/* * 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, };