netfilter: nf_tables: use correct integer types

Sparse tool complains about mixing of different endianess
types, so use the correct ones.

Add type casts where needed.

objdiff shows no changes except in nft_tunnel (type is changed).
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

net/netfilter/nft_cmp.c

@@ -125,13 +125,13 @@ static void nft_payload_n2h(union nft_cmp_offload_data *data,
 {
 	switch (len) {
 	case 2:
-		data->val16 = ntohs(*((u16 *)val));
+		data->val16 = ntohs(*((__be16 *)val));
 		break;
 	case 4:
-		data->val32 = ntohl(*((u32 *)val));
+		data->val32 = ntohl(*((__be32 *)val));
 		break;
 	case 8:
-		data->val64 = be64_to_cpu(*((u64 *)val));
+		data->val64 = be64_to_cpu(*((__be64 *)val));
 		break;
 	default:
 		WARN_ON_ONCE(1);

net/netfilter/nft_ct.c

@@ -204,12 +204,12 @@ static void nft_ct_get_eval(const struct nft_expr *expr,
 	case NFT_CT_SRC_IP:
 		if (nf_ct_l3num(ct) != NFPROTO_IPV4)
 			goto err;
-		*dest = tuple->src.u3.ip;
+		*dest = (__force __u32)tuple->src.u3.ip;
 		return;
 	case NFT_CT_DST_IP:
 		if (nf_ct_l3num(ct) != NFPROTO_IPV4)
 			goto err;
-		*dest = tuple->dst.u3.ip;
+		*dest = (__force __u32)tuple->dst.u3.ip;
 		return;
 	case NFT_CT_SRC_IP6:
 		if (nf_ct_l3num(ct) != NFPROTO_IPV6)

net/netfilter/nft_exthdr.c

@@ -266,7 +266,7 @@ static void nft_exthdr_tcp_set_eval(const struct nft_expr *expr,
 
 		switch (priv->len) {
 		case 2:
-			old.v16 = get_unaligned((u16 *)(opt + offset));
+			old.v16 = (__force __be16)get_unaligned((u16 *)(opt + offset));
 			new.v16 = (__force __be16)nft_reg_load16(
 				&regs->data[priv->sreg]);
 
@@ -281,18 +281,18 @@ static void nft_exthdr_tcp_set_eval(const struct nft_expr *expr,
 			if (old.v16 == new.v16)
 				return;
 
-			put_unaligned(new.v16, (u16*)(opt + offset));
+			put_unaligned(new.v16, (__be16*)(opt + offset));
 			inet_proto_csum_replace2(&tcph->check, pkt->skb,
 						 old.v16, new.v16, false);
 			break;
 		case 4:
-			new.v32 = regs->data[priv->sreg];
-			old.v32 = get_unaligned((u32 *)(opt + offset));
+			new.v32 = nft_reg_load_be32(&regs->data[priv->sreg]);
+			old.v32 = (__force __be32)get_unaligned((u32 *)(opt + offset));
 
 			if (old.v32 == new.v32)
 				return;
 
-			put_unaligned(new.v32, (u32*)(opt + offset));
+			put_unaligned(new.v32, (__be32*)(opt + offset));
 			inet_proto_csum_replace4(&tcph->check, pkt->skb,
 						 old.v32, new.v32, false);
 			break;

net/netfilter/nft_tunnel.c

@@ -383,8 +383,9 @@ static int nft_tunnel_obj_opts_init(const struct nft_ctx *ctx,
 				    struct ip_tunnel_info *info,
 				    struct nft_tunnel_opts *opts)
 {
-	int err, rem, type = 0;
 	struct nlattr *nla;
+	__be16 type = 0;
+	int err, rem;
 
 	err = nla_validate_nested_deprecated(attr, NFTA_TUNNEL_KEY_OPTS_MAX,
 					     nft_tunnel_opts_policy, NULL);