[PATCH 4.19 006/106] qmi_wwan: add MTU default to qmap network interface

From: Greg Kroah-Hartman
Date: Thu Jan 24 2019 - 14:58:15 EST


4.19-stable review patch. If anyone has any objections, please let me know.

------------------

From: Daniele Palmas <dnlplm@xxxxxxxxx>

[ Upstream commit f87118d5760f00af7228033fbe783c7f380d2866 ]

This patch adds MTU default value to qmap network interface in
order to avoid "RTNETLINK answers: No buffer space available"
error when setting an ipv6 address.

Signed-off-by: Daniele Palmas <dnlplm@xxxxxxxxx>
Acked-by: BjÃrn Mork <bjorn@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/usb/qmi_wwan.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -123,6 +123,7 @@ static void qmimux_setup(struct net_devi
dev->addr_len = 0;
dev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
dev->netdev_ops = &qmimux_netdev_ops;
+ dev->mtu = 1500;
dev->needs_free_netdev = true;
}