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Commit 32fc9876 authored by Sungsoo Lim's avatar Sungsoo Lim
Browse files

Use L2CAP_DEFAULT_MTU if mtu is not specified 

According to Bluetooth Core Spec 5.3 (Vol 3, Part A.5.1),
the MTU is asymmetric and the sender of the Request shall
specify the MTU it can receive on this channel if it differs
from the default value.

Bug: 215742460
Tag: #refactor
Test: atest CtsBluetoothTestCases bluetooth_test_gd_unit
Change-Id: Iceaba85ba7e812920a3c7d26980db02b58de0b8f
parent fb34ed57

system/stack/gap/gap_conn.cc

+15 −10
Original line number Diff line number Diff line
@@ -763,17 +763,22 @@ static void gap_config_ind(uint16_t l2cap_cid, tL2CAP_CFG_INFO* p_cfg) { 
  if (p_ccb == NULL) return;



  /* Remember the remote MTU size */



  if (!p_cfg->mtu_present) {

    p_ccb->rem_mtu_size = L2CAP_DEFAULT_MTU;

  } else {

    if (p_ccb->cfg.fcr.mode == L2CAP_FCR_ERTM_MODE) {

    local_mtu_size = BT_DEFAULT_BUFFER_SIZE - sizeof(BT_HDR) - L2CAP_MIN_OFFSET;

  } else

      local_mtu_size =

          BT_DEFAULT_BUFFER_SIZE - sizeof(BT_HDR) - L2CAP_MIN_OFFSET;

    } else {

      local_mtu_size = L2CAP_MTU_SIZE;



  if ((!p_cfg->mtu_present) || (p_cfg->mtu > local_mtu_size)) {

    }

    if (p_cfg->mtu > local_mtu_size) {

      p_ccb->rem_mtu_size = local_mtu_size;

  } else

    } else {

      p_ccb->rem_mtu_size = p_cfg->mtu;

    }

  }

}



/*******************************************************************************

 *