libubox: add a package for libblobmsg-json

[openwrt.git] / package / wprobe / src / user / wprobe-util.c

diff --git a/package/wprobe/src/user/wprobe-util.c b/package/wprobe/src/user/wprobe-util.c
index 6a9868e..654442f 100644 (file)
--- a/package/wprobe/src/user/wprobe-util.c
+++ b/package/wprobe/src/user/wprobe-util.c
@@ -106,7 +106,7 @@ wprobe_dump_data(struct wprobe_iface *dev)
                list_for_each_entry(attr, &dev->link_attr, list) {
                        if (first) {
                                fprintf(stdout,
-                                       (simple_mode ? 
+                                       (simple_mode ?
                                         "[%02x:%02x:%02x:%02x:%02x:%02x]\n%s=%s\n" :
                                         "%02x:%02x:%02x:%02x:%02x:%02x: %s=%s\n"),
                                        link->addr[0], link->addr[1], link->addr[2],
@@ -142,22 +142,24 @@ static const char *attr_typestr[] = {
 static int usage(const char *prog)
 {
        fprintf(stderr,
-#ifndef NO_LOCAL_ACCESS 
+#ifndef NO_LOCAL_ACCESS
                "Usage: %s <interface>|<host>:<device>|-P [options]\n"
 #else
                "Usage: %s <host>:<device> [options]\n"
 #endif
                "\n"
                "Options:\n"
+               "  -a:            Print attributes\n"
                "  -c:            Only apply configuration\n"
                "  -d:            Delay between measurement dumps (in milliseconds, default: 1000)\n"
+               "                 A value of 0 (zero) prints once and exits; useful for scripts\n"
                "  -f:            Dump contents of layer 2 filter counters during measurement\n"
                "  -F <file>:     Apply layer 2 filters from <file>\n"
                "  -h:            This help text\n"
                "  -i <interval>: Set measurement interval\n"
                "  -m:            Run measurement loop\n"
                "  -p:            Set the TCP port for server/client (default: 17990)\n"
-#ifndef NO_LOCAL_ACCESS 
+#ifndef NO_LOCAL_ACCESS
                "  -P:            Run in proxy mode (listen on network)\n"
 #endif
                "\n"
@@ -205,13 +207,14 @@ static void show_filter(void *arg, const char *group, struct wprobe_filter_item
 
 static void loop_measurement(struct wprobe_iface *dev, bool print_filters, unsigned long delay)
 {
-       while (1) {
-               usleep(delay * 1000);
+       do {
                wprobe_update_links(dev);
                wprobe_dump_data(dev);
                if (print_filters)
                        wprobe_dump_filters(dev, simple_mode ? show_filter_simple : show_filter, NULL);
+               usleep(delay * 1000);
        }
+       while (delay);
 }
 
 static void set_filter(struct wprobe_iface *dev, const char *filename)
@@ -342,6 +345,7 @@ int main(int argc, char **argv)
                CMD_PROXY,
        } cmd = CMD_NONE;
        const char *filter = NULL;
+       bool print_attributes = false;
        bool print_filters = false;
        unsigned long delay = 1000;
        int interval = -1;
@@ -350,7 +354,7 @@ int main(int argc, char **argv)
        if (argc < 2)
                return usage(prog);
 
-#ifndef NO_LOCAL_ACCESS 
+#ifndef NO_LOCAL_ACCESS
        if (!strcmp(argv[1], "-P")) {
                while ((ch = getopt(argc - 1, argv + 1, "p:")) != -1) {
                        switch(ch) {
@@ -373,8 +377,11 @@ int main(int argc, char **argv)
        argv++;
        argc--;
 
-       while ((ch = getopt(argc, argv, "cd:fF:hi:msp:")) != -1) {
+       while ((ch = getopt(argc, argv, "acd:fF:hi:msp:")) != -1) {
                switch(ch) {
+               case 'a':
+                       print_attributes = true;
+                       break;
                case 'c':
                        cmd = CMD_CONFIG;
                        break;
@@ -430,8 +437,10 @@ int main(int argc, char **argv)
                wprobe_apply_config(dev);
        }
 
-       if (cmd != CMD_CONFIG)
-               show_attributes(dev);
+       if (cmd != CMD_CONFIG) {
+               if (print_attributes)
+                       show_attributes(dev);
+       }
        if (cmd == CMD_MEASURE)
                loop_measurement(dev, print_filters, delay);