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author | Andrew Thompson <thompsa@FreeBSD.org> | 2005-06-05 02:59:26 +0000 |
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committer | Andrew Thompson <thompsa@FreeBSD.org> | 2005-06-05 02:59:26 +0000 |
commit | 31997bf22302ca8122dbd1959cd4d8e5f2d0412c (patch) | |
tree | 74b5fc2e556897a6d78de1c920d711b8b6606019 /sbin | |
parent | 181fc3c6ea139c0675a0e61778f4ddf84a2787e0 (diff) | |
download | src-31997bf22302ca8122dbd1959cd4d8e5f2d0412c.tar.gz src-31997bf22302ca8122dbd1959cd4d8e5f2d0412c.zip |
Add if_bridge, which provides more advanced Ethernet bridging and 802.1d
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
Notes
Notes:
svn path=/head/; revision=146985
Diffstat (limited to 'sbin')
-rw-r--r-- | sbin/ifconfig/ifbridge.c | 533 |
1 files changed, 533 insertions, 0 deletions
diff --git a/sbin/ifconfig/ifbridge.c b/sbin/ifconfig/ifbridge.c new file mode 100644 index 000000000000..bf41ea8af8b8 --- /dev/null +++ b/sbin/ifconfig/ifbridge.c @@ -0,0 +1,533 @@ +/*- + * 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[] = + "$FreeBSD$"; +#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" + +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, int flags) +{ + static const char *stpstates[] = { + "disabled", + "listening", + "learning", + "forwarding", + "blocking", + }; + struct ifbifconf bifc; + struct ifbreq *req; + char *inbuf = NULL, *ninbuf; + int i, len = 8192; + + 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"); + + if (!flags) continue; + + printf("%s\t", prefix); + printf("port %u priority %u", + req->ifbr_portno, req->ifbr_priority); + if (req->ifbr_ifsflags & IFBIF_STP) { + printf(" path cost %u", req->ifbr_path_cost); + if (req->ifbr_state < + sizeof(stpstates) / sizeof(stpstates[0])) + printf(" %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 %s %lu ", prefix, ether_ntoa(&ea), + ifba->ifba_ifsname, ifba->ifba_expire); + printb("flags", ifba->ifba_flags, IFBAFBITS); + printf("\n"); + } + + free(inbuf); +} + +static void +bridge_status(int s) +{ + struct ifbrparam param; + u_int16_t pri; + u_int8_t ht, fd, ma; + + if (do_cmd(s, BRDGGPRI, ¶m, sizeof(param), 0) < 0) + return; + pri = param.ifbrp_prio; + + if (do_cmd(s, BRDGGHT, ¶m, sizeof(param), 0) < 0) + return; + ht = param.ifbrp_hellotime; + + if (do_cmd(s, BRDGGFD, ¶m, sizeof(param), 0) < 0) + return; + fd = param.ifbrp_fwddelay; + + if (do_cmd(s, BRDGGMA, ¶m, sizeof(param), 0) < 0) + return; + ma = param.ifbrp_maxage; + + printf("\tpriority %u hellotime %u fwddelay %u maxage %u\n", + pri, ht, fd, ma); + + bridge_interfaces(s, "\tmember: ", 0); + + 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_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_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; + + 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, ¶m, 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, ¶m, 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, ¶m, 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, ¶m, 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, ¶m, sizeof(param), 1) < 0) + err(1, "BRDGSPRI %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 || (val & ~0xff) != 0) + errx(1, "invalid value: %s", cost); + + strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname)); + req.ifbr_path_cost = val & 0xffff; + + if (do_cmd(s, BRDGSIFCOST, &req, sizeof(req), 1) < 0) + err(1, "BRDGSIFCOST %s", cost); +} + +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, ¶m, sizeof(param), 1) < 0) + err(1, "BRDGSTO %s", arg); +} + +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("stp", setbridge_stp), + 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 +} |