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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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@ -825,7 +825,7 @@ static void ipsec_esp_encrypt_done(struct device *dev,
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ipsec_esp_unmap(dev, edesc, areq);
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/* copy the generated ICV to dst */
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if (edesc->dma_len) {
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if (edesc->dst_nents) {
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icvdata = &edesc->link_tbl[edesc->src_nents +
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edesc->dst_nents + 2];
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sg = sg_last(areq->dst, edesc->dst_nents);
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