From: Johannes Berg <johan...@sipsolutions.net> Date: Fri, 7 Apr 2017 21:00:07 +0200
> From: Johannes Berg <johannes.b...@intel.com> > > There's no need to have struct bpf_prog_type_list since > it just contains a list_head, the type, and the ops > pointer. Since the types are densely packed and not > actually dynamically registered, it's much easier and > smaller to have an array of type->ops pointer. Also > initialize this array statically to remove code needed > to initialize it. > > Signed-off-by: Johannes Berg <johannes.b...@intel.com> If you just don't want to list things multiple times how about: linux/bpf_verifiers.h: BPF_VERIFIER(BPF_PROG_TYPE_SOCKET_FILTER, sk_filter_prog_ops) BPF_VERIFIER(BPF_PROG_TYPE_SCHED_CLS, tc_cls_prog_ops) ... Then in bpf.h: #define BPF_VERIFIER(TYPE_VAL, SYM) extern const struct bpf_verifier_ops SYM; #include <linux/bpf_verifiers.h" and in kernel/bpf/syscall.c: #define BPF_VERIFIER(TYPE_VAL, SYM) [TYPE_VAL] = &SYM, #include <linux/bpf_verifiers.h" or something like that. Maybe there is some even more straightforward way to do this without using sections or anything like that, which we can't see right now :)
