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usb: migrate UsbDataSessionMonitor to libpixelusb

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Use the libpixelusb version of UsbDataSessionMonitor.

Bug: 388367091
Test: test on oriole
Flag: EXEMPT CP
Change-Id: I93b74fc9bb63c260e900ee5af73e66fb1559142d
This commit is contained in:
Roy Luo 2025-01-23 05:22:58 +00:00
parent b70d478bfb
commit e61b680408
5 changed files with 9 additions and 639 deletions
Download patch file Download diff file Expand all files Collapse all files

10
usb/usb/Android.bp
View file

@ -32,7 +32,6 @@ cc_binary {
srcs: [
"service.cpp",
"Usb.cpp",
"UsbDataSessionMonitor.cpp",
],
shared_libs: [
"libbase",
@ -56,18 +55,13 @@ cc_binary {
],
static_libs: [
"libpixelusb",
"libpixelusb-datasession",
"libpixelstats",
"libthermalutils",
"android.hardware.usb.flags-aconfig-c-lib",
"android.hardware.usb.flags-aconfig-cc-lib",
],
export_shared_lib_headers: [
"android.frameworks.stats-V2-ndk",
"pixelatoms-cpp",
],
}
cc_aconfig_library {
name: "android.hardware.usb.flags-aconfig-c-lib",
vendor: true,
aconfig_declarations: "android.hardware.usb.flags-aconfig",
}

8
usb/usb/Usb.cpp
View file

@ -533,9 +533,9 @@ Usb::Usb()
mRoleSwitchLock(PTHREAD_MUTEX_INITIALIZER),
mPartnerLock(PTHREAD_MUTEX_INITIALIZER),
mPartnerUp(false),
mUsbDataSessionMonitor(kUdcUeventRegex, kUdcStatePath, kHost1UeventRegex, kHost1StatePath,
kHost2UeventRegex, kHost2StatePath, kDataRolePath,
std::bind(&updatePortStatus, this)),
mUsbDataSessionMonitor(new UsbDataSessionMonitor(kUdcUeventRegex, kUdcStatePath,
kHost1UeventRegex, kHost1StatePath, kHost2UeventRegex,
kHost2StatePath, kDataRolePath, std::bind(&updatePortStatus, this))),
mOverheat(ZoneInfo(TemperatureType::USB_PORT, kThermalZoneForTrip,
ThrottlingSeverity::CRITICAL),
{ZoneInfo(TemperatureType::UNKNOWN, kThermalZoneForTempReadPrimary,
@ -930,7 +930,7 @@ void queryUsbDataSession(android::hardware::usb::Usb *usb,
std::vector<PortStatus> *currentPortStatus) {
std::vector<ComplianceWarning> warnings;
usb->mUsbDataSessionMonitor.getComplianceWarnings(
usb->mUsbDataSessionMonitor->getComplianceWarnings(
(*currentPortStatus)[0].currentDataRole, &warnings);
(*currentPortStatus)[0].complianceWarnings.insert(
(*currentPortStatus)[0].complianceWarnings.end(),

5
usb/usb/Usb.h
View file

@ -19,9 +19,9 @@
#include <android-base/file.h>
#include <aidl/android/hardware/usb/BnUsb.h>
#include <aidl/android/hardware/usb/BnUsbCallback.h>
#include <pixelusb/UsbDataSessionMonitor.h>
#include <pixelusb/UsbOverheatEvent.h>
#include <utils/Log.h>
#include <UsbDataSessionMonitor.h>
#define UEVENT_MSG_LEN 2048
// The type-c stack waits for 4.5 - 5.5 secs before declaring a port non-pd.
@ -39,6 +39,7 @@ using ::aidl::android::hardware::usb::IUsbCallback;
using ::aidl::android::hardware::usb::PortRole;
using ::android::base::ReadFileToString;
using ::android::base::WriteStringToFile;
using ::android::hardware::google::pixel::usb::UsbDataSessionMonitor;
using ::android::hardware::google::pixel::usb::UsbOverheatEvent;
using ::android::hardware::google::pixel::usb::ZoneInfo;
using ::android::hardware::thermal::V2_0::TemperatureType;
@ -87,7 +88,7 @@ struct Usb : public BnUsb {
bool mPartnerUp;
// Report usb data session event and data incompliance warnings
UsbDataSessionMonitor mUsbDataSessionMonitor;
std::unique_ptr<UsbDataSessionMonitor> mUsbDataSessionMonitor;
// Usb Overheat object for push suez event
UsbOverheatEvent mOverheat;
// Temperature when connected

508
usb/usb/UsbDataSessionMonitor.cpp
View file

@ -1,508 +0,0 @@
/*
* Copyright (C) 2023 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "android.hardware.usb.aidl-service.UsbDataSessionMonitor"
#include "UsbDataSessionMonitor.h"
#include <aidl/android/frameworks/stats/IStats.h>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android_hardware_usb_flags.h>
#include <cutils/uevent.h>
#include <pixelstats/StatsHelper.h>
#include <pixelusb/CommonUtils.h>
#include <sys/epoll.h>
#include <sys/timerfd.h>
#include <utils/Log.h>
#include <regex>
namespace usb_flags = android::hardware::usb::flags;
using aidl::android::frameworks::stats::IStats;
using android::base::ReadFileToString;
using android::hardware::google::pixel::getStatsService;
using android::hardware::google::pixel::reportUsbDataSessionEvent;
using android::hardware::google::pixel::PixelAtoms::VendorUsbDataSessionEvent;
using android::hardware::google::pixel::usb::addEpollFd;
using android::hardware::google::pixel::usb::BuildVendorUsbDataSessionEvent;
namespace aidl {
namespace android {
namespace hardware {
namespace usb {
#define UEVENT_MSG_LEN 2048
#define USB_STATE_MAX_LEN 20
#define DATA_ROLE_MAX_LEN 10
#define WARNING_SURFACE_DELAY_SEC 5
#define ENUM_FAIL_DEFAULT_COUNT_THRESHOLD 3
#define DEVICE_FLAKY_CONNECTION_CONFIGURED_COUNT_THRESHOLD 5
constexpr char kUdcConfigfsPath[] = "/config/usb_gadget/g1/UDC";
constexpr char kNotAttachedState[] = "not attached\n";
constexpr char kAttachedState[] = "attached\n";
constexpr char kPoweredState[] = "powered\n";
constexpr char kDefaultState[] = "default\n";
constexpr char kAddressedState[] = "addressed\n";
constexpr char kConfiguredState[] = "configured\n";
constexpr char kSuspendedState[] = "suspended\n";
const std::set<std::string> kValidStates = {kNotAttachedState, kAttachedState, kPoweredState,
kDefaultState, kAddressedState, kConfiguredState,
kSuspendedState};
static int addEpollFile(const int &epollFd, const std::string &filePath, unique_fd &fileFd) {
struct epoll_event ev;
unique_fd fd(open(filePath.c_str(), O_RDONLY));
if (fd.get() == -1) {
ALOGI("Cannot open %s", filePath.c_str());
return -1;
}
ev.data.fd = fd.get();
ev.events = EPOLLPRI;
if (epoll_ctl(epollFd, EPOLL_CTL_ADD, fd.get(), &ev) != 0) {
ALOGE("epoll_ctl failed; errno=%d", errno);
return -1;
}
fileFd = std::move(fd);
ALOGI("epoll registered %s", filePath.c_str());
return 0;
}
static void removeEpollFile(const int &epollFd, const std::string &filePath, unique_fd &fileFd) {
epoll_ctl(epollFd, EPOLL_CTL_DEL, fileFd.get(), NULL);
fileFd.release();
ALOGI("epoll unregistered %s", filePath.c_str());
}
UsbDataSessionMonitor::UsbDataSessionMonitor(
const std::string &deviceUeventRegex, const std::string &deviceStatePath,
const std::string &host1UeventRegex, const std::string &host1StatePath,
const std::string &host2UeventRegex, const std::string &host2StatePath,
const std::string &dataRolePath, std::function<void()> updatePortStatusCb) {
struct epoll_event ev;
std::string udc;
unique_fd epollFd(epoll_create(8));
if (epollFd.get() == -1) {
ALOGE("epoll_create failed; errno=%d", errno);
abort();
}
unique_fd ueventFd(uevent_open_socket(64 * 1024, true));
if (ueventFd.get() == -1) {
ALOGE("uevent_open_socket failed");
abort();
}
fcntl(ueventFd, F_SETFL, O_NONBLOCK);
if (addEpollFd(epollFd, ueventFd))
abort();
unique_fd timerFd(timerfd_create(CLOCK_BOOTTIME, TFD_NONBLOCK));
if (timerFd.get() == -1) {
ALOGE("create timerFd failed");
abort();
}
if (addEpollFd(epollFd, timerFd))
abort();
if (addEpollFile(epollFd.get(), dataRolePath, mDataRoleFd) != 0) {
ALOGE("monitor data role failed");
abort();
}
/*
* The device state file could be absent depending on the current data role
* and driver architecture. It's ok for addEpollFile to fail here, the file
* will be monitored later when its presence is detected by uevent.
*/
mDeviceState.filePath = deviceStatePath;
mDeviceState.ueventRegex = deviceUeventRegex;
addEpollFile(epollFd.get(), mDeviceState.filePath, mDeviceState.fd);
mHost1State.filePath = host1StatePath;
mHost1State.ueventRegex = host1UeventRegex;
addEpollFile(epollFd.get(), mHost1State.filePath, mHost1State.fd);
mHost2State.filePath = host2StatePath;
mHost2State.ueventRegex = host2UeventRegex;
addEpollFile(epollFd.get(), mHost2State.filePath, mHost2State.fd);
mEpollFd = std::move(epollFd);
mUeventFd = std::move(ueventFd);
mTimerFd = std::move(timerFd);
mUpdatePortStatusCb = updatePortStatusCb;
if (ReadFileToString(kUdcConfigfsPath, &udc) && !udc.empty())
mUdcBind = true;
else
mUdcBind = false;
if (pthread_create(&mMonitor, NULL, this->monitorThread, this)) {
ALOGE("pthread creation failed %d", errno);
abort();
}
ALOGI("feature flag enable_report_usb_data_compliance_warning: %d",
usb_flags::enable_report_usb_data_compliance_warning());
}
UsbDataSessionMonitor::~UsbDataSessionMonitor() {}
void UsbDataSessionMonitor::reportUsbDataSessionMetrics() {
std::vector<VendorUsbDataSessionEvent> events;
if (mDataRole == PortDataRole::DEVICE) {
VendorUsbDataSessionEvent event;
BuildVendorUsbDataSessionEvent(false /* is_host */, boot_clock::now(), mDataSessionStart,
&mDeviceState.states, &mDeviceState.timestamps, &event);
events.push_back(event);
} else if (mDataRole == PortDataRole::HOST) {
bool empty = true;
for (auto e : {&mHost1State, &mHost2State}) {
/*
* Host port will at least get an not_attached event after enablement,
* skip upload if no additional state is added.
*/
if (e->states.size() > 1) {
VendorUsbDataSessionEvent event;
BuildVendorUsbDataSessionEvent(true /* is_host */, boot_clock::now(),
mDataSessionStart, &e->states, &e->timestamps,
&event);
events.push_back(event);
empty = false;
}
}
// All host ports have no state update, upload an event to reflect it
if (empty) {
VendorUsbDataSessionEvent event;
BuildVendorUsbDataSessionEvent(true /* is_host */, boot_clock::now(), mDataSessionStart,
&mHost1State.states, &mHost1State.timestamps, &event);
events.push_back(event);
}
} else {
return;
}
const std::shared_ptr<IStats> stats_client = getStatsService();
if (!stats_client) {
ALOGE("Unable to get AIDL Stats service");
return;
}
for (auto &event : events) {
reportUsbDataSessionEvent(stats_client, event);
}
}
void UsbDataSessionMonitor::getComplianceWarnings(const PortDataRole &role,
std::vector<ComplianceWarning> *warnings) {
if (!usb_flags::enable_report_usb_data_compliance_warning())
return;
if (role != mDataRole || role == PortDataRole::NONE)
return;
for (auto w : mWarningSet) {
warnings->push_back(w);
}
}
void UsbDataSessionMonitor::notifyComplianceWarning() {
if (!usb_flags::enable_report_usb_data_compliance_warning())
return;
if (mUpdatePortStatusCb)
mUpdatePortStatusCb();
}
void UsbDataSessionMonitor::evaluateComplianceWarning() {
std::set<ComplianceWarning> newWarningSet;
int elapsedTimeSec;
elapsedTimeSec =
std::chrono::duration_cast<std::chrono::seconds>(boot_clock::now() - mDataSessionStart)
.count();
if (elapsedTimeSec >= WARNING_SURFACE_DELAY_SEC) {
if (mDataRole == PortDataRole::DEVICE && mUdcBind) {
int configuredCount = std::count(mDeviceState.states.begin(),
mDeviceState.states.end(), kConfiguredState);
int defaultCount =
std::count(mDeviceState.states.begin(), mDeviceState.states.end(), kDefaultState);
if (configuredCount == 0 && defaultCount > ENUM_FAIL_DEFAULT_COUNT_THRESHOLD)
newWarningSet.insert(ComplianceWarning::ENUMERATION_FAIL);
if (configuredCount > DEVICE_FLAKY_CONNECTION_CONFIGURED_COUNT_THRESHOLD)
newWarningSet.insert(ComplianceWarning::FLAKY_CONNECTION);
} else if (mDataRole == PortDataRole::HOST) {
int host1StateCount = mHost1State.states.size();
int host1ConfiguredCount =
std::count(mHost1State.states.begin(), mHost1State.states.end(), kConfiguredState);
int host1DefaultCount =
std::count(mHost1State.states.begin(), mHost1State.states.end(), kDefaultState);
int host2StateCount = mHost2State.states.size();
int host2ConfiguredCount =
std::count(mHost2State.states.begin(), mHost2State.states.end(), kConfiguredState);
int host2DefaultCount =
std::count(mHost2State.states.begin(), mHost2State.states.end(), kDefaultState);
if (host1ConfiguredCount == 0 && host2ConfiguredCount == 0 &&
(host1DefaultCount > ENUM_FAIL_DEFAULT_COUNT_THRESHOLD ||
host2DefaultCount > ENUM_FAIL_DEFAULT_COUNT_THRESHOLD))
newWarningSet.insert(ComplianceWarning::ENUMERATION_FAIL);
if (host1StateCount == 1 && mHost1State.states.front() == kNotAttachedState &&
host2StateCount == 1 && mHost2State.states.front() == kNotAttachedState)
newWarningSet.insert(ComplianceWarning::MISSING_DATA_LINES);
}
}
if (newWarningSet != mWarningSet) {
std::string newWarningString;
for (auto e : newWarningSet) {
newWarningString += toString(e) + " ";
}
ALOGI("Usb data compliance warning changed to: %s", newWarningString.c_str());
mWarningSet = newWarningSet;
notifyComplianceWarning();
}
}
void UsbDataSessionMonitor::clearDeviceStateEvents(struct usbDeviceState *deviceState) {
deviceState->states.clear();
deviceState->timestamps.clear();
}
void UsbDataSessionMonitor::handleDeviceStateEvent(struct usbDeviceState *deviceState) {
int n;
char state[USB_STATE_MAX_LEN] = {0};
lseek(deviceState->fd.get(), 0, SEEK_SET);
n = read(deviceState->fd.get(), &state, USB_STATE_MAX_LEN);
if (kValidStates.find(state) == kValidStates.end()) {
ALOGE("Invalid state %s", state);
return;
}
ALOGI("Update USB device state: %s", state);
deviceState->states.push_back(state);
deviceState->timestamps.push_back(boot_clock::now());
evaluateComplianceWarning();
}
void UsbDataSessionMonitor::setupNewSession() {
mWarningSet.clear();
mDataSessionStart = boot_clock::now();
if (mDataRole == PortDataRole::DEVICE) {
clearDeviceStateEvents(&mDeviceState);
} else if (mDataRole == PortDataRole::HOST) {
clearDeviceStateEvents(&mHost1State);
clearDeviceStateEvents(&mHost2State);
}
if (mDataRole != PortDataRole::NONE) {
struct itimerspec delay = itimerspec();
delay.it_value.tv_sec = WARNING_SURFACE_DELAY_SEC;
int ret = timerfd_settime(mTimerFd.get(), 0, &delay, NULL);
if (ret < 0)
ALOGE("timerfd_settime failed err:%d", errno);
}
}
void UsbDataSessionMonitor::handleDataRoleEvent() {
int n;
PortDataRole newDataRole;
char role[DATA_ROLE_MAX_LEN] = {0};
lseek(mDataRoleFd.get(), 0, SEEK_SET);
n = read(mDataRoleFd.get(), &role, DATA_ROLE_MAX_LEN);
ALOGI("Update USB data role %s", role);
if (!std::strcmp(role, "host")) {
newDataRole = PortDataRole::HOST;
} else if (!std::strcmp(role, "device")) {
newDataRole = PortDataRole::DEVICE;
} else {
newDataRole = PortDataRole::NONE;
}
if (newDataRole != mDataRole) {
// Upload metrics for the last data session that has ended
if (mDataRole == PortDataRole::HOST || (mDataRole == PortDataRole::DEVICE && mUdcBind)) {
reportUsbDataSessionMetrics();
}
mDataRole = newDataRole;
setupNewSession();
}
}
void UsbDataSessionMonitor::updateUdcBindStatus(const std::string &devname) {
std::string function;
bool newUdcBind;
/*
* /sys/class/udc/<udc>/function prints out name of currently running USB gadget driver
* Ref: https://www.kernel.org/doc/Documentation/ABI/stable/sysfs-class-udc
* Empty name string means the udc device is not bound and gadget is pulldown.
*/
if (!ReadFileToString("/sys" + devname + "/function", &function))
return;
if (function == "")
newUdcBind = false;
else
newUdcBind = true;
if (newUdcBind == mUdcBind)
return;
if (mDataRole == PortDataRole::DEVICE) {
if (mUdcBind && !newUdcBind) {
/*
* Gadget soft pulldown: report metrics as the end of a data session and
* re-evaluate compliance warnings to clear existing warnings if any.
*/
reportUsbDataSessionMetrics();
evaluateComplianceWarning();
} else if (!mUdcBind && newUdcBind) {
// Gadget soft pullup: reset and start accounting for a new data session.
setupNewSession();
}
}
ALOGI("Udc bind status changes from %b to %b", mUdcBind, newUdcBind);
mUdcBind = newUdcBind;
}
void UsbDataSessionMonitor::handleUevent() {
char msg[UEVENT_MSG_LEN + 2];
char *cp;
int n;
n = uevent_kernel_multicast_recv(mUeventFd.get(), msg, UEVENT_MSG_LEN);
if (n <= 0)
return;
if (n >= UEVENT_MSG_LEN)
return;
msg[n] = '\0';
msg[n + 1] = '\0';
cp = msg;
while (*cp) {
for (auto e : {&mHost1State, &mHost2State}) {
if (std::regex_search(cp, std::regex(e->ueventRegex))) {
if (!strncmp(cp, "bind@", strlen("bind@"))) {
addEpollFile(mEpollFd.get(), e->filePath, e->fd);
} else if (!strncmp(cp, "unbind@", strlen("unbind@"))) {
removeEpollFile(mEpollFd.get(), e->filePath, e->fd);
}
}
}
// TODO: support bind@ unbind@ to detect dynamically allocated udc device
if (std::regex_search(cp, std::regex(mDeviceState.ueventRegex))) {
if (!strncmp(cp, "change@", strlen("change@"))) {
char *devname = cp + strlen("change@");
/*
* Udc device emits a KOBJ_CHANGE event on configfs driver bind and unbind.
* TODO: upstream udc driver emits KOBJ_CHANGE event BEFORE unbind is actually
* executed. Add a short delay to get the correct state while working on a fix
* upstream.
*/
usleep(50000);
updateUdcBindStatus(devname);
}
}
/* advance to after the next \0 */
while (*cp++) {
}
}
}
void UsbDataSessionMonitor::handleTimerEvent() {
int byteRead;
uint64_t numExpiration;
byteRead = read(mTimerFd.get(), &numExpiration, sizeof(numExpiration));
if (byteRead != sizeof(numExpiration)) {
ALOGE("incorrect read size");
}
if (numExpiration != 1) {
ALOGE("incorrect expiration count");
}
evaluateComplianceWarning();
}
void *UsbDataSessionMonitor::monitorThread(void *param) {
UsbDataSessionMonitor *monitor = (UsbDataSessionMonitor *)param;
struct epoll_event events[64];
int nevents = 0;
while (true) {
nevents = epoll_wait(monitor->mEpollFd.get(), events, 64, -1);
if (nevents == -1) {
if (errno == EINTR)
continue;
ALOGE("usb epoll_wait failed; errno=%d", errno);
break;
}
for (int n = 0; n < nevents; ++n) {
if (events[n].data.fd == monitor->mUeventFd.get()) {
monitor->handleUevent();
} else if (events[n].data.fd == monitor->mTimerFd.get()) {
monitor->handleTimerEvent();
} else if (events[n].data.fd == monitor->mDataRoleFd.get()) {
monitor->handleDataRoleEvent();
} else if (events[n].data.fd == monitor->mDeviceState.fd.get()) {
monitor->handleDeviceStateEvent(&monitor->mDeviceState);
} else if (events[n].data.fd == monitor->mHost1State.fd.get()) {
monitor->handleDeviceStateEvent(&monitor->mHost1State);
} else if (events[n].data.fd == monitor->mHost2State.fd.get()) {
monitor->handleDeviceStateEvent(&monitor->mHost2State);
}
}
}
return NULL;
}
} // namespace usb
} // namespace hardware
} // namespace android
} // namespace aidl

117
usb/usb/UsbDataSessionMonitor.h
View file

@ -1,117 +0,0 @@
/*
* Copyright (C) 2023 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <aidl/android/hardware/usb/ComplianceWarning.h>
#include <aidl/android/hardware/usb/PortDataRole.h>
#include <android-base/chrono_utils.h>
#include <android-base/unique_fd.h>
#include <set>
#include <string>
#include <vector>
namespace aidl {
namespace android {
namespace hardware {
namespace usb {
using ::aidl::android::hardware::usb::ComplianceWarning;
using ::aidl::android::hardware::usb::PortDataRole;
using ::android::base::boot_clock;
using ::android::base::unique_fd;
/*
* UsbDataSessionMonitor monitors the usb device state sysfs of 3 different usb devices
* including device mode (udc), host mode high-speed port and host mode super-speed port. It
* reports Suez metrics for each data session and also provides API to query the compliance
* warnings detected in the current usb data session.
*/
class UsbDataSessionMonitor {
public:
/*
* The host mode high-speed port and super-speed port can be assigned to either host1 or
* host2 without affecting functionality.
*
* UeventRegex: name regex of the device that's being monitored. The regex is matched against
* uevent to detect dynamic creation/deletion/change of the device.
* StatePath: usb device state sysfs path of the device, monitored by epoll.
* dataRolePath: path to the usb data role sysfs, monitored by epoll.
* updatePortStatusCb: the callback is invoked when the compliance warings changes.
*/
UsbDataSessionMonitor(const std::string &deviceUeventRegex, const std::string &deviceStatePath,
const std::string &host1UeventRegex, const std::string &host1StatePath,
const std::string &host2UeventRegex, const std::string &host2StatePath,
const std::string &dataRolePath,
std::function<void()> updatePortStatusCb);
~UsbDataSessionMonitor();
// Returns the compliance warnings detected in the current data session.
void getComplianceWarnings(const PortDataRole &role, std::vector<ComplianceWarning> *warnings);
private:
struct usbDeviceState {
unique_fd fd;
std::string filePath;
std::string ueventRegex;
// Usb device states reported by state sysfs
std::vector<std::string> states;
// Timestamps of when the usb device states were captured
std::vector<boot_clock::time_point> timestamps;
};
static void *monitorThread(void *param);
void handleUevent();
void handleTimerEvent();
void handleDataRoleEvent();
void handleDeviceStateEvent(struct usbDeviceState *deviceState);
void clearDeviceStateEvents(struct usbDeviceState *deviceState);
void setupNewSession();
void reportUsbDataSessionMetrics();
void evaluateComplianceWarning();
void notifyComplianceWarning();
void updateUdcBindStatus(const std::string &devname);
pthread_t mMonitor;
unique_fd mEpollFd;
unique_fd mUeventFd;
unique_fd mTimerFd;
unique_fd mDataRoleFd;
struct usbDeviceState mDeviceState;
struct usbDeviceState mHost1State;
struct usbDeviceState mHost2State;
std::set<ComplianceWarning> mWarningSet;
// Callback function to notify the caller when there's a change in compliance warnings.
std::function<void()> mUpdatePortStatusCb;
/*
* Cache relevant info for a USB data session when one starts, including
* the data role and the time when the session starts.
*/
PortDataRole mDataRole;
boot_clock::time_point mDataSessionStart;
/*
* In gadget mode: this indicates whether the udc device is bound to the configfs driver, which
* is done by userspace writing the udc device name to /config/usb_gadget/g1/UDC. When unbound,
* the gadget is in soft pulldown state and is expected not to enumerate. During gadget
* function switch, the udc device usually go through unbind and bind.
*/
bool mUdcBind;
};
} // namespace usb
} // namespace hardware
} // namespace android
} // namespace aidl