diff options
Diffstat (limited to 'ospf6d/ospf6_message.h')
| -rw-r--r-- | ospf6d/ospf6_message.h | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/ospf6d/ospf6_message.h b/ospf6d/ospf6_message.h new file mode 100644 index 00000000..105cb4f0 --- /dev/null +++ b/ospf6d/ospf6_message.h @@ -0,0 +1,202 @@ +/* + * Copyright (C) 1999 Yasuhiro Ohara + * + * This file is part of GNU Zebra. + * + * GNU Zebra is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * GNU Zebra is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Zebra; see the file COPYING. If not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef OSPF6_MESSAGE_H +#define OSPF6_MESSAGE_H + +#include "ospf6_prefix.h" +#include "ospf6_lsa.h" + +/* Type */ +#define OSPF6_MESSAGE_TYPE_NONE 0x0 +#define OSPF6_MESSAGE_TYPE_UNKNOWN 0x0 +#define OSPF6_MESSAGE_TYPE_HELLO 0x1 /* Discover/maintain neighbors */ +#define OSPF6_MESSAGE_TYPE_DBDESC 0x2 /* Summarize database contents */ +#define OSPF6_MESSAGE_TYPE_LSREQ 0x3 /* Database download */ +#define OSPF6_MESSAGE_TYPE_LSUPDATE 0x4 /* Database update */ +#define OSPF6_MESSAGE_TYPE_LSACK 0x5 /* Flooding acknowledgment */ +#define OSPF6_MESSAGE_TYPE_MAX 0x6 + +/* OSPFv3 packet header */ +struct ospf6_header +{ + u_char version; + u_char type; + u_int16_t len; + u_int32_t router_id; + u_int32_t area_id; + u_int16_t cksum; + u_char instance_id; + u_char reserved; +}; + +/* Hello */ +#define MAXLISTEDNBR 64 +struct ospf6_hello +{ + u_int32_t interface_id; + u_char rtr_pri; + u_char options[3]; + u_int16_t hello_interval; + u_int16_t router_dead_interval; + u_int32_t dr; + u_int32_t bdr; +}; + +/* Database Description */ +struct ospf6_dbdesc +{ + u_char mbz1; + u_char options[3]; + u_int16_t ifmtu; + u_char mbz2; + u_char bits; + u_int32_t seqnum; + /* Followed by LSAs */ +}; +#define DEFAULT_INTERFACE_MTU 1500 + +#define DD_IS_MSBIT_SET(x) ((x) & (1 << 0)) +#define DD_MSBIT_SET(x) ((x) |= (1 << 0)) +#define DD_MSBIT_CLEAR(x) ((x) &= ~(1 << 0)) +#define DD_IS_MBIT_SET(x) ((x) & (1 << 1)) +#define DD_MBIT_SET(x) ((x) |= (1 << 1)) +#define DD_MBIT_CLEAR(x) ((x) &= ~(1 << 1)) +#define DD_IS_IBIT_SET(x) ((x) & (1 << 2)) +#define DD_IBIT_SET(x) ((x) |= (1 << 2)) +#define DD_IBIT_CLEAR(x) ((x) &= ~(1 << 2)) + +#define DDBIT_IS_MASTER(x) ((x) & (1 << 0)) +#define DDBIT_IS_SLAVE(x) (!((x) & (1 << 0))) +#define DDBIT_SET_MASTER(x) ((x) |= (1 << 0)) +#define DDBIT_SET_SLAVE(x) ((x) |= ~(1 << 0)) +#define DDBIT_IS_MORE(x) ((x) & (1 << 1)) +#define DDBIT_SET_MORE(x) ((x) |= (1 << 1)) +#define DDBIT_CLR_MORE(x) ((x) |= ~(1 << 1)) +#define DDBIT_IS_INITIAL(x) ((x) & (1 << 2)) +#define DDBIT_SET_INITIAL(x) ((x) |= (1 << 2)) +#define DDBIT_CLR_INITIAL(x) ((x) |= ~(1 << 2)) + +#define OSPF6_DBDESC_BIT_MASTER 0x01 +#define OSPF6_DBDESC_BIT_MORE 0x02 +#define OSPF6_DBDESC_BIT_INITIAL 0x04 + +/* Link State Request */ +struct ospf6_lsreq +{ + u_int16_t mbz; /* Must Be Zero */ + u_int16_t type; /* LS type */ + u_int32_t id; /* Link State ID */ + u_int32_t adv_router; /* Advertising Router */ +}; + +/* Link State Update */ +struct ospf6_lsupdate +{ + u_int32_t lsupdate_num; +}; + +/* Link State Acknowledgement */ + /* no need for structure, + it will include only LSA header in the packet body.*/ + +/* definition for ospf6_message.c */ +#define OSPF6_MESSAGE_RECEIVE_BUFSIZE 5120 +#define OSPF6_MESSAGE_IOVEC_END 1024 + +#define IS_OVER_MTU(message,mtu,addsize) \ + (iov_totallen(message)+(addsize) >= \ + (mtu)-sizeof(struct ospf6_header)) + +#define OSPF6_MESSAGE_IOVEC_SIZE 1024 +#define OSPF6_MESSAGE_CLEAR(msg) \ +do { \ + int x; \ + for (x = 0; x < OSPF6_MESSAGE_IOVEC_SIZE; x++) \ + { \ + (msg)[x].iov_base = NULL; \ + (msg)[x].iov_len = 0; \ + } \ +} while (0) + +#define OSPF6_MESSAGE_ATTACH(msg,buf,bufsize) \ +do { \ + int x; \ + for (x = 0; x < OSPF6_MESSAGE_IOVEC_SIZE; x++) \ + if ((msg)[x].iov_base == (void *)NULL && (msg)[x].iov_len == 0) \ + break; \ + if (x < OSPF6_MESSAGE_IOVEC_SIZE - 1) \ + { \ + (msg)[x].iov_base = (void *)(buf); \ + (msg)[x].iov_len = (bufsize); \ + } \ +} while (0) + +#define OSPF6_MESSAGE_JOIN(msg,join) \ +do { \ + int x,y; \ + for (x = 0; x < OSPF6_MESSAGE_IOVEC_SIZE; x++) \ + if ((msg)[x].iov_base == NULL && (msg)[x].iov_len == 0) \ + break; \ + for (y = x; y < OSPF6_MESSAGE_IOVEC_SIZE; y++) \ + { \ + (msg)[y].iov_base = (join)[y - x].iov_base; \ + (msg)[y].iov_len = (join)[y - x].iov_len; \ + } \ +} while (0) + + +/* Statistics */ +struct ospf6_message_stat +{ + u_int32_t send; + u_int32_t send_octet; + u_int32_t recv; + u_int32_t recv_octet; +}; + +/* Type string */ +extern char *ospf6_message_type_string[]; + +/* Function Prototypes */ +int ospf6_receive (struct thread *); + +int ospf6_send_hello (struct thread *); +int ospf6_send_dbdesc_rxmt (struct thread *); +int ospf6_send_dbdesc (struct thread *); +int ospf6_send_lsreq (struct thread *); + +struct ospf6_neighbor; +struct ospf6_interface; +int +ospf6_send_lsupdate_rxmt (struct thread *); +void +ospf6_send_lsupdate_direct (struct ospf6_lsa *, struct ospf6_neighbor *); +void +ospf6_send_lsupdate_flood (struct ospf6_lsa *, struct ospf6_interface *); + +int ospf6_send_lsack_delayed (struct thread *); +int ospf6_send_lsack_direct (struct thread *); + +void ospf6_message_send (u_char, struct iovec *, struct in6_addr *, u_int); + +#endif /* OSPF6_MESSAGE_H */ + |