On 08/13, Toshiaki Makita wrote: > * Implementation > > xdp_flow makes use of UMH to load an eBPF program for XDP, similar to > bpfilter. The difference is that xdp_flow does not generate the eBPF > program dynamically but a prebuilt program is embedded in UMH. This is > mainly because flow insertion is considerably frequent. If we generate > and load an eBPF program on each insertion of a flow, the latency of the > first packet of ping in above test will incease, which I want to avoid. Can this be instead implemented with a new hook that will be called for TC events? This hook can write to perf event buffer and control plane will insert/remove/modify flow tables in the BPF maps (contol plane will also install xdp program). Why do we need UMH? What am I missing?
