diff mbox

[dpdk-dev,v4,10/26] examples/l2fwd-crypto: move IV to crypto op private data

Message ID 20170702054127.75610-11-pablo.de.lara.guarch@intel.com (mailing list archive)
State Accepted, archived
Delegated to: Pablo de Lara Guarch
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation fail apply patch file failure

Commit Message

De Lara Guarch, Pablo July 2, 2017, 5:41 a.m. UTC 
  Usually, IV will change for each crypto operation.
Therefore, instead of pointing at the same location,
IV is copied after each crypto operation.

This will let the IV to be passed as an offset from
the beginning of the crypto operation, instead of
a pointer.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>
---
 examples/l2fwd-crypto/main.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)
diff mbox

Patch

diff --git a/examples/l2fwd-crypto/main.c b/examples/l2fwd-crypto/main.c
index 779b4fb..1380bc6 100644
--- a/examples/l2fwd-crypto/main.c
+++ b/examples/l2fwd-crypto/main.c
@@ -89,6 +89,10 @@  enum cdev_type {
 #define MAX_PKT_BURST 32
 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
 
+#define MAXIMUM_IV_LENGTH	16
+#define IV_OFFSET		(sizeof(struct rte_crypto_op) + \
+				sizeof(struct rte_crypto_sym_op))
+
 /*
  * Configurable number of RX/TX ring descriptors
  */
@@ -480,8 +484,14 @@  l2fwd_simple_crypto_enqueue(struct rte_mbuf *m,
 	}
 
 	if (cparams->do_cipher) {
-		op->sym->cipher.iv.data = cparams->iv.data;
-		op->sym->cipher.iv.phys_addr = cparams->iv.phys_addr;
+		uint8_t *iv_ptr = rte_crypto_op_ctod_offset(op, uint8_t *,
+							IV_OFFSET);
+		/* Copy IV at the end of the crypto operation */
+		rte_memcpy(iv_ptr, cparams->iv.data, cparams->iv.length);
+
+		op->sym->cipher.iv.data = iv_ptr;
+		op->sym->cipher.iv.phys_addr =
+				rte_crypto_op_ctophys_offset(op, IV_OFFSET);
 		op->sym->cipher.iv.length = cparams->iv.length;
 
 		/* For wireless algorithms, offset/length must be in bits */
@@ -1950,7 +1960,6 @@  reserve_key_memory(struct l2fwd_crypto_options *options)
 	options->iv.data = rte_malloc("iv", MAX_KEY_SIZE, 0);
 	if (options->iv.data == NULL)
 		rte_exit(EXIT_FAILURE, "Failed to allocate memory for IV");
-	options->iv.phys_addr = rte_malloc_virt2phy(options->iv.data);
 
 	options->aad.data = rte_malloc("aad", MAX_KEY_SIZE, 0);
 	if (options->aad.data == NULL)
@@ -1993,7 +2002,7 @@  main(int argc, char **argv)
 
 	/* create crypto op pool */
 	l2fwd_crypto_op_pool = rte_crypto_op_pool_create("crypto_op_pool",
-			RTE_CRYPTO_OP_TYPE_SYMMETRIC, NB_MBUF, 128, 0,
+			RTE_CRYPTO_OP_TYPE_SYMMETRIC, NB_MBUF, 128, MAXIMUM_IV_LENGTH,
 			rte_socket_id());
 	if (l2fwd_crypto_op_pool == NULL)
 		rte_exit(EXIT_FAILURE, "Cannot create crypto op pool\n");