Re: sendmsg and IP_PKTINFO

[Neil Brown]

On  February 19, [e-mail] wrote:
> "David S. Miller" <[e-mail]> writes:
> 
> > All you are showing us Neil is that the documentation
> > is inaccurate.  That snippet you showed me from manual
> > pages is wrong about sendmsg semantics.
> 
> Yes, it's wrong I agree. Here is a patch. Please check
> and if nobody complains Andries can apply.
> 

Thanks.  This helps, but I was imagining something a bit
wider-ranging.  In particular I though a "Control Messages" section
would be nice, which enumerated separately all the control messages
that can be recieved, and all those that can be sent.

As far as I can tell, control message are currently defined for:
   IPv4,
   IPv6,
   SOL_HCI - some bluetooth thing
   SOL_SOCKET (which don't seem to be clearly documented in socket(7))

I might try and draft some changes to ip.7 and maybe socket.7 next
week sometime.

NeilBrown