eigrpd/eigrp_packet.h

   1 /*
   2  * EIGRP General Sending and Receiving of EIGRP Packets.
   3  * Copyright (C) 2013-2016
   4  * Authors:
   5  *   Donnie Savage
   6  *   Jan Janovic
   7  *   Matej Perina
   8  *   Peter Orsag
   9  *   Peter Paluch
  10  *   Frantisek Gazo
  11  *   Tomas Hvorkovy
  12  *   Martin Kontsek
  13  *   Lukas Koribsky
  14  *
  15  * This file is part of GNU Zebra.
  16  *
  17  * GNU Zebra is free software; you can redistribute it and/or modify it
  18  * under the terms of the GNU General Public License as published by the
  19  * Free Software Foundation; either version 2, or (at your option) any
  20  * later version.
  21  *
  22  * GNU Zebra is distributed in the hope that it will be useful, but
  23  * WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  25  * General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License along
  28  * with this program; see the file COPYING; if not, write to the Free Software
  29  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  30  */
  31
  32 #ifndef _ZEBRA_EIGRP_PACKET_H
  33 #define _ZEBRA_EIGRP_PACKET_H
  34
  35 /*Prototypes*/
  36 extern int eigrp_read(struct thread *);
  37 extern int eigrp_write(struct thread *);
  38
  39 extern struct eigrp_packet *eigrp_packet_new(size_t, struct eigrp_neighbor *);
  40 extern struct eigrp_packet *eigrp_packet_duplicate(struct eigrp_packet *,
  41                                                    struct eigrp_neighbor *);
  42 extern void eigrp_packet_free(struct eigrp_packet *);
  43 extern void eigrp_packet_delete(struct eigrp_interface *);
  44 extern void eigrp_packet_header_init(int, struct eigrp *, struct stream *,
  45                                      uint32_t, uint32_t, uint32_t);
  46 extern void eigrp_packet_checksum(struct eigrp_interface *, struct stream *,
  47                                   uint16_t);
  48
  49 extern struct eigrp_fifo *eigrp_fifo_new(void);
  50 extern struct eigrp_packet *eigrp_fifo_next(struct eigrp_fifo *);
  51 extern struct eigrp_packet *eigrp_fifo_pop(struct eigrp_fifo *);
  52 extern void eigrp_fifo_push(struct eigrp_fifo *, struct eigrp_packet *);
  53 extern void eigrp_fifo_free(struct eigrp_fifo *);
  54 extern void eigrp_fifo_reset(struct eigrp_fifo *);
  55
  56 extern void eigrp_send_packet_reliably(struct eigrp_neighbor *);
  57
  58 extern struct TLV_IPv4_Internal_type *eigrp_read_ipv4_tlv(struct stream *);
  59 extern uint16_t eigrp_add_internalTLV_to_stream(struct stream *,
  60                                                 struct eigrp_prefix_entry *);
  61 extern uint16_t eigrp_add_authTLV_MD5_to_stream(struct stream *,
  62                                                 struct eigrp_interface *);
  63 extern uint16_t eigrp_add_authTLV_SHA256_to_stream(struct stream *,
  64                                                    struct eigrp_interface *);
  65
  66 extern int eigrp_unack_packet_retrans(struct thread *);
  67 extern int eigrp_unack_multicast_packet_retrans(struct thread *);
  68
  69 /*
  70  * untill there is reason to have their own header, these externs are found in
  71  * eigrp_hello.c
  72  */
  73 extern void eigrp_sw_version_initialize(void);
  74 extern void eigrp_hello_send(struct eigrp_interface *, uint8_t,
  75                              struct in_addr *);
  76 extern void eigrp_hello_send_ack(struct eigrp_neighbor *);
  77 extern void eigrp_hello_receive(struct eigrp *, struct ip *,
  78                                 struct eigrp_header *, struct stream *,
  79                                 struct eigrp_interface *, int);
  80 extern int eigrp_hello_timer(struct thread *);
  81
  82 /*
  83  * These externs are found in eigrp_update.c
  84  */
  85 extern bool eigrp_update_prefix_apply(struct eigrp *eigrp,
  86                                       struct eigrp_interface *ei, int in,
  87                                       struct prefix *prefix);
  88 extern void eigrp_update_send(struct eigrp_interface *);
  89 extern void eigrp_update_receive(struct eigrp *, struct ip *,
  90                                  struct eigrp_header *, struct stream *,
  91                                  struct eigrp_interface *, int);
  92 extern void eigrp_update_send_all(struct eigrp *, struct eigrp_interface *);
  93 extern void eigrp_update_send_init(struct eigrp_neighbor *);
  94 extern void eigrp_update_send_EOT(struct eigrp_neighbor *);
  95 extern int eigrp_update_send_GR_thread(struct thread *);
  96 extern void eigrp_update_send_GR(struct eigrp_neighbor *, enum GR_type,
  97                                  struct vty *);
  98 extern void eigrp_update_send_interface_GR(struct eigrp_interface *,
  99                                            enum GR_type, struct vty *);
 100 extern void eigrp_update_send_process_GR(struct eigrp *, enum GR_type,
 101                                          struct vty *);
 102
 103 /*
 104  * These externs are found in eigrp_query.c
 105  */
 106
 107 extern void eigrp_send_query(struct eigrp_interface *);
 108 extern void eigrp_query_receive(struct eigrp *, struct ip *,
 109                                 struct eigrp_header *, struct stream *,
 110                                 struct eigrp_interface *, int);
 111 extern uint32_t eigrp_query_send_all(struct eigrp *);
 112
 113 /*
 114  * These externs are found in eigrp_reply.c
 115  */
 116 extern void eigrp_send_reply(struct eigrp_neighbor *,
 117                              struct eigrp_prefix_entry *);
 118 extern void eigrp_reply_receive(struct eigrp *, struct ip *,
 119                                 struct eigrp_header *, struct stream *,
 120                                 struct eigrp_interface *, int);
 121
 122 /*
 123  * These externs are found in eigrp_siaquery.c
 124  */
 125 extern void eigrp_send_siaquery(struct eigrp_neighbor *,
 126                                 struct eigrp_prefix_entry *);
 127 extern void eigrp_siaquery_receive(struct eigrp *, struct ip *,
 128                                    struct eigrp_header *, struct stream *,
 129                                    struct eigrp_interface *, int);
 130
 131 /*
 132  * These externs are found in eigrp_siareply.c
 133  */
 134 extern void eigrp_send_siareply(struct eigrp_neighbor *,
 135                                 struct eigrp_prefix_entry *);
 136 extern void eigrp_siareply_receive(struct eigrp *, struct ip *,
 137                                    struct eigrp_header *, struct stream *,
 138                                    struct eigrp_interface *, int);
 139
 140 extern struct TLV_MD5_Authentication_Type *eigrp_authTLV_MD5_new(void);
 141 extern void eigrp_authTLV_MD5_free(struct TLV_MD5_Authentication_Type *);
 142 extern struct TLV_SHA256_Authentication_Type *eigrp_authTLV_SHA256_new(void);
 143 extern void eigrp_authTLV_SHA256_free(struct TLV_SHA256_Authentication_Type *);
 144
 145 extern int eigrp_make_md5_digest(struct eigrp_interface *, struct stream *,
 146                                  uint8_t);
 147 extern int eigrp_check_md5_digest(struct stream *,
 148                                   struct TLV_MD5_Authentication_Type *,
 149                                   struct eigrp_neighbor *, uint8_t);
 150 extern int eigrp_make_sha256_digest(struct eigrp_interface *, struct stream *,
 151                                     uint8_t);
 152 extern int eigrp_check_sha256_digest(struct stream *,
 153                                      struct TLV_SHA256_Authentication_Type *,
 154                                      struct eigrp_neighbor *, uint8_t);
 155
 156
 157 extern void eigrp_IPv4_InternalTLV_free(struct TLV_IPv4_Internal_type *);
 158
 159 extern struct TLV_Sequence_Type *eigrp_SequenceTLV_new(void);
 160
 161 extern const struct message eigrp_packet_type_str[];
 162 extern const size_t eigrp_packet_type_str_max;
 163
 164 #endif /* _ZEBRA_EIGRP_PACKET_H */