mbuf: add Tx side tunneling type

[dpdk.git] / lib / librte_mbuf / rte_mbuf.h

diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index 85a653c..002e86b 100644 (file)
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -128,6 +128,18 @@ extern "C" {
 
 /* add new TX flags here */
 
+/**
+ * Bits 45:48 used for the tunnel type.
+ * When doing Tx offload like TSO or checksum, the HW needs to configure the
+ * tunnel type into the HW descriptors.
+ */
+#define PKT_TX_TUNNEL_VXLAN   (0x1ULL << 45)
+#define PKT_TX_TUNNEL_GRE     (0x2ULL << 45)
+#define PKT_TX_TUNNEL_IPIP    (0x3ULL << 45)
+#define PKT_TX_TUNNEL_GENEVE  (0x4ULL << 45)
+/* add new TX TUNNEL type here */
+#define PKT_TX_TUNNEL_MASK    (0xFULL << 45)
+
 /**
  * Second VLAN insertion (QinQ) flag.
  */
@@ -872,7 +884,10 @@ struct rte_mbuf {
                uint64_t tx_offload;       /**< combined for easy fetch */
                __extension__
                struct {
-                       uint64_t l2_len:7; /**< L2 (MAC) Header Length. */
+                       uint64_t l2_len:7;
+                       /**< L2 (MAC) Header Length for non-tunneling pkt.
+                        * Outer_L4_len + ... + Inner_L2_len for tunneling pkt.
+                        */
                        uint64_t l3_len:9; /**< L3 (IP) Header Length. */
                        uint64_t l4_len:8; /**< L4 (TCP/UDP) Header Length. */
                        uint64_t tso_segsz:16; /**< TCP TSO segment size */