Re: raw socket, IP_HDRINCL byteorder

>Can someone pull together the total semantics of IP_HDR_RAW (or
>whatever we decide to call it?)  I'd do this myself but I deleted some
>of the earlier messages of this thread...
>What about handling of ip_id and ip_sum?  

	how about this.  all fields are in network byteorder.

	outgoing:
	ip_len: the whole IP packet length (not the payload)
	ip_off: offset portion and MF bit has to be zero.
	ip_id: overwritten by the kernel
	ip_sum: overwritten by the kernel
	ip option: ???? interaction with IP_OPTIONS?

	incoming:
	ip_len: the whole IP packet length (not the payload) = as is
	ip_off: as is (same as the packet on the wire)
	ip_id: as is (same as the packet on the wire)
	ip_sum: as is (same as the packet on the wire)
	ip option: as is (same as the packet on the wire)

itojun

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