summaryrefslogtreecommitdiff
path: root/drivers/net/hyperv/hyperv_net.h
blob: 670ef682f268118c34e345dabcbc5e20a718c955 (plain)
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
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *
 * Copyright (c) 2011, Microsoft Corporation.
 *
 * Authors:
 *   Haiyang Zhang <haiyangz@microsoft.com>
 *   Hank Janssen  <hjanssen@microsoft.com>
 *   K. Y. Srinivasan <kys@microsoft.com>
 */

#ifndef _HYPERV_NET_H
#define _HYPERV_NET_H

#include <linux/list.h>
#include <linux/hyperv.h>
#include <linux/rndis.h>

/* RSS related */
#define OID_GEN_RECEIVE_SCALE_CAPABILITIES 0x00010203  /* query only */
#define OID_GEN_RECEIVE_SCALE_PARAMETERS 0x00010204  /* query and set */

#define NDIS_OBJECT_TYPE_RSS_CAPABILITIES 0x88
#define NDIS_OBJECT_TYPE_RSS_PARAMETERS 0x89
#define NDIS_OBJECT_TYPE_OFFLOAD	0xa7

#define NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2 2
#define NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2 2

struct ndis_obj_header {
	u8 type;
	u8 rev;
	u16 size;
} __packed;

/* ndis_recv_scale_cap/cap_flag */
#define NDIS_RSS_CAPS_MESSAGE_SIGNALED_INTERRUPTS 0x01000000
#define NDIS_RSS_CAPS_CLASSIFICATION_AT_ISR       0x02000000
#define NDIS_RSS_CAPS_CLASSIFICATION_AT_DPC       0x04000000
#define NDIS_RSS_CAPS_USING_MSI_X                 0x08000000
#define NDIS_RSS_CAPS_RSS_AVAILABLE_ON_PORTS      0x10000000
#define NDIS_RSS_CAPS_SUPPORTS_MSI_X              0x20000000
#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV4          0x00000100
#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6          0x00000200
#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6_EX       0x00000400

struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */
	struct ndis_obj_header hdr;
	u32 cap_flag;
	u32 num_int_msg;
	u32 num_recv_que;
	u16 num_indirect_tabent;
} __packed;


/* ndis_recv_scale_param flags */
#define NDIS_RSS_PARAM_FLAG_BASE_CPU_UNCHANGED     0x0001
#define NDIS_RSS_PARAM_FLAG_HASH_INFO_UNCHANGED    0x0002
#define NDIS_RSS_PARAM_FLAG_ITABLE_UNCHANGED       0x0004
#define NDIS_RSS_PARAM_FLAG_HASH_KEY_UNCHANGED     0x0008
#define NDIS_RSS_PARAM_FLAG_DISABLE_RSS            0x0010

/* Hash info bits */
#define NDIS_HASH_FUNC_TOEPLITZ 0x00000001
#define NDIS_HASH_IPV4          0x00000100
#define NDIS_HASH_TCP_IPV4      0x00000200
#define NDIS_HASH_IPV6          0x00000400
#define NDIS_HASH_IPV6_EX       0x00000800
#define NDIS_HASH_TCP_IPV6      0x00001000
#define NDIS_HASH_TCP_IPV6_EX   0x00002000

#define NDIS_RSS_INDIRECTION_TABLE_MAX_SIZE_REVISION_2 (128 * 4)
#define NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2   40

#define ITAB_NUM 128

struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */
	struct ndis_obj_header hdr;

	/* Qualifies the rest of the information */
	u16 flag;

	/* The base CPU number to do receive processing. not used */
	u16 base_cpu_number;

	/* This describes the hash function and type being enabled */
	u32 hashinfo;

	/* The size of indirection table array */
	u16 indirect_tabsize;

	/* The offset of the indirection table from the beginning of this
	 * structure
	 */
	u32 indirect_taboffset;

	/* The size of the hash secret key */
	u16 hashkey_size;

	/* The offset of the secret key from the beginning of this structure */
	u32 hashkey_offset;

	u32 processor_masks_offset;
	u32 num_processor_masks;
	u32 processor_masks_entry_size;
};

/* Fwd declaration */
struct ndis_tcp_ip_checksum_info;
struct ndis_pkt_8021q_info;

/*
 * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
 * within the RNDIS
 *
 * The size of this structure is less than 48 bytes and we can now
 * place this structure in the skb->cb field.
 */
struct hv_netvsc_packet {
	/* Bookkeeping stuff */
	u8 cp_partial; /* partial copy into send buffer */

	u8 rmsg_size; /* RNDIS header and PPI size */
	u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
	u8 page_buf_cnt;

	u16 q_idx;
	u16 total_packets;

	u32 total_bytes;
	u32 send_buf_index;
	u32 total_data_buflen;
};

#define NETVSC_HASH_KEYLEN 40

struct netvsc_device_info {
	unsigned char mac_adr[ETH_ALEN];
	u32  num_chn;
	u32  send_sections;
	u32  recv_sections;
	u32  send_section_size;
	u32  recv_section_size;

	u8 rss_key[NETVSC_HASH_KEYLEN];
};

enum rndis_device_state {
	RNDIS_DEV_UNINITIALIZED = 0,
	RNDIS_DEV_INITIALIZING,
	RNDIS_DEV_INITIALIZED,
	RNDIS_DEV_DATAINITIALIZED,
};

struct rndis_device {
	struct net_device *ndev;

	enum rndis_device_state state;

	atomic_t new_req_id;

	spinlock_t request_lock;
	struct list_head req_list;

	struct work_struct mcast_work;
	u32 filter;

	bool link_state;        /* 0 - link up, 1 - link down */

	u8 hw_mac_adr[ETH_ALEN];
	u8 rss_key[NETVSC_HASH_KEYLEN];
	u16 rx_table[ITAB_NUM];
};


/* Interface */
struct rndis_message;
struct ndis_offload_params;
struct netvsc_device;
struct netvsc_channel;
struct net_device_context;

extern u32 netvsc_ring_bytes;

struct netvsc_device *netvsc_device_add(struct hv_device *device,
					const struct netvsc_device_info *info);
int netvsc_alloc_recv_comp_ring(struct netvsc_device *net_device, u32 q_idx);
void netvsc_device_remove(struct hv_device *device);
int netvsc_send(struct net_device *net,
		struct hv_netvsc_packet *packet,
		struct rndis_message *rndis_msg,
		struct hv_page_buffer *page_buffer,
		struct sk_buff *skb);
void netvsc_linkstatus_callback(struct net_device *net,
				struct rndis_message *resp);
int netvsc_recv_callback(struct net_device *net,
			 struct netvsc_device *nvdev,
			 struct netvsc_channel *nvchan);
void netvsc_channel_cb(void *context);
int netvsc_poll(struct napi_struct *napi, int budget);

int rndis_set_subchannel(struct net_device *ndev,
			 struct netvsc_device *nvdev,
			 struct netvsc_device_info *dev_info);
int rndis_filter_open(struct netvsc_device *nvdev);
int rndis_filter_close(struct netvsc_device *nvdev);
struct netvsc_device *rndis_filter_device_add(struct hv_device *dev,
					      struct netvsc_device_info *info);
void rndis_filter_update(struct netvsc_device *nvdev);
void rndis_filter_device_remove(struct hv_device *dev,
				struct netvsc_device *nvdev);
int rndis_filter_set_rss_param(struct rndis_device *rdev,
			       const u8 *key);
int rndis_filter_set_offload_params(struct net_device *ndev,
				    struct netvsc_device *nvdev,
				    struct ndis_offload_params *req_offloads);
int rndis_filter_receive(struct net_device *ndev,
			 struct netvsc_device *net_dev,
			 struct netvsc_channel *nvchan,
			 void *data, u32 buflen);

int rndis_filter_set_device_mac(struct netvsc_device *ndev,
				const char *mac);

void netvsc_switch_datapath(struct net_device *nv_dev, bool vf);

#define NVSP_INVALID_PROTOCOL_VERSION	((u32)0xFFFFFFFF)

#define NVSP_PROTOCOL_VERSION_1		2
#define NVSP_PROTOCOL_VERSION_2		0x30002
#define NVSP_PROTOCOL_VERSION_4		0x40000
#define NVSP_PROTOCOL_VERSION_5		0x50000
#define NVSP_PROTOCOL_VERSION_6		0x60000
#define NVSP_PROTOCOL_VERSION_61	0x60001

enum {
	NVSP_MSG_TYPE_NONE = 0,

	/* Init Messages */
	NVSP_MSG_TYPE_INIT			= 1,
	NVSP_MSG_TYPE_INIT_COMPLETE		= 2,

	NVSP_VERSION_MSG_START			= 100,

	/* Version 1 Messages */
	NVSP_MSG1_TYPE_SEND_NDIS_VER		= NVSP_VERSION_MSG_START,

	NVSP_MSG1_TYPE_SEND_RECV_BUF,
	NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
	NVSP_MSG1_TYPE_REVOKE_RECV_BUF,

	NVSP_MSG1_TYPE_SEND_SEND_BUF,
	NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
	NVSP_MSG1_TYPE_REVOKE_SEND_BUF,

	NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
	NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,

	/* Version 2 messages */
	NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
	NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
	NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,

	NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,

	NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
	NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,

	NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,

	NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
	NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,

	NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
	NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,

	NVSP_MSG2_TYPE_ALLOC_RXBUF,
	NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,

	NVSP_MSG2_TYPE_FREE_RXBUF,

	NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
	NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,

	NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,

	NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
	NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,

	NVSP_MSG2_MAX = NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,

	/* Version 4 messages */
	NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION,
	NVSP_MSG4_TYPE_SWITCH_DATA_PATH,
	NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,

	NVSP_MSG4_MAX = NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,

	/* Version 5 messages */
	NVSP_MSG5_TYPE_OID_QUERY_EX,
	NVSP_MSG5_TYPE_OID_QUERY_EX_COMP,
	NVSP_MSG5_TYPE_SUBCHANNEL,
	NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,

	NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,

	/* Version 6 messages */
	NVSP_MSG6_TYPE_PD_API,
	NVSP_MSG6_TYPE_PD_POST_BATCH,

	NVSP_MSG6_MAX = NVSP_MSG6_TYPE_PD_POST_BATCH
};

enum {
	NVSP_STAT_NONE = 0,
	NVSP_STAT_SUCCESS,
	NVSP_STAT_FAIL,
	NVSP_STAT_PROTOCOL_TOO_NEW,
	NVSP_STAT_PROTOCOL_TOO_OLD,
	NVSP_STAT_INVALID_RNDIS_PKT,
	NVSP_STAT_BUSY,
	NVSP_STAT_PROTOCOL_UNSUPPORTED,
	NVSP_STAT_MAX,
};

struct nvsp_message_header {
	u32 msg_type;
};

/* Init Messages */

/*
 * This message is used by the VSC to initialize the channel after the channels
 * has been opened. This message should never include anything other then
 * versioning (i.e. this message will be the same for ever).
 */
struct nvsp_message_init {
	u32 min_protocol_ver;
	u32 max_protocol_ver;
} __packed;

/*
 * This message is used by the VSP to complete the initialization of the
 * channel. This message should never include anything other then versioning
 * (i.e. this message will be the same for ever).
 */
struct nvsp_message_init_complete {
	u32 negotiated_protocol_ver;
	u32 max_mdl_chain_len;
	u32 status;
} __packed;

union nvsp_message_init_uber {
	struct nvsp_message_init init;
	struct nvsp_message_init_complete init_complete;
} __packed;

/* Version 1 Messages */

/*
 * This message is used by the VSC to send the NDIS version to the VSP. The VSP
 * can use this information when handling OIDs sent by the VSC.
 */
struct nvsp_1_message_send_ndis_version {
	u32 ndis_major_ver;
	u32 ndis_minor_ver;
} __packed;

/*
 * This message is used by the VSC to send a receive buffer to the VSP. The VSP
 * can then use the receive buffer to send data to the VSC.
 */
struct nvsp_1_message_send_receive_buffer {
	u32 gpadl_handle;
	u16 id;
} __packed;

struct nvsp_1_receive_buffer_section {
	u32 offset;
	u32 sub_alloc_size;
	u32 num_sub_allocs;
	u32 end_offset;
} __packed;

/*
 * This message is used by the VSP to acknowledge a receive buffer send by the
 * VSC. This message must be sent by the VSP before the VSP uses the receive
 * buffer.
 */
struct nvsp_1_message_send_receive_buffer_complete {
	u32 status;
	u32 num_sections;

	/*
	 * The receive buffer is split into two parts, a large suballocation
	 * section and a small suballocation section. These sections are then
	 * suballocated by a certain size.
	 */

	/*
	 * For example, the following break up of the receive buffer has 6
	 * large suballocations and 10 small suballocations.
	 */

	/*
	 * |            Large Section          |  |   Small Section   |
	 * ------------------------------------------------------------
	 * |     |     |     |     |     |     |  | | | | | | | | | | |
	 * |                                      |
	 *  LargeOffset                            SmallOffset
	 */

	struct nvsp_1_receive_buffer_section sections[1];
} __packed;

/*
 * This message is sent by the VSC to revoke the receive buffer.  After the VSP
 * completes this transaction, the vsp should never use the receive buffer
 * again.
 */
struct nvsp_1_message_revoke_receive_buffer {
	u16 id;
};

/*
 * This message is used by the VSC to send a send buffer to the VSP. The VSC
 * can then use the send buffer to send data to the VSP.
 */
struct nvsp_1_message_send_send_buffer {
	u32 gpadl_handle;
	u16 id;
} __packed;

/*
 * This message is used by the VSP to acknowledge a send buffer sent by the
 * VSC. This message must be sent by the VSP before the VSP uses the sent
 * buffer.
 */
struct nvsp_1_message_send_send_buffer_complete {
	u32 status;

	/*
	 * The VSC gets to choose the size of the send buffer and the VSP gets
	 * to choose the sections size of the buffer.  This was done to enable
	 * dynamic reconfigurations when the cost of GPA-direct buffers
	 * decreases.
	 */
	u32 section_size;
} __packed;

/*
 * This message is sent by the VSC to revoke the send buffer.  After the VSP
 * completes this transaction, the vsp should never use the send buffer again.
 */
struct nvsp_1_message_revoke_send_buffer {
	u16 id;
};

/*
 * This message is used by both the VSP and the VSC to send a RNDIS message to
 * the opposite channel endpoint.
 */
struct nvsp_1_message_send_rndis_packet {
	/*
	 * This field is specified by RNDIS. They assume there's two different
	 * channels of communication. However, the Network VSP only has one.
	 * Therefore, the channel travels with the RNDIS packet.
	 */
	u32 channel_type;

	/*
	 * This field is used to send part or all of the data through a send
	 * buffer. This values specifies an index into the send buffer. If the
	 * index is 0xFFFFFFFF, then the send buffer is not being used and all
	 * of the data was sent through other VMBus mechanisms.
	 */
	u32 send_buf_section_index;
	u32 send_buf_section_size;
} __packed;

/*
 * This message is used by both the VSP and the VSC to complete a RNDIS message
 * to the opposite channel endpoint. At this point, the initiator of this
 * message cannot use any resources associated with the original RNDIS packet.
 */
struct nvsp_1_message_send_rndis_packet_complete {
	u32 status;
};

union nvsp_1_message_uber {
	struct nvsp_1_message_send_ndis_version send_ndis_ver;

	struct nvsp_1_message_send_receive_buffer send_recv_buf;
	struct nvsp_1_message_send_receive_buffer_complete
						send_recv_buf_complete;
	struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;

	struct nvsp_1_message_send_send_buffer send_send_buf;
	struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
	struct nvsp_1_message_revoke_send_buffer revoke_send_buf;

	struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
	struct nvsp_1_message_send_rndis_packet_complete
						send_rndis_pkt_complete;
} __packed;


/*
 * Network VSP protocol version 2 messages:
 */
struct nvsp_2_vsc_capability {
	union {
		u64 data;
		struct {
			u64 vmq:1;
			u64 chimney:1;
			u64 sriov:1;
			u64 ieee8021q:1;
			u64 correlation_id:1;
			u64 teaming:1;
			u64 vsubnetid:1;
			u64 rsc:1;
		};
	};
} __packed;

struct nvsp_2_send_ndis_config {
	u32 mtu;
	u32 reserved;
	struct nvsp_2_vsc_capability capability;
} __packed;

/* Allocate receive buffer */
struct nvsp_2_alloc_rxbuf {
	/* Allocation ID to match the allocation request and response */
	u32 alloc_id;

	/* Length of the VM shared memory receive buffer that needs to
	 * be allocated
	 */
	u32 len;
} __packed;

/* Allocate receive buffer complete */
struct nvsp_2_alloc_rxbuf_comp {
	/* The NDIS_STATUS code for buffer allocation */
	u32 status;

	u32 alloc_id;

	/* GPADL handle for the allocated receive buffer */
	u32 gpadl_handle;

	/* Receive buffer ID */
	u64 recv_buf_id;
} __packed;

struct nvsp_2_free_rxbuf {
	u64 recv_buf_id;
} __packed;

union nvsp_2_message_uber {
	struct nvsp_2_send_ndis_config send_ndis_config;
	struct nvsp_2_alloc_rxbuf alloc_rxbuf;
	struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
	struct nvsp_2_free_rxbuf free_rxbuf;
} __packed;

struct nvsp_4_send_vf_association {
	/* 1: allocated, serial number is valid. 0: not allocated */
	u32 allocated;

	/* Serial number of the VF to team with */
	u32 serial;
} __packed;

enum nvsp_vm_datapath {
	NVSP_DATAPATH_SYNTHETIC = 0,
	NVSP_DATAPATH_VF,
	NVSP_DATAPATH_MAX
};

struct nvsp_4_sw_datapath {
	u32 active_datapath; /* active data path in VM */
} __packed;

union nvsp_4_message_uber {
	struct nvsp_4_send_vf_association vf_assoc;
	struct nvsp_4_sw_datapath active_dp;
} __packed;

enum nvsp_subchannel_operation {
	NVSP_SUBCHANNEL_NONE = 0,
	NVSP_SUBCHANNEL_ALLOCATE,
	NVSP_SUBCHANNEL_MAX
};

struct nvsp_5_subchannel_request {
	u32 op;
	u32 num_subchannels;
} __packed;

struct nvsp_5_subchannel_complete {
	u32 status;
	u32 num_subchannels; /* Actual number of subchannels allocated */
} __packed;

struct nvsp_5_send_indirect_table {
	/* The number of entries in the send indirection table */
	u32 count;

	/* The offset of the send indirection table from top of this struct.
	 * The send indirection table tells which channel to put the send
	 * traffic on. Each entry is a channel number.
	 */
	u32 offset;
} __packed;

union nvsp_5_message_uber {
	struct nvsp_5_subchannel_request subchn_req;
	struct nvsp_5_subchannel_complete subchn_comp;
	struct nvsp_5_send_indirect_table send_table;
} __packed;

enum nvsp_6_pd_api_op {
	PD_API_OP_CONFIG = 1,
	PD_API_OP_SW_DATAPATH, /* Switch Datapath */
	PD_API_OP_OPEN_PROVIDER,
	PD_API_OP_CLOSE_PROVIDER,
	PD_API_OP_CREATE_QUEUE,
	PD_API_OP_FLUSH_QUEUE,
	PD_API_OP_FREE_QUEUE,
	PD_API_OP_ALLOC_COM_BUF, /* Allocate Common Buffer */
	PD_API_OP_FREE_COM_BUF, /* Free Common Buffer */
	PD_API_OP_MAX
};

struct grp_affinity {
	u64 mask;
	u16 grp;
	u16 reserved[3];
} __packed;

struct nvsp_6_pd_api_req {
	u32 op;

	union {
		/* MMIO information is sent from the VM to VSP */
		struct __packed {
			u64 mmio_pa; /* MMIO Physical Address */
			u32 mmio_len;

			/* Number of PD queues a VM can support */
			u16 num_subchn;
		} config;

		/* Switch Datapath */
		struct __packed {
			/* Host Datapath Is PacketDirect */
			u8 host_dpath_is_pd;

			/* Guest PacketDirect Is Enabled */
			u8 guest_pd_enabled;
		} sw_dpath;

		/* Open Provider*/
		struct __packed {
			u32 prov_id; /* Provider id */
			u32 flag;
		} open_prov;

		/* Close Provider */
		struct __packed {
			u32 prov_id;
		} cls_prov;

		/* Create Queue*/
		struct __packed {
			u32 prov_id;
			u16 q_id;
			u16 q_size;
			u8 is_recv_q;
			u8 is_rss_q;
			u32 recv_data_len;
			struct grp_affinity affy;
		} cr_q;

		/* Delete Queue*/
		struct __packed {
			u32 prov_id;
			u16 q_id;
		} del_q;

		/* Flush Queue */
		struct __packed {
			u32 prov_id;
			u16 q_id;
		} flush_q;

		/* Allocate Common Buffer */
		struct __packed {
			u32 len;
			u32 pf_node; /* Preferred Node */
			u16 region_id;
		} alloc_com_buf;

		/* Free Common Buffer */
		struct __packed {
			u32 len;
			u64 pa; /* Physical Address */
			u32 pf_node; /* Preferred Node */
			u16 region_id;
			u8 cache_type;
		} free_com_buf;
	} __packed;
} __packed;

struct nvsp_6_pd_api_comp {
	u32 op;
	u32 status;

	union {
		struct __packed {
			/* actual number of PD queues allocated to the VM */
			u16 num_pd_q;

			/* Num Receive Rss PD Queues */
			u8 num_rss_q;

			u8 is_supported; /* Is supported by VSP */
			u8 is_enabled; /* Is enabled by VSP */
		} config;

		/* Open Provider */
		struct __packed {
			u32 prov_id;
		} open_prov;

		/* Create Queue */
		struct __packed {
			u32 prov_id;
			u16 q_id;
			u16 q_size;
			u32 recv_data_len;
			struct grp_affinity affy;
		} cr_q;

		/* Allocate Common Buffer */
		struct __packed {
			u64 pa; /* Physical Address */
			u32 len;
			u32 pf_node; /* Preferred Node */
			u16 region_id;
			u8 cache_type;
		} alloc_com_buf;
	} __packed;
} __packed;

struct nvsp_6_pd_buf {
	u32 region_offset;
	u16 region_id;
	u16 is_partial:1;
	u16 reserved:15;
} __packed;

struct nvsp_6_pd_batch_msg {
	struct nvsp_message_header hdr;
	u16 count;
	u16 guest2host:1;
	u16 is_recv:1;
	u16 reserved:14;
	struct nvsp_6_pd_buf pd_buf[0];
} __packed;

union nvsp_6_message_uber {
	struct nvsp_6_pd_api_req pd_req;
	struct nvsp_6_pd_api_comp pd_comp;
} __packed;

union nvsp_all_messages {
	union nvsp_message_init_uber init_msg;
	union nvsp_1_message_uber v1_msg;
	union nvsp_2_message_uber v2_msg;
	union nvsp_4_message_uber v4_msg;
	union nvsp_5_message_uber v5_msg;
	union nvsp_6_message_uber v6_msg;
} __packed;

/* ALL Messages */
struct nvsp_message {
	struct nvsp_message_header hdr;
	union nvsp_all_messages msg;
} __packed;


#define NETVSC_MTU 65535
#define NETVSC_MTU_MIN ETH_MIN_MTU

/* Max buffer sizes allowed by a host */
#define NETVSC_RECEIVE_BUFFER_SIZE		(1024 * 1024 * 31) /* 31MB */
#define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY	(1024 * 1024 * 15) /* 15MB */
#define NETVSC_RECEIVE_BUFFER_DEFAULT		(1024 * 1024 * 16)

#define NETVSC_SEND_BUFFER_SIZE			(1024 * 1024 * 15)  /* 15MB */
#define NETVSC_SEND_BUFFER_DEFAULT		(1024 * 1024)

#define NETVSC_INVALID_INDEX			-1

#define NETVSC_SEND_SECTION_SIZE		6144
#define NETVSC_RECV_SECTION_SIZE		1728

/* Default size of TX buf: 1MB, RX buf: 16MB */
#define NETVSC_MIN_TX_SECTIONS	10
#define NETVSC_DEFAULT_TX	(NETVSC_SEND_BUFFER_DEFAULT \
				 / NETVSC_SEND_SECTION_SIZE)
#define NETVSC_MIN_RX_SECTIONS	10
#define NETVSC_DEFAULT_RX	(NETVSC_RECEIVE_BUFFER_DEFAULT \
				 / NETVSC_RECV_SECTION_SIZE)

#define NETVSC_RECEIVE_BUFFER_ID		0xcafe
#define NETVSC_SEND_BUFFER_ID			0

#define NETVSC_SUPPORTED_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | \
				      NETIF_F_TSO | NETIF_F_IPV6_CSUM | \
				      NETIF_F_TSO6 | NETIF_F_LRO | NETIF_F_SG)

#define VRSS_SEND_TAB_SIZE 16  /* must be power of 2 */
#define VRSS_CHANNEL_MAX 64
#define VRSS_CHANNEL_DEFAULT 8

#define RNDIS_MAX_PKT_DEFAULT 8
#define RNDIS_PKT_ALIGN_DEFAULT 8

struct multi_send_data {
	struct sk_buff *skb; /* skb containing the pkt */
	struct hv_netvsc_packet *pkt; /* netvsc pkt pending */
	u32 count; /* counter of batched packets */
};

struct recv_comp_data {
	u64 tid; /* transaction id */
	u32 status;
};

struct multi_recv_comp {
	struct recv_comp_data *slots;
	u32 first;	/* first data entry */
	u32 next;	/* next entry for writing */
};

#define NVSP_RSC_MAX 562 /* Max #RSC frags in a vmbus xfer page pkt */

struct nvsc_rsc {
	const struct ndis_pkt_8021q_info *vlan;
	const struct ndis_tcp_ip_checksum_info *csum_info;
	u8 is_last; /* last RNDIS msg in a vmtransfer_page */
	u32 cnt; /* #fragments in an RSC packet */
	u32 pktlen; /* Full packet length */
	void *data[NVSP_RSC_MAX];
	u32 len[NVSP_RSC_MAX];
};

struct netvsc_stats {
	u64 packets;
	u64 bytes;
	u64 broadcast;
	u64 multicast;
	struct u64_stats_sync syncp;
};

struct netvsc_ethtool_stats {
	unsigned long tx_scattered;
	unsigned long tx_no_memory;
	unsigned long tx_no_space;
	unsigned long tx_too_big;
	unsigned long tx_busy;
	unsigned long tx_send_full;
	unsigned long rx_comp_busy;
	unsigned long rx_no_memory;
	unsigned long stop_queue;
	unsigned long wake_queue;
};

struct netvsc_ethtool_pcpu_stats {
	u64     rx_packets;
	u64     rx_bytes;
	u64     tx_packets;
	u64     tx_bytes;
	u64     vf_rx_packets;
	u64     vf_rx_bytes;
	u64     vf_tx_packets;
	u64     vf_tx_bytes;
};

struct netvsc_vf_pcpu_stats {
	u64     rx_packets;
	u64     rx_bytes;
	u64     tx_packets;
	u64     tx_bytes;
	struct u64_stats_sync   syncp;
	u32	tx_dropped;
};

struct netvsc_reconfig {
	struct list_head list;
	u32 event;
};

/* L4 hash bits for different protocols */
#define HV_TCP4_L4HASH 1
#define HV_TCP6_L4HASH 2
#define HV_UDP4_L4HASH 4
#define HV_UDP6_L4HASH 8
#define HV_DEFAULT_L4HASH (HV_TCP4_L4HASH | HV_TCP6_L4HASH | HV_UDP4_L4HASH | \
			   HV_UDP6_L4HASH)

/* The context of the netvsc device  */
struct net_device_context {
	/* point back to our device context */
	struct hv_device *device_ctx;
	/* netvsc_device */
	struct netvsc_device __rcu *nvdev;
	/* list of netvsc net_devices */
	struct list_head list;
	/* reconfigure work */
	struct delayed_work dwork;
	/* last reconfig time */
	unsigned long last_reconfig;
	/* reconfig events */
	struct list_head reconfig_events;
	/* list protection */
	spinlock_t lock;

	u32 msg_enable; /* debug level */

	u32 tx_checksum_mask;

	u32 tx_table[VRSS_SEND_TAB_SIZE];

	/* Ethtool settings */
	u8 duplex;
	u32 speed;
	u32 l4_hash; /* L4 hash settings */
	struct netvsc_ethtool_stats eth_stats;

	/* State to manage the associated VF interface. */
	struct net_device __rcu *vf_netdev;
	struct netvsc_vf_pcpu_stats __percpu *vf_stats;
	struct delayed_work vf_takeover;

	/* 1: allocated, serial number is valid. 0: not allocated */
	u32 vf_alloc;
	/* Serial number of the VF to team with */
	u32 vf_serial;
};

/* Per channel data */
struct netvsc_channel {
	struct vmbus_channel *channel;
	struct netvsc_device *net_device;
	const struct vmpacket_descriptor *desc;
	struct napi_struct napi;
	struct multi_send_data msd;
	struct multi_recv_comp mrc;
	atomic_t queue_sends;
	struct nvsc_rsc rsc;

	struct netvsc_stats tx_stats;
	struct netvsc_stats rx_stats;
};

/* Per netvsc device */
struct netvsc_device {
	u32 nvsp_version;

	wait_queue_head_t wait_drain;
	bool destroy;
	bool tx_disable; /* if true, do not wake up queue again */

	/* Receive buffer allocated by us but manages by NetVSP */
	void *recv_buf;
	u32 recv_buf_size; /* allocated bytes */
	u32 recv_buf_gpadl_handle;
	u32 recv_section_cnt;
	u32 recv_section_size;
	u32 recv_completion_cnt;

	/* Send buffer allocated by us */
	void *send_buf;
	u32 send_buf_gpadl_handle;
	u32 send_section_cnt;
	u32 send_section_size;
	unsigned long *send_section_map;

	/* Used for NetVSP initialization protocol */
	struct completion channel_init_wait;
	struct nvsp_message channel_init_pkt;

	struct nvsp_message revoke_packet;

	u32 max_chn;
	u32 num_chn;

	atomic_t open_chn;
	struct work_struct subchan_work;
	wait_queue_head_t subchan_open;

	struct rndis_device *extension;

	u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
	u32 pkt_align; /* alignment bytes, e.g. 8 */

	struct netvsc_channel chan_table[VRSS_CHANNEL_MAX];

	struct rcu_head rcu;
};

/* NdisInitialize message */
struct rndis_initialize_request {
	u32 req_id;
	u32 major_ver;
	u32 minor_ver;
	u32 max_xfer_size;
};

/* Response to NdisInitialize */
struct rndis_initialize_complete {
	u32 req_id;
	u32 status;
	u32 major_ver;
	u32 minor_ver;
	u32 dev_flags;
	u32 medium;
	u32 max_pkt_per_msg;
	u32 max_xfer_size;
	u32 pkt_alignment_factor;
	u32 af_list_offset;
	u32 af_list_size;
};

/* Call manager devices only: Information about an address family */
/* supported by the device is appended to the response to NdisInitialize. */
struct rndis_co_address_family {
	u32 address_family;
	u32 major_ver;
	u32 minor_ver;
};

/* NdisHalt message */
struct rndis_halt_request {
	u32 req_id;
};

/* NdisQueryRequest message */
struct rndis_query_request {
	u32 req_id;
	u32 oid;
	u32 info_buflen;
	u32 info_buf_offset;
	u32 dev_vc_handle;
};

/* Response to NdisQueryRequest */
struct rndis_query_complete {
	u32 req_id;
	u32 status;
	u32 info_buflen;
	u32 info_buf_offset;
};

/* NdisSetRequest message */
struct rndis_set_request {
	u32 req_id;
	u32 oid;
	u32 info_buflen;
	u32 info_buf_offset;
	u32 dev_vc_handle;
};

/* Response to NdisSetRequest */
struct rndis_set_complete {
	u32 req_id;
	u32 status;
};

/* NdisReset message */
struct rndis_reset_request {
	u32 reserved;
};

/* Response to NdisReset */
struct rndis_reset_complete {
	u32 status;
	u32 addressing_reset;
};

/* NdisMIndicateStatus message */
struct rndis_indicate_status {
	u32 status;
	u32 status_buflen;
	u32 status_buf_offset;
};

/* Diagnostic information passed as the status buffer in */
/* struct rndis_indicate_status messages signifying error conditions. */
struct rndis_diagnostic_info {
	u32 diag_status;
	u32 error_offset;
};

/* NdisKeepAlive message */
struct rndis_keepalive_request {
	u32 req_id;
};

/* Response to NdisKeepAlive */
struct rndis_keepalive_complete {
	u32 req_id;
	u32 status;
};

/*
 * Data message. All Offset fields contain byte offsets from the beginning of
 * struct rndis_packet. All Length fields are in bytes.  VcHandle is set
 * to 0 for connectionless data, otherwise it contains the VC handle.
 */
struct rndis_packet {
	u32 data_offset;
	u32 data_len;
	u32 oob_data_offset;
	u32 oob_data_len;
	u32 num_oob_data_elements;
	u32 per_pkt_info_offset;
	u32 per_pkt_info_len;
	u32 vc_handle;
	u32 reserved;
};

/* Optional Out of Band data associated with a Data message. */
struct rndis_oobd {
	u32 size;
	u32 type;
	u32 class_info_offset;
};

/* Packet extension field contents associated with a Data message. */
struct rndis_per_packet_info {
	u32 size;
	u32 type:31;
	u32 internal:1;
	u32 ppi_offset;
};

enum ndis_per_pkt_info_type {
	TCPIP_CHKSUM_PKTINFO,
	IPSEC_PKTINFO,
	TCP_LARGESEND_PKTINFO,
	CLASSIFICATION_HANDLE_PKTINFO,
	NDIS_RESERVED,
	SG_LIST_PKTINFO,
	IEEE_8021Q_INFO,
	ORIGINAL_PKTINFO,
	PACKET_CANCEL_ID,
	NBL_HASH_VALUE = PACKET_CANCEL_ID,
	ORIGINAL_NET_BUFLIST,
	CACHED_NET_BUFLIST,
	SHORT_PKT_PADINFO,
	MAX_PER_PKT_INFO
};

enum rndis_per_pkt_info_interal_type {
	RNDIS_PKTINFO_ID = 1,
	/* Add more members here */

	RNDIS_PKTINFO_MAX
};

#define RNDIS_PKTINFO_SUBALLOC BIT(0)
#define RNDIS_PKTINFO_1ST_FRAG BIT(1)
#define RNDIS_PKTINFO_LAST_FRAG BIT(2)

#define RNDIS_PKTINFO_ID_V1 1

struct rndis_pktinfo_id {
	u8 ver;
	u8 flag;
	u16 pkt_id;
};

struct ndis_pkt_8021q_info {
	union {
		struct {
			u32 pri:3; /* User Priority */
			u32 cfi:1; /* Canonical Format ID */
			u32 vlanid:12; /* VLAN ID */
			u32 reserved:16;
		};
		u32 value;
	};
};

struct ndis_object_header {
	u8 type;
	u8 revision;
	u16 size;
};

#define NDIS_OBJECT_TYPE_DEFAULT	0x80
#define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3
#define NDIS_OFFLOAD_PARAMETERS_REVISION_2 2
#define NDIS_OFFLOAD_PARAMETERS_REVISION_1 1

#define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0
#define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1
#define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED  2
#define NDIS_OFFLOAD_PARAMETERS_LSOV1_ENABLED  2
#define NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED 1
#define NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED 2
#define NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED 1
#define NDIS_OFFLOAD_PARAMETERS_TX_ENABLED_RX_DISABLED 2
#define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
#define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4

#define NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE	1
#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4	0
#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6	1

#define VERSION_4_OFFLOAD_SIZE			22
/*
 * New offload OIDs for NDIS 6
 */
#define OID_TCP_OFFLOAD_CURRENT_CONFIG 0xFC01020B /* query only */
#define OID_TCP_OFFLOAD_PARAMETERS 0xFC01020C		/* set only */
#define OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020D/* query only */
#define OID_TCP_CONNECTION_OFFLOAD_CURRENT_CONFIG 0xFC01020E /* query only */
#define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */
#define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */

/*
 * OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES
 * ndis_type: NDIS_OBJTYPE_OFFLOAD
 */

#define	NDIS_OFFLOAD_ENCAP_NONE		0x0000
#define	NDIS_OFFLOAD_ENCAP_NULL		0x0001
#define	NDIS_OFFLOAD_ENCAP_8023		0x0002
#define	NDIS_OFFLOAD_ENCAP_8023PQ	0x0004
#define	NDIS_OFFLOAD_ENCAP_8023PQ_OOB	0x0008
#define	NDIS_OFFLOAD_ENCAP_RFC1483	0x0010

struct ndis_csum_offload {
	u32	ip4_txenc;
	u32	ip4_txcsum;
#define	NDIS_TXCSUM_CAP_IP4OPT		0x001
#define	NDIS_TXCSUM_CAP_TCP4OPT		0x004
#define	NDIS_TXCSUM_CAP_TCP4		0x010
#define	NDIS_TXCSUM_CAP_UDP4		0x040
#define	NDIS_TXCSUM_CAP_IP4		0x100

#define NDIS_TXCSUM_ALL_TCP4	(NDIS_TXCSUM_CAP_TCP4 | NDIS_TXCSUM_CAP_TCP4OPT)

	u32	ip4_rxenc;
	u32	ip4_rxcsum;
#define	NDIS_RXCSUM_CAP_IP4OPT		0x001
#define	NDIS_RXCSUM_CAP_TCP4OPT		0x004
#define	NDIS_RXCSUM_CAP_TCP4		0x010
#define	NDIS_RXCSUM_CAP_UDP4		0x040
#define	NDIS_RXCSUM_CAP_IP4		0x100
	u32	ip6_txenc;
	u32	ip6_txcsum;
#define	NDIS_TXCSUM_CAP_IP6EXT		0x001
#define	NDIS_TXCSUM_CAP_TCP6OPT		0x004
#define	NDIS_TXCSUM_CAP_TCP6		0x010
#define	NDIS_TXCSUM_CAP_UDP6		0x040
	u32	ip6_rxenc;
	u32	ip6_rxcsum;
#define	NDIS_RXCSUM_CAP_IP6EXT		0x001
#define	NDIS_RXCSUM_CAP_TCP6OPT		0x004
#define	NDIS_RXCSUM_CAP_TCP6		0x010
#define	NDIS_RXCSUM_CAP_UDP6		0x040

#define NDIS_TXCSUM_ALL_TCP6	(NDIS_TXCSUM_CAP_TCP6 |		\
				 NDIS_TXCSUM_CAP_TCP6OPT |	\
				 NDIS_TXCSUM_CAP_IP6EXT)
};

struct ndis_lsov1_offload {
	u32	encap;
	u32	maxsize;
	u32	minsegs;
	u32	opts;
};

struct ndis_ipsecv1_offload {
	u32	encap;
	u32	ah_esp;
	u32	xport_tun;
	u32	ip4_opts;
	u32	flags;
	u32	ip4_ah;
	u32	ip4_esp;
};

struct ndis_lsov2_offload {
	u32	ip4_encap;
	u32	ip4_maxsz;
	u32	ip4_minsg;
	u32	ip6_encap;
	u32	ip6_maxsz;
	u32	ip6_minsg;
	u32	ip6_opts;
#define	NDIS_LSOV2_CAP_IP6EXT		0x001
#define	NDIS_LSOV2_CAP_TCP6OPT		0x004

#define NDIS_LSOV2_CAP_IP6		(NDIS_LSOV2_CAP_IP6EXT | \
					 NDIS_LSOV2_CAP_TCP6OPT)
};

struct ndis_ipsecv2_offload {
	u32	encap;
	u8	ip6;
	u8	ip4opt;
	u8	ip6ext;
	u8	ah;
	u8	esp;
	u8	ah_esp;
	u8	xport;
	u8	tun;
	u8	xport_tun;
	u8	lso;
	u8	extseq;
	u32	udp_esp;
	u32	auth;
	u32	crypto;
	u32	sa_caps;
};

struct ndis_rsc_offload {
	u8	ip4;
	u8	ip6;
};

struct ndis_encap_offload {
	u32	flags;
	u32	maxhdr;
};

struct ndis_offload {
	struct ndis_object_header	header;
	struct ndis_csum_offload	csum;
	struct ndis_lsov1_offload	lsov1;
	struct ndis_ipsecv1_offload	ipsecv1;
	struct ndis_lsov2_offload	lsov2;
	u32				flags;
	/* NDIS >= 6.1 */
	struct ndis_ipsecv2_offload	ipsecv2;
	/* NDIS >= 6.30 */
	struct ndis_rsc_offload		rsc;
	struct ndis_encap_offload	encap_gre;
};

#define	NDIS_OFFLOAD_SIZE		sizeof(struct ndis_offload)
#define	NDIS_OFFLOAD_SIZE_6_0		offsetof(struct ndis_offload, ipsecv2)
#define	NDIS_OFFLOAD_SIZE_6_1		offsetof(struct ndis_offload, rsc)

struct ndis_offload_params {
	struct ndis_object_header header;
	u8 ip_v4_csum;
	u8 tcp_ip_v4_csum;
	u8 udp_ip_v4_csum;
	u8 tcp_ip_v6_csum;
	u8 udp_ip_v6_csum;
	u8 lso_v1;
	u8 ip_sec_v1;
	u8 lso_v2_ipv4;
	u8 lso_v2_ipv6;
	u8 tcp_connection_ip_v4;
	u8 tcp_connection_ip_v6;
	u32 flags;
	u8 ip_sec_v2;
	u8 ip_sec_v2_ip_v4;
	struct {
		u8 rsc_ip_v4;
		u8 rsc_ip_v6;
	};
	struct {
		u8 encapsulated_packet_task_offload;
		u8 encapsulation_types;
	};
};

struct ndis_tcp_ip_checksum_info {
	union {
		struct {
			u32 is_ipv4:1;
			u32 is_ipv6:1;
			u32 tcp_checksum:1;
			u32 udp_checksum:1;
			u32 ip_header_checksum:1;
			u32 reserved:11;
			u32 tcp_header_offset:10;
		} transmit;
		struct {
			u32 tcp_checksum_failed:1;
			u32 udp_checksum_failed:1;
			u32 ip_checksum_failed:1;
			u32 tcp_checksum_succeeded:1;
			u32 udp_checksum_succeeded:1;
			u32 ip_checksum_succeeded:1;
			u32 loopback:1;
			u32 tcp_checksum_value_invalid:1;
			u32 ip_checksum_value_invalid:1;
		} receive;
		u32  value;
	};
};

struct ndis_tcp_lso_info {
	union {
		struct {
			u32 unused:30;
			u32 type:1;
			u32 reserved2:1;
		} transmit;
		struct {
			u32 mss:20;
			u32 tcp_header_offset:10;
			u32 type:1;
			u32 reserved2:1;
		} lso_v1_transmit;
		struct {
			u32 tcp_payload:30;
			u32 type:1;
			u32 reserved2:1;
		} lso_v1_transmit_complete;
		struct {
			u32 mss:20;
			u32 tcp_header_offset:10;
			u32 type:1;
			u32 ip_version:1;
		} lso_v2_transmit;
		struct {
			u32 reserved:30;
			u32 type:1;
			u32 reserved2:1;
		} lso_v2_transmit_complete;
		u32  value;
	};
};

#define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
		sizeof(struct ndis_pkt_8021q_info))

#define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
		sizeof(struct ndis_tcp_ip_checksum_info))

#define NDIS_LSO_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
		sizeof(struct ndis_tcp_lso_info))

#define NDIS_HASH_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
		sizeof(u32))

/* Total size of all PPI data */
#define NDIS_ALL_PPI_SIZE (NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE + \
			   NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE)

/* Format of Information buffer passed in a SetRequest for the OID */
/* OID_GEN_RNDIS_CONFIG_PARAMETER. */
struct rndis_config_parameter_info {
	u32 parameter_name_offset;
	u32 parameter_name_length;
	u32 parameter_type;
	u32 parameter_value_offset;
	u32 parameter_value_length;
};

/* Values for ParameterType in struct rndis_config_parameter_info */
#define RNDIS_CONFIG_PARAM_TYPE_INTEGER     0
#define RNDIS_CONFIG_PARAM_TYPE_STRING      2

/* CONDIS Miniport messages for connection oriented devices */
/* that do not implement a call manager. */

/* CoNdisMiniportCreateVc message */
struct rcondis_mp_create_vc {
	u32 req_id;
	u32 ndis_vc_handle;
};

/* Response to CoNdisMiniportCreateVc */
struct rcondis_mp_create_vc_complete {
	u32 req_id;
	u32 dev_vc_handle;
	u32 status;
};

/* CoNdisMiniportDeleteVc message */
struct rcondis_mp_delete_vc {
	u32 req_id;
	u32 dev_vc_handle;
};

/* Response to CoNdisMiniportDeleteVc */
struct rcondis_mp_delete_vc_complete {
	u32 req_id;
	u32 status;
};

/* CoNdisMiniportQueryRequest message */
struct rcondis_mp_query_request {
	u32 req_id;
	u32 request_type;
	u32 oid;
	u32 dev_vc_handle;
	u32 info_buflen;
	u32 info_buf_offset;
};

/* CoNdisMiniportSetRequest message */
struct rcondis_mp_set_request {
	u32 req_id;
	u32 request_type;
	u32 oid;
	u32 dev_vc_handle;
	u32 info_buflen;
	u32 info_buf_offset;
};

/* CoNdisIndicateStatus message */
struct rcondis_indicate_status {
	u32 ndis_vc_handle;
	u32 status;
	u32 status_buflen;
	u32 status_buf_offset;
};

/* CONDIS Call/VC parameters */
struct rcondis_specific_parameters {
	u32 parameter_type;
	u32 parameter_length;
	u32 parameter_lffset;
};

struct rcondis_media_parameters {
	u32 flags;
	u32 reserved1;
	u32 reserved2;
	struct rcondis_specific_parameters media_specific;
};

struct rndis_flowspec {
	u32 token_rate;
	u32 token_bucket_size;
	u32 peak_bandwidth;
	u32 latency;
	u32 delay_variation;
	u32 service_type;
	u32 max_sdu_size;
	u32 minimum_policed_size;
};

struct rcondis_call_manager_parameters {
	struct rndis_flowspec transmit;
	struct rndis_flowspec receive;
	struct rcondis_specific_parameters call_mgr_specific;
};

/* CoNdisMiniportActivateVc message */
struct rcondis_mp_activate_vc_request {
	u32 req_id;
	u32 flags;
	u32 dev_vc_handle;
	u32 media_params_offset;
	u32 media_params_length;
	u32 call_mgr_params_offset;
	u32 call_mgr_params_length;
};

/* Response to CoNdisMiniportActivateVc */
struct rcondis_mp_activate_vc_complete {
	u32 req_id;
	u32 status;
};

/* CoNdisMiniportDeactivateVc message */
struct rcondis_mp_deactivate_vc_request {
	u32 req_id;
	u32 flags;
	u32 dev_vc_handle;
};

/* Response to CoNdisMiniportDeactivateVc */
struct rcondis_mp_deactivate_vc_complete {
	u32 req_id;
	u32 status;
};


/* union with all of the RNDIS messages */
union rndis_message_container {
	struct rndis_packet pkt;
	struct rndis_initialize_request init_req;
	struct rndis_halt_request halt_req;
	struct rndis_query_request query_req;
	struct rndis_set_request set_req;
	struct rndis_reset_request reset_req;
	struct rndis_keepalive_request keep_alive_req;
	struct rndis_indicate_status indicate_status;
	struct rndis_initialize_complete init_complete;
	struct rndis_query_complete query_complete;
	struct rndis_set_complete set_complete;
	struct rndis_reset_complete reset_complete;
	struct rndis_keepalive_complete keep_alive_complete;
	struct rcondis_mp_create_vc co_miniport_create_vc;
	struct rcondis_mp_delete_vc co_miniport_delete_vc;
	struct rcondis_indicate_status co_indicate_status;
	struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
	struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
	struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
	struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
	struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
	struct rcondis_mp_deactivate_vc_complete
		co_miniport_deactivate_vc_complete;
};

/* Remote NDIS message format */
struct rndis_message {
	u32 ndis_msg_type;

	/* Total length of this message, from the beginning */
	/* of the struct rndis_message, in bytes. */
	u32 msg_len;

	/* Actual message */
	union rndis_message_container msg;
};


/* Handy macros */

/* get the size of an RNDIS message. Pass in the message type, */
/* struct rndis_set_request, struct rndis_packet for example */
#define RNDIS_MESSAGE_SIZE(msg)				\
	(sizeof(msg) + (sizeof(struct rndis_message) -	\
	 sizeof(union rndis_message_container)))

#define RNDIS_HEADER_SIZE	(sizeof(struct rndis_message) - \
				 sizeof(union rndis_message_container))

#define RNDIS_AND_PPI_SIZE (sizeof(struct rndis_message) + NDIS_ALL_PPI_SIZE)

#define NDIS_PACKET_TYPE_DIRECTED	0x00000001
#define NDIS_PACKET_TYPE_MULTICAST	0x00000002
#define NDIS_PACKET_TYPE_ALL_MULTICAST	0x00000004
#define NDIS_PACKET_TYPE_BROADCAST	0x00000008
#define NDIS_PACKET_TYPE_SOURCE_ROUTING	0x00000010
#define NDIS_PACKET_TYPE_PROMISCUOUS	0x00000020
#define NDIS_PACKET_TYPE_SMT		0x00000040
#define NDIS_PACKET_TYPE_ALL_LOCAL	0x00000080
#define NDIS_PACKET_TYPE_GROUP		0x00000100
#define NDIS_PACKET_TYPE_ALL_FUNCTIONAL	0x00000200
#define NDIS_PACKET_TYPE_FUNCTIONAL	0x00000400
#define NDIS_PACKET_TYPE_MAC_FRAME	0x00000800

#define TRANSPORT_INFO_NOT_IP   0
#define TRANSPORT_INFO_IPV4_TCP 0x01
#define TRANSPORT_INFO_IPV4_UDP 0x02
#define TRANSPORT_INFO_IPV6_TCP 0x10
#define TRANSPORT_INFO_IPV6_UDP 0x20

#endif /* _HYPERV_NET_H */