English
- /*
- * 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 protocol dispatcher.
- *
- * Version: @(#)protocol.h 1.0.2 05/07/93
- *
- * 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.
- *
- * Changes:
- * Alan Cox : Added a name field and a frag handler
- * field for later.
- * Alan Cox : Cleaned up, and sorted types.
- * Pedro Roque : inet6 protocols
- */
- #ifndef _PROTOCOL_H
- #define _PROTOCOL_H
- #include <linux/config.h>
- #include <linux/in6.h>
- #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
- #include <linux/ipv6.h>
- #endif
- #define MAX_INET_PROTOS 32 /* Must be a power of 2 */
- /* This is used to register protocols. */
- struct inet_protocol
- {
- int (*handler)(struct sk_buff *skb);
- void (*err_handler)(struct sk_buff *skb, u32 info);
- struct inet_protocol *next;
- unsigned char protocol;
- unsigned char copy:1;
- void *data;
- const char *name;
- };
- #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
- struct inet6_protocol
- {
- int (*handler)(struct sk_buff *skb);
- void (*err_handler)(struct sk_buff *skb,
- struct inet6_skb_parm *opt,
- int type, int code, int offset,
- __u32 info);
- struct inet6_protocol *next;
- unsigned char protocol;
- unsigned char copy:1;
- void *data;
- const char *name;
- };
- #endif
- /* This is used to register socket interfaces for IP protocols. */
- struct inet_protosw {
- struct list_head list;
- /* These two fields form the lookup key. */
- unsigned short type; /* This is the 2nd argument to socket(2). */
- int protocol; /* This is the L4 protocol number. */
- struct proto *prot;
- struct proto_ops *ops;
- int capability; /* Which (if any) capability do
- * we need to use this socket
- * interface?
- */
- char no_check; /* checksum on rcv/xmit/none? */
- unsigned char flags; /* See INET_PROTOSW_* below. */
- };
- #define INET_PROTOSW_REUSE 0x01 /* Are ports automatically reusable? */
- #define INET_PROTOSW_PERMANENT 0x02 /* Permanent protocols are unremovable. */
- extern struct inet_protocol *inet_protocol_base;
- extern struct inet_protocol *inet_protos[MAX_INET_PROTOS];
- extern struct list_head inetsw[SOCK_MAX];
- #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
- extern struct inet6_protocol *inet6_protos[MAX_INET_PROTOS];
- extern struct list_head inetsw6[SOCK_MAX];
- #endif
- extern void inet_add_protocol(struct inet_protocol *prot);
- extern int inet_del_protocol(struct inet_protocol *prot);
- extern void inet_register_protosw(struct inet_protosw *p);
- extern void inet_unregister_protosw(struct inet_protosw *p);
- #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
- extern void inet6_add_protocol(struct inet6_protocol *prot);
- extern int inet6_del_protocol(struct inet6_protocol *prot);
- extern void inet6_register_protosw(struct inet_protosw *p);
- extern void inet6_unregister_protosw(struct inet_protosw *p);
- #endif
- #endif /* _PROTOCOL_H */
