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Sourcecode: freebsd-utils version File versions

ifbridge.c

/*-
 * 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.
 */

#ifndef lint
static const char rcsid[] =
  "$FreeBSD: src/sbin/ifconfig/ifbridge.c,v 1.11.2.1.2.1 2008/11/25 02:59:29 kensmith Exp $";
#endif /* not lint */

#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/sockio.h>

#include <stdlib.h>
#include <unistd.h>

#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_bridgevar.h>
#include <net/route.h>

#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <err.h>
#include <errno.h>

#include "ifconfig.h"

#define PV2ID(pv, epri, eaddr)  do {            \
            epri     = pv >> 48;          \
            eaddr[0] = pv >> 40;          \
            eaddr[1] = pv >> 32;          \
            eaddr[2] = pv >> 24;          \
            eaddr[3] = pv >> 16;          \
            eaddr[4] = pv >> 8;           \
            eaddr[5] = pv >> 0;           \
} while (0)

static const char *stpstates[] = {
      "disabled",
      "listening",
      "learning",
      "forwarding",
      "blocking",
      "discarding"
};
static const char *stpproto[] = {
      "stp",
      "-",
      "rstp"
};
static const char *stproles[] = {
      "disabled",
      "root",
      "designated",
      "alternate",
      "backup"
};

static int
get_val(const char *cp, u_long *valp)
{
      char *endptr;
      u_long val;

      errno = 0;
      val = strtoul(cp, &endptr, 0);
      if (cp[0] == '\0' || endptr[0] != '\0' || errno == ERANGE)
            return (-1);

      *valp = val;
      return (0);
}

static int
do_cmd(int sock, u_long op, void *arg, size_t argsize, int set)
{
      struct ifdrv ifd;

      memset(&ifd, 0, sizeof(ifd));

      strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name));
      ifd.ifd_cmd = op;
      ifd.ifd_len = argsize;
      ifd.ifd_data = arg;

      return (ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd));
}

static void
do_bridgeflag(int sock, const char *ifs, int flag, int set)
{
      struct ifbreq req;

      strlcpy(req.ifbr_ifsname, ifs, sizeof(req.ifbr_ifsname));

      if (do_cmd(sock, BRDGGIFFLGS, &req, sizeof(req), 0) < 0)
            err(1, "unable to get bridge flags");

      if (set)
            req.ifbr_ifsflags |= flag;
      else
            req.ifbr_ifsflags &= ~flag;

      if (do_cmd(sock, BRDGSIFFLGS, &req, sizeof(req), 1) < 0)
            err(1, "unable to set bridge flags");
}

static void
bridge_interfaces(int s, const char *prefix)
{
      struct ifbifconf bifc;
      struct ifbreq *req;
      char *inbuf = NULL, *ninbuf;
      char *p, *pad;
      int i, len = 8192;

      pad = strdup(prefix);
      if (pad == NULL)
            err(1, "strdup");
      /* replace the prefix with whitespace */
      for (p = pad; *p != '\0'; p++) {
            if(isprint(*p))
                  *p = ' ';
      }

      for (;;) {
            ninbuf = realloc(inbuf, len);
            if (ninbuf == NULL)
                  err(1, "unable to allocate interface buffer");
            bifc.ifbic_len = len;
            bifc.ifbic_buf = inbuf = ninbuf;
            if (do_cmd(s, BRDGGIFS, &bifc, sizeof(bifc), 0) < 0)
                  err(1, "unable to get interface list");
            if ((bifc.ifbic_len + sizeof(*req)) < len)
                  break;
            len *= 2;
      }

      for (i = 0; i < bifc.ifbic_len / sizeof(*req); i++) {
            req = bifc.ifbic_req + i;
            printf("%s%s ", prefix, req->ifbr_ifsname);
            printb("flags", req->ifbr_ifsflags, IFBIFBITS);
            printf("\n");

            printf("%s", pad);
            printf("ifmaxaddr %u", req->ifbr_addrmax);
            printf(" port %u priority %u", req->ifbr_portno,
                req->ifbr_priority);
            printf(" path cost %u", req->ifbr_path_cost);

            if (req->ifbr_ifsflags & IFBIF_STP) {
                  if (req->ifbr_proto <
                      sizeof(stpproto) / sizeof(stpproto[0]))
                        printf(" proto %s", stpproto[req->ifbr_proto]);
                  else
                        printf(" <unknown proto %d>",
                            req->ifbr_proto);

                  printf("\n%s", pad);
                  if (req->ifbr_role <
                      sizeof(stproles) / sizeof(stproles[0]))
                        printf("role %s", stproles[req->ifbr_role]);
                  else
                        printf("<unknown role %d>",
                            req->ifbr_role);
                  if (req->ifbr_state <
                      sizeof(stpstates) / sizeof(stpstates[0]))
                        printf(" state %s", stpstates[req->ifbr_state]);
                  else
                        printf(" <unknown state %d>",
                            req->ifbr_state);
            }
            printf("\n");
      }

      free(inbuf);
}

static void
bridge_addresses(int s, const char *prefix)
{
      struct ifbaconf ifbac;
      struct ifbareq *ifba;
      char *inbuf = NULL, *ninbuf;
      int i, len = 8192;
      struct ether_addr ea;

      for (;;) {
            ninbuf = realloc(inbuf, len);
            if (ninbuf == NULL)
                  err(1, "unable to allocate address buffer");
            ifbac.ifbac_len = len;
            ifbac.ifbac_buf = inbuf = ninbuf;
            if (do_cmd(s, BRDGRTS, &ifbac, sizeof(ifbac), 0) < 0)
                  err(1, "unable to get address cache");
            if ((ifbac.ifbac_len + sizeof(*ifba)) < len)
                  break;
            len *= 2;
      }

      for (i = 0; i < ifbac.ifbac_len / sizeof(*ifba); i++) {
            ifba = ifbac.ifbac_req + i;
            memcpy(ea.octet, ifba->ifba_dst,
                sizeof(ea.octet));
            printf("%s%s Vlan%d %s %lu ", prefix, ether_ntoa(&ea),
                ifba->ifba_vlan, ifba->ifba_ifsname, ifba->ifba_expire);
            printb("flags", ifba->ifba_flags, IFBAFBITS);
            printf("\n");
      }

      free(inbuf);
}

static void
bridge_status(int s)
{
      struct ifbropreq ifbp;
      struct ifbrparam param;
      u_int16_t pri;
      u_int8_t ht, fd, ma, hc, pro;
      u_int8_t lladdr[ETHER_ADDR_LEN];
      u_int16_t bprio;
      u_int32_t csize, ctime;

      if (do_cmd(s, BRDGGCACHE, &param, sizeof(param), 0) < 0)
            return;
      csize = param.ifbrp_csize;
      if (do_cmd(s, BRDGGTO, &param, sizeof(param), 0) < 0)
            return;
      ctime = param.ifbrp_ctime;
      if (do_cmd(s, BRDGPARAM, &ifbp, sizeof(ifbp), 0) < 0)
            return;
      pri = ifbp.ifbop_priority;
      pro = ifbp.ifbop_protocol;
      ht = ifbp.ifbop_hellotime;
      fd = ifbp.ifbop_fwddelay;
      hc = ifbp.ifbop_holdcount;
      ma = ifbp.ifbop_maxage;

      PV2ID(ifbp.ifbop_bridgeid, bprio, lladdr);
      printf("\tid %s priority %u hellotime %u fwddelay %u\n",
          ether_ntoa((struct ether_addr *)lladdr), pri, ht, fd);
      printf("\tmaxage %u holdcnt %u proto %s maxaddr %u timeout %u\n",
          ma, hc, stpproto[pro], csize, ctime);

      PV2ID(ifbp.ifbop_designated_root, bprio, lladdr);
      printf("\troot id %s priority %d ifcost %u port %u\n",
          ether_ntoa((struct ether_addr *)lladdr), bprio,
          ifbp.ifbop_root_path_cost, ifbp.ifbop_root_port & 0xfff);

      bridge_interfaces(s, "\tmember: ");

      return;

}

static void
setbridge_add(const char *val, int d, int s, const struct afswtch *afp)
{
      struct ifbreq req;

      memset(&req, 0, sizeof(req));
      strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
      if (do_cmd(s, BRDGADD, &req, sizeof(req), 1) < 0)
            err(1, "BRDGADD %s",  val);
}

static void
setbridge_delete(const char *val, int d, int s, const struct afswtch *afp)
{
      struct ifbreq req;

      memset(&req, 0, sizeof(req));
      strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
      if (do_cmd(s, BRDGDEL, &req, sizeof(req), 1) < 0)
            err(1, "BRDGDEL %s",  val);
}

static void
setbridge_discover(const char *val, int d, int s, const struct afswtch *afp)
{

      do_bridgeflag(s, val, IFBIF_DISCOVER, 1);
}

static void
unsetbridge_discover(const char *val, int d, int s, const struct afswtch *afp)
{

      do_bridgeflag(s, val, IFBIF_DISCOVER, 0);
}

static void
setbridge_learn(const char *val, int d, int s, const struct afswtch *afp)
{

      do_bridgeflag(s, val, IFBIF_LEARNING,  1);
}

static void
unsetbridge_learn(const char *val, int d, int s, const struct afswtch *afp)
{

      do_bridgeflag(s, val, IFBIF_LEARNING,  0);
}

static void
setbridge_sticky(const char *val, int d, int s, const struct afswtch *afp)
{

      do_bridgeflag(s, val, IFBIF_STICKY,  1);
}

static void
unsetbridge_sticky(const char *val, int d, int s, const struct afswtch *afp)
{

      do_bridgeflag(s, val, IFBIF_STICKY,  0);
}

static void
setbridge_span(const char *val, int d, int s, const struct afswtch *afp)
{
      struct ifbreq req;

      memset(&req, 0, sizeof(req));
      strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
      if (do_cmd(s, BRDGADDS, &req, sizeof(req), 1) < 0)
            err(1, "BRDGADDS %s",  val);
}

static void
unsetbridge_span(const char *val, int d, int s, const struct afswtch *afp)
{
      struct ifbreq req;

      memset(&req, 0, sizeof(req));
      strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
      if (do_cmd(s, BRDGDELS, &req, sizeof(req), 1) < 0)
            err(1, "BRDGDELS %s",  val);
}

static void
setbridge_stp(const char *val, int d, int s, const struct afswtch *afp)
{

      do_bridgeflag(s, val, IFBIF_STP, 1);
}

static void
unsetbridge_stp(const char *val, int d, int s, const struct afswtch *afp)
{

      do_bridgeflag(s, val, IFBIF_STP, 0);
}

static void
setbridge_edge(const char *val, int d, int s, const struct afswtch *afp)
{
      do_bridgeflag(s, val, IFBIF_BSTP_EDGE, 1);
}

static void
unsetbridge_edge(const char *val, int d, int s, const struct afswtch *afp)
{
      do_bridgeflag(s, val, IFBIF_BSTP_EDGE, 0);
}

static void
setbridge_autoedge(const char *val, int d, int s, const struct afswtch *afp)
{
      do_bridgeflag(s, val, IFBIF_BSTP_AUTOEDGE, 1);
}

static void
unsetbridge_autoedge(const char *val, int d, int s, const struct afswtch *afp)
{
      do_bridgeflag(s, val, IFBIF_BSTP_AUTOEDGE, 0);
}

static void
setbridge_ptp(const char *val, int d, int s, const struct afswtch *afp)
{
      do_bridgeflag(s, val, IFBIF_BSTP_PTP, 1);
}

static void
unsetbridge_ptp(const char *val, int d, int s, const struct afswtch *afp)
{
      do_bridgeflag(s, val, IFBIF_BSTP_PTP, 0);
}

static void
setbridge_autoptp(const char *val, int d, int s, const struct afswtch *afp)
{
      do_bridgeflag(s, val, IFBIF_BSTP_AUTOPTP, 1);
}

static void
unsetbridge_autoptp(const char *val, int d, int s, const struct afswtch *afp)
{
      do_bridgeflag(s, val, IFBIF_BSTP_AUTOPTP, 0);
}

static void
setbridge_flush(const char *val, int d, int s, const struct afswtch *afp)
{
      struct ifbreq req;

      memset(&req, 0, sizeof(req));
      req.ifbr_ifsflags = IFBF_FLUSHDYN;
      if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0)
            err(1, "BRDGFLUSH");
}

static void
setbridge_flushall(const char *val, int d, int s, const struct afswtch *afp)
{
      struct ifbreq req;

      memset(&req, 0, sizeof(req));
      req.ifbr_ifsflags = IFBF_FLUSHALL;
      if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0)
            err(1, "BRDGFLUSH");
}

static void
setbridge_static(const char *val, const char *mac, int s,
    const struct afswtch *afp)
{
      struct ifbareq req;
      struct ether_addr *ea;

      memset(&req, 0, sizeof(req));
      strlcpy(req.ifba_ifsname, val, sizeof(req.ifba_ifsname));

      ea = ether_aton(mac);
      if (ea == NULL)
            errx(1, "%s: invalid address: %s", val, mac);

      memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst));
      req.ifba_flags = IFBAF_STATIC;
      req.ifba_vlan = 1; /* XXX allow user to specify */

      if (do_cmd(s, BRDGSADDR, &req, sizeof(req), 1) < 0)
            err(1, "BRDGSADDR %s",  val);
}

static void
setbridge_deladdr(const char *val, int d, int s, const struct afswtch *afp)
{
      struct ifbareq req;
      struct ether_addr *ea;

      memset(&req, 0, sizeof(req));

      ea = ether_aton(val);
      if (ea == NULL)
            errx(1, "invalid address: %s",  val);

      memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst));

      if (do_cmd(s, BRDGDADDR, &req, sizeof(req), 1) < 0)
            err(1, "BRDGDADDR %s",  val);
}

static void
setbridge_addr(const char *val, int d, int s, const struct afswtch *afp)
{

      bridge_addresses(s, "");
}

static void
setbridge_maxaddr(const char *arg, int d, int s, const struct afswtch *afp)
{
      struct ifbrparam param;
      u_long val;

      if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
            errx(1, "invalid value: %s",  arg);

      param.ifbrp_csize = val & 0xffffffff;

      if (do_cmd(s, BRDGSCACHE, &param, sizeof(param), 1) < 0)
            err(1, "BRDGSCACHE %s",  arg);
}

static void
setbridge_hellotime(const char *arg, int d, int s, const struct afswtch *afp)
{
      struct ifbrparam param;
      u_long val;

      if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
            errx(1, "invalid value: %s",  arg);

      param.ifbrp_hellotime = val & 0xff;

      if (do_cmd(s, BRDGSHT, &param, sizeof(param), 1) < 0)
            err(1, "BRDGSHT %s",  arg);
}

static void
setbridge_fwddelay(const char *arg, int d, int s, const struct afswtch *afp)
{
      struct ifbrparam param;
      u_long val;

      if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
            errx(1, "invalid value: %s",  arg);

      param.ifbrp_fwddelay = val & 0xff;

      if (do_cmd(s, BRDGSFD, &param, sizeof(param), 1) < 0)
            err(1, "BRDGSFD %s",  arg);
}

static void
setbridge_maxage(const char *arg, int d, int s, const struct afswtch *afp)
{
      struct ifbrparam param;
      u_long val;

      if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
            errx(1, "invalid value: %s",  arg);

      param.ifbrp_maxage = val & 0xff;

      if (do_cmd(s, BRDGSMA, &param, sizeof(param), 1) < 0)
            err(1, "BRDGSMA %s",  arg);
}

static void
setbridge_priority(const char *arg, int d, int s, const struct afswtch *afp)
{
      struct ifbrparam param;
      u_long val;

      if (get_val(arg, &val) < 0 || (val & ~0xffff) != 0)
            errx(1, "invalid value: %s",  arg);

      param.ifbrp_prio = val & 0xffff;

      if (do_cmd(s, BRDGSPRI, &param, sizeof(param), 1) < 0)
            err(1, "BRDGSPRI %s",  arg);
}

static void
setbridge_protocol(const char *arg, int d, int s, const struct afswtch *afp)
{
      struct ifbrparam param;

      if (strcasecmp(arg, "stp") == 0) {
            param.ifbrp_proto = 0;
      } else if (strcasecmp(arg, "rstp") == 0) {
            param.ifbrp_proto = 2;
      } else {
            errx(1, "unknown stp protocol");
      }

      if (do_cmd(s, BRDGSPROTO, &param, sizeof(param), 1) < 0)
            err(1, "BRDGSPROTO %s",  arg);
}

static void
setbridge_holdcount(const char *arg, int d, int s, const struct afswtch *afp)
{
      struct ifbrparam param;
      u_long val;

      if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
            errx(1, "invalid value: %s",  arg);

      param.ifbrp_txhc = val & 0xff;

      if (do_cmd(s, BRDGSTXHC, &param, sizeof(param), 1) < 0)
            err(1, "BRDGSTXHC %s",  arg);
}

static void
setbridge_ifpriority(const char *ifn, const char *pri, int s,
    const struct afswtch *afp)
{
      struct ifbreq req;
      u_long val;

      memset(&req, 0, sizeof(req));

      if (get_val(pri, &val) < 0 || (val & ~0xff) != 0)
            errx(1, "invalid value: %s",  pri);

      strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
      req.ifbr_priority = val & 0xff;

      if (do_cmd(s, BRDGSIFPRIO, &req, sizeof(req), 1) < 0)
            err(1, "BRDGSIFPRIO %s",  pri);
}

static void
setbridge_ifpathcost(const char *ifn, const char *cost, int s,
    const struct afswtch *afp)
{
      struct ifbreq req;
      u_long val;

      memset(&req, 0, sizeof(req));

      if (get_val(cost, &val) < 0)
            errx(1, "invalid value: %s",  cost);

      strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
      req.ifbr_path_cost = val;

      if (do_cmd(s, BRDGSIFCOST, &req, sizeof(req), 1) < 0)
            err(1, "BRDGSIFCOST %s",  cost);
}

static void
setbridge_ifmaxaddr(const char *ifn, const char *arg, int s,
    const struct afswtch *afp)
{
      struct ifbreq req;
      u_long val;

      memset(&req, 0, sizeof(req));

      if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
            errx(1, "invalid value: %s",  arg);

      strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
      req.ifbr_addrmax = val & 0xffffffff;

      if (do_cmd(s, BRDGSIFAMAX, &req, sizeof(req), 1) < 0)
            err(1, "BRDGSIFAMAX %s",  arg);
}

static void
setbridge_timeout(const char *arg, int d, int s, const struct afswtch *afp)
{
      struct ifbrparam param;
      u_long val;

      if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
            errx(1, "invalid value: %s",  arg);

      param.ifbrp_ctime = val & 0xffffffff;

      if (do_cmd(s, BRDGSTO, &param, sizeof(param), 1) < 0)
            err(1, "BRDGSTO %s",  arg);
}

static void
setbridge_private(const char *val, int d, int s, const struct afswtch *afp)
{

      do_bridgeflag(s, val, IFBIF_PRIVATE, 1);
}

static void
unsetbridge_private(const char *val, int d, int s, const struct afswtch *afp)
{

      do_bridgeflag(s, val, IFBIF_PRIVATE, 0);
}

static struct cmd bridge_cmds[] = {
      DEF_CMD_ARG("addm",           setbridge_add),
      DEF_CMD_ARG("deletem",        setbridge_delete),
      DEF_CMD_ARG("discover",       setbridge_discover),
      DEF_CMD_ARG("-discover",      unsetbridge_discover),
      DEF_CMD_ARG("learn",          setbridge_learn),
      DEF_CMD_ARG("-learn",         unsetbridge_learn),
      DEF_CMD_ARG("sticky",         setbridge_sticky),
      DEF_CMD_ARG("-sticky",        unsetbridge_sticky),
      DEF_CMD_ARG("span",           setbridge_span),
      DEF_CMD_ARG("-span",          unsetbridge_span),
      DEF_CMD_ARG("stp",            setbridge_stp),
      DEF_CMD_ARG("-stp",           unsetbridge_stp),
      DEF_CMD_ARG("edge",           setbridge_edge),
      DEF_CMD_ARG("-edge",          unsetbridge_edge),
      DEF_CMD_ARG("autoedge",       setbridge_autoedge),
      DEF_CMD_ARG("-autoedge",      unsetbridge_autoedge),
      DEF_CMD_ARG("ptp",            setbridge_ptp),
      DEF_CMD_ARG("-ptp",           unsetbridge_ptp),
      DEF_CMD_ARG("autoptp",        setbridge_autoptp),
      DEF_CMD_ARG("-autoptp",       unsetbridge_autoptp),
      DEF_CMD("flush", 0,           setbridge_flush),
      DEF_CMD("flushall", 0,        setbridge_flushall),
      DEF_CMD_ARG2("static",        setbridge_static),
      DEF_CMD_ARG("deladdr",        setbridge_deladdr),
      DEF_CMD("addr",    1,         setbridge_addr),
      DEF_CMD_ARG("maxaddr",        setbridge_maxaddr),
      DEF_CMD_ARG("hellotime",      setbridge_hellotime),
      DEF_CMD_ARG("fwddelay",       setbridge_fwddelay),
      DEF_CMD_ARG("maxage",         setbridge_maxage),
      DEF_CMD_ARG("priority",       setbridge_priority),
      DEF_CMD_ARG("proto",          setbridge_protocol),
      DEF_CMD_ARG("holdcnt",        setbridge_holdcount),
      DEF_CMD_ARG2("ifpriority",    setbridge_ifpriority),
      DEF_CMD_ARG2("ifpathcost",    setbridge_ifpathcost),
      DEF_CMD_ARG2("ifmaxaddr",     setbridge_ifmaxaddr),
      DEF_CMD_ARG("timeout",        setbridge_timeout),
      DEF_CMD_ARG("private",        setbridge_private),
      DEF_CMD_ARG("-private",       unsetbridge_private),
};
static struct afswtch af_bridge = {
      .af_name    = "af_bridge",
      .af_af            = AF_UNSPEC,
      .af_other_status = bridge_status,
};

static __constructor void
bridge_ctor(void)
{
#define     N(a)  (sizeof(a) / sizeof(a[0]))
      int i;

      for (i = 0; i < N(bridge_cmds);  i++)
            cmd_register(&bridge_cmds[i]);
      af_register(&af_bridge);
#undef N
}

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