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| author | Laura Garcia Liebana <nevola@gmail.com> | 2017-02-23 12:11:08 +0100 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2017-03-06 17:59:14 +0100 |
| commit | 1ebd1e974e95ea90389064265523840968f50859 (patch) | |
| tree | 0e0874c800ff2c3961e709441e2c6632cfc6deb4 /tests | |
| parent | 059b9bf6fb31b971f79f83a01d9794288ab88a6e (diff) | |
expr: 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 'tests')
| -rw-r--r-- | tests/nft-expr_hash-test.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tests/nft-expr_hash-test.c b/tests/nft-expr_hash-test.c index d928234..7be6e9e 100644 --- a/tests/nft-expr_hash-test.c +++ b/tests/nft-expr_hash-test.c @@ -45,6 +45,9 @@ static void cmp_nftnl_expr(struct nftnl_expr *rule_a, if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_HASH_OFFSET) != nftnl_expr_get_u32(rule_b, NFTNL_EXPR_HASH_OFFSET)) print_err("Expr NFTNL_EXPR_HASH_OFFSET mismatches"); + if (nftnl_expr_get_u32(rule_a, NFTNL_EXPR_HASH_TYPE) != + nftnl_expr_get_u32(rule_b, NFTNL_EXPR_HASH_TYPE)) + print_err("Expr NFTNL_EXPR_HASH_TYPE mismatches"); } int main(int argc, char *argv[]) @@ -69,6 +72,7 @@ int main(int argc, char *argv[]) nftnl_expr_set_u32(ex, NFTNL_EXPR_HASH_MODULUS, 0x78123456); nftnl_expr_set_u32(ex, NFTNL_EXPR_HASH_SEED, 0x78123456); nftnl_expr_set_u32(ex, NFTNL_EXPR_HASH_OFFSET, 0x3612845); + nftnl_expr_set_u32(ex, NFTNL_EXPR_HASH_TYPE, NFT_HASH_JENKINS); nftnl_rule_add_expr(a, ex); |