130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 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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#define CNSS_MAX_CH_NUM 45
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#include <linux/module.h>
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#include <linux/slab.h>
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static DEFINE_MUTEX(unsafe_channel_list_lock);
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static DEFINE_MUTEX(dfs_nol_info_lock);
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static struct cnss_unsafe_channel_list {
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u16 unsafe_ch_count;
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u16 unsafe_ch_list[CNSS_MAX_CH_NUM];
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} unsafe_channel_list;
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static struct cnss_dfs_nol_info {
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void *dfs_nol_info;
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u16 dfs_nol_info_len;
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} dfs_nol_info;
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int cnss_set_wlan_unsafe_channel(u16 *unsafe_ch_list, u16 ch_count)
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{
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mutex_lock(&unsafe_channel_list_lock);
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if (!unsafe_ch_list || ch_count > CNSS_MAX_CH_NUM) {
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mutex_unlock(&unsafe_channel_list_lock);
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return -EINVAL;
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}
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unsafe_channel_list.unsafe_ch_count = ch_count;
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if (ch_count != 0) {
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memcpy((char *)unsafe_channel_list.unsafe_ch_list,
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(char *)unsafe_ch_list, ch_count * sizeof(u16));
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}
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mutex_unlock(&unsafe_channel_list_lock);
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return 0;
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}
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EXPORT_SYMBOL(cnss_set_wlan_unsafe_channel);
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int cnss_get_wlan_unsafe_channel(u16 *unsafe_ch_list,
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u16 *ch_count, u16 buf_len)
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{
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mutex_lock(&unsafe_channel_list_lock);
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if (!unsafe_ch_list || !ch_count) {
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mutex_unlock(&unsafe_channel_list_lock);
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return -EINVAL;
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}
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if (buf_len < (unsafe_channel_list.unsafe_ch_count * sizeof(u16))) {
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mutex_unlock(&unsafe_channel_list_lock);
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return -ENOMEM;
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}
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*ch_count = unsafe_channel_list.unsafe_ch_count;
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memcpy((char *)unsafe_ch_list,
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(char *)unsafe_channel_list.unsafe_ch_list,
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unsafe_channel_list.unsafe_ch_count * sizeof(u16));
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mutex_unlock(&unsafe_channel_list_lock);
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return 0;
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}
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EXPORT_SYMBOL(cnss_get_wlan_unsafe_channel);
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int cnss_wlan_set_dfs_nol(const void *info, u16 info_len)
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{
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void *temp;
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struct cnss_dfs_nol_info *dfs_info;
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mutex_lock(&dfs_nol_info_lock);
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if (!info || !info_len) {
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mutex_unlock(&dfs_nol_info_lock);
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return -EINVAL;
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}
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temp = kmalloc(info_len, GFP_KERNEL);
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if (!temp) {
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mutex_unlock(&dfs_nol_info_lock);
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return -ENOMEM;
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}
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memcpy(temp, info, info_len);
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dfs_info = &dfs_nol_info;
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kfree(dfs_info->dfs_nol_info);
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dfs_info->dfs_nol_info = temp;
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dfs_info->dfs_nol_info_len = info_len;
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mutex_unlock(&dfs_nol_info_lock);
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return 0;
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}
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EXPORT_SYMBOL(cnss_wlan_set_dfs_nol);
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int cnss_wlan_get_dfs_nol(void *info, u16 info_len)
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{
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int len;
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struct cnss_dfs_nol_info *dfs_info;
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mutex_lock(&dfs_nol_info_lock);
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if (!info || !info_len) {
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mutex_unlock(&dfs_nol_info_lock);
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return -EINVAL;
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}
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dfs_info = &dfs_nol_info;
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if (!dfs_info->dfs_nol_info || dfs_info->dfs_nol_info_len == 0) {
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mutex_unlock(&dfs_nol_info_lock);
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return -ENOENT;
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}
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len = min(info_len, dfs_info->dfs_nol_info_len);
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memcpy(info, dfs_info->dfs_nol_info, len);
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mutex_unlock(&dfs_nol_info_lock);
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return len;
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}
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EXPORT_SYMBOL(cnss_wlan_get_dfs_nol);
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