Relative Checksum

["Gilad Benjamini" <yaelgilad@myrealbox.com>]

Hi,
ip_fast_csum provides an asm version for IP checksum.
Any available mips-asm implementation out there for 
a relative checksum?

i.e. I get a packet, change
a field or two, and want to compute just the 
change in the checksum.