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NeXTSTEP 3.3 (Developer)…68k, x86, SPARC, PA-RISC]
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ip_mroute.h
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C/C++ Source or Header
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1995-02-14
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2KB
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80 lines
/*
* Definitions for the kernel part of DVMRP,
* a Distance-Vector Multicast Routing Protocol.
* (See RFC-1075.)
*
* Written by David Waitzman, BBN Labs, August 1988.
* Modified by Steve Deering, Stanford, February 1989.
*
* MROUTING 1.0
*/
/*
* DVMRP-specific setsockopt commands.
*/
#define DVMRP_INIT 100
#define DVMRP_DONE 101
#define DVMRP_ADD_VIF 102
#define DVMRP_DEL_VIF 103
#define DVMRP_ADD_LGRP 104
#define DVMRP_DEL_LGRP 105
#define DVMRP_ADD_MRT 106
#define DVMRP_DEL_MRT 107
/*
* Types and macros for handling bitmaps with one bit per virtual interface.
*/
#define MAXVIFS 32
typedef u_long vifbitmap_t;
typedef u_short vifi_t; /* type of a vif index */
#define VIFM_SET(n, m) ((m) |= (1 << (n)))
#define VIFM_CLR(n, m) ((m) &= ~(1 << (n)))
#define VIFM_ISSET(n, m) ((m) & (1 << (n)))
#define VIFM_CLRALL(m) ((m) = 0x00000000)
#define VIFM_COPY(mfrom, mto) ((mto) = (mfrom))
#define VIFM_SAME(m1, m2) ((m1) == (m2))
/*
* Agument structure for DVMRP_ADD_VIF.
* (DVMRP_DEL_VIF takes a single vifi_t argument.)
*/
struct vifctl {
vifi_t vifc_vifi; /* the index of the vif to be added */
u_char vifc_flags; /* VIFF_ flags defined below */
u_char vifc_threshold; /* min ttl required to forward on vif */
struct in_addr vifc_lcl_addr; /* local interface address */
struct in_addr vifc_rmt_addr; /* remote address (tunnels only) */
};
#define VIFF_TUNNEL 0x1 /* vif represents a tunnel end-point */
/*
* Argument structure for DVMRP_ADD_LGRP and DVMRP_DEL_LGRP.
*/
struct lgrplctl {
vifi_t lgc_vifi;
struct in_addr lgc_gaddr;
};
/*
* Argument structure for DVMRP_ADD_MRT.
* (DVMRP_DEL_MRT takes a single struct in_addr argument, containing origin.)
*/
struct mrtctl {
struct in_addr mrtc_origin; /* subnet origin of multicasts */
struct in_addr mrtc_originmask; /* subnet mask for origin */
vifi_t mrtc_parent; /* incoming vif */
vifbitmap_t mrtc_children; /* outgoing children vifs */
vifbitmap_t mrtc_leaves; /* subset of outgoing children vifs */
};