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From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Tue, 19 Dec 2017 13:40:22 +0100
Subject: [PATCH] netfilter: nf_tables: remove struct nft_af_info parameter in
 nf_tables_chain_type_lookup()

Pass family number instead, this comes in preparation for the removal of
struct nft_af_info.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -452,7 +452,7 @@ static inline u64 nf_tables_alloc_handle
 static const struct nf_chain_type *chain_type[NFPROTO_NUMPROTO][NFT_CHAIN_T_MAX];
 
 static const struct nf_chain_type *
-__nf_tables_chain_type_lookup(int family, const struct nlattr *nla)
+__nf_tables_chain_type_lookup(const struct nlattr *nla, u8 family)
 {
        int i;
 
@@ -465,22 +465,20 @@ __nf_tables_chain_type_lookup(int family
 }
 
 static const struct nf_chain_type *
-nf_tables_chain_type_lookup(const struct nft_af_info *afi,
-                           const struct nlattr *nla,
-                           bool autoload)
+nf_tables_chain_type_lookup(const struct nlattr *nla, u8 family, bool autoload)
 {
        const struct nf_chain_type *type;
 
-       type = __nf_tables_chain_type_lookup(afi->family, nla);
+       type = __nf_tables_chain_type_lookup(nla, family);
        if (type != NULL)
                return type;
 #ifdef CONFIG_MODULES
        if (autoload) {
                nfnl_unlock(NFNL_SUBSYS_NFTABLES);
-               request_module("nft-chain-%u-%.*s", afi->family,
+               request_module("nft-chain-%u-%.*s", family,
                               nla_len(nla), (const char *)nla_data(nla));
                nfnl_lock(NFNL_SUBSYS_NFTABLES);
-               type = __nf_tables_chain_type_lookup(afi->family, nla);
+               type = __nf_tables_chain_type_lookup(nla, family);
                if (type != NULL)
                        return ERR_PTR(-EAGAIN);
        }
@@ -1356,8 +1354,8 @@ static int nft_chain_parse_hook(struct n
 
        type = chain_type[afi->family][NFT_CHAIN_T_DEFAULT];
        if (nla[NFTA_CHAIN_TYPE]) {
-               type = nf_tables_chain_type_lookup(afi, nla[NFTA_CHAIN_TYPE],
-                                                  create);
+               type = nf_tables_chain_type_lookup(nla[NFTA_CHAIN_TYPE],
+                                                  afi->family, create);
                if (IS_ERR(type))
                        return PTR_ERR(type);
        }