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Subject[PATCH 4.4 109/312] mlxsw: spectrum: Fix misuse of hard_header_len
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From: Yotam Gigi <yotamg@mellanox.com>

commit feb7d387a6cf6c1ec66d4a2b6d4b2cc52309876e upstream.

In order to specify that the mlxsw spectrum driver needs additional
headroom for packets, there have been use of the hard_header_len field of
the netdevice struct.

This commit changes that to use needed_headroom instead, as this is the
correct way to do that.

Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Acked-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1261,7 +1261,7 @@ static int mlxsw_sp_port_create(struct m
/* Each packet needs to have a Tx header (metadata) on top all other
* headers.
*/
- dev->hard_header_len += MLXSW_TXHDR_LEN;
+ dev->needed_headroom = MLXSW_TXHDR_LEN;

err = mlxsw_sp_port_module_check(mlxsw_sp_port, &usable);
if (err) {

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