src/core.c

   1 /*
   2  * Lightweight Autonomic Network Architecture
   3  *
   4  * Collector and loader for all core extensions (xt_*).
   5  *
   6  * Copyright 2011 Daniel Borkmann <dborkma@tik.ee.ethz.ch>,
   7  * Swiss federal institute of technology (ETH Zurich)
   8  * Subject to the GPL.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/kernel.h>
  13 #include <linux/proc_fs.h>
  14 #include <net/net_namespace.h>
  15
  16 #include "xt_fblock.h"
  17 #include "xt_vlink.h"
  18 #include "xt_builder.h"
  19 #include "xt_user.h"
  20 #include "xt_engine.h"
  21
  22 struct proc_dir_entry *lana_proc_dir;
  23 EXPORT_SYMBOL(lana_proc_dir);
  24 struct proc_dir_entry *fblock_proc_dir;
  25 EXPORT_SYMBOL(fblock_proc_dir);
  26
  27 static int __init init_lana_core_module(void)
  28 {
  29         int ret;
  30
  31         printk(KERN_INFO "[lana] bootstrapping core ...\n");
  32
  33         lana_proc_dir = proc_mkdir("lana", init_net.proc_net);
  34         if (!lana_proc_dir)
  35                 return -ENOMEM;
  36         fblock_proc_dir = proc_mkdir("fblock", lana_proc_dir);
  37         if (!fblock_proc_dir)
  38                 goto err;
  39         ret = init_vlink_system();
  40         if (ret)
  41                 goto err1;
  42         ret = init_fblock_tables();
  43         if (ret)
  44                 goto err2;
  45         ret = init_fblock_builder();
  46         if (ret)
  47                 goto err3;
  48         ret = init_userctl_system();
  49         if (ret)
  50                 goto err4;
  51         ret = init_engine();
  52         if (ret)
  53                 goto err5;
  54
  55         printk(KERN_INFO "[lana] core up and running!\n");
  56         return 0;
  57 err5:
  58         cleanup_userctl_system();
  59 err4:
  60         cleanup_fblock_builder();
  61 err3:
  62         cleanup_fblock_tables();
  63 err2:
  64         cleanup_vlink_system();
  65 err1:
  66         remove_proc_entry("fblock", lana_proc_dir);
  67 err:
  68         remove_proc_entry("lana", init_net.proc_net);
  69         return -ENOMEM;
  70 }
  71
  72 static void __exit cleanup_lana_core_module(void)
  73 {
  74         printk(KERN_INFO "[lana] halting core ...\n");
  75
  76         cleanup_userctl_system();
  77         cleanup_fblock_tables();
  78         cleanup_fblock_builder();
  79         cleanup_vlink_system();
  80         cleanup_engine();
  81         remove_proc_entry("fblock", lana_proc_dir);
  82         remove_proc_entry("lana", init_net.proc_net);
  83
  84         printk(KERN_INFO "[lana] core shut down!\n");
  85 }
  86
  87 module_init(init_lana_core_module);
  88 module_exit(cleanup_lana_core_module);
  89
  90 MODULE_LICENSE("GPL");
  91 MODULE_AUTHOR("Daniel Borkmann <dborkma@tik.ee.ethz.ch>");
  92 MODULE_DESCRIPTION("LANA core driver");
  93