diff options
Diffstat (limited to 'target/linux/generic-2.6/patches-2.6.23/120-openswan-2.4.0.kernel-2.6-natt.patch')
| -rw-r--r-- | target/linux/generic-2.6/patches-2.6.23/120-openswan-2.4.0.kernel-2.6-natt.patch | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.23/120-openswan-2.4.0.kernel-2.6-natt.patch b/target/linux/generic-2.6/patches-2.6.23/120-openswan-2.4.0.kernel-2.6-natt.patch new file mode 100644 index 0000000000..6fcacc4599 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.23/120-openswan-2.4.0.kernel-2.6-natt.patch @@ -0,0 +1,97 @@ +Index: linux-2.6.23-rc7/include/net/xfrmudp.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.23-rc7/include/net/xfrmudp.h 2007-10-02 00:58:05.000000000 +0800 +@@ -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); +Index: linux-2.6.23-rc7/net/ipv4/Kconfig +=================================================================== +--- linux-2.6.23-rc7.orig/net/ipv4/Kconfig 2007-10-02 00:58:02.000000000 +0800 ++++ linux-2.6.23-rc7/net/ipv4/Kconfig 2007-10-02 00:58:05.000000000 +0800 +@@ -224,6 +224,12 @@ + 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)" ++ depends on INET ++ ---help--- ++ Includes support for RFC3947/RFC3948 NAT-Traversal of ESP over UDP. ++ + config IP_MROUTE + bool "IP: multicast routing" + depends on IP_MULTICAST +Index: linux-2.6.23-rc7/net/ipv4/xfrm4_input.c +=================================================================== +--- linux-2.6.23-rc7.orig/net/ipv4/xfrm4_input.c 2007-10-02 00:58:02.000000000 +0800 ++++ linux-2.6.23-rc7/net/ipv4/xfrm4_input.c 2007-10-02 00:58:33.000000000 +0800 +@@ -15,6 +15,7 @@ + #include <linux/netfilter_ipv4.h> + #include <net/ip.h> + #include <net/xfrm.h> ++#include <net/xfrmudp.h> + + static int xfrm4_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq) + { +@@ -161,6 +162,29 @@ + return 0; + } + ++#ifdef CONFIG_IPSEC_NAT_TRAVERSAL ++static xfrm4_rcv_encap_t xfrm4_rcv_encap_func = NULL; ++ ++int udp4_register_esp_rcvencap(xfrm4_rcv_encap_t func, ++ xfrm4_rcv_encap_t *oldfunc) ++{ ++ if(oldfunc != NULL) ++ *oldfunc = xfrm4_rcv_encap_func; ++ ++ 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_IPSEC_NAT_TRAVERSAL */ ++ + /* If it's a keepalive packet, then just eat it. + * If it's an encapsulated packet, then pass it to the + * IPsec xfrm input. +@@ -251,7 +275,13 @@ + iph->protocol = IPPROTO_ESP; + + /* process ESP */ ++#ifdef CONFIG_IPSEC_NAT_TRAVERSAL ++ if(xfrm4_rcv_encap_func == NULL) ++ goto drop; ++ ret = (*xfrm4_rcv_encap_func)(skb, up->encap_type); ++#else + ret = xfrm4_rcv_encap(skb, encap_type); ++#endif + return ret; + + drop: +@@ -265,3 +295,8 @@ + } + + EXPORT_SYMBOL(xfrm4_rcv); ++ ++#ifdef CONFIG_IPSEC_NAT_TRAVERSAL ++EXPORT_SYMBOL(udp4_register_esp_rcvencap); ++EXPORT_SYMBOL(udp4_unregister_esp_rcvencap); ++#endif |