app/test: check cloning a clone

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

diff --git a/app/test/test_mbuf.c b/app/test/test_mbuf.c
index a16ec53..68564ee 100644 (file)
--- a/app/test/test_mbuf.c
+++ b/app/test/test_mbuf.c
@@ -126,6 +126,7 @@ static unsigned refcnt_lcore[RTE_MAX_LCORE];
  *
  * #. Test packet cloning
  *    - Clone a mbuf and verify the data
+ *    - Clone the cloned mbuf and verify the data
  */
 
 #define GOTO_FAIL(str, ...) do {                                       \
@@ -326,6 +327,7 @@ testclone_testupdate_testdetach(void)
 {
        struct rte_mbuf *m = NULL;
        struct rte_mbuf *clone = NULL;
+       struct rte_mbuf *clone2 = NULL;
        uint32_t *data;
 
        /* alloc a mbuf */
@@ -383,11 +385,35 @@ testclone_testupdate_testdetach(void)
        if (rte_mbuf_refcnt_read(m->next) != 2)
                GOTO_FAIL("invalid refcnt in m->next\n");
 
+       /* try to clone the clone */
+
+       clone2 = rte_pktmbuf_clone(clone, pktmbuf_pool);
+       if (clone2 == NULL)
+               GOTO_FAIL("cannot clone the clone\n");
+
+       data = rte_pktmbuf_mtod(clone2, uint32_t *);
+       if (*data != MAGIC_DATA)
+               GOTO_FAIL("invalid data in clone2\n");
+
+       data = rte_pktmbuf_mtod(clone2->next, uint32_t *);
+       if (*data != MAGIC_DATA)
+               GOTO_FAIL("invalid data in clone2->next\n");
+
+       if (rte_mbuf_refcnt_read(m) != 3)
+               GOTO_FAIL("invalid refcnt in m\n");
+
+       if (rte_mbuf_refcnt_read(m->next) != 3)
+               GOTO_FAIL("invalid refcnt in m->next\n");
+
        /* free mbuf */
        rte_pktmbuf_free(m);
        rte_pktmbuf_free(clone);
+       rte_pktmbuf_free(clone2);
+
        m = NULL;
        clone = NULL;
+       clone2 = NULL;
+       printf("%s ok\n", __func__);
        return 0;
 
 fail:
@@ -395,6 +421,8 @@ fail:
                rte_pktmbuf_free(m);
        if (clone)
                rte_pktmbuf_free(clone);
+       if (clone2)
+               rte_pktmbuf_free(clone2);
        return -1;
 }
 #undef GOTO_FAIL