[PATCH v5 07/21] test/cryptodev: allow zero packet length buffers

[Aakash Sasidharan]

From: Anoob Joseph <ano...@marvell.com>

The function 'create_segmented_mbuf' is updated to support zero packet
length mbufs. This allows testing of zero packet length payload with TLS
record processing.

Signed-off-by: Anoob Joseph <ano...@marvell.com>
---
 app/test/test_cryptodev.h | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/app/test/test_cryptodev.h b/app/test/test_cryptodev.h
index f27d9697fd..fd9ea0dd81 100644
--- a/app/test/test_cryptodev.h
+++ b/app/test/test_cryptodev.h
@@ -182,15 +182,8 @@ create_segmented_mbuf(struct rte_mempool *mbuf_pool, int 
pkt_len,
                int nb_segs, uint8_t pattern) {
 
        struct rte_mbuf *m = NULL, *mbuf = NULL;
+       int size, t_len, data_len = 0;
        uint8_t *dst;
-       int data_len = 0;
-       int i, size;
-       int t_len;
-
-       if (pkt_len < 1) {
-               printf("Packet size must be 1 or more (is %d)\n", pkt_len);
-               return NULL;
-       }
 
        if (nb_segs < 1) {
                printf("Number of segments must be 1 or more (is %d)\n",
@@ -202,17 +195,17 @@ create_segmented_mbuf(struct rte_mempool *mbuf_pool, int 
pkt_len,
        size = pkt_len;
 
        /* Create chained mbuf_src and fill it generated data */
-       for (i = 0; size > 0; i++) {
+       do {
 
                m = rte_pktmbuf_alloc(mbuf_pool);
-               if (i == 0)
-                       mbuf = m;
-
                if (m == NULL) {
                        printf("Cannot create segment for source mbuf");
                        goto fail;
                }
 
+               if (mbuf == NULL)
+                       mbuf = m;
+
                /* Make sure if tailroom is zeroed */
                memset(m->buf_addr, pattern, m->buf_len);
 
@@ -229,7 +222,8 @@ create_segmented_mbuf(struct rte_mempool *mbuf_pool, int 
pkt_len,
 
                size -= data_len;
 
-       }
+       } while (size > 0);
+
        return mbuf;
 
 fail:
-- 
2.25.1