projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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, <[email protected]> | |
| 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 | ||
| 1da177e4 LT |
27 | #include <linux/in6.h> |
| 28 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) | |
| 29 | #include <linux/ipv6.h> | |
| 30 | #endif | |
| 31 | ||
| 32 | #define MAX_INET_PROTOS 256 /* Must be a power of 2 */ | |
| 33 | ||
| 34 | ||
| 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); | |
| a430a43d | 39 | int (*gso_send_check)(struct sk_buff *skb); |
| 576a30eb HX |
40 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
| 41 | int features); | |
| 1da177e4 LT |
42 | int no_policy; |
| 43 | }; | |
| 44 | ||
| 45 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) | |
| 46 | struct inet6_protocol | |
| 47 | { | |
| 951dbc8a | 48 | int (*handler)(struct sk_buff **skb); |
| 1da177e4 LT |
49 | |
| 50 | void (*err_handler)(struct sk_buff *skb, | |
| 51 | struct inet6_skb_parm *opt, | |
| 52 | int type, int code, int offset, | |
| 53 | __u32 info); | |
| adcfc7d0 | 54 | |
| a430a43d | 55 | int (*gso_send_check)(struct sk_buff *skb); |
| adcfc7d0 HX |
56 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
| 57 | int features); | |
| 58 | ||
| 1da177e4 LT |
59 | unsigned int flags; /* INET6_PROTO_xxx */ |
| 60 | }; | |
| 61 | ||
| 62 | #define INET6_PROTO_NOPOLICY 0x1 | |
| 63 | #define INET6_PROTO_FINAL 0x2 | |
| adcfc7d0 HX |
64 | /* This should be set for any extension header which is compatible with GSO. */ |
| 65 | #define INET6_PROTO_GSO_EXTHDR 0x4 | |
| 1da177e4 LT |
66 | #endif |
| 67 | ||
| 68 | /* This is used to register socket interfaces for IP protocols. */ | |
| 69 | struct inet_protosw { | |
| 70 | struct list_head list; | |
| 71 | ||
| 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. */ | |
| 75 | ||
| 76 | struct proto *prot; | |
| 90ddc4f0 | 77 | const struct proto_ops *ops; |
| 1da177e4 LT |
78 | |
| 79 | int capability; /* Which (if any) capability do | |
| 80 | * we need to use this socket | |
| 81 | * interface? | |
| 82 | */ | |
| 83 | char no_check; /* checksum on rcv/xmit/none? */ | |
| 84 | unsigned char flags; /* See INET_PROTOSW_* below. */ | |
| 85 | }; | |
| 86 | #define INET_PROTOSW_REUSE 0x01 /* Are ports automatically reusable? */ | |
| 87 | #define INET_PROTOSW_PERMANENT 0x02 /* Permanent protocols are unremovable. */ | |
| d83d8461 | 88 | #define INET_PROTOSW_ICSK 0x04 /* Is this an inet_connection_sock? */ |
| 1da177e4 LT |
89 | |
| 90 | extern struct net_protocol *inet_protocol_base; | |
| 91 | extern struct net_protocol *inet_protos[MAX_INET_PROTOS]; | |
| 92 | ||
| 93 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) | |
| 94 | extern struct inet6_protocol *inet6_protos[MAX_INET_PROTOS]; | |
| 95 | #endif | |
| 96 | ||
| 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); | |
| 101 | ||
| 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 | |
| 108 | ||
| 109 | #endif /* _PROTOCOL_H */ |