDP_PROTO);
1825 ip_csum_ok = !(flags & RX_ATTENTION_FLAGS_IP_CHKSUM_FAIL);
1826 tcpudp_csum_ok = !(flags & RX_ATTENTION_FLAGS_TCP_UDP_CHKSUM_FAIL);
1827
1828 if (!is_ip4 && !is_ip6)
1829 return CHECKSUM_NONE;
1830 if (!is_tcp && !is_udp)
1831 return CHECKSUM_NONE;
1832 if (!ip_csum_ok)
1833 return CHECKSUM_NONE;
1834 if (!tcpudp_csum_ok)
1835 return CHECKSUM_NONE;
1836
1837 return CHECKSUM_UNNECESSARY;
1838}
1839
1840static void ath10k_htt_rx_h_csum_offload(struct ath10k_hw_params *hw,
1841 struct sk_buff *msdu)
1842{
1843 msdu->ip_summed = ath10k_htt_rx_get_csum_state(hw, msdu);
1844}
1845
1846static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb,
1847 enum htt_rx_mpdu_encrypt_type enctype)
1848{
1849 struct ieee80211_hdr *hdr;
1850 u64 pn = 0;
1851 u8 *ehdr;
1852
1853 hdr = (struct ieee80211_hdr *)skb->data;
1854 ehdr = skb->data + ieee80211_hdrlen(hdr->frame_control);
1855
1856 if (enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) {
1857 pn = ehdr[0];
1858 pn |= (u64)ehdr[1] << 8;
1859 pn |= (u64)ehdr[4] << 16;
1860 pn |= (u64)ehdr[5] << 24;
1861 pn |= (u64)ehdr[6] << 32;
1862 pn |= (u64)ehdr[7] << 40;
1863 }
1864 return pn;
1865}
1866
1867static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar,
1868 struct sk_buff *skb)
1869{
1870 struct ieee80211_hdr *hdr;
1871
1872 hdr = (struct ieee80211_hdr *)skb->data;
1873 return !is_multicast_ether_addr(hdr->addr1);
1874}
1875
1876static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar,
1877 struct sk_buff *skb,
1878 u16 peer_id,
1879 enum htt_rx_mpdu_encrypt_type enctype)
1880{
1881 struct ath10k_peer *peer;
1882 union htt_rx_pn_t *last_pn, new_pn = {0};
1883 struct ieee80211_hdr *hdr;
1884 u8 tid, frag_number;
1885 u32 seq;
1886
1887 peer = ath10k_peer_find_by_id(ar, peer_id);
1888 if (!peer) {
1889 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n");
1890 return false;
1891 }
1892
1893 hdr = (struct ieee80211_hdr *)skb->data;
1894 if (ieee80211_is_data_qos(hdr->frame_control))
1895 tid = ieee80211_get_tid(hdr);
1896 else
1897 tid = ATH10K_TXRX_NON_QOS_TID;
1898
1899 last_pn = &peer->frag_tids_last_pn[tid];
1900 new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, enctype);
1901 frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
1902 seq = IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl));
1903
1904 if (frag_number == 0) {
1905 last_pn->pn48 = new_pn.pn48;
1906 peer->frag_tids_seq[tid] = seq;
1907 } else {
1908 if (seq != peer->frag_tids_seq[tid])
1909 return false;
1910
1911 if (new_pn.pn48 != last_pn->pn48 + 1)
1912 return false;
1913
1914 last_pn->pn48 = new_pn.pn48;
1915 }
1916
1917 return true;
1918}
1919
1920static void ath10k_htt_rx_h_mpdu(struct ath10k *ar,
1921 struct sk_buff_head *amsdu,
1922 struct ieee80211_rx_status *status,
1923 bool fill_crypt_header,
1924 u8 *rx_hdr,
1925 enum ath10k_pkt_rx_err *err,
1926 u16 peer_id,
1927 bool frag)
1928{
1929 struct sk_buff *first;
1930 struct sk_buff *last;
1931 struct sk_buff *msdu, *temp;
1932 struct ath10k_hw_params *hw = &ar->hw_params;
1933 struct htt_rx_desc *rxd;
1934 struct rx_attention *rxd_attention;
1935 struct rx_mpdu_start *rxd_mpdu_start;
1936
1937 struct ieee80211_hdr *hdr;
1938 enum htt_rx_mpdu_encrypt_type enctype;
1939 u8 first_hdr[64];
1940 u8 *qos;
1941 bool has_fcs_err;
1942 bool has_crypto_err;
1943 bool has_tkip_err;
1944 bool has_peer_idx_invalid;
1945 bool is_decrypted;
1946 bool is_mgmt;
1947 u32 attention;
1948 bool frag_pn_check = true, multicast_check = true;
1949
1950 if (skb_queue_empty(amsdu))
1951 return;
1952
1953 first = skb_peek(amsdu);
1954 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1955 (void *)first->data - hw->rx_desc_ops->rx_desc_size);
1956
1957 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
1958 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
1959
1960 is_mgmt = !!(rxd_attention->flags &
1961 __cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE));
1962
1963 enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0),
1964 RX_MPDU_START_INFO0_ENCRYPT_TYPE);
1965
1966 /* First MSDU's Rx descriptor in an A-MSDU contains full 802.11
1967 * decapped header. It'll be used for undecapping of each MSDU.
1968 */
1969 hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd);
1970 memcpy(first_hdr, hdr, RX_HTT_HDR_STATUS_LEN);
1971
1972 if (rx_hdr)
1973 memcpy(rx_hdr, hdr, RX_HTT_HDR_STATUS_LEN);
1974
1975 /* Each A-MSDU subframe will use the original header as the base and be
1976 * reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl.
1977 */
1978 hdr = (void *)first_hdr;
1979
1980 if (ieee80211_is_data_qos(hdr->frame_control)) {
1981 qos = ieee80211_get_qos_ctl(hdr);
1982 qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1983 }
1984
1985 /* Some attention flags are valid only in the last MSDU. */
1986 last = skb_peek_tail(amsdu);
1987 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1988 (void *)last->data - hw->rx_desc_ops->rx_desc_size);
1989
1990 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
1991 attention = __le32_to_cpu(rxd_attention->flags);
1992
1993 has_fcs_err = !!(attention & RX_ATTENTION_FLAGS_FCS_ERR);
1994 has_crypto_err = !!(attention & RX_ATTENTION_FLAGS_DECRYPT_ERR);
1995 has_tkip_err = !!(attention & RX_ATTENTION_FLAGS_TKIP_MIC_ERR);
1996 has_peer_idx_invalid = !!(attention & RX_ATTENTION_FLAGS_PEER_IDX_INVALID);
1997
1998 /* Note: If hardware captures an encrypted frame that it can't decrypt,
1999 * e.g. due to fcs error, missing peer or invalid key data it will
2000 * report the frame as raw.
2001 */
2002 is_decrypted = (enctype != HTT_RX_MPDU_ENCRYPT_NONE &&
2003 !has_fcs_err &&
2004 !has_crypto_err &&
2005 !has_peer_idx_invalid);
2006
2007 /* Clear per-MPDU flags while leaving per-PPDU flags intact. */
2008 status->flag &= ~(RX_FLAG_FAILED_FCS_CRC |
2009 RX_FLAG_MMIC_ERROR |
2010 RX_FLAG_DECRYPTED |
2011 RX_FLAG_IV_STRIPPED |
2012 RX_FLAG_ONLY_MONITOR |
2013 RX_FLAG_MMIC_STRIPPED);
2014
2015 if (has_fcs_err)
2016 status->flag |= RX_FLAG_FAILED_FCS_CRC;
2017
2018 if (has_tkip_err)
2019 status->flag |= RX_FLAG_MMIC_ERROR;
2020
2021 if (err) {
2022 if (has_fcs_err)
2023 *err = ATH10K_PKT_RX_ERR_FCS;
2024 else if (has_tkip_err)
2025 *err = ATH10K_PKT_RX_ERR_TKIP;
2026 else if (has_crypto_err)
2027 *err = ATH10K_PKT_RX_ERR_CRYPT;
2028 else if (has_peer_idx_invalid)
2029 *err = ATH10K_PKT_RX_ERR_PEER_IDX_INVAL;
2030 }
2031
2032 /* Firmware reports all necessary management frames via WMI already.
2033 * They are not reported to monitor interfaces at all so pass the ones
2034 * coming via HTT to monitor interfaces instead. This simplifies
2035 * matters a lot.
2036 */
2037 if (is_mgmt)
2038 status->flag |= RX_FLAG_ONLY_MONITOR;
2039
2040 if (is_decrypted) {
2041 status->flag |= RX_FLAG_DECRYPTED;
2042
2043 if (likely(!is_mgmt))
2044 status->flag |= RX_FLAG_MMIC_STRIPPED;
2045
2046 if (fill_crypt_header)
2047 status->flag |= RX_FLAG_MIC_STRIPPED |
2048 RX_FLAG_ICV_STRIPPED;
2049 else
2050 status->flag |= RX_FLAG_IV_STRIPPED;
2051 }
2052
2053 skb_queue_walk(amsdu, msdu) {
2054 if (frag && !fill_crypt_header && is_decrypted &&
2055 enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2)
2056 frag_pn_check = ath10k_htt_rx_h_frag_pn_check(ar,
2057 msdu,
2058 peer_id,
2059 enctype);
2060
2061 if (frag)
2062 multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar,
2063 msdu);
2064
2065 if (!frag_pn_check || !multicast_check) {
2066 /* Discard the fragment with invalid PN or multicast DA
2067 */
2068 temp = msdu->prev;
2069 __skb_unlink(msdu, amsdu);
2070 dev_kfree_skb_any(msdu);
2071 msdu = temp;
2072 frag_pn_check = true;
2073 multicast_check = true;
2074 continue;
2075 }
2076
2077 ath10k_htt_rx_h_csum_offload(&ar->hw_params, msdu);
2078
2079 if (frag && !fill_crypt_header &&
2080 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
2081 status->flag &= ~RX_FLAG_MMIC_STRIPPED;
2082
2083 ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype,
2084 is_decrypted);
2085
2086 /* Undecapping involves copying the original 802.11 header back
2087 * to sk_buff. If frame is protected and hardware has decrypted
2088 * it then remove the protected bit.
2089 */
2090 if (!is_decrypted)
2091 continue;
2092 if (is_mgmt)
2093 continue;
2094
2095 if (fill_crypt_header)
2096 continue;
2097
2098 hdr = (void *)msdu->data;
2099 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2100
2101 if (frag && !fill_crypt_header &&
2102 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
2103 status->flag &= ~RX_FLAG_IV_STRIPPED &
2104 ~RX_FLAG_MMIC_STRIPPED;
2105 }
2106}
2107
2108static void ath10k_htt_rx_h_enqueue(struct ath10k *ar,
2109 struct sk_buff_head *amsdu,
2110 struct ieee80211_rx_status *status)
2111{
2112 struct sk_buff *msdu;
2113 struct sk_buff *first_subframe;
2114
2115 first_subframe = skb_peek(amsdu);
2116
2117 while ((msdu = __skb_dequeue(amsdu))) {
2118 /* Setup per-MSDU flags */
2119 if (skb_queue_empty(amsdu))
2120 status->flag &= ~RX_FLAG_AMSDU_MORE;
2121 else
2122 status->flag |= RX_FLAG_AMSDU_MORE;
2123
2124 if (msdu == first_subframe) {
2125 first_subframe = NULL;
2126 status->flag &= ~RX_FLAG_ALLOW_SAME_PN;
2127 } else {
2128 status->flag |= RX_FLAG_ALLOW_SAME_PN;
2129 }
2130
2131 ath10k_htt_rx_h_queue_msdu(ar, status, msdu);
2132 }
2133}
2134
2135static int ath10k_unchain_msdu(struct sk_buff_head *amsdu,
2136 unsigned long *unchain_cnt)
2137{
2138 struct sk_buff *skb, *first;
2139 int space;
2140 int total_len = 0;
2141 int amsdu_len = skb_queue_len(amsdu);
2142
2143 /* TODO: Might could optimize this by using
2144 * skb_try_coalesce or similar method to
2145 * decrease copying, or maybe get mac80211 to
2146 * provide a way to just receive a list of
2147 * skb?
2148 */
2149
2150 first = __skb_dequeue(amsdu);
2151
2152 /* Allocate total length all at once. */
2153 skb_queue_walk(amsdu, skb)
2154 total_len += skb->len;
2155
2156 space = total_len - skb_tailroom(first);
2157 if ((space > 0) &&
2158 (pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0)) {
2159 /* TODO: bump some rx-oom error stat */
2160 /* put it back together so we can free the
2161 * whole list at once.
2162 */
2163 __skb_queue_head(amsdu, first);
2164 return -1;
2165 }
2166
2167 /* Walk list again, copying contents into
2168 * msdu_head
2169 */
2170 while ((skb = __skb_dequeue(amsdu))) {
2171 skb_copy_from_linear_data(skb, skb_put(first, skb->len),
2172 skb->len);
2173 dev_kfree_skb_any(skb);
2174 }
2175
2176 __skb_queue_head(amsdu, first);
2177
2178 *unchain_cnt += amsdu_len - 1;
2179
2180 return 0;
2181}
2182
2183static void ath10k_htt_rx_h_unchain(struct ath10k *ar,
2184 struct sk_buff_head *amsdu,
2185 unsigned long *drop_cnt,
2186 unsigned long *unchain_cnt)
2187{
2188 struct sk_buff *first;
2189 struct ath10k_hw_params *hw = &ar->hw_params;
2190 struct htt_rx_desc *rxd;
2191 struct rx_msdu_start_common *rxd_msdu_start_common;
2192 struct rx_frag_info_common *rxd_frag_info;
2193 enum rx_msdu_decap_format decap;
2194
2195 first = skb_peek(amsdu);
2196 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
2197 (void *)first->data - hw->rx_desc_ops->rx_desc_size);
2198
2199 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
2200 rxd_frag_info = ath10k_htt_rx_desc_get_frag_info(hw, rxd);
2201 decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1),
2202 RX_MSDU_START_INFO1_DECAP_FORMAT);
2203
2204 /* FIXME: Current unchaining logic can only handle simple case of raw
2205 * msdu chaining. If decapping is other than raw the chaining may be
2206 * more complex and this isn't handled by the current code. Don't even
2207 * try re-constructing such frames - it'll be pretty much garbage.
2208 */
2209 if (decap != RX_MSDU_DECAP_RAW ||
2210 skb_queue_len(amsdu) != 1 + rxd_frag_info->ring2_more_count) {
2211 *drop_cnt += skb_queue_len(amsdu);
2212 __skb_queue_purge(amsdu);
2213 return;
2214 }
2215
2216 ath10k_unchain_msdu(amsdu, unchain_cnt);
2217}
2218
2219static bool ath10k_htt_rx_validate_amsdu(struct ath10k *ar,
2220 struct sk_buff_head *amsdu)
2221{
2222 u8 *subframe_hdr;
2223 struct sk_buff *first;
2224 bool is_first, is_last;
2225 struct ath10k_hw_params *hw = &ar->hw_params;
2226 struct htt_rx_desc *rxd;
2227 struct rx_msdu_end_common *rxd_msdu_end_common;
2228 struct rx_mpdu_start *rxd_mpdu_start;
2229 struct ieee80211_hdr *hdr;
2230 size_t hdr_len, crypto_len;
2231 enum htt_rx_mpdu_encrypt_type enctype;
2232 int bytes_aligned = ar->hw_params.decap_align_bytes;
2233
2234 first = skb_peek(amsdu);
2235
2236 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
2237 (void *)first->data - hw->rx_desc_ops->rx_desc_size);
2238
2239 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
2240 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
2241 hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd);
2242
2243 is_first = !!(rxd_msdu_end_common->info0 &
2244 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
2245 is_last = !!(rxd_msdu_end_common->info0 &
2246 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
2247
2248 /* Return in case of non-aggregated msdu */
2249 if (is_first && is_last)
2250 return true;
2251
2252 /* First msdu flag is not set for the first msdu of the list */
2253 if (!is_first)
2254 return false;
2255
2256 enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0),
2257 RX_MPDU_START_INFO0_ENCRYPT_TYPE);
2258
2259 hdr_len = ieee80211_hdrlen(hdr->frame_control);
2260 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
2261
2262 subframe_hdr = (u8 *)hdr + round_up(hdr_len, bytes_aligned) +
2263 crypto_len;
2264
2265 /* Validate if the amsdu has a proper first subframe.
2266 * There are chances a single msdu can be received as amsdu when
2267 * the unauthenticated amsdu flag of a QoS header
2268 * gets flipped in non-SPP AMSDU's, in such cases the first
2269 * subframe has llc/snap header in place of a valid da.
2270 * return false if the da matches rfc1042 pattern
2271 */
2272 if (ether_addr_equal(subframe_hdr, rfc1042_header))
2273 return false;
2274
2275 return true;
2276}
2277
2278static bool ath10k_htt_rx_amsdu_allowed(struct ath10k *ar,
2279 struct sk_buff_head *amsdu,
2280 struct ieee80211_rx_status *rx_status)
2281{
2282 if (!rx_status->freq) {
2283 ath10k_dbg(ar, ATH10K_DBG_HTT, "no channel configured; ignoring frame(s)!\n");
2284 return false;
2285 }
2286
2287 if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags)) {
2288 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx cac running\n");
2289 return false;
2290 }
2291
2292 if (!ath10k_htt_rx_validate_amsdu(ar, amsdu)) {
2293 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid amsdu received\n");
2294 return false;
2295 }
2296
2297 return true;
2298}
2299
2300static void ath10k_htt_rx_h_filter(struct ath10k *ar,
2301 struct sk_buff_head *amsdu,
2302 struct ieee80211_rx_status *rx_status,
2303 unsigned long *drop_cnt)
2304{
2305 if (skb_queue_empty(amsdu))
2306 return;
2307
2308 if (ath10k_htt_rx_amsdu_allowed(ar, amsdu, rx_status))
2309 return;
2310
2311 if (drop_cnt)
2312 *drop_cnt += skb_queue_len(amsdu);
2313
2314 __skb_queue_purge(amsdu);
2315}
2316
2317static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt)
2318{
2319 struct ath10k *ar = htt->ar;
2320 struct ieee80211_rx_status *rx_status = &htt->rx_status;
2321 struct sk_buff_head amsdu;
2322 int ret;
2323 unsigned long drop_cnt = 0;
2324 unsigned long unchain_cnt = 0;
2325 unsigned long drop_cnt_filter = 0;
2326 unsigned long msdus_to_queue, num_msdus;
2327 enum ath10k_pkt_rx_err err = ATH10K_PKT_RX_ERR_MAX;
2328 u8 first_hdr[RX_HTT_HDR_STATUS_LEN];
2329
2330 __skb_queue_head_init(&amsdu);
2331
2332 spin_lock_bh(&htt->rx_ring.lock);
2333 if (htt->rx_confused) {
2334 spin_unlock_bh(&htt->rx_ring.lock);
2335 return -EIO;
2336 }
2337 ret = ath10k_htt_rx_amsdu_pop(htt, &amsdu);
2338 spin_unlock_bh(&htt->rx_ring.lock);
2339
2340 if (ret < 0) {
2341 ath10k_warn(ar, "rx ring became corrupted: %d\n", ret);
2342 __skb_queue_purge(&amsdu);
2343 /* FIXME: It's probably a good idea to reboot the
2344 * device instead of leaving it inoperable.
2345 */
2346 htt->rx_confused = true;
2347 return ret;
2348 }
2349
2350 num_msdus = skb_queue_len(&amsdu);
2351
2352 ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff);
2353
2354 /* only for ret = 1 indicates chained msdus */
2355 if (ret > 0)
2356 ath10k_htt_rx_h_unchain(ar, &amsdu, &drop_cnt, &unchain_cnt);
2357
2358 ath10k_htt_rx_h_filter(ar, &amsdu, rx_status, &drop_cnt_filter);
2359 ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err, 0,
2360 false);
2361 msdus_to_queue = skb_queue_len(&amsdu);
2362 ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status);
2363
2364 ath10k_sta_update_rx_tid_stats(ar, first_hdr, num_msdus, err,
2365 unchain_cnt, drop_cnt, drop_cnt_filter,
2366 msdus_to_queue);
2367
2368 return 0;
2369}
2370
2371static void ath10k_htt_rx_mpdu_desc_pn_hl(struct htt_hl_rx_desc *rx_desc,
2372 union htt_rx_pn_t *pn,
2373 int pn_len_bits)
2374{
2375 switch (pn_len_bits) {
2376 case 48:
2377 pn->pn48 = __le32_to_cpu(rx_desc->pn_31_0) +
2378 ((u64)(__le32_to_cpu(rx_desc->u0.pn_63_32) & 0xFFFF) << 32);
2379 break;
2380 case 24:
2381 pn->pn24 = __le32_to_cpu(rx_desc->pn_31_0);
2382 break;
2383 }
2384}
2385
2386static bool ath10k_htt_rx_pn_cmp48(union htt_rx_pn_t *new_pn,
2387 union htt_rx_pn_t *old_pn)
2388{
2389 return ((new_pn->pn48 & 0xffffffffffffULL) <=
2390 (old_pn->pn48 & 0xffffffffffffULL));
2391}
2392
2393static bool ath10k_htt_rx_pn_check_replay_hl(struct ath10k *ar,
2394 struct ath10k_peer *peer,
2395 struct htt_rx_indication_hl *rx)
2396{
2397 bool last_pn_valid, pn_invalid = false;
2398 enum htt_txrx_sec_cast_type sec_index;
2399 enum htt_security_types sec_type;
2400 union htt_rx_pn_t new_pn = {0};
2401 struct htt_hl_rx_desc *rx_desc;
2402 union htt_rx_pn_t *last_pn;
2403 u32 rx_desc_info, tid;
2404 int num_mpdu_ranges;
2405
2406 lockdep_assert_held(&ar->data_lock);
2407
2408 if (!peer)
2409 return false;
2410
2411 if (!(rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU))
2412 return false;
2413
2414 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2415 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2416
2417 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges];
2418 rx_desc_info = __le32_to_cpu(rx_desc->info);
2419
2420 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED))
2421 return false;
2422
2423 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2424 last_pn_valid = peer->tids_last_pn_valid[tid];
2425 last_pn = &peer->tids_last_pn[tid];
2426
2427 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST))
2428 sec_index = HTT_TXRX_SEC_MCAST;
2429 else
2430 sec_index = HTT_TXRX_SEC_UCAST;
2431
2432 sec_type = peer->rx_pn[sec_index].sec_type;
2433 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2434
2435 if (sec_type != HTT_SECURITY_AES_CCMP &&
2436 sec_type != HTT_SECURITY_TKIP &&
2437 sec_type != HTT_SECURITY_TKIP_NOMIC)
2438 return false;
2439
2440 if (last_pn_valid)
2441 pn_invalid = ath10k_htt_rx_pn_cmp48(&new_pn, last_pn);
2442 else
2443 peer->tids_last_pn_valid[tid] = true;
2444
2445 if (!pn_invalid)
2446 last_pn->pn48 = new_pn.pn48;
2447
2448 return pn_invalid;
2449}
2450
2451static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt,
2452 struct htt_rx_indication_hl *rx,
2453 struct sk_buff *skb,
2454 enum htt_rx_pn_check_type check_pn_type,
2455 enum htt_rx_tkip_demic_type tkip_mic_type)
2456{
2457 struct ath10k *ar = htt->ar;
2458 struct ath10k_peer *peer;
2459 struct htt_rx_indication_mpdu_range *mpdu_ranges;
2460 struct fw_rx_desc_hl *fw_desc;
2461 enum htt_txrx_sec_cast_type sec_index;
2462 enum htt_security_types sec_type;
2463 union htt_rx_pn_t new_pn = {0};
2464 struct htt_hl_rx_desc *rx_desc;
2465 struct ieee80211_hdr *hdr;
2466 struct ieee80211_rx_status *rx_status;
2467 u16 peer_id;
2468 u8 rx_desc_len;
2469 int num_mpdu_ranges;
2470 size_t tot_hdr_len;
2471 struct ieee80211_channel *ch;
2472 bool pn_invalid, qos, first_msdu;
2473 u32 tid, rx_desc_info;
2474
2475 peer_id = __le16_to_cpu(rx->hdr.peer_id);
2476 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2477
2478 spin_lock_bh(&ar->data_lock);
2479 peer = ath10k_peer_find_by_id(ar, peer_id);
2480 spin_unlock_bh(&ar->data_lock);
2481 if (!peer && peer_id != HTT_INVALID_PEERID)
2482 ath10k_warn(ar, "Got RX ind from invalid peer: %u\n", peer_id);
2483
2484 if (!peer)
2485 return true;
2486
2487 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2488 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2489 mpdu_ranges = htt_rx_ind_get_mpdu_ranges_hl(rx);
2490 fw_desc = &rx->fw_desc;
2491 rx_desc_len = fw_desc->len;
2492
2493 if (fw_desc->u.bits.discard) {
2494 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n");
2495 goto err;
2496 }
2497
2498 /* I have not yet seen any case where num_mpdu_ranges > 1.
2499 * qcacld does not seem handle that case either, so we introduce the
2500 * same limitation here as well.
2501 */
2502 if (num_mpdu_ranges > 1)
2503 ath10k_warn(ar,
2504 "Unsupported number of MPDU ranges: %d, ignoring all but the first\n",
2505 num_mpdu_ranges);
2506
2507 if (mpdu_ranges->mpdu_range_status !=
2508 HTT_RX_IND_MPDU_STATUS_OK &&
2509 mpdu_ranges->mpdu_range_status !=
2510 HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) {
2511 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt mpdu_range_status %d\n",
2512 mpdu_ranges->mpdu_range_status);
2513 goto err;
2514 }
2515
2516 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges];
2517 rx_desc_info = __le32_to_cpu(rx_desc->info);
2518
2519 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST))
2520 sec_index = HTT_TXRX_SEC_MCAST;
2521 else
2522 sec_index = HTT_TXRX_SEC_UCAST;
2523
2524 sec_type = peer->rx_pn[sec_index].sec_type;
2525 first_msdu = rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU;
2526
2527 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2528
2529 if (check_pn_type == HTT_RX_PN_CHECK && tid >= IEEE80211_NUM_TIDS) {
2530 spin_lock_bh(&ar->data_lock);
2531 pn_invalid = ath10k_htt_rx_pn_check_replay_hl(ar, peer, rx);
2532 spin_unlock_bh(&ar->data_lock);
2533
2534 if (pn_invalid)
2535 goto err;
2536 }
2537
2538 /* Strip off all headers before the MAC header before delivery to
2539 * mac80211
2540 */
2541 tot_hdr_len = sizeof(struct htt_resp_hdr) + sizeof(rx->hdr) +
2542 sizeof(rx->ppdu) + sizeof(rx->prefix) +
2543 sizeof(rx->fw_desc) +
2544 sizeof(*mpdu_ranges) * num_mpdu_ranges + rx_desc_len;
2545
2546 skb_pull(skb, tot_hdr_len);
2547
2548 hdr = (struct ieee80211_hdr *)skb->data;
2549 qos = ieee80211_is_data_qos(hdr->frame_control);
2550
2551 rx_status = IEEE80211_SKB_RXCB(skb);
2552 memset(rx_status, 0, sizeof(*rx_status));
2553
2554 if (rx->ppdu.combined_rssi == 0) {
2555 /* SDIO firmware does not provide signal */
2556 rx_status->signal = 0;
2557 rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL;
2558 } else {
2559 rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
2560 rx->ppdu.combined_rssi;
2561 rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
2562 }
2563
2564 spin_lock_bh(&ar->data_lock);
2565 ch = ar->scan_channel;
2566 if (!ch)
2567 ch = ar->rx_channel;
2568 if (!ch)
2569 ch = ath10k_htt_rx_h_any_channel(ar);
2570 if (!ch)
2571 ch = ar->tgt_oper_chan;
2572 spin_unlock_bh(&ar->data_lock);
2573
2574 if (ch) {
2575 rx_status->band = ch->band;
2576 rx_status->freq = ch->center_freq;
2577 }
2578 if (rx->fw_desc.flags & FW_RX_DESC_FLAGS_LAST_MSDU)
2579 rx_status->flag &= ~RX_FLAG_AMSDU_MORE;
2580 else
2581 rx_status->flag |= RX_FLAG_AMSDU_MORE;
2582
2583 /* Not entirely sure about this, but all frames from the chipset has
2584 * the protected flag set even though they have already been decrypted.
2585 * Unmasking this flag is necessary in order for mac80211 not to drop
2586 * the frame.
2587 * TODO: Verify this is always the case or find out a way to check
2588 * if there has been hw decryption.
2589 */
2590 if (ieee80211_has_protected(hdr->frame_control)) {
2591 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2592 rx_status->flag |= RX_FLAG_DECRYPTED |
2593 RX_FLAG_IV_STRIPPED |
2594 RX_FLAG_MMIC_STRIPPED;
2595
2596 if (tid < IEEE80211_NUM_TIDS &&
2597 first_msdu &&
2598 check_pn_type == HTT_RX_PN_CHECK &&
2599 (sec_type == HTT_SECURITY_AES_CCMP ||
2600 sec_type == HTT_SECURITY_TKIP ||
2601 sec_type == HTT_SECURITY_TKIP_NOMIC)) {
2602 u8 offset, *ivp, i;
2603 s8 keyidx = 0;
2604 __le64 pn48 = cpu_to_le64(new_pn.pn48);
2605
2606 hdr = (struct ieee80211_hdr *)skb->data;
2607 offset = ieee80211_hdrlen(hdr->frame_control);
2608 hdr->frame_control |= __cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2609 rx_status->flag &= ~RX_FLAG_IV_STRIPPED;
2610
2611 memmove(skb->data - IEEE80211_CCMP_HDR_LEN,
2612 skb->data, offset);
2613 skb_push(skb, IEEE80211_CCMP_HDR_LEN);
2614 ivp = skb->data + offset;
2615 memset(skb->data + offset, 0, IEEE80211_CCMP_HDR_LEN);
2616 /* Ext IV */
2617 ivp[IEEE80211_WEP_IV_LEN - 1] |= ATH10K_IEEE80211_EXTIV;
2618
2619 for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
2620 if (peer->keys[i] &&
2621 peer->keys[i]->flags & IEEE80211_KEY_FLAG_PAIRWISE)
2622 keyidx = peer->keys[i]->keyidx;
2623 }
2624
2625 /* Key ID */
2626 ivp[IEEE80211_WEP_IV_LEN - 1] |= keyidx << 6;
2627
2628 if (sec_type == HTT_SECURITY_AES_CCMP) {
2629 rx_status->flag |= RX_FLAG_MIC_STRIPPED;
2630 /* pn 0, pn 1 */
2631 memcpy(skb->data + offset, &pn48, 2);
2632 /* pn 1, pn 3 , pn 34 , pn 5 */
2633 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4);
2634 } else {
2635 rx_status->flag |= RX_FLAG_ICV_STRIPPED;
2636 /* TSC 0 */
2637 memcpy(skb->data + offset + 2, &pn48, 1);
2638 /* TSC 1 */
2639 memcpy(skb->data + offset, ((u8 *)&pn48) + 1, 1);
2640 /* TSC 2 , TSC 3 , TSC 4 , TSC 5*/
2641 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4);
2642 }
2643 }
2644 }
2645
2646 if (tkip_mic_type == HTT_RX_TKIP_MIC)
2647 rx_status->flag &= ~RX_FLAG_IV_STRIPPED &
2648 ~RX_FLAG_MMIC_STRIPPED;
2649
2650 if (mpdu_ranges->mpdu_range_status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR)
2651 rx_status->flag |= RX_FLAG_MMIC_ERROR;
2652
2653 if (!qos && tid < IEEE80211_NUM_TIDS) {
2654 u8 offset;
2655 __le16 qos_ctrl = 0;
2656
2657 hdr = (struct ieee80211_hdr *)skb->data;
2658 offset = ieee80211_hdrlen(hdr->frame_control);
2659
2660 hdr->frame_control |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
2661 memmove(skb->data - IEEE80211_QOS_CTL_LEN, skb->data, offset);
2662 skb_push(skb, IEEE80211_QOS_CTL_LEN);
2663 qos_ctrl = cpu_to_le16(tid);
2664 memcpy(skb->data + offset, &qos_ctrl, IEEE80211_QOS_CTL_LEN);
2665 }
2666
2667 if (ar->napi.dev)
2668 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi);
2669 else
2670 ieee80211_rx_ni(ar->hw, skb);
2671
2672 /* We have delivered the skb to the upper layers (mac80211) so we
2673 * must not free it.
2674 */
2675 return false;
2676err:
2677 /* Tell the caller that it must free the skb since we have not
2678 * consumed it
2679 */
2680 return true;
2681}
2682
2683static int ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff *skb,
2684 u16 head_len,
2685 u16 hdr_len)
2686{
2687 u8 *ivp, *orig_hdr;
2688
2689 orig_hdr = skb->data;
2690 ivp = orig_hdr + hdr_len + head_len;
2691
2692 /* the ExtIV bit is always set to 1 for TKIP */
2693 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2694 return -EINVAL;
2695
2696 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
2697 skb_pull(skb, IEEE80211_TKIP_IV_LEN);
2698 skb_trim(skb, skb->len - ATH10K_IEEE80211_TKIP_MICLEN);
2699 return 0;
2700}
2701
2702static int ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff *skb,
2703 u16 head_len,
2704 u16 hdr_len)
2705{
2706 u8 *ivp, *orig_hdr;
2707
2708 orig_hdr = skb->data;
2709 ivp = orig_hdr + hdr_len + head_len;
2710
2711 /* the ExtIV bit is always set to 1 for TKIP */
2712 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2713 return -EINVAL;
2714
2715 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
2716 skb_pull(skb, IEEE80211_TKIP_IV_LEN);
2717 skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN);
2718 return 0;
2719}
2720
2721static int ath10k_htt_rx_frag_ccmp_decap(struct sk_buff *skb,
2722 u16 head_len,
2723 u16 hdr_len)
2724{
2725 u8 *ivp, *orig_hdr;
2726
2727 orig_hdr = skb->data;
2728 ivp = orig_hdr + hdr_len + head_len;
2729
2730 /* the ExtIV bit is always set to 1 for CCMP */
2731 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2732 return -EINVAL;
2733
2734 skb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN);
2735 memmove(orig_hdr + IEEE80211_CCMP_HDR_LEN, orig_hdr, head_len + hdr_len);
2736 skb_pull(skb, IEEE80211_CCMP_HDR_LEN);
2737 return 0;
2738}
2739
2740static int ath10k_htt_rx_frag_wep_decap(struct sk_buff *skb,
2741 u16 head_len,
2742 u16 hdr_len)
2743{
2744 u8 *orig_hdr;
2745
2746 orig_hdr = skb->data;
2747
2748 memmove(orig_hdr + IEEE80211_WEP_IV_LEN,
2749 orig_hdr, head_len + hdr_len);
2750 skb_pull(skb, IEEE80211_WEP_IV_LEN);
2751 skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN);
2752 return 0;
2753}
2754
2755static bool ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt *htt,
2756 struct htt_rx_fragment_indication *rx,
2757 struct sk_buff *skb)
2758{
2759 struct ath10k *ar = htt->ar;
2760 enum htt_rx_tkip_demic_type tkip_mic = HTT_RX_NON_TKIP_MIC;
2761 enum htt_txrx_sec_cast_type sec_index;
2762 struct htt_rx_indication_hl *rx_hl;
2763 enum htt_security_types sec_type;
2764 u32 tid, frag, seq, rx_desc_info;
2765 union htt_rx_pn_t new_pn = {0};
2766 struct htt_hl_rx_desc *rx_desc;
2767 u16 peer_id, sc, hdr_space;
2768 union htt_rx_pn_t *last_pn;
2769 struct ieee80211_hdr *hdr;
2770 int ret, num_mpdu_ranges;
2771 struct ath10k_peer *peer;
2772 struct htt_resp *resp;
2773 size_t tot_hdr_len;
2774
2775 resp = (struct htt_resp *)(skb->data + HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
2776 skb_pull(skb, HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
2777 skb_trim(skb, skb->len - FCS_LEN);
2778
2779 peer_id = __le16_to_cpu(rx->peer_id);
2780 rx_hl = (struct htt_rx_indication_hl *)(&resp->rx_ind_hl);
2781
2782 spin_lock_bh(&ar->data_lock);
2783 peer = ath10k_peer_find_by_id(ar, peer_id);
2784 if (!peer) {
2785 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer: %u\n", peer_id);
2786 goto err;
2787 }
2788
2789 num_mpdu_ranges = MS(__le32_to_cpu(rx_hl->hdr.info1),
2790 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2791
2792 tot_hdr_len = sizeof(struct htt_resp_hdr) +
2793 sizeof(rx_hl->hdr) +
2794 sizeof(rx_hl->ppdu) +
2795 sizeof(rx_hl->prefix) +
2796 sizeof(rx_hl->fw_desc) +
2797 sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges;
2798
2799 tid = MS(rx_hl->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2800 rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len);
2801 rx_desc_info = __le32_to_cpu(rx_desc->info);
2802
2803 hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len);
2804
2805 if (is_multicast_ether_addr(hdr->addr1)) {
2806 /* Discard the fragment with multicast DA */
2807 goto err;
2808 }
2809
2810 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) {
2811 spin_unlock_bh(&ar->data_lock);
2812 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
2813 HTT_RX_NON_PN_CHECK,
2814 HTT_RX_NON_TKIP_MIC);
2815 }
2816
2817 if (ieee80211_has_retry(hdr->frame_control))
2818 goto err;
2819
2820 hdr_space = ieee80211_hdrlen(hdr->frame_control);
2821 sc = __le16_to_cpu(hdr->seq_ctrl);
2822 seq = IEEE80211_SEQ_TO_SN(sc);
2823 frag = sc & IEEE80211_SCTL_FRAG;
2824
2825 sec_index = MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST) ?
2826 HTT_TXRX_SEC_MCAST : HTT_TXRX_SEC_UCAST;
2827 sec_type = peer->rx_pn[sec_index].sec_type;
2828 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2829
2830 switch (sec_type) {
2831 case HTT_SECURITY_TKIP:
2832 tkip_mic = HTT_RX_TKIP_MIC;
2833 ret = ath10k_htt_rx_frag_tkip_decap_withmic(skb,
2834 tot_hdr_len +
2835 rx_hl->fw_desc.len,
2836 hdr_space);
2837 if (ret)
2838 goto err;
2839 break;
2840 case HTT_SECURITY_TKIP_NOMIC:
2841 ret = ath10k_htt_rx_frag_tkip_decap_nomic(skb,
2842 tot_hdr_len +
2843 rx_hl->fw_desc.len,
2844 hdr_space);
2845 if (ret)
2846 goto err;
2847 break;
2848 case HTT_SECURITY_AES_CCMP:
2849 ret = ath10k_htt_rx_frag_ccmp_decap(skb,
2850 tot_hdr_len + rx_hl->fw_desc.len,
2851 hdr_space);
2852 if (ret)
2853 goto err;
2854 break;
2855 case HTT_SECURITY_WEP128:
2856 case HTT_SECURITY_WEP104:
2857 case HTT_SECURITY_WEP40:
2858 ret = ath10k_htt_rx_frag_wep_decap(skb,
2859 tot_hdr_len + rx_hl->fw_desc.len,
2860 hdr_space);
2861 if (ret)
2862 goto err;
2863 break;
2864 default:
2865 break;
2866 }
2867
2868 resp = (struct htt_resp *)(skb->data);
2869
2870 if (sec_type != HTT_SECURITY_AES_CCMP &&
2871 sec_type != HTT_SECURITY_TKIP &&
2872 sec_type != HTT_SECURITY_TKIP_NOMIC) {
2873 spin_unlock_bh(&ar->data_lock);
2874 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
2875 HTT_RX_NON_PN_CHECK,
2876 HTT_RX_NON_TKIP_MIC);
2877 }
2878
2879 last_pn = &peer->frag_tids_last_pn[tid];
2880
2881 if (frag == 0) {
2882 if (ath10k_htt_rx_pn_check_replay_hl(ar, peer, &resp->rx_ind_hl))
2883 goto err;
2884
2885 last_pn->pn48 = new_pn.pn48;
2886 peer->frag_tids_seq[tid] = seq;
2887 } else if (sec_type == HTT_SECURITY_AES_CCMP) {
2888 if (seq != peer->frag_tids_seq[tid])
2889 goto err;
2890
2891 if (new_pn.pn48 != last_pn->pn48 + 1)
2892 goto err;
2893
2894 last_pn->pn48 = new_pn.pn48;
2895 last_pn = &peer->tids_last_pn[tid];
2896 last_pn->pn48 = new_pn.pn48;
2897 }
2898
2899 spin_unlock_bh(&ar->data_lock);
2900
2901 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
2902 HTT_RX_NON_PN_CHECK, tkip_mic);
2903
2904err:
2905 spin_unlock_bh(&ar->data_lock);
2906
2907 /* Tell the caller that it must free the skb since we have not
2908 * consumed it
2909 */
2910 return true;
2911}
2912
2913static void ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt *htt,
2914 struct htt_rx_indication *rx)
2915{
2916 struct ath10k *ar = htt->ar;
2917 struct htt_rx_indication_mpdu_range *mpdu_ranges;
2918 int num_mpdu_ranges;
2919 int i, mpdu_count = 0;
2920 u16 peer_id;
2921 u8 tid;
2922
2923 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2924 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2925 peer_id = __le16_to_cpu(rx->hdr.peer_id);
2926 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2927
2928 mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx);
2929
2930 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ",
2931 rx, struct_size(rx, mpdu_ranges, num_mpdu_ranges));
2932
2933 for (i = 0; i < num_mpdu_ranges; i++)
2934 mpdu_count += mpdu_ranges[i].mpdu_count;
2935
2936 atomic_add(mpdu_count, &htt->num_mpdus_ready);
2937
2938 ath10k_sta_update_rx_tid_stats_ampdu(ar, peer_id, tid, mpdu_ranges,
2939 num_mpdu_ranges);
2940}
2941
2942static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar,
2943 struct sk_buff *skb)
2944{
2945 struct ath10k_htt *htt = &ar->htt;
2946 struct htt_resp *resp = (struct htt_resp *)skb->data;
2947 struct htt_tx_done tx_done = {};
2948 int status = MS(resp->data_tx_completion.flags, HTT_DATA_TX_STATUS);
2949 __le16 msdu_id, *msdus;
2950 bool rssi_enabled = false;
2951 u8 msdu_count = 0, num_airtime_records, tid;
2952 int i, htt_pad = 0;
2953 struct htt_data_tx_compl_ppdu_dur *ppdu_info;
2954 struct ath10k_peer *peer;
2955 u16 ppdu_info_offset = 0, peer_id;
2956 u32 tx_duration;
2957
2958 switch (status) {
2959 case HTT_DATA_TX_STATUS_NO_ACK:
2960 tx_done.status = HTT_TX_COMPL_STATE_NOACK;
2961 break;
2962 case HTT_DATA_TX_STATUS_OK:
2963 tx_done.status = HTT_TX_COMPL_STATE_ACK;
2964 break;
2965 case HTT_DATA_TX_STATUS_DISCARD:
2966 case HTT_DATA_TX_STATUS_POSTPONE:
2967 case HTT_DATA_TX_STATUS_DOWNLOAD_FAIL:
2968 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
2969 break;
2970 default:
2971 ath10k_warn(ar, "unhandled tx completion status %d\n", status);
2972 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
2973 break;
2974 }
2975
2976 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx completion num_msdus %d\n",
2977 resp->data_tx_completion.num_msdus);
2978
2979 msdu_count = resp->data_tx_completion.num_msdus;
2980 msdus = resp->data_tx_completion.msdus;
2981 rssi_enabled = ath10k_is_rssi_enable(&ar->hw_params, resp);
2982
2983 if (rssi_enabled)
2984 htt_pad = ath10k_tx_data_rssi_get_pad_bytes(&ar->hw_params,
2985 resp);
2986
2987 for (i = 0; i < msdu_count; i++) {
2988 msdu_id = msdus[i];
2989 tx_done.msdu_id = __le16_to_cpu(msdu_id);
2990
2991 if (rssi_enabled) {
2992 /* Total no of MSDUs should be even,
2993 * if odd MSDUs are sent firmware fills
2994 * last msdu id with 0xffff
2995 */
2996 if (msdu_count & 0x01) {
2997 msdu_id = msdus[msdu_count + i + 1 + htt_pad];
2998 tx_done.ack_rssi = __le16_to_cpu(msdu_id);
2999 } else {
3000 msdu_id = msdus[msdu_count + i + htt_pad];
3001 tx_done.ack_rssi = __le16_to_cpu(msdu_id);
3002 }
3003 }
3004
3005 /* kfifo_put: In practice firmware shouldn't fire off per-CE
3006 * interrupt and main interrupt (MSI/-X range case) for the same
3007 * HTC service so it should be safe to use kfifo_put w/o lock.
3008 *
3009 * From kfifo_put() documentation:
3010 * Note that with only one concurrent reader and one concurrent
3011 * writer, you don't need extra locking to use these macro.
3012 */
3013 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) {
3014 ath10k_txrx_tx_unref(htt, &tx_done);
3015 } else if (!kfifo_put(&htt->txdone_fifo, tx_done)) {
3016 ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n",
3017 tx_done.msdu_id, tx_done.status);
3018 ath10k_txrx_tx_unref(htt, &tx_done);
3019 }
3020 }
3021
3022 if (!(resp->data_tx_completion.flags2 & HTT_TX_CMPL_FLAG_PPDU_DURATION_PRESENT))
3023 return;
3024
3025 ppdu_info_offset = (msdu_count & 0x01) ? msdu_count + 1 : msdu_count;
3026
3027 if (rssi_enabled)
3028 ppdu_info_offset += ppdu_info_offset;
3029
3030 if (resp->data_tx_completion.flags2 &
3031 (HTT_TX_CMPL_FLAG_PPID_PRESENT | HTT_TX_CMPL_FLAG_PA_PRESENT))
3032 ppdu_info_offset += 2;
3033
3034 ppdu_info = (struct htt_data_tx_compl_ppdu_dur *)&msdus[ppdu_info_offset];
3035 num_airtime_records = FIELD_GET(HTT_TX_COMPL_PPDU_DUR_INFO0_NUM_ENTRIES_MASK,
3036 __le32_to_cpu(ppdu_info->info0));
3037
3038 for (i = 0; i < num_airtime_records; i++) {
3039 struct htt_data_tx_ppdu_dur *ppdu_dur;
3040 u32 info0;
3041
3042 ppdu_dur = &ppdu_info->ppdu_dur[i];
3043 info0 = __le32_to_cpu(ppdu_dur->info0);
3044
3045 peer_id = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_PEER_ID_MASK,
3046 info0);
3047 rcu_read_lock();
3048 spin_lock_bh(&ar->data_lock);
3049
3050 peer = ath10k_peer_find_by_id(ar, peer_id);
3051 if (!peer || !peer->sta) {
3052 spin_unlock_bh(&ar->data_lock);
3053 rcu_read_unlock();
3054 continue;
3055 }
3056
3057 tid = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_TID_MASK, info0) &
3058 IEEE80211_QOS_CTL_TID_MASK;
3059 tx_duration = __le32_to_cpu(ppdu_dur->tx_duration);
3060
3061 ieee80211_sta_register_airtime(peer->sta, tid, tx_duration, 0);
3062
3063 spin_unlock_bh(&ar->data_lock);
3064 rcu_read_unlock();
3065 }
3066}
3067
3068static void ath10k_htt_rx_addba(struct ath10k *ar, struct htt_resp *resp)
3069{
3070 struct htt_rx_addba *ev = &resp->rx_addba;
3071 struct ath10k_peer *peer;
3072 struct ath10k_vif *arvif;
3073 u16 info0, tid, peer_id;
3074
3075 info0 = __le16_to_cpu(ev->info0);
3076 tid = MS(info0, HTT_RX_BA_INFO0_TID);
3077 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID);
3078
3079 ath10k_dbg(ar, ATH10K_DBG_HTT,
3080 "htt rx addba tid %u peer_id %u size %u\n",
3081 tid, peer_id, ev->window_size);
3082
3083 spin_lock_bh(&ar->data_lock);
3084 peer = ath10k_peer_find_by_id(ar, peer_id);
3085 if (!peer) {
3086 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n",
3087 peer_id);
3088 spin_unlock_bh(&ar->data_lock);
3089 return;
3090 }
3091
3092 arvif = ath10k_get_arvif(ar, peer->vdev_id);
3093 if (!arvif) {
3094 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n",
3095 peer->vdev_id);
3096 spin_unlock_bh(&ar->data_lock);
3097 return;
3098 }
3099
3100 ath10k_dbg(ar, ATH10K_DBG_HTT,
3101 "htt rx start rx ba session sta %pM tid %u size %u\n",
3102 peer->addr, tid, ev->window_size);
3103
3104 ieee80211_start_rx_ba_session_offl(arvif->vif, peer->addr, tid);
3105 spin_unlock_bh(&ar->data_lock);
3106}
3107
3108static void ath10k_htt_rx_delba(struct ath10k *ar, struct htt_resp *resp)
3109{
3110 struct htt_rx_delba *ev = &resp->rx_delba;
3111 struct ath10k_peer *peer;
3112 struct ath10k_vif *arvif;
3113 u16 info0, tid, peer_id;
3114
3115 info0 = __le16_to_cpu(ev->info0);
3116 tid = MS(info0, HTT_RX_BA_INFO0_TID);
3117 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID);
3118
3119 ath10k_dbg(ar, ATH10K_DBG_HTT,
3120 "htt rx delba tid %u peer_id %u\n",
3121 tid, peer_id);
3122
3123 spin_lock_bh(&ar->data_lock);
3124 peer = ath10k_peer_find_by_id(ar, peer_id);
3125 if (!peer) {
3126 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n",
3127 peer_id);
3128 spin_unlock_bh(&ar->data_lock);
3129 return;
3130 }
3131
3132 arvif = ath10k_get_arvif(ar, peer->vdev_id);
3133 if (!arvif) {
3134 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n",
3135 peer->vdev_id);
3136 spin_unlock_bh(&ar->data_lock);
3137 return;
3138 }
3139
3140 ath10k_dbg(ar, ATH10K_DBG_HTT,
3141 "htt rx stop rx ba session sta %pM tid %u\n",
3142 peer->addr, tid);
3143
3144 ieee80211_stop_rx_ba_session_offl(arvif->vif, peer->addr, tid);
3145 spin_unlock_bh(&ar->data_lock);
3146}
3147
3148static int ath10k_htt_rx_extract_amsdu(struct ath10k_hw_params *hw,
3149 struct sk_buff_head *list,
3150 struct sk_buff_head *amsdu)
3151{
3152 struct sk_buff *msdu;
3153 struct htt_rx_desc *rxd;
3154 struct rx_msdu_end_common *rxd_msdu_end_common;
3155
3156 if (skb_queue_empty(list))
3157 return -ENOBUFS;
3158
3159 if (WARN_ON(!skb_queue_empty(amsdu)))
3160 return -EINVAL;
3161
3162 while ((msdu = __skb_dequeue(list))) {
3163 __skb_queue_tail(amsdu, msdu);
3164
3165 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
3166 (void *)msdu->data -
3167 hw->rx_desc_ops->rx_desc_size);
3168
3169 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
3170 if (rxd_msdu_end_common->info0 &
3171 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))
3172 break;
3173 }
3174
3175 msdu = skb_peek_tail(amsdu);
3176 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
3177 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
3178
3179 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
3180 if (!(rxd_msdu_end_common->info0 &
3181 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))) {
3182 skb_queue_splice_init(amsdu, list);
3183 return -EAGAIN;
3184 }
3185
3186 return 0;
3187}
3188
3189static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status,
3190 struct sk_buff *skb)
3191{
3192 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
3193
3194 if (!ieee80211_has_protected(hdr->frame_control))
3195 return;
3196
3197 /* Offloaded frames are already decrypted but firmware insists they are
3198 * protected in the 802.11 header. Strip the flag. Otherwise mac80211
3199 * will drop the frame.
3200 */
3201
3202 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
3203 status->flag |= RX_FLAG_DECRYPTED |
3204 RX_FLAG_IV_STRIPPED |
3205 RX_FLAG_MMIC_STRIPPED;
3206}
3207
3208static void ath10k_htt_rx_h_rx_offload(struct ath10k *ar,
3209 struct sk_buff_head *list)
3210{
3211 struct ath10k_htt *htt = &ar->htt;
3212 struct ieee80211_rx_status *status = &htt->rx_status;
3213 struct htt_rx_offload_msdu *rx;
3214 struct sk_buff *msdu;
3215 size_t offset;
3216
3217 while ((msdu = __skb_dequeue(list))) {
3218 /* Offloaded frames don't have Rx descriptor. Instead they have
3219 * a short meta information header.
3220 */
3221
3222 rx = (void *)msdu->data;
3223
3224 skb_put(msdu, sizeof(*rx));
3225 skb_pull(msdu, sizeof(*rx));
3226
3227 if (skb_tailroom(msdu) < __le16_to_cpu(rx->msdu_len)) {
3228 ath10k_warn(ar, "dropping frame: offloaded rx msdu is too long!\n");
3229 dev_kfree_skb_any(msdu);
3230 continue;
3231 }
3232
3233 skb_put(msdu, __le16_to_cpu(rx->msdu_len));
3234
3235 /* Offloaded rx header length isn't multiple of 2 nor 4 so the
3236 * actual payload is unaligned. Align the frame. Otherwise
3237 * mac80211 complains. This shouldn't reduce performance much
3238 * because these offloaded frames are rare.
3239 */
3240 offset = 4 - ((unsigned long)msdu->data & 3);
3241 skb_put(msdu, offset);
3242 memmove(msdu->data + offset, msdu->data, msdu->len);
3243 skb_pull(msdu, offset);
3244
3245 /* FIXME: The frame is NWifi. Re-construct QoS Control
3246 * if possible later.
3247 */
3248
3249 memset(status, 0, sizeof(*status));
3250 status->flag |= RX_FLAG_NO_SIGNAL_VAL;
3251
3252 ath10k_htt_rx_h_rx_offload_prot(status, msdu);
3253 ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id);
3254 ath10k_htt_rx_h_queue_msdu(ar, status, msdu);
3255 }
3256}
3257
3258static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb)
3259{
3260 struct ath10k_htt *htt = &ar->htt;
3261 struct htt_resp *resp = (void *)skb->data;
3262 struct ieee80211_rx_status *status = &htt->rx_status;
3263 struct sk_buff_head list;
3264 struct sk_buff_head amsdu;
3265 u16 peer_id;
3266 u16 msdu_count;
3267 u8 vdev_id;
3268 u8 tid;
3269 bool offload;
3270 bool frag;
3271 int ret;
3272
3273 lockdep_assert_held(&htt->rx_ring.lock);
3274
3275 if (htt->rx_confused)
3276 return -EIO;
3277
3278 skb_pull(skb, sizeof(resp->hdr));
3279 skb_pull(skb, sizeof(resp->rx_in_ord_ind));
3280
3281 peer_id = __le16_to_cpu(resp->rx_in_ord_ind.peer_id);
3282 msdu_count = __le16_to_cpu(resp->rx_in_ord_ind.msdu_count);
3283 vdev_id = resp->rx_in_ord_ind.vdev_id;
3284 tid = SM(resp->rx_in_ord_ind.info, HTT_RX_IN_ORD_IND_INFO_TID);
3285 offload = !!(resp->rx_in_ord_ind.info &
3286 HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
3287 frag = !!(resp->rx_in_ord_ind.info & HTT_RX_IN_ORD_IND_INFO_FRAG_MASK);
3288
3289 ath10k_dbg(ar, ATH10K_DBG_HTT,
3290 "htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n",
3291 vdev_id, peer_id, tid, offload, frag, msdu_count);
3292
3293 if (skb->len < msdu_count * sizeof(*resp->rx_in_ord_ind.msdu_descs32)) {
3294 ath10k_warn(ar, "dropping invalid in order rx indication\n");
3295 return -EINVAL;
3296 }
3297
3298 /* The event can deliver more than 1 A-MSDU. Each A-MSDU is later
3299 * extracted and processed.
3300 */
3301 __skb_queue_head_init(&list);
3302 if (ar->hw_params.target_64bit)
3303 ret = ath10k_htt_rx_pop_paddr64_list(htt, &resp->rx_in_ord_ind,
3304 &list);
3305 else
3306 ret = ath10k_htt_rx_pop_paddr32_list(htt, &resp->rx_in_ord_ind,
3307 &list);
3308
3309 if (ret < 0) {
3310 ath10k_warn(ar, "failed to pop paddr list: %d\n", ret);
3311 htt->rx_confused = true;
3312 return -EIO;
3313 }
3314
3315 /* Offloaded frames are very different and need to be handled
3316 * separately.
3317 */
3318 if (offload)
3319 ath10k_htt_rx_h_rx_offload(ar, &list);
3320
3321 while (!skb_queue_empty(&list)) {
3322 __skb_queue_head_init(&amsdu);
3323 ret = ath10k_htt_rx_extract_amsdu(&ar->hw_params, &list, &amsdu);
3324 switch (ret) {
3325 case 0:
3326 /* Note: The in-order indication may report interleaved
3327 * frames from different PPDUs meaning reported rx rate
3328 * to mac80211 isn't accurate/reliable. It's still
3329 * better to report something than nothing though. This
3330 * should still give an idea about rx rate to the user.
3331 */
3332 ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id);
3333 ath10k_htt_rx_h_filter(ar, &amsdu, status, NULL);
3334 ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false, NULL,
3335 NULL, peer_id, frag);
3336 ath10k_htt_rx_h_enqueue(ar, &amsdu, status);
3337 break;
3338 case -EAGAIN:
3339 fallthrough;
3340 default:
3341 /* Should not happen. */
3342 ath10k_warn(ar, "failed to extract amsdu: %d\n", ret);
3343 htt->rx_confused = true;
3344 __skb_queue_purge(&list);
3345 return -EIO;
3346 }
3347 }
3348 return ret;
3349}
3350
3351static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar,
3352 const __le32 *resp_ids,
3353 int num_resp_ids)
3354{
3355 int i;
3356 u32 resp_id;
3357
3358 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm num_resp_ids %d\n",
3359 num_resp_ids);
3360
3361 for (i = 0; i < num_resp_ids; i++) {
3362 resp_id = le32_to_cpu(resp_ids[i]);
3363
3364 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm resp_id %u\n",
3365 resp_id);
3366
3367 /* TODO: free resp_id */
3368 }
3369}
3370
3371static void ath10k_htt_rx_tx_fetch_ind(struct ath10k *ar, struct sk_buff *skb)
3372{
3373 struct ieee80211_hw *hw = ar->hw;
3374 struct ieee80211_txq *txq;
3375 struct htt_resp *resp = (struct htt_resp *)skb->data;
3376 struct htt_tx_fetch_record *record;
3377 size_t len;
3378 size_t max_num_bytes;
3379 size_t max_num_msdus;
3380 size_t num_bytes;
3381 size_t num_msdus;
3382 const __le32 *resp_ids;
3383 u16 num_records;
3384 u16 num_resp_ids;
3385 u16 peer_id;
3386 u8 tid;
3387 int ret;
3388 int i;
3389 bool may_tx;
3390
3391 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind\n");
3392
3393 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_ind);
3394 if (unlikely(skb->len < len)) {
3395 ath10k_warn(ar, "received corrupted tx_fetch_ind event: buffer too short\n");
3396 return;
3397 }
3398
3399 num_records = le16_to_cpu(resp->tx_fetch_ind.num_records);
3400 num_resp_ids = le16_to_cpu(resp->tx_fetch_ind.num_resp_ids);
3401
3402 len += sizeof(resp->tx_fetch_ind.records[0]) * num_records;
3403 len += sizeof(resp->tx_fetch_ind.resp_ids[0]) * num_resp_ids;
3404
3405 if (unlikely(skb->len < len)) {
3406 ath10k_warn(ar, "received corrupted tx_fetch_ind event: too many records/resp_ids\n");
3407 return;
3408 }
3409
3410 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind num records %u num resps %u seq %u\n",
3411 num_records, num_resp_ids,
3412 le16_to_cpu(resp->tx_fetch_ind.fetch_seq_num));
3413
3414 if (!ar->htt.tx_q_state.enabled) {
3415 ath10k_warn(ar, "received unexpected tx_fetch_ind event: not enabled\n");
3416 return;
3417 }
3418
3419 if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH) {
3420 ath10k_warn(ar, "received unexpected tx_fetch_ind event: in push mode\n");
3421 return;
3422 }
3423
3424 rcu_read_lock();
3425
3426 for (i = 0; i < num_records; i++) {
3427 record = &resp->tx_fetch_ind.records[i];
3428 peer_id = MS(le16_to_cpu(record->info),
3429 HTT_TX_FETCH_RECORD_INFO_PEER_ID);
3430 tid = MS(le16_to_cpu(record->info),
3431 HTT_TX_FETCH_RECORD_INFO_TID);
3432 max_num_msdus = le16_to_cpu(record->num_msdus);
3433 max_num_bytes = le32_to_cpu(record->num_bytes);
3434
3435 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch record %i peer_id %u tid %u msdus %zu bytes %zu\n",
3436 i, peer_id, tid, max_num_msdus, max_num_bytes);
3437
3438 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
3439 unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
3440 ath10k_warn(ar, "received out of range peer_id %u tid %u\n",
3441 peer_id, tid);
3442 continue;
3443 }
3444
3445 spin_lock_bh(&ar->data_lock);
3446 txq = ath10k_mac_txq_lookup(ar, peer_id, tid);
3447 spin_unlock_bh(&ar->data_lock);
3448
3449 /* It is okay to release the lock and use txq because RCU read
3450 * lock is held.
3451 */
3452
3453 if (unlikely(!txq)) {
3454 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n",
3455 peer_id, tid);
3456 continue;
3457 }
3458
3459 num_msdus = 0;
3460 num_bytes = 0;
3461
3462 ieee80211_txq_schedule_start(hw, txq->ac);
3463 may_tx = ieee80211_txq_may_transmit(hw, txq);
3464 while (num_msdus < max_num_msdus &&
3465 num_bytes < max_num_bytes) {
3466 if (!may_tx)
3467 break;
3468
3469 ret = ath10k_mac_tx_push_txq(hw, txq);
3470 if (ret < 0)
3471 break;
3472
3473 num_msdus++;
3474 num_bytes += ret;
3475 }
3476 ieee80211_return_txq(hw, txq, false);
3477 ieee80211_txq_schedule_end(hw, txq->ac);
3478
3479 record->num_msdus = cpu_to_le16(num_msdus);
3480 record->num_bytes = cpu_to_le32(num_bytes);
3481
3482 ath10k_htt_tx_txq_recalc(hw, txq);
3483 }
3484
3485 rcu_read_unlock();
3486
3487 resp_ids = ath10k_htt_get_tx_fetch_ind_resp_ids(&resp->tx_fetch_ind);
3488 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, resp_ids, num_resp_ids);
3489
3490 ret = ath10k_htt_tx_fetch_resp(ar,
3491 resp->tx_fetch_ind.token,
3492 resp->tx_fetch_ind.fetch_seq_num,
3493 resp->tx_fetch_ind.records,
3494 num_records);
3495 if (unlikely(ret)) {
3496 ath10k_warn(ar, "failed to submit tx fetch resp for token 0x%08x: %d\n",
3497 le32_to_cpu(resp->tx_fetch_ind.token), ret);
3498 /* FIXME: request fw restart */
3499 }
3500
3501 ath10k_htt_tx_txq_sync(ar);
3502}
3503
3504static void ath10k_htt_rx_tx_fetch_confirm(struct ath10k *ar,
3505 struct sk_buff *skb)
3506{
3507 const struct htt_resp *resp = (void *)skb->data;
3508 size_t len;
3509 int num_resp_ids;
3510
3511 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm\n");
3512
3513 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_confirm);
3514 if (unlikely(skb->len < len)) {
3515 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: buffer too short\n");
3516 return;
3517 }
3518
3519 num_resp_ids = le16_to_cpu(resp->tx_fetch_confirm.num_resp_ids);
3520 len += sizeof(resp->tx_fetch_confirm.resp_ids[0]) * num_resp_ids;
3521
3522 if (unlikely(skb->len < len)) {
3523 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: resp_ids buffer overflow\n");
3524 return;
3525 }
3526
3527 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar,
3528 resp->tx_fetch_confirm.resp_ids,
3529 num_resp_ids);
3530}
3531
3532static void ath10k_htt_rx_tx_mode_switch_ind(struct ath10k *ar,
3533 struct sk_buff *skb)
3534{
3535 const struct htt_resp *resp = (void *)skb->data;
3536 const struct htt_tx_mode_switch_record *record;
3537 struct ieee80211_txq *txq;
3538 struct ath10k_txq *artxq;
3539 size_t len;
3540 size_t num_records;
3541 enum htt_tx_mode_switch_mode mode;
3542 bool enable;
3543 u16 info0;
3544 u16 info1;
3545 u16 threshold;
3546 u16 peer_id;
3547 u8 tid;
3548 int i;
3549
3550 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx mode switch ind\n");
3551
3552 len = sizeof(resp->hdr) + sizeof(resp->tx_mode_switch_ind);
3553 if (unlikely(skb->len < len)) {
3554 ath10k_warn(ar, "received corrupted tx_mode_switch_ind event: buffer too short\n");
3555 return;
3556 }
3557
3558 info0 = le16_to_cpu(resp->tx_mode_switch_ind.info0);
3559 info1 = le16_to_cpu(resp->tx_mode_switch_ind.info1);
3560
3561 enable = !!(info0 & HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE);
3562 num_records = MS(info0, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD);
3563 mode = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_MODE);
3564 threshold = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD);
3565
3566 ath10k_dbg(ar, ATH10K_DBG_HTT,
3567 "htt rx tx mode switch ind info0 0x%04x info1 0x%04x enable %d num records %zd mode %d threshold %u\n",
3568 info0, info1, enable, num_records, mode, threshold);
3569
3570 len += sizeof(resp->tx_mode_switch_ind.records[0]) * num_records;
3571
3572 if (unlikely(skb->len < len)) {
3573 ath10k_warn(ar, "received corrupted tx_mode_switch_mode_ind event: too many records\n");
3574 return;
3575 }
3576
3577 switch (mode) {
3578 case HTT_TX_MODE_SWITCH_PUSH:
3579 case HTT_TX_MODE_SWITCH_PUSH_PULL:
3580 break;
3581 default:
3582 ath10k_warn(ar, "received invalid tx_mode_switch_mode_ind mode %d, ignoring\n",
3583 mode);
3584 return;
3585 }
3586
3587 if (!enable)
3588 return;
3589
3590 ar->htt.tx_q_state.enabled = enable;
3591 ar->htt.tx_q_state.mode = mode;
3592 ar->htt.tx_q_state.num_push_allowed = threshold;
3593
3594 rcu_read_lock();
3595
3596 for (i = 0; i < num_records; i++) {
3597 record = &resp->tx_mode_switch_ind.records[i];
3598 info0 = le16_to_cpu(record->info0);
3599 peer_id = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID);
3600 tid = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_TID);
3601
3602 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
3603 unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
3604 ath10k_warn(ar, "received out of range peer_id %u tid %u\n",
3605 peer_id, tid);
3606 continue;
3607 }
3608
3609 spin_lock_bh(&ar->data_lock);
3610 txq = ath10k_mac_txq_lookup(ar, peer_id, tid);
3611 spin_unlock_bh(&ar->data_lock);
3612
3613 /* It is okay to release the lock and use txq because RCU read
3614 * lock is held.
3615 */
3616
3617 if (unlikely(!txq)) {
3618 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n",
3619 peer_id, tid);
3620 continue;
3621 }
3622
3623 spin_lock_bh(&ar->htt.tx_lock);
3624 artxq = (void *)txq->drv_priv;
3625 artxq->num_push_allowed = le16_to_cpu(record->num_max_msdus);
3626 spin_unlock_bh(&ar->htt.tx_lock);
3627 }
3628
3629 rcu_read_unlock();
3630
3631 ath10k_mac_tx_push_pending(ar);
3632}
3633
3634void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
3635{
3636 bool release;
3637
3638 release = ath10k_htt_t2h_msg_handler(ar, skb);
3639
3640 /* Free the indication buffer */
3641 if (release)
3642 dev_kfree_skb_any(skb);
3643}
3644
3645static inline s8 ath10k_get_legacy_rate_idx(struct ath10k *ar, u8 rate)
3646{
3647 static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12,
3648 18, 24, 36, 48, 54};
3649 int i;
3650
3651 for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) {
3652 if (rate == legacy_rates[i])
3653 return i;
3654 }
3655
3656 ath10k_warn(ar, "Invalid legacy rate %d peer stats", rate);
3657 return -EINVAL;
3658}
3659
3660static void
3661ath10k_accumulate_per_peer_tx_stats(struct ath10k *ar,
3662 struct ath10k_sta *arsta,
3663 struct ath10k_per_peer_tx_stats *pstats,
3664 s8 legacy_rate_idx)
3665{
3666 struct rate_info *txrate = &arsta->txrate;
3667 struct ath10k_htt_tx_stats *tx_stats;
3668 int idx, ht_idx, gi, mcs, bw, nss;
3669 unsigned long flags;
3670
3671 if (!arsta->tx_stats)
3672 return;
3673
3674 tx_stats = arsta->tx_stats;
3675 flags = txrate->flags;
3676 gi = test_bit(ATH10K_RATE_INFO_FLAGS_SGI_BIT, &flags);
3677 mcs = ATH10K_HW_MCS_RATE(pstats->ratecode);
3678 bw = txrate->bw;
3679 nss = txrate->nss;
3680 ht_idx = mcs + (nss - 1) * 8;
3681 idx = mcs * 8 + 8 * 10 * (nss - 1);
3682 idx += bw * 2 + gi;
3683
3684#define STATS_OP_FMT(name) tx_stats->stats[ATH10K_STATS_TYPE_##name]
3685
3686 if (txrate->flags & RATE_INFO_FLAGS_VHT_MCS) {
3687 STATS_OP_FMT(SUCC).vht[0][mcs] += pstats->succ_bytes;
3688 STATS_OP_FMT(SUCC).vht[1][mcs] += pstats->succ_pkts;
3689 STATS_OP_FMT(FAIL).vht[0][mcs] += pstats->failed_bytes;
3690 STATS_OP_FMT(FAIL).vht[1][mcs] += pstats->failed_pkts;
3691 STATS_OP_FMT(RETRY).vht[0][mcs] += pstats->retry_bytes;
3692 STATS_OP_FMT(RETRY).vht[1][mcs] += pstats->retry_pkts;
3693 } else if (txrate->flags & RATE_INFO_FLAGS_MCS) {
3694 STATS_OP_FMT(SUCC).ht[0][ht_idx] += pstats->succ_bytes;
3695 STATS_OP_FMT(SUCC).ht[1][ht_idx] += pstats->succ_pkts;
3696 STATS_OP_FMT(FAIL).ht[0][ht_idx] += pstats->failed_bytes;
3697 STATS_OP_FMT(FAIL).ht[1][ht_idx] += pstats->failed_pkts;
3698 STATS_OP_FMT(RETRY).ht[0][ht_idx] += pstats->retry_bytes;
3699 STATS_OP_FMT(RETRY).ht[1][ht_idx] += pstats->retry_pkts;
3700 } else {
3701 mcs = legacy_rate_idx;
3702
3703 STATS_OP_FMT(SUCC).legacy[0][mcs] += pstats->succ_bytes;
3704 STATS_OP_FMT(SUCC).legacy[1][mcs] += pstats->succ_pkts;
3705 STATS_OP_FMT(FAIL).legacy[0][mcs] += pstats->failed_bytes;
3706 STATS_OP_FMT(FAIL).legacy[1][mcs] += pstats->failed_pkts;
3707 STATS_OP_FMT(RETRY).legacy[0][mcs] += pstats->retry_bytes;
3708 STATS_OP_FMT(RETRY).legacy[1][mcs] += pstats->retry_pkts;
3709 }
3710
3711 if (ATH10K_HW_AMPDU(pstats->flags)) {
3712 tx_stats->ba_fails += ATH10K_HW_BA_FAIL(pstats->flags);
3713
3714 if (txrate->flags & RATE_INFO_FLAGS_MCS) {
3715 STATS_OP_FMT(AMPDU).ht[0][ht_idx] +=
3716 pstats->succ_bytes + pstats->retry_bytes;
3717 STATS_OP_FMT(AMPDU).ht[1][ht_idx] +=
3718 pstats->succ_pkts + pstats->retry_pkts;
3719 } else {
3720 STATS_OP_FMT(AMPDU).vht[0][mcs] +=
3721 pstats->succ_bytes + pstats->retry_bytes;
3722 STATS_OP_FMT(AMPDU).vht[1][mcs] +=
3723 pstats->succ_pkts + pstats->retry_pkts;
3724 }
3725 STATS_OP_FMT(AMPDU).bw[0][bw] +=
3726 pstats->succ_bytes + pstats->retry_bytes;
3727 STATS_OP_FMT(AMPDU).nss[0][nss - 1] +=
3728 pstats->succ_bytes + pstats->retry_bytes;
3729 STATS_OP_FMT(AMPDU).gi[0][gi] +=
3730 pstats->succ_bytes + pstats->retry_bytes;
3731 STATS_OP_FMT(AMPDU).rate_table[0][idx] +=
3732 pstats->succ_bytes + pstats->retry_bytes;
3733 STATS_OP_FMT(AMPDU).bw[1][bw] +=
3734 pstats->succ_pkts + pstats->retry_pkts;
3735 STATS_OP_FMT(AMPDU).nss[1][nss - 1] +=
3736 pstats->succ_pkts + pstats->retry_pkts;
3737 STATS_OP_FMT(AMPDU).gi[1][gi] +=
3738 pstats->succ_pkts + pstats->retry_pkts;
3739 STATS_OP_FMT(AMPDU).rate_table[1][idx] +=
3740 pstats->succ_pkts + pstats->retry_pkts;
3741 } else {
3742 tx_stats->ack_fails +=
3743 ATH10K_HW_BA_FAIL(pstats->flags);
3744 }
3745
3746 STATS_OP_FMT(SUCC).bw[0][bw] += pstats->succ_bytes;
3747 STATS_OP_FMT(SUCC).nss[0][nss - 1] += pstats->succ_bytes;
3748 STATS_OP_FMT(SUCC).gi[0][gi] += pstats->succ_bytes;
3749
3750 STATS_OP_FMT(SUCC).bw[1][bw] += pstats->succ_pkts;
3751 STATS_OP_FMT(SUCC).nss[1][nss - 1] += pstats->succ_pkts;
3752 STATS_OP_FMT(SUCC).gi[1][gi] += pstats->succ_pkts;
3753
3754 STATS_OP_FMT(FAIL).bw[0][bw] += pstats->failed_bytes;
3755 STATS_OP_FMT(FAIL).nss[0][nss - 1] += pstats->failed_bytes;
3756 STATS_OP_FMT(FAIL).gi[0][gi] += pstats->failed_bytes;
3757
3758 STATS_OP_FMT(FAIL).bw[1][bw] += pstats->failed_pkts;
3759 STATS_OP_FMT(FAIL).nss[1][nss - 1] += pstats->failed_pkts;
3760 STATS_OP_FMT(FAIL).gi[1][gi] += pstats->failed_pkts;
3761
3762 STATS_OP_FMT(RETRY).bw[0][bw] += pstats->retry_bytes;
3763 STATS_OP_FMT(RETRY).nss[0][nss - 1] += pstats->retry_bytes;
3764 STATS_OP_FMT(RETRY).gi[0][gi] += pstats->retry_bytes;
3765
3766 STATS_OP_FMT(RETRY).bw[1][bw] += pstats->retry_pkts;
3767 STATS_OP_FMT(RETRY).nss[1][nss - 1] += pstats->retry_pkts;
3768 STATS_OP_FMT(RETRY).gi[1][gi] += pstats->retry_pkts;
3769
3770 if (txrate->flags >= RATE_INFO_FLAGS_MCS) {
3771 STATS_OP_FMT(SUCC).rate_table[0][idx] += pstats->succ_bytes;
3772 STATS_OP_FMT(SUCC).rate_table[1][idx] += pstats->succ_pkts;
3773 STATS_OP_FMT(FAIL).rate_table[0][idx] += pstats->failed_bytes;
3774 STATS_OP_FMT(FAIL).rate_table[1][idx] += pstats->failed_pkts;
3775 STATS_OP_FMT(RETRY).rate_table[0][idx] += pstats->retry_bytes;
3776 STATS_OP_FMT(RETRY).rate_table[1][idx] += pstats->retry_pkts;
3777 }
3778
3779 tx_stats->tx_duration += pstats->duration;
3780}
3781
3782static void
3783ath10k_update_per_peer_tx_stats(struct ath10k *ar,
3784 struct ieee80211_sta *sta,
3785 struct ath10k_per_peer_tx_stats *peer_stats)
3786{
3787 struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
3788 struct ieee80211_chanctx_conf *conf = NULL;
3789 u8 rate = 0, sgi;
3790 s8 rate_idx = 0;
3791 bool skip_auto_rate;
3792 struct rate_info txrate;
3793
3794 lockdep_assert_held(&ar->data_lock);
3795
3796 txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode);
3797 txrate.bw = ATH10K_HW_BW(peer_stats->flags);
3798 txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode);
3799 txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode);
3800 sgi = ATH10K_HW_GI(peer_stats->flags);
3801 skip_auto_rate = ATH10K_FW_SKIPPED_RATE_CTRL(peer_stats->flags);
3802
3803 /* Firmware's rate control skips broadcast/management frames,
3804 * if host has configure fixed rates and in some other special cases.
3805 */
3806 if (skip_auto_rate)
3807 return;
3808
3809 if (txrate.flags == WMI_RATE_PREAMBLE_VHT && txrate.mcs > 9) {
3810 ath10k_warn(ar, "Invalid VHT mcs %d peer stats", txrate.mcs);
3811 return;
3812 }
3813
3814 if (txrate.flags == WMI_RATE_PREAMBLE_HT &&
3815 (txrate.mcs > 7 || txrate.nss < 1)) {
3816 ath10k_warn(ar, "Invalid HT mcs %d nss %d peer stats",
3817 txrate.mcs, txrate.nss);
3818 return;
3819 }
3820
3821 memset(&arsta->txrate, 0, sizeof(arsta->txrate));
3822 memset(&arsta->tx_info.status, 0, sizeof(arsta->tx_info.status));
3823 if (txrate.flags == WMI_RATE_PREAMBLE_CCK ||
3824 txrate.flags == WMI_RATE_PREAMBLE_OFDM) {
3825 rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode);
3826 /* This is hacky, FW sends CCK rate 5.5Mbps as 6 */
3827 if (rate == 6 && txrate.flags == WMI_RATE_PREAMBLE_CCK)
3828 rate = 5;
3829 rate_idx = ath10k_get_legacy_rate_idx(ar, rate);
3830 if (rate_idx < 0)
3831 return;
3832 arsta->txrate.legacy = rate;
3833 } else if (txrate.flags == WMI_RATE_PREAMBLE_HT) {
3834 arsta->txrate.flags = RATE_INFO_FLAGS_MCS;
3835 arsta->txrate.mcs = txrate.mcs + 8 * (txrate.nss - 1);
3836 } else {
3837 arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS;
3838 arsta->txrate.mcs = txrate.mcs;
3839 }
3840
3841 switch (txrate.flags) {
3842 case WMI_RATE_PREAMBLE_OFDM:
3843 if (arsta->arvif && arsta->arvif->vif)
3844 conf = rcu_dereference(arsta->arvif->vif->bss_conf.chanctx_conf);
3845 if (conf && conf->def.chan->band == NL80211_BAND_5GHZ)
3846 arsta->tx_info.status.rates[0].idx = rate_idx - 4;
3847 break;
3848 case WMI_RATE_PREAMBLE_CCK:
3849 arsta->tx_info.status.rates[0].idx = rate_idx;
3850 if (sgi)
3851 arsta->tx_info.status.rates[0].flags |=
3852 (IEEE80211_TX_RC_USE_SHORT_PREAMBLE |
3853 IEEE80211_TX_RC_SHORT_GI);
3854 break;
3855 case WMI_RATE_PREAMBLE_HT:
3856 arsta->tx_info.status.rates[0].idx =
3857 txrate.mcs + ((txrate.nss - 1) * 8);
3858 if (sgi)
3859 arsta->tx_info.status.rates[0].flags |=
3860 IEEE80211_TX_RC_SHORT_GI;
3861 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_MCS;
3862 break;
3863 case WMI_RATE_PREAMBLE_VHT:
3864 ieee80211_rate_set_vht(&arsta->tx_info.status.rates[0],
3865 txrate.mcs, txrate.nss);
3866 if (sgi)
3867 arsta->tx_info.status.rates[0].flags |=
3868 IEEE80211_TX_RC_SHORT_GI;
3869 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_VHT_MCS;
3870 break;
3871 }
3872
3873 arsta->txrate.nss = txrate.nss;
3874 arsta->txrate.bw = ath10k_bw_to_mac80211_bw(txrate.bw);
3875 arsta->last_tx_bitrate = cfg80211_calculate_bitrate(&arsta->txrate);
3876 if (sgi)
3877 arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
3878
3879 switch (arsta->txrate.bw) {
3880 case RATE_INFO_BW_40:
3881 arsta->tx_info.status.rates[0].flags |=
3882 IEEE80211_TX_RC_40_MHZ_WIDTH;
3883 break;
3884 case RATE_INFO_BW_80:
3885 arsta->tx_info.status.rates[0].flags |=
3886 IEEE80211_TX_RC_80_MHZ_WIDTH;
3887 break;
3888 case RATE_INFO_BW_160:
3889 arsta->tx_info.status.rates[0].flags |=
3890 IEEE80211_TX_RC_160_MHZ_WIDTH;
3891 break;
3892 }
3893
3894 if (peer_stats->succ_pkts) {
3895 arsta->tx_info.flags = IEEE80211_TX_STAT_ACK;
3896 arsta->tx_info.status.rates[0].count = 1;
3897 ieee80211_tx_rate_update(ar->hw, sta, &arsta->tx_info);
3898 }
3899
3900 if (ar->htt.disable_tx_comp) {
3901 arsta->tx_failed += peer_stats->failed_pkts;
3902 ath10k_dbg(ar, ATH10K_DBG_HTT, "tx failed %d\n",
3903 arsta->tx_failed);
3904 }
3905
3906 arsta->tx_retries += peer_stats->retry_pkts;
3907 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx retries %d", arsta->tx_retries);
3908
3909 if (ath10k_debug_is_extd_tx_stats_enabled(ar))
3910 ath10k_accumulate_per_peer_tx_stats(ar, arsta, peer_stats,
3911 rate_idx);
3912}
3913
3914static void ath10k_htt_fetch_peer_stats(struct ath10k *ar,
3915 struct sk_buff *skb)
3916{
3917 struct htt_resp *resp = (struct htt_resp *)skb->data;
3918 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats;
3919 struct htt_per_peer_tx_stats_ind *tx_stats;
3920 struct ieee80211_sta *sta;
3921 struct ath10k_peer *peer;
3922 int peer_id, i;
3923 u8 ppdu_len, num_ppdu;
3924
3925 num_ppdu = resp->peer_tx_stats.num_ppdu;
3926 ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32);
3927
3928 if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) {
3929 ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len);
3930 return;
3931 }
3932
3933 tx_stats = (struct htt_per_peer_tx_stats_ind *)
3934 (resp->peer_tx_stats.payload);
3935 peer_id = __le16_to_cpu(tx_stats->peer_id);
3936
3937 rcu_read_lock();
3938 spin_lock_bh(&ar->data_lock);
3939 peer = ath10k_peer_find_by_id(ar, peer_id);
3940 if (!peer || !peer->sta) {
3941 ath10k_warn(ar, "Invalid peer id %d peer stats buffer\n",
3942 peer_id);
3943 goto out;
3944 }
3945
3946 sta = peer->sta;
3947 for (i = 0; i < num_ppdu; i++) {
3948 tx_stats = (struct htt_per_peer_tx_stats_ind *)
3949 (resp->peer_tx_stats.payload + i * ppdu_len);
3950
3951 p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes);
3952 p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes);
3953 p_tx_stats->failed_bytes =
3954 __le32_to_cpu(tx_stats->failed_bytes);
3955 p_tx_stats->ratecode = tx_stats->ratecode;
3956 p_tx_stats->flags = tx_stats->flags;
3957 p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts);
3958 p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts);
3959 p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts);
3960 p_tx_stats->duration = __le16_to_cpu(tx_stats->tx_duration);
3961
3962 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats);
3963 }
3964
3965out:
3966 spin_unlock_bh(&ar->data_lock);
3967 rcu_read_unlock();
3968}
3969
3970static void ath10k_fetch_10_2_tx_stats(struct ath10k *ar, u8 *data)
3971{
3972 struct ath10k_pktlog_hdr *hdr = (struct ath10k_pktlog_hdr *)data;
3973 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats;
3974 struct ath10k_10_2_peer_tx_stats *tx_stats;
3975 struct ieee80211_sta *sta;
3976 struct ath10k_peer *peer;
3977 u16 log_type = __le16_to_cpu(hdr->log_type);
3978 u32 peer_id = 0, i;
3979
3980 if (log_type != ATH_PKTLOG_TYPE_TX_STAT)
3981 return;
3982
3983 tx_stats = (struct ath10k_10_2_peer_tx_stats *)((hdr->payload) +
3984 ATH10K_10_2_TX_STATS_OFFSET);
3985
3986 if (!tx_stats->tx_ppdu_cnt)
3987 return;
3988
3989 peer_id = tx_stats->peer_id;
3990
3991 rcu_read_lock();
3992 spin_lock_bh(&ar->data_lock);
3993 peer = ath10k_peer_find_by_id(ar, peer_id);
3994 if (!peer || !peer->sta) {
3995 ath10k_warn(ar, "Invalid peer id %d in peer stats buffer\n",
3996 peer_id);
3997 goto out;
3998 }
3999
4000 sta = peer->sta;
4001 for (i = 0; i < tx_stats->tx_ppdu_cnt; i++) {
4002 p_tx_stats->succ_bytes =
4003 __le16_to_cpu(tx_stats->success_bytes[i]);
4004 p_tx_stats->retry_bytes =
4005 __le16_to_cpu(tx_stats->retry_bytes[i]);
4006 p_tx_stats->failed_bytes =
4007 __le16_to_cpu(tx_stats->failed_bytes[i]);
4008 p_tx_stats->ratecode = tx_stats->ratecode[i];
4009 p_tx_stats->flags = tx_stats->flags[i];
4010 p_tx_stats->succ_pkts = tx_stats->success_pkts[i];
4011 p_tx_stats->retry_pkts = tx_stats->retry_pkts[i];
4012 p_tx_stats->failed_pkts = tx_stats->failed_pkts[i];
4013
4014 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats);
4015 }
4016 spin_unlock_bh(&ar->data_lock);
4017 rcu_read_unlock();
4018
4019 return;
4020
4021out:
4022 spin_unlock_bh(&ar->data_lock);
4023 rcu_read_unlock();
4024}
4025
4026static int ath10k_htt_rx_pn_len(enum htt_security_types sec_type)
4027{
4028 switch (sec_type) {
4029 case HTT_SECURITY_TKIP:
4030 case HTT_SECURITY_TKIP_NOMIC:
4031 case HTT_SECURITY_AES_CCMP:
4032 return 48;
4033 default:
4034 return 0;
4035 }
4036}
4037
4038static void ath10k_htt_rx_sec_ind_handler(struct ath10k *ar,
4039 struct htt_security_indication *ev)
4040{
4041 enum htt_txrx_sec_cast_type sec_index;
4042 enum htt_security_types sec_type;
4043 struct ath10k_peer *peer;
4044
4045 spin_lock_bh(&ar->data_lock);
4046
4047 peer = ath10k_peer_find_by_id(ar, __le16_to_cpu(ev->peer_id));
4048 if (!peer) {
4049 ath10k_warn(ar, "failed to find peer id %d for security indication",
4050 __le16_to_cpu(ev->peer_id));
4051 goto out;
4052 }
4053
4054 sec_type = MS(ev->flags, HTT_SECURITY_TYPE);
4055
4056 if (ev->flags & HTT_SECURITY_IS_UNICAST)
4057 sec_index = HTT_TXRX_SEC_UCAST;
4058 else
4059 sec_index = HTT_TXRX_SEC_MCAST;
4060
4061 peer->rx_pn[sec_index].sec_type = sec_type;
4062 peer->rx_pn[sec_index].pn_len = ath10k_htt_rx_pn_len(sec_type);
4063
4064 memset(peer->tids_last_pn_valid, 0, sizeof(peer->tids_last_pn_valid));
4065 memset(peer->tids_last_pn, 0, sizeof(peer->tids_last_pn));
4066
4067out:
4068 spin_unlock_bh(&ar->data_lock);
4069}
4070
4071bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
4072{
4073 struct ath10k_htt *htt = &ar->htt;
4074 struct htt_resp *resp = (struct htt_resp *)skb->data;
4075 enum htt_t2h_msg_type type;
4076
4077 /* confirm alignment */
4078 if (!IS_ALIGNED((unsigned long)skb->data, 4))
4079 ath10k_warn(ar, "unaligned htt message, expect trouble\n");
4080
4081 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, msg_type: 0x%0X\n",
4082 resp->hdr.msg_type);
4083
4084 if (resp->hdr.msg_type >= ar->htt.t2h_msg_types_max) {
4085 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X",
4086 resp->hdr.msg_type, ar->htt.t2h_msg_types_max);
4087 return true;
4088 }
4089 type = ar->htt.t2h_msg_types[resp->hdr.msg_type];
4090
4091 switch (type) {
4092 case HTT_T2H_MSG_TYPE_VERSION_CONF: {
4093 htt->target_version_major = resp->ver_resp.major;
4094 htt->target_version_minor = resp->ver_resp.minor;
4095 complete(&htt->target_version_received);
4096 break;
4097 }
4098 case HTT_T2H_MSG_TYPE_RX_IND:
4099 if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) {
4100 ath10k_htt_rx_proc_rx_ind_ll(htt, &resp->rx_ind);
4101 } else {
4102 skb_queue_tail(&htt->rx_indication_head, skb);
4103 return false;
4104 }
4105 break;
4106 case HTT_T2H_MSG_TYPE_PEER_MAP: {
4107 struct htt_peer_map_event ev = {
4108 .vdev_id = resp->peer_map.vdev_id,
4109 .peer_id = __le16_to_cpu(resp->peer_map.peer_id),
4110 };
4111 memcpy(ev.addr, resp->peer_map.addr, sizeof(ev.addr));
4112 ath10k_peer_map_event(htt, &ev);
4113 break;
4114 }
4115 case HTT_T2H_MSG_TYPE_PEER_UNMAP: {
4116 struct htt_peer_unmap_event ev = {
4117 .peer_id = __le16_to_cpu(resp->peer_unmap.peer_id),
4118 };
4119 ath10k_peer_unmap_event(htt, &ev);
4120 break;
4121 }
4122 case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION: {
4123 struct htt_tx_done tx_done = {};
4124 struct ath10k_htt *htt = &ar->htt;
4125 struct ath10k_htc *htc = &ar->htc;
4126 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid];
4127 int status = __le32_to_cpu(resp->mgmt_tx_completion.status);
4128 int info = __le32_to_cpu(resp->mgmt_tx_completion.info);
4129
4130 tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id);
4131
4132 switch (status) {
4133 case HTT_MGMT_TX_STATUS_OK:
4134 tx_done.status = HTT_TX_COMPL_STATE_ACK;
4135 if (test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS,
4136 ar->wmi.svc_map) &&
4137 (resp->mgmt_tx_completion.flags &
4138 HTT_MGMT_TX_CMPL_FLAG_ACK_RSSI)) {
4139 tx_done.ack_rssi =
4140 FIELD_GET(HTT_MGMT_TX_CMPL_INFO_ACK_RSSI_MASK,
4141 info);
4142 }
4143 break;
4144 case HTT_MGMT_TX_STATUS_RETRY:
4145 tx_done.status = HTT_TX_COMPL_STATE_NOACK;
4146 break;
4147 case HTT_MGMT_TX_STATUS_DROP:
4148 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
4149 break;
4150 }
4151
4152 if (htt->disable_tx_comp) {
4153 spin_lock_bh(&htc->tx_lock);
4154 ep->tx_credits++;
4155 spin_unlock_bh(&htc->tx_lock);
4156 }
4157
4158 status = ath10k_txrx_tx_unref(htt, &tx_done);
4159 if (!status) {
4160 spin_lock_bh(&htt->tx_lock);
4161 ath10k_htt_tx_mgmt_dec_pending(htt);
4162 spin_unlock_bh(&htt->tx_lock);
4163 }
4164 break;
4165 }
4166 case HTT_T2H_MSG_TYPE_TX_COMPL_IND:
4167 ath10k_htt_rx_tx_compl_ind(htt->ar, skb);
4168 break;
4169 case HTT_T2H_MSG_TYPE_SEC_IND: {
4170 struct ath10k *ar = htt->ar;
4171 struct htt_security_indication *ev = &resp->security_indication;
4172
4173 ath10k_htt_rx_sec_ind_handler(ar, ev);
4174 ath10k_dbg(ar, ATH10K_DBG_HTT,
4175 "sec ind peer_id %d unicast %d type %d\n",
4176 __le16_to_cpu(ev->peer_id),
4177 !!(ev->flags & HTT_SECURITY_IS_UNICAST),
4178 MS(ev->flags, HTT_SECURITY_TYPE));
4179 complete(&ar->install_key_done);
4180 break;
4181 }
4182 case HTT_T2H_MSG_TYPE_RX_FRAG_IND: {
4183 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
4184 skb->data, skb->len);
4185 atomic_inc(&htt->num_mpdus_ready);
4186
4187 return ath10k_htt_rx_proc_rx_frag_ind(htt,
4188 &resp->rx_frag_ind,
4189 skb);
4190 }
4191 case HTT_T2H_MSG_TYPE_TEST:
4192 break;
4193 case HTT_T2H_MSG_TYPE_STATS_CONF:
4194 trace_ath10k_htt_stats(ar, skb->data, skb->len);
4195 break;
4196 case HTT_T2H_MSG_TYPE_TX_INSPECT_IND:
4197 /* Firmware can return tx frames if it's unable to fully
4198 * process them and suspects host may be able to fix it. ath10k
4199 * sends all tx frames as already inspected so this shouldn't
4200 * happen unless fw has a bug.
4201 */
4202 ath10k_warn(ar, "received an unexpected htt tx inspect event\n");
4203 break;
4204 case HTT_T2H_MSG_TYPE_RX_ADDBA:
4205 ath10k_htt_rx_addba(ar, resp);
4206 break;
4207 case HTT_T2H_MSG_TYPE_RX_DELBA:
4208 ath10k_htt_rx_delba(ar, resp);
4209 break;
4210 case HTT_T2H_MSG_TYPE_PKTLOG: {
4211 trace_ath10k_htt_pktlog(ar, resp->pktlog_msg.payload,
4212 skb->len -
4213 offsetof(struct htt_resp,
4214 pktlog_msg.payload));
4215
4216 if (ath10k_peer_stats_enabled(ar))
4217 ath10k_fetch_10_2_tx_stats(ar,
4218 resp->pktlog_msg.payload);
4219 break;
4220 }
4221 case HTT_T2H_MSG_TYPE_RX_FLUSH: {
4222 /* Ignore this event because mac80211 takes care of Rx
4223 * aggregation reordering.
4224 */
4225 break;
4226 }
4227 case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: {
4228 skb_queue_tail(&htt->rx_in_ord_compl_q, skb);
4229 return false;
4230 }
4231 case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: {
4232 struct ath10k_htt *htt = &ar->htt;
4233 struct ath10k_htc *htc = &ar->htc;
4234 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid];
4235 u32 msg_word = __le32_to_cpu(*(__le32 *)resp);
4236 int htt_credit_delta;
4237
4238 htt_credit_delta = HTT_TX_CREDIT_DELTA_ABS_GET(msg_word);
4239 if (HTT_TX_CREDIT_SIGN_BIT_GET(msg_word))
4240 htt_credit_delta = -htt_credit_delta;
4241
4242 ath10k_dbg(ar, ATH10K_DBG_HTT,
4243 "htt credit update delta %d\n",
4244 htt_credit_delta);
4245
4246 if (htt->disable_tx_comp) {
4247 spin_lock_bh(&htc->tx_lock);
4248 ep->tx_credits += htt_credit_delta;
4249 spin_unlock_bh(&htc->tx_lock);
4250 ath10k_dbg(ar, ATH10K_DBG_HTT,
4251 "htt credit total %d\n",
4252 ep->tx_credits);
4253 ep->ep_ops.ep_tx_credits(htc->ar);
4254 }
4255 break;
4256 }
4257 case HTT_T2H_MSG_TYPE_CHAN_CHANGE: {
4258 u32 phymode = __le32_to_cpu(resp->chan_change.phymode);
4259 u32 freq = __le32_to_cpu(resp->chan_change.freq);
4260
4261 ar->tgt_oper_chan = ieee80211_get_channel(ar->hw->wiphy, freq);
4262 ath10k_dbg(ar, ATH10K_DBG_HTT,
4263 "htt chan change freq %u phymode %s\n",
4264 freq, ath10k_wmi_phymode_str(phymode));
4265 break;
4266 }
4267 case HTT_T2H_MSG_TYPE_AGGR_CONF:
4268 break;
4269 case HTT_T2H_MSG_TYPE_TX_FETCH_IND: {
4270 struct sk_buff *tx_fetch_ind = skb_copy(skb, GFP_ATOMIC);
4271
4272 if (!tx_fetch_ind) {
4273 ath10k_warn(ar, "failed to copy htt tx fetch ind\n");
4274 break;
4275 }
4276 skb_queue_tail(&htt->tx_fetch_ind_q, tx_fetch_ind);
4277 break;
4278 }
4279 case HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM:
4280 ath10k_htt_rx_tx_fetch_confirm(ar, skb);
4281 break;
4282 case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND:
4283 ath10k_htt_rx_tx_mode_switch_ind(ar, skb);
4284 break;
4285 case HTT_T2H_MSG_TYPE_PEER_STATS:
4286 ath10k_htt_fetch_peer_stats(ar, skb);
4287 break;
4288 case HTT_T2H_MSG_TYPE_EN_STATS:
4289 default:
4290 ath10k_warn(ar, "htt event (%d) not handled\n",
4291 resp->hdr.msg_type);
4292 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
4293 skb->data, skb->len);
4294 break;
4295 }
4296 return true;
4297}
4298EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler);
4299
4300void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar,
4301 struct sk_buff *skb)
4302{
4303 trace_ath10k_htt_pktlog(ar, skb->data, skb->len);
4304 dev_kfree_skb_any(skb);
4305}
4306EXPORT_SYMBOL(ath10k_htt_rx_pktlog_completion_handler);
4307
4308static int ath10k_htt_rx_deliver_msdu(struct ath10k *ar, int quota, int budget)
4309{
4310 struct sk_buff *skb;
4311
4312 while (quota < budget) {
4313 if (skb_queue_empty(&ar->htt.rx_msdus_q))
4314 break;
4315
4316 skb = skb_dequeue(&ar->htt.rx_msdus_q);
4317 if (!skb)
4318 break;
4319 ath10k_process_rx(ar, skb);
4320 quota++;
4321 }
4322
4323 return quota;
4324}
4325
4326int ath10k_htt_rx_hl_indication(struct ath10k *ar, int budget)
4327{
4328 struct htt_resp *resp;
4329 struct ath10k_htt *htt = &ar->htt;
4330 struct sk_buff *skb;
4331 bool release;
4332 int quota;
4333
4334 for (quota = 0; quota < budget; quota++) {
4335 skb = skb_dequeue(&htt->rx_indication_head);
4336 if (!skb)
4337 break;
4338
4339 resp = (struct htt_resp *)skb->data;
4340
4341 release = ath10k_htt_rx_proc_rx_ind_hl(htt,
4342 &resp->rx_ind_hl,
4343 skb,
4344 HTT_RX_PN_CHECK,
4345 HTT_RX_NON_TKIP_MIC);
4346
4347 if (release)
4348 dev_kfree_skb_any(skb);
4349
4350 ath10k_dbg(ar, ATH10K_DBG_HTT, "rx indication poll pending count:%d\n",
4351 skb_queue_len(&htt->rx_indication_head));
4352 }
4353 return quota;
4354}
4355EXPORT_SYMBOL(ath10k_htt_rx_hl_indication);
4356
4357int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget)
4358{
4359 struct ath10k_htt *htt = &ar->htt;
4360 struct htt_tx_done tx_done = {};
4361 struct sk_buff_head tx_ind_q;
4362 struct sk_buff *skb;
4363 unsigned long flags;
4364 int quota = 0, done, ret;
4365 bool resched_napi = false;
4366
4367 __skb_queue_head_init(&tx_ind_q);
4368
4369 /* Process pending frames before dequeuing more data
4370 * from hardware.
4371 */
4372 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget);
4373 if (quota == budget) {
4374 resched_napi = true;
4375 goto exit;
4376 }
4377
4378 while ((skb = skb_dequeue(&htt->rx_in_ord_compl_q))) {
4379 spin_lock_bh(&htt->rx_ring.lock);
4380 ret = ath10k_htt_rx_in_ord_ind(ar, skb);
4381 spin_unlock_bh(&htt->rx_ring.lock);
4382
4383 dev_kfree_skb_any(skb);
4384 if (ret == -EIO) {
4385 resched_napi = true;
4386 goto exit;
4387 }
4388 }
4389
4390 while (atomic_read(&htt->num_mpdus_ready)) {
4391 ret = ath10k_htt_rx_handle_amsdu(htt);
4392 if (ret == -EIO) {
4393 resched_napi = true;
4394 goto exit;
4395 }
4396 atomic_dec(&htt->num_mpdus_ready);
4397 }
4398
4399 /* Deliver received data after processing data from hardware */
4400 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget);
4401
4402 /* From NAPI documentation:
4403 * The napi poll() function may also process TX completions, in which
4404 * case if it processes the entire TX ring then it should count that
4405 * work as the rest of the budget.
4406 */
4407 if ((quota < budget) && !kfifo_is_empty(&htt->txdone_fifo))
4408 quota = budget;
4409
4410 /* kfifo_get: called only within txrx_tasklet so it's neatly serialized.
4411 * From kfifo_get() documentation:
4412 * Note that with only one concurrent reader and one concurrent writer,
4413 * you don't need extra locking to use these macro.
4414 */
4415 while (kfifo_get(&htt->txdone_fifo, &tx_done))
4416 ath10k_txrx_tx_unref(htt, &tx_done);
4417
4418 ath10k_mac_tx_push_pending(ar);
4419
4420 spin_lock_irqsave(&htt->tx_fetch_ind_q.lock, flags);
4421 skb_queue_splice_init(&htt->tx_fetch_ind_q, &tx_ind_q);
4422 spin_unlock_irqrestore(&htt->tx_fetch_ind_q.lock, flags);
4423
4424 while ((skb = __skb_dequeue(&tx_ind_q))) {
4425 ath10k_htt_rx_tx_fetch_ind(ar, skb);
4426 dev_kfree_skb_any(skb);
4427 }
4428
4429exit:
4430 ath10k_htt_rx_msdu_buff_replenish(htt);
4431 /* In case of rx failure or more data to read, report budget
4432 * to reschedule NAPI poll
4433 */
4434 done = resched_napi ? budget : quota;
4435
4436 return done;
4437}
4438EXPORT_SYMBOL(ath10k_htt_txrx_compl_task);
4439
4440static const struct ath10k_htt_rx_ops htt_rx_ops_32 = {
4441 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_32,
4442 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_32,
4443 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_32,
4444 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_32,
4445 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_32,
4446};
4447
4448static const struct ath10k_htt_rx_ops htt_rx_ops_64 = {
4449 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_64,
4450 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_64,
4451 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_64,
4452 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_64,
4453 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_64,
4454};
4455
4456static const struct ath10k_htt_rx_ops htt_rx_ops_hl = {
4457 .htt_rx_proc_rx_frag_ind = ath10k_htt_rx_proc_rx_frag_ind_hl,
4458};
4459
4460void ath10k_htt_set_rx_ops(struct ath10k_htt *htt)
4461{
4462 struct ath10k *ar = htt->ar;
4463
4464 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
4465 htt->rx_ops = &htt_rx_ops_hl;
4466 else if (ar->hw_params.target_64bit)
4467 htt->rx_ops = &htt_rx_ops_64;
4468 else
4469 htt->rx_ops = &htt_rx_ops_32;
4470}