bgpd/bgp_packet.h

   1 /* BGP packet management header.
   2  * Copyright (C) 1999 Kunihiro Ishiguro
   3  *
   4  * This file is part of GNU Zebra.
   5  *
   6  * GNU Zebra is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * GNU Zebra is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef _QUAGGA_BGP_PACKET_H
  22 #define _QUAGGA_BGP_PACKET_H
  23
  24 #include "hook.h"
  25
  26 DECLARE_HOOK(bgp_packet_dump,
  27                 (struct peer *peer, uint8_t type, bgp_size_t size,
  28                         struct stream *s),
  29                 (peer, type, size, s))
  30
  31 DECLARE_HOOK(bgp_packet_send,
  32                 (struct peer *peer, uint8_t type, bgp_size_t size,
  33                         struct stream *s),
  34                 (peer, type, size, s))
  35
  36 #define BGP_NLRI_LENGTH       1U
  37 #define BGP_TOTAL_ATTR_LEN    2U
  38 #define BGP_UNFEASIBLE_LEN    2U
  39
  40 /* When to refresh */
  41 #define REFRESH_IMMEDIATE 1
  42 #define REFRESH_DEFER     2
  43
  44 /* ORF Common part flag */
  45 #define ORF_COMMON_PART_ADD        0x00
  46 #define ORF_COMMON_PART_REMOVE     0x80
  47 #define ORF_COMMON_PART_REMOVE_ALL 0xC0
  48 #define ORF_COMMON_PART_PERMIT     0x00
  49 #define ORF_COMMON_PART_DENY       0x20
  50
  51 #define BGP_UPDATE_EOR_PKT(_peer, _afi, _safi, _s)                             \
  52         do {                                                                   \
  53                 _s = bgp_update_packet_eor(_peer, _afi, _safi);                \
  54                 if (_s) {                                                      \
  55                         bgp_packet_add(_peer, _s);                             \
  56                 }                                                              \
  57         } while (0)
  58
  59 /* Packet send and receive function prototypes. */
  60 extern void bgp_keepalive_send(struct peer *);
  61 extern void bgp_open_send(struct peer *);
  62 extern void bgp_notify_send(struct peer *, uint8_t, uint8_t);
  63 extern void bgp_notify_send_with_data(struct peer *, uint8_t, uint8_t,
  64                                       uint8_t *, size_t);
  65 extern void bgp_route_refresh_send(struct peer *, afi_t, safi_t, uint8_t,
  66                                    uint8_t, int);
  67 extern void bgp_capability_send(struct peer *, afi_t, safi_t, int, int);
  68
  69 extern int bgp_capability_receive(struct peer *, bgp_size_t);
  70
  71 extern int bgp_nlri_parse(struct peer *, struct attr *, struct bgp_nlri *,
  72                           int mp_withdraw);
  73
  74 extern void bgp_update_restarted_peers(struct peer *);
  75 extern void bgp_update_implicit_eors(struct peer *);
  76 extern void bgp_check_update_delay(struct bgp *);
  77
  78 extern int bgp_packet_set_marker(struct stream *s, uint8_t type);
  79 extern int bgp_packet_set_size(struct stream *s);
  80
  81 extern int bgp_generate_updgrp_packets(struct thread *);
  82 extern int bgp_process_packet(struct thread *);
  83
  84 extern void bgp_send_delayed_eor(struct bgp *bgp);
  85 #endif /* _QUAGGA_BGP_PACKET_H */