Re: [PATCH] 8139too Interframe Gap Time

From: Jeff Garzik
Date: Wed Mar 10 2004 - 18:08:21 EST


Rene Herman wrote:
Hi Jeff,

in drivers/net/8139too.c, we have:

/* Check this value: the documentation for IFG contradicts ifself. */
RTL_W32 (TxConfig, rtl8139_tx_config);

I see that in older versions of the documentation there indeed were some
contradictions but the current version 1.4:

ftp://210.51.181.211/cn/nic/rtl8139abcd8130810xseries/rtl8139cspec_1.4.pdf

clears it up and it seems 8139too guessed wrong. I have verified that
realtek's own windows 9x driver agrees with the documentation.

No equipment to actually measure the IFG and no difference in network
behaviour shows up on a good 100Mbit-FD switch connected LAN, but it
does on an el-cheapo 10Mbit-HD hub connected LAN. Without attached
patch the packet and collision counters are basically the same; with
patch, the latter is only some 70% of the former. Hurray!


Nice!

I'm glad somebody finally got around to doing this :)

I'll give this some testing (and put it in Andrew's -mm for that reason as well), and then apply it.

Thanks,

Jeff



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