check in the original version of dde linux26.

1 files changed, 92 insertions, 0 deletions

diff --git a/libdde_linux26/contrib/include/linux/udp.h b/libdde_linux26/contrib/include/linux/udp.h
new file mode 100644
index 00000000..0cf5c4c0
--- /dev/null
+++ b/libdde_linux26/contrib/include/linux/udp.h
@@ -0,0 +1,92 @@
+/*
+ * INET		An implementation of the TCP/IP protocol suite for the LINUX
+ *		operating system.  INET is implemented using the  BSD Socket
+ *		interface as the means of communication with the user level.
+ *
+ *		Definitions for the UDP protocol.
+ *
+ * Version:	@(#)udp.h	1.0.2	04/28/93
+ *
+ * Author:	Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ */
+#ifndef _LINUX_UDP_H
+#define _LINUX_UDP_H
+
+#include <linux/types.h>
+
+struct udphdr {
+	__be16	source;
+	__be16	dest;
+	__be16	len;
+	__sum16	check;
+};
+
+/* UDP socket options */
+#define UDP_CORK	1	/* Never send partially complete segments */
+#define UDP_ENCAP	100	/* Set the socket to accept encapsulated packets */
+
+/* UDP encapsulation types */
+#define UDP_ENCAP_ESPINUDP_NON_IKE	1 /* draft-ietf-ipsec-nat-t-ike-00/01 */
+#define UDP_ENCAP_ESPINUDP	2 /* draft-ietf-ipsec-udp-encaps-06 */
+#define UDP_ENCAP_L2TPINUDP	3 /* rfc2661 */
+
+#ifdef __KERNEL__
+#include <net/inet_sock.h>
+#include <linux/skbuff.h>
+#include <net/netns/hash.h>
+
+static inline struct udphdr *udp_hdr(const struct sk_buff *skb)
+{
+	return (struct udphdr *)skb_transport_header(skb);
+}
+
+#define UDP_HTABLE_SIZE		128
+
+static inline int udp_hashfn(struct net *net, const unsigned num)
+{
+	return (num + net_hash_mix(net)) & (UDP_HTABLE_SIZE - 1);
+}
+
+struct udp_sock {
+	/* inet_sock has to be the first member */
+	struct inet_sock inet;
+	int		 pending;	/* Any pending frames ? */
+	unsigned int	 corkflag;	/* Cork is required */
+  	__u16		 encap_type;	/* Is this an Encapsulation socket? */
+	/*
+	 * Following member retains the information to create a UDP header
+	 * when the socket is uncorked.
+	 */
+	__u16		 len;		/* total length of pending frames */
+	/*
+	 * Fields specific to UDP-Lite.
+	 */
+	__u16		 pcslen;
+	__u16		 pcrlen;
+/* indicator bits used by pcflag: */
+#define UDPLITE_BIT      0x1  		/* set by udplite proto init function */
+#define UDPLITE_SEND_CC  0x2  		/* set via udplite setsockopt         */
+#define UDPLITE_RECV_CC  0x4		/* set via udplite setsocktopt        */
+	__u8		 pcflag;        /* marks socket as UDP-Lite if > 0    */
+	__u8		 unused[3];
+	/*
+	 * For encapsulation sockets.
+	 */
+	int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
+};
+
+static inline struct udp_sock *udp_sk(const struct sock *sk)
+{
+	return (struct udp_sock *)sk;
+}
+
+#define IS_UDPLITE(__sk) (udp_sk(__sk)->pcflag)
+
+#endif
+
+#endif	/* _LINUX_UDP_H */