Alexei Starovoitov
2023-Oct-15 16:07 UTC
[RFC PATCH v2 1/7] bpf: Introduce BPF_PROG_TYPE_VNET_HASH
On Sun, Oct 15, 2023 at 7:17?AM Akihiko Odaki <akihiko.odaki at daynix.com> wrote:> > diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h > index 0448700890f7..298634556fab 100644 > --- a/include/uapi/linux/bpf.h > +++ b/include/uapi/linux/bpf.h > @@ -988,6 +988,7 @@ enum bpf_prog_type { > BPF_PROG_TYPE_SK_LOOKUP, > BPF_PROG_TYPE_SYSCALL, /* a program that can execute syscalls */ > BPF_PROG_TYPE_NETFILTER, > + BPF_PROG_TYPE_VNET_HASH,Sorry, we do not add new stable program types anymore.> @@ -6111,6 +6112,10 @@ struct __sk_buff { > __u8 tstamp_type; > __u32 :24; /* Padding, future use. */ > __u64 hwtstamp; > + > + __u32 vnet_hash_value; > + __u16 vnet_hash_report; > + __u16 vnet_rss_queue; > };we also do not add anything to uapi __sk_buff.> +const struct bpf_verifier_ops vnet_hash_verifier_ops = { > + .get_func_proto = sk_filter_func_proto, > + .is_valid_access = sk_filter_is_valid_access, > + .convert_ctx_access = bpf_convert_ctx_access, > + .gen_ld_abs = bpf_gen_ld_abs, > +};and we don't do ctx rewrites like this either. Please see how hid-bpf and cgroup rstat are hooking up bpf in _unstable_ way.