[dpdk-dev] [PATCH v3 5/5] test/mbuf: verify that cloning a clone works properly

[Olivier Matz]

From: Olivier Matz <olivier.m...@6wind.com>

Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
---
 app/test/test_mbuf.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/app/test/test_mbuf.c b/app/test/test_mbuf.c
index 9d8ee4e..e59aedc 100644
--- a/app/test/test_mbuf.c
+++ b/app/test/test_mbuf.c
@@ -325,6 +325,7 @@ 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 */
@@ -382,11 +383,34 @@ 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;
        return 0;

 fail:
@@ -394,6 +418,8 @@ fail:
                rte_pktmbuf_free(m);
        if (clone)
                rte_pktmbuf_free(clone);
+       if (clone2)
+               rte_pktmbuf_free(clone2);
        return -1;
 }
 #undef GOTO_FAIL
-- 
2.1.4