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Commit bef8fde2 authored by Sarah Chin's avatar Sarah Chin
Browse files

Add support for RAT-based TCP buffer sizes 

If the RAT-based resource overlay is not set,
config_tcp_buffers will be used instead.

Test: atest FrameworksTelephonyTests
Bug: 222323543
Change-Id: I55ccb2a2f0b2408e97aa851b5a6e77cf2abac9f2
parent 589c1ad6

core/res/res/values/config.xml

+11 −7
Original line number Diff line number Diff line
@@ -2693,23 +2693,27 @@ 
         rat-name:rmem_min,rmem_def,rmem_max,wmem_min,wmem_def,wmem_max

         If no value is found for the rat-name in use, the system default will be applied.



         This is deprecated. Please use config_tcp_buffers.

         This is deprecated. Please use config_mobile_tcp_buffers for rat-based TCP buffers sizes or

         config_tcp_buffers for rat-independent TCP buffer sizes.

    -->

    <string-array name="config_mobile_tcp_buffers">

    </string-array>



    <!-- Configure tcp buffer sizes per network type in the form:

         network-type:rmem_min,rmem_def,rmem_max,wmem_min,wmem_def,wmem_max



         The network-type must be a valid DataConfigNetworkType value. If no value is found for the

         network-type in use, config_tcp_buffers will be used instead.

    -->

    <string-array name="config_network_type_tcp_buffers">

    </string-array>



    <!-- Configure tcp buffer sizes in the form:

         rmem_min,rmem_def,rmem_max,wmem_min,wmem_def,wmem_max

         If this is configured as an empty string, the system default will be applied.



         For now this config is used by mobile data only. In the future it should be

         used by Wi-Fi as well.



         Note that starting from Android 13, the TCP buffer size is fixed after boot up, and should

         never be changed based on carriers or the network types. The value should be configured

         appropriately based on the device's memory and performance. It is recommended to use lower

         values if the device has low memory or doesn't support high-speed network such like LTE,

         NR, or Wifi.

    -->

    <string name="config_tcp_buffers" translatable="false"></string>

core/res/res/values/symbols.xml

+1 −0
Original line number Diff line number Diff line
@@ -472,6 +472,7 @@ 
  <java-symbol type="integer" name="config_safe_media_volume_usb_mB" />

  <java-symbol type="integer" name="config_mobile_mtu" />

  <java-symbol type="array"   name="config_mobile_tcp_buffers" />

  <java-symbol type="array"   name="config_network_type_tcp_buffers" />

  <java-symbol type="string"  name="config_tcp_buffers" />

  <java-symbol type="bool" name="config_force_enable_telephony_new_data_stack" />

  <java-symbol type="integer" name="config_volte_replacement_rat"/>