Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8fcfb4db authored by Hadar Hen Zion's avatar Hadar Hen Zion Committed by David S. Miller
Browse files

net/mlx4_core: Add firmware commands to support device managed flow steering 



Add support for firmware commands to attach/detach a new device managed
steering mode. Such network steering rules allow the user to provide an
L2/L3/L4 flow specification to the firmware and have the device to steer
traffic that matches that specification to the provided QP.

Signed-off-by: default avatarHadar Hen Zion <hadarh@mellanox.co.il>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c96d97f4

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

+19 −0
Original line number Diff line number Diff line
@@ -1080,6 +1080,25 @@ static struct mlx4_cmd_info cmd_info[] = { 
		.verify = NULL,

		.wrapper = NULL

	},

	/* flow steering commands */

	{

		.opcode = MLX4_QP_FLOW_STEERING_ATTACH,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = true,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_QP_FLOW_STEERING_ATTACH_wrapper

	},

	{

		.opcode = MLX4_QP_FLOW_STEERING_DETACH,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_QP_FLOW_STEERING_DETACH_wrapper

	},

};



static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,

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

+29 −0
Original line number Diff line number Diff line
@@ -62,6 +62,35 @@ int mlx4_get_qp_per_mgm(struct mlx4_dev *dev) 
	return 4 * (mlx4_get_mgm_entry_size(dev) / 16 - 2);

}



static int mlx4_QP_FLOW_STEERING_ATTACH(struct mlx4_dev *dev,

					struct mlx4_cmd_mailbox *mailbox,

					u32 size,

					u64 *reg_id)

{

	u64 imm;

	int err = 0;



	err = mlx4_cmd_imm(dev, mailbox->dma, &imm, size, 0,

			   MLX4_QP_FLOW_STEERING_ATTACH, MLX4_CMD_TIME_CLASS_A,

			   MLX4_CMD_NATIVE);

	if (err)

		return err;

	*reg_id = imm;



	return err;

}



static int mlx4_QP_FLOW_STEERING_DETACH(struct mlx4_dev *dev, u64 regid)

{

	int err = 0;



	err = mlx4_cmd(dev, regid, 0, 0,

		       MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,

		       MLX4_CMD_NATIVE);



	return err;

}



static int mlx4_READ_ENTRY(struct mlx4_dev *dev, int index,

			   struct mlx4_cmd_mailbox *mailbox)

{

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

+10 −0
Original line number Diff line number Diff line
@@ -1118,6 +1118,16 @@ int mlx4_QUERY_IF_STAT_wrapper(struct mlx4_dev *dev, int slave, 
			       struct mlx4_cmd_mailbox *inbox,

			       struct mlx4_cmd_mailbox *outbox,

			       struct mlx4_cmd_info *cmd);

int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,

					 struct mlx4_vhcr *vhcr,

					 struct mlx4_cmd_mailbox *inbox,

					 struct mlx4_cmd_mailbox *outbox,

					 struct mlx4_cmd_info *cmd);

int mlx4_QP_FLOW_STEERING_DETACH_wrapper(struct mlx4_dev *dev, int slave,

					 struct mlx4_vhcr *vhcr,

					 struct mlx4_cmd_mailbox *inbox,

					 struct mlx4_cmd_mailbox *outbox,

					 struct mlx4_cmd_info *cmd);



int mlx4_get_mgm_entry_size(struct mlx4_dev *dev);

int mlx4_get_qp_per_mgm(struct mlx4_dev *dev);

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

+24 −0
Original line number Diff line number Diff line
@@ -2738,6 +2738,30 @@ int mlx4_QP_ATTACH_wrapper(struct mlx4_dev *dev, int slave, 
	return err;

}



int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,

					 struct mlx4_vhcr *vhcr,

					 struct mlx4_cmd_mailbox *inbox,

					 struct mlx4_cmd_mailbox *outbox,

					 struct mlx4_cmd_info *cmd)

{

	return mlx4_cmd_imm(dev, inbox->dma, &vhcr->out_param,

			    vhcr->in_modifier, 0,

			    MLX4_QP_FLOW_STEERING_ATTACH,

			    MLX4_CMD_TIME_CLASS_A,

			    MLX4_CMD_NATIVE);

}



int mlx4_QP_FLOW_STEERING_DETACH_wrapper(struct mlx4_dev *dev, int slave,

					 struct mlx4_vhcr *vhcr,

					 struct mlx4_cmd_mailbox *inbox,

					 struct mlx4_cmd_mailbox *outbox,

					 struct mlx4_cmd_info *cmd)

{

	return mlx4_cmd(dev, vhcr->in_param, 0, 0,

			MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,

			MLX4_CMD_NATIVE);

}



enum {

	BUSY_MAX_RETRIES = 10

};

include/linux/mlx4/cmd.h

+4 −0
Original line number Diff line number Diff line
@@ -154,6 +154,10 @@ enum { 
	/* set port opcode modifiers */

	MLX4_SET_PORT_PRIO2TC = 0x8,

	MLX4_SET_PORT_SCHEDULER  = 0x9,



	/* register/delete flow steering network rules */

	MLX4_QP_FLOW_STEERING_ATTACH = 0x65,

	MLX4_QP_FLOW_STEERING_DETACH = 0x66,

};



enum {