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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 <linux/jiffies.h>
25#include <net/cfg80211.h>
26
27#include <brcmu_utils.h>
28#include <brcmu_wifi.h>
29#include "core.h"
30#include "debug.h"
31#include "bus.h"
32#include "fwil.h"
33#include "fwil_types.h"
34#include "fweh.h"
35#include "fwsignal.h"
36#include "p2p.h"
37#include "cfg80211.h"
38#include "proto.h"
39#include "bcdc.h"
40#include "common.h"
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55
56#define BRCMF_FWS_TLV_DEFLIST \
57 BRCMF_FWS_TLV_DEF(MAC_OPEN, 1, 1) \
58 BRCMF_FWS_TLV_DEF(MAC_CLOSE, 2, 1) \
59 BRCMF_FWS_TLV_DEF(MAC_REQUEST_CREDIT, 3, 2) \
60 BRCMF_FWS_TLV_DEF(TXSTATUS, 4, 4) \
61 BRCMF_FWS_TLV_DEF(PKTTAG, 5, 4) \
62 BRCMF_FWS_TLV_DEF(MACDESC_ADD, 6, 8) \
63 BRCMF_FWS_TLV_DEF(MACDESC_DEL, 7, 8) \
64 BRCMF_FWS_TLV_DEF(RSSI, 8, 1) \
65 BRCMF_FWS_TLV_DEF(INTERFACE_OPEN, 9, 1) \
66 BRCMF_FWS_TLV_DEF(INTERFACE_CLOSE, 10, 1) \
67 BRCMF_FWS_TLV_DEF(FIFO_CREDITBACK, 11, 6) \
68 BRCMF_FWS_TLV_DEF(PENDING_TRAFFIC_BMP, 12, 2) \
69 BRCMF_FWS_TLV_DEF(MAC_REQUEST_PACKET, 13, 3) \
70 BRCMF_FWS_TLV_DEF(HOST_REORDER_RXPKTS, 14, 10) \
71 BRCMF_FWS_TLV_DEF(TRANS_ID, 18, 6) \
72 BRCMF_FWS_TLV_DEF(COMP_TXSTATUS, 19, 1) \
73 BRCMF_FWS_TLV_DEF(FILLER, 255, 0)
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75
76
77
78#define BRCMF_FWS_TLV_DEF(name, id, len) \
79 BRCMF_FWS_TYPE_ ## name = id,
80enum brcmf_fws_tlv_type {
81 BRCMF_FWS_TLV_DEFLIST
82 BRCMF_FWS_TYPE_INVALID
83};
84#undef BRCMF_FWS_TLV_DEF
85
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88
89#define BRCMF_FWS_TLV_DEF(name, id, len) \
90 BRCMF_FWS_TYPE_ ## name ## _LEN = (len),
91enum brcmf_fws_tlv_len {
92 BRCMF_FWS_TLV_DEFLIST
93};
94#undef BRCMF_FWS_TLV_DEF
95
96
97#define BRCMF_RXREORDER_FLOWID_OFFSET 0
98#define BRCMF_RXREORDER_MAXIDX_OFFSET 2
99#define BRCMF_RXREORDER_FLAGS_OFFSET 4
100#define BRCMF_RXREORDER_CURIDX_OFFSET 6
101#define BRCMF_RXREORDER_EXPIDX_OFFSET 8
102
103#define BRCMF_RXREORDER_DEL_FLOW 0x01
104#define BRCMF_RXREORDER_FLUSH_ALL 0x02
105#define BRCMF_RXREORDER_CURIDX_VALID 0x04
106#define BRCMF_RXREORDER_EXPIDX_VALID 0x08
107#define BRCMF_RXREORDER_NEW_HOLE 0x10
108
109#ifdef DEBUG
110
111
112
113#define BRCMF_FWS_TLV_DEF(name, id, len) \
114 { id, #name },
115static struct {
116 enum brcmf_fws_tlv_type id;
117 const char *name;
118} brcmf_fws_tlv_names[] = {
119 BRCMF_FWS_TLV_DEFLIST
120};
121#undef BRCMF_FWS_TLV_DEF
122
123
124static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
125{
126 int i;
127
128 for (i = 0; i < ARRAY_SIZE(brcmf_fws_tlv_names); i++)
129 if (brcmf_fws_tlv_names[i].id == id)
130 return brcmf_fws_tlv_names[i].name;
131
132 return "INVALID";
133}
134#else
135static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
136{
137 return "NODEBUG";
138}
139#endif
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144
145#define BRCMF_FWS_TYPE_SEQ_LEN 2
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149
150#define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001
151#define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002
152#define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004
153#define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008
154#define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010
155#define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020
156#define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040
157
158#define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32
159#define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff
160
161#define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0
162#define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1
163#define BRCMF_FWS_FLOWCONTROL_HIWATER 128
164#define BRCMF_FWS_FLOWCONTROL_LOWATER 64
165
166#define BRCMF_FWS_PSQ_PREC_COUNT ((BRCMF_FWS_FIFO_COUNT + 1) * 2)
167#define BRCMF_FWS_PSQ_LEN 256
168
169#define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01
170#define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02
171
172#define BRCMF_FWS_RET_OK_NOSCHEDULE 0
173#define BRCMF_FWS_RET_OK_SCHEDULE 1
174
175#define BRCMF_FWS_MODE_REUSESEQ_SHIFT 3
176#define BRCMF_FWS_MODE_SET_REUSESEQ(x, val) ((x) = \
177 ((x) & ~(1 << BRCMF_FWS_MODE_REUSESEQ_SHIFT)) | \
178 (((val) & 1) << BRCMF_FWS_MODE_REUSESEQ_SHIFT))
179#define BRCMF_FWS_MODE_GET_REUSESEQ(x) \
180 (((x) >> BRCMF_FWS_MODE_REUSESEQ_SHIFT) & 1)
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189
190enum brcmf_fws_skb_state {
191 BRCMF_FWS_SKBSTATE_NEW,
192 BRCMF_FWS_SKBSTATE_DELAYED,
193 BRCMF_FWS_SKBSTATE_SUPPRESSED,
194 BRCMF_FWS_SKBSTATE_TIM
195};
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210struct brcmf_skbuff_cb {
211 u16 bus_flags;
212 u16 if_flags;
213 u32 htod;
214 u16 htod_seq;
215 enum brcmf_fws_skb_state state;
216 struct brcmf_fws_mac_descriptor *mac;
217};
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222#define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb))
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234#define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800
235#define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11
236#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400
237#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10
238#define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200
239#define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9
240#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x0100
241#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 8
242#define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080
243#define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7
244#define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f
245#define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0
246
247#define brcmf_skb_if_flags_set_field(skb, field, value) \
248 brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \
249 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
250 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value))
251#define brcmf_skb_if_flags_get_field(skb, field) \
252 brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \
253 BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
254 BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT)
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271#define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000
272#define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31
273#define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000
274#define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27
275#define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000
276#define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24
277#define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00
278#define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8
279#define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff
280#define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0
281
282#define brcmf_skb_htod_tag_set_field(skb, field, value) \
283 brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \
284 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
285 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value))
286#define brcmf_skb_htod_tag_get_field(skb, field) \
287 brcmu_maskget32(brcmf_skbcb(skb)->htod, \
288 BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
289 BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)
290
291#define BRCMF_SKB_HTOD_SEQ_FROMFW_MASK 0x2000
292#define BRCMF_SKB_HTOD_SEQ_FROMFW_SHIFT 13
293#define BRCMF_SKB_HTOD_SEQ_FROMDRV_MASK 0x1000
294#define BRCMF_SKB_HTOD_SEQ_FROMDRV_SHIFT 12
295#define BRCMF_SKB_HTOD_SEQ_NR_MASK 0x0fff
296#define BRCMF_SKB_HTOD_SEQ_NR_SHIFT 0
297
298#define brcmf_skb_htod_seq_set_field(skb, field, value) \
299 brcmu_maskset16(&(brcmf_skbcb(skb)->htod_seq), \
300 BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \
301 BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT, (value))
302#define brcmf_skb_htod_seq_get_field(skb, field) \
303 brcmu_maskget16(brcmf_skbcb(skb)->htod_seq, \
304 BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \
305 BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT)
306
307#define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000
308#define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31
309#define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000
310#define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27
311#define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000
312#define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24
313#define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00
314#define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8
315#define BRCMF_FWS_TXSTAT_FREERUN_MASK 0x000000FF
316#define BRCMF_FWS_TXSTAT_FREERUN_SHIFT 0
317
318#define brcmf_txstatus_get_field(txs, field) \
319 brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \
320 BRCMF_FWS_TXSTAT_ ## field ## _SHIFT)
321
322
323#define BRCMF_FWS_BORROW_DEFER_PERIOD (HZ / 10)
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337enum brcmf_fws_fifo {
338 BRCMF_FWS_FIFO_FIRST,
339 BRCMF_FWS_FIFO_AC_BK = BRCMF_FWS_FIFO_FIRST,
340 BRCMF_FWS_FIFO_AC_BE,
341 BRCMF_FWS_FIFO_AC_VI,
342 BRCMF_FWS_FIFO_AC_VO,
343 BRCMF_FWS_FIFO_BCMC,
344 BRCMF_FWS_FIFO_ATIM,
345 BRCMF_FWS_FIFO_COUNT
346};
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362enum brcmf_fws_txstatus {
363 BRCMF_FWS_TXSTATUS_DISCARD,
364 BRCMF_FWS_TXSTATUS_CORE_SUPPRESS,
365 BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS,
366 BRCMF_FWS_TXSTATUS_FW_TOSSED,
367 BRCMF_FWS_TXSTATUS_HOST_TOSSED
368};
369
370enum brcmf_fws_fcmode {
371 BRCMF_FWS_FCMODE_NONE,
372 BRCMF_FWS_FCMODE_IMPLIED_CREDIT,
373 BRCMF_FWS_FCMODE_EXPLICIT_CREDIT
374};
375
376enum brcmf_fws_mac_desc_state {
377 BRCMF_FWS_STATE_OPEN = 1,
378 BRCMF_FWS_STATE_CLOSE
379};
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397struct brcmf_fws_mac_descriptor {
398 char name[16];
399 u8 occupied;
400 u8 mac_handle;
401 u8 interface_id;
402 u8 state;
403 bool suppressed;
404 u8 generation;
405 u8 ac_bitmap;
406 u8 requested_credit;
407 u8 requested_packet;
408 u8 ea[ETH_ALEN];
409 u8 seq[BRCMF_FWS_FIFO_COUNT];
410 struct pktq psq;
411 int transit_count;
412 int suppr_transit_count;
413 bool send_tim_signal;
414 u8 traffic_pending_bmp;
415 u8 traffic_lastreported_bmp;
416};
417
418#define BRCMF_FWS_HANGER_MAXITEMS 1024
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427enum brcmf_fws_hanger_item_state {
428 BRCMF_FWS_HANGER_ITEM_STATE_FREE = 1,
429 BRCMF_FWS_HANGER_ITEM_STATE_INUSE,
430 BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED
431};
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440struct brcmf_fws_hanger_item {
441 enum brcmf_fws_hanger_item_state state;
442 struct sk_buff *pkt;
443};
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456struct brcmf_fws_hanger {
457 u32 pushed;
458 u32 popped;
459 u32 failed_to_push;
460 u32 failed_to_pop;
461 u32 failed_slotfind;
462 u32 slot_pos;
463 struct brcmf_fws_hanger_item items[BRCMF_FWS_HANGER_MAXITEMS];
464};
465
466struct brcmf_fws_macdesc_table {
467 struct brcmf_fws_mac_descriptor nodes[BRCMF_FWS_MAC_DESC_TABLE_SIZE];
468 struct brcmf_fws_mac_descriptor iface[BRCMF_MAX_IFS];
469 struct brcmf_fws_mac_descriptor other;
470};
471
472struct brcmf_fws_stats {
473 u32 tlv_parse_failed;
474 u32 tlv_invalid_type;
475 u32 header_only_pkt;
476 u32 header_pulls;
477 u32 pkt2bus;
478 u32 send_pkts[5];
479 u32 requested_sent[5];
480 u32 generic_error;
481 u32 mac_update_failed;
482 u32 mac_ps_update_failed;
483 u32 if_update_failed;
484 u32 packet_request_failed;
485 u32 credit_request_failed;
486 u32 rollback_success;
487 u32 rollback_failed;
488 u32 delayq_full_error;
489 u32 supprq_full_error;
490 u32 txs_indicate;
491 u32 txs_discard;
492 u32 txs_supp_core;
493 u32 txs_supp_ps;
494 u32 txs_tossed;
495 u32 txs_host_tossed;
496 u32 bus_flow_block;
497 u32 fws_flow_block;
498};
499
500struct brcmf_fws_info {
501 struct brcmf_pub *drvr;
502 spinlock_t spinlock;
503 ulong flags;
504 struct brcmf_fws_stats stats;
505 struct brcmf_fws_hanger hanger;
506 enum brcmf_fws_fcmode fcmode;
507 bool fw_signals;
508 bool bcmc_credit_check;
509 struct brcmf_fws_macdesc_table desc;
510 struct workqueue_struct *fws_wq;
511 struct work_struct fws_dequeue_work;
512 u32 fifo_enqpkt[BRCMF_FWS_FIFO_COUNT];
513 int fifo_credit[BRCMF_FWS_FIFO_COUNT];
514 int credits_borrowed[BRCMF_FWS_FIFO_AC_VO + 1];
515 int deq_node_pos[BRCMF_FWS_FIFO_COUNT];
516 u32 fifo_credit_map;
517 u32 fifo_delay_map;
518 unsigned long borrow_defer_timestamp;
519 bool bus_flow_blocked;
520 bool creditmap_received;
521 u8 mode;
522 bool avoid_queueing;
523};
524
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527
528static const int brcmf_fws_prio2fifo[] = {
529 BRCMF_FWS_FIFO_AC_BE,
530 BRCMF_FWS_FIFO_AC_BK,
531 BRCMF_FWS_FIFO_AC_BK,
532 BRCMF_FWS_FIFO_AC_BE,
533 BRCMF_FWS_FIFO_AC_VI,
534 BRCMF_FWS_FIFO_AC_VI,
535 BRCMF_FWS_FIFO_AC_VO,
536 BRCMF_FWS_FIFO_AC_VO
537};
538
539#define BRCMF_FWS_TLV_DEF(name, id, len) \
540 case BRCMF_FWS_TYPE_ ## name: \
541 return len;
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551static int brcmf_fws_get_tlv_len(struct brcmf_fws_info *fws,
552 enum brcmf_fws_tlv_type id)
553{
554 switch (id) {
555 BRCMF_FWS_TLV_DEFLIST
556 default:
557 fws->stats.tlv_invalid_type++;
558 break;
559 }
560 return -EINVAL;
561}
562#undef BRCMF_FWS_TLV_DEF
563
564static void brcmf_fws_lock(struct brcmf_fws_info *fws)
565 __acquires(&fws->spinlock)
566{
567 spin_lock_irqsave(&fws->spinlock, fws->flags);
568}
569
570static void brcmf_fws_unlock(struct brcmf_fws_info *fws)
571 __releases(&fws->spinlock)
572{
573 spin_unlock_irqrestore(&fws->spinlock, fws->flags);
574}
575
576static bool brcmf_fws_ifidx_match(struct sk_buff *skb, void *arg)
577{
578 u32 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX);
579 return ifidx == *(int *)arg;
580}
581
582static void brcmf_fws_psq_flush(struct brcmf_fws_info *fws, struct pktq *q,
583 int ifidx)
584{
585 bool (*matchfn)(struct sk_buff *, void *) = NULL;
586 struct sk_buff *skb;
587 int prec;
588
589 if (ifidx != -1)
590 matchfn = brcmf_fws_ifidx_match;
591 for (prec = 0; prec < q->num_prec; prec++) {
592 skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
593 while (skb) {
594 brcmu_pkt_buf_free_skb(skb);
595 skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx);
596 }
597 }
598}
599
600static void brcmf_fws_hanger_init(struct brcmf_fws_hanger *hanger)
601{
602 int i;
603
604 memset(hanger, 0, sizeof(*hanger));
605 for (i = 0; i < ARRAY_SIZE(hanger->items); i++)
606 hanger->items[i].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
607}
608
609static u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h)
610{
611 u32 i;
612
613 i = (h->slot_pos + 1) % BRCMF_FWS_HANGER_MAXITEMS;
614
615 while (i != h->slot_pos) {
616 if (h->items[i].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
617 h->slot_pos = i;
618 goto done;
619 }
620 i++;
621 if (i == BRCMF_FWS_HANGER_MAXITEMS)
622 i = 0;
623 }
624 brcmf_err("all slots occupied\n");
625 h->failed_slotfind++;
626 i = BRCMF_FWS_HANGER_MAXITEMS;
627done:
628 return i;
629}
630
631static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h,
632 struct sk_buff *pkt, u32 slot_id)
633{
634 if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
635 return -ENOENT;
636
637 if (h->items[slot_id].state != BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
638 brcmf_err("slot is not free\n");
639 h->failed_to_push++;
640 return -EINVAL;
641 }
642
643 h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE;
644 h->items[slot_id].pkt = pkt;
645 h->pushed++;
646 return 0;
647}
648
649static inline int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
650 u32 slot_id, struct sk_buff **pktout,
651 bool remove_item)
652{
653 if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
654 return -ENOENT;
655
656 if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
657 brcmf_err("entry not in use\n");
658 h->failed_to_pop++;
659 return -EINVAL;
660 }
661
662 *pktout = h->items[slot_id].pkt;
663 if (remove_item) {
664 h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
665 h->items[slot_id].pkt = NULL;
666 h->popped++;
667 }
668 return 0;
669}
670
671static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h,
672 u32 slot_id)
673{
674 if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
675 return -ENOENT;
676
677 if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
678 brcmf_err("entry not in use\n");
679 return -EINVAL;
680 }
681
682 h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED;
683 return 0;
684}
685
686static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info *fws,
687 bool (*fn)(struct sk_buff *, void *),
688 int ifidx)
689{
690 struct brcmf_fws_hanger *h = &fws->hanger;
691 struct sk_buff *skb;
692 int i;
693 enum brcmf_fws_hanger_item_state s;
694
695 for (i = 0; i < ARRAY_SIZE(h->items); i++) {
696 s = h->items[i].state;
697 if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE ||
698 s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED) {
699 skb = h->items[i].pkt;
700 if (fn == NULL || fn(skb, &ifidx)) {
701
702 if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE)
703 brcmu_pkt_buf_free_skb(skb);
704 h->items[i].state =
705 BRCMF_FWS_HANGER_ITEM_STATE_FREE;
706 }
707 }
708 }
709}
710
711static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info *fws,
712 struct brcmf_fws_mac_descriptor *desc)
713{
714 if (desc == &fws->desc.other)
715 strlcpy(desc->name, "MAC-OTHER", sizeof(desc->name));
716 else if (desc->mac_handle)
717 scnprintf(desc->name, sizeof(desc->name), "MAC-%d:%d",
718 desc->mac_handle, desc->interface_id);
719 else
720 scnprintf(desc->name, sizeof(desc->name), "MACIF:%d",
721 desc->interface_id);
722}
723
724static void brcmf_fws_macdesc_init(struct brcmf_fws_mac_descriptor *desc,
725 u8 *addr, u8 ifidx)
726{
727 brcmf_dbg(TRACE,
728 "enter: desc %p ea=%pM, ifidx=%u\n", desc, addr, ifidx);
729 desc->occupied = 1;
730 desc->state = BRCMF_FWS_STATE_OPEN;
731 desc->requested_credit = 0;
732 desc->requested_packet = 0;
733
734 desc->interface_id = ifidx;
735 desc->ac_bitmap = 0xff;
736 if (addr)
737 memcpy(&desc->ea[0], addr, ETH_ALEN);
738}
739
740static
741void brcmf_fws_macdesc_deinit(struct brcmf_fws_mac_descriptor *desc)
742{
743 brcmf_dbg(TRACE,
744 "enter: ea=%pM, ifidx=%u\n", desc->ea, desc->interface_id);
745 desc->occupied = 0;
746 desc->state = BRCMF_FWS_STATE_CLOSE;
747 desc->requested_credit = 0;
748 desc->requested_packet = 0;
749}
750
751static struct brcmf_fws_mac_descriptor *
752brcmf_fws_macdesc_lookup(struct brcmf_fws_info *fws, u8 *ea)
753{
754 struct brcmf_fws_mac_descriptor *entry;
755 int i;
756
757 if (ea == NULL)
758 return ERR_PTR(-EINVAL);
759
760 entry = &fws->desc.nodes[0];
761 for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++) {
762 if (entry->occupied && !memcmp(entry->ea, ea, ETH_ALEN))
763 return entry;
764 entry++;
765 }
766
767 return ERR_PTR(-ENOENT);
768}
769
770static struct brcmf_fws_mac_descriptor*
771brcmf_fws_macdesc_find(struct brcmf_fws_info *fws, struct brcmf_if *ifp, u8 *da)
772{
773 struct brcmf_fws_mac_descriptor *entry = &fws->desc.other;
774 bool multicast;
775
776 multicast = is_multicast_ether_addr(da);
777
778
779
780
781
782 if (multicast && ifp->fws_desc) {
783 entry = ifp->fws_desc;
784 goto done;
785 }
786
787 entry = brcmf_fws_macdesc_lookup(fws, da);
788 if (IS_ERR(entry))
789 entry = ifp->fws_desc;
790
791done:
792 return entry;
793}
794
795static bool brcmf_fws_macdesc_closed(struct brcmf_fws_info *fws,
796 struct brcmf_fws_mac_descriptor *entry,
797 int fifo)
798{
799 struct brcmf_fws_mac_descriptor *if_entry;
800 bool closed;
801
802
803
804
805 if (entry->mac_handle) {
806 if_entry = &fws->desc.iface[entry->interface_id];
807 if (if_entry->state == BRCMF_FWS_STATE_CLOSE)
808 return true;
809 }
810
811
812
813 closed = entry->state == BRCMF_FWS_STATE_CLOSE &&
814 !entry->requested_credit && !entry->requested_packet;
815
816
817 return closed || !(entry->ac_bitmap & BIT(fifo));
818}
819
820static void brcmf_fws_macdesc_cleanup(struct brcmf_fws_info *fws,
821 struct brcmf_fws_mac_descriptor *entry,
822 int ifidx)
823{
824 if (entry->occupied && (ifidx == -1 || ifidx == entry->interface_id)) {
825 brcmf_fws_psq_flush(fws, &entry->psq, ifidx);
826 entry->occupied = !!(entry->psq.len);
827 }
828}
829
830static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info *fws,
831 bool (*fn)(struct sk_buff *, void *),
832 int ifidx)
833{
834 struct brcmf_fws_hanger_item *hi;
835 struct pktq *txq;
836 struct sk_buff *skb;
837 int prec;
838 u32 hslot;
839
840 txq = brcmf_bus_gettxq(fws->drvr->bus_if);
841 if (IS_ERR(txq)) {
842 brcmf_dbg(TRACE, "no txq to clean up\n");
843 return;
844 }
845
846 for (prec = 0; prec < txq->num_prec; prec++) {
847 skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx);
848 while (skb) {
849 hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
850 hi = &fws->hanger.items[hslot];
851 WARN_ON(skb != hi->pkt);
852 hi->state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
853 brcmu_pkt_buf_free_skb(skb);
854 skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx);
855 }
856 }
857}
858
859static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx)
860{
861 int i;
862 struct brcmf_fws_mac_descriptor *table;
863 bool (*matchfn)(struct sk_buff *, void *) = NULL;
864
865 if (fws == NULL)
866 return;
867
868 if (ifidx != -1)
869 matchfn = brcmf_fws_ifidx_match;
870
871
872 table = &fws->desc.nodes[0];
873 for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++)
874 brcmf_fws_macdesc_cleanup(fws, &table[i], ifidx);
875
876 brcmf_fws_macdesc_cleanup(fws, &fws->desc.other, ifidx);
877 brcmf_fws_bus_txq_cleanup(fws, matchfn, ifidx);
878 brcmf_fws_hanger_cleanup(fws, matchfn, ifidx);
879}
880
881static u8 brcmf_fws_hdrpush(struct brcmf_fws_info *fws, struct sk_buff *skb)
882{
883 struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
884 u8 *wlh;
885 u16 data_offset = 0;
886 u8 fillers;
887 __le32 pkttag = cpu_to_le32(brcmf_skbcb(skb)->htod);
888 __le16 pktseq = cpu_to_le16(brcmf_skbcb(skb)->htod_seq);
889
890 brcmf_dbg(TRACE, "enter: %s, idx=%d hslot=%d htod %X seq %X\n",
891 entry->name, brcmf_skb_if_flags_get_field(skb, INDEX),
892 (le32_to_cpu(pkttag) >> 8) & 0xffff,
893 brcmf_skbcb(skb)->htod, brcmf_skbcb(skb)->htod_seq);
894 if (entry->send_tim_signal)
895 data_offset += 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN;
896 if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode))
897 data_offset += BRCMF_FWS_TYPE_SEQ_LEN;
898
899 data_offset += 2 + BRCMF_FWS_TYPE_PKTTAG_LEN;
900 fillers = round_up(data_offset, 4) - data_offset;
901 data_offset += fillers;
902
903 skb_push(skb, data_offset);
904 wlh = skb->data;
905
906 wlh[0] = BRCMF_FWS_TYPE_PKTTAG;
907 wlh[1] = BRCMF_FWS_TYPE_PKTTAG_LEN;
908 memcpy(&wlh[2], &pkttag, sizeof(pkttag));
909 if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) {
910 wlh[1] += BRCMF_FWS_TYPE_SEQ_LEN;
911 memcpy(&wlh[2 + BRCMF_FWS_TYPE_PKTTAG_LEN], &pktseq,
912 sizeof(pktseq));
913 }
914 wlh += wlh[1] + 2;
915
916 if (entry->send_tim_signal) {
917 entry->send_tim_signal = 0;
918 wlh[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP;
919 wlh[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN;
920 wlh[2] = entry->mac_handle;
921 wlh[3] = entry->traffic_pending_bmp;
922 brcmf_dbg(TRACE, "adding TIM info: handle %d bmp 0x%X\n",
923 entry->mac_handle, entry->traffic_pending_bmp);
924 wlh += BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2;
925 entry->traffic_lastreported_bmp = entry->traffic_pending_bmp;
926 }
927 if (fillers)
928 memset(wlh, BRCMF_FWS_TYPE_FILLER, fillers);
929
930 return (u8)(data_offset >> 2);
931}
932
933static bool brcmf_fws_tim_update(struct brcmf_fws_info *fws,
934 struct brcmf_fws_mac_descriptor *entry,
935 int fifo, bool send_immediately)
936{
937 struct sk_buff *skb;
938 struct brcmf_skbuff_cb *skcb;
939 s32 err;
940 u32 len;
941 u8 data_offset;
942 int ifidx;
943
944
945 if (brcmu_pktq_mlen(&entry->psq, 3 << (fifo * 2)) == 0)
946 entry->traffic_pending_bmp &= ~NBITVAL(fifo);
947 else
948 entry->traffic_pending_bmp |= NBITVAL(fifo);
949
950 entry->send_tim_signal = false;
951 if (entry->traffic_lastreported_bmp != entry->traffic_pending_bmp)
952 entry->send_tim_signal = true;
953 if (send_immediately && entry->send_tim_signal &&
954 entry->state == BRCMF_FWS_STATE_CLOSE) {
955
956
957 len = BRCMF_FWS_TYPE_PKTTAG_LEN + 2 +
958 BRCMF_FWS_TYPE_SEQ_LEN +
959 BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2 +
960 4 + fws->drvr->hdrlen;
961 skb = brcmu_pkt_buf_get_skb(len);
962 if (skb == NULL)
963 return false;
964 skb_pull(skb, len);
965 skcb = brcmf_skbcb(skb);
966 skcb->mac = entry;
967 skcb->state = BRCMF_FWS_SKBSTATE_TIM;
968 skcb->htod = 0;
969 skcb->htod_seq = 0;
970 data_offset = brcmf_fws_hdrpush(fws, skb);
971 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX);
972 brcmf_fws_unlock(fws);
973 err = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb);
974 brcmf_fws_lock(fws);
975 if (err)
976 brcmu_pkt_buf_free_skb(skb);
977 return true;
978 }
979 return false;
980}
981
982static void
983brcmf_fws_flow_control_check(struct brcmf_fws_info *fws, struct pktq *pq,
984 u8 if_id)
985{
986 struct brcmf_if *ifp = brcmf_get_ifp(fws->drvr, if_id);
987
988 if (WARN_ON(!ifp))
989 return;
990
991 if ((ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) &&
992 pq->len <= BRCMF_FWS_FLOWCONTROL_LOWATER)
993 brcmf_txflowblock_if(ifp,
994 BRCMF_NETIF_STOP_REASON_FWS_FC, false);
995 if (!(ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) &&
996 pq->len >= BRCMF_FWS_FLOWCONTROL_HIWATER) {
997 fws->stats.fws_flow_block++;
998 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FWS_FC, true);
999 }
1000 return;
1001}
1002
1003static int brcmf_fws_rssi_indicate(struct brcmf_fws_info *fws, s8 rssi)
1004{
1005 brcmf_dbg(CTL, "rssi %d\n", rssi);
1006 return 0;
1007}
1008
1009static
1010int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data)
1011{
1012 struct brcmf_fws_mac_descriptor *entry, *existing;
1013 u8 mac_handle;
1014 u8 ifidx;
1015 u8 *addr;
1016
1017 mac_handle = *data++;
1018 ifidx = *data++;
1019 addr = data;
1020
1021 entry = &fws->desc.nodes[mac_handle & 0x1F];
1022 if (type == BRCMF_FWS_TYPE_MACDESC_DEL) {
1023 if (entry->occupied) {
1024 brcmf_dbg(TRACE, "deleting %s mac %pM\n",
1025 entry->name, addr);
1026 brcmf_fws_lock(fws);
1027 brcmf_fws_macdesc_cleanup(fws, entry, -1);
1028 brcmf_fws_macdesc_deinit(entry);
1029 brcmf_fws_unlock(fws);
1030 } else
1031 fws->stats.mac_update_failed++;
1032 return 0;
1033 }
1034
1035 existing = brcmf_fws_macdesc_lookup(fws, addr);
1036 if (IS_ERR(existing)) {
1037 if (!entry->occupied) {
1038 brcmf_fws_lock(fws);
1039 entry->mac_handle = mac_handle;
1040 brcmf_fws_macdesc_init(entry, addr, ifidx);
1041 brcmf_fws_macdesc_set_name(fws, entry);
1042 brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT,
1043 BRCMF_FWS_PSQ_LEN);
1044 brcmf_fws_unlock(fws);
1045 brcmf_dbg(TRACE, "add %s mac %pM\n", entry->name, addr);
1046 } else {
1047 fws->stats.mac_update_failed++;
1048 }
1049 } else {
1050 if (entry != existing) {
1051 brcmf_dbg(TRACE, "copy mac %s\n", existing->name);
1052 brcmf_fws_lock(fws);
1053 memcpy(entry, existing,
1054 offsetof(struct brcmf_fws_mac_descriptor, psq));
1055 entry->mac_handle = mac_handle;
1056 brcmf_fws_macdesc_deinit(existing);
1057 brcmf_fws_macdesc_set_name(fws, entry);
1058 brcmf_fws_unlock(fws);
1059 brcmf_dbg(TRACE, "relocate %s mac %pM\n", entry->name,
1060 addr);
1061 } else {
1062 brcmf_dbg(TRACE, "use existing\n");
1063 WARN_ON(entry->mac_handle != mac_handle);
1064
1065 }
1066 }
1067 return 0;
1068}
1069
1070static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info *fws,
1071 u8 type, u8 *data)
1072{
1073 struct brcmf_fws_mac_descriptor *entry;
1074 u8 mac_handle;
1075 int ret;
1076
1077 mac_handle = data[0];
1078 entry = &fws->desc.nodes[mac_handle & 0x1F];
1079 if (!entry->occupied) {
1080 fws->stats.mac_ps_update_failed++;
1081 return -ESRCH;
1082 }
1083 brcmf_fws_lock(fws);
1084
1085 entry->requested_credit = 0;
1086 entry->requested_packet = 0;
1087 if (type == BRCMF_FWS_TYPE_MAC_OPEN) {
1088 entry->state = BRCMF_FWS_STATE_OPEN;
1089 ret = BRCMF_FWS_RET_OK_SCHEDULE;
1090 } else {
1091 entry->state = BRCMF_FWS_STATE_CLOSE;
1092 brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BK, false);
1093 brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BE, false);
1094 brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VI, false);
1095 brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VO, true);
1096 ret = BRCMF_FWS_RET_OK_NOSCHEDULE;
1097 }
1098 brcmf_fws_unlock(fws);
1099 return ret;
1100}
1101
1102static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info *fws,
1103 u8 type, u8 *data)
1104{
1105 struct brcmf_fws_mac_descriptor *entry;
1106 u8 ifidx;
1107 int ret;
1108
1109 ifidx = data[0];
1110
1111 if (ifidx >= BRCMF_MAX_IFS) {
1112 ret = -ERANGE;
1113 goto fail;
1114 }
1115
1116 entry = &fws->desc.iface[ifidx];
1117 if (!entry->occupied) {
1118 ret = -ESRCH;
1119 goto fail;
1120 }
1121
1122 brcmf_dbg(TRACE, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type), type,
1123 entry->name);
1124 brcmf_fws_lock(fws);
1125 switch (type) {
1126 case BRCMF_FWS_TYPE_INTERFACE_OPEN:
1127 entry->state = BRCMF_FWS_STATE_OPEN;
1128 ret = BRCMF_FWS_RET_OK_SCHEDULE;
1129 break;
1130 case BRCMF_FWS_TYPE_INTERFACE_CLOSE:
1131 entry->state = BRCMF_FWS_STATE_CLOSE;
1132 ret = BRCMF_FWS_RET_OK_NOSCHEDULE;
1133 break;
1134 default:
1135 ret = -EINVAL;
1136 brcmf_fws_unlock(fws);
1137 goto fail;
1138 }
1139 brcmf_fws_unlock(fws);
1140 return ret;
1141
1142fail:
1143 fws->stats.if_update_failed++;
1144 return ret;
1145}
1146
1147static int brcmf_fws_request_indicate(struct brcmf_fws_info *fws, u8 type,
1148 u8 *data)
1149{
1150 struct brcmf_fws_mac_descriptor *entry;
1151
1152 entry = &fws->desc.nodes[data[1] & 0x1F];
1153 if (!entry->occupied) {
1154 if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT)
1155 fws->stats.credit_request_failed++;
1156 else
1157 fws->stats.packet_request_failed++;
1158 return -ESRCH;
1159 }
1160
1161 brcmf_dbg(TRACE, "%s (%d): %s cnt %d bmp %d\n",
1162 brcmf_fws_get_tlv_name(type), type, entry->name,
1163 data[0], data[2]);
1164 brcmf_fws_lock(fws);
1165 if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT)
1166 entry->requested_credit = data[0];
1167 else
1168 entry->requested_packet = data[0];
1169
1170 entry->ac_bitmap = data[2];
1171 brcmf_fws_unlock(fws);
1172 return BRCMF_FWS_RET_OK_SCHEDULE;
1173}
1174
1175static void
1176brcmf_fws_macdesc_use_req_credit(struct brcmf_fws_mac_descriptor *entry,
1177 struct sk_buff *skb)
1178{
1179 if (entry->requested_credit > 0) {
1180 entry->requested_credit--;
1181 brcmf_skb_if_flags_set_field(skb, REQUESTED, 1);
1182 brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 1);
1183 if (entry->state != BRCMF_FWS_STATE_CLOSE)
1184 brcmf_err("requested credit set while mac not closed!\n");
1185 } else if (entry->requested_packet > 0) {
1186 entry->requested_packet--;
1187 brcmf_skb_if_flags_set_field(skb, REQUESTED, 1);
1188 brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0);
1189 if (entry->state != BRCMF_FWS_STATE_CLOSE)
1190 brcmf_err("requested packet set while mac not closed!\n");
1191 } else {
1192 brcmf_skb_if_flags_set_field(skb, REQUESTED, 0);
1193 brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0);
1194 }
1195}
1196
1197static void brcmf_fws_macdesc_return_req_credit(struct sk_buff *skb)
1198{
1199 struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
1200
1201 if ((brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) &&
1202 (entry->state == BRCMF_FWS_STATE_CLOSE))
1203 entry->requested_credit++;
1204}
1205
1206static void brcmf_fws_return_credits(struct brcmf_fws_info *fws,
1207 u8 fifo, u8 credits)
1208{
1209 int lender_ac;
1210 int *borrowed;
1211 int *fifo_credit;
1212
1213 if (!credits)
1214 return;
1215
1216 fws->fifo_credit_map |= 1 << fifo;
1217
1218 if ((fifo == BRCMF_FWS_FIFO_AC_BE) &&
1219 (fws->credits_borrowed[0])) {
1220 for (lender_ac = BRCMF_FWS_FIFO_AC_VO; lender_ac >= 0;
1221 lender_ac--) {
1222 borrowed = &fws->credits_borrowed[lender_ac];
1223 if (*borrowed) {
1224 fws->fifo_credit_map |= (1 << lender_ac);
1225 fifo_credit = &fws->fifo_credit[lender_ac];
1226 if (*borrowed >= credits) {
1227 *borrowed -= credits;
1228 *fifo_credit += credits;
1229 return;
1230 } else {
1231 credits -= *borrowed;
1232 *fifo_credit += *borrowed;
1233 *borrowed = 0;
1234 }
1235 }
1236 }
1237 }
1238
1239 fws->fifo_credit[fifo] += credits;
1240}
1241
1242static void brcmf_fws_schedule_deq(struct brcmf_fws_info *fws)
1243{
1244
1245 if ((fws->fifo_credit_map & fws->fifo_delay_map) ||
1246 (!brcmf_fws_fc_active(fws) && fws->fifo_delay_map))
1247 queue_work(fws->fws_wq, &fws->fws_dequeue_work);
1248}
1249
1250static int brcmf_fws_enq(struct brcmf_fws_info *fws,
1251 enum brcmf_fws_skb_state state, int fifo,
1252 struct sk_buff *p)
1253{
1254 int prec = 2 * fifo;
1255 u32 *qfull_stat = &fws->stats.delayq_full_error;
1256 struct brcmf_fws_mac_descriptor *entry;
1257 struct pktq *pq;
1258 struct sk_buff_head *queue;
1259 struct sk_buff *p_head;
1260 struct sk_buff *p_tail;
1261 u32 fr_new;
1262 u32 fr_compare;
1263
1264 entry = brcmf_skbcb(p)->mac;
1265 if (entry == NULL) {
1266 brcmf_err("no mac descriptor found for skb %p\n", p);
1267 return -ENOENT;
1268 }
1269
1270 brcmf_dbg(DATA, "enter: fifo %d skb %p\n", fifo, p);
1271 if (state == BRCMF_FWS_SKBSTATE_SUPPRESSED) {
1272 prec += 1;
1273 qfull_stat = &fws->stats.supprq_full_error;
1274
1275
1276
1277 pq = &entry->psq;
1278 if (pktq_full(pq) || pktq_pfull(pq, prec)) {
1279 *qfull_stat += 1;
1280 return -ENFILE;
1281 }
1282 queue = &pq->q[prec].skblist;
1283
1284 p_head = skb_peek(queue);
1285 p_tail = skb_peek_tail(queue);
1286 fr_new = brcmf_skb_htod_tag_get_field(p, FREERUN);
1287
1288 while (p_head != p_tail) {
1289 fr_compare = brcmf_skb_htod_tag_get_field(p_tail,
1290 FREERUN);
1291
1292 if (((fr_new > fr_compare) &&
1293 ((fr_new - fr_compare) < 128)) ||
1294 ((fr_new < fr_compare) &&
1295 ((fr_compare - fr_new) > 128)))
1296 break;
1297 p_tail = skb_queue_prev(queue, p_tail);
1298 }
1299
1300 if (p_tail == NULL) {
1301
1302 __skb_queue_tail(queue, p);
1303 } else {
1304 fr_compare = brcmf_skb_htod_tag_get_field(p_tail,
1305 FREERUN);
1306 if (((fr_new > fr_compare) &&
1307 ((fr_new - fr_compare) < 128)) ||
1308 ((fr_new < fr_compare) &&
1309 ((fr_compare - fr_new) > 128))) {
1310
1311 __skb_queue_after(queue, p_tail, p);
1312 } else {
1313
1314 __skb_insert(p, p_tail->prev, p_tail, queue);
1315 }
1316 }
1317
1318
1319 pq->len++;
1320 if (pq->hi_prec < prec)
1321 pq->hi_prec = (u8) prec;
1322 } else if (brcmu_pktq_penq(&entry->psq, prec, p) == NULL) {
1323 *qfull_stat += 1;
1324 return -ENFILE;
1325 }
1326
1327
1328 fws->fifo_delay_map |= 1 << fifo;
1329 fws->fifo_enqpkt[fifo]++;
1330
1331
1332 brcmf_skbcb(p)->state = state;
1333
1334
1335
1336
1337
1338 brcmf_fws_tim_update(fws, entry, fifo, true);
1339 brcmf_fws_flow_control_check(fws, &entry->psq,
1340 brcmf_skb_if_flags_get_field(p, INDEX));
1341 return 0;
1342}
1343
1344static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo)
1345{
1346 struct brcmf_fws_mac_descriptor *table;
1347 struct brcmf_fws_mac_descriptor *entry;
1348 struct sk_buff *p;
1349 int num_nodes;
1350 int node_pos;
1351 int prec_out;
1352 int pmsk;
1353 int i;
1354
1355 table = (struct brcmf_fws_mac_descriptor *)&fws->desc;
1356 num_nodes = sizeof(fws->desc) / sizeof(struct brcmf_fws_mac_descriptor);
1357 node_pos = fws->deq_node_pos[fifo];
1358
1359 for (i = 0; i < num_nodes; i++) {
1360 entry = &table[(node_pos + i) % num_nodes];
1361 if (!entry->occupied ||
1362 brcmf_fws_macdesc_closed(fws, entry, fifo))
1363 continue;
1364
1365 if (entry->suppressed)
1366 pmsk = 2;
1367 else
1368 pmsk = 3;
1369 p = brcmu_pktq_mdeq(&entry->psq, pmsk << (fifo * 2), &prec_out);
1370 if (p == NULL) {
1371 if (entry->suppressed) {
1372 if (entry->suppr_transit_count)
1373 continue;
1374 entry->suppressed = false;
1375 p = brcmu_pktq_mdeq(&entry->psq,
1376 1 << (fifo * 2), &prec_out);
1377 }
1378 }
1379 if (p == NULL)
1380 continue;
1381
1382 brcmf_fws_macdesc_use_req_credit(entry, p);
1383
1384
1385 fws->deq_node_pos[fifo] = (node_pos + i + 1) % num_nodes;
1386 brcmf_fws_flow_control_check(fws, &entry->psq,
1387 brcmf_skb_if_flags_get_field(p,
1388 INDEX)
1389 );
1390
1391
1392
1393
1394 brcmf_fws_tim_update(fws, entry, fifo, false);
1395
1396
1397
1398
1399
1400 fws->fifo_enqpkt[fifo]--;
1401 if (fws->fifo_enqpkt[fifo] == 0)
1402 fws->fifo_delay_map &= ~(1 << fifo);
1403 goto done;
1404 }
1405 p = NULL;
1406done:
1407 brcmf_dbg(DATA, "exit: fifo %d skb %p\n", fifo, p);
1408 return p;
1409}
1410
1411static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info *fws, int fifo,
1412 struct sk_buff *skb,
1413 u32 genbit, u16 seq)
1414{
1415 struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
1416 u32 hslot;
1417 int ret;
1418
1419 hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
1420
1421
1422 if (!entry->suppressed) {
1423 entry->suppressed = true;
1424 entry->suppr_transit_count = entry->transit_count;
1425 brcmf_dbg(DATA, "suppress %s: transit %d\n",
1426 entry->name, entry->transit_count);
1427 }
1428
1429 entry->generation = genbit;
1430
1431 brcmf_skb_htod_tag_set_field(skb, GENERATION, genbit);
1432 brcmf_skbcb(skb)->htod_seq = seq;
1433 if (brcmf_skb_htod_seq_get_field(skb, FROMFW)) {
1434 brcmf_skb_htod_seq_set_field(skb, FROMDRV, 1);
1435 brcmf_skb_htod_seq_set_field(skb, FROMFW, 0);
1436 } else {
1437 brcmf_skb_htod_seq_set_field(skb, FROMDRV, 0);
1438 }
1439 ret = brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_SUPPRESSED, fifo, skb);
1440
1441 if (ret != 0) {
1442
1443 brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, true);
1444 } else {
1445
1446 brcmf_fws_hanger_mark_suppressed(&fws->hanger, hslot);
1447 }
1448
1449 return ret;
1450}
1451
1452static int
1453brcmf_fws_txs_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot,
1454 u32 genbit, u16 seq)
1455{
1456 u32 fifo;
1457 int ret;
1458 bool remove_from_hanger = true;
1459 struct sk_buff *skb;
1460 struct brcmf_skbuff_cb *skcb;
1461 struct brcmf_fws_mac_descriptor *entry = NULL;
1462 struct brcmf_if *ifp;
1463
1464 brcmf_dbg(DATA, "flags %d\n", flags);
1465
1466 if (flags == BRCMF_FWS_TXSTATUS_DISCARD)
1467 fws->stats.txs_discard++;
1468 else if (flags == BRCMF_FWS_TXSTATUS_CORE_SUPPRESS) {
1469 fws->stats.txs_supp_core++;
1470 remove_from_hanger = false;
1471 } else if (flags == BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS) {
1472 fws->stats.txs_supp_ps++;
1473 remove_from_hanger = false;
1474 } else if (flags == BRCMF_FWS_TXSTATUS_FW_TOSSED)
1475 fws->stats.txs_tossed++;
1476 else if (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED)
1477 fws->stats.txs_host_tossed++;
1478 else
1479 brcmf_err("unexpected txstatus\n");
1480
1481 ret = brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb,
1482 remove_from_hanger);
1483 if (ret != 0) {
1484 brcmf_err("no packet in hanger slot: hslot=%d\n", hslot);
1485 return ret;
1486 }
1487
1488 skcb = brcmf_skbcb(skb);
1489 entry = skcb->mac;
1490 if (WARN_ON(!entry)) {
1491 brcmu_pkt_buf_free_skb(skb);
1492 return -EINVAL;
1493 }
1494 entry->transit_count--;
1495 if (entry->suppressed && entry->suppr_transit_count)
1496 entry->suppr_transit_count--;
1497
1498 brcmf_dbg(DATA, "%s flags %d htod %X seq %X\n", entry->name, flags,
1499 skcb->htod, seq);
1500
1501
1502 fifo = brcmf_skb_htod_tag_get_field(skb, FIFO);
1503 if ((fws->fcmode == BRCMF_FWS_FCMODE_IMPLIED_CREDIT) ||
1504 (brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) ||
1505 (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED)) {
1506 brcmf_fws_return_credits(fws, fifo, 1);
1507 brcmf_fws_schedule_deq(fws);
1508 }
1509 brcmf_fws_macdesc_return_req_credit(skb);
1510
1511 ret = brcmf_proto_hdrpull(fws->drvr, false, skb, &ifp);
1512 if (ret) {
1513 brcmu_pkt_buf_free_skb(skb);
1514 return -EINVAL;
1515 }
1516 if (!remove_from_hanger)
1517 ret = brcmf_fws_txstatus_suppressed(fws, fifo, skb,
1518 genbit, seq);
1519 if (remove_from_hanger || ret)
1520 brcmf_txfinalize(ifp, skb, true);
1521
1522 return 0;
1523}
1524
1525static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info *fws,
1526 u8 *data)
1527{
1528 int i;
1529
1530 if (fws->fcmode != BRCMF_FWS_FCMODE_EXPLICIT_CREDIT) {
1531 brcmf_dbg(INFO, "ignored\n");
1532 return BRCMF_FWS_RET_OK_NOSCHEDULE;
1533 }
1534
1535 brcmf_dbg(DATA, "enter: data %pM\n", data);
1536 brcmf_fws_lock(fws);
1537 for (i = 0; i < BRCMF_FWS_FIFO_COUNT; i++)
1538 brcmf_fws_return_credits(fws, i, data[i]);
1539
1540 brcmf_dbg(DATA, "map: credit %x delay %x\n", fws->fifo_credit_map,
1541 fws->fifo_delay_map);
1542 brcmf_fws_unlock(fws);
1543 return BRCMF_FWS_RET_OK_SCHEDULE;
1544}
1545
1546static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info *fws, u8 *data)
1547{
1548 __le32 status_le;
1549 __le16 seq_le;
1550 u32 status;
1551 u32 hslot;
1552 u32 genbit;
1553 u8 flags;
1554 u16 seq;
1555
1556 fws->stats.txs_indicate++;
1557 memcpy(&status_le, data, sizeof(status_le));
1558 status = le32_to_cpu(status_le);
1559 flags = brcmf_txstatus_get_field(status, FLAGS);
1560 hslot = brcmf_txstatus_get_field(status, HSLOT);
1561 genbit = brcmf_txstatus_get_field(status, GENERATION);
1562 if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) {
1563 memcpy(&seq_le, &data[BRCMF_FWS_TYPE_PKTTAG_LEN],
1564 sizeof(seq_le));
1565 seq = le16_to_cpu(seq_le);
1566 } else {
1567 seq = 0;
1568 }
1569
1570 brcmf_fws_lock(fws);
1571 brcmf_fws_txs_process(fws, flags, hslot, genbit, seq);
1572 brcmf_fws_unlock(fws);
1573 return BRCMF_FWS_RET_OK_NOSCHEDULE;
1574}
1575
1576static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info *fws, u8 *data)
1577{
1578 __le32 timestamp;
1579
1580 memcpy(×tamp, &data[2], sizeof(timestamp));
1581 brcmf_dbg(CTL, "received: seq %d, timestamp %d\n", data[1],
1582 le32_to_cpu(timestamp));
1583 return 0;
1584}
1585
1586static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp,
1587 const struct brcmf_event_msg *e,
1588 void *data)
1589{
1590 struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
1591 int i;
1592 u8 *credits = data;
1593
1594 if (e->datalen < BRCMF_FWS_FIFO_COUNT) {
1595 brcmf_err("event payload too small (%d)\n", e->datalen);
1596 return -EINVAL;
1597 }
1598 if (fws->creditmap_received)
1599 return 0;
1600
1601 fws->creditmap_received = true;
1602
1603 brcmf_dbg(TRACE, "enter: credits %pM\n", credits);
1604 brcmf_fws_lock(fws);
1605 for (i = 0; i < ARRAY_SIZE(fws->fifo_credit); i++) {
1606 if (*credits)
1607 fws->fifo_credit_map |= 1 << i;
1608 else
1609 fws->fifo_credit_map &= ~(1 << i);
1610 fws->fifo_credit[i] = *credits++;
1611 }
1612 brcmf_fws_schedule_deq(fws);
1613 brcmf_fws_unlock(fws);
1614 return 0;
1615}
1616
1617static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if *ifp,
1618 const struct brcmf_event_msg *e,
1619 void *data)
1620{
1621 struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
1622
1623 if (fws) {
1624 brcmf_fws_lock(fws);
1625 fws->bcmc_credit_check = true;
1626 brcmf_fws_unlock(fws);
1627 }
1628 return 0;
1629}
1630
1631static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
1632 u8 start, u8 end,
1633 struct sk_buff_head *skb_list)
1634{
1635
1636 __skb_queue_head_init(skb_list);
1637
1638 if (rfi->pend_pkts == 0) {
1639 brcmf_dbg(INFO, "no packets in reorder queue\n");
1640 return;
1641 }
1642
1643 do {
1644 if (rfi->pktslots[start]) {
1645 __skb_queue_tail(skb_list, rfi->pktslots[start]);
1646 rfi->pktslots[start] = NULL;
1647 }
1648 start++;
1649 if (start > rfi->max_idx)
1650 start = 0;
1651 } while (start != end);
1652 rfi->pend_pkts -= skb_queue_len(skb_list);
1653}
1654
1655void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt)
1656{
1657 u8 *reorder_data;
1658 u8 flow_id, max_idx, cur_idx, exp_idx, end_idx;
1659 struct brcmf_ampdu_rx_reorder *rfi;
1660 struct sk_buff_head reorder_list;
1661 struct sk_buff *pnext;
1662 u8 flags;
1663 u32 buf_size;
1664
1665 reorder_data = ((struct brcmf_skb_reorder_data *)pkt->cb)->reorder;
1666 flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET];
1667 flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET];
1668
1669
1670 if (flags == 0xFF) {
1671 brcmf_err("invalid flags...so ignore this packet\n");
1672 brcmf_netif_rx(ifp, pkt);
1673 return;
1674 }
1675
1676 rfi = ifp->drvr->reorder_flows[flow_id];
1677 if (flags & BRCMF_RXREORDER_DEL_FLOW) {
1678 brcmf_dbg(INFO, "flow-%d: delete\n",
1679 flow_id);
1680
1681 if (rfi == NULL) {
1682 brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
1683 flow_id);
1684 brcmf_netif_rx(ifp, pkt);
1685 return;
1686 }
1687
1688 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx,
1689 &reorder_list);
1690
1691 __skb_queue_tail(&reorder_list, pkt);
1692 kfree(rfi);
1693 ifp->drvr->reorder_flows[flow_id] = NULL;
1694 goto netif_rx;
1695 }
1696
1697 if (rfi == NULL) {
1698 buf_size = sizeof(*rfi);
1699 max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
1700
1701 buf_size += (max_idx + 1) * sizeof(pkt);
1702
1703
1704 brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n",
1705 flow_id, max_idx);
1706 rfi = kzalloc(buf_size, GFP_ATOMIC);
1707 if (rfi == NULL) {
1708 brcmf_err("failed to alloc buffer\n");
1709 brcmf_netif_rx(ifp, pkt);
1710 return;
1711 }
1712
1713 ifp->drvr->reorder_flows[flow_id] = rfi;
1714 rfi->pktslots = (struct sk_buff **)(rfi + 1);
1715 rfi->max_idx = max_idx;
1716 }
1717 if (flags & BRCMF_RXREORDER_NEW_HOLE) {
1718 if (rfi->pend_pkts) {
1719 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx,
1720 rfi->exp_idx,
1721 &reorder_list);
1722 WARN_ON(rfi->pend_pkts);
1723 } else {
1724 __skb_queue_head_init(&reorder_list);
1725 }
1726 rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
1727 rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
1728 rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
1729 rfi->pktslots[rfi->cur_idx] = pkt;
1730 rfi->pend_pkts++;
1731 brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n",
1732 flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts);
1733 } else if (flags & BRCMF_RXREORDER_CURIDX_VALID) {
1734 cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
1735 exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
1736
1737 if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) {
1738
1739
1740 if (rfi->pktslots[cur_idx] != NULL) {
1741 brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n");
1742 brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
1743 rfi->pktslots[cur_idx] = NULL;
1744 }
1745 rfi->pktslots[cur_idx] = pkt;
1746 rfi->pend_pkts++;
1747 rfi->cur_idx = cur_idx;
1748 brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n",
1749 flow_id, cur_idx, exp_idx, rfi->pend_pkts);
1750
1751
1752
1753
1754 return;
1755 }
1756 if (rfi->exp_idx == cur_idx) {
1757 if (rfi->pktslots[cur_idx] != NULL) {
1758 brcmf_dbg(INFO, "error buffer pending..free it\n");
1759 brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
1760 rfi->pktslots[cur_idx] = NULL;
1761 }
1762 rfi->pktslots[cur_idx] = pkt;
1763 rfi->pend_pkts++;
1764
1765
1766
1767
1768 brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n",
1769 flow_id, cur_idx, exp_idx, rfi->pend_pkts);
1770
1771 rfi->cur_idx = cur_idx;
1772 rfi->exp_idx = exp_idx;
1773
1774 brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx,
1775 &reorder_list);
1776 brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n",
1777 flow_id, skb_queue_len(&reorder_list),
1778 rfi->pend_pkts);
1779 } else {
1780 u8 end_idx;
1781
1782 brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n",
1783 flow_id, flags, rfi->cur_idx, rfi->exp_idx,
1784 cur_idx, exp_idx);
1785 if (flags & BRCMF_RXREORDER_FLUSH_ALL)
1786 end_idx = rfi->exp_idx;
1787 else
1788 end_idx = exp_idx;
1789
1790
1791 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
1792 &reorder_list);
1793
1794 if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) {
1795 __skb_queue_tail(&reorder_list, pkt);
1796 } else {
1797 rfi->pktslots[cur_idx] = pkt;
1798 rfi->pend_pkts++;
1799 }
1800 rfi->exp_idx = exp_idx;
1801 rfi->cur_idx = cur_idx;
1802 }
1803 } else {
1804
1805 exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
1806
1807 brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n",
1808 flow_id, flags, rfi->exp_idx, exp_idx);
1809 if (flags & BRCMF_RXREORDER_FLUSH_ALL)
1810 end_idx = rfi->exp_idx;
1811 else
1812 end_idx = exp_idx;
1813
1814 brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
1815 &reorder_list);
1816 __skb_queue_tail(&reorder_list, pkt);
1817
1818 rfi->exp_idx = exp_idx;
1819 }
1820netif_rx:
1821 skb_queue_walk_safe(&reorder_list, pkt, pnext) {
1822 __skb_unlink(pkt, &reorder_list);
1823 brcmf_netif_rx(ifp, pkt);
1824 }
1825}
1826
1827void brcmf_fws_hdrpull(struct brcmf_if *ifp, s16 siglen, struct sk_buff *skb)
1828{
1829 struct brcmf_skb_reorder_data *rd;
1830 struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
1831 u8 *signal_data;
1832 s16 data_len;
1833 u8 type;
1834 u8 len;
1835 u8 *data;
1836 s32 status;
1837 s32 err;
1838
1839 brcmf_dbg(HDRS, "enter: ifidx %d, skblen %u, sig %d\n",
1840 ifp->ifidx, skb->len, siglen);
1841
1842 WARN_ON(siglen > skb->len);
1843
1844 if (!siglen)
1845 return;
1846
1847 if ((!fws) || (!fws->fw_signals)) {
1848 skb_pull(skb, siglen);
1849 return;
1850 }
1851
1852 fws->stats.header_pulls++;
1853 data_len = siglen;
1854 signal_data = skb->data;
1855
1856 status = BRCMF_FWS_RET_OK_NOSCHEDULE;
1857 while (data_len > 0) {
1858
1859 type = signal_data[0];
1860
1861
1862
1863
1864 if (type == BRCMF_FWS_TYPE_FILLER) {
1865 signal_data += 1;
1866 data_len -= 1;
1867 continue;
1868 }
1869 len = signal_data[1];
1870 data = signal_data + 2;
1871
1872 brcmf_dbg(HDRS, "tlv type=%s (%d), len=%d (%d)\n",
1873 brcmf_fws_get_tlv_name(type), type, len,
1874 brcmf_fws_get_tlv_len(fws, type));
1875
1876
1877 if (data_len < len + 2)
1878 break;
1879
1880 if (len < brcmf_fws_get_tlv_len(fws, type))
1881 break;
1882
1883 err = BRCMF_FWS_RET_OK_NOSCHEDULE;
1884 switch (type) {
1885 case BRCMF_FWS_TYPE_COMP_TXSTATUS:
1886 break;
1887 case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS:
1888 rd = (struct brcmf_skb_reorder_data *)skb->cb;
1889 rd->reorder = data;
1890 break;
1891 case BRCMF_FWS_TYPE_MACDESC_ADD:
1892 case BRCMF_FWS_TYPE_MACDESC_DEL:
1893 brcmf_fws_macdesc_indicate(fws, type, data);
1894 break;
1895 case BRCMF_FWS_TYPE_MAC_OPEN:
1896 case BRCMF_FWS_TYPE_MAC_CLOSE:
1897 err = brcmf_fws_macdesc_state_indicate(fws, type, data);
1898 break;
1899 case BRCMF_FWS_TYPE_INTERFACE_OPEN:
1900 case BRCMF_FWS_TYPE_INTERFACE_CLOSE:
1901 err = brcmf_fws_interface_state_indicate(fws, type,
1902 data);
1903 break;
1904 case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT:
1905 case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET:
1906 err = brcmf_fws_request_indicate(fws, type, data);
1907 break;
1908 case BRCMF_FWS_TYPE_TXSTATUS:
1909 brcmf_fws_txstatus_indicate(fws, data);
1910 break;
1911 case BRCMF_FWS_TYPE_FIFO_CREDITBACK:
1912 err = brcmf_fws_fifocreditback_indicate(fws, data);
1913 break;
1914 case BRCMF_FWS_TYPE_RSSI:
1915 brcmf_fws_rssi_indicate(fws, *data);
1916 break;
1917 case BRCMF_FWS_TYPE_TRANS_ID:
1918 brcmf_fws_dbg_seqnum_check(fws, data);
1919 break;
1920 case BRCMF_FWS_TYPE_PKTTAG:
1921 case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP:
1922 default:
1923 fws->stats.tlv_invalid_type++;
1924 break;
1925 }
1926 if (err == BRCMF_FWS_RET_OK_SCHEDULE)
1927 status = BRCMF_FWS_RET_OK_SCHEDULE;
1928 signal_data += len + 2;
1929 data_len -= len + 2;
1930 }
1931
1932 if (data_len != 0)
1933 fws->stats.tlv_parse_failed++;
1934
1935 if (status == BRCMF_FWS_RET_OK_SCHEDULE)
1936 brcmf_fws_schedule_deq(fws);
1937
1938
1939
1940
1941 skb_pull(skb, siglen);
1942
1943
1944
1945 if (skb->len == 0)
1946 fws->stats.header_only_pkt++;
1947}
1948
1949static u8 brcmf_fws_precommit_skb(struct brcmf_fws_info *fws, int fifo,
1950 struct sk_buff *p)
1951{
1952 struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p);
1953 struct brcmf_fws_mac_descriptor *entry = skcb->mac;
1954 u8 flags;
1955
1956 if (skcb->state != BRCMF_FWS_SKBSTATE_SUPPRESSED)
1957 brcmf_skb_htod_tag_set_field(p, GENERATION, entry->generation);
1958 flags = BRCMF_FWS_HTOD_FLAG_PKTFROMHOST;
1959 if (brcmf_skb_if_flags_get_field(p, REQUESTED)) {
1960
1961
1962
1963
1964 flags |= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED;
1965 }
1966 brcmf_skb_htod_tag_set_field(p, FLAGS, flags);
1967 return brcmf_fws_hdrpush(fws, p);
1968}
1969
1970static void brcmf_fws_rollback_toq(struct brcmf_fws_info *fws,
1971 struct sk_buff *skb, int fifo)
1972{
1973 struct brcmf_fws_mac_descriptor *entry;
1974 struct sk_buff *pktout;
1975 int qidx, hslot;
1976 int rc = 0;
1977
1978 entry = brcmf_skbcb(skb)->mac;
1979 if (entry->occupied) {
1980 qidx = 2 * fifo;
1981 if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_SUPPRESSED)
1982 qidx++;
1983
1984 pktout = brcmu_pktq_penq_head(&entry->psq, qidx, skb);
1985 if (pktout == NULL) {
1986 brcmf_err("%s queue %d full\n", entry->name, qidx);
1987 rc = -ENOSPC;
1988 }
1989 } else {
1990 brcmf_err("%s entry removed\n", entry->name);
1991 rc = -ENOENT;
1992 }
1993
1994 if (rc) {
1995 fws->stats.rollback_failed++;
1996 hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
1997 brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED,
1998 hslot, 0, 0);
1999 } else {
2000 fws->stats.rollback_success++;
2001 brcmf_fws_return_credits(fws, fifo, 1);
2002 brcmf_fws_macdesc_return_req_credit(skb);
2003 }
2004}
2005
2006static int brcmf_fws_borrow_credit(struct brcmf_fws_info *fws)
2007{
2008 int lender_ac;
2009
2010 if (time_after(fws->borrow_defer_timestamp, jiffies)) {
2011 fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE);
2012 return -ENAVAIL;
2013 }
2014
2015 for (lender_ac = 0; lender_ac <= BRCMF_FWS_FIFO_AC_VO; lender_ac++) {
2016 if (fws->fifo_credit[lender_ac]) {
2017 fws->credits_borrowed[lender_ac]++;
2018 fws->fifo_credit[lender_ac]--;
2019 if (fws->fifo_credit[lender_ac] == 0)
2020 fws->fifo_credit_map &= ~(1 << lender_ac);
2021 fws->fifo_credit_map |= (1 << BRCMF_FWS_FIFO_AC_BE);
2022 brcmf_dbg(DATA, "borrow credit from: %d\n", lender_ac);
2023 return 0;
2024 }
2025 }
2026 fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE);
2027 return -ENAVAIL;
2028}
2029
2030static int brcmf_fws_commit_skb(struct brcmf_fws_info *fws, int fifo,
2031 struct sk_buff *skb)
2032{
2033 struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb);
2034 struct brcmf_fws_mac_descriptor *entry;
2035 int rc;
2036 u8 ifidx;
2037 u8 data_offset;
2038
2039 entry = skcb->mac;
2040 if (IS_ERR(entry))
2041 return PTR_ERR(entry);
2042
2043 data_offset = brcmf_fws_precommit_skb(fws, fifo, skb);
2044 entry->transit_count++;
2045 if (entry->suppressed)
2046 entry->suppr_transit_count++;
2047 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX);
2048 brcmf_fws_unlock(fws);
2049 rc = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb);
2050 brcmf_fws_lock(fws);
2051 brcmf_dbg(DATA, "%s flags %X htod %X bus_tx %d\n", entry->name,
2052 skcb->if_flags, skcb->htod, rc);
2053 if (rc < 0) {
2054 entry->transit_count--;
2055 if (entry->suppressed)
2056 entry->suppr_transit_count--;
2057 (void)brcmf_proto_hdrpull(fws->drvr, false, skb, NULL);
2058 goto rollback;
2059 }
2060
2061 fws->stats.pkt2bus++;
2062 fws->stats.send_pkts[fifo]++;
2063 if (brcmf_skb_if_flags_get_field(skb, REQUESTED))
2064 fws->stats.requested_sent[fifo]++;
2065
2066 return rc;
2067
2068rollback:
2069 brcmf_fws_rollback_toq(fws, skb, fifo);
2070 return rc;
2071}
2072
2073static int brcmf_fws_assign_htod(struct brcmf_fws_info *fws, struct sk_buff *p,
2074 int fifo)
2075{
2076 struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p);
2077 int rc, hslot;
2078
2079 skcb->htod = 0;
2080 skcb->htod_seq = 0;
2081 hslot = brcmf_fws_hanger_get_free_slot(&fws->hanger);
2082 brcmf_skb_htod_tag_set_field(p, HSLOT, hslot);
2083 brcmf_skb_htod_tag_set_field(p, FREERUN, skcb->mac->seq[fifo]);
2084 brcmf_skb_htod_tag_set_field(p, FIFO, fifo);
2085 rc = brcmf_fws_hanger_pushpkt(&fws->hanger, p, hslot);
2086 if (!rc)
2087 skcb->mac->seq[fifo]++;
2088 else
2089 fws->stats.generic_error++;
2090 return rc;
2091}
2092
2093int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb)
2094{
2095 struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
2096 struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb);
2097 struct ethhdr *eh = (struct ethhdr *)(skb->data);
2098 int fifo = BRCMF_FWS_FIFO_BCMC;
2099 bool multicast = is_multicast_ether_addr(eh->h_dest);
2100 int rc = 0;
2101
2102 brcmf_dbg(DATA, "tx proto=0x%X\n", ntohs(eh->h_proto));
2103
2104
2105 skcb->if_flags = 0;
2106 skcb->state = BRCMF_FWS_SKBSTATE_NEW;
2107 brcmf_skb_if_flags_set_field(skb, INDEX, ifp->ifidx);
2108 if (!multicast)
2109 fifo = brcmf_fws_prio2fifo[skb->priority];
2110
2111 brcmf_fws_lock(fws);
2112 if (fifo != BRCMF_FWS_FIFO_AC_BE && fifo < BRCMF_FWS_FIFO_BCMC)
2113 fws->borrow_defer_timestamp = jiffies +
2114 BRCMF_FWS_BORROW_DEFER_PERIOD;
2115
2116 skcb->mac = brcmf_fws_macdesc_find(fws, ifp, eh->h_dest);
2117 brcmf_dbg(DATA, "%s mac %pM multi %d fifo %d\n", skcb->mac->name,
2118 eh->h_dest, multicast, fifo);
2119 if (!brcmf_fws_assign_htod(fws, skb, fifo)) {
2120 brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_DELAYED, fifo, skb);
2121 brcmf_fws_schedule_deq(fws);
2122 } else {
2123 brcmf_err("drop skb: no hanger slot\n");
2124 brcmf_txfinalize(ifp, skb, false);
2125 rc = -ENOMEM;
2126 }
2127 brcmf_fws_unlock(fws);
2128
2129 return rc;
2130}
2131
2132void brcmf_fws_reset_interface(struct brcmf_if *ifp)
2133{
2134 struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;
2135
2136 brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx);
2137 if (!entry)
2138 return;
2139
2140 brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx);
2141}
2142
2143void brcmf_fws_add_interface(struct brcmf_if *ifp)
2144{
2145 struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
2146 struct brcmf_fws_mac_descriptor *entry;
2147
2148 if (!ifp->ndev || !brcmf_fws_queue_skbs(fws))
2149 return;
2150
2151 entry = &fws->desc.iface[ifp->ifidx];
2152 ifp->fws_desc = entry;
2153 brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx);
2154 brcmf_fws_macdesc_set_name(fws, entry);
2155 brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT,
2156 BRCMF_FWS_PSQ_LEN);
2157 brcmf_dbg(TRACE, "added %s\n", entry->name);
2158}
2159
2160void brcmf_fws_del_interface(struct brcmf_if *ifp)
2161{
2162 struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;
2163 struct brcmf_fws_info *fws = drvr_to_fws(ifp->drvr);
2164
2165 if (!entry)
2166 return;
2167
2168 brcmf_fws_lock(fws);
2169 ifp->fws_desc = NULL;
2170 brcmf_dbg(TRACE, "deleting %s\n", entry->name);
2171 brcmf_fws_macdesc_deinit(entry);
2172 brcmf_fws_cleanup(fws, ifp->ifidx);
2173 brcmf_fws_unlock(fws);
2174}
2175
2176static void brcmf_fws_dequeue_worker(struct work_struct *worker)
2177{
2178 struct brcmf_fws_info *fws;
2179 struct brcmf_pub *drvr;
2180 struct sk_buff *skb;
2181 int fifo;
2182 u32 hslot;
2183 u32 ifidx;
2184 int ret;
2185
2186 fws = container_of(worker, struct brcmf_fws_info, fws_dequeue_work);
2187 drvr = fws->drvr;
2188
2189 brcmf_fws_lock(fws);
2190 for (fifo = BRCMF_FWS_FIFO_BCMC; fifo >= 0 && !fws->bus_flow_blocked;
2191 fifo--) {
2192 if (!brcmf_fws_fc_active(fws)) {
2193 while ((skb = brcmf_fws_deq(fws, fifo)) != NULL) {
2194 hslot = brcmf_skb_htod_tag_get_field(skb,
2195 HSLOT);
2196 brcmf_fws_hanger_poppkt(&fws->hanger, hslot,
2197 &skb, true);
2198 ifidx = brcmf_skb_if_flags_get_field(skb,
2199 INDEX);
2200
2201 brcmf_fws_unlock(fws);
2202 ret = brcmf_proto_txdata(drvr, ifidx, 0, skb);
2203 brcmf_fws_lock(fws);
2204 if (ret < 0)
2205 brcmf_txfinalize(brcmf_get_ifp(drvr,
2206 ifidx),
2207 skb, false);
2208 if (fws->bus_flow_blocked)
2209 break;
2210 }
2211 continue;
2212 }
2213 while ((fws->fifo_credit[fifo]) || ((!fws->bcmc_credit_check) &&
2214 (fifo == BRCMF_FWS_FIFO_BCMC))) {
2215 skb = brcmf_fws_deq(fws, fifo);
2216 if (!skb)
2217 break;
2218 fws->fifo_credit[fifo]--;
2219 if (brcmf_fws_commit_skb(fws, fifo, skb))
2220 break;
2221 if (fws->bus_flow_blocked)
2222 break;
2223 }
2224 if ((fifo == BRCMF_FWS_FIFO_AC_BE) &&
2225 (fws->fifo_credit[fifo] == 0) &&
2226 (!fws->bus_flow_blocked)) {
2227 while (brcmf_fws_borrow_credit(fws) == 0) {
2228 skb = brcmf_fws_deq(fws, fifo);
2229 if (!skb) {
2230 brcmf_fws_return_credits(fws, fifo, 1);
2231 break;
2232 }
2233 if (brcmf_fws_commit_skb(fws, fifo, skb))
2234 break;
2235 if (fws->bus_flow_blocked)
2236 break;
2237 }
2238 }
2239 }
2240 brcmf_fws_unlock(fws);
2241}
2242
2243#ifdef DEBUG
2244static int brcmf_debugfs_fws_stats_read(struct seq_file *seq, void *data)
2245{
2246 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
2247 struct brcmf_fws_stats *fwstats = &(drvr_to_fws(bus_if->drvr)->stats);
2248
2249 seq_printf(seq,
2250 "header_pulls: %u\n"
2251 "header_only_pkt: %u\n"
2252 "tlv_parse_failed: %u\n"
2253 "tlv_invalid_type: %u\n"
2254 "mac_update_fails: %u\n"
2255 "ps_update_fails: %u\n"
2256 "if_update_fails: %u\n"
2257 "pkt2bus: %u\n"
2258 "generic_error: %u\n"
2259 "rollback_success: %u\n"
2260 "rollback_failed: %u\n"
2261 "delayq_full: %u\n"
2262 "supprq_full: %u\n"
2263 "txs_indicate: %u\n"
2264 "txs_discard: %u\n"
2265 "txs_suppr_core: %u\n"
2266 "txs_suppr_ps: %u\n"
2267 "txs_tossed: %u\n"
2268 "txs_host_tossed: %u\n"
2269 "bus_flow_block: %u\n"
2270 "fws_flow_block: %u\n"
2271 "send_pkts: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n"
2272 "requested_sent: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n",
2273 fwstats->header_pulls,
2274 fwstats->header_only_pkt,
2275 fwstats->tlv_parse_failed,
2276 fwstats->tlv_invalid_type,
2277 fwstats->mac_update_failed,
2278 fwstats->mac_ps_update_failed,
2279 fwstats->if_update_failed,
2280 fwstats->pkt2bus,
2281 fwstats->generic_error,
2282 fwstats->rollback_success,
2283 fwstats->rollback_failed,
2284 fwstats->delayq_full_error,
2285 fwstats->supprq_full_error,
2286 fwstats->txs_indicate,
2287 fwstats->txs_discard,
2288 fwstats->txs_supp_core,
2289 fwstats->txs_supp_ps,
2290 fwstats->txs_tossed,
2291 fwstats->txs_host_tossed,
2292 fwstats->bus_flow_block,
2293 fwstats->fws_flow_block,
2294 fwstats->send_pkts[0], fwstats->send_pkts[1],
2295 fwstats->send_pkts[2], fwstats->send_pkts[3],
2296 fwstats->send_pkts[4],
2297 fwstats->requested_sent[0],
2298 fwstats->requested_sent[1],
2299 fwstats->requested_sent[2],
2300 fwstats->requested_sent[3],
2301 fwstats->requested_sent[4]);
2302
2303 return 0;
2304}
2305#else
2306static int brcmf_debugfs_fws_stats_read(struct seq_file *seq, void *data)
2307{
2308 return 0;
2309}
2310#endif
2311
2312struct brcmf_fws_info *brcmf_fws_attach(struct brcmf_pub *drvr)
2313{
2314 struct brcmf_fws_info *fws;
2315 struct brcmf_if *ifp;
2316 u32 tlv = BRCMF_FWS_FLAGS_RSSI_SIGNALS;
2317 int rc;
2318 u32 mode;
2319
2320 fws = kzalloc(sizeof(*fws), GFP_KERNEL);
2321 if (!fws) {
2322 rc = -ENOMEM;
2323 goto fail;
2324 }
2325
2326 spin_lock_init(&fws->spinlock);
2327
2328
2329 fws->drvr = drvr;
2330 fws->fcmode = drvr->settings->fcmode;
2331
2332 if ((drvr->bus_if->always_use_fws_queue == false) &&
2333 (fws->fcmode == BRCMF_FWS_FCMODE_NONE)) {
2334 fws->avoid_queueing = true;
2335 brcmf_dbg(INFO, "FWS queueing will be avoided\n");
2336 return fws;
2337 }
2338
2339 fws->fws_wq = create_singlethread_workqueue("brcmf_fws_wq");
2340 if (fws->fws_wq == NULL) {
2341 brcmf_err("workqueue creation failed\n");
2342 rc = -EBADF;
2343 goto fail;
2344 }
2345 INIT_WORK(&fws->fws_dequeue_work, brcmf_fws_dequeue_worker);
2346
2347
2348 if (fws->fcmode != BRCMF_FWS_FCMODE_NONE)
2349 tlv |= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS |
2350 BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS |
2351 BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE |
2352 BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE;
2353
2354 rc = brcmf_fweh_register(drvr, BRCMF_E_FIFO_CREDIT_MAP,
2355 brcmf_fws_notify_credit_map);
2356 if (rc < 0) {
2357 brcmf_err("register credit map handler failed\n");
2358 goto fail;
2359 }
2360 rc = brcmf_fweh_register(drvr, BRCMF_E_BCMC_CREDIT_SUPPORT,
2361 brcmf_fws_notify_bcmc_credit_support);
2362 if (rc < 0) {
2363 brcmf_err("register bcmc credit handler failed\n");
2364 brcmf_fweh_unregister(drvr, BRCMF_E_FIFO_CREDIT_MAP);
2365 goto fail;
2366 }
2367
2368
2369
2370
2371
2372 fws->fw_signals = true;
2373 ifp = brcmf_get_ifp(drvr, 0);
2374 if (brcmf_fil_iovar_int_set(ifp, "tlv", tlv)) {
2375 brcmf_err("failed to set bdcv2 tlv signaling\n");
2376 fws->fcmode = BRCMF_FWS_FCMODE_NONE;
2377 fws->fw_signals = false;
2378 }
2379
2380 if (brcmf_fil_iovar_int_set(ifp, "ampdu_hostreorder", 1))
2381 brcmf_dbg(INFO, "enabling AMPDU host-reorder failed\n");
2382
2383
2384 if (brcmf_fil_iovar_int_get(ifp, "wlfc_mode", &mode) == 0) {
2385 if (BRCMF_FWS_MODE_GET_REUSESEQ(mode)) {
2386 mode = 0;
2387 BRCMF_FWS_MODE_SET_REUSESEQ(mode, 1);
2388 if (brcmf_fil_iovar_int_set(ifp,
2389 "wlfc_mode", mode) == 0) {
2390 BRCMF_FWS_MODE_SET_REUSESEQ(fws->mode, 1);
2391 }
2392 }
2393 }
2394
2395 brcmf_fws_hanger_init(&fws->hanger);
2396 brcmf_fws_macdesc_init(&fws->desc.other, NULL, 0);
2397 brcmf_fws_macdesc_set_name(fws, &fws->desc.other);
2398 brcmf_dbg(INFO, "added %s\n", fws->desc.other.name);
2399 brcmu_pktq_init(&fws->desc.other.psq, BRCMF_FWS_PSQ_PREC_COUNT,
2400 BRCMF_FWS_PSQ_LEN);
2401
2402
2403 brcmf_debugfs_add_entry(drvr, "fws_stats",
2404 brcmf_debugfs_fws_stats_read);
2405
2406 brcmf_dbg(INFO, "%s bdcv2 tlv signaling [%x]\n",
2407 fws->fw_signals ? "enabled" : "disabled", tlv);
2408 return fws;
2409
2410fail:
2411 brcmf_fws_detach(fws);
2412 return ERR_PTR(rc);
2413}
2414
2415void brcmf_fws_detach(struct brcmf_fws_info *fws)
2416{
2417 if (!fws)
2418 return;
2419
2420 if (fws->fws_wq)
2421 destroy_workqueue(fws->fws_wq);
2422
2423
2424 brcmf_fws_lock(fws);
2425 brcmf_fws_cleanup(fws, -1);
2426 brcmf_fws_unlock(fws);
2427
2428
2429 kfree(fws);
2430}
2431
2432bool brcmf_fws_queue_skbs(struct brcmf_fws_info *fws)
2433{
2434 return !fws->avoid_queueing;
2435}
2436
2437bool brcmf_fws_fc_active(struct brcmf_fws_info *fws)
2438{
2439 if (!fws->creditmap_received)
2440 return false;
2441
2442 return fws->fcmode != BRCMF_FWS_FCMODE_NONE;
2443}
2444
2445void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb)
2446{
2447 u32 hslot;
2448
2449 if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_TIM) {
2450 brcmu_pkt_buf_free_skb(skb);
2451 return;
2452 }
2453 brcmf_fws_lock(fws);
2454 hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
2455 brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, hslot, 0, 0);
2456 brcmf_fws_unlock(fws);
2457}
2458
2459void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked)
2460{
2461 struct brcmf_fws_info *fws = drvr_to_fws(drvr);
2462 struct brcmf_if *ifp;
2463 int i;
2464
2465 if (fws->avoid_queueing) {
2466 for (i = 0; i < BRCMF_MAX_IFS; i++) {
2467 ifp = drvr->iflist[i];
2468 if (!ifp || !ifp->ndev)
2469 continue;
2470 brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FLOW,
2471 flow_blocked);
2472 }
2473 } else {
2474 fws->bus_flow_blocked = flow_blocked;
2475 if (!flow_blocked)
2476 brcmf_fws_schedule_deq(fws);
2477 else
2478 fws->stats.bus_flow_block++;
2479 }
2480}
2481