netdev - [PATCH net-next] net/mlx4: Set proper build dependancy with vxlan

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Date:	Sun, 30 Mar 2014 14:28:25 +0300
From:	Or Gerlitz <ogerlitz@...lanox.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, amirv@...lanox.com,
	Or Gerlitz <ogerlitz@...lanox.com>
Subject: [PATCH net-next] net/mlx4: Set proper build dependancy with vxlan

Make sure that vxlan_get_rx_port() is present in the kernel build in a manner
consistent with mlx4. Otherwise, mlx4 can be made built-in where vxlan as a module
and the linking phase of the kernel build fails. Add CONFIG_MLX4_EN_VXLAN for that.

Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlx4/Kconfig     |    7 +++++++
 drivers/net/ethernet/mellanox/mlx4/en_netdev.c |    2 ++
 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/Kconfig b/drivers/net/ethernet/mellanox/mlx4/Kconfig
index 1a6e188..1486ce9 100644
--- a/drivers/net/ethernet/mellanox/mlx4/Kconfig
+++ b/drivers/net/ethernet/mellanox/mlx4/Kconfig
@@ -23,6 +23,13 @@ config MLX4_EN_DCB
 
 	  If unsure, set to Y
 
+config MLX4_EN_VXLAN
+	bool "VXLAN offloads Support"
+	default y
+	depends on MLX4_EN && VXLAN && !(MLX4_EN=y && VXLAN=m)
+	---help---
+	  Say Y here if you want to use VXLAN offloads in the driver.
+
 config MLX4_CORE
 	tristate
 	depends on PCI
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 82d7eb5..44fa7b0 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -1698,8 +1698,10 @@ int mlx4_en_start_port(struct net_device *dev)
 
 	mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
 
+#ifdef CONFIG_MLX4_EN_VXLAN
 	if (priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
 		vxlan_get_rx_port(dev);
+#endif
 	priv->port_up = true;
 	netif_tx_start_all_queues(dev);
 	netif_device_attach(dev);
-- 
1.7.1

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