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net: ip_tunnel: remove unused non-strict __ip_tunnel_change_mtu

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The last user of this function was the recently removed vport-gre
module from openvswitch.  Let's drop the function.  All other modules
use the strict variant.

Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260815001942.1089545-1-i.maximets@ovn.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Ilya Maximets 2026-08-15 02:19:32 +02:00 committed by Paolo Abeni
parent d92255b405
commit 66da914db4
2 changed files with 2 additions and 16 deletions
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1
include/net/ip_tunnels.h
View File

@ -412,7 +412,6 @@ bool ip_tunnel_parm_from_user(struct ip_tunnel_parm_kern *kp,
bool ip_tunnel_parm_to_user(void __user *data, struct ip_tunnel_parm_kern *kp);
int ip_tunnel_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
void __user *data, int cmd);
int __ip_tunnel_change_mtu(struct net_device *dev, int new_mtu, bool strict);
int ip_tunnel_change_mtu(struct net_device *dev, int new_mtu);
struct ip_tunnel *ip_tunnel_lookup(struct ip_tunnel_net *itn,

17
net/ipv4/ip_tunnel.c
View File

@ -1054,7 +1054,7 @@ int ip_tunnel_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
}
EXPORT_SYMBOL_GPL(ip_tunnel_siocdevprivate);
int __ip_tunnel_change_mtu(struct net_device *dev, int new_mtu, bool strict)
int ip_tunnel_change_mtu(struct net_device *dev, int new_mtu)
{
struct ip_tunnel *tunnel = netdev_priv(dev);
int t_hlen = tunnel->hlen + sizeof(struct iphdr);
@ -1063,25 +1063,12 @@ int __ip_tunnel_change_mtu(struct net_device *dev, int new_mtu, bool strict)
if (dev->type == ARPHRD_ETHER)
max_mtu -= dev->hard_header_len;
if (new_mtu < ETH_MIN_MTU)
if (new_mtu < ETH_MIN_MTU || new_mtu > max_mtu)
return -EINVAL;
if (new_mtu > max_mtu) {
if (strict)
return -EINVAL;
new_mtu = max_mtu;
}
WRITE_ONCE(dev->mtu, new_mtu);
return 0;
}
EXPORT_SYMBOL_GPL(__ip_tunnel_change_mtu);
int ip_tunnel_change_mtu(struct net_device *dev, int new_mtu)
{
return __ip_tunnel_change_mtu(dev, new_mtu, true);
}
EXPORT_SYMBOL_GPL(ip_tunnel_change_mtu);
static void ip_tunnel_dev_free(struct net_device *dev)