[eepro100] How to make eepro100 to receive pkt > 1514 ?

Bartlomiej Zarzecki bz@riz.pl
Mon Mar 18 05:04:01 2002

On Mon, 18 Mar 2002, wyb wrote:

> I'm working on a firewall project, this firewall is designed to support switch trunk,
> such as 802.1q or CISCO isl. So it must be able to receive packet size > 1514.
> I changed PKT_BUF_SZ from 1536 to 1572, but it didn't work. Can any give suggesstion ?
> Mail answer to me for I dit not subscribe to this list.

You have to do this:

go to eepro100.c

find :

const char i82557_config_cmd[22] = 

0xf2, 0x48,   0, 0x40, 0xf2, 0x80,              
0xf2, 0x48,   0, 0x40, 0xfa, 0x80,     

const char i82558_config_cmd[22] = {

0x68, 0, 0x40, 0xf2, 0xBD,              
0x68, 0, 0x40, 0xfa, 0xBD, 

generally if I am right this is the "init" of the card. changing 0xf2 to
0xfa enables receiving long frames.

 Bartlomiej Zarzecki				bz@riz.pl
 Public PGP Key http://bz.riz.pl/bz.asc