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authorXin Long <lucien.xin@gmail.com>2017-05-19 22:20:29 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-06-07 12:05:58 +0200
commit3a854210f9a555681eef4480ef2400922b31ca2b (patch)
treeddb5c8cb28128eea25c276af508266553c55f732 /net
parentb543ccc4f627cea5d9aee6009aca39f3e2d4822e (diff)
bridge: start hello_timer when enabling KERNEL_STP in br_stp_start
[ Upstream commit 6d18c732b95c0a9d35e9f978b4438bba15412284 ] Since commit 76b91c32dd86 ("bridge: stp: when using userspace stp stop kernel hello and hold timers"), bridge would not start hello_timer if stp_enabled is not KERNEL_STP when br_dev_open. The problem is even if users set stp_enabled with KERNEL_STP later, the timer will still not be started. It causes that KERNEL_STP can not really work. Users have to re-ifup the bridge to avoid this. This patch is to fix it by starting br->hello_timer when enabling KERNEL_STP in br_stp_start. As an improvement, it's also to start hello_timer again only when br->stp_enabled is KERNEL_STP in br_hello_timer_expired, there is no reason to start the timer again when it's NO_STP. Fixes: 76b91c32dd86 ("bridge: stp: when using userspace stp stop kernel hello and hold timers") Reported-by: Haidong Li <haili@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Reviewed-by: Ivan Vecera <cera@cera.cz> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
-rw-r--r--net/bridge/br_stp_if.c1
-rw-r--r--net/bridge/br_stp_timer.c2
2 files changed, 2 insertions, 1 deletions
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 8a7ada8bb947..57be733a99bc 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -166,6 +166,7 @@ static void br_stp_start(struct net_bridge *br)
br_debug(br, "using kernel STP\n");
/* To start timers on any ports left in blocking */
+ mod_timer(&br->hello_timer, jiffies + br->hello_time);
br_port_state_selection(br);
}
diff --git a/net/bridge/br_stp_timer.c b/net/bridge/br_stp_timer.c
index 5f0f5af0ec35..7dbe6a5c31eb 100644
--- a/net/bridge/br_stp_timer.c
+++ b/net/bridge/br_stp_timer.c
@@ -40,7 +40,7 @@ static void br_hello_timer_expired(unsigned long arg)
if (br->dev->flags & IFF_UP) {
br_config_bpdu_generation(br);
- if (br->stp_enabled != BR_USER_STP)
+ if (br->stp_enabled == BR_KERNEL_STP)
mod_timer(&br->hello_timer,
round_jiffies(jiffies + br->hello_time));
}