@@ -365,22 +365,13 @@ static void nft_hash_destroy(const struct nft_set *set)
static bool nft_hash_estimate(const struct nft_set_desc *desc, u32 features,
struct nft_set_estimate *est)
{
- unsigned int esize;
-
- esize = sizeof(struct nft_hash_elem);
- if (desc->size) {
+ if (desc->size)
est->size = sizeof(struct nft_hash) +
roundup_pow_of_two(desc->size * 4 / 3) *
sizeof(struct nft_hash_elem *) +
- desc->size * esize;
- } else {
- /* Resizing happens when the load drops below 30% or goes
- * above 75%. The average of 52.5% load (approximated by 50%)
- * is used for the size estimation of the hash buckets,
- * meaning we calculate two buckets per element.
- */
- est->size = esize + 2 * sizeof(struct nft_hash_elem *);
- }
+ desc->size * sizeof(struct nft_hash_elem);
+ else
+ est->size = ~0;
est->lookup = NFT_SET_CLASS_O_1;
est->space = NFT_SET_CLASS_O_N;
@@ -283,13 +283,11 @@ static void nft_rbtree_destroy(const struct nft_set *set)
static bool nft_rbtree_estimate(const struct nft_set_desc *desc, u32 features,
struct nft_set_estimate *est)
{
- unsigned int nsize;
-
- nsize = sizeof(struct nft_rbtree_elem);
if (desc->size)
- est->size = sizeof(struct nft_rbtree) + desc->size * nsize;
+ est->size = sizeof(struct nft_rbtree) +
+ desc->size * sizeof(struct nft_rbtree_elem);
else
- est->size = nsize;
+ est->size = ~0;
est->lookup = NFT_SET_CLASS_O_LOG_N;
est->space = NFT_SET_CLASS_O_N;
This size estimation is ignored by the existing set backend selection logic, since this estimation structure is stack allocated, set this to ~0 to make it easier to catch bugs in future changes. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> --- net/netfilter/nft_set_hash.c | 17 ++++------------- net/netfilter/nft_set_rbtree.c | 8 +++----- 2 files changed, 7 insertions(+), 18 deletions(-)