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ieee802154: add cfg802154_registered_device list

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This patch adds a new cfg802154_rdev_list to remember all registered
cfg802154_registered_device structs. This is needed to prepare the
upcomming nl802154 framework.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2014-11-09 08:36:48 +01:00 committed by Marcel Holtmann
parent f601379fa1
commit f3ada640c2
2 changed files with 45 additions and 1 deletions
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45
net/ieee802154/core.c
View file

@ -18,11 +18,16 @@
#include <linux/device.h>
#include <net/cfg802154.h>
#include <net/rtnetlink.h>
#include "ieee802154.h"
#include "sysfs.h"
#include "core.h"
/* RCU-protected (and RTNL for writers) */
static LIST_HEAD(cfg802154_rdev_list);
static int cfg802154_rdev_list_generation;
static int wpan_phy_match(struct device *dev, const void *data)
{
return !strcmp(dev_name(dev), (const char *)data);
@ -109,13 +114,51 @@ EXPORT_SYMBOL(wpan_phy_new);
int wpan_phy_register(struct wpan_phy *phy)
{
return device_add(&phy->dev);
struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(phy);
int ret;
rtnl_lock();
ret = device_add(&phy->dev);
if (ret) {
rtnl_unlock();
return ret;
}
list_add_rcu(&rdev->list, &cfg802154_rdev_list);
cfg802154_rdev_list_generation++;
/* TODO phy registered lock */
rtnl_unlock();
/* TODO nl802154 phy notify */
return 0;
}
EXPORT_SYMBOL(wpan_phy_register);
void wpan_phy_unregister(struct wpan_phy *phy)
{
struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(phy);
/* TODO open count */
rtnl_lock();
/* TODO nl802154 phy notify */
/* TODO phy registered lock */
/* TODO WARN_ON wpan_dev_list */
/* First remove the hardware from everywhere, this makes
* it impossible to find from userspace.
*/
list_del_rcu(&rdev->list);
synchronize_rcu();
cfg802154_rdev_list_generation++;
device_del(&phy->dev);
rtnl_unlock();
}
EXPORT_SYMBOL(wpan_phy_unregister);

1
net/ieee802154/core.h
View file

@ -5,6 +5,7 @@
struct cfg802154_registered_device {
const struct cfg802154_ops *ops;
struct list_head list;
/* wpan_phy index, internal only */
int wpan_phy_idx;