From: Xie He <xie.he.0...@gmail.com> [ Upstream commit 1a545ebe380bf4c1433e3c136e35a77764fda5ad ]
This driver didn't set hard_header_len. This patch sets hard_header_len for it according to its header_ops->create function. This driver's header_ops->create function (cisco_hard_header) creates a header of (struct hdlc_header), so hard_header_len should be set to sizeof(struct hdlc_header). Cc: Martin Schiller <m...@dev.tdt.de> Signed-off-by: Xie He <xie.he.0...@gmail.com> Acked-by: Krzysztof Halasa <k...@pm.waw.pl> Signed-off-by: David S. Miller <da...@davemloft.net> Signed-off-by: Sasha Levin <sas...@kernel.org> --- drivers/net/wan/hdlc_cisco.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wan/hdlc_cisco.c b/drivers/net/wan/hdlc_cisco.c index a030f5aa6b951..cc33441af4691 100644 --- a/drivers/net/wan/hdlc_cisco.c +++ b/drivers/net/wan/hdlc_cisco.c @@ -370,6 +370,7 @@ static int cisco_ioctl(struct net_device *dev, struct ifreq *ifr) memcpy(&state(hdlc)->settings, &new_settings, size); spin_lock_init(&state(hdlc)->lock); dev->header_ops = &cisco_header_ops; + dev->hard_header_len = sizeof(struct hdlc_header); dev->type = ARPHRD_CISCO; call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev); netif_dormant_on(dev); -- 2.25.1