[patch net-next] team: send port changed when added

[patch net-next] team: send port changed when added

[Jiri Pirko]

On some hw, link is not up during adding iface to team. That causes event
not being sent to userspace and that may cause confusion.
Fix this bug by sending port changed event once it's added to team.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
---
 drivers/net/team/team.c | 33 +++++++++++++++++++++++++--------
 1 file changed, 25 insertions(+), 8 deletions(-)

diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index 266af7b..9ce0c51 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -966,7 +966,8 @@ static struct netpoll_info *team_netpoll_info(struct team *team)
 }
 #endif
 
-static void __team_port_change_check(struct team_port *port, bool linkup);
+static void __team_port_change_port_added(struct team_port *port, bool linkup);
+
 static int team_dev_type_check_change(struct net_device *dev,
 				      struct net_device *port_dev);
 
@@ -1079,7 +1080,7 @@ static int team_port_add(struct team *team, struct net_device *port_dev)
 	team_port_enable(team, port);
 	list_add_tail_rcu(&port->list, &team->port_list);
 	__team_compute_features(team);
-	__team_port_change_check(port, !!netif_carrier_ok(port_dev));
+	__team_port_change_port_added(port, !!netif_carrier_ok(port_dev));
 	__team_options_change_check(team);
 
 	netdev_info(dev, "Port device %s added\n", portname);
@@ -1114,6 +1115,8 @@ err_set_mtu:
 	return err;
 }
 
+static void __team_port_change_port_removed(struct team_port *port);
+
 static int team_port_del(struct team *team, struct net_device *port_dev)
 {
 	struct net_device *dev = team->dev;
@@ -1130,8 +1133,7 @@ static int team_port_del(struct team *team, struct net_device *port_dev)
 	__team_option_inst_mark_removed_port(team, port);
 	__team_options_change_check(team);
 	__team_option_inst_del_port(team, port);
-	port->removed = true;
-	__team_port_change_check(port, false);
+	__team_port_change_port_removed(port);
 	team_port_disable(team, port);
 	list_del_rcu(&port->list);
 	netdev_rx_handler_unregister(port_dev);
@@ -2499,13 +2501,11 @@ static void __team_options_change_check(struct team *team)
 }
 
 /* rtnl lock is held */
-static void __team_port_change_check(struct team_port *port, bool linkup)
+
+static void __team_port_change_send(struct team_port *port, bool linkup)
 {
 	int err;
 
-	if (!port->removed && port->state.linkup == linkup)
-		return;
-
 	port->changed = true;
 	port->state.linkup = linkup;
 	team_refresh_port_linkup(port);
@@ -2530,6 +2530,23 @@ send_event:
 
 }
 
+static void __team_port_change_check(struct team_port *port, bool linkup)
+{
+	if (port->state.linkup != linkup)
+		__team_port_change_send(port, linkup);
+}
+
+static void __team_port_change_port_added(struct team_port *port, bool linkup)
+{
+	__team_port_change_send(port, linkup);
+}
+
+static void __team_port_change_port_removed(struct team_port *port)
+{
+	port->removed = true;
+	__team_port_change_send(port, false);
+}
+
 static void team_port_change_check(struct team_port *port, bool linkup)
 {
 	struct team *team = port->team;
-- 
1.7.12

Re: [patch net-next] team: send port changed when added

[David Miller]

From: Jiri Pirko <jiri@resnulli.us>
Date: Fri, 21 Sep 2012 13:51:59 +0200

> On some hw, link is not up during adding iface to team. That causes event
> not being sent to userspace and that may cause confusion.
> Fix this bug by sending port changed event once it's added to team.
> 
> Signed-off-by: Jiri Pirko <jiri@resnulli.us>

Applied, thanks a lot Jiri.

Re: [patch net-next] team: send port changed when added

[Jiri Pirko]

Fri, Sep 21, 2012 at 09:01:42PM CEST, davem@davemloft.net wrote:
>From: Jiri Pirko <jiri@resnulli.us>
>Date: Fri, 21 Sep 2012 13:51:59 +0200
>
>> On some hw, link is not up during adding iface to team. That causes event
>> not being sent to userspace and that may cause confusion.
>> Fix this bug by sending port changed event once it's added to team.
>> 
>> Signed-off-by: Jiri Pirko <jiri@resnulli.us>
>
>Applied, thanks a lot Jiri.

David, I just realized this would be good to have fixed in net tree as
well. Unfortunately this patch does not apply cleanly. I will send you
backported patch for net tree in a jiffy.

Thanks!

Jiri