Thread (11 messages) 11 messages, 4 authors, 2011-02-28

Re: [RFC PATCH] ipsec: fix IPv4 AH alignment on 32 bits

flat view

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2011-01-28 04:51:14

David Miller [off-list ref] wrote:
We cannot just start rejecting the old 8-byte alignment on input if
Linux has been using an 8-byte alignment since day one.

If you want this change to be considered seriously, you need to relax
the AH4 input check.
I second your sentiment.  However, in this particular case it
would appear that our old implementation was also overly strict
in rejecting 32-bit alignment so even if we relax it now it still
wouldn't work with an old implementation once we reduce the padding
on output (unless you traffic was one-way only).

So perhaps an SA configuration flag is needed?

Cheers,
-- 
Email: Herbert Xu [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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