diff options
Diffstat (limited to 'include/net/llc.h')
| -rw-r--r-- | include/net/llc.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/net/llc.h b/include/net/llc.h index 8b8e2be289b1..93e5b443a9a7 100644 --- a/include/net/llc.h +++ b/include/net/llc.h @@ -17,6 +17,8 @@ #include <linux/list.h> #include <linux/spinlock.h> +#include <asm/atomic.h> + struct net_device; struct packet_type; struct sk_buff; @@ -44,6 +46,7 @@ struct llc_sap { unsigned char state; unsigned char p_bit; unsigned char f_bit; + atomic_t refcnt; int (*rcv_func)(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, @@ -81,7 +84,18 @@ extern struct llc_sap *llc_sap_open(unsigned char lsap, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev)); -extern void llc_sap_close(struct llc_sap *sap); +static inline void llc_sap_hold(struct llc_sap *sap) +{ + atomic_inc(&sap->refcnt); +} + +static inline void llc_sap_put(struct llc_sap *sap) +{ + extern void llc_sap_close(struct llc_sap *sap); + + if (atomic_dec_and_test(&sap->refcnt)) + llc_sap_close(sap); +} extern struct llc_sap *llc_sap_find(unsigned char sap_value); |