527 lines
19 KiB
C
527 lines
19 KiB
C
/*
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* Copyright (c) 1998 by the University of Southern California.
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation in source and binary forms for lawful
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* purposes and without fee is hereby granted, provided
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* that the above copyright notice appear in all copies and that both
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* the copyright notice and this permission notice appear in supporting
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* documentation, and that any documentation, advertising materials,
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* and other materials related to such distribution and use acknowledge
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* that the software was developed by the University of Southern
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* California and/or Information Sciences Institute.
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* The name of the University of Southern California may not
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* be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THE UNIVERSITY OF SOUTHERN CALIFORNIA DOES NOT MAKE ANY REPRESENTATIONS
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* ABOUT THE SUITABILITY OF THIS SOFTWARE FOR ANY PURPOSE. THIS SOFTWARE IS
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* PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND
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* NON-INFRINGEMENT.
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*
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* IN NO EVENT SHALL USC, OR ANY OTHER CONTRIBUTOR BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT,
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* TORT, OR OTHER FORM OF ACTION, ARISING OUT OF OR IN CONNECTION WITH,
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* THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Other copyrights might apply to parts of this software and are so
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* noted when applicable.
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*/
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/* Questions concerning this software should be directed to
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* Mickael Hoerdt (hoerdt@clarinet.u-strasbg.fr) LSIIT Strasbourg.
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*
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*/
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/*
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* This program has been derived from pim6dd.
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* The pim6dd program is covered by the license in the accompanying file
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* named "LICENSE.pim6dd".
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*/
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/*
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* This program has been derived from pimd.
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* The pimd program is covered by the license in the accompanying file
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* named "LICENSE.pimd".
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*
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* $FreeBSD$
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*/
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#ifndef PIMD_H
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#define PIMD_H
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include "defs.h"
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#define PIM_PROTOCOL_VERSION 2
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/* PIM protocol timers (in seconds) */
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#define PIM_REGISTER_SUPPRESSION_TIMEOUT 60
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#define PIM_REGISTER_PROBE_TIME 5 /* Used to send NULL_REGISTER */
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#define PIM_DATA_TIMEOUT 210
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#define PIM_TIMER_HELLO_PERIOD 30
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#define PIM_JOIN_PRUNE_PERIOD 60
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#define PIM_JOIN_PRUNE_HOLDTIME (3.5 * PIM_JOIN_PRUNE_PERIOD)
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#define PIM_RANDOM_DELAY_JOIN_TIMEOUT 4.5
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#define PIM_DEFAULT_CAND_RP_ADV_PERIOD 60
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#define PIM_DEFAULT_BOOTSTRAP_PERIOD 60
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#define PIM_BOOTSTRAP_TIMEOUT (2.5 * PIM_DEFAULT_BOOTSTRAP_PERIOD + 10)
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#define PIM_TIMER_HELLO_HOLDTIME (3.5 * PIM_TIMER_HELLO_PERIOD)
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#define PIM_ASSERT_TIMEOUT 180
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/* Misc definitions */
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#define PIM_DEFAULT_CAND_RP_PRIORITY 0 /* 0 is the highest. Don't know
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* why this is the default.
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* See the PS version (Mar' 97),
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* pp.22 bottom of the spec.
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*/
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#define PIM_DEFAULT_BSR_PRIORITY 0 /* 0 is the lowest */
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#define RP_DEFAULT_IPV6_HASHMASKLEN 126 /* the default group msklen used
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* by the hash function to
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* calculate the group-to-RP
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* mapping
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*/
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#define SINGLE_SRC_MSK6LEN 128 /* the single source mask length */
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#define SINGLE_GRP_MSK6LEN 128 /* the single group mask length */
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/* TODO: change? */
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#define PIM_GROUP_PREFIX_DEFAULT_MASKLEN 8 /* The default group masklen if
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* omitted in the config file.
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*/
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/* Datarate related definitions */
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/* REG_RATE is used by the RP to switch to the shortest path instead of
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* decapsulating Registers.
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* DATA_RATE is the threshold for the last hop router to initiate
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* switching to the shortest path.
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*/
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/* TODO: XXX: probably no need for two different intervals.
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*/
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#define PIM_DEFAULT_REG_RATE 50000 /* max # of register bits/s */
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#define PIM_DEFAULT_REG_RATE_INTERVAL 20 /* regrate probe interval */
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#define PIM_DEFAULT_DATA_RATE 50000 /* max # of data bits/s */
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#define PIM_DEFAULT_DATA_RATE_INTERVAL 20 /* datarate check interval */
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#define DATA_RATE_CHECK_INTERVAL 20 /* Data rate check interval */
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#define REG_RATE_CHECK_INTERVAL 20 /* PIM Reg. rate check interval*/
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#define UCAST_ROUTING_CHECK_INTERVAL 20 /* Unfortunately, if the unicast
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* routing changes, the kernel
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* or any of the existing
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* unicast routing daemons
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* don't send us a signal.
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* Have to ask periodically the
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* kernel for any route changes.
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* Default: every 20 seconds.
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* Sigh.
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*/
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#define DEFAULT_PHY_RATE_LIMIT 0 /* default phyint rate limit */
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#define DEFAULT_REG_RATE_LIMIT 0 /* default register_vif rate limit */
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/**************************************************************************
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* PIM Encoded-Unicast, Encoded-Group and Encoded-Source Address formats *
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*************************************************************************/
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/* Address families definition */
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#define ADDRF_RESERVED 0
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#define ADDRF_IPv4 1
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#define ADDRF_IPv6 2
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#define ADDRF_NSAP 3
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#define ADDRF_HDLC 4
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#define ADDRF_BBN1822 5
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#define ADDRF_802 6
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#define ADDRF_ETHERNET ADDRF_802
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#define ADDRF_E163 7
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#define ADDRF_E164 8
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#define ADDRF_SMDS ADDRF_E164
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#define ADDRF_ATM ADDRF_E164
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#define ADDRF_F69 9
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#define ADDRF_TELEX ADDRF_F69
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#define ADDRF_X121 10
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#define ADDRF_X25 ADDRF_X121
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#define ADDRF_IPX 11
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#define ADDRF_APPLETALK 12
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#define ADDRF_DECNET_IV 13
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#define ADDRF_BANYAN 14
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#define ADDRF_E164_NSAP 15
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/* Addresses Encoding Type (specific for each Address Family */
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#define ADDRT_IPv6 0
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/* Encoded-Unicast: 18 bytes long */
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typedef struct pim6_encod_uni_addr_ {
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u_int8 addr_family;
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u_int8 encod_type;
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struct in6_addr unicast_addr; /* XXX: Note the 32-bit boundary
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* misalignment for the unicast
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* address when placed in the
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* memory. Must read it byte-by-byte!
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*/
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} pim6_encod_uni_addr_t;
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/* XXX: sizeof(pim6_encod_uni_addr_t) does not work due to misalignment */
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#define PIM6_ENCODE_UNI_ADDR_LEN 18
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/* Encoded-Group */
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typedef struct pim6_encod_grp_addr_ {
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u_int8 addr_family;
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u_int8 encod_type;
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u_int8 reserved;
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u_int8 masklen;
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struct in6_addr mcast_addr;
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} pim6_encod_grp_addr_t;
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/* XXX: sizeof(pim6_encod_grp_addr_t) MAY NOT work due to an alignment problem */
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#define PIM6_ENCODE_GRP_ADDR_LEN 20
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/* Encoded-Source */
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typedef struct pim6_encod_src_addr_ {
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u_int8 addr_family;
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u_int8 encod_type;
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u_int8 flags;
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u_int8 masklen;
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struct in6_addr src_addr;
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} pim6_encod_src_addr_t;
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/* XXX: sizeof(pim6_encod_src_addr_t) MAY NOT work due to an alignment problem */
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#define PIM6_ENCODE_SRC_ADDR_LEN 20
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#define USADDR_RP_BIT 0x1
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#define USADDR_WC_BIT 0x2
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#define USADDR_S_BIT 0x4
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/**************************************************************************
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* PIM Messages formats *
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*************************************************************************/
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/* PIM Hello */
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typedef struct pim_hello_ {
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u_int16 option_type; /* Option type */
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u_int16 option_length; /* Length of the Option Value field in bytes */
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} pim_hello_t;
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/* PIM Register */
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typedef struct pim_register_ {
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u_int32 reg_flags;
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} pim_register_t;
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/* PIM Register-Stop */
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typedef struct pim_register_stop_ {
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pim6_encod_grp_addr_t encod_grp;
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pim6_encod_uni_addr_t encod_src; /* XXX: 18 bytes long, misaligned */
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} pim_register_stop_t;
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/* PIM Join/Prune: XXX: all 128-bit addresses misaligned! */
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typedef struct pim_jp_header_ {
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pim6_encod_uni_addr_t encod_upstream_nbr;
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u_int8 reserved;
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u_int8 num_groups;
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u_int16 holdtime;
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} pim_jp_header_t;
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typedef struct pim_jp_encod_grp_ {
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pim6_encod_grp_addr_t encod_grp;
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u_int16 number_join_src;
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u_int16 number_prune_src;
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} pim_jp_encod_grp_t;
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#define PIM_ACTION_NOTHING 0
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#define PIM_ACTION_JOIN 1
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#define PIM_ACTION_PRUNE 2
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#define PIM_IIF_SOURCE 1
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#define PIM_IIF_RP 2
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#define PIM_ASSERT_RPT_BIT 0x80000000
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/* PIM messages type */
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#define PIM_HELLO 0
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#define PIM_REGISTER_STOP 2
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#define PIM_JOIN_PRUNE 3
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#define PIM_BOOTSTRAP 4
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#define PIM_ASSERT 5
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#define PIM_GRAFT 6
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#define PIM_GRAFT_ACK 7
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#define PIM_CAND_RP_ADV 8
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#define PIM_V2_HELLO PIM_HELLO
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#define PIM_V2_REGISTER PIM_REGISTER
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#define PIM_V2_REGISTER_STOP PIM_REGISTER_STOP
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#define PIM_V2_JOIN_PRUNE PIM_JOIN_PRUNE
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#define PIM_V2_BOOTSTRAP PIM_BOOTSTRAP
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#define PIM_V2_ASSERT PIM_ASSERT
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#define PIM_V2_GRAFT PIM_GRAFT
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#define PIM_V2_GRAFT_ACK PIM_GRAFT_ACK
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#define PIM_V2_CAND_RP_ADV PIM_CAND_RP_ADV
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/* Vartious options from PIM messages definitions */
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/* PIM_HELLO definitions */
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#define PIM_MESSAGE_HELLO_HOLDTIME 1
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#define PIM_MESSAGE_HELLO_HOLDTIME_LENGTH 2
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#define PIM_MESSAGE_HELLO_HOLDTIME_FOREVER 0xffff
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/* PIM_REGISTER definitions */
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#define PIM_MESSAGE_REGISTER_BORDER_BIT 0x80000000
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#define PIM_MESSAGE_REGISTER_NULL_REGISTER_BIT 0x40000000
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#define MASK_TO_MASKLEN6(mask , masklen) \
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do { \
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register u_int32 tmp_mask; \
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register u_int8 tmp_masklen = sizeof((mask)) <<3; \
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int i; \
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int kl; \
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for(i=0;i<4;i++) \
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{ \
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tmp_mask=ntohl(*(u_int32_t *)&mask.s6_addr[i * 4]); \
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for(kl=32; tmp_masklen >0 && kl>0 ; tmp_masklen--, kl-- , tmp_mask >>=1) \
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if( tmp_mask & 0x1) \
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break; \
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} \
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(masklen) =tmp_masklen; \
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} while (0)
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#define MASKLEN_TO_MASK6(masklen, mask6) \
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do {\
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u_char maskarray[8] = \
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{0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff}; \
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int bytelen, bitlen, i; \
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memset(&(mask6), 0, sizeof(mask6));\
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bytelen = (masklen) / 8;\
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bitlen = (masklen) % 8;\
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for (i = 0; i < bytelen; i++) \
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(mask6).s6_addr[i] = 0xff;\
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if (bitlen) \
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(mask6).s6_addr[bytelen] = maskarray[bitlen - 1]; \
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}while(0);
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/*
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* A bunch of macros because of the lack of 32-bit boundary alignment.
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* All because of one misalligned address format. Hopefully this will be
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* fixed in PIMv3. (cp) must be (u_int8 *) .
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*/
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/* Originates from Eddy Rusty's (eddy@isi.edu) PIM-SM implementation for
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* gated.
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*/
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/* PUT_NETLONG puts "network ordered" data to the datastream.
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* PUT_HOSTLONG puts "host ordered" data to the datastream.
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* GET_NETLONG gets the data and keeps it in "network order" in the memory
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* GET_HOSTLONG gets the data, but in the memory it is in "host order"
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* The same for all {PUT,GET}_{NET,HOST}{SHORT,LONG}
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*/
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#define GET_BYTE(val, cp) ((val) = *(cp)++)
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#define PUT_BYTE(val, cp) (*(cp)++ = (u_int8)(val))
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#define GET_HOSTSHORT(val, cp) \
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do { \
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register u_int16 Xv; \
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Xv = (*(cp)++) << 8; \
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Xv |= *(cp)++; \
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(val) = Xv; \
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} while (0)
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#define PUT_HOSTSHORT(val, cp) \
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do { \
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register u_int16 Xv; \
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Xv = (u_int16)(val); \
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*(cp)++ = (u_int8)(Xv >> 8); \
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*(cp)++ = (u_int8)Xv; \
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} while (0)
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#if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
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#define GET_NETSHORT(val, cp) \
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do { \
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register u_int16 Xv; \
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Xv = *(cp)++; \
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Xv |= (*(cp)++) << 8; \
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(val) = Xv; \
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} while (0)
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#define PUT_NETSHORT(val, cp) \
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do { \
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register u_int16 Xv; \
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Xv = (u_int16)(val); \
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*(cp)++ = (u_int8)Xv; \
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*(cp)++ = (u_int8)(Xv >> 8); \
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} while (0)
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#else
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#define GET_NETSHORT(val, cp) GET_HOSTSHORT(val, cp)
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#define PUT_NETSHORT(val, cp) PUT_HOSTSHORT(val, cp)
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#endif /* {GET,PUT}_NETSHORT */
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#define GET_HOSTLONG(val, cp) \
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do { \
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register u_long Xv; \
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Xv = (*(cp)++) << 24; \
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Xv |= (*(cp)++) << 16; \
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Xv |= (*(cp)++) << 8; \
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Xv |= *(cp)++; \
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(val) = Xv; \
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} while (0)
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#define PUT_HOSTLONG(val, cp) \
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do { \
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register u_int32 Xv; \
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Xv = (u_int32)(val); \
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*(cp)++ = (u_int8)(Xv >> 24); \
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*(cp)++ = (u_int8)(Xv >> 16); \
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*(cp)++ = (u_int8)(Xv >> 8); \
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*(cp)++ = (u_int8)Xv; \
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} while (0)
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#if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
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#define GET_NETLONG(val, cp) \
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do { \
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register u_long Xv; \
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Xv = *(cp)++; \
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Xv |= (*(cp)++) << 8; \
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Xv |= (*(cp)++) << 16; \
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Xv |= (*(cp)++) << 24; \
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(val) = Xv; \
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} while (0)
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#define PUT_NETLONG(val, cp) \
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do { \
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register u_int32 Xv; \
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Xv = (u_int32)(val); \
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*(cp)++ = (u_int8)Xv; \
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*(cp)++ = (u_int8)(Xv >> 8); \
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*(cp)++ = (u_int8)(Xv >> 16); \
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*(cp)++ = (u_int8)(Xv >> 24); \
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} while (0)
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#else
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#define GET_NETLONG(val, cp) GET_HOSTLONG(val, cp)
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#define PUT_NETLONG(val, cp) PUT_HOSTLONG(val, cp)
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#endif /* {GET,PUT}_HOSTLONG */
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#define GET_ESADDR6(esa, cp) /* XXX: hard coding */ \
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do { \
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(esa)->addr_family = *(cp)++; \
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(esa)->encod_type = *(cp)++; \
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(esa)->flags = *(cp)++; \
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(esa)->masklen = *(cp)++; \
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memcpy(&(esa)->src_addr, (cp), sizeof(struct in6_addr)); \
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(cp) += sizeof(struct in6_addr); \
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} while(0)
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#define PUT_ESADDR6(addr, masklen, flags, cp) \
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do { \
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int i; \
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struct in6_addr maskaddr; \
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MASKLEN_TO_MASK6(masklen, maskaddr); \
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*(cp)++ = ADDRF_IPv6; /* family */ \
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*(cp)++ = ADDRT_IPv6; /* type */ \
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*(cp)++ = (flags); /* flags */ \
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*(cp)++ = (masklen); \
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for (i = 0; i < sizeof(struct in6_addr); i++, (cp)++) \
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*(cp) = maskaddr.s6_addr[i] & (addr).s6_addr[i]; \
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} while(0)
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#define GET_EGADDR6(ega, cp) /* XXX: hard coding */ \
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do { \
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(ega)->addr_family = *(cp)++; \
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(ega)->encod_type = *(cp)++; \
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(ega)->reserved = *(cp)++; \
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(ega)->masklen = *(cp)++; \
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memcpy(&(ega)->mcast_addr, (cp), sizeof(struct in6_addr)); \
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(cp) += sizeof(struct in6_addr); \
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} while(0)
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#define PUT_EGADDR6(addr, masklen, reserved, cp) \
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do { \
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int i; \
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struct in6_addr maskaddr; \
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MASKLEN_TO_MASK6(masklen, maskaddr); \
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*(cp)++ = ADDRF_IPv6; /* family */ \
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*(cp)++ = ADDRT_IPv6; /* type */ \
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*(cp)++ = (reserved); /* reserved; should be 0 */ \
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*(cp)++ = (masklen); \
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for (i = 0; i < sizeof(struct in6_addr); i++, (cp)++) \
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*(cp) = maskaddr.s6_addr[i] & (addr).s6_addr[i]; \
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} while(0)
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#define GET_EUADDR6(eua, cp) /* XXX hard conding */ \
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do { \
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(eua)->addr_family = *(cp)++; \
|
|
(eua)->encod_type = *(cp)++; \
|
|
memcpy(&(eua)->unicast_addr, (cp), sizeof(struct in6_addr)); \
|
|
(cp) += sizeof(struct in6_addr); \
|
|
} while(0)
|
|
|
|
#define PUT_EUADDR6(addr, cp) \
|
|
do { \
|
|
*(cp)++ = ADDRF_IPv6; /* family */ \
|
|
*(cp)++ = ADDRT_IPv6; /* type */ \
|
|
memcpy((cp), &(addr), sizeof(struct in6_addr)); \
|
|
(cp) += sizeof(struct in6_addr); \
|
|
} while(0)
|
|
|
|
/* Used if no relaible unicast routing information available */
|
|
#define UCAST_DEFAULT_SOURCE_METRIC 1024
|
|
#define UCAST_DEFAULT_SOURCE_PREFERENCE 1024
|
|
|
|
|
|
#define DEFAULT_LOCAL_PREF 101 /* assert pref par defaut */
|
|
#define DEFAULT_LOCAL_METRIC 1024 /* assert metrique par default */
|
|
|
|
|
|
/*
|
|
* TODO: recalculate the messages sizes, probably with regard to the MTU
|
|
* TODO: cleanup
|
|
*/
|
|
|
|
#define MAX_JP_MESSAGE_SIZE 8192
|
|
#define MAX_JP_MESSAGE_POOL_NUMBER 8
|
|
#define MAX_JOIN_LIST_SIZE 1500
|
|
#define MAX_PRUNE_LIST_SIZE 1500
|
|
|
|
#define STAR_STAR_RP_MSK6LEN 8 /* Masklen for
|
|
* ff00 ::
|
|
* to encode (*,*,RP)
|
|
*/
|
|
|
|
/* interface independent statistics */
|
|
struct pim6dstat {
|
|
/* incoming PIM6 packets on this interface */
|
|
u_quad_t in_pim6_register;
|
|
u_quad_t in_pim6_register_stop;
|
|
u_quad_t in_pim6_cand_rp;
|
|
u_quad_t in_pim6_graft; /* for dense mode only */
|
|
u_quad_t in_pim6_graft_ack; /* for dense mode only */
|
|
/* outgoing PIM6 packets on this interface */
|
|
u_quad_t out_pim6_register;
|
|
u_quad_t out_pim6_register_stop;
|
|
u_quad_t out_pim6_cand_rp;
|
|
/* SPT transition */
|
|
u_quad_t pim6_trans_spt_forward;
|
|
u_quad_t pim6_trans_spt_rp;
|
|
/* occurrences of timeouts */
|
|
u_quad_t pim6_bootstrap_timo;/* pim_bootstrap_timer */
|
|
u_quad_t pim6_rpgrp_timo; /* rp_grp_entry_ptr->holdtime */
|
|
u_quad_t pim6_rtentry_timo; /* routing entry */
|
|
/* kernel internals */
|
|
u_quad_t kern_add_cache;
|
|
u_quad_t kern_add_cache_fail;
|
|
u_quad_t kern_del_cache;
|
|
u_quad_t kern_del_cache_fail;
|
|
u_quad_t kern_sgcnt_fail;
|
|
};
|
|
|
|
extern struct pim6dstat pim6dstat;
|
|
#endif
|