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authorDavid S. Miller <davem@davemloft.net>2020-01-26 10:40:21 +0100
committerDavid S. Miller <davem@davemloft.net>2020-01-26 10:40:21 +0100
commit4d8773b68e83558025303f266070b31bc4101e73 (patch)
tree151cafa469fbc6a411d36b58ab802f67869cc0bb /net/core/rtnetlink.c
parent3333e50b64fe30b7e53cf02456a2f567f689ae4f (diff)
parent2821e26f3a0a3872184581caac8115bb02641941 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor conflict in mlx5 because changes happened to code that has moved meanwhile. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/rtnetlink.c')
-rw-r--r--net/core/rtnetlink.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 20bc406f3871..cdad6ed532c4 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -3053,8 +3053,17 @@ struct net_device *rtnl_create_link(struct net *net, const char *ifname,
dev->rtnl_link_ops = ops;
dev->rtnl_link_state = RTNL_LINK_INITIALIZING;
- if (tb[IFLA_MTU])
- dev->mtu = nla_get_u32(tb[IFLA_MTU]);
+ if (tb[IFLA_MTU]) {
+ u32 mtu = nla_get_u32(tb[IFLA_MTU]);
+ int err;
+
+ err = dev_validate_mtu(dev, mtu, extack);
+ if (err) {
+ free_netdev(dev);
+ return ERR_PTR(err);
+ }
+ dev->mtu = mtu;
+ }
if (tb[IFLA_ADDRESS]) {
memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]),
nla_len(tb[IFLA_ADDRESS]));