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Used single TCP configuration for devices

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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.

Bug: 213596972
Test: Manual

Change-Id: I1f19e1217f7e7da37b3dd3b511d4859d77ec7bad
This commit is contained in:
Jack Yu
2022-01-07 11:47:59 -08:00
parent b1866650e5
commit ee410d34a6
3 changed files with 18 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
core/res/res/values/config.xml
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@@ -2685,10 +2685,27 @@
<!-- Configure mobile tcp buffer sizes in the form:
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.
-->
<string-array name="config_mobile_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>
<!-- Configure ethernet tcp buffersizes in the form:
rmem_min,rmem_def,rmem_max,wmem_min,wmem_def,wmem_max -->
<string name="config_ethernet_tcp_buffers" translatable="false">524288,1048576,3145728,524288,1048576,2097152</string>

1
core/res/res/values/symbols.xml
View File

@@ -481,6 +481,7 @@
<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="string" name="config_tcp_buffers" />
<java-symbol type="integer" name="config_volte_replacement_rat"/>
<java-symbol type="integer" name="config_valid_wappush_index" />
<java-symbol type="integer" name="config_overrideHasPermanentMenuKey" />

35
telephony/java/android/telephony/CarrierConfigManager.java
View File

@@ -2932,19 +2932,6 @@ public class CarrierConfigManager {
public static final String KEY_SIGNAL_STRENGTH_NR_NSA_USE_LTE_AS_PRIMARY_BOOL =
"signal_strength_nr_nsa_use_lte_as_primary_bool";
/**
* String array of TCP buffer sizes per network type.
* The entries should be of the following form, with values in bytes:
* "network_name:read_min,read_default,read_max,write_min,write_default,write_max".
* For NR (5G), the following network names should be used:
* - NR_NSA: NR NSA, sub-6 frequencies
* - NR_NSA_MMWAVE: NR NSA, mmwave frequencies
* - NR_SA: NR SA, sub-6 frequencies
* - NR_SA_MMWAVE: NR SA, mmwave frequencies
* @hide
*/
public static final String KEY_TCP_BUFFERS_STRING_ARRAY = "tcp_buffers_string_array";
/**
* String array of default bandwidth values per network type.
* The entries should be of form: "network_name:downlink,uplink", with values in Kbps.
@@ -6020,28 +6007,6 @@ public class CarrierConfigManager {
"iDEN:14,14", "LTE:30000,15000", "HSPA+:13000,3400", "GSM:24,24",
"TD_SCDMA:115,115", "LTE_CA:30000,15000", "NR_NSA:47000,18000",
"NR_NSA_MMWAVE:145000,60000", "NR_SA:145000,60000", "NR_SA_MMWAVE:145000,60000"});
sDefaults.putStringArray(KEY_TCP_BUFFERS_STRING_ARRAY, new String[]{
"GPRS:4092,8760,48000,4096,8760,48000", "EDGE:4093,26280,70800,4096,16384,70800",
"UMTS:58254,349525,1048576,58254,349525,1048576",
"CDMA:4094,87380,262144,4096,16384,262144",
"1xRTT:16384,32768,131072,4096,16384,102400",
"EvDo_0:4094,87380,262144,4096,16384,262144",
"EvDo_A:4094,87380,262144,4096,16384,262144",
"HSDPA:61167,367002,1101005,8738,52429,262114",
"HSUPA:40778,244668,734003,16777,100663,301990",
"HSPA:40778,244668,734003,16777,100663,301990",
"EvDo_B:4094,87380,262144,4096,16384,262144",
"eHRPD:131072,262144,1048576,4096,16384,524288",
"iDEN:4094,87380,262144,4096,16384,262144",
"LTE:524288,1048576,2097152,262144,524288,1048576",
"HSPA+:122334,734003,2202010,32040,192239,576717",
"GSM:4092,8760,48000,4096,8760,48000",
"TD_SCDMA:58254,349525,1048576,58254,349525,1048576",
"LTE_CA:4096,6291456,12582912,4096,1048576,2097152",
"NR_NSA:2097152,6291456,16777216,512000,2097152,8388608",
"NR_NSA_MMWAVE:2097152,6291456,16777216,512000,2097152,8388608",
"NR_SA:2097152,6291456,16777216,512000,2097152,8388608",
"NR_SA_MMWAVE:2097152,6291456,16777216,512000,2097152,8388608"});
sDefaults.putBoolean(KEY_BANDWIDTH_NR_NSA_USE_LTE_VALUE_FOR_UPLINK_BOOL, false);
sDefaults.putString(KEY_WCDMA_DEFAULT_SIGNAL_STRENGTH_MEASUREMENT_STRING, "rssi");
sDefaults.putBoolean(KEY_CONFIG_SHOW_ORIG_DIAL_STRING_FOR_CDMA_BOOL, false);