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

[Pablo de Lara]

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.

Bugzilla ID: 44
Fixes: 2661f4fbe93d ("examples/l2fwd-crypto: add AEAD parameters")
Cc: stable at dpdk.org

Reported-by: Ankur Dwivedi <ankur.dwivedi at cavium.com>
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com>
---
 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