app: add a test on mbuf alignment

Signed-off-by: Intel

diff --git a/app/test/test_mbuf.c b/app/test/test_mbuf.c
index 24b6895..3efad0f 100644 (file)
--- a/app/test/test_mbuf.c
+++ b/app/test/test_mbuf.c
@@ -458,7 +458,59 @@ test_pktmbuf_pool(void)
        return ret;
 }
 
+/*
+ * test that the pointer to the data on a packet mbuf is set properly
+ */
+static int
+test_pktmbuf_pool_ptr(void)
+{
+       unsigned i;
+       struct rte_mbuf *m[NB_MBUF];
+       int ret = 0;
+               
+       for (i=0; i<NB_MBUF; i++)
+               m[i] = NULL;
+
+       /* alloc NB_MBUF mbufs */
+       for (i=0; i<NB_MBUF; i++) {
+               m[i] = rte_pktmbuf_alloc(pktmbuf_pool);
+               if (m[i] == NULL) {
+                       printf("rte_pktmbuf_alloc() failed (%u)\n", i);
+                       ret = -1;
+               }
+               m[i]->pkt.data = RTE_PTR_ADD(m[i]->pkt.data, 64);
+       }
+
+       /* free them */
+       for (i=0; i<NB_MBUF; i++) {
+               if (m[i] != NULL)
+                       rte_pktmbuf_free(m[i]);
+       }
+       
+       for (i=0; i<NB_MBUF; i++)
+               m[i] = NULL;
+               
+       /* alloc NB_MBUF mbufs */
+       for (i=0; i<NB_MBUF; i++) {
+               m[i] = rte_pktmbuf_alloc(pktmbuf_pool);
+               if (m[i] == NULL) {
+                       printf("rte_pktmbuf_alloc() failed (%u)\n", i);
+                       ret = -1;
+               }
+               if (m[i]->pkt.data != RTE_PTR_ADD(m[i]->buf_addr, RTE_PKTMBUF_HEADROOM)) {
+                       printf ("pkt.data pointer not set properly\n");
+                       ret = -1;
+               }
+       }
 
+       /* free them */
+       for (i=0; i<NB_MBUF; i++) {
+               if (m[i] != NULL)
+                       rte_pktmbuf_free(m[i]);
+       }
+
+       return ret;
+}
 
 static int
 test_pktmbuf_free_segment(void)
@@ -812,6 +864,12 @@ test_mbuf(void)
                printf("test_mbuf_pool() failed (2)\n");
                return -1;
        }
+       
+       /* test that the pointer to the data on a packet mbuf is set properly */
+       if (test_pktmbuf_pool_ptr() < 0) {
+               printf("test_pktmbuf_pool_ptr() failed\n");
+               return -1;
+       }
 
        /* test data manipulation in mbuf */
        if (test_one_pktmbuf() < 0) {