diff options
| author | Stephen Hemminger <shemminger@osdl.org> | 2006-03-20 22:23:58 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-03-20 22:23:58 -0800 |
| commit | 6756ae4b4e97aba48c042b4aa6b77a18f507d2cb (patch) | |
| tree | 05bf37711d782fb0089d474716026c44a454f89b /include/linux/rtnetlink.h | |
| parent | 253aa11578c1b89757282430891bb66ae5300092 (diff) | |
| download | op-kernel-dev-6756ae4b4e97aba48c042b4aa6b77a18f507d2cb.zip op-kernel-dev-6756ae4b4e97aba48c042b4aa6b77a18f507d2cb.tar.gz | |
[NET]: Convert RTNL to mutex.
This patch turns the RTNL from a semaphore to a new 2.6.16 mutex and
gets rid of some of the leftover legacy.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/rtnetlink.h')
| -rw-r--r-- | include/linux/rtnetlink.h | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h index edccefb..d263853 100644 --- a/include/linux/rtnetlink.h +++ b/include/linux/rtnetlink.h @@ -907,6 +907,7 @@ struct tcamsg #ifdef __KERNEL__ #include <linux/config.h> +#include <linux/mutex.h> extern size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size); static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str) @@ -1038,24 +1039,17 @@ __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen) extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change); -extern struct semaphore rtnl_sem; - -#define rtnl_shlock() down(&rtnl_sem) -#define rtnl_shlock_nowait() down_trylock(&rtnl_sem) - -#define rtnl_shunlock() do { up(&rtnl_sem); \ - if (rtnl && rtnl->sk_receive_queue.qlen) \ - rtnl->sk_data_ready(rtnl, 0); \ - } while(0) - +/* RTNL is used as a global lock for all changes to network configuration */ extern void rtnl_lock(void); -extern int rtnl_lock_interruptible(void); extern void rtnl_unlock(void); +extern int rtnl_trylock(void); + extern void rtnetlink_init(void); +extern void __rtnl_unlock(void); #define ASSERT_RTNL() do { \ - if (unlikely(down_trylock(&rtnl_sem) == 0)) { \ - up(&rtnl_sem); \ + if (unlikely(rtnl_trylock())) { \ + rtnl_unlock(); \ printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \ __FILE__, __LINE__); \ dump_stack(); \ |
