diff options
| -rw-r--r-- | net/dsa/master.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/net/dsa/master.c b/net/dsa/master.c index 42f525bc68e2..a25242e71fb2 100644 --- a/net/dsa/master.c +++ b/net/dsa/master.c @@ -172,6 +172,18 @@ void dsa_master_set_mtu(struct net_device *dev, struct dsa_port *cpu_dp) rtnl_unlock(); } +static void dsa_master_reset_mtu(struct net_device *dev) +{ + int err; + + rtnl_lock(); + err = dev_set_mtu(dev, ETH_DATA_LEN); + if (err) + netdev_dbg(dev, + "Unable to reset MTU to exclude DSA overheads\n"); + rtnl_unlock(); +} + int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp) { dsa_master_set_mtu(dev, cpu_dp); @@ -190,6 +202,7 @@ int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp) void dsa_master_teardown(struct net_device *dev) { dsa_master_ethtool_teardown(dev); + dsa_master_reset_mtu(dev); dev->dsa_ptr = NULL; |