Commit | Line | Data |
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5e3dd157 KV |
1 | /* |
2 | * Copyright (c) 2005-2011 Atheros Communications Inc. | |
3 | * Copyright (c) 2011-2013 Qualcomm Atheros, Inc. | |
4 | * | |
5 | * Permission to use, copy, modify, and/or distribute this software for any | |
6 | * purpose with or without fee is hereby granted, provided that the above | |
7 | * copyright notice and this permission notice appear in all copies. | |
8 | * | |
9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
16 | */ | |
17 | ||
18 | #include <linux/etherdevice.h> | |
19 | #include "htt.h" | |
20 | #include "mac.h" | |
21 | #include "hif.h" | |
22 | #include "txrx.h" | |
23 | #include "debug.h" | |
24 | ||
25 | void __ath10k_htt_tx_dec_pending(struct ath10k_htt *htt) | |
26 | { | |
27 | htt->num_pending_tx--; | |
28 | if (htt->num_pending_tx == htt->max_num_pending_tx - 1) | |
29 | ieee80211_wake_queues(htt->ar->hw); | |
30 | } | |
31 | ||
32 | static void ath10k_htt_tx_dec_pending(struct ath10k_htt *htt) | |
33 | { | |
34 | spin_lock_bh(&htt->tx_lock); | |
35 | __ath10k_htt_tx_dec_pending(htt); | |
36 | spin_unlock_bh(&htt->tx_lock); | |
37 | } | |
38 | ||
39 | static int ath10k_htt_tx_inc_pending(struct ath10k_htt *htt) | |
40 | { | |
41 | int ret = 0; | |
42 | ||
43 | spin_lock_bh(&htt->tx_lock); | |
44 | ||
45 | if (htt->num_pending_tx >= htt->max_num_pending_tx) { | |
46 | ret = -EBUSY; | |
47 | goto exit; | |
48 | } | |
49 | ||
50 | htt->num_pending_tx++; | |
51 | if (htt->num_pending_tx == htt->max_num_pending_tx) | |
52 | ieee80211_stop_queues(htt->ar->hw); | |
53 | ||
54 | exit: | |
55 | spin_unlock_bh(&htt->tx_lock); | |
56 | return ret; | |
57 | } | |
58 | ||
59 | int ath10k_htt_tx_alloc_msdu_id(struct ath10k_htt *htt) | |
60 | { | |
61 | int msdu_id; | |
62 | ||
63 | lockdep_assert_held(&htt->tx_lock); | |
64 | ||
65 | msdu_id = find_first_zero_bit(htt->used_msdu_ids, | |
66 | htt->max_num_pending_tx); | |
67 | if (msdu_id == htt->max_num_pending_tx) | |
68 | return -ENOBUFS; | |
69 | ||
70 | ath10k_dbg(ATH10K_DBG_HTT, "htt tx alloc msdu_id %d\n", msdu_id); | |
71 | __set_bit(msdu_id, htt->used_msdu_ids); | |
72 | return msdu_id; | |
73 | } | |
74 | ||
75 | void ath10k_htt_tx_free_msdu_id(struct ath10k_htt *htt, u16 msdu_id) | |
76 | { | |
77 | lockdep_assert_held(&htt->tx_lock); | |
78 | ||
79 | if (!test_bit(msdu_id, htt->used_msdu_ids)) | |
80 | ath10k_warn("trying to free unallocated msdu_id %d\n", msdu_id); | |
81 | ||
82 | ath10k_dbg(ATH10K_DBG_HTT, "htt tx free msdu_id %hu\n", msdu_id); | |
83 | __clear_bit(msdu_id, htt->used_msdu_ids); | |
84 | } | |
85 | ||
86 | int ath10k_htt_tx_attach(struct ath10k_htt *htt) | |
87 | { | |
88 | u8 pipe; | |
89 | ||
90 | spin_lock_init(&htt->tx_lock); | |
91 | init_waitqueue_head(&htt->empty_tx_wq); | |
92 | ||
93 | /* At the beginning free queue number should hint us the maximum | |
94 | * queue length */ | |
95 | pipe = htt->ar->htc->endpoint[htt->eid].ul_pipe_id; | |
96 | htt->max_num_pending_tx = ath10k_hif_get_free_queue_number(htt->ar, | |
97 | pipe); | |
98 | ||
99 | ath10k_dbg(ATH10K_DBG_HTT, "htt tx max num pending tx %d\n", | |
100 | htt->max_num_pending_tx); | |
101 | ||
102 | htt->pending_tx = kzalloc(sizeof(*htt->pending_tx) * | |
103 | htt->max_num_pending_tx, GFP_KERNEL); | |
104 | if (!htt->pending_tx) | |
105 | return -ENOMEM; | |
106 | ||
107 | htt->used_msdu_ids = kzalloc(sizeof(unsigned long) * | |
108 | BITS_TO_LONGS(htt->max_num_pending_tx), | |
109 | GFP_KERNEL); | |
110 | if (!htt->used_msdu_ids) { | |
111 | kfree(htt->pending_tx); | |
112 | return -ENOMEM; | |
113 | } | |
114 | ||
115 | return 0; | |
116 | } | |
117 | ||
118 | static void ath10k_htt_tx_cleanup_pending(struct ath10k_htt *htt) | |
119 | { | |
120 | struct sk_buff *txdesc; | |
121 | int msdu_id; | |
122 | ||
123 | /* No locks needed. Called after communication with the device has | |
124 | * been stopped. */ | |
125 | ||
126 | for (msdu_id = 0; msdu_id < htt->max_num_pending_tx; msdu_id++) { | |
127 | if (!test_bit(msdu_id, htt->used_msdu_ids)) | |
128 | continue; | |
129 | ||
130 | txdesc = htt->pending_tx[msdu_id]; | |
131 | if (!txdesc) | |
132 | continue; | |
133 | ||
134 | ath10k_dbg(ATH10K_DBG_HTT, "force cleanup msdu_id %hu\n", | |
135 | msdu_id); | |
136 | ||
137 | if (ATH10K_SKB_CB(txdesc)->htt.refcount > 0) | |
138 | ATH10K_SKB_CB(txdesc)->htt.refcount = 1; | |
139 | ||
140 | ATH10K_SKB_CB(txdesc)->htt.discard = true; | |
141 | ath10k_txrx_tx_unref(htt, txdesc); | |
142 | } | |
143 | } | |
144 | ||
145 | void ath10k_htt_tx_detach(struct ath10k_htt *htt) | |
146 | { | |
147 | ath10k_htt_tx_cleanup_pending(htt); | |
148 | kfree(htt->pending_tx); | |
149 | kfree(htt->used_msdu_ids); | |
150 | return; | |
151 | } | |
152 | ||
153 | void ath10k_htt_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb) | |
154 | { | |
155 | struct ath10k_skb_cb *skb_cb = ATH10K_SKB_CB(skb); | |
156 | struct ath10k_htt *htt = ar->htt; | |
157 | ||
158 | if (skb_cb->htt.is_conf) { | |
159 | dev_kfree_skb_any(skb); | |
160 | return; | |
161 | } | |
162 | ||
163 | if (skb_cb->is_aborted) { | |
164 | skb_cb->htt.discard = true; | |
165 | ||
166 | /* if the skbuff is aborted we need to make sure we'll free up | |
167 | * the tx resources, we can't simply run tx_unref() 2 times | |
168 | * because if htt tx completion came in earlier we'd access | |
169 | * unallocated memory */ | |
170 | if (skb_cb->htt.refcount > 1) | |
171 | skb_cb->htt.refcount = 1; | |
172 | } | |
173 | ||
174 | ath10k_txrx_tx_unref(htt, skb); | |
175 | } | |
176 | ||
177 | int ath10k_htt_h2t_ver_req_msg(struct ath10k_htt *htt) | |
178 | { | |
179 | struct sk_buff *skb; | |
180 | struct htt_cmd *cmd; | |
181 | int len = 0; | |
182 | int ret; | |
183 | ||
184 | len += sizeof(cmd->hdr); | |
185 | len += sizeof(cmd->ver_req); | |
186 | ||
187 | skb = ath10k_htc_alloc_skb(len); | |
188 | if (!skb) | |
189 | return -ENOMEM; | |
190 | ||
191 | skb_put(skb, len); | |
192 | cmd = (struct htt_cmd *)skb->data; | |
193 | cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_VERSION_REQ; | |
194 | ||
195 | ATH10K_SKB_CB(skb)->htt.is_conf = true; | |
196 | ||
197 | ret = ath10k_htc_send(htt->ar->htc, htt->eid, skb); | |
198 | if (ret) { | |
199 | dev_kfree_skb_any(skb); | |
200 | return ret; | |
201 | } | |
202 | ||
203 | return 0; | |
204 | } | |
205 | ||
206 | int ath10k_htt_send_rx_ring_cfg_ll(struct ath10k_htt *htt) | |
207 | { | |
208 | struct sk_buff *skb; | |
209 | struct htt_cmd *cmd; | |
210 | struct htt_rx_ring_setup_ring *ring; | |
211 | const int num_rx_ring = 1; | |
212 | u16 flags; | |
213 | u32 fw_idx; | |
214 | int len; | |
215 | int ret; | |
216 | ||
217 | /* | |
218 | * the HW expects the buffer to be an integral number of 4-byte | |
219 | * "words" | |
220 | */ | |
221 | BUILD_BUG_ON(!IS_ALIGNED(HTT_RX_BUF_SIZE, 4)); | |
222 | BUILD_BUG_ON((HTT_RX_BUF_SIZE & HTT_MAX_CACHE_LINE_SIZE_MASK) != 0); | |
223 | ||
224 | len = sizeof(cmd->hdr) + sizeof(cmd->rx_setup.hdr) | |
225 | + (sizeof(*ring) * num_rx_ring); | |
226 | skb = ath10k_htc_alloc_skb(len); | |
227 | if (!skb) | |
228 | return -ENOMEM; | |
229 | ||
230 | skb_put(skb, len); | |
231 | ||
232 | cmd = (struct htt_cmd *)skb->data; | |
233 | ring = &cmd->rx_setup.rings[0]; | |
234 | ||
235 | cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_RX_RING_CFG; | |
236 | cmd->rx_setup.hdr.num_rings = 1; | |
237 | ||
238 | /* FIXME: do we need all of this? */ | |
239 | flags = 0; | |
240 | flags |= HTT_RX_RING_FLAGS_MAC80211_HDR; | |
241 | flags |= HTT_RX_RING_FLAGS_MSDU_PAYLOAD; | |
242 | flags |= HTT_RX_RING_FLAGS_PPDU_START; | |
243 | flags |= HTT_RX_RING_FLAGS_PPDU_END; | |
244 | flags |= HTT_RX_RING_FLAGS_MPDU_START; | |
245 | flags |= HTT_RX_RING_FLAGS_MPDU_END; | |
246 | flags |= HTT_RX_RING_FLAGS_MSDU_START; | |
247 | flags |= HTT_RX_RING_FLAGS_MSDU_END; | |
248 | flags |= HTT_RX_RING_FLAGS_RX_ATTENTION; | |
249 | flags |= HTT_RX_RING_FLAGS_FRAG_INFO; | |
250 | flags |= HTT_RX_RING_FLAGS_UNICAST_RX; | |
251 | flags |= HTT_RX_RING_FLAGS_MULTICAST_RX; | |
252 | flags |= HTT_RX_RING_FLAGS_CTRL_RX; | |
253 | flags |= HTT_RX_RING_FLAGS_MGMT_RX; | |
254 | flags |= HTT_RX_RING_FLAGS_NULL_RX; | |
255 | flags |= HTT_RX_RING_FLAGS_PHY_DATA_RX; | |
256 | ||
257 | fw_idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr); | |
258 | ||
259 | ring->fw_idx_shadow_reg_paddr = | |
260 | __cpu_to_le32(htt->rx_ring.alloc_idx.paddr); | |
261 | ring->rx_ring_base_paddr = __cpu_to_le32(htt->rx_ring.base_paddr); | |
262 | ring->rx_ring_len = __cpu_to_le16(htt->rx_ring.size); | |
263 | ring->rx_ring_bufsize = __cpu_to_le16(HTT_RX_BUF_SIZE); | |
264 | ring->flags = __cpu_to_le16(flags); | |
265 | ring->fw_idx_init_val = __cpu_to_le16(fw_idx); | |
266 | ||
267 | #define desc_offset(x) (offsetof(struct htt_rx_desc, x) / 4) | |
268 | ||
269 | ring->mac80211_hdr_offset = __cpu_to_le16(desc_offset(rx_hdr_status)); | |
270 | ring->msdu_payload_offset = __cpu_to_le16(desc_offset(msdu_payload)); | |
271 | ring->ppdu_start_offset = __cpu_to_le16(desc_offset(ppdu_start)); | |
272 | ring->ppdu_end_offset = __cpu_to_le16(desc_offset(ppdu_end)); | |
273 | ring->mpdu_start_offset = __cpu_to_le16(desc_offset(mpdu_start)); | |
274 | ring->mpdu_end_offset = __cpu_to_le16(desc_offset(mpdu_end)); | |
275 | ring->msdu_start_offset = __cpu_to_le16(desc_offset(msdu_start)); | |
276 | ring->msdu_end_offset = __cpu_to_le16(desc_offset(msdu_end)); | |
277 | ring->rx_attention_offset = __cpu_to_le16(desc_offset(attention)); | |
278 | ring->frag_info_offset = __cpu_to_le16(desc_offset(frag_info)); | |
279 | ||
280 | #undef desc_offset | |
281 | ||
282 | ATH10K_SKB_CB(skb)->htt.is_conf = true; | |
283 | ||
284 | ret = ath10k_htc_send(htt->ar->htc, htt->eid, skb); | |
285 | if (ret) { | |
286 | dev_kfree_skb_any(skb); | |
287 | return ret; | |
288 | } | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
293 | int ath10k_htt_mgmt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) | |
294 | { | |
295 | struct device *dev = htt->ar->dev; | |
296 | struct ath10k_skb_cb *skb_cb; | |
297 | struct sk_buff *txdesc = NULL; | |
298 | struct htt_cmd *cmd; | |
299 | u8 vdev_id = ATH10K_SKB_CB(msdu)->htt.vdev_id; | |
300 | int len = 0; | |
301 | int msdu_id = -1; | |
302 | int res; | |
303 | ||
304 | ||
305 | res = ath10k_htt_tx_inc_pending(htt); | |
306 | if (res) | |
307 | return res; | |
308 | ||
309 | len += sizeof(cmd->hdr); | |
310 | len += sizeof(cmd->mgmt_tx); | |
311 | ||
312 | txdesc = ath10k_htc_alloc_skb(len); | |
313 | if (!txdesc) { | |
314 | res = -ENOMEM; | |
315 | goto err; | |
316 | } | |
317 | ||
318 | spin_lock_bh(&htt->tx_lock); | |
319 | msdu_id = ath10k_htt_tx_alloc_msdu_id(htt); | |
320 | if (msdu_id < 0) { | |
321 | spin_unlock_bh(&htt->tx_lock); | |
322 | res = msdu_id; | |
323 | goto err; | |
324 | } | |
325 | htt->pending_tx[msdu_id] = txdesc; | |
326 | spin_unlock_bh(&htt->tx_lock); | |
327 | ||
328 | res = ath10k_skb_map(dev, msdu); | |
329 | if (res) | |
330 | goto err; | |
331 | ||
332 | skb_put(txdesc, len); | |
333 | cmd = (struct htt_cmd *)txdesc->data; | |
334 | cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_MGMT_TX; | |
335 | cmd->mgmt_tx.msdu_paddr = __cpu_to_le32(ATH10K_SKB_CB(msdu)->paddr); | |
336 | cmd->mgmt_tx.len = __cpu_to_le32(msdu->len); | |
337 | cmd->mgmt_tx.desc_id = __cpu_to_le32(msdu_id); | |
338 | cmd->mgmt_tx.vdev_id = __cpu_to_le32(vdev_id); | |
339 | memcpy(cmd->mgmt_tx.hdr, msdu->data, | |
340 | min_t(int, msdu->len, HTT_MGMT_FRM_HDR_DOWNLOAD_LEN)); | |
341 | ||
342 | /* refcount is decremented by HTC and HTT completions until it reaches | |
343 | * zero and is freed */ | |
344 | skb_cb = ATH10K_SKB_CB(txdesc); | |
345 | skb_cb->htt.msdu_id = msdu_id; | |
346 | skb_cb->htt.refcount = 2; | |
347 | skb_cb->htt.msdu = msdu; | |
348 | ||
349 | res = ath10k_htc_send(htt->ar->htc, htt->eid, txdesc); | |
350 | if (res) | |
351 | goto err; | |
352 | ||
353 | return 0; | |
354 | ||
355 | err: | |
356 | ath10k_skb_unmap(dev, msdu); | |
357 | ||
358 | if (txdesc) | |
359 | dev_kfree_skb_any(txdesc); | |
360 | if (msdu_id >= 0) { | |
361 | spin_lock_bh(&htt->tx_lock); | |
362 | htt->pending_tx[msdu_id] = NULL; | |
363 | ath10k_htt_tx_free_msdu_id(htt, msdu_id); | |
364 | spin_unlock_bh(&htt->tx_lock); | |
365 | } | |
366 | ath10k_htt_tx_dec_pending(htt); | |
367 | return res; | |
368 | } | |
369 | ||
370 | int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) | |
371 | { | |
372 | struct device *dev = htt->ar->dev; | |
373 | struct htt_cmd *cmd; | |
374 | struct htt_data_tx_desc_frag *tx_frags; | |
375 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)msdu->data; | |
376 | struct ath10k_skb_cb *skb_cb; | |
377 | struct sk_buff *txdesc = NULL; | |
378 | struct sk_buff *txfrag = NULL; | |
379 | u8 vdev_id = ATH10K_SKB_CB(msdu)->htt.vdev_id; | |
380 | u8 tid; | |
381 | int prefetch_len, desc_len, frag_len; | |
382 | dma_addr_t frags_paddr; | |
383 | int msdu_id = -1; | |
384 | int res; | |
385 | u8 flags0; | |
386 | u16 flags1; | |
387 | ||
388 | res = ath10k_htt_tx_inc_pending(htt); | |
389 | if (res) | |
390 | return res; | |
391 | ||
392 | prefetch_len = min(htt->prefetch_len, msdu->len); | |
393 | prefetch_len = roundup(prefetch_len, 4); | |
394 | ||
395 | desc_len = sizeof(cmd->hdr) + sizeof(cmd->data_tx) + prefetch_len; | |
396 | frag_len = sizeof(*tx_frags) * 2; | |
397 | ||
398 | txdesc = ath10k_htc_alloc_skb(desc_len); | |
399 | if (!txdesc) { | |
400 | res = -ENOMEM; | |
401 | goto err; | |
402 | } | |
403 | ||
404 | txfrag = dev_alloc_skb(frag_len); | |
405 | if (!txfrag) { | |
406 | res = -ENOMEM; | |
407 | goto err; | |
408 | } | |
409 | ||
410 | if (!IS_ALIGNED((unsigned long)txdesc->data, 4)) { | |
411 | ath10k_warn("htt alignment check failed. dropping packet.\n"); | |
412 | res = -EIO; | |
413 | goto err; | |
414 | } | |
415 | ||
416 | spin_lock_bh(&htt->tx_lock); | |
417 | msdu_id = ath10k_htt_tx_alloc_msdu_id(htt); | |
418 | if (msdu_id < 0) { | |
419 | spin_unlock_bh(&htt->tx_lock); | |
420 | res = msdu_id; | |
421 | goto err; | |
422 | } | |
423 | htt->pending_tx[msdu_id] = txdesc; | |
424 | spin_unlock_bh(&htt->tx_lock); | |
425 | ||
426 | res = ath10k_skb_map(dev, msdu); | |
427 | if (res) | |
428 | goto err; | |
429 | ||
430 | /* tx fragment list must be terminated with zero-entry */ | |
431 | skb_put(txfrag, frag_len); | |
432 | tx_frags = (struct htt_data_tx_desc_frag *)txfrag->data; | |
433 | tx_frags[0].paddr = __cpu_to_le32(ATH10K_SKB_CB(msdu)->paddr); | |
434 | tx_frags[0].len = __cpu_to_le32(msdu->len); | |
435 | tx_frags[1].paddr = __cpu_to_le32(0); | |
436 | tx_frags[1].len = __cpu_to_le32(0); | |
437 | ||
438 | res = ath10k_skb_map(dev, txfrag); | |
439 | if (res) | |
440 | goto err; | |
441 | ||
442 | ath10k_dbg(ATH10K_DBG_HTT, "txfrag 0x%llx msdu 0x%llx\n", | |
443 | (unsigned long long) ATH10K_SKB_CB(txfrag)->paddr, | |
444 | (unsigned long long) ATH10K_SKB_CB(msdu)->paddr); | |
445 | ath10k_dbg_dump(ATH10K_DBG_HTT_DUMP, NULL, "txfrag: ", | |
446 | txfrag->data, frag_len); | |
447 | ath10k_dbg_dump(ATH10K_DBG_HTT_DUMP, NULL, "msdu: ", | |
448 | msdu->data, msdu->len); | |
449 | ||
450 | skb_put(txdesc, desc_len); | |
451 | cmd = (struct htt_cmd *)txdesc->data; | |
452 | memset(cmd, 0, desc_len); | |
453 | ||
454 | tid = ATH10K_SKB_CB(msdu)->htt.tid; | |
455 | ||
456 | ath10k_dbg(ATH10K_DBG_HTT, "htt data tx using tid %hhu\n", tid); | |
457 | ||
458 | flags0 = 0; | |
459 | if (!ieee80211_has_protected(hdr->frame_control)) | |
460 | flags0 |= HTT_DATA_TX_DESC_FLAGS0_NO_ENCRYPT; | |
461 | flags0 |= HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT; | |
462 | flags0 |= SM(ATH10K_HW_TXRX_NATIVE_WIFI, | |
463 | HTT_DATA_TX_DESC_FLAGS0_PKT_TYPE); | |
464 | ||
465 | flags1 = 0; | |
466 | flags1 |= SM((u16)vdev_id, HTT_DATA_TX_DESC_FLAGS1_VDEV_ID); | |
467 | flags1 |= SM((u16)tid, HTT_DATA_TX_DESC_FLAGS1_EXT_TID); | |
468 | ||
469 | frags_paddr = ATH10K_SKB_CB(txfrag)->paddr; | |
470 | ||
471 | cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_TX_FRM; | |
472 | cmd->data_tx.flags0 = flags0; | |
473 | cmd->data_tx.flags1 = __cpu_to_le16(flags1); | |
474 | cmd->data_tx.len = __cpu_to_le16(msdu->len); | |
475 | cmd->data_tx.id = __cpu_to_le16(msdu_id); | |
476 | cmd->data_tx.frags_paddr = __cpu_to_le32(frags_paddr); | |
477 | cmd->data_tx.peerid = __cpu_to_le32(HTT_INVALID_PEERID); | |
478 | ||
479 | memcpy(cmd->data_tx.prefetch, msdu->data, prefetch_len); | |
480 | ||
481 | /* refcount is decremented by HTC and HTT completions until it reaches | |
482 | * zero and is freed */ | |
483 | skb_cb = ATH10K_SKB_CB(txdesc); | |
484 | skb_cb->htt.msdu_id = msdu_id; | |
485 | skb_cb->htt.refcount = 2; | |
486 | skb_cb->htt.txfrag = txfrag; | |
487 | skb_cb->htt.msdu = msdu; | |
488 | ||
489 | res = ath10k_htc_send(htt->ar->htc, htt->eid, txdesc); | |
490 | if (res) | |
491 | goto err; | |
492 | ||
493 | return 0; | |
494 | err: | |
495 | if (txfrag) | |
496 | ath10k_skb_unmap(dev, txfrag); | |
497 | if (txdesc) | |
498 | dev_kfree_skb_any(txdesc); | |
499 | if (txfrag) | |
500 | dev_kfree_skb_any(txfrag); | |
501 | if (msdu_id >= 0) { | |
502 | spin_lock_bh(&htt->tx_lock); | |
503 | htt->pending_tx[msdu_id] = NULL; | |
504 | ath10k_htt_tx_free_msdu_id(htt, msdu_id); | |
505 | spin_unlock_bh(&htt->tx_lock); | |
506 | } | |
507 | ath10k_htt_tx_dec_pending(htt); | |
508 | ath10k_skb_unmap(dev, msdu); | |
509 | return res; | |
510 | } |