Hello everybody
I have creat 3 endpiont, which one for intrrupt in, one for bulk in,
and the third for bluk out. my driver could reach the transport rate at 20MB/s
in 2.4 version kernel. but in 2.6 version i only got a half, 10MB/s. the same
mechanism
been used to implement driver. i confuse about it. it should faster in 2.6
kernel.
the data mainly from host to target, and the intrrupt in recive some data
from target every 2 milliseconds.driver use a queue to submit bulk out urb,
could submit 32 urb each time. and the urb buffer is 16KB, and the intrrupt urb
is submit in intrrupt callback function. when intrrupt endpiont is disable, the
data rate from host to target may gain about 2 Mbytes.
kmalloc is used to allocate urb buf.
which aspect should take care to transplant driver from 2.4 to 2.6, and how
to optimize the usb speed?
Any comments will be appreciate !
Good luck!
DuRui
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