1 // SPDX-License-Identifier: BSD-3-Clause-Clear
2 /*
3 * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
4 * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
5 */
6
7 #include "dp_rx.h"
8 #include "../dp_peer.h"
9 #include "../dp_tx.h"
10 #include "../peer.h"
11 #include "hal_qcn9274.h"
12 #include "hal_wcn7850.h"
13 #include "hal_qcc2072.h"
14
ath12k_wifi7_dp_rx_get_peer_id(struct ath12k_dp * dp,enum ath12k_peer_metadata_version ver,__le32 peer_metadata)15 static u16 ath12k_wifi7_dp_rx_get_peer_id(struct ath12k_dp *dp,
16 enum ath12k_peer_metadata_version ver,
17 __le32 peer_metadata)
18 {
19 switch (ver) {
20 default:
21 ath12k_warn(dp->ab, "Unknown peer metadata version: %d", ver);
22 fallthrough;
23 case ATH12K_PEER_METADATA_V0:
24 return le32_get_bits(peer_metadata,
25 RX_MPDU_DESC_META_DATA_V0_PEER_ID);
26 case ATH12K_PEER_METADATA_V1:
27 return le32_get_bits(peer_metadata,
28 RX_MPDU_DESC_META_DATA_V1_PEER_ID);
29 case ATH12K_PEER_METADATA_V1A:
30 return le32_get_bits(peer_metadata,
31 RX_MPDU_DESC_META_DATA_V1A_PEER_ID);
32 case ATH12K_PEER_METADATA_V1B:
33 return le32_get_bits(peer_metadata,
34 RX_MPDU_DESC_META_DATA_V1B_PEER_ID);
35 }
36 }
37
ath12k_wifi7_peer_rx_tid_qref_setup(struct ath12k_base * ab,u16 peer_id,u16 tid,dma_addr_t paddr)38 void ath12k_wifi7_peer_rx_tid_qref_setup(struct ath12k_base *ab, u16 peer_id, u16 tid,
39 dma_addr_t paddr)
40 {
41 struct ath12k_reo_queue_ref *qref;
42 struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
43 bool ml_peer = false;
44
45 if (!ab->hw_params->reoq_lut_support)
46 return;
47
48 if (peer_id & ATH12K_PEER_ML_ID_VALID) {
49 peer_id &= ~ATH12K_PEER_ML_ID_VALID;
50 ml_peer = true;
51 }
52
53 if (ml_peer)
54 qref = (struct ath12k_reo_queue_ref *)dp->ml_reoq_lut.vaddr +
55 (peer_id * (IEEE80211_NUM_TIDS + 1) + tid);
56 else
57 qref = (struct ath12k_reo_queue_ref *)dp->reoq_lut.vaddr +
58 (peer_id * (IEEE80211_NUM_TIDS + 1) + tid);
59
60 qref->info0 = u32_encode_bits(lower_32_bits(paddr),
61 BUFFER_ADDR_INFO0_ADDR);
62 qref->info1 = u32_encode_bits(upper_32_bits(paddr),
63 BUFFER_ADDR_INFO1_ADDR) |
64 u32_encode_bits(tid, DP_REO_QREF_NUM);
65
66 ath12k_hal_reo_shared_qaddr_cache_clear(ab);
67 }
68
ath12k_wifi7_peer_rx_tid_qref_reset(struct ath12k_base * ab,u16 peer_id,u16 tid)69 void ath12k_wifi7_peer_rx_tid_qref_reset(struct ath12k_base *ab,
70 u16 peer_id, u16 tid)
71 {
72 struct ath12k_reo_queue_ref *qref;
73 struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
74 bool ml_peer = false;
75
76 if (!ab->hw_params->reoq_lut_support)
77 return;
78
79 if (peer_id & ATH12K_PEER_ML_ID_VALID) {
80 peer_id &= ~ATH12K_PEER_ML_ID_VALID;
81 ml_peer = true;
82 }
83
84 if (ml_peer)
85 qref = (struct ath12k_reo_queue_ref *)dp->ml_reoq_lut.vaddr +
86 (peer_id * (IEEE80211_NUM_TIDS + 1) + tid);
87 else
88 qref = (struct ath12k_reo_queue_ref *)dp->reoq_lut.vaddr +
89 (peer_id * (IEEE80211_NUM_TIDS + 1) + tid);
90
91 qref->info0 = u32_encode_bits(0, BUFFER_ADDR_INFO0_ADDR);
92 qref->info1 = u32_encode_bits(0, BUFFER_ADDR_INFO1_ADDR) |
93 u32_encode_bits(tid, DP_REO_QREF_NUM);
94 }
95
ath12k_wifi7_dp_rx_peer_tid_delete(struct ath12k_base * ab,struct ath12k_dp_link_peer * peer,u8 tid)96 void ath12k_wifi7_dp_rx_peer_tid_delete(struct ath12k_base *ab,
97 struct ath12k_dp_link_peer *peer, u8 tid)
98 {
99 struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
100
101 if (!(peer->rx_tid_active_bitmask & (1 << tid)))
102 return;
103
104 ath12k_dp_mark_tid_as_inactive(dp, peer->peer_id, tid);
105 ath12k_dp_rx_process_reo_cmd_update_rx_queue_list(dp);
106 }
107
ath12k_wifi7_dp_rx_link_desc_return(struct ath12k_dp * dp,struct ath12k_buffer_addr * buf_addr_info,enum hal_wbm_rel_bm_act action)108 int ath12k_wifi7_dp_rx_link_desc_return(struct ath12k_dp *dp,
109 struct ath12k_buffer_addr *buf_addr_info,
110 enum hal_wbm_rel_bm_act action)
111 {
112 struct ath12k_base *ab = dp->ab;
113 struct hal_wbm_release_ring *desc;
114 struct hal_srng *srng;
115 int ret = 0;
116
117 srng = &dp->hal->srng_list[dp->wbm_desc_rel_ring.ring_id];
118
119 spin_lock_bh(&srng->lock);
120
121 ath12k_hal_srng_access_begin(ab, srng);
122
123 desc = ath12k_hal_srng_src_get_next_entry(ab, srng);
124 if (!desc) {
125 ret = -ENOBUFS;
126 goto exit;
127 }
128
129 ath12k_wifi7_hal_rx_msdu_link_desc_set(ab, desc, buf_addr_info, action);
130
131 exit:
132 ath12k_hal_srng_access_end(ab, srng);
133
134 spin_unlock_bh(&srng->lock);
135
136 return ret;
137 }
138
ath12k_wifi7_dp_reo_cmd_send(struct ath12k_base * ab,struct ath12k_dp_rx_tid_rxq * rx_tid,enum hal_reo_cmd_type type,struct ath12k_hal_reo_cmd * cmd,void (* cb)(struct ath12k_dp * dp,void * ctx,enum hal_reo_cmd_status status))139 int ath12k_wifi7_dp_reo_cmd_send(struct ath12k_base *ab,
140 struct ath12k_dp_rx_tid_rxq *rx_tid,
141 enum hal_reo_cmd_type type,
142 struct ath12k_hal_reo_cmd *cmd,
143 void (*cb)(struct ath12k_dp *dp, void *ctx,
144 enum hal_reo_cmd_status status))
145 {
146 struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
147 struct ath12k_dp_rx_reo_cmd *dp_cmd;
148 struct hal_srng *cmd_ring;
149 int cmd_num;
150
151 cmd_ring = &ab->hal.srng_list[dp->reo_cmd_ring.ring_id];
152 cmd_num = ath12k_wifi7_hal_reo_cmd_send(ab, cmd_ring, type, cmd);
153
154 /* cmd_num should start from 1, during failure return the error code */
155 if (cmd_num < 0)
156 return cmd_num;
157
158 /* reo cmd ring descriptors has cmd_num starting from 1 */
159 if (cmd_num == 0)
160 return -EINVAL;
161
162 if (!cb)
163 return 0;
164
165 /* Can this be optimized so that we keep the pending command list only
166 * for tid delete command to free up the resource on the command status
167 * indication?
168 */
169 dp_cmd = kzalloc_obj(*dp_cmd, GFP_ATOMIC);
170
171 if (!dp_cmd)
172 return -ENOMEM;
173
174 memcpy(&dp_cmd->data, rx_tid, sizeof(*rx_tid));
175 dp_cmd->cmd_num = cmd_num;
176 dp_cmd->handler = cb;
177
178 spin_lock_bh(&dp->reo_cmd_lock);
179 list_add_tail(&dp_cmd->list, &dp->reo_cmd_list);
180 spin_unlock_bh(&dp->reo_cmd_lock);
181
182 return 0;
183 }
184
ath12k_wifi7_peer_rx_tid_reo_update(struct ath12k_dp * dp,struct ath12k_dp_link_peer * peer,struct ath12k_dp_rx_tid * rx_tid,u32 ba_win_sz,u16 ssn,bool update_ssn)185 int ath12k_wifi7_peer_rx_tid_reo_update(struct ath12k_dp *dp,
186 struct ath12k_dp_link_peer *peer,
187 struct ath12k_dp_rx_tid *rx_tid,
188 u32 ba_win_sz, u16 ssn,
189 bool update_ssn)
190 {
191 struct ath12k_hal_reo_cmd cmd = {};
192 struct ath12k_base *ab = dp->ab;
193 int ret;
194 struct ath12k_dp_rx_tid_rxq rx_tid_rxq;
195
196 ath12k_dp_init_rx_tid_rxq(&rx_tid_rxq, rx_tid,
197 (peer->rx_tid_active_bitmask & (1 << rx_tid->tid)));
198
199 cmd.addr_lo = lower_32_bits(rx_tid_rxq.qbuf.paddr_aligned);
200 cmd.addr_hi = upper_32_bits(rx_tid_rxq.qbuf.paddr_aligned);
201 cmd.flag = HAL_REO_CMD_FLG_NEED_STATUS;
202 cmd.upd0 = HAL_REO_CMD_UPD0_BA_WINDOW_SIZE;
203 cmd.ba_window_size = ba_win_sz;
204
205 if (update_ssn) {
206 cmd.upd0 |= HAL_REO_CMD_UPD0_SSN;
207 cmd.upd2 = u32_encode_bits(ssn, HAL_REO_CMD_UPD2_SSN);
208 }
209
210 ret = ath12k_wifi7_dp_reo_cmd_send(ab, &rx_tid_rxq,
211 HAL_REO_CMD_UPDATE_RX_QUEUE, &cmd,
212 NULL);
213 if (ret) {
214 ath12k_warn(ab, "failed to update rx tid queue, tid %d (%d)\n",
215 rx_tid_rxq.tid, ret);
216 return ret;
217 }
218
219 rx_tid->ba_win_sz = ba_win_sz;
220
221 return 0;
222 }
223
ath12k_wifi7_dp_reo_cache_flush(struct ath12k_base * ab,struct ath12k_dp_rx_tid_rxq * rx_tid)224 int ath12k_wifi7_dp_reo_cache_flush(struct ath12k_base *ab,
225 struct ath12k_dp_rx_tid_rxq *rx_tid)
226 {
227 struct ath12k_hal_reo_cmd cmd = {};
228 int ret;
229
230 cmd.addr_lo = lower_32_bits(rx_tid->qbuf.paddr_aligned);
231 cmd.addr_hi = upper_32_bits(rx_tid->qbuf.paddr_aligned);
232 /* HAL_REO_CMD_FLG_FLUSH_FWD_ALL_MPDUS - all pending MPDUs
233 *in the bitmap will be forwarded/flushed to REO output rings
234 */
235 cmd.flag = HAL_REO_CMD_FLG_NEED_STATUS |
236 HAL_REO_CMD_FLG_FLUSH_FWD_ALL_MPDUS;
237
238 /* For all QoS TIDs (except NON_QOS), the driver allocates a maximum
239 * window size of 1024. In such cases, the driver can issue a single
240 * 1KB descriptor flush command instead of sending multiple 128-byte
241 * flush commands for each QoS TID, improving efficiency.
242 */
243
244 if (rx_tid->tid != HAL_DESC_REO_NON_QOS_TID)
245 cmd.flag |= HAL_REO_CMD_FLG_FLUSH_QUEUE_1K_DESC;
246
247 ret = ath12k_wifi7_dp_reo_cmd_send(ab, rx_tid,
248 HAL_REO_CMD_FLUSH_CACHE,
249 &cmd, ath12k_dp_reo_cmd_free);
250 return ret;
251 }
252
ath12k_wifi7_dp_rx_assign_reoq(struct ath12k_base * ab,struct ath12k_dp_peer * dp_peer,struct ath12k_dp_rx_tid * rx_tid,u16 ssn,enum hal_pn_type pn_type)253 int ath12k_wifi7_dp_rx_assign_reoq(struct ath12k_base *ab, struct ath12k_dp_peer *dp_peer,
254 struct ath12k_dp_rx_tid *rx_tid,
255 u16 ssn, enum hal_pn_type pn_type)
256 {
257 u32 ba_win_sz = rx_tid->ba_win_sz;
258 struct ath12k_reoq_buf *buf;
259 void *vaddr, *vaddr_aligned;
260 dma_addr_t paddr_aligned;
261 u8 tid = rx_tid->tid;
262 u32 hw_desc_sz;
263 int ret;
264
265 buf = &dp_peer->reoq_bufs[tid];
266 if (!buf->vaddr) {
267 /* TODO: Optimize the memory allocation for qos tid based on
268 * the actual BA window size in REO tid update path.
269 */
270 if (tid == HAL_DESC_REO_NON_QOS_TID)
271 hw_desc_sz = ath12k_wifi7_hal_reo_qdesc_size(ba_win_sz, tid);
272 else
273 hw_desc_sz = ath12k_wifi7_hal_reo_qdesc_size(DP_BA_WIN_SZ_MAX,
274 tid);
275
276 vaddr = kzalloc(hw_desc_sz + HAL_LINK_DESC_ALIGN - 1, GFP_ATOMIC);
277 if (!vaddr)
278 return -ENOMEM;
279
280 vaddr_aligned = PTR_ALIGN(vaddr, HAL_LINK_DESC_ALIGN);
281
282 ath12k_wifi7_hal_reo_qdesc_setup(vaddr_aligned, tid, ba_win_sz,
283 ssn, pn_type);
284
285 paddr_aligned = dma_map_single(ab->dev, vaddr_aligned, hw_desc_sz,
286 DMA_BIDIRECTIONAL);
287 ret = dma_mapping_error(ab->dev, paddr_aligned);
288 if (ret) {
289 kfree(vaddr);
290 return ret;
291 }
292
293 buf->vaddr = vaddr;
294 buf->paddr_aligned = paddr_aligned;
295 buf->size = hw_desc_sz;
296 }
297
298 rx_tid->qbuf = *buf;
299
300 return 0;
301 }
302
ath12k_wifi7_dp_rx_tid_delete_handler(struct ath12k_base * ab,struct ath12k_dp_rx_tid_rxq * rx_tid)303 int ath12k_wifi7_dp_rx_tid_delete_handler(struct ath12k_base *ab,
304 struct ath12k_dp_rx_tid_rxq *rx_tid)
305 {
306 struct ath12k_hal_reo_cmd cmd = {};
307
308 cmd.flag = HAL_REO_CMD_FLG_NEED_STATUS;
309 cmd.addr_lo = lower_32_bits(rx_tid->qbuf.paddr_aligned);
310 cmd.addr_hi = upper_32_bits(rx_tid->qbuf.paddr_aligned);
311 cmd.upd0 |= HAL_REO_CMD_UPD0_VLD;
312 /* Observed flush cache failure, to avoid that set vld bit during delete */
313 cmd.upd1 |= HAL_REO_CMD_UPD1_VLD;
314
315 return ath12k_wifi7_dp_reo_cmd_send(ab, rx_tid,
316 HAL_REO_CMD_UPDATE_RX_QUEUE, &cmd,
317 ath12k_dp_rx_tid_del_func);
318 }
319
ath12k_wifi7_dp_rx_h_csum_offload(struct sk_buff * msdu,struct hal_rx_desc_data * rx_info)320 static void ath12k_wifi7_dp_rx_h_csum_offload(struct sk_buff *msdu,
321 struct hal_rx_desc_data *rx_info)
322 {
323 msdu->ip_summed = (rx_info->ip_csum_fail || rx_info->l4_csum_fail) ?
324 CHECKSUM_NONE : CHECKSUM_UNNECESSARY;
325 }
326
ath12k_wifi7_dp_rx_h_mpdu(struct ath12k_pdev_dp * dp_pdev,struct sk_buff * msdu,struct hal_rx_desc_data * rx_info)327 static int ath12k_wifi7_dp_rx_h_mpdu(struct ath12k_pdev_dp *dp_pdev,
328 struct sk_buff *msdu,
329 struct hal_rx_desc_data *rx_info)
330 {
331 struct ath12k_skb_rxcb *rxcb;
332 enum hal_encrypt_type enctype;
333 bool is_decrypted = false;
334 struct ieee80211_hdr *hdr;
335 struct ath12k_dp_peer *peer;
336 struct ieee80211_rx_status *rx_status = rx_info->rx_status;
337 u32 err_bitmap = rx_info->err_bitmap;
338
339 RCU_LOCKDEP_WARN(!rcu_read_lock_held(),
340 "dp_rx_h_mpdu called without rcu lock");
341
342 /* PN for multicast packets will be checked in mac80211 */
343 rxcb = ATH12K_SKB_RXCB(msdu);
344 rxcb->is_mcbc = rx_info->is_mcbc;
345
346 if (rxcb->is_mcbc)
347 rxcb->peer_id = rx_info->peer_id;
348
349 peer = ath12k_dp_peer_find_by_peerid(dp_pdev, rxcb->peer_id);
350 if (peer) {
351 /*
352 * Drop the 3-address multicast packet from 4-address
353 * peer To avoid receiving the duplicate multicast packet
354 * Specifically from AP interface in 3-address format
355 */
356 if (rxcb->is_mcbc &&
357 rx_info->decap_type == DP_RX_DECAP_TYPE_ETHERNET2_DIX) {
358 if (peer->use_4addr &&
359 !(rx_info->is_from_ds && rx_info->is_to_ds))
360 return -EINVAL;
361 }
362
363 /* resetting mcbc bit because mcbc packets are unicast
364 * packets only for AP as STA sends unicast packets.
365 */
366 rxcb->is_mcbc = rxcb->is_mcbc && !peer->ucast_ra_only;
367
368 if (rxcb->is_mcbc)
369 enctype = peer->sec_type_grp;
370 else
371 enctype = peer->sec_type;
372 } else {
373 enctype = HAL_ENCRYPT_TYPE_OPEN;
374 }
375
376 if (enctype != HAL_ENCRYPT_TYPE_OPEN && !err_bitmap)
377 is_decrypted = rx_info->is_decrypted;
378
379 /* Clear per-MPDU flags while leaving per-PPDU flags intact */
380 rx_status->flag &= ~(RX_FLAG_FAILED_FCS_CRC |
381 RX_FLAG_MMIC_ERROR |
382 RX_FLAG_DECRYPTED |
383 RX_FLAG_IV_STRIPPED |
384 RX_FLAG_MMIC_STRIPPED);
385
386 if (err_bitmap & HAL_RX_MPDU_ERR_FCS)
387 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
388 if (err_bitmap & HAL_RX_MPDU_ERR_TKIP_MIC)
389 rx_status->flag |= RX_FLAG_MMIC_ERROR;
390
391 if (is_decrypted) {
392 rx_status->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MMIC_STRIPPED;
393
394 if (rx_info->is_mcbc)
395 rx_status->flag |= RX_FLAG_MIC_STRIPPED |
396 RX_FLAG_ICV_STRIPPED;
397 else
398 rx_status->flag |= RX_FLAG_IV_STRIPPED |
399 RX_FLAG_PN_VALIDATED;
400 }
401
402 ath12k_wifi7_dp_rx_h_csum_offload(msdu, rx_info);
403 ath12k_dp_rx_h_undecap(dp_pdev, msdu, enctype, is_decrypted, rx_info,
404 peer);
405
406 if (!is_decrypted || rx_info->is_mcbc)
407 return 0;
408
409 if (rx_info->decap_type != DP_RX_DECAP_TYPE_ETHERNET2_DIX) {
410 hdr = (void *)msdu->data;
411 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED);
412 }
413
414 return 0;
415 }
416
ath12k_wifi7_dp_rx_msdu_coalesce(struct ath12k_hal * hal,struct sk_buff_head * msdu_list,struct sk_buff * first,struct sk_buff * last,u8 l3pad_bytes,int msdu_len,struct hal_rx_desc_data * rx_info)417 static int ath12k_wifi7_dp_rx_msdu_coalesce(struct ath12k_hal *hal,
418 struct sk_buff_head *msdu_list,
419 struct sk_buff *first, struct sk_buff *last,
420 u8 l3pad_bytes, int msdu_len,
421 struct hal_rx_desc_data *rx_info)
422 {
423 struct sk_buff *skb;
424 struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(first);
425 int buf_first_hdr_len, buf_first_len;
426 struct hal_rx_desc *ldesc;
427 int space_extra, rem_len, buf_len;
428 u32 hal_rx_desc_sz = hal->hal_desc_sz;
429 bool is_continuation;
430
431 /* As the msdu is spread across multiple rx buffers,
432 * find the offset to the start of msdu for computing
433 * the length of the msdu in the first buffer.
434 */
435 buf_first_hdr_len = hal_rx_desc_sz + l3pad_bytes;
436 buf_first_len = DP_RX_BUFFER_SIZE - buf_first_hdr_len;
437
438 if (WARN_ON_ONCE(msdu_len <= buf_first_len)) {
439 skb_put(first, buf_first_hdr_len + msdu_len);
440 skb_pull(first, buf_first_hdr_len);
441 return 0;
442 }
443
444 ldesc = (struct hal_rx_desc *)last->data;
445 rxcb->is_first_msdu = rx_info->is_first_msdu;
446 rxcb->is_last_msdu = rx_info->is_last_msdu;
447
448 /* MSDU spans over multiple buffers because the length of the MSDU
449 * exceeds DP_RX_BUFFER_SIZE - HAL_RX_DESC_SIZE. So assume the data
450 * in the first buf is of length DP_RX_BUFFER_SIZE - HAL_RX_DESC_SIZE.
451 */
452 skb_put(first, DP_RX_BUFFER_SIZE);
453 skb_pull(first, buf_first_hdr_len);
454
455 /* When an MSDU spread over multiple buffers MSDU_END
456 * tlvs are valid only in the last buffer. Copy those tlvs.
457 */
458 ath12k_dp_rx_desc_end_tlv_copy(hal, rxcb->rx_desc, ldesc);
459
460 space_extra = msdu_len - (buf_first_len + skb_tailroom(first));
461 if (space_extra > 0 &&
462 (pskb_expand_head(first, 0, space_extra, GFP_ATOMIC) < 0)) {
463 /* Free up all buffers of the MSDU */
464 while ((skb = __skb_dequeue(msdu_list)) != NULL) {
465 rxcb = ATH12K_SKB_RXCB(skb);
466 if (!rxcb->is_continuation) {
467 dev_kfree_skb_any(skb);
468 break;
469 }
470 dev_kfree_skb_any(skb);
471 }
472 return -ENOMEM;
473 }
474
475 rem_len = msdu_len - buf_first_len;
476 while ((skb = __skb_dequeue(msdu_list)) != NULL && rem_len > 0) {
477 rxcb = ATH12K_SKB_RXCB(skb);
478 is_continuation = rxcb->is_continuation;
479 if (is_continuation)
480 buf_len = DP_RX_BUFFER_SIZE - hal_rx_desc_sz;
481 else
482 buf_len = rem_len;
483
484 if (buf_len > (DP_RX_BUFFER_SIZE - hal_rx_desc_sz)) {
485 WARN_ON_ONCE(1);
486 dev_kfree_skb_any(skb);
487 return -EINVAL;
488 }
489
490 skb_put(skb, buf_len + hal_rx_desc_sz);
491 skb_pull(skb, hal_rx_desc_sz);
492 skb_copy_from_linear_data(skb, skb_put(first, buf_len),
493 buf_len);
494 dev_kfree_skb_any(skb);
495
496 rem_len -= buf_len;
497 if (!is_continuation)
498 break;
499 }
500
501 return 0;
502 }
503
ath12k_wifi7_dp_rx_process_msdu(struct ath12k_pdev_dp * dp_pdev,struct sk_buff * msdu,struct sk_buff_head * msdu_list,struct hal_rx_desc_data * rx_info)504 static int ath12k_wifi7_dp_rx_process_msdu(struct ath12k_pdev_dp *dp_pdev,
505 struct sk_buff *msdu,
506 struct sk_buff_head *msdu_list,
507 struct hal_rx_desc_data *rx_info)
508 {
509 struct ath12k_dp *dp = dp_pdev->dp;
510 struct hal_rx_desc *rx_desc, *lrx_desc;
511 struct ath12k_skb_rxcb *rxcb;
512 struct sk_buff *last_buf;
513 struct ath12k_hal *hal = dp->hal;
514 u8 l3_pad_bytes;
515 u16 msdu_len;
516 int ret;
517 u32 hal_rx_desc_sz = hal->hal_desc_sz;
518
519 last_buf = ath12k_dp_rx_get_msdu_last_buf(msdu_list, msdu);
520 if (!last_buf) {
521 ath12k_warn(dp->ab,
522 "No valid Rx buffer to access MSDU_END tlv\n");
523 ret = -EIO;
524 goto free_out;
525 }
526
527 rx_desc = (struct hal_rx_desc *)msdu->data;
528 lrx_desc = (struct hal_rx_desc *)last_buf->data;
529
530 ath12k_dp_extract_rx_desc_data(hal, rx_info, rx_desc, lrx_desc);
531 if (!rx_info->msdu_done) {
532 ath12k_warn(dp->ab, "msdu_done bit in msdu_end is not set\n");
533 ret = -EIO;
534 goto free_out;
535 }
536
537 rxcb = ATH12K_SKB_RXCB(msdu);
538 rxcb->rx_desc = rx_desc;
539 msdu_len = rx_info->msdu_len;
540 l3_pad_bytes = rx_info->l3_pad_bytes;
541
542 if (rxcb->is_frag) {
543 skb_pull(msdu, hal_rx_desc_sz);
544 } else if (!rxcb->is_continuation) {
545 if ((msdu_len + hal_rx_desc_sz) > DP_RX_BUFFER_SIZE) {
546 ret = -EINVAL;
547 ath12k_warn(dp->ab, "invalid msdu len %u\n", msdu_len);
548 ath12k_dbg_dump(dp->ab, ATH12K_DBG_DATA, NULL, "", rx_desc,
549 sizeof(*rx_desc));
550 goto free_out;
551 }
552 skb_put(msdu, hal_rx_desc_sz + l3_pad_bytes + msdu_len);
553 skb_pull(msdu, hal_rx_desc_sz + l3_pad_bytes);
554 } else {
555 ret = ath12k_wifi7_dp_rx_msdu_coalesce(hal, msdu_list,
556 msdu, last_buf,
557 l3_pad_bytes, msdu_len,
558 rx_info);
559 if (ret) {
560 ath12k_warn(dp->ab,
561 "failed to coalesce msdu rx buffer%d\n", ret);
562 goto free_out;
563 }
564 }
565
566 if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu,
567 rx_info))) {
568 ret = -EINVAL;
569 goto free_out;
570 }
571
572 ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
573 ret = ath12k_wifi7_dp_rx_h_mpdu(dp_pdev, msdu, rx_info);
574 if (ret)
575 goto free_out;
576
577 rx_info->rx_status->flag |= RX_FLAG_SKIP_MONITOR | RX_FLAG_DUP_VALIDATED;
578
579 return 0;
580
581 free_out:
582 return ret;
583 }
584
585 static void
ath12k_wifi7_dp_rx_process_received_packets(struct ath12k_dp * dp,struct napi_struct * napi,struct sk_buff_head * msdu_list,int ring_id)586 ath12k_wifi7_dp_rx_process_received_packets(struct ath12k_dp *dp,
587 struct napi_struct *napi,
588 struct sk_buff_head *msdu_list,
589 int ring_id)
590 {
591 struct ath12k_hw_group *ag = dp->ag;
592 struct ath12k_dp_hw_group *dp_hw_grp = &ag->dp_hw_grp;
593 struct ieee80211_rx_status rx_status = {};
594 struct ath12k_skb_rxcb *rxcb;
595 struct sk_buff *msdu;
596 struct ath12k *ar;
597 struct ath12k_pdev_dp *dp_pdev;
598 struct ath12k_hw_link *hw_links = ag->hw_links;
599 struct ath12k_base *partner_ab;
600 struct hal_rx_desc_data rx_info;
601 struct ath12k_dp *partner_dp;
602 u8 hw_link_id, pdev_idx;
603 int ret;
604
605 if (skb_queue_empty(msdu_list))
606 return;
607
608 rx_info.addr2_present = false;
609 rx_info.rx_status = &rx_status;
610
611 rcu_read_lock();
612
613 while ((msdu = __skb_dequeue(msdu_list))) {
614 rxcb = ATH12K_SKB_RXCB(msdu);
615 hw_link_id = rxcb->hw_link_id;
616 partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp,
617 hw_links[hw_link_id].device_id);
618 pdev_idx = ath12k_hw_mac_id_to_pdev_id(partner_dp->hw_params,
619 hw_links[hw_link_id].pdev_idx);
620 partner_ab = partner_dp->ab;
621 ar = partner_ab->pdevs[pdev_idx].ar;
622 if (!rcu_dereference(partner_ab->pdevs_active[pdev_idx])) {
623 dev_kfree_skb_any(msdu);
624 continue;
625 }
626
627 if (test_bit(ATH12K_FLAG_CAC_RUNNING, &ar->dev_flags)) {
628 dev_kfree_skb_any(msdu);
629 continue;
630 }
631
632 dp_pdev = ath12k_dp_to_pdev_dp(partner_dp, pdev_idx);
633 if (!dp_pdev) {
634 dev_kfree_skb_any(msdu);
635 continue;
636 }
637
638 ret = ath12k_wifi7_dp_rx_process_msdu(dp_pdev, msdu, msdu_list, &rx_info);
639 if (ret) {
640 ath12k_dbg(dp->ab, ATH12K_DBG_DATA,
641 "Unable to process msdu %d", ret);
642 dev_kfree_skb_any(msdu);
643 continue;
644 }
645
646 ath12k_dp_rx_deliver_msdu(dp_pdev, napi, msdu, &rx_info);
647 }
648
649 rcu_read_unlock();
650 }
651
ath12k_wifi7_dp_rx_process(struct ath12k_dp * dp,int ring_id,struct napi_struct * napi,int budget)652 int ath12k_wifi7_dp_rx_process(struct ath12k_dp *dp, int ring_id,
653 struct napi_struct *napi, int budget)
654 {
655 struct ath12k_hw_group *ag = dp->ag;
656 struct ath12k_base *ab = dp->ab;
657 struct ath12k_hal *hal = dp->hal;
658 struct ath12k_dp_hw_group *dp_hw_grp = &ag->dp_hw_grp;
659 struct list_head rx_desc_used_list[ATH12K_MAX_DEVICES];
660 struct ath12k_hw_link *hw_links = ag->hw_links;
661 int num_buffs_reaped[ATH12K_MAX_DEVICES] = {};
662 struct ath12k_rx_desc_info *desc_info;
663 struct dp_rxdma_ring *rx_ring = &dp->rx_refill_buf_ring;
664 struct hal_reo_dest_ring *desc;
665 struct ath12k_dp *partner_dp;
666 struct sk_buff_head msdu_list;
667 struct ath12k_skb_rxcb *rxcb;
668 int total_msdu_reaped = 0;
669 u8 hw_link_id, device_id;
670 struct hal_srng *srng;
671 struct sk_buff *msdu;
672 bool done = false;
673 u64 desc_va;
674
675 __skb_queue_head_init(&msdu_list);
676
677 for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++)
678 INIT_LIST_HEAD(&rx_desc_used_list[device_id]);
679
680 srng = &hal->srng_list[dp->reo_dst_ring[ring_id].ring_id];
681
682 spin_lock_bh(&srng->lock);
683
684 try_again:
685 ath12k_hal_srng_access_begin(ab, srng);
686
687 while ((desc = ath12k_hal_srng_dst_get_next_entry(ab, srng))) {
688 struct rx_mpdu_desc *mpdu_info;
689 struct rx_msdu_desc *msdu_info;
690 enum hal_reo_dest_ring_push_reason push_reason;
691 u32 cookie;
692
693 cookie = le32_get_bits(desc->buf_addr_info.info1,
694 BUFFER_ADDR_INFO1_SW_COOKIE);
695
696 hw_link_id = le32_get_bits(desc->info0,
697 HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
698
699 desc_va = ((u64)le32_to_cpu(desc->buf_va_hi) << 32 |
700 le32_to_cpu(desc->buf_va_lo));
701 desc_info = (struct ath12k_rx_desc_info *)((unsigned long)desc_va);
702
703 device_id = hw_links[hw_link_id].device_id;
704 partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
705 if (unlikely(!partner_dp)) {
706 if (desc_info->skb) {
707 dev_kfree_skb_any(desc_info->skb);
708 desc_info->skb = NULL;
709 }
710
711 continue;
712 }
713
714 /* retry manual desc retrieval */
715 if (!desc_info) {
716 desc_info = ath12k_dp_get_rx_desc(partner_dp, cookie);
717 if (!desc_info) {
718 ath12k_warn(partner_dp->ab, "Invalid cookie in manual descriptor retrieval: 0x%x\n",
719 cookie);
720 continue;
721 }
722 }
723
724 if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC)
725 ath12k_warn(ab, "Check HW CC implementation");
726
727 msdu = desc_info->skb;
728 desc_info->skb = NULL;
729
730 list_add_tail(&desc_info->list, &rx_desc_used_list[device_id]);
731
732 rxcb = ATH12K_SKB_RXCB(msdu);
733 dma_unmap_single(partner_dp->dev, rxcb->paddr,
734 msdu->len + skb_tailroom(msdu),
735 DMA_FROM_DEVICE);
736
737 num_buffs_reaped[device_id]++;
738 dp->device_stats.reo_rx[ring_id][dp->device_id]++;
739
740 push_reason = le32_get_bits(desc->info0,
741 HAL_REO_DEST_RING_INFO0_PUSH_REASON);
742 if (push_reason !=
743 HAL_REO_DEST_RING_PUSH_REASON_ROUTING_INSTRUCTION) {
744 dev_kfree_skb_any(msdu);
745 dp->device_stats.hal_reo_error[ring_id]++;
746 continue;
747 }
748
749 msdu_info = &desc->rx_msdu_info;
750 mpdu_info = &desc->rx_mpdu_info;
751
752 rxcb->is_first_msdu = !!(le32_to_cpu(msdu_info->info0) &
753 RX_MSDU_DESC_INFO0_FIRST_MSDU_IN_MPDU);
754 rxcb->is_last_msdu = !!(le32_to_cpu(msdu_info->info0) &
755 RX_MSDU_DESC_INFO0_LAST_MSDU_IN_MPDU);
756 rxcb->is_continuation = !!(le32_to_cpu(msdu_info->info0) &
757 RX_MSDU_DESC_INFO0_MSDU_CONTINUATION);
758 rxcb->hw_link_id = hw_link_id;
759 rxcb->peer_id = ath12k_wifi7_dp_rx_get_peer_id(dp, dp->peer_metadata_ver,
760 mpdu_info->peer_meta_data);
761 rxcb->tid = le32_get_bits(mpdu_info->info0,
762 RX_MPDU_DESC_INFO0_TID);
763
764 __skb_queue_tail(&msdu_list, msdu);
765
766 if (!rxcb->is_continuation) {
767 total_msdu_reaped++;
768 done = true;
769 } else {
770 done = false;
771 }
772
773 if (total_msdu_reaped >= budget)
774 break;
775 }
776
777 /* Hw might have updated the head pointer after we cached it.
778 * In this case, even though there are entries in the ring we'll
779 * get rx_desc NULL. Give the read another try with updated cached
780 * head pointer so that we can reap complete MPDU in the current
781 * rx processing.
782 */
783 if (!done && ath12k_hal_srng_dst_num_free(ab, srng, true)) {
784 ath12k_hal_srng_access_end(ab, srng);
785 goto try_again;
786 }
787
788 ath12k_hal_srng_access_end(ab, srng);
789
790 spin_unlock_bh(&srng->lock);
791
792 if (!total_msdu_reaped)
793 goto exit;
794
795 for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++) {
796 if (!num_buffs_reaped[device_id])
797 continue;
798
799 partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
800 rx_ring = &partner_dp->rx_refill_buf_ring;
801
802 ath12k_dp_rx_bufs_replenish(partner_dp, rx_ring,
803 &rx_desc_used_list[device_id],
804 num_buffs_reaped[device_id]);
805 }
806
807 ath12k_wifi7_dp_rx_process_received_packets(dp, napi, &msdu_list,
808 ring_id);
809
810 exit:
811 return total_msdu_reaped;
812 }
813
814 static bool
ath12k_wifi7_dp_rx_h_defrag_validate_incr_pn(struct ath12k_pdev_dp * dp_pdev,struct ath12k_dp_rx_tid * rx_tid,enum hal_encrypt_type encrypt_type)815 ath12k_wifi7_dp_rx_h_defrag_validate_incr_pn(struct ath12k_pdev_dp *dp_pdev,
816 struct ath12k_dp_rx_tid *rx_tid,
817 enum hal_encrypt_type encrypt_type)
818 {
819 struct ath12k_dp *dp = dp_pdev->dp;
820 struct sk_buff *first_frag, *skb;
821 u64 last_pn;
822 u64 cur_pn;
823
824 first_frag = skb_peek(&rx_tid->rx_frags);
825
826 if (encrypt_type != HAL_ENCRYPT_TYPE_CCMP_128 &&
827 encrypt_type != HAL_ENCRYPT_TYPE_CCMP_256 &&
828 encrypt_type != HAL_ENCRYPT_TYPE_GCMP_128 &&
829 encrypt_type != HAL_ENCRYPT_TYPE_AES_GCMP_256)
830 return true;
831
832 last_pn = ath12k_dp_rx_h_get_pn(dp, first_frag);
833 skb_queue_walk(&rx_tid->rx_frags, skb) {
834 if (skb == first_frag)
835 continue;
836
837 cur_pn = ath12k_dp_rx_h_get_pn(dp, skb);
838 if (cur_pn != last_pn + 1)
839 return false;
840 last_pn = cur_pn;
841 }
842 return true;
843 }
844
ath12k_wifi7_dp_rx_h_defrag_reo_reinject(struct ath12k_dp * dp,struct ath12k_dp_rx_tid * rx_tid,struct sk_buff * defrag_skb)845 static int ath12k_wifi7_dp_rx_h_defrag_reo_reinject(struct ath12k_dp *dp,
846 struct ath12k_dp_rx_tid *rx_tid,
847 struct sk_buff *defrag_skb)
848 {
849 struct ath12k_base *ab = dp->ab;
850 struct ath12k_hal *hal = dp->hal;
851 struct hal_rx_desc *rx_desc = (struct hal_rx_desc *)defrag_skb->data;
852 struct hal_reo_entrance_ring *reo_ent_ring;
853 struct hal_reo_dest_ring *reo_dest_ring;
854 struct dp_link_desc_bank *link_desc_banks;
855 struct hal_rx_msdu_link *msdu_link;
856 struct hal_rx_msdu_details *msdu0;
857 struct hal_srng *srng;
858 dma_addr_t link_paddr, buf_paddr;
859 u32 desc_bank, msdu_info, msdu_ext_info, mpdu_info;
860 u32 cookie, hal_rx_desc_sz, dest_ring_info0, queue_addr_hi;
861 int ret;
862 struct ath12k_rx_desc_info *desc_info;
863 enum hal_rx_buf_return_buf_manager idle_link_rbm = dp->idle_link_rbm;
864 u8 dst_ind;
865
866 hal_rx_desc_sz = hal->hal_desc_sz;
867 link_desc_banks = dp->link_desc_banks;
868 reo_dest_ring = rx_tid->dst_ring_desc;
869
870 ath12k_wifi7_hal_rx_reo_ent_paddr_get(&reo_dest_ring->buf_addr_info,
871 &link_paddr, &cookie);
872 desc_bank = u32_get_bits(cookie, DP_LINK_DESC_BANK_MASK);
873
874 msdu_link = (struct hal_rx_msdu_link *)(link_desc_banks[desc_bank].vaddr +
875 (link_paddr - link_desc_banks[desc_bank].paddr));
876 msdu0 = &msdu_link->msdu_link[0];
877 msdu_ext_info = le32_to_cpu(msdu0->rx_msdu_ext_info.info0);
878 dst_ind = u32_get_bits(msdu_ext_info, RX_MSDU_EXT_DESC_INFO0_REO_DEST_IND);
879
880 memset(msdu0, 0, sizeof(*msdu0));
881
882 msdu_info = u32_encode_bits(1, RX_MSDU_DESC_INFO0_FIRST_MSDU_IN_MPDU) |
883 u32_encode_bits(1, RX_MSDU_DESC_INFO0_LAST_MSDU_IN_MPDU) |
884 u32_encode_bits(0, RX_MSDU_DESC_INFO0_MSDU_CONTINUATION) |
885 u32_encode_bits(defrag_skb->len - hal_rx_desc_sz,
886 RX_MSDU_DESC_INFO0_MSDU_LENGTH) |
887 u32_encode_bits(1, RX_MSDU_DESC_INFO0_VALID_SA) |
888 u32_encode_bits(1, RX_MSDU_DESC_INFO0_VALID_DA);
889 msdu0->rx_msdu_info.info0 = cpu_to_le32(msdu_info);
890 msdu0->rx_msdu_ext_info.info0 = cpu_to_le32(msdu_ext_info);
891
892 /* change msdu len in hal rx desc */
893 ath12k_dp_rxdesc_set_msdu_len(hal, rx_desc, defrag_skb->len - hal_rx_desc_sz);
894
895 buf_paddr = dma_map_single(dp->dev, defrag_skb->data,
896 defrag_skb->len + skb_tailroom(defrag_skb),
897 DMA_TO_DEVICE);
898 if (dma_mapping_error(dp->dev, buf_paddr))
899 return -ENOMEM;
900
901 spin_lock_bh(&dp->rx_desc_lock);
902 desc_info = list_first_entry_or_null(&dp->rx_desc_free_list,
903 struct ath12k_rx_desc_info,
904 list);
905 if (!desc_info) {
906 spin_unlock_bh(&dp->rx_desc_lock);
907 ath12k_warn(ab, "failed to find rx desc for reinject\n");
908 ret = -ENOMEM;
909 goto err_unmap_dma;
910 }
911
912 desc_info->skb = defrag_skb;
913 desc_info->in_use = true;
914
915 list_del(&desc_info->list);
916 spin_unlock_bh(&dp->rx_desc_lock);
917
918 ATH12K_SKB_RXCB(defrag_skb)->paddr = buf_paddr;
919
920 ath12k_wifi7_hal_rx_buf_addr_info_set(&msdu0->buf_addr_info, buf_paddr,
921 desc_info->cookie,
922 HAL_RX_BUF_RBM_SW3_BM);
923
924 /* Fill mpdu details into reo entrance ring */
925 srng = &hal->srng_list[dp->reo_reinject_ring.ring_id];
926
927 spin_lock_bh(&srng->lock);
928 ath12k_hal_srng_access_begin(ab, srng);
929
930 reo_ent_ring = ath12k_hal_srng_src_get_next_entry(ab, srng);
931 if (!reo_ent_ring) {
932 ath12k_hal_srng_access_end(ab, srng);
933 spin_unlock_bh(&srng->lock);
934 ret = -ENOSPC;
935 goto err_free_desc;
936 }
937 memset(reo_ent_ring, 0, sizeof(*reo_ent_ring));
938
939 ath12k_wifi7_hal_rx_buf_addr_info_set(&reo_ent_ring->buf_addr_info, link_paddr,
940 cookie, idle_link_rbm);
941
942 mpdu_info = u32_encode_bits(1, RX_MPDU_DESC_INFO0_MSDU_COUNT) |
943 u32_encode_bits(0, RX_MPDU_DESC_INFO0_FRAG_FLAG) |
944 u32_encode_bits(1, RX_MPDU_DESC_INFO0_RAW_MPDU) |
945 u32_encode_bits(1, RX_MPDU_DESC_INFO0_VALID_PN) |
946 u32_encode_bits(rx_tid->tid, RX_MPDU_DESC_INFO0_TID);
947
948 reo_ent_ring->rx_mpdu_info.info0 = cpu_to_le32(mpdu_info);
949 reo_ent_ring->rx_mpdu_info.peer_meta_data =
950 reo_dest_ring->rx_mpdu_info.peer_meta_data;
951
952 if (dp->hw_params->reoq_lut_support) {
953 reo_ent_ring->queue_addr_lo = reo_dest_ring->rx_mpdu_info.peer_meta_data;
954 queue_addr_hi = 0;
955 } else {
956 reo_ent_ring->queue_addr_lo =
957 cpu_to_le32(lower_32_bits(rx_tid->qbuf.paddr_aligned));
958 queue_addr_hi = upper_32_bits(rx_tid->qbuf.paddr_aligned);
959 }
960
961 reo_ent_ring->info0 = le32_encode_bits(queue_addr_hi,
962 HAL_REO_ENTR_RING_INFO0_QUEUE_ADDR_HI) |
963 le32_encode_bits(dst_ind,
964 HAL_REO_ENTR_RING_INFO0_DEST_IND);
965
966 reo_ent_ring->info1 = le32_encode_bits(rx_tid->cur_sn,
967 HAL_REO_ENTR_RING_INFO1_MPDU_SEQ_NUM);
968 dest_ring_info0 = le32_get_bits(reo_dest_ring->info0,
969 HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
970 reo_ent_ring->info2 =
971 cpu_to_le32(u32_get_bits(dest_ring_info0,
972 HAL_REO_ENTR_RING_INFO2_SRC_LINK_ID));
973
974 ath12k_hal_srng_access_end(ab, srng);
975 spin_unlock_bh(&srng->lock);
976
977 return 0;
978
979 err_free_desc:
980 spin_lock_bh(&dp->rx_desc_lock);
981 desc_info->in_use = false;
982 desc_info->skb = NULL;
983 list_add_tail(&desc_info->list, &dp->rx_desc_free_list);
984 spin_unlock_bh(&dp->rx_desc_lock);
985 err_unmap_dma:
986 dma_unmap_single(dp->dev, buf_paddr, defrag_skb->len + skb_tailroom(defrag_skb),
987 DMA_TO_DEVICE);
988 return ret;
989 }
990
ath12k_wifi7_dp_rx_h_verify_tkip_mic(struct ath12k_pdev_dp * dp_pdev,struct ath12k_dp_peer * peer,enum hal_encrypt_type enctype,struct sk_buff * msdu,struct hal_rx_desc_data * rx_info)991 static int ath12k_wifi7_dp_rx_h_verify_tkip_mic(struct ath12k_pdev_dp *dp_pdev,
992 struct ath12k_dp_peer *peer,
993 enum hal_encrypt_type enctype,
994 struct sk_buff *msdu,
995 struct hal_rx_desc_data *rx_info)
996 {
997 struct ath12k_dp *dp = dp_pdev->dp;
998 struct ath12k_hal *hal = dp->hal;
999 struct hal_rx_desc *rx_desc = (struct hal_rx_desc *)msdu->data;
1000 struct ieee80211_rx_status *rxs = IEEE80211_SKB_RXCB(msdu);
1001 struct ieee80211_key_conf *key_conf;
1002 struct ieee80211_hdr *hdr;
1003 u8 mic[IEEE80211_CCMP_MIC_LEN];
1004 int head_len, tail_len;
1005 size_t data_len;
1006 u32 hdr_len, hal_rx_desc_sz = hal->hal_desc_sz;
1007 u8 *key, *data;
1008 u8 key_idx;
1009
1010 if (enctype != HAL_ENCRYPT_TYPE_TKIP_MIC)
1011 return 0;
1012
1013 rx_info->addr2_present = false;
1014 rx_info->rx_status = rxs;
1015
1016 hdr = (struct ieee80211_hdr *)(msdu->data + hal_rx_desc_sz);
1017 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1018 head_len = hdr_len + hal_rx_desc_sz + IEEE80211_TKIP_IV_LEN;
1019 tail_len = IEEE80211_CCMP_MIC_LEN + IEEE80211_TKIP_ICV_LEN + FCS_LEN;
1020
1021 if (!is_multicast_ether_addr(hdr->addr1))
1022 key_idx = peer->ucast_keyidx;
1023 else
1024 key_idx = peer->mcast_keyidx;
1025
1026 key_conf = peer->keys[key_idx];
1027
1028 data = msdu->data + head_len;
1029 data_len = msdu->len - head_len - tail_len;
1030 key = &key_conf->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY];
1031
1032 michael_mic(key, hdr, data, data_len, mic);
1033 if (memcmp(mic, data + data_len, IEEE80211_CCMP_MIC_LEN))
1034 goto mic_fail;
1035
1036 return 0;
1037
1038 mic_fail:
1039 (ATH12K_SKB_RXCB(msdu))->is_first_msdu = true;
1040 (ATH12K_SKB_RXCB(msdu))->is_last_msdu = true;
1041
1042 ath12k_dp_extract_rx_desc_data(hal, rx_info, rx_desc, rx_desc);
1043
1044 rxs->flag |= RX_FLAG_MMIC_ERROR | RX_FLAG_MMIC_STRIPPED |
1045 RX_FLAG_IV_STRIPPED | RX_FLAG_DECRYPTED;
1046 skb_pull(msdu, hal_rx_desc_sz);
1047
1048 if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu,
1049 rx_info))) {
1050 dev_kfree_skb_any(msdu);
1051 return -EINVAL;
1052 }
1053
1054 ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
1055 ath12k_dp_rx_h_undecap(dp_pdev, msdu, HAL_ENCRYPT_TYPE_TKIP_MIC, true,
1056 rx_info, NULL);
1057 ieee80211_rx(ath12k_pdev_dp_to_hw(dp_pdev), msdu);
1058 return -EINVAL;
1059 }
1060
ath12k_wifi7_dp_rx_h_defrag(struct ath12k_pdev_dp * dp_pdev,struct ath12k_dp_peer * peer,struct ath12k_dp_rx_tid * rx_tid,struct sk_buff ** defrag_skb,enum hal_encrypt_type enctype,struct hal_rx_desc_data * rx_info)1061 static int ath12k_wifi7_dp_rx_h_defrag(struct ath12k_pdev_dp *dp_pdev,
1062 struct ath12k_dp_peer *peer,
1063 struct ath12k_dp_rx_tid *rx_tid,
1064 struct sk_buff **defrag_skb,
1065 enum hal_encrypt_type enctype,
1066 struct hal_rx_desc_data *rx_info)
1067 {
1068 struct ath12k_dp *dp = dp_pdev->dp;
1069 struct ath12k_base *ab = dp->ab;
1070 struct sk_buff *skb, *first_frag, *last_frag;
1071 struct ieee80211_hdr *hdr;
1072 bool is_decrypted = false;
1073 int msdu_len = 0;
1074 int extra_space;
1075 u32 flags, hal_rx_desc_sz = ab->hal.hal_desc_sz;
1076
1077 first_frag = skb_peek(&rx_tid->rx_frags);
1078 last_frag = skb_peek_tail(&rx_tid->rx_frags);
1079
1080 skb_queue_walk(&rx_tid->rx_frags, skb) {
1081 flags = 0;
1082 hdr = (struct ieee80211_hdr *)(skb->data + hal_rx_desc_sz);
1083
1084 if (enctype != HAL_ENCRYPT_TYPE_OPEN)
1085 is_decrypted = rx_info->is_decrypted;
1086
1087 if (is_decrypted) {
1088 if (skb != first_frag)
1089 flags |= RX_FLAG_IV_STRIPPED;
1090 if (skb != last_frag)
1091 flags |= RX_FLAG_ICV_STRIPPED |
1092 RX_FLAG_MIC_STRIPPED;
1093 }
1094
1095 /* RX fragments are always raw packets */
1096 if (skb != last_frag)
1097 skb_trim(skb, skb->len - FCS_LEN);
1098 ath12k_dp_rx_h_undecap_frag(dp_pdev, skb, enctype, flags);
1099
1100 if (skb != first_frag)
1101 skb_pull(skb, hal_rx_desc_sz +
1102 ieee80211_hdrlen(hdr->frame_control));
1103 msdu_len += skb->len;
1104 }
1105
1106 extra_space = msdu_len - (DP_RX_BUFFER_SIZE + skb_tailroom(first_frag));
1107 if (extra_space > 0 &&
1108 (pskb_expand_head(first_frag, 0, extra_space, GFP_ATOMIC) < 0))
1109 return -ENOMEM;
1110
1111 __skb_unlink(first_frag, &rx_tid->rx_frags);
1112 while ((skb = __skb_dequeue(&rx_tid->rx_frags))) {
1113 skb_put_data(first_frag, skb->data, skb->len);
1114 dev_kfree_skb_any(skb);
1115 }
1116
1117 hdr = (struct ieee80211_hdr *)(first_frag->data + hal_rx_desc_sz);
1118 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_FCTL_MOREFRAGS);
1119 ATH12K_SKB_RXCB(first_frag)->is_frag = 1;
1120
1121 if (ath12k_wifi7_dp_rx_h_verify_tkip_mic(dp_pdev, peer, enctype, first_frag,
1122 rx_info))
1123 first_frag = NULL;
1124
1125 *defrag_skb = first_frag;
1126 return 0;
1127 }
1128
ath12k_wifi7_dp_rx_frags_cleanup(struct ath12k_dp_rx_tid * rx_tid,bool rel_link_desc)1129 void ath12k_wifi7_dp_rx_frags_cleanup(struct ath12k_dp_rx_tid *rx_tid,
1130 bool rel_link_desc)
1131 {
1132 enum hal_wbm_rel_bm_act act = HAL_WBM_REL_BM_ACT_PUT_IN_IDLE;
1133 struct ath12k_buffer_addr *buf_addr_info;
1134 struct ath12k_dp *dp = rx_tid->dp;
1135
1136 lockdep_assert_held(&dp->dp_lock);
1137
1138 if (rx_tid->dst_ring_desc) {
1139 if (rel_link_desc) {
1140 buf_addr_info = &rx_tid->dst_ring_desc->buf_addr_info;
1141 ath12k_wifi7_dp_rx_link_desc_return(dp, buf_addr_info, act);
1142 }
1143 kfree(rx_tid->dst_ring_desc);
1144 rx_tid->dst_ring_desc = NULL;
1145 }
1146
1147 rx_tid->cur_sn = 0;
1148 rx_tid->last_frag_no = 0;
1149 rx_tid->rx_frag_bitmap = 0;
1150 __skb_queue_purge(&rx_tid->rx_frags);
1151 }
1152
ath12k_wifi7_dp_rx_frag_h_mpdu(struct ath12k_pdev_dp * dp_pdev,struct sk_buff * msdu,struct hal_reo_dest_ring * ring_desc,struct hal_rx_desc_data * rx_info)1153 static int ath12k_wifi7_dp_rx_frag_h_mpdu(struct ath12k_pdev_dp *dp_pdev,
1154 struct sk_buff *msdu,
1155 struct hal_reo_dest_ring *ring_desc,
1156 struct hal_rx_desc_data *rx_info)
1157 {
1158 struct ath12k_dp *dp = dp_pdev->dp;
1159 struct ath12k_hal *hal = dp->hal;
1160 struct ath12k_base *ab = dp->ab;
1161 struct ath12k_dp_peer *peer;
1162 struct ath12k_dp_rx_tid *rx_tid;
1163 struct sk_buff *defrag_skb = NULL;
1164 u32 peer_id = rx_info->peer_id;
1165 u16 seqno, frag_no;
1166 u8 tid = rx_info->tid;
1167 int ret = 0;
1168 bool more_frags;
1169 enum hal_encrypt_type enctype = rx_info->enctype;
1170
1171 frag_no = ath12k_dp_rx_h_frag_no(hal, msdu);
1172 more_frags = ath12k_dp_rx_h_more_frags(hal, msdu);
1173 seqno = rx_info->seq_no;
1174
1175 if (!rx_info->seq_ctl_valid || !rx_info->fc_valid ||
1176 tid > IEEE80211_NUM_TIDS)
1177 return -EINVAL;
1178
1179 /* received unfragmented packet in reo
1180 * exception ring, this shouldn't happen
1181 * as these packets typically come from
1182 * reo2sw srngs.
1183 */
1184 if (WARN_ON_ONCE(!frag_no && !more_frags))
1185 return -EINVAL;
1186
1187 spin_lock_bh(&dp->dp_lock);
1188 peer = ath12k_dp_peer_find_by_peerid(dp_pdev, peer_id);
1189 if (!peer) {
1190 ath12k_warn(ab, "failed to find the peer to de-fragment received fragment peer_id %d\n",
1191 peer_id);
1192 ret = -ENOENT;
1193 goto out_unlock;
1194 }
1195
1196 if (!peer->dp_setup_done) {
1197 ath12k_warn(ab, "The peer %pM [%d] has uninitialized datapath\n",
1198 peer->addr, peer_id);
1199 ret = -ENOENT;
1200 goto out_unlock;
1201 }
1202
1203 rx_tid = &peer->rx_tid[tid];
1204
1205 if ((!skb_queue_empty(&rx_tid->rx_frags) && seqno != rx_tid->cur_sn) ||
1206 skb_queue_empty(&rx_tid->rx_frags)) {
1207 /* Flush stored fragments and start a new sequence */
1208 ath12k_wifi7_dp_rx_frags_cleanup(rx_tid, true);
1209 rx_tid->cur_sn = seqno;
1210 }
1211
1212 if (rx_tid->rx_frag_bitmap & BIT(frag_no)) {
1213 /* Fragment already present */
1214 ret = -EINVAL;
1215 goto out_unlock;
1216 }
1217
1218 if ((!rx_tid->rx_frag_bitmap || frag_no > __fls(rx_tid->rx_frag_bitmap)))
1219 __skb_queue_tail(&rx_tid->rx_frags, msdu);
1220 else
1221 ath12k_dp_rx_h_sort_frags(hal, &rx_tid->rx_frags, msdu);
1222
1223 rx_tid->rx_frag_bitmap |= BIT(frag_no);
1224 if (!more_frags)
1225 rx_tid->last_frag_no = frag_no;
1226
1227 if (frag_no == 0) {
1228 rx_tid->dst_ring_desc = kmemdup(ring_desc,
1229 sizeof(*rx_tid->dst_ring_desc),
1230 GFP_ATOMIC);
1231 if (!rx_tid->dst_ring_desc) {
1232 ret = -ENOMEM;
1233 goto out_unlock;
1234 }
1235 } else {
1236 ath12k_wifi7_dp_rx_link_desc_return(dp, &ring_desc->buf_addr_info,
1237 HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
1238 }
1239
1240 if (!rx_tid->last_frag_no ||
1241 rx_tid->rx_frag_bitmap != GENMASK(rx_tid->last_frag_no, 0)) {
1242 mod_timer(&rx_tid->frag_timer, jiffies +
1243 ATH12K_DP_RX_FRAGMENT_TIMEOUT_MS);
1244 goto out_unlock;
1245 }
1246
1247 spin_unlock_bh(&dp->dp_lock);
1248 timer_delete_sync(&rx_tid->frag_timer);
1249 spin_lock_bh(&dp->dp_lock);
1250
1251 peer = ath12k_dp_peer_find_by_peerid(dp_pdev, peer_id);
1252 if (!peer)
1253 goto err_frags_cleanup;
1254
1255 if (!ath12k_wifi7_dp_rx_h_defrag_validate_incr_pn(dp_pdev, rx_tid, enctype))
1256 goto err_frags_cleanup;
1257
1258 if (ath12k_wifi7_dp_rx_h_defrag(dp_pdev, peer, rx_tid, &defrag_skb,
1259 enctype, rx_info))
1260 goto err_frags_cleanup;
1261
1262 if (!defrag_skb)
1263 goto err_frags_cleanup;
1264
1265 if (ath12k_wifi7_dp_rx_h_defrag_reo_reinject(dp, rx_tid, defrag_skb))
1266 goto err_frags_cleanup;
1267
1268 ath12k_wifi7_dp_rx_frags_cleanup(rx_tid, false);
1269 goto out_unlock;
1270
1271 err_frags_cleanup:
1272 dev_kfree_skb_any(defrag_skb);
1273 ath12k_wifi7_dp_rx_frags_cleanup(rx_tid, true);
1274 out_unlock:
1275 spin_unlock_bh(&dp->dp_lock);
1276 return ret;
1277 }
1278
1279 static int
ath12k_wifi7_dp_process_rx_err_buf(struct ath12k_pdev_dp * dp_pdev,struct hal_reo_dest_ring * desc,struct list_head * used_list,bool drop,u32 cookie)1280 ath12k_wifi7_dp_process_rx_err_buf(struct ath12k_pdev_dp *dp_pdev,
1281 struct hal_reo_dest_ring *desc,
1282 struct list_head *used_list,
1283 bool drop, u32 cookie)
1284 {
1285 struct ath12k *ar = ath12k_pdev_dp_to_ar(dp_pdev);
1286 struct ath12k_dp *dp = dp_pdev->dp;
1287 struct ath12k_hal *hal = dp->hal;
1288 struct sk_buff *msdu;
1289 struct ath12k_skb_rxcb *rxcb;
1290 struct hal_rx_desc_data rx_info;
1291 struct hal_rx_desc *rx_desc;
1292 u16 msdu_len;
1293 u32 hal_rx_desc_sz = hal->hal_desc_sz;
1294 struct ath12k_rx_desc_info *desc_info;
1295 u64 desc_va;
1296
1297 desc_va = ((u64)le32_to_cpu(desc->buf_va_hi) << 32 |
1298 le32_to_cpu(desc->buf_va_lo));
1299 desc_info = (struct ath12k_rx_desc_info *)((unsigned long)desc_va);
1300
1301 /* retry manual desc retrieval */
1302 if (!desc_info) {
1303 desc_info = ath12k_dp_get_rx_desc(dp, cookie);
1304 if (!desc_info) {
1305 ath12k_warn(dp->ab,
1306 "Invalid cookie in DP rx error descriptor retrieval: 0x%x\n",
1307 cookie);
1308 return -EINVAL;
1309 }
1310 }
1311
1312 if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC)
1313 ath12k_warn(dp->ab, "RX Exception, Check HW CC implementation");
1314
1315 msdu = desc_info->skb;
1316 desc_info->skb = NULL;
1317
1318 list_add_tail(&desc_info->list, used_list);
1319
1320 rxcb = ATH12K_SKB_RXCB(msdu);
1321 dma_unmap_single(dp->dev, rxcb->paddr,
1322 msdu->len + skb_tailroom(msdu),
1323 DMA_FROM_DEVICE);
1324
1325 if (drop) {
1326 dev_kfree_skb_any(msdu);
1327 return 0;
1328 }
1329
1330 rcu_read_lock();
1331 if (!rcu_dereference(ar->ab->pdevs_active[ar->pdev_idx])) {
1332 dev_kfree_skb_any(msdu);
1333 goto exit;
1334 }
1335
1336 if (test_bit(ATH12K_FLAG_CAC_RUNNING, &ar->dev_flags)) {
1337 dev_kfree_skb_any(msdu);
1338 goto exit;
1339 }
1340
1341 rx_desc = (struct hal_rx_desc *)msdu->data;
1342 ath12k_dp_extract_rx_desc_data(hal, &rx_info, rx_desc, rx_desc);
1343
1344 msdu_len = rx_info.msdu_len;
1345 if ((msdu_len + hal_rx_desc_sz) > DP_RX_BUFFER_SIZE) {
1346 ath12k_warn(dp->ab, "invalid msdu leng %u", msdu_len);
1347 ath12k_dbg_dump(dp->ab, ATH12K_DBG_DATA, NULL, "", rx_desc,
1348 sizeof(*rx_desc));
1349 dev_kfree_skb_any(msdu);
1350 goto exit;
1351 }
1352
1353 skb_put(msdu, hal_rx_desc_sz + msdu_len);
1354
1355 if (ath12k_wifi7_dp_rx_frag_h_mpdu(dp_pdev, msdu, desc, &rx_info)) {
1356 dev_kfree_skb_any(msdu);
1357 ath12k_wifi7_dp_rx_link_desc_return(dp, &desc->buf_addr_info,
1358 HAL_WBM_REL_BM_ACT_PUT_IN_IDLE);
1359 }
1360 exit:
1361 rcu_read_unlock();
1362 return 0;
1363 }
1364
ath12k_dp_h_msdu_buffer_type(struct ath12k_dp * dp,struct list_head * list,struct hal_reo_dest_ring * desc)1365 static int ath12k_dp_h_msdu_buffer_type(struct ath12k_dp *dp,
1366 struct list_head *list,
1367 struct hal_reo_dest_ring *desc)
1368 {
1369 struct ath12k_rx_desc_info *desc_info;
1370 struct ath12k_skb_rxcb *rxcb;
1371 struct sk_buff *msdu;
1372 u64 desc_va;
1373
1374 dp->device_stats.reo_excep_msdu_buf_type++;
1375
1376 desc_va = (u64)le32_to_cpu(desc->buf_va_hi) << 32 |
1377 le32_to_cpu(desc->buf_va_lo);
1378 desc_info = (struct ath12k_rx_desc_info *)(uintptr_t)desc_va;
1379 if (!desc_info) {
1380 u32 cookie;
1381
1382 cookie = le32_get_bits(desc->buf_addr_info.info1,
1383 BUFFER_ADDR_INFO1_SW_COOKIE);
1384 desc_info = ath12k_dp_get_rx_desc(dp, cookie);
1385 if (!desc_info) {
1386 ath12k_warn(dp->ab, "Invalid cookie in manual descriptor retrieval: 0x%x\n",
1387 cookie);
1388 return -EINVAL;
1389 }
1390 }
1391
1392 if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC) {
1393 ath12k_warn(dp->ab, "rx exception, magic check failed with value: %u\n",
1394 desc_info->magic);
1395 return -EINVAL;
1396 }
1397
1398 msdu = desc_info->skb;
1399 desc_info->skb = NULL;
1400 list_add_tail(&desc_info->list, list);
1401 rxcb = ATH12K_SKB_RXCB(msdu);
1402 dma_unmap_single(dp->dev, rxcb->paddr, msdu->len + skb_tailroom(msdu),
1403 DMA_FROM_DEVICE);
1404 dev_kfree_skb_any(msdu);
1405
1406 return 0;
1407 }
1408
ath12k_wifi7_dp_rx_process_err(struct ath12k_dp * dp,struct napi_struct * napi,int budget)1409 int ath12k_wifi7_dp_rx_process_err(struct ath12k_dp *dp, struct napi_struct *napi,
1410 int budget)
1411 {
1412 struct ath12k_base *ab = dp->ab;
1413 struct ath12k_hal *hal = dp->hal;
1414 struct ath12k_hw_group *ag = dp->ag;
1415 struct ath12k_dp_hw_group *dp_hw_grp = &ag->dp_hw_grp;
1416 struct ath12k_dp *partner_dp;
1417 struct list_head rx_desc_used_list[ATH12K_MAX_DEVICES];
1418 u32 msdu_cookies[HAL_NUM_RX_MSDUS_PER_LINK_DESC];
1419 int num_buffs_reaped[ATH12K_MAX_DEVICES] = {};
1420 struct dp_link_desc_bank *link_desc_banks;
1421 enum hal_rx_buf_return_buf_manager rbm;
1422 struct hal_rx_msdu_link *link_desc_va;
1423 int tot_n_bufs_reaped, quota, ret, i;
1424 struct hal_reo_dest_ring *reo_desc;
1425 struct dp_rxdma_ring *rx_ring;
1426 struct dp_srng *reo_except;
1427 struct ath12k_hw_link *hw_links = ag->hw_links;
1428 struct ath12k_pdev_dp *dp_pdev;
1429 u8 hw_link_id, device_id;
1430 u32 desc_bank, num_msdus;
1431 struct hal_srng *srng;
1432 dma_addr_t paddr;
1433 bool is_frag;
1434 bool drop;
1435 int pdev_idx;
1436 struct list_head *used_list;
1437 enum hal_wbm_rel_bm_act act;
1438
1439 tot_n_bufs_reaped = 0;
1440 quota = budget;
1441
1442 for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++)
1443 INIT_LIST_HEAD(&rx_desc_used_list[device_id]);
1444
1445 reo_except = &dp->reo_except_ring;
1446
1447 srng = &hal->srng_list[reo_except->ring_id];
1448
1449 spin_lock_bh(&srng->lock);
1450
1451 ath12k_hal_srng_access_begin(ab, srng);
1452
1453 while (budget &&
1454 (reo_desc = ath12k_hal_srng_dst_get_next_entry(ab, srng))) {
1455 drop = false;
1456 dp->device_stats.err_ring_pkts++;
1457
1458 hw_link_id = le32_get_bits(reo_desc->info0,
1459 HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
1460 device_id = hw_links[hw_link_id].device_id;
1461 partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
1462
1463 /* Below case is added to handle data packet from un-associated clients.
1464 * As it is expected that AST lookup will fail for
1465 * un-associated station's data packets.
1466 */
1467 if (le32_get_bits(reo_desc->info0, HAL_REO_DEST_RING_INFO0_BUFFER_TYPE) ==
1468 HAL_REO_DEST_RING_BUFFER_TYPE_MSDU) {
1469 if (!ath12k_dp_h_msdu_buffer_type(partner_dp,
1470 &rx_desc_used_list[device_id],
1471 reo_desc)) {
1472 num_buffs_reaped[device_id]++;
1473 tot_n_bufs_reaped++;
1474 }
1475 goto next_desc;
1476 }
1477
1478 ret = ath12k_wifi7_hal_desc_reo_parse_err(dp, reo_desc, &paddr,
1479 &desc_bank);
1480 if (ret) {
1481 ath12k_warn(ab, "failed to parse error reo desc %d\n",
1482 ret);
1483 continue;
1484 }
1485
1486 pdev_idx = ath12k_hw_mac_id_to_pdev_id(partner_dp->hw_params,
1487 hw_links[hw_link_id].pdev_idx);
1488
1489 link_desc_banks = partner_dp->link_desc_banks;
1490 link_desc_va = link_desc_banks[desc_bank].vaddr +
1491 (paddr - link_desc_banks[desc_bank].paddr);
1492 ath12k_wifi7_hal_rx_msdu_link_info_get(link_desc_va, &num_msdus,
1493 msdu_cookies, &rbm);
1494 if (rbm != partner_dp->idle_link_rbm &&
1495 rbm != HAL_RX_BUF_RBM_SW3_BM &&
1496 rbm != partner_dp->hal->hal_params->rx_buf_rbm) {
1497 act = HAL_WBM_REL_BM_ACT_REL_MSDU;
1498 dp->device_stats.invalid_rbm++;
1499 ath12k_warn(ab, "invalid return buffer manager %d\n", rbm);
1500 ath12k_wifi7_dp_rx_link_desc_return(partner_dp,
1501 &reo_desc->buf_addr_info,
1502 act);
1503 continue;
1504 }
1505
1506 is_frag = !!(le32_to_cpu(reo_desc->rx_mpdu_info.info0) &
1507 RX_MPDU_DESC_INFO0_FRAG_FLAG);
1508
1509 /* Process only rx fragments with one msdu per link desc below, and drop
1510 * msdu's indicated due to error reasons.
1511 * Dynamic fragmentation not supported in Multi-link client, so drop the
1512 * partner device buffers.
1513 */
1514 if (!is_frag || num_msdus > 1 ||
1515 partner_dp->device_id != dp->device_id) {
1516 drop = true;
1517 act = HAL_WBM_REL_BM_ACT_PUT_IN_IDLE;
1518
1519 /* Return the link desc back to wbm idle list */
1520 ath12k_wifi7_dp_rx_link_desc_return(partner_dp,
1521 &reo_desc->buf_addr_info,
1522 act);
1523 }
1524
1525 rcu_read_lock();
1526
1527 dp_pdev = ath12k_dp_to_pdev_dp(dp, pdev_idx);
1528 if (!dp_pdev) {
1529 rcu_read_unlock();
1530 continue;
1531 }
1532
1533 for (i = 0; i < num_msdus; i++) {
1534 used_list = &rx_desc_used_list[device_id];
1535
1536 if (!ath12k_wifi7_dp_process_rx_err_buf(dp_pdev, reo_desc,
1537 used_list,
1538 drop,
1539 msdu_cookies[i])) {
1540 num_buffs_reaped[device_id]++;
1541 tot_n_bufs_reaped++;
1542 }
1543 }
1544
1545 rcu_read_unlock();
1546
1547 next_desc:
1548 if (tot_n_bufs_reaped >= quota) {
1549 tot_n_bufs_reaped = quota;
1550 goto exit;
1551 }
1552
1553 budget = quota - tot_n_bufs_reaped;
1554 }
1555
1556 exit:
1557 ath12k_hal_srng_access_end(ab, srng);
1558
1559 spin_unlock_bh(&srng->lock);
1560
1561 for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++) {
1562 if (!num_buffs_reaped[device_id])
1563 continue;
1564
1565 partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
1566 rx_ring = &partner_dp->rx_refill_buf_ring;
1567
1568 ath12k_dp_rx_bufs_replenish(partner_dp, rx_ring,
1569 &rx_desc_used_list[device_id],
1570 num_buffs_reaped[device_id]);
1571 }
1572
1573 return tot_n_bufs_reaped;
1574 }
1575
1576 static void
ath12k_wifi7_dp_rx_null_q_desc_sg_drop(struct ath12k_dp * dp,int msdu_len,struct sk_buff_head * msdu_list)1577 ath12k_wifi7_dp_rx_null_q_desc_sg_drop(struct ath12k_dp *dp, int msdu_len,
1578 struct sk_buff_head *msdu_list)
1579 {
1580 struct sk_buff *skb, *tmp;
1581 struct ath12k_skb_rxcb *rxcb;
1582 int n_buffs;
1583
1584 n_buffs = DIV_ROUND_UP(msdu_len,
1585 (DP_RX_BUFFER_SIZE - dp->ab->hal.hal_desc_sz));
1586
1587 skb_queue_walk_safe(msdu_list, skb, tmp) {
1588 rxcb = ATH12K_SKB_RXCB(skb);
1589 if (rxcb->err_rel_src == HAL_WBM_REL_SRC_MODULE_REO &&
1590 rxcb->err_code == HAL_REO_DEST_RING_ERROR_CODE_DESC_ADDR_ZERO) {
1591 if (!n_buffs)
1592 break;
1593 __skb_unlink(skb, msdu_list);
1594 dev_kfree_skb_any(skb);
1595 n_buffs--;
1596 }
1597 }
1598 }
1599
ath12k_wifi7_dp_rx_h_null_q_desc(struct ath12k_pdev_dp * dp_pdev,struct sk_buff * msdu,struct hal_rx_desc_data * rx_info,struct sk_buff_head * msdu_list)1600 static int ath12k_wifi7_dp_rx_h_null_q_desc(struct ath12k_pdev_dp *dp_pdev,
1601 struct sk_buff *msdu,
1602 struct hal_rx_desc_data *rx_info,
1603 struct sk_buff_head *msdu_list)
1604 {
1605 struct ath12k_dp *dp = dp_pdev->dp;
1606 struct ath12k_base *ab = dp->ab;
1607 u16 msdu_len = rx_info->msdu_len;
1608 u8 l3pad_bytes = rx_info->l3_pad_bytes;
1609 struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
1610 u32 hal_rx_desc_sz = dp->ab->hal.hal_desc_sz;
1611 int ret;
1612
1613 if (!rxcb->is_frag && ((msdu_len + hal_rx_desc_sz) > DP_RX_BUFFER_SIZE)) {
1614 /* First buffer will be freed by the caller, so deduct it's length */
1615 msdu_len = msdu_len - (DP_RX_BUFFER_SIZE - hal_rx_desc_sz);
1616 ath12k_wifi7_dp_rx_null_q_desc_sg_drop(dp, msdu_len, msdu_list);
1617 return -EINVAL;
1618 }
1619
1620 /* Even after cleaning up the sg buffers in the msdu list with above check
1621 * any msdu received with continuation flag needs to be dropped as invalid.
1622 * This protects against some random err frame with continuation flag.
1623 */
1624 if (rxcb->is_continuation)
1625 return -EINVAL;
1626
1627 if (!rx_info->msdu_done) {
1628 ath12k_warn(ab,
1629 "msdu_done bit not set in null_q_des processing\n");
1630 __skb_queue_purge(msdu_list);
1631 return -EIO;
1632 }
1633
1634 /* Handle NULL queue descriptor violations arising out a missing
1635 * REO queue for a given peer or a given TID. This typically
1636 * may happen if a packet is received on a QOS enabled TID before the
1637 * ADDBA negotiation for that TID, when the TID queue is setup. Or
1638 * it may also happen for MC/BC frames if they are not routed to the
1639 * non-QOS TID queue, in the absence of any other default TID queue.
1640 * This error can show up both in a REO destination or WBM release ring.
1641 */
1642
1643 if (rxcb->is_frag) {
1644 skb_pull(msdu, hal_rx_desc_sz);
1645 } else {
1646 if ((hal_rx_desc_sz + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE)
1647 return -EINVAL;
1648
1649 skb_put(msdu, hal_rx_desc_sz + l3pad_bytes + msdu_len);
1650 skb_pull(msdu, hal_rx_desc_sz + l3pad_bytes);
1651 }
1652 if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu, rx_info)))
1653 return -EINVAL;
1654
1655 ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
1656 ret = ath12k_wifi7_dp_rx_h_mpdu(dp_pdev, msdu, rx_info);
1657 if (ret)
1658 return ret;
1659
1660 rxcb->tid = rx_info->tid;
1661
1662 /* Please note that caller will having the access to msdu and completing
1663 * rx with mac80211. Need not worry about cleaning up amsdu_list.
1664 */
1665
1666 return 0;
1667 }
1668
ath12k_wifi7_dp_rx_h_tkip_mic_err(struct ath12k_pdev_dp * dp_pdev,struct sk_buff * msdu,struct hal_rx_desc_data * rx_info)1669 static bool ath12k_wifi7_dp_rx_h_tkip_mic_err(struct ath12k_pdev_dp *dp_pdev,
1670 struct sk_buff *msdu,
1671 struct hal_rx_desc_data *rx_info)
1672 {
1673 struct ath12k_dp *dp = dp_pdev->dp;
1674 struct ath12k_base *ab = dp->ab;
1675 u16 msdu_len = rx_info->msdu_len;
1676 struct hal_rx_desc *desc = (struct hal_rx_desc *)msdu->data;
1677 u8 l3pad_bytes = rx_info->l3_pad_bytes;
1678 struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
1679 u32 hal_rx_desc_sz = ab->hal.hal_desc_sz;
1680
1681 rxcb->is_first_msdu = rx_info->is_first_msdu;
1682 rxcb->is_last_msdu = rx_info->is_last_msdu;
1683
1684 if ((hal_rx_desc_sz + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE) {
1685 ath12k_dbg(ab, ATH12K_DBG_DATA,
1686 "invalid msdu len in tkip mic err %u\n", msdu_len);
1687 ath12k_dbg_dump(ab, ATH12K_DBG_DATA, NULL, "", desc,
1688 sizeof(*desc));
1689 return true;
1690 }
1691
1692 skb_put(msdu, hal_rx_desc_sz + l3pad_bytes + msdu_len);
1693 skb_pull(msdu, hal_rx_desc_sz + l3pad_bytes);
1694
1695 if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu, rx_info)))
1696 return true;
1697
1698 ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
1699
1700 rx_info->rx_status->flag |= (RX_FLAG_MMIC_STRIPPED | RX_FLAG_MMIC_ERROR |
1701 RX_FLAG_DECRYPTED);
1702
1703 ath12k_dp_rx_h_undecap(dp_pdev, msdu, HAL_ENCRYPT_TYPE_TKIP_MIC, false,
1704 rx_info, NULL);
1705 return false;
1706 }
1707
ath12k_wifi7_dp_rx_h_unauth_wds_err(struct ath12k_pdev_dp * dp_pdev,struct sk_buff * msdu,struct hal_rx_desc_data * rx_info)1708 static bool ath12k_wifi7_dp_rx_h_unauth_wds_err(struct ath12k_pdev_dp *dp_pdev,
1709 struct sk_buff *msdu,
1710 struct hal_rx_desc_data *rx_info)
1711 {
1712 struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
1713 struct ath12k_dp *dp = dp_pdev->dp;
1714 u32 hdr_len, hal_rx_desc_sz = dp->ab->hal.hal_desc_sz;
1715 u8 l3pad_bytes = rx_info->l3_pad_bytes;
1716 struct ath12k_dp_rx_rfc1042_hdr *llc;
1717 u16 msdu_len = rx_info->msdu_len;
1718 struct ath12k_dp_peer *peer;
1719 struct ieee80211_hdr *hdr;
1720 int ret;
1721
1722 guard(rcu)();
1723 peer = ath12k_dp_peer_find_by_peerid(dp_pdev, rxcb->peer_id);
1724 if (!peer) {
1725 ath12k_dbg(dp->ab, ATH12K_DBG_DATA,
1726 "failed to find the peer to process unauth wds err handling peer_id %d\n",
1727 rxcb->peer_id);
1728 return true;
1729 }
1730
1731 if ((hal_rx_desc_sz + l3pad_bytes + msdu_len) > DP_RX_BUFFER_SIZE)
1732 return true;
1733
1734 skb_put(msdu, hal_rx_desc_sz + l3pad_bytes + msdu_len);
1735 skb_pull(msdu, hal_rx_desc_sz + l3pad_bytes);
1736
1737 if (unlikely(!ath12k_dp_rx_check_nwifi_hdr_len_valid(dp, msdu,
1738 rx_info)))
1739 return true;
1740
1741 ath12k_dp_rx_h_ppdu(dp_pdev, rx_info);
1742
1743 ret = ath12k_wifi7_dp_rx_h_mpdu(dp_pdev, msdu, rx_info);
1744 if (ret)
1745 return true;
1746
1747 rxcb->tid = rx_info->tid;
1748
1749 hdr = (struct ieee80211_hdr *)msdu->data;
1750 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1751 llc = (struct ath12k_dp_rx_rfc1042_hdr *)(msdu->data + hdr_len);
1752 if (llc->snap_type != cpu_to_be16(ETH_P_PAE))
1753 return true;
1754
1755 return false;
1756 }
1757
ath12k_wifi7_dp_rx_h_rxdma_err(struct ath12k_pdev_dp * dp_pdev,struct sk_buff * msdu,struct hal_rx_desc_data * rx_info)1758 static bool ath12k_wifi7_dp_rx_h_rxdma_err(struct ath12k_pdev_dp *dp_pdev,
1759 struct sk_buff *msdu,
1760 struct hal_rx_desc_data *rx_info)
1761 {
1762 struct ath12k_dp *dp = dp_pdev->dp;
1763 struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
1764 bool drop = false;
1765
1766 dp->device_stats.rxdma_error[rxcb->err_code]++;
1767
1768 switch (rxcb->err_code) {
1769 case HAL_REO_ENTR_RING_RXDMA_ECODE_UNAUTH_WDS_ERR:
1770 drop = ath12k_wifi7_dp_rx_h_unauth_wds_err(dp_pdev, msdu, rx_info);
1771 break;
1772 case HAL_REO_ENTR_RING_RXDMA_ECODE_DECRYPT_ERR:
1773 case HAL_REO_ENTR_RING_RXDMA_ECODE_TKIP_MIC_ERR:
1774 if (rx_info->err_bitmap & HAL_RX_MPDU_ERR_TKIP_MIC) {
1775 drop = ath12k_wifi7_dp_rx_h_tkip_mic_err(dp_pdev, msdu, rx_info);
1776 break;
1777 }
1778 fallthrough;
1779 default:
1780 /* TODO: Review other rxdma error code to check if anything is
1781 * worth reporting to mac80211
1782 */
1783 drop = true;
1784 break;
1785 }
1786
1787 return drop;
1788 }
1789
ath12k_wifi7_dp_rx_h_reo_err(struct ath12k_pdev_dp * dp_pdev,struct sk_buff * msdu,struct hal_rx_desc_data * rx_info,struct sk_buff_head * msdu_list)1790 static bool ath12k_wifi7_dp_rx_h_reo_err(struct ath12k_pdev_dp *dp_pdev,
1791 struct sk_buff *msdu,
1792 struct hal_rx_desc_data *rx_info,
1793 struct sk_buff_head *msdu_list)
1794 {
1795 struct ath12k_dp *dp = dp_pdev->dp;
1796 struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
1797 bool drop = false;
1798
1799 dp->device_stats.reo_error[rxcb->err_code]++;
1800
1801 switch (rxcb->err_code) {
1802 case HAL_REO_DEST_RING_ERROR_CODE_DESC_ADDR_ZERO:
1803 if (ath12k_wifi7_dp_rx_h_null_q_desc(dp_pdev, msdu, rx_info, msdu_list))
1804 drop = true;
1805 break;
1806 case HAL_REO_DEST_RING_ERROR_CODE_PN_CHECK_FAILED:
1807 /* TODO: Do not drop PN failed packets in the driver;
1808 * instead, it is good to drop such packets in mac80211
1809 * after incrementing the replay counters.
1810 */
1811 fallthrough;
1812 default:
1813 /* TODO: Review other errors and process them to mac80211
1814 * as appropriate.
1815 */
1816 drop = true;
1817 break;
1818 }
1819
1820 return drop;
1821 }
1822
ath12k_wifi7_dp_rx_wbm_err(struct ath12k_pdev_dp * dp_pdev,struct napi_struct * napi,struct sk_buff * msdu,struct sk_buff_head * msdu_list)1823 static void ath12k_wifi7_dp_rx_wbm_err(struct ath12k_pdev_dp *dp_pdev,
1824 struct napi_struct *napi,
1825 struct sk_buff *msdu,
1826 struct sk_buff_head *msdu_list)
1827 {
1828 struct ath12k_dp *dp = dp_pdev->dp;
1829 struct hal_rx_desc *rx_desc = (struct hal_rx_desc *)msdu->data;
1830 struct ath12k_skb_rxcb *rxcb = ATH12K_SKB_RXCB(msdu);
1831 struct ieee80211_rx_status rxs = {};
1832 struct hal_rx_desc_data rx_info;
1833 bool drop = true;
1834
1835 rx_info.addr2_present = false;
1836 rx_info.rx_status = &rxs;
1837
1838 ath12k_dp_extract_rx_desc_data(dp->hal, &rx_info, rx_desc, rx_desc);
1839
1840 switch (rxcb->err_rel_src) {
1841 case HAL_WBM_REL_SRC_MODULE_REO:
1842 drop = ath12k_wifi7_dp_rx_h_reo_err(dp_pdev, msdu, &rx_info, msdu_list);
1843 break;
1844 case HAL_WBM_REL_SRC_MODULE_RXDMA:
1845 drop = ath12k_wifi7_dp_rx_h_rxdma_err(dp_pdev, msdu, &rx_info);
1846 break;
1847 default:
1848 /* msdu will get freed */
1849 break;
1850 }
1851
1852 if (drop) {
1853 dev_kfree_skb_any(msdu);
1854 return;
1855 }
1856
1857 rx_info.rx_status->flag |= RX_FLAG_SKIP_MONITOR;
1858
1859 ath12k_dp_rx_deliver_msdu(dp_pdev, napi, msdu, &rx_info);
1860 }
1861
ath12k_wifi7_dp_setup_pn_check_reo_cmd(struct ath12k_hal_reo_cmd * cmd,struct ath12k_dp_rx_tid * rx_tid,u32 cipher,enum set_key_cmd key_cmd)1862 void ath12k_wifi7_dp_setup_pn_check_reo_cmd(struct ath12k_hal_reo_cmd *cmd,
1863 struct ath12k_dp_rx_tid *rx_tid,
1864 u32 cipher, enum set_key_cmd key_cmd)
1865 {
1866 cmd->flag = HAL_REO_CMD_FLG_NEED_STATUS;
1867 cmd->upd0 = HAL_REO_CMD_UPD0_PN |
1868 HAL_REO_CMD_UPD0_PN_SIZE |
1869 HAL_REO_CMD_UPD0_PN_VALID |
1870 HAL_REO_CMD_UPD0_PN_CHECK |
1871 HAL_REO_CMD_UPD0_SVLD;
1872
1873 switch (cipher) {
1874 case WLAN_CIPHER_SUITE_TKIP:
1875 case WLAN_CIPHER_SUITE_CCMP:
1876 case WLAN_CIPHER_SUITE_CCMP_256:
1877 case WLAN_CIPHER_SUITE_GCMP:
1878 case WLAN_CIPHER_SUITE_GCMP_256:
1879 if (key_cmd == SET_KEY) {
1880 cmd->upd1 |= HAL_REO_CMD_UPD1_PN_CHECK;
1881 cmd->pn_size = 48;
1882 }
1883 break;
1884 default:
1885 break;
1886 }
1887
1888 cmd->addr_lo = lower_32_bits(rx_tid->qbuf.paddr_aligned);
1889 cmd->addr_hi = upper_32_bits(rx_tid->qbuf.paddr_aligned);
1890 }
1891
ath12k_wifi7_dp_rx_process_wbm_err(struct ath12k_dp * dp,struct napi_struct * napi,int budget)1892 int ath12k_wifi7_dp_rx_process_wbm_err(struct ath12k_dp *dp,
1893 struct napi_struct *napi, int budget)
1894 {
1895 struct list_head rx_desc_used_list[ATH12K_MAX_DEVICES];
1896 struct ath12k_base *ab = dp->ab;
1897 struct ath12k_hal *hal = dp->hal;
1898 struct ath12k *ar;
1899 struct ath12k_pdev_dp *dp_pdev;
1900 struct ath12k_hw_group *ag = dp->ag;
1901 struct ath12k_dp_hw_group *dp_hw_grp = &ag->dp_hw_grp;
1902 struct ath12k_dp *partner_dp;
1903 struct dp_rxdma_ring *rx_ring;
1904 struct hal_rx_wbm_rel_info err_info;
1905 struct hal_srng *srng;
1906 struct sk_buff *msdu;
1907 struct sk_buff_head msdu_list, scatter_msdu_list;
1908 struct ath12k_skb_rxcb *rxcb;
1909 void *rx_desc;
1910 int num_buffs_reaped[ATH12K_MAX_DEVICES] = {};
1911 int total_num_buffs_reaped = 0;
1912 struct ath12k_rx_desc_info *desc_info;
1913 struct ath12k_device_dp_stats *device_stats = &dp->device_stats;
1914 struct ath12k_hw_link *hw_links = ag->hw_links;
1915 u8 hw_link_id, device_id;
1916 int ret, pdev_idx;
1917 struct hal_rx_desc *msdu_data;
1918
1919 __skb_queue_head_init(&msdu_list);
1920 __skb_queue_head_init(&scatter_msdu_list);
1921
1922 for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++)
1923 INIT_LIST_HEAD(&rx_desc_used_list[device_id]);
1924
1925 srng = &hal->srng_list[dp->rx_rel_ring.ring_id];
1926 spin_lock_bh(&srng->lock);
1927
1928 ath12k_hal_srng_access_begin(ab, srng);
1929
1930 while (budget) {
1931 rx_desc = ath12k_hal_srng_dst_get_next_entry(ab, srng);
1932 if (!rx_desc)
1933 break;
1934
1935 ret = ath12k_wifi7_hal_wbm_desc_parse_err(dp, rx_desc,
1936 &err_info);
1937 if (ret) {
1938 ath12k_warn(ab, "failed to parse rx error in wbm_rel ring desc %d\n",
1939 ret);
1940 continue;
1941 }
1942
1943 desc_info = err_info.rx_desc;
1944
1945 /* retry manual desc retrieval if hw cc is not done */
1946 if (!desc_info) {
1947 desc_info = ath12k_dp_get_rx_desc(dp, err_info.cookie);
1948 if (!desc_info) {
1949 ath12k_warn(ab, "Invalid cookie in DP WBM rx error descriptor retrieval: 0x%x\n",
1950 err_info.cookie);
1951 continue;
1952 }
1953 }
1954
1955 if (desc_info->magic != ATH12K_DP_RX_DESC_MAGIC)
1956 ath12k_warn(ab, "WBM RX err, Check HW CC implementation");
1957
1958 msdu = desc_info->skb;
1959 desc_info->skb = NULL;
1960
1961 device_id = desc_info->device_id;
1962 partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
1963 if (unlikely(!partner_dp)) {
1964 dev_kfree_skb_any(msdu);
1965
1966 /* In any case continuation bit is set
1967 * in the previous record, cleanup scatter_msdu_list
1968 */
1969 ath12k_dp_clean_up_skb_list(&scatter_msdu_list);
1970 continue;
1971 }
1972
1973 list_add_tail(&desc_info->list, &rx_desc_used_list[device_id]);
1974
1975 rxcb = ATH12K_SKB_RXCB(msdu);
1976 dma_unmap_single(partner_dp->dev, rxcb->paddr,
1977 msdu->len + skb_tailroom(msdu),
1978 DMA_FROM_DEVICE);
1979
1980 num_buffs_reaped[device_id]++;
1981 total_num_buffs_reaped++;
1982
1983 if (!err_info.continuation)
1984 budget--;
1985
1986 if (err_info.push_reason !=
1987 HAL_REO_DEST_RING_PUSH_REASON_ERR_DETECTED) {
1988 dev_kfree_skb_any(msdu);
1989 continue;
1990 }
1991
1992 msdu_data = (struct hal_rx_desc *)msdu->data;
1993 rxcb->err_rel_src = err_info.err_rel_src;
1994 rxcb->err_code = err_info.err_code;
1995 rxcb->is_first_msdu = err_info.first_msdu;
1996 rxcb->is_last_msdu = err_info.last_msdu;
1997 rxcb->is_continuation = err_info.continuation;
1998 rxcb->rx_desc = msdu_data;
1999 rxcb->peer_id = ath12k_wifi7_dp_rx_get_peer_id(dp, dp->peer_metadata_ver,
2000 err_info.peer_metadata);
2001
2002 if (err_info.continuation) {
2003 __skb_queue_tail(&scatter_msdu_list, msdu);
2004 continue;
2005 }
2006
2007 hw_link_id = ath12k_dp_rx_get_msdu_src_link(partner_dp->hal,
2008 msdu_data);
2009 if (hw_link_id >= ATH12K_GROUP_MAX_RADIO) {
2010 dev_kfree_skb_any(msdu);
2011
2012 /* In any case continuation bit is set
2013 * in the previous record, cleanup scatter_msdu_list
2014 */
2015 ath12k_dp_clean_up_skb_list(&scatter_msdu_list);
2016 continue;
2017 }
2018
2019 if (!skb_queue_empty(&scatter_msdu_list)) {
2020 struct sk_buff *msdu;
2021
2022 skb_queue_walk(&scatter_msdu_list, msdu) {
2023 rxcb = ATH12K_SKB_RXCB(msdu);
2024 rxcb->hw_link_id = hw_link_id;
2025 }
2026
2027 skb_queue_splice_tail_init(&scatter_msdu_list,
2028 &msdu_list);
2029 }
2030
2031 rxcb = ATH12K_SKB_RXCB(msdu);
2032 rxcb->hw_link_id = hw_link_id;
2033 __skb_queue_tail(&msdu_list, msdu);
2034 }
2035
2036 /* In any case continuation bit is set in the
2037 * last record, cleanup scatter_msdu_list
2038 */
2039 ath12k_dp_clean_up_skb_list(&scatter_msdu_list);
2040
2041 ath12k_hal_srng_access_end(ab, srng);
2042
2043 spin_unlock_bh(&srng->lock);
2044
2045 if (!total_num_buffs_reaped)
2046 goto done;
2047
2048 for (device_id = 0; device_id < ATH12K_MAX_DEVICES; device_id++) {
2049 if (!num_buffs_reaped[device_id])
2050 continue;
2051
2052 partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
2053 rx_ring = &partner_dp->rx_refill_buf_ring;
2054
2055 ath12k_dp_rx_bufs_replenish(dp, rx_ring,
2056 &rx_desc_used_list[device_id],
2057 num_buffs_reaped[device_id]);
2058 }
2059
2060 rcu_read_lock();
2061 while ((msdu = __skb_dequeue(&msdu_list))) {
2062 rxcb = ATH12K_SKB_RXCB(msdu);
2063 hw_link_id = rxcb->hw_link_id;
2064
2065 device_id = hw_links[hw_link_id].device_id;
2066 partner_dp = ath12k_dp_hw_grp_to_dp(dp_hw_grp, device_id);
2067 if (unlikely(!partner_dp)) {
2068 ath12k_dbg(ab, ATH12K_DBG_DATA,
2069 "Unable to process WBM error msdu due to invalid hw link id %d device id %d\n",
2070 hw_link_id, device_id);
2071 dev_kfree_skb_any(msdu);
2072 continue;
2073 }
2074
2075 pdev_idx = ath12k_hw_mac_id_to_pdev_id(partner_dp->hw_params,
2076 hw_links[hw_link_id].pdev_idx);
2077
2078 dp_pdev = ath12k_dp_to_pdev_dp(partner_dp, pdev_idx);
2079 if (!dp_pdev) {
2080 dev_kfree_skb_any(msdu);
2081 continue;
2082 }
2083 ar = ath12k_pdev_dp_to_ar(dp_pdev);
2084
2085 if (!ar || !rcu_dereference(ar->ab->pdevs_active[pdev_idx])) {
2086 dev_kfree_skb_any(msdu);
2087 continue;
2088 }
2089
2090 if (test_bit(ATH12K_FLAG_CAC_RUNNING, &ar->dev_flags)) {
2091 dev_kfree_skb_any(msdu);
2092 continue;
2093 }
2094
2095 if (rxcb->err_rel_src < HAL_WBM_REL_SRC_MODULE_MAX) {
2096 device_id = dp_pdev->dp->device_id;
2097 device_stats->rx_wbm_rel_source[rxcb->err_rel_src][device_id]++;
2098 }
2099
2100 ath12k_wifi7_dp_rx_wbm_err(dp_pdev, napi, msdu, &msdu_list);
2101 }
2102 rcu_read_unlock();
2103 done:
2104 return total_num_buffs_reaped;
2105 }
2106
ath12k_dp_rxdma_ring_sel_config_qcn9274(struct ath12k_base * ab)2107 int ath12k_dp_rxdma_ring_sel_config_qcn9274(struct ath12k_base *ab)
2108 {
2109 struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
2110 struct htt_rx_ring_tlv_filter tlv_filter = {};
2111 u32 ring_id;
2112 int ret;
2113 u32 hal_rx_desc_sz = ab->hal.hal_desc_sz;
2114
2115 ring_id = dp->rx_refill_buf_ring.refill_buf_ring.ring_id;
2116
2117 tlv_filter.rx_filter = HTT_RX_TLV_FLAGS_RXDMA_RING;
2118 tlv_filter.pkt_filter_flags2 = HTT_RX_FP_CTRL_PKT_FILTER_TLV_FLAGS2_BAR;
2119 tlv_filter.pkt_filter_flags3 = HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_MCAST |
2120 HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_UCAST |
2121 HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_NULL_DATA;
2122 tlv_filter.offset_valid = true;
2123 tlv_filter.rx_packet_offset = hal_rx_desc_sz;
2124
2125 tlv_filter.rx_mpdu_start_offset =
2126 ath12k_hal_rx_desc_get_mpdu_start_offset_qcn9274();
2127 tlv_filter.rx_msdu_end_offset =
2128 ath12k_hal_rx_desc_get_msdu_end_offset_qcn9274();
2129
2130 tlv_filter.rx_mpdu_start_wmask = ath12k_hal_rx_mpdu_start_wmask_get_qcn9274();
2131 tlv_filter.rx_msdu_end_wmask = ath12k_hal_rx_msdu_end_wmask_get_qcn9274();
2132 ath12k_dbg(ab, ATH12K_DBG_DATA,
2133 "Configuring compact tlv masks rx_mpdu_start_wmask 0x%x rx_msdu_end_wmask 0x%x\n",
2134 tlv_filter.rx_mpdu_start_wmask, tlv_filter.rx_msdu_end_wmask);
2135
2136 ret = ath12k_dp_tx_htt_rx_filter_setup(ab, ring_id, 0,
2137 HAL_RXDMA_BUF,
2138 DP_RXDMA_REFILL_RING_SIZE,
2139 &tlv_filter);
2140
2141 return ret;
2142 }
2143
ath12k_dp_rxdma_ring_sel_config_wcn7850(struct ath12k_base * ab)2144 int ath12k_dp_rxdma_ring_sel_config_wcn7850(struct ath12k_base *ab)
2145 {
2146 struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
2147 struct htt_rx_ring_tlv_filter tlv_filter = {};
2148 u32 ring_id;
2149 int ret = 0;
2150 u32 hal_rx_desc_sz = ab->hal.hal_desc_sz;
2151 int i;
2152
2153 ring_id = dp->rx_refill_buf_ring.refill_buf_ring.ring_id;
2154
2155 tlv_filter.rx_filter = HTT_RX_TLV_FLAGS_RXDMA_RING;
2156 tlv_filter.pkt_filter_flags2 = HTT_RX_FP_CTRL_PKT_FILTER_TLV_FLAGS2_BAR;
2157 tlv_filter.pkt_filter_flags3 = HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_MCAST |
2158 HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_UCAST |
2159 HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_NULL_DATA;
2160 tlv_filter.offset_valid = true;
2161 tlv_filter.rx_packet_offset = hal_rx_desc_sz;
2162
2163 tlv_filter.rx_header_offset = offsetof(struct hal_rx_desc_wcn7850, pkt_hdr_tlv);
2164
2165 tlv_filter.rx_mpdu_start_offset =
2166 ath12k_hal_rx_desc_get_mpdu_start_offset_wcn7850();
2167 tlv_filter.rx_msdu_end_offset =
2168 ath12k_hal_rx_desc_get_msdu_end_offset_wcn7850();
2169
2170 /* TODO: Selectively subscribe to required qwords within msdu_end
2171 * and mpdu_start and setup the mask in below msg
2172 * and modify the rx_desc struct
2173 */
2174
2175 for (i = 0; i < ab->hw_params->num_rxdma_per_pdev; i++) {
2176 ring_id = dp->rx_mac_buf_ring[i].ring_id;
2177 ret = ath12k_dp_tx_htt_rx_filter_setup(ab, ring_id, i,
2178 HAL_RXDMA_BUF,
2179 DP_RXDMA_REFILL_RING_SIZE,
2180 &tlv_filter);
2181 }
2182
2183 return ret;
2184 }
2185
ath12k_dp_rxdma_ring_sel_config_qcc2072(struct ath12k_base * ab)2186 int ath12k_dp_rxdma_ring_sel_config_qcc2072(struct ath12k_base *ab)
2187 {
2188 struct ath12k_dp *dp = ath12k_ab_to_dp(ab);
2189 struct htt_rx_ring_tlv_filter tlv_filter = {};
2190 u32 ring_id;
2191 int ret = 0;
2192 u32 hal_rx_desc_sz = ab->hal.hal_desc_sz;
2193 int i;
2194
2195 ring_id = dp->rx_refill_buf_ring.refill_buf_ring.ring_id;
2196
2197 tlv_filter.rx_filter = HTT_RX_TLV_FLAGS_RXDMA_RING;
2198 tlv_filter.pkt_filter_flags2 = HTT_RX_FP_CTRL_PKT_FILTER_TLV_FLAGS2_BAR;
2199 tlv_filter.pkt_filter_flags3 = HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_MCAST |
2200 HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_UCAST |
2201 HTT_RX_FP_DATA_PKT_FILTER_TLV_FLASG3_NULL_DATA;
2202 tlv_filter.offset_valid = true;
2203 tlv_filter.rx_packet_offset = hal_rx_desc_sz;
2204
2205 tlv_filter.rx_header_offset = offsetof(struct hal_rx_desc_qcc2072, pkt_hdr_tlv);
2206
2207 tlv_filter.rx_mpdu_start_offset =
2208 ath12k_hal_rx_desc_get_mpdu_start_offset_qcc2072();
2209 tlv_filter.rx_msdu_end_offset =
2210 ath12k_hal_rx_desc_get_msdu_end_offset_qcc2072();
2211
2212 /*
2213 * TODO: Selectively subscribe to required qwords within msdu_end
2214 * and mpdu_start and setup the mask in below msg
2215 * and modify the rx_desc struct
2216 */
2217
2218 for (i = 0; i < ab->hw_params->num_rxdma_per_pdev; i++) {
2219 ring_id = dp->rx_mac_buf_ring[i].ring_id;
2220 ret = ath12k_dp_tx_htt_rx_filter_setup(ab, ring_id, i,
2221 HAL_RXDMA_BUF,
2222 DP_RXDMA_REFILL_RING_SIZE,
2223 &tlv_filter);
2224 }
2225
2226 return ret;
2227 }
2228
ath12k_wifi7_dp_rx_process_reo_status(struct ath12k_dp * dp)2229 void ath12k_wifi7_dp_rx_process_reo_status(struct ath12k_dp *dp)
2230 {
2231 struct ath12k_base *ab = dp->ab;
2232 struct ath12k_hal *hal = dp->hal;
2233 struct hal_srng *srng;
2234 struct ath12k_dp_rx_reo_cmd *cmd, *tmp;
2235 bool found = false;
2236 u16 tag;
2237 struct hal_reo_status reo_status;
2238 void *hdr, *desc;
2239
2240 srng = &hal->srng_list[dp->reo_status_ring.ring_id];
2241
2242 memset(&reo_status, 0, sizeof(reo_status));
2243
2244 spin_lock_bh(&srng->lock);
2245
2246 ath12k_hal_srng_access_begin(ab, srng);
2247
2248 while ((hdr = ath12k_hal_srng_dst_get_next_entry(ab, srng))) {
2249 tag = hal->ops->reo_status_dec_tlv_hdr(hdr, &desc);
2250
2251 switch (tag) {
2252 case HAL_REO_GET_QUEUE_STATS_STATUS:
2253 ath12k_wifi7_hal_reo_status_queue_stats(ab, desc,
2254 &reo_status);
2255 break;
2256 case HAL_REO_FLUSH_QUEUE_STATUS:
2257 ath12k_wifi7_hal_reo_flush_queue_status(ab, desc,
2258 &reo_status);
2259 break;
2260 case HAL_REO_FLUSH_CACHE_STATUS:
2261 ath12k_wifi7_hal_reo_flush_cache_status(ab, desc,
2262 &reo_status);
2263 break;
2264 case HAL_REO_UNBLOCK_CACHE_STATUS:
2265 ath12k_wifi7_hal_reo_unblk_cache_status(ab, desc,
2266 &reo_status);
2267 break;
2268 case HAL_REO_FLUSH_TIMEOUT_LIST_STATUS:
2269 ath12k_wifi7_hal_reo_flush_timeout_list_status(ab, desc,
2270 &reo_status);
2271 break;
2272 case HAL_REO_DESCRIPTOR_THRESHOLD_REACHED_STATUS:
2273 ath12k_wifi7_hal_reo_desc_thresh_reached_status(ab, desc,
2274 &reo_status);
2275 break;
2276 case HAL_REO_UPDATE_RX_REO_QUEUE_STATUS:
2277 ath12k_wifi7_hal_reo_update_rx_reo_queue_status(ab, desc,
2278 &reo_status);
2279 break;
2280 default:
2281 ath12k_warn(ab, "Unknown reo status type %d\n", tag);
2282 continue;
2283 }
2284
2285 spin_lock_bh(&dp->reo_cmd_lock);
2286 list_for_each_entry_safe(cmd, tmp, &dp->reo_cmd_list, list) {
2287 if (reo_status.uniform_hdr.cmd_num == cmd->cmd_num) {
2288 found = true;
2289 list_del(&cmd->list);
2290 break;
2291 }
2292 }
2293 spin_unlock_bh(&dp->reo_cmd_lock);
2294
2295 if (found) {
2296 cmd->handler(dp, (void *)&cmd->data,
2297 reo_status.uniform_hdr.cmd_status);
2298 kfree(cmd);
2299 }
2300
2301 found = false;
2302 }
2303
2304 ath12k_hal_srng_access_end(ab, srng);
2305
2306 spin_unlock_bh(&srng->lock);
2307 }
2308
2309 bool
ath12k_wifi7_dp_rxdesc_mpdu_valid(struct ath12k_base * ab,struct hal_rx_desc * rx_desc)2310 ath12k_wifi7_dp_rxdesc_mpdu_valid(struct ath12k_base *ab,
2311 struct hal_rx_desc *rx_desc)
2312 {
2313 u32 tlv_tag;
2314
2315 tlv_tag = ab->hal.ops->rx_desc_get_mpdu_start_tag(rx_desc);
2316
2317 return tlv_tag == HAL_RX_MPDU_START;
2318 }
2319
2320 void
ath12k_wifi7_dp_rx_set_link_id_qcn9274(struct ath12k_dp_peer * dp_peer,struct ath12k_skb_rxcb * rxcb,struct ieee80211_rx_status * status)2321 ath12k_wifi7_dp_rx_set_link_id_qcn9274(struct ath12k_dp_peer *dp_peer,
2322 struct ath12k_skb_rxcb *rxcb,
2323 struct ieee80211_rx_status *status)
2324 {
2325 status->link_valid = 1;
2326 status->link_id = dp_peer->hw_links[rxcb->hw_link_id];
2327 }
2328
2329 void
ath12k_wifi7_dp_rx_set_link_id_wcn7850(struct ath12k_dp_peer * dp_peer,struct ath12k_skb_rxcb * rxcb,struct ieee80211_rx_status * status)2330 ath12k_wifi7_dp_rx_set_link_id_wcn7850(struct ath12k_dp_peer *dp_peer,
2331 struct ath12k_skb_rxcb *rxcb,
2332 struct ieee80211_rx_status *status)
2333 {
2334 struct ath12k_dp_link_peer *link_peer;
2335 unsigned long links_map;
2336 int i;
2337
2338 RCU_LOCKDEP_WARN(!rcu_read_lock_held(),
2339 "ath12k set rx link id called without rcu lock");
2340
2341 links_map = READ_ONCE(dp_peer->link_peers_map);
2342 for_each_set_bit(i, &links_map, ATH12K_NUM_MAX_LINKS) {
2343 link_peer = rcu_dereference(dp_peer->link_peers[i]);
2344 if (link_peer && link_peer->peer_id == rxcb->peer_id) {
2345 status->link_valid = 1;
2346 status->link_id = link_peer->link_id;
2347 return;
2348 }
2349 }
2350 }
2351