mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-05 08:51:48 +00:00
115 lines
4.1 KiB
C
115 lines
4.1 KiB
C
|
/*
|
||
|
* 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 */
|