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net/mlx4_core: Port aggregation upper layer interface

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Supply interface functions to bond and unbond ports of a mlx4 internal
interfaces. Example for such an interface is the one registered by the
mlx4 IB driver under RoCE.

There are

1. Functions to go in/out to/from bonded mode
2. Function to remap virtual ports to physical ports

The bond_mutex prevents simultaneous access to data that keep status of
the device in bonded mode.

The upper mlx4 interface marks to the mlx4 core module that they
want to be subject for such bonding by setting the MLX4_INTFF_BONDING
flag. Interface which goes to/from bonded mode is re-created.

The mlx4 Ethernet driver does not set this flag when registering the
interface, the IB driver does.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Moni Shoua
2015-02-03 16:48:33 +02:00
committed by David S. Miller
parent 59e14e3250
commit 53f33ae295
8 changed files with 177 additions and 2 deletions
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19
include/linux/mlx4/driver.h
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@@ -49,6 +49,10 @@ enum mlx4_dev_event {
MLX4_DEV_EVENT_SLAVE_SHUTDOWN,
};
enum {
MLX4_INTFF_BONDING = 1 << 0
};
struct mlx4_interface {
void * (*add) (struct mlx4_dev *dev);
void (*remove)(struct mlx4_dev *dev, void *context);
@@ -57,11 +61,26 @@ struct mlx4_interface {
void * (*get_dev)(struct mlx4_dev *dev, void *context, u8 port);
struct list_head list;
enum mlx4_protocol protocol;
int flags;
};
int mlx4_register_interface(struct mlx4_interface *intf);
void mlx4_unregister_interface(struct mlx4_interface *intf);
int mlx4_bond(struct mlx4_dev *dev);
int mlx4_unbond(struct mlx4_dev *dev);
static inline int mlx4_is_bonded(struct mlx4_dev *dev)
{
return !!(dev->flags & MLX4_FLAG_BONDED);
}
struct mlx4_port_map {
u8 port1;
u8 port2;
};
int mlx4_port_map_set(struct mlx4_dev *dev, struct mlx4_port_map *v2p);
void *mlx4_get_protocol_dev(struct mlx4_dev *dev, enum mlx4_protocol proto, int port);
static inline u64 mlx4_mac_to_u64(u8 *addr)