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Replace the copyright notice in header comments by an equivalent
SPDX-License-Identifier string. Drop a following empty line if at the
bottom of the comment. Leave any other header comment content in place.
This also fixes for an incomplete notice in examples/nft-ruleset-get.c
since commit c335442eefcca ("src: incorrect header refers to GPLv2
only").
Signed-off-by: Phil Sutter <phil@nwl.cc>
Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Use nftnl_nlmsg_build_hdr() instead of nftnl_*_nlmsg_build_hdr().
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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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>
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Add support to pass through an offset to the hash value. With this
feature, the sysadmin is able to generate a hash with a given
started value.
Example:
meta mark set jhash ip saddr mod 2 seed 0xabcd offset 100
This option generates marks according to the source address from 100 to
101.
Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Support for the nft hash expression in libnftnl.
Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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