summaryrefslogtreecommitdiffstats
path: root/extensions/libip6t_srh.c
blob: 94db6f1a86676e4dac2c36d22090ab6403c18da2 (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
/* Shared library to add Segment Routing Header (SRH) matching support.
 *
 * Author:
 *       Ahmed Abdelsalam       <amsalam20@gmail.com>
 */

#include <stdio.h>
#include <xtables.h>
#include <linux/netfilter_ipv6/ip6t_srh.h>
#include <string.h>

/* srh command-line options */
enum {
	O_SRH_NEXTHDR,
	O_SRH_LEN_EQ,
	O_SRH_LEN_GT,
	O_SRH_LEN_LT,
	O_SRH_SEGS_EQ,
	O_SRH_SEGS_GT,
	O_SRH_SEGS_LT,
	O_SRH_LAST_EQ,
	O_SRH_LAST_GT,
	O_SRH_LAST_LT,
	O_SRH_TAG,
	O_SRH_PSID,
	O_SRH_NSID,
	O_SRH_LSID,
};

static void srh_help(void)
{
	printf(
"srh match options:\n"
"[!] --srh-next-hdr		next-hdr        Next Header value of SRH\n"
"[!] --srh-hdr-len-eq		hdr_len         Hdr Ext Len value of SRH\n"
"[!] --srh-hdr-len-gt		hdr_len         Hdr Ext Len value of SRH\n"
"[!] --srh-hdr-len-lt		hdr_len         Hdr Ext Len value of SRH\n"
"[!] --srh-segs-left-eq		segs_left       Segments Left value of SRH\n"
"[!] --srh-segs-left-gt		segs_left       Segments Left value of SRH\n"
"[!] --srh-segs-left-lt		segs_left       Segments Left value of SRH\n"
"[!] --srh-last-entry-eq 	last_entry      Last Entry value of SRH\n"
"[!] --srh-last-entry-gt 	last_entry      Last Entry value of SRH\n"
"[!] --srh-last-entry-lt 	last_entry      Last Entry value of SRH\n"
"[!] --srh-tag			tag             Tag value of SRH\n"
"[!] --srh-psid			addr[/mask]	SRH previous SID\n"
"[!] --srh-nsid			addr[/mask]	SRH next SID\n"
"[!] --srh-lsid			addr[/mask]	SRH Last SID\n");
}

#define s struct ip6t_srh
static const struct xt_option_entry srh_opts[] = {
	{ .name = "srh-next-hdr", .id = O_SRH_NEXTHDR, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, next_hdr)},
	{ .name = "srh-hdr-len-eq", .id = O_SRH_LEN_EQ, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
	{ .name = "srh-hdr-len-gt", .id = O_SRH_LEN_GT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
	{ .name = "srh-hdr-len-lt", .id = O_SRH_LEN_LT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
	{ .name = "srh-segs-left-eq", .id = O_SRH_SEGS_EQ, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
	{ .name = "srh-segs-left-gt", .id = O_SRH_SEGS_GT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
	{ .name = "srh-segs-left-lt", .id = O_SRH_SEGS_LT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
	{ .name = "srh-last-entry-eq", .id = O_SRH_LAST_EQ, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
	{ .name = "srh-last-entry-gt", .id = O_SRH_LAST_GT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
	{ .name = "srh-last-entry-lt", .id = O_SRH_LAST_LT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
	{ .name = "srh-tag", .id = O_SRH_TAG, .type = XTTYPE_UINT16,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, tag)},
	{ }
};
#undef s

#define s struct ip6t_srh1
static const struct xt_option_entry srh1_opts[] = {
	{ .name = "srh-next-hdr", .id = O_SRH_NEXTHDR, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, next_hdr)},
	{ .name = "srh-hdr-len-eq", .id = O_SRH_LEN_EQ, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
	{ .name = "srh-hdr-len-gt", .id = O_SRH_LEN_GT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
	{ .name = "srh-hdr-len-lt", .id = O_SRH_LEN_LT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, hdr_len)},
	{ .name = "srh-segs-left-eq", .id = O_SRH_SEGS_EQ, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
	{ .name = "srh-segs-left-gt", .id = O_SRH_SEGS_GT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
	{ .name = "srh-segs-left-lt", .id = O_SRH_SEGS_LT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, segs_left)},
	{ .name = "srh-last-entry-eq", .id = O_SRH_LAST_EQ, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
	{ .name = "srh-last-entry-gt", .id = O_SRH_LAST_GT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
	{ .name = "srh-last-entry-lt", .id = O_SRH_LAST_LT, .type = XTTYPE_UINT8,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, last_entry)},
	{ .name = "srh-tag", .id = O_SRH_TAG, .type = XTTYPE_UINT16,
	.flags = XTOPT_INVERT | XTOPT_PUT, XTOPT_POINTER(s, tag)},
	{ .name = "srh-psid", .id = O_SRH_PSID, .type = XTTYPE_HOSTMASK,
	.flags = XTOPT_INVERT},
	{ .name = "srh-nsid", .id = O_SRH_NSID, .type = XTTYPE_HOSTMASK,
	.flags = XTOPT_INVERT},
	{ .name = "srh-lsid", .id = O_SRH_LSID, .type = XTTYPE_HOSTMASK,
	.flags = XTOPT_INVERT},
	{ }
};
#undef s

static void srh_init(struct xt_entry_match *m)
{
	struct ip6t_srh *srhinfo = (void *)m->data;

	srhinfo->mt_flags = 0;
	srhinfo->mt_invflags = 0;
}

static void srh1_init(struct xt_entry_match *m)
{
	struct ip6t_srh1 *srhinfo = (void *)m->data;

	srhinfo->mt_flags = 0;
	srhinfo->mt_invflags = 0;
	memset(srhinfo->psid_addr.s6_addr, 0, sizeof(srhinfo->psid_addr.s6_addr));
	memset(srhinfo->nsid_addr.s6_addr, 0, sizeof(srhinfo->nsid_addr.s6_addr));
	memset(srhinfo->lsid_addr.s6_addr, 0, sizeof(srhinfo->lsid_addr.s6_addr));
	memset(srhinfo->psid_msk.s6_addr, 0, sizeof(srhinfo->psid_msk.s6_addr));
	memset(srhinfo->nsid_msk.s6_addr, 0, sizeof(srhinfo->nsid_msk.s6_addr));
	memset(srhinfo->lsid_msk.s6_addr, 0, sizeof(srhinfo->lsid_msk.s6_addr));
}

static void srh_parse(struct xt_option_call *cb)
{
	struct ip6t_srh *srhinfo = cb->data;

	xtables_option_parse(cb);
	switch (cb->entry->id) {
	case O_SRH_NEXTHDR:
		srhinfo->mt_flags |= IP6T_SRH_NEXTHDR;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_NEXTHDR;
		break;
	case O_SRH_LEN_EQ:
		srhinfo->mt_flags |= IP6T_SRH_LEN_EQ;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_EQ;
		break;
	case O_SRH_LEN_GT:
		srhinfo->mt_flags |= IP6T_SRH_LEN_GT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_GT;
		break;
	case O_SRH_LEN_LT:
		srhinfo->mt_flags |= IP6T_SRH_LEN_LT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_LT;
		break;
	case O_SRH_SEGS_EQ:
		srhinfo->mt_flags |= IP6T_SRH_SEGS_EQ;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_EQ;
		break;
	case O_SRH_SEGS_GT:
		srhinfo->mt_flags |= IP6T_SRH_SEGS_GT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_GT;
		break;
	case O_SRH_SEGS_LT:
		srhinfo->mt_flags |= IP6T_SRH_SEGS_LT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_LT;
		break;
	case O_SRH_LAST_EQ:
		srhinfo->mt_flags |= IP6T_SRH_LAST_EQ;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_EQ;
		break;
	case O_SRH_LAST_GT:
		srhinfo->mt_flags |= IP6T_SRH_LAST_GT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_GT;
		break;
	case O_SRH_LAST_LT:
		srhinfo->mt_flags |= IP6T_SRH_LAST_LT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_LT;
		break;
	case O_SRH_TAG:
		srhinfo->mt_flags |= IP6T_SRH_TAG;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_TAG;
		break;
	}
}

static void srh1_parse(struct xt_option_call *cb)
{
	struct ip6t_srh1 *srhinfo = cb->data;

	xtables_option_parse(cb);
	switch (cb->entry->id) {
	case O_SRH_NEXTHDR:
		srhinfo->mt_flags |= IP6T_SRH_NEXTHDR;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_NEXTHDR;
		break;
	case O_SRH_LEN_EQ:
		srhinfo->mt_flags |= IP6T_SRH_LEN_EQ;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_EQ;
		break;
	case O_SRH_LEN_GT:
		srhinfo->mt_flags |= IP6T_SRH_LEN_GT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_GT;
		break;
	case O_SRH_LEN_LT:
		srhinfo->mt_flags |= IP6T_SRH_LEN_LT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LEN_LT;
		break;
	case O_SRH_SEGS_EQ:
		srhinfo->mt_flags |= IP6T_SRH_SEGS_EQ;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_EQ;
		break;
	case O_SRH_SEGS_GT:
		srhinfo->mt_flags |= IP6T_SRH_SEGS_GT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_GT;
		break;
	case O_SRH_SEGS_LT:
		srhinfo->mt_flags |= IP6T_SRH_SEGS_LT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_SEGS_LT;
		break;
	case O_SRH_LAST_EQ:
		srhinfo->mt_flags |= IP6T_SRH_LAST_EQ;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_EQ;
		break;
	case O_SRH_LAST_GT:
		srhinfo->mt_flags |= IP6T_SRH_LAST_GT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_GT;
		break;
	case O_SRH_LAST_LT:
		srhinfo->mt_flags |= IP6T_SRH_LAST_LT;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LAST_LT;
		break;
	case O_SRH_TAG:
		srhinfo->mt_flags |= IP6T_SRH_TAG;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_TAG;
		break;
	case O_SRH_PSID:
		srhinfo->mt_flags |= IP6T_SRH_PSID;
		srhinfo->psid_addr = cb->val.haddr.in6;
		srhinfo->psid_msk  = cb->val.hmask.in6;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_PSID;
		break;
	case O_SRH_NSID:
		srhinfo->mt_flags |= IP6T_SRH_NSID;
		srhinfo->nsid_addr = cb->val.haddr.in6;
		srhinfo->nsid_msk  = cb->val.hmask.in6;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_NSID;
		break;
	case O_SRH_LSID:
		srhinfo->mt_flags |= IP6T_SRH_LSID;
		srhinfo->lsid_addr = cb->val.haddr.in6;
		srhinfo->lsid_msk  = cb->val.hmask.in6;
		if (cb->invert)
			srhinfo->mt_invflags |= IP6T_SRH_INV_LSID;
		break;
	}
}

static void srh_print(const void *ip, const struct xt_entry_match *match,
			int numeric)
{
	const struct ip6t_srh *srhinfo = (struct ip6t_srh *)match->data;

	printf(" srh");
	if (srhinfo->mt_flags & IP6T_SRH_NEXTHDR)
		printf(" next-hdr:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_NEXTHDR ? "!" : "",
			srhinfo->next_hdr);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_EQ)
		printf(" hdr-len-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_EQ ? "!" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_GT)
		printf(" hdr-len-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_GT ? "!" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_LT)
		printf(" hdr-len-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_LT ? "!" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_EQ)
		printf(" segs-left-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_EQ ? "!" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_GT)
		printf(" segs-left-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_GT ? "!" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_LT)
		printf(" segs-left-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_LT ? "!" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_EQ)
		printf(" last-entry-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_EQ ? "!" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_GT)
		printf(" last-entry-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_GT ? "!" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_LT)
		printf(" last-entry-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_LT ? "!" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_TAG)
		printf(" tag:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_TAG ? "!" : "",
			srhinfo->tag);
}

static void srh1_print(const void *ip, const struct xt_entry_match *match, int numeric)
{
	const struct ip6t_srh1 *srhinfo = (struct ip6t_srh1 *)match->data;

	printf(" srh");
	if (srhinfo->mt_flags & IP6T_SRH_NEXTHDR)
		printf(" next-hdr:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_NEXTHDR ? "!" : "",
			srhinfo->next_hdr);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_EQ)
		printf(" hdr-len-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_EQ ? "!" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_GT)
		printf(" hdr-len-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_GT ? "!" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_LT)
		printf(" hdr-len-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LEN_LT ? "!" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_EQ)
		printf(" segs-left-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_EQ ? "!" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_GT)
		printf(" segs-left-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_GT ? "!" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_LT)
		printf(" segs-left-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_LT ? "!" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_EQ)
		printf(" last-entry-eq:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_EQ ? "!" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_GT)
		printf(" last-entry-gt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_GT ? "!" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_LT)
		printf(" last-entry-lt:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_LAST_LT ? "!" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_TAG)
		printf(" tag:%s%d", srhinfo->mt_invflags & IP6T_SRH_INV_TAG ? "!" : "",
			srhinfo->tag);
	if (srhinfo->mt_flags & IP6T_SRH_PSID)
		printf(" psid %s %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_PSID ? "!" : "",
			xtables_ip6addr_to_numeric(&srhinfo->psid_addr),
			xtables_ip6mask_to_cidr(&srhinfo->psid_msk));
	if (srhinfo->mt_flags & IP6T_SRH_NSID)
		printf(" nsid %s %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_NSID ? "!" : "",
			xtables_ip6addr_to_numeric(&srhinfo->nsid_addr),
			xtables_ip6mask_to_cidr(&srhinfo->nsid_msk));
	if (srhinfo->mt_flags & IP6T_SRH_LSID)
		printf(" lsid %s %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_LSID ? "!" : "",
			xtables_ip6addr_to_numeric(&srhinfo->lsid_addr),
			xtables_ip6mask_to_cidr(&srhinfo->lsid_msk));
}

static void srh_save(const void *ip, const struct xt_entry_match *match)
{
	const struct ip6t_srh *srhinfo = (struct ip6t_srh *)match->data;

	if (srhinfo->mt_flags & IP6T_SRH_NEXTHDR)
		printf("%s --srh-next-hdr %u", (srhinfo->mt_invflags & IP6T_SRH_INV_NEXTHDR) ? " !" : "",
			srhinfo->next_hdr);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_EQ)
		printf("%s --srh-hdr-len-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_EQ) ? " !" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_GT)
		printf("%s --srh-hdr-len-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_GT) ? " !" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_LT)
		printf("%s --srh-hdr-len-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_LT) ? " !" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_EQ)
		printf("%s --srh-segs-left-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_EQ) ? " !" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_GT)
		printf("%s --srh-segs-left-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_GT) ? " !" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_LT)
		printf("%s --srh-segs-left-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_LT) ? " !" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_EQ)
		printf("%s --srh-last-entry-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_EQ) ? " !" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_GT)
		printf("%s --srh-last-entry-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_GT) ? " !" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_LT)
		printf("%s --srh-last-entry-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_LT) ? " !" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_TAG)
		printf("%s --srh-tag %u", (srhinfo->mt_invflags & IP6T_SRH_INV_TAG) ? " !" : "",
			srhinfo->tag);
}

static void srh1_save(const void *ip, const struct xt_entry_match *match)
{
	const struct ip6t_srh1 *srhinfo = (struct ip6t_srh1 *)match->data;

	if (srhinfo->mt_flags & IP6T_SRH_NEXTHDR)
		printf("%s --srh-next-hdr %u", (srhinfo->mt_invflags & IP6T_SRH_INV_NEXTHDR) ? " !" : "",
			srhinfo->next_hdr);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_EQ)
		printf("%s --srh-hdr-len-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_EQ) ? " !" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_GT)
		printf("%s --srh-hdr-len-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_GT) ? " !" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_LEN_LT)
		printf("%s --srh-hdr-len-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LEN_LT) ? " !" : "",
			srhinfo->hdr_len);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_EQ)
		printf("%s --srh-segs-left-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_EQ) ? " !" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_GT)
		printf("%s --srh-segs-left-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_GT) ? " !" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_SEGS_LT)
		printf("%s --srh-segs-left-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_SEGS_LT) ? " !" : "",
			srhinfo->segs_left);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_EQ)
		printf("%s --srh-last-entry-eq %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_EQ) ? " !" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_GT)
		printf("%s --srh-last-entry-gt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_GT) ? " !" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_LAST_LT)
		printf("%s --srh-last-entry-lt %u", (srhinfo->mt_invflags & IP6T_SRH_INV_LAST_LT) ? " !" : "",
			srhinfo->last_entry);
	if (srhinfo->mt_flags & IP6T_SRH_TAG)
		printf("%s --srh-tag %u", (srhinfo->mt_invflags & IP6T_SRH_INV_TAG) ? " !" : "",
			srhinfo->tag);
	if (srhinfo->mt_flags & IP6T_SRH_PSID)
		printf("%s --srh-psid %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_PSID ? " !" : "",
			xtables_ip6addr_to_numeric(&srhinfo->psid_addr),
			xtables_ip6mask_to_cidr(&srhinfo->psid_msk));
	if (srhinfo->mt_flags & IP6T_SRH_NSID)
		printf("%s --srh-nsid %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_NSID ? " !" : "",
			xtables_ip6addr_to_numeric(&srhinfo->nsid_addr),
			xtables_ip6mask_to_cidr(&srhinfo->nsid_msk));
	if (srhinfo->mt_flags & IP6T_SRH_LSID)
		printf("%s --srh-lsid %s/%u", srhinfo->mt_invflags & IP6T_SRH_INV_LSID ? " !" : "",
			xtables_ip6addr_to_numeric(&srhinfo->lsid_addr),
			xtables_ip6mask_to_cidr(&srhinfo->lsid_msk));
}

static struct xtables_match srh_mt6_reg[] = {
	{
		.name		= "srh",
		.version	= XTABLES_VERSION,
		.revision	= 0,
		.family		= NFPROTO_IPV6,
		.size		= XT_ALIGN(sizeof(struct ip6t_srh)),
		.userspacesize	= XT_ALIGN(sizeof(struct ip6t_srh)),
		.help		= srh_help,
		.init		= srh_init,
		.print		= srh_print,
		.save		= srh_save,
		.x6_parse	= srh_parse,
		.x6_options	= srh_opts,
	},
	{
		.name		= "srh",
		.version	= XTABLES_VERSION,
		.revision	= 1,
		.family		= NFPROTO_IPV6,
		.size		= XT_ALIGN(sizeof(struct ip6t_srh1)),
		.userspacesize	= XT_ALIGN(sizeof(struct ip6t_srh1)),
		.help		= srh_help,
		.init		= srh1_init,
		.print		= srh1_print,
		.save		= srh1_save,
		.x6_parse	= srh1_parse,
		.x6_options	= srh1_opts,
	}
};

void
_init(void)
{
	xtables_register_matches(srh_mt6_reg, ARRAY_SIZE(srh_mt6_reg));
}