236 lines
8.1 KiB
C
236 lines
8.1 KiB
C
/*
|
|
* 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
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _NETINET_IN_VAR_H_
|
|
#define _NETINET_IN_VAR_H_
|
|
|
|
#include <sys/queue.h>
|
|
|
|
/*
|
|
* Interface address, Internet version. One of these structures
|
|
* is allocated for each Internet address on an interface.
|
|
* 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 */
|
|
TAILQ_ENTRY(in_ifaddr) ia_link; /* tailq macro glue */
|
|
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 IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr))
|
|
|
|
#define IN_LNAOF(in, ifa) \
|
|
((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask))
|
|
|
|
|
|
#ifdef _KERNEL
|
|
extern TAILQ_HEAD(in_ifaddrhead, in_ifaddr) in_ifaddrhead;
|
|
extern struct ifqueue ipintrq; /* ip packet input queue */
|
|
extern struct in_addr zeroin_addr;
|
|
extern u_char inetctlerrmap[];
|
|
|
|
/*
|
|
* Macro for finding the interface (ifnet structure) corresponding to one
|
|
* of our IP addresses.
|
|
*/
|
|
#define INADDR_TO_IFP(addr, ifp) \
|
|
/* struct in_addr addr; */ \
|
|
/* struct ifnet *ifp; */ \
|
|
{ \
|
|
register struct in_ifaddr *ia; \
|
|
\
|
|
for (ia = TAILQ_FIRST(&in_ifaddrhead); \
|
|
ia != NULL && ((ia->ia_ifp->if_flags & IFF_POINTOPOINT)? \
|
|
IA_DSTSIN(ia):IA_SIN(ia))->sin_addr.s_addr != (addr).s_addr; \
|
|
ia = TAILQ_NEXT(ia, ia_link)) \
|
|
continue; \
|
|
if (ia == NULL) \
|
|
TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) \
|
|
if (ia->ia_ifp->if_flags & IFF_POINTOPOINT && \
|
|
IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) \
|
|
break; \
|
|
(ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \
|
|
}
|
|
|
|
/*
|
|
* Macro for finding the internet address structure (in_ifaddr) corresponding
|
|
* to a given interface (ifnet structure).
|
|
*/
|
|
#define IFP_TO_IA(ifp, ia) \
|
|
/* struct ifnet *ifp; */ \
|
|
/* struct in_ifaddr *ia; */ \
|
|
{ \
|
|
for ((ia) = TAILQ_FIRST(&in_ifaddrhead); \
|
|
(ia) != NULL && (ia)->ia_ifp != (ifp); \
|
|
(ia) = TAILQ_NEXT((ia), ia_link)) \
|
|
continue; \
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* 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.
|
|
* For every entry on the interface's if_multiaddrs list which represents
|
|
* an IP multicast group, there is one of these structures. They are also
|
|
* kept on a system-wide list to make it easier to keep our legacy IGMP code
|
|
* compatible with the rest of the world (see IN_FIRST_MULTI et al, below).
|
|
*/
|
|
struct in_multi {
|
|
LIST_ENTRY(in_multi) inm_link; /* queue macro glue */
|
|
struct in_addr inm_addr; /* IP multicast address, convenience */
|
|
struct ifnet *inm_ifp; /* back pointer to ifnet */
|
|
struct ifmultiaddr *inm_ifma; /* back pointer to ifmultiaddr */
|
|
u_int inm_timer; /* IGMP membership report timer */
|
|
u_int inm_state; /* state of the membership */
|
|
struct router_info *inm_rti; /* router info*/
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#ifdef SYSCTL_DECL
|
|
SYSCTL_DECL(_net_inet_ip);
|
|
SYSCTL_DECL(_net_inet_raw);
|
|
#endif
|
|
|
|
extern LIST_HEAD(in_multihead, in_multi) in_multihead;
|
|
|
|
/*
|
|
* Structure used by macros below to remember position when stepping through
|
|
* all of the in_multi records.
|
|
*/
|
|
struct in_multistep {
|
|
struct in_multi *i_inm;
|
|
};
|
|
|
|
/*
|
|
* 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" is set null.
|
|
*/
|
|
#define IN_LOOKUP_MULTI(addr, ifp, inm) \
|
|
/* struct in_addr addr; */ \
|
|
/* struct ifnet *ifp; */ \
|
|
/* struct in_multi *inm; */ \
|
|
do { \
|
|
register struct ifmultiaddr *ifma; \
|
|
\
|
|
LIST_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { \
|
|
if (ifma->ifma_addr->sa_family == AF_INET \
|
|
&& ((struct sockaddr_in *)ifma->ifma_addr)->sin_addr.s_addr == \
|
|
(addr).s_addr) \
|
|
break; \
|
|
} \
|
|
(inm) = ifma ? ifma->ifma_protospec : 0; \
|
|
} while(0)
|
|
|
|
/*
|
|
* Macro to step through all of the in_multi records, one at a time.
|
|
* The current position is remembered in "step", which the caller must
|
|
* provide. IN_FIRST_MULTI(), below, must be called to initialize "step"
|
|
* and get the first record. Both macros return a NULL "inm" when there
|
|
* are no remaining records.
|
|
*/
|
|
#define IN_NEXT_MULTI(step, inm) \
|
|
/* struct in_multistep step; */ \
|
|
/* struct in_multi *inm; */ \
|
|
do { \
|
|
if (((inm) = (step).i_inm) != NULL) \
|
|
(step).i_inm = LIST_NEXT((step).i_inm, inm_link); \
|
|
} while(0)
|
|
|
|
#define IN_FIRST_MULTI(step, inm) \
|
|
/* struct in_multistep step; */ \
|
|
/* struct in_multi *inm; */ \
|
|
do { \
|
|
(step).i_inm = LIST_FIRST(&in_multihead); \
|
|
IN_NEXT_MULTI((step), (inm)); \
|
|
} while(0)
|
|
|
|
struct route;
|
|
struct in_multi *in_addmulti __P((struct in_addr *, struct ifnet *));
|
|
void in_delmulti __P((struct in_multi *));
|
|
int in_control __P((struct socket *, u_long, caddr_t, struct ifnet *,
|
|
struct proc *));
|
|
void in_rtqdrain __P((void));
|
|
void ip_input __P((struct mbuf *));
|
|
int in_ifadown __P((struct ifaddr *ifa));
|
|
void in_ifscrub __P((struct ifnet *, struct in_ifaddr *));
|
|
int ipflow_fastforward __P((struct mbuf *));
|
|
void ipflow_create __P((const struct route *, struct mbuf *));
|
|
void ipflow_slowtimo __P((void));
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
/* INET6 stuff */
|
|
#include <netinet6/in6_var.h>
|
|
|
|
#endif /* _NETINET_IN_VAR_H_ */
|