Messages in this thread | | | From | "Shipman, Jeffrey E" <> | Subject | TCP checksum? | Date | Thu, 13 Jun 2002 09:10:46 -0600 |
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I'm looking for a function similar to skb_checksum(), but for the tcphdr->check field. I'm playing around with a module I've written for netfilter and I would like to modify options of the IP and TCP headers. For example, right now I'm trying to set the destination IP to the source IP, but the TCP checksum is coming out incorrectly. How can I calculate this checksum?
Thanks a lot in advance. Also, if anyone knows where some documentation about the TCP/IP stack in the kernel are, please let me know.
Jeff Shipman - CCD Sandia National Laboratories (505) 844-1158 / MS-1372
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