return 0;
 }
 
-const struct bpf_func_proto bpf_skb_store_bytes_proto = {
+static const struct bpf_func_proto bpf_skb_store_bytes_proto = {
        .func           = bpf_skb_store_bytes,
        .gpl_only       = false,
        .ret_type       = RET_INTEGER,
        return 0;
 }
 
-const struct bpf_func_proto bpf_skb_load_bytes_proto = {
+static const struct bpf_func_proto bpf_skb_load_bytes_proto = {
        .func           = bpf_skb_load_bytes,
        .gpl_only       = false,
        .ret_type       = RET_INTEGER,
        return 0;
 }
 
-const struct bpf_func_proto bpf_l3_csum_replace_proto = {
+static const struct bpf_func_proto bpf_l3_csum_replace_proto = {
        .func           = bpf_l3_csum_replace,
        .gpl_only       = false,
        .ret_type       = RET_INTEGER,
        return 0;
 }
 
-const struct bpf_func_proto bpf_l4_csum_replace_proto = {
+static const struct bpf_func_proto bpf_l4_csum_replace_proto = {
        .func           = bpf_l4_csum_replace,
        .gpl_only       = false,
        .ret_type       = RET_INTEGER,
        return csum_partial(sp->diff, diff_size, seed);
 }
 
-const struct bpf_func_proto bpf_csum_diff_proto = {
+static const struct bpf_func_proto bpf_csum_diff_proto = {
        .func           = bpf_csum_diff,
        .gpl_only       = false,
        .ret_type       = RET_INTEGER,
        return dev_queue_xmit(skb2);
 }
 
-const struct bpf_func_proto bpf_clone_redirect_proto = {
+static const struct bpf_func_proto bpf_clone_redirect_proto = {
        .func           = bpf_clone_redirect,
        .gpl_only       = false,
        .ret_type       = RET_INTEGER,
        return dev_queue_xmit(skb);
 }
 
-const struct bpf_func_proto bpf_redirect_proto = {
+static const struct bpf_func_proto bpf_redirect_proto = {
        .func           = bpf_redirect,
        .gpl_only       = false,
        .ret_type       = RET_INTEGER,
        return 0;
 }
 
-const struct bpf_func_proto bpf_skb_get_tunnel_key_proto = {
+static const struct bpf_func_proto bpf_skb_get_tunnel_key_proto = {
        .func           = bpf_skb_get_tunnel_key,
        .gpl_only       = false,
        .ret_type       = RET_INTEGER,
        return 0;
 }
 
-const struct bpf_func_proto bpf_skb_set_tunnel_key_proto = {
+static const struct bpf_func_proto bpf_skb_set_tunnel_key_proto = {
        .func           = bpf_skb_set_tunnel_key,
        .gpl_only       = false,
        .ret_type       = RET_INTEGER,