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authorJo-Philipp Wich <jow@openwrt.org>2011-03-10 13:51:37 +0000
committerJo-Philipp Wich <jow@openwrt.org>2011-03-10 13:51:37 +0000
commitcefba2ca2fc2eac0289b93faa38de5e03b5022ee (patch)
treeb020d5312825d82021ec4d1190fbdba02615f768 /package/iptables/patches/011-recent-add-reap.patch
parent05236294f3fa66bef05f83cc6dc4d8bc56a1b4b4 (diff)
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iptables: add support for ipt_recent --reap option
SVN-Revision: 26008
Diffstat (limited to 'package/iptables/patches/011-recent-add-reap.patch')
-rw-r--r--package/iptables/patches/011-recent-add-reap.patch122
1 files changed, 122 insertions, 0 deletions
diff --git a/package/iptables/patches/011-recent-add-reap.patch b/package/iptables/patches/011-recent-add-reap.patch
new file mode 100644
index 0000000000..082c4c5ec0
--- /dev/null
+++ b/package/iptables/patches/011-recent-add-reap.patch
@@ -0,0 +1,122 @@
+From 20c706d4cba3227c9c44fb61c4d93b0ae84e1464 Mon Sep 17 00:00:00 2001
+From: Tim Gardner <tim.gardner@canonical.com>
+Date: Mon, 1 Mar 2010 19:00:29 -0700
+Subject: [PATCH] xt_recent: Added XT_RECENT_REAP logic and man page documentation
+
+Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
+---
+ extensions/libxt_recent.c | 20 ++++++++++++++++++++
+ extensions/libxt_recent.man | 5 +++++
+ include/linux/netfilter/xt_recent.h | 7 +++++++
+ 3 files changed, 32 insertions(+), 0 deletions(-)
+
+diff --git a/extensions/libxt_recent.c b/extensions/libxt_recent.c
+index 4ac32f7..7e3d280 100644
+--- a/extensions/libxt_recent.c
++++ b/extensions/libxt_recent.c
+@@ -20,6 +20,7 @@ static const struct option recent_opts[] = {
+ {.name = "name", .has_arg = true, .val = 208},
+ {.name = "rsource", .has_arg = false, .val = 209},
+ {.name = "rdest", .has_arg = false, .val = 210},
++ {.name = "reap", .has_arg = false, .val = 211},
+ XT_GETOPT_TABLEEND,
+ };
+
+@@ -36,6 +37,7 @@ static void recent_help(void)
+ " --hitcount hits For check and update commands above.\n"
+ " Specifies that the match will only occur if source address seen hits times.\n"
+ " May be used in conjunction with the seconds option.\n"
++" --reap Remove entries that have expired. Can only be used with --seconds\n"
+ " --rttl For check and update commands above.\n"
+ " Specifies that the match will only occur if the source address and the TTL\n"
+ " match between this packet and the one which was set.\n"
+@@ -62,6 +64,8 @@ static void recent_init(struct xt_entry_match *match)
+ (XT_RECENT_SET | XT_RECENT_CHECK | \
+ XT_RECENT_UPDATE | XT_RECENT_REMOVE)
+
++#define XT_RECENT_SECONDS 1 << 31
++
+ static int recent_parse(int c, char **argv, int invert, unsigned int *flags,
+ const void *entry, struct xt_entry_match **match)
+ {
+@@ -103,6 +107,7 @@ static int recent_parse(int c, char **argv, int invert, unsigned int *flags,
+
+ case 204:
+ info->seconds = atoi(optarg);
++ *flags |= XT_RECENT_SECONDS;
+ break;
+
+ case 205:
+@@ -138,6 +143,11 @@ static int recent_parse(int c, char **argv, int invert, unsigned int *flags,
+ info->side = XT_RECENT_DEST;
+ break;
+
++ case 211:
++ info->check_set |= XT_RECENT_REAP;
++ *flags |= XT_RECENT_REAP;
++ break;
++
+ default:
+ return 0;
+ }
+@@ -156,6 +166,12 @@ static void recent_check(unsigned int flags)
+ xtables_error(PARAMETER_PROBLEM,
+ "recent: --rttl may only be used with --rcheck or "
+ "--update");
++ if ((flags & XT_RECENT_REAP) &&
++ ((flags & (XT_RECENT_SET | XT_RECENT_REMOVE)) ||
++ (!(flags & XT_RECENT_SECONDS))))
++ xtables_error(PARAMETER_PROBLEM,
++ "recent: --reap may only be used with --rcheck or "
++ "--update and --seconds");
+ }
+
+ static void recent_print(const void *ip, const struct xt_entry_match *match,
+@@ -185,6 +201,8 @@
+ printf("side: source ");
+ if (info->side == XT_RECENT_DEST)
+ printf("side: dest ");
++ if (info->check_set & XT_RECENT_REAP)
++ printf("reap ");
+ }
+
+ static void recent_save(const void *ip, const struct xt_entry_match *match)
+@@ -210,6 +228,8 @@ static void recent_save(const void *ip, const struct xt_entry_match *match)
+ printf("--rsource ");
+ if (info->side == XT_RECENT_DEST)
+ printf("--rdest ");
++ if (info->check_set & XT_RECENT_REAP)
++ printf("--reap ");
+ }
+
+ static struct xtables_match recent_mt_reg = {
+diff --git a/extensions/libxt_recent.man b/extensions/libxt_recent.man
+index 532c328..26e4fb9 100644
+--- a/extensions/libxt_recent.man
++++ b/extensions/libxt_recent.man
+@@ -41,6 +41,11 @@ This option must be used in conjunction with one of \fB\-\-rcheck\fP or
+ \fB\-\-update\fP. When used, this will narrow the match to only happen when the
+ address is in the list and was seen within the last given number of seconds.
+ .TP
++\fB\-\-reap\fP \fIreap\fP
++This option must be used in conjunction with \fB\-\-seconds\fP. When used, this
++will remove entries with the most recent timestamp older then \fB\-\-seconds\fP
++since the last packet was received.
++.TP
+ \fB\-\-hitcount\fP \fIhits\fP
+ This option must be used in conjunction with one of \fB\-\-rcheck\fP or
+ \fB\-\-update\fP. When used, this will narrow the match to only happen when the
+diff --git a/include/linux/netfilter/xt_recent.h b/include/linux/netfilter/xt_recent.h
+index d2c2766..e21acdf 100644
+--- a/include/linux/netfilter/xt_recent.h
++++ b/include/linux/netfilter/xt_recent.h
+@@ -16,6 +17,9 @@ enum {
+ XT_RECENT_NAME_LEN = 200,
+ };
+
++/* Only allowed with --rcheck and --update */
++#define XT_RECENT_MODIFIERS (XT_RECENT_TTL|XT_RECENT_REAP)
++
+ struct xt_recent_mtinfo {
+ __u32 seconds;
+ __u32 hit_count;