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Commit bdf6d5ac authored by Hansong Zhang's avatar Hansong Zhang Committed by Automerger Merge Worker
Browse files

Move rs_disc_pending from security to ACL am: 65b05a9b am: 443a931f am: 063b1888 

Original change: https://android-review.googlesource.com/c/platform/system/bt/+/1480394

Change-Id: Ia1b4fc5f5170dab1798904e5623d18ebf6586b54
parents 728a449e 063b1888

system/stack/acl/acl.h

+5 −0
Original line number Diff line number Diff line
@@ -104,6 +104,11 @@ typedef struct { 
  uint8_t lmp_version;

  uint8_t switch_role_failed_attempts;



#define BTM_SEC_RS_NOT_PENDING 0 /* Role Switch not in progress */

#define BTM_SEC_RS_PENDING 1     /* Role Switch in progress */

#define BTM_SEC_DISC_PENDING 2   /* Disconnect is pending */

  uint8_t rs_disc_pending = BTM_SEC_RS_NOT_PENDING;



 private:

  uint8_t switch_role_state_;

system/stack/acl/btm_acl.cc

+33 −25
Original line number Diff line number Diff line
@@ -586,7 +586,7 @@ tBTM_STATUS BTM_SwitchRole(const RawAddress& remote_bd_addr, uint8_t new_role) { 
    } else {

      btsnd_hcic_switch_role(remote_bd_addr, new_role);

      p_acl->set_switch_role_in_progress();

      if (p_dev_rec) p_dev_rec->rs_disc_pending = BTM_SEC_RS_PENDING;

      p_acl->rs_disc_pending = BTM_SEC_RS_PENDING;

    }

  }
@@ -609,7 +609,6 @@ void btm_acl_encrypt_change(uint16_t handle, uint8_t status, 
                            uint8_t encr_enable) {

  tACL_CONN* p;

  uint8_t xx;

  tBTM_SEC_DEV_REC* p_dev_rec;



  xx = btm_handle_to_acl_index(handle);

  /* don't assume that we can never get a bad hci_handle */
@@ -630,9 +629,7 @@ void btm_acl_encrypt_change(uint16_t handle, uint8_t status, 
    }



    btsnd_hcic_switch_role(p->remote_addr, (uint8_t)!p->link_role);

    p_dev_rec = btm_find_dev(p->remote_addr);

    if (p_dev_rec != NULL) p_dev_rec->rs_disc_pending = BTM_SEC_RS_PENDING;



    p->rs_disc_pending = BTM_SEC_RS_PENDING;

  }

  /* Finished enabling Encryption after role switch */

  else if (p->is_switch_role_encryption_on()) {
@@ -646,16 +643,11 @@ void btm_acl_encrypt_change(uint16_t handle, uint8_t status, 


    /* If a disconnect is pending, issue it now that role switch has completed

     */

    p_dev_rec = btm_find_dev(p->remote_addr);

    if (p_dev_rec != NULL) {

      if (p_dev_rec->rs_disc_pending == BTM_SEC_DISC_PENDING) {

    if (p->rs_disc_pending == BTM_SEC_DISC_PENDING) {

      LOG_WARN("Issuing delayed HCI_Disconnect!!!");

      btsnd_hcic_disconnect(handle, HCI_ERR_PEER_USER);

    }

      LOG_WARN("tBTM_SEC_DEV:0x%x rs_disc_pending=%d", PTR_TO_UINT(p_dev_rec),

               p_dev_rec->rs_disc_pending);

      p_dev_rec->rs_disc_pending = BTM_SEC_RS_NOT_PENDING; /* reset flag */

    }

    p->rs_disc_pending = BTM_SEC_RS_NOT_PENDING; /* reset flag */

  }

}
@@ -1463,15 +1455,12 @@ void StackAclBtmAcl::btm_acl_role_changed(tHCI_STATUS hci_status, 
  BTA_dm_report_role_change(bd_addr, new_role, hci_status);



  /* If a disconnect is pending, issue it now that role switch has completed */

  tBTM_SEC_DEV_REC* p_dev_rec = btm_find_dev(bd_addr);

  if (p_dev_rec != nullptr) {

    if (p_dev_rec->rs_disc_pending == BTM_SEC_DISC_PENDING) {

  if (p_acl->rs_disc_pending == BTM_SEC_DISC_PENDING) {

    LOG_WARN("peer %s Issuing delayed HCI_Disconnect!!!",

             bd_addr.ToString().c_str());

      btsnd_hcic_disconnect(p_dev_rec->hci_handle, HCI_ERR_PEER_USER);

    }

    p_dev_rec->rs_disc_pending = BTM_SEC_RS_NOT_PENDING; /* reset flag */

    btsnd_hcic_disconnect(p_acl->hci_handle, HCI_ERR_PEER_USER);

  }

  p_acl->rs_disc_pending = BTM_SEC_RS_NOT_PENDING; /* reset flag */

}



void btm_acl_role_changed(tHCI_STATUS hci_status, const RawAddress& bd_addr,
@@ -2143,12 +2132,14 @@ void btm_read_link_quality_complete(uint8_t* p) { 
tBTM_STATUS btm_remove_acl(const RawAddress& bd_addr, tBT_TRANSPORT transport) {

  uint16_t hci_handle = BTM_GetHCIConnHandle(bd_addr, transport);

  tBTM_STATUS status = BTM_SUCCESS;

  tACL_CONN* p_acl = internal_.btm_bda_to_acl(bd_addr, transport);

  if (p_acl == nullptr) return BTM_UNKNOWN_ADDR;



  tBTM_SEC_DEV_REC* p_dev_rec = btm_find_dev(bd_addr);



  /* Role Switch is pending, postpone until completed */

  if (p_dev_rec && (p_dev_rec->rs_disc_pending == BTM_SEC_RS_PENDING)) {

    p_dev_rec->rs_disc_pending = BTM_SEC_DISC_PENDING;

  if (p_dev_rec && (p_acl->rs_disc_pending == BTM_SEC_RS_PENDING)) {

    p_acl->rs_disc_pending = BTM_SEC_DISC_PENDING;

  } else /* otherwise can disconnect right away */

  {

    if (hci_handle != HCI_INVALID_HANDLE && p_dev_rec &&
@@ -2208,7 +2199,7 @@ void btm_cont_rswitch(tACL_CONN* p, tBTM_SEC_DEV_REC* p_dev_rec) { 
    {

      if (p->is_switch_role_mode_change()) {

        p->set_switch_role_in_progress();

        if (p_dev_rec) p_dev_rec->rs_disc_pending = BTM_SEC_RS_PENDING;

        p->rs_disc_pending = BTM_SEC_RS_PENDING;

        btsnd_hcic_switch_role(p->remote_addr, (uint8_t)!p->link_role);

      }

    }
@@ -2849,6 +2840,23 @@ void acl_disconnect(const RawAddress& bd_addr, tBT_TRANSPORT transport, 
  btsnd_hcic_disconnect(p_acl->hci_handle, reason);

}



void acl_disconnect_after_role_switch(uint16_t conn_handle, uint16_t reason) {

  tACL_CONN* p_acl = internal_.acl_get_connection_from_handle(conn_handle);



  /* If a role switch is in progress, delay the HCI Disconnect to avoid

   * controller problem */

  if (p_acl->rs_disc_pending == BTM_SEC_RS_PENDING) {

    BTM_TRACE_DEBUG(

        "RS in progress - Set DISC Pending flag in btm_sec_send_hci_disconnect "

        "to delay disconnect");

    p_acl->rs_disc_pending = BTM_SEC_DISC_PENDING;

  }

  /* Tear down the HCI link */

  else {

    btsnd_hcic_disconnect(conn_handle, reason);

  }

}



constexpr uint16_t kDataPacketEventBrEdr = (BT_EVT_TO_LM_HCI_ACL);

constexpr uint16_t kDataPacketEventBle =

    (BT_EVT_TO_LM_HCI_ACL | LOCAL_BLE_CONTROLLER_ID);

system/stack/btm/btm_sec.cc

+1 −25
Original line number Diff line number Diff line
@@ -1157,20 +1157,7 @@ static tBTM_STATUS btm_sec_send_hci_disconnect(tBTM_SEC_DEV_REC* p_dev_rec, 
      break;

  }



  /* If a role switch is in progress, delay the HCI Disconnect to avoid

   * controller problem */

  if (p_dev_rec->rs_disc_pending == BTM_SEC_RS_PENDING &&

      p_dev_rec->hci_handle == conn_handle) {

    BTM_TRACE_DEBUG(

        "RS in progress - Set DISC Pending flag in btm_sec_send_hci_disconnect "

        "to delay disconnect");

    p_dev_rec->rs_disc_pending = BTM_SEC_DISC_PENDING;

    status = BTM_SUCCESS;

  }

  /* Tear down the HCI link */

  else {

    btsnd_hcic_disconnect(conn_handle, reason);

  }

  acl_disconnect_after_role_switch(conn_handle, reason);



  return status;

}
@@ -3426,7 +3413,6 @@ void btm_sec_connected(const RawAddress& bda, uint16_t handle, uint8_t status, 
              btm_sec_change_pairing_state(BTM_PAIR_STATE_IDLE);

            }

          }

          p_dev_rec->rs_disc_pending = BTM_SEC_RS_NOT_PENDING; /* reset flag */

          return;

        } else {

          l2cu_update_lcb_4_bonding(p_dev_rec->bd_addr, true);
@@ -3439,10 +3425,6 @@ void btm_sec_connected(const RawAddress& bda, uint16_t handle, uint8_t status, 


  p_dev_rec->device_type |= BT_DEVICE_TYPE_BREDR;



  p_dev_rec->rs_disc_pending = BTM_SEC_RS_NOT_PENDING; /* reset flag */



  p_dev_rec->rs_disc_pending = BTM_SEC_RS_NOT_PENDING; /* reset flag */



  addr_matched = (btm_cb.pairing_bda == bda);



  if ((btm_cb.pairing_state != BTM_PAIR_STATE_IDLE) && addr_matched) {
@@ -3679,12 +3661,6 @@ void btm_sec_disconnected(uint16_t handle, tHCI_STATUS reason) { 
  transport =

      (handle == p_dev_rec->hci_handle) ? BT_TRANSPORT_BR_EDR : BT_TRANSPORT_LE;



  p_dev_rec->rs_disc_pending = BTM_SEC_RS_NOT_PENDING; /* reset flag */



  LOG_INFO("clearing pending flag handle:%d reason:%s", handle,

           hci_error_code_text(reason).c_str());

  p_dev_rec->rs_disc_pending = BTM_SEC_RS_NOT_PENDING; /* reset flag */



  /* clear unused flags */

  p_dev_rec->sm4 &= BTM_SM4_TRUE;

system/stack/btm/security_device_record.h

+0 −14
Original line number Diff line number Diff line
@@ -356,18 +356,4 @@ typedef struct { 
  tBTM_SEC_BLE ble;

  tBTM_LE_CONN_PRAMS conn_params;



#define BTM_SEC_RS_NOT_PENDING 0 /* Role Switch not in progress */

#define BTM_SEC_RS_PENDING 1     /* Role Switch in progress */

#define BTM_SEC_DISC_PENDING 2   /* Disconnect is pending */

  uint8_t rs_disc_pending;

  bool is_role_switch_idle() const {

    return rs_disc_pending == BTM_SEC_RS_NOT_PENDING;

  }

  bool is_role_switch_pending() const {

    return rs_disc_pending == BTM_SEC_RS_PENDING;

  }

  bool is_role_switch_disconnecting() const {

    return rs_disc_pending == BTM_SEC_DISC_PENDING;

  }



} tBTM_SEC_DEV_REC;

system/stack/include/acl_api.h

+2 −0
Original line number Diff line number Diff line
@@ -338,6 +338,8 @@ void btm_acl_removed(uint16_t handle); 
void acl_disconnect(const RawAddress& bd_addr, tBT_TRANSPORT transport,

                    uint8_t reason);



void acl_disconnect_after_role_switch(uint16_t conn_handle, uint16_t reason);



bool acl_peer_supports_sniff_subrating(const RawAddress& remote_bda);



void btm_acl_set_paging(bool value);