protocol.h

An implementation of the TCP/IP protocol suite for the LINUX operating system. INET is implemented u

  1 /*
  2  * INET         An implementation of the TCP/IP protocol suite for the LINUX
  3  *              operating system.  INET is implemented using the  BSD Socket
  4  *              interface as the means of communication with the user level.
  5  *
  6  *              Definitions for the protocol dispatcher.
  7  *
  8  * Version:     @(#)protocol.h  1.0.2   05/07/93
  9  *
 10  * Author:      Fred N. van Kempen, <[e-mail]>
 11  *
 12  *              This program is free software; you can redistribute it and/or
 13  *              modify it under the terms of the GNU General Public License
 14  *              as published by the Free Software Foundation; either version
 15  *              2 of the License, or (at your option) any later version.
 16  *
 17  *      Changes:
 18  *              Alan Cox        :       Added a name field and a frag handler
 19  *                                      field for later.
 20  */
 21  
 22 #ifndef _PROTOCOL_H
 23 #define _PROTOCOL_H
 24 
 25 
 26 #define MAX_INET_PROTOS 32              /* Must be a power of 2         */
 27 
 28 
 29 /* This is used to register protocols. */
 30 struct inet_protocol {
 31   int                   (*handler)(struct sk_buff *skb, struct device *dev,
 32                                    struct options *opt, unsigned long daddr,
 33                                    unsigned short len, unsigned long saddr,
 34                                    int redo, struct inet_protocol *protocol);
 35   int                   (*frag_handler)(struct sk_buff *skb, struct device *dev,
 36                                    struct options *opt, unsigned long daddr,
 37                                    unsigned short len, unsigned long saddr,
 38                                    int redo, struct inet_protocol *protocol);
 39   void                  (*err_handler)(int err, unsigned char *buff,
 40                                        unsigned long daddr,
 41                                        unsigned long saddr,
 42                                        struct inet_protocol *protocol);
 43   struct inet_protocol *next;
 44   unsigned char         protocol;
 45   unsigned char         copy:1;
 46   void                  *data;
 47   char                  *name;
 48 };
 49 
 50 
 51 extern struct inet_protocol *inet_protocol_base;
 52 extern struct inet_protocol *inet_protos[MAX_INET_PROTOS];
 53 
 54 
 55 extern void             inet_add_protocol(struct inet_protocol *prot);
 56 extern int              inet_del_protocol(struct inet_protocol *prot);
 57 
 58 
 59 #endif  /* _PROTOCOL_H */
 60