Hello,
While implementing a large scale L2 processing soft, there is a need for
high perf ingress handling.
In short: using BPF socket_filter prog with a hash func over ethernet
address to distribute load across multiple PF_PACKET sockets: mainly
filtering out non related hkey packets. It simplify userland app by
using multiple PF_PACKET sockets in dedicated pthread.
Longer discussion + quick source code illustration here:
https://github.com/acassen/bpf-pfpacket-rps
My question would be related to sockmap. I tried to figure out how to
perform the same policing design using sockmap. And cant find my way
around it :/ If bpf verdict prog can get socket fd from __sk_buff then
it could drives the same hash/policing decision.
Is it possible to get socket fd from __sk_buff from sockmap verdict prog ?
regs,
Alexandre
