[PATCH 2.6.4-rc2] sysfs simple class support for netlink

[Leann Ogasawara <ogasawara@xxxxxxxx>]

Hi All,

Patch adds sysfs simple class support for netlink character device
(Major 36).  Feedback appreciated.  Thanks,

Leann

===== net/netlink/netlink_dev.c 1.19 vs edited =====
--- 1.19/net/netlink/netlink_dev.c      Tue Aug 26 09:25:41 2003
+++ edited/net/netlink/netlink_dev.c    Thu Mar  4 12:42:44 2004
@@ -27,6 +27,7 @@
 #include <linux/init.h>
 #include <linux/devfs_fs_kernel.h>
 #include <linux/smp_lock.h>
+#include <linux/device.h>
 
 #include <asm/bitops.h>
 #include <asm/system.h>
@@ -34,6 +35,7 @@
 
 static long open_map;
 static struct socket *netlink_user[MAX_LINKS];
+static struct class_simple *netlink_class;
 
 /*
  *     Device operations
@@ -229,17 +231,26 @@
                return -EIO;
        }
 
+       netlink_class = class_simple_create(THIS_MODULE, "netlink");
+       if (IS_ERR(netlink_class)) {
+               printk (KERN_ERR "Error creating netlink class.\n");
+               unregister_chrdev(NETLINK_MAJOR, "netlink");
+               return PTR_ERR(netlink_class);
+       }
+
        devfs_mk_dir("netlink");
 
        /*  Someone tell me the official names for the uppercase ones  */
        for (i = 0; i < ARRAY_SIZE(entries); i++) {
                devfs_mk_cdev(MKDEV(NETLINK_MAJOR, entries[i].minor),
                        S_IFCHR|S_IRUSR|S_IWUSR, "netlink/%s", entries[i].name);
+               class_simple_device_add(netlink_class, MKDEV(NETLINK_MAJOR, 
entries[i].minor), NULL, "%s", entries[i].name);
        }
 
        for (i = 0; i < 16; i++) {
                devfs_mk_cdev(MKDEV(NETLINK_MAJOR, i + 16),
                        S_IFCHR|S_IRUSR|S_IWUSR, "netlink/tap%d", i);
+               class_simple_device_add(netlink_class, MKDEV(NETLINK_MAJOR, i + 
16), NULL, "tap%d", i);
        }
 
        return 0;
@@ -249,11 +260,16 @@
 {
        int i;
 
-       for (i = 0; i < ARRAY_SIZE(entries); i++)
+       for (i = 0; i < ARRAY_SIZE(entries); i++) {
                devfs_remove("netlink/%s", entries[i].name);
-       for (i = 0; i < 16; i++)
+               class_simple_device_remove(MKDEV(NETLINK_MAJOR, 
entries[i].minor));
+       }
+       for (i = 0; i < 16; i++) {
                devfs_remove("netlink/tap%d", i);
+               class_simple_device_remove(MKDEV(NETLINK_MAJOR, i + 16));
+       }
        devfs_remove("netlink");
+       class_simple_destroy(netlink_class);
        unregister_chrdev(NETLINK_MAJOR, "netlink");
 }