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