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/*
* Copyright (c) 2015 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __IPSEC_SPD_SA_H__
#define __IPSEC_SPD_SA_H__
#include <vlib/vlib.h>
#include <vnet/ip/ip.h>
#include <vnet/fib/fib_node.h>
#define foreach_ipsec_crypto_alg \
_ (0, NONE, "none") \
_ (1, AES_CBC_128, "aes-cbc-128") \
_ (2, AES_CBC_192, "aes-cbc-192") \
_ (3, AES_CBC_256, "aes-cbc-256") \
_ (4, AES_CTR_128, "aes-ctr-128") \
_ (5, AES_CTR_192, "aes-ctr-192") \
_ (6, AES_CTR_256, "aes-ctr-256") \
_ (7, AES_GCM_128, "aes-gcm-128") \
_ (8, AES_GCM_192, "aes-gcm-192") \
_ (9, AES_GCM_256, "aes-gcm-256") \
_ (10, DES_CBC, "des-cbc") \
_ (11, 3DES_CBC, "3des-cbc")
typedef enum
{
#define _(v, f, s) IPSEC_CRYPTO_ALG_##f = v,
foreach_ipsec_crypto_alg
#undef _
IPSEC_CRYPTO_N_ALG,
} ipsec_crypto_alg_t;
#define foreach_ipsec_integ_alg \
_ (0, NONE, "none") \
_ (1, MD5_96, "md5-96") /* RFC2403 */ \
_ (2, SHA1_96, "sha1-96") /* RFC2404 */ \
_ (3, SHA_256_96, "sha-256-96") /* draft-ietf-ipsec-ciph-sha-256-00 */ \
_ (4, SHA_256_128, "sha-256-128") /* RFC4868 */ \
_ (5, SHA_384_192, "sha-384-192") /* RFC4868 */ \
_ (6, SHA_512_256, "sha-512-256") /* RFC4868 */
typedef enum
{
#define _(v, f, s) IPSEC_INTEG_ALG_##f = v,
foreach_ipsec_integ_alg
#undef _
IPSEC_INTEG_N_ALG,
} ipsec_integ_alg_t;
typedef enum
{
IPSEC_PROTOCOL_AH = 0,
IPSEC_PROTOCOL_ESP = 1
} ipsec_protocol_t;
#define IPSEC_N_PROTOCOLS (IPSEC_PROTOCOL_ESP+1)
#define IPSEC_KEY_MAX_LEN 128
typedef struct ipsec_key_t_
{
u8 len;
u8 data[IPSEC_KEY_MAX_LEN];
} ipsec_key_t;
/*
* Enable extended sequence numbers
* Enable Anti-replay
* IPsec tunnel mode if non-zero, else transport mode
* IPsec tunnel mode is IPv6 if non-zero,
* else IPv4 tunnel only valid if is_tunnel is non-zero
* enable UDP encapsulation for NAT traversal
*/
#define foreach_ipsec_sa_flags \
_ (0, NONE, "none") \
_ (1, USE_EXTENDED_SEQ_NUM, "esn") \
_ (2, USE_ANTI_REPLAY, "anti-replay") \
_ (4, IS_TUNNEL, "tunnel") \
_ (8, IS_TUNNEL_V6, "tunnel-v6") \
_ (16, UDP_ENCAP, "udp-encap") \
typedef enum ipsec_sad_flags_t_
{
#define _(v, f, s) IPSEC_SA_FLAG_##f = v,
foreach_ipsec_sa_flags
#undef _
} ipsec_sa_flags_t;
typedef struct
{
fib_node_t node;
u32 id;
u32 spi;
ipsec_protocol_t protocol;
ipsec_crypto_alg_t crypto_alg;
ipsec_key_t crypto_key;
ipsec_integ_alg_t integ_alg;
ipsec_key_t integ_key;
u8 use_esn;
u8 use_anti_replay;
u8 is_tunnel;
u8 is_tunnel_ip6;
u8 udp_encap;
ip46_address_t tunnel_src_addr;
ip46_address_t tunnel_dst_addr;
fib_node_index_t fib_entry_index;
u32 sibling;
dpo_id_t dpo[IPSEC_N_PROTOCOLS];
u32 tx_fib_index;
u32 salt;
/* runtime */
u32 seq;
u32 seq_hi;
u32 last_seq;
u32 last_seq_hi;
u64 replay_window;
/* lifetime data */
u64 total_data_size;
} ipsec_sa_t;
extern void ipsec_mk_key (ipsec_key_t * key, const u8 * data, u8 len);
extern int ipsec_sa_add (u32 id,
u32 spi,
ipsec_protocol_t proto,
ipsec_crypto_alg_t crypto_alg,
const ipsec_key_t * ck,
ipsec_integ_alg_t integ_alg,
const ipsec_key_t * ik,
ipsec_sa_flags_t flags,
u32 tx_table_id,
const ip46_address_t * tunnel_src_addr,
const ip46_address_t * tunnel_dst_addr,
u32 * sa_index);
extern u32 ipsec_sa_del (u32 id);
extern void ipsec_sa_stack (ipsec_sa_t * sa);
extern u8 ipsec_is_sa_used (u32 sa_index);
extern int ipsec_set_sa_key (u32 id,
const ipsec_key_t * ck, const ipsec_key_t * ik);
extern u32 ipsec_get_sa_index_by_sa_id (u32 sa_id);
typedef walk_rc_t (*ipsec_sa_walk_cb_t) (ipsec_sa_t * sa, void *ctx);
extern void ipsec_sa_walk (ipsec_sa_walk_cb_t cd, void *ctx);
extern u8 *format_ipsec_crypto_alg (u8 * s, va_list * args);
extern u8 *format_ipsec_integ_alg (u8 * s, va_list * args);
extern u8 *format_ipsec_sa (u8 * s, va_list * args);
extern u8 *format_ipsec_key (u8 * s, va_list * args);
extern uword unformat_ipsec_crypto_alg (unformat_input_t * input,
va_list * args);
extern uword unformat_ipsec_integ_alg (unformat_input_t * input,
va_list * args);
extern uword unformat_ipsec_key (unformat_input_t * input, va_list * args);
#endif /* __IPSEC_SPD_SA_H__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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