Add a mechanism for mlx4 core interfaces to get a pointer to other interfaces'
device object. For this, an exported function, mlx4_get_prot_dev() is added,
which allows an interfaces to get some other interface's device based on the
protocol that interface implements. Two new protocols are added, MLX4_PROT_IB
and MLX4_PROT_EN. This comes as a preperation for IBoE so that mlx4_ib will be
able to refer to the corresponding en device.
Signed-off-by: Eli Cohen <e...@mellanox.co.il>
---
drivers/net/mlx4/en_main.c | 15 ++++++++++++---
drivers/net/mlx4/intf.c | 21 +++++++++++++++++++++
drivers/net/mlx4/mlx4.h | 1 +
include/linux/mlx4/driver.h | 16 ++++++++++++----
4 files changed, 46 insertions(+), 7 deletions(-)
diff --git a/drivers/net/mlx4/en_main.c b/drivers/net/mlx4/en_main.c
index cbabf14..93e0239 100644
--- a/drivers/net/mlx4/en_main.c
+++ b/drivers/net/mlx4/en_main.c
@@ -101,6 +101,13 @@ static int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
return 0;
}
+static void *get_netdev(struct mlx4_dev *dev, void *ctx, u8 port)
+{
+ struct mlx4_en_dev *endev = ctx;
+
+ return endev->pndev[port];
+}
+
static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr,
enum mlx4_dev_event event, int port)
{
@@ -263,9 +270,11 @@ err_free_res:
}
static struct mlx4_interface mlx4_en_interface = {
- .add = mlx4_en_add,
- .remove = mlx4_en_remove,
- .event = mlx4_en_event,
+ .add = mlx4_en_add,
+ .remove = mlx4_en_remove,
+ .event = mlx4_en_event,
+ .get_prot_dev = get_netdev,
+ .protocol = MLX4_PROT_EN,
};
static int __init mlx4_en_init(void)
diff --git a/drivers/net/mlx4/intf.c b/drivers/net/mlx4/intf.c
index 5550678..70d67bc 100644
--- a/drivers/net/mlx4/intf.c
+++ b/drivers/net/mlx4/intf.c
@@ -161,3 +161,24 @@ void mlx4_unregister_device(struct mlx4_dev *dev)
mutex_unlock(&intf_mutex);
}
+
+void *mlx4_get_prot_dev(struct mlx4_dev *dev, enum mlx4_prot proto, int port)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ struct mlx4_device_context *dev_ctx;
+ unsigned long flags;
+ void *result = NULL;
+
+ spin_lock_irqsave(&priv->ctx_lock, flags);
+
+ list_for_each_entry(dev_ctx, &priv->ctx_list, list)
+ if (dev_ctx->intf->protocol == proto &&
dev_ctx->intf->get_prot_dev) {
+ result = dev_ctx->intf->get_prot_dev(dev,
dev_ctx->context, port);
+ break;
+ }
+
+ spin_unlock_irqrestore(&priv->ctx_lock, flags);
+
+ return result;
+}
+EXPORT_SYMBOL(mlx4_get_prot_dev);
diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h
index 13343e8..4dcf567 100644
--- a/drivers/net/mlx4/mlx4.h
+++ b/drivers/net/mlx4/mlx4.h
@@ -363,6 +363,7 @@ int mlx4_restart_one(struct pci_dev *pdev);
int mlx4_register_device(struct mlx4_dev *dev);
void mlx4_unregister_device(struct mlx4_dev *dev);
void mlx4_dispatch_event(struct mlx4_dev *dev, enum mlx4_dev_event type, int
port);
+void *mlx4_find_get_prot_dev(struct mlx4_dev *dev, enum mlx4_prot proto, int
port);
struct mlx4_dev_cap;
struct mlx4_init_hca_param;
diff --git a/include/linux/mlx4/driver.h b/include/linux/mlx4/driver.h
index 53c5fdb..0083256 100644
--- a/include/linux/mlx4/driver.h
+++ b/include/linux/mlx4/driver.h
@@ -44,15 +44,23 @@ enum mlx4_dev_event {
MLX4_DEV_EVENT_PORT_REINIT,
};
+enum mlx4_prot {
+ MLX4_PROT_IB,
+ MLX4_PROT_EN,
+};
+
struct mlx4_interface {
- void * (*add) (struct mlx4_dev *dev);
- void (*remove)(struct mlx4_dev *dev, void *context);
- void (*event) (struct mlx4_dev *dev, void *context,
- enum mlx4_dev_event event, int port);
+ void * (*add) (struct mlx4_dev *dev);
+ void (*remove)(struct mlx4_dev *dev, void *context);
+ void (*event) (struct mlx4_dev *dev, void *context,
+ enum mlx4_dev_event event, int port);
+ void * (*get_prot_dev) (struct mlx4_dev *dev, void *context, u8 port);
+ enum mlx4_prot protocol;
struct list_head list;
};
int mlx4_register_interface(struct mlx4_interface *intf);
void mlx4_unregister_interface(struct mlx4_interface *intf);
+void *mlx4_get_prot_dev(struct mlx4_dev *dev, enum mlx4_prot proto, int port);
#endif /* MLX4_DRIVER_H */
--
1.7.2.2
--
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