diff options
Diffstat (limited to 'include/net/protocol.h')
-rw-r--r-- | include/net/protocol.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/include/net/protocol.h b/include/net/protocol.h new file mode 100644 index 000000000000..357691f6a45f --- /dev/null +++ b/include/net/protocol.h | |||
@@ -0,0 +1,99 @@ | |||
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, <waltje@uWalt.NL.Mugnet.ORG> | ||
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 | * Alan Cox : Cleaned up, and sorted types. | ||
21 | * Pedro Roque : inet6 protocols | ||
22 | */ | ||
23 | |||
24 | #ifndef _PROTOCOL_H | ||
25 | #define _PROTOCOL_H | ||
26 | |||
27 | #include <linux/config.h> | ||
28 | #include <linux/in6.h> | ||
29 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) | ||
30 | #include <linux/ipv6.h> | ||
31 | #endif | ||
32 | |||
33 | #define MAX_INET_PROTOS 256 /* Must be a power of 2 */ | ||
34 | |||
35 | |||
36 | /* This is used to register protocols. */ | ||
37 | struct net_protocol { | ||
38 | int (*handler)(struct sk_buff *skb); | ||
39 | void (*err_handler)(struct sk_buff *skb, u32 info); | ||
40 | int no_policy; | ||
41 | }; | ||
42 | |||
43 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) | ||
44 | struct inet6_protocol | ||
45 | { | ||
46 | int (*handler)(struct sk_buff **skb, unsigned int *nhoffp); | ||
47 | |||
48 | void (*err_handler)(struct sk_buff *skb, | ||
49 | struct inet6_skb_parm *opt, | ||
50 | int type, int code, int offset, | ||
51 | __u32 info); | ||
52 | unsigned int flags; /* INET6_PROTO_xxx */ | ||
53 | }; | ||
54 | |||
55 | #define INET6_PROTO_NOPOLICY 0x1 | ||
56 | #define INET6_PROTO_FINAL 0x2 | ||
57 | #endif | ||
58 | |||
59 | /* This is used to register socket interfaces for IP protocols. */ | ||
60 | struct inet_protosw { | ||
61 | struct list_head list; | ||
62 | |||
63 | /* These two fields form the lookup key. */ | ||
64 | unsigned short type; /* This is the 2nd argument to socket(2). */ | ||
65 | int protocol; /* This is the L4 protocol number. */ | ||
66 | |||
67 | struct proto *prot; | ||
68 | struct proto_ops *ops; | ||
69 | |||
70 | int capability; /* Which (if any) capability do | ||
71 | * we need to use this socket | ||
72 | * interface? | ||
73 | */ | ||
74 | char no_check; /* checksum on rcv/xmit/none? */ | ||
75 | unsigned char flags; /* See INET_PROTOSW_* below. */ | ||
76 | }; | ||
77 | #define INET_PROTOSW_REUSE 0x01 /* Are ports automatically reusable? */ | ||
78 | #define INET_PROTOSW_PERMANENT 0x02 /* Permanent protocols are unremovable. */ | ||
79 | |||
80 | extern struct net_protocol *inet_protocol_base; | ||
81 | extern struct net_protocol *inet_protos[MAX_INET_PROTOS]; | ||
82 | |||
83 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) | ||
84 | extern struct inet6_protocol *inet6_protos[MAX_INET_PROTOS]; | ||
85 | #endif | ||
86 | |||
87 | extern int inet_add_protocol(struct net_protocol *prot, unsigned char num); | ||
88 | extern int inet_del_protocol(struct net_protocol *prot, unsigned char num); | ||
89 | extern void inet_register_protosw(struct inet_protosw *p); | ||
90 | extern void inet_unregister_protosw(struct inet_protosw *p); | ||
91 | |||
92 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) | ||
93 | extern int inet6_add_protocol(struct inet6_protocol *prot, unsigned char num); | ||
94 | extern int inet6_del_protocol(struct inet6_protocol *prot, unsigned char num); | ||
95 | extern void inet6_register_protosw(struct inet_protosw *p); | ||
96 | extern void inet6_unregister_protosw(struct inet_protosw *p); | ||
97 | #endif | ||
98 | |||
99 | #endif /* _PROTOCOL_H */ | ||