Hi Toke Your information is very useful for me. Thanks for your reply. Marco Il giorno sab 16 apr 2022 alle ore 19:02 Toke Høiland-Jørgensen <toke@xxxxxxxxxx> ha scritto: > > Marco <ctxspi@xxxxxxxxx> writes: > > > Hi > > > > Can XDP_REDIRECT forward packets to egress interface with speed > > different than ingress interface? > > > > More precisely, if ingress interface speed is 100 Gbps and the egress > > interface speed is 10 Gbps, the xdp program can be load on two > > interfaces and forward traffic (using XDP_REDIRECT) between them? > > Well, yes, it can forward packets just fine; but it'll just forward each > packet as it comes in, there's no mechanism for queueing or otherwise > rate limiting them. 10->100G is fine, of course, but in the other > direction, if you are receiving at 100Gbps line rate, you'll end up > forwarding 10 Gbps of it out the 10G interface and dropping the rest, > semi-randomly as the TX buffers overflow. > > We're working on adding a queueing mechanism to XDP to help with this, > but it'll probably be a little while yet before it surfaces... > > -Toke > -- E' meglio coltivare GNU/Linux... tanto Windows si pianta da solo!!
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