rdma/rdma.c

   1 /*
   2  * rdma.c       RDMA tool
   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:     Leon Romanovsky <leonro@mellanox.com>
  10  */
  11
  12 #include "rdma.h"
  13 #include "SNAPSHOT.h"
  14
  15 static void help(char *name)
  16 {
  17         pr_out("Usage: %s [ OPTIONS ] OBJECT { COMMAND | help }\n"
  18                "where  OBJECT := { dev | link | help }\n"
  19                "       OPTIONS := { -V[ersion] | -d[etails]}\n", name);
  20 }
  21
  22 static int cmd_help(struct rd *rd)
  23 {
  24         help(rd->filename);
  25         return 0;
  26 }
  27
  28 static int rd_cmd(struct rd *rd)
  29 {
  30         const struct rd_cmd cmds[] = {
  31                 { NULL,         cmd_help },
  32                 { "help",       cmd_help },
  33                 { "dev",        cmd_dev },
  34                 { "link",       cmd_link },
  35                 { 0 }
  36         };
  37
  38         return rd_exec_cmd(rd, cmds, "object");
  39 }
  40
  41 static int rd_init(struct rd *rd, int argc, char **argv, char *filename)
  42 {
  43         uint32_t seq;
  44         int ret;
  45
  46         rd->filename = filename;
  47         rd->argc = argc;
  48         rd->argv = argv;
  49         INIT_LIST_HEAD(&rd->dev_map_list);
  50         rd->buff = malloc(MNL_SOCKET_BUFFER_SIZE);
  51         if (!rd->buff)
  52                 return -ENOMEM;
  53
  54         rd_prepare_msg(rd, RDMA_NLDEV_CMD_GET,
  55                        &seq, (NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP));
  56         ret = rd_send_msg(rd);
  57         if (ret)
  58                 return ret;
  59
  60         return rd_recv_msg(rd, rd_dev_init_cb, rd, seq);
  61 }
  62
  63 static void rd_free(struct rd *rd)
  64 {
  65         free(rd->buff);
  66         rd_free_devmap(rd);
  67 }
  68
  69 int main(int argc, char **argv)
  70 {
  71         static const struct option long_options[] = {
  72                 { "version",            no_argument,            NULL, 'V' },
  73                 { "help",               no_argument,            NULL, 'h' },
  74                 { "details",            no_argument,            NULL, 'd' },
  75                 { NULL, 0, NULL, 0 }
  76         };
  77         bool show_details = false;
  78         char *filename;
  79         struct rd rd;
  80         int opt;
  81         int err;
  82
  83         filename = basename(argv[0]);
  84
  85         while ((opt = getopt_long(argc, argv, "Vhd",
  86                                   long_options, NULL)) >= 0) {
  87                 switch (opt) {
  88                 case 'V':
  89                         printf("%s utility, iproute2-ss%s\n",
  90                                filename, SNAPSHOT);
  91                         return EXIT_SUCCESS;
  92                 case 'd':
  93                         show_details = true;
  94                         break;
  95                 case 'h':
  96                         help(filename);
  97                         return EXIT_SUCCESS;
  98                 default:
  99                         pr_err("Unknown option.\n");
 100                         help(filename);
 101                         return EXIT_FAILURE;
 102                 }
 103         }
 104
 105         argc -= optind;
 106         argv += optind;
 107
 108         err = rd_init(&rd, argc, argv, filename);
 109         if (err)
 110                 goto out;
 111
 112         rd.show_details = show_details;
 113         err = rd_cmd(&rd);
 114 out:
 115         /* Always cleanup */
 116         rd_free(&rd);
 117         return err ? EXIT_FAILURE : EXIT_SUCCESS;
 118 }