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| author |   Patrick McHardy <kaber@trash.net> | 2014-02-18 18:06:48 +0000 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2014-02-25 11:29:21 +0100 |
| commit | 0eb5db7ad302a24fe6f0eb4bfd235357047a28db (patch) | |
| tree | 70ab0a2618925c66700ed7f7e47fe70793c550b4 /net/netfilter/nfnetlink.c | |
| parent | netfilter: ip_set: rename nfnl_dereference()/nfnl_set() (diff) | |
| download | linux-dev-0eb5db7ad302a24fe6f0eb4bfd235357047a28db.tar.xz linux-dev-0eb5db7ad302a24fe6f0eb4bfd235357047a28db.zip | |
netfilter: nfnetlink: add rcu_dereference_protected() helpers
Add a lockdep_nfnl_is_held() function and a nfnl_dereference() macro for
RCU dereferences protected by a NFNL subsystem mutex.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nfnetlink.c')
| -rw-r--r-- | net/netfilter/nfnetlink.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index 046aa13b4fea..e8138da4c14f 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -61,6 +61,14 @@ void nfnl_unlock(__u8 subsys_id) } EXPORT_SYMBOL_GPL(nfnl_unlock); +#ifdef CONFIG_PROVE_LOCKING +int lockdep_nfnl_is_held(u8 subsys_id) +{ + return lockdep_is_held(&table[subsys_id].mutex); +} +EXPORT_SYMBOL_GPL(lockdep_nfnl_is_held); +#endif + int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n) { nfnl_lock(n->subsys_id); |