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authorVitalii Demianets <vitas@nppfactor.kiev.ua>2011-11-25 00:16:37 +0000
committerDavid S. Miller <davem@davemloft.net>2011-12-01 14:05:17 -0500
commitb03b6dd58cef7d15b7c46a6729b83dd535ef08ab (patch)
treea193461397942346f330b782a200849feafa1991 /net/bridge/br_netlink.c
parentefbc368dcc6426d5430b9b8eeda944cf2cb74b8c (diff)
downloadlinux-linaro-stable-b03b6dd58cef7d15b7c46a6729b83dd535ef08ab.tar.gz
bridge: master device stuck in no-carrier state forever when in user-stp mode
When in user-stp mode, bridge master do not follow state of its slaves, so after the following sequence of events it can stuck forever in no-carrier state: 1) turn stp off 2) put all slaves down - master device will follow their state and also go in no-carrier state 3) turn stp on with bridge-stp script returning 0 (go to the user-stp mode) Now bridge master won't follow slaves' state and will never reach running state. This patch solves the problem by making user-stp and kernel-stp behavior similar regarding master following slaves' states. Signed-off-by: Vitalii Demianets <vitas@nppfactor.kiev.ua> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_netlink.c')
-rw-r--r--net/bridge/br_netlink.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index e5f9ece3c9a0..a1daf8227ed1 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -18,6 +18,7 @@
#include <net/sock.h>
#include "br_private.h"
+#include "br_private_stp.h"
static inline size_t br_nlmsg_size(void)
{
@@ -188,6 +189,11 @@ static int br_rtm_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
p->state = new_state;
br_log_state(p);
+
+ spin_lock_bh(&p->br->lock);
+ br_port_state_selection(p->br);
+ spin_unlock_bh(&p->br->lock);
+
br_ifinfo_notify(RTM_NEWLINK, p);
return 0;