mlx4_en: Add API to query interfaces for given internal device
Updated mlx4_en interface to provide a query function for it's
internal net_device structure.
Signed-off-by: Oren Duer <o...@mellanox.co.il>
Signed-off-by: Vu Pham <v...@mellanx.com>
drivers/net/mlx4/en_main.c | 14 ++++++++++++++
drivers/net/mlx4/intf.c | 30 ++++++++++++++++++++++++++++++
include/linux/mlx4/driver.h | 7 +++++++
3 files changed, 51 insertions(+), 0 deletions(-)
mlx4: Add API to query interfaces for given internal device
Updated mlx4_en interface to provide a query function for it's
internal net_device structure.
Signed-off-by: Oren Duer <o...@mellanox.co.il>
Signed-off-by: Vu Pham <v...@mellanx.com>
drivers/net/mlx4/en_main.c | 14 ++++++++++++++
drivers/net/mlx4/intf.c | 30 ++++++++++++++++++++++++++++++
include/linux/mlx4/driver.h | 7 +++++++
3 files changed, 51 insertions(+), 0 deletions(-)
diff --git a/drivers/net/mlx4/en_main.c b/drivers/net/mlx4/en_main.c
index cbabf14..6fce433 100644
--- a/drivers/net/mlx4/en_main.c
+++ b/drivers/net/mlx4/en_main.c
@@ -262,10 +262,24 @@ err_free_res:
return NULL;
}
+enum mlx4_query_reply mlx4_en_query(void *endev_ptr, void *int_dev)
+{
+ struct mlx4_en_dev *mdev = endev_ptr;
+ struct net_device *netdev = int_dev;
+ int p;
+
+ for (p = 1; p <= MLX4_MAX_PORTS; ++p)
+ if (mdev->pndev[p] == netdev)
+ return p;
+
+ return MLX4_QUERY_NOT_MINE;
+}
+
static struct mlx4_interface mlx4_en_interface = {
.add = mlx4_en_add,
.remove = mlx4_en_remove,
.event = mlx4_en_event,
+ .query = mlx4_en_query
};
static int __init mlx4_en_init(void)
diff --git a/drivers/net/mlx4/intf.c b/drivers/net/mlx4/intf.c
index 5550678..beeed80 100644
--- a/drivers/net/mlx4/intf.c
+++ b/drivers/net/mlx4/intf.c
@@ -114,6 +114,36 @@ void mlx4_unregister_interface(struct mlx4_interface *intf)
}
EXPORT_SYMBOL_GPL(mlx4_unregister_interface);
+struct mlx4_dev *mlx4_query_interface(void *int_dev, int *port)
+{
+ struct mlx4_priv *priv;
+ struct mlx4_device_context *dev_ctx;
+ enum mlx4_query_reply r;
+ unsigned long flags;
+
+ mutex_lock(&intf_mutex);
+
+ list_for_each_entry(priv, &dev_list, dev_list) {
+ spin_lock_irqsave(&priv->ctx_lock, flags);
+ list_for_each_entry(dev_ctx, &priv->ctx_list, list) {
+ if (!dev_ctx->intf->query)
+ continue;
+ r = dev_ctx->intf->query(dev_ctx->context, int_dev);
+ if (r != MLX4_QUERY_NOT_MINE) {
+ *port = r;
+ spin_unlock_irqrestore(&priv->ctx_lock, flags);
+ mutex_unlock(&intf_mutex);
+ return &priv->dev;
+ }
+ }
+ spin_unlock_irqrestore(&priv->ctx_lock, flags);
+ }
+
+ mutex_unlock(&intf_mutex);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(mlx4_query_interface);
+
void mlx4_dispatch_event(struct mlx4_dev *dev, enum mlx4_dev_event type, int port)
{
struct mlx4_priv *priv = mlx4_priv(dev);
diff --git a/include/linux/mlx4/driver.h b/include/linux/mlx4/driver.h
index 53c5fdb..55b45a6 100644
--- a/include/linux/mlx4/driver.h
+++ b/include/linux/mlx4/driver.h
@@ -44,15 +44,22 @@ enum mlx4_dev_event {
MLX4_DEV_EVENT_PORT_REINIT,
};
+enum mlx4_query_reply {
+ MLX4_QUERY_NOT_MINE = -1,
+ MLX4_QUERY_MINE_NOPORT = 0
+};
+
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);
+ enum mlx4_query_reply (*query) (void *context, void *);
struct list_head list;
};
int mlx4_register_interface(struct mlx4_interface *intf);
void mlx4_unregister_interface(struct mlx4_interface *intf);
+struct mlx4_dev *mlx4_query_interface(void *, int *port);
#endif /* MLX4_DRIVER_H */
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