diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/sch_generic.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 4372c08fc4d9..083e566fc380 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -322,6 +322,11 @@ struct tcf_proto { void *data; const struct tcf_proto_ops *ops; struct tcf_chain *chain; + /* Lock protects tcf_proto shared state and can be used by unlocked + * classifiers to protect their private data. + */ + spinlock_t lock; + bool deleting; refcount_t refcnt; struct rcu_head rcu; }; @@ -382,16 +387,29 @@ static inline bool lockdep_tcf_chain_is_locked(struct tcf_chain *chain) { return lockdep_is_held(&chain->filter_chain_lock); } + +static inline bool lockdep_tcf_proto_is_locked(struct tcf_proto *tp) +{ + return lockdep_is_held(&tp->lock); +} #else static inline bool lockdep_tcf_chain_is_locked(struct tcf_block *chain) { return true; } + +static inline bool lockdep_tcf_proto_is_locked(struct tcf_proto *tp) +{ + return true; +} #endif /* #ifdef CONFIG_PROVE_LOCKING */ #define tcf_chain_dereference(p, chain) \ rcu_dereference_protected(p, lockdep_tcf_chain_is_locked(chain)) +#define tcf_proto_dereference(p, tp) \ + rcu_dereference_protected(p, lockdep_tcf_proto_is_locked(tp)) + static inline void tcf_block_offload_inc(struct tcf_block *block, u32 *flags) { if (*flags & TCA_CLS_FLAGS_IN_HW) |