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if_bridge.c
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if_bridge.c
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/* $NetBSD: if_bridge.c,v 1.73.4.2 2014/05/22 11:41:09 yamt Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* 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 for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
/*
* Copyright (c) 1999, 2000 Jason L. Wright (jason@thought.net)
* 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 Jason L. Wright
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* OpenBSD: if_bridge.c,v 1.60 2001/06/15 03:38:33 itojun Exp
*/
/*
* Network interface bridge support.
*
* TODO:
*
* - Currently only supports Ethernet-like interfaces (Ethernet,
* 802.11, VLANs on Ethernet, etc.) Figure out a nice way
* to bridge other types of interfaces (FDDI-FDDI, and maybe
* consider heterogenous bridges).
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_bridge.c,v 1.73.4.2 2014/05/22 11:41:09 yamt Exp $");
#ifdef _KERNEL_OPT
#include "opt_bridge_ipf.h"
#include "opt_inet.h"
#endif /* _KERNEL_OPT */
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/socketvar.h> /* for softnet_lock */
#include <sys/sockio.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/pool.h>
#include <sys/kauth.h>
#include <sys/cpu.h>
#include <sys/cprng.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/if_llc.h>
#include <net/if_ether.h>
#include <net/if_bridgevar.h>
#if defined(BRIDGE_IPF)
/* Used for bridge_ip[6]_checkbasic */
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/ip_private.h> /* XXX */
#include <netinet/ip6.h>
#include <netinet6/in6_var.h>
#include <netinet6/ip6_var.h>
#include <netinet6/ip6_private.h> /* XXX */
#endif /* BRIDGE_IPF */
/*
* Size of the route hash table. Must be a power of two.
*/
#ifndef BRIDGE_RTHASH_SIZE
#define BRIDGE_RTHASH_SIZE 1024
#endif
#define BRIDGE_RTHASH_MASK (BRIDGE_RTHASH_SIZE - 1)
#include "carp.h"
#if NCARP > 0
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/ip_carp.h>
#endif
/*
* Maximum number of addresses to cache.
*/
#ifndef BRIDGE_RTABLE_MAX
#define BRIDGE_RTABLE_MAX 100
#endif
/*
* Spanning tree defaults.
*/
#define BSTP_DEFAULT_MAX_AGE (20 * 256)
#define BSTP_DEFAULT_HELLO_TIME (2 * 256)
#define BSTP_DEFAULT_FORWARD_DELAY (15 * 256)
#define BSTP_DEFAULT_HOLD_TIME (1 * 256)
#define BSTP_DEFAULT_BRIDGE_PRIORITY 0x8000
#define BSTP_DEFAULT_PORT_PRIORITY 0x80
#define BSTP_DEFAULT_PATH_COST 55
/*
* Timeout (in seconds) for entries learned dynamically.
*/
#ifndef BRIDGE_RTABLE_TIMEOUT
#define BRIDGE_RTABLE_TIMEOUT (20 * 60) /* same as ARP */
#endif
/*
* Number of seconds between walks of the route list.
*/
#ifndef BRIDGE_RTABLE_PRUNE_PERIOD
#define BRIDGE_RTABLE_PRUNE_PERIOD (5 * 60)
#endif
int bridge_rtable_prune_period = BRIDGE_RTABLE_PRUNE_PERIOD;
static struct pool bridge_rtnode_pool;
void bridgeattach(int);
static int bridge_clone_create(struct if_clone *, int);
static int bridge_clone_destroy(struct ifnet *);
static int bridge_ioctl(struct ifnet *, u_long, void *);
static int bridge_init(struct ifnet *);
static void bridge_stop(struct ifnet *, int);
static void bridge_start(struct ifnet *);
static void bridge_forward(void *);
static void bridge_timer(void *);
static void bridge_broadcast(struct bridge_softc *, struct ifnet *,
struct mbuf *);
static int bridge_rtupdate(struct bridge_softc *, const uint8_t *,
struct ifnet *, int, uint8_t);
static struct ifnet *bridge_rtlookup(struct bridge_softc *, const uint8_t *);
static void bridge_rttrim(struct bridge_softc *);
static void bridge_rtage(struct bridge_softc *);
static void bridge_rtflush(struct bridge_softc *, int);
static int bridge_rtdaddr(struct bridge_softc *, const uint8_t *);
static void bridge_rtdelete(struct bridge_softc *, struct ifnet *ifp);
static int bridge_rtable_init(struct bridge_softc *);
static void bridge_rtable_fini(struct bridge_softc *);
static struct bridge_rtnode *bridge_rtnode_lookup(struct bridge_softc *,
const uint8_t *);
static int bridge_rtnode_insert(struct bridge_softc *,
struct bridge_rtnode *);
static void bridge_rtnode_destroy(struct bridge_softc *,
struct bridge_rtnode *);
static struct bridge_iflist *bridge_lookup_member(struct bridge_softc *,
const char *name);
static struct bridge_iflist *bridge_lookup_member_if(struct bridge_softc *,
struct ifnet *ifp);
static void bridge_delete_member(struct bridge_softc *,
struct bridge_iflist *);
static int bridge_ioctl_add(struct bridge_softc *, void *);
static int bridge_ioctl_del(struct bridge_softc *, void *);
static int bridge_ioctl_gifflags(struct bridge_softc *, void *);
static int bridge_ioctl_sifflags(struct bridge_softc *, void *);
static int bridge_ioctl_scache(struct bridge_softc *, void *);
static int bridge_ioctl_gcache(struct bridge_softc *, void *);
static int bridge_ioctl_gifs(struct bridge_softc *, void *);
static int bridge_ioctl_rts(struct bridge_softc *, void *);
static int bridge_ioctl_saddr(struct bridge_softc *, void *);
static int bridge_ioctl_sto(struct bridge_softc *, void *);
static int bridge_ioctl_gto(struct bridge_softc *, void *);
static int bridge_ioctl_daddr(struct bridge_softc *, void *);
static int bridge_ioctl_flush(struct bridge_softc *, void *);
static int bridge_ioctl_gpri(struct bridge_softc *, void *);
static int bridge_ioctl_spri(struct bridge_softc *, void *);
static int bridge_ioctl_ght(struct bridge_softc *, void *);
static int bridge_ioctl_sht(struct bridge_softc *, void *);
static int bridge_ioctl_gfd(struct bridge_softc *, void *);
static int bridge_ioctl_sfd(struct bridge_softc *, void *);
static int bridge_ioctl_gma(struct bridge_softc *, void *);
static int bridge_ioctl_sma(struct bridge_softc *, void *);
static int bridge_ioctl_sifprio(struct bridge_softc *, void *);
static int bridge_ioctl_sifcost(struct bridge_softc *, void *);
#if defined(BRIDGE_IPF)
static int bridge_ioctl_gfilt(struct bridge_softc *, void *);
static int bridge_ioctl_sfilt(struct bridge_softc *, void *);
static int bridge_ipf(void *, struct mbuf **, struct ifnet *, int);
static int bridge_ip_checkbasic(struct mbuf **mp);
# ifdef INET6
static int bridge_ip6_checkbasic(struct mbuf **mp);
# endif /* INET6 */
#endif /* BRIDGE_IPF */
struct bridge_control {
int (*bc_func)(struct bridge_softc *, void *);
int bc_argsize;
int bc_flags;
};
#define BC_F_COPYIN 0x01 /* copy arguments in */
#define BC_F_COPYOUT 0x02 /* copy arguments out */
#define BC_F_SUSER 0x04 /* do super-user check */
static const struct bridge_control bridge_control_table[] = {
[BRDGADD] = {bridge_ioctl_add, sizeof(struct ifbreq), BC_F_COPYIN|BC_F_SUSER},
[BRDGDEL] = {bridge_ioctl_del, sizeof(struct ifbreq), BC_F_COPYIN|BC_F_SUSER},
[BRDGGIFFLGS] = {bridge_ioctl_gifflags, sizeof(struct ifbreq), BC_F_COPYIN|BC_F_COPYOUT},
[BRDGSIFFLGS] = {bridge_ioctl_sifflags, sizeof(struct ifbreq), BC_F_COPYIN|BC_F_SUSER},
[BRDGSCACHE] = {bridge_ioctl_scache, sizeof(struct ifbrparam), BC_F_COPYIN|BC_F_SUSER},
[BRDGGCACHE] = {bridge_ioctl_gcache, sizeof(struct ifbrparam), BC_F_COPYOUT},
[BRDGGIFS] = {bridge_ioctl_gifs, sizeof(struct ifbifconf), BC_F_COPYIN|BC_F_COPYOUT},
[BRDGRTS] = {bridge_ioctl_rts, sizeof(struct ifbaconf), BC_F_COPYIN|BC_F_COPYOUT},
[BRDGSADDR] = {bridge_ioctl_saddr, sizeof(struct ifbareq), BC_F_COPYIN|BC_F_SUSER},
[BRDGSTO] = {bridge_ioctl_sto, sizeof(struct ifbrparam), BC_F_COPYIN|BC_F_SUSER},
[BRDGGTO] = {bridge_ioctl_gto, sizeof(struct ifbrparam), BC_F_COPYOUT},
[BRDGDADDR] = {bridge_ioctl_daddr, sizeof(struct ifbareq), BC_F_COPYIN|BC_F_SUSER},
[BRDGFLUSH] = {bridge_ioctl_flush, sizeof(struct ifbreq), BC_F_COPYIN|BC_F_SUSER},
[BRDGGPRI] = {bridge_ioctl_gpri, sizeof(struct ifbrparam), BC_F_COPYOUT},
[BRDGSPRI] = {bridge_ioctl_spri, sizeof(struct ifbrparam), BC_F_COPYIN|BC_F_SUSER},
[BRDGGHT] = {bridge_ioctl_ght, sizeof(struct ifbrparam), BC_F_COPYOUT},
[BRDGSHT] = {bridge_ioctl_sht, sizeof(struct ifbrparam), BC_F_COPYIN|BC_F_SUSER},
[BRDGGFD] = {bridge_ioctl_gfd, sizeof(struct ifbrparam), BC_F_COPYOUT},
[BRDGSFD] = {bridge_ioctl_sfd, sizeof(struct ifbrparam), BC_F_COPYIN|BC_F_SUSER},
[BRDGGMA] = {bridge_ioctl_gma, sizeof(struct ifbrparam), BC_F_COPYOUT},
[BRDGSMA] = {bridge_ioctl_sma, sizeof(struct ifbrparam), BC_F_COPYIN|BC_F_SUSER},
[BRDGSIFPRIO] = {bridge_ioctl_sifprio, sizeof(struct ifbreq), BC_F_COPYIN|BC_F_SUSER},
[BRDGSIFCOST] = {bridge_ioctl_sifcost, sizeof(struct ifbreq), BC_F_COPYIN|BC_F_SUSER},
#if defined(BRIDGE_IPF)
[BRDGGFILT] = {bridge_ioctl_gfilt, sizeof(struct ifbrparam), BC_F_COPYOUT},
[BRDGSFILT] = {bridge_ioctl_sfilt, sizeof(struct ifbrparam), BC_F_COPYIN|BC_F_SUSER},
#endif /* BRIDGE_IPF */
};
static const int bridge_control_table_size = __arraycount(bridge_control_table);
static LIST_HEAD(, bridge_softc) bridge_list;
static struct if_clone bridge_cloner =
IF_CLONE_INITIALIZER("bridge", bridge_clone_create, bridge_clone_destroy);
/*
* bridgeattach:
*
* Pseudo-device attach routine.
*/
void
bridgeattach(int n)
{
pool_init(&bridge_rtnode_pool, sizeof(struct bridge_rtnode),
0, 0, 0, "brtpl", NULL, IPL_NET);
LIST_INIT(&bridge_list);
if_clone_attach(&bridge_cloner);
}
/*
* bridge_clone_create:
*
* Create a new bridge instance.
*/
static int
bridge_clone_create(struct if_clone *ifc, int unit)
{
struct bridge_softc *sc;
struct ifnet *ifp;
int s;
sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK|M_ZERO);
ifp = &sc->sc_if;
sc->sc_brtmax = BRIDGE_RTABLE_MAX;
sc->sc_brttimeout = BRIDGE_RTABLE_TIMEOUT;
sc->sc_bridge_max_age = BSTP_DEFAULT_MAX_AGE;
sc->sc_bridge_hello_time = BSTP_DEFAULT_HELLO_TIME;
sc->sc_bridge_forward_delay = BSTP_DEFAULT_FORWARD_DELAY;
sc->sc_bridge_priority = BSTP_DEFAULT_BRIDGE_PRIORITY;
sc->sc_hold_time = BSTP_DEFAULT_HOLD_TIME;
sc->sc_filter_flags = 0;
/* software interrupt to do the work */
sc->sc_softintr = softint_establish(SOFTINT_NET, bridge_forward, sc);
if (sc->sc_softintr == NULL) {
free(sc, M_DEVBUF);
return ENOMEM;
}
/* Initialize our routing table. */
bridge_rtable_init(sc);
callout_init(&sc->sc_brcallout, 0);
callout_init(&sc->sc_bstpcallout, 0);
LIST_INIT(&sc->sc_iflist);
if_initname(ifp, ifc->ifc_name, unit);
ifp->if_softc = sc;
ifp->if_mtu = ETHERMTU;
ifp->if_ioctl = bridge_ioctl;
ifp->if_output = bridge_output;
ifp->if_start = bridge_start;
ifp->if_stop = bridge_stop;
ifp->if_init = bridge_init;
ifp->if_type = IFT_BRIDGE;
ifp->if_addrlen = 0;
ifp->if_dlt = DLT_EN10MB;
ifp->if_hdrlen = ETHER_HDR_LEN;
IFQ_SET_READY(&ifp->if_snd);
if_attach(ifp);
if_alloc_sadl(ifp);
s = splnet();
LIST_INSERT_HEAD(&bridge_list, sc, sc_list);
splx(s);
return (0);
}
/*
* bridge_clone_destroy:
*
* Destroy a bridge instance.
*/
static int
bridge_clone_destroy(struct ifnet *ifp)
{
struct bridge_softc *sc = ifp->if_softc;
struct bridge_iflist *bif;
int s;
s = splnet();
bridge_stop(ifp, 1);
while ((bif = LIST_FIRST(&sc->sc_iflist)) != NULL)
bridge_delete_member(sc, bif);
LIST_REMOVE(sc, sc_list);
splx(s);
if_detach(ifp);
/* Tear down the routing table. */
bridge_rtable_fini(sc);
softint_disestablish(sc->sc_softintr);
free(sc, M_DEVBUF);
return (0);
}
/*
* bridge_ioctl:
*
* Handle a control request from the operator.
*/
static int
bridge_ioctl(struct ifnet *ifp, u_long cmd, void *data)
{
struct bridge_softc *sc = ifp->if_softc;
struct lwp *l = curlwp; /* XXX */
union {
struct ifbreq ifbreq;
struct ifbifconf ifbifconf;
struct ifbareq ifbareq;
struct ifbaconf ifbaconf;
struct ifbrparam ifbrparam;
} args;
struct ifdrv *ifd = (struct ifdrv *) data;
const struct bridge_control *bc = NULL; /* XXXGCC */
int s, error = 0;
/* Authorize command before calling splnet(). */
switch (cmd) {
case SIOCGDRVSPEC:
case SIOCSDRVSPEC:
if (ifd->ifd_cmd >= bridge_control_table_size) {
error = EINVAL;
return error;
}
bc = &bridge_control_table[ifd->ifd_cmd];
/* We only care about BC_F_SUSER at this point. */
if ((bc->bc_flags & BC_F_SUSER) == 0)
break;
error = kauth_authorize_network(l->l_cred,
KAUTH_NETWORK_INTERFACE_BRIDGE,
cmd == SIOCGDRVSPEC ?
KAUTH_REQ_NETWORK_INTERFACE_BRIDGE_GETPRIV :
KAUTH_REQ_NETWORK_INTERFACE_BRIDGE_SETPRIV,
ifd, NULL, NULL);
if (error)
return (error);
break;
}
s = splnet();
switch (cmd) {
case SIOCGDRVSPEC:
case SIOCSDRVSPEC:
KASSERT(bc != NULL);
if (cmd == SIOCGDRVSPEC &&
(bc->bc_flags & BC_F_COPYOUT) == 0) {
error = EINVAL;
break;
}
else if (cmd == SIOCSDRVSPEC &&
(bc->bc_flags & BC_F_COPYOUT) != 0) {
error = EINVAL;
break;
}
/* BC_F_SUSER is checked above, before splnet(). */
if (ifd->ifd_len != bc->bc_argsize ||
ifd->ifd_len > sizeof(args)) {
error = EINVAL;
break;
}
memset(&args, 0, sizeof(args));
if (bc->bc_flags & BC_F_COPYIN) {
error = copyin(ifd->ifd_data, &args, ifd->ifd_len);
if (error)
break;
}
error = (*bc->bc_func)(sc, &args);
if (error)
break;
if (bc->bc_flags & BC_F_COPYOUT)
error = copyout(&args, ifd->ifd_data, ifd->ifd_len);
break;
case SIOCSIFFLAGS:
if ((error = ifioctl_common(ifp, cmd, data)) != 0)
break;
switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) {
case IFF_RUNNING:
/*
* If interface is marked down and it is running,
* then stop and disable it.
*/
(*ifp->if_stop)(ifp, 1);
break;
case IFF_UP:
/*
* If interface is marked up and it is stopped, then
* start it.
*/
error = (*ifp->if_init)(ifp);
break;
default:
break;
}
break;
default:
error = ifioctl_common(ifp, cmd, data);
break;
}
splx(s);
return (error);
}
/*
* bridge_lookup_member:
*
* Lookup a bridge member interface. Must be called at splnet().
*/
static struct bridge_iflist *
bridge_lookup_member(struct bridge_softc *sc, const char *name)
{
struct bridge_iflist *bif;
struct ifnet *ifp;
LIST_FOREACH(bif, &sc->sc_iflist, bif_next) {
ifp = bif->bif_ifp;
if (strcmp(ifp->if_xname, name) == 0)
return (bif);
}
return (NULL);
}
/*
* bridge_lookup_member_if:
*
* Lookup a bridge member interface by ifnet*. Must be called at splnet().
*/
static struct bridge_iflist *
bridge_lookup_member_if(struct bridge_softc *sc, struct ifnet *member_ifp)
{
struct bridge_iflist *bif;
LIST_FOREACH(bif, &sc->sc_iflist, bif_next) {
if (bif->bif_ifp == member_ifp)
return (bif);
}
return (NULL);
}
/*
* bridge_delete_member:
*
* Delete the specified member interface.
*/
static void
bridge_delete_member(struct bridge_softc *sc, struct bridge_iflist *bif)
{
struct ifnet *ifs = bif->bif_ifp;
switch (ifs->if_type) {
case IFT_ETHER:
/*
* Take the interface out of promiscuous mode.
*/
(void) ifpromisc(ifs, 0);
break;
default:
#ifdef DIAGNOSTIC
panic("bridge_delete_member: impossible");
#endif
break;
}
ifs->if_bridge = NULL;
LIST_REMOVE(bif, bif_next);
bridge_rtdelete(sc, ifs);
free(bif, M_DEVBUF);
if (sc->sc_if.if_flags & IFF_RUNNING)
bstp_initialization(sc);
}
static int
bridge_ioctl_add(struct bridge_softc *sc, void *arg)
{
struct ifbreq *req = arg;
struct bridge_iflist *bif = NULL;
struct ifnet *ifs;
int error = 0;
ifs = ifunit(req->ifbr_ifsname);
if (ifs == NULL)
return (ENOENT);
if (sc->sc_if.if_mtu != ifs->if_mtu)
return (EINVAL);
if (ifs->if_bridge == sc)
return (EEXIST);
if (ifs->if_bridge != NULL)
return (EBUSY);
bif = malloc(sizeof(*bif), M_DEVBUF, M_NOWAIT);
if (bif == NULL)
return (ENOMEM);
switch (ifs->if_type) {
case IFT_ETHER:
/*
* Place the interface into promiscuous mode.
*/
error = ifpromisc(ifs, 1);
if (error)
goto out;
break;
default:
error = EINVAL;
goto out;
}
bif->bif_ifp = ifs;
bif->bif_flags = IFBIF_LEARNING | IFBIF_DISCOVER;
bif->bif_priority = BSTP_DEFAULT_PORT_PRIORITY;
bif->bif_path_cost = BSTP_DEFAULT_PATH_COST;
ifs->if_bridge = sc;
LIST_INSERT_HEAD(&sc->sc_iflist, bif, bif_next);
if (sc->sc_if.if_flags & IFF_RUNNING)
bstp_initialization(sc);
else
bstp_stop(sc);
out:
if (error) {
if (bif != NULL)
free(bif, M_DEVBUF);
}
return (error);
}
static int
bridge_ioctl_del(struct bridge_softc *sc, void *arg)
{
struct ifbreq *req = arg;
struct bridge_iflist *bif;
bif = bridge_lookup_member(sc, req->ifbr_ifsname);
if (bif == NULL)
return (ENOENT);
bridge_delete_member(sc, bif);
return (0);
}
static int
bridge_ioctl_gifflags(struct bridge_softc *sc, void *arg)
{
struct ifbreq *req = arg;
struct bridge_iflist *bif;
bif = bridge_lookup_member(sc, req->ifbr_ifsname);
if (bif == NULL)
return (ENOENT);
req->ifbr_ifsflags = bif->bif_flags;
req->ifbr_state = bif->bif_state;
req->ifbr_priority = bif->bif_priority;
req->ifbr_path_cost = bif->bif_path_cost;
req->ifbr_portno = bif->bif_ifp->if_index & 0xff;
return (0);
}
static int
bridge_ioctl_sifflags(struct bridge_softc *sc, void *arg)
{
struct ifbreq *req = arg;
struct bridge_iflist *bif;
bif = bridge_lookup_member(sc, req->ifbr_ifsname);
if (bif == NULL)
return (ENOENT);
if (req->ifbr_ifsflags & IFBIF_STP) {
switch (bif->bif_ifp->if_type) {
case IFT_ETHER:
/* These can do spanning tree. */
break;
default:
/* Nothing else can. */
return (EINVAL);
}
}
bif->bif_flags = req->ifbr_ifsflags;
if (sc->sc_if.if_flags & IFF_RUNNING)
bstp_initialization(sc);
return (0);
}
static int
bridge_ioctl_scache(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
sc->sc_brtmax = param->ifbrp_csize;
bridge_rttrim(sc);
return (0);
}
static int
bridge_ioctl_gcache(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
param->ifbrp_csize = sc->sc_brtmax;
return (0);
}
static int
bridge_ioctl_gifs(struct bridge_softc *sc, void *arg)
{
struct ifbifconf *bifc = arg;
struct bridge_iflist *bif;
struct ifbreq breq;
int count, len, error = 0;
count = 0;
LIST_FOREACH(bif, &sc->sc_iflist, bif_next)
count++;
if (bifc->ifbic_len == 0) {
bifc->ifbic_len = sizeof(breq) * count;
return (0);
}
count = 0;
len = bifc->ifbic_len;
memset(&breq, 0, sizeof breq);
LIST_FOREACH(bif, &sc->sc_iflist, bif_next) {
if (len < sizeof(breq))
break;
strlcpy(breq.ifbr_ifsname, bif->bif_ifp->if_xname,
sizeof(breq.ifbr_ifsname));
breq.ifbr_ifsflags = bif->bif_flags;
breq.ifbr_state = bif->bif_state;
breq.ifbr_priority = bif->bif_priority;
breq.ifbr_path_cost = bif->bif_path_cost;
breq.ifbr_portno = bif->bif_ifp->if_index & 0xff;
error = copyout(&breq, bifc->ifbic_req + count, sizeof(breq));
if (error)
break;
count++;
len -= sizeof(breq);
}
bifc->ifbic_len = sizeof(breq) * count;
return (error);
}
static int
bridge_ioctl_rts(struct bridge_softc *sc, void *arg)
{
struct ifbaconf *bac = arg;
struct bridge_rtnode *brt;
struct ifbareq bareq;
int count = 0, error = 0, len;
if (bac->ifbac_len == 0)
return (0);
len = bac->ifbac_len;
LIST_FOREACH(brt, &sc->sc_rtlist, brt_list) {
if (len < sizeof(bareq))
goto out;
memset(&bareq, 0, sizeof(bareq));
strlcpy(bareq.ifba_ifsname, brt->brt_ifp->if_xname,
sizeof(bareq.ifba_ifsname));
memcpy(bareq.ifba_dst, brt->brt_addr, sizeof(brt->brt_addr));
if ((brt->brt_flags & IFBAF_TYPEMASK) == IFBAF_DYNAMIC) {
bareq.ifba_expire = brt->brt_expire - time_uptime;
} else
bareq.ifba_expire = 0;
bareq.ifba_flags = brt->brt_flags;
error = copyout(&bareq, bac->ifbac_req + count, sizeof(bareq));
if (error)
goto out;
count++;
len -= sizeof(bareq);
}
out:
bac->ifbac_len = sizeof(bareq) * count;
return (error);
}
static int
bridge_ioctl_saddr(struct bridge_softc *sc, void *arg)
{
struct ifbareq *req = arg;
struct bridge_iflist *bif;
int error;
bif = bridge_lookup_member(sc, req->ifba_ifsname);
if (bif == NULL)
return (ENOENT);
error = bridge_rtupdate(sc, req->ifba_dst, bif->bif_ifp, 1,
req->ifba_flags);
return (error);
}
static int
bridge_ioctl_sto(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
sc->sc_brttimeout = param->ifbrp_ctime;
return (0);
}
static int
bridge_ioctl_gto(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
param->ifbrp_ctime = sc->sc_brttimeout;
return (0);
}
static int
bridge_ioctl_daddr(struct bridge_softc *sc, void *arg)
{
struct ifbareq *req = arg;
return (bridge_rtdaddr(sc, req->ifba_dst));
}
static int
bridge_ioctl_flush(struct bridge_softc *sc, void *arg)
{
struct ifbreq *req = arg;
bridge_rtflush(sc, req->ifbr_ifsflags);
return (0);
}
static int
bridge_ioctl_gpri(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
param->ifbrp_prio = sc->sc_bridge_priority;
return (0);
}
static int
bridge_ioctl_spri(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
sc->sc_bridge_priority = param->ifbrp_prio;
if (sc->sc_if.if_flags & IFF_RUNNING)
bstp_initialization(sc);
return (0);
}
static int
bridge_ioctl_ght(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
param->ifbrp_hellotime = sc->sc_bridge_hello_time >> 8;
return (0);
}
static int
bridge_ioctl_sht(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
if (param->ifbrp_hellotime == 0)
return (EINVAL);
sc->sc_bridge_hello_time = param->ifbrp_hellotime << 8;
if (sc->sc_if.if_flags & IFF_RUNNING)
bstp_initialization(sc);
return (0);
}
static int
bridge_ioctl_gfd(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
param->ifbrp_fwddelay = sc->sc_bridge_forward_delay >> 8;
return (0);
}
static int
bridge_ioctl_sfd(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
if (param->ifbrp_fwddelay == 0)
return (EINVAL);
sc->sc_bridge_forward_delay = param->ifbrp_fwddelay << 8;
if (sc->sc_if.if_flags & IFF_RUNNING)
bstp_initialization(sc);
return (0);
}
static int
bridge_ioctl_gma(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
param->ifbrp_maxage = sc->sc_bridge_max_age >> 8;
return (0);
}
static int
bridge_ioctl_sma(struct bridge_softc *sc, void *arg)
{
struct ifbrparam *param = arg;
if (param->ifbrp_maxage == 0)
return (EINVAL);
sc->sc_bridge_max_age = param->ifbrp_maxage << 8;
if (sc->sc_if.if_flags & IFF_RUNNING)
bstp_initialization(sc);
return (0);
}
static int