test/mbuf: skip field registration at busy offset

[ upstream commit 530de86 ]

There is a test for dynamic field registration at a specific offset.
Depending on which driver is probed, some dynamic fields may be
already registered at this offset.
This failure is skipped with a warning.

Fixes: 4958ca3 ("mbuf: support dynamic fields and flags")

Reported-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Reviewed-by: David Marchand <david.marchand@redhat.com>

app/test/test_mbuf.c

@@ -2481,9 +2481,13 @@ test_mbuf_dyn(struct rte_mempool *pktmbuf_pool)
 
 	offset3 = rte_mbuf_dynfield_register_offset(&dynfield3,
 				offsetof(struct rte_mbuf, dynfield1[1]));
-	if (offset3 != offsetof(struct rte_mbuf, dynfield1[1]))
-		GOTO_FAIL("failed to register dynamic field 3, offset=%d: %s",
-			offset3, strerror(errno));
+	if (offset3 != offsetof(struct rte_mbuf, dynfield1[1])) {
+		if (rte_errno == EBUSY)
+			printf("mbuf test error skipped: dynfield is busy\n");
+		else
+			GOTO_FAIL("failed to register dynamic field 3, offset="
+				"%d: %s", offset3, strerror(errno));
+	}
 
 	printf("dynfield: offset=%d, offset2=%d, offset3=%d\n",
 		offset, offset2, offset3);