eigrpd/eigrp_packet.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * EIGRP General Sending and Receiving of EIGRP Packets.
   4  * Copyright (C) 2013-2016
   5  * Authors:
   6  *   Donnie Savage
   7  *   Jan Janovic
   8  *   Matej Perina
   9  *   Peter Orsag
  10  *   Peter Paluch
  11  *   Frantisek Gazo
  12  *   Tomas Hvorkovy
  13  *   Martin Kontsek
  14  *   Lukas Koribsky
  15  */
  16
  17 #ifndef _ZEBRA_EIGRP_PACKET_H
  18 #define _ZEBRA_EIGRP_PACKET_H
  19
  20 /*Prototypes*/
  21 extern void eigrp_read(struct event *thread);
  22 extern void eigrp_write(struct event *thread);
  23
  24 extern struct eigrp_packet *eigrp_packet_new(size_t size,
  25                                              struct eigrp_neighbor *nbr);
  26 extern struct eigrp_packet *eigrp_packet_duplicate(struct eigrp_packet *old,
  27                                                    struct eigrp_neighbor *nbr);
  28 extern void eigrp_packet_free(struct eigrp_packet *ep);
  29 extern void eigrp_packet_delete(struct eigrp_interface *ei);
  30 extern void eigrp_packet_header_init(int type, struct eigrp *eigrp,
  31                                      struct stream *s, uint32_t flags,
  32                                      uint32_t sequence, uint32_t ack);
  33 extern void eigrp_packet_checksum(struct eigrp_interface *ei, struct stream *s,
  34                                   uint16_t length);
  35
  36 extern struct eigrp_fifo *eigrp_fifo_new(void);
  37 extern struct eigrp_packet *eigrp_fifo_next(struct eigrp_fifo *fifo);
  38 extern struct eigrp_packet *eigrp_fifo_pop(struct eigrp_fifo *fifo);
  39 extern void eigrp_fifo_push(struct eigrp_fifo *fifo, struct eigrp_packet *ep);
  40 extern void eigrp_fifo_free(struct eigrp_fifo *fifo);
  41 extern void eigrp_fifo_reset(struct eigrp_fifo *fifo);
  42
  43 extern void eigrp_send_packet_reliably(struct eigrp_neighbor *nbr);
  44
  45 extern struct TLV_IPv4_Internal_type *eigrp_read_ipv4_tlv(struct stream *s);
  46 extern uint16_t
  47 eigrp_add_internalTLV_to_stream(struct stream *s,
  48                                 struct eigrp_prefix_descriptor *pe);
  49 extern uint16_t eigrp_add_authTLV_MD5_to_stream(struct stream *s,
  50                                                 struct eigrp_interface *ei);
  51 extern uint16_t eigrp_add_authTLV_SHA256_to_stream(struct stream *s,
  52                                                    struct eigrp_interface *ei);
  53
  54 extern void eigrp_unack_packet_retrans(struct event *thread);
  55 extern void eigrp_unack_multicast_packet_retrans(struct event *thread);
  56
  57 /*
  58  * untill there is reason to have their own header, these externs are found in
  59  * eigrp_hello.c
  60  */
  61 extern void eigrp_sw_version_initialize(void);
  62 extern void eigrp_hello_send(struct eigrp_interface *ei, uint8_t flags,
  63                              struct in_addr *nbr_addr);
  64 extern void eigrp_hello_send_ack(struct eigrp_neighbor *nbr);
  65 extern void eigrp_hello_receive(struct eigrp *eigrp, struct ip *iph,
  66                                 struct eigrp_header *eigrph, struct stream *s,
  67                                 struct eigrp_interface *ei, int size);
  68 extern void eigrp_hello_timer(struct event *thread);
  69
  70 /*
  71  * These externs are found in eigrp_update.c
  72  */
  73 extern bool eigrp_update_prefix_apply(struct eigrp *eigrp,
  74                                       struct eigrp_interface *ei, int in,
  75                                       struct prefix *prefix);
  76 extern void eigrp_update_send(struct eigrp_interface *ei);
  77 extern void eigrp_update_receive(struct eigrp *eigrp, struct ip *iph,
  78                                  struct eigrp_header *eigrph, struct stream *s,
  79                                  struct eigrp_interface *ei, int size);
  80 extern void eigrp_update_send_all(struct eigrp *eigrp,
  81                                   struct eigrp_interface *exception);
  82 extern void eigrp_update_send_init(struct eigrp_neighbor *nbr);
  83 extern void eigrp_update_send_EOT(struct eigrp_neighbor *nbr);
  84 extern void eigrp_update_send_GR_thread(struct event *thread);
  85 extern void eigrp_update_send_GR(struct eigrp_neighbor *nbr,
  86                                  enum GR_type gr_type, struct vty *vty);
  87 extern void eigrp_update_send_interface_GR(struct eigrp_interface *ei,
  88                                            enum GR_type gr_type,
  89                                            struct vty *vty);
  90 extern void eigrp_update_send_process_GR(struct eigrp *eigrp,
  91                                          enum GR_type gr_type, struct vty *vty);
  92
  93 /*
  94  * These externs are found in eigrp_query.c
  95  */
  96
  97 extern void eigrp_send_query(struct eigrp_interface *ei);
  98 extern void eigrp_query_receive(struct eigrp *eigrp, struct ip *iph,
  99                                 struct eigrp_header *eigrph, struct stream *s,
 100                                 struct eigrp_interface *ei, int size);
 101 extern uint32_t eigrp_query_send_all(struct eigrp *eigrp);
 102
 103 /*
 104  * These externs are found in eigrp_reply.c
 105  */
 106 extern void eigrp_send_reply(struct eigrp_neighbor *nbr,
 107                              struct eigrp_prefix_descriptor *pe);
 108 extern void eigrp_reply_receive(struct eigrp *eigrp, struct ip *iph,
 109                                 struct eigrp_header *eigrph, struct stream *s,
 110                                 struct eigrp_interface *ei, int size);
 111
 112 /*
 113  * These externs are found in eigrp_siaquery.c
 114  */
 115 extern void eigrp_send_siaquery(struct eigrp_neighbor *nbr,
 116                                 struct eigrp_prefix_descriptor *pe);
 117 extern void eigrp_siaquery_receive(struct eigrp *eigrp, struct ip *iph,
 118                                    struct eigrp_header *eigrph,
 119                                    struct stream *s, struct eigrp_interface *ei,
 120                                    int size);
 121
 122 /*
 123  * These externs are found in eigrp_siareply.c
 124  */
 125 extern void eigrp_send_siareply(struct eigrp_neighbor *nbr,
 126                                 struct eigrp_prefix_descriptor *pe);
 127 extern void eigrp_siareply_receive(struct eigrp *eigrp, struct ip *iph,
 128                                    struct eigrp_header *eigrph,
 129                                    struct stream *s, struct eigrp_interface *ei,
 130                                    int size);
 131
 132 extern struct TLV_MD5_Authentication_Type *eigrp_authTLV_MD5_new(void);
 133 extern void eigrp_authTLV_MD5_free(struct TLV_MD5_Authentication_Type *authTLV);
 134 extern struct TLV_SHA256_Authentication_Type *eigrp_authTLV_SHA256_new(void);
 135 extern void
 136 eigrp_authTLV_SHA256_free(struct TLV_SHA256_Authentication_Type *authTLV);
 137
 138 extern int eigrp_make_md5_digest(struct eigrp_interface *ei, struct stream *s,
 139                                  uint8_t flags);
 140 extern int eigrp_check_md5_digest(struct stream *s,
 141                                   struct TLV_MD5_Authentication_Type *authTLV,
 142                                   struct eigrp_neighbor *nbr, uint8_t flags);
 143 extern int eigrp_make_sha256_digest(struct eigrp_interface *ei,
 144                                     struct stream *s, uint8_t flags);
 145 extern int
 146 eigrp_check_sha256_digest(struct stream *s,
 147                           struct TLV_SHA256_Authentication_Type *authTLV,
 148                           struct eigrp_neighbor *nbr, uint8_t flags);
 149
 150
 151 extern void
 152 eigrp_IPv4_InternalTLV_free(struct TLV_IPv4_Internal_type *IPv4_InternalTLV);
 153
 154 extern struct TLV_Sequence_Type *eigrp_SequenceTLV_new(void);
 155
 156 extern const struct message eigrp_packet_type_str[];
 157 extern const size_t eigrp_packet_type_str_max;
 158
 159 #endif /* _ZEBRA_EIGRP_PACKET_H */