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PL286/hardware/broadcom/wlan/bcmdhd/wifi_hal/gscan.cpp

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#include <stdint.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include <linux/rtnetlink.h>
#include <netpacket/packet.h>
#include <linux/filter.h>
#include <linux/errqueue.h>
#include <linux/pkt_sched.h>
#include <netlink/object-api.h>
#include <netlink/netlink.h>
#include <netlink/socket.h>
#include <netlink/handlers.h>
#include "sync.h"
#define LOG_TAG "WifiHAL"
//#define LOG_NDEBUG 0 //uncomment to enable verbose logging
#include <utils/Log.h>
#include "wifi_hal.h"
#include "common.h"
#include "cpp_bindings.h"
typedef enum {
GSCAN_ATTRIBUTE_NUM_BUCKETS = 10,
GSCAN_ATTRIBUTE_BASE_PERIOD,
GSCAN_ATTRIBUTE_BUCKETS_BAND,
GSCAN_ATTRIBUTE_BUCKET_ID,
GSCAN_ATTRIBUTE_BUCKET_PERIOD,
GSCAN_ATTRIBUTE_BUCKET_NUM_CHANNELS,
GSCAN_ATTRIBUTE_BUCKET_CHANNELS,
GSCAN_ATTRIBUTE_NUM_AP_PER_SCAN,
GSCAN_ATTRIBUTE_REPORT_THRESHOLD,
GSCAN_ATTRIBUTE_NUM_SCANS_TO_CACHE,
GSCAN_ATTRIBUTE_BAND = GSCAN_ATTRIBUTE_BUCKETS_BAND,
GSCAN_ATTRIBUTE_ENABLE_FEATURE = 20,
GSCAN_ATTRIBUTE_SCAN_RESULTS_COMPLETE, /* indicates no more results */
GSCAN_ATTRIBUTE_FLUSH_FEATURE, /* Flush all the configs */
GSCAN_ENABLE_FULL_SCAN_RESULTS,
GSCAN_ATTRIBUTE_REPORT_EVENTS,
/* remaining reserved for additional attributes */
GSCAN_ATTRIBUTE_NUM_OF_RESULTS = 30,
GSCAN_ATTRIBUTE_FLUSH_RESULTS,
GSCAN_ATTRIBUTE_SCAN_RESULTS, /* flat array of wifi_scan_result */
GSCAN_ATTRIBUTE_SCAN_ID, /* indicates scan number */
GSCAN_ATTRIBUTE_SCAN_FLAGS, /* indicates if scan was aborted */
GSCAN_ATTRIBUTE_AP_FLAGS, /* flags on significant change event */
GSCAN_ATTRIBUTE_NUM_CHANNELS,
GSCAN_ATTRIBUTE_CHANNEL_LIST,
GSCAN_ATTRIBUTE_CH_BUCKET_BITMASK,
/* remaining reserved for additional attributes */
GSCAN_ATTRIBUTE_SSID = 40,
GSCAN_ATTRIBUTE_BSSID,
GSCAN_ATTRIBUTE_CHANNEL,
GSCAN_ATTRIBUTE_RSSI,
GSCAN_ATTRIBUTE_TIMESTAMP,
GSCAN_ATTRIBUTE_RTT,
GSCAN_ATTRIBUTE_RTTSD,
/* remaining reserved for additional attributes */
GSCAN_ATTRIBUTE_HOTLIST_BSSIDS = 50,
GSCAN_ATTRIBUTE_RSSI_LOW,
GSCAN_ATTRIBUTE_RSSI_HIGH,
GSCAN_ATTRIBUTE_HOTLIST_ELEM,
GSCAN_ATTRIBUTE_HOTLIST_FLUSH,
GSCAN_ATTRIBUTE_HOTLIST_BSSID_COUNT,
/* remaining reserved for additional attributes */
GSCAN_ATTRIBUTE_RSSI_SAMPLE_SIZE = 60,
GSCAN_ATTRIBUTE_LOST_AP_SAMPLE_SIZE,
GSCAN_ATTRIBUTE_MIN_BREACHING,
GSCAN_ATTRIBUTE_SIGNIFICANT_CHANGE_BSSIDS,
GSCAN_ATTRIBUTE_SIGNIFICANT_CHANGE_FLUSH,
/* EPNO */
GSCAN_ATTRIBUTE_EPNO_SSID_LIST = 70,
GSCAN_ATTRIBUTE_EPNO_SSID,
GSCAN_ATTRIBUTE_EPNO_SSID_LEN,
GSCAN_ATTRIBUTE_EPNO_RSSI,
GSCAN_ATTRIBUTE_EPNO_FLAGS,
GSCAN_ATTRIBUTE_EPNO_AUTH,
GSCAN_ATTRIBUTE_EPNO_SSID_NUM,
GSCAN_ATTRIBUTE_EPNO_FLUSH,
/* remaining reserved for additional attributes */
GSCAN_ATTRIBUTE_WHITELIST_SSID = 80,
GSCAN_ATTRIBUTE_NUM_WL_SSID,
GSCAN_ATTRIBUTE_WL_SSID_LEN,
GSCAN_ATTRIBUTE_WL_SSID_FLUSH,
GSCAN_ATTRIBUTE_WHITELIST_SSID_ELEM,
GSCAN_ATTRIBUTE_NUM_BSSID,
GSCAN_ATTRIBUTE_BSSID_PREF_LIST,
GSCAN_ATTRIBUTE_BSSID_PREF_FLUSH,
GSCAN_ATTRIBUTE_BSSID_PREF,
GSCAN_ATTRIBUTE_RSSI_MODIFIER,
/* remaining reserved for additional attributes */
GSCAN_ATTRIBUTE_A_BAND_BOOST_THRESHOLD = 90,
GSCAN_ATTRIBUTE_A_BAND_PENALTY_THRESHOLD,
GSCAN_ATTRIBUTE_A_BAND_BOOST_FACTOR,
GSCAN_ATTRIBUTE_A_BAND_PENALTY_FACTOR,
GSCAN_ATTRIBUTE_A_BAND_MAX_BOOST,
GSCAN_ATTRIBUTE_LAZY_ROAM_HYSTERESIS,
GSCAN_ATTRIBUTE_ALERT_ROAM_RSSI_TRIGGER,
GSCAN_ATTRIBUTE_LAZY_ROAM_ENABLE,
/* BSSID blacklist */
GSCAN_ATTRIBUTE_BSSID_BLACKLIST_FLUSH = 100,
GSCAN_ATTRIBUTE_BLACKLIST_BSSID,
/* ANQPO */
GSCAN_ATTRIBUTE_ANQPO_HS_LIST = 110,
GSCAN_ATTRIBUTE_ANQPO_HS_LIST_SIZE,
GSCAN_ATTRIBUTE_ANQPO_HS_NETWORK_ID,
GSCAN_ATTRIBUTE_ANQPO_HS_NAI_REALM,
GSCAN_ATTRIBUTE_ANQPO_HS_ROAM_CONSORTIUM_ID,
GSCAN_ATTRIBUTE_ANQPO_HS_PLMN,
/* Adaptive scan attributes */
GSCAN_ATTRIBUTE_BUCKET_STEP_COUNT = 120,
GSCAN_ATTRIBUTE_BUCKET_MAX_PERIOD,
/* ePNO cfg */
GSCAN_ATTRIBUTE_EPNO_5G_RSSI_THR = 130,
GSCAN_ATTRIBUTE_EPNO_2G_RSSI_THR,
GSCAN_ATTRIBUTE_EPNO_INIT_SCORE_MAX,
GSCAN_ATTRIBUTE_EPNO_CUR_CONN_BONUS,
GSCAN_ATTRIBUTE_EPNO_SAME_NETWORK_BONUS,
GSCAN_ATTRIBUTE_EPNO_SECURE_BONUS,
GSCAN_ATTRIBUTE_EPNO_5G_BONUS,
GSCAN_ATTRIBUTE_MAX
} GSCAN_ATTRIBUTE;
// helper methods
wifi_error wifi_enable_full_scan_results(wifi_request_id id, wifi_interface_handle iface,
wifi_scan_result_handler handler);
wifi_error wifi_disable_full_scan_results(wifi_request_id id, wifi_interface_handle iface);
int wifi_handle_full_scan_event(wifi_request_id id, WifiEvent& event,
wifi_scan_result_handler handler);
void convert_to_hal_result(wifi_scan_result *to, wifi_gscan_result_t *from);
void convert_to_hal_result(wifi_scan_result *to, wifi_gscan_result_t *from)
{
to->ts = from->ts;
to->channel = from->channel;
to->rssi = from->rssi;
to->rtt = from->rtt;
to->rtt_sd = from->rtt_sd;
to->beacon_period = from->beacon_period;
to->capability = from->capability;
memcpy(to->ssid, from->ssid, (DOT11_MAX_SSID_LEN+1));
memcpy(&to->bssid, &from->bssid, sizeof(mac_addr));
}
/////////////////////////////////////////////////////////////////////////////
class GetCapabilitiesCommand : public WifiCommand
{
wifi_gscan_capabilities *mCapabilities;
public:
GetCapabilitiesCommand(wifi_interface_handle iface, wifi_gscan_capabilities *capabitlites)
: WifiCommand("GetGscanCapabilitiesCommand", iface, 0), mCapabilities(capabitlites)
{
memset(mCapabilities, 0, sizeof(*mCapabilities));
}
virtual int create() {
ALOGV("Creating message to get scan capablities; iface = %d", mIfaceInfo->id);
int ret = mMsg.create(GOOGLE_OUI, GSCAN_SUBCMD_GET_CAPABILITIES);
if (ret < 0) {
return ret;
}
return ret;
}
protected:
virtual int handleResponse(WifiEvent& reply) {
ALOGV("In GetCapabilities::handleResponse");
if (reply.get_cmd() != NL80211_CMD_VENDOR) {
ALOGD("Ignoring reply with cmd = %d", reply.get_cmd());
return NL_SKIP;
}
int id = reply.get_vendor_id();
int subcmd = reply.get_vendor_subcmd();
void *data = reply.get_vendor_data();
int len = reply.get_vendor_data_len();
ALOGV("Id = %0x, subcmd = %d, len = %d, expected len = %d", id, subcmd, len,
sizeof(*mCapabilities));
memcpy(mCapabilities, data, min(len, (int) sizeof(*mCapabilities)));
return NL_OK;
}
};
wifi_error wifi_get_gscan_capabilities(wifi_interface_handle handle,
wifi_gscan_capabilities *capabilities)
{
GetCapabilitiesCommand command(handle, capabilities);
return (wifi_error) command.requestResponse();
}
class GetChannelListCommand : public WifiCommand
{
wifi_channel *channels;
int max_channels;
int *num_channels;
int band;
public:
GetChannelListCommand(wifi_interface_handle iface, wifi_channel *channel_buf, int *ch_num,
int num_max_ch, int band)
: WifiCommand("GetChannelListCommand", iface, 0), channels(channel_buf),
max_channels(num_max_ch), num_channels(ch_num), band(band)
{
memset(channels, 0, sizeof(wifi_channel) * max_channels);
}
virtual int create() {
ALOGV("Creating message to get channel list; iface = %d", mIfaceInfo->id);
int ret = mMsg.create(GOOGLE_OUI, GSCAN_SUBCMD_GET_CHANNEL_LIST);
if (ret < 0) {
return ret;
}
nlattr *data = mMsg.attr_start(NL80211_ATTR_VENDOR_DATA);
ret = mMsg.put_u32(GSCAN_ATTRIBUTE_BAND, band);
if (ret < 0) {
return ret;
}
mMsg.attr_end(data);
return ret;
}
protected:
virtual int handleResponse(WifiEvent& reply) {
ALOGV("In GetChannelList::handleResponse");
if (reply.get_cmd() != NL80211_CMD_VENDOR) {
ALOGD("Ignoring reply with cmd = %d", reply.get_cmd());
return NL_SKIP;
}
int id = reply.get_vendor_id();
int subcmd = reply.get_vendor_subcmd();
int num_channels_to_copy = 0;
nlattr *vendor_data = reply.get_attribute(NL80211_ATTR_VENDOR_DATA);
int len = reply.get_vendor_data_len();
ALOGV("Id = %0x, subcmd = %d, len = %d", id, subcmd, len);
if (vendor_data == NULL || len == 0) {
ALOGE("no vendor data in GetChannelList response; ignoring it");
return NL_SKIP;
}
for (nl_iterator it(vendor_data); it.has_next(); it.next()) {
if (it.get_type() == GSCAN_ATTRIBUTE_NUM_CHANNELS) {
num_channels_to_copy = it.get_u32();
ALOGI("Got channel list with %d channels", num_channels_to_copy);
if(num_channels_to_copy > max_channels)
num_channels_to_copy = max_channels;
*num_channels = num_channels_to_copy;
} else if (it.get_type() == GSCAN_ATTRIBUTE_CHANNEL_LIST && num_channels_to_copy) {
memcpy(channels, it.get_data(), sizeof(int) * num_channels_to_copy);
} else {
ALOGW("Ignoring invalid attribute type = %d, size = %d",
it.get_type(), it.get_len());
}
}
return NL_OK;
}
};
wifi_error wifi_get_valid_channels(wifi_interface_handle handle,
int band, int max_channels, wifi_channel *channels, int *num_channels)
{
GetChannelListCommand command(handle, channels, num_channels,
max_channels, band);
return (wifi_error) command.requestResponse();
}
/////////////////////////////////////////////////////////////////////////////
/* helper functions */
static int parseScanResults(wifi_scan_result *results, int num, nlattr *attr)
{
memset(results, 0, sizeof(wifi_scan_result) * num);
int i = 0;
for (nl_iterator it(attr); it.has_next() && i < num; it.next(), i++) {
int index = it.get_type();
ALOGI("retrieved scan result %d", index);
nlattr *sc_data = (nlattr *) it.get_data();
wifi_scan_result *result = results + i;
for (nl_iterator it2(sc_data); it2.has_next(); it2.next()) {
int type = it2.get_type();
if (type == GSCAN_ATTRIBUTE_SSID) {
strncpy(result->ssid, (char *) it2.get_data(), it2.get_len());
result->ssid[it2.get_len()] = 0;
} else if (type == GSCAN_ATTRIBUTE_BSSID) {
memcpy(result->bssid, (byte *) it2.get_data(), sizeof(mac_addr));
} else if (type == GSCAN_ATTRIBUTE_TIMESTAMP) {
result->ts = it2.get_u64();
} else if (type == GSCAN_ATTRIBUTE_CHANNEL) {
result->ts = it2.get_u16();
} else if (type == GSCAN_ATTRIBUTE_RSSI) {
result->rssi = it2.get_u8();
} else if (type == GSCAN_ATTRIBUTE_RTT) {
result->rtt = it2.get_u64();
} else if (type == GSCAN_ATTRIBUTE_RTTSD) {
result->rtt_sd = it2.get_u64();
}
}
}
if (i >= num) {
ALOGE("Got too many results; skipping some");
}
return i;
}
int createFeatureRequest(WifiRequest& request, int subcmd, int enable) {
int result = request.create(GOOGLE_OUI, subcmd);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u32(GSCAN_ATTRIBUTE_ENABLE_FEATURE, enable);
if (result < 0) {
return result;
}
request.attr_end(data);
return WIFI_SUCCESS;
}
/////////////////////////////////////////////////////////////////////////////
class FullScanResultsCommand : public WifiCommand
{
int *mParams;
wifi_scan_result_handler mHandler;
public:
FullScanResultsCommand(wifi_interface_handle iface, int id, int *params,
wifi_scan_result_handler handler)
: WifiCommand("FullScanResultsCommand", iface, id), mParams(params), mHandler(handler)
{ }
int createRequest(WifiRequest& request, int subcmd, int enable) {
int result = request.create(GOOGLE_OUI, subcmd);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u32(GSCAN_ENABLE_FULL_SCAN_RESULTS, enable);
if (result < 0) {
return result;
}
request.attr_end(data);
return WIFI_SUCCESS;
}
int start() {
ALOGV("Enabling Full scan results");
WifiRequest request(familyId(), ifaceId());
int result = createRequest(request, GSCAN_SUBCMD_ENABLE_FULL_SCAN_RESULTS, 1);
if (result != WIFI_SUCCESS) {
ALOGE("failed to create request; result = %d", result);
return result;
}
registerVendorHandler(GOOGLE_OUI, GSCAN_EVENT_FULL_SCAN_RESULTS);
result = requestResponse(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to enable full scan results; result = %d", result);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_FULL_SCAN_RESULTS);
return result;
}
return result;
}
virtual int cancel() {
ALOGV("Disabling Full scan results");
WifiRequest request(familyId(), ifaceId());
int result = createRequest(request, GSCAN_SUBCMD_ENABLE_FULL_SCAN_RESULTS, 0);
if (result != WIFI_SUCCESS) {
ALOGE("failed to create request; result = %d", result);
} else {
result = requestResponse(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to disable full scan results;result = %d", result);
}
}
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_FULL_SCAN_RESULTS);
return WIFI_SUCCESS;
}
virtual int handleResponse(WifiEvent& reply) {
ALOGD("Request complete!");
/* Nothing to do on response! */
return NL_SKIP;
}
virtual int handleEvent(WifiEvent& event) {
ALOGV("Full scan results: Got an event");
return wifi_handle_full_scan_event(id(), event, mHandler);
}
};
/////////////////////////////////////////////////////////////////////////////
class ScanCommand : public WifiCommand
{
wifi_scan_cmd_params *mParams;
wifi_scan_result_handler mHandler;
public:
ScanCommand(wifi_interface_handle iface, int id, wifi_scan_cmd_params *params,
wifi_scan_result_handler handler)
: WifiCommand("ScanCommand", iface, id), mParams(params), mHandler(handler)
{ }
int createSetupRequest(WifiRequest& request) {
int result = request.create(GOOGLE_OUI, GSCAN_SUBCMD_SET_CONFIG);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u32(GSCAN_ATTRIBUTE_BASE_PERIOD, mParams->base_period);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_NUM_BUCKETS, mParams->num_buckets);
if (result < 0) {
return result;
}
for (int i = 0; i < mParams->num_buckets; i++) {
nlattr * bucket = request.attr_start(i); // next bucket
result = request.put_u32(GSCAN_ATTRIBUTE_BUCKET_ID, mParams->buckets[i].bucket);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_BUCKET_PERIOD, mParams->buckets[i].period);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_BUCKETS_BAND,
mParams->buckets[i].band);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_BUCKET_STEP_COUNT,
mParams->buckets[i].step_count);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_BUCKET_MAX_PERIOD,
mParams->buckets[i].max_period);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_REPORT_EVENTS,
mParams->buckets[i].report_events);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_BUCKET_NUM_CHANNELS,
mParams->buckets[i].num_channels);
if (result < 0) {
return result;
}
if (mParams->buckets[i].num_channels) {
nlattr *channels = request.attr_start(GSCAN_ATTRIBUTE_BUCKET_CHANNELS);
ALOGV(" channels: ");
for (int j = 0; j < mParams->buckets[i].num_channels; j++) {
result = request.put_u32(j, mParams->buckets[i].channels[j].channel);
ALOGV(" %u", mParams->buckets[i].channels[j].channel);
if (result < 0) {
return result;
}
}
request.attr_end(channels);
}
request.attr_end(bucket);
}
request.attr_end(data);
return WIFI_SUCCESS;
}
int createScanConfigRequest(WifiRequest& request) {
int result = request.create(GOOGLE_OUI, GSCAN_SUBCMD_SET_SCAN_CONFIG);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u32(GSCAN_ATTRIBUTE_NUM_AP_PER_SCAN, mParams->max_ap_per_scan);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_REPORT_THRESHOLD,
mParams->report_threshold_percent);
if (result < 0) {
return result;
}
int num_scans = mParams->report_threshold_num_scans;
result = request.put_u32(GSCAN_ATTRIBUTE_NUM_SCANS_TO_CACHE, num_scans);
if (result < 0) {
return result;
}
request.attr_end(data);
return WIFI_SUCCESS;
}
int createStartRequest(WifiRequest& request) {
return createFeatureRequest(request, GSCAN_SUBCMD_ENABLE_GSCAN, 1);
}
int createStopRequest(WifiRequest& request) {
return createFeatureRequest(request, GSCAN_SUBCMD_ENABLE_GSCAN, 0);
}
int start() {
ALOGV("GSCAN start");
WifiRequest request(familyId(), ifaceId());
int result = createSetupRequest(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to create setup request; result = %d", result);
return result;
}
result = requestResponse(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to configure setup; result = %d", result);
return result;
}
request.destroy();
result = createScanConfigRequest(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to create scan config request; result = %d", result);
return result;
}
result = requestResponse(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to configure scan; result = %d", result);
return result;
}
ALOGV(" ....starting scan");
result = createStartRequest(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to create start request; result = %d", result);
return result;
}
registerVendorHandler(GOOGLE_OUI, GSCAN_EVENT_SCAN_RESULTS_AVAILABLE);
registerVendorHandler(GOOGLE_OUI, GSCAN_EVENT_COMPLETE_SCAN);
registerVendorHandler(GOOGLE_OUI, GSCAN_EVENT_FULL_SCAN_RESULTS);
result = requestResponse(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to start scan; result = %d", result);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_COMPLETE_SCAN);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_SCAN_RESULTS_AVAILABLE);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_FULL_SCAN_RESULTS);
return result;
}
return result;
}
virtual int cancel() {
ALOGV("Stopping scan");
WifiRequest request(familyId(), ifaceId());
int result = createStopRequest(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to create stop request; result = %d", result);
} else {
result = requestResponse(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to stop scan; result = %d", result);
}
}
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_COMPLETE_SCAN);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_SCAN_RESULTS_AVAILABLE);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_FULL_SCAN_RESULTS);
return WIFI_SUCCESS;
}
virtual int handleResponse(WifiEvent& reply) {
/* Nothing to do on response! */
return NL_SKIP;
}
virtual int handleEvent(WifiEvent& event) {
ALOGV("Got a scan results event");
//event.log();
nlattr *vendor_data = event.get_attribute(NL80211_ATTR_VENDOR_DATA);
int len = event.get_vendor_data_len();
int event_id = event.get_vendor_subcmd();
if ((event_id == GSCAN_EVENT_COMPLETE_SCAN) ||
(event_id == GSCAN_EVENT_SCAN_RESULTS_AVAILABLE)) {
if (vendor_data == NULL || len != 4) {
ALOGI("Bad event data!");
return NL_SKIP;
}
wifi_scan_event evt_type;
evt_type = (wifi_scan_event) event.get_u32(NL80211_ATTR_VENDOR_DATA);
ALOGV("Received event type %d", evt_type);
if(*mHandler.on_scan_event)
(*mHandler.on_scan_event)(id(), evt_type);
} else if (event_id == GSCAN_EVENT_FULL_SCAN_RESULTS) {
wifi_handle_full_scan_event(id(), event, mHandler);
}
return NL_SKIP;
}
};
wifi_error wifi_start_gscan(
wifi_request_id id,
wifi_interface_handle iface,
wifi_scan_cmd_params params,
wifi_scan_result_handler handler)
{
wifi_handle handle = getWifiHandle(iface);
ALOGV("Starting GScan, halHandle = %p", handle);
ScanCommand *cmd = new ScanCommand(iface, id, &params, handler);
NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
wifi_error result = wifi_register_cmd(handle, id, cmd);
if (result != WIFI_SUCCESS) {
cmd->releaseRef();
return result;
}
result = (wifi_error)cmd->start();
if (result != WIFI_SUCCESS) {
wifi_unregister_cmd(handle, id);
cmd->releaseRef();
return result;
}
return result;
}
wifi_error wifi_stop_gscan(wifi_request_id id, wifi_interface_handle iface)
{
wifi_handle handle = getWifiHandle(iface);
ALOGV("Stopping GScan, wifi_request_id = %d, halHandle = %p", id, handle);
if (id == -1) {
wifi_scan_result_handler handler;
wifi_scan_cmd_params dummy_params;
wifi_handle handle = getWifiHandle(iface);
memset(&handler, 0, sizeof(handler));
ScanCommand *cmd = new ScanCommand(iface, id, &dummy_params, handler);
NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
cmd->cancel();
cmd->releaseRef();
return WIFI_SUCCESS;
}
return wifi_cancel_cmd(id, iface);
}
wifi_error wifi_enable_full_scan_results(
wifi_request_id id,
wifi_interface_handle iface,
wifi_scan_result_handler handler)
{
wifi_handle handle = getWifiHandle(iface);
int params_dummy;
ALOGV("Enabling full scan results, halHandle = %p", handle);
FullScanResultsCommand *cmd = new FullScanResultsCommand(iface, id, &params_dummy, handler);
NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
wifi_error result = wifi_register_cmd(handle, id, cmd);
if (result != WIFI_SUCCESS) {
cmd->releaseRef();
return result;
}
result = (wifi_error)cmd->start();
if (result != WIFI_SUCCESS) {
wifi_unregister_cmd(handle, id);
cmd->releaseRef();
return result;
}
return result;
}
int wifi_handle_full_scan_event(
wifi_request_id id,
WifiEvent& event,
wifi_scan_result_handler handler)
{
nlattr *vendor_data = event.get_attribute(NL80211_ATTR_VENDOR_DATA);
unsigned int len = event.get_vendor_data_len();
if (vendor_data == NULL || len < sizeof(wifi_gscan_full_result_t)) {
ALOGI("Full scan results: No scan results found");
return NL_SKIP;
}
wifi_gscan_full_result_t *drv_res = (wifi_gscan_full_result_t *)event.get_vendor_data();
/* To protect against corrupted data, put a ceiling */
int ie_len = min(MAX_PROBE_RESP_IE_LEN, drv_res->ie_length);
wifi_scan_result *full_scan_result;
wifi_gscan_result_t *fixed = &drv_res->fixed;
if ((ie_len + offsetof(wifi_gscan_full_result_t, ie_data)) > len) {
ALOGE("BAD event data, len %d ie_len %d fixed length %d!\n", len,
ie_len, offsetof(wifi_gscan_full_result_t, ie_data));
return NL_SKIP;
}
full_scan_result = (wifi_scan_result *) malloc((ie_len + offsetof(wifi_scan_result, ie_data)));
if (!full_scan_result) {
ALOGE("Full scan results: Can't malloc!\n");
return NL_SKIP;
}
convert_to_hal_result(full_scan_result, fixed);
full_scan_result->ie_length = ie_len;
memcpy(full_scan_result->ie_data, drv_res->ie_data, ie_len);
if(handler.on_full_scan_result)
handler.on_full_scan_result(id, full_scan_result, drv_res->scan_ch_bucket);
ALOGV("Full scan result: %-32s %02x:%02x:%02x:%02x:%02x:%02x %d %d %lld %lld %lld %x %d\n",
fixed->ssid, fixed->bssid[0], fixed->bssid[1], fixed->bssid[2], fixed->bssid[3],
fixed->bssid[4], fixed->bssid[5], fixed->rssi, fixed->channel, fixed->ts,
fixed->rtt, fixed->rtt_sd, drv_res->scan_ch_bucket, drv_res->ie_length);
free(full_scan_result);
return NL_SKIP;
}
wifi_error wifi_disable_full_scan_results(wifi_request_id id, wifi_interface_handle iface)
{
ALOGV("Disabling full scan results");
wifi_handle handle = getWifiHandle(iface);
if(id == -1) {
wifi_scan_result_handler handler;
wifi_handle handle = getWifiHandle(iface);
int params_dummy;
memset(&handler, 0, sizeof(handler));
FullScanResultsCommand *cmd = new FullScanResultsCommand(iface, 0, &params_dummy, handler);
NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
cmd->cancel();
cmd->releaseRef();
return WIFI_SUCCESS;
}
return wifi_cancel_cmd(id, iface);
}
/////////////////////////////////////////////////////////////////////////////
class GetScanResultsCommand : public WifiCommand {
wifi_cached_scan_results *mScans;
int mMax;
int *mNum;
int mRetrieved;
byte mFlush;
int mCompleted;
public:
GetScanResultsCommand(wifi_interface_handle iface, byte flush,
wifi_cached_scan_results *results, int max, int *num)
: WifiCommand("GetScanResultsCommand", iface, -1), mScans(results), mMax(max), mNum(num),
mRetrieved(0), mFlush(flush), mCompleted(0)
{ }
int createRequest(WifiRequest& request, int num, byte flush) {
int result = request.create(GOOGLE_OUI, GSCAN_SUBCMD_GET_SCAN_RESULTS);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u32(GSCAN_ATTRIBUTE_NUM_OF_RESULTS, num);
if (result < 0) {
return result;
}
result = request.put_u8(GSCAN_ATTRIBUTE_FLUSH_RESULTS, flush);
if (result < 0) {
return result;
}
request.attr_end(data);
return WIFI_SUCCESS;
}
int execute() {
WifiRequest request(familyId(), ifaceId());
ALOGV("retrieving %d scan results", mMax);
for (int i = 0; i < 10 && mRetrieved < mMax; i++) {
int num_to_retrieve = mMax - mRetrieved;
// ALOGI("retrieving %d scan results in one shot", num_to_retrieve);
int result = createRequest(request, num_to_retrieve, mFlush);
if (result < 0) {
ALOGE("failed to create request");
return result;
}
int prev_retrieved = mRetrieved;
result = requestResponse(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to retrieve scan results; result = %d", result);
return result;
}
if (mRetrieved == prev_retrieved || mCompleted) {
/* no more items left to retrieve */
break;
}
request.destroy();
}
ALOGV("GetScanResults read %d results", mRetrieved);
*mNum = mRetrieved;
return WIFI_SUCCESS;
}
virtual int handleResponse(WifiEvent& reply) {
ALOGV("In GetScanResultsCommand::handleResponse");
if (reply.get_cmd() != NL80211_CMD_VENDOR) {
ALOGD("Ignoring reply with cmd = %d", reply.get_cmd());
return NL_SKIP;
}
int id = reply.get_vendor_id();
int subcmd = reply.get_vendor_subcmd();
ALOGV("Id = %0x, subcmd = %d", id, subcmd);
/*
if (subcmd != GSCAN_SUBCMD_SCAN_RESULTS) {
ALOGE("Invalid response to GetScanResultsCommand; ignoring it");
return NL_SKIP;
}
*/
nlattr *vendor_data = reply.get_attribute(NL80211_ATTR_VENDOR_DATA);
int len = reply.get_vendor_data_len();
if (vendor_data == NULL || len == 0) {
ALOGE("no vendor data in GetScanResults response; ignoring it");
return NL_SKIP;
}
for (nl_iterator it(vendor_data); it.has_next(); it.next()) {
if (it.get_type() == GSCAN_ATTRIBUTE_SCAN_RESULTS_COMPLETE) {
mCompleted = it.get_u8();
ALOGV("retrieved mCompleted flag : %d", mCompleted);
} else if (it.get_type() == GSCAN_ATTRIBUTE_SCAN_RESULTS || it.get_type() == 0) {
int scan_id = 0, flags = 0, num = 0, scan_ch_bucket_mask = 0;
for (nl_iterator it2(it.get()); it2.has_next(); it2.next()) {
if (it2.get_type() == GSCAN_ATTRIBUTE_SCAN_ID) {
scan_id = it2.get_u32();
ALOGV("retrieved scan_id : 0x%0x", scan_id);
} else if (it2.get_type() == GSCAN_ATTRIBUTE_SCAN_FLAGS) {
flags = it2.get_u8();
ALOGV("retrieved scan_flags : 0x%0x", flags);
} else if (it2.get_type() == GSCAN_ATTRIBUTE_NUM_OF_RESULTS) {
num = it2.get_u32();
ALOGV("retrieved num_results: %d", num);
} else if (it2.get_type() == GSCAN_ATTRIBUTE_CH_BUCKET_BITMASK) {
scan_ch_bucket_mask = it2.get_u32();
ALOGD("retrieved scan_ch_bucket_mask: %x", scan_ch_bucket_mask);
} else if (it2.get_type() == GSCAN_ATTRIBUTE_SCAN_RESULTS && num) {
if (mRetrieved >= mMax) {
ALOGW("Stored %d scans, ignoring excess results", mRetrieved);
break;
}
num = min(num, (int)(it2.get_len()/sizeof(wifi_gscan_result)));
num = min(num, (int)MAX_AP_CACHE_PER_SCAN);
ALOGV("Copying %d scan results", num);
wifi_gscan_result_t *results = (wifi_gscan_result_t *)it2.get_data();
wifi_scan_result *mScanResults = mScans[mRetrieved].results;
for (int i = 0; i < num; i++) {
wifi_gscan_result_t *result = &results[i];
convert_to_hal_result(&mScanResults[i], result);
mScanResults[i].ie_length = 0;
ALOGV("%02d %-32s %02x:%02x:%02x:%02x:%02x:%02x %04d", i,
result->ssid, result->bssid[0], result->bssid[1], result->bssid[2],
result->bssid[3], result->bssid[4], result->bssid[5],
result->rssi);
}
mScans[mRetrieved].scan_id = scan_id;
mScans[mRetrieved].flags = flags;
mScans[mRetrieved].num_results = num;
mScans[mRetrieved].buckets_scanned = scan_ch_bucket_mask;
ALOGV("Setting result of scan_id : 0x%0x", mScans[mRetrieved].scan_id);
mRetrieved++;
} else {
ALOGW("Ignoring invalid attribute type = %d, size = %d",
it.get_type(), it.get_len());
}
}
} else {
ALOGW("Ignoring invalid attribute type = %d, size = %d",
it.get_type(), it.get_len());
}
}
ALOGV("GetScanResults read %d results", mRetrieved);
return NL_OK;
}
};
wifi_error wifi_get_cached_gscan_results(wifi_interface_handle iface, byte flush,
int max, wifi_cached_scan_results *results, int *num) {
ALOGV("Getting cached scan results, iface handle = %p, num = %d", iface, *num);
GetScanResultsCommand *cmd = new GetScanResultsCommand(iface, flush, results, max, num);
NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
wifi_error err = (wifi_error)cmd->execute();
cmd->releaseRef();
return err;
}
/////////////////////////////////////////////////////////////////////////////
class BssidHotlistCommand : public WifiCommand
{
private:
wifi_bssid_hotlist_params mParams;
wifi_hotlist_ap_found_handler mHandler;
static const int MAX_RESULTS = 64;
wifi_scan_result mResults[MAX_RESULTS];
public:
BssidHotlistCommand(wifi_interface_handle handle, int id,
wifi_bssid_hotlist_params params, wifi_hotlist_ap_found_handler handler)
: WifiCommand("BssidHotlistCommand", handle, id), mParams(params), mHandler(handler)
{ }
int createSetupRequest(WifiRequest& request) {
int result = request.create(GOOGLE_OUI, GSCAN_SUBCMD_SET_HOTLIST);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u8(GSCAN_ATTRIBUTE_HOTLIST_FLUSH, 1);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_LOST_AP_SAMPLE_SIZE, mParams.lost_ap_sample_size);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_HOTLIST_BSSID_COUNT, mParams.num_bssid);
if (result < 0) {
return result;
}
struct nlattr * attr = request.attr_start(GSCAN_ATTRIBUTE_HOTLIST_BSSIDS);
for (int i = 0; i < mParams.num_bssid; i++) {
nlattr *attr2 = request.attr_start(GSCAN_ATTRIBUTE_HOTLIST_ELEM);
if (attr2 == NULL) {
return WIFI_ERROR_OUT_OF_MEMORY;
}
result = request.put_addr(GSCAN_ATTRIBUTE_BSSID, mParams.ap[i].bssid);
if (result < 0) {
return result;
}
result = request.put_u8(GSCAN_ATTRIBUTE_RSSI_HIGH, mParams.ap[i].high);
if (result < 0) {
return result;
}
result = request.put_u8(GSCAN_ATTRIBUTE_RSSI_LOW, mParams.ap[i].low);
if (result < 0) {
return result;
}
request.attr_end(attr2);
}
request.attr_end(attr);
request.attr_end(data);
return result;
}
int createTeardownRequest(WifiRequest& request) {
int result = request.create(GOOGLE_OUI, GSCAN_SUBCMD_SET_HOTLIST);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u8(GSCAN_ATTRIBUTE_HOTLIST_FLUSH, 1);
if (result < 0) {
return result;
}
struct nlattr * attr = request.attr_start(GSCAN_ATTRIBUTE_HOTLIST_BSSIDS);
request.attr_end(attr);
request.attr_end(data);
return result;
}
int start() {
ALOGI("Executing hotlist setup request, num = %d", mParams.num_bssid);
WifiRequest request(familyId(), ifaceId());
int result = createSetupRequest(request);
if (result < 0) {
return result;
}
result = requestResponse(request);
if (result < 0) {
ALOGI("Failed to execute hotlist setup request, result = %d", result);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_HOTLIST_RESULTS_FOUND);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_HOTLIST_RESULTS_LOST);
return result;
}
ALOGI("Successfully set %d APs in the hotlist ", mParams.num_bssid);
result = createFeatureRequest(request, GSCAN_SUBCMD_ENABLE_GSCAN, 1);
if (result < 0) {
return result;
}
registerVendorHandler(GOOGLE_OUI, GSCAN_EVENT_HOTLIST_RESULTS_FOUND);
registerVendorHandler(GOOGLE_OUI, GSCAN_EVENT_HOTLIST_RESULTS_LOST);
result = requestResponse(request);
if (result < 0) {
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_HOTLIST_RESULTS_FOUND);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_HOTLIST_RESULTS_LOST);
return result;
}
ALOGI("successfully restarted the scan");
return result;
}
virtual int cancel() {
/* unregister event handler */
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_HOTLIST_RESULTS_FOUND);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_HOTLIST_RESULTS_LOST);
/* create set hotlist message with empty hotlist */
WifiRequest request(familyId(), ifaceId());
int result = createTeardownRequest(request);
if (result < 0) {
return result;
}
result = requestResponse(request);
if (result < 0) {
return result;
}
ALOGI("Successfully reset APs in current hotlist");
return result;
}
virtual int handleResponse(WifiEvent& reply) {
/* Nothing to do on response! */
return NL_SKIP;
}
virtual int handleEvent(WifiEvent& event) {
ALOGI("Hotlist AP event");
int event_id = event.get_vendor_subcmd();
// event.log();
nlattr *vendor_data = event.get_attribute(NL80211_ATTR_VENDOR_DATA);
int len = event.get_vendor_data_len();
if (vendor_data == NULL || len == 0) {
ALOGI("No scan results found");
return NL_SKIP;
}
memset(mResults, 0, sizeof(wifi_scan_result) * MAX_RESULTS);
int num = len / sizeof(wifi_gscan_result_t);
wifi_gscan_result_t *inp = (wifi_gscan_result_t *)event.get_vendor_data();
num = min(MAX_RESULTS, num);
for (int i = 0; i < num; i++, inp++) {
convert_to_hal_result(&(mResults[i]), inp);
}
if (event_id == GSCAN_EVENT_HOTLIST_RESULTS_FOUND) {
ALOGI("FOUND %d hotlist APs", num);
if (*mHandler.on_hotlist_ap_found)
(*mHandler.on_hotlist_ap_found)(id(), num, mResults);
} else if (event_id == GSCAN_EVENT_HOTLIST_RESULTS_LOST) {
ALOGI("LOST %d hotlist APs", num);
if (*mHandler.on_hotlist_ap_lost)
(*mHandler.on_hotlist_ap_lost)(id(), num, mResults);
}
return NL_SKIP;
}
};
class ePNOCommand : public WifiCommand
{
private:
wifi_epno_params epno_params;
wifi_epno_handler mHandler;
wifi_scan_result mResults[MAX_EPNO_NETWORKS];
public:
ePNOCommand(wifi_interface_handle handle, int id,
const wifi_epno_params *params, wifi_epno_handler handler)
: WifiCommand("ePNOCommand", handle, id), mHandler(handler)
{
if (params != NULL) {
memcpy(&epno_params, params, sizeof(wifi_epno_params));
} else {
memset(&epno_params, 0, sizeof(wifi_epno_params));
}
}
int createSetupRequest(WifiRequest& request) {
if (epno_params.num_networks > MAX_EPNO_NETWORKS) {
ALOGE("wrong epno num_networks:%d", epno_params.num_networks);
return WIFI_ERROR_INVALID_ARGS;
}
int result = request.create(GOOGLE_OUI, GSCAN_SUBCMD_SET_EPNO_SSID);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u8(GSCAN_ATTRIBUTE_EPNO_FLUSH, 1);
if (result < 0) {
return result;
}
result = request.put_u8(GSCAN_ATTRIBUTE_EPNO_5G_RSSI_THR,
(u8)epno_params.min5GHz_rssi);
if (result < 0) {
return result;
}
result = request.put_u8(GSCAN_ATTRIBUTE_EPNO_2G_RSSI_THR,
(u8)epno_params.min24GHz_rssi);
if (result < 0) {
return result;
}
result = request.put_u16(GSCAN_ATTRIBUTE_EPNO_INIT_SCORE_MAX,
epno_params.initial_score_max);
if (result < 0) {
return result;
}
result = request.put_u16(GSCAN_ATTRIBUTE_EPNO_CUR_CONN_BONUS,
epno_params.current_connection_bonus);
if (result < 0) {
return result;
}
result = request.put_u16(GSCAN_ATTRIBUTE_EPNO_SAME_NETWORK_BONUS,
epno_params.same_network_bonus);
if (result < 0) {
return result;
}
result = request.put_u16(GSCAN_ATTRIBUTE_EPNO_SECURE_BONUS,
epno_params.secure_bonus);
if (result < 0) {
return result;
}
result = request.put_u16(GSCAN_ATTRIBUTE_EPNO_5G_BONUS,
epno_params.band5GHz_bonus);
if (result < 0) {
return result;
}
result = request.put_u8(GSCAN_ATTRIBUTE_EPNO_SSID_NUM,
epno_params.num_networks);
if (result < 0) {
return result;
}
struct nlattr * attr = request.attr_start(GSCAN_ATTRIBUTE_EPNO_SSID_LIST);
wifi_epno_network *ssid_list = epno_params.networks;
for (int i = 0; i < epno_params.num_networks; i++) {
nlattr *attr2 = request.attr_start(i);
if (attr2 == NULL) {
return WIFI_ERROR_OUT_OF_MEMORY;
}
result = request.put(GSCAN_ATTRIBUTE_EPNO_SSID, ssid_list[i].ssid, DOT11_MAX_SSID_LEN);
ALOGI("PNO network: SSID %s flags %x auth %x", ssid_list[i].ssid,
ssid_list[i].flags,
ssid_list[i].auth_bit_field);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_EPNO_SSID_LEN, strlen(ssid_list[i].ssid));
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_EPNO_FLAGS, ssid_list[i].flags);
if (result < 0) {
return result;
}
result = request.put_u32(GSCAN_ATTRIBUTE_EPNO_AUTH, ssid_list[i].auth_bit_field);
if (result < 0) {
return result;
}
request.attr_end(attr2);
}
request.attr_end(attr);
request.attr_end(data);
return result;
}
int createTeardownRequest(WifiRequest& request) {
int result = request.create(GOOGLE_OUI, GSCAN_SUBCMD_SET_EPNO_SSID);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u8(GSCAN_ATTRIBUTE_EPNO_FLUSH, 1);
if (result < 0) {
return result;
}
request.attr_end(data);
return result;
}
int start() {
ALOGI("Executing ePNO setup request, num = %d", epno_params.num_networks);
WifiRequest request(familyId(), ifaceId());
int result = createSetupRequest(request);
if (result < 0) {
return result;
}
result = requestResponse(request);
if (result < 0) {
ALOGI("Failed to execute ePNO setup request, result = %d", result);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_EPNO_EVENT);
return result;
}
ALOGI("Successfully set %d SSIDs for ePNO", epno_params.num_networks);
registerVendorHandler(GOOGLE_OUI, GSCAN_EVENT_EPNO_EVENT);
ALOGI("successfully restarted the scan");
return result;
}
virtual int cancel() {
/* unregister event handler */
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_EPNO_EVENT);
/* create set hotlist message with empty hotlist */
WifiRequest request(familyId(), ifaceId());
int result = createTeardownRequest(request);
if (result < 0) {
return result;
}
result = requestResponse(request);
if (result < 0) {
return result;
}
ALOGI("Successfully reset APs in current hotlist");
return result;
}
virtual int handleResponse(WifiEvent& reply) {
/* Nothing to do on response! */
return NL_SKIP;
}
virtual int handleEvent(WifiEvent& event) {
ALOGI("ePNO event");
int event_id = event.get_vendor_subcmd();
// event.log();
nlattr *vendor_data = event.get_attribute(NL80211_ATTR_VENDOR_DATA);
int len = event.get_vendor_data_len();
if (vendor_data == NULL || len == 0) {
ALOGI("No scan results found");
return NL_SKIP;
}
memset(mResults, 0, sizeof(wifi_scan_result) * MAX_EPNO_NETWORKS);
unsigned int num = len / sizeof(wifi_pno_result_t);
unsigned int i;
num = min(MAX_EPNO_NETWORKS, num);
wifi_pno_result_t *res = (wifi_pno_result_t *) event.get_vendor_data();
for (i = 0; i < num; i++) {
if (res[i].flags == PNO_SSID_FOUND) {
memcpy(mResults[i].ssid, res[i].ssid, res[i].ssid_len);
memcpy(mResults[i].bssid, res[i].bssid, sizeof(mac_addr));
mResults[i].ssid[res[i].ssid_len] = '\0';
mResults[i].channel = res[i].channel;
mResults[i].rssi = res[i].rssi;
}
}
if (*mHandler.on_network_found)
(*mHandler.on_network_found)(id(), num, mResults);
return NL_SKIP;
}
};
wifi_error wifi_set_bssid_hotlist(wifi_request_id id, wifi_interface_handle iface,
wifi_bssid_hotlist_params params, wifi_hotlist_ap_found_handler handler)
{
wifi_handle handle = getWifiHandle(iface);
BssidHotlistCommand *cmd = new BssidHotlistCommand(iface, id, params, handler);
NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
wifi_error result = wifi_register_cmd(handle, id, cmd);
if (result != WIFI_SUCCESS) {
cmd->releaseRef();
return result;
}
result = (wifi_error)cmd->start();
if (result != WIFI_SUCCESS) {
wifi_unregister_cmd(handle, id);
cmd->releaseRef();
return result;
}
return result;
}
wifi_error wifi_reset_bssid_hotlist(wifi_request_id id, wifi_interface_handle iface)
{
return wifi_cancel_cmd(id, iface);
}
/////////////////////////////////////////////////////////////////////////////
class SignificantWifiChangeCommand : public WifiCommand
{
typedef struct {
mac_addr bssid; // BSSID
wifi_channel channel; // channel frequency in MHz
int num_rssi; // number of rssi samples
wifi_rssi rssi[8]; // RSSI history in db
} wifi_significant_change_result_internal;
private:
wifi_significant_change_params mParams;
wifi_significant_change_handler mHandler;
static const int MAX_RESULTS = 64;
wifi_significant_change_result_internal mResultsBuffer[MAX_RESULTS];
wifi_significant_change_result *mResults[MAX_RESULTS];
public:
SignificantWifiChangeCommand(wifi_interface_handle handle, int id,
wifi_significant_change_params params, wifi_significant_change_handler handler)
: WifiCommand("SignificantWifiChangeCommand", handle, id), mParams(params),
mHandler(handler)
{ }
int createSetupRequest(WifiRequest& request) {
int result = request.create(GOOGLE_OUI, GSCAN_SUBCMD_SET_SIGNIFICANT_CHANGE_CONFIG);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u8(GSCAN_ATTRIBUTE_SIGNIFICANT_CHANGE_FLUSH, 1);
if (result < 0) {
return result;
}
result = request.put_u16(GSCAN_ATTRIBUTE_RSSI_SAMPLE_SIZE, mParams.rssi_sample_size);
if (result < 0) {
return result;
}
result = request.put_u16(GSCAN_ATTRIBUTE_LOST_AP_SAMPLE_SIZE, mParams.lost_ap_sample_size);
if (result < 0) {
return result;
}
result = request.put_u16(GSCAN_ATTRIBUTE_MIN_BREACHING, mParams.min_breaching);
if (result < 0) {
return result;
}
result = request.put_u16(GSCAN_ATTRIBUTE_NUM_BSSID, mParams.num_bssid);
if (result < 0) {
return result;
}
if (mParams.num_bssid != 0) {
nlattr* attr = request.attr_start(GSCAN_ATTRIBUTE_SIGNIFICANT_CHANGE_BSSIDS);
if (attr == NULL) {
return WIFI_ERROR_OUT_OF_MEMORY;
}
for (int i = 0; i < mParams.num_bssid; i++) {
nlattr* attr2 = request.attr_start(i);
if (attr2 == NULL) {
return WIFI_ERROR_OUT_OF_MEMORY;
}
result = request.put_addr(GSCAN_ATTRIBUTE_BSSID, mParams.ap[i].bssid);
if (result < 0) {
return result;
}
result = request.put_u8(GSCAN_ATTRIBUTE_RSSI_HIGH, mParams.ap[i].high);
if (result < 0) {
return result;
}
result = request.put_u8(GSCAN_ATTRIBUTE_RSSI_LOW, mParams.ap[i].low);
if (result < 0) {
return result;
}
request.attr_end(attr2);
}
request.attr_end(attr);
}
request.attr_end(data);
return result;
}
int createTeardownRequest(WifiRequest& request) {
int result = request.create(GOOGLE_OUI, GSCAN_SUBCMD_SET_SIGNIFICANT_CHANGE_CONFIG);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
result = request.put_u16(GSCAN_ATTRIBUTE_SIGNIFICANT_CHANGE_FLUSH, 1);
if (result < 0) {
return result;
}
request.attr_end(data);
return result;
}
int start() {
ALOGI("Set significant wifi change config");
WifiRequest request(familyId(), ifaceId());
int result = createSetupRequest(request);
if (result < 0) {
return result;
}
result = requestResponse(request);
if (result < 0) {
ALOGI("failed to set significant wifi change config %d", result);
return result;
}
ALOGI("successfully set significant wifi change config");
result = createFeatureRequest(request, GSCAN_SUBCMD_ENABLE_GSCAN, 1);
if (result < 0) {
return result;
}
registerVendorHandler(GOOGLE_OUI, GSCAN_EVENT_SIGNIFICANT_CHANGE_RESULTS);
result = requestResponse(request);
if (result < 0) {
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_SIGNIFICANT_CHANGE_RESULTS);
return result;
}
ALOGI("successfully restarted the scan");
return result;
}
virtual int cancel() {
/* unregister event handler */
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_SIGNIFICANT_CHANGE_RESULTS);
/* create set significant change monitor message with empty hotlist */
WifiRequest request(familyId(), ifaceId());
int result = createTeardownRequest(request);
if (result < 0) {
return result;
}
result = requestResponse(request);
if (result < 0) {
return result;
}
ALOGI("successfully reset significant wifi change config");
return result;
}
virtual int handleResponse(WifiEvent& reply) {
/* Nothing to do on response! */
return NL_SKIP;
}
virtual int handleEvent(WifiEvent& event) {
ALOGV("Got a significant wifi change event");
nlattr *vendor_data = event.get_attribute(NL80211_ATTR_VENDOR_DATA);
int len = event.get_vendor_data_len();
if (vendor_data == NULL || len == 0) {
ALOGI("No scan results found");
return NL_SKIP;
}
typedef struct {
uint16_t flags;
uint16_t channel;
mac_addr bssid;
s8 rssi_history[8];
} ChangeInfo;
int num = min(len / sizeof(ChangeInfo), MAX_RESULTS);
ChangeInfo *ci = (ChangeInfo *)event.get_vendor_data();
for (int i = 0; i < num; i++) {
memcpy(mResultsBuffer[i].bssid, ci[i].bssid, sizeof(mac_addr));
mResultsBuffer[i].channel = ci[i].channel;
mResultsBuffer[i].num_rssi = 8;
for (int j = 0; j < mResultsBuffer[i].num_rssi; j++)
mResultsBuffer[i].rssi[j] = (int) ci[i].rssi_history[j];
mResults[i] = reinterpret_cast<wifi_significant_change_result *>(&(mResultsBuffer[i]));
}
ALOGV("Retrieved %d scan results", num);
if (num != 0) {
(*mHandler.on_significant_change)(id(), num, mResults);
} else {
ALOGW("No significant change reported");
}
return NL_SKIP;
}
};
wifi_error wifi_set_significant_change_handler(wifi_request_id id, wifi_interface_handle iface,
wifi_significant_change_params params, wifi_significant_change_handler handler)
{
wifi_handle handle = getWifiHandle(iface);
SignificantWifiChangeCommand *cmd = new SignificantWifiChangeCommand(
iface, id, params, handler);
NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
wifi_error result = wifi_register_cmd(handle, id, cmd);
if (result != WIFI_SUCCESS) {
cmd->releaseRef();
return result;
}
result = (wifi_error)cmd->start();
if (result != WIFI_SUCCESS) {
wifi_unregister_cmd(handle, id);
cmd->releaseRef();
return result;
}
return result;
}
wifi_error wifi_reset_significant_change_handler(wifi_request_id id, wifi_interface_handle iface)
{
return wifi_cancel_cmd(id, iface);
}
wifi_error wifi_reset_epno_list(wifi_request_id id, wifi_interface_handle iface)
{
if (id == -1) {
wifi_epno_handler handler;
wifi_handle handle = getWifiHandle(iface);
memset(&handler, 0, sizeof(handler));
ePNOCommand *cmd = new ePNOCommand(iface, id, NULL, handler);
NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
cmd->cancel();
cmd->releaseRef();
return WIFI_SUCCESS;
}
return wifi_cancel_cmd(id, iface);
}
wifi_error wifi_set_epno_list(wifi_request_id id, wifi_interface_handle iface,
const wifi_epno_params *params, wifi_epno_handler handler)
{
wifi_handle handle = getWifiHandle(iface);
ePNOCommand *cmd = new ePNOCommand(iface, id, params, handler);
NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
wifi_error result = wifi_register_cmd(handle, id, cmd);
if (result != WIFI_SUCCESS) {
cmd->releaseRef();
return result;
}
result = (wifi_error)cmd->start();
if (result != WIFI_SUCCESS) {
wifi_unregister_cmd(handle, id);
cmd->releaseRef();
return result;
}
return result;
}
////////////////////////////////////////////////////////////////////////////////
class AnqpoConfigureCommand : public WifiCommand
{
int num_hs;
wifi_passpoint_network *mNetworks;
wifi_passpoint_event_handler mHandler;
wifi_scan_result *mResult;
public:
AnqpoConfigureCommand(wifi_request_id id, wifi_interface_handle iface,
int num, wifi_passpoint_network *hs_list, wifi_passpoint_event_handler handler)
: WifiCommand("AnqpoConfigureCommand", iface, id), num_hs(num), mNetworks(hs_list),
mHandler(handler)
{
mResult = NULL;
}
int createRequest(WifiRequest& request, int val) {
int result = request.create(GOOGLE_OUI, GSCAN_SUBCMD_ANQPO_CONFIG);
result = request.put_u32(GSCAN_ATTRIBUTE_ANQPO_HS_LIST_SIZE, num_hs);
if (result < 0) {
return result;
}
nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA);
struct nlattr * attr = request.attr_start(GSCAN_ATTRIBUTE_ANQPO_HS_LIST);
for (int i = 0; i < num_hs; i++) {
nlattr *attr2 = request.attr_start(i);
if (attr2 == NULL) {
return WIFI_ERROR_OUT_OF_MEMORY;
}
result = request.put_u32(GSCAN_ATTRIBUTE_ANQPO_HS_NETWORK_ID, mNetworks[i].id);
if (result < 0) {
return result;
}
result = request.put(GSCAN_ATTRIBUTE_ANQPO_HS_NAI_REALM, mNetworks[i].realm, 256);
if (result < 0) {
return result;
}
result = request.put(GSCAN_ATTRIBUTE_ANQPO_HS_ROAM_CONSORTIUM_ID,
mNetworks[i].roamingConsortiumIds, 128);
if (result < 0) {
return result;
}
result = request.put(GSCAN_ATTRIBUTE_ANQPO_HS_PLMN, mNetworks[i].plmn, 3);
if (result < 0) {
return result;
}
request.attr_end(attr2);
}
request.attr_end(attr);
request.attr_end(data);
return WIFI_SUCCESS;
}
int start() {
WifiRequest request(familyId(), ifaceId());
int result = createRequest(request, num_hs);
if (result != WIFI_SUCCESS) {
ALOGE("failed to create request; result = %d", result);
return result;
}
registerVendorHandler(GOOGLE_OUI, GSCAN_EVENT_ANQPO_HOTSPOT_MATCH);
result = requestResponse(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to set ANQPO networks; result = %d", result);
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_ANQPO_HOTSPOT_MATCH);
return result;
}
return result;
}
virtual int cancel() {
WifiRequest request(familyId(), ifaceId());
int result = createRequest(request, 0);
if (result != WIFI_SUCCESS) {
ALOGE("failed to create request; result = %d", result);
} else {
result = requestResponse(request);
if (result != WIFI_SUCCESS) {
ALOGE("failed to reset ANQPO networks;result = %d", result);
}
}
unregisterVendorHandler(GOOGLE_OUI, GSCAN_EVENT_ANQPO_HOTSPOT_MATCH);
return WIFI_SUCCESS;
}
virtual int handleResponse(WifiEvent& reply) {
ALOGD("Request complete!");
/* Nothing to do on response! */
return NL_SKIP;
}
virtual int handleEvent(WifiEvent& event) {
typedef struct {
u16 channel; /* channel of GAS protocol */
u8 dialog_token; /* GAS dialog token */
u8 fragment_id; /* fragment id */
u16 status_code; /* status code on GAS completion */
u16 data_len; /* length of data to follow */
u8 data[1]; /* variable length specified by data_len */
} wifi_anqp_gas_resp;
ALOGI("ANQPO hotspot matched event!");
nlattr *vendor_data = event.get_attribute(NL80211_ATTR_VENDOR_DATA);
unsigned int len = event.get_vendor_data_len();
if (vendor_data == NULL || len < sizeof(wifi_scan_result)) {
ALOGI("No scan results found");
return NL_SKIP;
}
mResult = (wifi_scan_result *)malloc(sizeof(wifi_scan_result));
if (!mResult) {
return NL_SKIP;
}
wifi_gscan_full_result_t *drv_res = (wifi_gscan_full_result_t *)event.get_vendor_data();
wifi_gscan_result_t *fixed = &drv_res->fixed;
convert_to_hal_result(mResult, fixed);
byte *anqp = (byte *)drv_res + offsetof(wifi_gscan_full_result_t, ie_data) + drv_res->ie_length;
wifi_anqp_gas_resp *gas = (wifi_anqp_gas_resp *)anqp;
int anqp_len = offsetof(wifi_anqp_gas_resp, data) + gas->data_len;
int networkId = *(int *)((byte *)anqp + anqp_len);
ALOGI("%-32s\t", mResult->ssid);
ALOGI("%02x:%02x:%02x:%02x:%02x:%02x ", mResult->bssid[0], mResult->bssid[1],
mResult->bssid[2], mResult->bssid[3], mResult->bssid[4], mResult->bssid[5]);
ALOGI("%d\t", mResult->rssi);
ALOGI("%d\t", mResult->channel);
ALOGI("%lld\t", mResult->ts);
ALOGI("%lld\t", mResult->rtt);
ALOGI("%lld\n", mResult->rtt_sd);
if(*mHandler.on_passpoint_network_found)
(*mHandler.on_passpoint_network_found)(id(), networkId, mResult, anqp_len, anqp);
free(mResult);
return NL_SKIP;
}
};
wifi_error wifi_set_passpoint_list(wifi_request_id id, wifi_interface_handle iface, int num,
wifi_passpoint_network *networks, wifi_passpoint_event_handler handler)
{
wifi_handle handle = getWifiHandle(iface);
AnqpoConfigureCommand *cmd = new AnqpoConfigureCommand(id, iface, num, networks, handler);
NULL_CHECK_RETURN(cmd, "memory allocation failure", WIFI_ERROR_OUT_OF_MEMORY);
wifi_error result = wifi_register_cmd(handle, id, cmd);
if (result != WIFI_SUCCESS) {
cmd->releaseRef();
return result;
}
result = (wifi_error)cmd->start();
if (result != WIFI_SUCCESS) {
wifi_unregister_cmd(handle, id);
cmd->releaseRef();
return result;
}
return result;
}
wifi_error wifi_reset_passpoint_list(wifi_request_id id, wifi_interface_handle iface)
{
return wifi_cancel_cmd(id, iface);
}