DPDK logo

Elixir Cross Referencer

  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
/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2016 Intel Corporation. All rights reserved.
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Security Policies
 */
#include <sys/types.h>
#include <netinet/in.h>
#include <netinet/ip.h>

#include <rte_acl.h>
#include <rte_ip.h>

#include "ipsec.h"
#include "parser.h"

#define MAX_ACL_RULE_NUM	1024

/*
 * Rule and trace formats definitions.
 */
enum {
	PROTO_FIELD_IPV4,
	SRC_FIELD_IPV4,
	DST_FIELD_IPV4,
	SRCP_FIELD_IPV4,
	DSTP_FIELD_IPV4,
	NUM_FIELDS_IPV4
};

/*
 * That effectively defines order of IPV4 classifications:
 *  - PROTO
 *  - SRC IP ADDRESS
 *  - DST IP ADDRESS
 *  - PORTS (SRC and DST)
 */
enum {
	RTE_ACL_IPV4_PROTO,
	RTE_ACL_IPV4_SRC,
	RTE_ACL_IPV4_DST,
	RTE_ACL_IPV4_PORTS,
	RTE_ACL_IPV4_NUM
};

struct rte_acl_field_def ip4_defs[NUM_FIELDS_IPV4] = {
	{
	.type = RTE_ACL_FIELD_TYPE_BITMASK,
	.size = sizeof(uint8_t),
	.field_index = PROTO_FIELD_IPV4,
	.input_index = RTE_ACL_IPV4_PROTO,
	.offset = 0,
	},
	{
	.type = RTE_ACL_FIELD_TYPE_MASK,
	.size = sizeof(uint32_t),
	.field_index = SRC_FIELD_IPV4,
	.input_index = RTE_ACL_IPV4_SRC,
	.offset = offsetof(struct ip, ip_src) -	offsetof(struct ip, ip_p)
	},
	{
	.type = RTE_ACL_FIELD_TYPE_MASK,
	.size = sizeof(uint32_t),
	.field_index = DST_FIELD_IPV4,
	.input_index = RTE_ACL_IPV4_DST,
	.offset = offsetof(struct ip, ip_dst) - offsetof(struct ip, ip_p)
	},
	{
	.type = RTE_ACL_FIELD_TYPE_RANGE,
	.size = sizeof(uint16_t),
	.field_index = SRCP_FIELD_IPV4,
	.input_index = RTE_ACL_IPV4_PORTS,
	.offset = sizeof(struct ip) - offsetof(struct ip, ip_p)
	},
	{
	.type = RTE_ACL_FIELD_TYPE_RANGE,
	.size = sizeof(uint16_t),
	.field_index = DSTP_FIELD_IPV4,
	.input_index = RTE_ACL_IPV4_PORTS,
	.offset = sizeof(struct ip) - offsetof(struct ip, ip_p) +
		sizeof(uint16_t)
	},
};

RTE_ACL_RULE_DEF(acl4_rules, RTE_DIM(ip4_defs));

struct acl4_rules acl4_rules_out[MAX_ACL_RULE_NUM];
uint32_t nb_acl4_rules_out;

struct acl4_rules acl4_rules_in[MAX_ACL_RULE_NUM];
uint32_t nb_acl4_rules_in;

void
parse_sp4_tokens(char **tokens, uint32_t n_tokens,
	struct parse_status *status)
{
	struct acl4_rules *rule_ipv4 = NULL;

	uint32_t *ri = NULL; /* rule index */
	uint32_t ti = 0; /* token index */

	uint32_t esp_p = 0;
	uint32_t protect_p = 0;
	uint32_t bypass_p = 0;
	uint32_t discard_p = 0;
	uint32_t pri_p = 0;
	uint32_t src_p = 0;
	uint32_t dst_p = 0;
	uint32_t proto_p = 0;
	uint32_t sport_p = 0;
	uint32_t dport_p = 0;

	if (strcmp(tokens[1], "in") == 0) {
		ri = &nb_acl4_rules_in;

		APP_CHECK(*ri <= MAX_ACL_RULE_NUM - 1, status,
			"too many sp rules, abort insertion\n");
		if (status->status < 0)
			return;

		rule_ipv4 = &acl4_rules_in[*ri];

	} else if (strcmp(tokens[1], "out") == 0) {
		ri = &nb_acl4_rules_out;

		APP_CHECK(*ri <= MAX_ACL_RULE_NUM - 1, status,
			"too many sp rules, abort insertion\n");
		if (status->status < 0)
			return;

		rule_ipv4 = &acl4_rules_out[*ri];
	} else {
		APP_CHECK(0, status, "unrecognized input \"%s\", expect"
			" \"in\" or \"out\"\n", tokens[ti]);
		return;
	}

	rule_ipv4->data.category_mask = 1;

	for (ti = 2; ti < n_tokens; ti++) {
		if (strcmp(tokens[ti], "esp") == 0) {
			/* currently do nothing */
			APP_CHECK_PRESENCE(esp_p, tokens[ti], status);
			if (status->status < 0)
				return;
			esp_p = 1;
			continue;
		}

		if (strcmp(tokens[ti], "protect") == 0) {
			APP_CHECK_PRESENCE(protect_p, tokens[ti], status);
			if (status->status < 0)
				return;
			APP_CHECK(bypass_p == 0, status, "conflict item "
				"between \"%s\" and \"%s\"", tokens[ti],
				"bypass");
			if (status->status < 0)
				return;
			APP_CHECK(discard_p == 0, status, "conflict item "
				"between \"%s\" and \"%s\"", tokens[ti],
				"discard");
			if (status->status < 0)
				return;
			INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
			if (status->status < 0)
				return;
			APP_CHECK_TOKEN_IS_NUM(tokens, ti, status);
			if (status->status < 0)
				return;

			rule_ipv4->data.userdata =
				PROTECT(atoi(tokens[ti]));

			protect_p = 1;
			continue;
		}

		if (strcmp(tokens[ti], "bypass") == 0) {
			APP_CHECK_PRESENCE(bypass_p, tokens[ti], status);
			if (status->status < 0)
				return;
			APP_CHECK(protect_p == 0, status, "conflict item "
				"between \"%s\" and \"%s\"", tokens[ti],
				"protect");
			if (status->status < 0)
				return;
			APP_CHECK(discard_p == 0, status, "conflict item "
				"between \"%s\" and \"%s\"", tokens[ti],
				"discard");
			if (status->status < 0)
				return;

			rule_ipv4->data.userdata = BYPASS;

			bypass_p = 1;
			continue;
		}

		if (strcmp(tokens[ti], "discard") == 0) {
			APP_CHECK_PRESENCE(discard_p, tokens[ti], status);
			if (status->status < 0)
				return;
			APP_CHECK(protect_p == 0, status, "conflict item "
				"between \"%s\" and \"%s\"", tokens[ti],
				"protect");
			if (status->status < 0)
				return;
			APP_CHECK(bypass_p == 0, status, "conflict item "
				"between \"%s\" and \"%s\"", tokens[ti],
				"discard");
			if (status->status < 0)
				return;

			rule_ipv4->data.userdata = DISCARD;

			discard_p = 1;
			continue;
		}

		if (strcmp(tokens[ti], "pri") == 0) {
			APP_CHECK_PRESENCE(pri_p, tokens[ti], status);
			if (status->status < 0)
				return;
			INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
			if (status->status < 0)
				return;
			APP_CHECK_TOKEN_IS_NUM(tokens, ti, status);
			if (status->status < 0)
				return;

			rule_ipv4->data.priority = atoi(tokens[ti]);

			pri_p = 1;
			continue;
		}

		if (strcmp(tokens[ti], "src") == 0) {
			struct in_addr ip;
			uint32_t depth;

			APP_CHECK_PRESENCE(src_p, tokens[ti], status);
			if (status->status < 0)
				return;
			INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
			if (status->status < 0)
				return;

			APP_CHECK(parse_ipv4_addr(tokens[ti], &ip,
				&depth) == 0, status, "unrecognized "
				"input \"%s\", expect valid ipv4 addr",
				tokens[ti]);
			if (status->status < 0)
				return;

			rule_ipv4->field[1].value.u32 =
				rte_bswap32(ip.s_addr);
			rule_ipv4->field[1].mask_range.u32 =
				depth;

			src_p = 1;
			continue;
		}

		if (strcmp(tokens[ti], "dst") == 0) {
			struct in_addr ip;
			uint32_t depth;

			APP_CHECK_PRESENCE(dst_p, tokens[ti], status);
			if (status->status < 0)
				return;
			INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
			if (status->status < 0)
				return;
			APP_CHECK(parse_ipv4_addr(tokens[ti], &ip,
				&depth) == 0, status, "unrecognized "
				"input \"%s\", expect valid ipv4 addr",
				tokens[ti]);
			if (status->status < 0)
				return;

			rule_ipv4->field[2].value.u32 =
				rte_bswap32(ip.s_addr);
			rule_ipv4->field[2].mask_range.u32 =
				depth;

			dst_p = 1;
			continue;
		}

		if (strcmp(tokens[ti], "proto") == 0) {
			uint16_t low, high;

			APP_CHECK_PRESENCE(proto_p, tokens[ti], status);
			if (status->status < 0)
				return;
			INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
			if (status->status < 0)
				return;

			APP_CHECK(parse_range(tokens[ti], &low, &high)
				== 0, status, "unrecognized input \"%s\""
				", expect \"from:to\"", tokens[ti]);
			if (status->status < 0)
				return;
			APP_CHECK(low <= 0xff, status, "proto low "
				"over-limit");
			if (status->status < 0)
				return;
			APP_CHECK(high <= 0xff, status, "proto high "
				"over-limit");
			if (status->status < 0)
				return;

			rule_ipv4->field[0].value.u8 = (uint8_t)low;
			rule_ipv4->field[0].mask_range.u8 = (uint8_t)high;

			proto_p = 1;
			continue;
		}

		if (strcmp(tokens[ti], "sport") == 0) {
			uint16_t port_low, port_high;

			APP_CHECK_PRESENCE(sport_p, tokens[ti], status);
			if (status->status < 0)
				return;
			INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
			if (status->status < 0)
				return;

			APP_CHECK(parse_range(tokens[ti], &port_low,
				&port_high) == 0, status, "unrecognized "
				"input \"%s\", expect \"port_from:"
				"port_to\"", tokens[ti]);
			if (status->status < 0)
				return;

			rule_ipv4->field[3].value.u16 = port_low;
			rule_ipv4->field[3].mask_range.u16 = port_high;

			sport_p = 1;
			continue;
		}

		if (strcmp(tokens[ti], "dport") == 0) {
			uint16_t port_low, port_high;

			APP_CHECK_PRESENCE(dport_p, tokens[ti], status);
			if (status->status < 0)
				return;
			INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
			if (status->status < 0)
				return;

			APP_CHECK(parse_range(tokens[ti], &port_low,
				&port_high) == 0, status, "unrecognized "
				"input \"%s\", expect \"port_from:"
				"port_to\"", tokens[ti]);
			if (status->status < 0)
				return;

			rule_ipv4->field[4].value.u16 = port_low;
			rule_ipv4->field[4].mask_range.u16 = port_high;

			dport_p = 1;
			continue;
		}

		/* unrecognizeable input */
		APP_CHECK(0, status, "unrecognized input \"%s\"",
			tokens[ti]);
		return;
	}

	/* check if argument(s) are missing */
	APP_CHECK(esp_p == 1, status, "missing argument \"esp\"");
	if (status->status < 0)
		return;

	APP_CHECK(protect_p | bypass_p | discard_p, status, "missing "
		"argument \"protect\", \"bypass\", or \"discard\"");
	if (status->status < 0)
		return;

	*ri = *ri + 1;
}

static void
print_one_ip4_rule(const struct acl4_rules *rule, int32_t extra)
{
	uint8_t a, b, c, d;

	uint32_t_to_char(rule->field[SRC_FIELD_IPV4].value.u32,
			&a, &b, &c, &d);
	printf("%hhu.%hhu.%hhu.%hhu/%u ", a, b, c, d,
			rule->field[SRC_FIELD_IPV4].mask_range.u32);
	uint32_t_to_char(rule->field[DST_FIELD_IPV4].value.u32,
			&a, &b, &c, &d);
	printf("%hhu.%hhu.%hhu.%hhu/%u ", a, b, c, d,
			rule->field[DST_FIELD_IPV4].mask_range.u32);
	printf("%hu : %hu %hu : %hu 0x%hhx/0x%hhx ",
		rule->field[SRCP_FIELD_IPV4].value.u16,
		rule->field[SRCP_FIELD_IPV4].mask_range.u16,
		rule->field[DSTP_FIELD_IPV4].value.u16,
		rule->field[DSTP_FIELD_IPV4].mask_range.u16,
		rule->field[PROTO_FIELD_IPV4].value.u8,
		rule->field[PROTO_FIELD_IPV4].mask_range.u8);
	if (extra)
		printf("0x%x-0x%x-0x%x ",
			rule->data.category_mask,
			rule->data.priority,
			rule->data.userdata);
}

static inline void
dump_ip4_rules(const struct acl4_rules *rule, int32_t num, int32_t extra)
{
	int32_t i;

	for (i = 0; i < num; i++, rule++) {
		printf("\t%d:", i + 1);
		print_one_ip4_rule(rule, extra);
		printf("\n");
	}
}

static struct rte_acl_ctx *
acl4_init(const char *name, int32_t socketid, const struct acl4_rules *rules,
		uint32_t rules_nb)
{
	char s[PATH_MAX];
	struct rte_acl_param acl_param;
	struct rte_acl_config acl_build_param;
	struct rte_acl_ctx *ctx;

	printf("Creating SP context with %u max rules\n", MAX_ACL_RULE_NUM);

	memset(&acl_param, 0, sizeof(acl_param));

	/* Create ACL contexts */
	snprintf(s, sizeof(s), "%s_%d", name, socketid);

	printf("IPv4 %s entries [%u]:\n", s, rules_nb);
	dump_ip4_rules(rules, rules_nb, 1);

	acl_param.name = s;
	acl_param.socket_id = socketid;
	acl_param.rule_size = RTE_ACL_RULE_SZ(RTE_DIM(ip4_defs));
	acl_param.max_rule_num = MAX_ACL_RULE_NUM;

	ctx = rte_acl_create(&acl_param);
	if (ctx == NULL)
		rte_exit(EXIT_FAILURE, "Failed to create ACL context\n");

	if (rte_acl_add_rules(ctx, (const struct rte_acl_rule *)rules,
				rules_nb) < 0)
		rte_exit(EXIT_FAILURE, "add rules failed\n");

	/* Perform builds */
	memset(&acl_build_param, 0, sizeof(acl_build_param));

	acl_build_param.num_categories = DEFAULT_MAX_CATEGORIES;
	acl_build_param.num_fields = RTE_DIM(ip4_defs);
	memcpy(&acl_build_param.defs, ip4_defs, sizeof(ip4_defs));

	if (rte_acl_build(ctx, &acl_build_param) != 0)
		rte_exit(EXIT_FAILURE, "Failed to build ACL trie\n");

	rte_acl_dump(ctx);

	return ctx;
}

void
sp4_init(struct socket_ctx *ctx, int32_t socket_id)
{
	const char *name;

	if (ctx == NULL)
		rte_exit(EXIT_FAILURE, "NULL context.\n");

	if (ctx->sp_ip4_in != NULL)
		rte_exit(EXIT_FAILURE, "Inbound SP DB for socket %u already "
				"initialized\n", socket_id);

	if (ctx->sp_ip4_out != NULL)
		rte_exit(EXIT_FAILURE, "Outbound SP DB for socket %u already "
				"initialized\n", socket_id);

	if (nb_acl4_rules_in > 0) {
		name = "sp_ip4_in";
		ctx->sp_ip4_in = (struct sp_ctx *)acl4_init(name,
			socket_id, acl4_rules_in, nb_acl4_rules_in);
	} else
		RTE_LOG(WARNING, IPSEC, "No IPv4 SP Inbound rule "
			"specified\n");

	if (nb_acl4_rules_out > 0) {
		name = "sp_ip4_out";
		ctx->sp_ip4_out = (struct sp_ctx *)acl4_init(name,
			socket_id, acl4_rules_out, nb_acl4_rules_out);
	} else
		RTE_LOG(WARNING, IPSEC, "No IPv4 SP Outbound rule "
			"specified\n");
}