Hi,

I installed redhat linux in my thinkpad t21, I read
the file /etc/pcmcia/config, it says my linux will use
"tulip_cb" as driver for this card.

After my linux boot up, I found this card can be
recognized and I can also use this card, but if I want
to copy(ftp or scp) some big files into my computer,
the speed becomes very slow, this problem only happens
on IN direction, for OUT direction, the speed is good.

Below is the output of lsmod:

Module                  Size  Used by    Not tainted
xircom_cb               7680   1
ds                      8384   2
yenta_socket           11936   2
pcmcia_core            49888   0  [ds yenta_socket]
autofs                 11076   0  (autoclean) (unused)
ide-cd                 30112   0  (autoclean)
cdrom                  32032   0  (autoclean) [ide-cd]
sd_mod                 11580   0  (autoclean) (unused)
scsi_mod               65536   1  (autoclean) [sd_mod]
nls_cp437               5120   1  (autoclean)
vfat                   11836   1  (autoclean)
fat                    36024   0  (autoclean) [vfat]
nls_cp936             124896   1  (autoclean)
nls_gb2312               996   3  (autoclean)
usb-uhci               24420   0  (unused)
usbcore                71552   1  [usb-uhci]


Seems my linux is using xircom_cb as driver for this
card?

Then I go to /lib/modules/2.4.18-3/pcmcia, but there
is not a driver called tulip.o as I expected. 

My questions are:
1. what driver should I use for this card? If it
should be tulip, how can I build this driver from
kernel source code?

2. How linux use xircom_cb as driver while in
/etc/pcmcia/config, it shows the driver for this card
should be tulip? I just want to know how linux find
the driver for network card when booting up.

thanks in advance

Yongming

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