[ovs-dev] [PATCH] gre: Fix ICMP translation for path MTU discovery.

Ben Pfaff blp at nicira.com
Wed Apr 21 16:40:57 UTC 2010

On Wed, Apr 21, 2010 at 12:37:20PM -0400, Jesse Gross wrote:
> On Wed, Apr 21, 2010 at 12:16 PM, Ben Pfaff <blp at nicira.com> wrote:
> > On Tue, Apr 20, 2010 at 05:22:01PM -0400, Jesse Gross wrote:
> > > The translation of fragmentation-needed messages from outside the
> > > tunnel to inside didn't quite make the transition from the old
> > > GRE implementation to the new one intact.  This fixes a number of
> > > minor bugs in the implmentation.  The primary issues are with computing
> > > the tunnel header length and comparing the input vs. output values
> > > for tunnel parameters such as the key.
> >
> > How thoroughly do you recommend that I should review this?  I looked it
> > over fairly quickly and didn't see anything that looked bad, but I could
> > spend some more time on it, if you think I should, and increase my
> > understanding.
> >
> More than anything this is just a cleanup patch.  I tested this
> functionality before I pushed the big changeset, saw that it was broken but
> didn't have disastrous consequences and decided to wait.  None of the logic
> here is new - it's all brought over from my path MTU implementation for
> Linux GRE devices.  I believe all the PMTUD stuff works now with this patch
> so hopefully there won't be too much more in this area.
> Obviously you are welcome to review it if you want but if you don't see
> anything obviously stupid it's probably unnecessary.

I'm happy with what I already saw, then.

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