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From: Olivier Matz <olivier.matz@6wind.com>
To: dev@dpdk.org
Date: Tue, 21 Apr 2015 11:55:21 +0200
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Subject: [dpdk-dev] [PATCH v5 11/12] test/mbuf: enhance mbuf refcnt test
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Check that the data in the cloned mbuf is the same than in the
reference mbuf.
Check that the reference counter is incremented for each segment.
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
app/test/test_mbuf.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/app/test/test_mbuf.c b/app/test/test_mbuf.c
index 2614598..01838c6 100644
--- a/app/test/test_mbuf.c
+++ b/app/test/test_mbuf.c
@@ -75,6 +75,8 @@
#define REFCNT_MBUF_NUM 64
#define REFCNT_RING_SIZE (REFCNT_MBUF_NUM * REFCNT_MAX_REF)
+#define MAGIC_DATA 0x42424242
+
#define MAKE_STRING(x) # x
static struct rte_mempool *pktmbuf_pool = NULL;
@@ -322,6 +324,7 @@ testclone_testupdate_testdetach(void)
{
struct rte_mbuf *m = NULL;
struct rte_mbuf *clone = NULL;
+ uint32_t *data;
/* alloc a mbuf */
m = rte_pktmbuf_alloc(pktmbuf_pool);
@@ -331,21 +334,53 @@ testclone_testupdate_testdetach(void)
if (rte_pktmbuf_pkt_len(m) != 0)
GOTO_FAIL("Bad length");
+ rte_pktmbuf_append(m, sizeof(uint32_t));
+ data = rte_pktmbuf_mtod(m, uint32_t *);
+ *data = MAGIC_DATA;
/* clone the allocated mbuf */
clone = rte_pktmbuf_clone(m, pktmbuf_pool);
if (clone == NULL)
GOTO_FAIL("cannot clone data\n");
+
+ data = rte_pktmbuf_mtod(clone, uint32_t *);
+ if (*data != MAGIC_DATA)
+ GOTO_FAIL("invalid data in clone\n");
+
+ if (rte_mbuf_refcnt_read(m) != 2)
+ GOTO_FAIL("invalid refcnt in m\n");
+
+ /* free the clone */
rte_pktmbuf_free(clone);
+ clone = NULL;
+ /* same test with a chained mbuf */
m->next = rte_pktmbuf_alloc(pktmbuf_pool);
if (m->next == NULL)
GOTO_FAIL("Next Pkt Null\n");
+ rte_pktmbuf_append(m->next, sizeof(uint32_t));
+ data = rte_pktmbuf_mtod(m->next, uint32_t *);
+ *data = MAGIC_DATA;
+
clone = rte_pktmbuf_clone(m, pktmbuf_pool);
if (clone == NULL)
GOTO_FAIL("cannot clone data\n");
+ data = rte_pktmbuf_mtod(clone, uint32_t *);
+ if (*data != MAGIC_DATA)
+ GOTO_FAIL("invalid data in clone\n");
+
+ data = rte_pktmbuf_mtod(clone->next, uint32_t *);
+ if (*data != MAGIC_DATA)
+ GOTO_FAIL("invalid data in clone->next\n");
+
+ if (rte_mbuf_refcnt_read(m) != 2)
+ GOTO_FAIL("invalid refcnt in m\n");
+
+ if (rte_mbuf_refcnt_read(m->next) != 2)
+ GOTO_FAIL("invalid refcnt in m->next\n");
+
/* free mbuf */
rte_pktmbuf_free(m);
rte_pktmbuf_free(clone);
@@ -356,6 +391,8 @@ testclone_testupdate_testdetach(void)
fail:
if (m)
rte_pktmbuf_free(m);
+ if (clone)
+ rte_pktmbuf_free(clone);
return -1;
}
#undef GOTO_FAIL
--
2.1.4