mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2025-10-30 21:44:27 -04:00
142 lines
3.2 KiB
Diff
142 lines
3.2 KiB
Diff
packaging/utils/nattpatch 2.4
|
|
--- a/include/net/sock.h
|
|
+++ b/include/net/sock.h
|
|
@@ -488,7 +488,13 @@ struct tcp_opt {
|
|
} bictcp;
|
|
};
|
|
|
|
-
|
|
+#if 1
|
|
+#define UDP_OPT_IN_SOCK 1
|
|
+struct udp_opt {
|
|
+ __u32 esp_in_udp;
|
|
+};
|
|
+#endif
|
|
+
|
|
/*
|
|
* This structure really needs to be cleaned up.
|
|
* Most of it is for TCP, and not used by any of
|
|
@@ -655,6 +661,9 @@ struct sock {
|
|
#if defined(CONFIG_SPX) || defined (CONFIG_SPX_MODULE)
|
|
struct spx_opt af_spx;
|
|
#endif /* CONFIG_SPX */
|
|
+#if 1
|
|
+ struct udp_opt af_udp;
|
|
+#endif
|
|
|
|
} tp_pinfo;
|
|
|
|
--- a/net/Config.in
|
|
+++ b/net/Config.in
|
|
@@ -104,4 +104,6 @@ comment 'Network testing'
|
|
dep_tristate 'Packet Generator (USE WITH CAUTION)' CONFIG_NET_PKTGEN $CONFIG_PROC_FS
|
|
endmenu
|
|
|
|
+bool 'IPSEC NAT-Traversal' CONFIG_IPSEC_NAT_TRAVERSAL
|
|
+
|
|
endmenu
|
|
--- a/net/ipv4/udp.c
|
|
+++ b/net/ipv4/udp.c
|
|
@@ -860,6 +860,9 @@ static void udp_close(struct sock *sk, l
|
|
|
|
static int udp_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
|
|
{
|
|
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
|
|
+ struct udp_opt *tp = &(sk->tp_pinfo.af_udp);
|
|
+#endif
|
|
/*
|
|
* Charge it to the socket, dropping if the queue is full.
|
|
*/
|
|
@@ -877,6 +880,40 @@ static int udp_queue_rcv_skb(struct sock
|
|
}
|
|
#endif
|
|
|
|
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
|
|
+ if (tp->esp_in_udp) {
|
|
+ /*
|
|
+ * Set skb->sk and xmit packet to ipsec_rcv.
|
|
+ *
|
|
+ * If ret != 0, ipsec_rcv refused the packet (not ESPinUDP),
|
|
+ * restore skb->sk and fall back to sock_queue_rcv_skb
|
|
+ */
|
|
+ struct inet_protocol *esp = NULL;
|
|
+
|
|
+#if defined(CONFIG_KLIPS) && !defined(CONFIG_KLIPS_MODULE)
|
|
+ /* optomize only when we know it is statically linked */
|
|
+ extern struct inet_protocol esp_protocol;
|
|
+ esp = &esp_protocol;
|
|
+#else
|
|
+ for (esp = (struct inet_protocol *)inet_protos[IPPROTO_ESP & (MAX_INET_PROTOS - 1)];
|
|
+ (esp) && (esp->protocol != IPPROTO_ESP);
|
|
+ esp = esp->next);
|
|
+#endif
|
|
+
|
|
+ if (esp && esp->handler) {
|
|
+ struct sock *sav_sk = skb->sk;
|
|
+ skb->sk = sk;
|
|
+ if (esp->handler(skb) == 0) {
|
|
+ skb->sk = sav_sk;
|
|
+ /*not sure we might count ESPinUDP as UDP...*/
|
|
+ UDP_INC_STATS_BH(UdpInDatagrams);
|
|
+ return 0;
|
|
+ }
|
|
+ skb->sk = sav_sk;
|
|
+ }
|
|
+ }
|
|
+#endif
|
|
+
|
|
if (sock_queue_rcv_skb(sk,skb)<0) {
|
|
UDP_INC_STATS_BH(UdpInErrors);
|
|
IP_INC_STATS_BH(IpInDiscards);
|
|
@@ -1100,13 +1137,49 @@ out:
|
|
return len;
|
|
}
|
|
|
|
+static int udp_setsockopt(struct sock *sk, int level, int optname,
|
|
+ char *optval, int optlen)
|
|
+{
|
|
+ struct udp_opt *tp = &(sk->tp_pinfo.af_udp);
|
|
+ int val;
|
|
+ int err = 0;
|
|
+
|
|
+ if (level != SOL_UDP)
|
|
+ return ip_setsockopt(sk, level, optname, optval, optlen);
|
|
+
|
|
+ if(optlen<sizeof(int))
|
|
+ return -EINVAL;
|
|
+
|
|
+ if (get_user(val, (int *)optval))
|
|
+ return -EFAULT;
|
|
+
|
|
+ lock_sock(sk);
|
|
+
|
|
+ switch(optname) {
|
|
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
|
|
+#ifndef UDP_ESPINUDP
|
|
+#define UDP_ESPINUDP 100
|
|
+#endif
|
|
+ case UDP_ESPINUDP:
|
|
+ tp->esp_in_udp = val;
|
|
+ break;
|
|
+#endif
|
|
+ default:
|
|
+ err = -ENOPROTOOPT;
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ release_sock(sk);
|
|
+ return err;
|
|
+}
|
|
+
|
|
struct proto udp_prot = {
|
|
name: "UDP",
|
|
close: udp_close,
|
|
connect: udp_connect,
|
|
disconnect: udp_disconnect,
|
|
ioctl: udp_ioctl,
|
|
- setsockopt: ip_setsockopt,
|
|
+ setsockopt: udp_setsockopt,
|
|
getsockopt: ip_getsockopt,
|
|
sendmsg: udp_sendmsg,
|
|
recvmsg: udp_recvmsg,
|