Messages in this thread | | | Subject | Re: How does raw socket implementation handle ICMP (or any other non-kernel related protocols) | From | Andi Kleen <> | Date | 29 Sep 1999 13:11:12 +0200 |
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shankarv@future.futsoft.com (Shankar Vasudevan) writes:
> hi gurus, > > I make the following assumption (text in bold), if its wrong tell me the actual story. > > "In ip.c ip gives the whole ip packet (with header) to the raw socket implementation. (RSI)
Correct.
But please don't invent new acronyms like that.
> > > RSI strips the ip header off and gives the "raw ICMP" packet to the application which uses the socket.
Raw sockets always deliver with the IP header.
> > > Also the application when it wants to send a "raw ICMP" packet, it gives it to the RSI, which in turn > gives it to ip.c which wraps it with IP header and sends it out."
Unless you set IP_HDRINCL yes.
> > is the story same for any other non-kernel related protocols. >
Yes. And even for kernel related protocols.
This all and more is documented in raw(7), part of manpages 1.25+
-Andi -- This is like TV. I don't like TV.
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