in_var.h
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上传日期:2008-05-12
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VxWorks
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C/C++
- /* in_var.h - internet interface variable header file */
- /* Copyright 1984 - 2001 Wind River Systems, Inc. */
- /*
- * Copyright (c) 1985, 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)in_var.h 8.2 (Berkeley) 1/9/95
- */
- /*
- modification history
- --------------------
- 01d,04dec01,rae cleanup
- 01c,10oct01,rae merge from truestack (IGMPv2, VIRTUAL)
- 01b,05oct97,vin changed in_ifaddr for fast multicasting.
- 01a,03mar96,vin created from BSD4.4lite2.
- */
- #ifndef __INCin_varh
- #define __INCin_varh
- #ifdef __cplusplus
- extern "C" {
- #endif
- #include "net/if.h"
- #include "netinet/in_pcb.h"
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 1 /* tell gcc960 not to optimize alignments */
- #endif /* CPU_FAMILY==I960 */
- /*
- * Interface address, Internet version. One of these structures
- * is allocated for each interface with an Internet address.
- * The ifaddr structure contains the protocol-independent part
- * of the structure and is assumed to be first.
- */
- struct in_ifaddr {
- struct ifaddr ia_ifa; /* protocol-independent info */
- #define ia_ifp ia_ifa.ifa_ifp
- #define ia_flags ia_ifa.ifa_flags
- /* ia_{,sub}net{,mask} in host order */
- u_long ia_net; /* network number of interface */
- u_long ia_netmask; /* mask of net part */
- u_long ia_subnet; /* subnet number, including net */
- u_long ia_subnetmask; /* mask of subnet part */
- struct in_addr ia_netbroadcast; /* to recognize net broadcasts */
- struct in_ifaddr *ia_next; /* next in list of internet addresses */
- struct sockaddr_in ia_addr; /* reserve space for interface name */
- struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
- #define ia_broadaddr ia_dstaddr
- struct sockaddr_in ia_sockmask; /* reserve space for general netmask */
- };
- struct in_aliasreq {
- char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
- struct sockaddr_in ifra_addr;
- struct sockaddr_in ifra_broadaddr;
- #define ifra_dstaddr ifra_broadaddr
- struct sockaddr_in ifra_mask;
- };
- /*
- * Given a pointer to an in_ifaddr (ifaddr),
- * return a pointer to the addr as a sockaddr_in.
- */
- #define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr))
- #define IN_LNAOF(in, ifa)
- ((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask))
- #ifndef VIRTUAL_STACK
- extern struct in_ifaddr *in_ifaddr;
- #endif /* VIRTUAL_STACK */
- extern struct ifqueue ipintrq; /* ip packet input queue */
- extern u_char inetctlerrmap[];
- extern void in_socktrim (struct sockaddr_in *);
- /*
- * Macro for finding the interface (ifnet structure) corresponding to one
- * of our IP addresses.
- */
- #ifdef VIRTUAL_STACK
- #define INADDR_TO_IFP(addr, ifp)
- /* struct in_addr addr; */
- /* struct ifnet *ifp; */
- {
- register struct in_ifaddr *ia;
- for (ia = _in_ifaddr;
- ia != NULL && IA_SIN(ia)->sin_addr.s_addr != (addr).s_addr;
- ia = ia->ia_next)
- continue;
- (ifp) = (ia == NULL) ? NULL : ia->ia_ifp;
- }
- #else
- #define INADDR_TO_IFP(addr, ifp)
- /* struct in_addr addr; */
- /* struct ifnet *ifp; */
- {
- register struct in_ifaddr *ia;
- for (ia = in_ifaddr;
- ia != NULL && IA_SIN(ia)->sin_addr.s_addr != (addr).s_addr;
- ia = ia->ia_next)
- continue;
- (ifp) = (ia == NULL) ? NULL : ia->ia_ifp;
- }
- #endif /* VIRTUAL_STACK */
- /*
- * Macro for finding the internet address structure (in_ifaddr) corresponding
- * to a given interface (ifnet structure).
- */
- #ifdef VIRTUAL_STACK
- #define IFP_TO_IA(ifp, ia)
- /* struct ifnet *ifp; */
- /* struct in_ifaddr *ia; */
- {
- for ((ia) = _in_ifaddr;
- (ia) != NULL && (ia)->ia_ifp != (ifp);
- (ia) = (ia)->ia_next)
- continue;
- }
- #else
- #define IFP_TO_IA(ifp, ia)
- /* struct ifnet *ifp; */
- /* struct in_ifaddr *ia; */
- {
- for ((ia) = in_ifaddr;
- (ia) != NULL && (ia)->ia_ifp != (ifp);
- (ia) = (ia)->ia_next)
- continue;
- }
- #endif /* VIRTUAL_STACK */
- LIST_HEAD(inMultiHead, in_multi);
- /*
- * This information should be part of the ifnet structure but we don't wish
- * to change that - as it might break a number of things
- */
- struct router_info {
- struct ifnet *rti_ifp;
- int rti_type; /* type of router which is querier on this interface */
- int rti_time; /* # of slow timeouts since last old query */
- struct router_info *rti_next;
- };
- /*
- * Internet multicast address structure. There is one of these for each IP
- * multicast group to which this host belongs on a given network interface.
- * They are kept in a linked list, rooted in the interface's in_ifaddr
- * structure. (now it is a "hash list")
- */
- struct in_multi {
- LIST_ENTRY(in_multi) inm_hash; /* hash list */
- struct in_addr inm_addr; /* IP multicast address */
- struct ifnet *inm_ifp; /* back pointer to ifnet */
- u_int inm_refcount; /* no. membership claims by sockets */
- u_int inm_timer; /* IGMP membership report timer */
- u_int inm_state; /* state of the membership */
- struct router_info *inm_rti; /* router info*/
- struct mBlk * pInPcbMblk; /* chain of pcbs */
- };
- struct mcastHashInfo
- {
- struct inMultiHead * hashBase;
- ULONG hashMask;
- };
- typedef struct in_multi IN_MULTI;
- typedef struct mcastHashInfo M_CAST_HASH_INFO;
- typedef struct inMultiHead IN_MULTI_HEAD;
- extern struct mcastHashInfo mCastHashInfo;
- /* necessary macros */
- #define MCAST_HASH(mCastAddr, ifp, mask)
- (((mCastAddr) ^ ((mCastAddr) >> 16) ^ (int)(ifp)) & (mask))
- /*
- * Macro for looking up the in_multi record for a given IP multicast address
- * on a given interface. If no matching record is found, "inm" returns NULL.
- */
- #define IN_LOOKUP_MULTI(addr, ifp, inm)
- {
- (inm) = mcastHashTblLookup ((addr).s_addr, (ifp));
- }
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 0 /* turn off alignment requirement */
- #endif /* CPU_FAMILY==I960 */
- extern int in_ifinit (struct ifnet *,
- struct in_ifaddr *, struct sockaddr_in *, int);
- extern struct mBlk * in_addmulti (struct in_addr *, struct ifnet *,
- struct inpcb *);
- extern int in_delmulti (struct mBlk *, struct inpcb *);
- extern void in_ifscrub (struct ifnet *, struct in_ifaddr *);
- extern int in_control (struct socket *, u_long, caddr_t, struct ifnet *);
- IMPORT STATUS mcastHashTblInsert (struct in_multi * pInMulti);
- IMPORT STATUS mcastHashTblDelete (struct in_multi * pInMulti);
- IMPORT IN_MULTI * mcastHashTblLookup (int mcastAddr, struct ifnet * pIf);
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCin_varh */