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authorPablo Neira Ayuso <pablo@netfilter.org>2017-01-18 18:30:12 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2017-02-08 14:16:21 +0100
commit0b5a78749260560f41e3b7c1f60f2c7dd9aff4f0 (patch)
treeb530e526e7535250bf4a03fec866341de33be9a2 /include/net
parent55af753cd9fda9c5300f5318253b08bd15fb412e (diff)
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netfilter: nf_tables: add space notation to sets
The space notation allows us to classify the set backend implementation based on the amount of required memory. This provides an order of the set representation scalability in terms of memory. The size field is still left in place so use this if the userspace provides no explicit number of elements, so we cannot calculate the real memory that this set needs. This also helps us break ties in the set backend selection routine, eg. two backend implementations provide the same performance. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/netfilter/nf_tables.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index d76ac2f..21ce50e 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -245,10 +245,12 @@ enum nft_set_class {
*
* @size: required memory
* @lookup: lookup performance class
+ * @space: memory class
*/
struct nft_set_estimate {
unsigned int size;
enum nft_set_class lookup;
+ enum nft_set_class space;
};
struct nft_set_ext;
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