diff options
Diffstat (limited to 'package/network/utils/iptables/patches/011-recent-add-reap.patch')
| -rw-r--r-- | package/network/utils/iptables/patches/011-recent-add-reap.patch | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/package/network/utils/iptables/patches/011-recent-add-reap.patch b/package/network/utils/iptables/patches/011-recent-add-reap.patch new file mode 100644 index 0000000..275265b --- /dev/null +++ b/package/network/utils/iptables/patches/011-recent-add-reap.patch @@ -0,0 +1,116 @@ +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(-) + +--- 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, + }; + +@@ -37,6 +38,7 @@ 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" +@@ -63,6 +65,8 @@ static void recent_init(struct xt_entry_ + (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) + { +@@ -104,6 +108,7 @@ static int recent_parse(int c, char **ar + + case 204: + info->seconds = atoi(optarg); ++ *flags |= XT_RECENT_SECONDS; + break; + + case 205: +@@ -139,6 +144,11 @@ static int recent_parse(int c, char **ar + info->side = XT_RECENT_DEST; + break; + ++ case 211: ++ info->check_set |= XT_RECENT_REAP; ++ *flags |= XT_RECENT_REAP; ++ break; ++ + default: + return 0; + } +@@ -157,6 +167,12 @@ static void recent_check(unsigned int fl + 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 @@ static void recent_print(const void *ip, + 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) +@@ -211,6 +229,8 @@ static void recent_save(const void *ip, + 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 = { +--- a/extensions/libxt_recent.man ++++ b/extensions/libxt_recent.man +@@ -41,6 +41,11 @@ This option must be used in conjunction + \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 +--- a/include/linux/netfilter/xt_recent.h ++++ b/include/linux/netfilter/xt_recent.h +@@ -23,6 +23,9 @@ enum { + #define XT_RECENT_VALID_FLAGS (XT_RECENT_CHECK|XT_RECENT_SET|XT_RECENT_UPDATE|\ + XT_RECENT_REMOVE|XT_RECENT_TTL|XT_RECENT_REAP) + ++/* 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; |