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Commit 4de65803 authored by Matan Barak's avatar Matan Barak Committed by Roland Dreier
Browse files

mlx4_core: Add support for steerable IB UD QPs 



This patch adds support for allocating IB UD QPs that we can steer
traffic from.  We introduce a new firmware command FLOW_STEERING_IB_UC_QP_RANGE
and a capability bit.

This command isn't supported for VFs.

Signed-off-by: default avatarMatan Barak <matanb@mellanox.com>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
parent 240ae00e

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

+9 −0
Original line number Diff line number Diff line
@@ -1371,6 +1371,15 @@ static struct mlx4_cmd_info cmd_info[] = { 
		.verify = NULL,

		.wrapper = mlx4_QP_FLOW_STEERING_DETACH_wrapper

	},

	{

		.opcode = MLX4_FLOW_STEERING_IB_UC_QP_RANGE,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_FLOW_STEERING_IB_UC_QP_RANGE_wrapper

	},

};



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

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

+10 −0
Original line number Diff line number Diff line
@@ -513,6 +513,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) 
#define QUERY_DEV_CAP_MAX_XRC_OFFSET		0x67

#define QUERY_DEV_CAP_MAX_COUNTERS_OFFSET	0x68

#define QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET	0x70

#define QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET	0x74

#define QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET	0x76

#define QUERY_DEV_CAP_FLOW_STEERING_MAX_QP_OFFSET	0x77

#define QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET	0x80
@@ -603,6 +604,9 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) 
	if (field & 0x80)

		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_FS_EN;

	dev_cap->fs_log_max_ucast_qp_range_size = field & 0x1f;

	MLX4_GET(field, outbox, QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET);

	if (field & 0x80)

		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_DMFS_IPOIB;

	MLX4_GET(field, outbox, QUERY_DEV_CAP_FLOW_STEERING_MAX_QP_OFFSET);

	dev_cap->fs_max_num_qp_per_entry = field;

	MLX4_GET(stat_rate, outbox, QUERY_DEV_CAP_RATE_SUPPORT_OFFSET);
@@ -860,6 +864,12 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave, 
		MLX4_PUT(outbox->buf, field,

			 QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET);

	}



	/* turn off ipoib managed steering for guests */

	MLX4_GET(field, outbox, QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET);

	field &= ~0x80;

	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET);



	return 0;

}

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

+17 −0
Original line number Diff line number Diff line
@@ -895,6 +895,23 @@ int mlx4_flow_detach(struct mlx4_dev *dev, u64 reg_id) 
}

EXPORT_SYMBOL_GPL(mlx4_flow_detach);



int mlx4_FLOW_STEERING_IB_UC_QP_RANGE(struct mlx4_dev *dev, u32 min_range_qpn,

				      u32 max_range_qpn)

{

	int err;

	u64 in_param;



	in_param = ((u64) min_range_qpn) << 32;

	in_param |= ((u64) max_range_qpn) & 0xFFFFFFFF;



	err = mlx4_cmd(dev, in_param, 0, 0,

			MLX4_FLOW_STEERING_IB_UC_QP_RANGE,

			MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);



	return err;

}

EXPORT_SYMBOL_GPL(mlx4_FLOW_STEERING_IB_UC_QP_RANGE);



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)

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

+5 −0
Original line number Diff line number Diff line
@@ -1236,6 +1236,11 @@ int mlx4_QP_FLOW_STEERING_DETACH_wrapper(struct mlx4_dev *dev, int slave, 
					 struct mlx4_cmd_mailbox *inbox,

					 struct mlx4_cmd_mailbox *outbox,

					 struct mlx4_cmd_info *cmd);

int mlx4_FLOW_STEERING_IB_UC_QP_RANGE_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

+10 −0
Original line number Diff line number Diff line
@@ -3844,6 +3844,16 @@ int mlx4_QUERY_IF_STAT_wrapper(struct mlx4_dev *dev, int slave, 
	return err;

}



int mlx4_FLOW_STEERING_IB_UC_QP_RANGE_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 -EPERM;

}





static void detach_qp(struct mlx4_dev *dev, int slave, struct res_qp *rqp)

{

	struct res_gid *rgid;