2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 #include <linux/types.h>
17 #include <linux/module.h>
18 #include <linux/if_ether.h>
19 #include <linux/spinlock.h>
20 #include <linux/skbuff.h>
21 #include <linux/netdevice.h>
22 #include <linux/etherdevice.h>
23 #include <linux/err.h>
24 #include <uapi/linux/nl80211.h>
25 #include <net/cfg80211.h>
27 #include <brcmu_utils.h>
28 #include <brcmu_wifi.h>
30 #include "dhd_proto.h"
34 #include "fwil_types.h"
38 #include "wl_cfg80211.h"
41 * DOC: Firmware Signalling
43 * Firmware can send signals to host and vice versa, which are passed in the
44 * data packets using TLV based header. This signalling layer is on top of the
45 * BDC bus protocol layer.
49 * single definition for firmware-driver flow control tlv's.
51 * each tlv is specified by BRCMF_FWS_TLV_DEF(name, ID, length).
52 * A length value 0 indicates variable length tlv.
54 #define BRCMF_FWS_TLV_DEFLIST \
55 BRCMF_FWS_TLV_DEF(MAC_OPEN, 1, 1) \
56 BRCMF_FWS_TLV_DEF(MAC_CLOSE, 2, 1) \
57 BRCMF_FWS_TLV_DEF(MAC_REQUEST_CREDIT, 3, 2) \
58 BRCMF_FWS_TLV_DEF(TXSTATUS, 4, 4) \
59 BRCMF_FWS_TLV_DEF(PKTTAG, 5, 4) \
60 BRCMF_FWS_TLV_DEF(MACDESC_ADD, 6, 8) \
61 BRCMF_FWS_TLV_DEF(MACDESC_DEL, 7, 8) \
62 BRCMF_FWS_TLV_DEF(RSSI, 8, 1) \
63 BRCMF_FWS_TLV_DEF(INTERFACE_OPEN, 9, 1) \
64 BRCMF_FWS_TLV_DEF(INTERFACE_CLOSE, 10, 1) \
65 BRCMF_FWS_TLV_DEF(FIFO_CREDITBACK, 11, 6) \
66 BRCMF_FWS_TLV_DEF(PENDING_TRAFFIC_BMP, 12, 2) \
67 BRCMF_FWS_TLV_DEF(MAC_REQUEST_PACKET, 13, 3) \
68 BRCMF_FWS_TLV_DEF(HOST_REORDER_RXPKTS, 14, 10) \
69 BRCMF_FWS_TLV_DEF(TRANS_ID, 18, 6) \
70 BRCMF_FWS_TLV_DEF(COMP_TXSTATUS, 19, 1) \
71 BRCMF_FWS_TLV_DEF(FILLER, 255, 0)
74 * enum brcmf_fws_tlv_type - definition of tlv identifiers.
76 #define BRCMF_FWS_TLV_DEF(name, id, len) \
77 BRCMF_FWS_TYPE_ ## name = id,
78 enum brcmf_fws_tlv_type
{
80 BRCMF_FWS_TYPE_INVALID
82 #undef BRCMF_FWS_TLV_DEF
85 * enum brcmf_fws_tlv_len - definition of tlv lengths.
87 #define BRCMF_FWS_TLV_DEF(name, id, len) \
88 BRCMF_FWS_TYPE_ ## name ## _LEN = (len),
89 enum brcmf_fws_tlv_len
{
92 #undef BRCMF_FWS_TLV_DEF
96 * brcmf_fws_tlv_names - array of tlv names.
98 #define BRCMF_FWS_TLV_DEF(name, id, len) \
101 enum brcmf_fws_tlv_type id
;
103 } brcmf_fws_tlv_names
[] = {
104 BRCMF_FWS_TLV_DEFLIST
106 #undef BRCMF_FWS_TLV_DEF
108 static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id
)
112 for (i
= 0; i
< ARRAY_SIZE(brcmf_fws_tlv_names
); i
++)
113 if (brcmf_fws_tlv_names
[i
].id
== id
)
114 return brcmf_fws_tlv_names
[i
].name
;
119 static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id
)
126 * flags used to enable tlv signalling from firmware.
128 #define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001
129 #define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002
130 #define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004
131 #define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008
132 #define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010
133 #define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020
134 #define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040
136 #define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32
137 #define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff
139 #define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0
140 #define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1
141 #define BRCMF_FWS_FLOWCONTROL_HIWATER 128
142 #define BRCMF_FWS_FLOWCONTROL_LOWATER 64
144 #define BRCMF_FWS_PSQ_PREC_COUNT ((NL80211_NUM_ACS + 1) * 2)
145 #define BRCMF_FWS_PSQ_LEN 256
147 #define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01
148 #define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02
150 #define BRCMF_FWS_RET_OK_NOSCHEDULE 0
151 #define BRCMF_FWS_RET_OK_SCHEDULE 1
154 * enum brcmf_fws_skb_state - indicates processing state of skb.
156 * @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver.
157 * @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue.
158 * @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware.
160 enum brcmf_fws_skb_state
{
161 BRCMF_FWS_SKBSTATE_NEW
,
162 BRCMF_FWS_SKBSTATE_DELAYED
,
163 BRCMF_FWS_SKBSTATE_SUPPRESSED
167 * struct brcmf_skbuff_cb - control buffer associated with skbuff.
169 * @if_flags: holds interface index and packet related flags.
170 * @htod: host to device packet identifier (used in PKTTAG tlv).
171 * @state: transmit state of the packet.
172 * @mac: descriptor related to destination for this packet.
174 * This information is stored in control buffer struct sk_buff::cb, which
175 * provides 48 bytes of storage so this structure should not exceed that.
177 struct brcmf_skbuff_cb
{
180 enum brcmf_fws_skb_state state
;
181 struct brcmf_fws_mac_descriptor
*mac
;
185 * macro casting skbuff control buffer to struct brcmf_skbuff_cb.
187 #define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb))
190 * sk_buff control if flags
192 * b[11] - packet sent upon firmware request.
193 * b[10] - packet only contains signalling data.
194 * b[9] - packet is a tx packet.
195 * b[8] - packet uses FIFO credit (non-pspoll).
196 * b[7] - interface in AP mode.
197 * b[6:4] - AC FIFO number.
198 * b[3:0] - interface index.
200 #define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800
201 #define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11
202 #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400
203 #define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10
204 #define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200
205 #define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9
206 #define BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK 0x0100
207 #define BRCMF_SKB_IF_FLAGS_CREDITCHECK_SHIFT 8
208 #define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080
209 #define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7
210 #define BRCMF_SKB_IF_FLAGS_FIFO_MASK 0x0070
211 #define BRCMF_SKB_IF_FLAGS_FIFO_SHIFT 4
212 #define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f
213 #define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0
215 #define brcmf_skb_if_flags_set_field(skb, field, value) \
216 brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \
217 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
218 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value))
219 #define brcmf_skb_if_flags_get_field(skb, field) \
220 brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \
221 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
222 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT)
225 * sk_buff control packet identifier
227 * 32-bit packet identifier used in PKTTAG tlv from host to dongle.
229 * - Generated at the host (e.g. dhd)
230 * - Seen as a generic sequence number by firmware except for the flags field.
232 * Generation : b[31] => generation number for this packet [host->fw]
233 * OR, current generation number [fw->host]
234 * Flags : b[30:27] => command, status flags
235 * FIFO-AC : b[26:24] => AC-FIFO id
236 * h-slot : b[23:8] => hanger-slot
237 * freerun : b[7:0] => A free running counter
239 #define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000
240 #define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31
241 #define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000
242 #define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27
243 #define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000
244 #define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24
245 #define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00
246 #define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8
247 #define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff
248 #define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0
250 #define brcmf_skb_htod_tag_set_field(skb, field, value) \
251 brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \
252 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
253 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value))
254 #define brcmf_skb_htod_tag_get_field(skb, field) \
255 brcmu_maskget32(brcmf_skbcb(skb)->htod, \
256 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
257 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)
259 #define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000
260 #define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31
261 #define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000
262 #define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27
263 #define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000
264 #define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24
265 #define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00
266 #define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8
267 #define BRCMF_FWS_TXSTAT_PKTID_MASK 0x00FFFFFF
268 #define BRCMF_FWS_TXSTAT_PKTID_SHIFT 0
270 #define brcmf_txstatus_get_field(txs, field) \
271 brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \
272 BRCMF_FWS_TXSTAT_ ## field ## _SHIFT)
275 * enum brcmf_fws_fifo - fifo indices used by dongle firmware.
277 * @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic.
278 * @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic.
279 * @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic.
280 * @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic.
281 * @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only).
282 * @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only).
283 * @BRCMF_FWS_FIFO_COUNT: number of fifos.
285 enum brcmf_fws_fifo
{
286 BRCMF_FWS_FIFO_AC_BK
,
287 BRCMF_FWS_FIFO_AC_BE
,
288 BRCMF_FWS_FIFO_AC_VI
,
289 BRCMF_FWS_FIFO_AC_VO
,
296 * enum brcmf_fws_txstatus - txstatus flag values.
298 * @BRCMF_FWS_TXSTATUS_DISCARD:
299 * host is free to discard the packet.
300 * @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS:
301 * 802.11 core suppressed the packet.
302 * @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS:
303 * firmware suppress the packet as device is already in PS mode.
304 * @BRCMF_FWS_TXSTATUS_FW_TOSSED:
305 * firmware tossed the packet.
307 enum brcmf_fws_txstatus
{
308 BRCMF_FWS_TXSTATUS_DISCARD
,
309 BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
,
310 BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
,
311 BRCMF_FWS_TXSTATUS_FW_TOSSED
314 enum brcmf_fws_fcmode
{
315 BRCMF_FWS_FCMODE_NONE
,
316 BRCMF_FWS_FCMODE_IMPLIED_CREDIT
,
317 BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
320 enum brcmf_fws_mac_desc_state
{
321 BRCMF_FWS_STATE_OPEN
= 1,
322 BRCMF_FWS_STATE_CLOSE
326 * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface
328 * @occupied: slot is in use.
329 * @mac_handle: handle for mac entry determined by firmware.
330 * @interface_id: interface index.
331 * @state: current state.
332 * @suppressed: mac entry is suppressed.
333 * @generation: generation bit.
334 * @ac_bitmap: ac queue bitmap.
335 * @requested_credit: credits requested by firmware.
336 * @ea: ethernet address.
337 * @seq: per-node free-running sequence.
338 * @psq: power-save queue.
339 * @transit_count: packet in transit to firmware.
341 struct brcmf_fws_mac_descriptor
{
352 u8 seq
[BRCMF_FWS_FIFO_COUNT
];
356 int suppr_transit_count
;
357 bool send_tim_signal
;
358 u8 traffic_pending_bmp
;
359 u8 traffic_lastreported_bmp
;
362 #define BRCMF_FWS_HANGER_MAXITEMS 1024
365 * enum brcmf_fws_hanger_item_state - state of hanger item.
367 * @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use.
368 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use.
369 * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed.
371 enum brcmf_fws_hanger_item_state
{
372 BRCMF_FWS_HANGER_ITEM_STATE_FREE
= 1,
373 BRCMF_FWS_HANGER_ITEM_STATE_INUSE
,
374 BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
379 * struct brcmf_fws_hanger_item - single entry for tx pending packet.
381 * @state: entry is either free or occupied.
383 * @pkt: packet itself.
385 struct brcmf_fws_hanger_item
{
386 enum brcmf_fws_hanger_item_state state
;
392 * struct brcmf_fws_hanger - holds packets awaiting firmware txstatus.
394 * @pushed: packets pushed to await txstatus.
395 * @popped: packets popped upon handling txstatus.
396 * @failed_to_push: packets that could not be pushed.
397 * @failed_to_pop: packets that could not be popped.
398 * @failed_slotfind: packets for which failed to find an entry.
399 * @slot_pos: last returned item index for a free entry.
400 * @items: array of hanger items.
402 struct brcmf_fws_hanger
{
409 struct brcmf_fws_hanger_item items
[BRCMF_FWS_HANGER_MAXITEMS
];
412 struct brcmf_fws_macdesc_table
{
413 struct brcmf_fws_mac_descriptor nodes
[BRCMF_FWS_MAC_DESC_TABLE_SIZE
];
414 struct brcmf_fws_mac_descriptor iface
[BRCMF_MAX_IFS
];
415 struct brcmf_fws_mac_descriptor other
;
418 struct brcmf_fws_info
{
419 struct brcmf_pub
*drvr
;
420 struct brcmf_fws_stats stats
;
421 struct brcmf_fws_hanger hanger
;
422 enum brcmf_fws_fcmode fcmode
;
423 struct brcmf_fws_macdesc_table desc
;
424 struct workqueue_struct
*fws_wq
;
425 struct work_struct fws_dequeue_work
;
426 u32 fifo_enqpkt
[BRCMF_FWS_FIFO_COUNT
];
427 int fifo_credit
[BRCMF_FWS_FIFO_COUNT
];
428 int deq_node_pos
[BRCMF_FWS_FIFO_COUNT
];
434 * brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index.
436 static const int brcmf_fws_prio2fifo
[] = {
437 BRCMF_FWS_FIFO_AC_BE
,
438 BRCMF_FWS_FIFO_AC_BK
,
439 BRCMF_FWS_FIFO_AC_BK
,
440 BRCMF_FWS_FIFO_AC_BE
,
441 BRCMF_FWS_FIFO_AC_VI
,
442 BRCMF_FWS_FIFO_AC_VI
,
443 BRCMF_FWS_FIFO_AC_VO
,
448 module_param(fcmode
, int, S_IRUSR
);
449 MODULE_PARM_DESC(fcmode
, "mode of firmware signalled flow control");
451 #define BRCMF_FWS_TLV_DEF(name, id, len) \
452 case BRCMF_FWS_TYPE_ ## name: \
456 * brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
458 * @fws: firmware-signalling information.
459 * @id: identifier of the TLV.
461 * Return: the specified length for the given TLV; Otherwise -EINVAL.
463 static int brcmf_fws_get_tlv_len(struct brcmf_fws_info
*fws
,
464 enum brcmf_fws_tlv_type id
)
467 BRCMF_FWS_TLV_DEFLIST
469 fws
->stats
.tlv_invalid_type
++;
474 #undef BRCMF_FWS_TLV_DEF
476 static bool brcmf_fws_ifidx_match(struct sk_buff
*skb
, void *arg
)
478 u32 ifidx
= brcmf_skb_if_flags_get_field(skb
, INDEX
);
479 return ifidx
== *(int *)arg
;
482 static void brcmf_fws_psq_flush(struct brcmf_fws_info
*fws
, struct pktq
*q
,
485 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
490 matchfn
= brcmf_fws_ifidx_match
;
491 for (prec
= 0; prec
< q
->num_prec
; prec
++) {
492 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
494 brcmu_pkt_buf_free_skb(skb
);
495 skb
= brcmu_pktq_pdeq_match(q
, prec
, matchfn
, &ifidx
);
500 static void brcmf_fws_hanger_init(struct brcmf_fws_hanger
*hanger
)
504 brcmf_dbg(TRACE
, "enter\n");
505 memset(hanger
, 0, sizeof(*hanger
));
506 for (i
= 0; i
< ARRAY_SIZE(hanger
->items
); i
++)
507 hanger
->items
[i
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
510 static u32
brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger
*h
)
514 brcmf_dbg(TRACE
, "enter\n");
515 i
= (h
->slot_pos
+ 1) % BRCMF_FWS_HANGER_MAXITEMS
;
517 while (i
!= h
->slot_pos
) {
518 if (h
->items
[i
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
523 if (i
== BRCMF_FWS_HANGER_MAXITEMS
)
526 brcmf_err("all slots occupied\n");
527 h
->failed_slotfind
++;
528 i
= BRCMF_FWS_HANGER_MAXITEMS
;
530 brcmf_dbg(TRACE
, "exit: %d\n", i
);
534 static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger
*h
,
535 struct sk_buff
*pkt
, u32 slot_id
)
537 brcmf_dbg(TRACE
, "enter\n");
538 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
541 if (h
->items
[slot_id
].state
!= BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
542 brcmf_err("slot is not free\n");
547 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE
;
548 h
->items
[slot_id
].pkt
= pkt
;
553 static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger
*h
,
554 u32 slot_id
, struct sk_buff
**pktout
,
557 brcmf_dbg(TRACE
, "enter\n");
558 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
561 if (h
->items
[slot_id
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
562 brcmf_err("entry not in use\n");
567 *pktout
= h
->items
[slot_id
].pkt
;
569 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
570 h
->items
[slot_id
].pkt
= NULL
;
571 h
->items
[slot_id
].gen
= 0xff;
577 static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger
*h
,
580 brcmf_dbg(TRACE
, "enter\n");
582 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
585 h
->items
[slot_id
].gen
= gen
;
587 if (h
->items
[slot_id
].state
!= BRCMF_FWS_HANGER_ITEM_STATE_INUSE
) {
588 brcmf_err("entry not in use\n");
592 h
->items
[slot_id
].state
= BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
;
596 static int brcmf_fws_hanger_get_genbit(struct brcmf_fws_hanger
*hanger
,
597 struct sk_buff
*pkt
, u32 slot_id
,
600 brcmf_dbg(TRACE
, "enter\n");
603 if (slot_id
>= BRCMF_FWS_HANGER_MAXITEMS
)
606 if (hanger
->items
[slot_id
].state
== BRCMF_FWS_HANGER_ITEM_STATE_FREE
) {
607 brcmf_err("slot not in use\n");
611 *gen
= hanger
->items
[slot_id
].gen
;
615 static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info
*fws
,
616 bool (*fn
)(struct sk_buff
*, void *),
619 struct brcmf_fws_hanger
*h
= &fws
->hanger
;
622 enum brcmf_fws_hanger_item_state s
;
624 brcmf_dbg(TRACE
, "enter: ifidx=%d\n", ifidx
);
625 for (i
= 0; i
< ARRAY_SIZE(h
->items
); i
++) {
626 s
= h
->items
[i
].state
;
627 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
||
628 s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
) {
629 skb
= h
->items
[i
].pkt
;
630 if (fn
== NULL
|| fn(skb
, &ifidx
)) {
631 /* suppress packets freed from psq */
632 if (s
== BRCMF_FWS_HANGER_ITEM_STATE_INUSE
)
633 brcmu_pkt_buf_free_skb(skb
);
635 BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
641 static void brcmf_fws_init_mac_descriptor(struct brcmf_fws_mac_descriptor
*desc
,
645 "enter: desc %p ea=%pM, ifidx=%u\n", desc
, addr
, ifidx
);
647 desc
->state
= BRCMF_FWS_STATE_OPEN
;
648 desc
->requested_credit
= 0;
649 /* depending on use may need ifp->bssidx instead */
650 desc
->interface_id
= ifidx
;
651 desc
->ac_bitmap
= 0xff; /* update this when handling APSD */
653 memcpy(&desc
->ea
[0], addr
, ETH_ALEN
);
657 void brcmf_fws_clear_mac_descriptor(struct brcmf_fws_mac_descriptor
*desc
)
660 "enter: ea=%pM, ifidx=%u\n", desc
->ea
, desc
->interface_id
);
662 desc
->state
= BRCMF_FWS_STATE_CLOSE
;
663 desc
->requested_credit
= 0;
666 static struct brcmf_fws_mac_descriptor
*
667 brcmf_fws_mac_descriptor_lookup(struct brcmf_fws_info
*fws
, u8
*ea
)
669 struct brcmf_fws_mac_descriptor
*entry
;
672 brcmf_dbg(TRACE
, "enter: ea=%pM\n", ea
);
674 return ERR_PTR(-EINVAL
);
676 entry
= &fws
->desc
.nodes
[0];
677 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++) {
678 if (entry
->occupied
&& !memcmp(entry
->ea
, ea
, ETH_ALEN
))
683 return ERR_PTR(-ENOENT
);
686 static struct brcmf_fws_mac_descriptor
*
687 brcmf_fws_find_mac_desc(struct brcmf_fws_info
*fws
, struct brcmf_if
*ifp
,
690 struct brcmf_fws_mac_descriptor
*entry
= &fws
->desc
.other
;
692 enum nl80211_iftype iftype
;
694 brcmf_dbg(TRACE
, "enter: idx=%d\n", ifp
->bssidx
);
696 multicast
= is_multicast_ether_addr(da
);
697 iftype
= brcmf_cfg80211_get_iftype(ifp
);
699 /* Multicast destination and P2P clients get the interface entry.
700 * STA gets the interface entry if there is no exact match. For
701 * example, TDLS destinations have their own entry.
704 if ((multicast
|| iftype
== NL80211_IFTYPE_STATION
||
705 iftype
== NL80211_IFTYPE_P2P_CLIENT
) && ifp
->fws_desc
)
706 entry
= ifp
->fws_desc
;
708 if (entry
!= NULL
&& iftype
!= NL80211_IFTYPE_STATION
)
711 entry
= brcmf_fws_mac_descriptor_lookup(fws
, da
);
713 entry
= &fws
->desc
.other
;
716 brcmf_dbg(TRACE
, "exit: entry=%p\n", entry
);
720 static bool brcmf_fws_mac_desc_closed(struct brcmf_fws_info
*fws
,
721 struct brcmf_fws_mac_descriptor
*entry
,
724 struct brcmf_fws_mac_descriptor
*if_entry
;
727 /* for unique destination entries the related interface
730 if (entry
->mac_handle
) {
731 if_entry
= &fws
->desc
.iface
[entry
->interface_id
];
732 if (if_entry
->state
== BRCMF_FWS_STATE_CLOSE
)
735 /* an entry is closed when the state is closed and
736 * the firmware did not request anything.
738 closed
= entry
->state
== BRCMF_FWS_STATE_CLOSE
&&
739 !entry
->requested_credit
&& !entry
->requested_packet
;
741 /* Or firmware does not allow traffic for given fifo */
742 return closed
|| !(entry
->ac_bitmap
& BIT(fifo
));
745 static void brcmf_fws_mac_desc_cleanup(struct brcmf_fws_info
*fws
,
746 struct brcmf_fws_mac_descriptor
*entry
,
749 brcmf_dbg(TRACE
, "enter: entry=(ea=%pM, ifid=%d), ifidx=%d\n",
750 entry
->ea
, entry
->interface_id
, ifidx
);
751 if (entry
->occupied
&& (ifidx
== -1 || ifidx
== entry
->interface_id
)) {
752 brcmf_dbg(TRACE
, "flush psq: ifidx=%d, qlen=%d\n",
753 ifidx
, entry
->psq
.len
);
754 brcmf_fws_psq_flush(fws
, &entry
->psq
, ifidx
);
755 entry
->occupied
= !!(entry
->psq
.len
);
759 static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info
*fws
,
760 bool (*fn
)(struct sk_buff
*, void *),
763 struct brcmf_fws_hanger_item
*hi
;
769 brcmf_dbg(TRACE
, "enter: ifidx=%d\n", ifidx
);
770 txq
= brcmf_bus_gettxq(fws
->drvr
->bus_if
);
772 brcmf_dbg(TRACE
, "no txq to clean up\n");
776 for (prec
= 0; prec
< txq
->num_prec
; prec
++) {
777 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
779 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
780 hi
= &fws
->hanger
.items
[hslot
];
781 WARN_ON(skb
!= hi
->pkt
);
782 hi
->state
= BRCMF_FWS_HANGER_ITEM_STATE_FREE
;
783 brcmu_pkt_buf_free_skb(skb
);
784 skb
= brcmu_pktq_pdeq_match(txq
, prec
, fn
, &ifidx
);
789 static void brcmf_fws_cleanup(struct brcmf_fws_info
*fws
, int ifidx
)
792 struct brcmf_fws_mac_descriptor
*table
;
793 bool (*matchfn
)(struct sk_buff
*, void *) = NULL
;
795 brcmf_dbg(TRACE
, "enter: ifidx=%d\n", ifidx
);
800 matchfn
= brcmf_fws_ifidx_match
;
802 /* cleanup individual nodes */
803 table
= &fws
->desc
.nodes
[0];
804 for (i
= 0; i
< ARRAY_SIZE(fws
->desc
.nodes
); i
++)
805 brcmf_fws_mac_desc_cleanup(fws
, &table
[i
], ifidx
);
807 brcmf_fws_mac_desc_cleanup(fws
, &fws
->desc
.other
, ifidx
);
808 brcmf_fws_bus_txq_cleanup(fws
, matchfn
, ifidx
);
809 brcmf_fws_hanger_cleanup(fws
, matchfn
, ifidx
);
812 static void brcmf_fws_tim_update(struct brcmf_fws_info
*ctx
,
813 struct brcmf_fws_mac_descriptor
*entry
,
816 brcmf_dbg(TRACE
, "enter: ea=%pM\n", entry
->ea
);
817 if (entry
->state
== BRCMF_FWS_STATE_CLOSE
) {
818 /* check delayedQ and suppressQ in one call using bitmap */
819 if (brcmu_pktq_mlen(&entry
->psq
, 3 << (prec
* 2)) == 0)
820 entry
->traffic_pending_bmp
=
821 entry
->traffic_pending_bmp
& ~NBITVAL(prec
);
823 entry
->traffic_pending_bmp
=
824 entry
->traffic_pending_bmp
| NBITVAL(prec
);
826 /* request a TIM update to firmware at the next piggyback opportunity */
827 if (entry
->traffic_lastreported_bmp
!= entry
->traffic_pending_bmp
)
828 entry
->send_tim_signal
= true;
832 brcmf_fws_flow_control_check(struct brcmf_fws_info
*fws
, struct pktq
*pq
,
835 struct brcmf_if
*ifp
= fws
->drvr
->iflist
[if_id
];
838 "enter: bssidx=%d, ifidx=%d\n", ifp
->bssidx
, ifp
->ifidx
);
842 if ((ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
843 pq
->len
<= BRCMF_FWS_FLOWCONTROL_LOWATER
)
844 brcmf_txflowblock_if(ifp
,
845 BRCMF_NETIF_STOP_REASON_FWS_FC
, false);
846 if (!(ifp
->netif_stop
& BRCMF_NETIF_STOP_REASON_FWS_FC
) &&
847 pq
->len
>= BRCMF_FWS_FLOWCONTROL_HIWATER
)
848 brcmf_txflowblock_if(ifp
, BRCMF_NETIF_STOP_REASON_FWS_FC
, true);
852 static int brcmf_fws_rssi_indicate(struct brcmf_fws_info
*fws
, s8 rssi
)
854 brcmf_dbg(CTL
, "rssi %d\n", rssi
);
859 int brcmf_fws_macdesc_indicate(struct brcmf_fws_info
*fws
, u8 type
, u8
*data
)
861 struct brcmf_fws_mac_descriptor
*entry
, *existing
;
866 mac_handle
= *data
++;
870 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
871 if (type
== BRCMF_FWS_TYPE_MACDESC_DEL
) {
872 brcmf_dbg(TRACE
, "deleting mac %pM idx %d\n", addr
, ifidx
);
874 brcmf_fws_clear_mac_descriptor(entry
);
876 fws
->stats
.mac_update_failed
++;
881 "add mac %pM handle %u idx %d\n", addr
, mac_handle
, ifidx
);
882 existing
= brcmf_fws_mac_descriptor_lookup(fws
, addr
);
883 if (IS_ERR(existing
)) {
884 if (!entry
->occupied
) {
885 entry
->mac_handle
= mac_handle
;
886 brcmf_fws_init_mac_descriptor(entry
, addr
, ifidx
);
887 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
890 fws
->stats
.mac_update_failed
++;
893 if (entry
!= existing
) {
894 brcmf_dbg(TRACE
, "relocate mac\n");
895 memcpy(entry
, existing
,
896 offsetof(struct brcmf_fws_mac_descriptor
, psq
));
897 entry
->mac_handle
= mac_handle
;
898 brcmf_fws_clear_mac_descriptor(existing
);
900 brcmf_dbg(TRACE
, "use existing\n");
901 WARN_ON(entry
->mac_handle
!= mac_handle
);
902 /* TODO: what should we do here: continue, reinit, .. */
908 static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info
*fws
,
911 struct brcmf_fws_mac_descriptor
*entry
;
915 mac_handle
= data
[0];
916 entry
= &fws
->desc
.nodes
[mac_handle
& 0x1F];
917 if (!entry
->occupied
) {
918 fws
->stats
.mac_ps_update_failed
++;
922 /* a state update should wipe old credits? */
923 entry
->requested_credit
= 0;
924 if (type
== BRCMF_FWS_TYPE_MAC_OPEN
) {
925 entry
->state
= BRCMF_FWS_STATE_OPEN
;
926 return BRCMF_FWS_RET_OK_SCHEDULE
;
928 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
929 for (i
= BRCMF_FWS_FIFO_AC_BE
; i
< NL80211_NUM_ACS
; i
++)
930 brcmf_fws_tim_update(fws
, entry
, i
);
932 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
935 static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info
*fws
,
938 struct brcmf_fws_mac_descriptor
*entry
;
944 brcmf_dbg(TRACE
, "enter: ifidx=%d\n", ifidx
);
945 if (ifidx
>= BRCMF_MAX_IFS
) {
950 entry
= &fws
->desc
.iface
[ifidx
];
951 if (!entry
->occupied
) {
957 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
958 entry
->state
= BRCMF_FWS_STATE_OPEN
;
959 return BRCMF_FWS_RET_OK_SCHEDULE
;
960 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
961 entry
->state
= BRCMF_FWS_STATE_CLOSE
;
962 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
968 fws
->stats
.if_update_failed
++;
972 static int brcmf_fws_request_indicate(struct brcmf_fws_info
*fws
, u8 type
,
975 struct brcmf_fws_mac_descriptor
*entry
;
977 entry
= &fws
->desc
.nodes
[data
[1] & 0x1F];
978 if (!entry
->occupied
) {
979 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
980 fws
->stats
.credit_request_failed
++;
982 fws
->stats
.packet_request_failed
++;
986 if (type
== BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
)
987 entry
->requested_credit
= data
[0];
989 entry
->requested_packet
= data
[0];
991 entry
->ac_bitmap
= data
[2];
992 return BRCMF_FWS_RET_OK_SCHEDULE
;
995 static void brcmf_fws_return_credits(struct brcmf_fws_info
*fws
,
1001 fws
->fifo_credit_map
|= 1 << fifo
;
1002 fws
->fifo_credit
[fifo
] += credits
;
1005 static void brcmf_fws_schedule_deq(struct brcmf_fws_info
*fws
)
1007 /* only schedule dequeue when there are credits for delayed traffic */
1008 if (fws
->fifo_credit_map
& fws
->fifo_delay_map
)
1009 queue_work(fws
->fws_wq
, &fws
->fws_dequeue_work
);
1012 static void brcmf_skb_pick_up_credit(struct brcmf_fws_info
*fws
, int fifo
,
1015 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(p
)->mac
;
1017 if (brcmf_skbcb(p
)->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
) {
1018 if (fws
->fcmode
!= BRCMF_FWS_FCMODE_IMPLIED_CREDIT
)
1020 brcmf_fws_return_credits(fws
, fifo
, 1);
1023 * if this packet did not count against FIFO credit, it
1024 * must have taken a requested_credit from the destination
1025 * entry (for pspoll etc.)
1027 if (!brcmf_skb_if_flags_get_field(p
, REQUESTED
))
1028 entry
->requested_credit
++;
1030 brcmf_fws_schedule_deq(fws
);
1033 static int brcmf_fws_enq(struct brcmf_fws_info
*fws
,
1034 enum brcmf_fws_skb_state state
, int fifo
,
1037 int prec
= 2 * fifo
;
1038 u32
*qfull_stat
= &fws
->stats
.delayq_full_error
;
1040 struct brcmf_fws_mac_descriptor
*entry
;
1042 entry
= brcmf_skbcb(p
)->mac
;
1043 if (entry
== NULL
) {
1044 brcmf_err("no mac descriptor found for skb %p\n", p
);
1048 brcmf_dbg(TRACE
, "enter: ea=%pM, qlen=%d\n", entry
->ea
, entry
->psq
.len
);
1049 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
) {
1051 qfull_stat
= &fws
->stats
.supprq_full_error
;
1054 if (brcmu_pktq_penq(&entry
->psq
, prec
, p
) == NULL
) {
1059 /* increment total enqueued packet count */
1060 fws
->fifo_delay_map
|= 1 << fifo
;
1061 fws
->fifo_enqpkt
[fifo
]++;
1063 /* update the sk_buff state */
1064 brcmf_skbcb(p
)->state
= state
;
1065 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
)
1066 entry
->suppress_count
++;
1069 * A packet has been pushed so update traffic
1070 * availability bitmap, if applicable
1072 brcmf_fws_tim_update(fws
, entry
, fifo
);
1073 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1074 brcmf_skb_if_flags_get_field(p
, INDEX
));
1078 static struct sk_buff
*brcmf_fws_deq(struct brcmf_fws_info
*fws
, int fifo
)
1080 struct brcmf_fws_mac_descriptor
*table
;
1081 struct brcmf_fws_mac_descriptor
*entry
;
1090 table
= (struct brcmf_fws_mac_descriptor
*)&fws
->desc
;
1091 num_nodes
= sizeof(fws
->desc
) / sizeof(struct brcmf_fws_mac_descriptor
);
1092 node_pos
= fws
->deq_node_pos
[fifo
];
1094 for (i
= 0; i
< num_nodes
; i
++) {
1095 entry
= &table
[(node_pos
+ i
) % num_nodes
];
1096 if (!entry
->occupied
||
1097 brcmf_fws_mac_desc_closed(fws
, entry
, fifo
))
1100 if (entry
->suppressed
)
1104 p
= brcmu_pktq_mdeq(&entry
->psq
, pmsk
<< (fifo
* 2), &prec_out
);
1106 if (entry
->suppressed
) {
1107 if (entry
->suppr_transit_count
>
1108 entry
->suppress_count
)
1110 entry
->suppressed
= false;
1111 p
= brcmu_pktq_mdeq(&entry
->psq
,
1112 1 << (fifo
* 2), &prec_out
);
1118 /* did the packet come from suppress sub-queue? */
1119 if (entry
->requested_credit
> 0) {
1120 entry
->requested_credit
--;
1122 * if the packet was pulled out while destination is in
1123 * closed state but had a non-zero packets requested,
1124 * then this should not count against the FIFO credit.
1125 * That is due to the fact that the firmware will
1126 * most likely hold onto this packet until a suitable
1127 * time later to push it to the appropriate AC FIFO.
1129 if (entry
->state
== BRCMF_FWS_STATE_CLOSE
)
1131 } else if (entry
->requested_packet
> 0) {
1132 entry
->requested_packet
--;
1133 brcmf_skb_if_flags_set_field(p
, REQUESTED
, 1);
1134 if (entry
->state
== BRCMF_FWS_STATE_CLOSE
)
1137 brcmf_skb_if_flags_set_field(p
, CREDITCHECK
, use_credit
);
1139 /* move dequeue position to ensure fair round-robin */
1140 fws
->deq_node_pos
[fifo
] = (node_pos
+ i
+ 1) % num_nodes
;
1141 brcmf_fws_flow_control_check(fws
, &entry
->psq
,
1142 brcmf_skb_if_flags_get_field(p
,
1146 * A packet has been picked up, update traffic
1147 * availability bitmap, if applicable
1149 brcmf_fws_tim_update(fws
, entry
, fifo
);
1152 * decrement total enqueued fifo packets and
1153 * clear delay bitmap if done.
1155 fws
->fifo_enqpkt
[fifo
]--;
1156 if (fws
->fifo_enqpkt
[fifo
] == 0)
1157 fws
->fifo_delay_map
&= ~(1 << fifo
);
1162 brcmf_dbg(TRACE
, "exit: fifo %d skb %p\n", fifo
, p
);
1166 static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info
*fws
, int fifo
,
1167 struct sk_buff
*skb
, u32 genbit
)
1169 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1173 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1175 /* this packet was suppressed */
1176 if (!entry
->suppressed
|| entry
->generation
!= genbit
) {
1177 entry
->suppressed
= true;
1178 entry
->suppress_count
= brcmu_pktq_mlen(&entry
->psq
,
1179 1 << (fifo
* 2 + 1));
1180 entry
->suppr_transit_count
= entry
->transit_count
;
1183 entry
->generation
= genbit
;
1185 ret
= brcmf_fws_enq(fws
, BRCMF_FWS_SKBSTATE_SUPPRESSED
, fifo
, skb
);
1187 /* suppress q is full, drop this packet */
1188 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1192 * Mark suppressed to avoid a double free during
1195 brcmf_fws_hanger_mark_suppressed(&fws
->hanger
, hslot
,
1197 entry
->suppress_count
++;
1204 brcmf_fws_txstatus_process(struct brcmf_fws_info
*fws
, u8 flags
, u32 hslot
,
1209 bool remove_from_hanger
= true;
1210 struct sk_buff
*skb
;
1211 struct brcmf_fws_mac_descriptor
*entry
= NULL
;
1213 brcmf_dbg(TRACE
, "status: flags=0x%X, hslot=%d\n",
1216 if (flags
== BRCMF_FWS_TXSTATUS_DISCARD
)
1217 fws
->stats
.txs_discard
++;
1218 else if (flags
== BRCMF_FWS_TXSTATUS_CORE_SUPPRESS
) {
1219 fws
->stats
.txs_supp_core
++;
1220 remove_from_hanger
= false;
1221 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS
) {
1222 fws
->stats
.txs_supp_ps
++;
1223 remove_from_hanger
= false;
1224 } else if (flags
== BRCMF_FWS_TXSTATUS_FW_TOSSED
)
1225 fws
->stats
.txs_tossed
++;
1227 brcmf_err("unexpected txstatus\n");
1229 ret
= brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &skb
,
1230 remove_from_hanger
);
1232 brcmf_err("no packet in hanger slot: hslot=%d\n", hslot
);
1236 entry
= brcmf_skbcb(skb
)->mac
;
1237 if (WARN_ON(!entry
)) {
1238 brcmu_pkt_buf_free_skb(skb
);
1242 /* pick up the implicit credit from this packet */
1243 fifo
= brcmf_skb_htod_tag_get_field(skb
, FIFO
);
1244 brcmf_skb_pick_up_credit(fws
, fifo
, skb
);
1246 if (!remove_from_hanger
)
1247 ret
= brcmf_fws_txstatus_suppressed(fws
, fifo
, skb
, genbit
);
1249 if (remove_from_hanger
|| ret
) {
1250 entry
->transit_count
--;
1251 if (entry
->suppressed
)
1252 entry
->suppr_transit_count
--;
1254 brcmf_txfinalize(fws
->drvr
, skb
, true);
1259 static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info
*fws
,
1264 if (fws
->fcmode
!= BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
) {
1265 brcmf_dbg(INFO
, "ignored\n");
1266 return BRCMF_FWS_RET_OK_NOSCHEDULE
;
1269 brcmf_dbg(TRACE
, "enter: data %pM\n", data
);
1270 for (i
= 0; i
< BRCMF_FWS_FIFO_COUNT
; i
++)
1271 brcmf_fws_return_credits(fws
, i
, data
[i
]);
1273 brcmf_dbg(INFO
, "map: credit %x delay %x\n", fws
->fifo_credit_map
,
1274 fws
->fifo_delay_map
);
1275 return BRCMF_FWS_RET_OK_SCHEDULE
;
1278 static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info
*fws
, u8
*data
)
1286 fws
->stats
.txs_indicate
++;
1287 memcpy(&status_le
, data
, sizeof(status_le
));
1288 status
= le32_to_cpu(status_le
);
1289 flags
= brcmf_txstatus_get_field(status
, FLAGS
);
1290 hslot
= brcmf_txstatus_get_field(status
, HSLOT
);
1291 genbit
= brcmf_txstatus_get_field(status
, GENERATION
);
1293 return brcmf_fws_txstatus_process(fws
, flags
, hslot
, genbit
);
1296 static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info
*fws
, u8
*data
)
1300 memcpy(×tamp
, &data
[2], sizeof(timestamp
));
1301 brcmf_dbg(INFO
, "received: seq %d, timestamp %d\n", data
[1],
1302 le32_to_cpu(timestamp
));
1306 /* using macro so sparse checking does not complain
1307 * about locking imbalance.
1309 #define brcmf_fws_lock(drvr, flags) \
1312 spin_lock_irqsave(&((drvr)->fws_spinlock), (flags)); \
1315 /* using macro so sparse checking does not complain
1316 * about locking imbalance.
1318 #define brcmf_fws_unlock(drvr, flags) \
1319 spin_unlock_irqrestore(&((drvr)->fws_spinlock), (flags))
1321 static int brcmf_fws_notify_credit_map(struct brcmf_if
*ifp
,
1322 const struct brcmf_event_msg
*e
,
1325 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1330 if (e
->datalen
< BRCMF_FWS_FIFO_COUNT
) {
1331 brcmf_err("event payload too small (%d)\n", e
->datalen
);
1335 brcmf_dbg(TRACE
, "enter: credits %pM\n", credits
);
1336 brcmf_fws_lock(ifp
->drvr
, flags
);
1337 for (i
= 0; i
< ARRAY_SIZE(fws
->fifo_credit
); i
++) {
1339 fws
->fifo_credit_map
|= 1 << i
;
1341 fws
->fifo_credit_map
&= ~(1 << i
);
1342 fws
->fifo_credit
[i
] = *credits
++;
1344 brcmf_fws_schedule_deq(fws
);
1345 brcmf_fws_unlock(ifp
->drvr
, flags
);
1349 int brcmf_fws_hdrpull(struct brcmf_pub
*drvr
, int ifidx
, s16 signal_len
,
1350 struct sk_buff
*skb
)
1352 struct brcmf_fws_info
*fws
= drvr
->fws
;
1362 brcmf_dbg(TRACE
, "enter: ifidx %d, skblen %u, sig %d\n",
1363 ifidx
, skb
->len
, signal_len
);
1365 WARN_ON(signal_len
> skb
->len
);
1367 /* if flow control disabled, skip to packet data and leave */
1368 if (!signal_len
|| !drvr
->fw_signals
) {
1369 skb_pull(skb
, signal_len
);
1373 /* lock during tlv parsing */
1374 brcmf_fws_lock(drvr
, flags
);
1376 fws
->stats
.header_pulls
++;
1377 data_len
= signal_len
;
1378 signal_data
= skb
->data
;
1380 status
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1381 while (data_len
> 0) {
1382 /* extract tlv info */
1383 type
= signal_data
[0];
1385 /* FILLER type is actually not a TLV, but
1386 * a single byte that can be skipped.
1388 if (type
== BRCMF_FWS_TYPE_FILLER
) {
1393 len
= signal_data
[1];
1394 data
= signal_data
+ 2;
1396 brcmf_dbg(INFO
, "tlv type=%d (%s), len=%d, data[0]=%d\n", type
,
1397 brcmf_fws_get_tlv_name(type
), len
, *data
);
1399 /* abort parsing when length invalid */
1400 if (data_len
< len
+ 2)
1403 if (len
!= brcmf_fws_get_tlv_len(fws
, type
))
1406 err
= BRCMF_FWS_RET_OK_NOSCHEDULE
;
1408 case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS
:
1409 case BRCMF_FWS_TYPE_COMP_TXSTATUS
:
1411 case BRCMF_FWS_TYPE_MACDESC_ADD
:
1412 case BRCMF_FWS_TYPE_MACDESC_DEL
:
1413 brcmf_fws_macdesc_indicate(fws
, type
, data
);
1415 case BRCMF_FWS_TYPE_MAC_OPEN
:
1416 case BRCMF_FWS_TYPE_MAC_CLOSE
:
1417 err
= brcmf_fws_macdesc_state_indicate(fws
, type
, data
);
1419 case BRCMF_FWS_TYPE_INTERFACE_OPEN
:
1420 case BRCMF_FWS_TYPE_INTERFACE_CLOSE
:
1421 err
= brcmf_fws_interface_state_indicate(fws
, type
,
1424 case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT
:
1425 case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET
:
1426 err
= brcmf_fws_request_indicate(fws
, type
, data
);
1428 case BRCMF_FWS_TYPE_TXSTATUS
:
1429 brcmf_fws_txstatus_indicate(fws
, data
);
1431 case BRCMF_FWS_TYPE_FIFO_CREDITBACK
:
1432 err
= brcmf_fws_fifocreditback_indicate(fws
, data
);
1434 case BRCMF_FWS_TYPE_RSSI
:
1435 brcmf_fws_rssi_indicate(fws
, *data
);
1437 case BRCMF_FWS_TYPE_TRANS_ID
:
1438 brcmf_fws_dbg_seqnum_check(fws
, data
);
1440 case BRCMF_FWS_TYPE_PKTTAG
:
1441 case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
:
1443 fws
->stats
.tlv_invalid_type
++;
1446 if (err
== BRCMF_FWS_RET_OK_SCHEDULE
)
1447 status
= BRCMF_FWS_RET_OK_SCHEDULE
;
1448 signal_data
+= len
+ 2;
1449 data_len
-= len
+ 2;
1453 fws
->stats
.tlv_parse_failed
++;
1455 if (status
== BRCMF_FWS_RET_OK_SCHEDULE
)
1456 brcmf_fws_schedule_deq(fws
);
1458 /* signalling processing result does
1459 * not affect the actual ethernet packet.
1461 skb_pull(skb
, signal_len
);
1463 /* this may be a signal-only packet
1466 fws
->stats
.header_only_pkt
++;
1468 brcmf_fws_unlock(drvr
, flags
);
1472 static int brcmf_fws_hdrpush(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
1474 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1476 u16 data_offset
= 0;
1478 __le32 pkttag
= cpu_to_le32(brcmf_skbcb(skb
)->htod
);
1480 brcmf_dbg(TRACE
, "enter: ea=%pM, ifidx=%u, pkttag=0x%08X\n",
1481 entry
->ea
, entry
->interface_id
, le32_to_cpu(pkttag
));
1482 if (entry
->send_tim_signal
)
1483 data_offset
+= 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
1485 /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
1486 data_offset
+= 2 + BRCMF_FWS_TYPE_PKTTAG_LEN
;
1487 fillers
= round_up(data_offset
, 4) - data_offset
;
1488 data_offset
+= fillers
;
1490 skb_push(skb
, data_offset
);
1493 wlh
[0] = BRCMF_FWS_TYPE_PKTTAG
;
1494 wlh
[1] = BRCMF_FWS_TYPE_PKTTAG_LEN
;
1495 memcpy(&wlh
[2], &pkttag
, sizeof(pkttag
));
1496 wlh
+= BRCMF_FWS_TYPE_PKTTAG_LEN
+ 2;
1498 if (entry
->send_tim_signal
) {
1499 entry
->send_tim_signal
= 0;
1500 wlh
[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP
;
1501 wlh
[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
;
1502 wlh
[2] = entry
->mac_handle
;
1503 wlh
[3] = entry
->traffic_pending_bmp
;
1504 wlh
+= BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN
+ 2;
1505 entry
->traffic_lastreported_bmp
= entry
->traffic_pending_bmp
;
1508 memset(wlh
, BRCMF_FWS_TYPE_FILLER
, fillers
);
1510 brcmf_proto_hdrpush(fws
->drvr
, brcmf_skb_if_flags_get_field(skb
, INDEX
),
1511 data_offset
>> 2, skb
);
1515 static int brcmf_fws_precommit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1518 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(p
);
1519 struct brcmf_fws_mac_descriptor
*entry
= skcb
->mac
;
1522 int hslot
= BRCMF_FWS_HANGER_MAXITEMS
;
1527 header_needed
= skcb
->state
!= BRCMF_FWS_SKBSTATE_SUPPRESSED
;
1529 if (header_needed
) {
1530 /* obtaining free slot may fail, but that will be caught
1531 * by the hanger push. This assures the packet has a BDC
1532 * header upon return.
1534 hslot
= brcmf_fws_hanger_get_free_slot(&fws
->hanger
);
1535 free_ctr
= entry
->seq
[fifo
];
1536 brcmf_skb_htod_tag_set_field(p
, HSLOT
, hslot
);
1537 brcmf_skb_htod_tag_set_field(p
, FREERUN
, free_ctr
);
1538 brcmf_skb_htod_tag_set_field(p
, GENERATION
, 1);
1539 entry
->transit_count
++;
1541 brcmf_skb_if_flags_set_field(p
, TRANSMIT
, 1);
1542 brcmf_skb_htod_tag_set_field(p
, FIFO
, fifo
);
1544 flags
= BRCMF_FWS_HTOD_FLAG_PKTFROMHOST
;
1545 if (!(skcb
->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
)) {
1547 Indicate that this packet is being sent in response to an
1548 explicit request from the firmware side.
1550 flags
|= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED
;
1552 brcmf_skb_htod_tag_set_field(p
, FLAGS
, flags
);
1553 if (header_needed
) {
1554 brcmf_fws_hdrpush(fws
, p
);
1555 rc
= brcmf_fws_hanger_pushpkt(&fws
->hanger
, p
, hslot
);
1557 brcmf_err("hanger push failed: rc=%d\n", rc
);
1561 /* remove old header */
1562 rc
= brcmf_proto_hdrpull(fws
->drvr
, false, &ifidx
, p
);
1564 hslot
= brcmf_skb_htod_tag_get_field(p
, HSLOT
);
1565 brcmf_fws_hanger_get_genbit(&fws
->hanger
, p
,
1567 brcmf_skb_htod_tag_set_field(p
, GENERATION
, gen
);
1569 /* push new header */
1570 brcmf_fws_hdrpush(fws
, p
);
1578 brcmf_fws_rollback_toq(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
1581 put the packet back to the head of queue
1583 - suppressed packet goes back to suppress sub-queue
1584 - pull out the header, if new or delayed packet
1586 Note: hslot is used only when header removal is done.
1588 struct brcmf_fws_mac_descriptor
*entry
;
1589 enum brcmf_fws_skb_state state
;
1590 struct sk_buff
*pktout
;
1596 fifo
= brcmf_skb_if_flags_get_field(skb
, FIFO
);
1597 state
= brcmf_skbcb(skb
)->state
;
1598 entry
= brcmf_skbcb(skb
)->mac
;
1600 if (entry
!= NULL
) {
1601 if (state
== BRCMF_FWS_SKBSTATE_SUPPRESSED
) {
1602 /* wl-header is saved for suppressed packets */
1603 pktout
= brcmu_pktq_penq_head(&entry
->psq
, 2 * fifo
+ 1,
1605 if (pktout
== NULL
) {
1606 brcmf_err("suppress queue full\n");
1610 hslot
= brcmf_skb_htod_tag_get_field(skb
, HSLOT
);
1612 /* remove header first */
1613 rc
= brcmf_proto_hdrpull(fws
->drvr
, false, &ifidx
, skb
);
1615 brcmf_err("header removal failed\n");
1616 /* free the hanger slot */
1617 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
,
1619 brcmf_txfinalize(fws
->drvr
, skb
, false);
1624 /* delay-q packets are going to delay-q */
1625 pktout
= brcmu_pktq_penq_head(&entry
->psq
,
1627 if (pktout
== NULL
) {
1628 brcmf_err("delay queue full\n");
1632 /* free the hanger slot */
1633 brcmf_fws_hanger_poppkt(&fws
->hanger
, hslot
, &pktout
,
1636 /* decrement sequence count */
1640 if this packet did not count against FIFO credit, it must have
1641 taken a requested_credit from the firmware (for pspoll etc.)
1643 if (!(brcmf_skbcb(skb
)->if_flags
&
1644 BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
))
1645 entry
->requested_credit
++;
1647 brcmf_err("no mac entry linked\n");
1654 fws
->stats
.rollback_failed
++;
1656 fws
->stats
.rollback_success
++;
1660 static int brcmf_fws_consume_credit(struct brcmf_fws_info
*fws
, int fifo
,
1661 struct sk_buff
*skb
)
1663 struct brcmf_fws_mac_descriptor
*entry
= brcmf_skbcb(skb
)->mac
;
1664 int *credit
= &fws
->fifo_credit
[fifo
];
1667 brcmf_dbg(TRACE
, "enter: ac=%d, credits=%d\n", fifo
, *credit
);
1669 if (entry
->requested_credit
> 0) {
1671 * if the packet was pulled out while destination is in
1672 * closed state but had a non-zero packets requested,
1673 * then this should not count against the FIFO credit.
1674 * That is due to the fact that the firmware will
1675 * most likely hold onto this packet until a suitable
1676 * time later to push it to the appropriate AC FIFO.
1678 entry
->requested_credit
--;
1679 if (entry
->state
== BRCMF_FWS_STATE_CLOSE
)
1681 } else if (entry
->requested_packet
> 0) {
1682 entry
->requested_packet
--;
1683 brcmf_skb_if_flags_set_field(skb
, REQUESTED
, 1);
1684 if (entry
->state
== BRCMF_FWS_STATE_CLOSE
)
1687 brcmf_skb_if_flags_set_field(skb
, CREDITCHECK
, use_credit
);
1689 brcmf_dbg(TRACE
, "exit: no creditcheck set\n");
1694 brcmf_dbg(TRACE
, "exit: credits depleted\n");
1699 fws
->fifo_credit_map
&= ~(1 << fifo
);
1700 brcmf_dbg(TRACE
, "exit: ac=%d, credits=%d\n", fifo
, *credit
);
1704 static int brcmf_fws_commit_skb(struct brcmf_fws_info
*fws
, int fifo
,
1705 struct sk_buff
*skb
)
1707 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1708 struct brcmf_fws_mac_descriptor
*entry
;
1709 struct brcmf_bus
*bus
= fws
->drvr
->bus_if
;
1714 return PTR_ERR(entry
);
1716 rc
= brcmf_fws_precommit_skb(fws
, fifo
, skb
);
1718 fws
->stats
.generic_error
++;
1722 rc
= brcmf_bus_txdata(bus
, skb
);
1727 fws
->stats
.pkt2bus
++;
1728 if (brcmf_skbcb(skb
)->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
) {
1729 fws
->stats
.send_pkts
[fifo
]++;
1730 fws
->stats
.fifo_credits_sent
[fifo
]++;
1736 rc
= brcmf_fws_rollback_toq(fws
, skb
);
1740 int brcmf_fws_process_skb(struct brcmf_if
*ifp
, struct sk_buff
*skb
)
1742 struct brcmf_pub
*drvr
= ifp
->drvr
;
1743 struct brcmf_skbuff_cb
*skcb
= brcmf_skbcb(skb
);
1744 struct ethhdr
*eh
= (struct ethhdr
*)(skb
->data
);
1746 int fifo
= BRCMF_FWS_FIFO_BCMC
;
1747 bool multicast
= is_multicast_ether_addr(eh
->h_dest
);
1749 /* determine the priority */
1751 skb
->priority
= cfg80211_classify8021d(skb
);
1753 drvr
->tx_multicast
+= !!multicast
;
1754 if (ntohs(eh
->h_proto
) == ETH_P_PAE
)
1755 atomic_inc(&ifp
->pend_8021x_cnt
);
1757 if (!brcmf_fws_fc_active(drvr
->fws
)) {
1758 /* If the protocol uses a data header, apply it */
1759 brcmf_proto_hdrpush(drvr
, ifp
->ifidx
, 0, skb
);
1761 /* Use bus module to send data frame */
1762 return brcmf_bus_txdata(drvr
->bus_if
, skb
);
1765 /* set control buffer information */
1767 skcb
->mac
= brcmf_fws_find_mac_desc(drvr
->fws
, ifp
, eh
->h_dest
);
1768 skcb
->state
= BRCMF_FWS_SKBSTATE_NEW
;
1769 brcmf_skb_if_flags_set_field(skb
, INDEX
, ifp
->ifidx
);
1771 fifo
= brcmf_fws_prio2fifo
[skb
->priority
];
1772 brcmf_skb_if_flags_set_field(skb
, FIFO
, fifo
);
1774 brcmf_dbg(TRACE
, "ea=%pM, multi=%d, fifo=%d\n", eh
->h_dest
,
1777 brcmf_fws_lock(drvr
, flags
);
1778 if (skcb
->mac
->suppressed
||
1779 brcmf_fws_mac_desc_closed(drvr
->fws
, skcb
->mac
, fifo
) ||
1780 brcmu_pktq_mlen(&skcb
->mac
->psq
, 3 << (fifo
* 2)) ||
1782 brcmf_fws_consume_credit(drvr
->fws
, fifo
, skb
) < 0)) {
1783 /* enqueue the packet in delayQ */
1784 drvr
->fws
->fifo_delay_map
|= 1 << fifo
;
1785 brcmf_fws_enq(drvr
->fws
, BRCMF_FWS_SKBSTATE_DELAYED
, fifo
, skb
);
1787 brcmf_fws_commit_skb(drvr
->fws
, fifo
, skb
);
1789 brcmf_fws_unlock(drvr
, flags
);
1793 void brcmf_fws_reset_interface(struct brcmf_if
*ifp
)
1795 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1797 brcmf_dbg(TRACE
, "enter: idx=%d\n", ifp
->bssidx
);
1801 brcmf_fws_init_mac_descriptor(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1804 void brcmf_fws_add_interface(struct brcmf_if
*ifp
)
1806 struct brcmf_fws_info
*fws
= ifp
->drvr
->fws
;
1807 struct brcmf_fws_mac_descriptor
*entry
;
1809 brcmf_dbg(TRACE
, "enter: idx=%d, mac=%pM\n",
1810 ifp
->bssidx
, ifp
->mac_addr
);
1811 if (!ifp
->ndev
|| !ifp
->drvr
->fw_signals
)
1814 entry
= &fws
->desc
.iface
[ifp
->ifidx
];
1815 ifp
->fws_desc
= entry
;
1816 brcmf_fws_init_mac_descriptor(entry
, ifp
->mac_addr
, ifp
->ifidx
);
1817 brcmu_pktq_init(&entry
->psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1821 void brcmf_fws_del_interface(struct brcmf_if
*ifp
)
1823 struct brcmf_fws_mac_descriptor
*entry
= ifp
->fws_desc
;
1826 brcmf_dbg(TRACE
, "enter: idx=%d\n", ifp
->bssidx
);
1830 brcmf_fws_lock(ifp
->drvr
, flags
);
1831 ifp
->fws_desc
= NULL
;
1832 brcmf_fws_clear_mac_descriptor(entry
);
1833 brcmf_fws_cleanup(ifp
->drvr
->fws
, ifp
->ifidx
);
1834 brcmf_fws_unlock(ifp
->drvr
, flags
);
1837 static void brcmf_fws_dequeue_worker(struct work_struct
*worker
)
1839 struct brcmf_fws_info
*fws
;
1840 struct sk_buff
*skb
;
1845 fws
= container_of(worker
, struct brcmf_fws_info
, fws_dequeue_work
);
1847 brcmf_dbg(TRACE
, "enter: fws=%p\n", fws
);
1848 brcmf_fws_lock(fws
->drvr
, flags
);
1849 for (fifo
= NL80211_NUM_ACS
; fifo
>= 0; fifo
--) {
1850 brcmf_dbg(TRACE
, "fifo %d credit %d\n", fifo
,
1851 fws
->fifo_credit
[fifo
]);
1852 for (credit
= 0; credit
< fws
->fifo_credit
[fifo
]; /* nop */) {
1853 skb
= brcmf_fws_deq(fws
, fifo
);
1856 if (!brcmf_fws_commit_skb(fws
, fifo
, skb
) &&
1857 brcmf_skbcb(skb
)->if_flags
&
1858 BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
)
1861 fws
->fifo_credit
[fifo
] -= credit
;
1863 brcmf_fws_unlock(fws
->drvr
, flags
);
1866 int brcmf_fws_init(struct brcmf_pub
*drvr
)
1868 u32 tlv
= BRCMF_FWS_FLAGS_RSSI_SIGNALS
;
1871 if (!drvr
->fw_signals
)
1874 spin_lock_init(&drvr
->fws_spinlock
);
1876 drvr
->fws
= kzalloc(sizeof(*(drvr
->fws
)), GFP_KERNEL
);
1882 /* set linkage back */
1883 drvr
->fws
->drvr
= drvr
;
1884 drvr
->fws
->fcmode
= fcmode
;
1886 drvr
->fws
->fws_wq
= create_singlethread_workqueue("brcmf_fws_wq");
1887 if (drvr
->fws
->fws_wq
== NULL
) {
1888 brcmf_err("workqueue creation failed\n");
1892 INIT_WORK(&drvr
->fws
->fws_dequeue_work
, brcmf_fws_dequeue_worker
);
1894 /* enable firmware signalling if fcmode active */
1895 if (drvr
->fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
)
1896 tlv
|= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS
|
1897 BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS
|
1898 BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE
;
1900 rc
= brcmf_fil_iovar_int_set(drvr
->iflist
[0], "tlv", tlv
);
1902 brcmf_err("failed to set bdcv2 tlv signaling\n");
1906 if (brcmf_fweh_register(drvr
, BRCMF_E_FIFO_CREDIT_MAP
,
1907 brcmf_fws_notify_credit_map
)) {
1908 brcmf_err("register credit map handler failed\n");
1912 brcmf_fws_hanger_init(&drvr
->fws
->hanger
);
1913 brcmf_fws_init_mac_descriptor(&drvr
->fws
->desc
.other
, NULL
, 0);
1914 brcmu_pktq_init(&drvr
->fws
->desc
.other
.psq
, BRCMF_FWS_PSQ_PREC_COUNT
,
1917 /* create debugfs file for statistics */
1918 brcmf_debugfs_create_fws_stats(drvr
, &drvr
->fws
->stats
);
1920 /* TODO: remove upon feature delivery */
1921 brcmf_err("%s bdcv2 tlv signaling [%x]\n",
1922 drvr
->fw_signals
? "enabled" : "disabled", tlv
);
1926 /* disable flow control entirely */
1927 drvr
->fw_signals
= false;
1928 brcmf_fws_deinit(drvr
);
1932 void brcmf_fws_deinit(struct brcmf_pub
*drvr
)
1934 struct brcmf_fws_info
*fws
= drvr
->fws
;
1941 brcmf_fws_lock(drvr
, flags
);
1942 brcmf_fws_cleanup(fws
, -1);
1944 brcmf_fws_unlock(drvr
, flags
);
1946 /* free top structure */
1950 bool brcmf_fws_fc_active(struct brcmf_fws_info
*fws
)
1955 brcmf_dbg(TRACE
, "enter: mode=%d\n", fws
->fcmode
);
1956 return fws
->fcmode
!= BRCMF_FWS_FCMODE_NONE
;
1959 void brcmf_fws_bustxfail(struct brcmf_fws_info
*fws
, struct sk_buff
*skb
)
1963 brcmf_fws_lock(fws
->drvr
, flags
);
1964 brcmf_fws_txstatus_process(fws
, BRCMF_FWS_TXSTATUS_FW_TOSSED
,
1965 brcmf_skb_htod_tag_get_field(skb
, HSLOT
), 0);
1966 /* the packet never reached firmware so reclaim credit */
1967 if (fws
->fcmode
== BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
&&
1968 brcmf_skbcb(skb
)->if_flags
& BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK
) {
1969 brcmf_fws_return_credits(fws
,
1970 brcmf_skb_htod_tag_get_field(skb
,
1973 brcmf_fws_schedule_deq(fws
);
1975 brcmf_fws_unlock(fws
->drvr
, flags
);