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Tunnel Offload API provides hardware independent, unified model to offload tunneled traffic. Key model elements are: - apply matches to both outer and inner packet headers during entire offload procedure; - restore outer header of partially offloaded packet; - model is implemented as a set of helper functions. Implementation details: * Create application tunnel: flow tunnel create <port> type <tunnel type> On success, the command creates application tunnel object and returns the tunnel descriptor. Tunnel descriptor is used in subsequent flow creation commands to reference the tunnel. * Create tunnel steering flow rule: tunnel_set <tunnel descriptor> parameter used with steering rule template. * Create tunnel matching flow rule: tunnel_match <tunnel descriptor> used with matching rule template. * If tunnel steering rule was offloaded, outer header of a partially offloaded packet is restored after miss. Example: test packet= <Ether dst=24:8a:07:8d:ae:d6 src=50:6b:4b:cc:fc:e2 type=IPv4 | <IP version=4 ihl=5 proto=udp src=1.1.1.1 dst=1.1.1.10 | <UDP sport=4789 dport=4789 len=58 chksum=0x7f7b | <VXLAN NextProtocol=Ethernet vni=0x0 | <Ether dst=24:aa:aa:aa:aa:d6 src=50:bb:bb:bb:bb:e2 type=IPv4 | <IP version=4 ihl=5 proto=icmp src=2.2.2.2 dst=2.2.2.200 | <ICMP type=echo-request code=0 chksum=0xf7ff id=0x0 seq=0x0 |>>>>>>> >>> len(packet) 92 testpmd> flow flush 0 testpmd> port 0/queue 0: received 1 packets src=50:6B:4B:CC:FC:E2 - dst=24:8A:07:8D:AE:D6 - type=0x0800 - length=92 testpmd> flow tunnel 0 type vxlan port 0: flow tunnel #1 type vxlan testpmd> flow create 0 ingress group 0 tunnel_set 1 pattern eth /ipv4 / udp dst is 4789 / vxlan / end actions jump group 0 / end Flow rule #0 created testpmd> port 0/queue 0: received 1 packets tunnel restore info: - vxlan tunnel - outer header present # <-- src=50:6B:4B:CC:FC:E2 - dst=24:8A:07:8D:AE:D6 - type=0x0800 - length=92 testpmd> flow create 0 ingress group 0 tunnel_match 1 pattern eth / ipv4 / udp dst is 4789 / vxlan / eth / ipv4 / end actions set_mac_dst mac_addr 02:CA:FE:CA:FA:80 / queue index 0 / end Flow rule #1 created testpmd> port 0/queue 0: received 1 packets src=50:BB:BB:BB:BB:E2 - dst=02:CA:FE:CA:FA:80 - type=0x0800 - length=42 * Destroy flow tunnel flow tunnel destroy <port> id <tunnel id> * Show existing flow tunnels flow tunnel list <port> Signed-off-by: Gregory Etelson <getelson@nvidia.com> |
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| README | ||
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DPDK is a set of libraries and drivers for fast packet processing. It supports many processor architectures and both FreeBSD and Linux. The DPDK uses the Open Source BSD-3-Clause license for the core libraries and drivers. The kernel components are GPL-2.0 licensed. Please check the doc directory for release notes, API documentation, and sample application information. For questions and usage discussions, subscribe to: users@dpdk.org Report bugs and issues to the development mailing list: dev@dpdk.org