-packaging/utils/nattpatch 2.6
---- /dev/null Tue Mar 11 13:02:56 2003
-+++ nat-t/include/net/xfrmudp.h Mon Feb 9 13:51:03 2004
+diff -urN linux-2.6.19.old/include/net/xfrmudp.h linux-2.6.19.dev/include/net/xfrmudp.h
+--- linux-2.6.19.old/include/net/xfrmudp.h 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.19.dev/include/net/xfrmudp.h 2006-12-14 03:13:41.000000000 +0100
@@ -0,0 +1,10 @@
+/*
+ * pointer to function for type that xfrm4_input wants, to permit
+extern int udp4_register_esp_rcvencap(xfrm4_rcv_encap_t func
+ , xfrm4_rcv_encap_t *oldfunc);
+extern int udp4_unregister_esp_rcvencap(xfrm4_rcv_encap_t func);
---- /distros/kernel/linux-2.6.11.2/net/ipv4/Kconfig 2005-03-09 03:12:33.000000000 -0500
-+++ swan26/net/ipv4/Kconfig 2005-04-04 18:46:13.000000000 -0400
-@@ -351,2 +351,8 @@
+diff -urN linux-2.6.19.old/net/ipv4/Kconfig linux-2.6.19.dev/net/ipv4/Kconfig
+--- linux-2.6.19.old/net/ipv4/Kconfig 2006-11-29 22:57:37.000000000 +0100
++++ linux-2.6.19.dev/net/ipv4/Kconfig 2006-12-14 03:13:41.000000000 +0100
+@@ -273,6 +273,12 @@
+ Network), but can be distributed all over the Internet. If you want
+ to do that, say Y here and to "IP multicast routing" below.
+config IPSEC_NAT_TRAVERSAL
+ bool "IPSEC NAT-Traversal (KLIPS compatible)"
+ ---help---
+ Includes support for RFC3947/RFC3948 NAT-Traversal of ESP over UDP.
+
- config IP_TCPDIAG
---- /distros/kernel/linux-2.6.11.2/./net/ipv4/udp.c 2005-03-09 03:11:09.000000000 -0500
-+++ ./net/ipv4/udp.c 2005-04-09 20:46:46.000000000 -0400
-@@ -109,2 +109,3 @@
+ config IP_MROUTE
+ bool "IP: multicast routing"
+ depends on IP_MULTICAST
+diff -urN linux-2.6.19.old/net/ipv4/udp.c linux-2.6.19.dev/net/ipv4/udp.c
+--- linux-2.6.19.old/net/ipv4/udp.c 2006-11-29 22:57:37.000000000 +0100
++++ linux-2.6.19.dev/net/ipv4/udp.c 2006-12-14 03:13:41.000000000 +0100
+@@ -108,11 +108,14 @@
+ #include <net/inet_common.h>
+ #include <net/checksum.h>
#include <net/xfrm.h>
+#include <net/xfrmudp.h>
-@@ -114,2 +115,4 @@
+ /*
+ * Snmp MIB for the UDP layer
+ */
+static xfrm4_rcv_encap_t xfrm4_rcv_encap_func;
+
- DEFINE_SNMP_STAT(struct udp_mib, udp_statistics);
-@@ -894,2 +897,38 @@
+ DEFINE_SNMP_STAT(struct udp_mib, udp_statistics) __read_mostly;
+
+ struct hlist_head udp_hash[UDP_HTABLE_SIZE];
+@@ -917,6 +920,42 @@
+ sk_common_release(sk);
+ }
+#if defined(CONFIG_XFRM) || defined(CONFIG_IPSEC_NAT_TRAVERSAL)
+
+
+
/* return:
-@@ -901,5 +940,5 @@
+ * 1 if the the UDP system should process it
+ * 0 if we should drop this packet
+@@ -924,9 +963,9 @@
+ */
+ static int udp_encap_rcv(struct sock * sk, struct sk_buff *skb)
{
-#ifndef CONFIG_XFRM
+#if !defined(CONFIG_XFRM) && !defined(CONFIG_IPSEC_NAT_TRAVERSAL)
-#else
+#else /* either CONFIG_XFRM or CONFIG_IPSEC_NAT_TRAVERSAL */
struct udp_sock *up = udp_sk(sk);
-@@ -915,3 +954,3 @@
- if (udpdata > skb->tail)
+ struct udphdr *uh;
+ struct iphdr *iph;
+@@ -939,11 +978,11 @@
+ /* if we're overly short, let UDP handle it */
+ len = skb->len - sizeof(struct udphdr);
+ if (len <= 0)
- return 1;
+ return 2;
-@@ -919,3 +958,3 @@
+ /* if this is not encapsulated socket, then just return now */
if (!encap_type)
- return 1;
+ return 3;
-@@ -934,3 +973,3 @@
+ /* If this is a paged skb, make sure we pull up
+ * whatever data we need to look at. */
+@@ -966,7 +1005,7 @@
+ len = sizeof(struct udphdr);
+ } else
/* Must be an IKE packet.. pass it through */
- return 1;
+ return 4;
break;
-@@ -947,3 +986,3 @@
+ case UDP_ENCAP_ESPINUDP_NON_IKE:
+ /* Check if this is a keepalive packet. If so, eat it. */
+@@ -979,7 +1018,7 @@
+ len = sizeof(struct udphdr) + 2 * sizeof(u32);
+ } else
/* Must be an IKE packet.. pass it through */
- return 1;
+ return 5;
break;
-@@ -956,2 +995,4 @@
+ }
+
+@@ -990,6 +1029,8 @@
*/
+ if (skb_cloned(skb) && pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
+ return 0;
+ if (skb_cloned(skb) && pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
+ return 0;
-@@ -1019,5 +1060,9 @@
+ /* Now we can update and verify the packet length... */
+ iph = skb->nh.iph;
+@@ -1055,9 +1096,13 @@
+ return 0;
+ }
if (ret < 0) {
- /* process the ESP packet */
- ret = xfrm4_rcv_encap(skb, up->encap_type);
+ ret = 1;
+ }
return -ret;
-@@ -1574 +1619,7 @@
+ }
+ /* FALLTHROUGH -- it's a UDP Packet */
+@@ -1639,3 +1684,9 @@
+ EXPORT_SYMBOL(udp_proc_register);
+ EXPORT_SYMBOL(udp_proc_unregister);
#endif
+
+#if defined(CONFIG_IPSEC_NAT_TRAVERSAL)