summaryrefslogtreecommitdiffstats
path: root/examples/ipsec-secgw/ipsec.h
blob: 775b316ffdff71d244abfbc848cb4cab21a1dfe8 (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
/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2016-2017 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.
 */

#ifndef __IPSEC_H__
#define __IPSEC_H__

#include <stdint.h>

#include <rte_byteorder.h>
#include <rte_crypto.h>
#include <rte_security.h>
#include <rte_flow.h>

#define RTE_LOGTYPE_IPSEC       RTE_LOGTYPE_USER1
#define RTE_LOGTYPE_IPSEC_ESP   RTE_LOGTYPE_USER2
#define RTE_LOGTYPE_IPSEC_IPIP  RTE_LOGTYPE_USER3

#define MAX_PKT_BURST 32
#define MAX_QP_PER_LCORE 256

#define MAX_DIGEST_SIZE 32 /* Bytes -- 256 bits */

#define IV_OFFSET		(sizeof(struct rte_crypto_op) + \
				sizeof(struct rte_crypto_sym_op))

#define uint32_t_to_char(ip, a, b, c, d) do {\
		*a = (uint8_t)(ip >> 24 & 0xff);\
		*b = (uint8_t)(ip >> 16 & 0xff);\
		*c = (uint8_t)(ip >> 8 & 0xff);\
		*d = (uint8_t)(ip & 0xff);\
	} while (0)

#define DEFAULT_MAX_CATEGORIES	1

#define IPSEC_SA_MAX_ENTRIES (128) /* must be power of 2, max 2 power 30 */
#define SPI2IDX(spi) (spi & (IPSEC_SA_MAX_ENTRIES - 1))
#define INVALID_SPI (0)

#define DISCARD (0x80000000)
#define BYPASS (0x40000000)
#define PROTECT_MASK (0x3fffffff)
#define PROTECT(sa_idx) (SPI2IDX(sa_idx) & PROTECT_MASK) /* SA idx 30 bits */

#define IPSEC_XFORM_MAX 2

#define IP6_VERSION (6)

struct rte_crypto_xform;
struct ipsec_xform;
struct rte_mbuf;

struct ipsec_sa;

typedef int32_t (*ipsec_xform_fn)(struct rte_mbuf *m, struct ipsec_sa *sa,
		struct rte_crypto_op *cop);

struct ip_addr {
	union {
		uint32_t ip4;
		union {
			uint64_t ip6[2];
			uint8_t ip6_b[16];
		} ip6;
	} ip;
};

#define MAX_KEY_SIZE		32

struct ipsec_sa {
	uint32_t spi;
	uint32_t cdev_id_qp;
	uint64_t seq;
	uint32_t salt;
	union {
		struct rte_cryptodev_sym_session *crypto_session;
		struct rte_security_session *sec_session;
	};
	enum rte_crypto_cipher_algorithm cipher_algo;
	enum rte_crypto_auth_algorithm auth_algo;
	enum rte_crypto_aead_algorithm aead_algo;
	uint16_t digest_len;
	uint16_t iv_len;
	uint16_t block_size;
	uint16_t flags;
#define IP4_TUNNEL (1 << 0)
#define IP6_TUNNEL (1 << 1)
#define TRANSPORT  (1 << 2)
	struct ip_addr src;
	struct ip_addr dst;
	uint8_t cipher_key[MAX_KEY_SIZE];
	uint16_t cipher_key_len;
	uint8_t auth_key[MAX_KEY_SIZE];
	uint16_t auth_key_len;
	uint16_t aad_len;
	union {
		struct rte_crypto_sym_xform *xforms;
		struct rte_security_ipsec_xform *sec_xform;
	};
	enum rte_security_session_action_type type;
	enum rte_security_ipsec_sa_direction direction;
	uint16_t portid;
	struct rte_security_ctx *security_ctx;
	uint32_t ol_flags;

#define MAX_RTE_FLOW_PATTERN (4)
#define MAX_RTE_FLOW_ACTIONS (2)
	struct rte_flow_item pattern[MAX_RTE_FLOW_PATTERN];
	struct rte_flow_action action[MAX_RTE_FLOW_ACTIONS];
	struct rte_flow_attr attr;
	union {
		struct rte_flow_item_ipv4 ipv4_spec;
		struct rte_flow_item_ipv6 ipv6_spec;
	};
	struct rte_flow_item_esp esp_spec;
	struct rte_flow *flow;
	struct rte_security_session_conf sess_conf;
} __rte_cache_aligned;

struct ipsec_mbuf_metadata {
	struct ipsec_sa *sa;
	struct rte_crypto_op cop;
	struct rte_crypto_sym_op sym_cop;
	uint8_t buf[32];
} __rte_cache_aligned;

struct cdev_qp {
	uint16_t id;
	uint16_t qp;
	uint16_t in_flight;
	uint16_t len;
	struct rte_crypto_op *buf[MAX_PKT_BURST] __rte_aligned(sizeof(void *));
	struct rte_mbuf *ol_pkts[MAX_PKT_BURST] __rte_aligned(sizeof(void *));
	uint16_t ol_pkts_cnt;
};

struct ipsec_ctx {
	struct rte_hash *cdev_map;
	struct sp_ctx *sp4_ctx;
	struct sp_ctx *sp6_ctx;
	struct sa_ctx *sa_ctx;
	uint16_t nb_qps;
	uint16_t last_qp;
	struct cdev_qp tbl[MAX_QP_PER_LCORE];
	struct rte_mempool *session_pool;
};

struct cdev_key {
	uint16_t lcore_id;
	uint8_t cipher_algo;
	uint8_t auth_algo;
	uint8_t aead_algo;
};

struct socket_ctx {
	struct sa_ctx *sa_in;
	struct sa_ctx *sa_out;
	struct sp_ctx *sp_ip4_in;
	struct sp_ctx *sp_ip4_out;
	struct sp_ctx *sp_ip6_in;
	struct sp_ctx *sp_ip6_out;
	struct rt_ctx *rt_ip4;
	struct rt_ctx *rt_ip6;
	struct rte_mempool *mbuf_pool;
	struct rte_mempool *session_pool;
};

struct cnt_blk {
	uint32_t salt;
	uint64_t iv;
	uint32_t cnt;
} __attribute__((packed));

uint16_t
ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
		uint16_t nb_pkts, uint16_t len);

uint16_t
ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
		uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len);

static inline uint16_t
ipsec_metadata_size(void)
{
	return sizeof(struct ipsec_mbuf_metadata);
}

static inline struct ipsec_mbuf_metadata *
get_priv(struct rte_mbuf *m)
{
	return RTE_PTR_ADD(m, sizeof(struct rte_mbuf));
}

static inline void *
get_cnt_blk(struct rte_mbuf *m)
{
	struct ipsec_mbuf_metadata *priv = get_priv(m);

	return &priv->buf[0];
}

static inline void *
get_aad(struct rte_mbuf *m)
{
	struct ipsec_mbuf_metadata *priv = get_priv(m);

	return &priv->buf[16];
}

static inline void *
get_sym_cop(struct rte_crypto_op *cop)
{
	return (cop + 1);
}

int
inbound_sa_check(struct sa_ctx *sa_ctx, struct rte_mbuf *m, uint32_t sa_idx);

void
inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf *pkts[],
		struct ipsec_sa *sa[], uint16_t nb_pkts);

void
outbound_sa_lookup(struct sa_ctx *sa_ctx, uint32_t sa_idx[],
		struct ipsec_sa *sa[], uint16_t nb_pkts);

void
sp4_init(struct socket_ctx *ctx, int32_t socket_id);

void
sp6_init(struct socket_ctx *ctx, int32_t socket_id);

void
sa_init(struct socket_ctx *ctx, int32_t socket_id);

void
rt_init(struct socket_ctx *ctx, int32_t socket_id);

#endif /* __IPSEC_H__ */