Re: R: Kernel bug handling TCP_RTO_MAX?

From: Matti Aarnio (
Date: Fri Dec 13 2002 - 17:58:19 EST

On Fri, Dec 13, 2002 at 10:07:01AM -0800, Nivedita Singhvi wrote:
> Andrew McGregor wrote:
> > In a closed network, why not have SOCK_STREAM map to something faster than
> > TCP anyway? That is, if I connect(address matching localnet), SOCK_STREAM
> > maps to (eg) SCTP. That would be a far more dramatic performance hack!
> >
> > Andrew
> Not that simple. SCTP (if that is what Matti was referring to) is
> a SOCK_STREAM socket, with a protocol of IPPROTO_SCTP. I'm just
> getting done implementing a testsuite against the SCTP API.

  Most likely that is what I did mean.
Things in IETF do on occasion change names, or I don't always
remember all characters in (E)TLA-acronyms I use rarely...

> But dont expect SCTP to be the surreptitious underlying layer
> carrying TCP traffic, if thats an expectation that anyone has :)

At least I didn't expect that, don't know of others.

It all depends on application coders, if users will be able
to use arbitrary network protocols -- say any SOCK_STREAM
protocol supported now, and in future by system kernel.
Ever heard of "TLI" ?

> Solving this problem without application involvement is a
> more limited scenario..

Yes, but sufficiently important to occasionally.

Doing things like this mapping might make limited sense
via routing table lookups.

> thanks,
> Nivedita

/Matti Aarnio
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

This archive was generated by hypermail 2b29 : Sun Dec 15 2002 - 22:00:30 EST