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Diffstat (limited to 'src/vnet/ipsec/ipsec.h')
| -rw-r--r-- | src/vnet/ipsec/ipsec.h | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/src/vnet/ipsec/ipsec.h b/src/vnet/ipsec/ipsec.h new file mode 100644 index 00000000000..32c7edfc29d --- /dev/null +++ b/src/vnet/ipsec/ipsec.h @@ -0,0 +1,344 @@ +/* + * 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__ + +#define IPSEC_FLAG_IPSEC_GRE_TUNNEL (1 << 0) + +#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; + +#if DPDK_CRYPTO==1 +#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_GCM_128, "aes-gcm-128") +#else +#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") +#endif + +typedef enum +{ +#define _(v,f,s) IPSEC_CRYPTO_ALG_##f = v, + foreach_ipsec_crypto_alg +#undef _ + IPSEC_CRYPTO_N_ALG, +} ipsec_crypto_alg_t; + +#if DPDK_CRYPTO==1 +#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 */ \ + _(7, AES_GCM_128, "aes-gcm-128") +#else +#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 */ +#endif + +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; + 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; +} 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]; +} 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 +{ + u32 input_sa_index; + u32 output_sa_index; + u32 hw_if_index; +} ipsec_tunnel_if_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; + + /* node indexes */ + u32 error_drop_node_index; + u32 ip4_lookup_node_index; + u32 esp_encrypt_node_index; + +} ipsec_main_t; + +ipsec_main_t ipsec_main; + +extern vlib_node_registration_t esp_encrypt_node; +extern vlib_node_registration_t esp_decrypt_node; +extern vlib_node_registration_t ipsec_if_output_node; +extern vlib_node_registration_t ipsec_if_input_node; + + +/* + * functions + */ +int ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id, + int is_add); +int ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add); +int ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy, + int is_add); +int ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add); +int ipsec_set_sa_key (vlib_main_t * vm, ipsec_sa_t * sa_update); + +u32 ipsec_get_sa_index_by_sa_id (u32 sa_id); +u8 *format_ipsec_if_output_trace (u8 * s, va_list * args); +u8 *format_ipsec_policy_action (u8 * s, va_list * args); +u8 *format_ipsec_crypto_alg (u8 * s, va_list * args); +u8 *format_ipsec_integ_alg (u8 * s, va_list * args); +u8 *format_ipsec_replay_window (u8 * s, va_list * args); +uword unformat_ipsec_policy_action (unformat_input_t * input, va_list * args); +uword unformat_ipsec_crypto_alg (unformat_input_t * input, va_list * args); +uword unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args); + +/*u32 ipsec_add_del_tunnel_if (vnet_main_t * vnm, ipsec_add_del_tunnel_args_t * args); */ +int ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args); +int ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm, + ipsec_add_del_ipsec_gre_tunnel_args_t * + args); +int ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index, + ipsec_if_set_key_type_t type, u8 alg, u8 * key); + + +/* + * inline functions + */ + +always_inline void +ipsec_alloc_empty_buffers (vlib_main_t * vm, ipsec_main_t * im) +{ + u32 cpu_index = os_get_cpu_number (); + uword l = vec_len (im->empty_buffers[cpu_index]); + uword n_alloc = 0; + + if (PREDICT_FALSE (l < VLIB_FRAME_SIZE)) + { + if (!im->empty_buffers[cpu_index]) + { + vec_alloc (im->empty_buffers[cpu_index], 2 * VLIB_FRAME_SIZE); + } + + n_alloc = vlib_buffer_alloc (vm, im->empty_buffers[cpu_index] + l, + 2 * VLIB_FRAME_SIZE - l); + + _vec_len (im->empty_buffers[cpu_index]) = l + n_alloc; + } +} + +static_always_inline u32 +get_next_output_feature_node_index (vlib_buffer_t * b, + vlib_node_runtime_t * nr) +{ + u32 next; + u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX]; + vlib_main_t *vm = vlib_get_main (); + vlib_node_t *node = vlib_get_node (vm, nr->node_index); + + vnet_feature_next (sw_if_index, &next, b); + return node->next_nodes[next]; +} + +#endif /* __IPSEC_H__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |