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- shrink a bit and implement time related fancy features. Improve help texts.
text data bss dec hex filename
253 20 0 273 111 networking/brctl.o.bare
613 20 0 633 279 networking/brctl.o.fancy-time
This commit is contained in:
Bernhard Reutner-Fischer
parent
78e1d58d3a
commit
1aac3ab49f
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@ -127,8 +127,13 @@
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" addbr <bridge> Create <bridge>\n" \
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" delbr <bridge> Delete <bridge>\n" \
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" addif <bridge> <iface> Add <iface> to <bridge>\n" \
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" delif <bridge> <iface> Delete <iface> from <bridge>"
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" delif <bridge> <iface> Delete <iface> from <bridge>" \
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USE_FEATURE_BRCTL_FANCY("\n" \
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" setageing <bridge <time> set ageing time\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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)
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#define bunzip2_trivial_usage \
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"[OPTION]... [FILE]"
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#define bunzip2_full_usage \
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@ -52,6 +52,25 @@ config BRCTL
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default n
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help
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Manage ethernet bridges.
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Supports addbr/delbr and addif/delif.
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#config FEATURE_BRCTL_SHOW
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# bool "support show, showmac and showstp"
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# default n
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# depends on BRCTL
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# help
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# Add support for option which print the current config:
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# showmacs, showstp, show
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config FEATURE_BRCTL_FANCY
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bool "fancy options"
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default n
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depends on BRCTL
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help
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Add support for extended option like:
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setageing, setfd, sethello, setmaxage,
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setpathcost, setportprio, setbridgeprio,
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stp
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config DNSD
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bool "dnsd"
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@ -6,6 +6,9 @@
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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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* At the time of this writing this was considered a feature.
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*/
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#include "libbb.h"
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#include <linux/sockios.h>
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#include <net/if.h>
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@ -15,72 +18,129 @@
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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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/* Fancy diagnostics -- printing add/del -- costs 49 bytes. */
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#if 0
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#define BRCTL_VERBOSE(...) __VA_ARGS__
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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 BRCTL_VERBOSE(...)
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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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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 (sscanf(time_str, "%lf", &secs) != 1)
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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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}
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static inline ALWAYS_INLINE unsigned long __tv_to_jiffies(const struct timeval *tv)
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{
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unsigned long long jif;
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jif = 1000000ULL * tv->tv_sec + tv->tv_usec;
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return jif/10000;
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}
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# ifdef UNUSED && 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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tvusec = 10000ULL*jiffies;
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tv->tv_sec = tvusec/1000000;
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tv->tv_usec = tvusec - 1000000 * tv->tv_sec;
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}
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# endif
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static unsigned long str_to_jiffies(const char *time_str)
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{
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struct timeval tv;
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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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#endif
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int brctl_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int brctl_main(int argc, char **argv)
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int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
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{
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int fd;
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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_SHOW("show\0");
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enum { ARG_addbr = 1, ARG_delbr, ARG_addif, ARG_delif
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USE_FEATURE_BRCTL_SHOW(, ARG_show) };
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smalluint key;
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static char info[] = BRCTL_VERBOSE("%s ")"bridge %s\0 iface %s";
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USE_FEATURE_BRCTL_FANCY(
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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_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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)
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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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argv++;
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while (*argv) {
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BRCTL_VERBOSE(char *op;)
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key = index_in_strings(keywords, *argv) + 1;
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if (key == 0) /* no match found in keywords array, bail out. */
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key = index_in_strings(keywords, *argv);
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if (key == -1) /* no match found in keywords array, bail out. */
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bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
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argv++;
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#if ENABLE_FEATURE_BRCTL_SHOW
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if (key == ARG_show) { /* show */
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;
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goto out; /* FIXME: implement me! :) */
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}
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#endif
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BRCTL_VERBOSE(op = (char*)((key % 2) ? "add" : "del");)
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fd = xsocket(AF_INET, SOCK_STREAM, 0);
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br = *(argv++);
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if (key < 3) { /* addbr or delbr */
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if (ioctl(fd, key == ARG_addbr ? SIOCBRADDBR : SIOCBRDELBR, br) < 0)
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{
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info[9 BRCTL_VERBOSE(+3)] = '\0';
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bb_perror_msg_and_die(info, BRCTL_VERBOSE(op,) br);
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}
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if (key == ARG_addbr || key == ARG_delbr) { /* addbr or delbr */
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ioctl_or_perror_and_die(fd,
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key == ARG_addbr ? SIOCBRADDBR : SIOCBRDELBR,
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br, info, br);
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goto done;
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}
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if (key > 2) { /* addif or delif */
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struct ifreq ifr;
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if (!*argv) /* all but 'show' need at least one argument */
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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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if (!*argv)
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bb_show_usage();
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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 BRCTL_VERBOSE(+3), brif);
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}
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safe_strncpy(ifr.ifr_name, br, IFNAMSIZ);
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if (ioctl(fd,
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key == ARG_addif ? SIOCBRADDIF : SIOCBRDELIF, &ifr) < 0) {
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info[9 BRCTL_VERBOSE(+3)] = ',';
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bb_perror_msg_and_die (info, BRCTL_VERBOSE(op,) br, brif);
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bb_perror_msg_and_die(info+11, brif);
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}
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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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}
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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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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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}
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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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return EXIT_SUCCESS;
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}
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