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 *,
  45                                      struct stream *, u_int32_t, u_int32_t,
  46                                      u_int32_t);
  47 extern void eigrp_packet_checksum(struct eigrp_interface *, struct stream *,
  48                                   u_int16_t);
  49
  50 extern struct eigrp_fifo *eigrp_fifo_new(void);
  51 extern struct eigrp_packet *eigrp_fifo_next(struct eigrp_fifo *);
  52 extern struct eigrp_packet *eigrp_fifo_pop(struct eigrp_fifo *);
  53 extern void eigrp_fifo_push(struct eigrp_fifo *, struct eigrp_packet *);
  54 extern void eigrp_fifo_free(struct eigrp_fifo *);
  55 extern void eigrp_fifo_reset(struct eigrp_fifo *);
  56
  57 extern void eigrp_send_packet_reliably(struct eigrp_neighbor *);
  58
  59 extern struct TLV_IPv4_Internal_type *eigrp_read_ipv4_tlv(struct stream *);
  60 extern u_int16_t eigrp_add_internalTLV_to_stream(struct stream *,
  61                                                  struct eigrp_prefix_entry *);
  62 extern u_int16_t eigrp_add_authTLV_MD5_to_stream(struct stream *,
  63                                                  struct eigrp_interface *);
  64 extern u_int16_t eigrp_add_authTLV_SHA256_to_stream(struct stream *,
  65                                                     struct eigrp_interface *);
  66
  67 extern int eigrp_unack_packet_retrans(struct thread *);
  68 extern int eigrp_unack_multicast_packet_retrans(struct thread *);
  69
  70 /*
  71  * untill there is reason to have their own header, these externs are found in
  72  * eigrp_hello.c
  73  */
  74 extern void eigrp_hello_send(struct eigrp_interface *, u_char,
  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 void eigrp_update_send(struct eigrp_interface *);
  86 extern void eigrp_update_receive(struct eigrp *, struct ip *,
  87                                  struct eigrp_header *, struct stream *,
  88                                  struct eigrp_interface *, int);
  89 extern void eigrp_update_send_all(struct eigrp *, struct eigrp_interface *);
  90 extern void eigrp_update_send_init(struct eigrp_neighbor *);
  91 extern void eigrp_update_send_EOT(struct eigrp_neighbor *);
  92 extern int eigrp_update_send_GR_thread(struct thread *);
  93 extern void eigrp_update_send_GR(struct eigrp_neighbor *, enum GR_type,
  94                                  struct vty *);
  95 extern void eigrp_update_send_interface_GR(struct eigrp_interface *,
  96                                            enum GR_type, struct vty *);
  97 extern void eigrp_update_send_process_GR(struct eigrp *, enum GR_type,
  98                                          struct vty *);
  99
 100 /*
 101  * These externs are found in eigrp_query.c
 102  */
 103
 104 extern void eigrp_send_query(struct eigrp_interface *);
 105 extern void eigrp_query_receive(struct eigrp *, struct ip *,
 106                                 struct eigrp_header *, struct stream *,
 107                                 struct eigrp_interface *, int);
 108 extern u_int32_t eigrp_query_send_all(struct eigrp *);
 109
 110 /*
 111  * These externs are found in eigrp_reply.c
 112  */
 113 extern void eigrp_send_reply(struct eigrp_neighbor *,
 114                              struct eigrp_prefix_entry *);
 115 extern void eigrp_reply_receive(struct eigrp *, struct ip *,
 116                                 struct eigrp_header *, struct stream *,
 117                                 struct eigrp_interface *, int);
 118
 119 /*
 120  * These externs are found in eigrp_siaquery.c
 121  */
 122 extern void eigrp_send_siaquery(struct eigrp_neighbor *,
 123                                 struct eigrp_prefix_entry *);
 124 extern void eigrp_siaquery_receive(struct eigrp *, struct ip *,
 125                                    struct eigrp_header *, struct stream *,
 126                                    struct eigrp_interface *, int);
 127
 128 /*
 129  * These externs are found in eigrp_siareply.c
 130  */
 131 extern void eigrp_send_siareply(struct eigrp_neighbor *,
 132                                 struct eigrp_prefix_entry *);
 133 extern void eigrp_siareply_receive(struct eigrp *, struct ip *,
 134                                    struct eigrp_header *, struct stream *,
 135                                    struct eigrp_interface *, int);
 136
 137 extern struct TLV_MD5_Authentication_Type *eigrp_authTLV_MD5_new(void);
 138 extern void eigrp_authTLV_MD5_free(struct TLV_MD5_Authentication_Type *);
 139 extern struct TLV_SHA256_Authentication_Type *eigrp_authTLV_SHA256_new(void);
 140 extern void eigrp_authTLV_SHA256_free(struct TLV_SHA256_Authentication_Type *);
 141
 142 extern int eigrp_make_md5_digest(struct eigrp_interface *, struct stream *,
 143                                  u_char);
 144 extern int eigrp_check_md5_digest(struct stream *,
 145                                   struct TLV_MD5_Authentication_Type *,
 146                                   struct eigrp_neighbor *, u_char);
 147 extern int eigrp_make_sha256_digest(struct eigrp_interface *, struct stream *,
 148                                     u_char);
 149 extern int eigrp_check_sha256_digest(struct stream *,
 150                                      struct TLV_SHA256_Authentication_Type *,
 151                                      struct eigrp_neighbor *, u_char);
 152
 153
 154 extern struct TLV_IPv4_Internal_type *eigrp_IPv4_InternalTLV_new(void);
 155 extern void eigrp_IPv4_InternalTLV_free(struct TLV_IPv4_Internal_type *);
 156
 157 extern struct TLV_Sequence_Type *eigrp_SequenceTLV_new(void);
 158
 159 extern const struct message eigrp_packet_type_str[];
 160 extern const size_t eigrp_packet_type_str_max;
 161
 162 #endif /* _ZEBRA_EIGRP_PACKET_H */