From: Alexey Kodanev Date: Thu, 19 Apr 2018 12:42:31 +0000 (+0300) Subject: geneve: check MTU for a minimum in geneve_change_mtu() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=321acc1c68c13ce113531a8bc3dc5d43814c4ae2;p=linux.git geneve: check MTU for a minimum in geneve_change_mtu() geneve_change_mtu() will be used not only as ndo_change_mtu() callback, but also to verify a user specified MTU on a new link creation in the next patch. Signed-off-by: Alexey Kodanev Signed-off-by: David S. Miller --- diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index b650f845af252..ae649f699a92c 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -942,11 +942,10 @@ tx_error: static int geneve_change_mtu(struct net_device *dev, int new_mtu) { - /* Only possible if called internally, ndo_change_mtu path's new_mtu - * is guaranteed to be between dev->min_mtu and dev->max_mtu. - */ if (new_mtu > dev->max_mtu) new_mtu = dev->max_mtu; + else if (new_mtu < dev->min_mtu) + new_mtu = dev->min_mtu; dev->mtu = new_mtu; return 0;