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| author | Huw Davies <huw@codeweavers.com> | 2016-06-27 15:06:17 -0400 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2016-06-27 15:06:17 -0400 |
| commit | 4fee5242bf41d9ad641d4c1b821e36eb7ba37fbf (patch) | |
| tree | 6b79290fc0dbeffe30945235ca86576b652c84dd /include/net | |
| parent | 2e532b702834c07f614caf4489feb691e713232a (diff) | |
| download | linux-4fee5242bf41d9ad641d4c1b821e36eb7ba37fbf.tar.gz linux-4fee5242bf41d9ad641d4c1b821e36eb7ba37fbf.tar.bz2 linux-4fee5242bf41d9ad641d4c1b821e36eb7ba37fbf.zip | |
calipso: Add a label cache.
This works in exactly the same way as the CIPSO label cache.
The idea is to allow the lsm to cache the result of a secattr
lookup so that it doesn't need to perform the lookup for
every skbuff.
It introduces two sysctl controls:
calipso_cache_enable - enables/disables the cache.
calipso_cache_bucket_size - sets the size of a cache bucket.
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/calipso.h | 6 | ||||
| -rw-r--r-- | include/net/netlabel.h | 9 |
2 files changed, 13 insertions, 2 deletions
diff --git a/include/net/calipso.h b/include/net/calipso.h index 85404e2375d8..b1b30cd36601 100644 --- a/include/net/calipso.h +++ b/include/net/calipso.h @@ -62,6 +62,12 @@ struct calipso_doi { struct rcu_head rcu; }; +/* + * Sysctl Variables + */ +extern int calipso_cache_enabled; +extern int calipso_cache_bucketsize; + #ifdef CONFIG_NETLABEL int __init calipso_init(void); void calipso_exit(void); diff --git a/include/net/netlabel.h b/include/net/netlabel.h index d8a46a8ed512..a306bc7d2642 100644 --- a/include/net/netlabel.h +++ b/include/net/netlabel.h @@ -235,6 +235,8 @@ struct netlbl_lsm_secattr { * @skbuff_optptr: find option in packet * @skbuff_setattr: set the skbuff's attr * @skbuff_delattr: remove the skbuff's attr + * @cache_invalidate: invalidate cache + * @cache_add: add cache entry * * Description: * This structure is filled out by the CALIPSO engine and passed @@ -269,6 +271,9 @@ struct netlbl_calipso_ops { const struct calipso_doi *doi_def, const struct netlbl_lsm_secattr *secattr); int (*skbuff_delattr)(struct sk_buff *skb); + void (*cache_invalidate)(void); + int (*cache_add)(const unsigned char *calipso_ptr, + const struct netlbl_lsm_secattr *secattr); }; /* @@ -494,7 +499,7 @@ void netlbl_skbuff_err(struct sk_buff *skb, u16 family, int error, int gateway); * LSM label mapping cache operations */ void netlbl_cache_invalidate(void); -int netlbl_cache_add(const struct sk_buff *skb, +int netlbl_cache_add(const struct sk_buff *skb, u16 family, const struct netlbl_lsm_secattr *secattr); /* @@ -647,7 +652,7 @@ static inline void netlbl_cache_invalidate(void) { return; } -static inline int netlbl_cache_add(const struct sk_buff *skb, +static inline int netlbl_cache_add(const struct sk_buff *skb, u16 family, const struct netlbl_lsm_secattr *secattr) { return 0; |