GbLAN: Difference between revisions
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On 3.41 firmware, with a [http://pastie.org/2555526 modified ps3_gelic driver], frames of 1624 bytes can be sent and frames of 1628 bytes can be received. | On 3.41 firmware, with a [http://pastie.org/2555526 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> | {{Motherboard Components}}<noinclude>[[Category:Main]]</noinclude> | ||
Revision as of 03:14, 5 February 2015
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:
| 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 | 88E6108-LAR1 | Used in earlier models (up to CECHGxx/SEM-00x) |
| ? | ? | ? | ? | ? | Marvell | 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) |
Jumbo frames
From Linux perspective (under OtherOS <=3.15), the old drivers set the MTU to 2308, while newer versions set the 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 modified ps3_gelic driver, frames of 1624 bytes can be sent and frames of 1628 bytes can be received.
Efficiency
| Frame type | Layer 1 overhead | Layer 2 overhead | MTU | Layer 3 overhead | Layer 4 overhead | Payload size | Total transmitted | Efficiency | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Standard | preamble 8 byte |
IPG 12 byte |
frame header 14 byte |
FCS 4 byte |
1500 | IPv4 header 20 byte |
TCP header 20 byte |
1460 byte | 1538 byte | 94.93% |
| old gelic | 2308 | 2268 byte | 2346 byte | 96.68% | ||||||
| new gelic | 1518 | 1478 byte | 1556 byte | 94.99% | ||||||
| mod gelic | 1624 | 1584 byte | 1662 byte | 95.31% | ||||||
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