[PATCH AUTOSEL 4.19 04/26] drivers/net/wan/lapbether: Added needed_tailroom

Sasha Levin
2020-09-07T16:54:11Z

From: Xie He <xie.he.0141@gmail.com>

[ Upstream commit 1ee39c1448c4e0d480c5b390e2db1987561fb5c2 ]

The underlying Ethernet device may request necessary tailroom to be
allocated by setting needed_tailroom. This driver should also set
needed_tailroom to request the tailroom needed by the underlying
Ethernet device to be allocated.

Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Cc: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wan/lapbether.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/wan/lapbether.c b/drivers/net/wan/lapbether.c
index c94dfa70f2a33..6b2553e893aca 100644
--- a/drivers/net/wan/lapbether.c
+++ b/drivers/net/wan/lapbether.c
@@ -343,6 +343,7 @@ static int lapbeth_new_device(struct net_device *dev)
*/
ndev->needed_headroom = -1 + 3 + 2 + dev->hard_header_len
+ dev->needed_headroom;
+ ndev->needed_tailroom = dev->needed_tailroom;

lapbeth = netdev_priv(ndev);
lapbeth->axdev = ndev;
--
2.25.1