LXR iproute2/ip/iplink

   1/*
   2 * iplink_stats.c       Extended statistics commands
   3 *
   4 *              This program is free software; you can redistribute it and/or
   5 *              modify it under the terms of the GNU General Public License
   6 *              as published by the Free Software Foundation; either version
   7 *              2 of the License, or (at your option) any later version.
   8 *
   9 * Authors:     Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
  10 */
  11
  12#include <stdio.h>
  13#include <stdlib.h>
  14#include <string.h>
  15#include <linux/if_link.h>
  16#include <netinet/ether.h>
  17
  18#include "utils.h"
  19#include "ip_common.h"
  20
  21static void print_explain(FILE *f)
  22{
  23        fprintf(f, "Usage: ... xstats type TYPE [ ARGS ]\n");
  24}
  25
  26int iplink_ifla_xstats(int argc, char **argv)
  27{
  28        struct link_util *lu = NULL;
  29        __u32 filt_mask;
  30
  31        if (!argc) {
  32                fprintf(stderr, "xstats: missing argument\n");
  33                return -1;
  34        }
  35
  36        if (matches(*argv, "type") == 0) {
  37                NEXT_ARG();
  38                lu = get_link_kind(*argv);
  39                if (!lu)
  40                        invarg("invalid type", *argv);
  41        } else if (matches(*argv, "help") == 0) {
  42                print_explain(stdout);
  43                return 0;
  44        } else {
  45                invarg("unknown argument", *argv);
  46        }
  47
  48        if (!lu) {
  49                print_explain(stderr);
  50                return -1;
  51        }
  52
  53        if (!lu->print_ifla_xstats) {
  54                fprintf(stderr, "xstats: link type %s doesn't support xstats\n",
  55                        lu->id);
  56                return -1;
  57        }
  58
  59        if (lu->parse_ifla_xstats &&
  60            lu->parse_ifla_xstats(lu, argc-1, argv+1))
  61                return -1;
  62
  63        if (strstr(lu->id, "_slave"))
  64                filt_mask = IFLA_STATS_FILTER_BIT(IFLA_STATS_LINK_XSTATS_SLAVE);
  65        else
  66                filt_mask = IFLA_STATS_FILTER_BIT(IFLA_STATS_LINK_XSTATS);
  67
  68        if (rtnl_statsdump_req_filter(&rth, AF_UNSPEC, filt_mask) < 0) {
  69                perror("Cannont send dump request");
  70                return -1;
  71        }
  72
  73        new_json_obj(json);
  74        if (rtnl_dump_filter(&rth, lu->print_ifla_xstats, stdout) < 0) {
  75                delete_json_obj();
  76                fprintf(stderr, "Dump terminated\n");
  77                return -1;
  78        }
  79        delete_json_obj();
  80
  81        return 0;
  82}
  83