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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
|
/** @file
This library provides basic function for UEFI network stack.
Copyright (c) 2005 - 2008, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _NET_LIB_H_
#define _NET_LIB_H_
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Protocol/DriverBinding.h>
#include <Protocol/ComponentName.h>
#include <Protocol/DriverConfiguration.h>
#include <Protocol/DriverDiagnostics.h>
#include <Protocol/Dpc.h>
typedef UINT32 IP4_ADDR;
typedef UINT32 TCP_SEQNO;
typedef UINT16 TCP_PORTNO;
typedef enum {
NET_ETHER_ADDR_LEN = 6,
NET_IFTYPE_ETHERNET = 0x01,
EFI_IP_PROTO_UDP = 0x11,
EFI_IP_PROTO_TCP = 0x06,
EFI_IP_PROTO_ICMP = 0x01,
//
// The address classification
//
IP4_ADDR_CLASSA = 1,
IP4_ADDR_CLASSB,
IP4_ADDR_CLASSC,
IP4_ADDR_CLASSD,
IP4_ADDR_CLASSE,
IP4_MASK_NUM = 33
} IP4_CLASS_TYPE;
#pragma pack(1)
//
// Ethernet head definition
//
typedef struct {
UINT8 DstMac [NET_ETHER_ADDR_LEN];
UINT8 SrcMac [NET_ETHER_ADDR_LEN];
UINT16 EtherType;
} ETHER_HEAD;
//
// The EFI_IP4_HEADER is hard to use because the source and
// destination address are defined as EFI_IPv4_ADDRESS, which
// is a structure. Two structures can't be compared or masked
// directly. This is why there is an internal representation.
//
typedef struct {
UINT8 HeadLen : 4;
UINT8 Ver : 4;
UINT8 Tos;
UINT16 TotalLen;
UINT16 Id;
UINT16 Fragment;
UINT8 Ttl;
UINT8 Protocol;
UINT16 Checksum;
IP4_ADDR Src;
IP4_ADDR Dst;
} IP4_HEAD;
//
// ICMP head definition. ICMP message is categoried as either an error
// message or query message. Two message types have their own head format.
//
typedef struct {
UINT8 Type;
UINT8 Code;
UINT16 Checksum;
} IP4_ICMP_HEAD;
typedef struct {
IP4_ICMP_HEAD Head;
UINT32 Fourth; // 4th filed of the head, it depends on Type.
IP4_HEAD IpHead;
} IP4_ICMP_ERROR_HEAD;
typedef struct {
IP4_ICMP_HEAD Head;
UINT16 Id;
UINT16 Seq;
} IP4_ICMP_QUERY_HEAD;
//
// UDP header definition
//
typedef struct {
UINT16 SrcPort;
UINT16 DstPort;
UINT16 Length;
UINT16 Checksum;
} EFI_UDP4_HEADER;
//
// TCP header definition
//
typedef struct {
TCP_PORTNO SrcPort;
TCP_PORTNO DstPort;
TCP_SEQNO Seq;
TCP_SEQNO Ack;
UINT8 Res : 4;
UINT8 HeadLen : 4;
UINT8 Flag;
UINT16 Wnd;
UINT16 Checksum;
UINT16 Urg;
} TCP_HEAD;
#pragma pack()
#define NET_MAC_EQUAL(pMac1, pMac2, Len) \
(CompareMem ((pMac1), (pMac2), Len) == 0)
#define NET_MAC_IS_MULTICAST(Mac, BMac, Len) \
(((*((UINT8 *) Mac) & 0x01) == 0x01) && (!NET_MAC_EQUAL (Mac, BMac, Len)))
#define NTOHL(x) (UINT32)((((UINT32) (x) & 0xff) << 24) | \
(((UINT32) (x) & 0xff00) << 8) | \
(((UINT32) (x) & 0xff0000) >> 8) | \
(((UINT32) (x) & 0xff000000) >> 24))
#define HTONL(x) NTOHL(x)
#define NTOHS(x) (UINT16)((((UINT16) (x) & 0xff) << 8) | \
(((UINT16) (x) & 0xff00) >> 8))
#define HTONS(x) NTOHS(x)
//
// Test the IP's attribute, All the IPs are in host byte order.
//
#define IP4_IS_MULTICAST(Ip) (((Ip) & 0xF0000000) == 0xE0000000)
#define IP4_IS_LOCAL_BROADCAST(Ip) ((Ip) == 0xFFFFFFFF)
#define IP4_NET_EQUAL(Ip1, Ip2, NetMask) (((Ip1) & (NetMask)) == ((Ip2) & (NetMask)))
#define IP4_IS_VALID_NETMASK(Ip) (NetGetMaskLength (Ip) != IP4_MASK_NUM)
//
// Convert the EFI_IP4_ADDRESS to plain UINT32 IP4 address.
//
#define EFI_IP4(EfiIpAddr) (*(IP4_ADDR *) ((EfiIpAddr).Addr))
#define EFI_NTOHL(EfiIp) (NTOHL (EFI_IP4 ((EfiIp))))
#define EFI_IP4_EQUAL(Ip1, Ip2) (CompareMem ((Ip1), (Ip2), sizeof (EFI_IPv4_ADDRESS)) == 0)
/**
Return the length of the mask. If the mask is invalid,
return the invalid length 33, which is IP4_MASK_NUM.
NetMask is in the host byte order.
@param NetMask The netmask to get the length from
@return The length of the netmask, IP4_MASK_NUM if the mask isn't
@return supported.
**/
INTN
EFIAPI
NetGetMaskLength (
IN IP4_ADDR Mask
);
/**
Return the class of the address, such as class a, b, c.
Addr is in host byte order.
@param Addr The address to get the class from
@return IP address class, such as IP4_ADDR_CLASSA
**/
INTN
EFIAPI
NetGetIpClass (
IN IP4_ADDR Addr
);
/**
Check whether the IP is a valid unicast address according to
the netmask. If NetMask is zero, use the IP address's class to
get the default mask.
@param Ip The IP to check againist
@param NetMask The mask of the IP
@return TRUE if IP is a valid unicast address on the network, otherwise FALSE
**/
BOOLEAN
Ip4IsUnicast (
IN IP4_ADDR Ip,
IN IP4_ADDR NetMask
);
extern IP4_ADDR gIp4AllMasks [IP4_MASK_NUM];
extern EFI_IPv4_ADDRESS mZeroIp4Addr;
#define NET_IS_DIGIT(Ch) (('0' <= (Ch)) && ((Ch) <= '9'))
#define NET_ROUNDUP(size, unit) (((size) + (unit) - 1) & (~((unit) - 1)))
#define NET_IS_LOWER_CASE_CHAR(Ch) (('a' <= (Ch)) && ((Ch) <= 'z'))
#define NET_IS_UPPER_CASE_CHAR(Ch) (('A' <= (Ch)) && ((Ch) <= 'Z'))
#define TICKS_PER_MS 10000U
#define TICKS_PER_SECOND 10000000U
#define NET_RANDOM(Seed) ((UINT32) ((UINT32) (Seed) * 1103515245UL + 12345) % 4294967295UL)
/**
Extract a UINT32 from a byte stream, then convert it to host
byte order. Use this function to avoid alignment error.
@param Buf The buffer to extract the UINT32.
@return The UINT32 extracted.
**/
UINT32
EFIAPI
NetGetUint32 (
IN UINT8 *Buf
);
/**
Put a UINT32 to the byte stream. Convert it from host byte order
to network byte order before putting.
@param Buf The buffer to put the UINT32
@param Data The data to put
@return None
**/
VOID
EFIAPI
NetPutUint32 (
IN UINT8 *Buf,
IN UINT32 Data
);
/**
Initialize a random seed using current time.
None
@return The random seed initialized with current time.
**/
UINT32
EFIAPI
NetRandomInitSeed (
VOID
);
#define NET_LIST_USER_STRUCT(Entry, Type, Field) \
BASE_CR(Entry, Type, Field)
#define NET_LIST_USER_STRUCT_S(Entry, Type, Field, Sig) \
CR(Entry, Type, Field, Sig)
//
// Iterate through the doule linked list. It is NOT delete safe
//
#define NET_LIST_FOR_EACH(Entry, ListHead) \
for(Entry = (ListHead)->ForwardLink; Entry != (ListHead); Entry = Entry->ForwardLink)
//
// Iterate through the doule linked list. This is delete-safe.
// Don't touch NextEntry. Also, don't use this macro if list
// entries other than the Entry may be deleted when processing
// the current Entry.
//
#define NET_LIST_FOR_EACH_SAFE(Entry, NextEntry, ListHead) \
for(Entry = (ListHead)->ForwardLink, NextEntry = Entry->ForwardLink; \
Entry != (ListHead); \
Entry = NextEntry, NextEntry = Entry->ForwardLink \
)
//
// Make sure the list isn't empty before get the frist/last record.
//
#define NET_LIST_HEAD(ListHead, Type, Field) \
NET_LIST_USER_STRUCT((ListHead)->ForwardLink, Type, Field)
#define NET_LIST_TAIL(ListHead, Type, Field) \
NET_LIST_USER_STRUCT((ListHead)->BackLink, Type, Field)
/**
Remove the first entry on the list
@param Head The list header
@return The entry that is removed from the list, NULL if the list is empty.
**/
LIST_ENTRY *
EFIAPI
NetListRemoveHead (
LIST_ENTRY *Head
);
/**
Remove the last entry on the list
@param Head The list head
@return The entry that is removed from the list, NULL if the list is empty.
**/
LIST_ENTRY *
EFIAPI
NetListRemoveTail (
LIST_ENTRY *Head
);
/**
Insert the NewEntry after the PrevEntry.
@param PrevEntry The previous entry to insert after
@param NewEntry The new entry to insert
@return None
**/
VOID
EFIAPI
NetListInsertAfter (
IN LIST_ENTRY *PrevEntry,
IN LIST_ENTRY *NewEntry
);
/**
Insert the NewEntry before the PostEntry.
@param PostEntry The entry to insert before
@param NewEntry The new entry to insert
@return None
**/
VOID
EFIAPI
NetListInsertBefore (
IN LIST_ENTRY *PostEntry,
IN LIST_ENTRY *NewEntry
);
//
// Object container: EFI network stack spec defines various kinds of
// tokens. The drivers can share code to manage those objects.
//
typedef struct {
LIST_ENTRY Link;
VOID *Key;
VOID *Value;
} NET_MAP_ITEM;
typedef struct {
LIST_ENTRY Used;
LIST_ENTRY Recycled;
UINTN Count;
} NET_MAP;
#define NET_MAP_INCREAMENT 64
/**
Initialize the netmap. Netmap is a reposity to keep the <Key, Value> pairs.
@param Map The netmap to initialize
@return None
**/
VOID
EFIAPI
NetMapInit (
IN NET_MAP *Map
);
/**
To clean up the netmap, that is, release allocated memories.
@param Map The netmap to clean up.
@return None
**/
VOID
EFIAPI
NetMapClean (
IN NET_MAP *Map
);
/**
Test whether the netmap is empty
@param Map The net map to test
@return TRUE if the netmap is empty, otherwise FALSE.
**/
BOOLEAN
EFIAPI
NetMapIsEmpty (
IN NET_MAP *Map
);
/**
Return the number of the <Key, Value> pairs in the netmap.
@param Map The netmap to get the entry number
@return The entry number in the netmap.
**/
UINTN
EFIAPI
NetMapGetCount (
IN NET_MAP *Map
);
/**
Allocate an item to save the <Key, Value> pair to the head of the netmap.
@param Map The netmap to insert into
@param Key The user's key
@param Value The user's value for the key
@retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item
@retval EFI_SUCCESS The item is inserted to the head
**/
EFI_STATUS
EFIAPI
NetMapInsertHead (
IN NET_MAP *Map,
IN VOID *Key,
IN VOID *Value OPTIONAL
);
/**
Allocate an item to save the <Key, Value> pair to the tail of the netmap.
@param Map The netmap to insert into
@param Key The user's key
@param Value The user's value for the key
@retval EFI_OUT_OF_RESOURCES Failed to allocate the memory for the item
@retval EFI_SUCCESS The item is inserted to the tail
**/
EFI_STATUS
EFIAPI
NetMapInsertTail (
IN NET_MAP *Map,
IN VOID *Key,
IN VOID *Value OPTIONAL
);
/**
Find the key in the netmap
@param Map The netmap to search within
@param Key The key to search
@return The point to the item contains the Key, or NULL if Key isn't in the map.
**/
NET_MAP_ITEM *
EFIAPI
NetMapFindKey (
IN NET_MAP *Map,
IN VOID *Key
);
/**
Remove the item from the netmap
@param Map The netmap to remove the item from
@param Item The item to remove
@param Value The variable to receive the value if not NULL
@return The key of the removed item.
**/
VOID *
EFIAPI
NetMapRemoveItem (
IN NET_MAP *Map,
IN NET_MAP_ITEM *Item,
OUT VOID **Value OPTIONAL
);
/**
Remove the first entry on the netmap.
@param Map The netmap to remove the head from
@param Value The variable to receive the value if not NULL
@return The key of the item removed
**/
VOID *
EFIAPI
NetMapRemoveHead (
IN NET_MAP *Map,
OUT VOID **Value OPTIONAL
);
/**
Remove the last entry on the netmap.
@param Map The netmap to remove the tail from
@param Value The variable to receive the value if not NULL
@return The key of the item removed
**/
VOID *
EFIAPI
NetMapRemoveTail (
IN NET_MAP *Map,
OUT VOID **Value OPTIONAL
);
typedef
EFI_STATUS
(*NET_MAP_CALLBACK) (
IN NET_MAP *Map,
IN NET_MAP_ITEM *Item,
IN VOID *Arg
);
/**
Iterate through the netmap and call CallBack for each item. It will
contiue the traverse if CallBack returns EFI_SUCCESS, otherwise, break
from the loop. It returns the CallBack's last return value. This
function is delete safe for the current item.
@param Map The Map to iterate through
@param CallBack The callback function to call for each item.
@param Arg The opaque parameter to the callback
@return It returns the CallBack's last return value.
**/
EFI_STATUS
EFIAPI
NetMapIterate (
IN NET_MAP *Map,
IN NET_MAP_CALLBACK CallBack,
IN VOID *Arg OPTIONAL
);
//
// Helper functions to implement driver binding and service binding protocols.
//
/**
Create a child of the service that is identified by ServiceBindingGuid.
@param ControllerHandle The controller which has the service installed.
@param ImageHandle The image handle used to open service.
@param ServiceBindingGuid The service's Guid.
@param ChildHandle The handle to receive the create child
@retval EFI_SUCCESS The child is successfully created.
@retval Others Failed to create the child.
**/
EFI_STATUS
EFIAPI
NetLibCreateServiceChild (
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ImageHandle,
IN EFI_GUID *ServiceBindingGuid,
OUT EFI_HANDLE *ChildHandle
);
/**
Destory a child of the service that is identified by ServiceBindingGuid.
@param ControllerHandle The controller which has the service installed.
@param ImageHandle The image handle used to open service.
@param ServiceBindingGuid The service's Guid.
@param ChildHandle The child to destory
@retval EFI_SUCCESS The child is successfully destoried.
@retval Others Failed to destory the child.
**/
EFI_STATUS
EFIAPI
NetLibDestroyServiceChild (
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ImageHandle,
IN EFI_GUID *ServiceBindingGuid,
IN EFI_HANDLE ChildHandle
);
/**
Convert the mac address of the simple network protocol installed on
SnpHandle to a unicode string. Callers are responsible for freeing the
string storage.
@param SnpHandle The handle where the simple network protocol is
installed on.
@param ImageHandle The image handle used to act as the agent handle to
get the simple network protocol.
@param MacString The pointer to store the address of the string
representation of the mac address.
@retval EFI_OUT_OF_RESOURCES There are not enough memory resource.
@retval other Failed to open the simple network protocol.
**/
EFI_STATUS
EFIAPI
NetLibGetMacString (
IN EFI_HANDLE SnpHandle,
IN EFI_HANDLE ImageHandle,
IN OUT CHAR16 **MacString
);
/**
Create an IPv4 device path node.
@param Node Pointer to the IPv4 device path node.
@param Controller The handle where the NIC IP4 config protocol resides.
@param LocalIp The local IPv4 address.
@param LocalPort The local port.
@param RemoteIp The remote IPv4 address.
@param RemotePort The remote port.
@param Protocol The protocol type in the IP header.
@param UseDefaultAddress Whether this instance is using default address or not.
**/
VOID
EFIAPI
NetLibCreateIPv4DPathNode (
IN OUT IPv4_DEVICE_PATH *Node,
IN EFI_HANDLE Controller,
IN IP4_ADDR LocalIp,
IN UINT16 LocalPort,
IN IP4_ADDR RemoteIp,
IN UINT16 RemotePort,
IN UINT16 Protocol,
IN BOOLEAN UseDefaultAddress
);
/**
Find the UNDI/SNP handle from controller and protocol GUID.
For example, IP will open a MNP child to transmit/receive
packets, when MNP is stopped, IP should also be stopped. IP
needs to find its own private data which is related the IP's
service binding instance that is install on UNDI/SNP handle.
Now, the controller is either a MNP or ARP child handle. But
IP opens these handle BY_DRIVER, use that info, we can get the
UNDI/SNP handle.
@param Controller Then protocol handle to check
@param ProtocolGuid The protocol that is related with the handle.
@return The UNDI/SNP handle or NULL.
**/
EFI_HANDLE
EFIAPI
NetLibGetNicHandle (
IN EFI_HANDLE Controller,
IN EFI_GUID *ProtocolGuid
);
/**
Add a Deferred Procedure Call to the end of the DPC queue.
@param DpcTpl The EFI_TPL that the DPC should be invoked.
@param DpcProcedure Pointer to the DPC's function.
@param DpcContext Pointer to the DPC's context. Passed to DpcProcedure
when DpcProcedure is invoked.
@retval EFI_SUCCESS The DPC was queued.
@retval EFI_INVALID_PARAMETER DpcTpl is not a valid EFI_TPL.
DpcProcedure is NULL.
@retval EFI_OUT_OF_RESOURCES There are not enough resources available to
add the DPC to the queue.
**/
EFI_STATUS
EFIAPI
NetLibQueueDpc (
IN EFI_TPL DpcTpl,
IN EFI_DPC_PROCEDURE DpcProcedure,
IN VOID *DpcContext OPTIONAL
);
/**
Add a Deferred Procedure Call to the end of the DPC queue.
@retval EFI_SUCCESS One or more DPCs were invoked.
@retval EFI_NOT_FOUND No DPCs were invoked.
**/
EFI_STATUS
EFIAPI
NetLibDispatchDpc (
VOID
);
/**
This is the default unload handle for all the network drivers.
@param ImageHandle The drivers' driver image.
@retval EFI_SUCCESS The image is unloaded.
@retval Others Failed to unload the image.
**/
EFI_STATUS
EFIAPI
NetLibDefaultUnload (
IN EFI_HANDLE ImageHandle
);
typedef enum {
//
//Various signatures
//
NET_BUF_SIGNATURE = SIGNATURE_32 ('n', 'b', 'u', 'f'),
NET_VECTOR_SIGNATURE = SIGNATURE_32 ('n', 'v', 'e', 'c'),
NET_QUE_SIGNATURE = SIGNATURE_32 ('n', 'b', 'q', 'u'),
NET_PROTO_DATA = 64, // Opaque buffer for protocols
NET_BUF_HEAD = 1, // Trim or allocate space from head
NET_BUF_TAIL = 0, // Trim or allocate space from tail
NET_VECTOR_OWN_FIRST = 0x01 // We allocated the 1st block in the vector
} NET_SIGNATURE_TYPE;
#define NET_CHECK_SIGNATURE(PData, SIGNATURE) \
ASSERT (((PData) != NULL) && ((PData)->Signature == (SIGNATURE)))
#define NET_SWAP_SHORT(Value) \
((((Value) & 0xff) << 8) | (((Value) >> 8) & 0xff))
//
// Single memory block in the vector.
//
typedef struct {
UINT32 Len; // The block's length
UINT8 *Bulk; // The block's Data
} NET_BLOCK;
typedef VOID (*NET_VECTOR_EXT_FREE) (VOID *Arg);
//
//NET_VECTOR contains several blocks to hold all packet's
//fragments and other house-keeping stuff for sharing. It
//doesn't specify the where actual packet fragment begins.
//
typedef struct {
UINT32 Signature;
INTN RefCnt; // Reference count to share NET_VECTOR.
NET_VECTOR_EXT_FREE Free; // external function to free NET_VECTOR
VOID *Arg; // opeque argument to Free
UINT32 Flag; // Flags, NET_VECTOR_OWN_FIRST
UINT32 Len; // Total length of the assocated BLOCKs
UINT32 BlockNum;
NET_BLOCK Block[1];
} NET_VECTOR;
//
//NET_BLOCK_OP operate on the NET_BLOCK, It specifies
//where the actual fragment begins and where it ends
//
typedef struct {
UINT8 *BlockHead; // Block's head, or the smallest valid Head
UINT8 *BlockTail; // Block's tail. BlockTail-BlockHead=block length
UINT8 *Head; // 1st byte of the data in the block
UINT8 *Tail; // Tail of the data in the block, Tail-Head=Size
UINT32 Size; // The size of the data
} NET_BLOCK_OP;
//
//NET_BUF is the buffer manage structure used by the
//network stack. Every network packet may be fragmented,
//and contains multiple fragments. The Vector points to
//memory blocks used by the each fragment, and BlockOp
//specifies where each fragment begins and ends.
//
//It also contains a opaque area for protocol to store
//per-packet informations. Protocol must be caution not
//to overwrite the members after that.
//
typedef struct {
UINT32 Signature;
INTN RefCnt;
LIST_ENTRY List; // The List this NET_BUF is on
IP4_HEAD *Ip; // Network layer header, for fast access
TCP_HEAD *Tcp; // Transport layer header, for fast access
UINT8 ProtoData [NET_PROTO_DATA]; //Protocol specific data
NET_VECTOR *Vector; // The vector containing the packet
UINT32 BlockOpNum; // Total number of BlockOp in the buffer
UINT32 TotalSize; // Total size of the actual packet
NET_BLOCK_OP BlockOp[1]; // Specify the position of actual packet
} NET_BUF;
//
//A queue of NET_BUFs, It is just a thin extension of
//NET_BUF functions.
//
typedef struct {
UINT32 Signature;
INTN RefCnt;
LIST_ENTRY List; // The List this buffer queue is on
LIST_ENTRY BufList; // list of queued buffers
UINT32 BufSize; // total length of DATA in the buffers
UINT32 BufNum; // total number of buffers on the chain
} NET_BUF_QUEUE;
//
// Pseudo header for TCP and UDP checksum
//
#pragma pack(1)
typedef struct {
IP4_ADDR SrcIp;
IP4_ADDR DstIp;
UINT8 Reserved;
UINT8 Protocol;
UINT16 Len;
} NET_PSEUDO_HDR;
#pragma pack()
//
// The fragment entry table used in network interfaces. This is
// the same as NET_BLOCK now. Use two different to distinguish
// the two in case that NET_BLOCK be enhanced later.
//
typedef struct {
UINT32 Len;
UINT8 *Bulk;
} NET_FRAGMENT;
#define NET_GET_REF(PData) ((PData)->RefCnt++)
#define NET_PUT_REF(PData) ((PData)->RefCnt--)
#define NETBUF_FROM_PROTODATA(Info) BASE_CR((Info), NET_BUF, ProtoData)
#define NET_BUF_SHARED(Buf) \
(((Buf)->RefCnt > 1) || ((Buf)->Vector->RefCnt > 1))
#define NET_VECTOR_SIZE(BlockNum) \
(sizeof (NET_VECTOR) + ((BlockNum) - 1) * sizeof (NET_BLOCK))
#define NET_BUF_SIZE(BlockOpNum) \
(sizeof (NET_BUF) + ((BlockOpNum) - 1) * sizeof (NET_BLOCK_OP))
#define NET_HEADSPACE(BlockOp) \
(UINTN)((BlockOp)->Head - (BlockOp)->BlockHead)
#define NET_TAILSPACE(BlockOp) \
(UINTN)((BlockOp)->BlockTail - (BlockOp)->Tail)
/**
Allocate a single block NET_BUF. Upon allocation, all the
free space is in the tail room.
@param Len The length of the block.
@retval * Pointer to the allocated NET_BUF. If NULL the
allocation failed due to resource limit.
**/
NET_BUF *
EFIAPI
NetbufAlloc (
IN UINT32 Len
);
/**
Free the buffer and its associated NET_VECTOR.
@param Nbuf Pointer to the NET_BUF to be freed.
@return None.
**/
VOID
EFIAPI
NetbufFree (
IN NET_BUF *Nbuf
);
/**
Get the position of some byte in the net buffer. This can be used
to, for example, retrieve the IP header in the packet. It also
returns the fragment that contains the byte which is used mainly by
the buffer implementation itself.
@param Nbuf Pointer to the net buffer.
@param Offset The index or offset of the byte
@param Index Index of the fragment that contains the block
@retval * Pointer to the nth byte of data in the net buffer.
If NULL, there is no such data in the net buffer.
**/
UINT8 *
EFIAPI
NetbufGetByte (
IN NET_BUF *Nbuf,
IN UINT32 Offset,
OUT UINT32 *Index OPTIONAL
);
/**
Create a copy of NET_BUF that share the associated NET_DATA.
@param Nbuf Pointer to the net buffer to be cloned.
@retval * Pointer to the cloned net buffer.
**/
NET_BUF *
EFIAPI
NetbufClone (
IN NET_BUF *Nbuf
);
/**
Create a duplicated copy of Nbuf, data is copied. Also leave some
head space before the data.
@param Nbuf Pointer to the net buffer to be cloned.
@param Duplicate Pointer to the net buffer to duplicate to, if NULL
a new net buffer is allocated.
@param HeadSpace Length of the head space to reserve
@retval * Pointer to the duplicated net buffer.
**/
NET_BUF *
EFIAPI
NetbufDuplicate (
IN NET_BUF *Nbuf,
IN NET_BUF *Duplicate OPTIONAL,
IN UINT32 HeadSpace
);
/**
Create a NET_BUF structure which contains Len byte data of
Nbuf starting from Offset. A new NET_BUF structure will be
created but the associated data in NET_VECTOR is shared.
This function exists to do IP packet fragmentation.
@param Nbuf Pointer to the net buffer to be cloned.
@param Offset Starting point of the data to be included in new
buffer.
@param Len How many data to include in new data
@param HeadSpace How many bytes of head space to reserve for
protocol header
@retval * Pointer to the cloned net buffer.
**/
NET_BUF *
EFIAPI
NetbufGetFragment (
IN NET_BUF *Nbuf,
IN UINT32 Offset,
IN UINT32 Len,
IN UINT32 HeadSpace
);
/**
Reserve some space in the header room of the buffer.
Upon allocation, all the space are in the tail room
of the buffer. Call this function to move some space
to the header room. This function is quite limited in
that it can only reserver space from the first block
of an empty NET_BUF not built from the external. But
it should be enough for the network stack.
@param Nbuf Pointer to the net buffer.
@param Len The length of buffer to be reserverd.
@return None.
**/
VOID
EFIAPI
NetbufReserve (
IN NET_BUF *Nbuf,
IN UINT32 Len
);
/**
Allocate some space from the header or tail of the buffer.
@param Nbuf Pointer to the net buffer.
@param Len The length of the buffer to be allocated.
@param FromHead The flag to indicate whether reserve the data from
head or tail. TRUE for from head, and FALSE for
from tail.
@retval * Pointer to the first byte of the allocated buffer.
**/
UINT8 *
EFIAPI
NetbufAllocSpace (
IN NET_BUF *Nbuf,
IN UINT32 Len,
IN BOOLEAN FromHead
);
/**
Trim some data from the header or tail of the buffer.
@param Nbuf Pointer to the net buffer.
@param Len The length of the data to be trimmed.
@param FromHead The flag to indicate whether trim data from head or
tail. TRUE for from head, and FALSE for from tail.
@retval UINTN Length of the actually trimmed data.
**/
UINT32
EFIAPI
NetbufTrim (
IN NET_BUF *Nbuf,
IN UINT32 Len,
IN BOOLEAN FromHead
);
/**
Copy the data from the specific offset to the destination.
@param Nbuf Pointer to the net buffer.
@param Offset The sequence number of the first byte to copy.
@param Len Length of the data to copy.
@param Dest The destination of the data to copy to.
@retval UINTN The length of the copied data.
**/
UINT32
EFIAPI
NetbufCopy (
IN NET_BUF *Nbuf,
IN UINT32 Offset,
IN UINT32 Len,
IN UINT8 *Dest
);
/**
Build a NET_BUF from external blocks.
@param ExtFragment Pointer to the data block.
@param ExtNum The number of the data block.
@param HeadSpace The head space to be reserved.
@param HeadLen The length of the protocol header, This function
will pull that number of data into a linear block.
@param ExtFree Pointer to the caller provided free function.
@param Arg The argument passed to ExtFree when ExtFree is
called.
@retval * Pointer to the net buffer built from the data
blocks.
**/
NET_BUF *
EFIAPI
NetbufFromExt (
IN NET_FRAGMENT *ExtFragment,
IN UINT32 ExtNum,
IN UINT32 HeadSpace,
IN UINT32 HeadLen,
IN NET_VECTOR_EXT_FREE ExtFree,
IN VOID *Arg OPTIONAL
);
/**
Build a fragment table to contain the fragments in the
buffer. This is the opposite of the NetbufFromExt.
@param Nbuf Point to the net buffer
@param ExtFragment Pointer to the data block.
@param ExtNum The number of the data block.
@retval EFI_BUFFER_TOO_SMALL The number of non-empty block is bigger than ExtNum
@retval EFI_SUCCESS Fragment table built.
**/
EFI_STATUS
EFIAPI
NetbufBuildExt (
IN NET_BUF *Nbuf,
IN NET_FRAGMENT *ExtFragment,
IN UINT32 *ExtNum
);
/**
Build a NET_BUF from a list of NET_BUF.
@param BufList A List of NET_BUF.
@param HeadSpace The head space to be reserved.
@param HeaderLen The length of the protocol header, This function
will pull that number of data into a linear block.
@param ExtFree Pointer to the caller provided free function.
@param Arg The argument passed to ExtFree when ExtFree is
called.
@retval * Pointer to the net buffer built from the data
blocks.
**/
NET_BUF *
EFIAPI
NetbufFromBufList (
IN LIST_ENTRY *BufList,
IN UINT32 HeadSpace,
IN UINT32 HeaderLen,
IN NET_VECTOR_EXT_FREE ExtFree,
IN VOID *Arg OPTIONAL
);
/**
Free a list of net buffers.
@param Head Pointer to the head of linked net buffers.
@return None.
**/
VOID
EFIAPI
NetbufFreeList (
IN LIST_ENTRY *Head
);
/**
Initiate the net buffer queue.
@param NbufQue Pointer to the net buffer queue to be initiated.
@return None.
**/
VOID
EFIAPI
NetbufQueInit (
IN NET_BUF_QUEUE *NbufQue
);
/**
Allocate an initialized net buffer queue.
None.
@retval * Pointer to the allocated net buffer queue.
**/
NET_BUF_QUEUE *
EFIAPI
NetbufQueAlloc (
VOID
);
/**
Free a net buffer queue.
@param NbufQue Poitner to the net buffer queue to be freed.
@return None.
**/
VOID
EFIAPI
NetbufQueFree (
IN NET_BUF_QUEUE *NbufQue
);
/**
Remove a net buffer from head in the specific queue.
@param NbufQue Pointer to the net buffer queue.
@retval * Pointer to the net buffer removed from the specific
queue.
**/
NET_BUF *
EFIAPI
NetbufQueRemove (
IN NET_BUF_QUEUE *NbufQue
);
/**
Append a buffer to the end of the queue.
@param NbufQue Pointer to the net buffer queue.
@param Nbuf Pointer to the net buffer to be appended.
@return None.
**/
VOID
EFIAPI
NetbufQueAppend (
IN NET_BUF_QUEUE *NbufQue,
IN NET_BUF *Nbuf
);
/**
Copy some data from the buffer queue to the destination.
@param NbufQue Pointer to the net buffer queue.
@param Offset The sequence number of the first byte to copy.
@param Len Length of the data to copy.
@param Dest The destination of the data to copy to.
@retval UINTN The length of the copied data.
**/
UINT32
EFIAPI
NetbufQueCopy (
IN NET_BUF_QUEUE *NbufQue,
IN UINT32 Offset,
IN UINT32 Len,
IN UINT8 *Dest
);
/**
Trim some data from the queue header, release the buffer if
whole buffer is trimmed.
@param NbufQue Pointer to the net buffer queue.
@param Len Length of the data to trim.
@retval UINTN The length of the data trimmed.
**/
UINT32
EFIAPI
NetbufQueTrim (
IN NET_BUF_QUEUE *NbufQue,
IN UINT32 Len
);
/**
Flush the net buffer queue.
@param NbufQue Pointer to the queue to be flushed.
@return None.
**/
VOID
EFIAPI
NetbufQueFlush (
IN NET_BUF_QUEUE *NbufQue
);
/**
Compute checksum for a bulk of data.
@param Bulk Pointer to the data.
@param Len Length of the data, in bytes.
@retval UINT16 The computed checksum.
**/
UINT16
EFIAPI
NetblockChecksum (
IN UINT8 *Bulk,
IN UINT32 Len
);
/**
Add two checksums.
@param Checksum1 The first checksum to be added.
@param Checksum2 The second checksum to be added.
@retval UINT16 The new checksum.
**/
UINT16
EFIAPI
NetAddChecksum (
IN UINT16 Checksum1,
IN UINT16 Checksum2
);
/**
Compute the checksum for a NET_BUF.
@param Nbuf Pointer to the net buffer.
@retval UINT16 The computed checksum.
**/
UINT16
EFIAPI
NetbufChecksum (
IN NET_BUF *Nbuf
);
/**
Compute the checksum for TCP/UDP pseudo header.
Src, Dst are in network byte order. and Len is
in host byte order.
@param Src The source address of the packet.
@param Dst The destination address of the packet.
@param Proto The protocol type of the packet.
@param Len The length of the packet.
@retval UINT16 The computed checksum.
**/
UINT16
EFIAPI
NetPseudoHeadChecksum (
IN IP4_ADDR Src,
IN IP4_ADDR Dst,
IN UINT8 Proto,
IN UINT16 Len
);
#endif
|