As there are only 6 bit flags in ol_flags for indicating packet
types, which is not enough to describe all the possible packet
types hardware can recognize. For example, i40e hardware can
recognize more than 150 packet types. Unified packet type is
composed of L2 type, L3 type, L4 type, tunnel type, inner L2 type,
inner L3 type and inner L4 type fields, and can be stored in
'struct rte_mbuf' of 32 bits field 'packet_type'.
Signed-off-by: Helin Zhang
---
lib/librte_mbuf/rte_mbuf.h | 253 +
1 file changed, 253 insertions(+)
v3 changes:
* Put the definitions of unified packet type into a single patch.
v4 changes:
* Added detailed description of each packet types.
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index f5b7a8b..8de57fd 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -194,6 +194,259 @@ extern "C" {
/* Use final bit of flags to indicate a control mbuf */
#define CTRL_MBUF_FLAG (1ULL << 63) /**< Mbuf contains control data */
+/*
+ * 32 bits are divided into several fields to mark packet types. Note that
+ * each field is indexical.
+ * - Bit 3:0 is for L2 types.
+ * - Bit 7:4 is for L3 or outer L3 (for tunneling case) types.
+ * - Bit 11:8 is for L4 or outer L4 (for tunneling case) types.
+ * - Bit 15:12 is for tunnel types.
+ * - Bit 19:16 is for inner L2 types.
+ * - Bit 23:20 is for inner L3 types.
+ * - Bit 27:24 is for inner L4 types.
+ * - Bit 31:28 is reserved.
+ *
+ * To be compatible with Vector PMD, RTE_PTYPE_L3_IPV4, RTE_PTYPE_L3_IPV4_EXT,
+ * RTE_PTYPE_L3_IPV6, RTE_PTYPE_L3_IPV6_EXT, RTE_PTYPE_L4_TCP, RTE_PTYPE_L4_UDP
+ * and RTE_PTYPE_L4_SCTP should be kept as below in a contiguous 7 bits.
+ *
+ * Note that L3 types values are selected for checking IPV4/IPV6 header from
+ * performance point of view. Reading annotations of RTE_ETH_IS_IPV4_HDR and
+ * RTE_ETH_IS_IPV6_HDR is needed for any future changes of L3 type values.
+ */
+#define RTE_PTYPE_UNKNOWN 0x
+/**
+ * MAC (Media Access Control) packet type.
+ * It is used for outer packet for tunneling cases.
+ */
+#define RTE_PTYPE_L2_MAC0x0001
+/**
+ * MAC (Media Access Control) packet type for time sync.
+ */
+#define RTE_PTYPE_L2_MAC_TIMESYNC 0x0002
+/**
+ * ARP (Address Resolution Protocol) packet type.
+ */
+#define RTE_PTYPE_L2_ARP0x0003
+/**
+ * LLDP (Link Layer Discovery Protocol) packet type.
+ */
+#define RTE_PTYPE_L2_LLDP 0x0004
+/**
+ * Mask of layer 2 packet types.
+ * It is used for outer packet for tunneling cases.
+ */
+#define RTE_PTYPE_L2_MASK 0x000f
+/**
+ * IP (Internet Protocol) version 4 packet type.
+ * It is used for outer packet for tunneling cases, and does not contain any
+ * header option.
+ */
+#define RTE_PTYPE_L3_IPV4 0x0010
+/**
+ * IP (Internet Protocol) version 4 packet type.
+ * It is used for outer packet for tunneling cases, and contains header
+ * options.
+ */
+#define RTE_PTYPE_L3_IPV4_EXT 0x0030
+/**
+ * IP (Internet Protocol) version 6 packet type.
+ * It is used for outer packet for tunneling cases, and does not contain any
+ * extension header.
+ */
+#define RTE_PTYPE_L3_IPV6 0x0040
+/**
+ * IP (Internet Protocol) version 4 packet type.
+ * It is used for outer packet for tunneling cases, and may or maynot contain
+ * header options.
+ */
+#define RTE_PTYPE_L3_IPV4_EXT_UNKNOWN 0x0090
+/**
+ * IP (Internet Protocol) version 6 packet type.
+ * It is used for outer packet for tunneling cases, and contains extension
+ * headers.
+ */
+#define RTE_PTYPE_L3_IPV6_EXT 0x00c0
+/**
+ * IP (Internet Protocol) version 6 packet type.
+ * It is used for outer packet for tunneling cases, and may or maynot contain
+ * extension headers.
+ */
+#define RTE_PTYPE_L3_IPV6_EXT_UNKNOWN 0x00e0
+/**
+ * Mask of layer 3 packet types.
+ * It is used for outer packet for tunneling cases.
+ */
+#define RTE_PTYPE_L3_MASK 0x00f0
+/**
+ * TCP (Transmission Control Protocol) packet type.
+ * It is used for outer packet for tunneling cases.
+ */
+#define RTE_PTYPE_L4_TCP0x0100
+/**
+ * UDP (User Datagram Protocol) packet type.
+ * It is used for outer packet for tunneling cases.
+ */
+#define RTE_PTYPE_L4_UDP0x0200
+/**
+ * Fragmented IP (Internet Protocol) packet type.
+ * It is used for outer packet for tunneling cases.
+ */
+#define RTE_PTYPE_L4_FRAG 0x0300
+/**
+ * SCTP (Stream Control Transmission Protocol) packet type.
+ * It is used for outer packet for tunneling cases.
+ */
+#define RTE_PTYPE_L4_SCTP 0x0400
+/**
+ * ICMP (Internet Control Message Protocol) packet type.
+ * It is used for outer packet for tunneling cases.
+ */
+#define RTE_PTYPE_L4_ICMP
