On Tue, 29 Oct 2024 21:51:40 +0000 Ferruh Yigit <ferruh.yi...@amd.com> wrote:
> On 9/22/2024 7:50 AM, Gregory Etelson wrote: > > Hairpin offloads packet forwarding between ports. > > Packet is expected on Rx port <rp>, Rx queue <rq> and is forwarded > > to Tx port <tp> Tx queue <tq>. > > > > Testpmd implements a static hairpin configuration scheme. > > > > The new parameter allows explicit selection of Rx and Tx ports and > > queues in hairpin configuration. > > The new `hairpin-map` parameter is provided with 5 parameters, > > separated by `:` > > > > `--hairpin-map=Rx port id:Rx queue:Tx port id:Tx queue:queues number` > > > > Testpmd operator can provide several `hairpin-map` parameters for > > different hairpin maps. > > Example: > > > > dpdk-testpmd <EAL params> -- \ > > <testpmd params> \ > > --rxq=2 --txq=2 --hairpinq=2 --hairpin-mode=0x12 \ > > --hairpin-map=0:2:1:2:1 \ # [1] > > --hairpin-map=0:3:2:2:3 # [2] > > > > Hairpin map [1] binds Rx port 0, queue 2 with Tx port 1, queue 2. > > Hairpin map [2] binds > > Rx port 0, queue 3 with Tx port 2, queue 2, > > Rx port 0, queue 4 with Tx port 2, queue 3, > > Rx port 0, queue 5 with Tx port 2, queue 4. > > > > The new `hairpin-map` parameter is optional. > > If omitted, testpmd will create "default" hairpin maps. > > > > Signed-off-by: Gregory Etelson <getel...@nvidia.com> > > Acked-by: Dariusz Sosnowski <dsosnow...@nvidia.com> > > > > +Praveen > cpfl is only other driver that implements hairpin, @Praveen can you > please help reviewing this patch, and confirm change works fine with > your changes. > > @Stephen, if you have any free cycles, can you please help on this patch > too? > > Thanks, > ferruh Ok, can do semantic review but do not have any working HW with hairpin capability.
