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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [include/] [net/] [bridge.h] - Rev 301
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/* * Copyright (c) 1998-2002 Luigi Rizzo * * Work partly supported by: Cisco Systems, Inc. - NSITE lab, RTP, NC * * 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. * * 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. * * $FreeBSD: src/sys/net/bridge.h,v 1.11 2002/02/15 05:11:11 luigi Exp $ */ extern int do_bridge; /* * We need additional per-interface info for the bridge, which is * stored in a struct bdg_softc. The ifp2sc[] array provides a pointer * to this struct using the if_index as a mapping key. * bdg_softc has a backpointer to the struct ifnet, the bridge * flags, and a cluster (bridging occurs only between port of the * same cluster). */ struct cluster_softc; /* opaque here, defined in bridge.c */ struct bdg_softc { struct ifnet *ifp ; /* also ((struct arpcom *)ifp)->ac_enaddr is the eth. addr */ int flags ; #define IFF_BDG_PROMISC 0x0001 /* set promisc mode on this if. */ #define IFF_MUTE 0x0002 /* mute this if for bridging. */ #define IFF_USED 0x0004 /* use this if for bridging. */ struct cluster_softc *cluster; } ; extern struct bdg_softc *ifp2sc; #define BDG_USED(ifp) (ifp2sc[ifp->if_index].flags & IFF_USED) /* * BDG_ACTIVE(ifp) does all checks to see if bridging is enabled, loaded, * and used on a given interface. */ #define BDG_ACTIVE(ifp) (do_bridge && BDG_LOADED && BDG_USED(ifp)) /* * The following constants are not legal ifnet pointers, and are used * as return values from the classifier, bridge_dst_lookup(). * The same values are used as index in the statistics arrays, * with BDG_FORWARD replacing specifically forwarded packets. * * These constants are here because they are used in 'netstat' * to show bridge statistics. */ #define BDG_BCAST ( (struct ifnet *)1 ) #define BDG_MCAST ( (struct ifnet *)2 ) #define BDG_LOCAL ( (struct ifnet *)3 ) #define BDG_DROP ( (struct ifnet *)4 ) #define BDG_UNKNOWN ( (struct ifnet *)5 ) #define BDG_IN ( (struct ifnet *)7 ) #define BDG_OUT ( (struct ifnet *)8 ) #define BDG_FORWARD ( (struct ifnet *)9 ) /* * Statistics are passed up with the sysctl interface, "netstat -p bdg" * reads them. PF_BDG defines the 'bridge' protocol family. */ #define PF_BDG 3 /* XXX superhack */ #define STAT_MAX (int)BDG_FORWARD struct bdg_port_stat { char name[16]; u_long collisions; u_long p_in[STAT_MAX+1]; } ; /* XXX this should be made dynamic */ #define BDG_MAX_PORTS 128 struct bdg_stats { struct bdg_port_stat s[BDG_MAX_PORTS]; } ; #define BDG_STAT(ifp, type) bdg_stats.s[ifp->if_index].p_in[(uintptr_t)type]++ #ifdef _KERNEL typedef struct ifnet *bridge_in_t(struct ifnet *, struct ether_header *); /* bdg_forward frees the mbuf if necessary, returning null */ typedef struct mbuf *bdg_forward_t(struct mbuf *, struct ether_header *const, struct ifnet *); typedef void bdgtakeifaces_t(void); extern bridge_in_t *bridge_in_ptr; extern bdg_forward_t *bdg_forward_ptr; extern bdgtakeifaces_t *bdgtakeifaces_ptr; #define BDG_LOADED (bdgtakeifaces_ptr != NULL) #endif /* KERNEL */
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