/*
|
/*
|
* Copyright (c) 1982, 1986, 1989, 1993
|
* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* The Regents of the University of California. All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
|
* Redistribution and use in source and binary forms, with or without
|
* modification, are permitted provided that the following conditions
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* modification, are permitted provided that the following conditions
|
* are met:
|
* are met:
|
* 1. Redistributions of source code must retain the above copyright
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* 1. Redistributions of source code must retain the above copyright
|
* notice, this list of conditions and the following disclaimer.
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* notice, this list of conditions and the following disclaimer.
|
* 2. Redistributions in binary form must reproduce the above copyright
|
* 2. Redistributions in binary form must reproduce the above copyright
|
* notice, this list of conditions and the following disclaimer in the
|
* notice, this list of conditions and the following disclaimer in the
|
* documentation and/or other materials provided with the distribution.
|
* documentation and/or other materials provided with the distribution.
|
* 3. All advertising materials mentioning features or use of this software
|
* 3. All advertising materials mentioning features or use of this software
|
* must display the following acknowledgement:
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* must display the following acknowledgement:
|
* This product includes software developed by the University of
|
* This product includes software developed by the University of
|
* California, Berkeley and its contributors.
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* 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
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* without specific prior written permission.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
* 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
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
* SUCH DAMAGE.
|
* SUCH DAMAGE.
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*
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*
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* From: @(#)if.h 8.1 (Berkeley) 6/10/93
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* From: @(#)if.h 8.1 (Berkeley) 6/10/93
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* $FreeBSD: src/sys/net/if_var.h,v 1.46 2002/05/07 18:11:55 imp Exp $
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* $FreeBSD: src/sys/net/if_var.h,v 1.46 2002/05/07 18:11:55 imp Exp $
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*/
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*/
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|
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#ifndef _NET_IF_VAR_H_
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#ifndef _NET_IF_VAR_H_
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#define _NET_IF_VAR_H_
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#define _NET_IF_VAR_H_
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|
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/*
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/*
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* Structures defining a network interface, providing a packet
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* Structures defining a network interface, providing a packet
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* transport mechanism (ala level 0 of the PUP protocols).
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* transport mechanism (ala level 0 of the PUP protocols).
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*
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*
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* Each interface accepts output datagrams of a specified maximum
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* Each interface accepts output datagrams of a specified maximum
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* length, and provides higher level routines with input datagrams
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* length, and provides higher level routines with input datagrams
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* received from its medium.
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* received from its medium.
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*
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*
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* Output occurs when the routine if_output is called, with three parameters:
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* Output occurs when the routine if_output is called, with three parameters:
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* (*ifp->if_output)(ifp, m, dst, rt)
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* (*ifp->if_output)(ifp, m, dst, rt)
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* Here m is the mbuf chain to be sent and dst is the destination address.
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* Here m is the mbuf chain to be sent and dst is the destination address.
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* The output routine encapsulates the supplied datagram if necessary,
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* The output routine encapsulates the supplied datagram if necessary,
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* and then transmits it on its medium.
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* and then transmits it on its medium.
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*
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*
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* On input, each interface unwraps the data received by it, and either
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* On input, each interface unwraps the data received by it, and either
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* places it on the input queue of a internetwork datagram routine
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* places it on the input queue of a internetwork datagram routine
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* and posts the associated software interrupt, or passes the datagram to a raw
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* and posts the associated software interrupt, or passes the datagram to a raw
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* packet input routine.
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* packet input routine.
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*
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*
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* Routines exist for locating interfaces by their addresses
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* Routines exist for locating interfaces by their addresses
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* or for locating a interface on a certain network, as well as more general
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* or for locating a interface on a certain network, as well as more general
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* routing and gateway routines maintaining information used to locate
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* routing and gateway routines maintaining information used to locate
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* interfaces. These routines live in the files if.c and route.c
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* interfaces. These routines live in the files if.c and route.c
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*/
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*/
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|
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#ifdef __STDC__
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#ifdef __STDC__
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/*
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/*
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* Forward structure declarations for function prototypes [sic].
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* Forward structure declarations for function prototypes [sic].
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*/
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*/
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struct mbuf;
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struct mbuf;
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struct thread;
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struct thread;
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struct rtentry;
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struct rtentry;
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struct rt_addrinfo;
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struct rt_addrinfo;
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struct socket;
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struct socket;
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struct ether_header;
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struct ether_header;
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#endif
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#endif
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|
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#include <sys/queue.h> /* get TAILQ macros */
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#include <sys/queue.h> /* get TAILQ macros */
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|
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#ifdef _KERNEL
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#ifdef _KERNEL
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#include <sys/mbuf.h>
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#include <sys/mbuf.h>
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#include <sys/systm.h> /* XXX */
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#include <sys/systm.h> /* XXX */
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#endif /* _KERNEL */
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#endif /* _KERNEL */
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#include <sys/lock.h> /* XXX */
|
#include <sys/lock.h> /* XXX */
|
#include <sys/mutex.h> /* XXX */
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#include <sys/mutex.h> /* XXX */
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#include <sys/event.h> /* XXX */
|
#include <sys/event.h> /* XXX */
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|
|
TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */
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TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */
|
TAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */
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TAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */
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TAILQ_HEAD(ifprefixhead, ifprefix);
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TAILQ_HEAD(ifprefixhead, ifprefix);
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TAILQ_HEAD(ifmultihead, ifmultiaddr);
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TAILQ_HEAD(ifmultihead, ifmultiaddr);
|
|
|
/*
|
/*
|
* Structure defining a queue for a network interface.
|
* Structure defining a queue for a network interface.
|
*/
|
*/
|
struct ifqueue {
|
struct ifqueue {
|
struct mbuf *ifq_head;
|
struct mbuf *ifq_head;
|
struct mbuf *ifq_tail;
|
struct mbuf *ifq_tail;
|
int ifq_len;
|
int ifq_len;
|
int ifq_maxlen;
|
int ifq_maxlen;
|
int ifq_drops;
|
int ifq_drops;
|
struct mtx ifq_mtx;
|
struct mtx ifq_mtx;
|
};
|
};
|
|
|
/*
|
/*
|
* Structure defining a network interface.
|
* Structure defining a network interface.
|
*
|
*
|
* (Would like to call this struct ``if'', but C isn't PL/1.)
|
* (Would like to call this struct ``if'', but C isn't PL/1.)
|
*/
|
*/
|
|
|
/*
|
/*
|
* NB: For FreeBSD, it is assumed that each NIC driver's softc starts with
|
* NB: For FreeBSD, it is assumed that each NIC driver's softc starts with
|
* one of these structures, typically held within an arpcom structure.
|
* one of these structures, typically held within an arpcom structure.
|
*
|
*
|
* struct <foo>_softc {
|
* struct <foo>_softc {
|
* struct arpcom {
|
* struct arpcom {
|
* struct ifnet ac_if;
|
* struct ifnet ac_if;
|
* ...
|
* ...
|
* } <arpcom> ;
|
* } <arpcom> ;
|
* ...
|
* ...
|
* };
|
* };
|
*
|
*
|
* The assumption is used in a number of places, including many
|
* The assumption is used in a number of places, including many
|
* files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach().
|
* files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach().
|
*
|
*
|
* Unfortunately devices' softc are opaque, so we depend on this layout
|
* Unfortunately devices' softc are opaque, so we depend on this layout
|
* to locate the struct ifnet from the softc in the generic code.
|
* to locate the struct ifnet from the softc in the generic code.
|
*
|
*
|
*/
|
*/
|
struct ifnet {
|
struct ifnet {
|
void *if_softc; /* pointer to driver state */
|
void *if_softc; /* pointer to driver state */
|
char *if_name; /* name, e.g. ``en'' or ``lo'' */
|
char *if_name; /* name, e.g. ``en'' or ``lo'' */
|
TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */
|
TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */
|
struct ifaddrhead if_addrhead; /* linked list of addresses per if */
|
struct ifaddrhead if_addrhead; /* linked list of addresses per if */
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struct klist if_klist; /* events attached to this if */
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struct klist if_klist; /* events attached to this if */
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int if_pcount; /* number of promiscuous listeners */
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int if_pcount; /* number of promiscuous listeners */
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struct bpf_if *if_bpf; /* packet filter structure */
|
struct bpf_if *if_bpf; /* packet filter structure */
|
u_short if_index; /* numeric abbreviation for this if */
|
u_short if_index; /* numeric abbreviation for this if */
|
short if_unit; /* sub-unit for lower level driver */
|
short if_unit; /* sub-unit for lower level driver */
|
short if_timer; /* time 'til if_watchdog called */
|
short if_timer; /* time 'til if_watchdog called */
|
short if_flags; /* up/down, broadcast, etc. */
|
short if_flags; /* up/down, broadcast, etc. */
|
int if_capabilities; /* interface capabilities */
|
int if_capabilities; /* interface capabilities */
|
int if_capenable; /* enabled features */
|
int if_capenable; /* enabled features */
|
int if_ipending; /* interrupts pending */
|
int if_ipending; /* interrupts pending */
|
void *if_linkmib; /* link-type-specific MIB data */
|
void *if_linkmib; /* link-type-specific MIB data */
|
size_t if_linkmiblen; /* length of above data */
|
size_t if_linkmiblen; /* length of above data */
|
struct if_data if_data;
|
struct if_data if_data;
|
struct ifmultihead if_multiaddrs; /* multicast addresses configured */
|
struct ifmultihead if_multiaddrs; /* multicast addresses configured */
|
int if_amcount; /* number of all-multicast requests */
|
int if_amcount; /* number of all-multicast requests */
|
/* procedure handles */
|
/* procedure handles */
|
int (*if_output) /* output routine (enqueue) */
|
int (*if_output) /* output routine (enqueue) */
|
(struct ifnet *, struct mbuf *, struct sockaddr *,
|
(struct ifnet *, struct mbuf *, struct sockaddr *,
|
struct rtentry *);
|
struct rtentry *);
|
void (*if_start) /* initiate output routine */
|
void (*if_start) /* initiate output routine */
|
(struct ifnet *);
|
(struct ifnet *);
|
int (*if_done) /* output complete routine */
|
int (*if_done) /* output complete routine */
|
(struct ifnet *); /* (XXX not used; fake prototype) */
|
(struct ifnet *); /* (XXX not used; fake prototype) */
|
int (*if_ioctl) /* ioctl routine */
|
int (*if_ioctl) /* ioctl routine */
|
(struct ifnet *, u_long, caddr_t);
|
(struct ifnet *, u_long, caddr_t);
|
void (*if_watchdog) /* timer routine */
|
void (*if_watchdog) /* timer routine */
|
(struct ifnet *);
|
(struct ifnet *);
|
int (*if_poll_recv) /* polled receive routine */
|
int (*if_poll_recv) /* polled receive routine */
|
(struct ifnet *, int *);
|
(struct ifnet *, int *);
|
int (*if_poll_xmit) /* polled transmit routine */
|
int (*if_poll_xmit) /* polled transmit routine */
|
(struct ifnet *, int *);
|
(struct ifnet *, int *);
|
void (*if_poll_intren) /* polled interrupt reenable routine */
|
void (*if_poll_intren) /* polled interrupt reenable routine */
|
(struct ifnet *);
|
(struct ifnet *);
|
void (*if_poll_slowinput) /* input routine for slow devices */
|
void (*if_poll_slowinput) /* input routine for slow devices */
|
(struct ifnet *, struct mbuf *);
|
(struct ifnet *, struct mbuf *);
|
void (*if_init) /* Init routine */
|
void (*if_init) /* Init routine */
|
(void *);
|
(void *);
|
int (*if_resolvemulti) /* validate/resolve multicast */
|
int (*if_resolvemulti) /* validate/resolve multicast */
|
(struct ifnet *, struct sockaddr **, struct sockaddr *);
|
(struct ifnet *, struct sockaddr **, struct sockaddr *);
|
struct ifqueue if_snd; /* output queue */
|
struct ifqueue if_snd; /* output queue */
|
struct ifqueue *if_poll_slowq; /* input queue for slow devices */
|
struct ifqueue *if_poll_slowq; /* input queue for slow devices */
|
struct ifprefixhead if_prefixhead; /* list of prefixes per if */
|
struct ifprefixhead if_prefixhead; /* list of prefixes per if */
|
u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */
|
u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */
|
};
|
};
|
|
|
typedef void if_init_f_t(void *);
|
typedef void if_init_f_t(void *);
|
|
|
#define if_mtu if_data.ifi_mtu
|
#define if_mtu if_data.ifi_mtu
|
#define if_type if_data.ifi_type
|
#define if_type if_data.ifi_type
|
#define if_physical if_data.ifi_physical
|
#define if_physical if_data.ifi_physical
|
#define if_addrlen if_data.ifi_addrlen
|
#define if_addrlen if_data.ifi_addrlen
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#define if_hdrlen if_data.ifi_hdrlen
|
#define if_hdrlen if_data.ifi_hdrlen
|
#define if_metric if_data.ifi_metric
|
#define if_metric if_data.ifi_metric
|
#define if_baudrate if_data.ifi_baudrate
|
#define if_baudrate if_data.ifi_baudrate
|
#define if_hwassist if_data.ifi_hwassist
|
#define if_hwassist if_data.ifi_hwassist
|
#define if_ipackets if_data.ifi_ipackets
|
#define if_ipackets if_data.ifi_ipackets
|
#define if_ierrors if_data.ifi_ierrors
|
#define if_ierrors if_data.ifi_ierrors
|
#define if_opackets if_data.ifi_opackets
|
#define if_opackets if_data.ifi_opackets
|
#define if_oerrors if_data.ifi_oerrors
|
#define if_oerrors if_data.ifi_oerrors
|
#define if_collisions if_data.ifi_collisions
|
#define if_collisions if_data.ifi_collisions
|
#define if_ibytes if_data.ifi_ibytes
|
#define if_ibytes if_data.ifi_ibytes
|
#define if_obytes if_data.ifi_obytes
|
#define if_obytes if_data.ifi_obytes
|
#define if_imcasts if_data.ifi_imcasts
|
#define if_imcasts if_data.ifi_imcasts
|
#define if_omcasts if_data.ifi_omcasts
|
#define if_omcasts if_data.ifi_omcasts
|
#define if_iqdrops if_data.ifi_iqdrops
|
#define if_iqdrops if_data.ifi_iqdrops
|
#define if_noproto if_data.ifi_noproto
|
#define if_noproto if_data.ifi_noproto
|
#define if_lastchange if_data.ifi_lastchange
|
#define if_lastchange if_data.ifi_lastchange
|
#define if_recvquota if_data.ifi_recvquota
|
#define if_recvquota if_data.ifi_recvquota
|
#define if_xmitquota if_data.ifi_xmitquota
|
#define if_xmitquota if_data.ifi_xmitquota
|
#define if_rawoutput(if, m, sa) if_output(if, m, sa, (struct rtentry *)0)
|
#define if_rawoutput(if, m, sa) if_output(if, m, sa, (struct rtentry *)0)
|
|
|
/* for compatibility with other BSDs */
|
/* for compatibility with other BSDs */
|
#define if_addrlist if_addrhead
|
#define if_addrlist if_addrhead
|
#define if_list if_link
|
#define if_list if_link
|
|
|
/*
|
/*
|
* Bit values in if_ipending
|
* Bit values in if_ipending
|
*/
|
*/
|
#define IFI_RECV 1 /* I want to receive */
|
#define IFI_RECV 1 /* I want to receive */
|
#define IFI_XMIT 2 /* I want to transmit */
|
#define IFI_XMIT 2 /* I want to transmit */
|
|
|
/*
|
/*
|
* Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq)
|
* Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq)
|
* are queues of messages stored on ifqueue structures
|
* are queues of messages stored on ifqueue structures
|
* (defined above). Entries are added to and deleted from these structures
|
* (defined above). Entries are added to and deleted from these structures
|
* by these macros, which should be called with ipl raised to splimp().
|
* by these macros, which should be called with ipl raised to splimp().
|
*/
|
*/
|
#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx)
|
#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx)
|
#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx)
|
#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx)
|
#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
|
#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
|
#define _IF_DROP(ifq) ((ifq)->ifq_drops++)
|
#define _IF_DROP(ifq) ((ifq)->ifq_drops++)
|
#define _IF_QLEN(ifq) ((ifq)->ifq_len)
|
#define _IF_QLEN(ifq) ((ifq)->ifq_len)
|
|
|
#define _IF_ENQUEUE(ifq, m) do { \
|
#define _IF_ENQUEUE(ifq, m) do { \
|
(m)->m_nextpkt = NULL; \
|
(m)->m_nextpkt = NULL; \
|
if ((ifq)->ifq_tail == NULL) \
|
if ((ifq)->ifq_tail == NULL) \
|
(ifq)->ifq_head = m; \
|
(ifq)->ifq_head = m; \
|
else \
|
else \
|
(ifq)->ifq_tail->m_nextpkt = m; \
|
(ifq)->ifq_tail->m_nextpkt = m; \
|
(ifq)->ifq_tail = m; \
|
(ifq)->ifq_tail = m; \
|
(ifq)->ifq_len++; \
|
(ifq)->ifq_len++; \
|
} while (0)
|
} while (0)
|
|
|
#define IF_ENQUEUE(ifq, m) do { \
|
#define IF_ENQUEUE(ifq, m) do { \
|
IF_LOCK(ifq); \
|
IF_LOCK(ifq); \
|
_IF_ENQUEUE(ifq, m); \
|
_IF_ENQUEUE(ifq, m); \
|
IF_UNLOCK(ifq); \
|
IF_UNLOCK(ifq); \
|
} while (0)
|
} while (0)
|
|
|
#define _IF_PREPEND(ifq, m) do { \
|
#define _IF_PREPEND(ifq, m) do { \
|
(m)->m_nextpkt = (ifq)->ifq_head; \
|
(m)->m_nextpkt = (ifq)->ifq_head; \
|
if ((ifq)->ifq_tail == NULL) \
|
if ((ifq)->ifq_tail == NULL) \
|
(ifq)->ifq_tail = (m); \
|
(ifq)->ifq_tail = (m); \
|
(ifq)->ifq_head = (m); \
|
(ifq)->ifq_head = (m); \
|
(ifq)->ifq_len++; \
|
(ifq)->ifq_len++; \
|
} while (0)
|
} while (0)
|
|
|
#define IF_PREPEND(ifq, m) do { \
|
#define IF_PREPEND(ifq, m) do { \
|
IF_LOCK(ifq); \
|
IF_LOCK(ifq); \
|
_IF_PREPEND(ifq, m); \
|
_IF_PREPEND(ifq, m); \
|
IF_UNLOCK(ifq); \
|
IF_UNLOCK(ifq); \
|
} while (0)
|
} while (0)
|
|
|
#define _IF_DEQUEUE(ifq, m) do { \
|
#define _IF_DEQUEUE(ifq, m) do { \
|
(m) = (ifq)->ifq_head; \
|
(m) = (ifq)->ifq_head; \
|
if (m) { \
|
if (m) { \
|
if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \
|
if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \
|
(ifq)->ifq_tail = NULL; \
|
(ifq)->ifq_tail = NULL; \
|
(m)->m_nextpkt = NULL; \
|
(m)->m_nextpkt = NULL; \
|
(ifq)->ifq_len--; \
|
(ifq)->ifq_len--; \
|
} \
|
} \
|
} while (0)
|
} while (0)
|
|
|
#define IF_DEQUEUE(ifq, m) do { \
|
#define IF_DEQUEUE(ifq, m) do { \
|
IF_LOCK(ifq); \
|
IF_LOCK(ifq); \
|
_IF_DEQUEUE(ifq, m); \
|
_IF_DEQUEUE(ifq, m); \
|
IF_UNLOCK(ifq); \
|
IF_UNLOCK(ifq); \
|
} while (0)
|
} while (0)
|
|
|
#define IF_DRAIN(ifq) do { \
|
#define IF_DRAIN(ifq) do { \
|
struct mbuf *m; \
|
struct mbuf *m; \
|
IF_LOCK(ifq); \
|
IF_LOCK(ifq); \
|
for (;;) { \
|
for (;;) { \
|
_IF_DEQUEUE(ifq, m); \
|
_IF_DEQUEUE(ifq, m); \
|
if (m == NULL) \
|
if (m == NULL) \
|
break; \
|
break; \
|
m_freem(m); \
|
m_freem(m); \
|
} \
|
} \
|
IF_UNLOCK(ifq); \
|
IF_UNLOCK(ifq); \
|
} while (0)
|
} while (0)
|
|
|
#ifdef _KERNEL
|
#ifdef _KERNEL
|
#define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0)
|
#define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0)
|
#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj)
|
#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj)
|
|
|
static __inline int
|
static __inline int
|
if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, int adjust)
|
if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, int adjust)
|
{
|
{
|
int active = 0;
|
int active = 0;
|
|
|
IF_LOCK(ifq);
|
IF_LOCK(ifq);
|
if (_IF_QFULL(ifq)) {
|
if (_IF_QFULL(ifq)) {
|
_IF_DROP(ifq);
|
_IF_DROP(ifq);
|
IF_UNLOCK(ifq);
|
IF_UNLOCK(ifq);
|
m_freem(m);
|
m_freem(m);
|
return (0);
|
return (0);
|
}
|
}
|
if (ifp != NULL) {
|
if (ifp != NULL) {
|
ifp->if_obytes += m->m_pkthdr.len + adjust;
|
ifp->if_obytes += m->m_pkthdr.len + adjust;
|
if (m->m_flags & M_MCAST)
|
if (m->m_flags & M_MCAST)
|
ifp->if_omcasts++;
|
ifp->if_omcasts++;
|
active = ifp->if_flags & IFF_OACTIVE;
|
active = ifp->if_flags & IFF_OACTIVE;
|
}
|
}
|
_IF_ENQUEUE(ifq, m);
|
_IF_ENQUEUE(ifq, m);
|
IF_UNLOCK(ifq);
|
IF_UNLOCK(ifq);
|
if (ifp != NULL && !active)
|
if (ifp != NULL && !active)
|
(*ifp->if_start)(ifp);
|
(*ifp->if_start)(ifp);
|
return (1);
|
return (1);
|
}
|
}
|
|
|
/*
|
/*
|
* 72 was chosen below because it is the size of a TCP/IP
|
* 72 was chosen below because it is the size of a TCP/IP
|
* header (40) + the minimum mss (32).
|
* header (40) + the minimum mss (32).
|
*/
|
*/
|
#define IF_MINMTU 72
|
#define IF_MINMTU 72
|
#define IF_MAXMTU 65535
|
#define IF_MAXMTU 65535
|
|
|
#endif /* _KERNEL */
|
#endif /* _KERNEL */
|
|
|
/*
|
/*
|
* The ifaddr structure contains information about one address
|
* The ifaddr structure contains information about one address
|
* of an interface. They are maintained by the different address families,
|
* of an interface. They are maintained by the different address families,
|
* are allocated and attached when an address is set, and are linked
|
* are allocated and attached when an address is set, and are linked
|
* together so all addresses for an interface can be located.
|
* together so all addresses for an interface can be located.
|
*/
|
*/
|
struct ifaddr {
|
struct ifaddr {
|
struct sockaddr *ifa_addr; /* address of interface */
|
struct sockaddr *ifa_addr; /* address of interface */
|
struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
|
struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */
|
#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
|
#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
|
struct sockaddr *ifa_netmask; /* used to determine subnet */
|
struct sockaddr *ifa_netmask; /* used to determine subnet */
|
struct if_data if_data; /* not all members are meaningful */
|
struct if_data if_data; /* not all members are meaningful */
|
struct ifnet *ifa_ifp; /* back-pointer to interface */
|
struct ifnet *ifa_ifp; /* back-pointer to interface */
|
TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */
|
TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */
|
void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
|
void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */
|
(int, struct rtentry *, struct rt_addrinfo *);
|
(int, struct rtentry *, struct rt_addrinfo *);
|
u_short ifa_flags; /* mostly rt_flags for cloning */
|
u_short ifa_flags; /* mostly rt_flags for cloning */
|
u_int ifa_refcnt; /* references to this structure */
|
u_int ifa_refcnt; /* references to this structure */
|
int ifa_metric; /* cost of going out this interface */
|
int ifa_metric; /* cost of going out this interface */
|
#ifdef notdef
|
#ifdef notdef
|
struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */
|
struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */
|
#endif
|
#endif
|
int (*ifa_claim_addr) /* check if an addr goes to this if */
|
int (*ifa_claim_addr) /* check if an addr goes to this if */
|
(struct ifaddr *, struct sockaddr *);
|
(struct ifaddr *, struct sockaddr *);
|
|
|
};
|
};
|
#define IFA_ROUTE RTF_UP /* route installed */
|
#define IFA_ROUTE RTF_UP /* route installed */
|
|
|
/* for compatibility with other BSDs */
|
/* for compatibility with other BSDs */
|
#define ifa_list ifa_link
|
#define ifa_list ifa_link
|
|
|
/*
|
/*
|
* The prefix structure contains information about one prefix
|
* The prefix structure contains information about one prefix
|
* of an interface. They are maintained by the different address families,
|
* of an interface. They are maintained by the different address families,
|
* are allocated and attached when an prefix or an address is set,
|
* are allocated and attached when an prefix or an address is set,
|
* and are linked together so all prefixes for an interface can be located.
|
* and are linked together so all prefixes for an interface can be located.
|
*/
|
*/
|
struct ifprefix {
|
struct ifprefix {
|
struct sockaddr *ifpr_prefix; /* prefix of interface */
|
struct sockaddr *ifpr_prefix; /* prefix of interface */
|
struct ifnet *ifpr_ifp; /* back-pointer to interface */
|
struct ifnet *ifpr_ifp; /* back-pointer to interface */
|
TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */
|
TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */
|
u_char ifpr_plen; /* prefix length in bits */
|
u_char ifpr_plen; /* prefix length in bits */
|
u_char ifpr_type; /* protocol dependent prefix type */
|
u_char ifpr_type; /* protocol dependent prefix type */
|
};
|
};
|
|
|
/*
|
/*
|
* Multicast address structure. This is analogous to the ifaddr
|
* Multicast address structure. This is analogous to the ifaddr
|
* structure except that it keeps track of multicast addresses.
|
* structure except that it keeps track of multicast addresses.
|
* Also, the reference count here is a count of requests for this
|
* Also, the reference count here is a count of requests for this
|
* address, not a count of pointers to this structure.
|
* address, not a count of pointers to this structure.
|
*/
|
*/
|
struct ifmultiaddr {
|
struct ifmultiaddr {
|
TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
|
TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */
|
struct sockaddr *ifma_addr; /* address this membership is for */
|
struct sockaddr *ifma_addr; /* address this membership is for */
|
struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
|
struct sockaddr *ifma_lladdr; /* link-layer translation, if any */
|
struct ifnet *ifma_ifp; /* back-pointer to interface */
|
struct ifnet *ifma_ifp; /* back-pointer to interface */
|
u_int ifma_refcount; /* reference count */
|
u_int ifma_refcount; /* reference count */
|
void *ifma_protospec; /* protocol-specific state, if any */
|
void *ifma_protospec; /* protocol-specific state, if any */
|
};
|
};
|
|
|
#ifdef _KERNEL
|
#ifdef _KERNEL
|
#define IFAFREE(ifa) \
|
#define IFAFREE(ifa) \
|
do { \
|
do { \
|
if ((ifa)->ifa_refcnt <= 0) \
|
if ((ifa)->ifa_refcnt <= 0) \
|
ifafree(ifa); \
|
ifafree(ifa); \
|
else \
|
else \
|
(ifa)->ifa_refcnt--; \
|
(ifa)->ifa_refcnt--; \
|
} while (0)
|
} while (0)
|
|
|
struct ifindex_entry {
|
struct ifindex_entry {
|
struct ifnet *ife_ifnet;
|
struct ifnet *ife_ifnet;
|
struct ifaddr *ife_ifnet_addr;
|
struct ifaddr *ife_ifnet_addr;
|
dev_t ife_dev;
|
dev_t ife_dev;
|
};
|
};
|
|
|
#define ifnet_byindex(idx) ifindex_table[(idx)].ife_ifnet
|
#define ifnet_byindex(idx) ifindex_table[(idx)].ife_ifnet
|
#define ifaddr_byindex(idx) ifindex_table[(idx)].ife_ifnet_addr
|
#define ifaddr_byindex(idx) ifindex_table[(idx)].ife_ifnet_addr
|
#define ifdev_byindex(idx) ifindex_table[(idx)].ife_dev
|
#define ifdev_byindex(idx) ifindex_table[(idx)].ife_dev
|
|
|
extern struct ifnethead ifnet;
|
extern struct ifnethead ifnet;
|
extern struct ifindex_entry *ifindex_table;
|
extern struct ifindex_entry *ifindex_table;
|
extern int ifqmaxlen;
|
extern int ifqmaxlen;
|
extern struct ifnet *loif; /* first loopback interface */
|
extern struct ifnet *loif; /* first loopback interface */
|
extern int if_index;
|
extern int if_index;
|
|
|
void ether_ifattach(struct ifnet *, int);
|
void ether_ifattach(struct ifnet *, int);
|
void ether_ifdetach(struct ifnet *, int);
|
void ether_ifdetach(struct ifnet *, int);
|
void ether_input(struct ifnet *, struct ether_header *, struct mbuf *);
|
void ether_input(struct ifnet *, struct ether_header *, struct mbuf *);
|
void ether_demux(struct ifnet *, struct ether_header *, struct mbuf *);
|
void ether_demux(struct ifnet *, struct ether_header *, struct mbuf *);
|
int ether_output(struct ifnet *,
|
int ether_output(struct ifnet *,
|
struct mbuf *, struct sockaddr *, struct rtentry *);
|
struct mbuf *, struct sockaddr *, struct rtentry *);
|
int ether_output_frame(struct ifnet *, struct mbuf *);
|
int ether_output_frame(struct ifnet *, struct mbuf *);
|
int ether_ioctl(struct ifnet *, int, caddr_t);
|
int ether_ioctl(struct ifnet *, int, caddr_t);
|
|
|
int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **);
|
int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **);
|
int if_allmulti(struct ifnet *, int);
|
int if_allmulti(struct ifnet *, int);
|
void if_attach(struct ifnet *);
|
void if_attach(struct ifnet *);
|
int if_delmulti(struct ifnet *, struct sockaddr *);
|
int if_delmulti(struct ifnet *, struct sockaddr *);
|
void if_detach(struct ifnet *);
|
void if_detach(struct ifnet *);
|
void if_down(struct ifnet *);
|
void if_down(struct ifnet *);
|
void if_route(struct ifnet *, int flag, int fam);
|
void if_route(struct ifnet *, int flag, int fam);
|
int if_setlladdr(struct ifnet *, const u_char *, int);
|
int if_setlladdr(struct ifnet *, const u_char *, int);
|
void if_unroute(struct ifnet *, int flag, int fam);
|
void if_unroute(struct ifnet *, int flag, int fam);
|
void if_up(struct ifnet *);
|
void if_up(struct ifnet *);
|
/*void ifinit(void);*/ /* declared in systm.h for main() */
|
/*void ifinit(void);*/ /* declared in systm.h for main() */
|
int ifioctl(struct socket *, u_long, caddr_t, struct thread *);
|
int ifioctl(struct socket *, u_long, caddr_t, struct thread *);
|
int ifpromisc(struct ifnet *, int);
|
int ifpromisc(struct ifnet *, int);
|
struct ifnet *ifunit(const char *);
|
struct ifnet *ifunit(const char *);
|
struct ifnet *if_withname(struct sockaddr *);
|
struct ifnet *if_withname(struct sockaddr *);
|
|
|
int if_poll_recv_slow(struct ifnet *ifp, int *quotap);
|
int if_poll_recv_slow(struct ifnet *ifp, int *quotap);
|
void if_poll_xmit_slow(struct ifnet *ifp, int *quotap);
|
void if_poll_xmit_slow(struct ifnet *ifp, int *quotap);
|
void if_poll_throttle(void);
|
void if_poll_throttle(void);
|
void if_poll_unthrottle(void *);
|
void if_poll_unthrottle(void *);
|
void if_poll_init(void);
|
void if_poll_init(void);
|
void if_poll(void);
|
void if_poll(void);
|
|
|
struct ifaddr *ifa_ifwithaddr(struct sockaddr *);
|
struct ifaddr *ifa_ifwithaddr(struct sockaddr *);
|
struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *);
|
struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *);
|
struct ifaddr *ifa_ifwithnet(struct sockaddr *);
|
struct ifaddr *ifa_ifwithnet(struct sockaddr *);
|
struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *);
|
struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *);
|
struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *);
|
struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *);
|
void ifafree(struct ifaddr *);
|
void ifafree(struct ifaddr *);
|
|
|
struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *);
|
struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *);
|
int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
|
int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
|
|
|
void if_clone_attach(struct if_clone *);
|
void if_clone_attach(struct if_clone *);
|
void if_clone_detach(struct if_clone *);
|
void if_clone_detach(struct if_clone *);
|
|
|
int if_clone_create(char *, int);
|
int if_clone_create(char *, int);
|
int if_clone_destroy(const char *);
|
int if_clone_destroy(const char *);
|
|
|
#define IF_LLADDR(ifp) \
|
#define IF_LLADDR(ifp) \
|
LLADDR((struct sockaddr_dl *) ifaddr_byindex((ifp)->if_index)->ifa_addr)
|
LLADDR((struct sockaddr_dl *) ifaddr_byindex((ifp)->if_index)->ifa_addr)
|
|
|
#ifdef DEVICE_POLLING
|
#ifdef DEVICE_POLLING
|
enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER };
|
enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER };
|
|
|
typedef void poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count);
|
typedef void poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count);
|
int ether_poll_register(poll_handler_t *h, struct ifnet *ifp);
|
int ether_poll_register(poll_handler_t *h, struct ifnet *ifp);
|
int ether_poll_deregister(struct ifnet *ifp);
|
int ether_poll_deregister(struct ifnet *ifp);
|
#endif /* DEVICE_POLLING */
|
#endif /* DEVICE_POLLING */
|
|
|
#endif /* _KERNEL */
|
#endif /* _KERNEL */
|
|
|
#endif /* !_NET_IF_VAR_H_ */
|
#endif /* !_NET_IF_VAR_H_ */
|
|
|
