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b61a5eea59
This simplifies the code since there's no longer a need to have error handling in the registration. Unfortunately it means more extern function declarations are needed, but the overall goal would seem to justify this. Due to the removal of duplication in the netlink policies, this reduces the size of wimax by almost 1k. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/*
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* Linux WiMAX
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* Implement and export a method for getting a WiMAX device current state
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*
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* Copyright (C) 2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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*
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* Based on previous WiMAX core work by:
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* Copyright (C) 2008 Intel Corporation <linux-wimax@intel.com>
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* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#include <net/wimax.h>
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#include <net/genetlink.h>
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#include <linux/wimax.h>
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#include <linux/security.h>
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#include "wimax-internal.h"
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#define D_SUBMODULE op_state_get
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#include "debug-levels.h"
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/*
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* Exporting to user space over generic netlink
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*
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* Parse the state get command from user space, return a combination
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* value that describe the current state.
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*
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* No attributes.
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*/
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int wimax_gnl_doit_state_get(struct sk_buff *skb, struct genl_info *info)
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{
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int result, ifindex;
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struct wimax_dev *wimax_dev;
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d_fnstart(3, NULL, "(skb %p info %p)\n", skb, info);
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result = -ENODEV;
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if (info->attrs[WIMAX_GNL_STGET_IFIDX] == NULL) {
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printk(KERN_ERR "WIMAX_GNL_OP_STATE_GET: can't find IFIDX "
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"attribute\n");
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goto error_no_wimax_dev;
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}
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ifindex = nla_get_u32(info->attrs[WIMAX_GNL_STGET_IFIDX]);
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wimax_dev = wimax_dev_get_by_genl_info(info, ifindex);
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if (wimax_dev == NULL)
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goto error_no_wimax_dev;
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/* Execute the operation and send the result back to user space */
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result = wimax_state_get(wimax_dev);
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dev_put(wimax_dev->net_dev);
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error_no_wimax_dev:
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d_fnend(3, NULL, "(skb %p info %p) = %d\n", skb, info, result);
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return result;
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}
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