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Message-ID: <20100517144731.GE2878@psychotron.lab.eng.brq.redhat.com>
Date: Mon, 17 May 2010 16:47:31 +0200
From: Jiri Pirko <jpirko@...hat.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, fubar@...ibm.com,
bonding-devel@...ts.sourceforge.net, monis@...taire.com
Subject: [PATCH net-next-2.6] bonding: move slave MTU handling from sysfs
For some reason, MTU handling (storing, and restoring) is taking place in
bond_sysfs. The correct place for this code is in bond_enslave, bond_release.
So move it there.
Jirka
Signed-off-by: Jiri Pirko <jpirko@...hat.com>
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 5e12462..2c3f9db 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1533,6 +1533,14 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
*/
new_slave->original_flags = slave_dev->flags;
+ /* Save slave's original mtu and then set it to match the bond */
+ new_slave->original_mtu = slave_dev->mtu;
+ res = dev_set_mtu(slave_dev, bond->dev->mtu);
+ if (res) {
+ pr_debug("Error %d calling dev_set_mtu\n", res);
+ goto err_free;
+ }
+
/*
* Save slave's original ("permanent") mac address for modes
* that need it, and for restoring it upon release, and then
@@ -1550,7 +1558,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
res = dev_set_mac_address(slave_dev, &addr);
if (res) {
pr_debug("Error %d calling set_mac_address\n", res);
- goto err_free;
+ goto err_restore_mtu;
}
}
@@ -1785,6 +1793,9 @@ err_restore_mac:
dev_set_mac_address(slave_dev, &addr);
}
+err_restore_mtu:
+ dev_set_mtu(slave_dev, new_slave->original_mtu);
+
err_free:
kfree(new_slave);
@@ -1969,6 +1980,8 @@ int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
dev_set_mac_address(slave_dev, &addr);
}
+ dev_set_mtu(slave_dev, slave->original_mtu);
+
slave_dev->priv_flags &= ~(IFF_MASTER_8023AD | IFF_MASTER_ALB |
IFF_SLAVE_INACTIVE | IFF_BONDING |
IFF_SLAVE_NEEDARP);
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 392e291..4e84cfc 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -220,7 +220,6 @@ static ssize_t bonding_store_slaves(struct device *d,
char command[IFNAMSIZ + 1] = { 0, };
char *ifname;
int i, res, ret = count;
- u32 original_mtu;
struct slave *slave;
struct net_device *dev = NULL;
struct bonding *bond = to_bond(d);
@@ -281,43 +280,22 @@ static ssize_t bonding_store_slaves(struct device *d,
memcpy(bond->dev->dev_addr, dev->dev_addr,
dev->addr_len);
- /* Set the slave's MTU to match the bond */
- original_mtu = dev->mtu;
- res = dev_set_mtu(dev, bond->dev->mtu);
- if (res) {
- ret = res;
- goto out;
- }
-
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;
- if (res)
- ret = res;
goto out;
}
if (command[0] == '-') {
dev = NULL;
- original_mtu = 0;
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) {
pr_info("%s: Removing slave %s\n",
bond->dev->name, dev->name);
- res = bond_release(bond->dev, dev);
- if (res) {
- ret = res;
- goto out;
- }
- /* set the slave MTU to the default */
- dev_set_mtu(dev, original_mtu);
+ res = bond_release(bond->dev, dev);
} else {
pr_err("unable to remove non-existent slave %s for bond %s.\n",
ifname, bond->dev->name);
--
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