net/bonding: Handlle wrong assumptions that slave is always an Ethernet device
bonding sometimes uses Ethernet constants (such as MTU and address length) which
are not good when it enslaves non Ethernet devices (such as InfiniBand).
Signed-off-by: Moni Shoua <monis at voltaire.com>
Acked-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index ca4e429..583c568 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -260,6 +260,7 @@
char command[IFNAMSIZ + 1] = { 0, };
char *ifname;
int i, res, found, ret = count;
+ u32 original_mtu;
struct slave *slave;
struct net_device *dev = NULL;
struct bonding *bond = to_bond(d);
@@ -325,6 +326,7 @@
}
/* Set the slave's MTU to match the bond */
+ original_mtu = dev->mtu;
if (dev->mtu != bond->dev->mtu) {
if (dev->change_mtu) {
res = dev->change_mtu(dev,
@@ -339,6 +341,9 @@
}
rtnl_lock();
res = bond_enslave(bond->dev, dev);
+ bond_for_each_slave(bond, slave, i)
+ if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0)
+ slave->original_mtu = original_mtu;
rtnl_unlock();
if (res) {
ret = res;
@@ -351,6 +356,7 @@
bond_for_each_slave(bond, slave, i)
if (strnicmp(slave->dev->name, ifname, IFNAMSIZ) == 0) {
dev = slave->dev;
+ original_mtu = slave->original_mtu;
break;
}
if (dev) {
@@ -365,9 +371,9 @@
}
/* set the slave MTU to the default */
if (dev->change_mtu) {
- dev->change_mtu(dev, 1500);
+ dev->change_mtu(dev, original_mtu);
} else {
- dev->mtu = 1500;
+ dev->mtu = original_mtu;
}
}
else {