net/mlx4: Add utils for N-Port VFs

This patch adds the following utils:
1. Convert slave_id -> VF
2. Get the active ports by slave_id
3. Convert slave's port to real port
4. Get the slave's port from real port
5. Get all slaves that uses the i'th real port
6. Get all slaves that uses the i'th real port exclusively

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 27 insertions, 0 deletions

diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index b3044f32aef1..122c7cabaee7 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -1204,4 +1204,31 @@ int mlx4_FLOW_STEERING_IB_UC_QP_RANGE(struct mlx4_dev *dev, u32 min_range_qpn,
 
 cycle_t mlx4_read_clock(struct mlx4_dev *dev);
 
+struct mlx4_active_ports {
+        DECLARE_BITMAP(ports, MLX4_MAX_PORTS);
+};
+/* Returns a bitmap of the physical ports which are assigned to slave */
+struct mlx4_active_ports mlx4_get_active_ports(struct mlx4_dev *dev, int slave);
+
+/* Returns the physical port that represents the virtual port of the slave, */
+/* or a value < 0 in case of an error. If a slave has 2 ports, the identity */
+/* mapping is returned.                                                     */
+int mlx4_slave_convert_port(struct mlx4_dev *dev, int slave, int port);
+
+struct mlx4_slaves_pport {
+        DECLARE_BITMAP(slaves, MLX4_MFUNC_MAX);
+};
+/* Returns a bitmap of all slaves that are assigned to port. */
+struct mlx4_slaves_pport mlx4_phys_to_slaves_pport(struct mlx4_dev *dev,
+                                                   int port);
+
+/* Returns a bitmap of all slaves that are assigned exactly to all the */
+/* the ports that are set in crit_ports.                               */
+struct mlx4_slaves_pport mlx4_phys_to_slaves_pport_actv(
+                struct mlx4_dev *dev,
+                const struct mlx4_active_ports *crit_ports);
+
+/* Returns the slave's virtual port that represents the physical port. */
+int mlx4_phys_to_slave_port(struct mlx4_dev *dev, int slave, int port);
+
 #endif /* MLX4_DEVICE_H */