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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_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>
#include <vppinfra/bihash_8_16.h>
#include <vppinfra/bihash_24_16.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 clib_error_t *(*enable_disable_cb_t) (int is_enable);
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;
/* enable or disable function */
enable_disable_cb_t enable_disable_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 esp4_decrypt_tun_node_index;
u32 esp4_decrypt_tun_next_index;
u32 esp4_encrypt_tun_node_index;
u32 esp6_decrypt_tun_node_index;
u32 esp6_decrypt_tun_next_index;
u32 esp6_encrypt_tun_node_index;
u32 esp_mpls_encrypt_tun_node_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_align;
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
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
vnet_crypto_op_t *crypto_ops;
vnet_crypto_op_t *integ_ops;
vnet_crypto_op_t *chained_crypto_ops;
vnet_crypto_op_t *chained_integ_ops;
vnet_crypto_op_chunk_t *chunks;
} ipsec_per_thread_data_t;
typedef struct
{
/* pool of tunnel instances */
ipsec_spd_t *spds;
/* pool of policies */
ipsec_policy_t *policies;
/* hash tables of UDP port registrations */
uword *udp_port_registrations;
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;
clib_bihash_8_16_t tun4_protect_by_key;
clib_bihash_24_16_t tun6_protect_by_key;
/* node indices */
u32 error_drop_node_index;
u32 esp4_encrypt_node_index;
u32 esp4_decrypt_node_index;
u32 esp4_decrypt_tun_node_index;
u32 esp4_encrypt_tun_node_index;
u32 ah4_encrypt_node_index;
u32 ah4_decrypt_node_index;
u32 esp6_encrypt_node_index;
u32 esp6_decrypt_node_index;
u32 esp6_decrypt_tun_node_index;
u32 esp6_encrypt_tun_node_index;
u32 esp_mpls_encrypt_tun_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 esp4_decrypt_tun_next_index;
u32 ah4_encrypt_next_index;
u32 ah4_decrypt_next_index;
u32 esp6_encrypt_next_index;
u32 esp6_decrypt_next_index;
u32 esp6_decrypt_tun_next_index;
u32 ah6_encrypt_next_index;
u32 ah6_decrypt_next_index;
/* tun nodes to drop packets when no crypto alg set on outbound SA */
u32 esp4_no_crypto_tun_node_index;
u32 esp6_no_crypto_tun_node_index;
/* tun nodes for encrypt on L2 interfaces */
u32 esp4_encrypt_l2_tun_node_index;
u32 esp6_encrypt_l2_tun_node_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 esp_mpls_enc_tun_fq_index;
u32 esp4_dec_tun_fq_index;
u32 esp6_dec_tun_fq_index;
u8 async_mode;
} 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 ipsec4_tun_input_node;
extern vlib_node_registration_t ipsec6_tun_input_node;
/*
* functions
*/
/*
* 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 *esp4_decrypt_tun_node_name,
const char *esp6_encrypt_node_name, const char *esp6_encrypt_tun_node_name,
const char *esp6_decrypt_node_name, const char *esp6_decrypt_tun_node_name,
const char *esp_mpls_encrypt_tun_node_name,
check_support_cb_t esp_check_support_cb,
add_del_sa_sess_cb_t esp_add_del_sa_sess_cb,
enable_disable_cb_t enable_disable_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);
void ipsec_set_async_mode (u32 is_enabled);
extern void ipsec_register_udp_port (u16 udp_port);
extern void ipsec_unregister_udp_port (u16 udp_port);
#endif /* __IPSEC_H__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/