From: Horia Geanta <horia.geanta@freescale.com>
Date: Thu, 2 Aug 2012 14:16:37 +0000 (+0300)
Subject: crypto: talitos - fix icv management on outbound direction
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~19^2~37
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=60542505b0bccbc5e2e518c9dd6bee9a30546061;p=pandora-kernel.git

crypto: talitos - fix icv management on outbound direction

For IPsec encryption, in the case when:
-the input buffer is fragmented (edesc->src_nents > 0)
-the output buffer is not fragmented (edesc->dst_nents = 0)
the ICV is not output in the link table, but after the encrypted payload.

Copying the ICV must be avoided in this case; consequently the condition
edesc->dma_len > 0 must be more specific, i.e. must depend on the type
of the output buffer - fragmented or not.

Testing was performed by modifying testmgr to support src != dst,
since currently native kernel IPsec does in-place encryption
(src == dst).

Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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