>> This follows a convention in include/uapi/linux/netfilter/*.h that >> likely predates the introduction of uapi. A search for "Used >> internally by the kernel" shows many more examples. I should not have >> included filter.h, however. The common behavior when using pointers >> to kernel-internal structures is to have a forward declaration. I suggest >> making that change, instead of changing to void *. This avoids having >> to add casts where xt_bpf_info is used in net/netfilter/xt_bpf.c: > > that will not avoid typecast. > Either 'void *' approach or extra 'struct sk_filter;' approach, both need > type casts to 'struct bpf_prog' in xt_bpf.c > (because of SK_RUN_FILTER macro) > Therefore I prefer extra 'struct sk_filter;' approach.
I hadn't noticed that your patch makes the same change that I proposed. Nothing in userspace should touch that pointer, so it is fine to change its type to struct bpf_prog* at the same time. No need for typecasts. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
