From 7fff3d205463d5e0a95d6bdd337100988ef323a3 Mon Sep 17 00:00:00 2001 From: Dave Barach Date: Tue, 27 Nov 2018 16:52:59 -0500 Subject: Metadata / opaque formatting belongs in vpp VPP graph dispatch trace record description: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Major Version | Minor Version | NStrings | ProtoHint | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer index (big endian) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + VPP graph node name ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer Metadata ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer Opaque ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer Opaque 2 ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | VPP ASCII packet trace (if NStrings > 4) | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Packet data (up to 16K) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Graph dispatch records comprise a version stamp, an indication of how many NULL-terminated strings will follow the record header, and a protocol hint. The buffer index allows downstream consumers of these data to easily filter/track single packets as they traverse the forwarding graph. FWIW, the 32-bit buffer index is stored in big endian format. As of this writing, major version = 1, minor version = 0. Nstrings will be either 4 or 5. Here is the current set of protocol hints: typedef enum { VLIB_NODE_PROTO_HINT_NONE = 0, VLIB_NODE_PROTO_HINT_ETHERNET, VLIB_NODE_PROTO_HINT_IP4, VLIB_NODE_PROTO_HINT_IP6, VLIB_NODE_PROTO_HINT_TCP, VLIB_NODE_PROTO_HINT_UDP, VLIB_NODE_N_PROTO_HINTS, } vlib_node_proto_hint_t; Example: VLIB_NODE_PROTO_HINT_IP6 means that the first octet of packet data SHOULD be 0x60, and should begin an ipv6 packet header. Change-Id: Idf310bad80cc0e4207394c80f18db5f77c378741 Signed-off-by: Dave Barach --- src/vnet/buffer.h | 44 ++++++++++++++++++++++---------------------- 1 file changed, 22 insertions(+), 22 deletions(-) (limited to 'src/vnet/buffer.h') diff --git a/src/vnet/buffer.h b/src/vnet/buffer.h index 8071081faf7..d701e21141d 100644 --- a/src/vnet/buffer.h +++ b/src/vnet/buffer.h @@ -45,40 +45,40 @@ /** * Flags that are set in the high order bits of ((vlib_buffer*)b)->flags */ -#define foreach_vnet_buffer_flag \ - _( 1, L4_CHECKSUM_COMPUTED, "l4-cksum-computed") \ - _( 2, L4_CHECKSUM_CORRECT, "l4-cksum-correct") \ - _( 3, VLAN_2_DEEP, "vlan-2-deep") \ - _( 4, VLAN_1_DEEP, "vlan-1-deep") \ - _( 5, SPAN_CLONE, "span-clone") \ - _( 6, LOOP_COUNTER_VALID, 0) \ - _( 7, LOCALLY_ORIGINATED, "local") \ - _( 8, IS_IP4, "ip4") \ - _( 9, IS_IP6, "ip6") \ - _(10, OFFLOAD_IP_CKSUM, "offload-ip-cksum") \ - _(11, OFFLOAD_TCP_CKSUM, "offload-tcp-cksum") \ - _(12, OFFLOAD_UDP_CKSUM, "offload-udp-cksum") \ - _(13, IS_NATED, "nated") \ - _(14, L2_HDR_OFFSET_VALID, 0) \ - _(15, L3_HDR_OFFSET_VALID, 0) \ - _(16, L4_HDR_OFFSET_VALID, 0) \ - _(17, FLOW_REPORT, "flow-report") \ - _(18, IS_DVR, "dvr") \ - _(19, QOS_DATA_VALID, 0) +#define foreach_vnet_buffer_flag \ + _( 1, L4_CHECKSUM_COMPUTED, "l4-cksum-computed", 1) \ + _( 2, L4_CHECKSUM_CORRECT, "l4-cksum-correct", 1) \ + _( 3, VLAN_2_DEEP, "vlan-2-deep", 1) \ + _( 4, VLAN_1_DEEP, "vlan-1-deep", 1) \ + _( 5, SPAN_CLONE, "span-clone", 1) \ + _( 6, LOOP_COUNTER_VALID, "loop-counter-valid", 0) \ + _( 7, LOCALLY_ORIGINATED, "local", 1) \ + _( 8, IS_IP4, "ip4", 1) \ + _( 9, IS_IP6, "ip6", 1) \ + _(10, OFFLOAD_IP_CKSUM, "offload-ip-cksum", 1) \ + _(11, OFFLOAD_TCP_CKSUM, "offload-tcp-cksum", 1) \ + _(12, OFFLOAD_UDP_CKSUM, "offload-udp-cksum", 1) \ + _(13, IS_NATED, "natted", 1) \ + _(14, L2_HDR_OFFSET_VALID, "l2_hdr_offset_valid", 0) \ + _(15, L3_HDR_OFFSET_VALID, "l3_hdr_offset_valid", 0) \ + _(16, L4_HDR_OFFSET_VALID, "l4_hdr_offset_valid", 0) \ + _(17, FLOW_REPORT, "flow-report", 1) \ + _(18, IS_DVR, "dvr", 1) \ + _(19, QOS_DATA_VALID, "qos-data-valid", 0) #define VNET_BUFFER_FLAGS_VLAN_BITS \ (VNET_BUFFER_F_VLAN_1_DEEP | VNET_BUFFER_F_VLAN_2_DEEP) enum { -#define _(bit, name, v) VNET_BUFFER_F_##name = (1 << LOG2_VLIB_BUFFER_FLAG_USER(bit)), +#define _(bit, name, s, v) VNET_BUFFER_F_##name = (1 << LOG2_VLIB_BUFFER_FLAG_USER(bit)), foreach_vnet_buffer_flag #undef _ }; enum { -#define _(bit, name, v) VNET_BUFFER_F_LOG2_##name = LOG2_VLIB_BUFFER_FLAG_USER(bit), +#define _(bit, name, s, v) VNET_BUFFER_F_LOG2_##name = LOG2_VLIB_BUFFER_FLAG_USER(bit), foreach_vnet_buffer_flag #undef _ }; -- cgit 1.2.3-korg