Un aligned addresses — Linux Kernel

Hi all
i have a embedded monta vista linux running.
i have developed a ethernet driver.
Its working Ok,
But i am facing some problem with the throughput.

After a lot of observation ,
i observed that i am getting un-aligned addresses of the data payload
from the TCP/IP stack.because of this problem i always have to do
memcpy to a word aligned buffer,because of which throughput is reduced
significantly.

Does anybody has some solution for this.
Regards
conio
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