On 11/30/22 9:55 PM, Eyal Birger wrote:
+
+ info->if_id = from->if_id;
+ info->link = from->link;
+ skb_dst_force(skb);
+ info->dst_orig = skb_dst(skb);
+
+ dst_hold((struct dst_entry *)md_dst);
+ skb_dst_set(skb, (struct dst_entry *)md_dst);
+ return 0;
+}
+
+__diag_pop()
+
+BTF_SET8_START(xfrm_ifc_kfunc_set)
+BTF_ID_FLAGS(func, bpf_skb_get_xfrm_info)
+BTF_ID_FLAGS(func, bpf_skb_set_xfrm_info)
+BTF_SET8_END(xfrm_ifc_kfunc_set)
+
+static const struct btf_kfunc_id_set xfrm_interface_kfunc_set = {
+ .owner = THIS_MODULE,
+ .set = &xfrm_ifc_kfunc_set,
+};
+
+int __init register_xfrm_interface_bpf(void)
+{
+ int err;
+
+ xfrm_md_dst = metadata_dst_alloc_percpu(0, METADATA_XFRM,
+ GFP_KERNEL);
May be DEFINE_PER_CPU() instead?
Are you suggesting duplicating the dst init/cleanup logic here?
Personally given that this happens once at module load, I think it's best to
use the existing infrastructure, but am willing to add this here if you think
it's better.
Agree, staying with the current patch is better. I somehow thought
metadata_dst_alloc_percpu() was newly added in this patch also.
