diff options
Diffstat (limited to 'target/linux/generic-2.4/patches/605-netfilter_TTL.patch')
-rw-r--r-- | target/linux/generic-2.4/patches/605-netfilter_TTL.patch | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/target/linux/generic-2.4/patches/605-netfilter_TTL.patch b/target/linux/generic-2.4/patches/605-netfilter_TTL.patch deleted file mode 100644 index 3abff50f95..0000000000 --- a/target/linux/generic-2.4/patches/605-netfilter_TTL.patch +++ /dev/null @@ -1,175 +0,0 @@ ---- a/Documentation/Configure.help -+++ b/Documentation/Configure.help -@@ -3220,6 +3220,15 @@ CONFIG_IP_NF_TARGET_CLASSIFY - If you want to compile it as a module, say M here and read - 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 ---- /dev/null -+++ b/include/linux/netfilter_ipv4/ipt_TTL.h -@@ -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 ---- a/net/ipv4/netfilter/Config.in -+++ b/net/ipv4/netfilter/Config.in -@@ -110,6 +110,7 @@ if [ "$CONFIG_IP_NF_IPTABLES" != "n" ]; - dep_tristate ' CLASSIFY target support (EXPERIMENTAL)' CONFIG_IP_NF_TARGET_CLASSIFY $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 ---- /dev/null -+++ b/net/ipv4/netfilter/ipt_TTL.c -@@ -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); ---- a/net/ipv4/netfilter/Makefile -+++ b/net/ipv4/netfilter/Makefile -@@ -101,6 +101,7 @@ obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += - obj-$(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 - |