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-rw-r--r--src/vnet/ipsec/ipsec.h344
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diff --git a/src/vnet/ipsec/ipsec.h b/src/vnet/ipsec/ipsec.h
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+++ b/src/vnet/ipsec/ipsec.h
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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__
+
+#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:
+ */