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netfilter: nft_rbtree: introduce nft_rbtree_interval_end() helper

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Add this new nft_rbtree_interval_end() helper function to check in the
end interval is set.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2016-04-12 23:50:36 +02:00
parent 3971ca1435
commit ef1d20e0f8
1 changed files with 6 additions and 3 deletions
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9
net/netfilter/nft_rbtree.c
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@ -29,6 +29,11 @@ struct nft_rbtree_elem {
struct nft_set_ext ext;
};
static bool nft_rbtree_interval_end(const struct nft_rbtree_elem *rbe)
{
return nft_set_ext_exists(&rbe->ext, NFT_SET_EXT_FLAGS) &&
(*nft_set_ext_flags(&rbe->ext) & NFT_SET_ELEM_INTERVAL_END);
}
static bool nft_rbtree_lookup(const struct nft_set *set, const u32 *key,
const struct nft_set_ext **ext)
@ -56,9 +61,7 @@ found:
parent = parent->rb_left;
continue;
}
if (nft_set_ext_exists(&rbe->ext, NFT_SET_EXT_FLAGS) &&
*nft_set_ext_flags(&rbe->ext) &
NFT_SET_ELEM_INTERVAL_END)
if (nft_rbtree_interval_end(rbe))
goto out;
spin_unlock_bh(&nft_rbtree_lock);