examples/pipeline: add VXLAN encapsulation example
Add VXLAN encapsulation example to the SWX pipeline application. The VXLAN tunnels can be generated with the vxlan_table.py script. Example command line: ./build/pipeline -l0-1 -- -s ./examples/vxlan.cli Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
This commit is contained in:
Cristian Dumitrescu
David Marchand
parent
43821022a4
commit
fde7a77270
27
examples/pipeline/examples/vxlan.cli
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27
examples/pipeline/examples/vxlan.cli
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; SPDX-License-Identifier: BSD-3-Clause
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; Copyright(c) 2020 Intel Corporation
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mempool MEMPOOL0 buffer 2304 pool 32K cache 256 cpu 0
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link LINK0 dev 0000:18:00.0 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on
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link LINK1 dev 0000:18:00.1 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on
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link LINK2 dev 0000:3b:00.0 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on
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link LINK3 dev 0000:3b:00.1 rxq 1 128 MEMPOOL0 txq 1 512 promiscuous on
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pipeline PIPELINE0 create 0
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pipeline PIPELINE0 port in 0 link LINK0 rxq 0 bsz 32
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pipeline PIPELINE0 port in 1 link LINK1 rxq 0 bsz 32
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pipeline PIPELINE0 port in 2 link LINK2 rxq 0 bsz 32
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pipeline PIPELINE0 port in 3 link LINK3 rxq 0 bsz 32
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pipeline PIPELINE0 port out 0 link LINK0 txq 0 bsz 32
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pipeline PIPELINE0 port out 1 link LINK1 txq 0 bsz 32
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pipeline PIPELINE0 port out 2 link LINK2 txq 0 bsz 32
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pipeline PIPELINE0 port out 3 link LINK3 txq 0 bsz 32
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pipeline PIPELINE0 port out 4 sink none
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pipeline PIPELINE0 build ./examples/pipeline/examples/vxlan.spec
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pipeline PIPELINE0 table vxlan_table update ./examples/pipeline/examples/vxlan_table.txt none none
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thread 1 pipeline PIPELINE0 enable
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173
examples/pipeline/examples/vxlan.spec
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173
examples/pipeline/examples/vxlan.spec
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; SPDX-License-Identifier: BSD-3-Clause
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; Copyright(c) 2020 Intel Corporation
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//
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// Headers
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//
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struct ethernet_h {
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bit<48> dst_addr
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bit<48> src_addr
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bit<16> ethertype
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}
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struct ipv4_h {
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bit<8> ver_ihl
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bit<8> diffserv
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bit<16> total_len
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bit<16> identification
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bit<16> flags_offset
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bit<8> ttl
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bit<8> protocol
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bit<16> hdr_checksum
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bit<32> src_addr
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bit<32> dst_addr
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}
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struct udp_h {
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bit<16> src_port
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bit<16> dst_port
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bit<16> length
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bit<16> checksum
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}
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struct vxlan_h {
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bit<8> flags
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bit<24> reserved
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bit<24> vni
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bit<8> reserved2
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}
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header ethernet instanceof ethernet_h
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header ipv4 instanceof ipv4_h
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header outer_ethernet instanceof ethernet_h
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header outer_ipv4 instanceof ipv4_h
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header outer_udp instanceof udp_h
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header outer_vxlan instanceof vxlan_h
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//
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// Meta-data
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//
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struct metadata_t {
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bit<32> port_in
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bit<32> port_out
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}
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metadata instanceof metadata_t
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//
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// Actions
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//
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struct vxlan_encap_args_t {
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bit<48> ethernet_dst_addr
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bit<48> ethernet_src_addr
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bit<16> ethernet_ether_type
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bit<8> ipv4_ver_ihl
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bit<8> ipv4_diffserv
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bit<16> ipv4_total_len
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bit<16> ipv4_identification
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bit<16> ipv4_flags_offset
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bit<8> ipv4_ttl
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bit<8> ipv4_protocol
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bit<16> ipv4_hdr_checksum
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bit<32> ipv4_src_addr
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bit<32> ipv4_dst_addr
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bit<16> udp_src_port
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bit<16> udp_dst_port
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bit<16> udp_length
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bit<16> udp_checksum
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bit<8> vxlan_flags
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bit<24> vxlan_reserved
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bit<24> vxlan_vni
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bit<8> vxlan_reserved2
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bit<32> port_out
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}
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// Input frame:
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// Ethernet (14) | IPv4 (total_len)
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//
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// Output frame:
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// Ethernet (14) | IPv4 (20) | UDP (8) | VXLAN (8) | Input frame | Ethernet FCS (4)
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//
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// Note: The input frame has its FCS removed before encapsulation in the output
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// frame.
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//
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// Assumption: When read from the table, the outer IPv4 and UDP headers contain
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// the following fields:
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// - t.ipv4_total_len: Set to 50, which covers the length of:
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// - The outer IPv4 header (20 bytes);
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// - The outer UDP header (8 bytes);
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// - The outer VXLAN header (8 bytes);
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// - The inner Ethernet header (14 bytes);
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// - t.ipv4_hdr_checksum: Includes the above total length.
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// - t.udp_length: Set to 30, which covers the length of:
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// - The outer UDP header (8 bytes);
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// - The outer VXLAN header (8 bytes);
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// - The inner Ethernet header (14 bytes);
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// - t.udp_checksum: Set to 0.
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//
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// Once the total length of the inner IPv4 packet (h.ipv4.total_len) is known,
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// the outer IPv4 and UDP headers are updated as follows:
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// - h.outer_ipv4.total_len = t.ipv4_total_len + h.ipv4.total_len
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// - h.outer_ipv4.hdr_checksum = t.ipv4_hdr_checksum + h.ipv4.total_len
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// - h.outer_udp.length = t.udp_length + h.ipv4.total_len
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// - h.outer_udp.checksum: No change.
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//
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action vxlan_encap args instanceof vxlan_encap_args_t {
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//Copy from table entry to headers and metadata.
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dma h.outer_ethernet t.ethernet_dst_addr
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dma h.outer_ipv4 t.ipv4_ver_ihl
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dma h.outer_udp t.udp_src_port
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dma h.outer_vxlan t.vxlan_flags
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mov m.port_out t.port_out
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//Update h.outer_ipv4.total_len field.
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add h.outer_ipv4.total_len h.ipv4.total_len
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//Update h.outer_ipv4.hdr_checksum field.
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ckadd h.outer_ipv4.hdr_checksum h.ipv4.total_len
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//Update h.outer_udp.length field.
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add h.outer_udp.length h.ipv4.total_len
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return
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}
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action drop args none {
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mov m.port_out 4
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tx m.port_out
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}
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//
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// Tables.
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//
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table vxlan_table {
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key {
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h.ethernet.dst_addr exact
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}
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actions {
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vxlan_encap
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drop
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}
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default_action drop args none
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size 1048576
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}
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//
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// Pipeline.
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//
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apply {
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rx m.port_in
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extract h.ethernet
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extract h.ipv4
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table vxlan_table
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emit h.outer_ethernet
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emit h.outer_ipv4
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emit h.outer_udp
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emit h.outer_vxlan
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emit h.ethernet
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emit h.ipv4
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tx m.port_out
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}
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22
examples/pipeline/examples/vxlan_pcap.cli
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examples/pipeline/examples/vxlan_pcap.cli
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@ -0,0 +1,22 @@
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; SPDX-License-Identifier: BSD-3-Clause
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; Copyright(c) 2020 Intel Corporation
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mempool MEMPOOL0 buffer 2304 pool 32K cache 256 cpu 0
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pipeline PIPELINE0 create 0
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pipeline PIPELINE0 port in 0 source MEMPOOL0 ./examples/packet.pcap
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pipeline PIPELINE0 port in 1 source MEMPOOL0 ./examples/packet.pcap
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pipeline PIPELINE0 port in 2 source MEMPOOL0 ./examples/packet.pcap
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pipeline PIPELINE0 port in 3 source MEMPOOL0 ./examples/packet.pcap
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pipeline PIPELINE0 port out 0 sink none
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pipeline PIPELINE0 port out 1 sink none
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pipeline PIPELINE0 port out 2 sink none
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pipeline PIPELINE0 port out 3 sink none
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pipeline PIPELINE0 port out 4 sink none
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pipeline PIPELINE0 build ./examples/vxlan.spec
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pipeline PIPELINE0 table vxlan_table update ./examples/vxlan_table.txt none none
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thread 1 pipeline PIPELINE0 enable
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72
examples/pipeline/examples/vxlan_table.py
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examples/pipeline/examples/vxlan_table.py
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#!/usr/bin/env python3
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# SPDX-License-Identifier: BSD-3-Clause
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# Copyright(c) 2020 Intel Corporation
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#
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"""
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A Python program that generates the VXLAN tunnels for this example.
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"""
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import argparse
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DESCRIPTION = 'Table Generator'
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KEY = '0xaabbccdd{0:04x}'
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ACTION = 'vxlan_encap'
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ETHERNET_HEADER = 'ethernet_dst_addr N(0xa0a1a2a3{0:04x}) ' \
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'ethernet_src_addr N(0xb0b1b2b3{0:04x}) ' \
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'ethernet_ether_type N(0x0800)'
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IPV4_HEADER = 'ipv4_ver_ihl N(0x45) ' \
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'ipv4_diffserv N(0) ' \
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'ipv4_total_len N(50) ' \
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'ipv4_identification N(0) ' \
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'ipv4_flags_offset N(0) ' \
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'ipv4_ttl N(64) ' \
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'ipv4_protocol N(17) ' \
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'ipv4_hdr_checksum N(0x{1:04x}) ' \
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'ipv4_src_addr N(0xc0c1{0:04x}) ' \
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'ipv4_dst_addr N(0xd0d1{0:04x})'
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UDP_HEADER = 'udp_src_port N(0xe0{0:02x}) ' \
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'udp_dst_port N(4789) ' \
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'udp_length N(30) ' \
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'udp_checksum N(0)'
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VXLAN_HEADER = 'vxlan_flags N(0) ' \
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'vxlan_reserved N(0) ' \
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'vxlan_vni N({0:d}) ' \
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'vxlan_reserved2 N(0)'
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PORT_OUT = 'port_out H({0:d})'
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def ipv4_header_checksum(i):
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cksum = (0x4500 + 0x0032) + (0x0000 + 0x0000) + (0x4011 + 0x0000) + (0xc0c1 + i) + (0xd0d1 + i)
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cksum = (cksum & 0xFFFF) + (cksum >> 16)
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cksum = (cksum & 0xFFFF) + (cksum >> 16)
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cksum = ~cksum & 0xFFFF
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return cksum
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def table_generate(n, p):
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for i in range(0, n):
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print("match %s action %s %s %s %s %s %s" %
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(KEY.format(i), ACTION,
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ETHERNET_HEADER.format(i),
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IPV4_HEADER.format(i, ipv4_header_checksum(i)),
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UDP_HEADER.format(i % 256),
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VXLAN_HEADER.format(i),
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PORT_OUT.format(i % p)))
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description=DESCRIPTION)
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parser.add_argument(
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'-n',
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help='number of table entries (default: 65536)',
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required=False,
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default=65536)
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parser.add_argument(
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'-p',
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help='number of network ports (default: 4)',
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required=False,
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default=4)
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args = parser.parse_args()
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table_generate(int(args.n), int(args.p))
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16
examples/pipeline/examples/vxlan_table.txt
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16
examples/pipeline/examples/vxlan_table.txt
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@ -0,0 +1,16 @@
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match 0xaabbccdd0000 action vxlan_encap ethernet_dst_addr N(0xa0a1a2a30000) ethernet_src_addr N(0xb0b1b2b30000) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe928) ipv4_src_addr N(0xc0c10000) ipv4_dst_addr N(0xd0d10000) udp_src_port N(0xe000) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(0) vxlan_reserved2 N(0) port_out H(0)
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match 0xaabbccdd0001 action vxlan_encap ethernet_dst_addr N(0xa0a1a2a30001) ethernet_src_addr N(0xb0b1b2b30001) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe926) ipv4_src_addr N(0xc0c10001) ipv4_dst_addr N(0xd0d10001) udp_src_port N(0xe001) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(1) vxlan_reserved2 N(0) port_out H(1)
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match 0xaabbccdd0002 action vxlan_encap ethernet_dst_addr N(0xa0a1a2a30002) ethernet_src_addr N(0xb0b1b2b30002) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe924) ipv4_src_addr N(0xc0c10002) ipv4_dst_addr N(0xd0d10002) udp_src_port N(0xe002) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(2) vxlan_reserved2 N(0) port_out H(2)
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match 0xaabbccdd0003 action vxlan_encap ethernet_dst_addr N(0xa0a1a2a30003) ethernet_src_addr N(0xb0b1b2b30003) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe922) ipv4_src_addr N(0xc0c10003) ipv4_dst_addr N(0xd0d10003) udp_src_port N(0xe003) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(3) vxlan_reserved2 N(0) port_out H(3)
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match 0xaabbccdd0004 action vxlan_encap ethernet_dst_addr N(0xa0a1a2a30004) ethernet_src_addr N(0xb0b1b2b30004) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe920) ipv4_src_addr N(0xc0c10004) ipv4_dst_addr N(0xd0d10004) udp_src_port N(0xe004) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(4) vxlan_reserved2 N(0) port_out H(0)
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match 0xaabbccdd0005 action vxlan_encap ethernet_dst_addr N(0xa0a1a2a30005) ethernet_src_addr N(0xb0b1b2b30005) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe91e) ipv4_src_addr N(0xc0c10005) ipv4_dst_addr N(0xd0d10005) udp_src_port N(0xe005) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(5) vxlan_reserved2 N(0) port_out H(1)
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match 0xaabbccdd0006 action vxlan_encap ethernet_dst_addr N(0xa0a1a2a30006) ethernet_src_addr N(0xb0b1b2b30006) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe91c) ipv4_src_addr N(0xc0c10006) ipv4_dst_addr N(0xd0d10006) udp_src_port N(0xe006) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(6) vxlan_reserved2 N(0) port_out H(2)
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match 0xaabbccdd0007 action vxlan_encap ethernet_dst_addr N(0xa0a1a2a30007) ethernet_src_addr N(0xb0b1b2b30007) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe91a) ipv4_src_addr N(0xc0c10007) ipv4_dst_addr N(0xd0d10007) udp_src_port N(0xe007) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(7) vxlan_reserved2 N(0) port_out H(3)
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match 0xaabbccdd0008 action vxlan_encap ethernet_dst_addr N(0xa0a1a2a30008) ethernet_src_addr N(0xb0b1b2b30008) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe918) ipv4_src_addr N(0xc0c10008) ipv4_dst_addr N(0xd0d10008) udp_src_port N(0xe008) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(8) vxlan_reserved2 N(0) port_out H(0)
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||||
match 0xaabbccdd0009 action vxlan_encap ethernet_dst_addr N(0xa0a1a2a30009) ethernet_src_addr N(0xb0b1b2b30009) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe916) ipv4_src_addr N(0xc0c10009) ipv4_dst_addr N(0xd0d10009) udp_src_port N(0xe009) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(9) vxlan_reserved2 N(0) port_out H(1)
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||||
match 0xaabbccdd000a action vxlan_encap ethernet_dst_addr N(0xa0a1a2a3000a) ethernet_src_addr N(0xb0b1b2b3000a) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe914) ipv4_src_addr N(0xc0c1000a) ipv4_dst_addr N(0xd0d1000a) udp_src_port N(0xe00a) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(10) vxlan_reserved2 N(0) port_out H(2)
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||||
match 0xaabbccdd000b action vxlan_encap ethernet_dst_addr N(0xa0a1a2a3000b) ethernet_src_addr N(0xb0b1b2b3000b) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe912) ipv4_src_addr N(0xc0c1000b) ipv4_dst_addr N(0xd0d1000b) udp_src_port N(0xe00b) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(11) vxlan_reserved2 N(0) port_out H(3)
|
||||
match 0xaabbccdd000c action vxlan_encap ethernet_dst_addr N(0xa0a1a2a3000c) ethernet_src_addr N(0xb0b1b2b3000c) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe910) ipv4_src_addr N(0xc0c1000c) ipv4_dst_addr N(0xd0d1000c) udp_src_port N(0xe00c) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(12) vxlan_reserved2 N(0) port_out H(0)
|
||||
match 0xaabbccdd000d action vxlan_encap ethernet_dst_addr N(0xa0a1a2a3000d) ethernet_src_addr N(0xb0b1b2b3000d) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe90e) ipv4_src_addr N(0xc0c1000d) ipv4_dst_addr N(0xd0d1000d) udp_src_port N(0xe00d) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(13) vxlan_reserved2 N(0) port_out H(1)
|
||||
match 0xaabbccdd000e action vxlan_encap ethernet_dst_addr N(0xa0a1a2a3000e) ethernet_src_addr N(0xb0b1b2b3000e) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe90c) ipv4_src_addr N(0xc0c1000e) ipv4_dst_addr N(0xd0d1000e) udp_src_port N(0xe00e) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(14) vxlan_reserved2 N(0) port_out H(2)
|
||||
match 0xaabbccdd000f action vxlan_encap ethernet_dst_addr N(0xa0a1a2a3000f) ethernet_src_addr N(0xb0b1b2b3000f) ethernet_ether_type N(0x0800) ipv4_ver_ihl N(0x45) ipv4_diffserv N(0) ipv4_total_len N(50) ipv4_identification N(0) ipv4_flags_offset N(0) ipv4_ttl N(64) ipv4_protocol N(17) ipv4_hdr_checksum N(0xe90a) ipv4_src_addr N(0xc0c1000f) ipv4_dst_addr N(0xd0d1000f) udp_src_port N(0xe00f) udp_dst_port N(4789) udp_length N(30) udp_checksum N(0) vxlan_flags N(0) vxlan_reserved N(0) vxlan_vni N(15) vxlan_reserved2 N(0) port_out H(3)
|
||||
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Reference in New Issue
Block a user