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bridge.c
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bridge.c
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/* From: $OpenBSD: brconfig.c,v 1.27 2003/09/26 03:29:59 deraadt Exp $ */
/*
* Copyright (c) 1999, 2000 Jason L. Wright ([email protected])
* 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.
*
* 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.
*/
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <net/if_bridge.h>
#include <errno.h>
#include <string.h>
#include <err.h>
#include <sysexits.h>
#include <stdlib.h>
#include <limits.h>
#include "externs.h"
#include "bridge.h"
int clr_ifflag(int, char *, short);
int bridge_ifsetflag(int, char *, char *, u_int32_t);
int bridge_ifclrflag(int, char *, char *, u_int32_t);
int bridge_addaddr(int, char *, char *, char *);
int bridge_deladdr(int, char *, char *);
int bridge_maxaddr(int, char *, u_int32_t);
int bridge_maxage(int, char *, u_int32_t);
int bridge_priority(int, char *, u_int32_t);
int bridge_fwddelay(int, char *, u_int32_t);
int bridge_hellotime(int, char *, u_int32_t);
int bridge_ifprio(int, char *, char *, int);
int bridge_ifcost(int, char *, char *, int);
int bridge_timeout(int, char *, int);
int bridge_flush(int, char *);
int bridge_flushall(int, char *);
int bridge_add(int, char *, char *);
int bridge_delete(int, char *, char *);
int bridge_addspan(int, char *, char *);
int bridge_delspan(int, char *, char *);
int bridge_rule(int, char *, int, char **, int);
int bridge_flushrule(int, char *, char *);
void bridge_badrule(int, char **, int, short);
void bridge_showrule(struct ifbrlreq *, char *, FILE *);
int bridge_confaddrs(int, char *, char *, FILE *);
char *stpstates[] = {
"disabled",
"listening",
"learning",
"forwarding",
"blocking",
};
#define BRPORT_MEMBER 0
#define BRPORT_SPAN 1
#define BRPORT_BLOCKNONIP 2
#define BRPORT_DISCOVER 3
#define BRPORT_LEARN 4
#define BRPORT_STP 5
struct brc {
char *name;
int type;
};
struct brd {
char *name;
char *descr;
int type;
};
static struct brc brps[] = {
{ "member", BRPORT_MEMBER },
{ "span", BRPORT_SPAN },
{ "blocknonip", BRPORT_BLOCKNONIP },
{ "discover", BRPORT_DISCOVER },
{ "learning", BRPORT_LEARN },
{ "stp", BRPORT_STP },
{ 0, 0 }
};
int
brport(char *ifname, int ifs, int argc, char **argv)
{
int set, i;
struct brc *x;
if (NO_ARG(argv[0])) {
set = 0;
argv++;
argc--;
} else
set = 1;
x = (struct brc *) genget(argv[0], (char **)brps, sizeof(struct brc));
if (x == 0) {
printf("%% Internal error - Invalid argument %s\n", argv[0]);
return 0;
} else if (Ambiguous(x)) {
printf("%% Internal error - Ambiguous argument %s\n", argv[0]);
return 0;
}
argv++;
argc--;
if (argc == 0) {
printf("%% %s <if> [if]...\n", x->name);
printf("%% no %s <if> [if]...\n", x->name);
return(0);
}
for (i = 0; i < argc; i++) {
if (!is_valid_ifname(argv[i]) ||
is_bridge(ifs, argv[i])) {
printf("%% Invalid interface name %s\n", argv[i]);
continue;
}
switch(x->type) {
case BRPORT_MEMBER:
if (set) {
/* adding a member activates a bridge */
set_ifflag(ifs, ifname, IFF_UP);
bridge_add(ifs, ifname, argv[i]);
} else
bridge_delete(ifs, ifname, argv[i]);
break;
case BRPORT_SPAN:
if (set)
bridge_addspan(ifs, ifname, argv[i]);
else
bridge_delspan(ifs, ifname, argv[i]);
break;
case BRPORT_BLOCKNONIP:
if (set)
bridge_ifsetflag(ifs, ifname, argv[i],
IFBIF_BLOCKNONIP);
else
bridge_ifclrflag(ifs, ifname, argv[i],
IFBIF_BLOCKNONIP);
break;
case BRPORT_DISCOVER:
if (set)
bridge_ifsetflag(ifs, ifname, argv[i],
IFBIF_DISCOVER);
else
bridge_ifclrflag(ifs, ifname, argv[i],
IFBIF_DISCOVER);
break;
case BRPORT_LEARN:
if (set)
bridge_ifsetflag(ifs, ifname, argv[i],
IFBIF_LEARNING);
else
bridge_ifclrflag(ifs, ifname, argv[i],
IFBIF_LEARNING);
break;
case BRPORT_STP:
if (set)
bridge_ifsetflag(ifs, ifname, argv[i],
IFBIF_STP);
else
bridge_ifclrflag(ifs, ifname, argv[i],
IFBIF_STP);
break;
}
}
return(0);
}
#define BRVAL_MAXADDR 0
#define BRVAL_TIMEOUT 1
#define BRVAL_MAXAGE 2
#define BRVAL_FWDDELAY 3
#define BRVAL_HELLOTIME 4
#define BRVAL_PRIORITY 5
static struct brc brvs[] = {
{ "maxaddr", BRVAL_MAXADDR },
{ "timeout", BRVAL_TIMEOUT },
{ "maxage", BRVAL_MAXAGE },
{ "fwddelay", BRVAL_FWDDELAY },
{ "hellotime", BRVAL_HELLOTIME },
{ "priority", BRVAL_PRIORITY },
{ 0, 0 }
};
int
brval(char *ifname, int ifs, int argc, char **argv)
{
int set;
u_int32_t val = 0;
const char *errmsg = NULL;
struct brc *x;
if (NO_ARG(argv[0])) {
set = 0;
argv++;
argc--;
} else
set = 1;
x = (struct brc *) genget(argv[0], (char **)brvs, sizeof(struct brc));
if (x == 0) {
printf("%% Internal error - Invalid argument %s\n", argv[0]);
return 0;
} else if (Ambiguous(x)) {
printf("%% Internal error - Ambiguous argument %s\n", argv[0]);
return 0;
}
argv++;
argc--;
if ((set && argc != 1) || (!set && argc > 1)) {
printf("%% %s <val>\n", x->name);
printf("%% no %s [val]\n", x->name);
return(0);
}
if (set) {
errno = 0;
val = strtonum(argv[0], 0, ULONG_MAX, &errmsg);
if (errmsg) {
printf("%% invalid %s argument %s: %s\n", x->name,
argv[0], errmsg);
return(0);
}
}
switch(x->type) {
case BRVAL_MAXADDR:
if (set)
bridge_maxaddr(ifs, ifname, val);
else
bridge_maxaddr(ifs, ifname, DEFAULT_MAXADDR);
break;
case BRVAL_TIMEOUT:
if (set)
bridge_timeout(ifs, ifname, (int)val);
else
bridge_timeout(ifs, ifname, DEFAULT_TIMEOUT);
break;
case BRVAL_MAXAGE:
if (val > 0xff) {
printf("%% maxage too large\n");
return(0);
}
if (set)
bridge_maxage(ifs, ifname, val);
else
bridge_maxage(ifs, ifname, DEFAULT_MAXAGE);
break;
case BRVAL_FWDDELAY:
if (val > 0xff) {
printf("%% fwddelay too large\n");
return(0);
}
if (set)
bridge_fwddelay(ifs, ifname, val);
else
bridge_fwddelay(ifs, ifname, DEFAULT_FWDDELAY);
break;
case BRVAL_HELLOTIME:
if (val > 0xff) {
printf("%% hellotime too large\n");
return(0);
}
if (set)
bridge_hellotime(ifs, ifname, val);
else
bridge_hellotime(ifs, ifname, DEFAULT_HELLOTIME);
break;
case BRVAL_PRIORITY:
if (val > 0xffff) {
printf("%% priority too large\n");
return(0);
}
if (set)
bridge_priority(ifs, ifname, val);
else
bridge_priority(ifs, ifname, DEFAULT_PRIORITY);
break;
}
return(0);
}
int
brrule(char *ifname, int ifs, int argc, char **argv)
{
if (NO_ARG(argv[0])) {
printf("%% all rules for a member must be applied in order\n");
printf("%% use flush bridge-rules <bridge> <member>\n");
printf("%% to erase all rules on interface <member>\n");
return(0);
}
argv++;
argc--;
if (argc == 0) {
printf("%% rule {block | pass} {in | out | in/out} on <member> [{src} mac] [{dst} mac]\n");
return(0);
}
bridge_rule(ifs, ifname, argc, argv, -1);
return(0);
}
int
brstatic(char *ifname, int ifs, int argc, char **argv)
{
int set;
if (NO_ARG(argv[0])) {
set = 0;
argv++;
argc--;
} else
set = 1;
argv++;
argc--;
if ((set && argc != 2) || ((!set && argc <1) || (!set && argc > 2))) {
printf("%% static <mac address> <member>\n");
printf("%% no static <mac address> [member]\n");
return(0);
}
if (argv[1] && (!is_valid_ifname(argv[1]) || is_bridge(ifs, argv[1])))
{
printf("%% invalid member: %s\n", argv[1]);
return(0);
}
if (set)
bridge_addaddr(ifs, ifname, argv[1], argv[0]);
else
bridge_deladdr(ifs, ifname, argv[0]);
return(0);
}
#define BRPRI_IFPRIORITY 0
#define BRPRI_IFCOST 1
static struct brd brds[] = {
{ "ifpriority", "priority", BRPRI_IFPRIORITY },
{ "ifcost", "cost", BRPRI_IFCOST },
{ 0, 0, 0 }
};
int
brpri(char *ifname, int ifs, int argc, char **argv)
{
int set, val;
const char *errmsg = NULL;
struct brd *x;
if (NO_ARG(argv[0])) {
set = 0;
argv++;
argc--;
} else
set = 1;
x = (struct brd *) genget(argv[0], (char **)brds, sizeof(struct brd));
if (x == 0) {
printf("%% Internal error - Invalid argument %s\n", argv[0]);
return 0;
} else if (Ambiguous(x)) {
printf("%% Internal error - Ambiguous argument %s\n", argv[0]);
return 0;
}
argv++;
argc--;
/*
* the ifpriority value is ignored for 'no ifpriority' but
* we allow it anyways to retain compatibility with the
* set form of this command
*/
if ((set && argc != 2) || (!set && (argc < 1 || argc > 2))) {
printf("%% %s <member> <%s>\n", x->name, x->descr);
printf("%% no %s <member> [%s]\n", x->name, x->descr);
return(0);
}
if (!is_valid_ifname(argv[0]) || is_bridge(ifs, argv[0]))
{
printf("%% invalid member name: %s", argv[0]);
return(0);
}
errno = 0;
val = strtonum(argv[1], 0, 0xff, &errmsg);
if (errmsg) {
printf("%% invalid priority %s: %s\n", argv[1], errmsg);
return (0);
}
switch(x->type) {
case BRPRI_IFPRIORITY:
if (set) {
if (val > 0xff) {
printf("%% %s exceeds limit\n", x->name);
return(0);
}
bridge_ifprio(ifs, ifname, argv[0], val);
} else {
bridge_ifprio(ifs, ifname, argv[0], DEFAULT_IFPRIORITY);
}
break;
case BRPRI_IFCOST:
if (set) {
if (val > 65535) {
printf("%% %s exceeds limit\n", x->name);
return(0);
}
bridge_ifcost(ifs, ifname, argv[0], val);
} else {
bridge_ifcost(ifs, ifname, argv[0], DEFAULT_IFCOST);
}
break;
}
return(0);
}
/*
* flush wrappers here
*/
int
flush_bridgedyn(char *brdg)
{
int ifs;
ifs = socket(AF_INET, SOCK_DGRAM, 0);
if (ifs < 0) {
printf("%% socket: %s\n", strerror(errno));
return(1);
}
if (!is_bridge(ifs, brdg)) {
printf("%% %s is not a bridge\n", brdg);
close(ifs);
return(1);
}
bridge_flush(ifs, brdg);
close(ifs);
return(0);
}
int
flush_bridgeall(char *brdg)
{
int ifs;
ifs = socket(AF_INET, SOCK_DGRAM, 0);
if (ifs < 0) {
printf("%% socket: %s\n", strerror(errno));
return(1);
}
if (!is_bridge(ifs, brdg)) {
printf("%% %s is not a bridge\n", brdg);
close(ifs);
return(1);
}
bridge_flushall(ifs, brdg);
close(ifs);
return(0);
}
int
flush_bridgerule(char *brdg, char *member)
{
int ifs;
ifs = socket(AF_INET, SOCK_DGRAM, 0);
if (ifs < 0) {
printf("%% socket: %s\n", strerror(errno));
return(1);
}
if (!is_bridge(ifs, brdg)) {
printf("%% %s is not a bridge\n", brdg);
close(ifs);
return(1);
}
if (!is_valid_ifname(member) || is_bridge(ifs, member)) {
printf("%% %s is not a valid interface\n", member);
close(ifs);
return(1);
}
bridge_flushrule(ifs, brdg, member);
close(ifs);
return(0);
}
/*
* most of the following resembles the original brconfig.c
*/
int
bridge_ifsetflag(int s, char *brdg, char *ifsname, u_int32_t flag)
{
struct ifbreq req;
strlcpy(req.ifbr_name, brdg, sizeof(req.ifbr_name));
strlcpy(req.ifbr_ifsname, ifsname, sizeof(req.ifbr_ifsname));
if (ioctl(s, SIOCBRDGGIFFLGS, (caddr_t)&req) < 0) {
if (errno == ESRCH)
printf("%% %s is not a member of %s\n", ifsname, brdg);
else
printf("%% cannot get flags for %s on %s: %s\n",
ifsname, brdg, strerror(errno));
return (EX_IOERR);
}
req.ifbr_ifsflags |= flag;
if (ioctl(s, SIOCBRDGSIFFLGS, (caddr_t)&req) < 0) {
printf("%% cannot set flags for %s on %s: %s\n", ifsname, brdg,
strerror(errno));
return (EX_IOERR);
}
return (0);
}
int
bridge_ifclrflag(int s, char *brdg, char *ifsname, u_int32_t flag)
{
struct ifbreq req;
strlcpy(req.ifbr_name, brdg, sizeof(req.ifbr_name));
strlcpy(req.ifbr_ifsname, ifsname, sizeof(req.ifbr_ifsname));
if (ioctl(s, SIOCBRDGGIFFLGS, (caddr_t)&req) < 0) {
if (errno == ESRCH)
printf("%% %s is not a member of %s\n", ifsname, brdg);
else
printf("%% cannot get flags for %s on %s: %s\n",
ifsname, brdg, strerror(errno));
return (EX_IOERR);
}
req.ifbr_ifsflags &= ~flag;
if (ioctl(s, SIOCBRDGSIFFLGS, (caddr_t)&req) < 0) {
printf("%% cannot set flags for %s on %s: %s\n", ifsname, brdg,
strerror(errno));
return (EX_IOERR);
}
return (0);
}
/*
* like set_ifflags but only sets one flag
*/
int
set_ifflag(int s, char *brdg, short f)
{
struct ifreq ifr;
strlcpy(ifr.ifr_name, brdg, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
printf("%% cannot get flags for %s: %s\n", brdg,
strerror(errno));
if (errno == EPERM)
return (EX_NOPERM);
return (EX_IOERR);
}
ifr.ifr_flags |= f;
if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
printf("%% cannot set flags for %s: %s\n", brdg,
strerror(errno));
if (errno == EPERM)
return (EX_NOPERM);
return (EX_IOERR);
}
return (0);
}
int
clr_ifflag(int s, char *brdg, short f)
{
struct ifreq ifr;
strlcpy(ifr.ifr_name, brdg, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
printf("%% cannot get flags for %s: %s\n", brdg,
strerror(errno));
if (errno == EPERM)
return (EX_NOPERM);
return (EX_IOERR);
}
ifr.ifr_flags &= ~(f);
if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
printf("%% cannot set flags for %s: %s\n", brdg,
strerror(errno));
if (errno == EPERM)
return (EX_NOPERM);
return (EX_IOERR);
}
return (0);
}
int
bridge_flushall(int s, char *brdg)
{
struct ifbreq req;
strlcpy(req.ifbr_name, brdg, sizeof(req.ifbr_name));
req.ifbr_ifsflags = IFBF_FLUSHALL;
if (ioctl(s, SIOCBRDGFLUSH, &req) < 0) {
printf("%% cannot flush all: SIOCBRDGFLUSH: %s\n",
strerror(errno));
return (EX_IOERR);
}
return (0);
}
int
bridge_flush(int s, char *brdg)
{
struct ifbreq req;
strlcpy(req.ifbr_name, brdg, sizeof(req.ifbr_name));
req.ifbr_ifsflags = IFBF_FLUSHDYN;
if (ioctl(s, SIOCBRDGFLUSH, &req) < 0) {
printf("%% cannot flush: SIOCBRDGFLUSH: %s\n",
strerror(errno));
return (EX_IOERR);
}
return (0);
}
long
bridge_cfg(int s, char *brdg, int type)
{
struct ifbrparam ifbp;
long val = 0;
strlcpy(ifbp.ifbrp_name, brdg, sizeof(ifbp.ifbrp_name));
switch (type) {
case PRIORITY:
if (ioctl(s, SIOCBRDGGPRI, (caddr_t)&ifbp)) {
printf("%% unable to get priority: SIOCBRDGGPRI: %s\n",
strerror(errno));
return (-1);
}
val = ifbp.ifbrp_prio;
break;
case HELLOTIME:
if (ioctl(s, SIOCBRDGGHT, (caddr_t)&ifbp)) {
printf("%% unable to get hellotime: SIOCBRDGGHT: %s\n",
strerror(errno));
return (-1);
}
val = ifbp.ifbrp_hellotime;
break;
case FWDDELAY:
if (ioctl(s, SIOCBRDGGFD, (caddr_t)&ifbp)) {
printf("%% unable to get fwddelay: SIOCBRDGGFD: %s\n",
strerror(errno));
return (-1);
}
val = ifbp.ifbrp_fwddelay;
break;
case MAXAGE:
if (ioctl(s, SIOCBRDGGMA, (caddr_t)&ifbp)) {
printf("%% unable to get maxage: SIOCBRDGGMA: %s\n",
strerror(errno));
return (-1);
}
val = ifbp.ifbrp_maxage;
break;
case MAXADDR:
if (ioctl(s, SIOCBRDGGCACHE, (caddr_t)&ifbp) < 0) {
printf("%% unable to get maxaddr: SIOCBRDGGCACHE: %s\n",
strerror(errno));
return (-1);
}
val = ifbp.ifbrp_csize;
break;
case TIMEOUT:
if (ioctl(s, SIOCBRDGGTO, (caddr_t)&ifbp) < 0) {
printf("%% unable to get timeout: SIOCBRDGGTO: %s\n",
strerror(errno));
return (-1);
}
val = ifbp.ifbrp_ctime;
break;
}
return (val);
}
/*
* hacked up bridge_list()
*
* conf() will ask us for a text list of interfaces filled into br_str
* except for ifpriority which will be filled in with "ifpriority"
* as well since it returns multiple lines
* show_int() will ask for SHOW_STPSTATE which has NULL br/str_len
*/
int
bridge_list(int s, char *brdg, char *delim, char *br_str, int str_len, int type)
{
struct ifbreq *reqp;
struct ifbifconf bifc;
u_int i, len = 8192;
int identified = 0;
char buf[256], *inbuf = NULL, *inb;
while (1) {
strlcpy(bifc.ifbic_name, brdg, sizeof(bifc.ifbic_name));
bifc.ifbic_len = len;
inb = realloc(inbuf, len);
if (inb == NULL) {
free(inbuf);
printf("%% bridge_list: malloc: %s\n", strerror(errno));
return(0);
}
bifc.ifbic_buf = inbuf = inb;
if (ioctl(s, SIOCBRDGIFS, &bifc) < 0) {
printf("%% unable to get interfaces: SIOCBRDGIFS: %s\n",
strerror(errno));
free(inbuf);
return(0);
}
if (bifc.ifbic_len + sizeof(*reqp) < len)
break;
len *= 2;
}
/* clear out br_str */
br_str[0] = '\0';
for (i = 0; i < bifc.ifbic_len / sizeof(*reqp); i++) {
reqp = bifc.ifbic_req + i;
switch (type) {
case CONF_IFPRIORITY:
if((reqp->ifbr_ifsflags & IFBIF_STP) &&
(reqp->ifbr_priority != DEFAULT_IFPRIORITY)) {
/* rework flow at some point XXX */
snprintf(buf, sizeof(buf),
"%sifpriority %s %u\n", delim,
reqp->ifbr_ifsname, reqp->ifbr_priority);
strlcat(br_str, buf, str_len);
identified++;
}
break;
case CONF_IFCOST:
if((reqp->ifbr_ifsflags & IFBIF_STP) &&
(reqp->ifbr_path_cost != DEFAULT_IFCOST)) {
/* rework flow at some point XXX */
snprintf(buf, sizeof(buf),
"%sifcost %s %u\n", delim,
reqp->ifbr_ifsname, reqp->ifbr_path_cost);
strlcat(br_str, buf, str_len);
identified++;
}
break;
case SHOW_STPSTATE:
if (reqp->ifbr_ifsflags & IFBIF_STP) {
snprintf(buf, sizeof(buf),
"%s%s: %s\n", delim, reqp->ifbr_ifsname,
stpstates[reqp->ifbr_state]);
strlcat(br_str, buf, str_len);
identified++;
}
break;
case MEMBER:
if (reqp->ifbr_ifsname) {
snprintf(buf, sizeof(buf), "%s ",
reqp->ifbr_ifsname);
strlcat(br_str, buf, str_len);
identified++;
}
break;
case NOLEARNING:
if (!(reqp->ifbr_ifsflags & IFBIF_LEARNING) &&
!(reqp->ifbr_ifsflags & IFBIF_SPAN)) {
snprintf(buf, sizeof(buf), "%s ",
reqp->ifbr_ifsname);
strlcat(br_str, buf, str_len);
identified++;
}
break;
case NODISCOVER:
if (!(reqp->ifbr_ifsflags & IFBIF_DISCOVER) &&
!(reqp->ifbr_ifsflags & IFBIF_SPAN)) {
snprintf(buf, sizeof(buf), "%s ",
reqp->ifbr_ifsname);
strlcat(br_str, buf, str_len);
identified++;
}
break;
case BLOCKNONIP:
if (reqp->ifbr_ifsflags & IFBIF_BLOCKNONIP) {
snprintf(buf, sizeof(buf), "%s ",
reqp->ifbr_ifsname);
strlcat(br_str, buf, str_len);
identified++;
}
break;
case STP:
if (reqp->ifbr_ifsflags & IFBIF_STP) {
snprintf(buf, sizeof(buf), "%s ",
reqp->ifbr_ifsname);
strlcat(br_str, buf, str_len);
identified++;
}
break;
case SPAN:
if (reqp->ifbr_ifsflags & IFBIF_SPAN) {
snprintf(buf, sizeof(buf), "%s ",
reqp->ifbr_ifsname);
strlcat(br_str, buf, str_len);
identified++;
}
break;
}
}
free(bifc.ifbic_buf);
return (identified);
}
int
bridge_add(int s, char *brdg, char *ifn)
{
struct ifbreq req;
strlcpy(req.ifbr_name, brdg, sizeof(req.ifbr_name));
strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
if (ioctl(s, SIOCBRDGADD, &req) < 0) {
printf("%% cannot add member %s on %s: %s\n", ifn, brdg,
strerror(errno));
if (errno == EPERM)
return (EX_NOPERM);
return (EX_IOERR);
}
return (0);
}
int
bridge_delete(int s, char *brdg, char *ifn)
{
struct ifbreq req;
strlcpy(req.ifbr_name, (char *)brdg, sizeof(req.ifbr_name));
strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
if (ioctl(s, SIOCBRDGDEL, &req) < 0) {
printf("%% unable to delete member: SIOCBRDGDEL: %s\n",
strerror(errno));
if (errno == EPERM)
return (EX_NOPERM);
return (EX_IOERR);
}
return (0);
}
int
bridge_addspan(int s, char *brdg, char *ifn)
{
struct ifbreq req;
strlcpy(req.ifbr_name, brdg, sizeof(req.ifbr_name));
strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
if (ioctl(s, SIOCBRDGADDS, &req) < 0) {
printf("%% cannot add span %s on %s: %s\n", ifn, brdg,
strerror(errno));
if (errno == EPERM)
return (EX_NOPERM);
return (EX_IOERR);
}
return (0);
}
int
bridge_delspan(int s, char *brdg, char *ifn)
{
struct ifbreq req;
strlcpy(req.ifbr_name, brdg, sizeof(req.ifbr_name));
strlcpy(req.ifbr_ifsname, ifn, sizeof(req.ifbr_ifsname));
if (ioctl(s, SIOCBRDGDELS, &req) < 0) {
printf("%% cannot delete span %s on %s: %s\n", ifn, brdg,
strerror(errno));
if (errno == EPERM)
return (EX_NOPERM);
return (EX_IOERR);
}
return (0);
}
int
bridge_timeout(int s, char *brdg, int val)
{
struct ifbrparam bp;
strlcpy(bp.ifbrp_name, brdg, sizeof(bp.ifbrp_name));
bp.ifbrp_ctime = val;
if (ioctl(s, SIOCBRDGSTO, (caddr_t)&bp) < 0) {
printf("%% bridge_timeout: SIOCBRDGSTO: %s\n",
strerror(errno));
return (EX_IOERR);
}
return (0);
}
int
bridge_maxage(int s, char *brdg, u_int32_t val)
{
struct ifbrparam bp;
strlcpy(bp.ifbrp_name, brdg, sizeof(bp.ifbrp_name));
bp.ifbrp_maxage = val;
if (ioctl(s, SIOCBRDGSMA, (caddr_t)&bp) < 0) {
printf("%% unable to set maxage: SIOCBRDGSMA: %s\n",
strerror(errno));
return (EX_IOERR);
}
return (0);
}
int
bridge_priority(int s, char *brdg, u_int32_t val)
{
struct ifbrparam bp;
strlcpy(bp.ifbrp_name, brdg, sizeof(bp.ifbrp_name));
bp.ifbrp_prio = val;
if (ioctl(s, SIOCBRDGSPRI, (caddr_t)&bp) < 0) {
printf("%% unable to set priority: SIOCBRDGSPRI: %s\n",
strerror(errno));
return (EX_IOERR);
}
return (0);
}
int
bridge_fwddelay(int s, char *brdg, u_int32_t val)
{
struct ifbrparam bp;