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net: dsa: print the MTU value that could not be set 

These warnings become somewhat more informative when they include the
MTU value that could not be set and not just the errno.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Link: https://lore.kernel.org/r/20201205133944.10182-1-rasmus.villemoes@prevas.dk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Rasmus Villemoes 2020-12-05 14:39:44 +01:00 committed by Jakub Kicinski
parent 8e98387b16
commit bdc40a3f4b
2 changed files with 6 additions and 5 deletions
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7
net/dsa/master.c
View File

@ -308,14 +308,15 @@ static struct lock_class_key dsa_master_addr_list_lock_key;
int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp)
{
int mtu = ETH_DATA_LEN + cpu_dp->tag_ops->overhead;
int ret;
rtnl_lock();
ret = dev_set_mtu(dev, ETH_DATA_LEN + cpu_dp->tag_ops->overhead);
ret = dev_set_mtu(dev, mtu);
rtnl_unlock();
if (ret)
netdev_warn(dev, "error %d setting MTU to include DSA overhead\n",
ret);
netdev_warn(dev, "error %d setting MTU to %d to include DSA overhead\n",
ret, mtu);
/* If we use a tagging format that doesn't have an ethertype
* field, make sure that all packets from this point on get

4
net/dsa/slave.c
View File

@ -1850,8 +1850,8 @@ int dsa_slave_create(struct dsa_port *port)
ret = dsa_slave_change_mtu(slave_dev, ETH_DATA_LEN);
rtnl_unlock();
if (ret && ret != -EOPNOTSUPP)
dev_warn(ds->dev, "nonfatal error %d setting MTU on port %d\n",
ret, port->index);
dev_warn(ds->dev, "nonfatal error %d setting MTU to %d on port %d\n",
ret, ETH_DATA_LEN, port->index);
netif_carrier_off(slave_dev);