netdev - [PATCH net-next V0 02/21] net/mlx4: Extending port

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Message-ID: <4ED8A588.3060802@mellanox.co.il>
Date:	Fri, 2 Dec 2011 12:16:40 +0200
From:	Yevgeny Petrilin <yevgenyp@...lanox.co.il>
To:	<davem@...emloft.net>
CC:	<netdev@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
	<roland@...estorage.com>, <yevgenyp@...lanox.co.il>,
	<liranl@...lanox.co.il>, <jackm@....mellanox.co.il>
Subject: [PATCH net-next V0  02/21] net/mlx4: Extending port_mask functionality

From: Jack Morgenstein <jackm@....mellanox.co.il>

Port mask now has additional state.
Port can be set as "none". In this case neither the mlx4_en or mlx4_ib
drivers take ownership of the port.
In multifunction mode there is an option to set the vfs as single ported devices.
This option will be added on a later stage
(in single function mode, both physical ports belong to same function)

Signed-off-by: Jack Morgenstein <jackm@....mellanox.co.il>
Signed-off-by: Yevgeny Petrilin <yevgenyp@...lanox.co.il>
---
 drivers/infiniband/hw/mlx4/main.c         |    2 +-
 drivers/net/ethernet/mellanox/mlx4/main.c |    4 +---
 include/linux/mlx4/device.h               |   13 ++++++-------
 3 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 77f3dbc..6128b29 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -177,7 +177,7 @@ mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
 {
 	struct mlx4_dev *dev = to_mdev(device)->dev;
 
-	return dev->caps.port_mask & (1 << (port_num - 1)) ?
+	return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
 		IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 94bbc85..64d03f8 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -140,10 +140,8 @@ static void mlx4_set_port_mask(struct mlx4_dev *dev)
 {
 	int i;
 
-	dev->caps.port_mask = 0;
 	for (i = 1; i <= dev->caps.num_ports; ++i)
-		if (dev->caps.port_type[i] == MLX4_PORT_TYPE_IB)
-			dev->caps.port_mask |= 1 << (i - 1);
+		dev->caps.port_mask[i] = dev->caps.port_type[i];
 }
 
 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index b9466af..3333018 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -302,7 +302,7 @@ struct mlx4_caps {
 	int                     log_num_prios;
 	enum mlx4_port_type	port_type[MLX4_MAX_PORTS + 1];
 	u8			supported_type[MLX4_MAX_PORTS + 1];
-	u32			port_mask;
+	u32			port_mask[MLX4_MAX_PORTS + 1];
 	enum mlx4_port_type	possible_type[MLX4_MAX_PORTS + 1];
 	u32			max_counters;
 	u8			ext_port_cap[MLX4_MAX_PORTS + 1];
@@ -507,13 +507,12 @@ struct mlx4_init_port_param {
 
 #define mlx4_foreach_port(port, dev, type)				\
 	for ((port) = 1; (port) <= (dev)->caps.num_ports; (port)++)	\
-		if (((type) == MLX4_PORT_TYPE_IB ? (dev)->caps.port_mask : \
-		     ~(dev)->caps.port_mask) & 1 << ((port) - 1))
+		if ((type) == (dev)->caps.port_mask[(port)])
 
-#define mlx4_foreach_ib_transport_port(port, dev)			\
-	for ((port) = 1; (port) <= (dev)->caps.num_ports; (port)++)	\
-		if (((dev)->caps.port_mask & 1 << ((port) - 1)) ||	\
-		     ((dev)->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
+#define mlx4_foreach_ib_transport_port(port, dev)                         \
+	for ((port) = 1; (port) <= (dev)->caps.num_ports; (port)++)	  \
+		if (((dev)->caps.port_mask[port] == MLX4_PORT_TYPE_IB) || \
+			((dev)->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
 
 static inline int mlx4_is_master(struct mlx4_dev *dev)
 {
-- 
1.7.7





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