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yaml
---
r: 41937
b: refs/heads/master
c: 39b46fc
h: refs/heads/master
i:
  41935: a7698ca
v: v3
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Patrick McHardy authored and David S. Miller committed Dec 3, 2006
1 parent 603b0fe commit 4038542
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Showing 9 changed files with 340 additions and 286 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: d7a5c32442ed3d528b9ddfd3d5b837bad0ffa9da
refs/heads/master: 39b46fc6f0d1161a5585cd8af7b3a05e8118ab7e
1 change: 1 addition & 0 deletions trunk/include/linux/netfilter/Kbuild
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Expand Up @@ -14,6 +14,7 @@ header-y += xt_dscp.h
header-y += xt_DSCP.h
header-y += xt_esp.h
header-y += xt_helper.h
header-y += xt_hashlimit.h
header-y += xt_length.h
header-y += xt_limit.h
header-y += xt_mac.h
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40 changes: 40 additions & 0 deletions trunk/include/linux/netfilter/xt_hashlimit.h
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@@ -0,0 +1,40 @@
#ifndef _XT_HASHLIMIT_H
#define _XT_HASHLIMIT_H

/* 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. */

/* details of this structure hidden by the implementation */
struct xt_hashlimit_htable;

#define XT_HASHLIMIT_HASH_DIP 0x0001
#define XT_HASHLIMIT_HASH_DPT 0x0002
#define XT_HASHLIMIT_HASH_SIP 0x0004
#define XT_HASHLIMIT_HASH_SPT 0x0008

struct hashlimit_cfg {
u_int32_t mode; /* bitmask of IPT_HASHLIMIT_HASH_* */
u_int32_t avg; /* Average secs between packets * scale */
u_int32_t burst; /* Period multiplier for upper limit. */

/* user specified */
u_int32_t size; /* how many buckets */
u_int32_t max; /* max number of entries */
u_int32_t gc_interval; /* gc interval */
u_int32_t expire; /* when do entries expire? */
};

struct xt_hashlimit_info {
char name [IFNAMSIZ]; /* name */
struct hashlimit_cfg cfg;
struct xt_hashlimit_htable *hinfo;

/* Used internally by the kernel */
union {
void *ptr;
struct xt_hashlimit_info *master;
} u;
};
#endif /*_XT_HASHLIMIT_H*/
42 changes: 8 additions & 34 deletions trunk/include/linux/netfilter_ipv4/ipt_hashlimit.h
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@@ -1,40 +1,14 @@
#ifndef _IPT_HASHLIMIT_H
#define _IPT_HASHLIMIT_H

/* timings are in milliseconds. */
#define IPT_HASHLIMIT_SCALE 10000
/* 1/10,000 sec period => max of 10,000/sec. Min rate is then 429490
seconds, or one every 59 hours. */
#include <linux/netfilter/xt_hashlimit.h>

/* details of this structure hidden by the implementation */
struct ipt_hashlimit_htable;
#define IPT_HASHLIMIT_SCALE XT_HASHLIMIT_SCALE
#define IPT_HASHLIMIT_HASH_DIP XT_HASHLIMIT_HASH_DIP
#define IPT_HASHLIMIT_HASH_DPT XT_HASHLIMIT_HASH_DPT
#define IPT_HASHLIMIT_HASH_SIP XT_HASHLIMIT_HASH_SIP
#define IPT_HASHLIMIT_HASH_SPT XT_HASHLIMIT_HASH_SPT

#define IPT_HASHLIMIT_HASH_DIP 0x0001
#define IPT_HASHLIMIT_HASH_DPT 0x0002
#define IPT_HASHLIMIT_HASH_SIP 0x0004
#define IPT_HASHLIMIT_HASH_SPT 0x0008
#define ipt_hashlimit_info xt_hashlimit_info

struct hashlimit_cfg {
u_int32_t mode; /* bitmask of IPT_HASHLIMIT_HASH_* */
u_int32_t avg; /* Average secs between packets * scale */
u_int32_t burst; /* Period multiplier for upper limit. */

/* user specified */
u_int32_t size; /* how many buckets */
u_int32_t max; /* max number of entries */
u_int32_t gc_interval; /* gc interval */
u_int32_t expire; /* when do entries expire? */
};

struct ipt_hashlimit_info {
char name [IFNAMSIZ]; /* name */
struct hashlimit_cfg cfg;
struct ipt_hashlimit_htable *hinfo;

/* Used internally by the kernel */
union {
void *ptr;
struct ipt_hashlimit_info *master;
} u;
};
#endif /*_IPT_HASHLIMIT_H*/
#endif /* _IPT_HASHLIMIT_H */
14 changes: 0 additions & 14 deletions trunk/net/ipv4/netfilter/Kconfig
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Expand Up @@ -326,20 +326,6 @@ config IP_NF_MATCH_ADDRTYPE
If you want to compile it as a module, say M here and read
<file:Documentation/modules.txt>. If unsure, say `N'.

config IP_NF_MATCH_HASHLIMIT
tristate 'hashlimit match support'
depends on IP_NF_IPTABLES
help
This option adds a new iptables `hashlimit' match.

As opposed to `limit', this match dynamically creates a hash table
of limit buckets, based on your selection of source/destination
ip addresses and/or ports.

It enables you to express policies like `10kpps for any given
destination IP' or `500pps from any given source IP' with a single
IPtables rule.

# `filter', generic and specific targets
config IP_NF_FILTER
tristate "Packet filtering"
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1 change: 0 additions & 1 deletion trunk/net/ipv4/netfilter/Makefile
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Expand Up @@ -53,7 +53,6 @@ obj-$(CONFIG_IP_NF_NAT) += iptable_nat.o
obj-$(CONFIG_IP_NF_RAW) += iptable_raw.o

# matches
obj-$(CONFIG_IP_NF_MATCH_HASHLIMIT) += ipt_hashlimit.o
obj-$(CONFIG_IP_NF_MATCH_IPRANGE) += ipt_iprange.o
obj-$(CONFIG_IP_NF_MATCH_OWNER) += ipt_owner.o
obj-$(CONFIG_IP_NF_MATCH_TOS) += ipt_tos.o
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14 changes: 14 additions & 0 deletions trunk/net/netfilter/Kconfig
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Expand Up @@ -464,5 +464,19 @@ config NETFILTER_XT_MATCH_TCPMSS

To compile it as a module, choose M here. If unsure, say N.

config NETFILTER_XT_MATCH_HASHLIMIT
tristate '"hashlimit" match support'
depends on NETFILTER_XTABLES
help
This option adds a `hashlimit' match.

As opposed to `limit', this match dynamically creates a hash table
of limit buckets, based on your selection of source/destination
addresses and/or ports.

It enables you to express policies like `10kpps for any given
destination address' or `500pps from any given source address'
with a single rule.

endmenu

1 change: 1 addition & 0 deletions trunk/net/netfilter/Makefile
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Expand Up @@ -59,3 +59,4 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_STATISTIC) += xt_statistic.o
obj-$(CONFIG_NETFILTER_XT_MATCH_STRING) += xt_string.o
obj-$(CONFIG_NETFILTER_XT_MATCH_TCPMSS) += xt_tcpmss.o
obj-$(CONFIG_NETFILTER_XT_MATCH_PHYSDEV) += xt_physdev.o
obj-$(CONFIG_NETFILTER_XT_MATCH_HASHLIMIT) += xt_hashlimit.o
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