swapnil_1983_18 at yahoo
Dec 13, 2005, 1:13 AM
Post #1 of 1
(232 views)
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sk_buff packet data modification
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Hi
I am trying to develope a client-server authentiation
application in which all the client's outgoing packets
will carry certain token(32 bit value) in between
tcp/udp header & actual user data. the server will
remove that token & forward the packet on internet.
There is no mangling for reply from Internet.
My question is how do I allocate memory in between
tcp/udp header & user data for my token.(i.e how to
shift pointers). Do I have to construct new sk_buff
copy ( skb_copy_expand() )or existing sk_buff will
work?
I guess I dont have to change tcp seq/ack.
Thanks
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