diff options
author | Laura Garcia Liebana <nevola@gmail.com> | 2017-02-28 18:42:50 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2017-03-06 18:25:05 +0100 |
commit | 3a86406729782ee2671ec7161c76529c2e4a44e4 (patch) | |
tree | 931f8f89b8ab46e248830aaf4d99570d32beb6a6 /include/hash.h | |
parent | 24091fb6d084890ce167364ac78fed8ceb94ae85 (diff) |
src: hash: support of symmetric hash
This patch provides symmetric hash support according to source
ip address and port, and destination ip address and port.
The new attribute NFTA_HASH_TYPE has been included to support
different types of hashing functions. Currently supported
NFT_HASH_JENKINS through jhash and NFT_HASH_SYM through symhash.
The main difference between both types are:
- jhash requires an expression with sreg, symhash doesn't.
- symhash supports modulus and offset, but not seed.
Examples:
nft add rule ip nat prerouting ct mark set jhash ip saddr mod 2
nft add rule ip nat prerouting ct mark set symhash mod 2
Signed-off-by: Laura Garcia Liebana <laura.garcia@zevenet.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/hash.h')
-rw-r--r-- | include/hash.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/hash.h b/include/hash.h index 8bf53e2e..7f9c6f13 100644 --- a/include/hash.h +++ b/include/hash.h @@ -3,6 +3,6 @@ extern struct expr *hash_expr_alloc(const struct location *loc, uint32_t modulus, uint32_t seed, - uint32_t offset); + uint32_t offset, enum nft_hash_types type); #endif /* NFTABLES_HASH_H */ |