/* * 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; u32 stat_index; 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; } ipsec_sa_t; /** * @brief * SA packet & bytes counters */ extern vlib_combined_counter_main_t ipsec_sa_counters; 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: */