xref: /wlan-driver/qca-wifi-host-cmn/dp/wifi3.0/rh/dp_rh_rx.c (revision 5113495b16420b49004c444715d2daae2066e7dc)
1 /*
2  * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
3  *
4  * Permission to use, copy, modify, and/or distribute this software for
5  * any purpose with or without fee is hereby granted, provided that the
6  * above copyright notice and this permission notice appear in all
7  * copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
10  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
11  * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
12  * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
13  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
14  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
15  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
16  * PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include "cdp_txrx_cmn_struct.h"
20 #include "hal_hw_headers.h"
21 #include "dp_types.h"
22 #include "dp_rx.h"
23 #include "dp_tx.h"
24 #include "dp_rx_defrag.h"
25 #include "dp_rh_rx.h"
26 #include "dp_rh_htt.h"
27 #include "dp_peer.h"
28 #include "hal_rx.h"
29 #include "hal_rh_rx.h"
30 #include "hal_api.h"
31 #include "hal_rh_api.h"
32 #include "qdf_nbuf.h"
33 #include "dp_internal.h"
34 #ifdef WIFI_MONITOR_SUPPORT
35 #include <dp_mon.h>
36 #endif
37 #ifdef FEATURE_WDS
38 #include "dp_txrx_wds.h"
39 #endif
40 #include "dp_hist.h"
41 #include "dp_rx_buffer_pool.h"
42 #include "dp_rh.h"
43 
dp_rx_get_ctx_id_frm_napiid(uint8_t napi_id)44 static inline uint8_t dp_rx_get_ctx_id_frm_napiid(uint8_t napi_id)
45 {
46 	/*
47 	 * This is NAPI to CE then to rx context id mapping
48 	 * example: CE1 is assigned with napi id 3(ce_id+1)
49 	 * CE1 maps to RX context id 0, so napi id 2 maps to
50 	 * RX context id 0, this need to optimized further.
51 	 */
52 	switch (napi_id) {
53 	case 2:
54 		return 0;
55 	case 11:
56 		return 1;
57 	case 12:
58 		return 2;
59 	default:
60 		dp_err("Invalid napi id: %u, this should not happen", napi_id);
61 		qdf_assert_always(0);
62 		break;
63 	}
64 	return 0;
65 }
66 
67 void
dp_rx_data_flush(void * data)68 dp_rx_data_flush(void *data)
69 {
70 	struct qca_napi_info *napi_info = (struct qca_napi_info *)data;
71 	uint8_t rx_ctx_id = dp_rx_get_ctx_id_frm_napiid(napi_info->id);
72 	struct dp_soc *soc = cds_get_context(QDF_MODULE_ID_SOC);
73 	struct dp_vdev *vdev;
74 	int i;
75 
76 	if (rx_ctx_id == 0 && soc->rx.flags.defrag_timeout_check) {
77 		uint32_t now_ms =
78 			qdf_system_ticks_to_msecs(qdf_system_ticks());
79 
80 		if (now_ms >= soc->rx.defrag.next_flush_ms)
81 			dp_rx_defrag_waitlist_flush(soc);
82 	}
83 
84 	/*Get first available vdev to flush all RX packets across soc*/
85 	for (i = 0; i < MAX_VDEV_CNT; i++) {
86 		vdev = dp_vdev_get_ref_by_id(soc, i, DP_MOD_ID_RX);
87 		if (vdev && vdev->osif_fisa_flush)
88 			vdev->osif_fisa_flush(soc, rx_ctx_id);
89 
90 		if (vdev && vdev->osif_gro_flush) {
91 			vdev->osif_gro_flush(vdev->osif_vdev,
92 					     rx_ctx_id);
93 			dp_vdev_unref_delete(soc, vdev, DP_MOD_ID_RX);
94 			return;
95 		}
96 		if (vdev)
97 			dp_vdev_unref_delete(soc, vdev, DP_MOD_ID_RX);
98 	}
99 }
100 
101 static inline
is_sa_da_idx_valid(uint32_t max_ast,qdf_nbuf_t nbuf,struct hal_rx_msdu_metadata msdu_info)102 bool is_sa_da_idx_valid(uint32_t max_ast,
103 			qdf_nbuf_t nbuf, struct hal_rx_msdu_metadata msdu_info)
104 {
105 	if ((qdf_nbuf_is_sa_valid(nbuf) && (msdu_info.sa_idx > max_ast)) ||
106 	    (!qdf_nbuf_is_da_mcbc(nbuf) && qdf_nbuf_is_da_valid(nbuf) &&
107 	     (msdu_info.da_idx > max_ast)))
108 		return false;
109 
110 	return true;
111 }
112 
113 #if defined(FEATURE_MCL_REPEATER) && defined(FEATURE_MEC)
114 /**
115  * dp_rx_mec_check_wrapper() - wrapper to dp_rx_mcast_echo_check
116  * @soc: core DP main context
117  * @txrx_peer: dp peer handler
118  * @rx_tlv_hdr: start of the rx TLV header
119  * @nbuf: pkt buffer
120  *
121  * Return: bool (true if it is a looped back pkt else false)
122  */
dp_rx_mec_check_wrapper(struct dp_soc * soc,struct dp_txrx_peer * txrx_peer,uint8_t * rx_tlv_hdr,qdf_nbuf_t nbuf)123 static inline bool dp_rx_mec_check_wrapper(struct dp_soc *soc,
124 					   struct dp_txrx_peer *txrx_peer,
125 					   uint8_t *rx_tlv_hdr,
126 					   qdf_nbuf_t nbuf)
127 {
128 	return dp_rx_mcast_echo_check(soc, txrx_peer, rx_tlv_hdr, nbuf);
129 }
130 #else
dp_rx_mec_check_wrapper(struct dp_soc * soc,struct dp_txrx_peer * txrx_peer,uint8_t * rx_tlv_hdr,qdf_nbuf_t nbuf)131 static inline bool dp_rx_mec_check_wrapper(struct dp_soc *soc,
132 					   struct dp_txrx_peer *txrx_peer,
133 					   uint8_t *rx_tlv_hdr,
134 					   qdf_nbuf_t nbuf)
135 {
136 	return false;
137 }
138 #endif
139 
140 static bool
dp_rx_intrabss_ucast_check_rh(struct dp_soc * soc,qdf_nbuf_t nbuf,struct dp_txrx_peer * ta_txrx_peer,struct hal_rx_msdu_metadata * msdu_metadata,uint8_t * p_tx_vdev_id)141 dp_rx_intrabss_ucast_check_rh(struct dp_soc *soc, qdf_nbuf_t nbuf,
142 			      struct dp_txrx_peer *ta_txrx_peer,
143 			      struct hal_rx_msdu_metadata *msdu_metadata,
144 			      uint8_t *p_tx_vdev_id)
145 {
146 	uint16_t da_peer_id;
147 	struct dp_txrx_peer *da_peer;
148 	struct dp_ast_entry *ast_entry;
149 	dp_txrx_ref_handle txrx_ref_handle = NULL;
150 
151 	if (!qdf_nbuf_is_da_valid(nbuf) || qdf_nbuf_is_da_mcbc(nbuf))
152 		return false;
153 
154 	ast_entry = soc->ast_table[msdu_metadata->da_idx];
155 	if (!ast_entry)
156 		return false;
157 
158 	if (ast_entry->type == CDP_TXRX_AST_TYPE_DA) {
159 		ast_entry->is_active = TRUE;
160 		return false;
161 	}
162 
163 	da_peer_id = ast_entry->peer_id;
164 	/* TA peer cannot be same as peer(DA) on which AST is present
165 	 * this indicates a change in topology and that AST entries
166 	 * are yet to be updated.
167 	 */
168 	if (da_peer_id == ta_txrx_peer->peer_id ||
169 	    da_peer_id == HTT_INVALID_PEER)
170 		return false;
171 
172 	da_peer = dp_txrx_peer_get_ref_by_id(soc, da_peer_id,
173 					     &txrx_ref_handle, DP_MOD_ID_RX);
174 	if (!da_peer)
175 		return false;
176 
177 	*p_tx_vdev_id = da_peer->vdev->vdev_id;
178 	/* If the source or destination peer in the isolation
179 	 * list then dont forward instead push to bridge stack.
180 	 */
181 	if (dp_get_peer_isolation(ta_txrx_peer) ||
182 	    dp_get_peer_isolation(da_peer) ||
183 	    da_peer->vdev->vdev_id != ta_txrx_peer->vdev->vdev_id) {
184 		dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX);
185 		return false;
186 	}
187 
188 	if (da_peer->bss_peer) {
189 		dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX);
190 		return false;
191 	}
192 
193 	dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX);
194 	return true;
195 }
196 
197 /*
198  * dp_rx_intrabss_fwd_rh() - Implements the Intra-BSS forwarding logic
199  *
200  * @soc: core txrx main context
201  * @ta_txrx_peer	: source peer entry
202  * @rx_tlv_hdr	: start address of rx tlvs
203  * @nbuf	: nbuf that has to be intrabss forwarded
204  *
205  * Return: bool: true if it is forwarded else false
206  */
207 static bool
dp_rx_intrabss_fwd_rh(struct dp_soc * soc,struct dp_txrx_peer * ta_txrx_peer,uint8_t * rx_tlv_hdr,qdf_nbuf_t nbuf,struct hal_rx_msdu_metadata msdu_metadata,struct cdp_tid_rx_stats * tid_stats)208 dp_rx_intrabss_fwd_rh(struct dp_soc *soc,
209 		      struct dp_txrx_peer *ta_txrx_peer,
210 		      uint8_t *rx_tlv_hdr,
211 		      qdf_nbuf_t nbuf,
212 		      struct hal_rx_msdu_metadata msdu_metadata,
213 		      struct cdp_tid_rx_stats *tid_stats)
214 {
215 	uint8_t tx_vdev_id;
216 
217 	/* if it is a broadcast pkt (eg: ARP) and it is not its own
218 	 * source, then clone the pkt and send the cloned pkt for
219 	 * intra BSS forwarding and original pkt up the network stack
220 	 * Note: how do we handle multicast pkts. do we forward
221 	 * all multicast pkts as is or let a higher layer module
222 	 * like igmpsnoop decide whether to forward or not with
223 	 * Mcast enhancement.
224 	 */
225 	if (qdf_nbuf_is_da_mcbc(nbuf) && !ta_txrx_peer->bss_peer)
226 		return dp_rx_intrabss_mcbc_fwd(soc, ta_txrx_peer, rx_tlv_hdr,
227 					       nbuf, tid_stats, 0);
228 
229 	if (dp_rx_intrabss_eapol_drop_check(soc, ta_txrx_peer, rx_tlv_hdr,
230 					    nbuf))
231 		return true;
232 
233 	if (dp_rx_intrabss_ucast_check_rh(soc, nbuf, ta_txrx_peer,
234 					  &msdu_metadata, &tx_vdev_id))
235 		return dp_rx_intrabss_ucast_fwd(soc, ta_txrx_peer, tx_vdev_id,
236 						rx_tlv_hdr, nbuf, tid_stats,
237 						0);
238 
239 	return false;
240 }
241 
242 #ifdef RX_DESC_DEBUG_CHECK
243 static
dp_rx_desc_nbuf_sanity_check_rh(struct dp_soc * soc,uint32_t * msg_word,struct dp_rx_desc * rx_desc)244 QDF_STATUS dp_rx_desc_nbuf_sanity_check_rh(struct dp_soc *soc,
245 					   uint32_t *msg_word,
246 					   struct dp_rx_desc *rx_desc)
247 {
248 	uint64_t paddr;
249 
250 	paddr = (HTT_RX_DATA_MSDU_INFO_BUFFER_ADDR_LOW_GET(*msg_word) |
251 		 ((uint64_t)(HTT_RX_DATA_MSDU_INFO_BUFFER_ADDR_HIGH_GET(*(msg_word + 1))) << 32));
252 
253 	/* Sanity check for possible buffer paddr corruption */
254 	if (dp_rx_desc_paddr_sanity_check(rx_desc, paddr))
255 		return QDF_STATUS_SUCCESS;
256 
257 	return QDF_STATUS_E_FAILURE;
258 }
259 
260 #else
261 static inline
dp_rx_desc_nbuf_sanity_check_rh(struct dp_soc * soc,uint32_t * msg_word,struct dp_rx_desc * rx_desc)262 QDF_STATUS dp_rx_desc_nbuf_sanity_check_rh(struct dp_soc *soc,
263 					   uint32_t *msg_word,
264 					   struct dp_rx_desc *rx_desc)
265 #endif
266 
267 #ifdef DUP_RX_DESC_WAR
268 static
269 void dp_rx_dump_info_and_assert_rh(struct dp_soc *soc,
270 				   uint32_t *msg_word,
271 				   struct dp_rx_desc *rx_desc)
272 {
273 	QDF_TRACE_HEX_DUMP(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO_HIGH,
274 			   msg_word, HTT_RX_DATA_MSDU_INFO_SIZE);
275 	dp_rx_desc_dump(rx_desc);
276 }
277 #else
278 static
279 void dp_rx_dump_info_and_assert_rh(struct dp_soc *soc,
280 				   uint32_t *msg_word,
281 				   struct dp_rx_desc *rx_desc)
282 {
283 	dp_rx_desc_dump(rx_desc);
284 	QDF_TRACE_HEX_DUMP(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO_HIGH,
285 			   msg_word, HTT_RX_DATA_MSDU_INFO_SIZE);
286 	qdf_assert_always(0);
287 }
288 #endif
289 
290 #ifdef WLAN_FEATURE_DP_RX_RING_HISTORY
291 static void
dp_rx_ring_record_entry_rh(struct dp_soc * soc,uint8_t ring_num,uint32_t * msg_word)292 dp_rx_ring_record_entry_rh(struct dp_soc *soc, uint8_t ring_num,
293 			   uint32_t *msg_word)
294 {
295 	struct dp_buf_info_record *record;
296 	uint32_t idx;
297 
298 	if (qdf_unlikely(!soc->rx_ring_history[ring_num]))
299 		return;
300 
301 	idx = dp_history_get_next_index(&soc->rx_ring_history[ring_num]->index,
302 					DP_RX_HIST_MAX);
303 
304 	/* No NULL check needed for record since its an array */
305 	record = &soc->rx_ring_history[ring_num]->entry[idx];
306 
307 	record->timestamp = qdf_get_log_timestamp();
308 	record->hbi.paddr =
309 		(HTT_RX_DATA_MSDU_INFO_BUFFER_ADDR_LOW_GET(*msg_word) |
310 		((uint64_t)(HTT_RX_DATA_MSDU_INFO_BUFFER_ADDR_HIGH_GET(*(msg_word + 1))) << 32));
311 	record->hbi.sw_cookie =
312 		HTT_RX_DATA_MSDU_INFO_SW_BUFFER_COOKIE_GET(*(msg_word + 1));
313 }
314 #else
315 static inline void
dp_rx_ring_record_entry_rh(struct dp_soc * soc,uint8_t rx_ring_num,uint32_t * msg_word)316 dp_rx_ring_record_entry_rh(struct dp_soc *soc, uint8_t rx_ring_num,
317 			   uint32_t *msg_word) {}
318 #endif
319 
320 #ifdef WLAN_FEATURE_MARK_FIRST_WAKEUP_PACKET
321 static inline void
dp_rx_mark_first_packet_after_wow_wakeup_rh(struct dp_soc * soc,uint32_t * msg_word,qdf_nbuf_t nbuf)322 dp_rx_mark_first_packet_after_wow_wakeup_rh(struct dp_soc *soc,
323 					    uint32_t *msg_word,
324 					    qdf_nbuf_t nbuf)
325 {
326 	struct dp_pdev *pdev = soc->pdev_list[0];
327 
328 	if (!pdev->is_first_wakeup_packet)
329 		return;
330 
331 	if (HTT_RX_DATA_MSDU_INFO_IS_FIRST_PKT_AFTER_WKP_GET(*(msg_word + 2))) {
332 		qdf_nbuf_mark_wakeup_frame(nbuf);
333 		dp_info("First packet after WOW Wakeup rcvd");
334 	}
335 }
336 #else
337 static inline void
dp_rx_mark_first_packet_after_wow_wakeup_rh(struct dp_soc * soc,uint32_t * msg_word,qdf_nbuf_t nbuf)338 dp_rx_mark_first_packet_after_wow_wakeup_rh(struct dp_soc *soc,
339 					    uint32_t *msg_word,
340 					    qdf_nbuf_t nbuf) {}
341 #endif
342 
343 #ifdef QCA_SUPPORT_EAPOL_OVER_CONTROL_PORT
344 static void
dp_rx_deliver_to_osif_stack_rh(struct dp_soc * soc,struct dp_vdev * vdev,struct dp_txrx_peer * txrx_peer,qdf_nbuf_t nbuf,qdf_nbuf_t tail,bool is_eapol)345 dp_rx_deliver_to_osif_stack_rh(struct dp_soc *soc,
346 			       struct dp_vdev *vdev,
347 			       struct dp_txrx_peer *txrx_peer,
348 			       qdf_nbuf_t nbuf,
349 			       qdf_nbuf_t tail,
350 			       bool is_eapol)
351 {
352 	if (is_eapol && soc->eapol_over_control_port)
353 		dp_rx_eapol_deliver_to_stack(soc, vdev, txrx_peer, nbuf, NULL);
354 	else
355 		dp_rx_deliver_to_stack(soc, vdev, txrx_peer, nbuf, NULL);
356 }
357 #else
358 static void
dp_rx_deliver_to_osif_stack_rh(struct dp_soc * soc,struct dp_vdev * vdev,struct dp_txrx_peer * txrx_peer,qdf_nbuf_t nbuf,qdf_nbuf_t tail,bool is_eapol)359 dp_rx_deliver_to_osif_stack_rh(struct dp_soc *soc,
360 			       struct dp_vdev *vdev,
361 			       struct dp_txrx_peer *txrx_peer,
362 			       qdf_nbuf_t nbuf,
363 			       qdf_nbuf_t tail,
364 			       bool is_eapol)
365 {
366 	dp_rx_deliver_to_stack(soc, vdev, txrx_peer, nbuf, NULL);
367 }
368 #endif
369 
370 static void
dp_rx_decrypt_unecrypt_err_handler_rh(struct dp_soc * soc,qdf_nbuf_t nbuf,uint8_t error_code,uint8_t mac_id)371 dp_rx_decrypt_unecrypt_err_handler_rh(struct dp_soc *soc, qdf_nbuf_t nbuf,
372 				      uint8_t error_code, uint8_t mac_id)
373 {
374 	uint32_t pkt_len, l2_hdr_offset;
375 	uint16_t msdu_len;
376 	struct dp_vdev *vdev;
377 	struct dp_txrx_peer *txrx_peer = NULL;
378 	dp_txrx_ref_handle txrx_ref_handle = NULL;
379 	qdf_ether_header_t *eh;
380 	bool is_broadcast;
381 	uint8_t *rx_tlv_hdr;
382 	uint16_t peer_id;
383 	uint16_t buf_size;
384 
385 	buf_size = wlan_cfg_rx_buffer_size(soc->wlan_cfg_ctx);
386 
387 	rx_tlv_hdr = qdf_nbuf_data(nbuf);
388 
389 	/*
390 	 * Check if DMA completed -- msdu_done is the last bit
391 	 * to be written
392 	 */
393 	if (!hal_rx_attn_msdu_done_get(soc->hal_soc, rx_tlv_hdr)) {
394 		dp_err_rl("MSDU DONE failure");
395 
396 		hal_rx_dump_pkt_tlvs(soc->hal_soc, rx_tlv_hdr,
397 				     QDF_TRACE_LEVEL_INFO);
398 		qdf_assert(0);
399 	}
400 
401 	if (qdf_unlikely(qdf_nbuf_is_rx_chfrag_cont(nbuf))) {
402 		dp_err("Unsupported MSDU format rcvd for error:%u", error_code);
403 		qdf_assert_always(0);
404 		goto free_nbuf;
405 	}
406 
407 	peer_id =  QDF_NBUF_CB_RX_PEER_ID(nbuf);
408 	txrx_peer = dp_tgt_txrx_peer_get_ref_by_id(soc, peer_id,
409 						   &txrx_ref_handle,
410 						   DP_MOD_ID_RX);
411 	if (!txrx_peer) {
412 		QDF_TRACE_ERROR_RL(QDF_MODULE_ID_DP, "txrx_peer is NULL");
413 		DP_STATS_INC_PKT(soc, rx.err.rx_invalid_peer, 1,
414 				 qdf_nbuf_len(nbuf));
415 		/* Trigger invalid peer handler wrapper */
416 		dp_rx_process_invalid_peer_wrapper(soc, nbuf, true, mac_id);
417 		return;
418 	}
419 
420 	l2_hdr_offset = hal_rx_msdu_end_l3_hdr_padding_get(soc->hal_soc,
421 							   rx_tlv_hdr);
422 	msdu_len = hal_rx_msdu_start_msdu_len_get(soc->hal_soc, rx_tlv_hdr);
423 	pkt_len = msdu_len + l2_hdr_offset + soc->rx_pkt_tlv_size;
424 
425 	if (qdf_unlikely(pkt_len > buf_size)) {
426 		DP_STATS_INC_PKT(soc, rx.err.rx_invalid_pkt_len,
427 				 1, pkt_len);
428 		goto free_nbuf;
429 	}
430 
431 	/* Set length in nbuf */
432 	qdf_nbuf_set_pktlen(nbuf, pkt_len);
433 
434 	qdf_nbuf_set_next(nbuf, NULL);
435 
436 	qdf_nbuf_set_rx_chfrag_start(nbuf, 1);
437 	qdf_nbuf_set_rx_chfrag_end(nbuf, 1);
438 
439 	vdev = txrx_peer->vdev;
440 	if (!vdev) {
441 		dp_rx_info_rl("%pK: INVALID vdev %pK OR osif_rx", soc,
442 			      vdev);
443 		DP_STATS_INC(soc, rx.err.invalid_vdev, 1);
444 		goto free_nbuf;
445 	}
446 
447 	/*
448 	 * Advance the packet start pointer by total size of
449 	 * pre-header TLV's
450 	 */
451 	dp_rx_skip_tlvs(soc, nbuf, l2_hdr_offset);
452 
453 	/*
454 	 * WAPI cert AP sends rekey frames as unencrypted.
455 	 * Thus RXDMA will report unencrypted frame error.
456 	 * To pass WAPI cert case, SW needs to pass unencrypted
457 	 * rekey frame to stack.
458 	 *
459 	 * In dynamic WEP case rekey frames are not encrypted
460 	 * similar to WAPI. Allow EAPOL when 8021+wep is enabled and
461 	 * key install is already done
462 	 */
463 	if ((qdf_nbuf_is_ipv4_wapi_pkt(nbuf)) ||
464 	    ((vdev->sec_type == cdp_sec_type_wep104) &&
465 	     (qdf_nbuf_is_ipv4_eapol_pkt(nbuf)))) {
466 		if (qdf_unlikely(hal_rx_msdu_end_da_is_mcbc_get(soc->hal_soc,
467 								rx_tlv_hdr) &&
468 				 (vdev->rx_decap_type ==
469 				  htt_cmn_pkt_type_ethernet))) {
470 			eh = (qdf_ether_header_t *)qdf_nbuf_data(nbuf);
471 			is_broadcast = (QDF_IS_ADDR_BROADCAST
472 					(eh->ether_dhost)) ? 1 : 0;
473 			DP_PEER_PER_PKT_STATS_INC_PKT(txrx_peer, rx.multicast,
474 						      1, qdf_nbuf_len(nbuf), 0);
475 			if (is_broadcast) {
476 				DP_PEER_PER_PKT_STATS_INC_PKT(txrx_peer, rx.bcast,
477 							      1, qdf_nbuf_len(nbuf), 0);
478 			}
479 		} else {
480 			DP_PEER_PER_PKT_STATS_INC_PKT(txrx_peer, rx.unicast, 1,
481 						      qdf_nbuf_len(nbuf),
482 						      0);
483 		}
484 
485 		if (qdf_unlikely(vdev->rx_decap_type == htt_cmn_pkt_type_raw)) {
486 			dp_rx_deliver_raw(vdev, nbuf, txrx_peer, 0);
487 		} else {
488 			/* Update the protocol tag in SKB based on CCE metadata */
489 			dp_rx_update_protocol_tag(soc, vdev, nbuf, rx_tlv_hdr,
490 						  EXCEPTION_DEST_RING_ID, true, true);
491 			/* Update the flow tag in SKB based on FSE metadata */
492 			dp_rx_update_flow_tag(soc, vdev, nbuf, rx_tlv_hdr, true);
493 			DP_PEER_STATS_FLAT_INC(txrx_peer, to_stack.num, 1);
494 			qdf_nbuf_set_exc_frame(nbuf, 1);
495 			dp_rx_deliver_to_osif_stack_rh(soc, vdev, txrx_peer, nbuf, NULL,
496 						       qdf_nbuf_is_ipv4_eapol_pkt(nbuf));
497 		}
498 	}
499 
500 	if (txrx_peer)
501 		dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX);
502 	return;
503 
504 free_nbuf:
505 	if (txrx_peer)
506 		dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX);
507 	dp_rx_nbuf_free(nbuf);
508 }
509 
510 static void
dp_rx_2k_jump_oor_err_handler_rh(struct dp_soc * soc,qdf_nbuf_t nbuf,uint32_t error_code)511 dp_rx_2k_jump_oor_err_handler_rh(struct dp_soc *soc, qdf_nbuf_t nbuf,
512 				 uint32_t error_code)
513 {
514 	uint32_t frame_mask;
515 	struct dp_txrx_peer *txrx_peer = NULL;
516 	dp_txrx_ref_handle txrx_ref_handle = NULL;
517 	uint8_t *rx_tlv_hdr;
518 	uint16_t peer_id;
519 
520 	rx_tlv_hdr = qdf_nbuf_data(nbuf);
521 	if (qdf_unlikely(qdf_nbuf_is_rx_chfrag_cont(nbuf))) {
522 		dp_err("Unsupported MSDU format rcvd for error:%u", error_code);
523 		qdf_assert_always(0);
524 		goto free_nbuf;
525 	}
526 
527 	peer_id =  QDF_NBUF_CB_RX_PEER_ID(nbuf);
528 	txrx_peer = dp_tgt_txrx_peer_get_ref_by_id(soc, peer_id,
529 						   &txrx_ref_handle,
530 						   DP_MOD_ID_RX);
531 	if (!txrx_peer) {
532 		dp_info_rl("peer not found");
533 		goto free_nbuf;
534 	}
535 
536 	if (error_code == HTT_RXDATA_ERR_OOR) {
537 		frame_mask = FRAME_MASK_IPV4_ARP | FRAME_MASK_IPV4_DHCP |
538 			FRAME_MASK_IPV4_EAPOL | FRAME_MASK_IPV6_DHCP;
539 	} else {
540 		frame_mask = FRAME_MASK_IPV4_ARP;
541 	}
542 
543 	if (dp_rx_deliver_special_frame(soc, txrx_peer, nbuf, frame_mask,
544 					rx_tlv_hdr)) {
545 		if (error_code == HTT_RXDATA_ERR_OOR) {
546 			DP_STATS_INC(soc, rx.err.reo_err_oor_to_stack, 1);
547 		} else {
548 			DP_STATS_INC(soc, rx.err.rx_2k_jump_to_stack, 1);
549 		}
550 
551 		dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX);
552 		return;
553 	}
554 
555 free_nbuf:
556 	if (txrx_peer)
557 		dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX);
558 
559 	if (error_code == HTT_RXDATA_ERR_OOR) {
560 		DP_STATS_INC(soc, rx.err.reo_err_oor_drop, 1);
561 	} else {
562 		DP_STATS_INC(soc, rx.err.rx_2k_jump_drop, 1);
563 	}
564 
565 	dp_rx_nbuf_free(nbuf);
566 }
567 
dp_rx_mic_err_handler_rh(struct dp_soc * soc,qdf_nbuf_t nbuf)568 static void dp_rx_mic_err_handler_rh(struct dp_soc *soc, qdf_nbuf_t nbuf)
569 {
570 	struct dp_vdev *vdev;
571 	struct dp_pdev *pdev;
572 	struct dp_txrx_peer *txrx_peer = NULL;
573 	dp_txrx_ref_handle txrx_ref_handle = NULL;
574 	struct ol_if_ops *tops;
575 	uint16_t rx_seq, fragno;
576 	uint8_t is_raw;
577 	uint16_t peer_id;
578 	unsigned int tid;
579 	QDF_STATUS status;
580 	struct cdp_rx_mic_err_info mic_failure_info;
581 
582 	/*
583 	 * only first msdu, mpdu start description tlv valid?
584 	 * and use it for following msdu.
585 	 */
586 	if (!hal_rx_msdu_end_first_msdu_get(soc->hal_soc,
587 					    qdf_nbuf_data(nbuf)))
588 		return;
589 
590 	peer_id =  QDF_NBUF_CB_RX_PEER_ID(nbuf);
591 	txrx_peer = dp_tgt_txrx_peer_get_ref_by_id(soc, peer_id,
592 						   &txrx_ref_handle,
593 						   DP_MOD_ID_RX);
594 	if (!txrx_peer) {
595 		dp_info_rl("txrx_peer not found");
596 		goto fail;
597 	}
598 
599 	vdev = txrx_peer->vdev;
600 	if (!vdev) {
601 		dp_info_rl("VDEV not found");
602 		goto fail;
603 	}
604 
605 	pdev = vdev->pdev;
606 	if (!pdev) {
607 		dp_info_rl("PDEV not found");
608 		goto fail;
609 	}
610 
611 	/*TODO is raw support required for evros check*/
612 	is_raw = HAL_IS_DECAP_FORMAT_RAW(soc->hal_soc, qdf_nbuf_data(nbuf));
613 	if (is_raw) {
614 		fragno = dp_rx_frag_get_mpdu_frag_number(soc,
615 							 qdf_nbuf_data(nbuf));
616 		/* Can get only last fragment */
617 		if (fragno) {
618 			tid = hal_rx_mpdu_start_tid_get(soc->hal_soc,
619 							qdf_nbuf_data(nbuf));
620 			rx_seq = hal_rx_get_rx_sequence(soc->hal_soc,
621 							qdf_nbuf_data(nbuf));
622 
623 			status = dp_rx_defrag_add_last_frag(soc, txrx_peer,
624 							    tid, rx_seq, nbuf);
625 			dp_info_rl("Frag pkt seq# %d frag# %d consumed " "status %d !",
626 				   rx_seq, fragno, status);
627 			if (txrx_peer)
628 				dp_txrx_peer_unref_delete(txrx_ref_handle,
629 							  DP_MOD_ID_RX);
630 			return;
631 		}
632 	}
633 
634 	if (qdf_unlikely(qdf_nbuf_is_rx_chfrag_cont(nbuf))) {
635 		dp_err("Unsupported MSDU format rcvd in MIC error handler");
636 		qdf_assert_always(0);
637 		goto fail;
638 	}
639 
640 	if (hal_rx_mpdu_get_addr1(soc->hal_soc, qdf_nbuf_data(nbuf),
641 				  &mic_failure_info.da_mac_addr.bytes[0])) {
642 		dp_err_rl("Failed to get da_mac_addr");
643 		goto fail;
644 	}
645 
646 	if (hal_rx_mpdu_get_addr2(soc->hal_soc, qdf_nbuf_data(nbuf),
647 				  &mic_failure_info.ta_mac_addr.bytes[0])) {
648 		dp_err_rl("Failed to get ta_mac_addr");
649 		goto fail;
650 	}
651 
652 	mic_failure_info.key_id = 0;
653 	mic_failure_info.multicast =
654 		IEEE80211_IS_MULTICAST(mic_failure_info.da_mac_addr.bytes);
655 	qdf_mem_zero(mic_failure_info.tsc, MIC_SEQ_CTR_SIZE);
656 	mic_failure_info.frame_type = cdp_rx_frame_type_802_11;
657 	mic_failure_info.data = NULL;
658 	mic_failure_info.vdev_id = vdev->vdev_id;
659 
660 	tops = pdev->soc->cdp_soc.ol_ops;
661 	if (tops->rx_mic_error)
662 		tops->rx_mic_error(soc->ctrl_psoc, pdev->pdev_id,
663 				   &mic_failure_info);
664 
665 fail:
666 	dp_rx_nbuf_free(nbuf);
667 	if (txrx_peer)
668 		dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX);
669 }
670 
dp_rx_err_handler_rh(struct dp_soc * soc,struct dp_rx_desc * rx_desc,uint32_t error_code)671 static QDF_STATUS dp_rx_err_handler_rh(struct dp_soc *soc,
672 				       struct dp_rx_desc *rx_desc,
673 				       uint32_t error_code)
674 {
675 	switch (error_code) {
676 	case HTT_RXDATA_ERR_MSDU_LIMIT:
677 	case HTT_RXDATA_ERR_FLUSH_REQUEST:
678 	case HTT_RXDATA_ERR_ZERO_LEN_MSDU:
679 		dp_rx_nbuf_free(rx_desc->nbuf);
680 		dp_err_rl("MSDU rcvd with error code: %u", error_code);
681 		break;
682 	case HTT_RXDATA_ERR_TKIP_MIC:
683 		dp_rx_mic_err_handler_rh(soc, rx_desc->nbuf);
684 		break;
685 	case HTT_RXDATA_ERR_OOR:
686 	case HTT_RXDATA_ERR_2K_JUMP:
687 		dp_rx_2k_jump_oor_err_handler_rh(soc, rx_desc->nbuf,
688 						 error_code);
689 		break;
690 	case HTT_RXDATA_ERR_DECRYPT:
691 	case HTT_RXDATA_ERR_UNENCRYPTED:
692 		dp_rx_decrypt_unecrypt_err_handler_rh(soc, rx_desc->nbuf,
693 						      error_code,
694 						      rx_desc->pool_id);
695 		break;
696 	default:
697 		dp_err("Invalid error packet rcvd, code: %u", error_code);
698 		dp_rx_desc_dump(rx_desc);
699 		qdf_assert_always(0);
700 		dp_rx_nbuf_free(rx_desc->nbuf);
701 		return QDF_STATUS_E_INVAL;
702 	}
703 
704 	return QDF_STATUS_SUCCESS;
705 }
706 
707 void
dp_rx_data_indication_handler(struct dp_soc * soc,qdf_nbuf_t data_ind,uint16_t vdev_id,uint16_t peer_id,uint16_t msdu_count)708 dp_rx_data_indication_handler(struct dp_soc *soc, qdf_nbuf_t data_ind,
709 			      uint16_t vdev_id, uint16_t peer_id,
710 			      uint16_t msdu_count)
711 {
712 	uint8_t *data_ind_msg;
713 	uint32_t *msg_word;
714 	uint32_t rx_ctx_id;
715 	hal_soc_handle_t hal_soc;
716 	struct dp_rx_desc *rx_desc = NULL;
717 	qdf_nbuf_t nbuf, next;
718 	union dp_rx_desc_list_elem_t *head[MAX_PDEV_CNT];
719 	union dp_rx_desc_list_elem_t *tail[MAX_PDEV_CNT];
720 	uint32_t num_pending = msdu_count;
721 	uint32_t rx_buf_cookie;
722 	uint16_t msdu_len = 0;
723 	struct dp_txrx_peer *txrx_peer;
724 	dp_txrx_ref_handle txrx_ref_handle = NULL;
725 	struct dp_vdev *vdev;
726 	uint32_t pkt_len = 0;
727 	uint8_t *rx_tlv_hdr;
728 	uint32_t rx_bufs_reaped[MAX_PDEV_CNT];
729 	uint8_t mac_id = 0;
730 	struct dp_pdev *rx_pdev;
731 	struct dp_srng *dp_rxdma_srng;
732 	struct rx_desc_pool *rx_desc_pool;
733 	struct cdp_tid_rx_stats *tid_stats;
734 	qdf_nbuf_t nbuf_head;
735 	qdf_nbuf_t nbuf_tail;
736 	qdf_nbuf_t deliver_list_head;
737 	qdf_nbuf_t deliver_list_tail;
738 	uint32_t num_rx_bufs_reaped = 0;
739 	struct hif_opaque_softc *scn;
740 	int32_t tid = 0;
741 	bool is_prev_msdu_last = true;
742 	uint32_t rx_ol_pkt_cnt = 0;
743 	struct hal_rx_msdu_metadata msdu_metadata;
744 	qdf_nbuf_t ebuf_head;
745 	qdf_nbuf_t ebuf_tail;
746 	uint8_t pkt_capture_offload = 0;
747 	uint32_t old_tid;
748 	uint32_t peer_ext_stats;
749 	uint32_t dsf;
750 	uint32_t max_ast;
751 	uint64_t current_time = 0;
752 	uint32_t error;
753 	uint32_t error_code;
754 	QDF_STATUS status;
755 	uint16_t buf_size;
756 
757 	DP_HIST_INIT();
758 
759 	qdf_assert_always(soc && msdu_count);
760 	hal_soc = soc->hal_soc;
761 	qdf_assert_always(hal_soc);
762 
763 	scn = soc->hif_handle;
764 	dp_runtime_pm_mark_last_busy(soc);
765 	buf_size = wlan_cfg_rx_buffer_size(soc->wlan_cfg_ctx);
766 
767 	/* reset local variables here to be re-used in the function */
768 	nbuf_head = NULL;
769 	nbuf_tail = NULL;
770 	deliver_list_head = NULL;
771 	deliver_list_tail = NULL;
772 	txrx_peer = NULL;
773 	vdev = NULL;
774 	num_rx_bufs_reaped = 0;
775 	ebuf_head = NULL;
776 	ebuf_tail = NULL;
777 
778 	qdf_mem_zero(rx_bufs_reaped, sizeof(rx_bufs_reaped));
779 	qdf_mem_zero(head, sizeof(head));
780 	qdf_mem_zero(tail, sizeof(tail));
781 	old_tid = 0xff;
782 	dsf = 0;
783 	peer_ext_stats = 0;
784 	max_ast = 0;
785 	rx_pdev = NULL;
786 	tid_stats = NULL;
787 
788 	dp_pkt_get_timestamp(&current_time);
789 
790 	peer_ext_stats = wlan_cfg_is_peer_ext_stats_enabled(soc->wlan_cfg_ctx);
791 	max_ast = wlan_cfg_get_max_ast_idx(soc->wlan_cfg_ctx);
792 
793 	data_ind_msg = qdf_nbuf_data(data_ind);
794 	msg_word =
795 		(uint32_t *)(data_ind_msg + HTT_RX_DATA_IND_HDR_SIZE);
796 	rx_ctx_id =
797 		dp_rx_get_ctx_id_frm_napiid(QDF_NBUF_CB_RX_CTX_ID(data_ind));
798 
799 	while (qdf_likely(num_pending)) {
800 		dp_rx_ring_record_entry_rh(soc, rx_ctx_id, msg_word);
801 		rx_buf_cookie =
802 			HTT_RX_DATA_MSDU_INFO_SW_BUFFER_COOKIE_GET(*(msg_word + 1));
803 		rx_desc = dp_rx_cookie_2_va_rxdma_buf(soc, rx_buf_cookie);
804 		if (qdf_unlikely(!rx_desc && !rx_desc->nbuf &&
805 				 !rx_desc->in_use)) {
806 			dp_err("Invalid RX descriptor");
807 			qdf_assert_always(0);
808 			/* TODO handle this if its valid case */
809 		}
810 
811 		status = dp_rx_desc_nbuf_sanity_check_rh(soc, msg_word,
812 							 rx_desc);
813 		if (qdf_unlikely(QDF_IS_STATUS_ERROR(status))) {
814 			DP_STATS_INC(soc, rx.err.nbuf_sanity_fail, 1);
815 			dp_info_rl("Nbuf sanity check failure!");
816 			dp_rx_dump_info_and_assert_rh(soc, msg_word, rx_desc);
817 			rx_desc->in_err_state = 1;
818 			continue;
819 		}
820 
821 		if (qdf_unlikely(!dp_rx_desc_check_magic(rx_desc))) {
822 			dp_err("Invalid rx_desc cookie=%d", rx_buf_cookie);
823 			DP_STATS_INC(soc, rx.err.rx_desc_invalid_magic, 1);
824 			dp_rx_dump_info_and_assert_rh(soc, msg_word, rx_desc);
825 			continue;
826 		}
827 
828 		msdu_len =
829 			HTT_RX_DATA_MSDU_INFO_MSDU_LENGTH_GET(*(msg_word + 2));
830 
831 		if (qdf_unlikely(
832 		HTT_RX_DATA_MSDU_INFO_MSDU_CONTINUATION_GET(*(msg_word + 2)))) {
833 			/* previous msdu has end bit set, so current one is
834 			 * the new MPDU
835 			 */
836 			if (is_prev_msdu_last) {
837 				/* For new MPDU check if we can read complete
838 				 * MPDU by comparing the number of buffers
839 				 * available and number of buffers needed to
840 				 * reap this MPDU
841 				 */
842 				if ((msdu_len /
843 				     (buf_size -
844 				      soc->rx_pkt_tlv_size) + 1) >
845 				    num_pending) {
846 					DP_STATS_INC(soc,
847 						     rx.msdu_scatter_wait_break,
848 						     1);
849 					/* This is not expected host cannot deal
850 					 * with partial frame in single DATA
851 					 * indication, F.W has to submit full
852 					 * frame in single DATA indication
853 					 */
854 					qdf_assert_always(0);
855 				}
856 				is_prev_msdu_last = false;
857 			}
858 		}
859 
860 		if (HTT_RX_DATA_MSDU_INFO_MPDU_RETRY_BIT_GET(*(msg_word + 2)))
861 			qdf_nbuf_set_rx_retry_flag(rx_desc->nbuf, 1);
862 
863 		if (HTT_RX_DATA_MSDU_INFO_RAW_MPDU_FRAME_GET(*(msg_word + 2)))
864 			qdf_nbuf_set_raw_frame(rx_desc->nbuf, 1);
865 
866 		/*
867 		 * end MSDU has continuation bit set to zero using this to detect
868 		 * full MSDU
869 		 */
870 		if (!is_prev_msdu_last &&
871 		    !HTT_RX_DATA_MSDU_INFO_MSDU_CONTINUATION_GET(*(msg_word + 2)))
872 			is_prev_msdu_last = true;
873 
874 		rx_bufs_reaped[rx_desc->pool_id]++;
875 		QDF_NBUF_CB_RX_PEER_ID(rx_desc->nbuf) = peer_id;
876 		QDF_NBUF_CB_RX_VDEV_ID(rx_desc->nbuf) = vdev_id;
877 		dp_rx_mark_first_packet_after_wow_wakeup_rh(soc, msg_word,
878 							    rx_desc->nbuf);
879 
880 		/*
881 		 * save msdu flags first, last and continuation msdu in
882 		 * nbuf->cb, also save mcbc, is_da_valid, is_sa_valid and
883 		 * length to nbuf->cb. This ensures the info required for
884 		 * per pkt processing is always in the same cache line.
885 		 * This helps in improving throughput for smaller pkt
886 		 * sizes.
887 		 */
888 		if (HTT_RX_DATA_MSDU_INFO_FIRST_MSDU_IN_MPDU_GET(*(msg_word + 2)))
889 			qdf_nbuf_set_rx_chfrag_start(rx_desc->nbuf, 1);
890 
891 		if (HTT_RX_DATA_MSDU_INFO_MSDU_CONTINUATION_GET(*(msg_word + 2)))
892 			qdf_nbuf_set_rx_chfrag_cont(rx_desc->nbuf, 1);
893 
894 		if (HTT_RX_DATA_MSDU_INFO_LAST_MSDU_IN_MPDU_GET(*(msg_word + 2)))
895 			qdf_nbuf_set_rx_chfrag_end(rx_desc->nbuf, 1);
896 
897 		if (HTT_RX_DATA_MSDU_INFO_DA_IS_MCBC_GET(*(msg_word + 2)))
898 			qdf_nbuf_set_da_mcbc(rx_desc->nbuf, 1);
899 
900 		if (HTT_RX_DATA_MSDU_INFO_DA_IS_VALID_GET(*(msg_word + 2)))
901 			qdf_nbuf_set_da_valid(rx_desc->nbuf, 1);
902 
903 		if (HTT_RX_DATA_MSDU_INFO_SA_IS_VALID_GET(*(msg_word + 2)))
904 			qdf_nbuf_set_sa_valid(rx_desc->nbuf, 1);
905 
906 		qdf_nbuf_set_tid_val(rx_desc->nbuf,
907 			HTT_RX_DATA_MSDU_INFO_TID_INFO_GET(*(msg_word + 2)));
908 
909 		/* set whether packet took offloads path */
910 		 qdf_nbuf_set_rx_reo_dest_ind_or_sw_excpt(
911 		 rx_desc->nbuf,
912 		 HTT_RX_DATA_MSDU_INFO_FW_OFFLOADS_INSPECTED_GET(*(msg_word + 1)));
913 
914 		QDF_NBUF_CB_RX_PKT_LEN(rx_desc->nbuf) = msdu_len;
915 
916 		QDF_NBUF_CB_RX_CTX_ID(rx_desc->nbuf) = rx_ctx_id;
917 
918 		/*
919 		 * TODO  move unmap after scattered msdu waiting break logic
920 		 * in case double skb unmap happened.
921 		 */
922 		dp_rx_nbuf_unmap(soc, rx_desc, rx_ctx_id);
923 
924 		error = HTT_RX_DATA_MSDU_INFO_ERROR_VALID_GET(*(msg_word + 3));
925 		if (qdf_unlikely(error)) {
926 			dp_rx_err("MSDU RX error encountered error:%u", error);
927 			error_code =
928 			HTT_RX_DATA_MSDU_INFO_ERROR_INFO_GET(*(msg_word + 3));
929 			dp_rx_err_handler_rh(soc, rx_desc, error_code);
930 
931 		} else {
932 			DP_RX_PROCESS_NBUF(soc, nbuf_head, nbuf_tail, ebuf_head,
933 					   ebuf_tail, rx_desc);
934 		}
935 
936 		num_pending -= 1;
937 
938 		dp_rx_add_to_free_desc_list(&head[rx_desc->pool_id],
939 					    &tail[rx_desc->pool_id], rx_desc);
940 		num_rx_bufs_reaped++;
941 
942 		msg_word += HTT_RX_DATA_MSDU_INFO_SIZE >> 2;
943 	}
944 
945 	dp_rx_per_core_stats_update(soc, rx_ctx_id, num_rx_bufs_reaped);
946 
947 	for (mac_id = 0; mac_id < MAX_PDEV_CNT; mac_id++) {
948 		/*
949 		 * continue with next mac_id if no pkts were reaped
950 		 * from that pool
951 		 */
952 		if (!rx_bufs_reaped[mac_id])
953 			continue;
954 
955 		dp_rxdma_srng = &soc->rx_refill_buf_ring[mac_id];
956 
957 		rx_desc_pool = &soc->rx_desc_buf[mac_id];
958 
959 		dp_rx_buffers_replenish_simple(soc, mac_id, dp_rxdma_srng,
960 					       rx_desc_pool,
961 					       rx_bufs_reaped[mac_id],
962 					       &head[mac_id], &tail[mac_id]);
963 	}
964 
965 	dp_verbose_debug("replenished %u", rx_bufs_reaped[0]);
966 	/* Peer can be NULL is case of LFR */
967 	if (qdf_likely(txrx_peer))
968 		vdev = NULL;
969 
970 	/*
971 	 * BIG loop where each nbuf is dequeued from global queue,
972 	 * processed and queued back on a per vdev basis. These nbufs
973 	 * are sent to stack as and when we run out of nbufs
974 	 * or a new nbuf dequeued from global queue has a different
975 	 * vdev when compared to previous nbuf.
976 	 */
977 	nbuf = nbuf_head;
978 	while (nbuf) {
979 		next = nbuf->next;
980 
981 		if (qdf_unlikely(dp_rx_is_raw_frame_dropped(nbuf))) {
982 			nbuf = next;
983 			DP_STATS_INC(soc, rx.err.raw_frm_drop, 1);
984 			continue;
985 		}
986 
987 		rx_tlv_hdr = qdf_nbuf_data(nbuf);
988 		vdev_id = QDF_NBUF_CB_RX_VDEV_ID(nbuf);
989 		peer_id =  QDF_NBUF_CB_RX_PEER_ID(nbuf);
990 
991 		/* Get TID from struct cb->tid_val, save to tid */
992 		if (qdf_nbuf_is_rx_chfrag_start(nbuf)) {
993 			tid = qdf_nbuf_get_tid_val(nbuf);
994 			if (tid >= CDP_MAX_DATA_TIDS) {
995 				DP_STATS_INC(soc, rx.err.rx_invalid_tid_err, 1);
996 				dp_rx_nbuf_free(nbuf);
997 				nbuf = next;
998 				continue;
999 			}
1000 		}
1001 
1002 		if (qdf_unlikely(!txrx_peer)) {
1003 			txrx_peer =
1004 			dp_rx_get_txrx_peer_and_vdev(soc, nbuf, peer_id,
1005 						     &txrx_ref_handle,
1006 						     pkt_capture_offload,
1007 						     &vdev,
1008 						     &rx_pdev, &dsf,
1009 						     &old_tid);
1010 			if (qdf_unlikely(!txrx_peer) || qdf_unlikely(!vdev)) {
1011 				nbuf = next;
1012 				continue;
1013 			}
1014 		} else if (txrx_peer && txrx_peer->peer_id != peer_id) {
1015 			dp_txrx_peer_unref_delete(txrx_ref_handle,
1016 						  DP_MOD_ID_RX);
1017 
1018 			txrx_peer =
1019 			dp_rx_get_txrx_peer_and_vdev(soc, nbuf, peer_id,
1020 						     &txrx_ref_handle,
1021 						     pkt_capture_offload,
1022 						     &vdev,
1023 						     &rx_pdev, &dsf,
1024 						     &old_tid);
1025 			if (qdf_unlikely(!txrx_peer) || qdf_unlikely(!vdev)) {
1026 				nbuf = next;
1027 				continue;
1028 			}
1029 		}
1030 
1031 		if (txrx_peer) {
1032 			QDF_NBUF_CB_DP_TRACE_PRINT(nbuf) = false;
1033 			qdf_dp_trace_set_track(nbuf, QDF_RX);
1034 			QDF_NBUF_CB_RX_DP_TRACE(nbuf) = 1;
1035 			QDF_NBUF_CB_RX_PACKET_TRACK(nbuf) =
1036 				QDF_NBUF_RX_PKT_DATA_TRACK;
1037 		}
1038 
1039 		/* when hlos tid override is enabled, save tid in
1040 		 * skb->priority
1041 		 */
1042 		if (qdf_unlikely(vdev->skip_sw_tid_classification &
1043 					DP_TXRX_HLOS_TID_OVERRIDE_ENABLED))
1044 			qdf_nbuf_set_priority(nbuf, tid);
1045 
1046 		DP_RX_TID_SAVE(nbuf, tid);
1047 		if (qdf_unlikely(dsf) || qdf_unlikely(peer_ext_stats) ||
1048 		    dp_rx_pkt_tracepoints_enabled())
1049 			qdf_nbuf_set_timestamp(nbuf);
1050 
1051 		if (qdf_likely(old_tid != tid)) {
1052 			tid_stats =
1053 		&rx_pdev->stats.tid_stats.tid_rx_stats[rx_ctx_id][tid];
1054 			old_tid = tid;
1055 		}
1056 
1057 		/*
1058 		 * Check if DMA completed -- msdu_done is the last bit
1059 		 * to be written
1060 		 */
1061 		if (qdf_likely(!qdf_nbuf_is_rx_chfrag_cont(nbuf))) {
1062 			if (qdf_unlikely(!hal_rx_attn_msdu_done_get_rh(
1063 								 rx_tlv_hdr))) {
1064 				dp_err_rl("MSDU DONE failure");
1065 				DP_STATS_INC(soc, rx.err.msdu_done_fail, 1);
1066 				hal_rx_dump_pkt_tlvs(hal_soc, rx_tlv_hdr,
1067 						     QDF_TRACE_LEVEL_INFO);
1068 				tid_stats->fail_cnt[MSDU_DONE_FAILURE]++;
1069 				qdf_assert(0);
1070 				dp_rx_nbuf_free(nbuf);
1071 				nbuf = next;
1072 				continue;
1073 			} else if (qdf_unlikely(hal_rx_attn_msdu_len_err_get_rh(
1074 								 rx_tlv_hdr))) {
1075 				DP_STATS_INC(soc, rx.err.msdu_len_err, 1);
1076 				dp_rx_nbuf_free(nbuf);
1077 				nbuf = next;
1078 				continue;
1079 			}
1080 		}
1081 
1082 		DP_HIST_PACKET_COUNT_INC(vdev->pdev->pdev_id);
1083 		/*
1084 		 * First IF condition:
1085 		 * This condition is valid when 802.11 fragemented
1086 		 * pkts reinjected back, even though this case is
1087 		 * not valid for Rhine keeping it for sanity, verify
1088 		 * and remove this first if condition based on test.
1089 		 * Second IF condition:
1090 		 * The below condition happens when an MSDU is spread
1091 		 * across multiple buffers. This can happen in two cases
1092 		 * 1. The nbuf size is smaller then the received msdu.
1093 		 *    ex: we have set the nbuf size to 2048 during
1094 		 *        nbuf_alloc. but we received an msdu which is
1095 		 *        2304 bytes in size then this msdu is spread
1096 		 *        across 2 nbufs.
1097 		 *
1098 		 * 2. AMSDUs when RAW mode is enabled.
1099 		 *    ex: 1st MSDU is in 1st nbuf and 2nd MSDU is spread
1100 		 *        across 1st nbuf and 2nd nbuf and last MSDU is
1101 		 *        spread across 2nd nbuf and 3rd nbuf.
1102 		 *
1103 		 * for these scenarios let us create a skb frag_list and
1104 		 * append these buffers till the last MSDU of the AMSDU
1105 		 * Third condition:
1106 		 * This is the most likely case, we receive 802.3 pkts
1107 		 * decapsulated by HW, here we need to set the pkt length.
1108 		 */
1109 		hal_rx_msdu_metadata_get(hal_soc, rx_tlv_hdr, &msdu_metadata);
1110 		if (qdf_unlikely(qdf_nbuf_is_frag(nbuf))) {
1111 			bool is_mcbc, is_sa_vld, is_da_vld;
1112 
1113 			is_mcbc = hal_rx_msdu_end_da_is_mcbc_get(soc->hal_soc,
1114 								 rx_tlv_hdr);
1115 			is_sa_vld =
1116 				hal_rx_msdu_end_sa_is_valid_get(soc->hal_soc,
1117 								rx_tlv_hdr);
1118 			is_da_vld =
1119 				hal_rx_msdu_end_da_is_valid_get(soc->hal_soc,
1120 								rx_tlv_hdr);
1121 
1122 			qdf_nbuf_set_da_mcbc(nbuf, is_mcbc);
1123 			qdf_nbuf_set_da_valid(nbuf, is_da_vld);
1124 			qdf_nbuf_set_sa_valid(nbuf, is_sa_vld);
1125 
1126 			qdf_nbuf_pull_head(nbuf, soc->rx_pkt_tlv_size);
1127 		} else if (qdf_nbuf_is_rx_chfrag_cont(nbuf)) {
1128 			msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf);
1129 			nbuf = dp_rx_sg_create(soc, nbuf);
1130 			next = nbuf->next;
1131 
1132 			if (qdf_nbuf_is_raw_frame(nbuf)) {
1133 				DP_STATS_INC(vdev->pdev, rx_raw_pkts, 1);
1134 				DP_PEER_PER_PKT_STATS_INC_PKT(txrx_peer,
1135 							      rx.raw, 1,
1136 							      msdu_len,
1137 							      0);
1138 			} else {
1139 				dp_rx_nbuf_free(nbuf);
1140 				DP_STATS_INC(soc, rx.err.scatter_msdu, 1);
1141 				dp_info_rl("scatter msdu len %d, dropped",
1142 					   msdu_len);
1143 				nbuf = next;
1144 				continue;
1145 			}
1146 		} else {
1147 			msdu_len = QDF_NBUF_CB_RX_PKT_LEN(nbuf);
1148 			pkt_len = msdu_len +
1149 				  msdu_metadata.l3_hdr_pad +
1150 				  soc->rx_pkt_tlv_size;
1151 
1152 			qdf_nbuf_set_pktlen(nbuf, pkt_len);
1153 			dp_rx_skip_tlvs(soc, nbuf, msdu_metadata.l3_hdr_pad);
1154 		}
1155 
1156 		dp_rx_send_pktlog(soc, rx_pdev, nbuf, QDF_TX_RX_STATUS_OK);
1157 
1158 		if (!dp_wds_rx_policy_check(rx_tlv_hdr, vdev, txrx_peer)) {
1159 			dp_rx_err("%pK: Policy Check Drop pkt", soc);
1160 			DP_PEER_PER_PKT_STATS_INC(txrx_peer,
1161 						  rx.policy_check_drop, 1, 0);
1162 			tid_stats->fail_cnt[POLICY_CHECK_DROP]++;
1163 			/* Drop & free packet */
1164 			dp_rx_nbuf_free(nbuf);
1165 			/* Statistics */
1166 			nbuf = next;
1167 			continue;
1168 		}
1169 
1170 		/*
1171 		 * Drop non-EAPOL frames from unauthorized peer.
1172 		 */
1173 		if (qdf_likely(txrx_peer) &&
1174 		    qdf_unlikely(!txrx_peer->authorize) &&
1175 		    !qdf_nbuf_is_raw_frame(nbuf)) {
1176 			bool is_eapol = qdf_nbuf_is_ipv4_eapol_pkt(nbuf) ||
1177 					qdf_nbuf_is_ipv4_wapi_pkt(nbuf);
1178 
1179 			if (!is_eapol) {
1180 				DP_PEER_PER_PKT_STATS_INC(txrx_peer,
1181 							  rx.peer_unauth_rx_pkt_drop,
1182 							  1, 0);
1183 				dp_rx_nbuf_free(nbuf);
1184 				nbuf = next;
1185 				continue;
1186 			}
1187 		}
1188 
1189 		if (soc->process_rx_status)
1190 			dp_rx_cksum_offload(vdev->pdev, nbuf, rx_tlv_hdr);
1191 
1192 		dp_rx_msdu_stats_update(soc, nbuf, rx_tlv_hdr, txrx_peer,
1193 					rx_ctx_id, tid_stats, 0);
1194 
1195 		if (qdf_likely(vdev->rx_decap_type ==
1196 			       htt_cmn_pkt_type_ethernet)) {
1197 			/* Due to HW issue, sometimes we see that the sa_idx
1198 			 * and da_idx are invalid with sa_valid and da_valid
1199 			 * bits set
1200 			 *
1201 			 * in this case we also see that value of
1202 			 * sa_sw_peer_id is set as 0
1203 			 *
1204 			 * Drop the packet if sa_idx and da_idx OOB or
1205 			 * sa_sw_peerid is 0
1206 			 */
1207 			if (!is_sa_da_idx_valid(max_ast, nbuf,
1208 						msdu_metadata)) {
1209 				dp_rx_nbuf_free(nbuf);
1210 				nbuf = next;
1211 				DP_STATS_INC(soc, rx.err.invalid_sa_da_idx, 1);
1212 				continue;
1213 			}
1214 			if (qdf_unlikely(dp_rx_mec_check_wrapper(soc,
1215 								 txrx_peer,
1216 								 rx_tlv_hdr,
1217 								 nbuf))) {
1218 				/* this is a looped back MCBC pkt,drop it */
1219 				DP_PEER_PER_PKT_STATS_INC_PKT(txrx_peer,
1220 							      rx.mec_drop, 1,
1221 							      QDF_NBUF_CB_RX_PKT_LEN(nbuf),
1222 							      0);
1223 				dp_rx_nbuf_free(nbuf);
1224 				nbuf = next;
1225 				continue;
1226 			}
1227 			/* WDS Source Port Learning */
1228 			if (qdf_likely(vdev->wds_enabled))
1229 				dp_rx_wds_srcport_learn(soc,
1230 							rx_tlv_hdr,
1231 							txrx_peer,
1232 							nbuf,
1233 							msdu_metadata);
1234 
1235 			/* Intrabss-fwd */
1236 			if (dp_rx_check_ap_bridge(vdev))
1237 				if (dp_rx_intrabss_fwd_rh(soc, txrx_peer,
1238 							  rx_tlv_hdr,
1239 							  nbuf,
1240 							  msdu_metadata,
1241 							  tid_stats)) {
1242 					nbuf = next;
1243 					tid_stats->intrabss_cnt++;
1244 					continue; /* Get next desc */
1245 				}
1246 		}
1247 
1248 		dp_rx_fill_gro_info(soc, rx_tlv_hdr, nbuf, &rx_ol_pkt_cnt);
1249 
1250 		dp_rx_update_stats(soc, nbuf);
1251 
1252 		dp_pkt_add_timestamp(txrx_peer->vdev, QDF_PKT_RX_DRIVER_ENTRY,
1253 				     current_time, nbuf);
1254 
1255 		DP_RX_LIST_APPEND(deliver_list_head,
1256 				  deliver_list_tail,
1257 				  nbuf);
1258 		DP_PEER_STATS_FLAT_INC_PKT(txrx_peer, to_stack, 1,
1259 					   QDF_NBUF_CB_RX_PKT_LEN(nbuf));
1260 		if (qdf_unlikely(txrx_peer->in_twt))
1261 			DP_PEER_PER_PKT_STATS_INC_PKT(txrx_peer,
1262 						      rx.to_stack_twt, 1,
1263 						      QDF_NBUF_CB_RX_PKT_LEN(nbuf),
1264 						      0);
1265 
1266 		tid_stats->delivered_to_stack++;
1267 		nbuf = next;
1268 	}
1269 
1270 	DP_RX_DELIVER_TO_STACK(soc, vdev, txrx_peer, peer_id,
1271 			       pkt_capture_offload,
1272 			       deliver_list_head,
1273 			       deliver_list_tail);
1274 
1275 	if (qdf_likely(txrx_peer))
1276 		dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX);
1277 
1278 	if (vdev && vdev->osif_fisa_flush)
1279 		vdev->osif_fisa_flush(soc, rx_ctx_id);
1280 
1281 	if (vdev && vdev->osif_gro_flush && rx_ol_pkt_cnt) {
1282 		vdev->osif_gro_flush(vdev->osif_vdev,
1283 					rx_ctx_id);
1284 	}
1285 
1286 	/* Update histogram statistics by looping through pdev's */
1287 	DP_RX_HIST_STATS_PER_PDEV();
1288 }
1289 
1290 /*
1291  * dp_rx_defrag_deliver_rh(): Deliver defrag packet to stack
1292  * @peer: Pointer to the peer
1293  * @tid: Transmit Identifier
1294  * @head: Nbuf to be delivered
1295  *
1296  * Returns: None
1297  */
dp_rx_defrag_deliver_rh(struct dp_txrx_peer * txrx_peer,unsigned int tid,qdf_nbuf_t head)1298 static inline void dp_rx_defrag_deliver_rh(struct dp_txrx_peer *txrx_peer,
1299 					   unsigned int tid,
1300 					   qdf_nbuf_t head)
1301 {
1302 	struct dp_vdev *vdev = txrx_peer->vdev;
1303 	struct dp_soc *soc = vdev->pdev->soc;
1304 	qdf_nbuf_t deliver_list_head = NULL;
1305 	qdf_nbuf_t deliver_list_tail = NULL;
1306 	uint8_t *rx_tlv_hdr;
1307 
1308 	rx_tlv_hdr = qdf_nbuf_data(head);
1309 
1310 	QDF_NBUF_CB_RX_VDEV_ID(head) = vdev->vdev_id;
1311 	qdf_nbuf_set_tid_val(head, tid);
1312 	qdf_nbuf_pull_head(head, soc->rx_pkt_tlv_size);
1313 
1314 	DP_RX_LIST_APPEND(deliver_list_head, deliver_list_tail,
1315 			  head);
1316 	dp_rx_deliver_to_stack(soc, vdev, txrx_peer, deliver_list_head,
1317 			       deliver_list_tail);
1318 }
1319 
1320 static
dp_rx_defrag_store_fragment_rh(struct dp_soc * soc,qdf_nbuf_t frag)1321 QDF_STATUS dp_rx_defrag_store_fragment_rh(struct dp_soc *soc, qdf_nbuf_t frag)
1322 {
1323 	struct dp_rx_reorder_array_elem *rx_reorder_array_elem;
1324 	struct dp_pdev *pdev;
1325 	struct dp_txrx_peer *txrx_peer = NULL;
1326 	dp_txrx_ref_handle txrx_ref_handle = NULL;
1327 	uint16_t peer_id, tid;
1328 	uint8_t fragno, more_frag, all_frag_present = 0;
1329 	uint16_t rxseq;
1330 	QDF_STATUS status;
1331 	struct dp_rx_tid_defrag *rx_tid;
1332 	uint8_t mpdu_sequence_control_valid;
1333 	uint8_t mpdu_frame_control_valid;
1334 	uint8_t *rx_buf_start = qdf_nbuf_data(frag);
1335 	uint32_t msdu_len;
1336 
1337 	if (qdf_nbuf_len(frag) > 0) {
1338 		dp_rx_info("Dropping unexpected packet with skb_len: %d, data len: %d",
1339 			   (uint32_t)qdf_nbuf_len(frag), frag->data_len);
1340 		DP_STATS_INC(soc, rx.rx_frag_err_len_error, 1);
1341 		goto discard_frag;
1342 	}
1343 
1344 	msdu_len = QDF_NBUF_CB_RX_PKT_LEN(frag);
1345 	qdf_nbuf_set_pktlen(frag, (msdu_len + soc->rx_pkt_tlv_size));
1346 	qdf_nbuf_append_ext_list(frag, NULL, 0);
1347 
1348 	/* Check if the packet is from a valid peer */
1349 	peer_id = QDF_NBUF_CB_RX_PEER_ID(frag);
1350 	txrx_peer = dp_txrx_peer_get_ref_by_id(soc, peer_id, &txrx_ref_handle,
1351 					       DP_MOD_ID_RX);
1352 
1353 	if (!txrx_peer) {
1354 		/* We should not receive anything from unknown peer
1355 		 * however, that might happen while we are in the monitor mode.
1356 		 * We don't need to handle that here
1357 		 */
1358 		dp_rx_info_rl("Unknown peer with peer_id %d, dropping fragment",
1359 			      peer_id);
1360 		DP_STATS_INC(soc, rx.rx_frag_err_no_peer, 1);
1361 		goto discard_frag;
1362 	}
1363 
1364 	tid = qdf_nbuf_get_tid_val(frag);
1365 	if (tid >= DP_MAX_TIDS) {
1366 		dp_rx_info("TID out of bounds: %d", tid);
1367 		qdf_assert_always(0);
1368 		goto discard_frag;
1369 	}
1370 
1371 	mpdu_sequence_control_valid =
1372 		hal_rx_get_mpdu_sequence_control_valid(soc->hal_soc,
1373 						       rx_buf_start);
1374 
1375 	/* Invalid MPDU sequence control field, MPDU is of no use */
1376 	if (!mpdu_sequence_control_valid) {
1377 		dp_rx_err("Invalid MPDU seq control field, dropping MPDU");
1378 
1379 		qdf_assert(0);
1380 		goto discard_frag;
1381 	}
1382 
1383 	mpdu_frame_control_valid =
1384 		hal_rx_get_mpdu_frame_control_valid(soc->hal_soc,
1385 						    rx_buf_start);
1386 
1387 	/* Invalid frame control field */
1388 	if (!mpdu_frame_control_valid) {
1389 		dp_rx_err("Invalid frame control field, dropping MPDU");
1390 
1391 		qdf_assert(0);
1392 		goto discard_frag;
1393 	}
1394 
1395 	/* Current mpdu sequence */
1396 	more_frag = dp_rx_frag_get_more_frag_bit(soc, rx_buf_start);
1397 
1398 	/* HW does not populate the fragment number as of now
1399 	 * need to get from the 802.11 header
1400 	 */
1401 	fragno = dp_rx_frag_get_mpdu_frag_number(soc, rx_buf_start);
1402 	rxseq = dp_rx_frag_get_mpdu_seq_number(soc, rx_buf_start);
1403 
1404 	pdev = txrx_peer->vdev->pdev;
1405 	rx_tid = &txrx_peer->rx_tid[tid];
1406 
1407 	qdf_spin_lock_bh(&rx_tid->defrag_tid_lock);
1408 	rx_reorder_array_elem = txrx_peer->rx_tid[tid].array;
1409 	if (!rx_reorder_array_elem) {
1410 		dp_err_rl("Rcvd Fragmented pkt before tid setup for peer %pK",
1411 			  txrx_peer);
1412 		qdf_spin_unlock_bh(&rx_tid->defrag_tid_lock);
1413 		goto discard_frag;
1414 	}
1415 
1416 	/*
1417 	 * !more_frag: no more fragments to be delivered
1418 	 * !frag_no: packet is not fragmented
1419 	 * !rx_reorder_array_elem->head: no saved fragments so far
1420 	 */
1421 	if (!more_frag && !fragno && !rx_reorder_array_elem->head) {
1422 		/* We should not get into this situation here.
1423 		 * It means an unfragmented packet with fragment flag
1424 		 * is delivered over frag indication.
1425 		 * Typically it follows normal rx path.
1426 		 */
1427 		dp_rx_err("Rcvd unfragmented pkt on fragmented path, dropping");
1428 
1429 		qdf_spin_unlock_bh(&rx_tid->defrag_tid_lock);
1430 		qdf_assert(0);
1431 		goto discard_frag;
1432 	}
1433 
1434 	/* Check if the fragment is for the same sequence or a different one */
1435 	dp_rx_debug("rx_tid %d", tid);
1436 	if (rx_reorder_array_elem->head) {
1437 		dp_rx_debug("rxseq %d\n", rxseq);
1438 		if (rxseq != rx_tid->curr_seq_num) {
1439 			dp_rx_debug("mismatch cur_seq %d rxseq %d\n",
1440 				    rx_tid->curr_seq_num, rxseq);
1441 			/* Drop stored fragments if out of sequence
1442 			 * fragment is received
1443 			 */
1444 			dp_rx_reorder_flush_frag(txrx_peer, tid);
1445 
1446 			DP_STATS_INC(soc, rx.rx_frag_oor, 1);
1447 
1448 			dp_rx_debug("cur rxseq %d\n", rxseq);
1449 			/*
1450 			 * The sequence number for this fragment becomes the
1451 			 * new sequence number to be processed
1452 			 */
1453 			rx_tid->curr_seq_num = rxseq;
1454 		}
1455 	} else {
1456 		/* Check if we are processing first fragment if it is
1457 		 * not first fragment discard fragment.
1458 		 */
1459 		if (fragno) {
1460 			qdf_spin_unlock_bh(&rx_tid->defrag_tid_lock);
1461 			goto discard_frag;
1462 		}
1463 		dp_rx_debug("cur rxseq %d\n", rxseq);
1464 		/* Start of a new sequence */
1465 		dp_rx_defrag_cleanup(txrx_peer, tid);
1466 		rx_tid->curr_seq_num = rxseq;
1467 	}
1468 
1469 	/*
1470 	 * If the earlier sequence was dropped, this will be the fresh start.
1471 	 * Else, continue with next fragment in a given sequence
1472 	 */
1473 	status = dp_rx_defrag_fraglist_insert(txrx_peer, tid,
1474 					      &rx_reorder_array_elem->head,
1475 					      &rx_reorder_array_elem->tail,
1476 					      frag, &all_frag_present);
1477 
1478 	if (pdev->soc->rx.flags.defrag_timeout_check)
1479 		dp_rx_defrag_waitlist_remove(txrx_peer, tid);
1480 
1481 	/* Yet to receive more fragments for this sequence number */
1482 	if (!all_frag_present) {
1483 		uint32_t now_ms =
1484 			qdf_system_ticks_to_msecs(qdf_system_ticks());
1485 
1486 		txrx_peer->rx_tid[tid].defrag_timeout_ms =
1487 			now_ms + pdev->soc->rx.defrag.timeout_ms;
1488 
1489 		if (pdev->soc->rx.flags.defrag_timeout_check)
1490 			dp_rx_defrag_waitlist_add(txrx_peer, tid);
1491 		dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX_ERR);
1492 		qdf_spin_unlock_bh(&rx_tid->defrag_tid_lock);
1493 
1494 		return QDF_STATUS_SUCCESS;
1495 	}
1496 
1497 	dp_rx_debug("All fragments received for sequence: %d", rxseq);
1498 
1499 	/* Process the fragments */
1500 	status = dp_rx_defrag(txrx_peer, tid, rx_reorder_array_elem->head,
1501 			      rx_reorder_array_elem->tail);
1502 	if (QDF_IS_STATUS_ERROR(status)) {
1503 		dp_rx_err("Fragment processing failed");
1504 
1505 		dp_rx_defrag_cleanup(txrx_peer, tid);
1506 		qdf_spin_unlock_bh(&rx_tid->defrag_tid_lock);
1507 		goto end;
1508 	}
1509 
1510 	dp_rx_defrag_deliver_rh(txrx_peer, tid, rx_reorder_array_elem->head);
1511 	dp_rx_debug("Fragmented sequence successfully reinjected");
1512 
1513 	dp_rx_defrag_cleanup(txrx_peer, tid);
1514 	qdf_spin_unlock_bh(&rx_tid->defrag_tid_lock);
1515 
1516 	dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX_ERR);
1517 
1518 	return QDF_STATUS_SUCCESS;
1519 
1520 discard_frag:
1521 	dp_rx_nbuf_free(frag);
1522 end:
1523 	if (txrx_peer)
1524 		dp_txrx_peer_unref_delete(txrx_ref_handle, DP_MOD_ID_RX_ERR);
1525 
1526 	DP_STATS_INC(soc, rx.rx_frag_err, 1);
1527 	return QDF_STATUS_E_DEFRAG_ERROR;
1528 }
1529 
1530 void
dp_rx_frag_indication_handler(struct dp_soc * soc,qdf_nbuf_t data_ind,uint16_t vdev_id,uint16_t peer_id)1531 dp_rx_frag_indication_handler(struct dp_soc *soc, qdf_nbuf_t data_ind,
1532 			      uint16_t vdev_id, uint16_t peer_id)
1533 {
1534 	uint8_t *data_ind_msg;
1535 	uint32_t *msg_word;
1536 	uint32_t rx_ctx_id;
1537 	qdf_nbuf_t nbuf;
1538 	union dp_rx_desc_list_elem_t *head = NULL;
1539 	union dp_rx_desc_list_elem_t *tail = NULL;
1540 	QDF_STATUS status = QDF_STATUS_SUCCESS;
1541 	uint32_t rx_buf_cookie;
1542 	struct dp_rx_desc *rx_desc;
1543 	uint8_t mac_id = 0;
1544 
1545 	qdf_assert(soc);
1546 
1547 	data_ind_msg = qdf_nbuf_data(data_ind);
1548 	msg_word =
1549 		(uint32_t *)(data_ind_msg + HTT_RX_DATA_IND_HDR_SIZE);
1550 	rx_ctx_id =
1551 		dp_rx_get_ctx_id_frm_napiid(QDF_NBUF_CB_RX_CTX_ID(data_ind));
1552 
1553 	rx_buf_cookie =
1554 		HTT_RX_DATA_MSDU_INFO_SW_BUFFER_COOKIE_GET(*(msg_word + 1));
1555 	rx_desc = dp_rx_cookie_2_va_rxdma_buf(soc, rx_buf_cookie);
1556 	if (qdf_unlikely(!rx_desc && !rx_desc->nbuf &&
1557 			 !rx_desc->in_use)) {
1558 		dp_rx_err("Invalid RX descriptor");
1559 		qdf_assert_always(0);
1560 		/* TODO handle this if its valid case */
1561 	}
1562 
1563 	if (qdf_unlikely(!dp_rx_desc_check_magic(rx_desc))) {
1564 		dp_err("Invalid rx_desc cookie=%d", rx_buf_cookie);
1565 		DP_STATS_INC(soc, rx.err.rx_desc_invalid_magic, 1);
1566 		qdf_assert(0);
1567 	}
1568 
1569 	nbuf = rx_desc->nbuf;
1570 	QDF_NBUF_CB_RX_PKT_LEN(nbuf) =
1571 		HTT_RX_DATA_MSDU_INFO_MSDU_LENGTH_GET(*(msg_word + 2));
1572 	qdf_nbuf_set_tid_val(nbuf, HTT_RX_DATA_MSDU_INFO_TID_INFO_GET(*(msg_word + 2)));
1573 	QDF_NBUF_CB_RX_PEER_ID(nbuf) = peer_id;
1574 	QDF_NBUF_CB_RX_VDEV_ID(nbuf) = vdev_id;
1575 	QDF_NBUF_CB_RX_CTX_ID(nbuf) = rx_ctx_id;
1576 
1577 	dp_rx_nbuf_unmap(soc, rx_desc, rx_ctx_id);
1578 
1579 	dp_rx_add_to_free_desc_list(&head, &tail, rx_desc);
1580 
1581 	dp_rx_buffers_replenish_simple(soc, rx_desc->pool_id,
1582 				       &soc->rx_refill_buf_ring[mac_id],
1583 				       &soc->rx_desc_buf[rx_desc->pool_id],
1584 				       1, &head, &tail);
1585 
1586 	if (dp_rx_buffer_pool_refill(soc, nbuf, rx_desc->pool_id))
1587 		/* fragment queued back to the pool no frag to handle*/
1588 		return;
1589 
1590 	/* Process fragment-by-fragment */
1591 	status = dp_rx_defrag_store_fragment_rh(soc, nbuf);
1592 	if (QDF_IS_STATUS_ERROR(status))
1593 		dp_rx_err("Unable to handle frag ret:%u", status);
1594 }
1595 
dp_rx_desc_pool_init_rh(struct dp_soc * soc,struct rx_desc_pool * rx_desc_pool,uint32_t pool_id)1596 QDF_STATUS dp_rx_desc_pool_init_rh(struct dp_soc *soc,
1597 				   struct rx_desc_pool *rx_desc_pool,
1598 				   uint32_t pool_id)
1599 {
1600 	return dp_rx_desc_pool_init_generic(soc, rx_desc_pool, pool_id);
1601 }
1602 
dp_rx_desc_pool_deinit_rh(struct dp_soc * soc,struct rx_desc_pool * rx_desc_pool,uint32_t pool_id)1603 void dp_rx_desc_pool_deinit_rh(struct dp_soc *soc,
1604 			       struct rx_desc_pool *rx_desc_pool,
1605 			       uint32_t pool_id)
1606 {
1607 }
1608