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From: Nivedita Singhvi <niv@us.ibm.com>
To: Julian Anastasov <ja@ssi.bg>
Cc: Andi Kleen <ak@suse.de>, "Kevin W. Rudd" <ruddk@us.ibm.com>,
	davem@redhat.com, kuznet@ms2.inr.ac.ru, netdev@oss.sgi.com,
	chester.f.johnson@intel.com
Subject: Re: PMTU issues due to TOS field manipulation (for DSCP)
Date: Wed, 10 Dec 2003 12:33:47 -0800	[thread overview]
Message-ID: <3FD7832B.3010709@us.ibm.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0312102210060.7034-100000@l>

Julian Anastasov wrote:

> 	It can be an option: pmtu_promisc or whatever (default 0).
> We should avoid using TOS as hash key and if the var is 1 we should
> ignore matching the tos keys in ip_rt_frag_needed and ip_rt_redirect.
> By this way, all cache entries between saddr and daddr will be updated, no 
> matter the TOS or even OIF keys. Comments?

This is what I was going to suggest too, but one of the drawbacks
would be needing the user to recompile the distro kernel just
for this..could we keep any fix to this dynamically tunable?

thanks,
Nivedita

  reply	other threads:[~2003-12-10 20:33 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-10 18:23 PMTU issues due to TOS field manipulation (for DSCP) Kevin W. Rudd
2003-12-10 19:34 ` Andi Kleen
2003-12-10 20:20   ` Julian Anastasov
2003-12-10 20:33     ` Nivedita Singhvi [this message]
2003-12-10 21:18       ` Julian Anastasov
2003-12-10 22:36         ` Nivedita Singhvi
2003-12-10 22:51           ` David S. Miller
2003-12-10 23:15             ` Julian Anastasov
2003-12-10 23:20               ` David S. Miller
2003-12-11  0:06                 ` Julian Anastasov
2003-12-11  0:09                   ` David S. Miller
2003-12-11  0:34                     ` Julian Anastasov
2003-12-12  8:31                       ` David S. Miller
2003-12-12 23:38                         ` Julian Anastasov
2003-12-18 23:17                           ` Kevin W. Rudd
2004-01-19 22:43                           ` Kevin W. Rudd
2004-01-20  4:29                             ` David S. Miller
2003-12-13  0:10                         ` Julian Anastasov
2004-03-04  9:36                           ` David S. Miller
2004-03-04 20:56                             ` Julian Anastasov
2004-03-04 22:02                               ` kuznet
2004-03-06 11:55                                 ` Julian Anastasov
2004-03-06 16:02                                 ` Julian Anastasov
2003-12-10 20:26   ` Kevin W. Rudd
2003-12-10 20:52     ` Andi Kleen
2003-12-10 20:30   ` Nivedita Singhvi
2003-12-10 20:55     ` Andi Kleen
2003-12-10 21:11       ` Nivedita Singhvi
  -- strict thread matches above, loose matches on Subject: below --
2003-12-10 21:35 Johnson, Chester F
2003-12-10 23:36 Johnson, Chester F
2003-12-11  0:17 ` Julian Anastasov

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