From: James Chapman <jchapman@katalix•com>
To: netdev@vger•kernel.org
Subject: [PATCH net-next-2.6 v4 08/14] netlink: Export genl_lock() API for use by modules
Date: Fri, 02 Apr 2010 17:19:05 +0100 [thread overview]
Message-ID: <20100402161905.11367.28514.stgit@bert.katalix.com> (raw)
In-Reply-To: <20100402161822.11367.70454.stgit@bert.katalix.com>
This lets kernel modules which use genl netlink APIs serialize netlink
processing.
Signed-off-by: James Chapman <jchapman@katalix•com>
Reviewed-by: Randy Dunlap <randy.dunlap@oracle•com>
---
include/linux/genetlink.h | 8 ++++++++
net/netlink/genetlink.c | 6 ++++--
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/include/linux/genetlink.h b/include/linux/genetlink.h
index b834ef6..61549b2 100644
--- a/include/linux/genetlink.h
+++ b/include/linux/genetlink.h
@@ -80,4 +80,12 @@ enum {
#define CTRL_ATTR_MCAST_GRP_MAX (__CTRL_ATTR_MCAST_GRP_MAX - 1)
+#ifdef __KERNEL__
+
+/* All generic netlink requests are serialized by a global lock. */
+extern void genl_lock(void);
+extern void genl_unlock(void);
+
+#endif /* __KERNEL__ */
+
#endif /* __LINUX_GENERIC_NETLINK_H */
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index a4b6e14..a28fda7 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -20,15 +20,17 @@
static DEFINE_MUTEX(genl_mutex); /* serialization of message processing */
-static inline void genl_lock(void)
+void genl_lock(void)
{
mutex_lock(&genl_mutex);
}
+EXPORT_SYMBOL(genl_lock);
-static inline void genl_unlock(void)
+void genl_unlock(void)
{
mutex_unlock(&genl_mutex);
}
+EXPORT_SYMBOL(genl_unlock);
#define GENL_FAM_TAB_SIZE 16
#define GENL_FAM_TAB_MASK (GENL_FAM_TAB_SIZE - 1)
next prev parent reply other threads:[~2010-04-02 16:18 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-02 16:18 [PATCH net-next-2.6 v4 00/14] l2tp: Introduce L2TPv3 support James Chapman
2010-04-02 16:18 ` [PATCH net-next-2.6 v4 01/14] l2tp: Relocate pppol2tp driver to new net/l2tp directory James Chapman
2010-04-02 16:18 ` [PATCH net-next-2.6 v4 02/14] l2tp: Split pppol2tp patch into separate l2tp and ppp parts James Chapman
2010-04-02 16:18 ` [PATCH net-next-2.6 v4 03/14] ppp: Add ppp_dev_name() exported function James Chapman
2010-04-02 16:18 ` [PATCH net-next-2.6 v4 04/14] l2tp: Add ppp device name to L2TP ppp session data James Chapman
2010-04-02 16:18 ` [PATCH net-next-2.6 v4 05/14] l2tp: Add L2TPv3 protocol support James Chapman
2010-04-02 16:18 ` [PATCH net-next-2.6 v4 06/14] l2tp: Update PPP-over-L2TP driver to work over L2TPv3 James Chapman
2010-04-02 16:19 ` [PATCH net-next-2.6 v4 07/14] l2tp: Add L2TPv3 IP encapsulation (no UDP) support James Chapman
2010-04-02 16:19 ` James Chapman [this message]
2010-04-02 16:19 ` [PATCH net-next-2.6 v4 09/14] l2tp: Add netlink control API for L2TP James Chapman
2010-04-02 16:19 ` [PATCH net-next-2.6 v4 10/14] l2tp: Convert rwlock to RCU James Chapman
2010-04-20 16:55 ` Eric Dumazet
2010-04-21 13:53 ` James Chapman
2010-04-02 16:19 ` [PATCH net-next-2.6 v4 11/14] l2tp: Add L2TP ethernet pseudowire support James Chapman
2010-04-02 16:19 ` [PATCH net-next-2.6 v4 12/14] l2tp: Add debugfs files for dumping l2tp debug info James Chapman
2010-04-02 16:19 ` [PATCH net-next-2.6 v4 13/14] l2tp: Add support for static unmanaged L2TPv3 tunnels James Chapman
2010-04-02 16:19 ` [PATCH net-next-2.6 v4 14/14] l2tp: Update documentation James Chapman
2010-04-03 21:25 ` [PATCH net-next-2.6 v4 00/14] l2tp: Introduce L2TPv3 support David Miller
2010-04-03 22:04 ` David Miller
2010-04-04 7:54 ` Eric Dumazet
2010-04-04 8:02 ` David Miller
2010-04-04 8:14 ` Eric Dumazet
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