[PATCH] atm sysfs ifindex entry

Vitja Makarov vitja.makarov at gmail.com
Sat Jan 13 15:55:52 EST 2007

Hi, all!

I've found that patch atm_sysfs patch was posted here.
I wanna add atm support to hal, that should be nice for adsl-usb modems.
I found that it's not allways possible to determinate interface index.
So for example idt77252 ends with number so i can read index as
this could be avoided using separator as in /proc driver eg
idt77252:0, or like ethernet add ifindex entry. I guess second way is
better, as type entry exists.


diff -urN orig/net/atm/atm_sysfs.c my/net/atm/atm_sysfs.c
--- orig/net/atm/atm_sysfs.c	2007-01-11 20:39:57.000000000 +0300
+++ my/net/atm/atm_sysfs.c	2007-01-13 23:51:31.188877928 +0300
@@ -1,5 +1,6 @@
 /* ATM driver model support. */

+#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/kobject.h>
@@ -90,11 +91,19 @@
 	return pos - buf;

+static ssize_t show_ifindex(struct class_device *cdev, char *buf)
+	struct atm_dev *adev = to_atm_dev(cdev);
+	return sprintf(buf, "%d\n", adev->number);
 static CLASS_DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
 static CLASS_DEVICE_ATTR(atmaddress, S_IRUGO, show_atmaddress, NULL);
 static CLASS_DEVICE_ATTR(carrier, S_IRUGO, show_carrier, NULL);
 static CLASS_DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
 static CLASS_DEVICE_ATTR(link_rate, S_IRUGO, show_link_rate, NULL);
+static CLASS_DEVICE_ATTR(ifindex, S_IRUGO, show_ifindex, NULL);

 static struct class_device_attribute *atm_attrs[] = {
@@ -102,6 +111,7 @@
+	&class_device_attr_ifindex,

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