/* * 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_H__ #define __IPSEC_H__ #include #include #define IPSEC_FLAG_IPSEC_GRE_TUNNEL (1 << 0) #define foreach_ipsec_output_next \ _(DROP, "error-drop") \ _(ESP_ENCRYPT, "esp-encrypt") \ _(AH_ENCRYPT, "ah-encrypt") #define _(v, s) IPSEC_OUTPUT_NEXT_##v, typedef enum { foreach_ipsec_output_next #undef _ IPSEC_OUTPUT_N_NEXT, } ipsec_output_next_t; #define foreach_ipsec_input_next \ _(DROP, "error-drop") \ _(ESP_DECRYPT, "esp-decrypt") \ _(AH_DECRYPT, "ah-decrypt") #define _(v, s) IPSEC_INPUT_NEXT_##v, typedef enum { foreach_ipsec_input_next #undef _ IPSEC_INPUT_N_NEXT, } ipsec_input_next_t; #define foreach_ipsec_policy_action \ _(0, BYPASS, "bypass") \ _(1, DISCARD, "discard") \ _(2, RESOLVE, "resolve") \ _(3, PROTECT, "protect") typedef enum { #define _(v,f,s) IPSEC_POLICY_ACTION_##f = v, foreach_ipsec_policy_action #undef _ IPSEC_POLICY_N_ACTION, } ipsec_policy_action_t; #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; typedef struct { u32 id; u32 spi; ipsec_protocol_t protocol; ipsec_crypto_alg_t crypto_alg; u8 crypto_key_len; u8 crypto_key[128]; ipsec_integ_alg_t integ_alg; u8 integ_key_len; u8 integ_key[128]; 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; 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; typedef struct { ip46_address_t start, stop; } ip46_address_range_t; typedef struct { u16 start, stop; } port_range_t; typedef struct { u8 is_add; u8 esn; u8 anti_replay; ip4_address_t local_ip, remote_ip; u32 local_spi; u32 remote_spi; ipsec_crypto_alg_t crypto_alg; u8 local_crypto_key_len; u8 local_crypto_key[128]; u8 remote_crypto_key_len; u8 remote_crypto_key[128]; ipsec_integ_alg_t integ_alg; u8 local_integ_key_len; u8 local_integ_key[128]; u8 remote_integ_key_len; u8 remote_integ_key[128]; u8 renumber; u32 show_instance; } ipsec_add_del_tunnel_args_t; typedef struct { u8 is_add; u32 local_sa_id; u32 remote_sa_id; ip4_address_t local_ip; ip4_address_t remote_ip; } ipsec_add_del_ipsec_gre_tunnel_args_t; typedef enum { IPSEC_IF_SET_KEY_TYPE_NONE, IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO, IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO, IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG, IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG, } ipsec_if_set_key_type_t; typedef struct { u32 id; i32 priority; u8 is_outbound; // Selector u8 is_ipv6; ip46_address_range_t laddr; ip46_address_range_t raddr; u8 protocol; port_range_t lport; port_range_t rport; // Policy u8 policy; u32 sa_id; u32 sa_index; // Counter vlib_counter_t counter; } ipsec_policy_t; typedef struct { u32 id; /* pool of policies */ ipsec_policy_t *policies; /* vectors of policy indices */ u32 *ipv4_outbound_policies; u32 *ipv6_outbound_policies; u32 *ipv4_inbound_protect_policy_indices; u32 *ipv4_inbound_policy_discard_and_bypass_indices; u32 *ipv6_inbound_protect_policy_indices; u32 *ipv6_inbound_policy_discard_and_bypass_indices; } ipsec_spd_t; typedef struct { u32 spd_index; } ip4_ipsec_config_t; typedef struct { u32 spd_index; } ip6_ipsec_config_t; typedef struct { /* Required for pool_get_aligned */ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); u32 input_sa_index; u32 output_sa_index; u32 hw_if_index; u32 show_instance; } ipsec_tunnel_if_t; typedef struct { clib_error_t *(*add_del_sa_sess_cb) (u32 sa_index, u8 is_add); clib_error_t *(*check_support_cb) (ipsec_sa_t * sa); } ipsec_main_callbacks_t; typedef struct { /* pool of tunnel instances */ ipsec_spd_t *spds; ipsec_sa_t *sad; /* pool of tunnel interfaces */ ipsec_tunnel_if_t *tunnel_interfaces; u32 *free_tunnel_if_indices; u32 **empty_buffers; uword *tunnel_index_by_key; /* convenience */ vlib_main_t *vlib_main; vnet_main_t *vnet_main; /* next node indices */ u32 feature_next_node_index[32]; /* hashes */ uword *spd_index_by_spd_id; uword *spd_index_by_sw_if_index; uword *sa_index_by_sa_id; uword *ipsec_if_pool_index_by_key; uword *ipsec_if_real_dev_by_show_dev; /* node indeces */ u32 error_drop_node_index; u32 esp_encrypt_node_index; u32 esp_decrypt_node_index; u32 ah_encrypt_node_index; u32 ah_decrypt_node_index; /* next node indeces */ u32 esp_encrypt_next_index; u32 esp_decrypt_next_index; u32 ah_encrypt_next_index; u32 ah_decrypt_next_index; /* callbacks */ ipsec_main_callbacks_t cb; } ipsec_main_t; extern ipsec_main_t ipsec_main; extern vlib_node_registration_t esp_encrypt_node; extern vlib_node_registration_t esp_decrypt_node; extern vlib_node_registr