+++ /dev/null
-diff -urN linux-2.4.30.old/Documentation/Configure.help linux-2.4.30.dev/Documentation/Configure.help
---- linux-2.4.30.old/Documentation/Configure.help 2005-04-27 11:35:46.000000000 +0200
-+++ linux-2.4.30.dev/Documentation/Configure.help 2005-04-27 11:43:49.000000000 +0200
-@@ -3209,6 +3209,15 @@
- If you want to compile it as a module, say M here and read
- <file:Documentation/modules.txt>. If unsure, say `N'.
-
-+TTL target support
-+CONFIG_IP_NF_TARGET_TTL
-+ This option adds a `TTL' target, which enables the user to set
-+ the TTL value or increment / decrement the TTL value by a given
-+ amount.
-+
-+ If you want to compile it as a module, say M here and read
-+ Documentation/modules.txt. If unsure, say `N'.
-+
- ipchains (2.2-style) support
- CONFIG_IP_NF_COMPAT_IPCHAINS
- This option places ipchains (with masquerading and redirection
-diff -urN linux-2.4.30.old/include/linux/netfilter_ipv4/ipt_TTL.h linux-2.4.30.dev/include/linux/netfilter_ipv4/ipt_TTL.h
---- linux-2.4.30.old/include/linux/netfilter_ipv4/ipt_TTL.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.30.dev/include/linux/netfilter_ipv4/ipt_TTL.h 2005-04-27 11:43:49.000000000 +0200
-@@ -0,0 +1,21 @@
-+/* TTL modification module for IP tables
-+ * (C) 2000 by Harald Welte <laforge@gnumonks.org> */
-+
-+#ifndef _IPT_TTL_H
-+#define _IPT_TTL_H
-+
-+enum {
-+ IPT_TTL_SET = 0,
-+ IPT_TTL_INC,
-+ IPT_TTL_DEC
-+};
-+
-+#define IPT_TTL_MAXMODE IPT_TTL_DEC
-+
-+struct ipt_TTL_info {
-+ u_int8_t mode;
-+ u_int8_t ttl;
-+};
-+
-+
-+#endif
-diff -urN linux-2.4.30.old/net/ipv4/netfilter/Config.in linux-2.4.30.dev/net/ipv4/netfilter/Config.in
---- linux-2.4.30.old/net/ipv4/netfilter/Config.in 2005-04-27 11:35:45.000000000 +0200
-+++ linux-2.4.30.dev/net/ipv4/netfilter/Config.in 2005-04-27 11:43:49.000000000 +0200
-@@ -129,6 +129,7 @@
- dep_tristate ' MARK target support' CONFIG_IP_NF_TARGET_MARK $CONFIG_IP_NF_MANGLE
- fi
- dep_tristate ' LOG target support' CONFIG_IP_NF_TARGET_LOG $CONFIG_IP_NF_IPTABLES
-+ dep_tristate ' TTL target support' CONFIG_IP_NF_TARGET_TTL $CONFIG_IP_NF_IPTABLES
- dep_tristate ' ULOG target support' CONFIG_IP_NF_TARGET_ULOG $CONFIG_IP_NF_IPTABLES
- dep_tristate ' TCPMSS target support' CONFIG_IP_NF_TARGET_TCPMSS $CONFIG_IP_NF_IPTABLES
- fi
-diff -urN linux-2.4.30.old/net/ipv4/netfilter/ipt_TTL.c linux-2.4.30.dev/net/ipv4/netfilter/ipt_TTL.c
---- linux-2.4.30.old/net/ipv4/netfilter/ipt_TTL.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.4.30.dev/net/ipv4/netfilter/ipt_TTL.c 2005-04-27 11:43:49.000000000 +0200
-@@ -0,0 +1,110 @@
-+/* TTL modification target for IP tables
-+ * (C) 2000 by Harald Welte <laforge@gnumonks.org>
-+ *
-+ * Version: $Revision: 1.1 $
-+ *
-+ * This software is distributed under the terms of GNU GPL
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/skbuff.h>
-+#include <linux/ip.h>
-+#include <net/checksum.h>
-+
-+#include <linux/netfilter_ipv4/ip_tables.h>
-+#include <linux/netfilter_ipv4/ipt_TTL.h>
-+
-+MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
-+MODULE_DESCRIPTION("IP tables TTL modification module");
-+MODULE_LICENSE("GPL");
-+
-+static unsigned int ipt_ttl_target(struct sk_buff **pskb, unsigned int hooknum,
-+ const struct net_device *in, const struct net_device *out,
-+ const void *targinfo, void *userinfo)
-+{
-+ struct iphdr *iph = (*pskb)->nh.iph;
-+ const struct ipt_TTL_info *info = targinfo;
-+ u_int16_t diffs[2];
-+ int new_ttl;
-+
-+ switch (info->mode) {
-+ case IPT_TTL_SET:
-+ new_ttl = info->ttl;
-+ break;
-+ case IPT_TTL_INC:
-+ new_ttl = iph->ttl + info->ttl;
-+ if (new_ttl > 255)
-+ new_ttl = 255;
-+ break;
-+ case IPT_TTL_DEC:
-+ new_ttl = iph->ttl - info->ttl;
-+ if (new_ttl < 0)
-+ new_ttl = 0;
-+ break;
-+ default:
-+ new_ttl = iph->ttl;
-+ break;
-+ }
-+
-+ if (new_ttl != iph->ttl) {
-+ diffs[0] = htons(((unsigned)iph->ttl) << 8) ^ 0xFFFF;
-+ iph->ttl = new_ttl;
-+ diffs[1] = htons(((unsigned)iph->ttl) << 8);
-+ iph->check = csum_fold(csum_partial((char *)diffs,
-+ sizeof(diffs),
-+ iph->check^0xFFFF));
-+ (*pskb)->nfcache |= NFC_ALTERED;
-+ }
-+
-+ return IPT_CONTINUE;
-+}
-+
-+static int ipt_ttl_checkentry(const char *tablename,
-+ const struct ipt_entry *e,
-+ void *targinfo,
-+ unsigned int targinfosize,
-+ unsigned int hook_mask)
-+{
-+ struct ipt_TTL_info *info = targinfo;
-+
-+ if (targinfosize != IPT_ALIGN(sizeof(struct ipt_TTL_info))) {
-+ printk(KERN_WARNING "TTL: targinfosize %u != %Zu\n",
-+ targinfosize,
-+ IPT_ALIGN(sizeof(struct ipt_TTL_info)));
-+ return 0;
-+ }
-+
-+ if (strcmp(tablename, "mangle")) {
-+ printk(KERN_WARNING "TTL: can only be called from \"mangle\" table, not \"%s\"\n", tablename);
-+ return 0;
-+ }
-+
-+ if (info->mode > IPT_TTL_MAXMODE) {
-+ printk(KERN_WARNING "TTL: invalid or unknown Mode %u\n",
-+ info->mode);
-+ return 0;
-+ }
-+
-+ if ((info->mode != IPT_TTL_SET) && (info->ttl == 0)) {
-+ printk(KERN_WARNING "TTL: increment/decrement doesn't make sense with value 0\n");
-+ return 0;
-+ }
-+
-+ return 1;
-+}
-+
-+static struct ipt_target ipt_TTL = { { NULL, NULL }, "TTL",
-+ ipt_ttl_target, ipt_ttl_checkentry, NULL, THIS_MODULE };
-+
-+static int __init init(void)
-+{
-+ return ipt_register_target(&ipt_TTL);
-+}
-+
-+static void __exit fini(void)
-+{
-+ ipt_unregister_target(&ipt_TTL);
-+}
-+
-+module_init(init);
-+module_exit(fini);
-diff -urN linux-2.4.30.old/net/ipv4/netfilter/Makefile linux-2.4.30.dev/net/ipv4/netfilter/Makefile
---- linux-2.4.30.old/net/ipv4/netfilter/Makefile 2005-04-27 11:35:45.000000000 +0200
-+++ linux-2.4.30.dev/net/ipv4/netfilter/Makefile 2005-04-27 11:43:49.000000000 +0200
-@@ -112,6 +112,7 @@
- obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
- obj-$(CONFIG_IP_NF_NAT_SNMP_BASIC) += ip_nat_snmp_basic.o
- obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o
-+obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o
- obj-$(CONFIG_IP_NF_TARGET_ULOG) += ipt_ULOG.o
- obj-$(CONFIG_IP_NF_TARGET_TCPMSS) += ipt_TCPMSS.o
-
projects / openwrt / staging / dedeckeh.git / blobdiff