diff options
| -rw-r--r-- | datapath/linux/compat/geneve.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/datapath/linux/compat/geneve.c b/datapath/linux/compat/geneve.c index 297593ce6..29a65a0a4 100644 --- a/datapath/linux/compat/geneve.c +++ b/datapath/linux/compat/geneve.c @@ -742,6 +742,17 @@ static netdev_tx_t geneve_dev_xmit(struct sk_buff *skb, struct net_device *dev) return NETDEV_TX_OK; } +static int geneve_change_mtu(struct net_device *dev, int new_mtu) +{ + /* GENEVE overhead is not fixed, so we can't enforce a more + * precise max MTU. + */ + if (new_mtu < 68 || new_mtu > IP_MAX_MTU) + return -EINVAL; + dev->mtu = new_mtu; + return 0; +} + static const struct net_device_ops geneve_netdev_ops = { #ifdef HAVE_DEV_TSTATS .ndo_init = geneve_init, @@ -751,7 +762,7 @@ static const struct net_device_ops geneve_netdev_ops = { .ndo_open = geneve_open, .ndo_stop = geneve_stop, .ndo_start_xmit = geneve_dev_xmit, - .ndo_change_mtu = eth_change_mtu, + .ndo_change_mtu = geneve_change_mtu, .ndo_validate_addr = eth_validate_addr, .ndo_set_mac_address = eth_mac_addr, }; |