1 files changed, 99 insertions, 0 deletions

diff --git a/include/net/udp.h b/include/net/udp.h
new file mode 100644
index 000000000000..c496d10101db
--- /dev/null
+++ b/include/net/udp.h
@@ -0,0 +1,99 @@
+/*
+ * 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 module.
+ *
+ * Version:     @(#)udp.h       1.0.2   05/07/93
+ *
+ * Authors:     Ross Biro, <bir7@leland.Stanford.Edu>
+ *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *
+ * Fixes:
+ *              Alan Cox        : Turned on udp checksums. I don't want to
+ *                                chase 'memory corruption' bugs that aren't!
+ *
+ *              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 _UDP_H
+#define _UDP_H
+
+#include <linux/udp.h>
+#include <linux/ip.h>
+#include <linux/list.h>
+#include <net/sock.h>
+#include <net/snmp.h>
+#include <linux/seq_file.h>
+
+#define UDP_HTABLE_SIZE         128
+
+/* udp.c: This needs to be shared by v4 and v6 because the lookup
+ *        and hashing code needs to work with different AF's yet
+ *        the port space is shared.
+ */
+extern struct hlist_head udp_hash[UDP_HTABLE_SIZE];
+extern rwlock_t udp_hash_lock;
+
+extern int udp_port_rover;
+
+static inline int udp_lport_inuse(u16 num)
+{
+        struct sock *sk;
+        struct hlist_node *node;
+
+        sk_for_each(sk, node, &udp_hash[num & (UDP_HTABLE_SIZE - 1)])
+                if (inet_sk(sk)->num == num)
+                        return 1;
+        return 0;
+}
+
+/* Note: this must match 'valbool' in sock_setsockopt */
+#define UDP_CSUM_NOXMIT         1
+
+/* Used by SunRPC/xprt layer. */
+#define UDP_CSUM_NORCV          2
+
+/* Default, as per the RFC, is to always do csums. */
+#define UDP_CSUM_DEFAULT        0
+
+extern struct proto udp_prot;
+
+
+extern void     udp_err(struct sk_buff *, u32);
+
+extern int      udp_sendmsg(struct kiocb *iocb, struct sock *sk,
+                            struct msghdr *msg, size_t len);
+
+extern int      udp_rcv(struct sk_buff *skb);
+extern int      udp_ioctl(struct sock *sk, int cmd, unsigned long arg);
+extern int      udp_disconnect(struct sock *sk, int flags);
+extern unsigned int udp_poll(struct file *file, struct socket *sock,
+                             poll_table *wait);
+
+DECLARE_SNMP_STAT(struct udp_mib, udp_statistics);
+#define UDP_INC_STATS(field)            SNMP_INC_STATS(udp_statistics, field)
+#define UDP_INC_STATS_BH(field)         SNMP_INC_STATS_BH(udp_statistics, field)
+#define UDP_INC_STATS_USER(field)       SNMP_INC_STATS_USER(udp_statistics, field)
+
+/* /proc */
+struct udp_seq_afinfo {
+        struct module           *owner;
+        char                    *name;
+        sa_family_t             family;
+        int                     (*seq_show) (struct seq_file *m, void *v);
+        struct file_operations  *seq_fops;
+};
+
+struct udp_iter_state {
+        sa_family_t             family;
+        int                     bucket;
+        struct seq_operations   seq_ops;
+};
+
+extern int udp_proc_register(struct udp_seq_afinfo *afinfo);
+extern void udp_proc_unregister(struct udp_seq_afinfo *afinfo);
+#endif  /* _UDP_H */