crypto: testmgr - test IV value after a cipher operation

The crypto drivers are supposed to update the IV passed to the crypto
request before calling the completion callback.
Test for the IV value before considering the test as successful.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 25032b0..2037983 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -1034,12 +1034,22 @@
 
 		q = data;
 		if (memcmp(q, template[i].result, template[i].rlen)) {
-			pr_err("alg: skcipher%s: Test %d failed on %s for %s\n",
+			pr_err("alg: skcipher%s: Test %d failed (invalid result) on %s for %s\n",
 			       d, j, e, algo);
 			hexdump(q, template[i].rlen);
 			ret = -EINVAL;
 			goto out;
 		}
+
+		if (template[i].iv_out &&
+		    memcmp(iv, template[i].iv_out,
+			   crypto_skcipher_ivsize(tfm))) {
+			pr_err("alg: skcipher%s: Test %d failed (invalid output IV) on %s for %s\n",
+			       d, j, e, algo);
+			hexdump(iv, crypto_skcipher_ivsize(tfm));
+			ret = -EINVAL;
+			goto out;
+		}
 	}
 
 	j = 0;