diff options
Diffstat (limited to 'package/openswan/linux-2.6.20.4-openswan-2.4.7.kernel-2.6-natt.patch')
| -rw-r--r-- | package/openswan/linux-2.6.20.4-openswan-2.4.7.kernel-2.6-natt.patch | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/package/openswan/linux-2.6.20.4-openswan-2.4.7.kernel-2.6-natt.patch b/package/openswan/linux-2.6.20.4-openswan-2.4.7.kernel-2.6-natt.patch new file mode 100644 index 000000000..923261396 --- /dev/null +++ b/package/openswan/linux-2.6.20.4-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 ++ |