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
@@ -467,7 +467,7 @@ 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;
 
@@ -480,22 +480,20 @@ __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);
 	}
@@ -1371,8 +1369,8 @@ 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);
 	}