diff options
Diffstat (limited to 'net/core/rtnetlink.c')
| -rw-r--r-- | net/core/rtnetlink.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 1c15a907066..ae10d3740fa 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -35,6 +35,7 @@ #include <linux/skbuff.h> #include <linux/init.h> #include <linux/security.h> +#include <linux/mutex.h> #include <asm/uaccess.h> #include <asm/system.h> @@ -51,25 +52,31 @@ #include <net/pkt_sched.h> #include <net/netlink.h> -DECLARE_MUTEX(rtnl_sem); +static DEFINE_MUTEX(rtnl_mutex); void rtnl_lock(void) { - rtnl_shlock(); + mutex_lock(&rtnl_mutex); } -int rtnl_lock_interruptible(void) +void __rtnl_unlock(void) { - return down_interruptible(&rtnl_sem); + mutex_unlock(&rtnl_mutex); } - + void rtnl_unlock(void) { - rtnl_shunlock(); - + mutex_unlock(&rtnl_mutex); + if (rtnl && rtnl->sk_receive_queue.qlen) + rtnl->sk_data_ready(rtnl, 0); netdev_run_todo(); } +int rtnl_trylock(void) +{ + return mutex_trylock(&rtnl_mutex); +} + int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len) { memset(tb, 0, sizeof(struct rtattr*)*maxattr); @@ -625,9 +632,9 @@ static void rtnetlink_rcv(struct sock *sk, int len) unsigned int qlen = 0; do { - rtnl_lock(); + mutex_lock(&rtnl_mutex); netlink_run_queue(sk, &qlen, &rtnetlink_rcv_msg); - up(&rtnl_sem); + mutex_unlock(&rtnl_mutex); netdev_run_todo(); } while (qlen); @@ -704,6 +711,5 @@ EXPORT_SYMBOL(rtnetlink_links); EXPORT_SYMBOL(rtnetlink_put_metrics); EXPORT_SYMBOL(rtnl); EXPORT_SYMBOL(rtnl_lock); -EXPORT_SYMBOL(rtnl_lock_interruptible); -EXPORT_SYMBOL(rtnl_sem); +EXPORT_SYMBOL(rtnl_trylock); EXPORT_SYMBOL(rtnl_unlock); |