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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 /net/core/rtnetlink.c
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 'net/core/rtnetlink.c')
-rw-r--r--net/core/rtnetlink.c28
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);