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/*
* Marvell Wireless LAN device driver: 802.11h
*
* Copyright (C) 2013, Marvell International Ltd.
*
* This software file (the "File") is distributed by Marvell International
* Ltd. under the terms of the GNU General Public License Version 2, June 1991
* (the "License"). You may use, redistribute and/or modify this File in
* accordance with the terms and conditions of the License, a copy of which
* is available by writing to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
* this warranty disclaimer.
*/
#include "main.h"
#include "fw.h"
/* This function appends 11h info to a buffer while joining an
* infrastructure BSS
*/
static void
mwifiex_11h_process_infra_join(struct mwifiex_private *priv, u8 **buffer,
struct mwifiex_bssdescriptor *bss_desc)
{
struct mwifiex_ie_types_header *ie_header;
struct mwifiex_ie_types_pwr_capability *cap;
struct mwifiex_ie_types_local_pwr_constraint *constraint;
struct ieee80211_supported_band *sband;
u8 radio_type;
int i;
if (!buffer || !(*buffer))
return;
radio_type = mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
sband = priv->wdev->wiphy->bands[radio_type];
cap = (struct mwifiex_ie_types_pwr_capability *)*buffer;
cap->header.type = cpu_to_le16(WLAN_EID_PWR_CAPABILITY);
cap->header.len = cpu_to_le16(2);
cap->min_pwr = 0;
cap->max_pwr = 0;
*buffer += sizeof(*cap);
constraint = (struct mwifiex_ie_types_local_pwr_constraint *)*buffer;
constraint->header.type = cpu_to_le16(WLAN_EID_PWR_CONSTRAINT);
constraint->header.len = cpu_to_le16(2);
constraint->chan = bss_desc->channel;
constraint->constraint = bss_desc->local_constraint;
*buffer += sizeof(*constraint);
ie_header = (struct mwifiex_ie_types_header *)*buffer;
ie_header->type = cpu_to_le16(TLV_TYPE_PASSTHROUGH);
ie_header->len = cpu_to_le16(2 * sband->n_channels + 2);
*buffer += sizeof(*ie_header);
*(*buffer)++ = WLAN_EID_SUPPORTED_CHANNELS;
*(*buffer)++ = 2 * sband->n_channels;
for (i = 0; i < sband->n_channels; i++) {
*(*buffer)++ = ieee80211_frequency_to_channel(
sband->channels[i].center_freq);
*(*buffer)++ = 1; /* one channel in the subband */
}
}
/* Enable or disable the 11h extensions in the firmware */
static int mwifiex_11h_activate(struct mwifiex_private *priv, bool flag)
{
u32 enable = flag;
return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
HostCmd_ACT_GEN_SET, DOT11H_I, &enable);
}
/* This functions processes TLV buffer for a pending BSS Join command.
*
* Activate 11h functionality in the firmware if the spectrum management
* capability bit is found in the network we are joining. Also, necessary
* TLVs are set based on requested network's 11h capability.
*/
void mwifiex_11h_process_join(struct mwifiex_private *priv, u8 **buffer,
struct mwifiex_bssdescriptor *bss_desc)
{
if (bss_desc->sensed_11h) {
/* Activate 11h functions in firmware, turns on capability
* bit
*/
mwifiex_11h_activate(priv, true);
bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_SPECTRUM_MGMT;
mwifiex_11h_process_infra_join(priv, buffer, bss_desc);
} else {
/* Deactivate 11h functions in the firmware */
mwifiex_11h_activate(priv, false);
bss_desc->cap_info_bitmap &= ~WLAN_CAPABILITY_SPECTRUM_MGMT;
}
}
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