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 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
7 * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
8 */
9
10 #include <linux/export.h>
11
12 #include "core.h"
13 #include "htc.h"
14 #include "htt.h"
15 #include "txrx.h"
16 #include "debug.h"
17 #include "trace.h"
18 #include "mac.h"
19
20 #include <linux/log2.h>
21 #include <linux/bitfield.h>
22
23 /* when under memory pressure rx ring refill may fail and needs a retry */
24 #define HTT_RX_RING_REFILL_RETRY_MS 50
25
26 #define HTT_RX_RING_REFILL_RESCHED_MS 5
27
28 /* shortcut to interpret a raw memory buffer as a rx descriptor */
29 #define HTT_RX_BUF_TO_RX_DESC(hw, buf) ath10k_htt_rx_desc_from_raw_buffer(hw, buf)
30
31 static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb);
32
33 static struct sk_buff *
ath10k_htt_rx_find_skb_paddr(struct ath10k * ar,u64 paddr)34 ath10k_htt_rx_find_skb_paddr(struct ath10k *ar, u64 paddr)
35 {
36 struct ath10k_skb_rxcb *rxcb;
37
38 hash_for_each_possible(ar->htt.rx_ring.skb_table, rxcb, hlist, paddr)
39 if (rxcb->paddr == paddr)
40 return ATH10K_RXCB_SKB(rxcb);
41
42 WARN_ON_ONCE(1);
43 return NULL;
44 }
45
ath10k_htt_rx_ring_free(struct ath10k_htt * htt)46 static void ath10k_htt_rx_ring_free(struct ath10k_htt *htt)
47 {
48 struct sk_buff *skb;
49 struct ath10k_skb_rxcb *rxcb;
50 struct hlist_node *n;
51 int i;
52
53 if (htt->rx_ring.in_ord_rx) {
54 hash_for_each_safe(htt->rx_ring.skb_table, i, n, rxcb, hlist) {
55 skb = ATH10K_RXCB_SKB(rxcb);
56 dma_unmap_single(htt->ar->dev, rxcb->paddr,
57 skb->len + skb_tailroom(skb),
58 DMA_FROM_DEVICE);
59 hash_del(&rxcb->hlist);
60 dev_kfree_skb_any(skb);
61 }
62 } else {
63 for (i = 0; i < htt->rx_ring.size; i++) {
64 skb = htt->rx_ring.netbufs_ring[i];
65 if (!skb)
66 continue;
67
68 rxcb = ATH10K_SKB_RXCB(skb);
69 dma_unmap_single(htt->ar->dev, rxcb->paddr,
70 skb->len + skb_tailroom(skb),
71 DMA_FROM_DEVICE);
72 dev_kfree_skb_any(skb);
73 }
74 }
75
76 htt->rx_ring.fill_cnt = 0;
77 hash_init(htt->rx_ring.skb_table);
78 memset(htt->rx_ring.netbufs_ring, 0,
79 htt->rx_ring.size * sizeof(htt->rx_ring.netbufs_ring[0]));
80 }
81
ath10k_htt_get_rx_ring_size_32(struct ath10k_htt * htt)82 static size_t ath10k_htt_get_rx_ring_size_32(struct ath10k_htt *htt)
83 {
84 return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_32);
85 }
86
ath10k_htt_get_rx_ring_size_64(struct ath10k_htt * htt)87 static size_t ath10k_htt_get_rx_ring_size_64(struct ath10k_htt *htt)
88 {
89 return htt->rx_ring.size * sizeof(htt->rx_ring.paddrs_ring_64);
90 }
91
ath10k_htt_config_paddrs_ring_32(struct ath10k_htt * htt,void * vaddr)92 static void ath10k_htt_config_paddrs_ring_32(struct ath10k_htt *htt,
93 void *vaddr)
94 {
95 htt->rx_ring.paddrs_ring_32 = vaddr;
96 }
97
ath10k_htt_config_paddrs_ring_64(struct ath10k_htt * htt,void * vaddr)98 static void ath10k_htt_config_paddrs_ring_64(struct ath10k_htt *htt,
99 void *vaddr)
100 {
101 htt->rx_ring.paddrs_ring_64 = vaddr;
102 }
103
ath10k_htt_set_paddrs_ring_32(struct ath10k_htt * htt,dma_addr_t paddr,int idx)104 static void ath10k_htt_set_paddrs_ring_32(struct ath10k_htt *htt,
105 dma_addr_t paddr, int idx)
106 {
107 htt->rx_ring.paddrs_ring_32[idx] = __cpu_to_le32(paddr);
108 }
109
ath10k_htt_set_paddrs_ring_64(struct ath10k_htt * htt,dma_addr_t paddr,int idx)110 static void ath10k_htt_set_paddrs_ring_64(struct ath10k_htt *htt,
111 dma_addr_t paddr, int idx)
112 {
113 htt->rx_ring.paddrs_ring_64[idx] = __cpu_to_le64(paddr);
114 }
115
ath10k_htt_reset_paddrs_ring_32(struct ath10k_htt * htt,int idx)116 static void ath10k_htt_reset_paddrs_ring_32(struct ath10k_htt *htt, int idx)
117 {
118 htt->rx_ring.paddrs_ring_32[idx] = 0;
119 }
120
ath10k_htt_reset_paddrs_ring_64(struct ath10k_htt * htt,int idx)121 static void ath10k_htt_reset_paddrs_ring_64(struct ath10k_htt *htt, int idx)
122 {
123 htt->rx_ring.paddrs_ring_64[idx] = 0;
124 }
125
ath10k_htt_get_vaddr_ring_32(struct ath10k_htt * htt)126 static void *ath10k_htt_get_vaddr_ring_32(struct ath10k_htt *htt)
127 {
128 return (void *)htt->rx_ring.paddrs_ring_32;
129 }
130
ath10k_htt_get_vaddr_ring_64(struct ath10k_htt * htt)131 static void *ath10k_htt_get_vaddr_ring_64(struct ath10k_htt *htt)
132 {
133 return (void *)htt->rx_ring.paddrs_ring_64;
134 }
135
__ath10k_htt_rx_ring_fill_n(struct ath10k_htt * htt,int num)136 static int __ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num)
137 {
138 struct ath10k_hw_params *hw = &htt->ar->hw_params;
139 struct htt_rx_desc *rx_desc;
140 struct ath10k_skb_rxcb *rxcb;
141 struct sk_buff *skb;
142 dma_addr_t paddr;
143 int ret = 0, idx;
144
145 /* The Full Rx Reorder firmware has no way of telling the host
146 * implicitly when it copied HTT Rx Ring buffers to MAC Rx Ring.
147 * To keep things simple make sure ring is always half empty. This
148 * guarantees there'll be no replenishment overruns possible.
149 */
150 BUILD_BUG_ON(HTT_RX_RING_FILL_LEVEL >= HTT_RX_RING_SIZE / 2);
151
152 idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr);
153
154 if (idx < 0 || idx >= htt->rx_ring.size) {
155 ath10k_err(htt->ar, "rx ring index is not valid, firmware malfunctioning?\n");
156 idx &= htt->rx_ring.size_mask;
157 ret = -ENOMEM;
158 goto fail;
159 }
160
161 while (num > 0) {
162 skb = dev_alloc_skb(HTT_RX_BUF_SIZE + HTT_RX_DESC_ALIGN);
163 if (!skb) {
164 ret = -ENOMEM;
165 goto fail;
166 }
167
168 if (!IS_ALIGNED((unsigned long)skb->data, HTT_RX_DESC_ALIGN))
169 skb_pull(skb,
170 PTR_ALIGN(skb->data, HTT_RX_DESC_ALIGN) -
171 skb->data);
172
173 /* Clear rx_desc attention word before posting to Rx ring */
174 rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, skb->data);
175 ath10k_htt_rx_desc_get_attention(hw, rx_desc)->flags = __cpu_to_le32(0);
176
177 paddr = dma_map_single(htt->ar->dev, skb->data,
178 skb->len + skb_tailroom(skb),
179 DMA_FROM_DEVICE);
180
181 if (unlikely(dma_mapping_error(htt->ar->dev, paddr))) {
182 dev_kfree_skb_any(skb);
183 ret = -ENOMEM;
184 goto fail;
185 }
186
187 rxcb = ATH10K_SKB_RXCB(skb);
188 rxcb->paddr = paddr;
189 htt->rx_ring.netbufs_ring[idx] = skb;
190 ath10k_htt_set_paddrs_ring(htt, paddr, idx);
191 htt->rx_ring.fill_cnt++;
192
193 if (htt->rx_ring.in_ord_rx) {
194 hash_add(htt->rx_ring.skb_table,
195 &ATH10K_SKB_RXCB(skb)->hlist,
196 paddr);
197 }
198
199 num--;
200 idx++;
201 idx &= htt->rx_ring.size_mask;
202 }
203
204 fail:
205 /*
206 * Make sure the rx buffer is updated before available buffer
207 * index to avoid any potential rx ring corruption.
208 */
209 mb();
210 *htt->rx_ring.alloc_idx.vaddr = __cpu_to_le32(idx);
211 return ret;
212 }
213
ath10k_htt_rx_ring_fill_n(struct ath10k_htt * htt,int num)214 static int ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num)
215 {
216 lockdep_assert_held(&htt->rx_ring.lock);
217 return __ath10k_htt_rx_ring_fill_n(htt, num);
218 }
219
ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt * htt)220 static void ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt *htt)
221 {
222 int ret, num_deficit, num_to_fill;
223
224 /* Refilling the whole RX ring buffer proves to be a bad idea. The
225 * reason is RX may take up significant amount of CPU cycles and starve
226 * other tasks, e.g. TX on an ethernet device while acting as a bridge
227 * with ath10k wlan interface. This ended up with very poor performance
228 * once CPU the host system was overwhelmed with RX on ath10k.
229 *
230 * By limiting the number of refills the replenishing occurs
231 * progressively. This in turns makes use of the fact tasklets are
232 * processed in FIFO order. This means actual RX processing can starve
233 * out refilling. If there's not enough buffers on RX ring FW will not
234 * report RX until it is refilled with enough buffers. This
235 * automatically balances load wrt to CPU power.
236 *
237 * This probably comes at a cost of lower maximum throughput but
238 * improves the average and stability.
239 */
240 spin_lock_bh(&htt->rx_ring.lock);
241 num_deficit = htt->rx_ring.fill_level - htt->rx_ring.fill_cnt;
242 num_to_fill = min(ATH10K_HTT_MAX_NUM_REFILL, num_deficit);
243 num_deficit -= num_to_fill;
244 ret = ath10k_htt_rx_ring_fill_n(htt, num_to_fill);
245 if (ret == -ENOMEM) {
246 /*
247 * Failed to fill it to the desired level -
248 * we'll start a timer and try again next time.
249 * As long as enough buffers are left in the ring for
250 * another A-MPDU rx, no special recovery is needed.
251 */
252 mod_timer(&htt->rx_ring.refill_retry_timer, jiffies +
253 msecs_to_jiffies(HTT_RX_RING_REFILL_RETRY_MS));
254 } else if (num_deficit > 0) {
255 mod_timer(&htt->rx_ring.refill_retry_timer, jiffies +
256 msecs_to_jiffies(HTT_RX_RING_REFILL_RESCHED_MS));
257 }
258 spin_unlock_bh(&htt->rx_ring.lock);
259 }
260
ath10k_htt_rx_ring_refill_retry(struct timer_list * t)261 static void ath10k_htt_rx_ring_refill_retry(struct timer_list *t)
262 {
263 struct ath10k_htt *htt = timer_container_of(htt, t,
264 rx_ring.refill_retry_timer);
265
266 ath10k_htt_rx_msdu_buff_replenish(htt);
267 }
268
ath10k_htt_rx_ring_refill(struct ath10k * ar)269 int ath10k_htt_rx_ring_refill(struct ath10k *ar)
270 {
271 struct ath10k_htt *htt = &ar->htt;
272 int ret;
273
274 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
275 return 0;
276
277 spin_lock_bh(&htt->rx_ring.lock);
278 ret = ath10k_htt_rx_ring_fill_n(htt, (htt->rx_ring.fill_level -
279 htt->rx_ring.fill_cnt));
280
281 if (ret)
282 ath10k_htt_rx_ring_free(htt);
283
284 spin_unlock_bh(&htt->rx_ring.lock);
285
286 return ret;
287 }
288
ath10k_htt_rx_free(struct ath10k_htt * htt)289 void ath10k_htt_rx_free(struct ath10k_htt *htt)
290 {
291 if (htt->ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
292 return;
293
294 timer_delete_sync(&htt->rx_ring.refill_retry_timer);
295
296 skb_queue_purge(&htt->rx_msdus_q);
297 skb_queue_purge(&htt->rx_in_ord_compl_q);
298 skb_queue_purge(&htt->tx_fetch_ind_q);
299
300 spin_lock_bh(&htt->rx_ring.lock);
301 ath10k_htt_rx_ring_free(htt);
302 spin_unlock_bh(&htt->rx_ring.lock);
303
304 dma_free_coherent(htt->ar->dev,
305 ath10k_htt_get_rx_ring_size(htt),
306 ath10k_htt_get_vaddr_ring(htt),
307 htt->rx_ring.base_paddr);
308
309 ath10k_htt_config_paddrs_ring(htt, NULL);
310
311 dma_free_coherent(htt->ar->dev,
312 sizeof(*htt->rx_ring.alloc_idx.vaddr),
313 htt->rx_ring.alloc_idx.vaddr,
314 htt->rx_ring.alloc_idx.paddr);
315 htt->rx_ring.alloc_idx.vaddr = NULL;
316
317 kfree(htt->rx_ring.netbufs_ring);
318 htt->rx_ring.netbufs_ring = NULL;
319 }
320
ath10k_htt_rx_netbuf_pop(struct ath10k_htt * htt)321 static inline struct sk_buff *ath10k_htt_rx_netbuf_pop(struct ath10k_htt *htt)
322 {
323 struct ath10k *ar = htt->ar;
324 int idx;
325 struct sk_buff *msdu;
326
327 lockdep_assert_held(&htt->rx_ring.lock);
328
329 if (htt->rx_ring.fill_cnt == 0) {
330 ath10k_warn(ar, "tried to pop sk_buff from an empty rx ring\n");
331 return NULL;
332 }
333
334 idx = htt->rx_ring.sw_rd_idx.msdu_payld;
335 msdu = htt->rx_ring.netbufs_ring[idx];
336 htt->rx_ring.netbufs_ring[idx] = NULL;
337 ath10k_htt_reset_paddrs_ring(htt, idx);
338
339 idx++;
340 idx &= htt->rx_ring.size_mask;
341 htt->rx_ring.sw_rd_idx.msdu_payld = idx;
342 htt->rx_ring.fill_cnt--;
343
344 dma_unmap_single(htt->ar->dev,
345 ATH10K_SKB_RXCB(msdu)->paddr,
346 msdu->len + skb_tailroom(msdu),
347 DMA_FROM_DEVICE);
348 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ",
349 msdu->data, msdu->len + skb_tailroom(msdu));
350
351 return msdu;
352 }
353
354 /* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */
ath10k_htt_rx_amsdu_pop(struct ath10k_htt * htt,struct sk_buff_head * amsdu)355 static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt *htt,
356 struct sk_buff_head *amsdu)
357 {
358 struct ath10k *ar = htt->ar;
359 struct ath10k_hw_params *hw = &ar->hw_params;
360 int msdu_len, msdu_chaining = 0;
361 struct sk_buff *msdu;
362 struct htt_rx_desc *rx_desc;
363 struct rx_attention *rx_desc_attention;
364 struct rx_frag_info_common *rx_desc_frag_info_common;
365 struct rx_msdu_start_common *rx_desc_msdu_start_common;
366 struct rx_msdu_end_common *rx_desc_msdu_end_common;
367
368 lockdep_assert_held(&htt->rx_ring.lock);
369
370 for (;;) {
371 int last_msdu, msdu_len_invalid, msdu_chained;
372
373 msdu = ath10k_htt_rx_netbuf_pop(htt);
374 if (!msdu) {
375 __skb_queue_purge(amsdu);
376 return -ENOENT;
377 }
378
379 __skb_queue_tail(amsdu, msdu);
380
381 rx_desc = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
382 rx_desc_attention = ath10k_htt_rx_desc_get_attention(hw, rx_desc);
383 rx_desc_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw,
384 rx_desc);
385 rx_desc_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rx_desc);
386 rx_desc_frag_info_common = ath10k_htt_rx_desc_get_frag_info(hw, rx_desc);
387
388 /* FIXME: we must report msdu payload since this is what caller
389 * expects now
390 */
391 skb_put(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset);
392 skb_pull(msdu, hw->rx_desc_ops->rx_desc_msdu_payload_offset);
393
394 /*
395 * Sanity check - confirm the HW is finished filling in the
396 * rx data.
397 * If the HW and SW are working correctly, then it's guaranteed
398 * that the HW's MAC DMA is done before this point in the SW.
399 * To prevent the case that we handle a stale Rx descriptor,
400 * just assert for now until we have a way to recover.
401 */
402 if (!(__le32_to_cpu(rx_desc_attention->flags)
403 & RX_ATTENTION_FLAGS_MSDU_DONE)) {
404 __skb_queue_purge(amsdu);
405 return -EIO;
406 }
407
408 msdu_len_invalid = !!(__le32_to_cpu(rx_desc_attention->flags)
409 & (RX_ATTENTION_FLAGS_MPDU_LENGTH_ERR |
410 RX_ATTENTION_FLAGS_MSDU_LENGTH_ERR));
411 msdu_len = MS(__le32_to_cpu(rx_desc_msdu_start_common->info0),
412 RX_MSDU_START_INFO0_MSDU_LENGTH);
413 msdu_chained = rx_desc_frag_info_common->ring2_more_count;
414
415 if (msdu_len_invalid)
416 msdu_len = 0;
417
418 skb_trim(msdu, 0);
419 skb_put(msdu, min(msdu_len, ath10k_htt_rx_msdu_size(hw)));
420 msdu_len -= msdu->len;
421
422 /* Note: Chained buffers do not contain rx descriptor */
423 while (msdu_chained--) {
424 msdu = ath10k_htt_rx_netbuf_pop(htt);
425 if (!msdu) {
426 __skb_queue_purge(amsdu);
427 return -ENOENT;
428 }
429
430 __skb_queue_tail(amsdu, msdu);
431 skb_trim(msdu, 0);
432 skb_put(msdu, min(msdu_len, HTT_RX_BUF_SIZE));
433 msdu_len -= msdu->len;
434 msdu_chaining = 1;
435 }
436
437 last_msdu = __le32_to_cpu(rx_desc_msdu_end_common->info0) &
438 RX_MSDU_END_INFO0_LAST_MSDU;
439
440 /* FIXME: why are we skipping the first part of the rx_desc? */
441 #if defined(__linux__)
442 trace_ath10k_htt_rx_desc(ar, (void *)rx_desc + sizeof(u32),
443 #elif defined(__FreeBSD__)
444 trace_ath10k_htt_rx_desc(ar, (u8 *)rx_desc + sizeof(u32),
445 #endif
446 hw->rx_desc_ops->rx_desc_size - sizeof(u32));
447
448 if (last_msdu)
449 break;
450 }
451
452 if (skb_queue_empty(amsdu))
453 msdu_chaining = -1;
454
455 /*
456 * Don't refill the ring yet.
457 *
458 * First, the elements popped here are still in use - it is not
459 * safe to overwrite them until the matching call to
460 * mpdu_desc_list_next. Second, for efficiency it is preferable to
461 * refill the rx ring with 1 PPDU's worth of rx buffers (something
462 * like 32 x 3 buffers), rather than one MPDU's worth of rx buffers
463 * (something like 3 buffers). Consequently, we'll rely on the txrx
464 * SW to tell us when it is done pulling all the PPDU's rx buffers
465 * out of the rx ring, and then refill it just once.
466 */
467
468 return msdu_chaining;
469 }
470
ath10k_htt_rx_pop_paddr(struct ath10k_htt * htt,u64 paddr)471 static struct sk_buff *ath10k_htt_rx_pop_paddr(struct ath10k_htt *htt,
472 u64 paddr)
473 {
474 struct ath10k *ar = htt->ar;
475 struct ath10k_skb_rxcb *rxcb;
476 struct sk_buff *msdu;
477
478 lockdep_assert_held(&htt->rx_ring.lock);
479
480 msdu = ath10k_htt_rx_find_skb_paddr(ar, paddr);
481 if (!msdu)
482 return NULL;
483
484 rxcb = ATH10K_SKB_RXCB(msdu);
485 hash_del(&rxcb->hlist);
486 htt->rx_ring.fill_cnt--;
487
488 dma_unmap_single(htt->ar->dev, rxcb->paddr,
489 msdu->len + skb_tailroom(msdu),
490 DMA_FROM_DEVICE);
491 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx netbuf pop: ",
492 msdu->data, msdu->len + skb_tailroom(msdu));
493
494 return msdu;
495 }
496
ath10k_htt_append_frag_list(struct sk_buff * skb_head,struct sk_buff * frag_list,unsigned int frag_len)497 static inline void ath10k_htt_append_frag_list(struct sk_buff *skb_head,
498 struct sk_buff *frag_list,
499 unsigned int frag_len)
500 {
501 skb_shinfo(skb_head)->frag_list = frag_list;
502 skb_head->data_len = frag_len;
503 skb_head->len += skb_head->data_len;
504 }
505
ath10k_htt_rx_handle_amsdu_mon_32(struct ath10k_htt * htt,struct sk_buff * msdu,struct htt_rx_in_ord_msdu_desc ** msdu_desc)506 static int ath10k_htt_rx_handle_amsdu_mon_32(struct ath10k_htt *htt,
507 struct sk_buff *msdu,
508 struct htt_rx_in_ord_msdu_desc **msdu_desc)
509 {
510 struct ath10k *ar = htt->ar;
511 struct ath10k_hw_params *hw = &ar->hw_params;
512 u32 paddr;
513 struct sk_buff *frag_buf;
514 struct sk_buff *prev_frag_buf;
515 u8 last_frag;
516 struct htt_rx_in_ord_msdu_desc *ind_desc = *msdu_desc;
517 struct htt_rx_desc *rxd;
518 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len);
519
520 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
521 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
522
523 skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
524 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
525 skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw)));
526 amsdu_len -= msdu->len;
527
528 last_frag = ind_desc->reserved;
529 if (last_frag) {
530 if (amsdu_len) {
531 ath10k_warn(ar, "invalid amsdu len %u, left %d",
532 __le16_to_cpu(ind_desc->msdu_len),
533 amsdu_len);
534 }
535 return 0;
536 }
537
538 ind_desc++;
539 paddr = __le32_to_cpu(ind_desc->msdu_paddr);
540 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
541 if (!frag_buf) {
542 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%x", paddr);
543 return -ENOENT;
544 }
545
546 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
547 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len);
548
549 amsdu_len -= frag_buf->len;
550 prev_frag_buf = frag_buf;
551 last_frag = ind_desc->reserved;
552 while (!last_frag) {
553 ind_desc++;
554 paddr = __le32_to_cpu(ind_desc->msdu_paddr);
555 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
556 if (!frag_buf) {
557 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%x",
558 paddr);
559 prev_frag_buf->next = NULL;
560 return -ENOENT;
561 }
562
563 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
564 last_frag = ind_desc->reserved;
565 amsdu_len -= frag_buf->len;
566
567 prev_frag_buf->next = frag_buf;
568 prev_frag_buf = frag_buf;
569 }
570
571 if (amsdu_len) {
572 ath10k_warn(ar, "invalid amsdu len %u, left %d",
573 __le16_to_cpu(ind_desc->msdu_len), amsdu_len);
574 }
575
576 *msdu_desc = ind_desc;
577
578 prev_frag_buf->next = NULL;
579 return 0;
580 }
581
582 static int
ath10k_htt_rx_handle_amsdu_mon_64(struct ath10k_htt * htt,struct sk_buff * msdu,struct htt_rx_in_ord_msdu_desc_ext ** msdu_desc)583 ath10k_htt_rx_handle_amsdu_mon_64(struct ath10k_htt *htt,
584 struct sk_buff *msdu,
585 struct htt_rx_in_ord_msdu_desc_ext **msdu_desc)
586 {
587 struct ath10k *ar = htt->ar;
588 struct ath10k_hw_params *hw = &ar->hw_params;
589 u64 paddr;
590 struct sk_buff *frag_buf;
591 struct sk_buff *prev_frag_buf;
592 u8 last_frag;
593 struct htt_rx_in_ord_msdu_desc_ext *ind_desc = *msdu_desc;
594 struct htt_rx_desc *rxd;
595 int amsdu_len = __le16_to_cpu(ind_desc->msdu_len);
596
597 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
598 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
599
600 skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
601 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
602 skb_put(msdu, min(amsdu_len, ath10k_htt_rx_msdu_size(hw)));
603 amsdu_len -= msdu->len;
604
605 last_frag = ind_desc->reserved;
606 if (last_frag) {
607 if (amsdu_len) {
608 ath10k_warn(ar, "invalid amsdu len %u, left %d",
609 __le16_to_cpu(ind_desc->msdu_len),
610 amsdu_len);
611 }
612 return 0;
613 }
614
615 ind_desc++;
616 paddr = __le64_to_cpu(ind_desc->msdu_paddr);
617 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
618 if (!frag_buf) {
619 #if defined(__linux__)
620 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%llx", paddr);
621 #elif defined(__FreeBSD__)
622 ath10k_warn(ar, "failed to pop frag-1 paddr: 0x%jx", (uintmax_t)paddr);
623 #endif
624 return -ENOENT;
625 }
626
627 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
628 ath10k_htt_append_frag_list(msdu, frag_buf, amsdu_len);
629
630 amsdu_len -= frag_buf->len;
631 prev_frag_buf = frag_buf;
632 last_frag = ind_desc->reserved;
633 while (!last_frag) {
634 ind_desc++;
635 paddr = __le64_to_cpu(ind_desc->msdu_paddr);
636 frag_buf = ath10k_htt_rx_pop_paddr(htt, paddr);
637 if (!frag_buf) {
638 #if defined(__linux__)
639 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%llx",
640 paddr);
641 #elif defined(__FreeBSD__)
642 ath10k_warn(ar, "failed to pop frag-n paddr: 0x%jx",
643 (uintmax_t)paddr);
644 #endif
645 prev_frag_buf->next = NULL;
646 return -ENOENT;
647 }
648
649 skb_put(frag_buf, min(amsdu_len, HTT_RX_BUF_SIZE));
650 last_frag = ind_desc->reserved;
651 amsdu_len -= frag_buf->len;
652
653 prev_frag_buf->next = frag_buf;
654 prev_frag_buf = frag_buf;
655 }
656
657 if (amsdu_len) {
658 ath10k_warn(ar, "invalid amsdu len %u, left %d",
659 __le16_to_cpu(ind_desc->msdu_len), amsdu_len);
660 }
661
662 *msdu_desc = ind_desc;
663
664 prev_frag_buf->next = NULL;
665 return 0;
666 }
667
ath10k_htt_rx_pop_paddr32_list(struct ath10k_htt * htt,struct htt_rx_in_ord_ind * ev,struct sk_buff_head * list)668 static int ath10k_htt_rx_pop_paddr32_list(struct ath10k_htt *htt,
669 struct htt_rx_in_ord_ind *ev,
670 struct sk_buff_head *list)
671 {
672 struct ath10k *ar = htt->ar;
673 struct ath10k_hw_params *hw = &ar->hw_params;
674 struct htt_rx_in_ord_msdu_desc *msdu_desc = ev->msdu_descs32;
675 struct htt_rx_desc *rxd;
676 struct rx_attention *rxd_attention;
677 struct sk_buff *msdu;
678 int msdu_count, ret;
679 bool is_offload;
680 u32 paddr;
681
682 lockdep_assert_held(&htt->rx_ring.lock);
683
684 msdu_count = __le16_to_cpu(ev->msdu_count);
685 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
686
687 while (msdu_count--) {
688 paddr = __le32_to_cpu(msdu_desc->msdu_paddr);
689
690 msdu = ath10k_htt_rx_pop_paddr(htt, paddr);
691 if (!msdu) {
692 __skb_queue_purge(list);
693 return -ENOENT;
694 }
695
696 if (!is_offload && ar->monitor_arvif) {
697 ret = ath10k_htt_rx_handle_amsdu_mon_32(htt, msdu,
698 &msdu_desc);
699 if (ret) {
700 __skb_queue_purge(list);
701 return ret;
702 }
703 __skb_queue_tail(list, msdu);
704 msdu_desc++;
705 continue;
706 }
707
708 __skb_queue_tail(list, msdu);
709
710 if (!is_offload) {
711 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
712 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
713
714 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
715
716 skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
717 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
718 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len));
719
720 if (!(__le32_to_cpu(rxd_attention->flags) &
721 RX_ATTENTION_FLAGS_MSDU_DONE)) {
722 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n");
723 return -EIO;
724 }
725 }
726
727 msdu_desc++;
728 }
729
730 return 0;
731 }
732
ath10k_htt_rx_pop_paddr64_list(struct ath10k_htt * htt,struct htt_rx_in_ord_ind * ev,struct sk_buff_head * list)733 static int ath10k_htt_rx_pop_paddr64_list(struct ath10k_htt *htt,
734 struct htt_rx_in_ord_ind *ev,
735 struct sk_buff_head *list)
736 {
737 struct ath10k *ar = htt->ar;
738 struct ath10k_hw_params *hw = &ar->hw_params;
739 struct htt_rx_in_ord_msdu_desc_ext *msdu_desc = ev->msdu_descs64;
740 struct htt_rx_desc *rxd;
741 struct rx_attention *rxd_attention;
742 struct sk_buff *msdu;
743 int msdu_count, ret;
744 bool is_offload;
745 u64 paddr;
746
747 lockdep_assert_held(&htt->rx_ring.lock);
748
749 msdu_count = __le16_to_cpu(ev->msdu_count);
750 is_offload = !!(ev->info & HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
751
752 while (msdu_count--) {
753 paddr = __le64_to_cpu(msdu_desc->msdu_paddr);
754 msdu = ath10k_htt_rx_pop_paddr(htt, paddr);
755 if (!msdu) {
756 __skb_queue_purge(list);
757 return -ENOENT;
758 }
759
760 if (!is_offload && ar->monitor_arvif) {
761 ret = ath10k_htt_rx_handle_amsdu_mon_64(htt, msdu,
762 &msdu_desc);
763 if (ret) {
764 __skb_queue_purge(list);
765 return ret;
766 }
767 __skb_queue_tail(list, msdu);
768 msdu_desc++;
769 continue;
770 }
771
772 __skb_queue_tail(list, msdu);
773
774 if (!is_offload) {
775 rxd = HTT_RX_BUF_TO_RX_DESC(hw, msdu->data);
776 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
777
778 trace_ath10k_htt_rx_desc(ar, rxd, hw->rx_desc_ops->rx_desc_size);
779
780 skb_put(msdu, hw->rx_desc_ops->rx_desc_size);
781 skb_pull(msdu, hw->rx_desc_ops->rx_desc_size);
782 skb_put(msdu, __le16_to_cpu(msdu_desc->msdu_len));
783
784 if (!(__le32_to_cpu(rxd_attention->flags) &
785 RX_ATTENTION_FLAGS_MSDU_DONE)) {
786 ath10k_warn(htt->ar, "tried to pop an incomplete frame, oops!\n");
787 return -EIO;
788 }
789 }
790
791 msdu_desc++;
792 }
793
794 return 0;
795 }
796
ath10k_htt_rx_alloc(struct ath10k_htt * htt)797 int ath10k_htt_rx_alloc(struct ath10k_htt *htt)
798 {
799 struct ath10k *ar = htt->ar;
800 dma_addr_t paddr;
801 void *vaddr, *vaddr_ring;
802 size_t size;
803 struct timer_list *timer = &htt->rx_ring.refill_retry_timer;
804
805 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
806 return 0;
807
808 htt->rx_confused = false;
809
810 /* XXX: The fill level could be changed during runtime in response to
811 * the host processing latency. Is this really worth it?
812 */
813 htt->rx_ring.size = HTT_RX_RING_SIZE;
814 htt->rx_ring.size_mask = htt->rx_ring.size - 1;
815 htt->rx_ring.fill_level = ar->hw_params.rx_ring_fill_level;
816
817 if (!is_power_of_2(htt->rx_ring.size)) {
818 ath10k_warn(ar, "htt rx ring size is not power of 2\n");
819 return -EINVAL;
820 }
821
822 htt->rx_ring.netbufs_ring =
823 kcalloc(htt->rx_ring.size, sizeof(struct sk_buff *),
824 GFP_KERNEL);
825 if (!htt->rx_ring.netbufs_ring)
826 goto err_netbuf;
827
828 size = ath10k_htt_get_rx_ring_size(htt);
829
830 vaddr_ring = dma_alloc_coherent(htt->ar->dev, size, &paddr, GFP_KERNEL);
831 if (!vaddr_ring)
832 goto err_dma_ring;
833
834 ath10k_htt_config_paddrs_ring(htt, vaddr_ring);
835 htt->rx_ring.base_paddr = paddr;
836
837 vaddr = dma_alloc_coherent(htt->ar->dev,
838 sizeof(*htt->rx_ring.alloc_idx.vaddr),
839 &paddr, GFP_KERNEL);
840 if (!vaddr)
841 goto err_dma_idx;
842
843 htt->rx_ring.alloc_idx.vaddr = vaddr;
844 htt->rx_ring.alloc_idx.paddr = paddr;
845 htt->rx_ring.sw_rd_idx.msdu_payld = htt->rx_ring.size_mask;
846 *htt->rx_ring.alloc_idx.vaddr = 0;
847
848 /* Initialize the Rx refill retry timer */
849 timer_setup(timer, ath10k_htt_rx_ring_refill_retry, 0);
850
851 spin_lock_init(&htt->rx_ring.lock);
852 #if defined(__FreeBSD__)
853 spin_lock_init(&htt->tx_fetch_ind_q.lock);
854 #endif
855
856 htt->rx_ring.fill_cnt = 0;
857 htt->rx_ring.sw_rd_idx.msdu_payld = 0;
858 hash_init(htt->rx_ring.skb_table);
859
860 skb_queue_head_init(&htt->rx_msdus_q);
861 skb_queue_head_init(&htt->rx_in_ord_compl_q);
862 skb_queue_head_init(&htt->tx_fetch_ind_q);
863 atomic_set(&htt->num_mpdus_ready, 0);
864
865 ath10k_dbg(ar, ATH10K_DBG_BOOT, "htt rx ring size %d fill_level %d\n",
866 htt->rx_ring.size, htt->rx_ring.fill_level);
867 return 0;
868
869 err_dma_idx:
870 dma_free_coherent(htt->ar->dev,
871 ath10k_htt_get_rx_ring_size(htt),
872 vaddr_ring,
873 htt->rx_ring.base_paddr);
874 ath10k_htt_config_paddrs_ring(htt, NULL);
875 err_dma_ring:
876 kfree(htt->rx_ring.netbufs_ring);
877 htt->rx_ring.netbufs_ring = NULL;
878 err_netbuf:
879 return -ENOMEM;
880 }
881
ath10k_htt_rx_crypto_param_len(struct ath10k * ar,enum htt_rx_mpdu_encrypt_type type)882 static int ath10k_htt_rx_crypto_param_len(struct ath10k *ar,
883 enum htt_rx_mpdu_encrypt_type type)
884 {
885 switch (type) {
886 case HTT_RX_MPDU_ENCRYPT_NONE:
887 return 0;
888 case HTT_RX_MPDU_ENCRYPT_WEP40:
889 case HTT_RX_MPDU_ENCRYPT_WEP104:
890 return IEEE80211_WEP_IV_LEN;
891 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
892 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
893 return IEEE80211_TKIP_IV_LEN;
894 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
895 return IEEE80211_CCMP_HDR_LEN;
896 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
897 return IEEE80211_CCMP_256_HDR_LEN;
898 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
899 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
900 return IEEE80211_GCMP_HDR_LEN;
901 case HTT_RX_MPDU_ENCRYPT_WEP128:
902 case HTT_RX_MPDU_ENCRYPT_WAPI:
903 break;
904 }
905
906 ath10k_warn(ar, "unsupported encryption type %d\n", type);
907 return 0;
908 }
909
910 #define MICHAEL_MIC_LEN 8
911
ath10k_htt_rx_crypto_mic_len(struct ath10k * ar,enum htt_rx_mpdu_encrypt_type type)912 static int ath10k_htt_rx_crypto_mic_len(struct ath10k *ar,
913 enum htt_rx_mpdu_encrypt_type type)
914 {
915 switch (type) {
916 case HTT_RX_MPDU_ENCRYPT_NONE:
917 case HTT_RX_MPDU_ENCRYPT_WEP40:
918 case HTT_RX_MPDU_ENCRYPT_WEP104:
919 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
920 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
921 return 0;
922 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
923 return IEEE80211_CCMP_MIC_LEN;
924 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
925 return IEEE80211_CCMP_256_MIC_LEN;
926 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
927 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
928 return IEEE80211_GCMP_MIC_LEN;
929 case HTT_RX_MPDU_ENCRYPT_WEP128:
930 case HTT_RX_MPDU_ENCRYPT_WAPI:
931 break;
932 }
933
934 ath10k_warn(ar, "unsupported encryption type %d\n", type);
935 return 0;
936 }
937
ath10k_htt_rx_crypto_icv_len(struct ath10k * ar,enum htt_rx_mpdu_encrypt_type type)938 static int ath10k_htt_rx_crypto_icv_len(struct ath10k *ar,
939 enum htt_rx_mpdu_encrypt_type type)
940 {
941 switch (type) {
942 case HTT_RX_MPDU_ENCRYPT_NONE:
943 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2:
944 case HTT_RX_MPDU_ENCRYPT_AES_CCM256_WPA2:
945 case HTT_RX_MPDU_ENCRYPT_AES_GCMP_WPA2:
946 case HTT_RX_MPDU_ENCRYPT_AES_GCMP256_WPA2:
947 return 0;
948 case HTT_RX_MPDU_ENCRYPT_WEP40:
949 case HTT_RX_MPDU_ENCRYPT_WEP104:
950 return IEEE80211_WEP_ICV_LEN;
951 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC:
952 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA:
953 return IEEE80211_TKIP_ICV_LEN;
954 case HTT_RX_MPDU_ENCRYPT_WEP128:
955 case HTT_RX_MPDU_ENCRYPT_WAPI:
956 break;
957 }
958
959 ath10k_warn(ar, "unsupported encryption type %d\n", type);
960 return 0;
961 }
962
963 struct amsdu_subframe_hdr {
964 u8 dst[ETH_ALEN];
965 u8 src[ETH_ALEN];
966 __be16 len;
967 } __packed;
968
969 #define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63)
970
ath10k_bw_to_mac80211_bw(u8 bw)971 static inline u8 ath10k_bw_to_mac80211_bw(u8 bw)
972 {
973 u8 ret = 0;
974
975 switch (bw) {
976 case 0:
977 ret = RATE_INFO_BW_20;
978 break;
979 case 1:
980 ret = RATE_INFO_BW_40;
981 break;
982 case 2:
983 ret = RATE_INFO_BW_80;
984 break;
985 case 3:
986 ret = RATE_INFO_BW_160;
987 break;
988 }
989
990 return ret;
991 }
992
ath10k_htt_rx_h_rates(struct ath10k * ar,struct ieee80211_rx_status * status,struct htt_rx_desc * rxd)993 static void ath10k_htt_rx_h_rates(struct ath10k *ar,
994 struct ieee80211_rx_status *status,
995 struct htt_rx_desc *rxd)
996 {
997 struct ath10k_hw_params *hw = &ar->hw_params;
998 struct rx_attention *rxd_attention;
999 struct rx_mpdu_start *rxd_mpdu_start;
1000 struct rx_mpdu_end *rxd_mpdu_end;
1001 struct rx_msdu_start_common *rxd_msdu_start_common;
1002 struct rx_msdu_end_common *rxd_msdu_end_common;
1003 struct rx_ppdu_start *rxd_ppdu_start;
1004 struct ieee80211_supported_band *sband;
1005 u8 cck, rate, bw, sgi, mcs, nss;
1006 u8 *rxd_msdu_payload;
1007 u8 preamble = 0;
1008 u8 group_id;
1009 u32 info1, info2, info3;
1010 u32 stbc, nsts_su;
1011
1012 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
1013 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
1014 rxd_mpdu_end = ath10k_htt_rx_desc_get_mpdu_end(hw, rxd);
1015 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
1016 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
1017 rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd);
1018 rxd_msdu_payload = ath10k_htt_rx_desc_get_msdu_payload(hw, rxd);
1019
1020 info1 = __le32_to_cpu(rxd_ppdu_start->info1);
1021 info2 = __le32_to_cpu(rxd_ppdu_start->info2);
1022 info3 = __le32_to_cpu(rxd_ppdu_start->info3);
1023
1024 preamble = MS(info1, RX_PPDU_START_INFO1_PREAMBLE_TYPE);
1025
1026 switch (preamble) {
1027 case HTT_RX_LEGACY:
1028 /* To get legacy rate index band is required. Since band can't
1029 * be undefined check if freq is non-zero.
1030 */
1031 if (!status->freq)
1032 return;
1033
1034 cck = info1 & RX_PPDU_START_INFO1_L_SIG_RATE_SELECT;
1035 rate = MS(info1, RX_PPDU_START_INFO1_L_SIG_RATE);
1036 rate &= ~RX_PPDU_START_RATE_FLAG;
1037
1038 sband = &ar->mac.sbands[status->band];
1039 status->rate_idx = ath10k_mac_hw_rate_to_idx(sband, rate, cck);
1040 break;
1041 case HTT_RX_HT:
1042 case HTT_RX_HT_WITH_TXBF:
1043 /* HT-SIG - Table 20-11 in info2 and info3 */
1044 mcs = info2 & 0x1F;
1045 nss = mcs >> 3;
1046 bw = (info2 >> 7) & 1;
1047 sgi = (info3 >> 7) & 1;
1048
1049 status->rate_idx = mcs;
1050 status->encoding = RX_ENC_HT;
1051 if (sgi)
1052 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1053 if (bw)
1054 status->bw = RATE_INFO_BW_40;
1055 break;
1056 case HTT_RX_VHT:
1057 case HTT_RX_VHT_WITH_TXBF:
1058 /* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3
1059 * TODO check this
1060 */
1061 bw = info2 & 3;
1062 sgi = info3 & 1;
1063 stbc = (info2 >> 3) & 1;
1064 group_id = (info2 >> 4) & 0x3F;
1065
1066 if (GROUP_ID_IS_SU_MIMO(group_id)) {
1067 mcs = (info3 >> 4) & 0x0F;
1068 nsts_su = ((info2 >> 10) & 0x07);
1069 if (stbc)
1070 nss = (nsts_su >> 2) + 1;
1071 else
1072 nss = (nsts_su + 1);
1073 } else {
1074 /* Hardware doesn't decode VHT-SIG-B into Rx descriptor
1075 * so it's impossible to decode MCS. Also since
1076 * firmware consumes Group Id Management frames host
1077 * has no knowledge regarding group/user position
1078 * mapping so it's impossible to pick the correct Nsts
1079 * from VHT-SIG-A1.
1080 *
1081 * Bandwidth and SGI are valid so report the rateinfo
1082 * on best-effort basis.
1083 */
1084 mcs = 0;
1085 nss = 1;
1086 }
1087
1088 if (mcs > 0x09) {
1089 ath10k_warn(ar, "invalid MCS received %u\n", mcs);
1090 ath10k_warn(ar, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n",
1091 __le32_to_cpu(rxd_attention->flags),
1092 __le32_to_cpu(rxd_mpdu_start->info0),
1093 __le32_to_cpu(rxd_mpdu_start->info1),
1094 __le32_to_cpu(rxd_msdu_start_common->info0),
1095 __le32_to_cpu(rxd_msdu_start_common->info1),
1096 rxd_ppdu_start->info0,
1097 __le32_to_cpu(rxd_ppdu_start->info1),
1098 __le32_to_cpu(rxd_ppdu_start->info2),
1099 __le32_to_cpu(rxd_ppdu_start->info3),
1100 __le32_to_cpu(rxd_ppdu_start->info4));
1101
1102 ath10k_warn(ar, "msdu end %08x mpdu end %08x\n",
1103 __le32_to_cpu(rxd_msdu_end_common->info0),
1104 __le32_to_cpu(rxd_mpdu_end->info0));
1105
1106 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL,
1107 "rx desc msdu payload: ",
1108 rxd_msdu_payload, 50);
1109 }
1110
1111 status->rate_idx = mcs;
1112 status->nss = nss;
1113
1114 if (sgi)
1115 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1116
1117 status->bw = ath10k_bw_to_mac80211_bw(bw);
1118 status->encoding = RX_ENC_VHT;
1119 break;
1120 default:
1121 break;
1122 }
1123 }
1124
1125 static struct ieee80211_channel *
ath10k_htt_rx_h_peer_channel(struct ath10k * ar,struct htt_rx_desc * rxd)1126 ath10k_htt_rx_h_peer_channel(struct ath10k *ar, struct htt_rx_desc *rxd)
1127 {
1128 struct ath10k_hw_params *hw = &ar->hw_params;
1129 struct rx_attention *rxd_attention;
1130 struct rx_msdu_end_common *rxd_msdu_end_common;
1131 struct rx_mpdu_start *rxd_mpdu_start;
1132 struct ath10k_peer *peer;
1133 struct ath10k_vif *arvif;
1134 struct cfg80211_chan_def def;
1135 u16 peer_id;
1136
1137 lockdep_assert_held(&ar->data_lock);
1138
1139 if (!rxd)
1140 return NULL;
1141
1142 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
1143 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
1144 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
1145
1146 if (rxd_attention->flags &
1147 __cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID))
1148 return NULL;
1149
1150 if (!(rxd_msdu_end_common->info0 &
1151 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU)))
1152 return NULL;
1153
1154 peer_id = MS(__le32_to_cpu(rxd_mpdu_start->info0),
1155 RX_MPDU_START_INFO0_PEER_IDX);
1156
1157 peer = ath10k_peer_find_by_id(ar, peer_id);
1158 if (!peer)
1159 return NULL;
1160
1161 arvif = ath10k_get_arvif(ar, peer->vdev_id);
1162 if (WARN_ON_ONCE(!arvif))
1163 return NULL;
1164
1165 if (ath10k_mac_vif_chan(arvif->vif, &def))
1166 return NULL;
1167
1168 return def.chan;
1169 }
1170
1171 static struct ieee80211_channel *
ath10k_htt_rx_h_vdev_channel(struct ath10k * ar,u32 vdev_id)1172 ath10k_htt_rx_h_vdev_channel(struct ath10k *ar, u32 vdev_id)
1173 {
1174 struct ath10k_vif *arvif;
1175 struct cfg80211_chan_def def;
1176
1177 lockdep_assert_held(&ar->data_lock);
1178
1179 list_for_each_entry(arvif, &ar->arvifs, list) {
1180 if (arvif->vdev_id == vdev_id &&
1181 ath10k_mac_vif_chan(arvif->vif, &def) == 0)
1182 return def.chan;
1183 }
1184
1185 return NULL;
1186 }
1187
1188 static void
ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * conf,void * data)1189 ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw *hw,
1190 struct ieee80211_chanctx_conf *conf,
1191 void *data)
1192 {
1193 struct cfg80211_chan_def *def = data;
1194
1195 *def = conf->def;
1196 }
1197
1198 static struct ieee80211_channel *
ath10k_htt_rx_h_any_channel(struct ath10k * ar)1199 ath10k_htt_rx_h_any_channel(struct ath10k *ar)
1200 {
1201 struct cfg80211_chan_def def = {};
1202
1203 ieee80211_iter_chan_contexts_atomic(ar->hw,
1204 ath10k_htt_rx_h_any_chan_iter,
1205 &def);
1206
1207 return def.chan;
1208 }
1209
ath10k_htt_rx_h_channel(struct ath10k * ar,struct ieee80211_rx_status * status,struct htt_rx_desc * rxd,u32 vdev_id)1210 static bool ath10k_htt_rx_h_channel(struct ath10k *ar,
1211 struct ieee80211_rx_status *status,
1212 struct htt_rx_desc *rxd,
1213 u32 vdev_id)
1214 {
1215 struct ieee80211_channel *ch;
1216
1217 spin_lock_bh(&ar->data_lock);
1218 ch = ar->scan_channel;
1219 if (!ch)
1220 ch = ar->rx_channel;
1221 if (!ch)
1222 ch = ath10k_htt_rx_h_peer_channel(ar, rxd);
1223 if (!ch)
1224 ch = ath10k_htt_rx_h_vdev_channel(ar, vdev_id);
1225 if (!ch)
1226 ch = ath10k_htt_rx_h_any_channel(ar);
1227 if (!ch)
1228 ch = ar->tgt_oper_chan;
1229 spin_unlock_bh(&ar->data_lock);
1230
1231 if (!ch)
1232 return false;
1233
1234 status->band = ch->band;
1235 status->freq = ch->center_freq;
1236
1237 return true;
1238 }
1239
ath10k_htt_rx_h_signal(struct ath10k * ar,struct ieee80211_rx_status * status,struct htt_rx_desc * rxd)1240 static void ath10k_htt_rx_h_signal(struct ath10k *ar,
1241 struct ieee80211_rx_status *status,
1242 struct htt_rx_desc *rxd)
1243 {
1244 struct ath10k_hw_params *hw = &ar->hw_params;
1245 struct rx_ppdu_start *rxd_ppdu_start = ath10k_htt_rx_desc_get_ppdu_start(hw, rxd);
1246 int i;
1247
1248 for (i = 0; i < IEEE80211_MAX_CHAINS ; i++) {
1249 status->chains &= ~BIT(i);
1250
1251 if (rxd_ppdu_start->rssi_chains[i].pri20_mhz != 0x80) {
1252 status->chain_signal[i] = ATH10K_DEFAULT_NOISE_FLOOR +
1253 rxd_ppdu_start->rssi_chains[i].pri20_mhz;
1254
1255 status->chains |= BIT(i);
1256 }
1257 }
1258
1259 /* FIXME: Get real NF */
1260 status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
1261 rxd_ppdu_start->rssi_comb;
1262 status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
1263 }
1264
ath10k_htt_rx_h_mactime(struct ath10k * ar,struct ieee80211_rx_status * status,struct htt_rx_desc * rxd)1265 static void ath10k_htt_rx_h_mactime(struct ath10k *ar,
1266 struct ieee80211_rx_status *status,
1267 struct htt_rx_desc *rxd)
1268 {
1269 struct ath10k_hw_params *hw = &ar->hw_params;
1270 struct rx_ppdu_end_common *rxd_ppdu_end_common;
1271
1272 rxd_ppdu_end_common = ath10k_htt_rx_desc_get_ppdu_end(hw, rxd);
1273
1274 /* FIXME: TSF is known only at the end of PPDU, in the last MPDU. This
1275 * means all prior MSDUs in a PPDU are reported to mac80211 without the
1276 * TSF. Is it worth holding frames until end of PPDU is known?
1277 *
1278 * FIXME: Can we get/compute 64bit TSF?
1279 */
1280 status->mactime = __le32_to_cpu(rxd_ppdu_end_common->tsf_timestamp);
1281 status->flag |= RX_FLAG_MACTIME_END;
1282 }
1283
ath10k_htt_rx_h_ppdu(struct ath10k * ar,struct sk_buff_head * amsdu,struct ieee80211_rx_status * status,u32 vdev_id)1284 static void ath10k_htt_rx_h_ppdu(struct ath10k *ar,
1285 struct sk_buff_head *amsdu,
1286 struct ieee80211_rx_status *status,
1287 u32 vdev_id)
1288 {
1289 struct sk_buff *first;
1290 struct ath10k_hw_params *hw = &ar->hw_params;
1291 struct htt_rx_desc *rxd;
1292 struct rx_attention *rxd_attention;
1293 bool is_first_ppdu;
1294 bool is_last_ppdu;
1295
1296 if (skb_queue_empty(amsdu))
1297 return;
1298
1299 first = skb_peek(amsdu);
1300 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1301 #if defined(__linux__)
1302 (void *)first->data - hw->rx_desc_ops->rx_desc_size);
1303 #elif defined(__FreeBSD__)
1304 (u8 *)first->data - hw->rx_desc_ops->rx_desc_size);
1305 #endif
1306
1307 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
1308
1309 is_first_ppdu = !!(rxd_attention->flags &
1310 __cpu_to_le32(RX_ATTENTION_FLAGS_FIRST_MPDU));
1311 is_last_ppdu = !!(rxd_attention->flags &
1312 __cpu_to_le32(RX_ATTENTION_FLAGS_LAST_MPDU));
1313
1314 if (is_first_ppdu) {
1315 /* New PPDU starts so clear out the old per-PPDU status. */
1316 status->freq = 0;
1317 status->rate_idx = 0;
1318 status->nss = 0;
1319 status->encoding = RX_ENC_LEGACY;
1320 status->bw = RATE_INFO_BW_20;
1321
1322 status->flag &= ~RX_FLAG_MACTIME;
1323 status->flag |= RX_FLAG_NO_SIGNAL_VAL;
1324
1325 status->flag &= ~(RX_FLAG_AMPDU_IS_LAST);
1326 status->flag |= RX_FLAG_AMPDU_DETAILS | RX_FLAG_AMPDU_LAST_KNOWN;
1327 status->ampdu_reference = ar->ampdu_reference;
1328
1329 ath10k_htt_rx_h_signal(ar, status, rxd);
1330 ath10k_htt_rx_h_channel(ar, status, rxd, vdev_id);
1331 ath10k_htt_rx_h_rates(ar, status, rxd);
1332 }
1333
1334 if (is_last_ppdu) {
1335 ath10k_htt_rx_h_mactime(ar, status, rxd);
1336
1337 /* set ampdu last segment flag */
1338 status->flag |= RX_FLAG_AMPDU_IS_LAST;
1339 ar->ampdu_reference++;
1340 }
1341 }
1342
1343 static const char * const tid_to_ac[] = {
1344 "BE",
1345 "BK",
1346 "BK",
1347 "BE",
1348 "VI",
1349 "VI",
1350 "VO",
1351 "VO",
1352 };
1353
ath10k_get_tid(struct ieee80211_hdr * hdr,char * out,size_t size)1354 static char *ath10k_get_tid(struct ieee80211_hdr *hdr, char *out, size_t size)
1355 {
1356 u8 *qc;
1357 int tid;
1358
1359 if (!ieee80211_is_data_qos(hdr->frame_control))
1360 return "";
1361
1362 qc = ieee80211_get_qos_ctl(hdr);
1363 tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
1364 if (tid < 8)
1365 snprintf(out, size, "tid %d (%s)", tid, tid_to_ac[tid]);
1366 else
1367 snprintf(out, size, "tid %d", tid);
1368
1369 return out;
1370 }
1371
ath10k_htt_rx_h_queue_msdu(struct ath10k * ar,struct ieee80211_rx_status * rx_status,struct sk_buff * skb)1372 static void ath10k_htt_rx_h_queue_msdu(struct ath10k *ar,
1373 struct ieee80211_rx_status *rx_status,
1374 struct sk_buff *skb)
1375 {
1376 struct ieee80211_rx_status *status;
1377
1378 status = IEEE80211_SKB_RXCB(skb);
1379 *status = *rx_status;
1380
1381 skb_queue_tail(&ar->htt.rx_msdus_q, skb);
1382 }
1383
ath10k_process_rx(struct ath10k * ar,struct sk_buff * skb)1384 static void ath10k_process_rx(struct ath10k *ar, struct sk_buff *skb)
1385 {
1386 struct ieee80211_rx_status *status;
1387 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1388 char tid[32];
1389
1390 status = IEEE80211_SKB_RXCB(skb);
1391
1392 if (!(ar->filter_flags & FIF_FCSFAIL) &&
1393 status->flag & RX_FLAG_FAILED_FCS_CRC) {
1394 ar->stats.rx_crc_err_drop++;
1395 dev_kfree_skb_any(skb);
1396 return;
1397 }
1398
1399 ath10k_dbg(ar, ATH10K_DBG_DATA,
1400 "rx skb %p 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",
1401 skb,
1402 skb->len,
1403 ieee80211_get_SA(hdr),
1404 ath10k_get_tid(hdr, tid, sizeof(tid)),
1405 is_multicast_ether_addr(ieee80211_get_DA(hdr)) ?
1406 "mcast" : "ucast",
1407 IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl)),
1408 (status->encoding == RX_ENC_LEGACY) ? "legacy" : "",
1409 (status->encoding == RX_ENC_HT) ? "ht" : "",
1410 (status->encoding == RX_ENC_VHT) ? "vht" : "",
1411 (status->bw == RATE_INFO_BW_40) ? "40" : "",
1412 (status->bw == RATE_INFO_BW_80) ? "80" : "",
1413 (status->bw == RATE_INFO_BW_160) ? "160" : "",
1414 status->enc_flags & RX_ENC_FLAG_SHORT_GI ? "sgi " : "",
1415 status->rate_idx,
1416 status->nss,
1417 status->freq,
1418 status->band, status->flag,
1419 !!(status->flag & RX_FLAG_FAILED_FCS_CRC),
1420 !!(status->flag & RX_FLAG_MMIC_ERROR),
1421 !!(status->flag & RX_FLAG_AMSDU_MORE));
1422 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "rx skb: ",
1423 skb->data, skb->len);
1424 trace_ath10k_rx_hdr(ar, skb->data, skb->len);
1425 trace_ath10k_rx_payload(ar, skb->data, skb->len);
1426
1427 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi);
1428 }
1429
ath10k_htt_rx_nwifi_hdrlen(struct ath10k * ar,struct ieee80211_hdr * hdr)1430 static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k *ar,
1431 struct ieee80211_hdr *hdr)
1432 {
1433 int len = ieee80211_hdrlen(hdr->frame_control);
1434
1435 if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING,
1436 ar->running_fw->fw_file.fw_features))
1437 len = round_up(len, 4);
1438
1439 return len;
1440 }
1441
ath10k_htt_rx_h_undecap_raw(struct ath10k * ar,struct sk_buff * msdu,struct ieee80211_rx_status * status,enum htt_rx_mpdu_encrypt_type enctype,bool is_decrypted,const u8 first_hdr[64])1442 static void ath10k_htt_rx_h_undecap_raw(struct ath10k *ar,
1443 struct sk_buff *msdu,
1444 struct ieee80211_rx_status *status,
1445 enum htt_rx_mpdu_encrypt_type enctype,
1446 bool is_decrypted,
1447 const u8 first_hdr[64])
1448 {
1449 struct ieee80211_hdr *hdr;
1450 struct ath10k_hw_params *hw = &ar->hw_params;
1451 struct htt_rx_desc *rxd;
1452 struct rx_msdu_end_common *rxd_msdu_end_common;
1453 size_t hdr_len;
1454 size_t crypto_len;
1455 bool is_first;
1456 bool is_last;
1457 bool msdu_limit_err;
1458 int bytes_aligned = ar->hw_params.decap_align_bytes;
1459 u8 *qos;
1460
1461 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1462 #if defined(__linux__)
1463 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1464 #elif defined(__FreeBSD__)
1465 (u8 *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1466 #endif
1467
1468 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
1469 is_first = !!(rxd_msdu_end_common->info0 &
1470 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
1471 is_last = !!(rxd_msdu_end_common->info0 &
1472 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
1473
1474 /* Delivered decapped frame:
1475 * [802.11 header]
1476 * [crypto param] <-- can be trimmed if !fcs_err &&
1477 * !decrypt_err && !peer_idx_invalid
1478 * [amsdu header] <-- only if A-MSDU
1479 * [rfc1042/llc]
1480 * [payload]
1481 * [FCS] <-- at end, needs to be trimmed
1482 */
1483
1484 /* Some hardwares(QCA99x0 variants) limit number of msdus in a-msdu when
1485 * deaggregate, so that unwanted MSDU-deaggregation is avoided for
1486 * error packets. If limit exceeds, hw sends all remaining MSDUs as
1487 * a single last MSDU with this msdu limit error set.
1488 */
1489 msdu_limit_err = ath10k_htt_rx_desc_msdu_limit_error(hw, rxd);
1490
1491 /* If MSDU limit error happens, then don't warn on, the partial raw MSDU
1492 * without first MSDU is expected in that case, and handled later here.
1493 */
1494 /* This probably shouldn't happen but warn just in case */
1495 if (WARN_ON_ONCE(!is_first && !msdu_limit_err))
1496 return;
1497
1498 /* This probably shouldn't happen but warn just in case */
1499 if (WARN_ON_ONCE(!(is_first && is_last) && !msdu_limit_err))
1500 return;
1501
1502 skb_trim(msdu, msdu->len - FCS_LEN);
1503
1504 /* Push original 80211 header */
1505 if (unlikely(msdu_limit_err)) {
1506 #if defined(__linux__)
1507 hdr = (struct ieee80211_hdr *)first_hdr;
1508 #elif defined(__FreeBSD__)
1509 hdr = __DECONST(struct ieee80211_hdr *, first_hdr);
1510 #endif
1511 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1512 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
1513
1514 if (ieee80211_is_data_qos(hdr->frame_control)) {
1515 qos = ieee80211_get_qos_ctl(hdr);
1516 qos[0] |= IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1517 }
1518
1519 if (crypto_len)
1520 memcpy(skb_push(msdu, crypto_len),
1521 #if defined(__linux__)
1522 (void *)hdr + round_up(hdr_len, bytes_aligned),
1523 #elif defined(__FreeBSD__)
1524 (u8 *)hdr + round_up(hdr_len, bytes_aligned),
1525 #endif
1526 crypto_len);
1527
1528 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1529 }
1530
1531 /* In most cases this will be true for sniffed frames. It makes sense
1532 * to deliver them as-is without stripping the crypto param. This is
1533 * necessary for software based decryption.
1534 *
1535 * If there's no error then the frame is decrypted. At least that is
1536 * the case for frames that come in via fragmented rx indication.
1537 */
1538 if (!is_decrypted)
1539 return;
1540
1541 /* The payload is decrypted so strip crypto params. Start from tail
1542 * since hdr is used to compute some stuff.
1543 */
1544
1545 hdr = (void *)msdu->data;
1546
1547 /* Tail */
1548 if (status->flag & RX_FLAG_IV_STRIPPED) {
1549 skb_trim(msdu, msdu->len -
1550 ath10k_htt_rx_crypto_mic_len(ar, enctype));
1551
1552 skb_trim(msdu, msdu->len -
1553 ath10k_htt_rx_crypto_icv_len(ar, enctype));
1554 } else {
1555 /* MIC */
1556 if (status->flag & RX_FLAG_MIC_STRIPPED)
1557 skb_trim(msdu, msdu->len -
1558 ath10k_htt_rx_crypto_mic_len(ar, enctype));
1559
1560 /* ICV */
1561 if (status->flag & RX_FLAG_ICV_STRIPPED)
1562 skb_trim(msdu, msdu->len -
1563 ath10k_htt_rx_crypto_icv_len(ar, enctype));
1564 }
1565
1566 /* MMIC */
1567 if ((status->flag & RX_FLAG_MMIC_STRIPPED) &&
1568 !ieee80211_has_morefrags(hdr->frame_control) &&
1569 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
1570 skb_trim(msdu, msdu->len - MICHAEL_MIC_LEN);
1571
1572 /* Head */
1573 if (status->flag & RX_FLAG_IV_STRIPPED) {
1574 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1575 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
1576
1577 #if defined(__linux__)
1578 memmove((void *)msdu->data + crypto_len,
1579 #elif defined(__FreeBSD__)
1580 memmove((u8 *)msdu->data + crypto_len,
1581 #endif
1582 (void *)msdu->data, hdr_len);
1583 skb_pull(msdu, crypto_len);
1584 }
1585 }
1586
ath10k_htt_rx_h_undecap_nwifi(struct ath10k * ar,struct sk_buff * msdu,struct ieee80211_rx_status * status,const u8 first_hdr[64],enum htt_rx_mpdu_encrypt_type enctype)1587 static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k *ar,
1588 struct sk_buff *msdu,
1589 struct ieee80211_rx_status *status,
1590 const u8 first_hdr[64],
1591 enum htt_rx_mpdu_encrypt_type enctype)
1592 {
1593 struct ath10k_hw_params *hw = &ar->hw_params;
1594 #if defined(__linux__)
1595 struct ieee80211_hdr *hdr;
1596 #elif defined(__FreeBSD__)
1597 const struct ieee80211_hdr *hdr;
1598 struct ieee80211_hdr *hdr2;
1599 #endif
1600 struct htt_rx_desc *rxd;
1601 size_t hdr_len;
1602 u8 da[ETH_ALEN];
1603 u8 sa[ETH_ALEN];
1604 int l3_pad_bytes;
1605 int bytes_aligned = ar->hw_params.decap_align_bytes;
1606
1607 /* Delivered decapped frame:
1608 * [nwifi 802.11 header] <-- replaced with 802.11 hdr
1609 * [rfc1042/llc]
1610 *
1611 * Note: The nwifi header doesn't have QoS Control and is
1612 * (always?) a 3addr frame.
1613 *
1614 * Note2: There's no A-MSDU subframe header. Even if it's part
1615 * of an A-MSDU.
1616 */
1617
1618 /* pull decapped header and copy SA & DA */
1619 #if defined(__linux__)
1620 rxd = HTT_RX_BUF_TO_RX_DESC(hw, (void *)msdu->data -
1621 #elif defined(__FreeBSD__)
1622 rxd = HTT_RX_BUF_TO_RX_DESC(hw, (u8 *)msdu->data -
1623 #endif
1624 hw->rx_desc_ops->rx_desc_size);
1625
1626 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
1627 skb_put(msdu, l3_pad_bytes);
1628
1629 #if defined(__linux__)
1630 hdr = (struct ieee80211_hdr *)(msdu->data + l3_pad_bytes);
1631
1632 hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr);
1633 ether_addr_copy(da, ieee80211_get_DA(hdr));
1634 ether_addr_copy(sa, ieee80211_get_SA(hdr));
1635 #elif defined(__FreeBSD__)
1636 hdr2 = (struct ieee80211_hdr *)(msdu->data + l3_pad_bytes);
1637
1638 hdr_len = ath10k_htt_rx_nwifi_hdrlen(ar, hdr2);
1639 ether_addr_copy(da, ieee80211_get_DA(hdr2));
1640 ether_addr_copy(sa, ieee80211_get_SA(hdr2));
1641 #endif
1642 skb_pull(msdu, hdr_len);
1643
1644 /* push original 802.11 header */
1645 #if defined(__linux__)
1646 hdr = (struct ieee80211_hdr *)first_hdr;
1647 #elif defined(__FreeBSD__)
1648 hdr = (const struct ieee80211_hdr *)first_hdr;
1649 #endif
1650 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1651
1652 if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
1653 memcpy(skb_push(msdu,
1654 ath10k_htt_rx_crypto_param_len(ar, enctype)),
1655 #if defined(__linux__)
1656 (void *)hdr + round_up(hdr_len, bytes_aligned),
1657 #elif defined(__FreeBSD__)
1658 (const u8 *)hdr + round_up(hdr_len, bytes_aligned),
1659 #endif
1660 ath10k_htt_rx_crypto_param_len(ar, enctype));
1661 }
1662
1663 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1664
1665 /* original 802.11 header has a different DA and in
1666 * case of 4addr it may also have different SA
1667 */
1668 #if defined(__linux__)
1669 hdr = (struct ieee80211_hdr *)msdu->data;
1670 ether_addr_copy(ieee80211_get_DA(hdr), da);
1671 ether_addr_copy(ieee80211_get_SA(hdr), sa);
1672 #elif defined(__FreeBSD__)
1673 hdr2 = (struct ieee80211_hdr *)msdu->data;
1674 ether_addr_copy(ieee80211_get_DA(hdr2), da);
1675 ether_addr_copy(ieee80211_get_SA(hdr2), sa);
1676 #endif
1677 }
1678
ath10k_htt_rx_h_find_rfc1042(struct ath10k * ar,struct sk_buff * msdu,enum htt_rx_mpdu_encrypt_type enctype)1679 static void *ath10k_htt_rx_h_find_rfc1042(struct ath10k *ar,
1680 struct sk_buff *msdu,
1681 enum htt_rx_mpdu_encrypt_type enctype)
1682 {
1683 struct ieee80211_hdr *hdr;
1684 struct ath10k_hw_params *hw = &ar->hw_params;
1685 struct htt_rx_desc *rxd;
1686 struct rx_msdu_end_common *rxd_msdu_end_common;
1687 u8 *rxd_rx_hdr_status;
1688 size_t hdr_len, crypto_len;
1689 #if defined(__linux__)
1690 void *rfc1042;
1691 #elif defined(__FreeBSD__)
1692 u8 *rfc1042;
1693 #endif
1694 bool is_first, is_last, is_amsdu;
1695 int bytes_aligned = ar->hw_params.decap_align_bytes;
1696
1697 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1698 #if defined(__linux__)
1699 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1700 #elif defined(__FreeBSD__)
1701 (u8 *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1702 #endif
1703
1704 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
1705 rxd_rx_hdr_status = ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd);
1706 hdr = (void *)rxd_rx_hdr_status;
1707
1708 is_first = !!(rxd_msdu_end_common->info0 &
1709 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
1710 is_last = !!(rxd_msdu_end_common->info0 &
1711 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
1712 is_amsdu = !(is_first && is_last);
1713
1714 #if defined(__linux__)
1715 rfc1042 = hdr;
1716 #elif defined(__FreeBSD__)
1717 rfc1042 = (void *)hdr;
1718 #endif
1719
1720 if (is_first) {
1721 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1722 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
1723
1724 rfc1042 += round_up(hdr_len, bytes_aligned) +
1725 round_up(crypto_len, bytes_aligned);
1726 }
1727
1728 if (is_amsdu)
1729 rfc1042 += sizeof(struct amsdu_subframe_hdr);
1730
1731 return rfc1042;
1732 }
1733
ath10k_htt_rx_h_undecap_eth(struct ath10k * ar,struct sk_buff * msdu,struct ieee80211_rx_status * status,const u8 first_hdr[64],enum htt_rx_mpdu_encrypt_type enctype)1734 static void ath10k_htt_rx_h_undecap_eth(struct ath10k *ar,
1735 struct sk_buff *msdu,
1736 struct ieee80211_rx_status *status,
1737 const u8 first_hdr[64],
1738 enum htt_rx_mpdu_encrypt_type enctype)
1739 {
1740 struct ath10k_hw_params *hw = &ar->hw_params;
1741 #if defined(__linux__)
1742 struct ieee80211_hdr *hdr;
1743 #elif defined(__FreeBSD__)
1744 const struct ieee80211_hdr *hdr;
1745 struct ieee80211_hdr *hdr2;
1746 #endif
1747 struct ethhdr *eth;
1748 size_t hdr_len;
1749 void *rfc1042;
1750 u8 da[ETH_ALEN];
1751 u8 sa[ETH_ALEN];
1752 int l3_pad_bytes;
1753 struct htt_rx_desc *rxd;
1754 int bytes_aligned = ar->hw_params.decap_align_bytes;
1755
1756 /* Delivered decapped frame:
1757 * [eth header] <-- replaced with 802.11 hdr & rfc1042/llc
1758 * [payload]
1759 */
1760
1761 rfc1042 = ath10k_htt_rx_h_find_rfc1042(ar, msdu, enctype);
1762 if (WARN_ON_ONCE(!rfc1042))
1763 return;
1764
1765 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1766 #if defined(__linux__)
1767 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1768 #elif defined(__FreeBSD__)
1769 (u8 *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1770 #endif
1771
1772 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
1773 skb_put(msdu, l3_pad_bytes);
1774 skb_pull(msdu, l3_pad_bytes);
1775
1776 /* pull decapped header and copy SA & DA */
1777 eth = (struct ethhdr *)msdu->data;
1778 ether_addr_copy(da, eth->h_dest);
1779 ether_addr_copy(sa, eth->h_source);
1780 skb_pull(msdu, sizeof(struct ethhdr));
1781
1782 /* push rfc1042/llc/snap */
1783 memcpy(skb_push(msdu, sizeof(struct rfc1042_hdr)), rfc1042,
1784 sizeof(struct rfc1042_hdr));
1785
1786 /* push original 802.11 header */
1787 #if defined(__linux__)
1788 hdr = (struct ieee80211_hdr *)first_hdr;
1789 #elif defined(__FreeBSD__)
1790 hdr = (const struct ieee80211_hdr *)first_hdr;
1791 #endif
1792 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1793
1794 if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
1795 memcpy(skb_push(msdu,
1796 ath10k_htt_rx_crypto_param_len(ar, enctype)),
1797 #if defined(__linux__)
1798 (void *)hdr + round_up(hdr_len, bytes_aligned),
1799 #elif defined(__FreeBSD__)
1800 (const u8 *)hdr + round_up(hdr_len, bytes_aligned),
1801 #endif
1802 ath10k_htt_rx_crypto_param_len(ar, enctype));
1803 }
1804
1805 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1806
1807 /* original 802.11 header has a different DA and in
1808 * case of 4addr it may also have different SA
1809 */
1810 #if defined(__linux__)
1811 hdr = (struct ieee80211_hdr *)msdu->data;
1812 ether_addr_copy(ieee80211_get_DA(hdr), da);
1813 ether_addr_copy(ieee80211_get_SA(hdr), sa);
1814 #elif defined(__FreeBSD__)
1815 hdr2 = (struct ieee80211_hdr *)msdu->data;
1816 ether_addr_copy(ieee80211_get_DA(hdr2), da);
1817 ether_addr_copy(ieee80211_get_SA(hdr2), sa);
1818 #endif
1819 }
1820
ath10k_htt_rx_h_undecap_snap(struct ath10k * ar,struct sk_buff * msdu,struct ieee80211_rx_status * status,const u8 first_hdr[64],enum htt_rx_mpdu_encrypt_type enctype)1821 static void ath10k_htt_rx_h_undecap_snap(struct ath10k *ar,
1822 struct sk_buff *msdu,
1823 struct ieee80211_rx_status *status,
1824 const u8 first_hdr[64],
1825 enum htt_rx_mpdu_encrypt_type enctype)
1826 {
1827 struct ath10k_hw_params *hw = &ar->hw_params;
1828 #if defined(__linux__)
1829 struct ieee80211_hdr *hdr;
1830 #elif defined(__FreeBSD__)
1831 const struct ieee80211_hdr *hdr;
1832 #endif
1833 size_t hdr_len;
1834 int l3_pad_bytes;
1835 struct htt_rx_desc *rxd;
1836 int bytes_aligned = ar->hw_params.decap_align_bytes;
1837
1838 /* Delivered decapped frame:
1839 * [amsdu header] <-- replaced with 802.11 hdr
1840 * [rfc1042/llc]
1841 * [payload]
1842 */
1843
1844 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1845 #if defined(__linux__)
1846 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1847 #elif defined(__FreeBSD__)
1848 (u8 *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1849 #endif
1850
1851 l3_pad_bytes = ath10k_htt_rx_desc_get_l3_pad_bytes(&ar->hw_params, rxd);
1852
1853 skb_put(msdu, l3_pad_bytes);
1854 skb_pull(msdu, sizeof(struct amsdu_subframe_hdr) + l3_pad_bytes);
1855
1856 #if defined(__linux__)
1857 hdr = (struct ieee80211_hdr *)first_hdr;
1858 #elif defined(__FreeBSD__)
1859 hdr = (const struct ieee80211_hdr *)first_hdr;
1860 #endif
1861 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1862
1863 if (!(status->flag & RX_FLAG_IV_STRIPPED)) {
1864 memcpy(skb_push(msdu,
1865 ath10k_htt_rx_crypto_param_len(ar, enctype)),
1866 #if defined(__linux__)
1867 (void *)hdr + round_up(hdr_len, bytes_aligned),
1868 #elif defined(__FreeBSD__)
1869 (const u8 *)hdr + round_up(hdr_len, bytes_aligned),
1870 #endif
1871 ath10k_htt_rx_crypto_param_len(ar, enctype));
1872 }
1873
1874 memcpy(skb_push(msdu, hdr_len), hdr, hdr_len);
1875 }
1876
ath10k_htt_rx_h_undecap(struct ath10k * ar,struct sk_buff * msdu,struct ieee80211_rx_status * status,u8 first_hdr[64],enum htt_rx_mpdu_encrypt_type enctype,bool is_decrypted)1877 static void ath10k_htt_rx_h_undecap(struct ath10k *ar,
1878 struct sk_buff *msdu,
1879 struct ieee80211_rx_status *status,
1880 u8 first_hdr[64],
1881 enum htt_rx_mpdu_encrypt_type enctype,
1882 bool is_decrypted)
1883 {
1884 struct ath10k_hw_params *hw = &ar->hw_params;
1885 struct htt_rx_desc *rxd;
1886 struct rx_msdu_start_common *rxd_msdu_start_common;
1887 enum rx_msdu_decap_format decap;
1888
1889 /* First msdu's decapped header:
1890 * [802.11 header] <-- padded to 4 bytes long
1891 * [crypto param] <-- padded to 4 bytes long
1892 * [amsdu header] <-- only if A-MSDU
1893 * [rfc1042/llc]
1894 *
1895 * Other (2nd, 3rd, ..) msdu's decapped header:
1896 * [amsdu header] <-- only if A-MSDU
1897 * [rfc1042/llc]
1898 */
1899
1900 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1901 #if defined(__linux__)
1902 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1903 #elif defined(__FreeBSD__)
1904 (u8 *)msdu->data - hw->rx_desc_ops->rx_desc_size);
1905 #endif
1906
1907 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
1908 decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1),
1909 RX_MSDU_START_INFO1_DECAP_FORMAT);
1910
1911 switch (decap) {
1912 case RX_MSDU_DECAP_RAW:
1913 ath10k_htt_rx_h_undecap_raw(ar, msdu, status, enctype,
1914 is_decrypted, first_hdr);
1915 break;
1916 case RX_MSDU_DECAP_NATIVE_WIFI:
1917 ath10k_htt_rx_h_undecap_nwifi(ar, msdu, status, first_hdr,
1918 enctype);
1919 break;
1920 case RX_MSDU_DECAP_ETHERNET2_DIX:
1921 ath10k_htt_rx_h_undecap_eth(ar, msdu, status, first_hdr, enctype);
1922 break;
1923 case RX_MSDU_DECAP_8023_SNAP_LLC:
1924 ath10k_htt_rx_h_undecap_snap(ar, msdu, status, first_hdr,
1925 enctype);
1926 break;
1927 }
1928 }
1929
ath10k_htt_rx_get_csum_state(struct ath10k_hw_params * hw,struct sk_buff * skb)1930 static int ath10k_htt_rx_get_csum_state(struct ath10k_hw_params *hw, struct sk_buff *skb)
1931 {
1932 struct htt_rx_desc *rxd;
1933 struct rx_attention *rxd_attention;
1934 struct rx_msdu_start_common *rxd_msdu_start_common;
1935 u32 flags, info;
1936 bool is_ip4, is_ip6;
1937 bool is_tcp, is_udp;
1938 bool ip_csum_ok, tcpudp_csum_ok;
1939
1940 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
1941 #if defined(__linux__)
1942 (void *)skb->data - hw->rx_desc_ops->rx_desc_size);
1943 #elif defined(__FreeBSD__)
1944 (u8 *)skb->data - hw->rx_desc_ops->rx_desc_size);
1945 #endif
1946
1947 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
1948 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
1949 flags = __le32_to_cpu(rxd_attention->flags);
1950 info = __le32_to_cpu(rxd_msdu_start_common->info1);
1951
1952 is_ip4 = !!(info & RX_MSDU_START_INFO1_IPV4_PROTO);
1953 is_ip6 = !!(info & RX_MSDU_START_INFO1_IPV6_PROTO);
1954 is_tcp = !!(info & RX_MSDU_START_INFO1_TCP_PROTO);
1955 is_udp = !!(info & RX_MSDU_START_INFO1_UDP_PROTO);
1956 ip_csum_ok = !(flags & RX_ATTENTION_FLAGS_IP_CHKSUM_FAIL);
1957 tcpudp_csum_ok = !(flags & RX_ATTENTION_FLAGS_TCP_UDP_CHKSUM_FAIL);
1958
1959 if (!is_ip4 && !is_ip6)
1960 return CHECKSUM_NONE;
1961 if (!is_tcp && !is_udp)
1962 return CHECKSUM_NONE;
1963 if (!ip_csum_ok)
1964 return CHECKSUM_NONE;
1965 if (!tcpudp_csum_ok)
1966 return CHECKSUM_NONE;
1967
1968 return CHECKSUM_UNNECESSARY;
1969 }
1970
ath10k_htt_rx_h_csum_offload(struct ath10k_hw_params * hw,struct sk_buff * msdu)1971 static void ath10k_htt_rx_h_csum_offload(struct ath10k_hw_params *hw,
1972 struct sk_buff *msdu)
1973 {
1974 msdu->ip_summed = ath10k_htt_rx_get_csum_state(hw, msdu);
1975 }
1976
ath10k_htt_rx_h_get_pn(struct ath10k * ar,struct sk_buff * skb,enum htt_rx_mpdu_encrypt_type enctype)1977 static u64 ath10k_htt_rx_h_get_pn(struct ath10k *ar, struct sk_buff *skb,
1978 enum htt_rx_mpdu_encrypt_type enctype)
1979 {
1980 struct ieee80211_hdr *hdr;
1981 u64 pn = 0;
1982 u8 *ehdr;
1983
1984 hdr = (struct ieee80211_hdr *)skb->data;
1985 ehdr = skb->data + ieee80211_hdrlen(hdr->frame_control);
1986
1987 if (enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2) {
1988 pn = ehdr[0];
1989 pn |= (u64)ehdr[1] << 8;
1990 pn |= (u64)ehdr[4] << 16;
1991 pn |= (u64)ehdr[5] << 24;
1992 pn |= (u64)ehdr[6] << 32;
1993 pn |= (u64)ehdr[7] << 40;
1994 }
1995 return pn;
1996 }
1997
ath10k_htt_rx_h_frag_multicast_check(struct ath10k * ar,struct sk_buff * skb)1998 static bool ath10k_htt_rx_h_frag_multicast_check(struct ath10k *ar,
1999 struct sk_buff *skb)
2000 {
2001 struct ieee80211_hdr *hdr;
2002
2003 hdr = (struct ieee80211_hdr *)skb->data;
2004 return !is_multicast_ether_addr(hdr->addr1);
2005 }
2006
ath10k_htt_rx_h_frag_pn_check(struct ath10k * ar,struct sk_buff * skb,u16 peer_id,enum htt_rx_mpdu_encrypt_type enctype)2007 static bool ath10k_htt_rx_h_frag_pn_check(struct ath10k *ar,
2008 struct sk_buff *skb,
2009 u16 peer_id,
2010 enum htt_rx_mpdu_encrypt_type enctype)
2011 {
2012 struct ath10k_peer *peer;
2013 union htt_rx_pn_t *last_pn, new_pn = {};
2014 struct ieee80211_hdr *hdr;
2015 u8 tid, frag_number;
2016 u32 seq;
2017
2018 peer = ath10k_peer_find_by_id(ar, peer_id);
2019 if (!peer) {
2020 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer for frag pn check\n");
2021 return false;
2022 }
2023
2024 hdr = (struct ieee80211_hdr *)skb->data;
2025 if (ieee80211_is_data_qos(hdr->frame_control))
2026 tid = ieee80211_get_tid(hdr);
2027 else
2028 tid = ATH10K_TXRX_NON_QOS_TID;
2029
2030 last_pn = &peer->frag_tids_last_pn[tid];
2031 new_pn.pn48 = ath10k_htt_rx_h_get_pn(ar, skb, enctype);
2032 frag_number = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
2033 seq = IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl));
2034
2035 if (frag_number == 0) {
2036 last_pn->pn48 = new_pn.pn48;
2037 peer->frag_tids_seq[tid] = seq;
2038 } else {
2039 if (seq != peer->frag_tids_seq[tid])
2040 return false;
2041
2042 if (new_pn.pn48 != last_pn->pn48 + 1)
2043 return false;
2044
2045 last_pn->pn48 = new_pn.pn48;
2046 }
2047
2048 return true;
2049 }
2050
ath10k_htt_rx_h_mpdu(struct ath10k * ar,struct sk_buff_head * amsdu,struct ieee80211_rx_status * status,bool fill_crypt_header,u8 * rx_hdr,enum ath10k_pkt_rx_err * err,u16 peer_id,bool frag)2051 static void ath10k_htt_rx_h_mpdu(struct ath10k *ar,
2052 struct sk_buff_head *amsdu,
2053 struct ieee80211_rx_status *status,
2054 bool fill_crypt_header,
2055 u8 *rx_hdr,
2056 enum ath10k_pkt_rx_err *err,
2057 u16 peer_id,
2058 bool frag)
2059 {
2060 struct sk_buff *first;
2061 struct sk_buff *last;
2062 struct sk_buff *msdu, *temp;
2063 struct ath10k_hw_params *hw = &ar->hw_params;
2064 struct htt_rx_desc *rxd;
2065 struct rx_attention *rxd_attention;
2066 struct rx_mpdu_start *rxd_mpdu_start;
2067
2068 struct ieee80211_hdr *hdr;
2069 enum htt_rx_mpdu_encrypt_type enctype;
2070 u8 first_hdr[64];
2071 u8 *qos;
2072 bool has_fcs_err;
2073 bool has_crypto_err;
2074 bool has_tkip_err;
2075 bool has_peer_idx_invalid;
2076 bool is_decrypted;
2077 bool is_mgmt;
2078 u32 attention;
2079 bool frag_pn_check = true, multicast_check = true;
2080
2081 if (skb_queue_empty(amsdu))
2082 return;
2083
2084 first = skb_peek(amsdu);
2085 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
2086 #if defined(__linux__)
2087 (void *)first->data - hw->rx_desc_ops->rx_desc_size);
2088 #elif defined(__FreeBSD__)
2089 (u8 *)first->data - hw->rx_desc_ops->rx_desc_size);
2090 #endif
2091
2092 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
2093 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
2094
2095 is_mgmt = !!(rxd_attention->flags &
2096 __cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE));
2097
2098 enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0),
2099 RX_MPDU_START_INFO0_ENCRYPT_TYPE);
2100
2101 /* First MSDU's Rx descriptor in an A-MSDU contains full 802.11
2102 * decapped header. It'll be used for undecapping of each MSDU.
2103 */
2104 hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd);
2105 memcpy(first_hdr, hdr, RX_HTT_HDR_STATUS_LEN);
2106
2107 if (rx_hdr)
2108 memcpy(rx_hdr, hdr, RX_HTT_HDR_STATUS_LEN);
2109
2110 /* Each A-MSDU subframe will use the original header as the base and be
2111 * reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl.
2112 */
2113 hdr = (void *)first_hdr;
2114
2115 if (ieee80211_is_data_qos(hdr->frame_control)) {
2116 qos = ieee80211_get_qos_ctl(hdr);
2117 qos[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
2118 }
2119
2120 /* Some attention flags are valid only in the last MSDU. */
2121 last = skb_peek_tail(amsdu);
2122 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
2123 #if defined(__linux__)
2124 (void *)last->data - hw->rx_desc_ops->rx_desc_size);
2125 #elif defined(__FreeBSD__)
2126 (u8 *)last->data - hw->rx_desc_ops->rx_desc_size);
2127 #endif
2128
2129 rxd_attention = ath10k_htt_rx_desc_get_attention(hw, rxd);
2130 attention = __le32_to_cpu(rxd_attention->flags);
2131
2132 has_fcs_err = !!(attention & RX_ATTENTION_FLAGS_FCS_ERR);
2133 has_crypto_err = !!(attention & RX_ATTENTION_FLAGS_DECRYPT_ERR);
2134 has_tkip_err = !!(attention & RX_ATTENTION_FLAGS_TKIP_MIC_ERR);
2135 has_peer_idx_invalid = !!(attention & RX_ATTENTION_FLAGS_PEER_IDX_INVALID);
2136
2137 /* Note: If hardware captures an encrypted frame that it can't decrypt,
2138 * e.g. due to fcs error, missing peer or invalid key data it will
2139 * report the frame as raw.
2140 */
2141 is_decrypted = (enctype != HTT_RX_MPDU_ENCRYPT_NONE &&
2142 !has_fcs_err &&
2143 !has_crypto_err &&
2144 !has_peer_idx_invalid);
2145
2146 /* Clear per-MPDU flags while leaving per-PPDU flags intact. */
2147 status->flag &= ~(RX_FLAG_FAILED_FCS_CRC |
2148 RX_FLAG_MMIC_ERROR |
2149 RX_FLAG_DECRYPTED |
2150 RX_FLAG_IV_STRIPPED |
2151 RX_FLAG_ONLY_MONITOR |
2152 RX_FLAG_MMIC_STRIPPED);
2153
2154 if (has_fcs_err)
2155 status->flag |= RX_FLAG_FAILED_FCS_CRC;
2156
2157 if (has_tkip_err)
2158 status->flag |= RX_FLAG_MMIC_ERROR;
2159
2160 if (err) {
2161 if (has_fcs_err)
2162 *err = ATH10K_PKT_RX_ERR_FCS;
2163 else if (has_tkip_err)
2164 *err = ATH10K_PKT_RX_ERR_TKIP;
2165 else if (has_crypto_err)
2166 *err = ATH10K_PKT_RX_ERR_CRYPT;
2167 else if (has_peer_idx_invalid)
2168 *err = ATH10K_PKT_RX_ERR_PEER_IDX_INVAL;
2169 }
2170
2171 /* Firmware reports all necessary management frames via WMI already.
2172 * They are not reported to monitor interfaces at all so pass the ones
2173 * coming via HTT to monitor interfaces instead. This simplifies
2174 * matters a lot.
2175 */
2176 if (is_mgmt)
2177 status->flag |= RX_FLAG_ONLY_MONITOR;
2178
2179 if (is_decrypted) {
2180 status->flag |= RX_FLAG_DECRYPTED;
2181
2182 if (likely(!is_mgmt))
2183 status->flag |= RX_FLAG_MMIC_STRIPPED;
2184
2185 if (fill_crypt_header)
2186 status->flag |= RX_FLAG_MIC_STRIPPED |
2187 RX_FLAG_ICV_STRIPPED;
2188 else
2189 status->flag |= RX_FLAG_IV_STRIPPED;
2190 }
2191
2192 skb_queue_walk(amsdu, msdu) {
2193 if (frag && !fill_crypt_header && is_decrypted &&
2194 enctype == HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2)
2195 frag_pn_check = ath10k_htt_rx_h_frag_pn_check(ar,
2196 msdu,
2197 peer_id,
2198 enctype);
2199
2200 if (frag)
2201 multicast_check = ath10k_htt_rx_h_frag_multicast_check(ar,
2202 msdu);
2203
2204 if (!frag_pn_check || !multicast_check) {
2205 /* Discard the fragment with invalid PN or multicast DA
2206 */
2207 temp = msdu->prev;
2208 __skb_unlink(msdu, amsdu);
2209 dev_kfree_skb_any(msdu);
2210 msdu = temp;
2211 frag_pn_check = true;
2212 multicast_check = true;
2213 continue;
2214 }
2215
2216 ath10k_htt_rx_h_csum_offload(&ar->hw_params, msdu);
2217
2218 if (frag && !fill_crypt_header &&
2219 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
2220 status->flag &= ~RX_FLAG_MMIC_STRIPPED;
2221
2222 ath10k_htt_rx_h_undecap(ar, msdu, status, first_hdr, enctype,
2223 is_decrypted);
2224
2225 /* Undecapping involves copying the original 802.11 header back
2226 * to sk_buff. If frame is protected and hardware has decrypted
2227 * it then remove the protected bit.
2228 */
2229 if (!is_decrypted)
2230 continue;
2231 if (is_mgmt)
2232 continue;
2233
2234 if (fill_crypt_header)
2235 continue;
2236
2237 hdr = (void *)msdu->data;
2238 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2239
2240 if (frag && !fill_crypt_header &&
2241 enctype == HTT_RX_MPDU_ENCRYPT_TKIP_WPA)
2242 status->flag &= ~RX_FLAG_IV_STRIPPED &
2243 ~RX_FLAG_MMIC_STRIPPED;
2244 }
2245 }
2246
ath10k_htt_rx_h_enqueue(struct ath10k * ar,struct sk_buff_head * amsdu,struct ieee80211_rx_status * status)2247 static void ath10k_htt_rx_h_enqueue(struct ath10k *ar,
2248 struct sk_buff_head *amsdu,
2249 struct ieee80211_rx_status *status)
2250 {
2251 struct sk_buff *msdu;
2252 struct sk_buff *first_subframe;
2253
2254 first_subframe = skb_peek(amsdu);
2255
2256 while ((msdu = __skb_dequeue(amsdu))) {
2257 /* Setup per-MSDU flags */
2258 if (skb_queue_empty(amsdu))
2259 status->flag &= ~RX_FLAG_AMSDU_MORE;
2260 else
2261 status->flag |= RX_FLAG_AMSDU_MORE;
2262
2263 if (msdu == first_subframe) {
2264 first_subframe = NULL;
2265 status->flag &= ~RX_FLAG_ALLOW_SAME_PN;
2266 } else {
2267 status->flag |= RX_FLAG_ALLOW_SAME_PN;
2268 }
2269
2270 ath10k_htt_rx_h_queue_msdu(ar, status, msdu);
2271 }
2272 }
2273
ath10k_unchain_msdu(struct sk_buff_head * amsdu,unsigned long * unchain_cnt)2274 static int ath10k_unchain_msdu(struct sk_buff_head *amsdu,
2275 unsigned long *unchain_cnt)
2276 {
2277 struct sk_buff *skb, *first;
2278 int space;
2279 int total_len = 0;
2280 int amsdu_len = skb_queue_len(amsdu);
2281
2282 /* TODO: Might could optimize this by using
2283 * skb_try_coalesce or similar method to
2284 * decrease copying, or maybe get mac80211 to
2285 * provide a way to just receive a list of
2286 * skb?
2287 */
2288
2289 first = __skb_dequeue(amsdu);
2290
2291 /* Allocate total length all at once. */
2292 skb_queue_walk(amsdu, skb)
2293 total_len += skb->len;
2294
2295 space = total_len - skb_tailroom(first);
2296 if ((space > 0) &&
2297 (pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0)) {
2298 /* TODO: bump some rx-oom error stat */
2299 /* put it back together so we can free the
2300 * whole list at once.
2301 */
2302 __skb_queue_head(amsdu, first);
2303 return -1;
2304 }
2305
2306 /* Walk list again, copying contents into
2307 * msdu_head
2308 */
2309 while ((skb = __skb_dequeue(amsdu))) {
2310 skb_copy_from_linear_data(skb, skb_put(first, skb->len),
2311 skb->len);
2312 dev_kfree_skb_any(skb);
2313 }
2314
2315 __skb_queue_head(amsdu, first);
2316
2317 *unchain_cnt += amsdu_len - 1;
2318
2319 return 0;
2320 }
2321
ath10k_htt_rx_h_unchain(struct ath10k * ar,struct sk_buff_head * amsdu,unsigned long * drop_cnt,unsigned long * unchain_cnt)2322 static void ath10k_htt_rx_h_unchain(struct ath10k *ar,
2323 struct sk_buff_head *amsdu,
2324 unsigned long *drop_cnt,
2325 unsigned long *unchain_cnt)
2326 {
2327 struct sk_buff *first;
2328 struct ath10k_hw_params *hw = &ar->hw_params;
2329 struct htt_rx_desc *rxd;
2330 struct rx_msdu_start_common *rxd_msdu_start_common;
2331 struct rx_frag_info_common *rxd_frag_info;
2332 enum rx_msdu_decap_format decap;
2333
2334 first = skb_peek(amsdu);
2335 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
2336 #if defined(__linux__)
2337 (void *)first->data - hw->rx_desc_ops->rx_desc_size);
2338 #elif defined(__FreeBSD__)
2339 (u8 *)first->data - hw->rx_desc_ops->rx_desc_size);
2340 #endif
2341
2342 rxd_msdu_start_common = ath10k_htt_rx_desc_get_msdu_start(hw, rxd);
2343 rxd_frag_info = ath10k_htt_rx_desc_get_frag_info(hw, rxd);
2344 decap = MS(__le32_to_cpu(rxd_msdu_start_common->info1),
2345 RX_MSDU_START_INFO1_DECAP_FORMAT);
2346
2347 /* FIXME: Current unchaining logic can only handle simple case of raw
2348 * msdu chaining. If decapping is other than raw the chaining may be
2349 * more complex and this isn't handled by the current code. Don't even
2350 * try re-constructing such frames - it'll be pretty much garbage.
2351 */
2352 if (decap != RX_MSDU_DECAP_RAW ||
2353 skb_queue_len(amsdu) != 1 + rxd_frag_info->ring2_more_count) {
2354 *drop_cnt += skb_queue_len(amsdu);
2355 __skb_queue_purge(amsdu);
2356 return;
2357 }
2358
2359 ath10k_unchain_msdu(amsdu, unchain_cnt);
2360 }
2361
ath10k_htt_rx_validate_amsdu(struct ath10k * ar,struct sk_buff_head * amsdu)2362 static bool ath10k_htt_rx_validate_amsdu(struct ath10k *ar,
2363 struct sk_buff_head *amsdu)
2364 {
2365 u8 *subframe_hdr;
2366 struct sk_buff *first;
2367 bool is_first, is_last;
2368 struct ath10k_hw_params *hw = &ar->hw_params;
2369 struct htt_rx_desc *rxd;
2370 struct rx_msdu_end_common *rxd_msdu_end_common;
2371 struct rx_mpdu_start *rxd_mpdu_start;
2372 struct ieee80211_hdr *hdr;
2373 size_t hdr_len, crypto_len;
2374 enum htt_rx_mpdu_encrypt_type enctype;
2375 int bytes_aligned = ar->hw_params.decap_align_bytes;
2376
2377 first = skb_peek(amsdu);
2378
2379 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
2380 #if defined(__linux__)
2381 (void *)first->data - hw->rx_desc_ops->rx_desc_size);
2382 #elif defined(__FreeBSD__)
2383 (u8 *)first->data - hw->rx_desc_ops->rx_desc_size);
2384 #endif
2385
2386 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
2387 rxd_mpdu_start = ath10k_htt_rx_desc_get_mpdu_start(hw, rxd);
2388 hdr = (void *)ath10k_htt_rx_desc_get_rx_hdr_status(hw, rxd);
2389
2390 is_first = !!(rxd_msdu_end_common->info0 &
2391 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU));
2392 is_last = !!(rxd_msdu_end_common->info0 &
2393 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU));
2394
2395 /* Return in case of non-aggregated msdu */
2396 if (is_first && is_last)
2397 return true;
2398
2399 /* First msdu flag is not set for the first msdu of the list */
2400 if (!is_first)
2401 return false;
2402
2403 enctype = MS(__le32_to_cpu(rxd_mpdu_start->info0),
2404 RX_MPDU_START_INFO0_ENCRYPT_TYPE);
2405
2406 hdr_len = ieee80211_hdrlen(hdr->frame_control);
2407 crypto_len = ath10k_htt_rx_crypto_param_len(ar, enctype);
2408
2409 subframe_hdr = (u8 *)hdr + round_up(hdr_len, bytes_aligned) +
2410 crypto_len;
2411
2412 /* Validate if the amsdu has a proper first subframe.
2413 * There are chances a single msdu can be received as amsdu when
2414 * the unauthenticated amsdu flag of a QoS header
2415 * gets flipped in non-SPP AMSDU's, in such cases the first
2416 * subframe has llc/snap header in place of a valid da.
2417 * return false if the da matches rfc1042 pattern
2418 */
2419 if (ether_addr_equal(subframe_hdr, rfc1042_header))
2420 return false;
2421
2422 return true;
2423 }
2424
ath10k_htt_rx_amsdu_allowed(struct ath10k * ar,struct sk_buff_head * amsdu,struct ieee80211_rx_status * rx_status)2425 static bool ath10k_htt_rx_amsdu_allowed(struct ath10k *ar,
2426 struct sk_buff_head *amsdu,
2427 struct ieee80211_rx_status *rx_status)
2428 {
2429 if (!rx_status->freq) {
2430 ath10k_dbg(ar, ATH10K_DBG_HTT, "no channel configured; ignoring frame(s)!\n");
2431 return false;
2432 }
2433
2434 if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags)) {
2435 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx cac running\n");
2436 return false;
2437 }
2438
2439 if (!ath10k_htt_rx_validate_amsdu(ar, amsdu)) {
2440 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid amsdu received\n");
2441 return false;
2442 }
2443
2444 return true;
2445 }
2446
ath10k_htt_rx_h_filter(struct ath10k * ar,struct sk_buff_head * amsdu,struct ieee80211_rx_status * rx_status,unsigned long * drop_cnt)2447 static void ath10k_htt_rx_h_filter(struct ath10k *ar,
2448 struct sk_buff_head *amsdu,
2449 struct ieee80211_rx_status *rx_status,
2450 unsigned long *drop_cnt)
2451 {
2452 if (skb_queue_empty(amsdu))
2453 return;
2454
2455 if (ath10k_htt_rx_amsdu_allowed(ar, amsdu, rx_status))
2456 return;
2457
2458 if (drop_cnt)
2459 *drop_cnt += skb_queue_len(amsdu);
2460
2461 __skb_queue_purge(amsdu);
2462 }
2463
ath10k_htt_rx_handle_amsdu(struct ath10k_htt * htt)2464 static int ath10k_htt_rx_handle_amsdu(struct ath10k_htt *htt)
2465 {
2466 struct ath10k *ar = htt->ar;
2467 struct ieee80211_rx_status *rx_status = &htt->rx_status;
2468 struct sk_buff_head amsdu;
2469 int ret;
2470 unsigned long drop_cnt = 0;
2471 unsigned long unchain_cnt = 0;
2472 unsigned long drop_cnt_filter = 0;
2473 unsigned long msdus_to_queue, num_msdus;
2474 enum ath10k_pkt_rx_err err = ATH10K_PKT_RX_ERR_MAX;
2475 u8 first_hdr[RX_HTT_HDR_STATUS_LEN];
2476
2477 __skb_queue_head_init(&amsdu);
2478
2479 spin_lock_bh(&htt->rx_ring.lock);
2480 if (htt->rx_confused) {
2481 spin_unlock_bh(&htt->rx_ring.lock);
2482 return -EIO;
2483 }
2484 ret = ath10k_htt_rx_amsdu_pop(htt, &amsdu);
2485 spin_unlock_bh(&htt->rx_ring.lock);
2486
2487 if (ret < 0) {
2488 ath10k_warn(ar, "rx ring became corrupted: %d\n", ret);
2489 __skb_queue_purge(&amsdu);
2490 /* FIXME: It's probably a good idea to reboot the
2491 * device instead of leaving it inoperable.
2492 */
2493 htt->rx_confused = true;
2494 return ret;
2495 }
2496
2497 num_msdus = skb_queue_len(&amsdu);
2498
2499 ath10k_htt_rx_h_ppdu(ar, &amsdu, rx_status, 0xffff);
2500
2501 /* only for ret = 1 indicates chained msdus */
2502 if (ret > 0)
2503 ath10k_htt_rx_h_unchain(ar, &amsdu, &drop_cnt, &unchain_cnt);
2504
2505 ath10k_htt_rx_h_filter(ar, &amsdu, rx_status, &drop_cnt_filter);
2506 ath10k_htt_rx_h_mpdu(ar, &amsdu, rx_status, true, first_hdr, &err, 0,
2507 false);
2508 msdus_to_queue = skb_queue_len(&amsdu);
2509 ath10k_htt_rx_h_enqueue(ar, &amsdu, rx_status);
2510
2511 ath10k_sta_update_rx_tid_stats(ar, first_hdr, num_msdus, err,
2512 unchain_cnt, drop_cnt, drop_cnt_filter,
2513 msdus_to_queue);
2514
2515 return 0;
2516 }
2517
ath10k_htt_rx_mpdu_desc_pn_hl(struct htt_hl_rx_desc * rx_desc,union htt_rx_pn_t * pn,int pn_len_bits)2518 static void ath10k_htt_rx_mpdu_desc_pn_hl(struct htt_hl_rx_desc *rx_desc,
2519 union htt_rx_pn_t *pn,
2520 int pn_len_bits)
2521 {
2522 switch (pn_len_bits) {
2523 case 48:
2524 pn->pn48 = __le32_to_cpu(rx_desc->pn_31_0) +
2525 ((u64)(__le32_to_cpu(rx_desc->u0.pn_63_32) & 0xFFFF) << 32);
2526 break;
2527 case 24:
2528 pn->pn24 = __le32_to_cpu(rx_desc->pn_31_0);
2529 break;
2530 }
2531 }
2532
ath10k_htt_rx_pn_cmp48(union htt_rx_pn_t * new_pn,union htt_rx_pn_t * old_pn)2533 static bool ath10k_htt_rx_pn_cmp48(union htt_rx_pn_t *new_pn,
2534 union htt_rx_pn_t *old_pn)
2535 {
2536 return ((new_pn->pn48 & 0xffffffffffffULL) <=
2537 (old_pn->pn48 & 0xffffffffffffULL));
2538 }
2539
ath10k_htt_rx_pn_check_replay_hl(struct ath10k * ar,struct ath10k_peer * peer,struct htt_rx_indication_hl * rx)2540 static bool ath10k_htt_rx_pn_check_replay_hl(struct ath10k *ar,
2541 struct ath10k_peer *peer,
2542 struct htt_rx_indication_hl *rx)
2543 {
2544 bool last_pn_valid, pn_invalid = false;
2545 enum htt_txrx_sec_cast_type sec_index;
2546 enum htt_security_types sec_type;
2547 union htt_rx_pn_t new_pn = {};
2548 struct htt_hl_rx_desc *rx_desc;
2549 union htt_rx_pn_t *last_pn;
2550 u32 rx_desc_info, tid;
2551 int num_mpdu_ranges;
2552
2553 lockdep_assert_held(&ar->data_lock);
2554
2555 if (!peer)
2556 return false;
2557
2558 if (!(rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU))
2559 return false;
2560
2561 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2562 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2563
2564 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges];
2565 rx_desc_info = __le32_to_cpu(rx_desc->info);
2566
2567 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED))
2568 return false;
2569
2570 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2571 last_pn_valid = peer->tids_last_pn_valid[tid];
2572 last_pn = &peer->tids_last_pn[tid];
2573
2574 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST))
2575 sec_index = HTT_TXRX_SEC_MCAST;
2576 else
2577 sec_index = HTT_TXRX_SEC_UCAST;
2578
2579 sec_type = peer->rx_pn[sec_index].sec_type;
2580 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2581
2582 if (sec_type != HTT_SECURITY_AES_CCMP &&
2583 sec_type != HTT_SECURITY_TKIP &&
2584 sec_type != HTT_SECURITY_TKIP_NOMIC)
2585 return false;
2586
2587 if (last_pn_valid)
2588 pn_invalid = ath10k_htt_rx_pn_cmp48(&new_pn, last_pn);
2589 else
2590 peer->tids_last_pn_valid[tid] = true;
2591
2592 if (!pn_invalid)
2593 last_pn->pn48 = new_pn.pn48;
2594
2595 return pn_invalid;
2596 }
2597
ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt * htt,struct htt_rx_indication_hl * rx,struct sk_buff * skb,enum htt_rx_pn_check_type check_pn_type,enum htt_rx_tkip_demic_type tkip_mic_type)2598 static bool ath10k_htt_rx_proc_rx_ind_hl(struct ath10k_htt *htt,
2599 struct htt_rx_indication_hl *rx,
2600 struct sk_buff *skb,
2601 enum htt_rx_pn_check_type check_pn_type,
2602 enum htt_rx_tkip_demic_type tkip_mic_type)
2603 {
2604 struct ath10k *ar = htt->ar;
2605 struct ath10k_peer *peer;
2606 struct htt_rx_indication_mpdu_range *mpdu_ranges;
2607 struct fw_rx_desc_hl *fw_desc;
2608 enum htt_txrx_sec_cast_type sec_index;
2609 enum htt_security_types sec_type;
2610 union htt_rx_pn_t new_pn = {};
2611 struct htt_hl_rx_desc *rx_desc;
2612 struct ieee80211_hdr *hdr;
2613 struct ieee80211_rx_status *rx_status;
2614 u16 peer_id;
2615 u8 rx_desc_len;
2616 int num_mpdu_ranges;
2617 size_t tot_hdr_len;
2618 struct ieee80211_channel *ch;
2619 bool pn_invalid, qos, first_msdu;
2620 u32 tid, rx_desc_info;
2621
2622 peer_id = __le16_to_cpu(rx->hdr.peer_id);
2623 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2624
2625 spin_lock_bh(&ar->data_lock);
2626 peer = ath10k_peer_find_by_id(ar, peer_id);
2627 spin_unlock_bh(&ar->data_lock);
2628 if (!peer && peer_id != HTT_INVALID_PEERID)
2629 ath10k_warn(ar, "Got RX ind from invalid peer: %u\n", peer_id);
2630
2631 if (!peer)
2632 return true;
2633
2634 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
2635 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2636 mpdu_ranges = htt_rx_ind_get_mpdu_ranges_hl(rx);
2637 fw_desc = &rx->fw_desc;
2638 rx_desc_len = fw_desc->len;
2639
2640 if (fw_desc->u.bits.discard) {
2641 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt discard mpdu\n");
2642 goto err;
2643 }
2644
2645 /* I have not yet seen any case where num_mpdu_ranges > 1.
2646 * qcacld does not seem handle that case either, so we introduce the
2647 * same limitation here as well.
2648 */
2649 if (num_mpdu_ranges > 1)
2650 ath10k_warn(ar,
2651 "Unsupported number of MPDU ranges: %d, ignoring all but the first\n",
2652 num_mpdu_ranges);
2653
2654 if (mpdu_ranges->mpdu_range_status !=
2655 HTT_RX_IND_MPDU_STATUS_OK &&
2656 mpdu_ranges->mpdu_range_status !=
2657 HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR) {
2658 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt mpdu_range_status %d\n",
2659 mpdu_ranges->mpdu_range_status);
2660 goto err;
2661 }
2662
2663 rx_desc = (struct htt_hl_rx_desc *)&rx->mpdu_ranges[num_mpdu_ranges];
2664 rx_desc_info = __le32_to_cpu(rx_desc->info);
2665
2666 if (MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST))
2667 sec_index = HTT_TXRX_SEC_MCAST;
2668 else
2669 sec_index = HTT_TXRX_SEC_UCAST;
2670
2671 sec_type = peer->rx_pn[sec_index].sec_type;
2672 first_msdu = rx->fw_desc.flags & FW_RX_DESC_FLAGS_FIRST_MSDU;
2673
2674 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2675
2676 if (check_pn_type == HTT_RX_PN_CHECK && tid >= IEEE80211_NUM_TIDS) {
2677 spin_lock_bh(&ar->data_lock);
2678 pn_invalid = ath10k_htt_rx_pn_check_replay_hl(ar, peer, rx);
2679 spin_unlock_bh(&ar->data_lock);
2680
2681 if (pn_invalid)
2682 goto err;
2683 }
2684
2685 /* Strip off all headers before the MAC header before delivery to
2686 * mac80211
2687 */
2688 tot_hdr_len = sizeof(struct htt_resp_hdr) + sizeof(rx->hdr) +
2689 sizeof(rx->ppdu) + sizeof(rx->prefix) +
2690 sizeof(rx->fw_desc) +
2691 sizeof(*mpdu_ranges) * num_mpdu_ranges + rx_desc_len;
2692
2693 skb_pull(skb, tot_hdr_len);
2694
2695 hdr = (struct ieee80211_hdr *)skb->data;
2696 qos = ieee80211_is_data_qos(hdr->frame_control);
2697
2698 rx_status = IEEE80211_SKB_RXCB(skb);
2699 memset(rx_status, 0, sizeof(*rx_status));
2700
2701 if (rx->ppdu.combined_rssi == 0) {
2702 /* SDIO firmware does not provide signal */
2703 rx_status->signal = 0;
2704 rx_status->flag |= RX_FLAG_NO_SIGNAL_VAL;
2705 } else {
2706 rx_status->signal = ATH10K_DEFAULT_NOISE_FLOOR +
2707 rx->ppdu.combined_rssi;
2708 rx_status->flag &= ~RX_FLAG_NO_SIGNAL_VAL;
2709 }
2710
2711 spin_lock_bh(&ar->data_lock);
2712 ch = ar->scan_channel;
2713 if (!ch)
2714 ch = ar->rx_channel;
2715 if (!ch)
2716 ch = ath10k_htt_rx_h_any_channel(ar);
2717 if (!ch)
2718 ch = ar->tgt_oper_chan;
2719 spin_unlock_bh(&ar->data_lock);
2720
2721 if (ch) {
2722 rx_status->band = ch->band;
2723 rx_status->freq = ch->center_freq;
2724 }
2725 if (rx->fw_desc.flags & FW_RX_DESC_FLAGS_LAST_MSDU)
2726 rx_status->flag &= ~RX_FLAG_AMSDU_MORE;
2727 else
2728 rx_status->flag |= RX_FLAG_AMSDU_MORE;
2729
2730 /* Not entirely sure about this, but all frames from the chipset has
2731 * the protected flag set even though they have already been decrypted.
2732 * Unmasking this flag is necessary in order for mac80211 not to drop
2733 * the frame.
2734 * TODO: Verify this is always the case or find out a way to check
2735 * if there has been hw decryption.
2736 */
2737 if (ieee80211_has_protected(hdr->frame_control)) {
2738 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2739 rx_status->flag |= RX_FLAG_DECRYPTED |
2740 RX_FLAG_IV_STRIPPED |
2741 RX_FLAG_MMIC_STRIPPED;
2742
2743 if (tid < IEEE80211_NUM_TIDS &&
2744 first_msdu &&
2745 check_pn_type == HTT_RX_PN_CHECK &&
2746 (sec_type == HTT_SECURITY_AES_CCMP ||
2747 sec_type == HTT_SECURITY_TKIP ||
2748 sec_type == HTT_SECURITY_TKIP_NOMIC)) {
2749 u8 offset, *ivp, i;
2750 s8 keyidx = 0;
2751 __le64 pn48 = cpu_to_le64(new_pn.pn48);
2752
2753 hdr = (struct ieee80211_hdr *)skb->data;
2754 offset = ieee80211_hdrlen(hdr->frame_control);
2755 hdr->frame_control |= __cpu_to_le16(IEEE80211_FCTL_PROTECTED);
2756 rx_status->flag &= ~RX_FLAG_IV_STRIPPED;
2757
2758 memmove(skb->data - IEEE80211_CCMP_HDR_LEN,
2759 skb->data, offset);
2760 skb_push(skb, IEEE80211_CCMP_HDR_LEN);
2761 ivp = skb->data + offset;
2762 memset(skb->data + offset, 0, IEEE80211_CCMP_HDR_LEN);
2763 /* Ext IV */
2764 ivp[IEEE80211_WEP_IV_LEN - 1] |= ATH10K_IEEE80211_EXTIV;
2765
2766 for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
2767 if (peer->keys[i] &&
2768 peer->keys[i]->flags & IEEE80211_KEY_FLAG_PAIRWISE)
2769 keyidx = peer->keys[i]->keyidx;
2770 }
2771
2772 /* Key ID */
2773 ivp[IEEE80211_WEP_IV_LEN - 1] |= keyidx << 6;
2774
2775 if (sec_type == HTT_SECURITY_AES_CCMP) {
2776 rx_status->flag |= RX_FLAG_MIC_STRIPPED;
2777 /* pn 0, pn 1 */
2778 memcpy(skb->data + offset, &pn48, 2);
2779 /* pn 1, pn 3 , pn 34 , pn 5 */
2780 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4);
2781 } else {
2782 rx_status->flag |= RX_FLAG_ICV_STRIPPED;
2783 /* TSC 0 */
2784 memcpy(skb->data + offset + 2, &pn48, 1);
2785 /* TSC 1 */
2786 memcpy(skb->data + offset, ((u8 *)&pn48) + 1, 1);
2787 /* TSC 2 , TSC 3 , TSC 4 , TSC 5*/
2788 memcpy(skb->data + offset + 4, ((u8 *)&pn48) + 2, 4);
2789 }
2790 }
2791 }
2792
2793 if (tkip_mic_type == HTT_RX_TKIP_MIC)
2794 rx_status->flag &= ~RX_FLAG_IV_STRIPPED &
2795 ~RX_FLAG_MMIC_STRIPPED;
2796
2797 if (mpdu_ranges->mpdu_range_status == HTT_RX_IND_MPDU_STATUS_TKIP_MIC_ERR)
2798 rx_status->flag |= RX_FLAG_MMIC_ERROR;
2799
2800 if (!qos && tid < IEEE80211_NUM_TIDS) {
2801 u8 offset;
2802 __le16 qos_ctrl = 0;
2803
2804 hdr = (struct ieee80211_hdr *)skb->data;
2805 offset = ieee80211_hdrlen(hdr->frame_control);
2806
2807 hdr->frame_control |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
2808 memmove(skb->data - IEEE80211_QOS_CTL_LEN, skb->data, offset);
2809 skb_push(skb, IEEE80211_QOS_CTL_LEN);
2810 qos_ctrl = cpu_to_le16(tid);
2811 memcpy(skb->data + offset, &qos_ctrl, IEEE80211_QOS_CTL_LEN);
2812 }
2813
2814 if (ar->napi.dev)
2815 ieee80211_rx_napi(ar->hw, NULL, skb, &ar->napi);
2816 else
2817 ieee80211_rx_ni(ar->hw, skb);
2818
2819 /* We have delivered the skb to the upper layers (mac80211) so we
2820 * must not free it.
2821 */
2822 return false;
2823 err:
2824 /* Tell the caller that it must free the skb since we have not
2825 * consumed it
2826 */
2827 return true;
2828 }
2829
ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff * skb,u16 head_len,u16 hdr_len)2830 static int ath10k_htt_rx_frag_tkip_decap_nomic(struct sk_buff *skb,
2831 u16 head_len,
2832 u16 hdr_len)
2833 {
2834 u8 *ivp, *orig_hdr;
2835
2836 orig_hdr = skb->data;
2837 ivp = orig_hdr + hdr_len + head_len;
2838
2839 /* the ExtIV bit is always set to 1 for TKIP */
2840 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2841 return -EINVAL;
2842
2843 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
2844 skb_pull(skb, IEEE80211_TKIP_IV_LEN);
2845 skb_trim(skb, skb->len - ATH10K_IEEE80211_TKIP_MICLEN);
2846 return 0;
2847 }
2848
ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff * skb,u16 head_len,u16 hdr_len)2849 static int ath10k_htt_rx_frag_tkip_decap_withmic(struct sk_buff *skb,
2850 u16 head_len,
2851 u16 hdr_len)
2852 {
2853 u8 *ivp, *orig_hdr;
2854
2855 orig_hdr = skb->data;
2856 ivp = orig_hdr + hdr_len + head_len;
2857
2858 /* the ExtIV bit is always set to 1 for TKIP */
2859 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2860 return -EINVAL;
2861
2862 memmove(orig_hdr + IEEE80211_TKIP_IV_LEN, orig_hdr, head_len + hdr_len);
2863 skb_pull(skb, IEEE80211_TKIP_IV_LEN);
2864 skb_trim(skb, skb->len - IEEE80211_TKIP_ICV_LEN);
2865 return 0;
2866 }
2867
ath10k_htt_rx_frag_ccmp_decap(struct sk_buff * skb,u16 head_len,u16 hdr_len)2868 static int ath10k_htt_rx_frag_ccmp_decap(struct sk_buff *skb,
2869 u16 head_len,
2870 u16 hdr_len)
2871 {
2872 u8 *ivp, *orig_hdr;
2873
2874 orig_hdr = skb->data;
2875 ivp = orig_hdr + hdr_len + head_len;
2876
2877 /* the ExtIV bit is always set to 1 for CCMP */
2878 if (!(ivp[IEEE80211_WEP_IV_LEN - 1] & ATH10K_IEEE80211_EXTIV))
2879 return -EINVAL;
2880
2881 skb_trim(skb, skb->len - IEEE80211_CCMP_MIC_LEN);
2882 memmove(orig_hdr + IEEE80211_CCMP_HDR_LEN, orig_hdr, head_len + hdr_len);
2883 skb_pull(skb, IEEE80211_CCMP_HDR_LEN);
2884 return 0;
2885 }
2886
ath10k_htt_rx_frag_wep_decap(struct sk_buff * skb,u16 head_len,u16 hdr_len)2887 static int ath10k_htt_rx_frag_wep_decap(struct sk_buff *skb,
2888 u16 head_len,
2889 u16 hdr_len)
2890 {
2891 u8 *orig_hdr;
2892
2893 orig_hdr = skb->data;
2894
2895 memmove(orig_hdr + IEEE80211_WEP_IV_LEN,
2896 orig_hdr, head_len + hdr_len);
2897 skb_pull(skb, IEEE80211_WEP_IV_LEN);
2898 skb_trim(skb, skb->len - IEEE80211_WEP_ICV_LEN);
2899 return 0;
2900 }
2901
ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt * htt,struct htt_rx_fragment_indication * rx,struct sk_buff * skb)2902 static bool ath10k_htt_rx_proc_rx_frag_ind_hl(struct ath10k_htt *htt,
2903 struct htt_rx_fragment_indication *rx,
2904 struct sk_buff *skb)
2905 {
2906 struct ath10k *ar = htt->ar;
2907 enum htt_rx_tkip_demic_type tkip_mic = HTT_RX_NON_TKIP_MIC;
2908 enum htt_txrx_sec_cast_type sec_index;
2909 struct htt_rx_indication_hl *rx_hl;
2910 enum htt_security_types sec_type;
2911 u32 tid, frag, seq, rx_desc_info;
2912 union htt_rx_pn_t new_pn = {};
2913 struct htt_hl_rx_desc *rx_desc;
2914 u16 peer_id, sc, hdr_space;
2915 union htt_rx_pn_t *last_pn;
2916 struct ieee80211_hdr *hdr;
2917 int ret, num_mpdu_ranges;
2918 struct ath10k_peer *peer;
2919 struct htt_resp *resp;
2920 size_t tot_hdr_len;
2921
2922 resp = (struct htt_resp *)(skb->data + HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
2923 skb_pull(skb, HTT_RX_FRAG_IND_INFO0_HEADER_LEN);
2924 skb_trim(skb, skb->len - FCS_LEN);
2925
2926 peer_id = __le16_to_cpu(rx->peer_id);
2927 rx_hl = (struct htt_rx_indication_hl *)(&resp->rx_ind_hl);
2928
2929 spin_lock_bh(&ar->data_lock);
2930 peer = ath10k_peer_find_by_id(ar, peer_id);
2931 if (!peer) {
2932 ath10k_dbg(ar, ATH10K_DBG_HTT, "invalid peer: %u\n", peer_id);
2933 goto err;
2934 }
2935
2936 num_mpdu_ranges = MS(__le32_to_cpu(rx_hl->hdr.info1),
2937 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
2938
2939 tot_hdr_len = sizeof(struct htt_resp_hdr) +
2940 sizeof(rx_hl->hdr) +
2941 sizeof(rx_hl->ppdu) +
2942 sizeof(rx_hl->prefix) +
2943 sizeof(rx_hl->fw_desc) +
2944 sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges;
2945
2946 tid = MS(rx_hl->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
2947 rx_desc = (struct htt_hl_rx_desc *)(skb->data + tot_hdr_len);
2948 rx_desc_info = __le32_to_cpu(rx_desc->info);
2949
2950 hdr = (struct ieee80211_hdr *)((u8 *)rx_desc + rx_hl->fw_desc.len);
2951
2952 if (is_multicast_ether_addr(hdr->addr1)) {
2953 /* Discard the fragment with multicast DA */
2954 goto err;
2955 }
2956
2957 if (!MS(rx_desc_info, HTT_RX_DESC_HL_INFO_ENCRYPTED)) {
2958 spin_unlock_bh(&ar->data_lock);
2959 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
2960 HTT_RX_NON_PN_CHECK,
2961 HTT_RX_NON_TKIP_MIC);
2962 }
2963
2964 if (ieee80211_has_retry(hdr->frame_control))
2965 goto err;
2966
2967 hdr_space = ieee80211_hdrlen(hdr->frame_control);
2968 sc = __le16_to_cpu(hdr->seq_ctrl);
2969 seq = IEEE80211_SEQ_TO_SN(sc);
2970 frag = sc & IEEE80211_SCTL_FRAG;
2971
2972 sec_index = MS(rx_desc_info, HTT_RX_DESC_HL_INFO_MCAST_BCAST) ?
2973 HTT_TXRX_SEC_MCAST : HTT_TXRX_SEC_UCAST;
2974 sec_type = peer->rx_pn[sec_index].sec_type;
2975 ath10k_htt_rx_mpdu_desc_pn_hl(rx_desc, &new_pn, peer->rx_pn[sec_index].pn_len);
2976
2977 switch (sec_type) {
2978 case HTT_SECURITY_TKIP:
2979 tkip_mic = HTT_RX_TKIP_MIC;
2980 ret = ath10k_htt_rx_frag_tkip_decap_withmic(skb,
2981 tot_hdr_len +
2982 rx_hl->fw_desc.len,
2983 hdr_space);
2984 if (ret)
2985 goto err;
2986 break;
2987 case HTT_SECURITY_TKIP_NOMIC:
2988 ret = ath10k_htt_rx_frag_tkip_decap_nomic(skb,
2989 tot_hdr_len +
2990 rx_hl->fw_desc.len,
2991 hdr_space);
2992 if (ret)
2993 goto err;
2994 break;
2995 case HTT_SECURITY_AES_CCMP:
2996 ret = ath10k_htt_rx_frag_ccmp_decap(skb,
2997 tot_hdr_len + rx_hl->fw_desc.len,
2998 hdr_space);
2999 if (ret)
3000 goto err;
3001 break;
3002 case HTT_SECURITY_WEP128:
3003 case HTT_SECURITY_WEP104:
3004 case HTT_SECURITY_WEP40:
3005 ret = ath10k_htt_rx_frag_wep_decap(skb,
3006 tot_hdr_len + rx_hl->fw_desc.len,
3007 hdr_space);
3008 if (ret)
3009 goto err;
3010 break;
3011 default:
3012 break;
3013 }
3014
3015 resp = (struct htt_resp *)(skb->data);
3016
3017 if (sec_type != HTT_SECURITY_AES_CCMP &&
3018 sec_type != HTT_SECURITY_TKIP &&
3019 sec_type != HTT_SECURITY_TKIP_NOMIC) {
3020 spin_unlock_bh(&ar->data_lock);
3021 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
3022 HTT_RX_NON_PN_CHECK,
3023 HTT_RX_NON_TKIP_MIC);
3024 }
3025
3026 last_pn = &peer->frag_tids_last_pn[tid];
3027
3028 if (frag == 0) {
3029 if (ath10k_htt_rx_pn_check_replay_hl(ar, peer, &resp->rx_ind_hl))
3030 goto err;
3031
3032 last_pn->pn48 = new_pn.pn48;
3033 peer->frag_tids_seq[tid] = seq;
3034 } else if (sec_type == HTT_SECURITY_AES_CCMP) {
3035 if (seq != peer->frag_tids_seq[tid])
3036 goto err;
3037
3038 if (new_pn.pn48 != last_pn->pn48 + 1)
3039 goto err;
3040
3041 last_pn->pn48 = new_pn.pn48;
3042 last_pn = &peer->tids_last_pn[tid];
3043 last_pn->pn48 = new_pn.pn48;
3044 }
3045
3046 spin_unlock_bh(&ar->data_lock);
3047
3048 return ath10k_htt_rx_proc_rx_ind_hl(htt, &resp->rx_ind_hl, skb,
3049 HTT_RX_NON_PN_CHECK, tkip_mic);
3050
3051 err:
3052 spin_unlock_bh(&ar->data_lock);
3053
3054 /* Tell the caller that it must free the skb since we have not
3055 * consumed it
3056 */
3057 return true;
3058 }
3059
ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt * htt,struct htt_rx_indication * rx)3060 static void ath10k_htt_rx_proc_rx_ind_ll(struct ath10k_htt *htt,
3061 struct htt_rx_indication *rx)
3062 {
3063 struct ath10k *ar = htt->ar;
3064 struct htt_rx_indication_mpdu_range *mpdu_ranges;
3065 int num_mpdu_ranges;
3066 int i, mpdu_count = 0;
3067 u16 peer_id;
3068 u8 tid;
3069
3070 num_mpdu_ranges = MS(__le32_to_cpu(rx->hdr.info1),
3071 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES);
3072 peer_id = __le16_to_cpu(rx->hdr.peer_id);
3073 tid = MS(rx->hdr.info0, HTT_RX_INDICATION_INFO0_EXT_TID);
3074
3075 mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx);
3076
3077 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ",
3078 rx, struct_size(rx, mpdu_ranges, num_mpdu_ranges));
3079
3080 for (i = 0; i < num_mpdu_ranges; i++)
3081 mpdu_count += mpdu_ranges[i].mpdu_count;
3082
3083 atomic_add(mpdu_count, &htt->num_mpdus_ready);
3084
3085 ath10k_sta_update_rx_tid_stats_ampdu(ar, peer_id, tid, mpdu_ranges,
3086 num_mpdu_ranges);
3087 }
3088
ath10k_htt_rx_tx_compl_ind(struct ath10k * ar,struct sk_buff * skb)3089 static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar,
3090 struct sk_buff *skb)
3091 {
3092 struct ath10k_htt *htt = &ar->htt;
3093 struct htt_resp *resp = (struct htt_resp *)skb->data;
3094 struct htt_tx_done tx_done = {};
3095 int status = MS(resp->data_tx_completion.flags, HTT_DATA_TX_STATUS);
3096 __le16 msdu_id, *msdus;
3097 bool rssi_enabled = false;
3098 u8 msdu_count = 0, num_airtime_records, tid;
3099 int i, htt_pad = 0;
3100 struct htt_data_tx_compl_ppdu_dur *ppdu_info;
3101 struct ath10k_peer *peer;
3102 u16 ppdu_info_offset = 0, peer_id;
3103 u32 tx_duration;
3104
3105 switch (status) {
3106 case HTT_DATA_TX_STATUS_NO_ACK:
3107 tx_done.status = HTT_TX_COMPL_STATE_NOACK;
3108 break;
3109 case HTT_DATA_TX_STATUS_OK:
3110 tx_done.status = HTT_TX_COMPL_STATE_ACK;
3111 break;
3112 case HTT_DATA_TX_STATUS_DISCARD:
3113 case HTT_DATA_TX_STATUS_POSTPONE:
3114 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
3115 break;
3116 default:
3117 ath10k_warn(ar, "unhandled tx completion status %d\n", status);
3118 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
3119 break;
3120 }
3121
3122 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx completion num_msdus %d\n",
3123 resp->data_tx_completion.num_msdus);
3124
3125 msdu_count = resp->data_tx_completion.num_msdus;
3126 msdus = resp->data_tx_completion.msdus;
3127 rssi_enabled = ath10k_is_rssi_enable(&ar->hw_params, resp);
3128
3129 if (rssi_enabled)
3130 htt_pad = ath10k_tx_data_rssi_get_pad_bytes(&ar->hw_params,
3131 resp);
3132
3133 for (i = 0; i < msdu_count; i++) {
3134 msdu_id = msdus[i];
3135 tx_done.msdu_id = __le16_to_cpu(msdu_id);
3136
3137 if (rssi_enabled) {
3138 /* Total no of MSDUs should be even,
3139 * if odd MSDUs are sent firmware fills
3140 * last msdu id with 0xffff
3141 */
3142 if (msdu_count & 0x01) {
3143 msdu_id = msdus[msdu_count + i + 1 + htt_pad];
3144 tx_done.ack_rssi = __le16_to_cpu(msdu_id);
3145 } else {
3146 msdu_id = msdus[msdu_count + i + htt_pad];
3147 tx_done.ack_rssi = __le16_to_cpu(msdu_id);
3148 }
3149 }
3150
3151 /* kfifo_put: In practice firmware shouldn't fire off per-CE
3152 * interrupt and main interrupt (MSI/-X range case) for the same
3153 * HTC service so it should be safe to use kfifo_put w/o lock.
3154 *
3155 * From kfifo_put() documentation:
3156 * Note that with only one concurrent reader and one concurrent
3157 * writer, you don't need extra locking to use these macro.
3158 */
3159 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL) {
3160 ath10k_txrx_tx_unref(htt, &tx_done);
3161 } else if (!kfifo_put(&htt->txdone_fifo, tx_done)) {
3162 ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n",
3163 tx_done.msdu_id, tx_done.status);
3164 ath10k_txrx_tx_unref(htt, &tx_done);
3165 }
3166 }
3167
3168 if (!(resp->data_tx_completion.flags2 & HTT_TX_CMPL_FLAG_PPDU_DURATION_PRESENT))
3169 return;
3170
3171 ppdu_info_offset = (msdu_count & 0x01) ? msdu_count + 1 : msdu_count;
3172
3173 if (rssi_enabled)
3174 ppdu_info_offset += ppdu_info_offset;
3175
3176 if (resp->data_tx_completion.flags2 &
3177 (HTT_TX_CMPL_FLAG_PPID_PRESENT | HTT_TX_CMPL_FLAG_PA_PRESENT))
3178 ppdu_info_offset += 2;
3179
3180 ppdu_info = (struct htt_data_tx_compl_ppdu_dur *)&msdus[ppdu_info_offset];
3181 num_airtime_records = FIELD_GET(HTT_TX_COMPL_PPDU_DUR_INFO0_NUM_ENTRIES_MASK,
3182 __le32_to_cpu(ppdu_info->info0));
3183
3184 for (i = 0; i < num_airtime_records; i++) {
3185 struct htt_data_tx_ppdu_dur *ppdu_dur;
3186 u32 info0;
3187
3188 ppdu_dur = &ppdu_info->ppdu_dur[i];
3189 info0 = __le32_to_cpu(ppdu_dur->info0);
3190
3191 peer_id = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_PEER_ID_MASK,
3192 info0);
3193 rcu_read_lock();
3194 spin_lock_bh(&ar->data_lock);
3195
3196 peer = ath10k_peer_find_by_id(ar, peer_id);
3197 if (!peer || !peer->sta) {
3198 spin_unlock_bh(&ar->data_lock);
3199 rcu_read_unlock();
3200 continue;
3201 }
3202
3203 tid = FIELD_GET(HTT_TX_PPDU_DUR_INFO0_TID_MASK, info0) &
3204 IEEE80211_QOS_CTL_TID_MASK;
3205 tx_duration = __le32_to_cpu(ppdu_dur->tx_duration);
3206
3207 ieee80211_sta_register_airtime(peer->sta, tid, tx_duration, 0);
3208
3209 spin_unlock_bh(&ar->data_lock);
3210 rcu_read_unlock();
3211 }
3212 }
3213
ath10k_htt_rx_addba(struct ath10k * ar,struct htt_resp * resp)3214 static void ath10k_htt_rx_addba(struct ath10k *ar, struct htt_resp *resp)
3215 {
3216 struct htt_rx_addba *ev = &resp->rx_addba;
3217 struct ath10k_peer *peer;
3218 struct ath10k_vif *arvif;
3219 u16 info0, tid, peer_id;
3220
3221 info0 = __le16_to_cpu(ev->info0);
3222 tid = MS(info0, HTT_RX_BA_INFO0_TID);
3223 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID);
3224
3225 ath10k_dbg(ar, ATH10K_DBG_HTT,
3226 "htt rx addba tid %u peer_id %u size %u\n",
3227 tid, peer_id, ev->window_size);
3228
3229 spin_lock_bh(&ar->data_lock);
3230 peer = ath10k_peer_find_by_id(ar, peer_id);
3231 if (!peer) {
3232 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n",
3233 peer_id);
3234 spin_unlock_bh(&ar->data_lock);
3235 return;
3236 }
3237
3238 arvif = ath10k_get_arvif(ar, peer->vdev_id);
3239 if (!arvif) {
3240 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n",
3241 peer->vdev_id);
3242 spin_unlock_bh(&ar->data_lock);
3243 return;
3244 }
3245
3246 ath10k_dbg(ar, ATH10K_DBG_HTT,
3247 "htt rx start rx ba session sta %pM tid %u size %u\n",
3248 peer->addr, tid, ev->window_size);
3249
3250 ieee80211_start_rx_ba_session_offl(arvif->vif, peer->addr, tid);
3251 spin_unlock_bh(&ar->data_lock);
3252 }
3253
ath10k_htt_rx_delba(struct ath10k * ar,struct htt_resp * resp)3254 static void ath10k_htt_rx_delba(struct ath10k *ar, struct htt_resp *resp)
3255 {
3256 struct htt_rx_delba *ev = &resp->rx_delba;
3257 struct ath10k_peer *peer;
3258 struct ath10k_vif *arvif;
3259 u16 info0, tid, peer_id;
3260
3261 info0 = __le16_to_cpu(ev->info0);
3262 tid = MS(info0, HTT_RX_BA_INFO0_TID);
3263 peer_id = MS(info0, HTT_RX_BA_INFO0_PEER_ID);
3264
3265 ath10k_dbg(ar, ATH10K_DBG_HTT,
3266 "htt rx delba tid %u peer_id %u\n",
3267 tid, peer_id);
3268
3269 spin_lock_bh(&ar->data_lock);
3270 peer = ath10k_peer_find_by_id(ar, peer_id);
3271 if (!peer) {
3272 ath10k_warn(ar, "received addba event for invalid peer_id: %u\n",
3273 peer_id);
3274 spin_unlock_bh(&ar->data_lock);
3275 return;
3276 }
3277
3278 arvif = ath10k_get_arvif(ar, peer->vdev_id);
3279 if (!arvif) {
3280 ath10k_warn(ar, "received addba event for invalid vdev_id: %u\n",
3281 peer->vdev_id);
3282 spin_unlock_bh(&ar->data_lock);
3283 return;
3284 }
3285
3286 ath10k_dbg(ar, ATH10K_DBG_HTT,
3287 "htt rx stop rx ba session sta %pM tid %u\n",
3288 peer->addr, tid);
3289
3290 ieee80211_stop_rx_ba_session_offl(arvif->vif, peer->addr, tid);
3291 spin_unlock_bh(&ar->data_lock);
3292 }
3293
ath10k_htt_rx_extract_amsdu(struct ath10k_hw_params * hw,struct sk_buff_head * list,struct sk_buff_head * amsdu)3294 static int ath10k_htt_rx_extract_amsdu(struct ath10k_hw_params *hw,
3295 struct sk_buff_head *list,
3296 struct sk_buff_head *amsdu)
3297 {
3298 struct sk_buff *msdu;
3299 struct htt_rx_desc *rxd;
3300 struct rx_msdu_end_common *rxd_msdu_end_common;
3301
3302 if (skb_queue_empty(list))
3303 return -ENOBUFS;
3304
3305 if (WARN_ON(!skb_queue_empty(amsdu)))
3306 return -EINVAL;
3307
3308 while ((msdu = __skb_dequeue(list))) {
3309 __skb_queue_tail(amsdu, msdu);
3310
3311 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
3312 #if defined(__linux__)
3313 (void *)msdu->data -
3314 #elif defined(__FreeBSD__)
3315 (u8 *)msdu->data -
3316 #endif
3317 hw->rx_desc_ops->rx_desc_size);
3318
3319 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
3320 if (rxd_msdu_end_common->info0 &
3321 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))
3322 break;
3323 }
3324
3325 msdu = skb_peek_tail(amsdu);
3326 rxd = HTT_RX_BUF_TO_RX_DESC(hw,
3327 #if defined(__linux__)
3328 (void *)msdu->data - hw->rx_desc_ops->rx_desc_size);
3329 #elif defined(__FreeBSD__)
3330 (u8 *)msdu->data - hw->rx_desc_ops->rx_desc_size);
3331 #endif
3332
3333 rxd_msdu_end_common = ath10k_htt_rx_desc_get_msdu_end(hw, rxd);
3334 if (!(rxd_msdu_end_common->info0 &
3335 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU))) {
3336 skb_queue_splice_init(amsdu, list);
3337 return -EAGAIN;
3338 }
3339
3340 return 0;
3341 }
3342
ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status * status,struct sk_buff * skb)3343 static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status *status,
3344 struct sk_buff *skb)
3345 {
3346 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
3347
3348 if (!ieee80211_has_protected(hdr->frame_control))
3349 return;
3350
3351 /* Offloaded frames are already decrypted but firmware insists they are
3352 * protected in the 802.11 header. Strip the flag. Otherwise mac80211
3353 * will drop the frame.
3354 */
3355
3356 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
3357 status->flag |= RX_FLAG_DECRYPTED |
3358 RX_FLAG_IV_STRIPPED |
3359 RX_FLAG_MMIC_STRIPPED;
3360 }
3361
ath10k_htt_rx_h_rx_offload(struct ath10k * ar,struct sk_buff_head * list)3362 static void ath10k_htt_rx_h_rx_offload(struct ath10k *ar,
3363 struct sk_buff_head *list)
3364 {
3365 struct ath10k_htt *htt = &ar->htt;
3366 struct ieee80211_rx_status *status = &htt->rx_status;
3367 struct htt_rx_offload_msdu *rx;
3368 struct sk_buff *msdu;
3369 size_t offset;
3370
3371 while ((msdu = __skb_dequeue(list))) {
3372 /* Offloaded frames don't have Rx descriptor. Instead they have
3373 * a short meta information header.
3374 */
3375
3376 rx = (void *)msdu->data;
3377
3378 skb_put(msdu, sizeof(*rx));
3379 skb_pull(msdu, sizeof(*rx));
3380
3381 if (skb_tailroom(msdu) < __le16_to_cpu(rx->msdu_len)) {
3382 ath10k_warn(ar, "dropping frame: offloaded rx msdu is too long!\n");
3383 dev_kfree_skb_any(msdu);
3384 continue;
3385 }
3386
3387 skb_put(msdu, __le16_to_cpu(rx->msdu_len));
3388
3389 /* Offloaded rx header length isn't multiple of 2 nor 4 so the
3390 * actual payload is unaligned. Align the frame. Otherwise
3391 * mac80211 complains. This shouldn't reduce performance much
3392 * because these offloaded frames are rare.
3393 */
3394 offset = 4 - ((unsigned long)msdu->data & 3);
3395 skb_put(msdu, offset);
3396 memmove(msdu->data + offset, msdu->data, msdu->len);
3397 skb_pull(msdu, offset);
3398
3399 /* FIXME: The frame is NWifi. Re-construct QoS Control
3400 * if possible later.
3401 */
3402
3403 memset(status, 0, sizeof(*status));
3404 status->flag |= RX_FLAG_NO_SIGNAL_VAL;
3405
3406 ath10k_htt_rx_h_rx_offload_prot(status, msdu);
3407 ath10k_htt_rx_h_channel(ar, status, NULL, rx->vdev_id);
3408 ath10k_htt_rx_h_queue_msdu(ar, status, msdu);
3409 }
3410 }
3411
ath10k_htt_rx_in_ord_ind(struct ath10k * ar,struct sk_buff * skb)3412 static int ath10k_htt_rx_in_ord_ind(struct ath10k *ar, struct sk_buff *skb)
3413 {
3414 struct ath10k_htt *htt = &ar->htt;
3415 struct htt_resp *resp = (void *)skb->data;
3416 struct ieee80211_rx_status *status = &htt->rx_status;
3417 struct sk_buff_head list;
3418 struct sk_buff_head amsdu;
3419 u16 peer_id;
3420 u16 msdu_count;
3421 u8 vdev_id;
3422 u8 tid;
3423 bool offload;
3424 bool frag;
3425 int ret;
3426
3427 lockdep_assert_held(&htt->rx_ring.lock);
3428
3429 if (htt->rx_confused)
3430 return -EIO;
3431
3432 skb_pull(skb, sizeof(resp->hdr));
3433 skb_pull(skb, sizeof(resp->rx_in_ord_ind));
3434
3435 peer_id = __le16_to_cpu(resp->rx_in_ord_ind.peer_id);
3436 msdu_count = __le16_to_cpu(resp->rx_in_ord_ind.msdu_count);
3437 vdev_id = resp->rx_in_ord_ind.vdev_id;
3438 tid = SM(resp->rx_in_ord_ind.info, HTT_RX_IN_ORD_IND_INFO_TID);
3439 offload = !!(resp->rx_in_ord_ind.info &
3440 HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK);
3441 frag = !!(resp->rx_in_ord_ind.info & HTT_RX_IN_ORD_IND_INFO_FRAG_MASK);
3442
3443 ath10k_dbg(ar, ATH10K_DBG_HTT,
3444 "htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n",
3445 vdev_id, peer_id, tid, offload, frag, msdu_count);
3446
3447 if (skb->len < msdu_count * sizeof(*resp->rx_in_ord_ind.msdu_descs32)) {
3448 ath10k_warn(ar, "dropping invalid in order rx indication\n");
3449 return -EINVAL;
3450 }
3451
3452 /* The event can deliver more than 1 A-MSDU. Each A-MSDU is later
3453 * extracted and processed.
3454 */
3455 __skb_queue_head_init(&list);
3456 if (ar->hw_params.target_64bit)
3457 ret = ath10k_htt_rx_pop_paddr64_list(htt, &resp->rx_in_ord_ind,
3458 &list);
3459 else
3460 ret = ath10k_htt_rx_pop_paddr32_list(htt, &resp->rx_in_ord_ind,
3461 &list);
3462
3463 if (ret < 0) {
3464 ath10k_warn(ar, "failed to pop paddr list: %d\n", ret);
3465 htt->rx_confused = true;
3466 return -EIO;
3467 }
3468
3469 /* Offloaded frames are very different and need to be handled
3470 * separately.
3471 */
3472 if (offload)
3473 ath10k_htt_rx_h_rx_offload(ar, &list);
3474
3475 while (!skb_queue_empty(&list)) {
3476 __skb_queue_head_init(&amsdu);
3477 ret = ath10k_htt_rx_extract_amsdu(&ar->hw_params, &list, &amsdu);
3478 switch (ret) {
3479 case 0:
3480 /* Note: The in-order indication may report interleaved
3481 * frames from different PPDUs meaning reported rx rate
3482 * to mac80211 isn't accurate/reliable. It's still
3483 * better to report something than nothing though. This
3484 * should still give an idea about rx rate to the user.
3485 */
3486 ath10k_htt_rx_h_ppdu(ar, &amsdu, status, vdev_id);
3487 ath10k_htt_rx_h_filter(ar, &amsdu, status, NULL);
3488 ath10k_htt_rx_h_mpdu(ar, &amsdu, status, false, NULL,
3489 NULL, peer_id, frag);
3490 ath10k_htt_rx_h_enqueue(ar, &amsdu, status);
3491 break;
3492 case -EAGAIN:
3493 fallthrough;
3494 default:
3495 /* Should not happen. */
3496 ath10k_warn(ar, "failed to extract amsdu: %d\n", ret);
3497 htt->rx_confused = true;
3498 __skb_queue_purge(&list);
3499 return -EIO;
3500 }
3501 }
3502 return ret;
3503 }
3504
ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k * ar,const __le32 * resp_ids,int num_resp_ids)3505 static void ath10k_htt_rx_tx_fetch_resp_id_confirm(struct ath10k *ar,
3506 const __le32 *resp_ids,
3507 int num_resp_ids)
3508 {
3509 int i;
3510 u32 resp_id;
3511
3512 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm num_resp_ids %d\n",
3513 num_resp_ids);
3514
3515 for (i = 0; i < num_resp_ids; i++) {
3516 resp_id = le32_to_cpu(resp_ids[i]);
3517
3518 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm resp_id %u\n",
3519 resp_id);
3520
3521 /* TODO: free resp_id */
3522 }
3523 }
3524
ath10k_htt_rx_tx_fetch_ind(struct ath10k * ar,struct sk_buff * skb)3525 static void ath10k_htt_rx_tx_fetch_ind(struct ath10k *ar, struct sk_buff *skb)
3526 {
3527 struct ieee80211_hw *hw = ar->hw;
3528 struct ieee80211_txq *txq;
3529 struct htt_resp *resp = (struct htt_resp *)skb->data;
3530 struct htt_tx_fetch_record *record;
3531 size_t len;
3532 size_t max_num_bytes;
3533 size_t max_num_msdus;
3534 size_t num_bytes;
3535 size_t num_msdus;
3536 const __le32 *resp_ids;
3537 u16 num_records;
3538 u16 num_resp_ids;
3539 u16 peer_id;
3540 u8 tid;
3541 int ret;
3542 int i;
3543 bool may_tx;
3544
3545 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind\n");
3546
3547 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_ind);
3548 if (unlikely(skb->len < len)) {
3549 ath10k_warn(ar, "received corrupted tx_fetch_ind event: buffer too short\n");
3550 return;
3551 }
3552
3553 num_records = le16_to_cpu(resp->tx_fetch_ind.num_records);
3554 num_resp_ids = le16_to_cpu(resp->tx_fetch_ind.num_resp_ids);
3555
3556 len += sizeof(resp->tx_fetch_ind.records[0]) * num_records;
3557 len += sizeof(resp->tx_fetch_ind.resp_ids[0]) * num_resp_ids;
3558
3559 if (unlikely(skb->len < len)) {
3560 ath10k_warn(ar, "received corrupted tx_fetch_ind event: too many records/resp_ids\n");
3561 return;
3562 }
3563
3564 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch ind num records %u num resps %u seq %u\n",
3565 num_records, num_resp_ids,
3566 le16_to_cpu(resp->tx_fetch_ind.fetch_seq_num));
3567
3568 if (!ar->htt.tx_q_state.enabled) {
3569 ath10k_warn(ar, "received unexpected tx_fetch_ind event: not enabled\n");
3570 return;
3571 }
3572
3573 if (ar->htt.tx_q_state.mode == HTT_TX_MODE_SWITCH_PUSH) {
3574 ath10k_warn(ar, "received unexpected tx_fetch_ind event: in push mode\n");
3575 return;
3576 }
3577
3578 rcu_read_lock();
3579
3580 for (i = 0; i < num_records; i++) {
3581 record = &resp->tx_fetch_ind.records[i];
3582 peer_id = MS(le16_to_cpu(record->info),
3583 HTT_TX_FETCH_RECORD_INFO_PEER_ID);
3584 tid = MS(le16_to_cpu(record->info),
3585 HTT_TX_FETCH_RECORD_INFO_TID);
3586 max_num_msdus = le16_to_cpu(record->num_msdus);
3587 max_num_bytes = le32_to_cpu(record->num_bytes);
3588
3589 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch record %i peer_id %u tid %u msdus %zu bytes %zu\n",
3590 i, peer_id, tid, max_num_msdus, max_num_bytes);
3591
3592 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
3593 unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
3594 ath10k_warn(ar, "received out of range peer_id %u tid %u\n",
3595 peer_id, tid);
3596 continue;
3597 }
3598
3599 spin_lock_bh(&ar->data_lock);
3600 txq = ath10k_mac_txq_lookup(ar, peer_id, tid);
3601 spin_unlock_bh(&ar->data_lock);
3602
3603 /* It is okay to release the lock and use txq because RCU read
3604 * lock is held.
3605 */
3606
3607 if (unlikely(!txq)) {
3608 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n",
3609 peer_id, tid);
3610 continue;
3611 }
3612
3613 num_msdus = 0;
3614 num_bytes = 0;
3615
3616 ieee80211_txq_schedule_start(hw, txq->ac);
3617 may_tx = ieee80211_txq_may_transmit(hw, txq);
3618 while (num_msdus < max_num_msdus &&
3619 num_bytes < max_num_bytes) {
3620 if (!may_tx)
3621 break;
3622
3623 ret = ath10k_mac_tx_push_txq(hw, txq);
3624 if (ret < 0)
3625 break;
3626
3627 num_msdus++;
3628 num_bytes += ret;
3629 }
3630 ieee80211_return_txq(hw, txq, false);
3631 ieee80211_txq_schedule_end(hw, txq->ac);
3632
3633 record->num_msdus = cpu_to_le16(num_msdus);
3634 record->num_bytes = cpu_to_le32(num_bytes);
3635
3636 ath10k_htt_tx_txq_recalc(hw, txq);
3637 }
3638
3639 rcu_read_unlock();
3640
3641 resp_ids = ath10k_htt_get_tx_fetch_ind_resp_ids(&resp->tx_fetch_ind);
3642 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar, resp_ids, num_resp_ids);
3643
3644 ret = ath10k_htt_tx_fetch_resp(ar,
3645 resp->tx_fetch_ind.token,
3646 resp->tx_fetch_ind.fetch_seq_num,
3647 resp->tx_fetch_ind.records,
3648 num_records);
3649 if (unlikely(ret)) {
3650 ath10k_warn(ar, "failed to submit tx fetch resp for token 0x%08x: %d\n",
3651 le32_to_cpu(resp->tx_fetch_ind.token), ret);
3652 /* FIXME: request fw restart */
3653 }
3654
3655 ath10k_htt_tx_txq_sync(ar);
3656 }
3657
ath10k_htt_rx_tx_fetch_confirm(struct ath10k * ar,struct sk_buff * skb)3658 static void ath10k_htt_rx_tx_fetch_confirm(struct ath10k *ar,
3659 struct sk_buff *skb)
3660 {
3661 const struct htt_resp *resp = (void *)skb->data;
3662 size_t len;
3663 int num_resp_ids;
3664
3665 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx fetch confirm\n");
3666
3667 len = sizeof(resp->hdr) + sizeof(resp->tx_fetch_confirm);
3668 if (unlikely(skb->len < len)) {
3669 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: buffer too short\n");
3670 return;
3671 }
3672
3673 num_resp_ids = le16_to_cpu(resp->tx_fetch_confirm.num_resp_ids);
3674 len += sizeof(resp->tx_fetch_confirm.resp_ids[0]) * num_resp_ids;
3675
3676 if (unlikely(skb->len < len)) {
3677 ath10k_warn(ar, "received corrupted tx_fetch_confirm event: resp_ids buffer overflow\n");
3678 return;
3679 }
3680
3681 ath10k_htt_rx_tx_fetch_resp_id_confirm(ar,
3682 resp->tx_fetch_confirm.resp_ids,
3683 num_resp_ids);
3684 }
3685
ath10k_htt_rx_tx_mode_switch_ind(struct ath10k * ar,struct sk_buff * skb)3686 static void ath10k_htt_rx_tx_mode_switch_ind(struct ath10k *ar,
3687 struct sk_buff *skb)
3688 {
3689 const struct htt_resp *resp = (void *)skb->data;
3690 const struct htt_tx_mode_switch_record *record;
3691 struct ieee80211_txq *txq;
3692 struct ath10k_txq *artxq;
3693 size_t len;
3694 size_t num_records;
3695 enum htt_tx_mode_switch_mode mode;
3696 bool enable;
3697 u16 info0;
3698 u16 info1;
3699 u16 threshold;
3700 u16 peer_id;
3701 u8 tid;
3702 int i;
3703
3704 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx tx mode switch ind\n");
3705
3706 len = sizeof(resp->hdr) + sizeof(resp->tx_mode_switch_ind);
3707 if (unlikely(skb->len < len)) {
3708 ath10k_warn(ar, "received corrupted tx_mode_switch_ind event: buffer too short\n");
3709 return;
3710 }
3711
3712 info0 = le16_to_cpu(resp->tx_mode_switch_ind.info0);
3713 info1 = le16_to_cpu(resp->tx_mode_switch_ind.info1);
3714
3715 enable = !!(info0 & HTT_TX_MODE_SWITCH_IND_INFO0_ENABLE);
3716 num_records = MS(info0, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD);
3717 mode = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_MODE);
3718 threshold = MS(info1, HTT_TX_MODE_SWITCH_IND_INFO1_THRESHOLD);
3719
3720 ath10k_dbg(ar, ATH10K_DBG_HTT,
3721 "htt rx tx mode switch ind info0 0x%04x info1 0x%04x enable %d num records %zd mode %d threshold %u\n",
3722 info0, info1, enable, num_records, mode, threshold);
3723
3724 len += sizeof(resp->tx_mode_switch_ind.records[0]) * num_records;
3725
3726 if (unlikely(skb->len < len)) {
3727 ath10k_warn(ar, "received corrupted tx_mode_switch_mode_ind event: too many records\n");
3728 return;
3729 }
3730
3731 switch (mode) {
3732 case HTT_TX_MODE_SWITCH_PUSH:
3733 case HTT_TX_MODE_SWITCH_PUSH_PULL:
3734 break;
3735 default:
3736 ath10k_warn(ar, "received invalid tx_mode_switch_mode_ind mode %d, ignoring\n",
3737 mode);
3738 return;
3739 }
3740
3741 if (!enable)
3742 return;
3743
3744 ar->htt.tx_q_state.enabled = enable;
3745 ar->htt.tx_q_state.mode = mode;
3746 ar->htt.tx_q_state.num_push_allowed = threshold;
3747
3748 rcu_read_lock();
3749
3750 for (i = 0; i < num_records; i++) {
3751 record = &resp->tx_mode_switch_ind.records[i];
3752 info0 = le16_to_cpu(record->info0);
3753 peer_id = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_PEER_ID);
3754 tid = MS(info0, HTT_TX_MODE_SWITCH_RECORD_INFO0_TID);
3755
3756 if (unlikely(peer_id >= ar->htt.tx_q_state.num_peers) ||
3757 unlikely(tid >= ar->htt.tx_q_state.num_tids)) {
3758 ath10k_warn(ar, "received out of range peer_id %u tid %u\n",
3759 peer_id, tid);
3760 continue;
3761 }
3762
3763 spin_lock_bh(&ar->data_lock);
3764 txq = ath10k_mac_txq_lookup(ar, peer_id, tid);
3765 spin_unlock_bh(&ar->data_lock);
3766
3767 /* It is okay to release the lock and use txq because RCU read
3768 * lock is held.
3769 */
3770
3771 if (unlikely(!txq)) {
3772 ath10k_warn(ar, "failed to lookup txq for peer_id %u tid %u\n",
3773 peer_id, tid);
3774 continue;
3775 }
3776
3777 spin_lock_bh(&ar->htt.tx_lock);
3778 artxq = (void *)txq->drv_priv;
3779 artxq->num_push_allowed = le16_to_cpu(record->num_max_msdus);
3780 spin_unlock_bh(&ar->htt.tx_lock);
3781 }
3782
3783 rcu_read_unlock();
3784
3785 ath10k_mac_tx_push_pending(ar);
3786 }
3787
ath10k_htt_htc_t2h_msg_handler(struct ath10k * ar,struct sk_buff * skb)3788 void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
3789 {
3790 bool release;
3791
3792 release = ath10k_htt_t2h_msg_handler(ar, skb);
3793
3794 /* Free the indication buffer */
3795 if (release)
3796 dev_kfree_skb_any(skb);
3797 }
3798
ath10k_get_legacy_rate_idx(struct ath10k * ar,u8 rate)3799 static inline s8 ath10k_get_legacy_rate_idx(struct ath10k *ar, u8 rate)
3800 {
3801 static const u8 legacy_rates[] = {1, 2, 5, 11, 6, 9, 12,
3802 18, 24, 36, 48, 54};
3803 int i;
3804
3805 for (i = 0; i < ARRAY_SIZE(legacy_rates); i++) {
3806 if (rate == legacy_rates[i])
3807 return i;
3808 }
3809
3810 ath10k_warn(ar, "Invalid legacy rate %d peer stats", rate);
3811 return -EINVAL;
3812 }
3813
3814 static void
ath10k_accumulate_per_peer_tx_stats(struct ath10k * ar,struct ath10k_sta * arsta,struct ath10k_per_peer_tx_stats * pstats,s8 legacy_rate_idx)3815 ath10k_accumulate_per_peer_tx_stats(struct ath10k *ar,
3816 struct ath10k_sta *arsta,
3817 struct ath10k_per_peer_tx_stats *pstats,
3818 s8 legacy_rate_idx)
3819 {
3820 struct rate_info *txrate = &arsta->txrate;
3821 struct ath10k_htt_tx_stats *tx_stats;
3822 int idx, ht_idx, gi, mcs, bw, nss;
3823 unsigned long flags;
3824
3825 if (!arsta->tx_stats)
3826 return;
3827
3828 tx_stats = arsta->tx_stats;
3829 flags = txrate->flags;
3830 gi = test_bit(ATH10K_RATE_INFO_FLAGS_SGI_BIT, &flags);
3831 mcs = ATH10K_HW_MCS_RATE(pstats->ratecode);
3832 bw = txrate->bw;
3833 nss = txrate->nss;
3834 ht_idx = mcs + (nss - 1) * 8;
3835 idx = mcs * 8 + 8 * 10 * (nss - 1);
3836 idx += bw * 2 + gi;
3837
3838 #define STATS_OP_FMT(name) tx_stats->stats[ATH10K_STATS_TYPE_##name]
3839
3840 if (txrate->flags & RATE_INFO_FLAGS_VHT_MCS) {
3841 STATS_OP_FMT(SUCC).vht[0][mcs] += pstats->succ_bytes;
3842 STATS_OP_FMT(SUCC).vht[1][mcs] += pstats->succ_pkts;
3843 STATS_OP_FMT(FAIL).vht[0][mcs] += pstats->failed_bytes;
3844 STATS_OP_FMT(FAIL).vht[1][mcs] += pstats->failed_pkts;
3845 STATS_OP_FMT(RETRY).vht[0][mcs] += pstats->retry_bytes;
3846 STATS_OP_FMT(RETRY).vht[1][mcs] += pstats->retry_pkts;
3847 } else if (txrate->flags & RATE_INFO_FLAGS_MCS) {
3848 STATS_OP_FMT(SUCC).ht[0][ht_idx] += pstats->succ_bytes;
3849 STATS_OP_FMT(SUCC).ht[1][ht_idx] += pstats->succ_pkts;
3850 STATS_OP_FMT(FAIL).ht[0][ht_idx] += pstats->failed_bytes;
3851 STATS_OP_FMT(FAIL).ht[1][ht_idx] += pstats->failed_pkts;
3852 STATS_OP_FMT(RETRY).ht[0][ht_idx] += pstats->retry_bytes;
3853 STATS_OP_FMT(RETRY).ht[1][ht_idx] += pstats->retry_pkts;
3854 } else {
3855 mcs = legacy_rate_idx;
3856
3857 STATS_OP_FMT(SUCC).legacy[0][mcs] += pstats->succ_bytes;
3858 STATS_OP_FMT(SUCC).legacy[1][mcs] += pstats->succ_pkts;
3859 STATS_OP_FMT(FAIL).legacy[0][mcs] += pstats->failed_bytes;
3860 STATS_OP_FMT(FAIL).legacy[1][mcs] += pstats->failed_pkts;
3861 STATS_OP_FMT(RETRY).legacy[0][mcs] += pstats->retry_bytes;
3862 STATS_OP_FMT(RETRY).legacy[1][mcs] += pstats->retry_pkts;
3863 }
3864
3865 if (ATH10K_HW_AMPDU(pstats->flags)) {
3866 tx_stats->ba_fails += ATH10K_HW_BA_FAIL(pstats->flags);
3867
3868 if (txrate->flags & RATE_INFO_FLAGS_MCS) {
3869 STATS_OP_FMT(AMPDU).ht[0][ht_idx] +=
3870 pstats->succ_bytes + pstats->retry_bytes;
3871 STATS_OP_FMT(AMPDU).ht[1][ht_idx] +=
3872 pstats->succ_pkts + pstats->retry_pkts;
3873 } else {
3874 STATS_OP_FMT(AMPDU).vht[0][mcs] +=
3875 pstats->succ_bytes + pstats->retry_bytes;
3876 STATS_OP_FMT(AMPDU).vht[1][mcs] +=
3877 pstats->succ_pkts + pstats->retry_pkts;
3878 }
3879 STATS_OP_FMT(AMPDU).bw[0][bw] +=
3880 pstats->succ_bytes + pstats->retry_bytes;
3881 STATS_OP_FMT(AMPDU).nss[0][nss - 1] +=
3882 pstats->succ_bytes + pstats->retry_bytes;
3883 STATS_OP_FMT(AMPDU).gi[0][gi] +=
3884 pstats->succ_bytes + pstats->retry_bytes;
3885 STATS_OP_FMT(AMPDU).rate_table[0][idx] +=
3886 pstats->succ_bytes + pstats->retry_bytes;
3887 STATS_OP_FMT(AMPDU).bw[1][bw] +=
3888 pstats->succ_pkts + pstats->retry_pkts;
3889 STATS_OP_FMT(AMPDU).nss[1][nss - 1] +=
3890 pstats->succ_pkts + pstats->retry_pkts;
3891 STATS_OP_FMT(AMPDU).gi[1][gi] +=
3892 pstats->succ_pkts + pstats->retry_pkts;
3893 STATS_OP_FMT(AMPDU).rate_table[1][idx] +=
3894 pstats->succ_pkts + pstats->retry_pkts;
3895 } else {
3896 tx_stats->ack_fails +=
3897 ATH10K_HW_BA_FAIL(pstats->flags);
3898 }
3899
3900 STATS_OP_FMT(SUCC).bw[0][bw] += pstats->succ_bytes;
3901 STATS_OP_FMT(SUCC).nss[0][nss - 1] += pstats->succ_bytes;
3902 STATS_OP_FMT(SUCC).gi[0][gi] += pstats->succ_bytes;
3903
3904 STATS_OP_FMT(SUCC).bw[1][bw] += pstats->succ_pkts;
3905 STATS_OP_FMT(SUCC).nss[1][nss - 1] += pstats->succ_pkts;
3906 STATS_OP_FMT(SUCC).gi[1][gi] += pstats->succ_pkts;
3907
3908 STATS_OP_FMT(FAIL).bw[0][bw] += pstats->failed_bytes;
3909 STATS_OP_FMT(FAIL).nss[0][nss - 1] += pstats->failed_bytes;
3910 STATS_OP_FMT(FAIL).gi[0][gi] += pstats->failed_bytes;
3911
3912 STATS_OP_FMT(FAIL).bw[1][bw] += pstats->failed_pkts;
3913 STATS_OP_FMT(FAIL).nss[1][nss - 1] += pstats->failed_pkts;
3914 STATS_OP_FMT(FAIL).gi[1][gi] += pstats->failed_pkts;
3915
3916 STATS_OP_FMT(RETRY).bw[0][bw] += pstats->retry_bytes;
3917 STATS_OP_FMT(RETRY).nss[0][nss - 1] += pstats->retry_bytes;
3918 STATS_OP_FMT(RETRY).gi[0][gi] += pstats->retry_bytes;
3919
3920 STATS_OP_FMT(RETRY).bw[1][bw] += pstats->retry_pkts;
3921 STATS_OP_FMT(RETRY).nss[1][nss - 1] += pstats->retry_pkts;
3922 STATS_OP_FMT(RETRY).gi[1][gi] += pstats->retry_pkts;
3923
3924 if (txrate->flags >= RATE_INFO_FLAGS_MCS) {
3925 STATS_OP_FMT(SUCC).rate_table[0][idx] += pstats->succ_bytes;
3926 STATS_OP_FMT(SUCC).rate_table[1][idx] += pstats->succ_pkts;
3927 STATS_OP_FMT(FAIL).rate_table[0][idx] += pstats->failed_bytes;
3928 STATS_OP_FMT(FAIL).rate_table[1][idx] += pstats->failed_pkts;
3929 STATS_OP_FMT(RETRY).rate_table[0][idx] += pstats->retry_bytes;
3930 STATS_OP_FMT(RETRY).rate_table[1][idx] += pstats->retry_pkts;
3931 }
3932
3933 tx_stats->tx_duration += pstats->duration;
3934 }
3935
3936 static void
ath10k_update_per_peer_tx_stats(struct ath10k * ar,struct ieee80211_sta * sta,struct ath10k_per_peer_tx_stats * peer_stats)3937 ath10k_update_per_peer_tx_stats(struct ath10k *ar,
3938 struct ieee80211_sta *sta,
3939 struct ath10k_per_peer_tx_stats *peer_stats)
3940 {
3941 struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
3942 struct ieee80211_chanctx_conf *conf = NULL;
3943 u8 rate = 0, sgi;
3944 s8 rate_idx = 0;
3945 bool skip_auto_rate;
3946 struct rate_info txrate;
3947
3948 lockdep_assert_held(&ar->data_lock);
3949
3950 txrate.flags = ATH10K_HW_PREAMBLE(peer_stats->ratecode);
3951 txrate.bw = ATH10K_HW_BW(peer_stats->flags);
3952 txrate.nss = ATH10K_HW_NSS(peer_stats->ratecode);
3953 txrate.mcs = ATH10K_HW_MCS_RATE(peer_stats->ratecode);
3954 sgi = ATH10K_HW_GI(peer_stats->flags);
3955 skip_auto_rate = ATH10K_FW_SKIPPED_RATE_CTRL(peer_stats->flags);
3956
3957 /* Firmware's rate control skips broadcast/management frames,
3958 * if host has configure fixed rates and in some other special cases.
3959 */
3960 if (skip_auto_rate)
3961 return;
3962
3963 if (txrate.flags == WMI_RATE_PREAMBLE_VHT && txrate.mcs > 9) {
3964 ath10k_warn(ar, "Invalid VHT mcs %d peer stats", txrate.mcs);
3965 return;
3966 }
3967
3968 if (txrate.flags == WMI_RATE_PREAMBLE_HT &&
3969 (txrate.mcs > 7 || txrate.nss < 1)) {
3970 ath10k_warn(ar, "Invalid HT mcs %d nss %d peer stats",
3971 txrate.mcs, txrate.nss);
3972 return;
3973 }
3974
3975 memset(&arsta->txrate, 0, sizeof(arsta->txrate));
3976 memset(&arsta->tx_info.status, 0, sizeof(arsta->tx_info.status));
3977 if (txrate.flags == WMI_RATE_PREAMBLE_CCK ||
3978 txrate.flags == WMI_RATE_PREAMBLE_OFDM) {
3979 rate = ATH10K_HW_LEGACY_RATE(peer_stats->ratecode);
3980 /* This is hacky, FW sends CCK rate 5.5Mbps as 6 */
3981 if (rate == 6 && txrate.flags == WMI_RATE_PREAMBLE_CCK)
3982 rate = 5;
3983 rate_idx = ath10k_get_legacy_rate_idx(ar, rate);
3984 if (rate_idx < 0)
3985 return;
3986 arsta->txrate.legacy = rate;
3987 } else if (txrate.flags == WMI_RATE_PREAMBLE_HT) {
3988 arsta->txrate.flags = RATE_INFO_FLAGS_MCS;
3989 arsta->txrate.mcs = txrate.mcs + 8 * (txrate.nss - 1);
3990 } else {
3991 arsta->txrate.flags = RATE_INFO_FLAGS_VHT_MCS;
3992 arsta->txrate.mcs = txrate.mcs;
3993 }
3994
3995 switch (txrate.flags) {
3996 case WMI_RATE_PREAMBLE_OFDM:
3997 if (arsta->arvif && arsta->arvif->vif)
3998 conf = rcu_dereference(arsta->arvif->vif->bss_conf.chanctx_conf);
3999 if (conf && conf->def.chan->band == NL80211_BAND_5GHZ)
4000 arsta->tx_info.status.rates[0].idx = rate_idx - 4;
4001 break;
4002 case WMI_RATE_PREAMBLE_CCK:
4003 arsta->tx_info.status.rates[0].idx = rate_idx;
4004 if (sgi)
4005 arsta->tx_info.status.rates[0].flags |=
4006 (IEEE80211_TX_RC_USE_SHORT_PREAMBLE |
4007 IEEE80211_TX_RC_SHORT_GI);
4008 break;
4009 case WMI_RATE_PREAMBLE_HT:
4010 arsta->tx_info.status.rates[0].idx =
4011 txrate.mcs + ((txrate.nss - 1) * 8);
4012 if (sgi)
4013 arsta->tx_info.status.rates[0].flags |=
4014 IEEE80211_TX_RC_SHORT_GI;
4015 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_MCS;
4016 break;
4017 case WMI_RATE_PREAMBLE_VHT:
4018 ieee80211_rate_set_vht(&arsta->tx_info.status.rates[0],
4019 txrate.mcs, txrate.nss);
4020 if (sgi)
4021 arsta->tx_info.status.rates[0].flags |=
4022 IEEE80211_TX_RC_SHORT_GI;
4023 arsta->tx_info.status.rates[0].flags |= IEEE80211_TX_RC_VHT_MCS;
4024 break;
4025 }
4026
4027 arsta->txrate.nss = txrate.nss;
4028 arsta->txrate.bw = ath10k_bw_to_mac80211_bw(txrate.bw);
4029 arsta->last_tx_bitrate = cfg80211_calculate_bitrate(&arsta->txrate);
4030 if (sgi)
4031 arsta->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
4032
4033 switch (arsta->txrate.bw) {
4034 case RATE_INFO_BW_40:
4035 arsta->tx_info.status.rates[0].flags |=
4036 IEEE80211_TX_RC_40_MHZ_WIDTH;
4037 break;
4038 case RATE_INFO_BW_80:
4039 arsta->tx_info.status.rates[0].flags |=
4040 IEEE80211_TX_RC_80_MHZ_WIDTH;
4041 break;
4042 case RATE_INFO_BW_160:
4043 arsta->tx_info.status.rates[0].flags |=
4044 IEEE80211_TX_RC_160_MHZ_WIDTH;
4045 break;
4046 }
4047
4048 if (peer_stats->succ_pkts) {
4049 arsta->tx_info.flags = IEEE80211_TX_STAT_ACK;
4050 arsta->tx_info.status.rates[0].count = 1;
4051 ieee80211_tx_rate_update(ar->hw, sta, &arsta->tx_info);
4052 }
4053
4054 if (ar->htt.disable_tx_comp) {
4055 arsta->tx_failed += peer_stats->failed_pkts;
4056 ath10k_dbg(ar, ATH10K_DBG_HTT, "tx failed %d\n",
4057 arsta->tx_failed);
4058 }
4059
4060 arsta->tx_retries += peer_stats->retry_pkts;
4061 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt tx retries %d", arsta->tx_retries);
4062
4063 if (ath10k_debug_is_extd_tx_stats_enabled(ar))
4064 ath10k_accumulate_per_peer_tx_stats(ar, arsta, peer_stats,
4065 rate_idx);
4066 }
4067
ath10k_htt_fetch_peer_stats(struct ath10k * ar,struct sk_buff * skb)4068 static void ath10k_htt_fetch_peer_stats(struct ath10k *ar,
4069 struct sk_buff *skb)
4070 {
4071 struct htt_resp *resp = (struct htt_resp *)skb->data;
4072 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats;
4073 struct htt_per_peer_tx_stats_ind *tx_stats;
4074 struct ieee80211_sta *sta;
4075 struct ath10k_peer *peer;
4076 int peer_id, i;
4077 u8 ppdu_len, num_ppdu;
4078
4079 num_ppdu = resp->peer_tx_stats.num_ppdu;
4080 ppdu_len = resp->peer_tx_stats.ppdu_len * sizeof(__le32);
4081
4082 if (skb->len < sizeof(struct htt_resp_hdr) + num_ppdu * ppdu_len) {
4083 ath10k_warn(ar, "Invalid peer stats buf length %d\n", skb->len);
4084 return;
4085 }
4086
4087 tx_stats = (struct htt_per_peer_tx_stats_ind *)
4088 (resp->peer_tx_stats.payload);
4089 peer_id = __le16_to_cpu(tx_stats->peer_id);
4090
4091 rcu_read_lock();
4092 spin_lock_bh(&ar->data_lock);
4093 peer = ath10k_peer_find_by_id(ar, peer_id);
4094 if (!peer || !peer->sta) {
4095 ath10k_warn(ar, "Invalid peer id %d peer stats buffer\n",
4096 peer_id);
4097 goto out;
4098 }
4099
4100 sta = peer->sta;
4101 for (i = 0; i < num_ppdu; i++) {
4102 tx_stats = (struct htt_per_peer_tx_stats_ind *)
4103 (resp->peer_tx_stats.payload + i * ppdu_len);
4104
4105 p_tx_stats->succ_bytes = __le32_to_cpu(tx_stats->succ_bytes);
4106 p_tx_stats->retry_bytes = __le32_to_cpu(tx_stats->retry_bytes);
4107 p_tx_stats->failed_bytes =
4108 __le32_to_cpu(tx_stats->failed_bytes);
4109 p_tx_stats->ratecode = tx_stats->ratecode;
4110 p_tx_stats->flags = tx_stats->flags;
4111 p_tx_stats->succ_pkts = __le16_to_cpu(tx_stats->succ_pkts);
4112 p_tx_stats->retry_pkts = __le16_to_cpu(tx_stats->retry_pkts);
4113 p_tx_stats->failed_pkts = __le16_to_cpu(tx_stats->failed_pkts);
4114 p_tx_stats->duration = __le16_to_cpu(tx_stats->tx_duration);
4115
4116 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats);
4117 }
4118
4119 out:
4120 spin_unlock_bh(&ar->data_lock);
4121 rcu_read_unlock();
4122 }
4123
ath10k_fetch_10_2_tx_stats(struct ath10k * ar,u8 * data)4124 static void ath10k_fetch_10_2_tx_stats(struct ath10k *ar, u8 *data)
4125 {
4126 struct ath10k_pktlog_hdr *hdr = (struct ath10k_pktlog_hdr *)data;
4127 struct ath10k_per_peer_tx_stats *p_tx_stats = &ar->peer_tx_stats;
4128 struct ath10k_10_2_peer_tx_stats *tx_stats;
4129 struct ieee80211_sta *sta;
4130 struct ath10k_peer *peer;
4131 u16 log_type = __le16_to_cpu(hdr->log_type);
4132 u32 peer_id = 0, i;
4133
4134 if (log_type != ATH_PKTLOG_TYPE_TX_STAT)
4135 return;
4136
4137 tx_stats = (struct ath10k_10_2_peer_tx_stats *)((hdr->payload) +
4138 ATH10K_10_2_TX_STATS_OFFSET);
4139
4140 if (!tx_stats->tx_ppdu_cnt)
4141 return;
4142
4143 peer_id = tx_stats->peer_id;
4144
4145 rcu_read_lock();
4146 spin_lock_bh(&ar->data_lock);
4147 peer = ath10k_peer_find_by_id(ar, peer_id);
4148 if (!peer || !peer->sta) {
4149 ath10k_warn(ar, "Invalid peer id %d in peer stats buffer\n",
4150 peer_id);
4151 goto out;
4152 }
4153
4154 sta = peer->sta;
4155 for (i = 0; i < tx_stats->tx_ppdu_cnt; i++) {
4156 p_tx_stats->succ_bytes =
4157 __le16_to_cpu(tx_stats->success_bytes[i]);
4158 p_tx_stats->retry_bytes =
4159 __le16_to_cpu(tx_stats->retry_bytes[i]);
4160 p_tx_stats->failed_bytes =
4161 __le16_to_cpu(tx_stats->failed_bytes[i]);
4162 p_tx_stats->ratecode = tx_stats->ratecode[i];
4163 p_tx_stats->flags = tx_stats->flags[i];
4164 p_tx_stats->succ_pkts = tx_stats->success_pkts[i];
4165 p_tx_stats->retry_pkts = tx_stats->retry_pkts[i];
4166 p_tx_stats->failed_pkts = tx_stats->failed_pkts[i];
4167
4168 ath10k_update_per_peer_tx_stats(ar, sta, p_tx_stats);
4169 }
4170 spin_unlock_bh(&ar->data_lock);
4171 rcu_read_unlock();
4172
4173 return;
4174
4175 out:
4176 spin_unlock_bh(&ar->data_lock);
4177 rcu_read_unlock();
4178 }
4179
ath10k_htt_rx_pn_len(enum htt_security_types sec_type)4180 static int ath10k_htt_rx_pn_len(enum htt_security_types sec_type)
4181 {
4182 switch (sec_type) {
4183 case HTT_SECURITY_TKIP:
4184 case HTT_SECURITY_TKIP_NOMIC:
4185 case HTT_SECURITY_AES_CCMP:
4186 return 48;
4187 default:
4188 return 0;
4189 }
4190 }
4191
ath10k_htt_rx_sec_ind_handler(struct ath10k * ar,struct htt_security_indication * ev)4192 static void ath10k_htt_rx_sec_ind_handler(struct ath10k *ar,
4193 struct htt_security_indication *ev)
4194 {
4195 enum htt_txrx_sec_cast_type sec_index;
4196 enum htt_security_types sec_type;
4197 struct ath10k_peer *peer;
4198
4199 spin_lock_bh(&ar->data_lock);
4200
4201 peer = ath10k_peer_find_by_id(ar, __le16_to_cpu(ev->peer_id));
4202 if (!peer) {
4203 ath10k_warn(ar, "failed to find peer id %d for security indication",
4204 __le16_to_cpu(ev->peer_id));
4205 goto out;
4206 }
4207
4208 sec_type = MS(ev->flags, HTT_SECURITY_TYPE);
4209
4210 if (ev->flags & HTT_SECURITY_IS_UNICAST)
4211 sec_index = HTT_TXRX_SEC_UCAST;
4212 else
4213 sec_index = HTT_TXRX_SEC_MCAST;
4214
4215 peer->rx_pn[sec_index].sec_type = sec_type;
4216 peer->rx_pn[sec_index].pn_len = ath10k_htt_rx_pn_len(sec_type);
4217
4218 memset(peer->tids_last_pn_valid, 0, sizeof(peer->tids_last_pn_valid));
4219 memset(peer->tids_last_pn, 0, sizeof(peer->tids_last_pn));
4220
4221 out:
4222 spin_unlock_bh(&ar->data_lock);
4223 }
4224
ath10k_htt_t2h_msg_handler(struct ath10k * ar,struct sk_buff * skb)4225 bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
4226 {
4227 struct ath10k_htt *htt = &ar->htt;
4228 struct htt_resp *resp = (struct htt_resp *)skb->data;
4229 enum htt_t2h_msg_type type;
4230
4231 /* confirm alignment */
4232 if (!IS_ALIGNED((unsigned long)skb->data, 4))
4233 ath10k_warn(ar, "unaligned htt message, expect trouble\n");
4234
4235 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, msg_type: 0x%0X\n",
4236 resp->hdr.msg_type);
4237
4238 if (resp->hdr.msg_type >= ar->htt.t2h_msg_types_max) {
4239 ath10k_dbg(ar, ATH10K_DBG_HTT, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X",
4240 resp->hdr.msg_type, ar->htt.t2h_msg_types_max);
4241 return true;
4242 }
4243 type = ar->htt.t2h_msg_types[resp->hdr.msg_type];
4244
4245 switch (type) {
4246 case HTT_T2H_MSG_TYPE_VERSION_CONF: {
4247 htt->target_version_major = resp->ver_resp.major;
4248 htt->target_version_minor = resp->ver_resp.minor;
4249 complete(&htt->target_version_received);
4250 break;
4251 }
4252 case HTT_T2H_MSG_TYPE_RX_IND:
4253 if (ar->bus_param.dev_type != ATH10K_DEV_TYPE_HL) {
4254 ath10k_htt_rx_proc_rx_ind_ll(htt, &resp->rx_ind);
4255 } else {
4256 skb_queue_tail(&htt->rx_indication_head, skb);
4257 return false;
4258 }
4259 break;
4260 case HTT_T2H_MSG_TYPE_PEER_MAP: {
4261 struct htt_peer_map_event ev = {
4262 .vdev_id = resp->peer_map.vdev_id,
4263 .peer_id = __le16_to_cpu(resp->peer_map.peer_id),
4264 };
4265 memcpy(ev.addr, resp->peer_map.addr, sizeof(ev.addr));
4266 ath10k_peer_map_event(htt, &ev);
4267 break;
4268 }
4269 case HTT_T2H_MSG_TYPE_PEER_UNMAP: {
4270 struct htt_peer_unmap_event ev = {
4271 .peer_id = __le16_to_cpu(resp->peer_unmap.peer_id),
4272 };
4273 ath10k_peer_unmap_event(htt, &ev);
4274 break;
4275 }
4276 case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION: {
4277 struct htt_tx_done tx_done = {};
4278 struct ath10k_htt *htt = &ar->htt;
4279 struct ath10k_htc *htc = &ar->htc;
4280 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid];
4281 int status = __le32_to_cpu(resp->mgmt_tx_completion.status);
4282 int info = __le32_to_cpu(resp->mgmt_tx_completion.info);
4283
4284 tx_done.msdu_id = __le32_to_cpu(resp->mgmt_tx_completion.desc_id);
4285
4286 switch (status) {
4287 case HTT_MGMT_TX_STATUS_OK:
4288 tx_done.status = HTT_TX_COMPL_STATE_ACK;
4289 if (test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS,
4290 ar->wmi.svc_map) &&
4291 (resp->mgmt_tx_completion.flags &
4292 HTT_MGMT_TX_CMPL_FLAG_ACK_RSSI)) {
4293 tx_done.ack_rssi =
4294 FIELD_GET(HTT_MGMT_TX_CMPL_INFO_ACK_RSSI_MASK,
4295 info);
4296 }
4297 break;
4298 case HTT_MGMT_TX_STATUS_RETRY:
4299 tx_done.status = HTT_TX_COMPL_STATE_NOACK;
4300 break;
4301 case HTT_MGMT_TX_STATUS_DROP:
4302 tx_done.status = HTT_TX_COMPL_STATE_DISCARD;
4303 break;
4304 }
4305
4306 if (htt->disable_tx_comp) {
4307 spin_lock_bh(&htc->tx_lock);
4308 ep->tx_credits++;
4309 spin_unlock_bh(&htc->tx_lock);
4310 }
4311
4312 status = ath10k_txrx_tx_unref(htt, &tx_done);
4313 if (!status) {
4314 spin_lock_bh(&htt->tx_lock);
4315 ath10k_htt_tx_mgmt_dec_pending(htt);
4316 spin_unlock_bh(&htt->tx_lock);
4317 }
4318 break;
4319 }
4320 case HTT_T2H_MSG_TYPE_TX_COMPL_IND:
4321 ath10k_htt_rx_tx_compl_ind(htt->ar, skb);
4322 break;
4323 case HTT_T2H_MSG_TYPE_SEC_IND: {
4324 struct ath10k *ar = htt->ar;
4325 struct htt_security_indication *ev = &resp->security_indication;
4326
4327 ath10k_htt_rx_sec_ind_handler(ar, ev);
4328 ath10k_dbg(ar, ATH10K_DBG_HTT,
4329 "sec ind peer_id %d unicast %d type %d\n",
4330 __le16_to_cpu(ev->peer_id),
4331 !!(ev->flags & HTT_SECURITY_IS_UNICAST),
4332 MS(ev->flags, HTT_SECURITY_TYPE));
4333 complete(&ar->install_key_done);
4334 break;
4335 }
4336 case HTT_T2H_MSG_TYPE_RX_FRAG_IND: {
4337 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
4338 skb->data, skb->len);
4339 atomic_inc(&htt->num_mpdus_ready);
4340
4341 return ath10k_htt_rx_proc_rx_frag_ind(htt,
4342 &resp->rx_frag_ind,
4343 skb);
4344 }
4345 case HTT_T2H_MSG_TYPE_TEST:
4346 break;
4347 case HTT_T2H_MSG_TYPE_STATS_CONF:
4348 trace_ath10k_htt_stats(ar, skb->data, skb->len);
4349 break;
4350 case HTT_T2H_MSG_TYPE_TX_INSPECT_IND:
4351 /* Firmware can return tx frames if it's unable to fully
4352 * process them and suspects host may be able to fix it. ath10k
4353 * sends all tx frames as already inspected so this shouldn't
4354 * happen unless fw has a bug.
4355 */
4356 ath10k_warn(ar, "received an unexpected htt tx inspect event\n");
4357 break;
4358 case HTT_T2H_MSG_TYPE_RX_ADDBA:
4359 ath10k_htt_rx_addba(ar, resp);
4360 break;
4361 case HTT_T2H_MSG_TYPE_RX_DELBA:
4362 ath10k_htt_rx_delba(ar, resp);
4363 break;
4364 case HTT_T2H_MSG_TYPE_PKTLOG: {
4365 trace_ath10k_htt_pktlog(ar, resp->pktlog_msg.payload,
4366 skb->len -
4367 offsetof(struct htt_resp,
4368 pktlog_msg.payload));
4369
4370 if (ath10k_peer_stats_enabled(ar))
4371 ath10k_fetch_10_2_tx_stats(ar,
4372 resp->pktlog_msg.payload);
4373 break;
4374 }
4375 case HTT_T2H_MSG_TYPE_RX_FLUSH: {
4376 /* Ignore this event because mac80211 takes care of Rx
4377 * aggregation reordering.
4378 */
4379 break;
4380 }
4381 case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND: {
4382 skb_queue_tail(&htt->rx_in_ord_compl_q, skb);
4383 return false;
4384 }
4385 case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND: {
4386 struct ath10k_htt *htt = &ar->htt;
4387 struct ath10k_htc *htc = &ar->htc;
4388 struct ath10k_htc_ep *ep = &ar->htc.endpoint[htt->eid];
4389 u32 msg_word = __le32_to_cpu(*(__le32 *)resp);
4390 int htt_credit_delta;
4391
4392 htt_credit_delta = HTT_TX_CREDIT_DELTA_ABS_GET(msg_word);
4393 if (HTT_TX_CREDIT_SIGN_BIT_GET(msg_word))
4394 htt_credit_delta = -htt_credit_delta;
4395
4396 ath10k_dbg(ar, ATH10K_DBG_HTT,
4397 "htt credit update delta %d\n",
4398 htt_credit_delta);
4399
4400 if (htt->disable_tx_comp) {
4401 spin_lock_bh(&htc->tx_lock);
4402 ep->tx_credits += htt_credit_delta;
4403 spin_unlock_bh(&htc->tx_lock);
4404 ath10k_dbg(ar, ATH10K_DBG_HTT,
4405 "htt credit total %d\n",
4406 ep->tx_credits);
4407 ep->ep_ops.ep_tx_credits(htc->ar);
4408 }
4409 break;
4410 }
4411 case HTT_T2H_MSG_TYPE_CHAN_CHANGE: {
4412 u32 phymode = __le32_to_cpu(resp->chan_change.phymode);
4413 u32 freq = __le32_to_cpu(resp->chan_change.freq);
4414
4415 ar->tgt_oper_chan = ieee80211_get_channel(ar->hw->wiphy, freq);
4416 ath10k_dbg(ar, ATH10K_DBG_HTT,
4417 "htt chan change freq %u phymode %s\n",
4418 freq, ath10k_wmi_phymode_str(phymode));
4419 break;
4420 }
4421 case HTT_T2H_MSG_TYPE_AGGR_CONF:
4422 break;
4423 case HTT_T2H_MSG_TYPE_TX_FETCH_IND: {
4424 struct sk_buff *tx_fetch_ind = skb_copy(skb, GFP_ATOMIC);
4425
4426 if (!tx_fetch_ind) {
4427 ath10k_warn(ar, "failed to copy htt tx fetch ind\n");
4428 break;
4429 }
4430 skb_queue_tail(&htt->tx_fetch_ind_q, tx_fetch_ind);
4431 break;
4432 }
4433 case HTT_T2H_MSG_TYPE_TX_FETCH_CONFIRM:
4434 ath10k_htt_rx_tx_fetch_confirm(ar, skb);
4435 break;
4436 case HTT_T2H_MSG_TYPE_TX_MODE_SWITCH_IND:
4437 ath10k_htt_rx_tx_mode_switch_ind(ar, skb);
4438 break;
4439 case HTT_T2H_MSG_TYPE_PEER_STATS:
4440 ath10k_htt_fetch_peer_stats(ar, skb);
4441 break;
4442 case HTT_T2H_MSG_TYPE_EN_STATS:
4443 default:
4444 ath10k_warn(ar, "htt event (%d) not handled\n",
4445 resp->hdr.msg_type);
4446 ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt event: ",
4447 skb->data, skb->len);
4448 break;
4449 }
4450 return true;
4451 }
4452 EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler);
4453
ath10k_htt_rx_pktlog_completion_handler(struct ath10k * ar,struct sk_buff * skb)4454 void ath10k_htt_rx_pktlog_completion_handler(struct ath10k *ar,
4455 struct sk_buff *skb)
4456 {
4457 trace_ath10k_htt_pktlog(ar, skb->data, skb->len);
4458 dev_kfree_skb_any(skb);
4459 }
4460 EXPORT_SYMBOL(ath10k_htt_rx_pktlog_completion_handler);
4461
ath10k_htt_rx_deliver_msdu(struct ath10k * ar,int quota,int budget)4462 static int ath10k_htt_rx_deliver_msdu(struct ath10k *ar, int quota, int budget)
4463 {
4464 struct sk_buff *skb;
4465
4466 while (quota < budget) {
4467 if (skb_queue_empty(&ar->htt.rx_msdus_q))
4468 break;
4469
4470 skb = skb_dequeue(&ar->htt.rx_msdus_q);
4471 if (!skb)
4472 break;
4473 ath10k_process_rx(ar, skb);
4474 quota++;
4475 }
4476
4477 return quota;
4478 }
4479
ath10k_htt_rx_hl_indication(struct ath10k * ar,int budget)4480 int ath10k_htt_rx_hl_indication(struct ath10k *ar, int budget)
4481 {
4482 struct htt_resp *resp;
4483 struct ath10k_htt *htt = &ar->htt;
4484 struct sk_buff *skb;
4485 bool release;
4486 int quota;
4487
4488 for (quota = 0; quota < budget; quota++) {
4489 skb = skb_dequeue(&htt->rx_indication_head);
4490 if (!skb)
4491 break;
4492
4493 resp = (struct htt_resp *)skb->data;
4494
4495 release = ath10k_htt_rx_proc_rx_ind_hl(htt,
4496 &resp->rx_ind_hl,
4497 skb,
4498 HTT_RX_PN_CHECK,
4499 HTT_RX_NON_TKIP_MIC);
4500
4501 if (release)
4502 dev_kfree_skb_any(skb);
4503
4504 ath10k_dbg(ar, ATH10K_DBG_HTT, "rx indication poll pending count:%d\n",
4505 skb_queue_len(&htt->rx_indication_head));
4506 }
4507 return quota;
4508 }
4509 EXPORT_SYMBOL(ath10k_htt_rx_hl_indication);
4510
ath10k_htt_txrx_compl_task(struct ath10k * ar,int budget)4511 int ath10k_htt_txrx_compl_task(struct ath10k *ar, int budget)
4512 {
4513 struct ath10k_htt *htt = &ar->htt;
4514 struct htt_tx_done tx_done = {};
4515 struct sk_buff_head tx_ind_q;
4516 struct sk_buff *skb;
4517 unsigned long flags;
4518 int quota = 0, done, ret;
4519 bool resched_napi = false;
4520
4521 __skb_queue_head_init(&tx_ind_q);
4522
4523 /* Process pending frames before dequeuing more data
4524 * from hardware.
4525 */
4526 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget);
4527 if (quota == budget) {
4528 resched_napi = true;
4529 goto exit;
4530 }
4531
4532 while ((skb = skb_dequeue(&htt->rx_in_ord_compl_q))) {
4533 spin_lock_bh(&htt->rx_ring.lock);
4534 ret = ath10k_htt_rx_in_ord_ind(ar, skb);
4535 spin_unlock_bh(&htt->rx_ring.lock);
4536
4537 dev_kfree_skb_any(skb);
4538 if (ret == -EIO) {
4539 resched_napi = true;
4540 goto exit;
4541 }
4542 }
4543
4544 while (atomic_read(&htt->num_mpdus_ready)) {
4545 ret = ath10k_htt_rx_handle_amsdu(htt);
4546 if (ret == -EIO) {
4547 resched_napi = true;
4548 goto exit;
4549 }
4550 atomic_dec(&htt->num_mpdus_ready);
4551 }
4552
4553 /* Deliver received data after processing data from hardware */
4554 quota = ath10k_htt_rx_deliver_msdu(ar, quota, budget);
4555
4556 /* From NAPI documentation:
4557 * The napi poll() function may also process TX completions, in which
4558 * case if it processes the entire TX ring then it should count that
4559 * work as the rest of the budget.
4560 */
4561 if ((quota < budget) && !kfifo_is_empty(&htt->txdone_fifo))
4562 quota = budget;
4563
4564 /* kfifo_get: called only within txrx_tasklet so it's neatly serialized.
4565 * From kfifo_get() documentation:
4566 * Note that with only one concurrent reader and one concurrent writer,
4567 * you don't need extra locking to use these macro.
4568 */
4569 while (kfifo_get(&htt->txdone_fifo, &tx_done))
4570 ath10k_txrx_tx_unref(htt, &tx_done);
4571
4572 ath10k_mac_tx_push_pending(ar);
4573
4574 spin_lock_irqsave(&htt->tx_fetch_ind_q.lock, flags);
4575 skb_queue_splice_init(&htt->tx_fetch_ind_q, &tx_ind_q);
4576 spin_unlock_irqrestore(&htt->tx_fetch_ind_q.lock, flags);
4577
4578 while ((skb = __skb_dequeue(&tx_ind_q))) {
4579 ath10k_htt_rx_tx_fetch_ind(ar, skb);
4580 dev_kfree_skb_any(skb);
4581 }
4582
4583 exit:
4584 ath10k_htt_rx_msdu_buff_replenish(htt);
4585 /* In case of rx failure or more data to read, report budget
4586 * to reschedule NAPI poll
4587 */
4588 done = resched_napi ? budget : quota;
4589
4590 return done;
4591 }
4592 EXPORT_SYMBOL(ath10k_htt_txrx_compl_task);
4593
4594 static const struct ath10k_htt_rx_ops htt_rx_ops_32 = {
4595 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_32,
4596 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_32,
4597 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_32,
4598 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_32,
4599 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_32,
4600 };
4601
4602 static const struct ath10k_htt_rx_ops htt_rx_ops_64 = {
4603 .htt_get_rx_ring_size = ath10k_htt_get_rx_ring_size_64,
4604 .htt_config_paddrs_ring = ath10k_htt_config_paddrs_ring_64,
4605 .htt_set_paddrs_ring = ath10k_htt_set_paddrs_ring_64,
4606 .htt_get_vaddr_ring = ath10k_htt_get_vaddr_ring_64,
4607 .htt_reset_paddrs_ring = ath10k_htt_reset_paddrs_ring_64,
4608 };
4609
4610 static const struct ath10k_htt_rx_ops htt_rx_ops_hl = {
4611 .htt_rx_proc_rx_frag_ind = ath10k_htt_rx_proc_rx_frag_ind_hl,
4612 };
4613
ath10k_htt_set_rx_ops(struct ath10k_htt * htt)4614 void ath10k_htt_set_rx_ops(struct ath10k_htt *htt)
4615 {
4616 struct ath10k *ar = htt->ar;
4617
4618 if (ar->bus_param.dev_type == ATH10K_DEV_TYPE_HL)
4619 htt->rx_ops = &htt_rx_ops_hl;
4620 else if (ar->hw_params.target_64bit)
4621 htt->rx_ops = &htt_rx_ops_64;
4622 else
4623 htt->rx_ops = &htt_rx_ops_32;
4624 }
4625