source: freewrt/target/linux/generic-2.4/patches/224-atm_hotplug.patch@ a3abab6

include/linux/atmdev.h

@@ -408 +408 @@
 struct atm_dev *atm_dev_register(const char *type,const struct atmdev_ops *ops,
     int number,atm_dev_flags_t *flags); /* number == -1: pick first available */
 struct atm_dev *atm_dev_lookup(int number);
+void atm_dev_set_link_status(struct atm_dev *dev, int status);
 void atm_dev_deregister(struct atm_dev *dev);
 void shutdown_atm_dev(struct atm_dev *dev);
 void vcc_insert_socket(struct sock *sk);

net/atm/resources.c

@@ -10 +10 @@
 #include <linux/sonet.h>
 #include <linux/kernel.h> /* for barrier */
 #include <linux/module.h>
+#include <linux/kmod.h>
 #include <linux/bitops.h>
 #include <net/sock.h>    /* for struct sock */
 #include <asm/segment.h> /* for get_fs_long and put_fs_long */
@@ -70 +71 @@
         return dev;
 }
 
+#ifdef CONFIG_HOTPLUG
+static void atm_run_sbin_hotplug(struct atm_dev *dev, char *action)
+{
+        char *argv[3], *envp[5], ifname[12 + IFNAMSIZ], atmname[255], action_str[32];
+        int i;
+
+        sprintf(ifname, "INTERFACE=atm%d", dev->number);
+        sprintf(atmname, "ATMDRIVER=%s", dev->type);
+        sprintf(action_str, "ACTION=%s", action);
+
+        i = 0;
+        argv[i++] = hotplug_path;
+        argv[i++] = "net";
+        argv[i] = 0;
+
+        i = 0;
+        /* minimal command environment */
+        envp [i++] = "HOME=/";
+        envp [i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
+        envp [i++] = ifname;
+        envp [i++] = atmname;
+        envp [i++] = action_str;
+        envp [i] = 0;
+
+        return call_usermodehelper(argv [0], argv, envp);
+}
+#endif
+
+void atm_dev_set_link_status(struct atm_dev *dev, int status)
+{
+#ifdef CONFIG_HOTPLUG
+        if (status)
+                atm_run_sbin_hotplug(dev, "up");
+        else
+                atm_run_sbin_hotplug(dev, "down");
+#endif
+}
+
 struct atm_dev *atm_dev_register(const char *type, const struct atmdev_ops *ops,
                                  int number, atm_dev_flags_t *flags)
 {
@@ -123 +162 @@
                 }
         }
 #endif
-
+#ifdef CONFIG_HOTPLUG
+        atm_run_sbin_hotplug(dev, "register");
+#endif
+        
         return dev;
 }
 
@@ -131 +173 @@
 void atm_dev_deregister(struct atm_dev *dev)
 {
         unsigned long warning_time;
+        
+#ifdef CONFIG_HOTPLUG
+        atm_run_sbin_hotplug(dev, "unregister");
+#endif
 
 #ifdef CONFIG_PROC_FS
         if (dev->ops->proc_read)
@@ -399 +445 @@
 }
 
 
+EXPORT_SYMBOL(atm_dev_set_link_status);
 EXPORT_SYMBOL(atm_dev_register);
 EXPORT_SYMBOL(atm_dev_deregister);
 EXPORT_SYMBOL(atm_dev_lookup);