target/linux/generic-2.4/patches/224-atm_hotplug.patch

   1 --- a/include/linux/atmdev.h
   2 +++ b/include/linux/atmdev.h
   3 @@ -400,6 +400,7 @@ extern rwlock_t vcc_sklist_lock;
   4  struct atm_dev *atm_dev_register(const char *type,const struct atmdev_ops *ops,
   5      int number,atm_dev_flags_t *flags); /* number == -1: pick first available */
   6  struct atm_dev *atm_dev_lookup(int number);
   7 +void atm_dev_set_link_status(struct atm_dev *dev, int status);
   8  void atm_dev_deregister(struct atm_dev *dev);
   9  void shutdown_atm_dev(struct atm_dev *dev);
  10  void vcc_insert_socket(struct sock *sk);
  11 --- a/net/atm/resources.c
  12 +++ b/net/atm/resources.c
  13 @@ -10,6 +10,7 @@
  14  #include <linux/sonet.h>
  15  #include <linux/kernel.h> /* for barrier */
  16  #include <linux/module.h>
  17 +#include <linux/kmod.h>
  18  #include <linux/bitops.h>
  19  #include <net/sock.h>   /* for struct sock */
  20  #include <asm/segment.h> /* for get_fs_long and put_fs_long */
  21 @@ -70,6 +71,44 @@ struct atm_dev *atm_dev_lookup(int numbe
  22         return dev;
  23  }
  24
  25 +#ifdef CONFIG_HOTPLUG
  26 +static void atm_run_sbin_hotplug(struct atm_dev *dev, char *action)
  27 +{
  28 +       char *argv[3], *envp[5], ifname[12 + IFNAMSIZ], atmname[255], action_str[32];
  29 +       int i;
  30 +
  31 +       sprintf(ifname, "INTERFACE=atm%d", dev->number);
  32 +       sprintf(atmname, "ATMDRIVER=%s", dev->type);
  33 +       sprintf(action_str, "ACTION=%s", action);
  34 +
  35 +       i = 0;
  36 +       argv[i++] = hotplug_path;
  37 +       argv[i++] = "net";
  38 +       argv[i] = 0;
  39 +
  40 +       i = 0;
  41 +       /* minimal command environment */
  42 +       envp [i++] = "HOME=/";
  43 +       envp [i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
  44 +       envp [i++] = ifname;
  45 +       envp [i++] = atmname;
  46 +       envp [i++] = action_str;
  47 +       envp [i] = 0;
  48 +
  49 +       return call_usermodehelper(argv [0], argv, envp);
  50 +}
  51 +#endif
  52 +
  53 +void atm_dev_set_link_status(struct atm_dev *dev, int status)
  54 +{
  55 +#ifdef CONFIG_HOTPLUG
  56 +       if (status)
  57 +               atm_run_sbin_hotplug(dev, "up");
  58 +       else
  59 +               atm_run_sbin_hotplug(dev, "down");
  60 +#endif
  61 +}
  62 +
  63  struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops,
  64                                  int number, atm_dev_flags_t *flags)
  65  {
  66 @@ -123,7 +162,10 @@ struct atm_dev *atm_dev_register(const c
  67                 }
  68         }
  69  #endif
  70 -
  71 +#ifdef CONFIG_HOTPLUG
  72 +       atm_run_sbin_hotplug(dev, "register");
  73 +#endif
  74 +
  75         return dev;
  76  }
  77
  78 @@ -131,6 +173,10 @@ struct atm_dev *atm_dev_register(const c
  79  void atm_dev_deregister(struct atm_dev *dev)
  80  {
  81         unsigned long warning_time;
  82 +
  83 +#ifdef CONFIG_HOTPLUG
  84 +       atm_run_sbin_hotplug(dev, "unregister");
  85 +#endif
  86
  87  #ifdef CONFIG_PROC_FS
  88         if (dev->ops->proc_read)
  89 @@ -399,6 +445,7 @@ done:
  90  }
  91
  92
  93 +EXPORT_SYMBOL(atm_dev_set_link_status);
  94  EXPORT_SYMBOL(atm_dev_register);
  95  EXPORT_SYMBOL(atm_dev_deregister);
  96  EXPORT_SYMBOL(atm_dev_lookup);