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net: remove MTU limits on a few ether_setup callers

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These few drivers call ether_setup(), but have no ndo_change_mtu, and thus
were overlooked for changes to MTU range checking behavior. They
previously had no range checks, so for feature-parity, set their min_mtu
to 0 and max_mtu to ETH_MAX_MTU (65535), instead of the 68 and 1500
inherited from the ether_setup() changes. Fine-tuning can come after we get
back to full feature-parity here.

CC: netdev@vger.kernel.org
Reported-by: Asbjoern Sloth Toennesen <asbjorn@asbjorn.st>
CC: Asbjoern Sloth Toennesen <asbjorn@asbjorn.st>
CC: R Parameswaran <parameswaran.r7@gmail.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jarod Wilson 2016-10-20 23:25:27 -04:00 committed by David S. Miller
parent e8f0a89cd7
commit 8b1efc0f83
5 changed files with 11 additions and 2 deletions
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4
net/atm/br2684.c
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@ -649,7 +649,9 @@ static void br2684_setup_routed(struct net_device *netdev)
netdev->hard_header_len = sizeof(llc_oui_ipv4); /* worst case */
netdev->netdev_ops = &br2684_netdev_ops_routed;
netdev->addr_len = 0;
netdev->mtu = 1500;
netdev->mtu = ETH_DATA_LEN;
netdev->min_mtu = 0;
netdev->max_mtu = ETH_MAX_MTU;
netdev->type = ARPHRD_PPP;
netdev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
netdev->tx_queue_len = 100;

2
net/bluetooth/bnep/netdev.c
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@ -221,6 +221,8 @@ void bnep_net_setup(struct net_device *dev)
dev->addr_len = ETH_ALEN;
ether_setup(dev);
dev->min_mtu = 0;
dev->max_mtu = ETH_MAX_MTU;
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
dev->netdev_ops = &bnep_netdev_ops;

2
net/dsa/slave.c
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@ -1247,6 +1247,8 @@ int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
slave_dev->priv_flags |= IFF_NO_QUEUE;
slave_dev->netdev_ops = &dsa_slave_netdev_ops;
slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
slave_dev->min_mtu = 0;
slave_dev->max_mtu = ETH_MAX_MTU;
SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,

3
net/irda/irlan/irlan_eth.c
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@ -66,7 +66,8 @@ static void irlan_eth_setup(struct net_device *dev)
dev->netdev_ops = &irlan_eth_netdev_ops;
dev->destructor = free_netdev;
dev->min_mtu = 0;
dev->max_mtu = ETH_MAX_MTU;
/*
* Lets do all queueing in IrTTP instead of this device driver.

2
net/l2tp/l2tp_eth.c
View File

@ -259,6 +259,8 @@ static int l2tp_eth_create(struct net *net, u32 tunnel_id, u32 session_id, u32 p
session->mtu = dev->mtu - session->hdr_len;
dev->mtu = session->mtu;
dev->needed_headroom += session->hdr_len;
dev->min_mtu = 0;
dev->max_mtu = ETH_MAX_MTU;
priv = netdev_priv(dev);
priv->dev = dev;