Hi all, I would like to discuss bpf qdisc in the BPF track. As we now try to support bpf qdisc using struct_ops, we found some limitations of bpf/struct_ops. While some have been discussed briefly on the mailing list, we can discuss in more detail to make struct_ops a more generic/palatable approach to replace kernel functions. In addition, I would like to discuss supporting adding kernel objects to bpf_list/rbtree, which may have performance benefits in some applications and can improve the programming experience. The current bpf fq in the RFC has a 6% throughput loss compared to the native counterpart due to memory allocation in enqueue() to store skb kptr. With a POC I wrote that allows adding skb to bpf_list, the throughput becomes comparable. We can discuss the approach and other potential use cases. Thanks, Amery
