2 * Copyright (c) 2005-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
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.
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.
26 #include <linux/log2.h>
28 #define HTT_RX_RING_SIZE HTT_RX_RING_SIZE_MAX
29 #define HTT_RX_RING_FILL_LEVEL (((HTT_RX_RING_SIZE) / 2) - 1)
31 /* when under memory pressure rx ring refill may fail and needs a retry */
32 #define HTT_RX_RING_REFILL_RETRY_MS 50
34 static int ath10k_htt_rx_get_csum_state(struct sk_buff
*skb
);
35 static void ath10k_htt_txrx_compl_task(unsigned long ptr
);
37 static struct sk_buff
*
38 ath10k_htt_rx_find_skb_paddr(struct ath10k
*ar
, u32 paddr
)
40 struct ath10k_skb_rxcb
*rxcb
;
42 hash_for_each_possible(ar
->htt
.rx_ring
.skb_table
, rxcb
, hlist
, paddr
)
43 if (rxcb
->paddr
== paddr
)
44 return ATH10K_RXCB_SKB(rxcb
);
50 static void ath10k_htt_rx_ring_free(struct ath10k_htt
*htt
)
53 struct ath10k_skb_rxcb
*rxcb
;
57 if (htt
->rx_ring
.in_ord_rx
) {
58 hash_for_each_safe(htt
->rx_ring
.skb_table
, i
, n
, rxcb
, hlist
) {
59 skb
= ATH10K_RXCB_SKB(rxcb
);
60 dma_unmap_single(htt
->ar
->dev
, rxcb
->paddr
,
61 skb
->len
+ skb_tailroom(skb
),
63 hash_del(&rxcb
->hlist
);
64 dev_kfree_skb_any(skb
);
67 for (i
= 0; i
< htt
->rx_ring
.size
; i
++) {
68 skb
= htt
->rx_ring
.netbufs_ring
[i
];
72 rxcb
= ATH10K_SKB_RXCB(skb
);
73 dma_unmap_single(htt
->ar
->dev
, rxcb
->paddr
,
74 skb
->len
+ skb_tailroom(skb
),
76 dev_kfree_skb_any(skb
);
80 htt
->rx_ring
.fill_cnt
= 0;
81 hash_init(htt
->rx_ring
.skb_table
);
82 memset(htt
->rx_ring
.netbufs_ring
, 0,
83 htt
->rx_ring
.size
* sizeof(htt
->rx_ring
.netbufs_ring
[0]));
86 static int __ath10k_htt_rx_ring_fill_n(struct ath10k_htt
*htt
, int num
)
88 struct htt_rx_desc
*rx_desc
;
89 struct ath10k_skb_rxcb
*rxcb
;
94 /* The Full Rx Reorder firmware has no way of telling the host
95 * implicitly when it copied HTT Rx Ring buffers to MAC Rx Ring.
96 * To keep things simple make sure ring is always half empty. This
97 * guarantees there'll be no replenishment overruns possible.
99 BUILD_BUG_ON(HTT_RX_RING_FILL_LEVEL
>= HTT_RX_RING_SIZE
/ 2);
101 idx
= __le32_to_cpu(*htt
->rx_ring
.alloc_idx
.vaddr
);
103 skb
= dev_alloc_skb(HTT_RX_BUF_SIZE
+ HTT_RX_DESC_ALIGN
);
109 if (!IS_ALIGNED((unsigned long)skb
->data
, HTT_RX_DESC_ALIGN
))
111 PTR_ALIGN(skb
->data
, HTT_RX_DESC_ALIGN
) -
114 /* Clear rx_desc attention word before posting to Rx ring */
115 rx_desc
= (struct htt_rx_desc
*)skb
->data
;
116 rx_desc
->attention
.flags
= __cpu_to_le32(0);
118 paddr
= dma_map_single(htt
->ar
->dev
, skb
->data
,
119 skb
->len
+ skb_tailroom(skb
),
122 if (unlikely(dma_mapping_error(htt
->ar
->dev
, paddr
))) {
123 dev_kfree_skb_any(skb
);
128 rxcb
= ATH10K_SKB_RXCB(skb
);
130 htt
->rx_ring
.netbufs_ring
[idx
] = skb
;
131 htt
->rx_ring
.paddrs_ring
[idx
] = __cpu_to_le32(paddr
);
132 htt
->rx_ring
.fill_cnt
++;
134 if (htt
->rx_ring
.in_ord_rx
) {
135 hash_add(htt
->rx_ring
.skb_table
,
136 &ATH10K_SKB_RXCB(skb
)->hlist
,
142 idx
&= htt
->rx_ring
.size_mask
;
147 * Make sure the rx buffer is updated before available buffer
148 * index to avoid any potential rx ring corruption.
151 *htt
->rx_ring
.alloc_idx
.vaddr
= __cpu_to_le32(idx
);
155 static int ath10k_htt_rx_ring_fill_n(struct ath10k_htt
*htt
, int num
)
157 lockdep_assert_held(&htt
->rx_ring
.lock
);
158 return __ath10k_htt_rx_ring_fill_n(htt
, num
);
161 static void ath10k_htt_rx_msdu_buff_replenish(struct ath10k_htt
*htt
)
163 int ret
, num_deficit
, num_to_fill
;
165 /* Refilling the whole RX ring buffer proves to be a bad idea. The
166 * reason is RX may take up significant amount of CPU cycles and starve
167 * other tasks, e.g. TX on an ethernet device while acting as a bridge
168 * with ath10k wlan interface. This ended up with very poor performance
169 * once CPU the host system was overwhelmed with RX on ath10k.
171 * By limiting the number of refills the replenishing occurs
172 * progressively. This in turns makes use of the fact tasklets are
173 * processed in FIFO order. This means actual RX processing can starve
174 * out refilling. If there's not enough buffers on RX ring FW will not
175 * report RX until it is refilled with enough buffers. This
176 * automatically balances load wrt to CPU power.
178 * This probably comes at a cost of lower maximum throughput but
179 * improves the average and stability. */
180 spin_lock_bh(&htt
->rx_ring
.lock
);
181 num_deficit
= htt
->rx_ring
.fill_level
- htt
->rx_ring
.fill_cnt
;
182 num_to_fill
= min(ATH10K_HTT_MAX_NUM_REFILL
, num_deficit
);
183 num_deficit
-= num_to_fill
;
184 ret
= ath10k_htt_rx_ring_fill_n(htt
, num_to_fill
);
185 if (ret
== -ENOMEM
) {
187 * Failed to fill it to the desired level -
188 * we'll start a timer and try again next time.
189 * As long as enough buffers are left in the ring for
190 * another A-MPDU rx, no special recovery is needed.
192 mod_timer(&htt
->rx_ring
.refill_retry_timer
, jiffies
+
193 msecs_to_jiffies(HTT_RX_RING_REFILL_RETRY_MS
));
194 } else if (num_deficit
> 0) {
195 tasklet_schedule(&htt
->rx_replenish_task
);
197 spin_unlock_bh(&htt
->rx_ring
.lock
);
200 static void ath10k_htt_rx_ring_refill_retry(unsigned long arg
)
202 struct ath10k_htt
*htt
= (struct ath10k_htt
*)arg
;
204 ath10k_htt_rx_msdu_buff_replenish(htt
);
207 int ath10k_htt_rx_ring_refill(struct ath10k
*ar
)
209 struct ath10k_htt
*htt
= &ar
->htt
;
212 spin_lock_bh(&htt
->rx_ring
.lock
);
213 ret
= ath10k_htt_rx_ring_fill_n(htt
, (htt
->rx_ring
.fill_level
-
214 htt
->rx_ring
.fill_cnt
));
215 spin_unlock_bh(&htt
->rx_ring
.lock
);
218 ath10k_htt_rx_ring_free(htt
);
223 void ath10k_htt_rx_free(struct ath10k_htt
*htt
)
225 del_timer_sync(&htt
->rx_ring
.refill_retry_timer
);
226 tasklet_kill(&htt
->rx_replenish_task
);
227 tasklet_kill(&htt
->txrx_compl_task
);
229 skb_queue_purge(&htt
->tx_compl_q
);
230 skb_queue_purge(&htt
->rx_compl_q
);
231 skb_queue_purge(&htt
->rx_in_ord_compl_q
);
233 ath10k_htt_rx_ring_free(htt
);
235 dma_free_coherent(htt
->ar
->dev
,
237 sizeof(htt
->rx_ring
.paddrs_ring
)),
238 htt
->rx_ring
.paddrs_ring
,
239 htt
->rx_ring
.base_paddr
);
241 dma_free_coherent(htt
->ar
->dev
,
242 sizeof(*htt
->rx_ring
.alloc_idx
.vaddr
),
243 htt
->rx_ring
.alloc_idx
.vaddr
,
244 htt
->rx_ring
.alloc_idx
.paddr
);
246 kfree(htt
->rx_ring
.netbufs_ring
);
249 static inline struct sk_buff
*ath10k_htt_rx_netbuf_pop(struct ath10k_htt
*htt
)
251 struct ath10k
*ar
= htt
->ar
;
253 struct sk_buff
*msdu
;
255 lockdep_assert_held(&htt
->rx_ring
.lock
);
257 if (htt
->rx_ring
.fill_cnt
== 0) {
258 ath10k_warn(ar
, "tried to pop sk_buff from an empty rx ring\n");
262 idx
= htt
->rx_ring
.sw_rd_idx
.msdu_payld
;
263 msdu
= htt
->rx_ring
.netbufs_ring
[idx
];
264 htt
->rx_ring
.netbufs_ring
[idx
] = NULL
;
265 htt
->rx_ring
.paddrs_ring
[idx
] = 0;
268 idx
&= htt
->rx_ring
.size_mask
;
269 htt
->rx_ring
.sw_rd_idx
.msdu_payld
= idx
;
270 htt
->rx_ring
.fill_cnt
--;
272 dma_unmap_single(htt
->ar
->dev
,
273 ATH10K_SKB_RXCB(msdu
)->paddr
,
274 msdu
->len
+ skb_tailroom(msdu
),
276 ath10k_dbg_dump(ar
, ATH10K_DBG_HTT_DUMP
, NULL
, "htt rx netbuf pop: ",
277 msdu
->data
, msdu
->len
+ skb_tailroom(msdu
));
282 /* return: < 0 fatal error, 0 - non chained msdu, 1 chained msdu */
283 static int ath10k_htt_rx_amsdu_pop(struct ath10k_htt
*htt
,
284 u8
**fw_desc
, int *fw_desc_len
,
285 struct sk_buff_head
*amsdu
)
287 struct ath10k
*ar
= htt
->ar
;
288 int msdu_len
, msdu_chaining
= 0;
289 struct sk_buff
*msdu
;
290 struct htt_rx_desc
*rx_desc
;
292 lockdep_assert_held(&htt
->rx_ring
.lock
);
295 int last_msdu
, msdu_len_invalid
, msdu_chained
;
297 msdu
= ath10k_htt_rx_netbuf_pop(htt
);
299 __skb_queue_purge(amsdu
);
303 __skb_queue_tail(amsdu
, msdu
);
305 rx_desc
= (struct htt_rx_desc
*)msdu
->data
;
307 /* FIXME: we must report msdu payload since this is what caller
309 skb_put(msdu
, offsetof(struct htt_rx_desc
, msdu_payload
));
310 skb_pull(msdu
, offsetof(struct htt_rx_desc
, msdu_payload
));
313 * Sanity check - confirm the HW is finished filling in the
315 * If the HW and SW are working correctly, then it's guaranteed
316 * that the HW's MAC DMA is done before this point in the SW.
317 * To prevent the case that we handle a stale Rx descriptor,
318 * just assert for now until we have a way to recover.
320 if (!(__le32_to_cpu(rx_desc
->attention
.flags
)
321 & RX_ATTENTION_FLAGS_MSDU_DONE
)) {
322 __skb_queue_purge(amsdu
);
327 * Copy the FW rx descriptor for this MSDU from the rx
328 * indication message into the MSDU's netbuf. HL uses the
329 * same rx indication message definition as LL, and simply
330 * appends new info (fields from the HW rx desc, and the
331 * MSDU payload itself). So, the offset into the rx
332 * indication message only has to account for the standard
333 * offset of the per-MSDU FW rx desc info within the
334 * message, and how many bytes of the per-MSDU FW rx desc
335 * info have already been consumed. (And the endianness of
336 * the host, since for a big-endian host, the rx ind
337 * message contents, including the per-MSDU rx desc bytes,
338 * were byteswapped during upload.)
340 if (*fw_desc_len
> 0) {
341 rx_desc
->fw_desc
.info0
= **fw_desc
;
343 * The target is expected to only provide the basic
344 * per-MSDU rx descriptors. Just to be sure, verify
345 * that the target has not attached extension data
346 * (e.g. LRO flow ID).
349 /* or more, if there's extension data */
354 * When an oversized AMSDU happened, FW will lost
355 * some of MSDU status - in this case, the FW
356 * descriptors provided will be less than the
357 * actual MSDUs inside this MPDU. Mark the FW
358 * descriptors so that it will still deliver to
359 * upper stack, if no CRC error for this MPDU.
361 * FIX THIS - the FW descriptors are actually for
362 * MSDUs in the end of this A-MSDU instead of the
365 rx_desc
->fw_desc
.info0
= 0;
368 msdu_len_invalid
= !!(__le32_to_cpu(rx_desc
->attention
.flags
)
369 & (RX_ATTENTION_FLAGS_MPDU_LENGTH_ERR
|
370 RX_ATTENTION_FLAGS_MSDU_LENGTH_ERR
));
371 msdu_len
= MS(__le32_to_cpu(rx_desc
->msdu_start
.common
.info0
),
372 RX_MSDU_START_INFO0_MSDU_LENGTH
);
373 msdu_chained
= rx_desc
->frag_info
.ring2_more_count
;
375 if (msdu_len_invalid
)
379 skb_put(msdu
, min(msdu_len
, HTT_RX_MSDU_SIZE
));
380 msdu_len
-= msdu
->len
;
382 /* Note: Chained buffers do not contain rx descriptor */
383 while (msdu_chained
--) {
384 msdu
= ath10k_htt_rx_netbuf_pop(htt
);
386 __skb_queue_purge(amsdu
);
390 __skb_queue_tail(amsdu
, msdu
);
392 skb_put(msdu
, min(msdu_len
, HTT_RX_BUF_SIZE
));
393 msdu_len
-= msdu
->len
;
397 last_msdu
= __le32_to_cpu(rx_desc
->msdu_end
.common
.info0
) &
398 RX_MSDU_END_INFO0_LAST_MSDU
;
400 trace_ath10k_htt_rx_desc(ar
, &rx_desc
->attention
,
401 sizeof(*rx_desc
) - sizeof(u32
));
407 if (skb_queue_empty(amsdu
))
411 * Don't refill the ring yet.
413 * First, the elements popped here are still in use - it is not
414 * safe to overwrite them until the matching call to
415 * mpdu_desc_list_next. Second, for efficiency it is preferable to
416 * refill the rx ring with 1 PPDU's worth of rx buffers (something
417 * like 32 x 3 buffers), rather than one MPDU's worth of rx buffers
418 * (something like 3 buffers). Consequently, we'll rely on the txrx
419 * SW to tell us when it is done pulling all the PPDU's rx buffers
420 * out of the rx ring, and then refill it just once.
423 return msdu_chaining
;
426 static void ath10k_htt_rx_replenish_task(unsigned long ptr
)
428 struct ath10k_htt
*htt
= (struct ath10k_htt
*)ptr
;
430 ath10k_htt_rx_msdu_buff_replenish(htt
);
433 static struct sk_buff
*ath10k_htt_rx_pop_paddr(struct ath10k_htt
*htt
,
436 struct ath10k
*ar
= htt
->ar
;
437 struct ath10k_skb_rxcb
*rxcb
;
438 struct sk_buff
*msdu
;
440 lockdep_assert_held(&htt
->rx_ring
.lock
);
442 msdu
= ath10k_htt_rx_find_skb_paddr(ar
, paddr
);
446 rxcb
= ATH10K_SKB_RXCB(msdu
);
447 hash_del(&rxcb
->hlist
);
448 htt
->rx_ring
.fill_cnt
--;
450 dma_unmap_single(htt
->ar
->dev
, rxcb
->paddr
,
451 msdu
->len
+ skb_tailroom(msdu
),
453 ath10k_dbg_dump(ar
, ATH10K_DBG_HTT_DUMP
, NULL
, "htt rx netbuf pop: ",
454 msdu
->data
, msdu
->len
+ skb_tailroom(msdu
));
459 static int ath10k_htt_rx_pop_paddr_list(struct ath10k_htt
*htt
,
460 struct htt_rx_in_ord_ind
*ev
,
461 struct sk_buff_head
*list
)
463 struct ath10k
*ar
= htt
->ar
;
464 struct htt_rx_in_ord_msdu_desc
*msdu_desc
= ev
->msdu_descs
;
465 struct htt_rx_desc
*rxd
;
466 struct sk_buff
*msdu
;
471 lockdep_assert_held(&htt
->rx_ring
.lock
);
473 msdu_count
= __le16_to_cpu(ev
->msdu_count
);
474 is_offload
= !!(ev
->info
& HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK
);
476 while (msdu_count
--) {
477 paddr
= __le32_to_cpu(msdu_desc
->msdu_paddr
);
479 msdu
= ath10k_htt_rx_pop_paddr(htt
, paddr
);
481 __skb_queue_purge(list
);
485 __skb_queue_tail(list
, msdu
);
488 rxd
= (void *)msdu
->data
;
490 trace_ath10k_htt_rx_desc(ar
, rxd
, sizeof(*rxd
));
492 skb_put(msdu
, sizeof(*rxd
));
493 skb_pull(msdu
, sizeof(*rxd
));
494 skb_put(msdu
, __le16_to_cpu(msdu_desc
->msdu_len
));
496 if (!(__le32_to_cpu(rxd
->attention
.flags
) &
497 RX_ATTENTION_FLAGS_MSDU_DONE
)) {
498 ath10k_warn(htt
->ar
, "tried to pop an incomplete frame, oops!\n");
509 int ath10k_htt_rx_alloc(struct ath10k_htt
*htt
)
511 struct ath10k
*ar
= htt
->ar
;
515 struct timer_list
*timer
= &htt
->rx_ring
.refill_retry_timer
;
517 htt
->rx_confused
= false;
519 /* XXX: The fill level could be changed during runtime in response to
520 * the host processing latency. Is this really worth it?
522 htt
->rx_ring
.size
= HTT_RX_RING_SIZE
;
523 htt
->rx_ring
.size_mask
= htt
->rx_ring
.size
- 1;
524 htt
->rx_ring
.fill_level
= HTT_RX_RING_FILL_LEVEL
;
526 if (!is_power_of_2(htt
->rx_ring
.size
)) {
527 ath10k_warn(ar
, "htt rx ring size is not power of 2\n");
531 htt
->rx_ring
.netbufs_ring
=
532 kzalloc(htt
->rx_ring
.size
* sizeof(struct sk_buff
*),
534 if (!htt
->rx_ring
.netbufs_ring
)
537 size
= htt
->rx_ring
.size
* sizeof(htt
->rx_ring
.paddrs_ring
);
539 vaddr
= dma_alloc_coherent(htt
->ar
->dev
, size
, &paddr
, GFP_DMA
);
543 htt
->rx_ring
.paddrs_ring
= vaddr
;
544 htt
->rx_ring
.base_paddr
= paddr
;
546 vaddr
= dma_alloc_coherent(htt
->ar
->dev
,
547 sizeof(*htt
->rx_ring
.alloc_idx
.vaddr
),
552 htt
->rx_ring
.alloc_idx
.vaddr
= vaddr
;
553 htt
->rx_ring
.alloc_idx
.paddr
= paddr
;
554 htt
->rx_ring
.sw_rd_idx
.msdu_payld
= htt
->rx_ring
.size_mask
;
555 *htt
->rx_ring
.alloc_idx
.vaddr
= 0;
557 /* Initialize the Rx refill retry timer */
558 setup_timer(timer
, ath10k_htt_rx_ring_refill_retry
, (unsigned long)htt
);
560 spin_lock_init(&htt
->rx_ring
.lock
);
562 htt
->rx_ring
.fill_cnt
= 0;
563 htt
->rx_ring
.sw_rd_idx
.msdu_payld
= 0;
564 hash_init(htt
->rx_ring
.skb_table
);
566 tasklet_init(&htt
->rx_replenish_task
, ath10k_htt_rx_replenish_task
,
569 skb_queue_head_init(&htt
->tx_compl_q
);
570 skb_queue_head_init(&htt
->rx_compl_q
);
571 skb_queue_head_init(&htt
->rx_in_ord_compl_q
);
573 tasklet_init(&htt
->txrx_compl_task
, ath10k_htt_txrx_compl_task
,
576 ath10k_dbg(ar
, ATH10K_DBG_BOOT
, "htt rx ring size %d fill_level %d\n",
577 htt
->rx_ring
.size
, htt
->rx_ring
.fill_level
);
581 dma_free_coherent(htt
->ar
->dev
,
583 sizeof(htt
->rx_ring
.paddrs_ring
)),
584 htt
->rx_ring
.paddrs_ring
,
585 htt
->rx_ring
.base_paddr
);
587 kfree(htt
->rx_ring
.netbufs_ring
);
592 static int ath10k_htt_rx_crypto_param_len(struct ath10k
*ar
,
593 enum htt_rx_mpdu_encrypt_type type
)
596 case HTT_RX_MPDU_ENCRYPT_NONE
:
598 case HTT_RX_MPDU_ENCRYPT_WEP40
:
599 case HTT_RX_MPDU_ENCRYPT_WEP104
:
600 return IEEE80211_WEP_IV_LEN
;
601 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC
:
602 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA
:
603 return IEEE80211_TKIP_IV_LEN
;
604 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2
:
605 return IEEE80211_CCMP_HDR_LEN
;
606 case HTT_RX_MPDU_ENCRYPT_WEP128
:
607 case HTT_RX_MPDU_ENCRYPT_WAPI
:
611 ath10k_warn(ar
, "unsupported encryption type %d\n", type
);
615 #define MICHAEL_MIC_LEN 8
617 static int ath10k_htt_rx_crypto_tail_len(struct ath10k
*ar
,
618 enum htt_rx_mpdu_encrypt_type type
)
621 case HTT_RX_MPDU_ENCRYPT_NONE
:
623 case HTT_RX_MPDU_ENCRYPT_WEP40
:
624 case HTT_RX_MPDU_ENCRYPT_WEP104
:
625 return IEEE80211_WEP_ICV_LEN
;
626 case HTT_RX_MPDU_ENCRYPT_TKIP_WITHOUT_MIC
:
627 case HTT_RX_MPDU_ENCRYPT_TKIP_WPA
:
628 return IEEE80211_TKIP_ICV_LEN
;
629 case HTT_RX_MPDU_ENCRYPT_AES_CCM_WPA2
:
630 return IEEE80211_CCMP_MIC_LEN
;
631 case HTT_RX_MPDU_ENCRYPT_WEP128
:
632 case HTT_RX_MPDU_ENCRYPT_WAPI
:
636 ath10k_warn(ar
, "unsupported encryption type %d\n", type
);
640 struct amsdu_subframe_hdr
{
646 #define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63)
648 static void ath10k_htt_rx_h_rates(struct ath10k
*ar
,
649 struct ieee80211_rx_status
*status
,
650 struct htt_rx_desc
*rxd
)
652 struct ieee80211_supported_band
*sband
;
653 u8 cck
, rate
, bw
, sgi
, mcs
, nss
;
656 u32 info1
, info2
, info3
;
658 info1
= __le32_to_cpu(rxd
->ppdu_start
.info1
);
659 info2
= __le32_to_cpu(rxd
->ppdu_start
.info2
);
660 info3
= __le32_to_cpu(rxd
->ppdu_start
.info3
);
662 preamble
= MS(info1
, RX_PPDU_START_INFO1_PREAMBLE_TYPE
);
666 /* To get legacy rate index band is required. Since band can't
667 * be undefined check if freq is non-zero.
672 cck
= info1
& RX_PPDU_START_INFO1_L_SIG_RATE_SELECT
;
673 rate
= MS(info1
, RX_PPDU_START_INFO1_L_SIG_RATE
);
674 rate
&= ~RX_PPDU_START_RATE_FLAG
;
676 sband
= &ar
->mac
.sbands
[status
->band
];
677 status
->rate_idx
= ath10k_mac_hw_rate_to_idx(sband
, rate
);
680 case HTT_RX_HT_WITH_TXBF
:
681 /* HT-SIG - Table 20-11 in info2 and info3 */
684 bw
= (info2
>> 7) & 1;
685 sgi
= (info3
>> 7) & 1;
687 status
->rate_idx
= mcs
;
688 status
->flag
|= RX_FLAG_HT
;
690 status
->flag
|= RX_FLAG_SHORT_GI
;
692 status
->flag
|= RX_FLAG_40MHZ
;
695 case HTT_RX_VHT_WITH_TXBF
:
696 /* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3
700 group_id
= (info2
>> 4) & 0x3F;
702 if (GROUP_ID_IS_SU_MIMO(group_id
)) {
703 mcs
= (info3
>> 4) & 0x0F;
704 nss
= ((info2
>> 10) & 0x07) + 1;
706 /* Hardware doesn't decode VHT-SIG-B into Rx descriptor
707 * so it's impossible to decode MCS. Also since
708 * firmware consumes Group Id Management frames host
709 * has no knowledge regarding group/user position
710 * mapping so it's impossible to pick the correct Nsts
713 * Bandwidth and SGI are valid so report the rateinfo
714 * on best-effort basis.
721 ath10k_warn(ar
, "invalid MCS received %u\n", mcs
);
722 ath10k_warn(ar
, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n",
723 __le32_to_cpu(rxd
->attention
.flags
),
724 __le32_to_cpu(rxd
->mpdu_start
.info0
),
725 __le32_to_cpu(rxd
->mpdu_start
.info1
),
726 __le32_to_cpu(rxd
->msdu_start
.common
.info0
),
727 __le32_to_cpu(rxd
->msdu_start
.common
.info1
),
728 rxd
->ppdu_start
.info0
,
729 __le32_to_cpu(rxd
->ppdu_start
.info1
),
730 __le32_to_cpu(rxd
->ppdu_start
.info2
),
731 __le32_to_cpu(rxd
->ppdu_start
.info3
),
732 __le32_to_cpu(rxd
->ppdu_start
.info4
));
734 ath10k_warn(ar
, "msdu end %08x mpdu end %08x\n",
735 __le32_to_cpu(rxd
->msdu_end
.common
.info0
),
736 __le32_to_cpu(rxd
->mpdu_end
.info0
));
738 ath10k_dbg_dump(ar
, ATH10K_DBG_HTT_DUMP
, NULL
,
739 "rx desc msdu payload: ",
740 rxd
->msdu_payload
, 50);
743 status
->rate_idx
= mcs
;
744 status
->vht_nss
= nss
;
747 status
->flag
|= RX_FLAG_SHORT_GI
;
755 status
->flag
|= RX_FLAG_40MHZ
;
759 status
->vht_flag
|= RX_VHT_FLAG_80MHZ
;
762 status
->flag
|= RX_FLAG_VHT
;
769 static struct ieee80211_channel
*
770 ath10k_htt_rx_h_peer_channel(struct ath10k
*ar
, struct htt_rx_desc
*rxd
)
772 struct ath10k_peer
*peer
;
773 struct ath10k_vif
*arvif
;
774 struct cfg80211_chan_def def
;
777 lockdep_assert_held(&ar
->data_lock
);
782 if (rxd
->attention
.flags
&
783 __cpu_to_le32(RX_ATTENTION_FLAGS_PEER_IDX_INVALID
))
786 if (!(rxd
->msdu_end
.common
.info0
&
787 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU
)))
790 peer_id
= MS(__le32_to_cpu(rxd
->mpdu_start
.info0
),
791 RX_MPDU_START_INFO0_PEER_IDX
);
793 peer
= ath10k_peer_find_by_id(ar
, peer_id
);
797 arvif
= ath10k_get_arvif(ar
, peer
->vdev_id
);
798 if (WARN_ON_ONCE(!arvif
))
801 if (WARN_ON(ath10k_mac_vif_chan(arvif
->vif
, &def
)))
807 static struct ieee80211_channel
*
808 ath10k_htt_rx_h_vdev_channel(struct ath10k
*ar
, u32 vdev_id
)
810 struct ath10k_vif
*arvif
;
811 struct cfg80211_chan_def def
;
813 lockdep_assert_held(&ar
->data_lock
);
815 list_for_each_entry(arvif
, &ar
->arvifs
, list
) {
816 if (arvif
->vdev_id
== vdev_id
&&
817 ath10k_mac_vif_chan(arvif
->vif
, &def
) == 0)
825 ath10k_htt_rx_h_any_chan_iter(struct ieee80211_hw
*hw
,
826 struct ieee80211_chanctx_conf
*conf
,
829 struct cfg80211_chan_def
*def
= data
;
834 static struct ieee80211_channel
*
835 ath10k_htt_rx_h_any_channel(struct ath10k
*ar
)
837 struct cfg80211_chan_def def
= {};
839 ieee80211_iter_chan_contexts_atomic(ar
->hw
,
840 ath10k_htt_rx_h_any_chan_iter
,
846 static bool ath10k_htt_rx_h_channel(struct ath10k
*ar
,
847 struct ieee80211_rx_status
*status
,
848 struct htt_rx_desc
*rxd
,
851 struct ieee80211_channel
*ch
;
853 spin_lock_bh(&ar
->data_lock
);
854 ch
= ar
->scan_channel
;
858 ch
= ath10k_htt_rx_h_peer_channel(ar
, rxd
);
860 ch
= ath10k_htt_rx_h_vdev_channel(ar
, vdev_id
);
862 ch
= ath10k_htt_rx_h_any_channel(ar
);
863 spin_unlock_bh(&ar
->data_lock
);
868 status
->band
= ch
->band
;
869 status
->freq
= ch
->center_freq
;
874 static void ath10k_htt_rx_h_signal(struct ath10k
*ar
,
875 struct ieee80211_rx_status
*status
,
876 struct htt_rx_desc
*rxd
)
878 /* FIXME: Get real NF */
879 status
->signal
= ATH10K_DEFAULT_NOISE_FLOOR
+
880 rxd
->ppdu_start
.rssi_comb
;
881 status
->flag
&= ~RX_FLAG_NO_SIGNAL_VAL
;
884 static void ath10k_htt_rx_h_mactime(struct ath10k
*ar
,
885 struct ieee80211_rx_status
*status
,
886 struct htt_rx_desc
*rxd
)
888 /* FIXME: TSF is known only at the end of PPDU, in the last MPDU. This
889 * means all prior MSDUs in a PPDU are reported to mac80211 without the
890 * TSF. Is it worth holding frames until end of PPDU is known?
892 * FIXME: Can we get/compute 64bit TSF?
894 status
->mactime
= __le32_to_cpu(rxd
->ppdu_end
.common
.tsf_timestamp
);
895 status
->flag
|= RX_FLAG_MACTIME_END
;
898 static void ath10k_htt_rx_h_ppdu(struct ath10k
*ar
,
899 struct sk_buff_head
*amsdu
,
900 struct ieee80211_rx_status
*status
,
903 struct sk_buff
*first
;
904 struct htt_rx_desc
*rxd
;
908 if (skb_queue_empty(amsdu
))
911 first
= skb_peek(amsdu
);
912 rxd
= (void *)first
->data
- sizeof(*rxd
);
914 is_first_ppdu
= !!(rxd
->attention
.flags
&
915 __cpu_to_le32(RX_ATTENTION_FLAGS_FIRST_MPDU
));
916 is_last_ppdu
= !!(rxd
->attention
.flags
&
917 __cpu_to_le32(RX_ATTENTION_FLAGS_LAST_MPDU
));
920 /* New PPDU starts so clear out the old per-PPDU status. */
922 status
->rate_idx
= 0;
924 status
->vht_flag
&= ~RX_VHT_FLAG_80MHZ
;
925 status
->flag
&= ~(RX_FLAG_HT
|
929 RX_FLAG_MACTIME_END
);
930 status
->flag
|= RX_FLAG_NO_SIGNAL_VAL
;
932 ath10k_htt_rx_h_signal(ar
, status
, rxd
);
933 ath10k_htt_rx_h_channel(ar
, status
, rxd
, vdev_id
);
934 ath10k_htt_rx_h_rates(ar
, status
, rxd
);
938 ath10k_htt_rx_h_mactime(ar
, status
, rxd
);
941 static const char * const tid_to_ac
[] = {
952 static char *ath10k_get_tid(struct ieee80211_hdr
*hdr
, char *out
, size_t size
)
957 if (!ieee80211_is_data_qos(hdr
->frame_control
))
960 qc
= ieee80211_get_qos_ctl(hdr
);
961 tid
= *qc
& IEEE80211_QOS_CTL_TID_MASK
;
963 snprintf(out
, size
, "tid %d (%s)", tid
, tid_to_ac
[tid
]);
965 snprintf(out
, size
, "tid %d", tid
);
970 static void ath10k_process_rx(struct ath10k
*ar
,
971 struct ieee80211_rx_status
*rx_status
,
974 struct ieee80211_rx_status
*status
;
975 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
978 status
= IEEE80211_SKB_RXCB(skb
);
979 *status
= *rx_status
;
981 ath10k_dbg(ar
, ATH10K_DBG_DATA
,
982 "rx skb %p len %u peer %pM %s %s sn %u %s%s%s%s%s %srate_idx %u vht_nss %u freq %u band %u flag 0x%x fcs-err %i mic-err %i amsdu-more %i\n",
985 ieee80211_get_SA(hdr
),
986 ath10k_get_tid(hdr
, tid
, sizeof(tid
)),
987 is_multicast_ether_addr(ieee80211_get_DA(hdr
)) ?
989 (__le16_to_cpu(hdr
->seq_ctrl
) & IEEE80211_SCTL_SEQ
) >> 4,
990 status
->flag
== 0 ? "legacy" : "",
991 status
->flag
& RX_FLAG_HT
? "ht" : "",
992 status
->flag
& RX_FLAG_VHT
? "vht" : "",
993 status
->flag
& RX_FLAG_40MHZ
? "40" : "",
994 status
->vht_flag
& RX_VHT_FLAG_80MHZ
? "80" : "",
995 status
->flag
& RX_FLAG_SHORT_GI
? "sgi " : "",
999 status
->band
, status
->flag
,
1000 !!(status
->flag
& RX_FLAG_FAILED_FCS_CRC
),
1001 !!(status
->flag
& RX_FLAG_MMIC_ERROR
),
1002 !!(status
->flag
& RX_FLAG_AMSDU_MORE
));
1003 ath10k_dbg_dump(ar
, ATH10K_DBG_HTT_DUMP
, NULL
, "rx skb: ",
1004 skb
->data
, skb
->len
);
1005 trace_ath10k_rx_hdr(ar
, skb
->data
, skb
->len
);
1006 trace_ath10k_rx_payload(ar
, skb
->data
, skb
->len
);
1008 ieee80211_rx(ar
->hw
, skb
);
1011 static int ath10k_htt_rx_nwifi_hdrlen(struct ath10k
*ar
,
1012 struct ieee80211_hdr
*hdr
)
1014 int len
= ieee80211_hdrlen(hdr
->frame_control
);
1016 if (!test_bit(ATH10K_FW_FEATURE_NO_NWIFI_DECAP_4ADDR_PADDING
,
1018 len
= round_up(len
, 4);
1023 static void ath10k_htt_rx_h_undecap_raw(struct ath10k
*ar
,
1024 struct sk_buff
*msdu
,
1025 struct ieee80211_rx_status
*status
,
1026 enum htt_rx_mpdu_encrypt_type enctype
,
1029 struct ieee80211_hdr
*hdr
;
1030 struct htt_rx_desc
*rxd
;
1036 rxd
= (void *)msdu
->data
- sizeof(*rxd
);
1037 is_first
= !!(rxd
->msdu_end
.common
.info0
&
1038 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU
));
1039 is_last
= !!(rxd
->msdu_end
.common
.info0
&
1040 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU
));
1042 /* Delivered decapped frame:
1044 * [crypto param] <-- can be trimmed if !fcs_err &&
1045 * !decrypt_err && !peer_idx_invalid
1046 * [amsdu header] <-- only if A-MSDU
1049 * [FCS] <-- at end, needs to be trimmed
1052 /* This probably shouldn't happen but warn just in case */
1053 if (unlikely(WARN_ON_ONCE(!is_first
)))
1056 /* This probably shouldn't happen but warn just in case */
1057 if (unlikely(WARN_ON_ONCE(!(is_first
&& is_last
))))
1060 skb_trim(msdu
, msdu
->len
- FCS_LEN
);
1062 /* In most cases this will be true for sniffed frames. It makes sense
1063 * to deliver them as-is without stripping the crypto param. This is
1064 * necessary for software based decryption.
1066 * If there's no error then the frame is decrypted. At least that is
1067 * the case for frames that come in via fragmented rx indication.
1072 /* The payload is decrypted so strip crypto params. Start from tail
1073 * since hdr is used to compute some stuff.
1076 hdr
= (void *)msdu
->data
;
1079 skb_trim(msdu
, msdu
->len
- ath10k_htt_rx_crypto_tail_len(ar
, enctype
));
1082 if (!ieee80211_has_morefrags(hdr
->frame_control
) &&
1083 enctype
== HTT_RX_MPDU_ENCRYPT_TKIP_WPA
)
1084 skb_trim(msdu
, msdu
->len
- 8);
1087 hdr_len
= ieee80211_hdrlen(hdr
->frame_control
);
1088 crypto_len
= ath10k_htt_rx_crypto_param_len(ar
, enctype
);
1090 memmove((void *)msdu
->data
+ crypto_len
,
1091 (void *)msdu
->data
, hdr_len
);
1092 skb_pull(msdu
, crypto_len
);
1095 static void ath10k_htt_rx_h_undecap_nwifi(struct ath10k
*ar
,
1096 struct sk_buff
*msdu
,
1097 struct ieee80211_rx_status
*status
,
1098 const u8 first_hdr
[64])
1100 struct ieee80211_hdr
*hdr
;
1105 /* Delivered decapped frame:
1106 * [nwifi 802.11 header] <-- replaced with 802.11 hdr
1109 * Note: The nwifi header doesn't have QoS Control and is
1110 * (always?) a 3addr frame.
1112 * Note2: There's no A-MSDU subframe header. Even if it's part
1116 /* pull decapped header and copy SA & DA */
1117 hdr
= (struct ieee80211_hdr
*)msdu
->data
;
1118 hdr_len
= ath10k_htt_rx_nwifi_hdrlen(ar
, hdr
);
1119 ether_addr_copy(da
, ieee80211_get_DA(hdr
));
1120 ether_addr_copy(sa
, ieee80211_get_SA(hdr
));
1121 skb_pull(msdu
, hdr_len
);
1123 /* push original 802.11 header */
1124 hdr
= (struct ieee80211_hdr
*)first_hdr
;
1125 hdr_len
= ieee80211_hdrlen(hdr
->frame_control
);
1126 memcpy(skb_push(msdu
, hdr_len
), hdr
, hdr_len
);
1128 /* original 802.11 header has a different DA and in
1129 * case of 4addr it may also have different SA
1131 hdr
= (struct ieee80211_hdr
*)msdu
->data
;
1132 ether_addr_copy(ieee80211_get_DA(hdr
), da
);
1133 ether_addr_copy(ieee80211_get_SA(hdr
), sa
);
1136 static void *ath10k_htt_rx_h_find_rfc1042(struct ath10k
*ar
,
1137 struct sk_buff
*msdu
,
1138 enum htt_rx_mpdu_encrypt_type enctype
)
1140 struct ieee80211_hdr
*hdr
;
1141 struct htt_rx_desc
*rxd
;
1142 size_t hdr_len
, crypto_len
;
1144 bool is_first
, is_last
, is_amsdu
;
1146 rxd
= (void *)msdu
->data
- sizeof(*rxd
);
1147 hdr
= (void *)rxd
->rx_hdr_status
;
1149 is_first
= !!(rxd
->msdu_end
.common
.info0
&
1150 __cpu_to_le32(RX_MSDU_END_INFO0_FIRST_MSDU
));
1151 is_last
= !!(rxd
->msdu_end
.common
.info0
&
1152 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU
));
1153 is_amsdu
= !(is_first
&& is_last
);
1158 hdr_len
= ieee80211_hdrlen(hdr
->frame_control
);
1159 crypto_len
= ath10k_htt_rx_crypto_param_len(ar
, enctype
);
1161 rfc1042
+= round_up(hdr_len
, 4) +
1162 round_up(crypto_len
, 4);
1166 rfc1042
+= sizeof(struct amsdu_subframe_hdr
);
1171 static void ath10k_htt_rx_h_undecap_eth(struct ath10k
*ar
,
1172 struct sk_buff
*msdu
,
1173 struct ieee80211_rx_status
*status
,
1174 const u8 first_hdr
[64],
1175 enum htt_rx_mpdu_encrypt_type enctype
)
1177 struct ieee80211_hdr
*hdr
;
1184 /* Delivered decapped frame:
1185 * [eth header] <-- replaced with 802.11 hdr & rfc1042/llc
1189 rfc1042
= ath10k_htt_rx_h_find_rfc1042(ar
, msdu
, enctype
);
1190 if (WARN_ON_ONCE(!rfc1042
))
1193 /* pull decapped header and copy SA & DA */
1194 eth
= (struct ethhdr
*)msdu
->data
;
1195 ether_addr_copy(da
, eth
->h_dest
);
1196 ether_addr_copy(sa
, eth
->h_source
);
1197 skb_pull(msdu
, sizeof(struct ethhdr
));
1199 /* push rfc1042/llc/snap */
1200 memcpy(skb_push(msdu
, sizeof(struct rfc1042_hdr
)), rfc1042
,
1201 sizeof(struct rfc1042_hdr
));
1203 /* push original 802.11 header */
1204 hdr
= (struct ieee80211_hdr
*)first_hdr
;
1205 hdr_len
= ieee80211_hdrlen(hdr
->frame_control
);
1206 memcpy(skb_push(msdu
, hdr_len
), hdr
, hdr_len
);
1208 /* original 802.11 header has a different DA and in
1209 * case of 4addr it may also have different SA
1211 hdr
= (struct ieee80211_hdr
*)msdu
->data
;
1212 ether_addr_copy(ieee80211_get_DA(hdr
), da
);
1213 ether_addr_copy(ieee80211_get_SA(hdr
), sa
);
1216 static void ath10k_htt_rx_h_undecap_snap(struct ath10k
*ar
,
1217 struct sk_buff
*msdu
,
1218 struct ieee80211_rx_status
*status
,
1219 const u8 first_hdr
[64])
1221 struct ieee80211_hdr
*hdr
;
1224 /* Delivered decapped frame:
1225 * [amsdu header] <-- replaced with 802.11 hdr
1230 skb_pull(msdu
, sizeof(struct amsdu_subframe_hdr
));
1232 hdr
= (struct ieee80211_hdr
*)first_hdr
;
1233 hdr_len
= ieee80211_hdrlen(hdr
->frame_control
);
1234 memcpy(skb_push(msdu
, hdr_len
), hdr
, hdr_len
);
1237 static void ath10k_htt_rx_h_undecap(struct ath10k
*ar
,
1238 struct sk_buff
*msdu
,
1239 struct ieee80211_rx_status
*status
,
1241 enum htt_rx_mpdu_encrypt_type enctype
,
1244 struct htt_rx_desc
*rxd
;
1245 enum rx_msdu_decap_format decap
;
1247 /* First msdu's decapped header:
1248 * [802.11 header] <-- padded to 4 bytes long
1249 * [crypto param] <-- padded to 4 bytes long
1250 * [amsdu header] <-- only if A-MSDU
1253 * Other (2nd, 3rd, ..) msdu's decapped header:
1254 * [amsdu header] <-- only if A-MSDU
1258 rxd
= (void *)msdu
->data
- sizeof(*rxd
);
1259 decap
= MS(__le32_to_cpu(rxd
->msdu_start
.common
.info1
),
1260 RX_MSDU_START_INFO1_DECAP_FORMAT
);
1263 case RX_MSDU_DECAP_RAW
:
1264 ath10k_htt_rx_h_undecap_raw(ar
, msdu
, status
, enctype
,
1267 case RX_MSDU_DECAP_NATIVE_WIFI
:
1268 ath10k_htt_rx_h_undecap_nwifi(ar
, msdu
, status
, first_hdr
);
1270 case RX_MSDU_DECAP_ETHERNET2_DIX
:
1271 ath10k_htt_rx_h_undecap_eth(ar
, msdu
, status
, first_hdr
, enctype
);
1273 case RX_MSDU_DECAP_8023_SNAP_LLC
:
1274 ath10k_htt_rx_h_undecap_snap(ar
, msdu
, status
, first_hdr
);
1279 static int ath10k_htt_rx_get_csum_state(struct sk_buff
*skb
)
1281 struct htt_rx_desc
*rxd
;
1283 bool is_ip4
, is_ip6
;
1284 bool is_tcp
, is_udp
;
1285 bool ip_csum_ok
, tcpudp_csum_ok
;
1287 rxd
= (void *)skb
->data
- sizeof(*rxd
);
1288 flags
= __le32_to_cpu(rxd
->attention
.flags
);
1289 info
= __le32_to_cpu(rxd
->msdu_start
.common
.info1
);
1291 is_ip4
= !!(info
& RX_MSDU_START_INFO1_IPV4_PROTO
);
1292 is_ip6
= !!(info
& RX_MSDU_START_INFO1_IPV6_PROTO
);
1293 is_tcp
= !!(info
& RX_MSDU_START_INFO1_TCP_PROTO
);
1294 is_udp
= !!(info
& RX_MSDU_START_INFO1_UDP_PROTO
);
1295 ip_csum_ok
= !(flags
& RX_ATTENTION_FLAGS_IP_CHKSUM_FAIL
);
1296 tcpudp_csum_ok
= !(flags
& RX_ATTENTION_FLAGS_TCP_UDP_CHKSUM_FAIL
);
1298 if (!is_ip4
&& !is_ip6
)
1299 return CHECKSUM_NONE
;
1300 if (!is_tcp
&& !is_udp
)
1301 return CHECKSUM_NONE
;
1303 return CHECKSUM_NONE
;
1304 if (!tcpudp_csum_ok
)
1305 return CHECKSUM_NONE
;
1307 return CHECKSUM_UNNECESSARY
;
1310 static void ath10k_htt_rx_h_csum_offload(struct sk_buff
*msdu
)
1312 msdu
->ip_summed
= ath10k_htt_rx_get_csum_state(msdu
);
1315 static void ath10k_htt_rx_h_mpdu(struct ath10k
*ar
,
1316 struct sk_buff_head
*amsdu
,
1317 struct ieee80211_rx_status
*status
)
1319 struct sk_buff
*first
;
1320 struct sk_buff
*last
;
1321 struct sk_buff
*msdu
;
1322 struct htt_rx_desc
*rxd
;
1323 struct ieee80211_hdr
*hdr
;
1324 enum htt_rx_mpdu_encrypt_type enctype
;
1329 bool has_crypto_err
;
1331 bool has_peer_idx_invalid
;
1335 if (skb_queue_empty(amsdu
))
1338 first
= skb_peek(amsdu
);
1339 rxd
= (void *)first
->data
- sizeof(*rxd
);
1341 enctype
= MS(__le32_to_cpu(rxd
->mpdu_start
.info0
),
1342 RX_MPDU_START_INFO0_ENCRYPT_TYPE
);
1344 /* First MSDU's Rx descriptor in an A-MSDU contains full 802.11
1345 * decapped header. It'll be used for undecapping of each MSDU.
1347 hdr
= (void *)rxd
->rx_hdr_status
;
1348 hdr_len
= ieee80211_hdrlen(hdr
->frame_control
);
1349 memcpy(first_hdr
, hdr
, hdr_len
);
1351 /* Each A-MSDU subframe will use the original header as the base and be
1352 * reported as a separate MSDU so strip the A-MSDU bit from QoS Ctl.
1354 hdr
= (void *)first_hdr
;
1355 qos
= ieee80211_get_qos_ctl(hdr
);
1356 qos
[0] &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT
;
1358 /* Some attention flags are valid only in the last MSDU. */
1359 last
= skb_peek_tail(amsdu
);
1360 rxd
= (void *)last
->data
- sizeof(*rxd
);
1361 attention
= __le32_to_cpu(rxd
->attention
.flags
);
1363 has_fcs_err
= !!(attention
& RX_ATTENTION_FLAGS_FCS_ERR
);
1364 has_crypto_err
= !!(attention
& RX_ATTENTION_FLAGS_DECRYPT_ERR
);
1365 has_tkip_err
= !!(attention
& RX_ATTENTION_FLAGS_TKIP_MIC_ERR
);
1366 has_peer_idx_invalid
= !!(attention
& RX_ATTENTION_FLAGS_PEER_IDX_INVALID
);
1368 /* Note: If hardware captures an encrypted frame that it can't decrypt,
1369 * e.g. due to fcs error, missing peer or invalid key data it will
1370 * report the frame as raw.
1372 is_decrypted
= (enctype
!= HTT_RX_MPDU_ENCRYPT_NONE
&&
1375 !has_peer_idx_invalid
);
1377 /* Clear per-MPDU flags while leaving per-PPDU flags intact. */
1378 status
->flag
&= ~(RX_FLAG_FAILED_FCS_CRC
|
1379 RX_FLAG_MMIC_ERROR
|
1381 RX_FLAG_IV_STRIPPED
|
1382 RX_FLAG_MMIC_STRIPPED
);
1385 status
->flag
|= RX_FLAG_FAILED_FCS_CRC
;
1388 status
->flag
|= RX_FLAG_MMIC_ERROR
;
1391 status
->flag
|= RX_FLAG_DECRYPTED
|
1392 RX_FLAG_IV_STRIPPED
|
1393 RX_FLAG_MMIC_STRIPPED
;
1395 skb_queue_walk(amsdu
, msdu
) {
1396 ath10k_htt_rx_h_csum_offload(msdu
);
1397 ath10k_htt_rx_h_undecap(ar
, msdu
, status
, first_hdr
, enctype
,
1400 /* Undecapping involves copying the original 802.11 header back
1401 * to sk_buff. If frame is protected and hardware has decrypted
1402 * it then remove the protected bit.
1407 hdr
= (void *)msdu
->data
;
1408 hdr
->frame_control
&= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
1412 static void ath10k_htt_rx_h_deliver(struct ath10k
*ar
,
1413 struct sk_buff_head
*amsdu
,
1414 struct ieee80211_rx_status
*status
)
1416 struct sk_buff
*msdu
;
1418 while ((msdu
= __skb_dequeue(amsdu
))) {
1419 /* Setup per-MSDU flags */
1420 if (skb_queue_empty(amsdu
))
1421 status
->flag
&= ~RX_FLAG_AMSDU_MORE
;
1423 status
->flag
|= RX_FLAG_AMSDU_MORE
;
1425 ath10k_process_rx(ar
, status
, msdu
);
1429 static int ath10k_unchain_msdu(struct sk_buff_head
*amsdu
)
1431 struct sk_buff
*skb
, *first
;
1435 /* TODO: Might could optimize this by using
1436 * skb_try_coalesce or similar method to
1437 * decrease copying, or maybe get mac80211 to
1438 * provide a way to just receive a list of
1442 first
= __skb_dequeue(amsdu
);
1444 /* Allocate total length all at once. */
1445 skb_queue_walk(amsdu
, skb
)
1446 total_len
+= skb
->len
;
1448 space
= total_len
- skb_tailroom(first
);
1450 (pskb_expand_head(first
, 0, space
, GFP_ATOMIC
) < 0)) {
1451 /* TODO: bump some rx-oom error stat */
1452 /* put it back together so we can free the
1453 * whole list at once.
1455 __skb_queue_head(amsdu
, first
);
1459 /* Walk list again, copying contents into
1462 while ((skb
= __skb_dequeue(amsdu
))) {
1463 skb_copy_from_linear_data(skb
, skb_put(first
, skb
->len
),
1465 dev_kfree_skb_any(skb
);
1468 __skb_queue_head(amsdu
, first
);
1472 static void ath10k_htt_rx_h_unchain(struct ath10k
*ar
,
1473 struct sk_buff_head
*amsdu
,
1476 struct sk_buff
*first
;
1477 struct htt_rx_desc
*rxd
;
1478 enum rx_msdu_decap_format decap
;
1480 first
= skb_peek(amsdu
);
1481 rxd
= (void *)first
->data
- sizeof(*rxd
);
1482 decap
= MS(__le32_to_cpu(rxd
->msdu_start
.common
.info1
),
1483 RX_MSDU_START_INFO1_DECAP_FORMAT
);
1488 /* FIXME: Current unchaining logic can only handle simple case of raw
1489 * msdu chaining. If decapping is other than raw the chaining may be
1490 * more complex and this isn't handled by the current code. Don't even
1491 * try re-constructing such frames - it'll be pretty much garbage.
1493 if (decap
!= RX_MSDU_DECAP_RAW
||
1494 skb_queue_len(amsdu
) != 1 + rxd
->frag_info
.ring2_more_count
) {
1495 __skb_queue_purge(amsdu
);
1499 ath10k_unchain_msdu(amsdu
);
1502 static bool ath10k_htt_rx_amsdu_allowed(struct ath10k
*ar
,
1503 struct sk_buff_head
*amsdu
,
1504 struct ieee80211_rx_status
*rx_status
)
1506 struct sk_buff
*msdu
;
1507 struct htt_rx_desc
*rxd
;
1511 msdu
= skb_peek(amsdu
);
1512 rxd
= (void *)msdu
->data
- sizeof(*rxd
);
1514 /* FIXME: It might be a good idea to do some fuzzy-testing to drop
1515 * invalid/dangerous frames.
1518 if (!rx_status
->freq
) {
1519 ath10k_warn(ar
, "no channel configured; ignoring frame(s)!\n");
1523 is_mgmt
= !!(rxd
->attention
.flags
&
1524 __cpu_to_le32(RX_ATTENTION_FLAGS_MGMT_TYPE
));
1525 has_fcs_err
= !!(rxd
->attention
.flags
&
1526 __cpu_to_le32(RX_ATTENTION_FLAGS_FCS_ERR
));
1528 /* Management frames are handled via WMI events. The pros of such
1529 * approach is that channel is explicitly provided in WMI events
1530 * whereas HTT doesn't provide channel information for Rxed frames.
1532 * However some firmware revisions don't report corrupted frames via
1533 * WMI so don't drop them.
1535 if (is_mgmt
&& !has_fcs_err
) {
1536 ath10k_dbg(ar
, ATH10K_DBG_HTT
, "htt rx mgmt ctrl\n");
1540 if (test_bit(ATH10K_CAC_RUNNING
, &ar
->dev_flags
)) {
1541 ath10k_dbg(ar
, ATH10K_DBG_HTT
, "htt rx cac running\n");
1548 static void ath10k_htt_rx_h_filter(struct ath10k
*ar
,
1549 struct sk_buff_head
*amsdu
,
1550 struct ieee80211_rx_status
*rx_status
)
1552 if (skb_queue_empty(amsdu
))
1555 if (ath10k_htt_rx_amsdu_allowed(ar
, amsdu
, rx_status
))
1558 __skb_queue_purge(amsdu
);
1561 static void ath10k_htt_rx_handler(struct ath10k_htt
*htt
,
1562 struct htt_rx_indication
*rx
)
1564 struct ath10k
*ar
= htt
->ar
;
1565 struct ieee80211_rx_status
*rx_status
= &htt
->rx_status
;
1566 struct htt_rx_indication_mpdu_range
*mpdu_ranges
;
1567 struct sk_buff_head amsdu
;
1568 int num_mpdu_ranges
;
1571 int i
, ret
, mpdu_count
= 0;
1573 lockdep_assert_held(&htt
->rx_ring
.lock
);
1575 if (htt
->rx_confused
)
1578 fw_desc_len
= __le16_to_cpu(rx
->prefix
.fw_rx_desc_bytes
);
1579 fw_desc
= (u8
*)&rx
->fw_desc
;
1581 num_mpdu_ranges
= MS(__le32_to_cpu(rx
->hdr
.info1
),
1582 HTT_RX_INDICATION_INFO1_NUM_MPDU_RANGES
);
1583 mpdu_ranges
= htt_rx_ind_get_mpdu_ranges(rx
);
1585 ath10k_dbg_dump(ar
, ATH10K_DBG_HTT_DUMP
, NULL
, "htt rx ind: ",
1587 (sizeof(struct htt_rx_indication_mpdu_range
) *
1590 for (i
= 0; i
< num_mpdu_ranges
; i
++)
1591 mpdu_count
+= mpdu_ranges
[i
].mpdu_count
;
1593 while (mpdu_count
--) {
1594 __skb_queue_head_init(&amsdu
);
1595 ret
= ath10k_htt_rx_amsdu_pop(htt
, &fw_desc
,
1596 &fw_desc_len
, &amsdu
);
1598 ath10k_warn(ar
, "rx ring became corrupted: %d\n", ret
);
1599 __skb_queue_purge(&amsdu
);
1600 /* FIXME: It's probably a good idea to reboot the
1601 * device instead of leaving it inoperable.
1603 htt
->rx_confused
= true;
1607 ath10k_htt_rx_h_ppdu(ar
, &amsdu
, rx_status
, 0xffff);
1608 ath10k_htt_rx_h_unchain(ar
, &amsdu
, ret
> 0);
1609 ath10k_htt_rx_h_filter(ar
, &amsdu
, rx_status
);
1610 ath10k_htt_rx_h_mpdu(ar
, &amsdu
, rx_status
);
1611 ath10k_htt_rx_h_deliver(ar
, &amsdu
, rx_status
);
1614 tasklet_schedule(&htt
->rx_replenish_task
);
1617 static void ath10k_htt_rx_frag_handler(struct ath10k_htt
*htt
,
1618 struct htt_rx_fragment_indication
*frag
)
1620 struct ath10k
*ar
= htt
->ar
;
1621 struct ieee80211_rx_status
*rx_status
= &htt
->rx_status
;
1622 struct sk_buff_head amsdu
;
1627 fw_desc_len
= __le16_to_cpu(frag
->fw_rx_desc_bytes
);
1628 fw_desc
= (u8
*)frag
->fw_msdu_rx_desc
;
1630 __skb_queue_head_init(&amsdu
);
1632 spin_lock_bh(&htt
->rx_ring
.lock
);
1633 ret
= ath10k_htt_rx_amsdu_pop(htt
, &fw_desc
, &fw_desc_len
,
1635 spin_unlock_bh(&htt
->rx_ring
.lock
);
1637 tasklet_schedule(&htt
->rx_replenish_task
);
1639 ath10k_dbg(ar
, ATH10K_DBG_HTT_DUMP
, "htt rx frag ahead\n");
1642 ath10k_warn(ar
, "failed to pop amsdu from httr rx ring for fragmented rx %d\n",
1644 __skb_queue_purge(&amsdu
);
1648 if (skb_queue_len(&amsdu
) != 1) {
1649 ath10k_warn(ar
, "failed to pop frag amsdu: too many msdus\n");
1650 __skb_queue_purge(&amsdu
);
1654 ath10k_htt_rx_h_ppdu(ar
, &amsdu
, rx_status
, 0xffff);
1655 ath10k_htt_rx_h_filter(ar
, &amsdu
, rx_status
);
1656 ath10k_htt_rx_h_mpdu(ar
, &amsdu
, rx_status
);
1657 ath10k_htt_rx_h_deliver(ar
, &amsdu
, rx_status
);
1659 if (fw_desc_len
> 0) {
1660 ath10k_dbg(ar
, ATH10K_DBG_HTT
,
1661 "expecting more fragmented rx in one indication %d\n",
1666 static void ath10k_htt_rx_frm_tx_compl(struct ath10k
*ar
,
1667 struct sk_buff
*skb
)
1669 struct ath10k_htt
*htt
= &ar
->htt
;
1670 struct htt_resp
*resp
= (struct htt_resp
*)skb
->data
;
1671 struct htt_tx_done tx_done
= {};
1672 int status
= MS(resp
->data_tx_completion
.flags
, HTT_DATA_TX_STATUS
);
1677 case HTT_DATA_TX_STATUS_NO_ACK
:
1678 tx_done
.no_ack
= true;
1680 case HTT_DATA_TX_STATUS_OK
:
1681 tx_done
.success
= true;
1683 case HTT_DATA_TX_STATUS_DISCARD
:
1684 case HTT_DATA_TX_STATUS_POSTPONE
:
1685 case HTT_DATA_TX_STATUS_DOWNLOAD_FAIL
:
1686 tx_done
.discard
= true;
1689 ath10k_warn(ar
, "unhandled tx completion status %d\n", status
);
1690 tx_done
.discard
= true;
1694 ath10k_dbg(ar
, ATH10K_DBG_HTT
, "htt tx completion num_msdus %d\n",
1695 resp
->data_tx_completion
.num_msdus
);
1697 for (i
= 0; i
< resp
->data_tx_completion
.num_msdus
; i
++) {
1698 msdu_id
= resp
->data_tx_completion
.msdus
[i
];
1699 tx_done
.msdu_id
= __le16_to_cpu(msdu_id
);
1700 ath10k_txrx_tx_unref(htt
, &tx_done
);
1704 static void ath10k_htt_rx_addba(struct ath10k
*ar
, struct htt_resp
*resp
)
1706 struct htt_rx_addba
*ev
= &resp
->rx_addba
;
1707 struct ath10k_peer
*peer
;
1708 struct ath10k_vif
*arvif
;
1709 u16 info0
, tid
, peer_id
;
1711 info0
= __le16_to_cpu(ev
->info0
);
1712 tid
= MS(info0
, HTT_RX_BA_INFO0_TID
);
1713 peer_id
= MS(info0
, HTT_RX_BA_INFO0_PEER_ID
);
1715 ath10k_dbg(ar
, ATH10K_DBG_HTT
,
1716 "htt rx addba tid %hu peer_id %hu size %hhu\n",
1717 tid
, peer_id
, ev
->window_size
);
1719 spin_lock_bh(&ar
->data_lock
);
1720 peer
= ath10k_peer_find_by_id(ar
, peer_id
);
1722 ath10k_warn(ar
, "received addba event for invalid peer_id: %hu\n",
1724 spin_unlock_bh(&ar
->data_lock
);
1728 arvif
= ath10k_get_arvif(ar
, peer
->vdev_id
);
1730 ath10k_warn(ar
, "received addba event for invalid vdev_id: %u\n",
1732 spin_unlock_bh(&ar
->data_lock
);
1736 ath10k_dbg(ar
, ATH10K_DBG_HTT
,
1737 "htt rx start rx ba session sta %pM tid %hu size %hhu\n",
1738 peer
->addr
, tid
, ev
->window_size
);
1740 ieee80211_start_rx_ba_session_offl(arvif
->vif
, peer
->addr
, tid
);
1741 spin_unlock_bh(&ar
->data_lock
);
1744 static void ath10k_htt_rx_delba(struct ath10k
*ar
, struct htt_resp
*resp
)
1746 struct htt_rx_delba
*ev
= &resp
->rx_delba
;
1747 struct ath10k_peer
*peer
;
1748 struct ath10k_vif
*arvif
;
1749 u16 info0
, tid
, peer_id
;
1751 info0
= __le16_to_cpu(ev
->info0
);
1752 tid
= MS(info0
, HTT_RX_BA_INFO0_TID
);
1753 peer_id
= MS(info0
, HTT_RX_BA_INFO0_PEER_ID
);
1755 ath10k_dbg(ar
, ATH10K_DBG_HTT
,
1756 "htt rx delba tid %hu peer_id %hu\n",
1759 spin_lock_bh(&ar
->data_lock
);
1760 peer
= ath10k_peer_find_by_id(ar
, peer_id
);
1762 ath10k_warn(ar
, "received addba event for invalid peer_id: %hu\n",
1764 spin_unlock_bh(&ar
->data_lock
);
1768 arvif
= ath10k_get_arvif(ar
, peer
->vdev_id
);
1770 ath10k_warn(ar
, "received addba event for invalid vdev_id: %u\n",
1772 spin_unlock_bh(&ar
->data_lock
);
1776 ath10k_dbg(ar
, ATH10K_DBG_HTT
,
1777 "htt rx stop rx ba session sta %pM tid %hu\n",
1780 ieee80211_stop_rx_ba_session_offl(arvif
->vif
, peer
->addr
, tid
);
1781 spin_unlock_bh(&ar
->data_lock
);
1784 static int ath10k_htt_rx_extract_amsdu(struct sk_buff_head
*list
,
1785 struct sk_buff_head
*amsdu
)
1787 struct sk_buff
*msdu
;
1788 struct htt_rx_desc
*rxd
;
1790 if (skb_queue_empty(list
))
1793 if (WARN_ON(!skb_queue_empty(amsdu
)))
1796 while ((msdu
= __skb_dequeue(list
))) {
1797 __skb_queue_tail(amsdu
, msdu
);
1799 rxd
= (void *)msdu
->data
- sizeof(*rxd
);
1800 if (rxd
->msdu_end
.common
.info0
&
1801 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU
))
1805 msdu
= skb_peek_tail(amsdu
);
1806 rxd
= (void *)msdu
->data
- sizeof(*rxd
);
1807 if (!(rxd
->msdu_end
.common
.info0
&
1808 __cpu_to_le32(RX_MSDU_END_INFO0_LAST_MSDU
))) {
1809 skb_queue_splice_init(amsdu
, list
);
1816 static void ath10k_htt_rx_h_rx_offload_prot(struct ieee80211_rx_status
*status
,
1817 struct sk_buff
*skb
)
1819 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
1821 if (!ieee80211_has_protected(hdr
->frame_control
))
1824 /* Offloaded frames are already decrypted but firmware insists they are
1825 * protected in the 802.11 header. Strip the flag. Otherwise mac80211
1826 * will drop the frame.
1829 hdr
->frame_control
&= ~__cpu_to_le16(IEEE80211_FCTL_PROTECTED
);
1830 status
->flag
|= RX_FLAG_DECRYPTED
|
1831 RX_FLAG_IV_STRIPPED
|
1832 RX_FLAG_MMIC_STRIPPED
;
1835 static void ath10k_htt_rx_h_rx_offload(struct ath10k
*ar
,
1836 struct sk_buff_head
*list
)
1838 struct ath10k_htt
*htt
= &ar
->htt
;
1839 struct ieee80211_rx_status
*status
= &htt
->rx_status
;
1840 struct htt_rx_offload_msdu
*rx
;
1841 struct sk_buff
*msdu
;
1844 while ((msdu
= __skb_dequeue(list
))) {
1845 /* Offloaded frames don't have Rx descriptor. Instead they have
1846 * a short meta information header.
1849 rx
= (void *)msdu
->data
;
1851 skb_put(msdu
, sizeof(*rx
));
1852 skb_pull(msdu
, sizeof(*rx
));
1854 if (skb_tailroom(msdu
) < __le16_to_cpu(rx
->msdu_len
)) {
1855 ath10k_warn(ar
, "dropping frame: offloaded rx msdu is too long!\n");
1856 dev_kfree_skb_any(msdu
);
1860 skb_put(msdu
, __le16_to_cpu(rx
->msdu_len
));
1862 /* Offloaded rx header length isn't multiple of 2 nor 4 so the
1863 * actual payload is unaligned. Align the frame. Otherwise
1864 * mac80211 complains. This shouldn't reduce performance much
1865 * because these offloaded frames are rare.
1867 offset
= 4 - ((unsigned long)msdu
->data
& 3);
1868 skb_put(msdu
, offset
);
1869 memmove(msdu
->data
+ offset
, msdu
->data
, msdu
->len
);
1870 skb_pull(msdu
, offset
);
1872 /* FIXME: The frame is NWifi. Re-construct QoS Control
1873 * if possible later.
1876 memset(status
, 0, sizeof(*status
));
1877 status
->flag
|= RX_FLAG_NO_SIGNAL_VAL
;
1879 ath10k_htt_rx_h_rx_offload_prot(status
, msdu
);
1880 ath10k_htt_rx_h_channel(ar
, status
, NULL
, rx
->vdev_id
);
1881 ath10k_process_rx(ar
, status
, msdu
);
1885 static void ath10k_htt_rx_in_ord_ind(struct ath10k
*ar
, struct sk_buff
*skb
)
1887 struct ath10k_htt
*htt
= &ar
->htt
;
1888 struct htt_resp
*resp
= (void *)skb
->data
;
1889 struct ieee80211_rx_status
*status
= &htt
->rx_status
;
1890 struct sk_buff_head list
;
1891 struct sk_buff_head amsdu
;
1900 lockdep_assert_held(&htt
->rx_ring
.lock
);
1902 if (htt
->rx_confused
)
1905 skb_pull(skb
, sizeof(resp
->hdr
));
1906 skb_pull(skb
, sizeof(resp
->rx_in_ord_ind
));
1908 peer_id
= __le16_to_cpu(resp
->rx_in_ord_ind
.peer_id
);
1909 msdu_count
= __le16_to_cpu(resp
->rx_in_ord_ind
.msdu_count
);
1910 vdev_id
= resp
->rx_in_ord_ind
.vdev_id
;
1911 tid
= SM(resp
->rx_in_ord_ind
.info
, HTT_RX_IN_ORD_IND_INFO_TID
);
1912 offload
= !!(resp
->rx_in_ord_ind
.info
&
1913 HTT_RX_IN_ORD_IND_INFO_OFFLOAD_MASK
);
1914 frag
= !!(resp
->rx_in_ord_ind
.info
& HTT_RX_IN_ORD_IND_INFO_FRAG_MASK
);
1916 ath10k_dbg(ar
, ATH10K_DBG_HTT
,
1917 "htt rx in ord vdev %i peer %i tid %i offload %i frag %i msdu count %i\n",
1918 vdev_id
, peer_id
, tid
, offload
, frag
, msdu_count
);
1920 if (skb
->len
< msdu_count
* sizeof(*resp
->rx_in_ord_ind
.msdu_descs
)) {
1921 ath10k_warn(ar
, "dropping invalid in order rx indication\n");
1925 /* The event can deliver more than 1 A-MSDU. Each A-MSDU is later
1926 * extracted and processed.
1928 __skb_queue_head_init(&list
);
1929 ret
= ath10k_htt_rx_pop_paddr_list(htt
, &resp
->rx_in_ord_ind
, &list
);
1931 ath10k_warn(ar
, "failed to pop paddr list: %d\n", ret
);
1932 htt
->rx_confused
= true;
1936 /* Offloaded frames are very different and need to be handled
1940 ath10k_htt_rx_h_rx_offload(ar
, &list
);
1942 while (!skb_queue_empty(&list
)) {
1943 __skb_queue_head_init(&amsdu
);
1944 ret
= ath10k_htt_rx_extract_amsdu(&list
, &amsdu
);
1947 /* Note: The in-order indication may report interleaved
1948 * frames from different PPDUs meaning reported rx rate
1949 * to mac80211 isn't accurate/reliable. It's still
1950 * better to report something than nothing though. This
1951 * should still give an idea about rx rate to the user.
1953 ath10k_htt_rx_h_ppdu(ar
, &amsdu
, status
, vdev_id
);
1954 ath10k_htt_rx_h_filter(ar
, &amsdu
, status
);
1955 ath10k_htt_rx_h_mpdu(ar
, &amsdu
, status
);
1956 ath10k_htt_rx_h_deliver(ar
, &amsdu
, status
);
1961 /* Should not happen. */
1962 ath10k_warn(ar
, "failed to extract amsdu: %d\n", ret
);
1963 htt
->rx_confused
= true;
1964 __skb_queue_purge(&list
);
1969 tasklet_schedule(&htt
->rx_replenish_task
);
1972 void ath10k_htt_t2h_msg_handler(struct ath10k
*ar
, struct sk_buff
*skb
)
1974 struct ath10k_htt
*htt
= &ar
->htt
;
1975 struct htt_resp
*resp
= (struct htt_resp
*)skb
->data
;
1976 enum htt_t2h_msg_type type
;
1978 /* confirm alignment */
1979 if (!IS_ALIGNED((unsigned long)skb
->data
, 4))
1980 ath10k_warn(ar
, "unaligned htt message, expect trouble\n");
1982 ath10k_dbg(ar
, ATH10K_DBG_HTT
, "htt rx, msg_type: 0x%0X\n",
1983 resp
->hdr
.msg_type
);
1985 if (resp
->hdr
.msg_type
>= ar
->htt
.t2h_msg_types_max
) {
1986 ath10k_dbg(ar
, ATH10K_DBG_HTT
, "htt rx, unsupported msg_type: 0x%0X\n max: 0x%0X",
1987 resp
->hdr
.msg_type
, ar
->htt
.t2h_msg_types_max
);
1988 dev_kfree_skb_any(skb
);
1991 type
= ar
->htt
.t2h_msg_types
[resp
->hdr
.msg_type
];
1994 case HTT_T2H_MSG_TYPE_VERSION_CONF
: {
1995 htt
->target_version_major
= resp
->ver_resp
.major
;
1996 htt
->target_version_minor
= resp
->ver_resp
.minor
;
1997 complete(&htt
->target_version_received
);
2000 case HTT_T2H_MSG_TYPE_RX_IND
:
2001 spin_lock_bh(&htt
->rx_ring
.lock
);
2002 __skb_queue_tail(&htt
->rx_compl_q
, skb
);
2003 spin_unlock_bh(&htt
->rx_ring
.lock
);
2004 tasklet_schedule(&htt
->txrx_compl_task
);
2006 case HTT_T2H_MSG_TYPE_PEER_MAP
: {
2007 struct htt_peer_map_event ev
= {
2008 .vdev_id
= resp
->peer_map
.vdev_id
,
2009 .peer_id
= __le16_to_cpu(resp
->peer_map
.peer_id
),
2011 memcpy(ev
.addr
, resp
->peer_map
.addr
, sizeof(ev
.addr
));
2012 ath10k_peer_map_event(htt
, &ev
);
2015 case HTT_T2H_MSG_TYPE_PEER_UNMAP
: {
2016 struct htt_peer_unmap_event ev
= {
2017 .peer_id
= __le16_to_cpu(resp
->peer_unmap
.peer_id
),
2019 ath10k_peer_unmap_event(htt
, &ev
);
2022 case HTT_T2H_MSG_TYPE_MGMT_TX_COMPLETION
: {
2023 struct htt_tx_done tx_done
= {};
2024 int status
= __le32_to_cpu(resp
->mgmt_tx_completion
.status
);
2027 __le32_to_cpu(resp
->mgmt_tx_completion
.desc_id
);
2030 case HTT_MGMT_TX_STATUS_OK
:
2031 tx_done
.success
= true;
2033 case HTT_MGMT_TX_STATUS_RETRY
:
2034 tx_done
.no_ack
= true;
2036 case HTT_MGMT_TX_STATUS_DROP
:
2037 tx_done
.discard
= true;
2041 ath10k_txrx_tx_unref(htt
, &tx_done
);
2044 case HTT_T2H_MSG_TYPE_TX_COMPL_IND
:
2045 skb_queue_tail(&htt
->tx_compl_q
, skb
);
2046 tasklet_schedule(&htt
->txrx_compl_task
);
2048 case HTT_T2H_MSG_TYPE_SEC_IND
: {
2049 struct ath10k
*ar
= htt
->ar
;
2050 struct htt_security_indication
*ev
= &resp
->security_indication
;
2052 ath10k_dbg(ar
, ATH10K_DBG_HTT
,
2053 "sec ind peer_id %d unicast %d type %d\n",
2054 __le16_to_cpu(ev
->peer_id
),
2055 !!(ev
->flags
& HTT_SECURITY_IS_UNICAST
),
2056 MS(ev
->flags
, HTT_SECURITY_TYPE
));
2057 complete(&ar
->install_key_done
);
2060 case HTT_T2H_MSG_TYPE_RX_FRAG_IND
: {
2061 ath10k_dbg_dump(ar
, ATH10K_DBG_HTT_DUMP
, NULL
, "htt event: ",
2062 skb
->data
, skb
->len
);
2063 ath10k_htt_rx_frag_handler(htt
, &resp
->rx_frag_ind
);
2066 case HTT_T2H_MSG_TYPE_TEST
:
2068 case HTT_T2H_MSG_TYPE_STATS_CONF
:
2069 trace_ath10k_htt_stats(ar
, skb
->data
, skb
->len
);
2071 case HTT_T2H_MSG_TYPE_TX_INSPECT_IND
:
2072 /* Firmware can return tx frames if it's unable to fully
2073 * process them and suspects host may be able to fix it. ath10k
2074 * sends all tx frames as already inspected so this shouldn't
2075 * happen unless fw has a bug.
2077 ath10k_warn(ar
, "received an unexpected htt tx inspect event\n");
2079 case HTT_T2H_MSG_TYPE_RX_ADDBA
:
2080 ath10k_htt_rx_addba(ar
, resp
);
2082 case HTT_T2H_MSG_TYPE_RX_DELBA
:
2083 ath10k_htt_rx_delba(ar
, resp
);
2085 case HTT_T2H_MSG_TYPE_PKTLOG
: {
2086 struct ath10k_pktlog_hdr
*hdr
=
2087 (struct ath10k_pktlog_hdr
*)resp
->pktlog_msg
.payload
;
2089 trace_ath10k_htt_pktlog(ar
, resp
->pktlog_msg
.payload
,
2091 __le16_to_cpu(hdr
->size
));
2094 case HTT_T2H_MSG_TYPE_RX_FLUSH
: {
2095 /* Ignore this event because mac80211 takes care of Rx
2096 * aggregation reordering.
2100 case HTT_T2H_MSG_TYPE_RX_IN_ORD_PADDR_IND
: {
2101 spin_lock_bh(&htt
->rx_ring
.lock
);
2102 __skb_queue_tail(&htt
->rx_in_ord_compl_q
, skb
);
2103 spin_unlock_bh(&htt
->rx_ring
.lock
);
2104 tasklet_schedule(&htt
->txrx_compl_task
);
2107 case HTT_T2H_MSG_TYPE_TX_CREDIT_UPDATE_IND
:
2109 case HTT_T2H_MSG_TYPE_CHAN_CHANGE
:
2111 case HTT_T2H_MSG_TYPE_AGGR_CONF
:
2113 case HTT_T2H_MSG_TYPE_EN_STATS
:
2114 case HTT_T2H_MSG_TYPE_TX_FETCH_IND
:
2115 case HTT_T2H_MSG_TYPE_TX_FETCH_CONF
:
2116 case HTT_T2H_MSG_TYPE_TX_LOW_LATENCY_IND
:
2118 ath10k_warn(ar
, "htt event (%d) not handled\n",
2119 resp
->hdr
.msg_type
);
2120 ath10k_dbg_dump(ar
, ATH10K_DBG_HTT_DUMP
, NULL
, "htt event: ",
2121 skb
->data
, skb
->len
);
2125 /* Free the indication buffer */
2126 dev_kfree_skb_any(skb
);
2128 EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler
);
2130 static void ath10k_htt_txrx_compl_task(unsigned long ptr
)
2132 struct ath10k_htt
*htt
= (struct ath10k_htt
*)ptr
;
2133 struct ath10k
*ar
= htt
->ar
;
2134 struct htt_resp
*resp
;
2135 struct sk_buff
*skb
;
2137 while ((skb
= skb_dequeue(&htt
->tx_compl_q
))) {
2138 ath10k_htt_rx_frm_tx_compl(htt
->ar
, skb
);
2139 dev_kfree_skb_any(skb
);
2142 spin_lock_bh(&htt
->rx_ring
.lock
);
2143 while ((skb
= __skb_dequeue(&htt
->rx_compl_q
))) {
2144 resp
= (struct htt_resp
*)skb
->data
;
2145 ath10k_htt_rx_handler(htt
, &resp
->rx_ind
);
2146 dev_kfree_skb_any(skb
);
2149 while ((skb
= __skb_dequeue(&htt
->rx_in_ord_compl_q
))) {
2150 ath10k_htt_rx_in_ord_ind(ar
, skb
);
2151 dev_kfree_skb_any(skb
);
2153 spin_unlock_bh(&htt
->rx_ring
.lock
);