31997bf223
spanning tree support. Based on Jason Wright's bridge driver from OpenBSD, and modified by Jason R. Thorpe in NetBSD. Reviewed by: mlaier, bms, green Silence from: -net Approved by: mlaier (mentor) Obtained from: NetBSD
534 lines
13 KiB
C
534 lines
13 KiB
C
/*-
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* Copyright 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_bridgevar.h>
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#include <net/route.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <err.h>
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#include <errno.h>
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#include "ifconfig.h"
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static int
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get_val(const char *cp, u_long *valp)
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{
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char *endptr;
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u_long val;
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errno = 0;
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val = strtoul(cp, &endptr, 0);
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if (cp[0] == '\0' || endptr[0] != '\0' || errno == ERANGE)
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return (-1);
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*valp = val;
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return (0);
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}
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static int
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do_cmd(int sock, u_long op, void *arg, size_t argsize, int set)
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{
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struct ifdrv ifd;
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memset(&ifd, 0, sizeof(ifd));
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strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name));
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ifd.ifd_cmd = op;
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ifd.ifd_len = argsize;
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ifd.ifd_data = arg;
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return (ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd));
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}
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static void
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do_bridgeflag(int sock, const char *ifs, int flag, int set)
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{
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struct ifbreq req;
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strlcpy(req.ifbr_ifsname, ifs, sizeof(req.ifbr_ifsname));
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if (do_cmd(sock, BRDGGIFFLGS, &req, sizeof(req), 0) < 0)
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err(1, "unable to get bridge flags");
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if (set)
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req.ifbr_ifsflags |= flag;
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else
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req.ifbr_ifsflags &= ~flag;
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if (do_cmd(sock, BRDGSIFFLGS, &req, sizeof(req), 1) < 0)
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err(1, "unable to set bridge flags");
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}
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static void
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bridge_interfaces(int s, const char *prefix, int flags)
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{
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static const char *stpstates[] = {
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"disabled",
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"listening",
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"learning",
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"forwarding",
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"blocking",
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};
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struct ifbifconf bifc;
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struct ifbreq *req;
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char *inbuf = NULL, *ninbuf;
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int i, len = 8192;
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for (;;) {
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ninbuf = realloc(inbuf, len);
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if (ninbuf == NULL)
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err(1, "unable to allocate interface buffer");
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bifc.ifbic_len = len;
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bifc.ifbic_buf = inbuf = ninbuf;
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if (do_cmd(s, BRDGGIFS, &bifc, sizeof(bifc), 0) < 0)
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err(1, "unable to get interface list");
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if ((bifc.ifbic_len + sizeof(*req)) < len)
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break;
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len *= 2;
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}
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for (i = 0; i < bifc.ifbic_len / sizeof(*req); i++) {
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req = bifc.ifbic_req + i;
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printf("%s%s ", prefix, req->ifbr_ifsname);
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printb("flags", req->ifbr_ifsflags, IFBIFBITS);
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printf("\n");
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if (!flags) continue;
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printf("%s\t", prefix);
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printf("port %u priority %u",
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req->ifbr_portno, req->ifbr_priority);
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if (req->ifbr_ifsflags & IFBIF_STP) {
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printf(" path cost %u", req->ifbr_path_cost);
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if (req->ifbr_state <
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sizeof(stpstates) / sizeof(stpstates[0]))
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printf(" %s", stpstates[req->ifbr_state]);
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else
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printf(" <unknown state %d>",
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req->ifbr_state);
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}
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printf("\n");
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}
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free(inbuf);
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}
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static void
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bridge_addresses(int s, const char *prefix)
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{
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struct ifbaconf ifbac;
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struct ifbareq *ifba;
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char *inbuf = NULL, *ninbuf;
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int i, len = 8192;
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struct ether_addr ea;
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for (;;) {
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ninbuf = realloc(inbuf, len);
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if (ninbuf == NULL)
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err(1, "unable to allocate address buffer");
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ifbac.ifbac_len = len;
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ifbac.ifbac_buf = inbuf = ninbuf;
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if (do_cmd(s, BRDGRTS, &ifbac, sizeof(ifbac), 0) < 0)
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err(1, "unable to get address cache");
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if ((ifbac.ifbac_len + sizeof(*ifba)) < len)
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break;
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len *= 2;
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}
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for (i = 0; i < ifbac.ifbac_len / sizeof(*ifba); i++) {
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ifba = ifbac.ifbac_req + i;
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memcpy(ea.octet, ifba->ifba_dst,
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sizeof(ea.octet));
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printf("%s%s %s %lu ", prefix, ether_ntoa(&ea),
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ifba->ifba_ifsname, ifba->ifba_expire);
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printb("flags", ifba->ifba_flags, IFBAFBITS);
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printf("\n");
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}
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free(inbuf);
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}
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static void
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bridge_status(int s)
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{
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struct ifbrparam param;
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u_int16_t pri;
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u_int8_t ht, fd, ma;
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if (do_cmd(s, BRDGGPRI, ¶m, sizeof(param), 0) < 0)
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return;
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pri = param.ifbrp_prio;
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if (do_cmd(s, BRDGGHT, ¶m, sizeof(param), 0) < 0)
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return;
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ht = param.ifbrp_hellotime;
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if (do_cmd(s, BRDGGFD, ¶m, sizeof(param), 0) < 0)
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return;
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fd = param.ifbrp_fwddelay;
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if (do_cmd(s, BRDGGMA, ¶m, sizeof(param), 0) < 0)
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return;
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ma = param.ifbrp_maxage;
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printf("\tpriority %u hellotime %u fwddelay %u maxage %u\n",
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pri, ht, fd, ma);
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bridge_interfaces(s, "\tmember: ", 0);
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return;
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}
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static void
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setbridge_add(const char *val, int d, int s, const struct afswtch *afp)
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{
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struct ifbreq req;
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memset(&req, 0, sizeof(req));
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strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
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if (do_cmd(s, BRDGADD, &req, sizeof(req), 1) < 0)
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err(1, "BRDGADD %s", val);
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}
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static void
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setbridge_delete(const char *val, int d, int s, const struct afswtch *afp)
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{
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struct ifbreq req;
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memset(&req, 0, sizeof(req));
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strlcpy(req.ifbr_ifsname, val, sizeof(req.ifbr_ifsname));
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if (do_cmd(s, BRDGDEL, &req, sizeof(req), 1) < 0)
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err(1, "BRDGDEL %s", val);
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}
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static void
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setbridge_discover(const char *val, int d, int s, const struct afswtch *afp)
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{
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do_bridgeflag(s, val, IFBIF_DISCOVER, 1);
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}
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static void
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unsetbridge_discover(const char *val, int d, int s, const struct afswtch *afp)
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{
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do_bridgeflag(s, val, IFBIF_DISCOVER, 0);
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}
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static void
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setbridge_learn(const char *val, int d, int s, const struct afswtch *afp)
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{
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do_bridgeflag(s, val, IFBIF_LEARNING, 1);
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}
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static void
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unsetbridge_learn(const char *val, int d, int s, const struct afswtch *afp)
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{
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do_bridgeflag(s, val, IFBIF_LEARNING, 0);
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}
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static void
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setbridge_stp(const char *val, int d, int s, const struct afswtch *afp)
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{
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do_bridgeflag(s, val, IFBIF_STP, 1);
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}
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static void
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unsetbridge_stp(const char *val, int d, int s, const struct afswtch *afp)
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{
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do_bridgeflag(s, val, IFBIF_STP, 0);
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}
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static void
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setbridge_flush(const char *val, int d, int s, const struct afswtch *afp)
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{
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struct ifbreq req;
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memset(&req, 0, sizeof(req));
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req.ifbr_ifsflags = IFBF_FLUSHDYN;
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if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0)
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err(1, "BRDGFLUSH");
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}
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static void
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setbridge_flushall(const char *val, int d, int s, const struct afswtch *afp)
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{
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struct ifbreq req;
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memset(&req, 0, sizeof(req));
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req.ifbr_ifsflags = IFBF_FLUSHALL;
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if (do_cmd(s, BRDGFLUSH, &req, sizeof(req), 1) < 0)
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err(1, "BRDGFLUSH");
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}
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static void
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setbridge_static(const char *val, const char *mac, int s,
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const struct afswtch *afp)
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{
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struct ifbareq req;
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struct ether_addr *ea;
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memset(&req, 0, sizeof(req));
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strlcpy(req.ifba_ifsname, val, sizeof(req.ifba_ifsname));
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ea = ether_aton(mac);
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if (ea == NULL)
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errx(1, "%s: invalid address: %s", val, mac);
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memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst));
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req.ifba_flags = IFBAF_STATIC;
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if (do_cmd(s, BRDGSADDR, &req, sizeof(req), 1) < 0)
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err(1, "BRDGSADDR %s", val);
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}
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static void
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setbridge_deladdr(const char *val, int d, int s, const struct afswtch *afp)
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{
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struct ifbareq req;
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struct ether_addr *ea;
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memset(&req, 0, sizeof(req));
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ea = ether_aton(val);
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if (ea == NULL)
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errx(1, "invalid address: %s", val);
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memcpy(req.ifba_dst, ea->octet, sizeof(req.ifba_dst));
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if (do_cmd(s, BRDGDADDR, &req, sizeof(req), 1) < 0)
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err(1, "BRDGDADDR %s", val);
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}
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static void
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setbridge_addr(const char *val, int d, int s, const struct afswtch *afp)
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{
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bridge_addresses(s, "");
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}
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static void
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setbridge_maxaddr(const char *arg, int d, int s, const struct afswtch *afp)
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{
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struct ifbrparam param;
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u_long val;
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if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
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errx(1, "invalid value: %s", arg);
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param.ifbrp_csize = val & 0xffffffff;
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if (do_cmd(s, BRDGSCACHE, ¶m, sizeof(param), 1) < 0)
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err(1, "BRDGSCACHE %s", arg);
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}
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static void
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setbridge_hellotime(const char *arg, int d, int s, const struct afswtch *afp)
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{
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struct ifbrparam param;
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u_long val;
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if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
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errx(1, "invalid value: %s", arg);
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param.ifbrp_hellotime = val & 0xff;
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if (do_cmd(s, BRDGSHT, ¶m, sizeof(param), 1) < 0)
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err(1, "BRDGSHT %s", arg);
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}
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static void
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setbridge_fwddelay(const char *arg, int d, int s, const struct afswtch *afp)
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{
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struct ifbrparam param;
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u_long val;
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if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
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errx(1, "invalid value: %s", arg);
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param.ifbrp_fwddelay = val & 0xff;
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if (do_cmd(s, BRDGSFD, ¶m, sizeof(param), 1) < 0)
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err(1, "BRDGSFD %s", arg);
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}
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static void
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setbridge_maxage(const char *arg, int d, int s, const struct afswtch *afp)
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{
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struct ifbrparam param;
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u_long val;
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if (get_val(arg, &val) < 0 || (val & ~0xff) != 0)
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errx(1, "invalid value: %s", arg);
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param.ifbrp_maxage = val & 0xff;
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if (do_cmd(s, BRDGSMA, ¶m, sizeof(param), 1) < 0)
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err(1, "BRDGSMA %s", arg);
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}
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static void
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setbridge_priority(const char *arg, int d, int s, const struct afswtch *afp)
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{
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struct ifbrparam param;
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u_long val;
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if (get_val(arg, &val) < 0 || (val & ~0xffff) != 0)
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errx(1, "invalid value: %s", arg);
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param.ifbrp_prio = val & 0xffff;
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if (do_cmd(s, BRDGSPRI, ¶m, sizeof(param), 1) < 0)
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err(1, "BRDGSPRI %s", arg);
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}
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static void
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setbridge_ifpriority(const char *ifn, const char *pri, int s,
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const struct afswtch *afp)
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{
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struct ifbreq req;
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u_long val;
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memset(&req, 0, sizeof(req));
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if (get_val(pri, &val) < 0 || (val & ~0xff) != 0)
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errx(1, "invalid value: %s", pri);
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strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
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req.ifbr_priority = val & 0xff;
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if (do_cmd(s, BRDGSIFPRIO, &req, sizeof(req), 1) < 0)
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err(1, "BRDGSIFPRIO %s", pri);
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}
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static void
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setbridge_ifpathcost(const char *ifn, const char *cost, int s,
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const struct afswtch *afp)
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{
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struct ifbreq req;
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u_long val;
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memset(&req, 0, sizeof(req));
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if (get_val(cost, &val) < 0 || (val & ~0xff) != 0)
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errx(1, "invalid value: %s", cost);
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strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
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req.ifbr_path_cost = val & 0xffff;
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if (do_cmd(s, BRDGSIFCOST, &req, sizeof(req), 1) < 0)
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err(1, "BRDGSIFCOST %s", cost);
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}
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static void
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setbridge_timeout(const char *arg, int d, int s, const struct afswtch *afp)
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{
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struct ifbrparam param;
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u_long val;
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if (get_val(arg, &val) < 0 || (val & ~0xffffffff) != 0)
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errx(1, "invalid value: %s", arg);
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param.ifbrp_ctime = val & 0xffffffff;
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if (do_cmd(s, BRDGSTO, ¶m, sizeof(param), 1) < 0)
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err(1, "BRDGSTO %s", arg);
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}
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static struct cmd bridge_cmds[] = {
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DEF_CMD_ARG("addm", setbridge_add),
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DEF_CMD_ARG("deletem", setbridge_delete),
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DEF_CMD_ARG("discover", setbridge_discover),
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DEF_CMD_ARG("-discover", unsetbridge_discover),
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DEF_CMD_ARG("learn", setbridge_learn),
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DEF_CMD_ARG("-learn", unsetbridge_learn),
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DEF_CMD_ARG("stp", setbridge_stp),
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DEF_CMD_ARG("-stp", unsetbridge_stp),
|
|
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_ARG2("ifpriority", setbridge_ifpriority),
|
|
DEF_CMD_ARG2("ifpathcost", setbridge_ifpathcost),
|
|
DEF_CMD_ARG("timeout", setbridge_timeout),
|
|
};
|
|
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
|
|
}
|