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authorStephen Hemminger <shemminger@osdl.org>2006-03-20 22:23:58 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-20 22:23:58 -0800
commit6756ae4b4e97aba48c042b4aa6b77a18f507d2cb (patch)
tree05bf37711d782fb0089d474716026c44a454f89b /include/linux
parent253aa11578c1b89757282430891bb66ae5300092 (diff)
[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')
-rw-r--r--include/linux/rtnetlink.h20
1 files changed, 7 insertions, 13 deletions
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index edccefb4518..d263853a8f1 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(); \