/* * 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 * 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/list.h> #include <net/inet_sock.h> #include <net/sock.h> #include <net/snmp.h> #include <linux/seq_file.h> #define UDP_HTABLE_SIZE 128 extern struct hlist_head udp_hash[UDP_HTABLE_SIZE]; extern rwlock_t udp_hash_lock; /* 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; struct sk_buff; extern int udp_get_port(struct sock *sk, unsigned short snum, int (*saddr_cmp)(const struct sock *, const struct sock *)); 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; }; #ifdef CONFIG_PROC_FS extern int udp_proc_register(struct udp_seq_afinfo *afinfo); extern void udp_proc_unregister(struct udp_seq_afinfo *afinfo); extern int udp4_proc_init(void); extern void udp4_proc_exit(void); #endif #endif /* _UDP_H */