Re: [dpdk-dev] [PATCH] examples/l2fwd-crypto: fix digest with AEAD algorithms

["Dwivedi, Ankur" <Ankur.Dwivedi@cavium.com>]

Hi Pablo,


This patch solves the bug.


Thanks

Ankur

________________________________
From: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Sent: Monday, July 16, 2018 1:56:16 PM
To: Dwivedi, Ankur; declan.doherty@intel.com
Cc: dev@dpdk.org; Pablo de Lara; stable@dpdk.org
Subject: [PATCH] examples/l2fwd-crypto: fix digest with AEAD algorithms

External Email

When performing authentication verification (both for AEAD algorithms,
such as AES-GCM, or for authentication algorithms, such as SHA1-HMAC),
the digest address is calculated based on the packet size and the
algorithm used (substracting digest size and IP header to the packet size).

However, for AEAD algorithms, this was not calculated correctly,
since the digest size was not being substracted.
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>

Bugzilla ID: 44
Fixes: 2661f4fbe93d ("examples/l2fwd-crypto: add AEAD parameters")
Cc: stable@dpdk.org
---
 examples/l2fwd-crypto/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/l2fwd-crypto/main.c b/examples/l2fwd-crypto/main.c
index 9d6bb7857..9ac06a697 100644
--- a/examples/l2fwd-crypto/main.c
+++ b/examples/l2fwd-crypto/main.c
@@ -408,7 +408,7 @@ l2fwd_simple_crypto_enqueue(struct rte_mbuf *m,
        /* Zero pad data to be crypto'd so it is block aligned */
        data_len  = rte_pktmbuf_data_len(m) - ipdata_offset;

-       if (cparams->do_hash && cparams->hash_verify)
+       if ((cparams->do_hash || cparams->do_aead) && cparams->hash_verify)
                data_len -= cparams->digest_length;

        if (cparams->do_cipher) {
--
2.14.4