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Diffstat (limited to 'networking/brctl.c')
-rw-r--r--networking/brctl.c132
1 files changed, 96 insertions, 36 deletions
diff --git a/networking/brctl.c b/networking/brctl.c
index 5255a552f..7c9d90fde 100644
--- a/networking/brctl.c
+++ b/networking/brctl.c
@@ -6,6 +6,9 @@
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
+/* This applet currently uses only the ioctl interface and no sysfs at all.
+ * At the time of this writing this was considered a feature.
+ */
#include "libbb.h"
#include <linux/sockios.h>
#include <net/if.h>
@@ -15,72 +18,129 @@
#endif
#define ENABLE_FEATURE_BRCTL_SHOW 0
#define USE_FEATURE_BRCTL_SHOW(...)
-
-
-/* Fancy diagnostics -- printing add/del -- costs 49 bytes. */
#if 0
-#define BRCTL_VERBOSE(...) __VA_ARGS__
+#define ENABLE_FEATURE_BRCTL_FANCY 0
+#if ENABLE_FEATURE_BRCTL_FANCY
+#define USE_FEATURE_BRCTL_FANCY(...) __VA_ARGS__
#else
-#define BRCTL_VERBOSE(...)
+#define USE_FEATURE_BRCTL_FANCY(...)
+#endif
+#endif
+#if ENABLE_FEATURE_BRCTL_FANCY
+#include <linux/if_bridge.h>
+/* FIXME: These 4 funcs are not really clean and could be improved */
+static inline ALWAYS_INLINE void strtotimeval(struct timeval *tv,
+ const char *time_str)
+{
+ double secs;
+ if (sscanf(time_str, "%lf", &secs) != 1)
+ bb_error_msg_and_die (bb_msg_invalid_arg, time_str, "timespec");
+ tv->tv_sec = secs;
+ tv->tv_usec = 1000000 * (secs - tv->tv_sec);
+}
+
+static inline ALWAYS_INLINE unsigned long __tv_to_jiffies(const struct timeval *tv)
+{
+ unsigned long long jif;
+
+ jif = 1000000ULL * tv->tv_sec + tv->tv_usec;
+
+ return jif/10000;
+}
+# ifdef UNUSED && 00
+static void __jiffies_to_tv(struct timeval *tv, unsigned long jiffies)
+{
+ unsigned long long tvusec;
+
+ tvusec = 10000ULL*jiffies;
+ tv->tv_sec = tvusec/1000000;
+ tv->tv_usec = tvusec - 1000000 * tv->tv_sec;
+}
+# endif
+static unsigned long str_to_jiffies(const char *time_str)
+{
+ struct timeval tv;
+ strtotimeval(&tv, time_str);
+ return __tv_to_jiffies(&tv);
+}
#endif
-int brctl_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int brctl_main(int argc, char **argv)
+
+int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int brctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
int fd;
static const char keywords[] ALIGN1 =
"addbr\0" "delbr\0" "addif\0" "delif\0"
- USE_FEATURE_BRCTL_SHOW("show\0");
- enum { ARG_addbr = 1, ARG_delbr, ARG_addif, ARG_delif
- USE_FEATURE_BRCTL_SHOW(, ARG_show) };
- smalluint key;
- static char info[] = BRCTL_VERBOSE("%s ")"bridge %s\0 iface %s";
+ USE_FEATURE_BRCTL_FANCY(
+ "setageing\0" "setfd\0" "sethello\0" "setmaxage\0"
+ "setpathcost\0" "setportprio\0" "setbridgeprio\0"
+ "stp\0"
+ )
+ USE_FEATURE_BRCTL_SHOW("showmacs\0" "show\0");
+ enum { ARG_addbr = 0, ARG_delbr, ARG_addif, ARG_delif
+ USE_FEATURE_BRCTL_FANCY(,
+ ARG_setageing, ARG_setfd, ARG_sethello, ARG_setmaxage,
+ ARG_setpathcost, ARG_setportprio, ARG_setbridgeprio,
+ ARG_stp
+ )
+ USE_FEATURE_BRCTL_SHOW(, ARG_showmacs, ARG_show) };
+ smallint key;
+ struct ifreq ifr;
+ static char info[] = "bridge %s\0 iface %s";
char *br;
argv++;
while (*argv) {
- BRCTL_VERBOSE(char *op;)
-
- key = index_in_strings(keywords, *argv) + 1;
- if (key == 0) /* no match found in keywords array, bail out. */
+ key = index_in_strings(keywords, *argv);
+ if (key == -1) /* no match found in keywords array, bail out. */
bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
argv++;
#if ENABLE_FEATURE_BRCTL_SHOW
if (key == ARG_show) { /* show */
- ;
+ goto out; /* FIXME: implement me! :) */
}
#endif
- BRCTL_VERBOSE(op = (char*)((key % 2) ? "add" : "del");)
fd = xsocket(AF_INET, SOCK_STREAM, 0);
br = *(argv++);
- if (key < 3) { /* addbr or delbr */
- if (ioctl(fd, key == ARG_addbr ? SIOCBRADDBR : SIOCBRDELBR, br) < 0)
- {
- info[9 BRCTL_VERBOSE(+3)] = '\0';
- bb_perror_msg_and_die(info, BRCTL_VERBOSE(op,) br);
- }
+ if (key == ARG_addbr || key == ARG_delbr) { /* addbr or delbr */
+ ioctl_or_perror_and_die(fd,
+ key == ARG_addbr ? SIOCBRADDBR : SIOCBRDELBR,
+ br, info, br);
+ goto done;
}
- if (key > 2) { /* addif or delif */
- struct ifreq ifr;
+ if (!*argv) /* all but 'show' need at least one argument */
+ bb_show_usage();
+ safe_strncpy(ifr.ifr_name, br, IFNAMSIZ);
+ if (key == ARG_addif || key == ARG_delif) { /* addif or delif */
char *brif;
- if (!*argv)
- bb_show_usage();
brif = *(argv++);
-
if (!(ifr.ifr_ifindex = if_nametoindex(brif))) {
- bb_perror_msg_and_die(info+11 BRCTL_VERBOSE(+3), brif);
- }
- safe_strncpy(ifr.ifr_name, br, IFNAMSIZ);
- if (ioctl(fd,
- key == ARG_addif ? SIOCBRADDIF : SIOCBRDELIF, &ifr) < 0) {
- info[9 BRCTL_VERBOSE(+3)] = ',';
- bb_perror_msg_and_die (info, BRCTL_VERBOSE(op,) br, brif);
+ bb_perror_msg_and_die(info+11, brif);
}
+ ioctl_or_perror_and_die(fd,
+ key == ARG_addif ? SIOCBRADDIF : SIOCBRDELIF,
+ &ifr, info, br);
+ }
+#if ENABLE_FEATURE_BRCTL_FANCY
+ if (key - ARG_delif < 5) { /* time related ops */
+ unsigned long op = (key == ARG_setageing) ? BRCTL_SET_AGEING_TIME :
+ (key == ARG_setfd) ? BRCTL_SET_BRIDGE_FORWARD_DELAY:
+ (key == ARG_sethello) ? BRCTL_SET_BRIDGE_HELLO_TIME:
+ (key == ARG_setmaxage) ? BRCTL_SET_BRIDGE_MAX_AGE :
+ -1/*will never be used */;
+ unsigned long jiff = str_to_jiffies (*(argv++));
+ unsigned long args[4] = {op, jiff, 0, 0};
+ ifr.ifr_data = (char *) &args;
+ xioctl(fd, SIOCDEVPRIVATE, &ifr);
}
+#endif
+ done:
if (ENABLE_FEATURE_CLEAN_UP)
close(fd);
}
+ out:
return EXIT_SUCCESS;
}