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Commit 37df5301 authored by Pablo Neira Ayuso's avatar Pablo Neira Ayuso
Browse files

netfilter: nft_set: introduce nft_{hash, rbtree}_deactivate_one() 



This new function allows us to deactivate one single element, this is
required by the set flush command that comes in a follow up patch.

Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 1a37ef76

net/netfilter/nft_set_hash.c

+17 −7
Original line number Diff line number Diff line
@@ -167,6 +167,19 @@ static void nft_hash_activate(const struct net *net, const struct nft_set *set, 
	nft_set_elem_clear_busy(&he->ext);

}



static bool nft_hash_deactivate_one(const struct net *net,

				    const struct nft_set *set, void *priv)

{

	struct nft_hash_elem *he = priv;



	if (!nft_set_elem_mark_busy(&he->ext) ||

	    !nft_is_active(net, &he->ext)) {

		nft_set_elem_change_active(net, set, &he->ext);

		return true;

	}

	return false;

}



static void *nft_hash_deactivate(const struct net *net,

				 const struct nft_set *set,

				 const struct nft_set_elem *elem)
@@ -181,13 +194,10 @@ static void *nft_hash_deactivate(const struct net *net, 


	rcu_read_lock();

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

	if (he != NULL) {

		if (!nft_set_elem_mark_busy(&he->ext) ||

		    !nft_is_active(net, &he->ext))

			nft_set_elem_change_active(net, set, &he->ext);

		else

	if (he != NULL &&

	    !nft_hash_deactivate_one(net, set, he))

		he = NULL;

	}



	rcu_read_unlock();



	return he;

net/netfilter/nft_set_rbtree.c

+10 −1
Original line number Diff line number Diff line
@@ -171,6 +171,15 @@ static void nft_rbtree_activate(const struct net *net, 
	nft_set_elem_change_active(net, set, &rbe->ext);

}



static bool nft_rbtree_deactivate_one(const struct net *net,

				      const struct nft_set *set, void *priv)

{

	struct nft_rbtree_elem *rbe = priv;



	nft_set_elem_change_active(net, set, &rbe->ext);

	return true;

}



static void *nft_rbtree_deactivate(const struct net *net,

				   const struct nft_set *set,

				   const struct nft_set_elem *elem)
@@ -204,7 +213,7 @@ static void *nft_rbtree_deactivate(const struct net *net, 
				parent = parent->rb_right;

				continue;

			}

			nft_set_elem_change_active(net, set, &rbe->ext);

			nft_rbtree_deactivate_one(net, set, rbe);

			return rbe;

		}

	}