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PL286/hardware/qcom/wlan/qcwcn/wifi_hal/tdls.cpp

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/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "sync.h"
#define LOG_TAG "WifiHAL"
#include <utils/Log.h>
#include "wifi_hal.h"
#include "common.h"
#include "cpp_bindings.h"
#include "tdlsCommand.h"
#include "vendor_definitions.h"
/* Singleton Static Instance */
TdlsCommand* TdlsCommand::mTdlsCommandInstance = NULL;
TdlsCommand::TdlsCommand(wifi_handle handle, int id, u32 vendor_id, u32 subcmd)
: WifiVendorCommand(handle, id, vendor_id, subcmd)
{
memset(&mHandler, 0, sizeof(mHandler));
memset(&mTDLSgetStatusRspParams, 0, sizeof(wifi_tdls_status));
mRequestId = 0;
}
TdlsCommand::~TdlsCommand()
{
mTdlsCommandInstance = NULL;
unregisterVendorHandler(mVendor_id, mSubcmd);
}
TdlsCommand* TdlsCommand::instance(wifi_handle handle)
{
if (handle == NULL) {
ALOGE("Interface Handle is invalid");
return NULL;
}
if (mTdlsCommandInstance == NULL) {
mTdlsCommandInstance = new TdlsCommand(handle, 0,
OUI_QCA,
QCA_NL80211_VENDOR_SUBCMD_TDLS_ENABLE);
ALOGV("TdlsCommand %p created", mTdlsCommandInstance);
return mTdlsCommandInstance;
}
else
{
if (handle != getWifiHandle(mTdlsCommandInstance->mInfo))
{
/* upper layer must have cleaned up the handle and reinitialized,
so we need to update the same */
ALOGV("Handle different, update the handle");
mTdlsCommandInstance->mInfo = (hal_info *)handle;
}
}
ALOGV("TdlsCommand %p created already", mTdlsCommandInstance);
return mTdlsCommandInstance;
}
void TdlsCommand::setSubCmd(u32 subcmd)
{
mSubcmd = subcmd;
}
/* This function will be the main handler for incoming event SUBCMD_TDLS
* Call the appropriate callback handler after parsing the vendor data.
*/
int TdlsCommand::handleEvent(WifiEvent &event)
{
ALOGV("Got a TDLS message from Driver");
WifiVendorCommand::handleEvent(event);
/* Parse the vendordata and get the attribute */
switch(mSubcmd)
{
case QCA_NL80211_VENDOR_SUBCMD_TDLS_STATE:
{
struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_STATE_MAX
+ 1];
mac_addr addr;
wifi_tdls_status status;
memset(&addr, 0, sizeof(mac_addr));
memset(&status, 0, sizeof(wifi_tdls_status));
nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_TDLS_STATE_MAX,
(struct nlattr *)mVendorData,
mDataLen, NULL);
ALOGV("QCA_NL80211_VENDOR_SUBCMD_TDLS_STATE Received");
if (!tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_MAC_ADDR])
{
ALOGE("%s: QCA_WLAN_VENDOR_ATTR_TDLS_MAC_ADDR not found",
__FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
memcpy(addr,
(u8 *)nla_data(tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_MAC_ADDR]),
nla_len(tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_MAC_ADDR]));
ALOGV(MAC_ADDR_STR, MAC_ADDR_ARRAY(addr));
if (!tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_STATE])
{
ALOGE("%s: QCA_WLAN_VENDOR_ATTR_TDLS_STATE not found",
__FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
status.state = (wifi_tdls_state)
get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_STATE]);
ALOGV("TDLS: State New : %d ", status.state);
if (!tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_REASON])
{
ALOGE("%s: QCA_WLAN_VENDOR_ATTR_TDLS_REASON not found",
__FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
status.reason = (wifi_tdls_reason)
get_s32(tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_REASON]);
ALOGV("TDLS: Reason : %d ", status.reason);
if (!tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_CHANNEL])
{
ALOGE("%s: QCA_WLAN_VENDOR_ATTR_TDLS_CHANNEL not found",
__FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
status.channel =
get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_CHANNEL]);
ALOGV("TDLS: channel : %d ", status.channel);
if (!tb_vendor[
QCA_WLAN_VENDOR_ATTR_TDLS_GLOBAL_OPERATING_CLASS])
{
ALOGE("%s: QCA_WLAN_VENDOR_ATTR_TDLS_GLOBAL_OPERATING_CLASS"
" not found", __FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
status.global_operating_class = get_u32(
tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_GLOBAL_OPERATING_CLASS]);
ALOGV("TDLS: global_operating_class: %d ",
status.global_operating_class);
if (mHandler.on_tdls_state_changed)
(*mHandler.on_tdls_state_changed)(addr, status);
else
ALOGE("TDLS: No Callback registered: ");
}
break;
default:
/* Error case should not happen print log */
ALOGE("%s: Wrong TDLS subcmd received %d", __FUNCTION__, mSubcmd);
}
return NL_SKIP;
}
int TdlsCommand::handleResponse(WifiEvent &reply)
{
WifiVendorCommand::handleResponse(reply);
switch(mSubcmd)
{
case QCA_NL80211_VENDOR_SUBCMD_TDLS_GET_STATUS:
{
struct nlattr *tb_vendor[
QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_MAX + 1];
nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_MAX,
(struct nlattr *)mVendorData,
mDataLen, NULL);
ALOGV("QCA_NL80211_VENDOR_SUBCMD_TDLS_GET_STATUS Received");
memset(&mTDLSgetStatusRspParams, 0, sizeof(wifi_tdls_status));
if (!tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_STATE])
{
ALOGE("%s: QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_STATE"
" not found", __FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
mTDLSgetStatusRspParams.state = (wifi_tdls_state)get_u32(
tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_STATE]);
ALOGV("TDLS: State : %u ", mTDLSgetStatusRspParams.state);
if (!tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_REASON])
{
ALOGE("%s: QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_REASON"
" not found", __FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
mTDLSgetStatusRspParams.reason = (wifi_tdls_reason)get_s32(
tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_REASON]);
ALOGV("TDLS: Reason : %d ", mTDLSgetStatusRspParams.reason);
if (!tb_vendor[QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_CHANNEL])
{
ALOGE("%s: QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_CHANNEL"
" not found", __FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
mTDLSgetStatusRspParams.channel = get_u32(tb_vendor[
QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_CHANNEL]);
ALOGV("TDLS: channel : %d ", mTDLSgetStatusRspParams.channel);
if (!tb_vendor[
QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_GLOBAL_OPERATING_CLASS])
{
ALOGE("%s:"
"QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_GLOBAL_OPERATING_CLASS"
" not found", __FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
mTDLSgetStatusRspParams.global_operating_class =
get_u32(tb_vendor[
QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_GLOBAL_OPERATING_CLASS]);
ALOGV("TDLS: global_operating_class: %d ",
mTDLSgetStatusRspParams.global_operating_class);
}
break;
case QCA_NL80211_VENDOR_SUBCMD_TDLS_GET_CAPABILITIES:
{
struct nlattr *tb_vendor[
QCA_WLAN_VENDOR_ATTR_TDLS_GET_CAPS_MAX + 1];
nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_TDLS_GET_CAPS_MAX,
(struct nlattr *)mVendorData,
mDataLen, NULL);
memset(&mTDLSgetCaps, 0, sizeof(wifiTdlsCapabilities));
if (!tb_vendor[
QCA_WLAN_VENDOR_ATTR_TDLS_GET_CAPS_MAX_CONC_SESSIONS]
)
{
ALOGE("%s: QCA_WLAN_VENDOR_ATTR_TDLS_GET_CAPS_"
"MAX_CONC_SESSIONS not found", __FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
mTDLSgetCaps.maxConcurrentTdlsSessionNum = get_u32(tb_vendor[
QCA_WLAN_VENDOR_ATTR_TDLS_GET_CAPS_MAX_CONC_SESSIONS]);
if (!tb_vendor[
QCA_WLAN_VENDOR_ATTR_TDLS_GET_CAPS_FEATURES_SUPPORTED])
{
ALOGE("%s: QCA_WLAN_VENDOR_ATTR_TDLS_GET_CAPS_"
"FEATURES_SUPPORTED not found", __FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
mTDLSgetCaps.tdlsSupportedFeatures = get_u32(tb_vendor[
QCA_WLAN_VENDOR_ATTR_TDLS_GET_CAPS_FEATURES_SUPPORTED]);
}
break;
default :
ALOGE("%s: Wrong TDLS subcmd response received %d",
__FUNCTION__, mSubcmd);
}
return NL_SKIP;
}
int TdlsCommand::setCallbackHandler(wifi_tdls_handler nHandler, u32 event)
{
int res = 0;
mHandler = nHandler;
res = registerVendorHandler(mVendor_id, event);
if (res != 0) {
/* Error case should not happen print log */
ALOGE("%s: Unable to register Vendor Handler Vendor Id=0x%x subcmd=%u",
__FUNCTION__, mVendor_id, mSubcmd);
}
return res;
}
void TdlsCommand::unregisterHandler(u32 subCmd)
{
unregisterVendorHandler(mVendor_id, subCmd);
}
void TdlsCommand::getStatusRspParams(wifi_tdls_status *status)
{
status->channel = mTDLSgetStatusRspParams.channel;
status->global_operating_class =
mTDLSgetStatusRspParams.global_operating_class;
status->state = mTDLSgetStatusRspParams.state;
status->reason = mTDLSgetStatusRspParams.reason;
}
int TdlsCommand::requestResponse()
{
return WifiCommand::requestResponse(mMsg);
}
void TdlsCommand::getCapsRspParams(wifi_tdls_capabilities *caps)
{
caps->max_concurrent_tdls_session_num =
mTDLSgetCaps.maxConcurrentTdlsSessionNum;
caps->is_global_tdls_supported =
!!(mTDLSgetCaps.tdlsSupportedFeatures & IS_GLOBAL_TDLS_SUPPORTED);
caps->is_per_mac_tdls_supported =
!!(mTDLSgetCaps.tdlsSupportedFeatures & IS_PER_MAC_TDLS_SUPPORTED);
caps->is_off_channel_tdls_supported =
!!(mTDLSgetCaps.tdlsSupportedFeatures & IS_OFF_CHANNEL_TDLS_SUPPORTED);
ALOGV("TDLS capabilities:");
ALOGV("max_concurrent_tdls_session_numChannel : %d\n",
caps->max_concurrent_tdls_session_num);
ALOGV("is_global_tdls_supported : %d\n",
caps->is_global_tdls_supported);
ALOGV("is_per_mac_tdls_supported : %d\n",
caps->is_per_mac_tdls_supported);
ALOGV("is_off_channel_tdls_supported : %d \n",
caps->is_off_channel_tdls_supported);
}
/* wifi_enable_tdls - enables TDLS-auto mode for a specific route
*
* params specifies hints, which provide more information about
* why TDLS is being sought. The firmware should do its best to
* honor the hints before downgrading regular AP link
*
* On successful completion, must fire on_tdls_state_changed event
* to indicate the status of TDLS operation.
*/
wifi_error wifi_enable_tdls(wifi_interface_handle iface,
mac_addr addr,
wifi_tdls_params *params,
wifi_tdls_handler handler)
{
int ret = 0;
TdlsCommand *pTdlsCommand;
struct nlattr *nl_data;
interface_info *iinfo = getIfaceInfo(iface);
wifi_handle handle = getWifiHandle(iface);
pTdlsCommand = TdlsCommand::instance(handle);
if (pTdlsCommand == NULL) {
ALOGE("%s: Error TdlsCommand NULL", __FUNCTION__);
return WIFI_ERROR_UNKNOWN;
}
pTdlsCommand->setSubCmd(QCA_NL80211_VENDOR_SUBCMD_TDLS_ENABLE);
/* Create the message */
ret = pTdlsCommand->create();
if (ret < 0)
goto cleanup;
ret = pTdlsCommand->set_iface_id(iinfo->name);
if (ret < 0)
goto cleanup;
/* Add the attributes */
nl_data = pTdlsCommand->attr_start(NL80211_ATTR_VENDOR_DATA);
if (!nl_data)
goto cleanup;
ALOGV("%s: MAC_ADDR: " MAC_ADDR_STR, __FUNCTION__, MAC_ADDR_ARRAY(addr));
ret = pTdlsCommand->put_bytes(QCA_WLAN_VENDOR_ATTR_TDLS_ENABLE_MAC_ADDR,
(char *)addr, 6);
if (ret < 0)
goto cleanup;
if (params != NULL) {
ALOGV("%s: Channel: %d, Global operating class: %d, "
"Max Latency: %dms, Min Bandwidth: %dKbps",
__FUNCTION__, params->channel, params->global_operating_class,
params->max_latency_ms, params->min_bandwidth_kbps);
ret = pTdlsCommand->put_u32(
QCA_WLAN_VENDOR_ATTR_TDLS_ENABLE_CHANNEL,
params->channel) |
pTdlsCommand->put_u32(
QCA_WLAN_VENDOR_ATTR_TDLS_ENABLE_GLOBAL_OPERATING_CLASS,
params->global_operating_class) |
pTdlsCommand->put_u32(
QCA_WLAN_VENDOR_ATTR_TDLS_ENABLE_MAX_LATENCY_MS,
params->max_latency_ms) |
pTdlsCommand->put_u32(
QCA_WLAN_VENDOR_ATTR_TDLS_ENABLE_MIN_BANDWIDTH_KBPS,
params->min_bandwidth_kbps);
if (ret < 0)
goto cleanup;
}
pTdlsCommand->attr_end(nl_data);
ret = pTdlsCommand->setCallbackHandler(handler,
QCA_NL80211_VENDOR_SUBCMD_TDLS_STATE);
if (ret < 0)
goto cleanup;
ret = pTdlsCommand->requestResponse();
if (ret != 0) {
ALOGE("%s: requestResponse Error:%d", __FUNCTION__, ret);
}
cleanup:
return mapErrorKernelToWifiHAL(ret);
}
/* wifi_disable_tdls - disables TDLS-auto mode for a specific route
*
* This terminates any existing TDLS with addr device, and frees the
* device resources to make TDLS connections on new routes.
*
* DON'T fire any more events on 'handler' specified in earlier call to
* wifi_enable_tdls after this action.
*/
wifi_error wifi_disable_tdls(wifi_interface_handle iface, mac_addr addr)
{
int ret = 0;
TdlsCommand *pTdlsCommand;
struct nlattr *nl_data;
interface_info *iinfo = getIfaceInfo(iface);
wifi_handle handle = getWifiHandle(iface);
pTdlsCommand = TdlsCommand::instance(handle);
if (pTdlsCommand == NULL) {
ALOGE("%s: Error TdlsCommand NULL", __FUNCTION__);
return WIFI_ERROR_UNKNOWN;
}
pTdlsCommand->setSubCmd(QCA_NL80211_VENDOR_SUBCMD_TDLS_DISABLE);
/* Create the message */
ret = pTdlsCommand->create();
if (ret < 0)
goto cleanup;
ret = pTdlsCommand->set_iface_id(iinfo->name);
if (ret < 0)
goto cleanup;
ALOGV("%s: ifindex obtained:%d", __FUNCTION__, ret);
ALOGV("%s: MAC_ADDR: " MAC_ADDR_STR, __FUNCTION__, MAC_ADDR_ARRAY(addr));
/* Add the attributes */
nl_data = pTdlsCommand->attr_start(NL80211_ATTR_VENDOR_DATA);
if (!nl_data)
goto cleanup;
ret = pTdlsCommand->put_bytes(QCA_WLAN_VENDOR_ATTR_TDLS_DISABLE_MAC_ADDR,
(char *)addr, 6);
if (ret < 0)
goto cleanup;
pTdlsCommand->attr_end(nl_data);
ret = pTdlsCommand->requestResponse();
if (ret != 0) {
ALOGE("%s: requestResponse Error:%d", __FUNCTION__, ret);
}
cleanup:
delete pTdlsCommand;
return mapErrorKernelToWifiHAL(ret);
}
/* wifi_get_tdls_status - allows getting the status of TDLS for a specific
* route
*/
wifi_error wifi_get_tdls_status(wifi_interface_handle iface, mac_addr addr,
wifi_tdls_status *status)
{
int ret = 0;
TdlsCommand *pTdlsCommand;
struct nlattr *nl_data;
interface_info *iinfo = getIfaceInfo(iface);
wifi_handle handle = getWifiHandle(iface);
pTdlsCommand = TdlsCommand::instance(handle);
if (pTdlsCommand == NULL) {
ALOGE("%s: Error TdlsCommand NULL", __FUNCTION__);
return WIFI_ERROR_UNKNOWN;
}
pTdlsCommand->setSubCmd(QCA_NL80211_VENDOR_SUBCMD_TDLS_GET_STATUS);
/* Create the message */
ret = pTdlsCommand->create();
if (ret < 0)
goto cleanup;
ret = pTdlsCommand->set_iface_id(iinfo->name);
if (ret < 0)
goto cleanup;
ALOGV("%s: ifindex obtained:%d", __FUNCTION__, ret);
/* Add the attributes */
nl_data = pTdlsCommand->attr_start(NL80211_ATTR_VENDOR_DATA);
if (!nl_data)
goto cleanup;
ret = pTdlsCommand->put_bytes(QCA_WLAN_VENDOR_ATTR_TDLS_GET_STATUS_MAC_ADDR,
(char *)addr, 6);
if (ret < 0)
goto cleanup;
pTdlsCommand->attr_end(nl_data);
ret = pTdlsCommand->requestResponse();
if (ret != 0) {
ALOGE("%s: requestResponse Error:%d", __FUNCTION__, ret);
}
pTdlsCommand->getStatusRspParams(status);
cleanup:
return mapErrorKernelToWifiHAL(ret);
}
/* return the current HW + Firmware combination's TDLS capabilities */
wifi_error wifi_get_tdls_capabilities(wifi_interface_handle iface,
wifi_tdls_capabilities *capabilities)
{
int ret = 0;
TdlsCommand *pTdlsCommand;
if (capabilities == NULL) {
ALOGE("%s: capabilities is NULL", __FUNCTION__);
return WIFI_ERROR_INVALID_ARGS;
}
interface_info *iinfo = getIfaceInfo(iface);
wifi_handle handle = getWifiHandle(iface);
pTdlsCommand = TdlsCommand::instance(handle);
if (pTdlsCommand == NULL) {
ALOGE("%s: Error TdlsCommand NULL", __FUNCTION__);
return WIFI_ERROR_UNKNOWN;
}
pTdlsCommand->setSubCmd(QCA_NL80211_VENDOR_SUBCMD_TDLS_GET_CAPABILITIES);
/* Create the message */
ret = pTdlsCommand->create();
if (ret < 0)
goto cleanup;
ret = pTdlsCommand->set_iface_id(iinfo->name);
if (ret < 0)
goto cleanup;
ret = pTdlsCommand->requestResponse();
if (ret != 0) {
ALOGE("%s: requestResponse Error:%d", __FUNCTION__, ret);
goto cleanup;
}
pTdlsCommand->getCapsRspParams(capabilities);
cleanup:
if (ret < 0)
memset(capabilities, 0, sizeof(wifi_tdls_capabilities));
delete pTdlsCommand;
return mapErrorKernelToWifiHAL(ret);
}