+#define PKT_RX_SEC_OFFLOAD (1ULL << 18)
+
+/**
+ * Indicate that security offload processing failed on the RX packet.
+ */
+#define PKT_RX_SEC_OFFLOAD_FAILED (1ULL << 19)
+
+/**
+ * The RX packet is a double VLAN, and the outer tci has been
+ * saved in in mbuf->vlan_tci_outer.
+ * If the flag PKT_RX_QINQ_STRIPPED is also present, both VLANs
+ * headers have been stripped from mbuf data, else they are still
+ * present.
+ */
+#define PKT_RX_QINQ (1ULL << 20)
+
+/* add new RX flags here */
+
+/* add new TX flags here */
+
+/**
+ * UDP Fragmentation Offload flag. This flag is used for enabling UDP
+ * fragmentation in SW or in HW. When use UFO, mbuf->tso_segsz is used
+ * to store the MSS of UDP fragments.
+ */
+#define PKT_TX_UDP_SEG (1ULL << 42)
+
+/**
+ * Request security offload processing on the TX packet.
+ */
+#define PKT_TX_SEC_OFFLOAD (1ULL << 43)
+
+/**
+ * Offload the MACsec. This flag must be set by the application to enable
+ * this offload feature for a packet to be transmitted.
+ */
+#define PKT_TX_MACSEC (1ULL << 44)
+
+/**
+ * Bits 45:48 used for the tunnel type.
+ * The tunnel type must be specified for TSO or checksum on the inner part
+ * of tunnel packets.
+ * These flags can be used with PKT_TX_TCP_SEG for TSO, or PKT_TX_xxx_CKSUM.
+ * The mbuf fields for inner and outer header lengths are required:
+ * outer_l2_len, outer_l3_len, l2_len, l3_len, l4_len and tso_segsz for TSO.
+ */
+#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)
+/** TX packet with MPLS-in-UDP RFC 7510 header. */
+#define PKT_TX_TUNNEL_MPLSINUDP (0x5ULL << 45)
+#define PKT_TX_TUNNEL_VXLAN_GPE (0x6ULL << 45)
+/**
+ * Generic IP encapsulated tunnel type, used for TSO and checksum offload.
+ * It can be used for tunnels which are not standards or listed above.
+ * It is preferred to use specific tunnel flags like PKT_TX_TUNNEL_GRE
+ * or PKT_TX_TUNNEL_IPIP if possible.
+ * The ethdev must be configured with DEV_TX_OFFLOAD_IP_TNL_TSO.
+ * Outer and inner checksums are done according to the existing flags like
+ * PKT_TX_xxx_CKSUM.
+ * Specific tunnel headers that contain payload length, sequence id
+ * or checksum are not expected to be updated.
+ */
+#define PKT_TX_TUNNEL_IP (0xDULL << 45)
+/**
+ * Generic UDP encapsulated tunnel type, used for TSO and checksum offload.
+ * UDP tunnel type implies outer IP layer.
+ * It can be used for tunnels which are not standards or listed above.
+ * It is preferred to use specific tunnel flags like PKT_TX_TUNNEL_VXLAN
+ * if possible.
+ * The ethdev must be configured with DEV_TX_OFFLOAD_UDP_TNL_TSO.
+ * Outer and inner checksums are done according to the existing flags like
+ * PKT_TX_xxx_CKSUM.
+ * Specific tunnel headers that contain payload length, sequence id
+ * or checksum are not expected to be updated.
+ */
+#define PKT_TX_TUNNEL_UDP (0xEULL << 45)
+/* add new TX TUNNEL type here */
+#define PKT_TX_TUNNEL_MASK (0xFULL << 45)
+
+/**
+ * Second VLAN insertion (QinQ) flag.
+ */
+#define PKT_TX_QINQ (1ULL << 49) /**< TX packet with double VLAN inserted. */
+/* this old name is deprecated */
+#define PKT_TX_QINQ_PKT PKT_TX_QINQ
+
+/**
+ * TCP segmentation offload. To enable this offload feature for a
+ * packet to be transmitted on hardware supporting TSO:
+ * - set the PKT_TX_TCP_SEG flag in mbuf->ol_flags (this flag implies
+ * PKT_TX_TCP_CKSUM)
+ * - set the flag PKT_TX_IPV4 or PKT_TX_IPV6
+ * - if it's IPv4, set the PKT_TX_IP_CKSUM flag
+ * - fill the mbuf offload information: l2_len, l3_len, l4_len, tso_segsz
+ */
+#define PKT_TX_TCP_SEG (1ULL << 50)
+
+#define PKT_TX_IEEE1588_TMST (1ULL << 51) /**< TX IEEE1588 packet to timestamp. */
+
+/**
+ * Bits 52+53 used for L4 packet type with checksum enabled: 00: Reserved,
+ * 01: TCP checksum, 10: SCTP checksum, 11: UDP checksum. To use hardware
+ * L4 checksum offload, the user needs to:
+ * - fill l2_len and l3_len in mbuf
+ * - set the flags PKT_TX_TCP_CKSUM, PKT_TX_SCTP_CKSUM or PKT_TX_UDP_CKSUM
+ * - set the flag PKT_TX_IPV4 or PKT_TX_IPV6
+ */
+#define PKT_TX_L4_NO_CKSUM (0ULL << 52) /**< Disable L4 cksum of TX pkt. */
+#define PKT_TX_TCP_CKSUM (1ULL << 52) /**< TCP cksum of TX pkt. computed by NIC. */
+#define PKT_TX_SCTP_CKSUM (2ULL << 52) /**< SCTP cksum of TX pkt. computed by NIC. */
+#define PKT_TX_UDP_CKSUM (3ULL << 52) /**< UDP cksum of TX pkt. computed by NIC. */
+#define PKT_TX_L4_MASK (3ULL << 52) /**< Mask for L4 cksum offload request. */
+
+/**
+ * Offload the IP checksum in the hardware. The flag PKT_TX_IPV4 should
+ * also be set by the application, although a PMD will only check
+ * PKT_TX_IP_CKSUM.
+ * - fill the mbuf offload information: l2_len, l3_len
+ */
+#define PKT_TX_IP_CKSUM (1ULL << 54)
+
+/**
+ * Packet is IPv4. This flag must be set when using any offload feature
+ * (TSO, L3 or L4 checksum) to tell the NIC that the packet is an IPv4
+ * packet. If the packet is a tunneled packet, this flag is related to
+ * the inner headers.
+ */
+#define PKT_TX_IPV4 (1ULL << 55)
+
+/**
+ * Packet is IPv6. This flag must be set when using an offload feature
+ * (TSO or L4 checksum) to tell the NIC that the packet is an IPv6
+ * packet. If the packet is a tunneled packet, this flag is related to
+ * the inner headers.
+ */
+#define PKT_TX_IPV6 (1ULL << 56)
+
+/**
+ * TX packet is a 802.1q VLAN packet.
+ */
+#define PKT_TX_VLAN (1ULL << 57)
+/* this old name is deprecated */
+#define PKT_TX_VLAN_PKT PKT_TX_VLAN
+
+/**
+ * Offload the IP checksum of an external header in the hardware. The
+ * flag PKT_TX_OUTER_IPV4 should also be set by the application, although
+ * a PMD will only check PKT_TX_OUTER_IP_CKSUM.
+ * - fill the mbuf offload information: outer_l2_len, outer_l3_len
+ */
+#define PKT_TX_OUTER_IP_CKSUM (1ULL << 58)
+
+/**
+ * Packet outer header is IPv4. This flag must be set when using any
+ * outer offload feature (L3 or L4 checksum) to tell the NIC that the
+ * outer header of the tunneled packet is an IPv4 packet.
+ */
+#define PKT_TX_OUTER_IPV4 (1ULL << 59)
+
+/**
+ * Packet outer header is IPv6. This flag must be set when using any
+ * outer offload feature (L4 checksum) to tell the NIC that the outer
+ * header of the tunneled packet is an IPv6 packet.
+ */
+#define PKT_TX_OUTER_IPV6 (1ULL << 60)
+
+/**
+ * Bitmask of all supported packet Tx offload features flags,
+ * which can be set for packet.
+ */
+#define PKT_TX_OFFLOAD_MASK ( \
+ PKT_TX_IP_CKSUM | \
+ PKT_TX_L4_MASK | \
+ PKT_TX_OUTER_IP_CKSUM | \
+ PKT_TX_TCP_SEG | \
+ PKT_TX_IEEE1588_TMST | \
+ PKT_TX_QINQ_PKT | \
+ PKT_TX_VLAN_PKT | \
+ PKT_TX_TUNNEL_MASK | \
+ PKT_TX_MACSEC | \
+ PKT_TX_SEC_OFFLOAD)
+
+/**
+ * Mbuf having an external buffer attached. shinfo in mbuf must be filled.
+ */
+#define EXT_ATTACHED_MBUF (1ULL << 61)
+
+#define IND_ATTACHED_MBUF (1ULL << 62) /**< Indirect attached mbuf */
+
+/** Alignment constraint of mbuf private area. */
+#define RTE_MBUF_PRIV_ALIGN 8
+
+/**
+ * Get the name of a RX offload flag
+ *
+ * @param mask
+ * The mask describing the flag.
+ * @return
+ * The name of this flag, or NULL if it's not a valid RX flag.
+ */
+const char *rte_get_rx_ol_flag_name(uint64_t mask);
+
+/**
+ * Dump the list of RX offload flags in a buffer
+ *
+ * @param mask
+ * The mask describing the RX flags.
+ * @param buf
+ * The output buffer.
+ * @param buflen
+ * The length of the buffer.
+ * @return
+ * 0 on success, (-1) on error.
+ */
+int rte_get_rx_ol_flag_list(uint64_t mask, char *buf, size_t buflen);
+
+/**
+ * Get the name of a TX offload flag
+ *
+ * @param mask
+ * The mask describing the flag. Usually only one bit must be set.
+ * Several bits can be given if they belong to the same mask.
+ * Ex: PKT_TX_L4_MASK.
+ * @return
+ * The name of this flag, or NULL if it's not a valid TX flag.
+ */
+const char *rte_get_tx_ol_flag_name(uint64_t mask);
+
+/**
+ * Dump the list of TX offload flags in a buffer
+ *
+ * @param mask
+ * The mask describing the TX flags.
+ * @param buf
+ * The output buffer.
+ * @param buflen
+ * The length of the buffer.
+ * @return
+ * 0 on success, (-1) on error.
+ */
+int rte_get_tx_ol_flag_list(uint64_t mask, char *buf, size_t buflen);
+
+/**
+ * Some NICs need at least 2KB buffer to RX standard Ethernet frame without
+ * splitting it into multiple segments.
+ * So, for mbufs that planned to be involved into RX/TX, the recommended
+ * minimal buffer length is 2KB + RTE_PKTMBUF_HEADROOM.
+ */
+#define RTE_MBUF_DEFAULT_DATAROOM 2048
+#define RTE_MBUF_DEFAULT_BUF_SIZE \
+ (RTE_MBUF_DEFAULT_DATAROOM + RTE_PKTMBUF_HEADROOM)