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[PATCH] fix /sys/class/net/<if>/wireless without dev->get_wireless_stats
dev->get_wireless_stats is deprecated but removing it also removes wireless subdirectory in sysfs. This patch puts it back. akpm: I don't know what's happening here. This might be appropriate as a 2.6.15.x compatibility backport. Waiting to hear from Jeff. Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -16,6 +16,7 @@
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#include <net/sock.h>
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#include <linux/rtnetlink.h>
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#include <linux/wireless.h>
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#include <net/iw_handler.h>
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#define to_class_dev(obj) container_of(obj,struct class_device,kobj)
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#define to_net_dev(class) container_of(class, struct net_device, class_dev)
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@ -294,13 +295,19 @@ static ssize_t wireless_show(struct class_device *cd, char *buf,
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char *))
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{
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struct net_device *dev = to_net_dev(cd);
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const struct iw_statistics *iw;
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const struct iw_statistics *iw = NULL;
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ssize_t ret = -EINVAL;
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read_lock(&dev_base_lock);
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if (dev_isalive(dev) && dev->get_wireless_stats
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&& (iw = dev->get_wireless_stats(dev)) != NULL)
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ret = (*format)(iw, buf);
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if (dev_isalive(dev)) {
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if(dev->wireless_handlers &&
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dev->wireless_handlers->get_wireless_stats)
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iw = dev->wireless_handlers->get_wireless_stats(dev);
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else if (dev->get_wireless_stats)
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iw = dev->get_wireless_stats(dev);
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if (iw != NULL)
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ret = (*format)(iw, buf);
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}
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read_unlock(&dev_base_lock);
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return ret;
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@ -402,7 +409,8 @@ void netdev_unregister_sysfs(struct net_device * net)
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sysfs_remove_group(&class_dev->kobj, &netstat_group);
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#ifdef WIRELESS_EXT
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if (net->get_wireless_stats)
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if (net->get_wireless_stats || (net->wireless_handlers &&
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net->wireless_handlers->get_wireless_stats))
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sysfs_remove_group(&class_dev->kobj, &wireless_group);
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#endif
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class_device_del(class_dev);
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@ -427,10 +435,12 @@ int netdev_register_sysfs(struct net_device *net)
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goto out_unreg;
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#ifdef WIRELESS_EXT
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if (net->get_wireless_stats &&
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(ret = sysfs_create_group(&class_dev->kobj, &wireless_group)))
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goto out_cleanup;
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if (net->get_wireless_stats || (net->wireless_handlers &&
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net->wireless_handlers->get_wireless_stats)) {
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ret = sysfs_create_group(&class_dev->kobj, &wireless_group);
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if (ret)
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goto out_cleanup;
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}
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return 0;
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out_cleanup:
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if (net->get_stats)
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