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netfilter: nf_tables: add NFT_CHAIN_BINDING

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This new chain flag specifies that:

* the kernel dynamically allocates the chain name, if no chain name
  is specified.

* If the immediate expression that refers to this chain is removed,
  then this bound chain (and its content) is destroyed.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2020-06-30 19:21:36 +02:00
parent 04b7db4144
commit d0e2c7de92
4 changed files with 138 additions and 13 deletions
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include/uapi/linux/netfilter/nf_tables.h
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@ -187,6 +187,7 @@ enum nft_table_attributes {
enum nft_chain_flags {
NFT_CHAIN_BASE = (1 << 0),
NFT_CHAIN_HW_OFFLOAD = (1 << 1),
NFT_CHAIN_BINDING = (1 << 2),
};
/**