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-rw-r--r--package/openswan/linux-2.6.20.3-openswan-2.4.7.kernel-2.6-natt.patch158
1 files changed, 158 insertions, 0 deletions
diff --git a/package/openswan/linux-2.6.20.3-openswan-2.4.7.kernel-2.6-natt.patch b/package/openswan/linux-2.6.20.3-openswan-2.4.7.kernel-2.6-natt.patch
new file mode 100644
index 000000000..923261396
--- /dev/null
+++ b/package/openswan/linux-2.6.20.3-openswan-2.4.7.kernel-2.6-natt.patch
@@ -0,0 +1,158 @@
+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
+@@ -0,0 +1,10 @@
++/*
++ * pointer to function for type that xfrm4_input wants, to permit
++ * decoupling of XFRM from udp.c
++ */
++#define HAVE_XFRM4_UDP_REGISTER
++
++typedef int (*xfrm4_rcv_encap_t)(struct sk_buff *skb, __u16 encap_type);
++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 @@
+
++config IPSEC_NAT_TRAVERSAL
++ bool "IPSEC NAT-Traversal (KLIPS compatible)"
++ depends on INET
++ ---help---
++ Includes support for RFC3947/RFC3948 NAT-Traversal of ESP over UDP.
++
+ config IP_TCPDIAG
+--- plain26/net/ipv4/udp.c.orig 2006-01-02 22:21:10.000000000 -0500
++++ plain26/net/ipv4/udp.c 2006-01-10 20:07:21.000000000 -0500
+@@ -108,11 +108,14 @@
+ #include <net/checksum.h>
+ #include <net/xfrm.h>
++#include <net/xfrmudp.h>
+ #include "udp_impl.h"
+
+ /*
+ * Snmp MIB for the UDP layer
+ */
+
++static xfrm4_rcv_encap_t xfrm4_rcv_encap_func;
++
+ DEFINE_SNMP_STAT(struct udp_mib, udp_statistics) __read_mostly;
+
+ struct hlist_head udp_hash[UDP_HTABLE_SIZE];
+@@ -894,6 +897,42 @@
+ sk_common_release(sk);
+ }
+
++#if defined(CONFIG_XFRM) || defined(CONFIG_IPSEC_NAT_TRAVERSAL)
++
++/* if XFRM isn't a module, then register it directly. */
++#if 0 && !defined(CONFIG_XFRM_MODULE) && !defined(CONFIG_IPSEC_NAT_TRAVERSAL)
++static xfrm4_rcv_encap_t xfrm4_rcv_encap_func = xfrm4_rcv_encap;
++#else
++static xfrm4_rcv_encap_t xfrm4_rcv_encap_func = NULL;
++#endif
++
++int udp4_register_esp_rcvencap(xfrm4_rcv_encap_t func
++ , xfrm4_rcv_encap_t *oldfunc)
++{
++ if(oldfunc != NULL) {
++ *oldfunc = xfrm4_rcv_encap_func;
++ }
++
++#if 0
++ if(xfrm4_rcv_encap_func != NULL)
++ return -1;
++#endif
++
++ xfrm4_rcv_encap_func = func;
++ return 0;
++}
++
++int udp4_unregister_esp_rcvencap(xfrm4_rcv_encap_t func)
++{
++ if(xfrm4_rcv_encap_func != func)
++ return -1;
++
++ xfrm4_rcv_encap_func = NULL;
++ return 0;
++}
++#endif /* CONFIG_XFRM_MODULE || CONFIG_IPSEC_NAT_TRAVERSAL */
++
++
+ /* return:
+ * 1 if the the UDP system should process it
+ * 0 if we should drop this packet
+@@ -901,9 +940,9 @@
+ */
+ static int udp_encap_rcv(struct sock * sk, struct sk_buff *skb)
+ {
+-#ifndef CONFIG_XFRM
++#if !defined(CONFIG_XFRM) && !defined(CONFIG_IPSEC_NAT_TRAVERSAL)
+ return 1;
+-#else
++#else /* either CONFIG_XFRM or CONFIG_IPSEC_NAT_TRAVERSAL */
+ struct udp_sock *up = udp_sk(sk);
+ struct udphdr *uh = skb->h.uh;
+ struct iphdr *iph;
+@@ -915,11 +954,11 @@
+ /* if we're overly short, let UDP handle it */
+ len = skb->len - sizeof(struct udphdr);
+ if (len <= 0)
+- return 1;
++ return 2;
+
+ /* if this is not encapsulated socket, then just return now */
+ if (!encap_type)
+- return 1;
++ return 3;
+
+ /* If this is a paged skb, make sure we pull up
+ * whatever data we need to look at. */
+@@ -934,7 +973,7 @@
+ len = sizeof(struct udphdr);
+ } else
+ /* Must be an IKE packet.. pass it through */
+- return 1;
++ return 4;
+ break;
+ case UDP_ENCAP_ESPINUDP_NON_IKE:
+ /* Check if this is a keepalive packet. If so, eat it. */
+@@ -947,7 +986,7 @@
+ len = sizeof(struct udphdr) + 2 * sizeof(u32);
+ } else
+ /* Must be an IKE packet.. pass it through */
+- return 1;
++ return 5;
+ break;
+ }
+
+@@ -1021,10 +1060,14 @@
+ return 0;
+ }
+ if (ret < 0) {
+- /* process the ESP packet */
+- ret = xfrm4_rcv_encap(skb, up->encap_type);
+- UDP_INC_STATS_BH(UDP_MIB_INDATAGRAMS, up->pcflag);
+- return -ret;
++ if(xfrm4_rcv_encap_func != NULL) {
++ ret = (*xfrm4_rcv_encap_func)(skb, up->encap_type);
++ UDP_INC_STATS_BH(UDP_MIB_INDATAGRAMS, up->pcflag);
++ } else {
++ UDP_INC_STATS_BH(UDP_MIB_INERRORS, up->pcflag);
++ ret = 1;
++ }
++ return ret;
+ }
+ /* FALLTHROUGH -- it's a UDP Packet */
+ }
+@@ -1571,3 +1613,9 @@
+ EXPORT_SYMBOL(udp_proc_register);
+ EXPORT_SYMBOL(udp_proc_unregister);
+ #endif
++
++#if defined(CONFIG_IPSEC_NAT_TRAVERSAL)
++EXPORT_SYMBOL(udp4_register_esp_rcvencap);
++EXPORT_SYMBOL(udp4_unregister_esp_rcvencap);
++#endif
++