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Commit b2832dd6 authored by Patrick McHardy's avatar Patrick McHardy Committed by Pablo Neira Ayuso
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netfilter: nf_tables: return set extensions from ->lookup() 



Return the extension area from the ->lookup() function to allow to
consolidate common actions.

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 61edafbb

include/net/netfilter/nf_tables.h

+3 −1
Original line number Diff line number Diff line
@@ -200,6 +200,8 @@ struct nft_set_estimate { 
	enum nft_set_class	class;

};



struct nft_set_ext;



/**

 *	struct nft_set_ops - nf_tables set operations

 *
@@ -218,7 +220,7 @@ struct nft_set_estimate { 
struct nft_set_ops {

	bool				(*lookup)(const struct nft_set *set,

						  const struct nft_data *key,

						  struct nft_data *data);

						  const struct nft_set_ext **ext);

	int				(*get)(const struct nft_set *set,

					       struct nft_set_elem *elem);

	int				(*insert)(const struct nft_set *set,

net/netfilter/nft_hash.c

+3 −3
Original line number Diff line number Diff line
@@ -66,7 +66,7 @@ static inline int nft_hash_cmp(struct rhashtable_compare_arg *arg, 


static bool nft_hash_lookup(const struct nft_set *set,

			    const struct nft_data *key,

			    struct nft_data *data)

			    const struct nft_set_ext **ext)

{

	struct nft_hash *priv = nft_set_priv(set);

	const struct nft_hash_elem *he;
@@ -76,8 +76,8 @@ static bool nft_hash_lookup(const struct nft_set *set, 
	};



	he = rhashtable_lookup_fast(&priv->ht, &arg, nft_hash_params);

	if (he && set->flags & NFT_SET_MAP)

		nft_data_copy(data, nft_set_ext_data(&he->ext));

	if (he != NULL)

		*ext = &he->ext;



	return !!he;

}

net/netfilter/nft_lookup.c

+5 −1
Original line number Diff line number Diff line
@@ -31,9 +31,13 @@ static void nft_lookup_eval(const struct nft_expr *expr, 
{

	const struct nft_lookup *priv = nft_expr_priv(expr);

	const struct nft_set *set = priv->set;

	const struct nft_set_ext *ext;



	if (set->ops->lookup(set, &data[priv->sreg], &data[priv->dreg]))

	if (set->ops->lookup(set, &data[priv->sreg], &ext)) {

		if (set->flags & NFT_SET_MAP)

			nft_data_copy(&data[priv->dreg], nft_set_ext_data(ext));

		return;

	}

	data[NFT_REG_VERDICT].verdict = NFT_BREAK;

}

net/netfilter/nft_rbtree.c

+3 −4
Original line number Diff line number Diff line
@@ -31,7 +31,7 @@ struct nft_rbtree_elem { 


static bool nft_rbtree_lookup(const struct nft_set *set,

			      const struct nft_data *key,

			      struct nft_data *data)

			      const struct nft_set_ext **ext)

{

	const struct nft_rbtree *priv = nft_set_priv(set);

	const struct nft_rbtree_elem *rbe, *interval = NULL;
@@ -55,10 +55,9 @@ static bool nft_rbtree_lookup(const struct nft_set *set, 
			    *nft_set_ext_flags(&rbe->ext) &

			    NFT_SET_ELEM_INTERVAL_END)

				goto out;

			if (set->flags & NFT_SET_MAP)

				nft_data_copy(data, nft_set_ext_data(&rbe->ext));



			spin_unlock_bh(&nft_rbtree_lock);



			*ext = &rbe->ext;

			return true;

		}

	}