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authorZhang Shengju <zhangshengju@cmss.chinamobile.com>2017-09-22 17:57:49 +0200
committerDavid S. Miller <davem@davemloft.net>2017-09-26 01:26:09 +0200
commite94cd8113ce63bca34040aae52d0603baf6ec07c (patch)
tree983dee3efd8758ef006e6d60fdc654d17d1bc7f8 /drivers/net/ifb.c
parenthv_netvsc: make const array ver_list static, reduces object code size (diff)
downloadlinux-e94cd8113ce63bca34040aae52d0603baf6ec07c.tar.xz
linux-e94cd8113ce63bca34040aae52d0603baf6ec07c.zip
net: remove MTU limits for dummy and ifb device
These two drivers (dummy and ifb) call ether_setup(), after commit 61e84623ace3 ("net: centralize net_device min/max MTU checking"), the range of mtu is [min_mtu, max_mtu], which is [68, 1500] by default. These two devices should not have limits on MTU. This patch set their min_mtu/max_mtu to 0. So that dev_set_mtu() will not check the mtu range, and can be set with any value. CC: Eric Dumazet <edumazet@google.com> CC: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ifb.c')
-rw-r--r--drivers/net/ifb.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index 8870bd2a2e8a..0008da7e9d4c 100644
--- a/drivers/net/ifb.c
+++ b/drivers/net/ifb.c
@@ -231,6 +231,9 @@ static void ifb_setup(struct net_device *dev)
eth_hw_addr_random(dev);
dev->needs_free_netdev = true;
dev->priv_destructor = ifb_dev_free;
+
+ dev->min_mtu = 0;
+ dev->max_mtu = 0;
}
static netdev_tx_t ifb_xmit(struct sk_buff *skb, struct net_device *dev)