FIB MFC

[Igor Sysoev]

On Thu, Jul 24, 2008 at 09:44:15AM -0700, Julian Elischer wrote:

> Igor Sysoev wrote:
> >On Thu, Jul 24, 2008 at 08:33:09AM -0700, Julian Elischer wrote:
> >
> 
> 
> >>I was thinking that it might be possible to tag a socket to accept the 
> >>fib of the packet coming in, but if we do this, we should decide
> >>API to label a socket in this way..
> >
> >I think it should be sysctl to globaly enable TCP FIB inheritance.
> >API is already exists: sockopt(SO_SETFIB) for listening socket.
> 
> But a socket ALWAYS has a fib, even if you do nothing
> because every process has a fib (usually 0)
> so you need a new bit of state somewhere that means "inherit".
> (I guess in the socket flags).

I see.

> Possibly the FIB value of -1 when applied on a socket option might
> signify that behaviour. (thus save us a new sockopt).
> But such a value would revert to that of the process if the socket was 
> not used as a listen socket. (or clear itself).

-1 is good variant.

> I have some MRT unhansements in hte pipeline and will include this if
> I can.
> 
> BTW could you send me the diff for ipfw(8)?
> I'll compare it with the one I'm about to commit.

This is exactly your already commited 1.108.2.9


-- 
Igor Sysoev
http://sysoev.ru/en/