Bug fixes
[cbs-scheduler.git] / include / net / protocol.h
blobffa5b8b1f1df7c1c92d3e679c3ffacde656faae4
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 struct sk_buff **(*gro_receive)(struct sk_buff **head,
43 struct sk_buff *skb);
44 int (*gro_complete)(struct sk_buff *skb);
45 unsigned int no_policy:1,
46 netns_ok:1;
49 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
50 struct inet6_protocol
52 int (*handler)(struct sk_buff *skb);
54 void (*err_handler)(struct sk_buff *skb,
55 struct inet6_skb_parm *opt,
56 int type, int code, int offset,
57 __be32 info);
59 int (*gso_send_check)(struct sk_buff *skb);
60 struct sk_buff *(*gso_segment)(struct sk_buff *skb,
61 int features);
62 struct sk_buff **(*gro_receive)(struct sk_buff **head,
63 struct sk_buff *skb);
64 int (*gro_complete)(struct sk_buff *skb);
66 unsigned int flags; /* INET6_PROTO_xxx */
69 #define INET6_PROTO_NOPOLICY 0x1
70 #define INET6_PROTO_FINAL 0x2
71 /* This should be set for any extension header which is compatible with GSO. */
72 #define INET6_PROTO_GSO_EXTHDR 0x4
73 #endif
75 /* This is used to register socket interfaces for IP protocols. */
76 struct inet_protosw {
77 struct list_head list;
79 /* These two fields form the lookup key. */
80 unsigned short type; /* This is the 2nd argument to socket(2). */
81 unsigned short protocol; /* This is the L4 protocol number. */
83 struct proto *prot;
84 const struct proto_ops *ops;
86 int capability; /* Which (if any) capability do
87 * we need to use this socket
88 * interface?
90 char no_check; /* checksum on rcv/xmit/none? */
91 unsigned char flags; /* See INET_PROTOSW_* below. */
93 #define INET_PROTOSW_REUSE 0x01 /* Are ports automatically reusable? */
94 #define INET_PROTOSW_PERMANENT 0x02 /* Permanent protocols are unremovable. */
95 #define INET_PROTOSW_ICSK 0x04 /* Is this an inet_connection_sock? */
97 extern struct net_protocol *inet_protocol_base;
98 extern struct net_protocol *inet_protos[MAX_INET_PROTOS];
100 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
101 extern struct inet6_protocol *inet6_protos[MAX_INET_PROTOS];
102 #endif
104 extern int inet_add_protocol(struct net_protocol *prot, unsigned char num);
105 extern int inet_del_protocol(struct net_protocol *prot, unsigned char num);
106 extern void inet_register_protosw(struct inet_protosw *p);
107 extern void inet_unregister_protosw(struct inet_protosw *p);
109 #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
110 extern int inet6_add_protocol(struct inet6_protocol *prot, unsigned char num);
111 extern int inet6_del_protocol(struct inet6_protocol *prot, unsigned char num);
112 extern int inet6_register_protosw(struct inet_protosw *p);
113 extern void inet6_unregister_protosw(struct inet_protosw *p);
114 #endif
116 #endif /* _PROTOCOL_H */