projects / deliverable / 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, <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 | ||
| 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); | |
| 73cc19f1 HX |
42 | struct sk_buff **(*gro_receive)(struct sk_buff **head, |
| 43 | struct sk_buff *skb); | |
| 44 | int (*gro_complete)(struct sk_buff *skb); | |
| f145049a DL |
45 | unsigned int no_policy:1, |
| 46 | netns_ok:1; | |
| 1da177e4 LT |
47 | }; |
| 48 | ||
| 49 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) | |
| 50 | struct inet6_protocol | |
| 51 | { | |
| e5bbef20 | 52 | int (*handler)(struct sk_buff *skb); |
| 1da177e4 LT |
53 | |
| 54 | void (*err_handler)(struct sk_buff *skb, | |
| 55 | struct inet6_skb_parm *opt, | |
| 56 | int type, int code, int offset, | |
| 04ce6909 | 57 | __be32 info); |
| adcfc7d0 | 58 | |
| a430a43d | 59 | int (*gso_send_check)(struct sk_buff *skb); |
| adcfc7d0 HX |
60 | struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
| 61 | int features); | |
| 62 | ||
| 1da177e4 LT |
63 | unsigned int flags; /* INET6_PROTO_xxx */ |
| 64 | }; | |
| 65 | ||
| 66 | #define INET6_PROTO_NOPOLICY 0x1 | |
| 67 | #define INET6_PROTO_FINAL 0x2 | |
| adcfc7d0 HX |
68 | /* This should be set for any extension header which is compatible with GSO. */ |
| 69 | #define INET6_PROTO_GSO_EXTHDR 0x4 | |
| 1da177e4 LT |
70 | #endif |
| 71 | ||
| 72 | /* This is used to register socket interfaces for IP protocols. */ | |
| 73 | struct inet_protosw { | |
| 74 | struct list_head list; | |
| 75 | ||
| 76 | /* These two fields form the lookup key. */ | |
| 77 | unsigned short type; /* This is the 2nd argument to socket(2). */ | |
| ee41e2df | 78 | unsigned short protocol; /* This is the L4 protocol number. */ |
| 1da177e4 LT |
79 | |
| 80 | struct proto *prot; | |
| 90ddc4f0 | 81 | const struct proto_ops *ops; |
| 1da177e4 LT |
82 | |
| 83 | int capability; /* Which (if any) capability do | |
| 84 | * we need to use this socket | |
| 85 | * interface? | |
| 86 | */ | |
| 87 | char no_check; /* checksum on rcv/xmit/none? */ | |
| 88 | unsigned char flags; /* See INET_PROTOSW_* below. */ | |
| 89 | }; | |
| 90 | #define INET_PROTOSW_REUSE 0x01 /* Are ports automatically reusable? */ | |
| 91 | #define INET_PROTOSW_PERMANENT 0x02 /* Permanent protocols are unremovable. */ | |
| d83d8461 | 92 | #define INET_PROTOSW_ICSK 0x04 /* Is this an inet_connection_sock? */ |
| 1da177e4 LT |
93 | |
| 94 | extern struct net_protocol *inet_protocol_base; | |
| 95 | extern struct net_protocol *inet_protos[MAX_INET_PROTOS]; | |
| 96 | ||
| 97 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) | |
| 98 | extern struct inet6_protocol *inet6_protos[MAX_INET_PROTOS]; | |
| 99 | #endif | |
| 100 | ||
| 101 | extern int inet_add_protocol(struct net_protocol *prot, unsigned char num); | |
| 102 | extern int inet_del_protocol(struct net_protocol *prot, unsigned char num); | |
| 103 | extern void inet_register_protosw(struct inet_protosw *p); | |
| 104 | extern void inet_unregister_protosw(struct inet_protosw *p); | |
| 105 | ||
| 106 | #if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) | |
| 107 | extern int inet6_add_protocol(struct inet6_protocol *prot, unsigned char num); | |
| 108 | extern int inet6_del_protocol(struct inet6_protocol *prot, unsigned char num); | |
| 87c3efbf | 109 | extern int inet6_register_protosw(struct inet_protosw *p); |
| 1da177e4 LT |
110 | extern void inet6_unregister_protosw(struct inet_protosw *p); |
| 111 | #endif | |
| 112 | ||
| 113 | #endif /* _PROTOCOL_H */ |