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authorMoni Shoua <monis@voltaire.com>2007-10-09 19:43:41 -0700
committerJeff Garzik <jeff@garzik.org>2007-10-15 14:20:46 -0400
commit3158bf7d414b69fdc0c715d0a4d82e12b74ef974 (patch)
tree48fceb771712a8b93ae02269facd29de7d37f70c
parent6b1bf096508c870889c2be63c7757a04d72116fe (diff)
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>
-rw-r--r--drivers/net/bonding/bond_main.c3
-rw-r--r--drivers/net/bonding/bond_sysfs.c10
-rw-r--r--drivers/net/bonding/bonding.h1
3 files changed, 11 insertions, 3 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 3eebfe28753..7be23364a9d 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1225,7 +1225,8 @@ static int bond_compute_features(struct bonding *bond)
struct slave *slave;
struct net_device *bond_dev = bond->dev;
unsigned long features = bond_dev->features;
- unsigned short max_hard_header_len = ETH_HLEN;
+ unsigned short max_hard_header_len = max((u16)ETH_HLEN,
+ bond_dev->hard_header_len);
int i;
features &= ~(NETIF_F_ALL_CSUM | BOND_VLAN_FEATURES);
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index ca4e429f9ec..583c568e176 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -260,6 +260,7 @@ static ssize_t bonding_store_slaves(struct device *d,
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 @@ static ssize_t bonding_store_slaves(struct device *d,
}
/* 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 @@ static ssize_t bonding_store_slaves(struct device *d,
}
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 @@ static ssize_t bonding_store_slaves(struct device *d,
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 @@ static ssize_t bonding_store_slaves(struct device *d,
}
/* 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 {
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index 5011ba9e466..ad9c632f88e 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -156,6 +156,7 @@ struct slave {
s8 link; /* one of BOND_LINK_XXXX */
s8 state; /* one of BOND_STATE_XXXX */
u32 original_flags;
+ u32 original_mtu;
u32 link_failure_count;
u16 speed;
u8 duplex;