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Commit f8a1eb78 authored by More Kuo's avatar More Kuo
Browse files

DO NOT MERGE: Enable Qualcomm 3804 log in snoop log with base 64 format 

Bug: 203015591
Tag: #feature
Test: manually checked content of partial btsnoop log
Ignore-AOSP-First: Enhanced log
Change-Id: I8e0e85b1493332405147f572cceaa24c56771a3d
parent 2cf0e4c8

system/btif/src/btif_debug_btsnoop.cc

+19 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include "btif/include/btif_debug_btsnoop.h"

#include "hci/include/btsnoop_mem.h"

#include "internal_include/bt_target.h"

#include "osi/include/properties.h"

#include "osi/include/ringbuffer.h"



#define REDUCE_HCI_TYPE_TO_SIGNIFICANT_BITS(type) ((type) >> 8)
@@ -38,6 +39,7 @@ static const size_t BTSNOOP_MEM_BUFFER_SIZE = (256 * 1024); 
static std::mutex buffer_mutex;

static ringbuffer_t* buffer = NULL;

static uint64_t last_timestamp_ms = 0;

static bool qualcomm_debug_log_enable = false;



static size_t btsnoop_calculate_packet_length(uint16_t type,

                                              const uint8_t* data,
@@ -80,6 +82,9 @@ static size_t btsnoop_calculate_packet_length(uint16_t type, 
  static const size_t L2CAP_CID_OFFSET = (HCI_ACL_HEADER_SIZE + 2);

  static const uint16_t L2CAP_SIGNALING_CID = 0x0001;



  static const size_t HCI_ACL_HANDLE_OFFSET = 0;

  static const uint16_t QUALCOMM_DEBUG_LOG_HANDLE = 0xedc;



  // Maximum amount of ACL data to log.

  // Enough for an RFCOMM frame up to the frame check;

  // not enough for a HID report or audio data.
@@ -101,11 +106,19 @@ static size_t btsnoop_calculate_packet_length(uint16_t type, 
      if (length > len_hci_acl) {

        uint16_t l2cap_cid =

            data[L2CAP_CID_OFFSET] | (data[L2CAP_CID_OFFSET + 1] << 8);

        uint16_t hci_acl_packet_handle = data[HCI_ACL_HANDLE_OFFSET] |

                                         (data[HCI_ACL_HANDLE_OFFSET + 1] << 8);

        hci_acl_packet_handle &= 0x0FFF;



        if (l2cap_cid == L2CAP_SIGNALING_CID) {

          // For the signaling CID, take the full packet.

          // That way, the PSM setup is captured, allowing decoding of PSMs down

          // the road.

          return length;

        } else if (qualcomm_debug_log_enable &&

                   hci_acl_packet_handle == QUALCOMM_DEBUG_LOG_HANDLE) {

          // For the enhanced controller debug log, take the full packet.

          return length;

        } else {

          // Otherwise, return as much as we reasonably can

          len_hci_acl = MAX_HCI_ACL_LEN;
@@ -131,6 +144,12 @@ static size_t btsnoop_calculate_packet_length(uint16_t type, 
void btif_debug_btsnoop_init(void) {

  if (buffer == NULL) buffer = ringbuffer_init(BTSNOOP_MEM_BUFFER_SIZE);

  btsnoop_mem_set_callback(btsnoop_cb);



  char value[PROPERTY_VALUE_MAX] = {0};

  int ret = osi_property_get("ro.soc.manufacturer", value, "");

  if (ret > 0 && strncmp(value, "Qualcomm", ret) == 0) {

    qualcomm_debug_log_enable = true;

  }

}



#ifndef OS_ANDROID