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);
  40 extern struct eigrp_packet *eigrp_packet_duplicate (struct eigrp_packet *, struct eigrp_neighbor *);
  41 extern void eigrp_packet_free (struct eigrp_packet *);
  42 extern void eigrp_packet_delete (struct eigrp_interface *);
  43 extern void eigrp_packet_header_init (int, struct eigrp_interface *, struct stream *,
  44                                      u_int32_t, u_int32_t, u_int32_t);
  45 extern void eigrp_packet_checksum (struct eigrp_interface *, struct stream *, u_int16_t);
  46
  47 extern struct eigrp_fifo *eigrp_fifo_new (void);
  48 extern struct eigrp_packet *eigrp_fifo_head (struct eigrp_fifo *);
  49 extern struct eigrp_packet *eigrp_fifo_tail (struct eigrp_fifo *);
  50 extern struct eigrp_packet *eigrp_fifo_pop (struct eigrp_fifo *);
  51 extern struct eigrp_packet *eigrp_fifo_pop_tail (struct eigrp_fifo *);
  52 extern void eigrp_fifo_push_head (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 u_int16_t eigrp_add_internalTLV_to_stream (struct stream *, struct eigrp_prefix_entry *);
  60 extern u_int16_t eigrp_add_authTLV_MD5_to_stream (struct stream *, struct eigrp_interface *);
  61 extern u_int16_t eigrp_add_authTLV_SHA256_to_stream (struct stream *, struct eigrp_interface *);
  62
  63 extern int eigrp_unack_packet_retrans (struct thread *);
  64 extern int eigrp_unack_multicast_packet_retrans (struct thread *);
  65
  66 /*
  67  * untill there is reason to have their own header, these externs are found in
  68  * eigrp_hello.c
  69  */
  70 extern void eigrp_hello_send (struct eigrp_interface *, u_char, struct in_addr *);
  71 extern void eigrp_hello_send_ack (struct eigrp_neighbor *);
  72 extern void eigrp_hello_receive (struct eigrp *, struct ip *, struct eigrp_header *,
  73                                 struct stream *, struct eigrp_interface *, int);
  74 extern int  eigrp_hello_timer (struct thread *);
  75
  76 /*
  77  * These externs are found in eigrp_update.c
  78  */
  79 extern void eigrp_update_send (struct eigrp_interface *);
  80 extern void eigrp_update_receive (struct eigrp *, struct ip *, struct eigrp_header *,
  81                                 struct stream *, struct eigrp_interface *, int);
  82 extern void eigrp_update_send_all (struct eigrp *, struct eigrp_interface *);
  83 extern void eigrp_update_send_init (struct eigrp_neighbor *);
  84 extern void eigrp_update_send_EOT (struct eigrp_neighbor *);
  85 extern int eigrp_update_send_GR_thread(struct thread *);
  86 extern void eigrp_update_send_GR (struct eigrp_neighbor *, enum GR_type, struct vty *);
  87 extern void eigrp_update_send_interface_GR (struct eigrp_interface *, enum GR_type, struct vty *);
  88 extern void eigrp_update_send_process_GR (struct eigrp *, enum GR_type, struct vty *);
  89
  90 /*
  91  * These externs are found in eigrp_query.c
  92  */
  93
  94 extern void eigrp_send_query (struct eigrp_interface *);
  95 extern void eigrp_query_receive (struct eigrp *, struct ip *, struct eigrp_header *,
  96                                  struct stream *, struct eigrp_interface *, int);
  97 extern u_int32_t eigrp_query_send_all (struct eigrp *);
  98
  99 /*
 100  * These externs are found in eigrp_reply.c
 101  */
 102 extern void eigrp_send_reply (struct eigrp_neighbor *, struct eigrp_prefix_entry *);
 103 extern void eigrp_reply_receive (struct eigrp *, struct ip *, struct eigrp_header *,
 104                                  struct stream *, struct eigrp_interface *, int);
 105
 106 /*
 107  * These externs are found in eigrp_siaquery.c
 108  */
 109 extern void eigrp_send_siaquery (struct eigrp_neighbor *, struct eigrp_prefix_entry *);
 110 extern void eigrp_siaquery_receive (struct eigrp *, struct ip *, struct eigrp_header *,
 111                      struct stream *, struct eigrp_interface *, int);
 112
 113 /*
 114  * These externs are found in eigrp_siareply.c
 115  */
 116 extern void eigrp_send_siareply (struct eigrp_neighbor *, struct eigrp_prefix_entry *);
 117 extern void eigrp_siareply_receive (struct eigrp *, struct ip *, struct eigrp_header *,
 118                      struct stream *, struct eigrp_interface *, int);
 119
 120 extern struct TLV_MD5_Authentication_Type *eigrp_authTLV_MD5_new (void);
 121 extern void eigrp_authTLV_MD5_free (struct TLV_MD5_Authentication_Type *);
 122 extern struct TLV_SHA256_Authentication_Type *eigrp_authTLV_SHA256_new (void);
 123 extern void eigrp_authTLV_SHA256_free (struct TLV_SHA256_Authentication_Type *);
 124
 125 extern int eigrp_make_md5_digest (struct eigrp_interface *, struct stream *,
 126                                   u_char);
 127 extern int eigrp_check_md5_digest (struct stream *, struct TLV_MD5_Authentication_Type *,
 128                             struct eigrp_neighbor *, u_char);
 129 extern int eigrp_make_sha256_digest (struct eigrp_interface *, struct stream *, u_char);
 130 extern int eigrp_check_sha256_digest (struct stream *, struct TLV_SHA256_Authentication_Type *,
 131                             struct eigrp_neighbor *, u_char );
 132
 133
 134 extern struct TLV_IPv4_Internal_type *eigrp_IPv4_InternalTLV_new (void);
 135 extern void eigrp_IPv4_InternalTLV_free (struct TLV_IPv4_Internal_type *);
 136
 137 extern struct TLV_Sequence_Type *eigrp_SequenceTLV_new (void);
 138
 139 extern const struct message eigrp_packet_type_str[];
 140 extern const size_t eigrp_packet_type_str_max;
 141
 142 #endif /* _ZEBRA_EIGRP_PACKET_H */