--- /dev/null
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+#include <libgen.h>
+#include <netlink/route/class.h>
+#include <netlink/route/link.h>
+
+static const char *mib_prefix = ".1.3.6.1.4.1.27934.2.2";
+static char *prog;
+static int found;
+
+static struct mib {
+ char *mib_suffix;
+ char *name;
+ char *id;
+} mibv[] = {
+ { "1", "default", "01:02" },
+ { "2", "orion", "01:03" },
+ { "3", "campus", "01:04" },
+};
+
+static int mibc = sizeof(mibv)/sizeof(*mibv);
+
+static int mib_match(const char *arg, const char *mib_suffix) {
+ if (strlen(arg) < strlen(mib_prefix) + 1)
+ return 0;
+ if (strncmp(arg, mib_prefix, strlen(mib_prefix)))
+ return 0;
+ return !strcmp(arg + strlen(mib_prefix) + 1, mib_suffix);
+}
+
+static int mib_find(const char *arg) {
+ int i;
+ for (i = 0; i < mibc; i++) {
+ if (mib_match(arg, mibv[i].mib_suffix))
+ return i;
+ }
+ return -1;
+}
+
+static struct nl_handle *nl_handle;
+
+static void dump_class_stats(struct nl_object *obj, void *arg)
+{
+ struct mib *mib = arg;
+ struct rtnl_class *class = (struct rtnl_class *)obj;
+ uint32_t handle = rtnl_class_get_handle(class);
+// uint64_t rate = rtnl_class_get_stat(class, RTNL_TC_RATE_BPS);
+ uint64_t bytes = rtnl_class_get_stat(class, RTNL_TC_BYTES);
+ char id[32];
+
+ rtnl_tc_handle2str(handle, id, sizeof(id));
+
+ if (strcmp(id, mib->id))
+ return;
+
+ fprintf(stdout, "%s.%s\ncounter\n%ld\n", mib_prefix, mib->mib_suffix, bytes);
+ found = 1;
+}
+
+void die(const char *message) {
+ fprintf(stderr, "fatal: %s\n", message);
+ exit(1);
+}
+
+static void usage(void) {
+ fprintf(stderr, "usage: %s [-g | -n] %s[.X]\n", prog, mib_prefix);
+ exit(2);
+}
+
+int main(int argc, char *argv[]) {
+ struct nl_cache *link_cache, *class_cache;
+ struct rtnl_link *eth;
+ int ifindex, mibindex;
+
+ prog = basename(argv[0]);
+
+ if (argc < 2)
+ usage();
+
+ mibindex = mib_find(argv[2]);
+
+ if (!strcmp(argv[1], "-n")) {
+ if (mibindex < 0) {
+ if (!strcmp(argv[2], mib_prefix))
+ mibindex = 0;
+ } else if (mibindex == mibc - 1) {
+ exit(0);
+ } else {
+ mibindex++;
+ }
+ } else if (strcmp(argv[1], "-g")) {
+ usage();
+ }
+
+ if (mibindex < 0 || mibindex >= mibc)
+ die("invalid mib");
+
+ nl_handle = nl_handle_alloc();
+ if (!nl_handle)
+ die("unable to allocate handle");
+
+ if (nl_connect(nl_handle, NETLINK_ROUTE) < 0)
+ die("unable to connect to netlink");
+
+ link_cache = rtnl_link_alloc_cache(nl_handle);
+ if (!link_cache)
+ die("unable to allocate link cache");
+// nl_cache_mgmt_provide(link_cache);
+
+ eth = rtnl_link_get_by_name(link_cache, "eth0");
+ if (!eth)
+ die("unable to acquire eth0");
+ ifindex = rtnl_link_get_ifindex(eth);
+
+ class_cache = rtnl_class_alloc_cache(nl_handle, ifindex);
+ if (!class_cache)
+ die("unable to allocate class cache");
+
+ nl_cache_foreach(class_cache, dump_class_stats, &mibv[mibindex]);
+
+ if (!found)
+ die("class not found");
+
+ rtnl_link_put(eth);
+ nl_cache_free(class_cache);
+ nl_cache_free(link_cache);
+ nl_close(nl_handle);
+ nl_handle_destroy(nl_handle);
+ return 0;
+}