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netfilter: nf_tables: add NFTA_CHAIN_ID attribute

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This netlink attribute allows you to refer to chains inside a
transaction as an alternative to the name and the handle. The chain
binding support requires this new chain ID approach.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso
2020-06-30 19:21:11 +02:00
parent f0a5e4d7a5
commit 74cccc3d38
3 changed files with 17 additions and 3 deletions
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3
include/net/netfilter/nf_tables.h
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@@ -1433,6 +1433,7 @@ struct nft_trans_chain {
char *name;
struct nft_stats __percpu *stats;
u8 policy;
u32 chain_id;
};
#define nft_trans_chain_update(trans) \
@@ -1443,6 +1444,8 @@ struct nft_trans_chain {
(((struct nft_trans_chain *)trans->data)->stats)
#define nft_trans_chain_policy(trans) \
(((struct nft_trans_chain *)trans->data)->policy)
#define nft_trans_chain_id(trans) \
(((struct nft_trans_chain *)trans->data)->chain_id)
struct nft_trans_table {
bool update;