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netfilter: nft: add queue module

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This patch adds a new nft module named "nft_queue" which provides
a new nftables expression that allows you to enqueue packets to
userspace via the nfnetlink_queue subsystem. It provides the same
level of functionality as NFQUEUE and it shares some code with it.

Signed-off-by: Eric Leblond <eric@regit.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Eric Leblond 2013-12-06 00:24:13 +01:00 • committed by Pablo Neira Ayuso
commit 0aff078d58
4 changed files with 164 additions and 0 deletions
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20
include/uapi/linux/netfilter/nf_tables.h
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@ -657,6 +657,26 @@ enum nft_log_attributes {
};
#define NFTA_LOG_MAX (__NFTA_LOG_MAX - 1)
/**
* enum nft_queue_attributes - nf_tables queue expression netlink attributes
*
* @NFTA_QUEUE_NUM: netlink queue to send messages to (NLA_U16)
* @NFTA_QUEUE_TOTAL: number of queues to load balance packets on (NLA_U16)
* @NFTA_QUEUE_FLAGS: various flags (NLA_U16)
*/
enum nft_queue_attributes {
NFTA_QUEUE_UNSPEC,
NFTA_QUEUE_NUM,
NFTA_QUEUE_TOTAL,
NFTA_QUEUE_FLAGS,
__NFTA_QUEUE_MAX
};
#define NFTA_QUEUE_MAX (__NFTA_QUEUE_MAX - 1)
#define NFT_QUEUE_FLAG_BYPASS 0x01 /* for compatibility with v2 */
#define NFT_QUEUE_FLAG_CPU_FANOUT 0x02 /* use current CPU (no hashing) */
#define NFT_QUEUE_FLAG_MASK 0x03
/**
* enum nft_reject_types - nf_tables reject expression reject types
*