2009-08-14 20:13:12 +08:00
|
|
|
/*
|
|
|
|
* Copyright (C) 2007, 2008, 2009 Siemens AG
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License version 2
|
|
|
|
* as published by the Free Software Foundation.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
|
|
|
#include <linux/slab.h>
|
2009-08-14 20:13:12 +08:00
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/device.h>
|
|
|
|
|
2014-10-25 15:41:02 +08:00
|
|
|
#include <net/cfg802154.h>
|
2014-11-09 15:36:48 +08:00
|
|
|
#include <net/rtnetlink.h>
|
2009-08-14 20:13:12 +08:00
|
|
|
|
2009-09-10 21:50:12 +08:00
|
|
|
#include "ieee802154.h"
|
2014-11-09 15:36:53 +08:00
|
|
|
#include "nl802154.h"
|
2014-10-29 01:21:32 +08:00
|
|
|
#include "sysfs.h"
|
2014-11-02 11:18:35 +08:00
|
|
|
#include "core.h"
|
2009-08-14 20:13:12 +08:00
|
|
|
|
2014-11-09 15:36:48 +08:00
|
|
|
/* RCU-protected (and RTNL for writers) */
|
2014-11-09 15:36:53 +08:00
|
|
|
LIST_HEAD(cfg802154_rdev_list);
|
2014-11-09 15:36:54 +08:00
|
|
|
int cfg802154_rdev_list_generation;
|
2014-11-09 15:36:48 +08:00
|
|
|
|
2013-02-02 03:40:17 +08:00
|
|
|
static int wpan_phy_match(struct device *dev, const void *data)
|
2009-08-14 20:13:12 +08:00
|
|
|
{
|
|
|
|
return !strcmp(dev_name(dev), (const char *)data);
|
|
|
|
}
|
|
|
|
|
|
|
|
struct wpan_phy *wpan_phy_find(const char *str)
|
|
|
|
{
|
|
|
|
struct device *dev;
|
|
|
|
|
|
|
|
if (WARN_ON(!str))
|
|
|
|
return NULL;
|
|
|
|
|
2013-02-02 03:40:17 +08:00
|
|
|
dev = class_find_device(&wpan_phy_class, NULL, str, wpan_phy_match);
|
2009-08-14 20:13:12 +08:00
|
|
|
if (!dev)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
return container_of(dev, struct wpan_phy, dev);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wpan_phy_find);
|
|
|
|
|
2009-09-15 20:57:04 +08:00
|
|
|
struct wpan_phy_iter_data {
|
|
|
|
int (*fn)(struct wpan_phy *phy, void *data);
|
|
|
|
void *data;
|
|
|
|
};
|
|
|
|
|
|
|
|
static int wpan_phy_iter(struct device *dev, void *_data)
|
|
|
|
{
|
|
|
|
struct wpan_phy_iter_data *wpid = _data;
|
|
|
|
struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev);
|
2014-07-02 11:31:09 +08:00
|
|
|
|
2009-09-15 20:57:04 +08:00
|
|
|
return wpid->fn(phy, wpid->data);
|
|
|
|
}
|
|
|
|
|
|
|
|
int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data),
|
2014-07-02 11:31:09 +08:00
|
|
|
void *data)
|
2009-09-15 20:57:04 +08:00
|
|
|
{
|
|
|
|
struct wpan_phy_iter_data wpid = {
|
|
|
|
.fn = fn,
|
|
|
|
.data = data,
|
|
|
|
};
|
|
|
|
|
|
|
|
return class_for_each_device(&wpan_phy_class, NULL,
|
|
|
|
&wpid, wpan_phy_iter);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wpan_phy_for_each);
|
|
|
|
|
2014-11-09 15:36:53 +08:00
|
|
|
struct cfg802154_registered_device *
|
|
|
|
cfg802154_rdev_by_wpan_phy_idx(int wpan_phy_idx)
|
|
|
|
{
|
|
|
|
struct cfg802154_registered_device *result = NULL, *rdev;
|
|
|
|
|
|
|
|
ASSERT_RTNL();
|
|
|
|
|
|
|
|
list_for_each_entry(rdev, &cfg802154_rdev_list, list) {
|
|
|
|
if (rdev->wpan_phy_idx == wpan_phy_idx) {
|
|
|
|
result = rdev;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2014-11-02 11:18:35 +08:00
|
|
|
struct wpan_phy *
|
2014-11-09 15:36:47 +08:00
|
|
|
wpan_phy_new(const struct cfg802154_ops *ops, size_t priv_size)
|
2009-08-14 20:13:12 +08:00
|
|
|
{
|
2014-11-06 03:51:12 +08:00
|
|
|
static atomic_t wpan_phy_counter = ATOMIC_INIT(0);
|
2014-11-02 11:18:35 +08:00
|
|
|
struct cfg802154_registered_device *rdev;
|
|
|
|
size_t alloc_size;
|
|
|
|
|
|
|
|
alloc_size = sizeof(*rdev) + priv_size;
|
|
|
|
rdev = kzalloc(alloc_size, GFP_KERNEL);
|
|
|
|
if (!rdev)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
rdev->ops = ops;
|
2009-08-14 20:13:12 +08:00
|
|
|
|
2014-11-06 03:51:12 +08:00
|
|
|
rdev->wpan_phy_idx = atomic_inc_return(&wpan_phy_counter);
|
|
|
|
|
|
|
|
if (unlikely(rdev->wpan_phy_idx < 0)) {
|
|
|
|
/* ugh, wrapped! */
|
|
|
|
atomic_dec(&wpan_phy_counter);
|
2014-11-02 11:18:35 +08:00
|
|
|
kfree(rdev);
|
2014-11-06 03:51:12 +08:00
|
|
|
return NULL;
|
2009-08-14 20:13:12 +08:00
|
|
|
}
|
2014-11-06 03:51:12 +08:00
|
|
|
|
|
|
|
/* atomic_inc_return makes it start at 1, make it start at 0 */
|
|
|
|
rdev->wpan_phy_idx--;
|
2009-08-14 20:13:12 +08:00
|
|
|
|
2014-11-02 11:18:35 +08:00
|
|
|
mutex_init(&rdev->wpan_phy.pib_lock);
|
2009-08-14 20:13:12 +08:00
|
|
|
|
2014-11-09 15:36:50 +08:00
|
|
|
INIT_LIST_HEAD(&rdev->wpan_dev_list);
|
2014-11-02 11:18:35 +08:00
|
|
|
device_initialize(&rdev->wpan_phy.dev);
|
2014-11-06 03:51:12 +08:00
|
|
|
dev_set_name(&rdev->wpan_phy.dev, "wpan-phy%d", rdev->wpan_phy_idx);
|
2009-08-14 20:13:12 +08:00
|
|
|
|
2014-11-02 11:18:35 +08:00
|
|
|
rdev->wpan_phy.dev.class = &wpan_phy_class;
|
|
|
|
rdev->wpan_phy.dev.platform_data = rdev;
|
2009-08-14 20:13:12 +08:00
|
|
|
|
2014-11-09 15:36:50 +08:00
|
|
|
init_waitqueue_head(&rdev->dev_wait);
|
|
|
|
|
2014-11-02 11:18:35 +08:00
|
|
|
return &rdev->wpan_phy;
|
2009-08-14 20:13:12 +08:00
|
|
|
}
|
2014-11-09 15:36:47 +08:00
|
|
|
EXPORT_SYMBOL(wpan_phy_new);
|
2009-08-14 20:13:12 +08:00
|
|
|
|
2009-09-28 23:01:20 +08:00
|
|
|
int wpan_phy_register(struct wpan_phy *phy)
|
2009-08-14 20:13:12 +08:00
|
|
|
{
|
2014-11-09 15:36:48 +08:00
|
|
|
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;
|
2009-08-14 20:13:12 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wpan_phy_register);
|
|
|
|
|
|
|
|
void wpan_phy_unregister(struct wpan_phy *phy)
|
|
|
|
{
|
2014-11-09 15:36:48 +08:00
|
|
|
struct cfg802154_registered_device *rdev = wpan_phy_to_rdev(phy);
|
|
|
|
|
2014-11-09 15:36:50 +08:00
|
|
|
wait_event(rdev->dev_wait, ({
|
|
|
|
int __count;
|
|
|
|
rtnl_lock();
|
|
|
|
__count = rdev->opencount;
|
|
|
|
rtnl_unlock();
|
|
|
|
__count == 0; }));
|
2014-11-09 15:36:48 +08:00
|
|
|
|
|
|
|
rtnl_lock();
|
|
|
|
/* TODO nl802154 phy notify */
|
|
|
|
/* TODO phy registered lock */
|
|
|
|
|
2014-11-09 15:36:50 +08:00
|
|
|
WARN_ON(!list_empty(&rdev->wpan_dev_list));
|
2014-11-09 15:36:48 +08:00
|
|
|
|
|
|
|
/* 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++;
|
|
|
|
|
2009-08-14 20:13:12 +08:00
|
|
|
device_del(&phy->dev);
|
2014-11-09 15:36:48 +08:00
|
|
|
|
|
|
|
rtnl_unlock();
|
2009-08-14 20:13:12 +08:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wpan_phy_unregister);
|
|
|
|
|
|
|
|
void wpan_phy_free(struct wpan_phy *phy)
|
|
|
|
{
|
|
|
|
put_device(&phy->dev);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(wpan_phy_free);
|
|
|
|
|
2014-11-02 11:18:35 +08:00
|
|
|
void cfg802154_dev_free(struct cfg802154_registered_device *rdev)
|
|
|
|
{
|
|
|
|
kfree(rdev);
|
|
|
|
}
|
|
|
|
|
2014-11-09 15:36:50 +08:00
|
|
|
static void
|
|
|
|
cfg802154_update_iface_num(struct cfg802154_registered_device *rdev,
|
|
|
|
int iftype, int num)
|
|
|
|
{
|
|
|
|
ASSERT_RTNL();
|
|
|
|
|
|
|
|
rdev->num_running_ifaces += num;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int cfg802154_netdev_notifier_call(struct notifier_block *nb,
|
|
|
|
unsigned long state, void *ptr)
|
|
|
|
{
|
|
|
|
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
|
|
|
|
struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
|
|
|
|
struct cfg802154_registered_device *rdev;
|
|
|
|
|
|
|
|
if (!wpan_dev)
|
|
|
|
return NOTIFY_DONE;
|
|
|
|
|
|
|
|
rdev = wpan_phy_to_rdev(wpan_dev->wpan_phy);
|
|
|
|
|
|
|
|
/* TODO WARN_ON unspec type */
|
|
|
|
|
|
|
|
switch (state) {
|
|
|
|
/* TODO NETDEV_DEVTYPE */
|
|
|
|
case NETDEV_REGISTER:
|
|
|
|
wpan_dev->identifier = ++rdev->wpan_dev_id;
|
|
|
|
list_add_rcu(&wpan_dev->list, &rdev->wpan_dev_list);
|
|
|
|
rdev->devlist_generation++;
|
|
|
|
|
|
|
|
wpan_dev->netdev = dev;
|
|
|
|
break;
|
|
|
|
case NETDEV_DOWN:
|
|
|
|
cfg802154_update_iface_num(rdev, wpan_dev->iftype, -1);
|
|
|
|
|
|
|
|
rdev->opencount--;
|
|
|
|
wake_up(&rdev->dev_wait);
|
|
|
|
break;
|
|
|
|
case NETDEV_UP:
|
|
|
|
cfg802154_update_iface_num(rdev, wpan_dev->iftype, 1);
|
|
|
|
|
|
|
|
rdev->opencount++;
|
|
|
|
break;
|
|
|
|
case NETDEV_UNREGISTER:
|
|
|
|
/* It is possible to get NETDEV_UNREGISTER
|
|
|
|
* multiple times. To detect that, check
|
|
|
|
* that the interface is still on the list
|
|
|
|
* of registered interfaces, and only then
|
|
|
|
* remove and clean it up.
|
|
|
|
*/
|
|
|
|
if (!list_empty(&wpan_dev->list)) {
|
|
|
|
list_del_rcu(&wpan_dev->list);
|
|
|
|
rdev->devlist_generation++;
|
|
|
|
}
|
|
|
|
/* synchronize (so that we won't find this netdev
|
|
|
|
* from other code any more) and then clear the list
|
|
|
|
* head so that the above code can safely check for
|
|
|
|
* !list_empty() to avoid double-cleanup.
|
|
|
|
*/
|
|
|
|
synchronize_rcu();
|
|
|
|
INIT_LIST_HEAD(&wpan_dev->list);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return NOTIFY_DONE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return NOTIFY_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct notifier_block cfg802154_netdev_notifier = {
|
|
|
|
.notifier_call = cfg802154_netdev_notifier_call,
|
|
|
|
};
|
|
|
|
|
2009-08-14 20:13:12 +08:00
|
|
|
static int __init wpan_phy_class_init(void)
|
|
|
|
{
|
2009-09-10 21:50:12 +08:00
|
|
|
int rc;
|
2014-07-02 11:31:09 +08:00
|
|
|
|
2014-10-29 01:21:32 +08:00
|
|
|
rc = wpan_phy_sysfs_init();
|
2009-09-10 21:50:12 +08:00
|
|
|
if (rc)
|
|
|
|
goto err;
|
|
|
|
|
2014-11-09 15:36:50 +08:00
|
|
|
rc = register_netdevice_notifier(&cfg802154_netdev_notifier);
|
2009-09-10 21:50:12 +08:00
|
|
|
if (rc)
|
|
|
|
goto err_nl;
|
|
|
|
|
2014-11-09 15:36:50 +08:00
|
|
|
rc = ieee802154_nl_init();
|
|
|
|
if (rc)
|
|
|
|
goto err_notifier;
|
|
|
|
|
2014-11-09 15:36:53 +08:00
|
|
|
rc = nl802154_init();
|
|
|
|
if (rc)
|
|
|
|
goto err_ieee802154_nl;
|
|
|
|
|
2009-09-10 21:50:12 +08:00
|
|
|
return 0;
|
2014-11-09 15:36:50 +08:00
|
|
|
|
2014-11-09 15:36:53 +08:00
|
|
|
err_ieee802154_nl:
|
|
|
|
ieee802154_nl_exit();
|
|
|
|
|
2014-11-09 15:36:50 +08:00
|
|
|
err_notifier:
|
|
|
|
unregister_netdevice_notifier(&cfg802154_netdev_notifier);
|
2009-09-10 21:50:12 +08:00
|
|
|
err_nl:
|
2014-10-29 01:21:32 +08:00
|
|
|
wpan_phy_sysfs_exit();
|
2009-09-10 21:50:12 +08:00
|
|
|
err:
|
|
|
|
return rc;
|
2009-08-14 20:13:12 +08:00
|
|
|
}
|
2009-11-13 04:58:23 +08:00
|
|
|
subsys_initcall(wpan_phy_class_init);
|
2009-08-14 20:13:12 +08:00
|
|
|
|
|
|
|
static void __exit wpan_phy_class_exit(void)
|
|
|
|
{
|
2014-11-09 15:36:53 +08:00
|
|
|
nl802154_exit();
|
2009-09-10 21:50:12 +08:00
|
|
|
ieee802154_nl_exit();
|
2014-11-09 15:36:50 +08:00
|
|
|
unregister_netdevice_notifier(&cfg802154_netdev_notifier);
|
2014-10-29 01:21:32 +08:00
|
|
|
wpan_phy_sysfs_exit();
|
2009-08-14 20:13:12 +08:00
|
|
|
}
|
|
|
|
module_exit(wpan_phy_class_exit);
|
|
|
|
|
|
|
|
MODULE_LICENSE("GPL v2");
|
2009-09-10 21:50:12 +08:00
|
|
|
MODULE_DESCRIPTION("IEEE 802.15.4 configuration interface");
|
|
|
|
MODULE_AUTHOR("Dmitry Eremin-Solenikov");
|
2009-08-14 20:13:12 +08:00
|
|
|
|