net/mlx5e: Fix LSO vlan insertion

Consider vlan insertion impact on headers copy size also for LSO
packets.
Signed-off-by: NAchiad Shochat <achiad@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx5/core/en_tx.c

@@ -116,7 +116,7 @@ static inline u16 mlx5e_get_inline_hdr_size(struct mlx5e_sq *sq,
 	 * headers and occur before the data gather.
 	 * Therefore these headers must be copied into the WQE
 	 */
-#define MLX5E_MIN_INLINE (ETH_HLEN + 2/*vlan tag*/)
+#define MLX5E_MIN_INLINE ETH_HLEN
 
 	if (bf && (skb_headlen(skb) <= sq->max_inline))
 		return skb_headlen(skb);
@@ -128,7 +128,7 @@ static inline void mlx5e_insert_vlan(void *start, struct sk_buff *skb, u16 ihs)
 {
 	struct vlan_ethhdr *vhdr = (struct vlan_ethhdr *)start;
 	int cpy1_sz = 2 * ETH_ALEN;
-	int cpy2_sz = ihs - cpy1_sz - VLAN_HLEN;
+	int cpy2_sz = ihs - cpy1_sz;
 
 	skb_copy_from_linear_data(skb, vhdr, cpy1_sz);
 	skb_pull_inline(skb, cpy1_sz);
@@ -192,6 +192,7 @@ static netdev_tx_t mlx5e_sq_xmit(struct mlx5e_sq *sq, struct sk_buff *skb)
 
 	if (skb_vlan_tag_present(skb)) {
 		mlx5e_insert_vlan(eseg->inline_hdr_start, skb, ihs);
+		ihs += VLAN_HLEN;
 	} else {
 		skb_copy_from_linear_data(skb, eseg->inline_hdr_start, ihs);
 		skb_pull_inline(skb, ihs);