15738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project/****************************************************************************** 25738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 39891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson * Copyright (C) 2014 Google, Inc. 45738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 55738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 65738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * you may not use this file except in compliance with the License. 75738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * You may obtain a copy of the License at: 85738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 95738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 105738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 115738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 125738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 135738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 145738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * See the License for the specific language governing permissions and 155738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * limitations under the License. 165738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 175738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project ******************************************************************************/ 185738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 19985d4b6986b787839ba72470f96be841f7721a17Marie Janssen#define LOG_TAG "bt_snoop" 20985d4b6986b787839ba72470f96be841f7721a17Marie Janssen 213e59b5b6f2ce1295e3e2711afcd2cdf0dd7e22b6Etan Cohen#include <arpa/inet.h> 22a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati#include <assert.h> 23a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati#include <errno.h> 245738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <fcntl.h> 2512265e39b511f28425236b0dc97c78e7d837304bPavlin Radoslavov#include <inttypes.h> 26933926c92e1378cc76bc9c149107e670c4872d4eScott James Remnant#include <limits.h> 27933926c92e1378cc76bc9c149107e670c4872d4eScott James Remnant#include <netinet/in.h> 28611f3abf1c12a9f568114e46a21e70c74eaf6a60Sharvil Nanavati#include <stdbool.h> 29a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati#include <stdio.h> 30a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati#include <stdlib.h> 313e59b5b6f2ce1295e3e2711afcd2cdf0dd7e22b6Etan Cohen#include <string.h> 325738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <sys/stat.h> 33a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati#include <sys/time.h> 345738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <unistd.h> 355738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 36db554581079863974af8e1289646f5deea6fc044Marie Janssen#include "bt_types.h" 3789f5e411d9ef31436741288a2267e46dd744e273Andre Eisenbach#include "hci/include/btsnoop.h" 3889f5e411d9ef31436741288a2267e46dd744e273Andre Eisenbach#include "hci/include/btsnoop_mem.h" 39fbbd42b1fc1aae7a106f46275ab1fd86452cce78Zach Johnson#include "hci_layer.h" 4044802768c447ab480d4227b3a852a97d923b816dSharvil Nanavati#include "osi/include/log.h" 419891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson#include "stack_config.h" 425738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 43611f3abf1c12a9f568114e46a21e70c74eaf6a60Sharvil Nanavatitypedef enum { 44611f3abf1c12a9f568114e46a21e70c74eaf6a60Sharvil Nanavati kCommandPacket = 1, 45611f3abf1c12a9f568114e46a21e70c74eaf6a60Sharvil Nanavati kAclPacket = 2, 46611f3abf1c12a9f568114e46a21e70c74eaf6a60Sharvil Nanavati kScoPacket = 3, 47611f3abf1c12a9f568114e46a21e70c74eaf6a60Sharvil Nanavati kEventPacket = 4 48a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati} packet_type_t; 495738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 50a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati// Epoch in microseconds since 01/01/0000. 51a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavatistatic const uint64_t BTSNOOP_EPOCH_DELTA = 0x00dcddb30f2f8000ULL; 525738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 539891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic const stack_config_t *stack_config; 54f1d68e95f34921361dced60b1b53e3fef8401f03Kim Schulz 559891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic int logfile_fd = INVALID_FD; 569891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic bool module_started; 579891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic bool is_logging; 589891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic bool logging_enabled_via_api; 599891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 609891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson// TODO(zachoverflow): merge btsnoop and btsnoop_net together 61a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavativoid btsnoop_net_open(); 62a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavativoid btsnoop_net_close(); 63a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavativoid btsnoop_net_write(const void *data, size_t length); 645738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 659891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic void btsnoop_write_packet(packet_type_t type, const uint8_t *packet, bool is_received); 669891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic void update_logging(); 679891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 689891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson// Module lifecycle functions 699891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 709891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic future_t *start_up(void) { 719891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson module_started = true; 729891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson update_logging(); 739891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 749891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson return NULL; 759891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson} 769891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 779891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic future_t *shut_down(void) { 789891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson module_started = false; 799891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson update_logging(); 809891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 819891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson return NULL; 829891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson} 839891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 841f81b64b337832452e9ba1f530e612a685aebb82Ian CoolidgeEXPORT_SYMBOL const module_t btsnoop_module = { 859891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson .name = BTSNOOP_MODULE, 869891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson .init = NULL, 879891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson .start_up = start_up, 889891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson .shut_down = shut_down, 899891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson .clean_up = NULL, 909891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson .dependencies = { 919891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson STACK_CONFIG_MODULE, 929891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson NULL 939891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson } 949891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson}; 959891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 969891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson// Interface functions 979891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 989891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic void set_api_wants_to_log(bool value) { 999891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson logging_enabled_via_api = value; 1009891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson update_logging(); 1019891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson} 1029891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 1039891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic void capture(const BT_HDR *buffer, bool is_received) { 1049891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson const uint8_t *p = buffer->data + buffer->offset; 1059891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 10689f5e411d9ef31436741288a2267e46dd744e273Andre Eisenbach btsnoop_mem_capture(buffer); 10789f5e411d9ef31436741288a2267e46dd744e273Andre Eisenbach 1089891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson if (logfile_fd == INVALID_FD) 1099891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson return; 1109891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 1119891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson switch (buffer->event & MSG_EVT_MASK) { 1129891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson case MSG_HC_TO_STACK_HCI_EVT: 1139891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson btsnoop_write_packet(kEventPacket, p, false); 1149891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson break; 1159891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson case MSG_HC_TO_STACK_HCI_ACL: 1169891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson case MSG_STACK_TO_HC_HCI_ACL: 1179891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson btsnoop_write_packet(kAclPacket, p, is_received); 1189891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson break; 1199891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson case MSG_HC_TO_STACK_HCI_SCO: 1209891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson case MSG_STACK_TO_HC_HCI_SCO: 1219891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson btsnoop_write_packet(kScoPacket, p, is_received); 1229891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson break; 1239891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson case MSG_STACK_TO_HC_HCI_CMD: 1249891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson btsnoop_write_packet(kCommandPacket, p, true); 1259891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson break; 1269891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson } 1279891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson} 1289891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 1299891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic const btsnoop_t interface = { 1309891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson set_api_wants_to_log, 1319891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson capture 1329891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson}; 1339891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 1349891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonconst btsnoop_t *btsnoop_get_interface() { 1359891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson stack_config = stack_config_get_interface(); 1369891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson return &interface; 1379891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson} 1389891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 1399891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson// Internal functions 1409891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 1411192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestrostatic uint64_t btsnoop_timestamp(void) { 1421192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestro struct timeval tv; 1431192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestro gettimeofday(&tv, NULL); 1441192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestro 1451192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestro // Timestamp is in microseconds. 1461192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestro uint64_t timestamp = tv.tv_sec * 1000 * 1000LL; 1471192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestro timestamp += tv.tv_usec; 1481192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestro timestamp += BTSNOOP_EPOCH_DELTA; 1491192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestro return timestamp; 1501192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestro} 1511192df9f7e709b9d9508ac86cbf5099a3a7ffa0eTucker Sylvestro 1529891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnsonstatic void update_logging() { 1539891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson bool should_log = module_started && 1549891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson (logging_enabled_via_api || stack_config->get_btsnoop_turned_on()); 1559891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 1569891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson if (should_log == is_logging) 1579891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson return; 1589891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 1599891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson is_logging = should_log; 1609891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson if (should_log) { 1619891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson btsnoop_net_open(); 1629891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 16304bb236d873005ccb5950cb8e8f1f348499e032eZach Johnson const char *log_path = stack_config->get_btsnoop_log_path(); 16404bb236d873005ccb5950cb8e8f1f348499e032eZach Johnson 16504bb236d873005ccb5950cb8e8f1f348499e032eZach Johnson // Save the old log if configured to do so 16604bb236d873005ccb5950cb8e8f1f348499e032eZach Johnson if (stack_config->get_btsnoop_should_save_last()) { 16704bb236d873005ccb5950cb8e8f1f348499e032eZach Johnson char last_log_path[PATH_MAX]; 16812265e39b511f28425236b0dc97c78e7d837304bPavlin Radoslavov snprintf(last_log_path, PATH_MAX, "%s.%" PRIu64, log_path, 16912265e39b511f28425236b0dc97c78e7d837304bPavlin Radoslavov btsnoop_timestamp()); 17004bb236d873005ccb5950cb8e8f1f348499e032eZach Johnson if (!rename(log_path, last_log_path) && errno != ENOENT) 171db554581079863974af8e1289646f5deea6fc044Marie Janssen LOG_ERROR(LOG_TAG, "%s unable to rename '%s' to '%s': %s", __func__, log_path, last_log_path, strerror(errno)); 17204bb236d873005ccb5950cb8e8f1f348499e032eZach Johnson } 1739891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 17404bb236d873005ccb5950cb8e8f1f348499e032eZach Johnson logfile_fd = open(log_path, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH); 1759891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson if (logfile_fd == INVALID_FD) { 176db554581079863974af8e1289646f5deea6fc044Marie Janssen LOG_ERROR(LOG_TAG, "%s unable to open '%s': %s", __func__, log_path, strerror(errno)); 17704bb236d873005ccb5950cb8e8f1f348499e032eZach Johnson is_logging = false; 1789891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson return; 1799891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson } 1809891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 1819891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson write(logfile_fd, "btsnoop\0\0\0\0\1\0\0\x3\xea", 16); 1829891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson } else { 1839891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson if (logfile_fd != INVALID_FD) 1849891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson close(logfile_fd); 1859891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 1869891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson logfile_fd = INVALID_FD; 1879891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson btsnoop_net_close(); 1889891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson } 1899891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson} 1909891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson 191611f3abf1c12a9f568114e46a21e70c74eaf6a60Sharvil Nanavatistatic void btsnoop_write(const void *data, size_t length) { 1929891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson if (logfile_fd != INVALID_FD) 1939891f32471b5c01cf58e4d7dadb04cb3024a9a88Zach Johnson write(logfile_fd, data, length); 194a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati 195a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati btsnoop_net_write(data, length); 196a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati} 197a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati 198a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavatistatic void btsnoop_write_packet(packet_type_t type, const uint8_t *packet, bool is_received) { 199227f6b08abb4e786a8951dde128388cd025ee63fChris Manton int length_he = 0; 200a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati int length; 201a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati int flags; 202a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati int drops = 0; 203a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati switch (type) { 204a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati case kCommandPacket: 205a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati length_he = packet[2] + 4; 206a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati flags = 2; 207a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati break; 208a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati case kAclPacket: 209a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati length_he = (packet[3] << 8) + packet[2] + 5; 210a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati flags = is_received; 211a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati break; 212a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati case kScoPacket: 213a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati length_he = packet[2] + 4; 214a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati flags = is_received; 215a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati break; 216a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati case kEventPacket: 217a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati length_he = packet[1] + 3; 218a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati flags = 3; 219a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati break; 220a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati } 221a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati 222a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati uint64_t timestamp = btsnoop_timestamp(); 223a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati uint32_t time_hi = timestamp >> 32; 224a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati uint32_t time_lo = timestamp & 0xFFFFFFFF; 225a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati 226a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati length = htonl(length_he); 227a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati flags = htonl(flags); 228a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati drops = htonl(drops); 229a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati time_hi = htonl(time_hi); 230a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati time_lo = htonl(time_lo); 231a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati 232a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati btsnoop_write(&length, 4); 233a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati btsnoop_write(&length, 4); 234a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati btsnoop_write(&flags, 4); 235a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati btsnoop_write(&drops, 4); 236a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati btsnoop_write(&time_hi, 4); 237a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati btsnoop_write(&time_lo, 4); 238a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati btsnoop_write(&type, 1); 239a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati btsnoop_write(packet, length_he - 1); 240a7d7eb78b826cde99adb67fb7078aca85ea61da3Sharvil Nanavati} 241