bonding: Fix updating of speed/duplex changes

[ Upstream commit 17d04500e2528217de5fe967599f98ee84348a9c ]

	This patch corrects an omission from the following commit:

commit f0c76d61779b153dbfb955db3f144c62d02173c2
Author: Jay Vosburgh <fubar@us.ibm.com>
Date:   Wed Jul 2 18:21:58 2008 -0700

    bonding: refactor mii monitor

	The un-refactored code checked the link speed and duplex of
every slave on every pass; the refactored code did not do so.

	The 802.3ad and balance-alb/tlb modes utilize the speed and
duplex information, and require it to be kept up to date.  This patch
adds a notifier check to perform the appropriate updating when the slave
device speed changes.

Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index a3efba59eee98daa96aeae7dd1278865a31c6db6..f0c66826326a707632ab28ccee93a7ff396bde98 100644 (file)
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3536,11 +3536,26 @@ static int bond_slave_netdev_event(unsigned long event, struct net_device *slave
                }
                break;
        case NETDEV_CHANGE:
-               /*
-                * TODO: is this what we get if somebody
-                * sets up a hierarchical bond, then rmmod's
-                * one of the slave bonding devices?
-                */
+               if (bond->params.mode == BOND_MODE_8023AD || bond_is_lb(bond)) {
+                       struct slave *slave;
+
+                       slave = bond_get_slave_by_dev(bond, slave_dev);
+                       if (slave) {
+                               u16 old_speed = slave->speed;
+                               u16 old_duplex = slave->duplex;
+
+                               bond_update_speed_duplex(slave);
+
+                               if (bond_is_lb(bond))
+                                       break;
+
+                               if (old_speed != slave->speed)
+                                       bond_3ad_adapter_speed_changed(slave);
+                               if (old_duplex != slave->duplex)
+                                       bond_3ad_adapter_duplex_changed(slave);
+                       }
+               }
+
                break;
        case NETDEV_DOWN:
                /*

diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index ffb668dd6d3b00eddbc328513b785e42c31d492d..61bee8ef7f4acc7760b31c29512a99bacf80b1da 100644 (file)
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -248,6 +248,12 @@ static inline struct bonding *bond_get_bond_by_slave(struct slave *slave)
        return (struct bonding *)slave->dev->master->priv;
 }
 
+static inline bool bond_is_lb(const struct bonding *bond)
+{
+        return bond->params.mode == BOND_MODE_TLB
+                || bond->params.mode == BOND_MODE_ALB;
+}
+
 #define BOND_FOM_NONE                  0
 #define BOND_FOM_ACTIVE                        1
 #define BOND_FOM_FOLLOW                        2