[linux-2.6-block.git] / drivers / infiniband / hw / mlx5 / mad.c

/*
 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <linux/mlx5/vport.h>
#include <rdma/ib_mad.h>
#include <rdma/ib_smi.h>
#include <rdma/ib_pma.h>
#include "mlx5_ib.h"
#include "cmd.h"

enum {
	MLX5_IB_VENDOR_CLASS1 = 0x9,
	MLX5_IB_VENDOR_CLASS2 = 0xa
};

static bool can_do_mad_ifc(struct mlx5_ib_dev *dev, u8 port_num,
			   struct ib_mad *in_mad)
{
	if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED &&
	    in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
		return true;
	return dev->mdev->port_caps[port_num - 1].has_smi;
}

static int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey,
			int ignore_bkey, u8 port, const struct ib_wc *in_wc,
			const struct ib_grh *in_grh, const void *in_mad,
			void *response_mad)
{
	u8 op_modifier = 0;

	if (!can_do_mad_ifc(dev, port, (struct ib_mad *)in_mad))
		return -EPERM;

	/* Key check traps can't be generated unless we have in_wc to
	 * tell us where to send the trap.
	 */
	if (ignore_mkey || !in_wc)
		op_modifier |= 0x1;
	if (ignore_bkey || !in_wc)
		op_modifier |= 0x2;

	return mlx5_cmd_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier,
				port);
}

static void pma_cnt_ext_assign(struct ib_pma_portcounters_ext *pma_cnt_ext,
			       void *out)
{
#define MLX5_SUM_CNT(p, cntr1, cntr2)	\
	(MLX5_GET64(query_vport_counter_out, p, cntr1) + \
	MLX5_GET64(query_vport_counter_out, p, cntr2))

	pma_cnt_ext->port_xmit_data =
		cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.octets,
					 transmitted_ib_multicast.octets) >> 2);
	pma_cnt_ext->port_rcv_data =
		cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.octets,
					 received_ib_multicast.octets) >> 2);
	pma_cnt_ext->port_xmit_packets =
		cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.packets,
					 transmitted_ib_multicast.packets));
	pma_cnt_ext->port_rcv_packets =
		cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.packets,
					 received_ib_multicast.packets));
	pma_cnt_ext->port_unicast_xmit_packets =
		MLX5_GET64_BE(query_vport_counter_out,
			      out, transmitted_ib_unicast.packets);
	pma_cnt_ext->port_unicast_rcv_packets =
		MLX5_GET64_BE(query_vport_counter_out,
			      out, received_ib_unicast.packets);
	pma_cnt_ext->port_multicast_xmit_packets =
		MLX5_GET64_BE(query_vport_counter_out,
			      out, transmitted_ib_multicast.packets);
	pma_cnt_ext->port_multicast_rcv_packets =
		MLX5_GET64_BE(query_vport_counter_out,
			      out, received_ib_multicast.packets);
}

static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
			   void *out)
{
	/* Traffic counters will be reported in
	 * their 64bit form via ib_pma_portcounters_ext by default.
	 */
	void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out,
				     counter_set);

#define MLX5_ASSIGN_PMA_CNTR(counter_var, counter_name)	{		\
	counter_var = MLX5_GET_BE(typeof(counter_var),			\
				  ib_port_cntrs_grp_data_layout,	\
				  out_pma, counter_name);		\
	}

	MLX5_ASSIGN_PMA_CNTR(pma_cnt->symbol_error_counter,
			     symbol_error_counter);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_error_recovery_counter,
			     link_error_recovery_counter);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_downed_counter,
			     link_downed_counter);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_errors,
			     port_rcv_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_remphys_errors,
			     port_rcv_remote_physical_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_switch_relay_errors,
			     port_rcv_switch_relay_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_discards,
			     port_xmit_discards);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_constraint_errors,
			     port_xmit_constraint_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_wait,
			     port_xmit_wait);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_constraint_errors,
			     port_rcv_constraint_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_overrun_errors,
			     link_overrun_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->vl15_dropped,
			     vl_15_dropped);
}

static int process_pma_cmd(struct mlx5_ib_dev *dev, u8 port_num,
			   const struct ib_mad *in_mad, struct ib_mad *out_mad)
{
	struct mlx5_core_dev *mdev;
	bool native_port = true;
	u8 mdev_port_num;
	void *out_cnt;
	int err;

	mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
	if (!mdev) {
		/* Fail to get the native port, likely due to 2nd port is still
		 * unaffiliated. In such case default to 1st port and attached
		 * PF device.
		 */
		native_port = false;
		mdev = dev->mdev;
		mdev_port_num = 1;
	}
	/* Declaring support of extended counters */
	if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
		struct ib_class_port_info cpi = {};

		cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
		memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
		err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
		goto done;
	}

	if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
		struct ib_pma_portcounters_ext *pma_cnt_ext =
			(struct ib_pma_portcounters_ext *)(out_mad->data + 40);
		int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);

		out_cnt = kvzalloc(sz, GFP_KERNEL);
		if (!out_cnt) {
			err = IB_MAD_RESULT_FAILURE;
			goto done;
		}

		err = mlx5_core_query_vport_counter(mdev, 0, 0, mdev_port_num,
						    out_cnt);
		if (!err)
			pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
	} else {
		struct ib_pma_portcounters *pma_cnt =
			(struct ib_pma_portcounters *)(out_mad->data + 40);
		int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);

		out_cnt = kvzalloc(sz, GFP_KERNEL);
		if (!out_cnt) {
			err = IB_MAD_RESULT_FAILURE;
			goto done;
		}

		err = mlx5_core_query_ib_ppcnt(mdev, mdev_port_num,
					       out_cnt, sz);
		if (!err)
			pma_cnt_assign(pma_cnt, out_cnt);
	}
	kvfree(out_cnt);
	err = err ? IB_MAD_RESULT_FAILURE :
		    IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
done:
	if (native_port)
		mlx5_ib_put_native_port_mdev(dev, port_num);
	return err;
}

int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
			const struct ib_wc *in_wc, const struct ib_grh *in_grh,
			const struct ib_mad *in, struct ib_mad *out,
			size_t *out_mad_size, u16 *out_mad_pkey_index)
{
	struct mlx5_ib_dev *dev = to_mdev(ibdev);
	u8 mgmt_class = in->mad_hdr.mgmt_class;
	u8 method = in->mad_hdr.method;
	u16 slid;
	int err;

	slid = in_wc ? ib_lid_cpu16(in_wc->slid) :
		       be16_to_cpu(IB_LID_PERMISSIVE);

	if (method == IB_MGMT_METHOD_TRAP && !slid)
		return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;

	switch (mgmt_class) {
	case IB_MGMT_CLASS_SUBN_LID_ROUTED:
	case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: {
		if (method != IB_MGMT_METHOD_GET &&
		    method != IB_MGMT_METHOD_SET &&
		    method != IB_MGMT_METHOD_TRAP_REPRESS)
			return IB_MAD_RESULT_SUCCESS;

		/* Don't process SMInfo queries -- the SMA can't handle them.
		 */
		if (in->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
			return IB_MAD_RESULT_SUCCESS;
	} break;
	case IB_MGMT_CLASS_PERF_MGMT:
		if (MLX5_CAP_GEN(dev->mdev, vport_counters) &&
		    method == IB_MGMT_METHOD_GET)
			return process_pma_cmd(dev, port_num, in, out);
		fallthrough;
	case MLX5_IB_VENDOR_CLASS1:
	case MLX5_IB_VENDOR_CLASS2:
	case IB_MGMT_CLASS_CONG_MGMT: {
		if (method != IB_MGMT_METHOD_GET &&
		    method != IB_MGMT_METHOD_SET)
			return IB_MAD_RESULT_SUCCESS;
	} break;
	default:
		return IB_MAD_RESULT_SUCCESS;
	}

	err = mlx5_MAD_IFC(to_mdev(ibdev), mad_flags & IB_MAD_IGNORE_MKEY,
			   mad_flags & IB_MAD_IGNORE_BKEY, port_num, in_wc,
			   in_grh, in, out);
	if (err)
		return IB_MAD_RESULT_FAILURE;

	/* set return bit in status of directed route responses */
	if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
		out->mad_hdr.status |= cpu_to_be16(1 << 15);

	if (method == IB_MGMT_METHOD_TRAP_REPRESS)
		/* no response for trap repress */
		return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;

	return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
}

int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;
	u16 packet_error;

	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
	in_mad->attr_mod = cpu_to_be32(port);

	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);

	packet_error = be16_to_cpu(out_mad->status);

	dev->mdev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
		MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;

out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

static int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
						 struct ib_smp *out_mad)
{
	struct ib_smp *in_mad = NULL;
	int err = -ENOMEM;

	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	if (!in_mad)
		return -ENOMEM;

	init_query_mad(in_mad);
	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;

	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
			   out_mad);

	kfree(in_mad);
	return err;
}

int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
					 __be64 *sys_image_guid)
{
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	if (!out_mad)
		return -ENOMEM;

	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	if (err)
		goto out;

	memcpy(sys_image_guid, out_mad->data + 4, 8);

out:
	kfree(out_mad);

	return err;
}

int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
				 u16 *max_pkeys)
{
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	if (!out_mad)
		return -ENOMEM;

	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	if (err)
		goto out;

	*max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));

out:
	kfree(out_mad);

	return err;
}

int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
				 u32 *vendor_id)
{
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	if (!out_mad)
		return -ENOMEM;

	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	if (err)
		goto out;

	*vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff;

out:
	kfree(out_mad);

	return err;
}

int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;

	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;

	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(node_guid, out_mad->data + 12, 8);
out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index,
			    u16 *pkey)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
	in_mad->attr_mod = cpu_to_be32(index / 32);

	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
			   out_mad);
	if (err)
		goto out;

	*pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);

out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
			    union ib_gid *gid)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
	in_mad->attr_mod = cpu_to_be32(port);

	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
			   out_mad);
	if (err)
		goto out;

	memcpy(gid->raw, out_mad->data + 8, 8);

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
	in_mad->attr_mod = cpu_to_be32(index / 8);

	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
			   out_mad);
	if (err)
		goto out;

	memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);

out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
			    struct ib_port_attr *props)
{
	struct mlx5_ib_dev *dev = to_mdev(ibdev);
	struct mlx5_core_dev *mdev = dev->mdev;
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int ext_active_speed;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	/* props being zeroed by the caller, avoid zeroing it here */

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
	in_mad->attr_mod = cpu_to_be32(port);

	err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
	if (err) {
		mlx5_ib_warn(dev, "err %d\n", err);
		goto out;
	}

	props->lid		= be16_to_cpup((__be16 *)(out_mad->data + 16));
	props->lmc		= out_mad->data[34] & 0x7;
	props->sm_lid		= be16_to_cpup((__be16 *)(out_mad->data + 18));
	props->sm_sl		= out_mad->data[36] & 0xf;
	props->state		= out_mad->data[32] & 0xf;
	props->phys_state	= out_mad->data[33] >> 4;
	props->port_cap_flags	= be32_to_cpup((__be32 *)(out_mad->data + 20));
	props->gid_tbl_len	= out_mad->data[50];
	props->max_msg_sz	= 1 << MLX5_CAP_GEN(mdev, log_max_msg);
	props->pkey_tbl_len	= mdev->port_caps[port - 1].pkey_table_len;
	props->bad_pkey_cntr	= be16_to_cpup((__be16 *)(out_mad->data + 46));
	props->qkey_viol_cntr	= be16_to_cpup((__be16 *)(out_mad->data + 48));
	props->active_width	= out_mad->data[31] & 0xf;
	props->active_speed	= out_mad->data[35] >> 4;
	props->max_mtu		= out_mad->data[41] & 0xf;
	props->active_mtu	= out_mad->data[36] >> 4;
	props->subnet_timeout	= out_mad->data[51] & 0x1f;
	props->max_vl_num	= out_mad->data[37] >> 4;
	props->init_type_reply	= out_mad->data[41] >> 4;

	if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) {
		props->port_cap_flags2 =
			be16_to_cpup((__be16 *)(out_mad->data + 60));

		if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP)
			props->active_width = out_mad->data[31] & 0x1f;
	}

	/* Check if extended speeds (EDR/FDR/...) are supported */
	if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
		ext_active_speed = out_mad->data[62] >> 4;

		switch (ext_active_speed) {
		case 1:
			props->active_speed = 16; /* FDR */
			break;
		case 2:
			props->active_speed = 32; /* EDR */
			break;
		case 4:
			if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
			    props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP)
				props->active_speed = IB_SPEED_HDR;
			break;
		}
	}

	/* If reported active speed is QDR, check if is FDR-10 */
	if (props->active_speed == 4) {
		if (mdev->port_caps[port - 1].ext_port_cap &
		    MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
			init_query_mad(in_mad);
			in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
			in_mad->attr_mod = cpu_to_be32(port);

			err = mlx5_MAD_IFC(dev, 1, 1, port,
					   NULL, NULL, in_mad, out_mad);
			if (err)
				goto out;

			/* Checking LinkSpeedActive for FDR-10 */
			if (out_mad->data[15] & 0x1)
				props->active_speed = 8;
		}
	}

out:
	kfree(in_mad);
	kfree(out_mad);

	return err;
}
Commit	Line	Data
e126ba97	1	/*
6cf0a15f	2	* Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
e126ba97 EC	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
3efd9a11	33	#include <linux/mlx5/vport.h>
e126ba97 EC	34	#include <rdma/ib_mad.h>
e126ba97 EC	35	#include <rdma/ib_smi.h>
3efd9a11	36	#include <rdma/ib_pma.h>
e126ba97	37	#include "mlx5_ib.h"
73f5a82b	38	#include "cmd.h"
e126ba97 EC	39
	40	enum {
	41	MLX5_IB_VENDOR_CLASS1 = 0x9,
	42	MLX5_IB_VENDOR_CLASS2 = 0xa
	43	};
	44
c43f1112 MG	45	static bool can_do_mad_ifc(struct mlx5_ib_dev *dev, u8 port_num,
	46	struct ib_mad *in_mad)
	47	{
	48	if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED &&
	49	in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
	50	return true;
	51	return dev->mdev->port_caps[port_num - 1].has_smi;
	52	}
	53
73f5a82b LR	54	static int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey,
	55	int ignore_bkey, u8 port, const struct ib_wc *in_wc,
	56	const struct ib_grh in_grh, const void in_mad,
	57	void *response_mad)
e126ba97 EC	58	{
	59	u8 op_modifier = 0;
	60
c43f1112 MG	61	if (!can_do_mad_ifc(dev, port, (struct ib_mad *)in_mad))
	62	return -EPERM;
	63
e126ba97 EC	64	/* Key check traps can't be generated unless we have in_wc to
	65	* tell us where to send the trap.
	66	*/
	67	if (ignore_mkey \|\| !in_wc)
	68	op_modifier \|= 0x1;
	69	if (ignore_bkey \|\| !in_wc)
	70	op_modifier \|= 0x2;
	71
73f5a82b LR	72	return mlx5_cmd_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier,
73f5a82b LR	73	port);
e126ba97 EC	74	}
e126ba97 EC	75
3efd9a11 MY	76	static void pma_cnt_ext_assign(struct ib_pma_portcounters_ext *pma_cnt_ext,
	77	void *out)
	78	{
	79	#define MLX5_SUM_CNT(p, cntr1, cntr2) \
	80	(MLX5_GET64(query_vport_counter_out, p, cntr1) + \
	81	MLX5_GET64(query_vport_counter_out, p, cntr2))
	82
	83	pma_cnt_ext->port_xmit_data =
	84	cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.octets,
	85	transmitted_ib_multicast.octets) >> 2);
00bf534f	86	pma_cnt_ext->port_rcv_data =
3efd9a11 MY	87	cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.octets,
	88	received_ib_multicast.octets) >> 2);
	89	pma_cnt_ext->port_xmit_packets =
	90	cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.packets,
	91	transmitted_ib_multicast.packets));
	92	pma_cnt_ext->port_rcv_packets =
	93	cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.packets,
	94	received_ib_multicast.packets));
	95	pma_cnt_ext->port_unicast_xmit_packets =
	96	MLX5_GET64_BE(query_vport_counter_out,
	97	out, transmitted_ib_unicast.packets);
	98	pma_cnt_ext->port_unicast_rcv_packets =
	99	MLX5_GET64_BE(query_vport_counter_out,
	100	out, received_ib_unicast.packets);
	101	pma_cnt_ext->port_multicast_xmit_packets =
	102	MLX5_GET64_BE(query_vport_counter_out,
	103	out, transmitted_ib_multicast.packets);
	104	pma_cnt_ext->port_multicast_rcv_packets =
	105	MLX5_GET64_BE(query_vport_counter_out,
	106	out, received_ib_multicast.packets);
	107	}
	108
	109	static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
	110	void *out)
	111	{
	112	/* Traffic counters will be reported in
	113	* their 64bit form via ib_pma_portcounters_ext by default.
	114	*/
	115	void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out,
	116	counter_set);
	117
	118	#define MLX5_ASSIGN_PMA_CNTR(counter_var, counter_name) { \
	119	counter_var = MLX5_GET_BE(typeof(counter_var), \
	120	ib_port_cntrs_grp_data_layout, \
	121	out_pma, counter_name); \
	122	}
	123
	124	MLX5_ASSIGN_PMA_CNTR(pma_cnt->symbol_error_counter,
	125	symbol_error_counter);
	126	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_error_recovery_counter,
	127	link_error_recovery_counter);
	128	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_downed_counter,
	129	link_downed_counter);
	130	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_errors,
	131	port_rcv_errors);
	132	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_remphys_errors,
	133	port_rcv_remote_physical_errors);
	134	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_switch_relay_errors,
	135	port_rcv_switch_relay_errors);
	136	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_discards,
	137	port_xmit_discards);
	138	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_constraint_errors,
	139	port_xmit_constraint_errors);
133bea04 TW	140	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_wait,
133bea04 TW	141	port_xmit_wait);
3efd9a11 MY	142	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_constraint_errors,
	143	port_rcv_constraint_errors);
	144	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_overrun_errors,
	145	link_overrun_errors);
	146	MLX5_ASSIGN_PMA_CNTR(pma_cnt->vl15_dropped,
	147	vl_15_dropped);
	148	}
	149
2f40cf30	150	static int process_pma_cmd(struct mlx5_ib_dev *dev, u8 port_num,
3efd9a11 MY	151	const struct ib_mad in_mad, struct ib_mad out_mad)
3efd9a11 MY	152	{
2f40cf30 PP	153	struct mlx5_core_dev *mdev;
	154	bool native_port = true;
	155	u8 mdev_port_num;
3efd9a11	156	void *out_cnt;
2f40cf30	157	int err;
3efd9a11	158
2f40cf30 PP	159	mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
	160	if (!mdev) {
	161	/* Fail to get the native port, likely due to 2nd port is still
	162	* unaffiliated. In such case default to 1st port and attached
	163	* PF device.
	164	*/
	165	native_port = false;
	166	mdev = dev->mdev;
	167	mdev_port_num = 1;
	168	}
4edf8d5c	169	/* Declaring support of extended counters */
3efd9a11 MY	170	if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
	171	struct ib_class_port_info cpi = {};
	172
	173	cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
	174	memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
2f40cf30 PP	175	err = IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_REPLY;
2f40cf30 PP	176	goto done;
3efd9a11 MY	177	}
	178
	179	if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
	180	struct ib_pma_portcounters_ext *pma_cnt_ext =
	181	(struct ib_pma_portcounters_ext *)(out_mad->data + 40);
	182	int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
	183
1b9a07ee	184	out_cnt = kvzalloc(sz, GFP_KERNEL);
2f40cf30 PP	185	if (!out_cnt) {
	186	err = IB_MAD_RESULT_FAILURE;
	187	goto done;
	188	}
3efd9a11	189
5d1c9a11 LR	190	err = mlx5_core_query_vport_counter(mdev, 0, 0, mdev_port_num,
5d1c9a11 LR	191	out_cnt);
3efd9a11 MY	192	if (!err)
	193	pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
	194	} else {
	195	struct ib_pma_portcounters *pma_cnt =
	196	(struct ib_pma_portcounters *)(out_mad->data + 40);
	197	int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
	198
1b9a07ee	199	out_cnt = kvzalloc(sz, GFP_KERNEL);
2f40cf30 PP	200	if (!out_cnt) {
	201	err = IB_MAD_RESULT_FAILURE;
	202	goto done;
	203	}
3efd9a11	204
2f40cf30	205	err = mlx5_core_query_ib_ppcnt(mdev, mdev_port_num,
3efd9a11 MY	206	out_cnt, sz);
	207	if (!err)
	208	pma_cnt_assign(pma_cnt, out_cnt);
2f40cf30	209	}
3efd9a11	210	kvfree(out_cnt);
2f40cf30 PP	211	err = err ? IB_MAD_RESULT_FAILURE :
	212	IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_REPLY;
	213	done:
	214	if (native_port)
	215	mlx5_ib_put_native_port_mdev(dev, port_num);
	216	return err;
3efd9a11 MY	217	}
	218
	219	int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
	220	const struct ib_wc in_wc, const struct ib_grh in_grh,
e26e7b88 LR	221	const struct ib_mad in, struct ib_mad out,
e26e7b88 LR	222	size_t out_mad_size, u16 out_mad_pkey_index)
3efd9a11 MY	223	{
3efd9a11 MY	224	struct mlx5_ib_dev *dev = to_mdev(ibdev);
e26e7b88 LR	225	u8 mgmt_class = in->mad_hdr.mgmt_class;
e26e7b88 LR	226	u8 method = in->mad_hdr.method;
ffa2fd13 LR	227	u16 slid;
ffa2fd13 LR	228	int err;
3efd9a11	229
ffa2fd13 LR	230	slid = in_wc ? ib_lid_cpu16(in_wc->slid) :
	231	be16_to_cpu(IB_LID_PERMISSIVE);
	232
	233	if (method == IB_MGMT_METHOD_TRAP && !slid)
	234	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_CONSUMED;
	235
	236	switch (mgmt_class) {
	237	case IB_MGMT_CLASS_SUBN_LID_ROUTED:
	238	case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: {
	239	if (method != IB_MGMT_METHOD_GET &&
	240	method != IB_MGMT_METHOD_SET &&
	241	method != IB_MGMT_METHOD_TRAP_REPRESS)
	242	return IB_MAD_RESULT_SUCCESS;
	243
	244	/* Don't process SMInfo queries -- the SMA can't handle them.
	245	*/
e26e7b88	246	if (in->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
ffa2fd13 LR	247	return IB_MAD_RESULT_SUCCESS;
	248	} break;
	249	case IB_MGMT_CLASS_PERF_MGMT:
	250	if (MLX5_CAP_GEN(dev->mdev, vport_counters) &&
	251	method == IB_MGMT_METHOD_GET)
e26e7b88	252	return process_pma_cmd(dev, port_num, in, out);
df561f66	253	fallthrough;
ffa2fd13	254	case MLX5_IB_VENDOR_CLASS1:
ffa2fd13 LR	255	case MLX5_IB_VENDOR_CLASS2:
	256	case IB_MGMT_CLASS_CONG_MGMT: {
	257	if (method != IB_MGMT_METHOD_GET &&
	258	method != IB_MGMT_METHOD_SET)
	259	return IB_MAD_RESULT_SUCCESS;
	260	} break;
	261	default:
	262	return IB_MAD_RESULT_SUCCESS;
3efd9a11	263	}
ffa2fd13	264
e26e7b88 LR	265	err = mlx5_MAD_IFC(to_mdev(ibdev), mad_flags & IB_MAD_IGNORE_MKEY,
	266	mad_flags & IB_MAD_IGNORE_BKEY, port_num, in_wc,
	267	in_grh, in, out);
ffa2fd13 LR	268	if (err)
	269	return IB_MAD_RESULT_FAILURE;
	270
	271	/* set return bit in status of directed route responses */
	272	if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
e26e7b88	273	out->mad_hdr.status \|= cpu_to_be16(1 << 15);
ffa2fd13 LR	274
	275	if (method == IB_MGMT_METHOD_TRAP_REPRESS)
	276	/* no response for trap repress */
	277	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_CONSUMED;
	278
	279	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_REPLY;
3efd9a11 MY	280	}
3efd9a11 MY	281
e126ba97 EC	282	int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
	283	{
	284	struct ib_smp *in_mad = NULL;
	285	struct ib_smp *out_mad = NULL;
	286	int err = -ENOMEM;
	287	u16 packet_error;
	288
	289	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	290	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	291	if (!in_mad \|\| !out_mad)
	292	goto out;
	293
	294	init_query_mad(in_mad);
	295	in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
	296	in_mad->attr_mod = cpu_to_be32(port);
	297
	298	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	299
	300	packet_error = be16_to_cpu(out_mad->status);
	301
938fe83c	302	dev->mdev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
e126ba97 EC	303	MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
	304
	305	out:
	306	kfree(in_mad);
	307	kfree(out_mad);
	308	return err;
	309	}
1b5daf11	310
559a3eac PP	311	static int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
559a3eac PP	312	struct ib_smp *out_mad)
1b5daf11 MD	313	{
	314	struct ib_smp *in_mad = NULL;
	315	int err = -ENOMEM;
	316
	317	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	318	if (!in_mad)
	319	return -ENOMEM;
	320
	321	init_query_mad(in_mad);
	322	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
	323
	324	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
	325	out_mad);
	326
	327	kfree(in_mad);
	328	return err;
	329	}
	330
	331	int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
	332	__be64 *sys_image_guid)
	333	{
	334	struct ib_smp *out_mad = NULL;
	335	int err = -ENOMEM;
	336
	337	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	338	if (!out_mad)
	339	return -ENOMEM;
	340
	341	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	342	if (err)
	343	goto out;
	344
	345	memcpy(sys_image_guid, out_mad->data + 4, 8);
	346
	347	out:
	348	kfree(out_mad);
	349
	350	return err;
	351	}
	352
	353	int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
	354	u16 *max_pkeys)
	355	{
	356	struct ib_smp *out_mad = NULL;
	357	int err = -ENOMEM;
	358
	359	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	360	if (!out_mad)
	361	return -ENOMEM;
	362
	363	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	364	if (err)
	365	goto out;
	366
	367	max_pkeys = be16_to_cpup((__be16 )(out_mad->data + 28));
	368
	369	out:
	370	kfree(out_mad);
	371
	372	return err;
	373	}
	374
	375	int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
	376	u32 *vendor_id)
377	{
378	struct ib_smp *out_mad = NULL;
379	int err = -ENOMEM;
380
381	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
382	if (!out_mad)
383	return -ENOMEM;
384
385	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
386	if (err)
387	goto out;
388
389	vendor_id = be32_to_cpup((__be32 )(out_mad->data + 36)) & 0xffff;
390
391	out:
392	kfree(out_mad);
393
394	return err;
395	}
396
397	int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev dev, char node_desc)
398	{
399	struct ib_smp *in_mad = NULL;
400	struct ib_smp *out_mad = NULL;
401	int err = -ENOMEM;
402
403	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
404	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
405	if (!in_mad \|\| !out_mad)
406	goto out;
407
408	init_query_mad(in_mad);
409	in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
410
411	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
412	if (err)
413	goto out;
414
bd99fdea	415	memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1b5daf11 MD	416	out:
	417	kfree(in_mad);
	418	kfree(out_mad);
	419	return err;
	420	}
	421
	422	int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev dev, __be64 node_guid)
	423	{
	424	struct ib_smp *in_mad = NULL;
	425	struct ib_smp *out_mad = NULL;
	426	int err = -ENOMEM;
	427
	428	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	429	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	430	if (!in_mad \|\| !out_mad)
	431	goto out;
	432
	433	init_query_mad(in_mad);
	434	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
	435
	436	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	437	if (err)
	438	goto out;
	439
	440	memcpy(node_guid, out_mad->data + 12, 8);
	441	out:
	442	kfree(in_mad);
	443	kfree(out_mad);
	444	return err;
	445	}
	446
	447	int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index,
	448	u16 *pkey)
	449	{
	450	struct ib_smp *in_mad = NULL;
	451	struct ib_smp *out_mad = NULL;
	452	int err = -ENOMEM;
	453
	454	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	455	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	456	if (!in_mad \|\| !out_mad)
	457	goto out;
	458
	459	init_query_mad(in_mad);
	460	in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
	461	in_mad->attr_mod = cpu_to_be32(index / 32);
	462
	463	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
	464	out_mad);
	465	if (err)
	466	goto out;
	467
	468	pkey = be16_to_cpu(((__be16 )out_mad->data)[index % 32]);
	469
	470	out:
	471	kfree(in_mad);
	472	kfree(out_mad);
	473	return err;
	474	}
	475
	476	int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
	477	union ib_gid *gid)
	478	{
	479	struct ib_smp *in_mad = NULL;
480	struct ib_smp *out_mad = NULL;
481	int err = -ENOMEM;
482
483	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
484	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
485	if (!in_mad \|\| !out_mad)
486	goto out;
487
488	init_query_mad(in_mad);
489	in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
490	in_mad->attr_mod = cpu_to_be32(port);
491
492	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
493	out_mad);
494	if (err)
495	goto out;
496
497	memcpy(gid->raw, out_mad->data + 8, 8);
498
499	init_query_mad(in_mad);
500	in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
501	in_mad->attr_mod = cpu_to_be32(index / 8);
502
503	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
504	out_mad);
505	if (err)
506	goto out;
507
508	memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
509
510	out:
511	kfree(in_mad);
512	kfree(out_mad);
513	return err;
514	}
515
516	int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
517	struct ib_port_attr *props)
518	{
519	struct mlx5_ib_dev *dev = to_mdev(ibdev);
520	struct mlx5_core_dev *mdev = dev->mdev;
521	struct ib_smp *in_mad = NULL;
522	struct ib_smp *out_mad = NULL;
523	int ext_active_speed;
524	int err = -ENOMEM;
525
1b5daf11 MD	526	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	527	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	528	if (!in_mad \|\| !out_mad)
	529	goto out;
	530
c4550c63	531	/* props being zeroed by the caller, avoid zeroing it here */
1b5daf11 MD	532
	533	init_query_mad(in_mad);
	534	in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
	535	in_mad->attr_mod = cpu_to_be32(port);
	536
	537	err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
	538	if (err) {
	539	mlx5_ib_warn(dev, "err %d\n", err);
	540	goto out;
	541	}
	542
	543	props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
	544	props->lmc = out_mad->data[34] & 0x7;
	545	props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
	546	props->sm_sl = out_mad->data[36] & 0xf;
	547	props->state = out_mad->data[32] & 0xf;
	548	props->phys_state = out_mad->data[33] >> 4;
	549	props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
	550	props->gid_tbl_len = out_mad->data[50];
	551	props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
	552	props->pkey_tbl_len = mdev->port_caps[port - 1].pkey_table_len;
	553	props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
	554	props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
	555	props->active_width = out_mad->data[31] & 0xf;
	556	props->active_speed = out_mad->data[35] >> 4;
	557	props->max_mtu = out_mad->data[41] & 0xf;
	558	props->active_mtu = out_mad->data[36] >> 4;
	559	props->subnet_timeout = out_mad->data[51] & 0x1f;
	560	props->max_vl_num = out_mad->data[37] >> 4;
	561	props->init_type_reply = out_mad->data[41] >> 4;
	562
d764970b	563	if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) {
4106a758 MG	564	props->port_cap_flags2 =
	565	be16_to_cpup((__be16 *)(out_mad->data + 60));
	566
d764970b MG	567	if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP)
	568	props->active_width = out_mad->data[31] & 0x1f;
	569	}
	570
1b5daf11 MD	571	/* Check if extended speeds (EDR/FDR/...) are supported */
	572	if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
	573	ext_active_speed = out_mad->data[62] >> 4;
	574
	575	switch (ext_active_speed) {
	576	case 1:
	577	props->active_speed = 16; /* FDR */
	578	break;
	579	case 2:
	580	props->active_speed = 32; /* EDR */
	581	break;
b874155a MG	582	case 4:
	583	if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
	584	props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP)
	585	props->active_speed = IB_SPEED_HDR;
	586	break;
1b5daf11 MD	587	}
	588	}
	589
	590	/* If reported active speed is QDR, check if is FDR-10 */
	591	if (props->active_speed == 4) {
	592	if (mdev->port_caps[port - 1].ext_port_cap &
	593	MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
	594	init_query_mad(in_mad);
	595	in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
	596	in_mad->attr_mod = cpu_to_be32(port);
	597
	598	err = mlx5_MAD_IFC(dev, 1, 1, port,
	599	NULL, NULL, in_mad, out_mad);
	600	if (err)
	601	goto out;
	602
	603	/* Checking LinkSpeedActive for FDR-10 */
	604	if (out_mad->data[15] & 0x1)
	605	props->active_speed = 8;
	606	}
	607	}
	608
	609	out:
	610	kfree(in_mad);
	611	kfree(out_mad);
	612
	613	return err;
	614	}