bridge/bridge.c

   1 /*
   2  * Get/set/delete bridge with netlink
   3  *
   4  * Authors:     Stephen Hemminger <shemminger@vyatta.com>
   5  */
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <unistd.h>
  10 #include <sys/socket.h>
  11 #include <string.h>
  12
  13 #include "SNAPSHOT.h"
  14 #include "utils.h"
  15 #include "br_common.h"
  16
  17 struct rtnl_handle rth = { .fd = -1 };
  18 int preferred_family = AF_UNSPEC;
  19 int resolve_hosts;
  20 int show_stats;
  21 int show_details;
  22 int timestamp;
  23
  24 static void usage(void) __attribute__((noreturn));
  25
  26 static void usage(void)
  27 {
  28         fprintf(stderr,
  29 "Usage: bridge [ OPTIONS ] OBJECT { COMMAND | help }\n"
  30 "where  OBJECT := { fdb |  monitor }\n"
  31 "       OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails]\n" );
  32         exit(-1);
  33 }
  34
  35 static int do_help(int argc, char **argv)
  36 {
  37         usage();
  38 }
  39
  40
  41 static const struct cmd {
  42         const char *cmd;
  43         int (*func)(int argc, char **argv);
  44 } cmds[] = {
  45         { "fdb",        do_fdb },
  46         { "monitor",    do_monitor },
  47         { "help",       do_help },
  48         { 0 }
  49 };
  50
  51 static int do_cmd(const char *argv0, int argc, char **argv)
  52 {
  53         const struct cmd *c;
  54
  55         for (c = cmds; c->cmd; ++c) {
  56                 if (matches(argv0, c->cmd) == 0)
  57                         return c->func(argc-1, argv+1);
  58         }
  59
  60         fprintf(stderr, "Object \"%s\" is unknown, try \"bridge help\".\n", argv0);
  61         return -1;
  62 }
  63
  64 int
  65 main(int argc, char **argv)
  66 {
  67         while (argc > 1) {
  68                 char *opt = argv[1];
  69                 if (strcmp(opt,"--") == 0) {
  70                         argc--; argv++;
  71                         break;
  72                 }
  73                 if (opt[0] != '-')
  74                         break;
  75                 if (opt[1] == '-')
  76                         opt++;
  77
  78                 if (matches(opt, "-help") == 0) {
  79                         usage();
  80                 } else if (matches(opt, "-Version") == 0) {
  81                         printf("bridge utility, 0.0\n");
  82                         exit(0);
  83                 } else if (matches(opt, "-stats") == 0 ||
  84                            matches(opt, "-statistics") == 0) {
  85                         ++show_stats;
  86                 } else if (matches(opt, "-details") == 0) {
  87                         ++show_details;
  88                 } else if (matches(opt, "-timestamp") == 0) {
  89                         ++timestamp;
  90                 } else if (matches(opt, "-family") == 0) {
  91                         argc--;
  92                         argv++;
  93                         if (argc <= 1)
  94                                 usage();
  95                         if (strcmp(argv[1], "inet") == 0)
  96                                 preferred_family = AF_INET;
  97                         else if (strcmp(argv[1], "inet6") == 0)
  98                                 preferred_family = AF_INET6;
  99                         else if (strcmp(argv[1], "help") == 0)
 100                                 usage();
 101                         else
 102                                 invarg("invalid protocol family", argv[1]);
 103                 } else if (strcmp(opt, "-4") == 0) {
 104                         preferred_family = AF_INET;
 105                 } else if (strcmp(opt, "-6") == 0) {
 106                         preferred_family = AF_INET6;
 107                 } else {
 108                         fprintf(stderr, "Option \"%s\" is unknown, try \"bridge help\".\n", opt);
 109                         exit(-1);
 110                 }
 111                 argc--; argv++;
 112         }
 113
 114         if (rtnl_open(&rth, 0) < 0)
 115                 exit(1);
 116
 117         if (argc > 1)
 118                 return do_cmd(argv[1], argc-1, argv+1);
 119
 120         rtnl_close(&rth);
 121         usage();
 122 }