/* Hey Emacs use -*- mode: C -*- */
/*
 * Copyright (c) 2015-2016 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.
 */

option version = "3.0.0";

import "vnet/ip/ip_types.api";

/** \brief IPsec: Add/delete Security Policy Database
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param is_add - add SPD if non-zero, else delete
    @param spd_id - SPD instance id (control plane allocated)
*/

autoreply define ipsec_spd_add_del
{
  u32 client_index;
  u32 context;
  u8 is_add;
  u32 spd_id;
};

/** \brief IPsec: Add/delete SPD from interface

    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param is_add - add security mode if non-zero, else delete
    @param sw_if_index - index of the interface
    @param spd_id - SPD instance id to use for lookups
*/


autoreply define ipsec_interface_add_del_spd
{
  u32 client_index;
  u32 context;

  u8 is_add;
  u32 sw_if_index;
  u32 spd_id;
};


enum ipsec_spd_action
{
  /* bypass - no IPsec processing */
  IPSEC_API_SPD_ACTION_BYPASS = 0,
  /* discard - discard packet with ICMP processing */
  IPSEC_API_SPD_ACTION_DISCARD,
  /* resolve - send request to control plane for SA resolving */
  IPSEC_API_SPD_ACTION_RESOLVE,
  /* protect - apply IPsec policy using following parameters */
  IPSEC_API_SPD_ACTION_PROTECT,
};

/** \brief IPsec: Security Policy Database entry

    See RFC 4301, 4.4.1.1 on how to match packet to selectors

    @param spd_id - SPD instance id (control plane allocated)
    @param priority - priority of SPD entry (non-unique value).  Used to order SPD matching - higher priorities match before lower
    @param is_outbound - entry applies to outbound traffic if non-zero, otherwise applies to inbound traffic
    @param remote_address_start - start of remote address range to match
    @param remote_address_stop - end of remote address range to match
    @param local_address_start - start of local address range to match
    @param local_address_stop - end of local address range to match
    @param protocol - protocol type to match [0 means any] otherwise IANA value
    @param remote_port_start - start of remote port range to match ...
    @param remote_port_stop - end of remote port range to match [0 to 65535 means ANY, 65535 to 0 means OPAQUE]
    @param local_port_start - start of local port range to match ...
    @param local_port_stop - end of remote port range to match [0 to 65535 means ANY, 65535 to 0 means OPAQUE]
    @param policy - action to perform on match
    @param sa_id - SAD instance id (control plane allocated)
*/
typedef ipsec_spd_entry
{
  u32 spd_id;
  i32 priority;
  u8 is_outbound;

  u32 sa_id;
  vl_api_ipsec_spd_action_t policy;
  u8 protocol;

  // Selector
  vl_api_address_t remote_address_start;
  vl_api_address_t remote_address_stop;
  vl_api_address_t local_address_start;
  vl_api_address_t local_address_stop;

  u16 remote_port_start;
  u16 remote_port_stop;
  u16 local_port_start;
  u16 local_port_stop;
};

/** \brief IPsec: Add/delete Security Policy Database entry

    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param is_add - add SPD if non-zero, else delete
    @param entry - Description of the entry to add/dell
*/
define ipsec_spd_entry_add_del
{
  u32 client_index;
  u32 context;
  u8 is_add;
  vl_api_ipsec_spd_entry_t entry;
};

/** \brief IPsec: Reply Add/delete Security Policy Database entry

    @param context - sender context, to match reply w/ request
    @param retval - success/fail rutrun code
    @param stat_index - An index for the policy in the stats segment @ /net/ipec/policy
*/
define ipsec_spd_entry_add_del_reply
{
  u32 context;
  i32 retval;
  u32 stat_index;
};

/** \brief Dump IPsec all SPD IDs
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
*/
define ipsec_spds_dump {
  u32 client_index;
  u32 context;
};

/** \brief Dump IPsec all SPD IDs response
    @param client_index - opaque cookie to identify the sender
    @param spd_id - SPD instance id (control plane allocated)
    @param npolicies - number of policies in SPD
*/
define ipsec_spds_details {
  u32 context;
  u32 spd_id;
  u32 npolicies;
}; 

/** \brief Dump ipsec policy database data
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param spd_id - SPD instance id
    @param sa_id - SA id, optional, set to ~0 to see all policies in SPD
*/
define ipsec_spd_dump {
    u32 client_index;
    u32 context;
    u32 spd_id;
    u32 sa_id;
};

/** \brief IPsec policy database response
    @param context - sender context which was passed in the request
    €param entry - The SPD entry.
    @param bytes - byte count of packets matching this policy
    @param packets - count of packets matching this policy
*/
define ipsec_spd_details {
    u32 context;
    vl_api_ipsec_spd_entry_t entry;
};

/*
 * @brief Support cryptographic algorithms
 */
enum ipsec_crypto_alg
{
  IPSEC_API_CRYPTO_ALG_NONE = 0,
  IPSEC_API_CRYPTO_ALG_AES_CBC_128,
  IPSEC_API_CRYPTO_ALG_AES_CBC_192,
  IPSEC_API_CRYPTO_ALG_AES_CBC_256,
  IPSEC_API_CRYPTO_ALG_AES_CTR_128,
  IPSEC_API_CRYPTO_ALG_AES_CTR_192,
  IPSEC_API_CRYPTO_ALG_AES_CTR_256,
  IPSEC_API_CRYPTO_ALG_AES_GCM_128,
  IPSEC_API_CRYPTO_ALG_AES_GCM_192,
  IPSEC_API_CRYPTO_ALG_AES_GCM_256,
  IPSEC_API_CRYPTO_ALG_DES_CBC,
  IPSEC_API_CRYPTO_ALG_3DES_CBC,
};

/*
 * @brief Supported Integrity Algorithms
 */
enum ipsec_integ_alg
{
  IPSEC_API_INTEG_ALG_NONE = 0,
  /* RFC2403 */
  IPSEC_API_INTEG_ALG_MD5_96,
  /* RFC2404 */
  IPSEC_API_INTEG_ALG_SHA1_96,
  /* draft-ietf-ipsec-ciph-sha-256-00 */
  IPSEC_API_INTEG_ALG_SHA_256_96,
  /* RFC4868 */
  IPSEC_API_INTEG_ALG_SHA_256_128,
  /* RFC4868 */
  IPSEC_API_INTEG_ALG_SHA_384_192,
  /* RFC4868 */
  IPSEC_API_INTEG_ALG_SHA_512_256,
};

enum ipsec_sad_flags
{
  IPSEC_API_SAD_FLAG_NONE = 0,
  /* Enable extended sequence numbers */
  IPSEC_API_SAD_FLAG_USE_ESN = 0x01,
  /* Enable Anti-replay */
  IPSEC_API_SAD_FLAG_USE_ANTI_REPLAY = 0x02,
  /* IPsec tunnel mode if non-zero, else transport mode */
  IPSEC_API_SAD_FLAG_IS_TUNNEL = 0x04,
  /* IPsec tunnel mode is IPv6 if non-zero,
   *  else IPv4 tunnel only valid if is_tunnel is non-zero */
  IPSEC_API_SAD_FLAG_IS_TUNNEL_V6 = 0x08,
  /* enable UDP encapsulation for NAT traversal */
  IPSEC_API_SAD_FLAG_UDP_ENCAP = 0x10,
};

enum ipsec_proto
{
  IPSEC_API_PROTO_ESP,
  IPSEC_API_PROTO_AH,
};

typedef key
{
  /* the length of the key */
  u8 length;
  /* The data for the key */
  u8 data[128];
};

/** \brief IPsec: Security Association Database entry
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param is_add - add SAD entry if non-zero, else delete
    @param sad_id - sad id
    @param spi - security parameter index
    @param protocol - 0 = AH, 1 = ESP
    @param crypto_algorithm - a supported crypto algorithm
    @param crypto_key - crypto keying material
    @param integrity_algorithm - one of the supported algorithms
    @param integrity_key - integrity keying material
    @param tunnel_src_address - IPsec tunnel source address IPv6 if is_tunnel_ipv6 is non-zero, else IPv4. Only valid if is_tunnel is non-zero
    @param tunnel_dst_address - IPsec tunnel destination address IPv6 if is_tunnel_ipv6 is non-zero, else IPv4. Only valid if is_tunnel is non-zero
    @param tx_table_id - the FIB id used for encapsulated packets
    @param salt - for use with counter mode ciphers
 */
typedef ipsec_sad_entry
{
  u32 sad_id;

  u32 spi;

  vl_api_ipsec_proto_t protocol;

  vl_api_ipsec_crypto_alg_t crypto_algorithm;
  vl_api_key_t crypto_key;

  vl_api_ipsec_integ_alg_t integrity_algorithm;
  vl_api_key_t integrity_key;

  vl_api_ipsec_sad_flags_t flags;

  vl_api_address_t tunnel_src;
  vl_api_address_t tunnel_dst;
  u32 tx_table_id;
  u32 salt;
};

/** \brief IPsec: Add/delete Security Association Database entry
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param entry - Entry to add or delete
 */
define ipsec_sad_entry_add_del
{
  u32 client_index;
  u32 context;
  u8 is_add;
  vl_api_ipsec_sad_entry_t entry;
};
define ipsec_sad_entry_add_del_reply
{
  u32 context;
  i32 retval;
  u32 stat_index;
};

/** \brief IPsec: Get SPD interfaces
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param spd_index - SPD index
    @param spd_index_valid - if 1 spd_index is used to filter
      spd_index's, if 0 no filtering is done
*/
define ipsec_spd_interface_dump {
    u32 client_index;
    u32 context;
    u32 spd_index;
    u8 spd_index_valid;
};

/** \brief IPsec: SPD interface response
    @param context - sender context which was passed in the request
    @param spd_index - SPD index
    @param sw_if_index - index of the interface
*/
define ipsec_spd_interface_details {
    u32 context;
    u32 spd_index;
    u32 sw_if_index;
};

/** \brief Add or delete IPsec tunnel interface
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param is_add - add IPsec tunnel interface if nonzero, else delete
    @param is_ip6 - tunnel v6 or v4
    @param esn - enable extended sequence numbers if nonzero, else disable
    @param anti_replay - enable anti replay check if nonzero, else disable
    @param local_ip - local IP address
    @param remote_ip - IP address of remote IPsec peer
    @param local_spi - SPI of outbound IPsec SA
    @param remote_spi - SPI of inbound IPsec SA
    @param crypto_alg - encryption algorithm ID
    @param local_crypto_key_len - length of local crypto key in bytes
    @param local_crypto_key - crypto key for outbound IPsec SA
    @param remote_crypto_key_len - length of remote crypto key in bytes
    @param remote_crypto_key - crypto key for inbound IPsec SA
    @param integ_alg - integrity algorithm ID
    @param local_integ_key_len - length of local integrity key in bytes
    @param local_integ_key - integrity key for outbound IPsec SA
    @param remote_integ_key_len - length of remote integrity key in bytes
    @param remote_integ_key - integrity key for inbound IPsec SA
    @param renumber - intf display name uses a specified instance if != 0
    @param show_instance - instance to display for intf if renumber is set
    @param udp_encap - enable UDP encapsulation for NAT traversal
    @param tx_table_id - the FIB id used after packet encap
    @param salt - for use with counter mode ciphers
*/
define ipsec_tunnel_if_add_del {
  u32 client_index;
  u32 context;
  u8 is_add;
  u8 esn;
  u8 anti_replay;
  vl_api_address_t local_ip;
  vl_api_address_t remote_ip;
  u32 local_spi;
  u32 remote_spi;
  u8 crypto_alg;
  u8 local_crypto_key_len;
  u8 local_crypto_key[128];
  u8 remote_crypto_key_len;
  u8 remote_crypto_key[128];
  u8 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;
  u8 udp_encap;
  u32 tx_table_id;
  u32 salt;
};

/** \brief Add/delete IPsec tunnel interface response
    @param context - sender context, to match reply w/ request
    @param retval - return status
    @param sw_if_index - sw_if_index of new interface (for successful add)
*/
define ipsec_tunnel_if_add_del_reply {
  u32 context;
  i32 retval;
  u32 sw_if_index;
};

/** \brief Dump IPsec security association
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param sa_id - optional ID of an SA to dump, if ~0 dump all SAs in SAD
*/
define ipsec_sa_dump {
  u32 client_index;
  u32 context;
  u32 sa_id;
};

/** \brief IPsec security association database response
    @param context - sender context which was passed in the request
    @param sa_id - SA ID, policy-based SAs >=0, tunnel interface SAs = 0 
    @param sw_if_index - sw_if_index of tunnel interface, policy-based SAs = ~0
    @param spi - security parameter index
    @param protocol - IPsec protocol (value from ipsec_protocol_t)
    @param crypto_alg - crypto algorithm (value from ipsec_crypto_alg_t)
    @param crypto_key_len - length of crypto_key in bytes
    @param crypto_key - crypto keying material
    @param integ_alg - integrity algorithm (value from ipsec_integ_alg_t)
    @param integ_key_len - length of integ_key in bytes
    @param integ_key - integrity keying material
    @param use_esn - using extended sequence numbers when non-zero
    @param use_anti_replay - using anti-replay window when non-zero
    @param is_tunnel - IPsec tunnel mode when non-zero, else transport mode
    @param is_tunnel_ipv6 - If using tunnel mode, endpoints are IPv6
    @param tunnel_src_addr - Tunnel source address if using tunnel mode
    @param tunnel_dst_addr - Tunnel destination address is using tunnel mode
    @param salt - 4 byte salt 
    @param seq - current sequence number for outbound
    @param seq_hi - high 32 bits of ESN for outbound 
    @param last_seq - highest sequence number received inbound
    @param last_seq_hi - high 32 bits of highest ESN received inbound
    @param replay_window - bit map of seq nums received relative to last_seq if using anti-replay
    @param total_data_size - total bytes sent or received
    @param udp_encap - 1 if UDP encap enabled, 0 otherwise
*/
define ipsec_sa_details {
  u32 context;
  vl_api_ipsec_sad_entry_t entry;

  u32 sw_if_index;
  u32 salt;
  u64 seq_outbound;
  u64 last_seq_inbound;
  u64 replay_window;

  u64 total_data_size;
};

/** \brief Set new SA on IPsec interface
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param sw_if_index - index of tunnel interface
    @param sa_id - ID of SA to use
    @param is_outbound - 1 if outbound (local) SA, 0 if inbound (remote)
*/
autoreply define ipsec_tunnel_if_set_sa {
  u32 client_index;
  u32 context;
  u32 sw_if_index;
  u32 sa_id;
  u8 is_outbound;
};

/** \brief Dump IPsec backends
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
*/
define ipsec_backend_dump {
  u32 client_index;
  u32 context;
};

/** \brief IPsec backend details
    @param name - name of the backend
    @param protocol - IPsec protocol (value from ipsec_protocol_t)
    @param index - backend index
    @param active - set to 1 if the backend is active, otherwise 0
*/
define ipsec_backend_details {
  u32 context;
  u8 name[128];
  vl_api_ipsec_proto_t protocol;
  u8 index;
  u8 active;
};

/** \brief Select IPsec backend
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param protocol - IPsec protocol (value from ipsec_protocol_t)
    @param index - backend index
*/
autoreply define ipsec_select_backend {
  u32 client_index;
  u32 context;
  vl_api_ipsec_proto_t protocol;
  u8 index;
};

/*
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
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