bfdd/bfdctl.h

   1 /*********************************************************************
   2  * Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the Free
   6  * Software Foundation; either version 2 of the License, or (at your option)
   7  * any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; see the file COPYING; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  17  *
  18  * bfdctl.h: all BFDd control socket protocol definitions.
  19  *
  20  * Authors
  21  * -------
  22  * Rafael Zalamena <rzalamena@opensourcerouting.org>
  23  */
  24
  25 #ifndef _BFDCTRL_H_
  26 #define _BFDCTRL_H_
  27
  28 #include <netinet/in.h>
  29
  30 #include <stdbool.h>
  31 #include <stdint.h>
  32
  33 /*
  34  * Auxiliary definitions
  35  */
  36 struct sockaddr_any {
  37         union {
  38                 struct sockaddr_in sa_sin;
  39                 struct sockaddr_in6 sa_sin6;
  40         };
  41 };
  42
  43 #ifndef MAXNAMELEN
  44 #define MAXNAMELEN 32
  45 #endif
  46
  47 #define BPC_DEF_DETECTMULTIPLIER 3
  48 #define BPC_DEF_RECEIVEINTERVAL 300  /* milliseconds */
  49 #define BPC_DEF_TRANSMITINTERVAL 300 /* milliseconds */
  50 #define BPC_DEF_ECHOINTERVAL 50      /* milliseconds */
  51
  52 /* Peer status */
  53 enum bfd_peer_status {
  54         BPS_SHUTDOWN = 0, /* == PTM_BFD_ADM_DOWN, "adm-down" */
  55         BPS_DOWN = 1,     /* == PTM_BFD_DOWN, "down" */
  56         BPS_INIT = 2,     /* == PTM_BFD_INIT, "init" */
  57         BPS_UP = 3,       /* == PTM_BFD_UP, "up" */
  58 };
  59
  60 struct bfd_peer_cfg {
  61         bool bpc_mhop;
  62         bool bpc_ipv4;
  63         struct sockaddr_any bpc_peer;
  64         struct sockaddr_any bpc_local;
  65
  66         bool bpc_has_label;
  67         char bpc_label[MAXNAMELEN];
  68
  69         bool bpc_has_localif;
  70         char bpc_localif[MAXNAMELEN + 1];
  71
  72         bool bpc_has_vrfname;
  73         char bpc_vrfname[MAXNAMELEN + 1];
  74
  75         bool bpc_has_detectmultiplier;
  76         uint8_t bpc_detectmultiplier;
  77
  78         bool bpc_has_recvinterval;
  79         uint64_t bpc_recvinterval;
  80
  81         bool bpc_has_txinterval;
  82         uint64_t bpc_txinterval;
  83
  84         bool bpc_has_echointerval;
  85         uint64_t bpc_echointerval;
  86
  87         bool bpc_echo;
  88         bool bpc_createonly;
  89         bool bpc_shutdown;
  90
  91         bool bpc_cbit;
  92
  93         /* Status information */
  94         enum bfd_peer_status bpc_bps;
  95         uint32_t bpc_id;
  96         uint32_t bpc_remoteid;
  97         uint8_t bpc_diag;
  98         uint8_t bpc_remotediag;
  99         uint8_t bpc_remote_detectmultiplier;
 100         uint64_t bpc_remote_recvinterval;
 101         uint64_t bpc_remote_txinterval;
 102         uint64_t bpc_remote_echointerval;
 103         uint64_t bpc_lastevent;
 104 };
 105
 106
 107 /*
 108  * Protocol definitions
 109  */
 110 enum bc_msg_version {
 111         BMV_VERSION_1 = 1,
 112 };
 113
 114 enum bc_msg_type {
 115         BMT_RESPONSE = 1,
 116         BMT_REQUEST_ADD = 2,
 117         BMT_REQUEST_DEL = 3,
 118         BMT_NOTIFY = 4,
 119         BMT_NOTIFY_ADD = 5,
 120         BMT_NOTIFY_DEL = 6,
 121 };
 122
 123 /* Notify flags to use with bcm_notify. */
 124 #define BCM_NOTIFY_ALL ((uint64_t)-1)
 125 #define BCM_NOTIFY_PEER_STATE (1ULL << 0)
 126 #define BCM_NOTIFY_CONFIG (1ULL << 1)
 127 #define BCM_NOTIFY_NONE 0
 128
 129 /* Response 'status' definitions. */
 130 #define BCM_RESPONSE_OK "ok"
 131 #define BCM_RESPONSE_ERROR "error"
 132
 133 /* Notify operation. */
 134 #define BCM_NOTIFY_PEER_STATUS "status"
 135 #define BCM_NOTIFY_CONFIG_ADD "add"
 136 #define BCM_NOTIFY_CONFIG_DELETE "delete"
 137 #define BCM_NOTIFY_CONFIG_UPDATE "update"
 138
 139 /* Notification special ID. */
 140 #define BCM_NOTIFY_ID 0
 141
 142 struct bfd_control_msg {
 143         /* Total length without the header. */
 144         uint32_t bcm_length;
 145         /*
 146          * Message request/response id.
 147          * All requests will have a correspondent response with the
 148          * same id.
 149          */
 150         uint16_t bcm_id;
 151         /* Message type. */
 152         uint8_t bcm_type;
 153         /* Message version. */
 154         uint8_t bcm_ver;
 155         /* Message payload. */
 156         uint8_t bcm_data[0];
 157 };
 158
 159 #endif