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-rw-r--r--src/vnet/devices/dpdk/dpdk_priv.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/vnet/devices/dpdk/dpdk_priv.h b/src/vnet/devices/dpdk/dpdk_priv.h
index 0c81dbc3beb..dd40ff48510 100644
--- a/src/vnet/devices/dpdk/dpdk_priv.h
+++ b/src/vnet/devices/dpdk/dpdk_priv.h
@@ -13,6 +13,9 @@
* limitations under the License.
*/
+#define rte_mbuf_from_vlib_buffer(x) (((struct rte_mbuf *)x) - 1)
+#define vlib_buffer_from_rte_mbuf(x) ((vlib_buffer_t *)(x+1))
+
#define DPDK_NB_RX_DESC_DEFAULT 1024
#define DPDK_NB_TX_DESC_DEFAULT 1024
#define DPDK_NB_RX_DESC_VIRTIO 256