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Commit fd91c49f authored by Hadar Hen Zion's avatar Hadar Hen Zion Committed by David S. Miller
Browse files

net/mlx4_core: Add helper function to translate B0 steering rules to DMFS 



A pre-step for supporting guests that use B0 steering over a hypervisor
that runs in DMFS (device managed flow steering mode). Add helper function
which allows to translate L2 attachments / detachments provided in B0 mode
to DMFS rules.

Signed-off-by: default avatarHadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4b49f58f

drivers/net/ethernet/mellanox/mlx4/mcg.c

+29 −22
Original line number Diff line number Diff line
@@ -1125,28 +1125,11 @@ static int mlx4_QP_ATTACH(struct mlx4_dev *dev, struct mlx4_qp *qp, 
	return err;

}



int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],

			  u8 port, int block_mcast_loopback,

int mlx4_trans_to_dmfs_attach(struct mlx4_dev *dev, struct mlx4_qp *qp,

			      u8 gid[16], u8 port,

			      int block_mcast_loopback,

			      enum mlx4_protocol prot, u64 *reg_id)

{



	switch (dev->caps.steering_mode) {

	case MLX4_STEERING_MODE_A0:

		if (prot == MLX4_PROT_ETH)

			return 0;



	case MLX4_STEERING_MODE_B0:

		if (prot == MLX4_PROT_ETH)

			gid[7] |= (MLX4_MC_STEER << 1);



		if (mlx4_is_mfunc(dev))

			return mlx4_QP_ATTACH(dev, qp, gid, 1,

					      block_mcast_loopback, prot);

		return mlx4_qp_attach_common(dev, qp, gid,

					     block_mcast_loopback, prot,

					     MLX4_MC_STEER);



	case MLX4_STEERING_MODE_DEVICE_MANAGED: {

		struct mlx4_spec_list spec = { {NULL} };

		__be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
@@ -1182,6 +1165,30 @@ int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], 
		return mlx4_flow_attach(dev, &rule, reg_id);

}



int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],

			  u8 port, int block_mcast_loopback,

			  enum mlx4_protocol prot, u64 *reg_id)

{

	switch (dev->caps.steering_mode) {

	case MLX4_STEERING_MODE_A0:

		if (prot == MLX4_PROT_ETH)

			return 0;



	case MLX4_STEERING_MODE_B0:

		if (prot == MLX4_PROT_ETH)

			gid[7] |= (MLX4_MC_STEER << 1);



		if (mlx4_is_mfunc(dev))

			return mlx4_QP_ATTACH(dev, qp, gid, 1,

					      block_mcast_loopback, prot);

		return mlx4_qp_attach_common(dev, qp, gid,

					     block_mcast_loopback, prot,

					     MLX4_MC_STEER);



	case MLX4_STEERING_MODE_DEVICE_MANAGED:

		return mlx4_trans_to_dmfs_attach(dev, qp, gid, port,

						 block_mcast_loopback,

						 prot, reg_id);

	default:

		return -EINVAL;

	}

drivers/net/ethernet/mellanox/mlx4/mlx4.h

+4 −0
Original line number Diff line number Diff line
@@ -1190,6 +1190,10 @@ int mlx4_qp_detach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], 
int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],

			  int block_mcast_loopback, enum mlx4_protocol prot,

			  enum mlx4_steer_type steer);

int mlx4_trans_to_dmfs_attach(struct mlx4_dev *dev, struct mlx4_qp *qp,

			      u8 gid[16], u8 port,

			      int block_mcast_loopback,

			      enum mlx4_protocol prot, u64 *reg_id);

int mlx4_SET_MCAST_FLTR_wrapper(struct mlx4_dev *dev, int slave,

				struct mlx4_vhcr *vhcr,

				struct mlx4_cmd_mailbox *inbox,