diff options
| author | Florian Westphal <fw@strlen.de> | 2012-05-07 10:51:45 +0000 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-05-09 13:04:57 +0200 |
| commit | 0197dee7d3182bb6b6a21955860dfa14fa022d84 (patch) | |
| tree | 121237ff7991a5fea8d8ac6202ad6c92834e744e /include/linux | |
| parent | 817e076f61bca3d0270af60632d1fe07cd4919f1 (diff) | |
| download | lwn-0197dee7d3182bb6b6a21955860dfa14fa022d84.tar.gz lwn-0197dee7d3182bb6b6a21955860dfa14fa022d84.zip | |
netfilter: hashlimit: byte-based limit mode
can be used e.g. for ingress traffic policing or
to detect when a host/port consumes more bandwidth than expected.
This is done by optionally making cost to mean
"cost per 16-byte-chunk-of-data" instead of "cost per packet".
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/netfilter/xt_hashlimit.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/netfilter/xt_hashlimit.h b/include/linux/netfilter/xt_hashlimit.h index b1925b5925e9..05fe7993dd76 100644 --- a/include/linux/netfilter/xt_hashlimit.h +++ b/include/linux/netfilter/xt_hashlimit.h @@ -6,7 +6,11 @@ /* timings are in milliseconds. */ #define XT_HASHLIMIT_SCALE 10000 /* 1/10,000 sec period => max of 10,000/sec. Min rate is then 429490 - seconds, or one every 59 hours. */ + * seconds, or one packet every 59 hours. + */ + +/* packet length accounting is done in 16-byte steps */ +#define XT_HASHLIMIT_BYTE_SHIFT 4 /* details of this structure hidden by the implementation */ struct xt_hashlimit_htable; @@ -17,6 +21,10 @@ enum { XT_HASHLIMIT_HASH_SIP = 1 << 2, XT_HASHLIMIT_HASH_SPT = 1 << 3, XT_HASHLIMIT_INVERT = 1 << 4, + XT_HASHLIMIT_BYTES = 1 << 5, +#ifdef __KERNEL__ + XT_HASHLIMIT_MAX = 1 << 6, +#endif }; struct hashlimit_cfg { |