/* * 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 <vnet/ip/ip.h> #include <vnet/crypto/crypto.h> #include <vnet/feature/feature.h> #include <vppinfra/types.h> #include <vppinfra/cache.h> #include <vnet/ipsec/ipsec_spd.h> #include <vnet/ipsec/ipsec_spd_policy.h> #include <vnet/ipsec/ipsec_sa.h> typedef clib_error_t *(*add_del_sa_sess_cb_t) (u32 sa_index, u8 is_add); typedef clib_error_t *(*check_support_cb_t) (ipsec_sa_t * sa); typedef struct { u8 *name; /* add/del callback */ add_del_sa_sess_cb_t add_del_sa_sess_cb; /* check support function */ check_support_cb_t check_support_cb; u32 ah4_encrypt_node_index; u32 ah4_decrypt_node_index; u32 ah4_encrypt_next_index; u32 ah4_decrypt_next_index; u32 ah6_encrypt_node_index; u32 ah6_decrypt_node_index; u32 ah6_encrypt_next_index; u32 ah6_decrypt_next_index; } ipsec_ah_backend_t; typedef struct { u8 *name; /* add/del callback */ add_del_sa_sess_cb_t add_del_sa_sess_cb; /* check support function */ check_support_cb_t check_support_cb; u32 esp4_encrypt_node_index; u32 esp4_decrypt_node_index; u32 esp4_encrypt_next_index; u32 esp4_decrypt_next_index; u32 esp6_encrypt_node_index; u32 esp6_decrypt_node_index; u32 esp6_encrypt_next_index; u32 esp6_decrypt_next_index; u32 esp44_encrypt_tun_feature_index; u32 esp46_encrypt_tun_feature_index; u32 esp66_encrypt_tun_feature_index; u32 esp64_encrypt_tun_feature_index; } ipsec_esp_backend_t; typedef struct { vnet_crypto_op_id_t enc_op_id; vnet_crypto_op_id_t dec_op_id; vnet_crypto_alg_t alg; u8 iv_size; u8 block_size; u8 icv_size; } ipsec_main_crypto_alg_t; typedef struct { vnet_crypto_op_id_t op_id; vnet_crypto_alg_t alg; u8 icv_size; } ipsec_main_integ_alg_t; typedef struct { vnet_crypto_op_t *crypto_ops; vnet_crypto_op_t *integ_ops; } ipsec_per_thread_data_t; typedef struct { /* pool of tunnel instances */ ipsec_spd_t *spds; /* Pool of security associations */ ipsec_sa_t *sad; /* pool of policies */ ipsec_policy_t *policies; uword *tunnel_index_by_key; /* convenience */ vlib_main_t *vlib_main; vnet_main_t *vnet_main; /* hashes */ uword *spd_index_by_spd_id; uword *spd_index_by_sw_if_index; uword *sa_index_by_sa_id; uword *ipsec4_if_pool_index_by_key; uword *ipsec6_if_pool_index_by_key; uword *ipsec_if_real_dev_by_show_dev; uword *ipsec_if_by_sw_if_index; uword *tun4_protect_by_key; uword *tun6_protect_by_key; /* node indices */ u32 error_drop_node_index; u32 esp4_encrypt_node_index; u32 esp4_decrypt_node_index; u32 ah4_encrypt_node_index; u32 ah4_decrypt_node_index; u32 esp6_encrypt_node_index; u32 esp6_decrypt_node_index; u32 ah6_encrypt_node_index; u32 ah6_decrypt_node_index; /* next node indices */ u32 esp4_encrypt_next_index; u32 esp4_decrypt_next_index; u32 ah4_encrypt_next_index; u32 ah4_decrypt_next_index; u32 esp6_encrypt_next_index; u32 esp6_decrypt_next_index; u32 ah6_encrypt_next_index; u32 ah6_decrypt_next_index; /* tun encrypt arcs and feature nodes */ u32 esp44_encrypt_tun_feature_index; u32 esp64_encrypt_tun_feature_index; u32 esp46_encrypt_tun_feature_index; u32 esp66_encrypt_tun_feature_index; /* tun nodes to drop packets when no crypto alg set on outbound SA */ u32 esp4_no_crypto_tun_feature_index; u32 esp6_no_crypto_tun_feature_index; /* pool of ah backends */ ipsec_ah_backend_t *ah_backends; /* pool of esp backends */ ipsec_esp_backend_t *esp_backends; /* index of current ah backend */ u32 ah_current_backend; /* index of current esp backend */ u32 esp_current_backend; /* index of default ah backend */ u32 ah_default_backend; /* index of default esp backend */ u32 esp_default_backend; /* crypto alg data */ ipsec_main_crypto_alg_t *crypto_algs; /* crypto integ data */ ipsec_main_integ_alg_t *integ_algs; /* per-thread data */ ipsec_per_thread_data_t *ptd; /** Worker handoff */ u32 ah4_enc_fq_index; u32 ah4_dec_fq_index; u32 ah6_enc_fq_index; u32 ah6_dec_fq_index; u32 esp4_enc_fq_index; u32 esp4_dec_fq_index; u32 esp6_enc_fq_index; u32 esp6_dec_fq_index; u32 esp4_enc_tun_fq_index; u32 esp6_enc_tun_fq_index; u32 esp4_dec_tun_fq_index; u32 esp6_dec_tun_fq_index; } ipsec_main_t; typedef enum ipsec_format_flags_t_ { IPSEC_FORMAT_BRIEF = 0, IPSEC_FORMAT_DETAIL = (1 << 0), IPSEC_FORMAT_INSECURE = (1 << 1), } ipsec_format_flags_t; extern ipsec_main_t ipsec_main; clib_error_t *ipsec_add_del_sa_sess_cb (ipsec_main_t * im, u32 sa_index, u8 is_add); clib_error_t *ipsec_check_support_cb (ipsec_main_t * im, ipsec_sa_t * sa); extern vlib_node_registration_t ah4_encrypt_node; extern vlib_node_registration_t ah4_decrypt_node; extern vlib_node_registration_t ah6_encrypt_node; extern vlib_node_registration_t ah6_decrypt_node; extern vlib_node_registration_t esp4_encrypt_node; extern vlib_node_registration_t esp4_decrypt_node; extern vlib_node_registration_t esp6_encrypt_node; extern vlib_node_registration_t esp6_decrypt_node; extern vlib_node_registration_t esp4_encrypt_tun_node; extern vlib_node_registration_t esp6_encrypt_tun_node; extern vlib_node_registration_t esp4_decrypt_tun_node; extern vlib_node_registration_t esp6_decrypt_tun_node; extern vlib_node_registration_t ipsec4_if_input_node; extern vlib_node_registration_t ipsec6_if_input_node; /* * functions */ u8 *format_ipsec_replay_window (u8 * s, va_list * args); /* * inline functions */ static_always_inline u32 get_next_output_feature_node_index (vlib_buffer_t * b, vlib_node_runtime_t * nr) { u32 next; vlib_main_t *vm = vlib_get_main (); vlib_node_t *node = vlib_get_node (vm, nr->node_index); vnet_feature_next (&next, b); return node->next_nodes[next]; } u32 ipsec_register_ah_backend (vlib_main_t * vm, ipsec_main_t * im, const char *name, const char *ah4_encrypt_node_name, const char *ah4_decrypt_node_name, const char *ah6_encrypt_node_name, const char *ah6_decrypt_node_name, check_support_cb_t ah_check_support_cb, add_del_sa_sess_cb_t ah_add_del_sa_sess_cb); u32 ipsec_register_esp_backend (vlib_main_t * vm, ipsec_main_t * im, const char *name, const char *esp4_encrypt_node_name, const char *esp4_encrypt_tun_node_name, const char *esp4_decrypt_node_name, const char *esp6_encrypt_node_name, const char *esp6_encrypt_tun_node_name, const char *esp6_decrypt_node_name, check_support_cb_t esp_check_support_cb, add_del_sa_sess_cb_t esp_add_del_sa_sess_cb); int ipsec_select_ah_backend (ipsec_main_t * im, u32 ah_backend_idx); int ipsec_select_esp_backend (ipsec_main_t * im, u32 esp_backend_idx); clib_error_t *ipsec_rsc_in_use (ipsec_main_t * im); always_inline ipsec_sa_t * ipsec_sa_get (u32 sa_index) { return (pool_elt_at_index (ipsec_main.sad, sa_index)); } void ipsec_add_feature (const char *arc_name, const char *node_name, u32 * out_feature_index); #endif /* __IPSEC_H__ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */