netfilter: nf_tables: A better name for nft_obj_filter

Name it for what it is supposed to become, a real nft_obj_dump_ctx. No
functional change intended.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

net/netfilter/nf_tables_api.c

@@ -7681,7 +7681,7 @@ static void audit_log_obj_reset(const struct nft_table *table,
 	kfree(buf);
 }
 
-struct nft_obj_filter {
+struct nft_obj_dump_ctx {
 	char		*table;
 	u32		type;
 };
@@ -7691,7 +7691,7 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb)
 	const struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh);
 	const struct nft_table *table;
 	unsigned int idx = 0, s_idx = cb->args[0];
-	struct nft_obj_filter *filter = cb->data;
+	struct nft_obj_dump_ctx *ctx = cb->data;
 	struct net *net = sock_net(skb->sk);
 	int family = nfmsg->nfgen_family;
 	struct nftables_pernet *nft_net;
@@ -7717,10 +7717,10 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb)
 				goto cont;
 			if (idx < s_idx)
 				goto cont;
-			if (filter->table && strcmp(filter->table, table->name))
+			if (ctx->table && strcmp(ctx->table, table->name))
 				goto cont;
-			if (filter->type != NFT_OBJECT_UNSPEC &&
-			    obj->ops->type->type != filter->type)
+			if (ctx->type != NFT_OBJECT_UNSPEC &&
+			    obj->ops->type->type != ctx->type)
 				goto cont;
 
 			rc = nf_tables_fill_obj_info(skb, net,
@@ -7752,33 +7752,33 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb)
 static int nf_tables_dump_obj_start(struct netlink_callback *cb)
 {
 	const struct nlattr * const *nla = cb->data;
-	struct nft_obj_filter *filter = NULL;
+	struct nft_obj_dump_ctx *ctx = NULL;
 
-	filter = kzalloc(sizeof(*filter), GFP_ATOMIC);
-	if (!filter)
+	ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC);
+	if (!ctx)
 		return -ENOMEM;
 
 	if (nla[NFTA_OBJ_TABLE]) {
-		filter->table = nla_strdup(nla[NFTA_OBJ_TABLE], GFP_ATOMIC);
-		if (!filter->table) {
-			kfree(filter);
+		ctx->table = nla_strdup(nla[NFTA_OBJ_TABLE], GFP_ATOMIC);
+		if (!ctx->table) {
+			kfree(ctx);
 			return -ENOMEM;
 		}
 	}
 
 	if (nla[NFTA_OBJ_TYPE])
-		filter->type = ntohl(nla_get_be32(nla[NFTA_OBJ_TYPE]));
+		ctx->type = ntohl(nla_get_be32(nla[NFTA_OBJ_TYPE]));
 
-	cb->data = filter;
+	cb->data = ctx;
 	return 0;
 }
 
 static int nf_tables_dump_obj_done(struct netlink_callback *cb)
 {
-	struct nft_obj_filter *filter = cb->data;
+	struct nft_obj_dump_ctx *ctx = cb->data;
 
-	kfree(filter->table);
-	kfree(filter);
+	kfree(ctx->table);
+	kfree(ctx);
 
 	return 0;
 }