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- implement brctl setpathcost, setportprio, setbridgeprio, stp
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907 20 0 927 39f networking/brctl.o
This commit is contained in:
Bernhard Reutner-Fischer
parent
c2f0de5eef
commit
2b11fb483e
@ -133,6 +133,10 @@ USE_FEATURE_BRCTL_FANCY("\n" \
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" setfd <bridge <time> set bridge forward delay\n" \
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" sethello <bridge <time> set hello time\n" \
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" setmaxage <bridge <time> set max message age\n" \
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" setpathcost <bridge <cost> set path cost\n" \
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" setportprio <bridge <prio> set port priority\n" \
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" setbridgeprio <bridge <prio> set bridge priority\n" \
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" stp <bridge> [1|0] turn stp on/off\n" \
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)
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#define bunzip2_trivial_usage \
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"[OPTION]... [FILE]"
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@ -71,6 +71,7 @@ config FEATURE_BRCTL_FANCY
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setageing, setfd, sethello, setmaxage,
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setpathcost, setportprio, setbridgeprio,
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stp
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This adds about 600 bytes.
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config DNSD
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bool "dnsd"
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@ -4,6 +4,9 @@
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*
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* Copyright (C) 2008 by Bernhard Fischer
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*
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* Some helper functions from bridge-utils are
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* Copyright (C) 2000 Lennert Buytenhek
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/* This applet currently uses only the ioctl interface and no sysfs at all.
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@ -13,19 +16,21 @@
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#include <linux/sockios.h>
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#include <net/if.h>
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/* Maximum number of ports supported per bridge interface. */
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#ifndef MAX_PORTS
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#define MAX_PORTS 32
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#endif
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/* Use internal number parsing and not the "exact" conversion. */
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/* #define BRCTL_USE_INTERNAL 0 */ /* use exact conversion */
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#define BRCTL_USE_INTERNAL 1
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#ifdef ENABLE_FEATURE_BRCTL_SHOW
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#error Remove these
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#endif
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#define ENABLE_FEATURE_BRCTL_SHOW 0
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#define USE_FEATURE_BRCTL_SHOW(...)
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#if 0
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#define ENABLE_FEATURE_BRCTL_FANCY 0
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#if ENABLE_FEATURE_BRCTL_FANCY
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#define USE_FEATURE_BRCTL_FANCY(...) __VA_ARGS__
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#else
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#define USE_FEATURE_BRCTL_FANCY(...)
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#endif
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#endif
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#if ENABLE_FEATURE_BRCTL_FANCY
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#include <linux/if_bridge.h>
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/* FIXME: These 4 funcs are not really clean and could be improved */
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@ -33,7 +38,11 @@ static inline ALWAYS_INLINE void strtotimeval(struct timeval *tv,
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const char *time_str)
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{
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double secs;
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#if BRCTL_USE_INTERNAL
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if (!(secs = /*bb_*/strtod(time_str, NULL)))
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#else
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if (sscanf(time_str, "%lf", &secs) != 1)
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#endif
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bb_error_msg_and_die (bb_msg_invalid_arg, time_str, "timespec");
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tv->tv_sec = secs;
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tv->tv_usec = 1000000 * (secs - tv->tv_sec);
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@ -47,7 +56,7 @@ static inline ALWAYS_INLINE unsigned long __tv_to_jiffies(const struct timeval *
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return jif/10000;
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}
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# ifdef UNUSED && 00
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# if 00
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static void __jiffies_to_tv(struct timeval *tv, unsigned long jiffies)
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{
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unsigned long long tvusec;
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@ -63,6 +72,15 @@ static unsigned long str_to_jiffies(const char *time_str)
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strtotimeval(&tv, time_str);
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return __tv_to_jiffies(&tv);
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}
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static void arm_ioctl(unsigned long *args,
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unsigned long arg0, unsigned long arg1, unsigned long arg2)
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{
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args[0] = arg0;
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args[1] = arg1;
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args[2] = arg2;
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args[3] = 0;
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}
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#endif
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@ -73,22 +91,27 @@ int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
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static const char keywords[] ALIGN1 =
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"addbr\0" "delbr\0" "addif\0" "delif\0"
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USE_FEATURE_BRCTL_FANCY(
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"stp\0"
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"setageing\0" "setfd\0" "sethello\0" "setmaxage\0"
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"setpathcost\0" "setportprio\0" "setbridgeprio\0"
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"stp\0"
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)
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USE_FEATURE_BRCTL_SHOW("showmacs\0" "show\0");
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enum { ARG_addbr = 0, ARG_delbr, ARG_addif, ARG_delif
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USE_FEATURE_BRCTL_FANCY(,
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ARG_stp,
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ARG_setageing, ARG_setfd, ARG_sethello, ARG_setmaxage,
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ARG_setpathcost, ARG_setportprio, ARG_setbridgeprio,
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ARG_stp
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ARG_setpathcost, ARG_setportprio, ARG_setbridgeprio
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)
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USE_FEATURE_BRCTL_SHOW(, ARG_showmacs, ARG_show) };
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smallint key;
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struct ifreq ifr;
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static char info[] = "bridge %s\0 iface %s";
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char *br;
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char *br, *brif;
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#if ENABLE_FEATURE_BRCTL_FANCY
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unsigned long args[4] = {0, 0, 0, 0};
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int port;
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int tmp;
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#endif
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argv++;
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while (*argv) {
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@ -114,8 +137,6 @@ int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
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bb_show_usage();
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safe_strncpy(ifr.ifr_name, br, IFNAMSIZ);
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if (key == ARG_addif || key == ARG_delif) { /* addif or delif */
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char *brif;
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brif = *(argv++);
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if (!(ifr.ifr_ifindex = if_nametoindex(brif))) {
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bb_perror_msg_and_die(info+11, brif);
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@ -123,24 +144,74 @@ int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
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ioctl_or_perror_and_die(fd,
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key == ARG_addif ? SIOCBRADDIF : SIOCBRDELIF,
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&ifr, info, br);
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goto done;
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}
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#if ENABLE_FEATURE_BRCTL_FANCY
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if (key - ARG_delif < 5) { /* time related ops */
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ifr.ifr_data = (char *) &args;
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if (key == ARG_stp) { /* stp */
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/* FIXME: parsing yes/y/on/1 versus no/n/off/0 is too involved */
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arm_ioctl(args, BRCTL_SET_BRIDGE_STP_STATE,
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(unsigned)(**argv - '0'), 0);
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goto fire;
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}
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if ((unsigned)(key - ARG_stp) < 5) { /* time related ops */
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unsigned long op = (key == ARG_setageing) ? BRCTL_SET_AGEING_TIME :
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(key == ARG_setfd) ? BRCTL_SET_BRIDGE_FORWARD_DELAY:
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(key == ARG_sethello) ? BRCTL_SET_BRIDGE_HELLO_TIME:
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(key == ARG_setmaxage) ? BRCTL_SET_BRIDGE_MAX_AGE :
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-1/* will never be used */;
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unsigned long jiff = str_to_jiffies (*(argv++));
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unsigned long args[4] = {op, jiff, 0, 0};
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ifr.ifr_data = (char *) &args;
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xioctl(fd, SIOCDEVPRIVATE, &ifr);
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arm_ioctl(args, op, str_to_jiffies (*argv), 0);
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goto fire;
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}
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port = -1;
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if (key == ARG_setpathcost || key == ARG_setportprio) {/* get portnum */
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int ifidx[MAX_PORTS];
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unsigned i;
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if (!(port = if_nametoindex(*argv)))
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bb_error_msg_and_die(bb_msg_invalid_arg, *argv, "port");
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argv++;
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memset(ifidx, 0, sizeof ifidx);
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arm_ioctl(args, BRCTL_GET_PORT_LIST, (unsigned long)ifidx,
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MAX_PORTS);
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xioctl(fd, SIOCDEVPRIVATE, &ifr);
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for (i = 0; i < MAX_PORTS; i++)
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if (ifidx[i] == port) {
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port = i;
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break;
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}
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}
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if (key == ARG_setpathcost
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|| key == ARG_setportprio || key == ARG_setbridgeprio) {
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unsigned long op = (key == ARG_setpathcost) ? BRCTL_SET_PATH_COST :
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(key == ARG_setportprio) ? BRCTL_SET_PORT_PRIORITY :
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(key == ARG_setbridgeprio) ? BRCTL_SET_BRIDGE_PRIORITY :
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-1/* will never be used */;
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unsigned long arg1 = port;
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unsigned long arg2;
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# if BRCTL_USE_INTERNAL
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tmp = xatoi(*argv);
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# else
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if (sscanf(*argv, "%i", &tmp) != 1)
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bb_error_msg_and_die(bb_msg_invalid_arg, *argv,
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key == ARG_setpathcost ? "cost" : "prio");
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# endif
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if (key == ARG_setbridgeprio) {
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arg1 = tmp;
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arg2 = 0;
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} else
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arg2 = tmp;
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arm_ioctl(args, op, arg1, arg2);
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}
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fire:
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/* Execute the previously set command. */
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xioctl(fd, SIOCDEVPRIVATE, &ifr);
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argv++;
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#endif
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done:
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if (ENABLE_FEATURE_CLEAN_UP)
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close(fd);
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}
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out:
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USE_FEATURE_BRCTL_SHOW(out:)
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return EXIT_SUCCESS;
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}
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