#93 Re: dropped packets

[Anonymous]

Hello All,

Wednesday, January 02, 2002, 6:40:55 PM, you wrote:

R> Hi ALL!!
R> I have (many) Acorp NICs with RTL8139B chip on many
computers
R> (k6-2 266 on ali motherboard, celeron 366 on via
motherboard ).
R> I've tested 8139too.c (v0.9.15, v0.9.17, v0.9.18,
v0.9.22a) and
R> rtl8139.c (v1.12a, v1.13, v1.14, v1.15, v1.16a) and
_ALL_ of them have
R> same bug (rtl8139.c v1.07 is good; I didn't get
v.1.08 - v.1.11 because
R> I don't know where) with kernels 2.2.16, 2.2.19,
2.4.5, 2.4.17 as
R> modules and compiled into kernel, in 10T and 100TX
modes.

R> THE BUG IS:
R> Over 20% of packets are lost and speed in 100Mbit/s
mode was just
R> ~ 900 Kbytes/s.
R> how I can see it (in 10T mode):
I HAVE FOUND THE _BUG_ :-)
to correct it check this:
in rtl_hw_start()
for good work _must_ be something like this (and it
was in older versions of driver)
outl((TX_DMA_BURST<<8) | 0x03000000,ioaddr+TxConfig);

I dont know _why_ this magic stuff (0x03000000), but
it _MUST_ be.

--
Best regards,
Roman
mailto:roman@complex.lviv.ua