[PATCH] briq_panel: read() and write() get __user pointers, damnit
[linux-2.6/verdex.git] / include / net / protocol.h
blobc643bce64e552d0789facb53ebec5697e3ecd88b
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.
6 * Definitions for the protocol dispatcher.
8 * Version: @(#)protocol.h 1.0.2 05/07/93
10 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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.
17 * Changes:
18 * Alan Cox : Added a name field and a frag handler
19 * field for later.
20 * Alan Cox : Cleaned up, and sorted types.
21 * Pedro Roque : inet6 protocols
24 #ifndef _PROTOCOL_H
25 #define _PROTOCOL_H
27 #include <linux/in6.h>
28 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
29 #include <linux/ipv6.h>
30 #endif
32 #define MAX_INET_PROTOS 256 /* Must be a power of 2 */
35 /* This is used to register protocols. */
36 struct net_protocol {
37 int (*handler)(struct sk_buff *skb);
38 void (*err_handler)(struct sk_buff *skb, u32 info);
39 int (*gso_send_check)(struct sk_buff *skb);
40 struct sk_buff *(*gso_segment)(struct sk_buff *skb,
41 int features);
42 int no_policy;
45 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
46 struct inet6_protocol
48 int (*handler)(struct sk_buff **skb);
50 void (*err_handler)(struct sk_buff *skb,
51 struct inet6_skb_parm *opt,
52 int type, int code, int offset,
53 __u32 info);
55 int (*gso_send_check)(struct sk_buff *skb);
56 struct sk_buff *(*gso_segment)(struct sk_buff *skb,
57 int features);
59 unsigned int flags; /* INET6_PROTO_xxx */
62 #define INET6_PROTO_NOPOLICY 0x1
63 #define INET6_PROTO_FINAL 0x2
64 /* This should be set for any extension header which is compatible with GSO. */
65 #define INET6_PROTO_GSO_EXTHDR 0x4
66 #endif
68 /* This is used to register socket interfaces for IP protocols. */
69 struct inet_protosw {
70 struct list_head list;
72 /* These two fields form the lookup key. */
73 unsigned short type; /* This is the 2nd argument to socket(2). */
74 int protocol; /* This is the L4 protocol number. */
76 struct proto *prot;
77 const struct proto_ops *ops;
79 int capability; /* Which (if any) capability do
80 * we need to use this socket
81 * interface?
83 char no_check; /* checksum on rcv/xmit/none? */
84 unsigned char flags; /* See INET_PROTOSW_* below. */
86 #define INET_PROTOSW_REUSE 0x01 /* Are ports automatically reusable? */
87 #define INET_PROTOSW_PERMANENT 0x02 /* Permanent protocols are unremovable. */
88 #define INET_PROTOSW_ICSK 0x04 /* Is this an inet_connection_sock? */
90 extern struct net_protocol *inet_protocol_base;
91 extern struct net_protocol *inet_protos[MAX_INET_PROTOS];
93 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
94 extern struct inet6_protocol *inet6_protos[MAX_INET_PROTOS];
95 #endif
97 extern int inet_add_protocol(struct net_protocol *prot, unsigned char num);
98 extern int inet_del_protocol(struct net_protocol *prot, unsigned char num);
99 extern void inet_register_protosw(struct inet_protosw *p);
100 extern void inet_unregister_protosw(struct inet_protosw *p);
102 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
103 extern int inet6_add_protocol(struct inet6_protocol *prot, unsigned char num);
104 extern int inet6_del_protocol(struct inet6_protocol *prot, unsigned char num);
105 extern void inet6_register_protosw(struct inet_protosw *p);
106 extern void inet6_unregister_protosw(struct inet_protosw *p);
107 #endif
109 #endif /* _PROTOCOL_H */