From: David Howells <dhowells@redhat.com>
To: netdev@vger.kernel.org
Cc: Patrick McHardy <kaber@trash.net>
Subject: How to find I/F to destination
Date: Fri, 04 May 2007 13:48:48 +0100 [thread overview]
Message-ID: <5484.1178282928@redhat.com> (raw)
Hi,
I would like to determine through which interface packets sent to a particular
UDP destination will go through, and so determine the MTU size for that
interface. Can anyone suggest a good way of doing this from within the
kernel?
Doing this will permit AF_RXRPC to obtain a better initial guess as to the
maximum size of the packets that can be sent that way.
I could use the code Patrick gave me to allow AFS to iterate through all the
interfaces and then pick the smallest MTU, but that seems wrong somehow -
though it probably will result in the correct answer 99% of the time.
David
next reply other threads:[~2007-05-04 12:48 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-04 12:48 David Howells [this message]
2007-05-04 12:54 ` How to find I/F to destination Evgeniy Polyakov
2007-05-04 13:04 ` David Howells
2007-05-04 13:06 ` David Howells
2007-05-04 13:08 ` David Howells
2007-05-04 13:16 ` Evgeniy Polyakov
2007-05-04 13:24 ` David Howells
2007-05-04 13:29 ` Evgeniy Polyakov
2007-05-04 13:33 ` David Howells
2007-05-04 13:43 ` Patrick McHardy
2007-05-04 13:55 ` David Howells
2007-05-04 13:59 ` Patrick McHardy
2007-05-05 9:13 ` Evgeniy Polyakov
2007-05-05 9:15 ` Evgeniy Polyakov
2007-05-04 13:20 ` Evgeniy Polyakov
2007-05-04 13:23 ` David Howells
2007-05-04 13:25 ` Evgeniy Polyakov
2007-05-04 13:00 ` Patrick McHardy
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