[PATCH 16/17] " [PATCH] fix /sys/class/net/" <if>/wireless without dev->get_wireless_stats

From: Chris Wright
Date: Thu Jan 12 2006 - 22:20:49 EST


-stable review patch. If anyone has any objections, please let us know.
------------------

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@xxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Jeff Garzik <jgarzik@xxxxxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
---
net/core/net-sysfs.c | 28 +++++++++++++++++++---------
1 file changed, 19 insertions(+), 9 deletions(-)

--- linux-2.6.15.y.orig/net/core/net-sysfs.c
+++ linux-2.6.15.y/net/core/net-sysfs.c
@@ -16,6 +16,7 @@
#include <net/sock.h>
#include <linux/rtnetlink.h>
#include <linux/wireless.h>
+#include <net/iw_handler.h>

#define to_class_dev(obj) container_of(obj,struct class_device,kobj)
#define to_net_dev(class) container_of(class, struct net_device, class_dev)
@@ -313,13 +314,19 @@ static ssize_t wireless_show(struct clas
char *))
{
struct net_device *dev = to_net_dev(cd);
- const struct iw_statistics *iw;
+ const struct iw_statistics *iw = NULL;
ssize_t ret = -EINVAL;

read_lock(&dev_base_lock);
- if (dev_isalive(dev) && dev->get_wireless_stats
- && (iw = dev->get_wireless_stats(dev)) != NULL)
- ret = (*format)(iw, buf);
+ if (dev_isalive(dev)) {
+ if(dev->wireless_handlers &&
+ dev->wireless_handlers->get_wireless_stats)
+ iw = dev->wireless_handlers->get_wireless_stats(dev);
+ else if (dev->get_wireless_stats)
+ iw = dev->get_wireless_stats(dev);
+ if (iw != NULL)
+ ret = (*format)(iw, buf);
+ }
read_unlock(&dev_base_lock);

return ret;
@@ -420,7 +427,8 @@ void netdev_unregister_sysfs(struct net_
sysfs_remove_group(&class_dev->kobj, &netstat_group);

#ifdef WIRELESS_EXT
- if (net->get_wireless_stats)
+ if (net->get_wireless_stats || (net->wireless_handlers &&
+ net->wireless_handlers->get_wireless_stats))
sysfs_remove_group(&class_dev->kobj, &wireless_group);
#endif
class_device_del(class_dev);
@@ -453,10 +461,12 @@ int netdev_register_sysfs(struct net_dev
goto out_unreg;

#ifdef WIRELESS_EXT
- if (net->get_wireless_stats &&
- (ret = sysfs_create_group(&class_dev->kobj, &wireless_group)))
- goto out_cleanup;
-
+ if (net->get_wireless_stats || (net->wireless_handlers &&
+ net->wireless_handlers->get_wireless_stats)) {
+ ret = sysfs_create_group(&class_dev->kobj, &wireless_group);
+ if (ret)
+ goto out_cleanup;
+ }
return 0;
out_cleanup:
if (net->get_stats)

--
-
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