Editing GbLAN

= Gigabit LAN =

The PS3 has 1 Gigabit Ethernet port. The port accepts Auto-MDIX (automatic medium-dependent interface crossover), so no need for special crosscables when hooking up the PS3 direct to the PC.

== Gigabit LAN chips used ==
A sample of the GbLAN chips in different PS3 models:
{| border="1" cellspacing="0" cellpadding="5" border="#999" class="wikitable" style="border:1px solid #999; border-collapse: collapse;" 
|- bgcolor="#cccccc"
! Ports !! Size !! Speed !! Voltage !! Packaging !! Manufacturer !! Serial Number !! Description
|-
| 8 (3 used) || 20x20mm || Xtal X3501: 25MHz || 3.3V/1.9V/1.2V || 144-pin TQFP || Marvell Alaska || [[88E6108-LAR1]] || Used in earlier models (up to [[CECHGxx]]/[[SEM-00x]])
|-
| ? || ? || ? || ? || ? || Marvell Alaska || [[88E6106-LKJ1]] || Used in later models ([[CECHHxx]]/[[DIA-00x]])
|-
| - || - || 125MHz || 3.3V, 2.5V or 1.8V || 64-pin QFN || Marvell Alaska || [[88E1118R-NNC2]] || Used in Slim models ([[CECH-20xx]]/[[DYN-00x]])
|-
| - || 6,5x6,5mm || - || - || 48-pin || Marvell Alaska || [[88E1310-NNB2]] || Used in Slim models ([[CECH-25xx]], [[CECH-30xx]])
|-
|}
:

== Jumbo frames ==
From Linux perspective (under OtherOS &lt;=3.15), the old drivers set the [http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=blob;f=drivers/net/ps3_gelic_net.h;h=5e1c28654e16146918a70e2efbbd3da4619a939f;hb=02c1889166b47b9ade309a8f4b7c4ddf0489d869#l44 MTU to 2308], while newer versions set the [http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=blob;f=drivers/net/ps3_gelic_net.h;h=d9a55b93898b24f2b67a6f54accc5ee064d79bbb;hb=HEAD#l35 MTU of 1518]. This could be a hypervisor restriction (needs research).

 MTU is set with vsh using syscall net_ioctl (libnet)

On 3.41 firmware, with a [https://gist.github.com/jevinskie/945199a90858319642ded49df632554e modified ps3_gelic driver], frames of 1624 bytes can be sent and frames of 1628 bytes can be received.

=== Efficiency ===
{| class="wikitable" style="text-align:center;"
! Frame type !! colspan=2 | Layer 1 overhead !! colspan=2 | Layer 2 overhead !! MTU !! Layer 3 overhead !! Layer 4 overhead !! Payload size !! Total transmitted !! Efficiency
|-
| Standard || rowspan="4" | preamble<br />8 byte || rowspan="4" | IPG<br />12 byte || rowspan="4" | frame header<br />14 byte || rowspan="4" | FCS<br />4 byte || 1500 || rowspan="4" | IPv4 header<br />20 byte || rowspan="4" | TCP header<br />20 byte || 1460 byte || 1538 byte || {{round|94.928478544}}%
|-
| old gelic || 2308 || 2268 byte || 2346 byte || {{round|96.675191816}}%
|-
| new gelic || 1518 || 1478 byte || 1556 byte || {{round|94.98714653}}%
|-
| mod gelic || 1624 || 1584 byte || 1662 byte || {{round|95.306859206}}%
|-
|}



{{Motherboard Components}}<noinclude>[[Category:Main]]</noinclude>