diff options
Diffstat (limited to 'net/dsa/master.c')
| -rw-r--r-- | net/dsa/master.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/net/dsa/master.c b/net/dsa/master.c index c91de041a91d..cb3a5cf99b25 100644 --- a/net/dsa/master.c +++ b/net/dsa/master.c @@ -308,14 +308,25 @@ 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; + struct dsa_switch *ds = cpu_dp->ds; + struct device_link *consumer_link; int ret; + /* The DSA master must use SET_NETDEV_DEV for this to work. */ + consumer_link = device_link_add(ds->dev, dev->dev.parent, + DL_FLAG_AUTOREMOVE_CONSUMER); + if (!consumer_link) + netdev_err(dev, + "Failed to create a device link to DSA switch %s\n", + dev_name(ds->dev)); + 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 |