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Commit cd6fa5d0 authored by Jakub Pawłowski's avatar Jakub Pawłowski Committed by Automerger Merge Worker
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Merge "Wait for remote version information, before deciding Robust Cache... 

Merge "Wait for remote version information, before deciding Robust Cache support" into main am: 5ba9f81a am: 2a44ec68 am: da96c711

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2770736



Change-Id: Ie447dea1cb1600b3b26d57f3063429a5586d9d23
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents 52f2f6a1 da96c711

system/bta/gatt/bta_gattc_act.cc

+68 −16
Original line number Diff line number Diff line
@@ -808,6 +808,10 @@ void bta_gattc_start_discover_internal(tBTA_GATTC_CLCB* p_clcb) { 
    p_clcb->disc_active = true;

}



static void bta_gattc_continue_with_version_and_cache_known(

    tBTA_GATTC_CLCB* p_clcb, RobustCachingSupport cache_support,

    bool is_svc_chg);



/** Start a discovery on server */

void bta_gattc_start_discover(tBTA_GATTC_CLCB* p_clcb,

                              UNUSED_ATTR const tBTA_GATTC_DATA* p_data) {
@@ -839,9 +843,65 @@ void bta_gattc_start_discover(tBTA_GATTC_CLCB* p_clcb, 
    p_clcb->p_srcb->srvc_hdl_chg = false;

    p_clcb->p_srcb->update_count = 0;

    p_clcb->p_srcb->state = BTA_GATTC_SERV_DISC_ACT;

    p_clcb->p_srcb->disc_blocked_waiting_on_version = false;



    auto cache_support =

        GetRobustCachingSupport(p_clcb, p_clcb->p_srcb->gatt_database);

    if (cache_support == RobustCachingSupport::W4_REMOTE_VERSION) {

      LOG_INFO(

          "Pausing service discovery till remote version is read conn_id:%d",

          p_clcb->bta_conn_id);

      p_clcb->p_srcb->disc_blocked_waiting_on_version = true;

      p_clcb->p_srcb->blocked_conn_id = p_clcb->bta_conn_id;

      return;

    }



    bta_gattc_continue_with_version_and_cache_known(p_clcb, cache_support,

                                                    is_svc_chg);

  }

  /* pending operation, wait until it finishes */

  else {

    p_clcb->auto_update = BTA_GATTC_DISC_WAITING;



    if (p_clcb->p_srcb->state == BTA_GATTC_SERV_IDLE)

      p_clcb->state = BTA_GATTC_CONN_ST; /* set clcb state */

  }

}



void bta_gattc_continue_discovery_if_needed(const RawAddress& bd_addr,

                                            uint16_t acl_handle) {

  tBTA_GATTC_SERV* p_srcb = bta_gattc_find_srvr_cache(bd_addr);

  if (!p_srcb || !p_srcb->disc_blocked_waiting_on_version) {

    return;

  }



  uint16_t conn_id = p_srcb->blocked_conn_id;



  p_srcb->disc_blocked_waiting_on_version = false;

  p_srcb->blocked_conn_id = 0;



  LOG_INFO("Received remote version, continue service discovery for %s",

           ADDRESS_TO_LOGGABLE_CSTR(bd_addr));



    if (GetRobustCachingSupport(p_clcb, p_clcb->p_srcb->gatt_database) ==

        RobustCachingSupport::UNSUPPORTED) {

  tBTA_GATTC_CLCB* p_clcb = bta_gattc_find_clcb_by_conn_id(conn_id);



  if (!p_clcb) {

    LOG_ERROR("Can't find CLCB to continue service discovery, id:%d", conn_id);

    return;

  }



  bool is_svc_chg = p_clcb->p_srcb->srvc_hdl_chg;



  auto cache_support =

      GetRobustCachingSupport(p_clcb, p_clcb->p_srcb->gatt_database);

  bta_gattc_continue_with_version_and_cache_known(p_clcb, cache_support,

                                                  is_svc_chg);

}



void bta_gattc_continue_with_version_and_cache_known(

    tBTA_GATTC_CLCB* p_clcb, RobustCachingSupport cache_support,

    bool is_svc_chg) {

  if (cache_support == RobustCachingSupport::UNSUPPORTED) {

    // Skip initial DB hash read if we have strong reason (due to interop,

    // or a prior discovery) to believe that it is unsupported.

    p_clcb->p_srcb->srvc_hdl_db_hash = false;
@@ -852,21 +912,13 @@ void bta_gattc_start_discover(tBTA_GATTC_CLCB* p_clcb, 
      p_clcb->p_srcb->srvc_hdl_db_hash &&

      bta_gattc_read_db_hash(p_clcb, is_svc_chg)) {

    LOG(INFO) << __func__

                << ": pending service discovery, read db hash first";

              << ": pending service discovery, read db hash first conn_id:"

              << loghex(p_clcb->bta_conn_id);

    p_clcb->p_srcb->srvc_hdl_db_hash = false;

    return;

  }



  bta_gattc_start_discover_internal(p_clcb);

}

  /* pending operation, wait until it finishes */

  else {

    p_clcb->auto_update = BTA_GATTC_DISC_WAITING;



    if (p_clcb->p_srcb->state == BTA_GATTC_SERV_IDLE)

      p_clcb->state = BTA_GATTC_CONN_ST; /* set clcb state */

  }

}



/** discovery on server is finished */

void bta_gattc_disc_cmpl(tBTA_GATTC_CLCB* p_clcb,

system/bta/gatt/bta_gattc_cache.cc

+6 −0
Original line number Diff line number Diff line
@@ -164,6 +164,12 @@ RobustCachingSupport GetRobustCachingSupport(const tBTA_GATTC_CLCB* p_clcb, 
    return RobustCachingSupport::UNSUPPORTED;

  }



  if (p_clcb->transport == BT_TRANSPORT_LE &&

      !BTM_IsRemoteVersionReceived(p_clcb->bda)) {

    LOG_INFO("version info is not ready yet");

    return RobustCachingSupport::W4_REMOTE_VERSION;

  }



  // This is workaround for the embedded devices being already on the market

  // and having a serious problem with handle Read By Type with

  // GATT_UUID_DATABASE_HASH. With this workaround, Android will assume that

system/bta/gatt/bta_gattc_int.h

+4 −0
Original line number Diff line number Diff line
@@ -232,6 +232,9 @@ typedef struct { 
  uint16_t attr_index;  /* cahce NV saving/loading attribute index */



  uint16_t mtu;



  bool disc_blocked_waiting_on_version;

  uint16_t blocked_conn_id;

} tBTA_GATTC_SERV;



#ifndef BTA_GATTC_NOTIF_REG_MAX
@@ -480,6 +483,7 @@ enum class RobustCachingSupport { 
  UNSUPPORTED,

  SUPPORTED,

  UNKNOWN,

  W4_REMOTE_VERSION

};

RobustCachingSupport GetRobustCachingSupport(const tBTA_GATTC_CLCB* p_clcb,

                                             const gatt::Database& db);

system/stack/acl/acl.cc

+1 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ 
#include "types/raw_address.h"



void tACL_CONN::Reset() {

  remote_version_received = false;

  memset(peer_le_features, 0, sizeof(peer_le_features));

  peer_le_features_valid = false;

  memset(peer_lmp_feature_pages, 0, sizeof(peer_lmp_feature_pages));

system/stack/acl/acl.h

+3 −0
Original line number Diff line number Diff line
@@ -180,6 +180,9 @@ struct tACL_CONN { 
  BD_FEATURES peer_lmp_feature_pages[HCI_EXT_FEATURES_PAGE_MAX + 1];

  bool peer_lmp_feature_valid[HCI_EXT_FEATURES_PAGE_MAX + 1];



  /* Whether "Read Remote Version Information Complete" was received */

  bool remote_version_received{false};



  RawAddress active_remote_addr;

  tBLE_ADDR_TYPE active_remote_addr_type;