From: Eran Ben Elisha <eranbe@mellanox.com>
Date: Sun, 2 Dec 2018 14:34:36 +0200
Subject: net/mlx4_en: Change min MTU size to ETH_MIN_MTU
Patch-mainline: v4.20-rc6
Git-commit: 24be19e47779d604d1492c114459dca9a92acf78
References: bsc#1103989 FATE#326004
NIC driver minimal MTU size shall be set to ETH_MIN_MTU, as defined in
the RFC791 and in the network stack. Remove old mlx4_en only define for
it, which was set to wrong value.
Fixes: b80f71f5816f ("ethernet/mellanox: use core min/max MTU checking")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 4 ++--
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 1 -
2 files changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -3489,8 +3489,8 @@ int mlx4_en_init_netdev(struct mlx4_en_d
dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
}
- /* MTU range: 46 - hw-specific max */
- dev->min_mtu = MLX4_EN_MIN_MTU;
+ /* MTU range: 68 - hw-specific max */
+ dev->min_mtu = ETH_MIN_MTU;
dev->max_mtu = priv->max_mtu;
mdev->pndev[port] = dev;
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -161,7 +161,6 @@
#define MLX4_SELFTEST_LB_MIN_MTU (MLX4_LOOPBACK_TEST_PAYLOAD + NET_IP_ALIGN + \
ETH_HLEN + PREAMBLE_LEN)
-#define MLX4_EN_MIN_MTU 46
/* VLAN_HLEN is added twice,to support skb vlan tagged with multiple
* headers. (For example: ETH_P_8021Q and ETH_P_8021AD).
*/