bridge: add support for user mode STP
This patchset based on work by Aji_Srinivas@emc.com provides allows
spanning tree to be controled from userspace. Like hotplug, it
uses call_usermodehelper when spanning tree is enabled so there
is no visible API change. If call to start usermode STP fails
it falls back to existing kernel STP.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 6cc5cfe..7ec0b76 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -149,7 +149,9 @@
static void set_stp_state(struct net_bridge *br, unsigned long val)
{
- br->stp_enabled = val;
+ spin_unlock_bh(&br->lock);
+ br_stp_set_enabled(br, val);
+ spin_lock_bh(&br->lock);
}
static ssize_t store_stp_state(struct device *d,