mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 00:52:01 +00:00
7f0333eb2f
wimax connection manager / daemon has to know what is current state of the device. Previously it was only possible to get notification whet state has changed. Note: By mistake, the new generic netlink's number for WIMAX_GNL_OP_STATE_GET was declared inserting into the existing list of API calls, not appending; thus, it'd break existing API. Fixed by Inaky Perez-Gonzalez <inaky@linux.intel.com> by moving to the tail, where we add to the interface, not modify the interface. Thanks to Stephen Hemminger <shemminger@vyatta.com> for catching this. Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/*
|
|
* Linux WiMAX
|
|
* Implement and export a method for getting a WiMAX device current state
|
|
*
|
|
* Copyright (C) 2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
|
*
|
|
* Based on previous WiMAX core work by:
|
|
* Copyright (C) 2008 Intel Corporation <linux-wimax@intel.com>
|
|
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA.
|
|
*/
|
|
|
|
#include <net/wimax.h>
|
|
#include <net/genetlink.h>
|
|
#include <linux/wimax.h>
|
|
#include <linux/security.h>
|
|
#include "wimax-internal.h"
|
|
|
|
#define D_SUBMODULE op_state_get
|
|
#include "debug-levels.h"
|
|
|
|
|
|
static const
|
|
struct nla_policy wimax_gnl_state_get_policy[WIMAX_GNL_ATTR_MAX + 1] = {
|
|
[WIMAX_GNL_STGET_IFIDX] = {
|
|
.type = NLA_U32,
|
|
},
|
|
};
|
|
|
|
|
|
/*
|
|
* Exporting to user space over generic netlink
|
|
*
|
|
* Parse the state get command from user space, return a combination
|
|
* value that describe the current state.
|
|
*
|
|
* No attributes.
|
|
*/
|
|
static
|
|
int wimax_gnl_doit_state_get(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
int result, ifindex;
|
|
struct wimax_dev *wimax_dev;
|
|
struct device *dev;
|
|
|
|
d_fnstart(3, NULL, "(skb %p info %p)\n", skb, info);
|
|
result = -ENODEV;
|
|
if (info->attrs[WIMAX_GNL_STGET_IFIDX] == NULL) {
|
|
printk(KERN_ERR "WIMAX_GNL_OP_STATE_GET: can't find IFIDX "
|
|
"attribute\n");
|
|
goto error_no_wimax_dev;
|
|
}
|
|
ifindex = nla_get_u32(info->attrs[WIMAX_GNL_STGET_IFIDX]);
|
|
wimax_dev = wimax_dev_get_by_genl_info(info, ifindex);
|
|
if (wimax_dev == NULL)
|
|
goto error_no_wimax_dev;
|
|
dev = wimax_dev_to_dev(wimax_dev);
|
|
/* Execute the operation and send the result back to user space */
|
|
result = wimax_state_get(wimax_dev);
|
|
dev_put(wimax_dev->net_dev);
|
|
error_no_wimax_dev:
|
|
d_fnend(3, NULL, "(skb %p info %p) = %d\n", skb, info, result);
|
|
return result;
|
|
}
|
|
|
|
|
|
struct genl_ops wimax_gnl_state_get = {
|
|
.cmd = WIMAX_GNL_OP_STATE_GET,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.policy = wimax_gnl_state_get_policy,
|
|
.doit = wimax_gnl_doit_state_get,
|
|
.dumpit = NULL,
|
|
};
|