I am working on an embedded project where we changed from a Via
Mini-ITX board to an Intel based Mini-ITX board. The embedded device
controls two USB devices and connects to a Firewire camera. The
images from the camera are sent over gigabit Ethernet to some control computer.
The change from Via to Intel fixed a USB bug, but created a Ethernet
bug. The image data is corrupted when sent over the motherboard's
Intel 82541PI LAN chip, but if we use a Realtek RTL8169s-32 PCI board
the data is fine. If I limit the "send" transfer size to around 8K
on the Intel chip, it works. On the Realtek I can send 8MB.
I can run the program on a full blown computer for testing. I have
tried this on Fedora Core 4 with some of the newer kernels, and on
Core 5 updated to kernel 2.6-17. On all kernels the Intel LAN
reorders the data, the Realtek LAN works.
I do not want to limit the transfer size, because it slows down the
system. I also like knowing why I need a work around.
Any Ideas?
Thanks
Charles Fischer
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