diff options
Diffstat (limited to 'target/linux/generic-2.6/patches/102-openswan-2.4.0.kernel-2.6-natt.patch')
| -rw-r--r-- | target/linux/generic-2.6/patches/102-openswan-2.4.0.kernel-2.6-natt.patch | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches/102-openswan-2.4.0.kernel-2.6-natt.patch b/target/linux/generic-2.6/patches/102-openswan-2.4.0.kernel-2.6-natt.patch new file mode 100644 index 0000000000..6d6939beee --- /dev/null +++ b/target/linux/generic-2.6/patches/102-openswan-2.4.0.kernel-2.6-natt.patch @@ -0,0 +1,171 @@ +diff -Nur linux-2.6.16/include/net/xfrmudp.h linux-2.6.16-owrt/include/net/xfrmudp.h +--- linux-2.6.16/include/net/xfrmudp.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.16-owrt/include/net/xfrmudp.h 2006-03-22 21:39:54.000000000 +0100 +@@ -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); +diff -Nur linux-2.6.16/net/ipv4/Kconfig linux-2.6.16-owrt/net/ipv4/Kconfig +--- linux-2.6.16/net/ipv4/Kconfig 2006-03-20 06:53:29.000000000 +0100 ++++ linux-2.6.16-owrt/net/ipv4/Kconfig 2006-03-22 21:49:04.000000000 +0100 +@@ -271,6 +271,12 @@ + 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 +diff -Nur linux-2.6.16/net/ipv4/udp.c linux-2.6.16-owrt/net/ipv4/udp.c +--- linux-2.6.16/net/ipv4/udp.c 2006-03-20 06:53:29.000000000 +0100 ++++ linux-2.6.16-owrt/net/ipv4/udp.c 2006-03-22 21:39:54.000000000 +0100 +@@ -109,11 +109,14 @@ + #include <net/inet_common.h> + #include <net/checksum.h> + #include <net/xfrm.h> ++#include <net/xfrmudp.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]; +@@ -882,6 +885,42 @@ + 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 +@@ -889,9 +928,9 @@ + */ + 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; +@@ -903,11 +942,11 @@ + + /* if we're overly short, let UDP handle it */ + if (udpdata > skb->tail) +- return 1; ++ return 2; + + /* if this is not encapsulated socket, then just return now */ + if (!encap_type) +- return 1; ++ return 3; + + len = skb->tail - udpdata; + +@@ -922,7 +961,7 @@ + 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. */ +@@ -935,7 +974,7 @@ + len = sizeof(struct udphdr) + 2 * sizeof(u32); + } else + /* Must be an IKE packet.. pass it through */ +- return 1; ++ return 5; + break; + } + +@@ -946,6 +985,8 @@ + */ + 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; + + /* Now we can update and verify the packet length... */ + iph = skb->nh.iph; +@@ -1010,9 +1051,13 @@ + return 0; + } + if (ret < 0) { +- /* process the ESP packet */ +- ret = xfrm4_rcv_encap(skb, up->encap_type); +- UDP_INC_STATS_BH(UDP_MIB_INDATAGRAMS); ++ if(xfrm4_rcv_encap_func != NULL) { ++ ret = (*xfrm4_rcv_encap_func)(skb, up->encap_type); ++ UDP_INC_STATS_BH(UDP_MIB_INDATAGRAMS); ++ } else { ++ UDP_INC_STATS_BH(UDP_MIB_INERRORS); ++ ret = 1; ++ } + return -ret; + } + /* FALLTHROUGH -- it's a UDP Packet */ +@@ -1559,3 +1604,9 @@ + 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 ++ |