diff options
| author |   Florian Westphal <fw@strlen.de> | 2025-05-22 15:49:34 +0200 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2025-05-23 13:57:12 +0200 |
| commit | 7e5c6aa67e6f6133c5a2c53852e1dd9af2c0c3fc (patch) | |
| tree | 413e201ebe3b7983d3bc650ad641624a1f4563f5 /include | |
| parent | netfilter: conntrack: make nf_conntrack_id callable without a module dependency (diff) | |
| download | wireguard-linux-7e5c6aa67e6f6133c5a2c53852e1dd9af2c0c3fc.tar.xz wireguard-linux-7e5c6aa67e6f6133c5a2c53852e1dd9af2c0c3fc.zip | |
netfilter: nf_tables: add packets conntrack state to debug trace info
Add the minimal relevant info needed for userspace ("nftables monitor
trace") to provide the conntrack view of the packet:
- state (new, related, established)
- direction (original, reply)
- status (e.g., if connection is subject to dnat)
- id (allows to query ctnetlink for remaining conntrack state info)
Example:
trace id a62 inet filter PRE_RAW packet: iif "enp0s3" ether [..]
[..]
trace id a62 inet filter PRE_MANGLE conntrack: ct direction original ct state new ct id 32
trace id a62 inet filter PRE_MANGLE packet: [..]
[..]
trace id a62 inet filter IN conntrack: ct direction original ct state new ct status dnat-done ct id 32
[..]
In this case one can see that while NAT is active, the new connection
isn't subject to a translation.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/netfilter/nf_tables.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index 7d6bc19a0153..2beb30be2c5f 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -1841,6 +1841,10 @@ enum nft_xfrm_keys { * @NFTA_TRACE_MARK: nfmark (NLA_U32) * @NFTA_TRACE_NFPROTO: nf protocol processed (NLA_U32) * @NFTA_TRACE_POLICY: policy that decided fate of packet (NLA_U32) + * @NFTA_TRACE_CT_ID: conntrack id (NLA_U32) + * @NFTA_TRACE_CT_DIRECTION: packets direction (NLA_U8) + * @NFTA_TRACE_CT_STATUS: conntrack status (NLA_U32) + * @NFTA_TRACE_CT_STATE: packet state (new, established, ...) (NLA_U32) */ enum nft_trace_attributes { NFTA_TRACE_UNSPEC, @@ -1861,6 +1865,10 @@ enum nft_trace_attributes { NFTA_TRACE_NFPROTO, NFTA_TRACE_POLICY, NFTA_TRACE_PAD, + NFTA_TRACE_CT_ID, + NFTA_TRACE_CT_DIRECTION, + NFTA_TRACE_CT_STATUS, + NFTA_TRACE_CT_STATE, __NFTA_TRACE_MAX }; #define NFTA_TRACE_MAX (__NFTA_TRACE_MAX - 1) |