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netfilter: nf_tables: add forward expression to the netdev family

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You can use this to forward packets from ingress to the egress path of
the specified interface. This provides a fast path to bounce packets
from one interface to another specific destination interface.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2015-11-25 13:39:38 +01:00
commit 39e6dea28a
4 changed files with 117 additions and 0 deletions
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12
include/uapi/linux/netfilter/nf_tables.h
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@ -983,6 +983,18 @@ enum nft_dup_attributes {
};
#define NFTA_DUP_MAX (__NFTA_DUP_MAX - 1)
/**
* enum nft_fwd_attributes - nf_tables fwd expression netlink attributes
*
* @NFTA_FWD_SREG_DEV: source register of output interface (NLA_U32: nft_register)
*/
enum nft_fwd_attributes {
NFTA_FWD_UNSPEC,
NFTA_FWD_SREG_DEV,
__NFTA_FWD_MAX
};
#define NFTA_FWD_MAX (__NFTA_FWD_MAX - 1)
/**
* enum nft_gen_attributes - nf_tables ruleset generation attributes
*