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| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
|---|---|
| 2 | /* |
| 3 | * CALIPSO - Common Architecture Label IPv6 Security Option |
| 4 | * |
| 5 | * This is an implementation of the CALIPSO protocol as specified in |
| 6 | * RFC 5570. |
| 7 | * |
| 8 | * Authors: Paul Moore <paul@paul-moore.com> |
| 9 | * Huw Davies <huw@codeweavers.com> |
| 10 | */ |
| 11 | |
| 12 | /* |
| 13 | * (c) Copyright Hewlett-Packard Development Company, L.P., 2006 |
| 14 | * (c) Copyright Huw Davies <huw@codeweavers.com>, 2015 |
| 15 | */ |
| 16 | |
| 17 | #ifndef _CALIPSO_H |
| 18 | #define _CALIPSO_H |
| 19 | |
| 20 | #include <linux/types.h> |
| 21 | #include <linux/rcupdate.h> |
| 22 | #include <linux/list.h> |
| 23 | #include <linux/net.h> |
| 24 | #include <linux/skbuff.h> |
| 25 | #include <net/netlabel.h> |
| 26 | #include <net/request_sock.h> |
| 27 | #include <linux/refcount.h> |
| 28 | #include <asm/unaligned.h> |
| 29 | |
| 30 | /* known doi values */ |
| 31 | #define CALIPSO_DOI_UNKNOWN 0x00000000 |
| 32 | |
| 33 | /* doi mapping types */ |
| 34 | #define CALIPSO_MAP_UNKNOWN 0 |
| 35 | #define CALIPSO_MAP_PASS 2 |
| 36 | |
| 37 | /* |
| 38 | * CALIPSO DOI definitions |
| 39 | */ |
| 40 | |
| 41 | /* DOI definition struct */ |
| 42 | struct calipso_doi { |
| 43 | u32 doi; |
| 44 | u32 type; |
| 45 | |
| 46 | refcount_t refcount; |
| 47 | struct list_head list; |
| 48 | struct rcu_head rcu; |
| 49 | }; |
| 50 | |
| 51 | /* |
| 52 | * Sysctl Variables |
| 53 | */ |
| 54 | extern int calipso_cache_enabled; |
| 55 | extern int calipso_cache_bucketsize; |
| 56 | |
| 57 | #ifdef CONFIG_NETLABEL |
| 58 | int __init calipso_init(void); |
| 59 | void calipso_exit(void); |
| 60 | bool calipso_validate(const struct sk_buff *skb, const unsigned char *option); |
| 61 | #else |
| 62 | static inline int __init calipso_init(void) |
| 63 | { |
| 64 | return 0; |
| 65 | } |
| 66 | |
| 67 | static inline void calipso_exit(void) |
| 68 | { |
| 69 | } |
| 70 | static inline bool calipso_validate(const struct sk_buff *skb, |
| 71 | const unsigned char *option) |
| 72 | { |
| 73 | return true; |
| 74 | } |
| 75 | #endif /* CONFIG_NETLABEL */ |
| 76 | |
| 77 | #endif /* _CALIPSO_H */ |
| 78 |
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