/
wifi_arm9.c
1167 lines (989 loc) · 33.2 KB
/
wifi_arm9.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// DS Wifi interface code
// Copyright (C) 2005-2006 Stephen Stair - sgstair@akkit.org - http://www.akkit.org
// wifi_arm9.c - arm9 wifi support code
/******************************************************************************
DSWifi Lib and test materials are licenced under the MIT open source licence:
Copyright (c) 2005-2006 Stephen Stair
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
******************************************************************************/
#include <nds.h>
#include "dsregs.h"
#include "wifi_arm9.h"
#include <stdarg.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <netinet/in.h>
enum WIRELESS_MODE wirelessMode = WIRELESS_MODE_WIFI;
inline void setWirelessMode(enum WIRELESS_MODE mode) {
if(mode == WIRELESS_MODE_WIFI || mode == WIRELESS_MODE_NIFI) wirelessMode = mode;
}
#ifdef WIFI_USE_TCP_SGIP
#include "sgIP.h"
sgIP_Hub_HWInterface * wifi_hw;
const char * ASSOCSTATUS_STRINGS[] = {
"ASSOCSTATUS_DISCONNECTED", // not *trying* to connect
"ASSOCSTATUS_SEARCHING", // data given does not completely specify an AP, looking for AP that matches the data.
"ASSOCSTATUS_AUTHENTICATING", // connecting...
"ASSOCSTATUS_ASSOCIATING", // connecting...
"ASSOCSTATUS_ACQUIRINGDHCP", // connected to AP, but getting IP data from DHCP
"ASSOCSTATUS_ASSOCIATED", // Connected!
"ASSOCSTATUS_CANNOTCONNECT", // error in connecting...
};
void sgIP_IntrWaitEvent() {
// __asm( ".ARM\n swi 0x060000\n" );
int i,j;
j=0;
for(i=0;i<20000;i++) {
j+=i;
}
}
void * sgIP_malloc(int size) __attribute__((weak));
void sgIP_free(void * ptr) __attribute__((weak));
//////////////////////////////////////////////////////////////////////////
// wifi heap allocator system
#define WHEAP_RECORD_FLAG_INUSE 0
#define WHEAP_RECORD_FLAG_UNUSED 1
#define WHEAP_RECORD_FLAG_FREED 2
typedef struct WHEAP_RECORD {
struct WHEAP_RECORD * next;
unsigned short flags, unused;
int size;
} wHeapRecord;
#ifdef SGIP_DEBUG
#define WHEAP_FILL_START 0xAA
#define WHEAP_FILL_END 0xBB
#define WHEAP_PAD_START 4
#define WHEAP_PAD_END 4
#define WHEAP_DO_PAD
#else
#define WHEAP_PAD_START 0
#define WHEAP_PAD_END 0
#undef WHEAP_DO_PAD
#endif
#define WHEAP_RECORD_SIZE (sizeof(wHeapRecord))
#define WHEAP_PAD_SIZE ((WHEAP_PAD_START)+(WHEAP_PAD_END))
#define WHEAP_SIZE_CUTOFF ((WHEAP_RECORD_SIZE)+64)
int wHeapsize;
wHeapRecord * wHeapStart; // start of heap
wHeapRecord * wHeapFirst; // first free block
void wHeapAllocInit(int size) {
wHeapStart=(wHeapRecord *)malloc(size);
if (!wHeapStart) return;
wHeapFirst=wHeapStart;
wHeapStart->flags=WHEAP_RECORD_FLAG_UNUSED;
wHeapStart->next=0;
wHeapStart->size=size-sizeof(wHeapRecord);
}
void * wHeapAlloc(int size) {
wHeapRecord * rec = wHeapFirst;
void * voidptr;
int n;
size=(size+3)&(~3);
if(size==0) size=4;
size+=WHEAP_PAD_SIZE;
if(!rec) { SGIP_DEBUG_MESSAGE(("wHeapAlloc: heap full!")); return 0; } // should not happen given normal use.
while(rec->size<size) {
if(!rec->next) { SGIP_DEBUG_MESSAGE(("wHeapAlloc: heap too full!")); return 0; } // cannot alloc
if(rec->next->flags!=WHEAP_RECORD_FLAG_INUSE) { // try to merge with next one
rec->size+=rec->next->size+WHEAP_RECORD_SIZE;
rec->next=rec->next->next;
} else { // skip ahead to more friendly waters
rec=rec->next;
while(rec->next) {
if(rec->flags!=WHEAP_RECORD_FLAG_INUSE) break;
rec=rec->next;
}
if(rec->flags==WHEAP_RECORD_FLAG_INUSE) { SGIP_DEBUG_MESSAGE(("wHeapAlloc: heap too full!")); return 0; } // no empty slots :(
}
}
rec->flags=WHEAP_RECORD_FLAG_INUSE;
n=rec->size-size;
voidptr = ((char *)rec)+WHEAP_RECORD_SIZE+WHEAP_PAD_START;
if(n<WHEAP_SIZE_CUTOFF) { // pad to include unused portion
rec->unused=n;
} else { // chop block into 2
wHeapRecord * rec2;
rec2=(wHeapRecord *)(((char *)rec)+WHEAP_RECORD_SIZE+size);
rec2->flags=WHEAP_RECORD_FLAG_UNUSED;
rec2->size=rec->size-size-WHEAP_RECORD_SIZE;
rec->size=size;
rec2->next=rec->next;
rec->next=rec2;
rec->unused=0;
}
if(rec==wHeapFirst) {
while(wHeapFirst->next && wHeapFirst->flags==WHEAP_RECORD_FLAG_INUSE) wHeapFirst=wHeapFirst->next;
if(wHeapFirst->flags==WHEAP_RECORD_FLAG_INUSE) wHeapFirst=0;
}
#ifdef WHEAP_DO_PAD
{
int i;
for(i=0;i<WHEAP_PAD_START;i++) {
(((unsigned char *)rec)+WHEAP_RECORD_SIZE)[i]=WHEAP_FILL_START;
}
for(i=0;i<WHEAP_PAD_END;i++) {
(((unsigned char *)rec)+WHEAP_RECORD_SIZE+size-WHEAP_PAD_END)[i]=WHEAP_FILL_END;
}
}
#endif
return voidptr;
}
void wHeapFree(void * data) {
wHeapRecord * rec = (wHeapRecord *)(((char *)data)-WHEAP_RECORD_SIZE-WHEAP_PAD_START);
#ifdef WHEAP_DO_PAD
{
int size=rec->size-rec->unused;
int i;
for(i=0;i<WHEAP_PAD_START;i++) {
if((((unsigned char *)rec)+WHEAP_RECORD_SIZE)[i]!=WHEAP_FILL_START) break;
}
if(i!=WHEAP_PAD_START) { // note heap error
SGIP_DEBUG_MESSAGE(("wHeapFree: Corruption found before allocated data! 0x%X",data));
}
for(i=0;i<WHEAP_PAD_END;i++) {
if((((unsigned char *)rec)+WHEAP_RECORD_SIZE+size-WHEAP_PAD_END)[i]!=WHEAP_FILL_END) break;
}
if(i!=WHEAP_PAD_END) { // note heap error
SGIP_DEBUG_MESSAGE(("wHeapFree: Corruption found after allocated data! 0x%x",data));
}
}
#endif
if(rec->flags!=WHEAP_RECORD_FLAG_INUSE) { // note heap error
SGIP_DEBUG_MESSAGE(("wHeapFree: Data already freed! 0x%X",data));
}
rec->flags=WHEAP_RECORD_FLAG_FREED;
if(rec<wHeapFirst || !wHeapFirst) wHeapFirst=rec; // reposition the "starting" pointer.
}
//////////////////////////////////////////////////////////////////////////
void * sgIP_malloc(int size) { return wHeapAlloc(size); }
void sgIP_free(void * ptr) { wHeapFree(ptr); }
#endif
void ethhdr_print(char f, void * d) {
char buffer[33];
int i;
int t,c;
buffer[0]=f;
buffer[1]=':';
buffer[14]=' ';
buffer[27]=' ';
buffer[32]=0;
for(i=0;i<6;i++) {
t=((u8 *)d)[i];
c=t&15;
if(c>9) c+='A'-10; else c+='0';
buffer[3+i*2]=c;
c=(t>>4)&15;
if(c>9) c+='A'-10; else c+='0';
buffer[2+i*2]=c;
t=((u8 *)d)[i+6];
c=t&15;
if(c>9) c+='A'-10; else c+='0';
buffer[16+i*2]=c;
c=(t>>4)&15;
if(c>9) c+='A'-10; else c+='0';
buffer[15+i*2]=c;
}
for(i=0;i<2;i++) {
t=((u8 *)d)[i+12];
c=t&15;
if(c>9) c+='A'-10; else c+='0';
buffer[29+i*2]=c;
c=(t>>4)&15;
if(c>9) c+='A'-10; else c+='0';
buffer[28+i*2]=c;
}
SGIP_DEBUG_MESSAGE((buffer));
}
Wifi_MainStruct Wifi_Data_Struct;
volatile Wifi_MainStruct * WifiData = 0;
WifiPacketHandler packethandler = 0;
WifiSyncHandler synchandler = 0;
void erasemem(void * mem, int length) {
int i;
char * m = (char *)mem;
for(i=0;i<length;i++)
m[i]=0;
}
void Wifi_CopyMacAddr(volatile void * dest, volatile void * src) {
((u16 *)dest)[0]=((u16 *)src)[0];
((u16 *)dest)[1]=((u16 *)src)[1];
((u16 *)dest)[2]=((u16 *)src)[2];
}
int Wifi_CmpMacAddr(volatile void * mac1,volatile void * mac2) {
return (((u16 *)mac1)[0]==((u16 *)mac2)[0]) && (((u16 *)mac1)[1]==((u16 *)mac2)[1]) && (((u16 *)mac1)[2]==((u16 *)mac2)[2]);
}
u32 Wifi_TxBufferWordsAvailable() {
s32 size=WifiData->txbufIn-WifiData->txbufOut-1;
if(size<0) size += WIFI_TXBUFFER_SIZE/2;
return size;
}
void Wifi_TxBufferWrite(s32 start, s32 len, u16 * data) {
int writelen;
while(len>0) {
writelen=len;
if(writelen>(WIFI_TXBUFFER_SIZE/2)-start) writelen=(WIFI_TXBUFFER_SIZE/2)-start;
len-=writelen;
while(writelen) {
WifiData->txbufData[start++]=*(data++);
writelen--;
}
start=0;
}
}
int Wifi_RxRawReadPacket(s32 packetID, s32 readlength, u16 * data) {
int readlen,read_data;
readlength= (readlength+1)/2;
read_data=0;
while(readlength>0) {
readlen=readlength;
if(readlen>(WIFI_RXBUFFER_SIZE/2)-packetID) readlen=(WIFI_RXBUFFER_SIZE/2)-packetID;
readlength-=readlen;
read_data+=readlen;
while(readlen>0) {
*(data++) = WifiData->rxbufData[packetID++];
readlen--;
}
packetID=0;
}
return read_data;
}
u16 Wifi_RxReadOffset(s32 base, s32 offset) {
base+=offset;
if(base>=(WIFI_RXBUFFER_SIZE/2)) base -= (WIFI_RXBUFFER_SIZE/2);
return WifiData->rxbufData[base];
}
// datalen = size of packet from beginning of 802.11 header to end, but not including CRC.
int Wifi_RawTxFrame(u16 datalen, u16 rate, u16 * data) {
if(wirelessMode == WIRELESS_MODE_WIFI) {
Wifi_TxHeader txh;
int sizeneeded;
int base;
sizeneeded=(datalen+12+1)/2;
if(sizeneeded>Wifi_TxBufferWordsAvailable()) {WifiData->stats[WSTAT_TXQUEUEDREJECTED]++; return -1; }
txh.enable_flags=0;
txh.unknown=0;
txh.countup=0;
txh.beaconfreq=0;
txh.tx_rate=rate;
txh.tx_length=datalen+4;
base = WifiData->txbufOut;
Wifi_TxBufferWrite(base,6,(u16 *)&txh);
base += 6;
if(base>=(WIFI_TXBUFFER_SIZE/2)) base -= WIFI_TXBUFFER_SIZE/2;
Wifi_TxBufferWrite(base,(datalen+1)/2,data);
base += (datalen+1)/2;
if(base>=(WIFI_TXBUFFER_SIZE/2)) base -= WIFI_TXBUFFER_SIZE/2;
WifiData->txbufOut=base;
WifiData->stats[WSTAT_TXQUEUEDPACKETS]++;
WifiData->stats[WSTAT_TXQUEUEDBYTES]+=sizeneeded;
if(synchandler) synchandler();
return 0;
}
else if(wirelessMode == WIRELESS_MODE_NIFI) {
int base,framelen, hdrlen, writelen;
int copytotal, copyexpect;
u16 framehdr[6 + 12 + 2];
framelen=datalen + 8 + (WifiData->wepmode7 ? 4 : 0);
if(framelen + 40>Wifi_TxBufferWordsAvailable()*2) { // error, can't send this much!
SGIP_DEBUG_MESSAGE(("Transmit:err_space"));
return -1; //?
}
framehdr[0]=0;
framehdr[1]=0;
framehdr[2]=0;
framehdr[3]=0;
framehdr[4]=0; // rate, will be filled in by the arm7.
hdrlen=18;
framehdr[6]=0x0208;
framehdr[7]=0;
// MACs.
memset(framehdr + 8, 0xFF, 18);
if(WifiData->wepmode7)
{
framehdr[6] |=0x4000;
hdrlen=20;
}
framehdr[17] = 0;
framehdr[18] = 0; // wep IV, will be filled in if needed on the arm7 side.
framehdr[19] = 0;
framehdr[5]=framelen+hdrlen * 2 - 12 + 4;
copyexpect= ((framelen+hdrlen * 2 - 12 + 4) + 12 - 4 + 1)/2;
copytotal=0;
WifiData->stats[WSTAT_TXQUEUEDPACKETS]++;
WifiData->stats[WSTAT_TXQUEUEDBYTES] += framelen + hdrlen * 2;
base = WifiData->txbufOut;
Wifi_TxBufferWrite(base,hdrlen,framehdr);
base += hdrlen;
copytotal += hdrlen;
if(base >= (WIFI_TXBUFFER_SIZE / 2)) base -= WIFI_TXBUFFER_SIZE / 2;
// add LLC header
framehdr[0]=0xAAAA;
framehdr[1]=0x0003;
framehdr[2]=0x0000;
unsigned short protocol = 0x08FE;
framehdr[3] = ((protocol >> 8) & 0xFF) | ((protocol << 8) & 0xFF00);
Wifi_TxBufferWrite(base, 4, framehdr);
base += 4;
copytotal += 4;
if(base>=(WIFI_TXBUFFER_SIZE/2)) base -= WIFI_TXBUFFER_SIZE/2;
writelen = datalen;
if(writelen) {
Wifi_TxBufferWrite(base,(writelen+1)/2,data);
base += (writelen + 1) / 2;
copytotal += (writelen + 1) / 2;
if(base>=(WIFI_TXBUFFER_SIZE/2)) base -= WIFI_TXBUFFER_SIZE/2;
}
if(WifiData->wepmode7)
{ // add required extra bytes
base += 2;
copytotal += 2;
if(base >= (WIFI_TXBUFFER_SIZE / 2)) base -= WIFI_TXBUFFER_SIZE / 2;
}
WifiData->txbufOut = base; // update fifo out pos, done sending packet.
if(copytotal!=copyexpect)
{
SGIP_DEBUG_MESSAGE(("Tx exp:%i que:%i",copyexpect,copytotal));
}
if(synchandler) synchandler();
return 0;
}
else {
return 0;
}
}
void Wifi_RawSetPacketHandler(WifiPacketHandler wphfunc) {
packethandler=wphfunc;
}
void Wifi_SetSyncHandler(WifiSyncHandler wshfunc) {
synchandler=wshfunc;
}
void Wifi_DisableWifi() {
WifiData->reqMode=WIFIMODE_DISABLED;
WifiData->reqReqFlags &= ~WFLAG_REQ_APCONNECT;
}
void Wifi_EnableWifi() {
WifiData->reqMode=WIFIMODE_NORMAL;
WifiData->reqReqFlags &= ~WFLAG_REQ_APCONNECT;
}
void Wifi_SetPromiscuousMode(int enable) {
if(enable) WifiData->reqReqFlags |= WFLAG_REQ_PROMISC;
else WifiData->reqReqFlags &= ~WFLAG_REQ_PROMISC;
}
void Wifi_ScanMode() {
WifiData->reqMode=WIFIMODE_SCAN;
WifiData->reqReqFlags &= ~WFLAG_REQ_APCONNECT;
}
void Wifi_SetChannel(int channel) {
if(channel<1 || channel>13) return;
if(WifiData->reqMode==WIFIMODE_NORMAL || WifiData->reqMode==WIFIMODE_SCAN) {
WifiData->reqChannel=channel;
}
}
int Wifi_GetNumAP() {
int i,j;
j=0;
for(i=0;i<WIFI_MAX_AP;i++) if(WifiData->aplist[i].flags&WFLAG_APDATA_ACTIVE) j++;
return j;
}
int Wifi_GetAPData(int apnum, Wifi_AccessPoint * apdata) {
int j;
if(!apdata) return WIFI_RETURN_PARAMERROR;
if(WifiData->aplist[apnum].flags&WFLAG_APDATA_ACTIVE) {
while(Spinlock_Acquire(WifiData->aplist[apnum])!=SPINLOCK_OK);
{
// additionally calculate average RSSI here
WifiData->aplist[apnum].rssi=0;
for(j=0;j<8;j++) {
WifiData->aplist[apnum].rssi+=WifiData->aplist[apnum].rssi_past[j];
}
WifiData->aplist[apnum].rssi = WifiData->aplist[apnum].rssi >> 3;
*apdata = WifiData->aplist[apnum]; // yay for struct copy!
Spinlock_Release(WifiData->aplist[apnum]);
return WIFI_RETURN_OK;
}
}
return WIFI_RETURN_ERROR;
}
int Wifi_FindMatchingAP(int numaps, Wifi_AccessPoint * apdata, Wifi_AccessPoint * match_dest) {
int ap_match,i,j,n;
Wifi_AccessPoint ap;
u16 macaddrzero[3] = {0,0,0}; // check for empty mac addr
ap_match=-1;
for(i=0;i<Wifi_GetNumAP();i++){
Wifi_GetAPData(i,&ap);
for(j=0;j<numaps;j++) {
if(apdata[j].ssid_len>32 || ((signed char)apdata[j].ssid_len)<0) continue;
if(apdata[j].ssid_len>0) { // compare SSIDs
if(apdata[j].ssid_len!=ap.ssid_len) continue;
for(n=0;n<apdata[j].ssid_len;n++) {
if(apdata[j].ssid[n]!=ap.ssid[n]) break;
}
if(n!=apdata[j].ssid_len) continue;
}
if(!Wifi_CmpMacAddr(apdata[j].macaddr,macaddrzero)) { // compare mac addr
if(!Wifi_CmpMacAddr(apdata[j].macaddr,ap.macaddr)) continue;
}
if(apdata[j].channel!=0) { // compare channels
if(apdata[j].channel!=ap.channel) continue;
}
if(j<ap_match || ap_match==-1) {
ap_match=j;
if(match_dest) *match_dest = ap;
}
if(ap_match==0) return ap_match;
}
}
return ap_match;
}
int wifi_connect_state = 0; // -1==error, 0==searching, 1==associating, 2==dhcp'ing, 3==done, 4=searching wfc data
Wifi_AccessPoint wifi_connect_point;
int Wifi_ConnectAP(Wifi_AccessPoint * apdata, int wepmode, int wepkeyid, u8 * wepkey) {
int i;
Wifi_AccessPoint ap;
wifi_connect_state=-1;
if(!apdata) return -1;
if(((signed char)apdata->ssid_len)<0 || apdata->ssid_len>32) return -1;
Wifi_DisconnectAP();
wifi_connect_state=0;
WifiData->wepmode9=wepmode; // copy data
WifiData->wepkeyid9=wepkeyid;
if(wepmode != WEPMODE_NONE && wepkey)
{
for(i=0;i<20;i++) {
WifiData->wepkey9[i]=wepkey[i];
}
}
i=Wifi_FindMatchingAP(1,apdata,&ap);
if(i==0) {
Wifi_CopyMacAddr(WifiData->bssid9, ap.bssid);
Wifi_CopyMacAddr(WifiData->apmac9, ap.bssid);
WifiData->ssid9[0]=ap.ssid_len;
for(i=0;i<32;i++) {
WifiData->ssid9[i+1]=ap.ssid[i];
}
WifiData->apchannel9=ap.channel;
for(i=0;i<16;i++) WifiData->baserates9[i]=ap.base_rates[i];
WifiData->reqMode=WIFIMODE_NORMAL;
WifiData->reqReqFlags |= WFLAG_REQ_APCONNECT | WFLAG_REQ_APCOPYVALUES;
wifi_connect_state=1;
} else {
WifiData->reqMode=WIFIMODE_SCAN;
wifi_connect_point = *apdata;
}
return 0;
}
void Wifi_AutoConnect() {
if(!(WifiData->wfc_enable[0]&0x80)) {
wifi_connect_state=-1;
} else {
wifi_connect_state=4;
WifiData->reqMode=WIFIMODE_SCAN;
}
}
static
void sgIP_DNS_Record_Localhost()
{
sgIP_DNS_Record *rec;
const unsigned char * resdata_c = (unsigned char *)&(wifi_hw->ipaddr);
rec = sgIP_DNS_GetUnusedRecord();
rec->flags=SGIP_DNS_FLAG_ACTIVE | SGIP_DNS_FLAG_BUSY;
rec->addrlen = 4;
rec->numalias = 1;
gethostname(rec->aliases[0], 256);
gethostname(rec->name, 256);
rec->numaddr = 1;
rec->addrdata[0] = resdata_c[0];
rec->addrdata[1] = resdata_c[1];
rec->addrdata[2] = resdata_c[2];
rec->addrdata[3] = resdata_c[3];
rec->addrclass = AF_INET;
rec->TTL = 0;
rec->flags=SGIP_DNS_FLAG_ACTIVE | SGIP_DNS_FLAG_BUSY|SGIP_DNS_FLAG_RESOLVED;
}
int Wifi_AssocStatus() {
switch(wifi_connect_state) {
case -1: // error
return ASSOCSTATUS_CANNOTCONNECT;
case 0: // searching
{
int i;
Wifi_AccessPoint ap;
i=Wifi_FindMatchingAP(1,&wifi_connect_point,&ap);
if(i==0) {
Wifi_CopyMacAddr(WifiData->bssid9, ap.bssid);
Wifi_CopyMacAddr(WifiData->apmac9, ap.bssid);
WifiData->ssid9[0]=ap.ssid_len;
for(i=0;i<32;i++) {
WifiData->ssid9[i+1]=ap.ssid[i];
}
WifiData->apchannel9=ap.channel;
for(i=0;i<16;i++) WifiData->baserates9[i]=ap.base_rates[i];
WifiData->reqMode=WIFIMODE_NORMAL;
WifiData->reqReqFlags |= WFLAG_REQ_APCONNECT | WFLAG_REQ_APCOPYVALUES;
wifi_connect_state=1;
}
}
return ASSOCSTATUS_SEARCHING;
case 1: // associating
switch(WifiData->curMode) {
case WIFIMODE_DISABLED:
case WIFIMODE_NORMAL:
case WIFIMODE_DISASSOCIATE:
return ASSOCSTATUS_DISCONNECTED;
case WIFIMODE_SCAN:
if(WifiData->reqReqFlags&WFLAG_REQ_APCONNECT) return ASSOCSTATUS_AUTHENTICATING;
return ASSOCSTATUS_DISCONNECTED;
case WIFIMODE_ASSOCIATE:
switch(WifiData->authlevel) {
case WIFI_AUTHLEVEL_DISCONNECTED:
return ASSOCSTATUS_AUTHENTICATING;
case WIFI_AUTHLEVEL_AUTHENTICATED:
case WIFI_AUTHLEVEL_DEASSOCIATED:
return ASSOCSTATUS_ASSOCIATING;
case WIFI_AUTHLEVEL_ASSOCIATED:
#ifdef WIFI_USE_TCP_SGIP
if(wifi_hw) {
if(!(wifi_hw->ipaddr)) {
sgIP_DHCP_Start(wifi_hw,wifi_hw->dns[0]==0);
wifi_connect_state=2;
return ASSOCSTATUS_ACQUIRINGDHCP;
}
}
sgIP_ARP_SendGratARP(wifi_hw);
#endif
wifi_connect_state=3;
WifiData->flags9|=WFLAG_ARM9_NETREADY;
return ASSOCSTATUS_ASSOCIATED;
}
break;
case WIFIMODE_ASSOCIATED:
#ifdef WIFI_USE_TCP_SGIP
if(wifi_hw) {
if(!(wifi_hw->ipaddr)) {
sgIP_DHCP_Start(wifi_hw,wifi_hw->dns[0]==0);
wifi_connect_state=2;
return ASSOCSTATUS_ACQUIRINGDHCP;
}
}
sgIP_ARP_SendGratARP(wifi_hw);
#endif
wifi_connect_state=3;
WifiData->flags9|=WFLAG_ARM9_NETREADY;
return ASSOCSTATUS_ASSOCIATED;
case WIFIMODE_CANNOTASSOCIATE:
return ASSOCSTATUS_CANNOTCONNECT;
}
return ASSOCSTATUS_DISCONNECTED;
case 2: // dhcp'ing
#ifdef WIFI_USE_TCP_SGIP
{
int i;
i=sgIP_DHCP_Update();
if(i!=SGIP_DHCP_STATUS_WORKING) {
switch(i) {
case SGIP_DHCP_STATUS_SUCCESS:
wifi_connect_state=3;
WifiData->flags9|=WFLAG_ARM9_NETREADY;
sgIP_ARP_SendGratARP(wifi_hw);
sgIP_DNS_Record_Localhost();
return ASSOCSTATUS_ASSOCIATED;
default:
case SGIP_DHCP_STATUS_IDLE:
case SGIP_DHCP_STATUS_FAILED:
Wifi_DisconnectAP();
wifi_connect_state=-1;
return ASSOCSTATUS_CANNOTCONNECT;
}
}
}
#else
// should never get here (dhcp state) without sgIP!
Wifi_DisconnectAP();
wifi_connect_state=-1;
return ASSOCSTATUS_CANNOTCONNECT;
#endif
return ASSOCSTATUS_ACQUIRINGDHCP;
case 3: // connected!
return ASSOCSTATUS_ASSOCIATED;
case 4: // search nintendo WFC data for a suitable AP
{
int n,i;
for(n=0;n<3;n++) if(!(WifiData->wfc_enable[n]&0x80)) break;
Wifi_AccessPoint ap;
n=Wifi_FindMatchingAP(n,(Wifi_AccessPoint*)WifiData->wfc_ap,&ap);
if(n!=-1) {
#ifdef WIFI_USE_TCP_SGIP
Wifi_SetIP(WifiData->wfc_config[n][0],WifiData->wfc_config[n][1],WifiData->wfc_config[n][2],WifiData->wfc_config[n][3],WifiData->wfc_config[n][4]);
#endif
WifiData->wepmode9=WifiData->wfc_enable[n]&0x03; // copy data
WifiData->wepkeyid9=(WifiData->wfc_enable[n]>>4)&7;
for(i=0;i<16;i++) {
WifiData->wepkey9[i]=WifiData->wfc_wepkey[n][i];
}
Wifi_CopyMacAddr(WifiData->bssid9, ap.bssid);
Wifi_CopyMacAddr(WifiData->apmac9, ap.bssid);
WifiData->ssid9[0]=ap.ssid_len;
for(i=0;i<32;i++) {
WifiData->ssid9[i+1]=ap.ssid[i];
}
WifiData->apchannel9=ap.channel;
for(i=0;i<16;i++) WifiData->baserates9[i]=ap.base_rates[i];
WifiData->reqMode=WIFIMODE_NORMAL;
WifiData->reqReqFlags |= WFLAG_REQ_APCONNECT | WFLAG_REQ_APCOPYVALUES;
wifi_connect_state=1;
return ASSOCSTATUS_SEARCHING;
}
}
return ASSOCSTATUS_SEARCHING;
}
return ASSOCSTATUS_CANNOTCONNECT;
}
int Wifi_DisconnectAP() {
WifiData->reqMode=WIFIMODE_NORMAL;
WifiData->reqReqFlags &= ~WFLAG_REQ_APCONNECT;
WifiData->flags9&=~WFLAG_ARM9_NETREADY;
wifi_connect_state=-1;
return 0;
}
#ifdef WIFI_USE_TCP_SGIP
int Wifi_TransmitFunction(sgIP_Hub_HWInterface * hw, sgIP_memblock * mb) {
// convert ethernet frame into wireless frame and output.
// ethernet header: 6byte dest, 6byte src, 2byte protocol_id
// assumes individual pbuf len is >=14 bytes, it's pretty likely ;) - also hopes pbuf len is a multiple of 2 :|
int base,framelen, hdrlen, writelen;
int copytotal, copyexpect;
u16 framehdr[6+12+2];
sgIP_memblock * t;
framelen=mb->totallength-14+8 + (WifiData->wepmode7?4:0);
if(!(WifiData->flags9&WFLAG_ARM9_NETUP)) {
SGIP_DEBUG_MESSAGE(("Transmit:err_netdown"));
sgIP_memblock_free(mb);
return 0; //?
}
if(framelen+40>Wifi_TxBufferWordsAvailable()*2) { // error, can't send this much!
SGIP_DEBUG_MESSAGE(("Transmit:err_space"));
sgIP_memblock_free(mb);
return 0; //?
}
ethhdr_print('T',mb->datastart);
framehdr[0]=0;
framehdr[1]=0;
framehdr[2]=0;
framehdr[3]=0;
framehdr[4]=0; // rate, will be filled in by the arm7.
hdrlen=18;
framehdr[7]=0;
if(WifiData->curReqFlags&WFLAG_REQ_APADHOC) { // adhoc mode
framehdr[6]=0x0008;
Wifi_CopyMacAddr(framehdr+14,WifiData->bssid7);
Wifi_CopyMacAddr(framehdr+11,WifiData->MacAddr);
Wifi_CopyMacAddr(framehdr+8,((u8 *)mb->datastart));
} else {
framehdr[6]=0x0108;
Wifi_CopyMacAddr(framehdr+8,WifiData->bssid7);
Wifi_CopyMacAddr(framehdr+11,WifiData->MacAddr);
Wifi_CopyMacAddr(framehdr+14,((u8 *)mb->datastart));
}
if(WifiData->wepmode7) { framehdr[6] |=0x4000; hdrlen=20; }
framehdr[17] = 0;
framehdr[18] = 0; // wep IV, will be filled in if needed on the arm7 side.
framehdr[19] = 0;
framehdr[5]=framelen+hdrlen*2-12+4;
copyexpect= ((framelen+hdrlen*2-12+4) +12 -4 +1)/2;
copytotal=0;
WifiData->stats[WSTAT_TXQUEUEDPACKETS]++;
WifiData->stats[WSTAT_TXQUEUEDBYTES]+=framelen+hdrlen*2;
base = WifiData->txbufOut;
Wifi_TxBufferWrite(base,hdrlen,framehdr);
base += hdrlen;
copytotal+=hdrlen;
if(base>=(WIFI_TXBUFFER_SIZE/2)) base -= WIFI_TXBUFFER_SIZE/2;
// add LLC header
framehdr[0]=0xAAAA;
framehdr[1]=0x0003;
framehdr[2]=0x0000;
framehdr[3]=((u16 *)mb->datastart)[6]; // frame type
Wifi_TxBufferWrite(base,4,framehdr);
base += 4;
copytotal+=4;
if(base>=(WIFI_TXBUFFER_SIZE/2)) base -= WIFI_TXBUFFER_SIZE/2;
t=mb;
writelen=(mb->thislength-14);
if(writelen) {
Wifi_TxBufferWrite(base,(writelen+1)/2,((u16 *)mb->datastart)+7);
base+=(writelen+1)/2;
copytotal+=(writelen+1)/2;
if(base>=(WIFI_TXBUFFER_SIZE/2)) base -= WIFI_TXBUFFER_SIZE/2;
}
while(mb->next) {
mb=mb->next;
writelen=mb->thislength;
Wifi_TxBufferWrite(base,(writelen+1)/2,((u16 *)mb->datastart));
base+=(writelen+1)/2;
copytotal+=(writelen+1)/2;
if(base>=(WIFI_TXBUFFER_SIZE/2)) base -= WIFI_TXBUFFER_SIZE/2;
}
if(WifiData->wepmode7) { // add required extra bytes
base+=2;
copytotal+=2;
if(base>=(WIFI_TXBUFFER_SIZE/2)) base -= WIFI_TXBUFFER_SIZE/2;
}
WifiData->txbufOut=base; // update fifo out pos, done sending packet.
sgIP_memblock_free(t); // free packet, as we're the last stop on this chain.
if(copytotal!=copyexpect) {
SGIP_DEBUG_MESSAGE(("Tx exp:%i que:%i",copyexpect,copytotal));
}
if(synchandler) synchandler();
return 0;
}
int Wifi_Interface_Init(sgIP_Hub_HWInterface * hw) {
hw->MTU=2300;
hw->ipaddr=(192)|(168<<8)|(1<<16)|(151<<24);
hw->snmask=0x00FFFFFF;
hw->gateway=(192)|(168<<8)|(1<<16)|(1<<24);
hw->dns[0]=(192)|(168<<8)|(1<<16)|(1<<24);
hw->hwaddrlen=6;
Wifi_CopyMacAddr(hw->hwaddr,WifiData->MacAddr);
hw->userdata=0;
return 0;
}
void Wifi_Timer(int num_ms) {
Wifi_Update();
sgIP_Timer(num_ms);
}
#endif
unsigned long Wifi_Init(int initflags) {
erasemem(&Wifi_Data_Struct,sizeof(Wifi_Data_Struct));
DC_FlushAll();
WifiData = (Wifi_MainStruct *) memUncached(&Wifi_Data_Struct); // should prevent the cache from eating us alive.
#ifdef WIFI_USE_TCP_SGIP
switch(initflags & WIFIINIT_OPTION_HEAPMASK) {
case WIFIINIT_OPTION_USEHEAP_128:
wHeapAllocInit(128*1024);
break;
case WIFIINIT_OPTION_USEHEAP_64:
wHeapAllocInit(64*1024);
break;
case WIFIINIT_OPTION_USEHEAP_256:
wHeapAllocInit(256*1024);
break;
case WIFIINIT_OPTION_USEHEAP_512:
wHeapAllocInit(512*1024);
break;
case WIFIINIT_OPTION_USECUSTOMALLOC:
break;
}
sgIP_Init();
#endif
WifiData->flags9 = WFLAG_ARM9_ACTIVE | (initflags & WFLAG_ARM9_INITFLAGMASK) ;
return (u32) &Wifi_Data_Struct;
}
int Wifi_CheckInit() {
if(!WifiData) return 0;
return ((WifiData->flags7 & WFLAG_ARM7_ACTIVE) && (WifiData->flags9 & WFLAG_ARM9_ARM7READY));
}
void Wifi_Update() {
int cnt;
int base, base2, len, fulllen;
if(!WifiData) return;
#ifdef WIFI_USE_TCP_SGIP
if(!(WifiData->flags9&WFLAG_ARM9_ARM7READY)) {
if(WifiData->flags7 & WFLAG_ARM7_ACTIVE) {
WifiData->flags9 |=WFLAG_ARM9_ARM7READY;
// add network interface.
wifi_hw = sgIP_Hub_AddHardwareInterface(&Wifi_TransmitFunction,&Wifi_Interface_Init);
sgIP_timems=WifiData->random; //hacky! but it should work just fine :)
}
}
if(WifiData->authlevel!=WIFI_AUTHLEVEL_ASSOCIATED && WifiData->flags9&WFLAG_ARM9_NETUP) {
WifiData->flags9 &= ~(WFLAG_ARM9_NETUP);
} else if(WifiData->authlevel==WIFI_AUTHLEVEL_ASSOCIATED && !(WifiData->flags9&WFLAG_ARM9_NETUP)) {
WifiData->flags9 |= (WFLAG_ARM9_NETUP);
}
#endif
// check for received packets, forward to whatever wants them.
cnt=0;
while(WifiData->rxbufIn!=WifiData->rxbufOut) {
base = WifiData->rxbufIn;
len=Wifi_RxReadOffset(base,4);
fulllen=((len+3)&(~3))+12;
#ifdef WIFI_USE_TCP_SGIP
// Do lwIP interfacing for rx here
if((Wifi_RxReadOffset(base,6)&0x01CF)==0x0008) // if it is a non-null data packet coming from the AP (toDS==0)
{
u16 framehdr[6+12+2+4];
sgIP_memblock * mb;
int hdrlen;
base2=base;
Wifi_RxRawReadPacket(base,22*2,framehdr);
// ethhdr_print('!',framehdr+8);
if((framehdr[8]==((u16 *)WifiData->MacAddr)[0] && framehdr[9]==((u16 *)WifiData->MacAddr)[1] && framehdr[10]==((u16 *)WifiData->MacAddr)[2]) ||
(framehdr[8]==0xFFFF && framehdr[9]==0xFFFF && framehdr[10]==0xFFFF)) {
// destination matches our mac address, or the broadcast address.
//if(framehdr[6]&0x4000) { // wep enabled (when receiving WEP packets, the IV is stripped for us! how nice :|
// base2+=24; hdrlen=28; // base2+=[wifi hdr 12byte]+[802 header hdrlen]+[slip hdr 8byte]
//} else {
base2+=22; hdrlen=24;
//}
// SGIP_DEBUG_MESSAGE(("%04X %04X %04X %04X %04X",Wifi_RxReadOffset(base2-8,0),Wifi_RxReadOffset(base2-7,0),Wifi_RxReadOffset(base2-6,0),Wifi_RxReadOffset(base2-5,0),Wifi_RxReadOffset(base2-4,0)));
// check for LLC/SLIP header...
if(Wifi_RxReadOffset(base2-4,0)==0xAAAA && Wifi_RxReadOffset(base2-4,1)==0x0003 && Wifi_RxReadOffset(base2-4,2)==0) {
mb = sgIP_memblock_allocHW(14,len-8-hdrlen);
if(mb) {
if(base2>=(WIFI_RXBUFFER_SIZE/2)) base2-=(WIFI_RXBUFFER_SIZE/2);
Wifi_RxRawReadPacket(base2,(len-8-hdrlen)&(~1),((u16 *)mb->datastart)+7);
if(len&1) ((u8 *)mb->datastart)[len+14-1-8-hdrlen]=Wifi_RxReadOffset(base2,((len-8-hdrlen)/2))&255;
Wifi_CopyMacAddr(mb->datastart,framehdr+8); // copy dest
if(Wifi_RxReadOffset(base,6)&0x0200) { // from DS set?
Wifi_CopyMacAddr(((u8 *)mb->datastart)+6,framehdr+14); // copy src from adrs3
} else {
Wifi_CopyMacAddr(((u8 *)mb->datastart)+6,framehdr+11); // copy src from adrs2
}
((u16 *)mb->datastart)[6]=framehdr[(hdrlen/2)+6+3]; // assume LLC exists and is 8 bytes.
ethhdr_print('R',mb->datastart);
// Done generating recieved data packet... now distribute it.
sgIP_Hub_ReceiveHardwarePacket(wifi_hw,mb);
}
}
}
}
#endif