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
  28  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  29  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  30  * 02111-1307, USA.
  31  */
  32
  33 #ifndef _ZEBRA_EIGRP_PACKET_H
  34 #define _ZEBRA_EIGRP_PACKET_H
  35
  36 /*Prototypes*/
  37 extern int eigrp_read (struct thread *);
  38 extern int eigrp_write (struct thread *);
  39
  40 extern struct eigrp_packet *eigrp_packet_new (size_t);
  41 extern struct eigrp_packet *eigrp_packet_duplicate (struct eigrp_packet *, 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_interface *, struct stream *,
  45                                      u_int32_t, u_int32_t, u_int32_t);
  46 extern void eigrp_packet_checksum (struct eigrp_interface *, struct stream *, u_int16_t);
  47
  48 extern struct eigrp_fifo *eigrp_fifo_new (void);
  49 extern struct eigrp_packet *eigrp_fifo_head (struct eigrp_fifo *);
  50 extern struct eigrp_packet *eigrp_fifo_tail (struct eigrp_fifo *);
  51 extern struct eigrp_packet *eigrp_fifo_pop (struct eigrp_fifo *);
  52 extern struct eigrp_packet *eigrp_fifo_pop_tail (struct eigrp_fifo *);
  53 extern void eigrp_fifo_push_head (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 *, struct eigrp_prefix_entry *);
  61 extern u_int16_t eigrp_add_authTLV_MD5_to_stream (struct stream *, struct eigrp_interface *);
  62 extern u_int16_t eigrp_add_authTLV_SHA256_to_stream (struct stream *, struct eigrp_interface *);
  63
  64 extern int eigrp_unack_packet_retrans (struct thread *);
  65 extern int eigrp_unack_multicast_packet_retrans (struct thread *);
  66
  67 /*
  68  * untill there is reason to have their own header, these externs are found in
  69  * eigrp_hello.c
  70  */
  71 extern void eigrp_hello_send (struct eigrp_interface *, u_char, struct in_addr *);
  72 extern void eigrp_hello_send_ack (struct eigrp_neighbor *);
  73 extern void eigrp_hello_receive (struct eigrp *, struct ip *, struct eigrp_header *,
  74                                 struct stream *, struct eigrp_interface *, int);
  75 extern int  eigrp_hello_timer (struct thread *);
  76
  77 /*
  78  * These externs are found in eigrp_update.c
  79  */
  80 extern void eigrp_update_send (struct eigrp_interface *);
  81 extern void eigrp_update_receive (struct eigrp *, struct ip *, struct eigrp_header *,
  82                                 struct stream *, struct eigrp_interface *, int);
  83 extern void eigrp_update_send_all (struct eigrp *, struct eigrp_interface *);
  84 extern void eigrp_update_send_init (struct eigrp_neighbor *);
  85 extern void eigrp_update_send_EOT (struct eigrp_neighbor *);
  86 extern int eigrp_update_send_GR_thread(struct thread *);
  87 extern void eigrp_update_send_GR (struct eigrp_neighbor *, enum GR_type, struct vty *);
  88 extern void eigrp_update_send_interface_GR (struct eigrp_interface *, enum GR_type, struct vty *);
  89 extern void eigrp_update_send_process_GR (struct eigrp *, enum GR_type, struct vty *);
  90
  91 /*
  92  * These externs are found in eigrp_query.c
  93  */
  94
  95 extern void eigrp_send_query (struct eigrp_interface *);
  96 extern void eigrp_query_receive (struct eigrp *, struct ip *, struct eigrp_header *,
  97                                  struct stream *, struct eigrp_interface *, int);
  98 extern u_int32_t eigrp_query_send_all (struct eigrp *);
  99
 100 /*
 101  * These externs are found in eigrp_reply.c
 102  */
 103 extern void eigrp_send_reply (struct eigrp_neighbor *, struct eigrp_prefix_entry *);
 104 extern void eigrp_reply_receive (struct eigrp *, struct ip *, struct eigrp_header *,
 105                                  struct stream *, struct eigrp_interface *, int);
 106
 107 /*
 108  * These externs are found in eigrp_siaquery.c
 109  */
 110 extern void eigrp_send_siaquery (struct eigrp_neighbor *, struct eigrp_prefix_entry *);
 111 extern void eigrp_siaquery_receive (struct eigrp *, struct ip *, struct eigrp_header *,
 112                      struct stream *, struct eigrp_interface *, int);
 113
 114 /*
 115  * These externs are found in eigrp_siareply.c
 116  */
 117 extern void eigrp_send_siareply (struct eigrp_neighbor *, struct eigrp_prefix_entry *);
 118 extern void eigrp_siareply_receive (struct eigrp *, struct ip *, struct eigrp_header *,
 119                      struct stream *, struct eigrp_interface *, int);
 120
 121 extern struct TLV_MD5_Authentication_Type *eigrp_authTLV_MD5_new (void);
 122 extern void eigrp_authTLV_MD5_free (struct TLV_MD5_Authentication_Type *);
 123 extern struct TLV_SHA256_Authentication_Type *eigrp_authTLV_SHA256_new (void);
 124 extern void eigrp_authTLV_SHA256_free (struct TLV_SHA256_Authentication_Type *);
 125
 126 extern int eigrp_make_md5_digest (struct eigrp_interface *, struct stream *,
 127                                   u_char);
 128 extern int eigrp_check_md5_digest (struct stream *, struct TLV_MD5_Authentication_Type *,
 129                             struct eigrp_neighbor *, u_char);
 130 extern int eigrp_make_sha256_digest (struct eigrp_interface *, struct stream *, u_char);
 131 extern int eigrp_check_sha256_digest (struct stream *, struct TLV_SHA256_Authentication_Type *,
 132                             struct eigrp_neighbor *, u_char );
 133
 134
 135 extern struct TLV_IPv4_Internal_type *eigrp_IPv4_InternalTLV_new (void);
 136 extern void eigrp_IPv4_InternalTLV_free (struct TLV_IPv4_Internal_type *);
 137
 138 extern struct TLV_Sequence_Type *eigrp_SequenceTLV_new (void);
 139
 140 extern const struct message eigrp_packet_type_str[];
 141 extern const size_t eigrp_packet_type_str_max;
 142
 143 #endif /* _ZEBRA_EIGRP_PACKET_H */