[dpdk-dev] [PATCH v4 4/4] app/testpmd: add commands for tunnel offload API

Ori Kam orika at nvidia.com
Sun Oct 4 15:59:26 CEST 2020


Hi

> -----Original Message-----
> From: Gregory Etelson <getelson at nvidia.com>
> Sent: Sunday, October 4, 2020 4:51 PM
> Subject: [PATCH v4 4/4] app/testpmd: add commands for tunnel offload API
> 
> 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 at nvidia.com>
> ---
> v2:
> * introduce testpmd support for tunnel offload API
> 
> v3:
> * update flow tunnel commands
> ---


Acked-by: Ori Kam <orika at nvidia.com>
Thanks,
Ori


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