f9fc827448
- Delete redundant declarations. - Add -Wredundant-declarations to Makefile.i386 so they don't come back. - Delete sloppy COMMON-style declarations of uninitialized data in header files. - Add a few prototypes. - Clean up warnings resulting from the above. NB: ioconf.c will still generate a redundant-declaration warning, which is unavoidable unless somebody volunteers to make `config' smarter.
367 lines
14 KiB
C
367 lines
14 KiB
C
/*
|
|
* Copyright (c) 1982, 1986, 1989, 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.
|
|
*
|
|
* @(#)if.h 8.1 (Berkeley) 6/10/93
|
|
* $Id: if.h,v 1.4 1994/08/08 10:49:19 davidg Exp $
|
|
*/
|
|
|
|
/*
|
|
* Structures defining a network interface, providing a packet
|
|
* transport mechanism (ala level 0 of the PUP protocols).
|
|
*
|
|
* Each interface accepts output datagrams of a specified maximum
|
|
* length, and provides higher level routines with input datagrams
|
|
* received from its medium.
|
|
*
|
|
* Output occurs when the routine if_output is called, with three parameters:
|
|
* (*ifp->if_output)(ifp, m, dst, rt)
|
|
* Here m is the mbuf chain to be sent and dst is the destination address.
|
|
* The output routine encapsulates the supplied datagram if necessary,
|
|
* and then transmits it on its medium.
|
|
*
|
|
* On input, each interface unwraps the data received by it, and either
|
|
* places it on the input queue of a internetwork datagram routine
|
|
* and posts the associated software interrupt, or passes the datagram to a raw
|
|
* packet input routine.
|
|
*
|
|
* Routines exist for locating interfaces by their addresses
|
|
* or for locating a interface on a certain network, as well as more general
|
|
* routing and gateway routines maintaining information used to locate
|
|
* interfaces. These routines live in the files if.c and route.c
|
|
*/
|
|
#ifndef _TIME_ /* XXX fast fix for SNMP, going away soon */
|
|
#include <sys/time.h>
|
|
#endif
|
|
|
|
#ifdef __STDC__
|
|
/*
|
|
* Forward structure declarations for function prototypes [sic].
|
|
*/
|
|
struct mbuf;
|
|
struct proc;
|
|
struct rtentry;
|
|
struct socket;
|
|
struct ether_header;
|
|
#endif
|
|
/*
|
|
* Structure describing information about an interface
|
|
* which may be of interest to management entities.
|
|
*/
|
|
/*
|
|
* Structure defining a queue for a network interface.
|
|
*
|
|
* (Would like to call this struct ``if'', but C isn't PL/1.)
|
|
*/
|
|
|
|
struct ifnet {
|
|
char *if_name; /* name, e.g. ``en'' or ``lo'' */
|
|
struct ifnet *if_next; /* all struct ifnets are chained */
|
|
struct ifaddr *if_addrlist; /* linked list of addresses per if */
|
|
int if_pcount; /* number of promiscuous listeners */
|
|
caddr_t if_bpf; /* packet filter structure */
|
|
u_short if_index; /* numeric abbreviation for this if */
|
|
short if_unit; /* sub-unit for lower level driver */
|
|
short if_timer; /* time 'til if_watchdog called */
|
|
short if_flags; /* up/down, broadcast, etc. */
|
|
struct if_data {
|
|
/* generic interface information */
|
|
u_char ifi_type; /* ethernet, tokenring, etc */
|
|
u_char ifi_addrlen; /* media address length */
|
|
u_char ifi_hdrlen; /* media header length */
|
|
u_long ifi_mtu; /* maximum transmission unit */
|
|
u_long ifi_metric; /* routing metric (external only) */
|
|
u_long ifi_baudrate; /* linespeed */
|
|
/* volatile statistics */
|
|
u_long ifi_ipackets; /* packets received on interface */
|
|
u_long ifi_ierrors; /* input errors on interface */
|
|
u_long ifi_opackets; /* packets sent on interface */
|
|
u_long ifi_oerrors; /* output errors on interface */
|
|
u_long ifi_collisions; /* collisions on csma interfaces */
|
|
u_long ifi_ibytes; /* total number of octets received */
|
|
u_long ifi_obytes; /* total number of octets sent */
|
|
u_long ifi_imcasts; /* packets received via multicast */
|
|
u_long ifi_omcasts; /* packets sent via multicast */
|
|
u_long ifi_iqdrops; /* dropped on input, this interface */
|
|
u_long ifi_noproto; /* destined for unsupported protocol */
|
|
struct timeval ifi_lastchange;/* last updated */
|
|
} if_data;
|
|
/* procedure handles */
|
|
void (*if_init) /* init routine */
|
|
__P((int));
|
|
int (*if_output) /* output routine (enqueue) */
|
|
__P((struct ifnet *, struct mbuf *, struct sockaddr *,
|
|
struct rtentry *));
|
|
void (*if_start) /* initiate output routine */
|
|
__P((struct ifnet *));
|
|
int (*if_done) /* output complete routine */
|
|
__P((struct ifnet *)); /* (XXX not used; fake prototype) */
|
|
int (*if_ioctl) /* ioctl routine */
|
|
__P((struct ifnet *, int, caddr_t));
|
|
void (*if_reset)
|
|
__P((int)); /* new autoconfig will permit removal */
|
|
void (*if_watchdog) /* timer routine */
|
|
__P((int));
|
|
struct ifqueue {
|
|
struct mbuf *ifq_head;
|
|
struct mbuf *ifq_tail;
|
|
int ifq_len;
|
|
int ifq_maxlen;
|
|
int ifq_drops;
|
|
} if_snd; /* output queue */
|
|
};
|
|
#define if_mtu if_data.ifi_mtu
|
|
#define if_type if_data.ifi_type
|
|
#define if_addrlen if_data.ifi_addrlen
|
|
#define if_hdrlen if_data.ifi_hdrlen
|
|
#define if_metric if_data.ifi_metric
|
|
#define if_baudrate if_data.ifi_baudrate
|
|
#define if_ipackets if_data.ifi_ipackets
|
|
#define if_ierrors if_data.ifi_ierrors
|
|
#define if_opackets if_data.ifi_opackets
|
|
#define if_oerrors if_data.ifi_oerrors
|
|
#define if_collisions if_data.ifi_collisions
|
|
#define if_ibytes if_data.ifi_ibytes
|
|
#define if_obytes if_data.ifi_obytes
|
|
#define if_imcasts if_data.ifi_imcasts
|
|
#define if_omcasts if_data.ifi_omcasts
|
|
#define if_iqdrops if_data.ifi_iqdrops
|
|
#define if_noproto if_data.ifi_noproto
|
|
#define if_lastchange if_data.ifi_lastchange
|
|
|
|
#define IFF_UP 0x1 /* interface is up */
|
|
#define IFF_BROADCAST 0x2 /* broadcast address valid */
|
|
#define IFF_DEBUG 0x4 /* turn on debugging */
|
|
#define IFF_LOOPBACK 0x8 /* is a loopback net */
|
|
#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
|
|
#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
|
|
#define IFF_RUNNING 0x40 /* resources allocated */
|
|
#define IFF_NOARP 0x80 /* no address resolution protocol */
|
|
#define IFF_PROMISC 0x100 /* receive all packets */
|
|
#define IFF_ALLMULTI 0x200 /* receive all multicast packets */
|
|
#define IFF_OACTIVE 0x400 /* transmission in progress */
|
|
#define IFF_SIMPLEX 0x800 /* can't hear own transmissions */
|
|
#define IFF_LINK0 0x1000 /* per link layer defined bit */
|
|
#define IFF_LINK1 0x2000 /* per link layer defined bit */
|
|
#define IFF_LINK2 0x4000 /* per link layer defined bit */
|
|
#define IFF_MULTICAST 0x8000 /* supports multicast */
|
|
|
|
/* flags set internally only: */
|
|
#define IFF_CANTCHANGE \
|
|
(IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
|
|
IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI)
|
|
|
|
/*
|
|
* Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)
|
|
* input routines have queues of messages stored on ifqueue structures
|
|
* (defined above). Entries are added to and deleted from these structures
|
|
* by these macros, which should be called with ipl raised to splimp().
|
|
*/
|
|
#define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
|
|
#define IF_DROP(ifq) ((ifq)->ifq_drops++)
|
|
#define IF_ENQUEUE(ifq, m) { \
|
|
(m)->m_nextpkt = 0; \
|
|
if ((ifq)->ifq_tail == 0) \
|
|
(ifq)->ifq_head = m; \
|
|
else \
|
|
(ifq)->ifq_tail->m_nextpkt = m; \
|
|
(ifq)->ifq_tail = m; \
|
|
(ifq)->ifq_len++; \
|
|
}
|
|
#define IF_PREPEND(ifq, m) { \
|
|
(m)->m_nextpkt = (ifq)->ifq_head; \
|
|
if ((ifq)->ifq_tail == 0) \
|
|
(ifq)->ifq_tail = (m); \
|
|
(ifq)->ifq_head = (m); \
|
|
(ifq)->ifq_len++; \
|
|
}
|
|
#define IF_DEQUEUE(ifq, m) { \
|
|
(m) = (ifq)->ifq_head; \
|
|
if (m) { \
|
|
if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \
|
|
(ifq)->ifq_tail = 0; \
|
|
(m)->m_nextpkt = 0; \
|
|
(ifq)->ifq_len--; \
|
|
} \
|
|
}
|
|
|
|
#define IFQ_MAXLEN 50
|
|
#define IFNET_SLOWHZ 1 /* granularity is 1 second */
|
|
|
|
/*
|
|
* The ifaddr structure contains information about one address
|
|
* of an interface. They are maintained by the different address families,
|
|
* are allocated and attached when an address is set, and are linked
|
|
* together so all addresses for an interface can be located.
|
|
*/
|
|
struct ifaddr {
|
|
struct sockaddr *ifa_addr; /* address of interface */
|
|
struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
|
|
#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
|
|
struct sockaddr *ifa_netmask; /* used to determine subnet */
|
|
struct ifnet *ifa_ifp; /* back-pointer to interface */
|
|
struct ifaddr *ifa_next; /* next address for interface */
|
|
void (*ifa_rtrequest)(); /* check or clean routes (+ or -)'d */
|
|
u_short ifa_flags; /* mostly rt_flags for cloning */
|
|
short ifa_refcnt; /* extra to malloc for link info */
|
|
int ifa_metric; /* cost of going out this interface */
|
|
#ifdef notdef
|
|
struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */
|
|
#endif
|
|
};
|
|
#define IFA_ROUTE RTF_UP /* route installed */
|
|
|
|
/*
|
|
* Message format for use in obtaining information about interfaces
|
|
* from getkerninfo and the routing socket
|
|
*/
|
|
struct if_msghdr {
|
|
u_short ifm_msglen; /* to skip over non-understood messages */
|
|
u_char ifm_version; /* future binary compatability */
|
|
u_char ifm_type; /* message type */
|
|
int ifm_addrs; /* like rtm_addrs */
|
|
int ifm_flags; /* value of if_flags */
|
|
u_short ifm_index; /* index for associated ifp */
|
|
struct if_data ifm_data;/* statistics and other data about if */
|
|
};
|
|
|
|
/*
|
|
* Message format for use in obtaining information about interface addresses
|
|
* from getkerninfo and the routing socket
|
|
*/
|
|
struct ifa_msghdr {
|
|
u_short ifam_msglen; /* to skip over non-understood messages */
|
|
u_char ifam_version; /* future binary compatability */
|
|
u_char ifam_type; /* message type */
|
|
int ifam_addrs; /* like rtm_addrs */
|
|
int ifam_flags; /* value of ifa_flags */
|
|
u_short ifam_index; /* index for associated ifp */
|
|
int ifam_metric; /* value of ifa_metric */
|
|
};
|
|
|
|
/*
|
|
* Interface request structure used for socket
|
|
* ioctl's. All interface ioctl's must have parameter
|
|
* definitions which begin with ifr_name. The
|
|
* remainder may be interface specific.
|
|
*/
|
|
struct ifreq {
|
|
#define IFNAMSIZ 16
|
|
char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
|
|
union {
|
|
struct sockaddr ifru_addr;
|
|
struct sockaddr ifru_dstaddr;
|
|
struct sockaddr ifru_broadaddr;
|
|
short ifru_flags;
|
|
int ifru_metric;
|
|
int ifru_mtu;
|
|
caddr_t ifru_data;
|
|
} ifr_ifru;
|
|
#define ifr_addr ifr_ifru.ifru_addr /* address */
|
|
#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
|
|
#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
|
|
#define ifr_flags ifr_ifru.ifru_flags /* flags */
|
|
#define ifr_metric ifr_ifru.ifru_metric /* metric */
|
|
#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
|
|
#define ifr_data ifr_ifru.ifru_data /* for use by interface */
|
|
};
|
|
|
|
struct ifaliasreq {
|
|
char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
|
|
struct sockaddr ifra_addr;
|
|
struct sockaddr ifra_broadaddr;
|
|
struct sockaddr ifra_mask;
|
|
};
|
|
|
|
/*
|
|
* Structure used in SIOCGIFCONF request.
|
|
* Used to retrieve interface configuration
|
|
* for machine (useful for programs which
|
|
* must know all networks accessible).
|
|
*/
|
|
struct ifconf {
|
|
int ifc_len; /* size of associated buffer */
|
|
union {
|
|
caddr_t ifcu_buf;
|
|
struct ifreq *ifcu_req;
|
|
} ifc_ifcu;
|
|
#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
|
|
#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
|
|
};
|
|
|
|
#include <net/if_arp.h>
|
|
|
|
#ifdef KERNEL
|
|
#define IFAFREE(ifa) \
|
|
if ((ifa)->ifa_refcnt <= 0) \
|
|
ifafree(ifa); \
|
|
else \
|
|
(ifa)->ifa_refcnt--;
|
|
|
|
struct ifnet *ifnet;
|
|
|
|
void ether_ifattach __P((struct ifnet *));
|
|
void ether_input __P((struct ifnet *, struct ether_header *, struct mbuf *));
|
|
int ether_output __P((struct ifnet *,
|
|
struct mbuf *, struct sockaddr *, struct rtentry *));
|
|
char *ether_sprintf __P((u_char *));
|
|
|
|
void if_attach __P((struct ifnet *));
|
|
void if_down __P((struct ifnet *));
|
|
void if_qflush __P((struct ifqueue *));
|
|
void if_slowtimo __P((void *));
|
|
void if_up __P((struct ifnet *));
|
|
#ifdef vax
|
|
void ifubareset __P((int));
|
|
#endif
|
|
int ifconf __P((int, caddr_t));
|
|
/*void ifinit __P((void));*/ /* declared in systm.h for main() */
|
|
int ifioctl __P((struct socket *, int, caddr_t, struct proc *));
|
|
int ifpromisc __P((struct ifnet *, int));
|
|
struct ifnet *ifunit __P((char *));
|
|
|
|
struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *));
|
|
struct ifaddr *ifa_ifwithaf __P((int));
|
|
struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *));
|
|
struct ifaddr *ifa_ifwithnet __P((struct sockaddr *));
|
|
struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *,
|
|
struct sockaddr *));
|
|
struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *));
|
|
void ifafree __P((struct ifaddr *));
|
|
void link_rtrequest __P((int, struct rtentry *, struct sockaddr *));
|
|
|
|
int loioctl __P((struct ifnet *, int, caddr_t));
|
|
void loopattach __P((void));
|
|
int looutput __P((struct ifnet *,
|
|
struct mbuf *, struct sockaddr *, struct rtentry *));
|
|
void lortrequest __P((int, struct rtentry *, struct sockaddr *));
|
|
#endif
|