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

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

static int 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_mad, struct ib_mad *out_mad)
{
	u16 slid;
	int err;

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

	if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0)
		return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;

	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) {
		if (in_mad->mad_hdr.method   != IB_MGMT_METHOD_GET &&
		    in_mad->mad_hdr.method   != IB_MGMT_METHOD_SET &&
		    in_mad->mad_hdr.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->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
			return IB_MAD_RESULT_SUCCESS;
	} else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT ||
		   in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1   ||
		   in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2   ||
		   in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) {
		if (in_mad->mad_hdr.method  != IB_MGMT_METHOD_GET &&
		    in_mad->mad_hdr.method  != IB_MGMT_METHOD_SET)
			return IB_MAD_RESULT_SUCCESS;
	} else {
		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_mad, out_mad);
	if (err)
		return IB_MAD_RESULT_FAILURE;

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

	if (in_mad->mad_hdr.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;
}

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_core_dev *mdev, u8 port_num,
			   const struct ib_mad *in_mad, struct ib_mad *out_mad)
{
	int err;
	void *out_cnt;

	/* 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));
		return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
	}

	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)
			return IB_MAD_RESULT_FAILURE;

		err = mlx5_core_query_vport_counter(mdev, 0, 0,
						    port_num, out_cnt, sz);
		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)
			return IB_MAD_RESULT_FAILURE;

		err = mlx5_core_query_ib_ppcnt(mdev, port_num,
					       out_cnt, sz);
		if (!err)
			pma_cnt_assign(pma_cnt, out_cnt);
		}

	kvfree(out_cnt);
	if (err)
		return IB_MAD_RESULT_FAILURE;

	return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
}

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_hdr *in, size_t in_mad_size,
			struct ib_mad_hdr *out, size_t *out_mad_size,
			u16 *out_mad_pkey_index)
{
	struct mlx5_ib_dev *dev = to_mdev(ibdev);
	const struct ib_mad *in_mad = (const struct ib_mad *)in;
	struct ib_mad *out_mad = (struct ib_mad *)out;
	struct mlx5_core_dev *mdev;
	u8 mdev_port_num;
	int ret;

	if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
			 *out_mad_size != sizeof(*out_mad)))
		return IB_MAD_RESULT_FAILURE;

	memset(out_mad->data, 0, sizeof(out_mad->data));

	mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
	if (!mdev)
		return IB_MAD_RESULT_FAILURE;

	if (MLX5_CAP_GEN(mdev, vport_counters) &&
	    in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT &&
	    in_mad->mad_hdr.method == IB_MGMT_METHOD_GET) {
		ret = process_pma_cmd(mdev, mdev_port_num, in_mad, out_mad);
	} else {
		ret =  process_mad(ibdev, mad_flags, port_num, in_wc, in_grh,
				   in_mad, out_mad);
	}
	mlx5_ib_put_native_port_mdev(dev, port_num);
	return ret;
}

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;
}

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;

	if (port < 1 || port > dev->num_ports) {
		mlx5_ib_warn(dev, "invalid port number %d\n", port);
		return -EINVAL;
	}

	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;

	/* 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;
		}
	}

	/* 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
	33	#include <linux/mlx5/cmd.h>
3efd9a11	34	#include <linux/mlx5/vport.h>
e126ba97 EC	35	#include <rdma/ib_mad.h>
e126ba97 EC	36	#include <rdma/ib_smi.h>
3efd9a11	37	#include <rdma/ib_pma.h>
e126ba97 EC	38	#include "mlx5_ib.h"
	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
e126ba97	54	int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
a97e2d86 IW	55	u8 port, const struct ib_wc in_wc, const struct ib_grh in_grh,
a97e2d86 IW	56	const void in_mad, void response_mad)
e126ba97 EC	57	{
	58	u8 op_modifier = 0;
	59
c43f1112 MG	60	if (!can_do_mad_ifc(dev, port, (struct ib_mad *)in_mad))
	61	return -EPERM;
	62
e126ba97 EC	63	/* Key check traps can't be generated unless we have in_wc to
	64	* tell us where to send the trap.
	65	*/
	66	if (ignore_mkey \|\| !in_wc)
	67	op_modifier \|= 0x1;
	68	if (ignore_bkey \|\| !in_wc)
	69	op_modifier \|= 0x2;
	70
9603b61d	71	return mlx5_core_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier, port);
e126ba97 EC	72	}
e126ba97 EC	73
3efd9a11 MY	74	static int process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
	75	const struct ib_wc in_wc, const struct ib_grh in_grh,
	76	const struct ib_mad in_mad, struct ib_mad out_mad)
e126ba97 EC	77	{
	78	u16 slid;
	79	int err;
	80
62ede777	81	slid = in_wc ? ib_lid_cpu16(in_wc->slid) : be16_to_cpu(IB_LID_PERMISSIVE);
e126ba97 EC	82
	83	if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0)
	84	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_CONSUMED;
	85
	86	if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED \|\|
	87	in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
	88	if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
	89	in_mad->mad_hdr.method != IB_MGMT_METHOD_SET &&
	90	in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS)
	91	return IB_MAD_RESULT_SUCCESS;
	92
	93	/* Don't process SMInfo queries -- the SMA can't handle them.
	94	*/
	95	if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
	96	return IB_MAD_RESULT_SUCCESS;
	97	} else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT \|\|
	98	in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1 \|\|
	99	in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2 \|\|
	100	in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) {
	101	if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
	102	in_mad->mad_hdr.method != IB_MGMT_METHOD_SET)
	103	return IB_MAD_RESULT_SUCCESS;
	104	} else {
	105	return IB_MAD_RESULT_SUCCESS;
	106	}
	107
	108	err = mlx5_MAD_IFC(to_mdev(ibdev),
	109	mad_flags & IB_MAD_IGNORE_MKEY,
	110	mad_flags & IB_MAD_IGNORE_BKEY,
	111	port_num, in_wc, in_grh, in_mad, out_mad);
	112	if (err)
	113	return IB_MAD_RESULT_FAILURE;
	114
	115	/* set return bit in status of directed route responses */
	116	if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
	117	out_mad->mad_hdr.status \|= cpu_to_be16(1 << 15);
	118
	119	if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS)
	120	/* no response for trap repress */
	121	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_CONSUMED;
	122
	123	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_REPLY;
	124	}
	125
3efd9a11 MY	126	static void pma_cnt_ext_assign(struct ib_pma_portcounters_ext *pma_cnt_ext,
	127	void *out)
	128	{
	129	#define MLX5_SUM_CNT(p, cntr1, cntr2) \
	130	(MLX5_GET64(query_vport_counter_out, p, cntr1) + \
	131	MLX5_GET64(query_vport_counter_out, p, cntr2))
	132
	133	pma_cnt_ext->port_xmit_data =
	134	cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.octets,
	135	transmitted_ib_multicast.octets) >> 2);
00bf534f	136	pma_cnt_ext->port_rcv_data =
3efd9a11 MY	137	cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.octets,
	138	received_ib_multicast.octets) >> 2);
	139	pma_cnt_ext->port_xmit_packets =
	140	cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.packets,
	141	transmitted_ib_multicast.packets));
	142	pma_cnt_ext->port_rcv_packets =
	143	cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.packets,
	144	received_ib_multicast.packets));
	145	pma_cnt_ext->port_unicast_xmit_packets =
	146	MLX5_GET64_BE(query_vport_counter_out,
	147	out, transmitted_ib_unicast.packets);
	148	pma_cnt_ext->port_unicast_rcv_packets =
	149	MLX5_GET64_BE(query_vport_counter_out,
	150	out, received_ib_unicast.packets);
	151	pma_cnt_ext->port_multicast_xmit_packets =
	152	MLX5_GET64_BE(query_vport_counter_out,
	153	out, transmitted_ib_multicast.packets);
	154	pma_cnt_ext->port_multicast_rcv_packets =
	155	MLX5_GET64_BE(query_vport_counter_out,
	156	out, received_ib_multicast.packets);
	157	}
	158
	159	static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
	160	void *out)
	161	{
	162	/* Traffic counters will be reported in
	163	* their 64bit form via ib_pma_portcounters_ext by default.
	164	*/
	165	void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out,
	166	counter_set);
	167
	168	#define MLX5_ASSIGN_PMA_CNTR(counter_var, counter_name) { \
	169	counter_var = MLX5_GET_BE(typeof(counter_var), \
	170	ib_port_cntrs_grp_data_layout, \
	171	out_pma, counter_name); \
	172	}
	173
	174	MLX5_ASSIGN_PMA_CNTR(pma_cnt->symbol_error_counter,
	175	symbol_error_counter);
	176	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_error_recovery_counter,
	177	link_error_recovery_counter);
	178	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_downed_counter,
	179	link_downed_counter);
	180	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_errors,
	181	port_rcv_errors);
	182	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_remphys_errors,
	183	port_rcv_remote_physical_errors);
	184	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_switch_relay_errors,
	185	port_rcv_switch_relay_errors);
	186	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_discards,
	187	port_xmit_discards);
	188	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_constraint_errors,
	189	port_xmit_constraint_errors);
133bea04 TW	190	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_wait,
133bea04 TW	191	port_xmit_wait);
3efd9a11 MY	192	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_constraint_errors,
	193	port_rcv_constraint_errors);
	194	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_overrun_errors,
	195	link_overrun_errors);
	196	MLX5_ASSIGN_PMA_CNTR(pma_cnt->vl15_dropped,
	197	vl_15_dropped);
	198	}
	199
212f2a87	200	static int process_pma_cmd(struct mlx5_core_dev *mdev, u8 port_num,
3efd9a11 MY	201	const struct ib_mad in_mad, struct ib_mad out_mad)
3efd9a11 MY	202	{
3efd9a11 MY	203	int err;
	204	void *out_cnt;
	205
4edf8d5c	206	/* Declaring support of extended counters */
3efd9a11 MY	207	if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
	208	struct ib_class_port_info cpi = {};
	209
	210	cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
	211	memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
	212	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_REPLY;
	213	}
	214
	215	if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
	216	struct ib_pma_portcounters_ext *pma_cnt_ext =
	217	(struct ib_pma_portcounters_ext *)(out_mad->data + 40);
	218	int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
	219
1b9a07ee	220	out_cnt = kvzalloc(sz, GFP_KERNEL);
3efd9a11 MY	221	if (!out_cnt)
	222	return IB_MAD_RESULT_FAILURE;
	223
212f2a87	224	err = mlx5_core_query_vport_counter(mdev, 0, 0,
3efd9a11 MY	225	port_num, out_cnt, sz);
	226	if (!err)
	227	pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
	228	} else {
	229	struct ib_pma_portcounters *pma_cnt =
	230	(struct ib_pma_portcounters *)(out_mad->data + 40);
	231	int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
	232
1b9a07ee	233	out_cnt = kvzalloc(sz, GFP_KERNEL);
3efd9a11 MY	234	if (!out_cnt)
	235	return IB_MAD_RESULT_FAILURE;
	236
212f2a87	237	err = mlx5_core_query_ib_ppcnt(mdev, port_num,
3efd9a11 MY	238	out_cnt, sz);
	239	if (!err)
	240	pma_cnt_assign(pma_cnt, out_cnt);
	241	}
	242
	243	kvfree(out_cnt);
	244	if (err)
	245	return IB_MAD_RESULT_FAILURE;
	246
	247	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_REPLY;
	248	}
	249
	250	int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
	251	const struct ib_wc in_wc, const struct ib_grh in_grh,
	252	const struct ib_mad_hdr *in, size_t in_mad_size,
	253	struct ib_mad_hdr out, size_t out_mad_size,
	254	u16 *out_mad_pkey_index)
	255	{
	256	struct mlx5_ib_dev *dev = to_mdev(ibdev);
3efd9a11 MY	257	const struct ib_mad in_mad = (const struct ib_mad )in;
3efd9a11 MY	258	struct ib_mad out_mad = (struct ib_mad )out;
212f2a87 DJ	259	struct mlx5_core_dev *mdev;
	260	u8 mdev_port_num;
	261	int ret;
3efd9a11 MY	262
	263	if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) \|\|
	264	out_mad_size != sizeof(out_mad)))
	265	return IB_MAD_RESULT_FAILURE;
	266
	267	memset(out_mad->data, 0, sizeof(out_mad->data));
	268
212f2a87 DJ	269	mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
	270	if (!mdev)
	271	return IB_MAD_RESULT_FAILURE;
	272
3efd9a11 MY	273	if (MLX5_CAP_GEN(mdev, vport_counters) &&
	274	in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT &&
	275	in_mad->mad_hdr.method == IB_MGMT_METHOD_GET) {
212f2a87	276	ret = process_pma_cmd(mdev, mdev_port_num, in_mad, out_mad);
3efd9a11	277	} else {
212f2a87	278	ret = process_mad(ibdev, mad_flags, port_num, in_wc, in_grh,
3efd9a11 MY	279	in_mad, out_mad);
3efd9a11 MY	280	}
212f2a87 DJ	281	mlx5_ib_put_native_port_mdev(dev, port_num);
212f2a87 DJ	282	return ret;
3efd9a11 MY	283	}
3efd9a11 MY	284
e126ba97 EC	285	int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
	286	{
	287	struct ib_smp *in_mad = NULL;
	288	struct ib_smp *out_mad = NULL;
	289	int err = -ENOMEM;
	290	u16 packet_error;
	291
	292	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	293	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	294	if (!in_mad \|\| !out_mad)
	295	goto out;
	296
	297	init_query_mad(in_mad);
	298	in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
	299	in_mad->attr_mod = cpu_to_be32(port);
	300
	301	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	302
	303	packet_error = be16_to_cpu(out_mad->status);
	304
938fe83c	305	dev->mdev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
e126ba97 EC	306	MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
	307
	308	out:
	309	kfree(in_mad);
	310	kfree(out_mad);
	311	return err;
	312	}
1b5daf11 MD	313
	314	int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
	315	struct ib_smp *out_mad)
	316	{
	317	struct ib_smp *in_mad = NULL;
	318	int err = -ENOMEM;
	319
	320	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	321	if (!in_mad)
	322	return -ENOMEM;
	323
	324	init_query_mad(in_mad);
	325	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
	326
	327	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
	328	out_mad);
	329
	330	kfree(in_mad);
	331	return err;
	332	}
	333
	334	int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
	335	__be64 *sys_image_guid)
	336	{
	337	struct ib_smp *out_mad = NULL;
	338	int err = -ENOMEM;
	339
	340	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	341	if (!out_mad)
	342	return -ENOMEM;
	343
	344	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	345	if (err)
	346	goto out;
	347
	348	memcpy(sys_image_guid, out_mad->data + 4, 8);
	349
	350	out:
	351	kfree(out_mad);
	352
	353	return err;
	354	}
	355
	356	int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
	357	u16 *max_pkeys)
	358	{
	359	struct ib_smp *out_mad = NULL;
	360	int err = -ENOMEM;
	361
	362	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	363	if (!out_mad)
	364	return -ENOMEM;
	365
	366	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	367	if (err)
	368	goto out;
	369
	370	max_pkeys = be16_to_cpup((__be16 )(out_mad->data + 28));
	371
	372	out:
	373	kfree(out_mad);
	374
	375	return err;
	376	}
377
378	int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
379	u32 *vendor_id)
380	{
381	struct ib_smp *out_mad = NULL;
382	int err = -ENOMEM;
383
384	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
385	if (!out_mad)
386	return -ENOMEM;
387
388	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
389	if (err)
390	goto out;
391
392	vendor_id = be32_to_cpup((__be32 )(out_mad->data + 36)) & 0xffff;
393
394	out:
395	kfree(out_mad);
396
397	return err;
398	}
399
400	int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev dev, char node_desc)
401	{
402	struct ib_smp *in_mad = NULL;
403	struct ib_smp *out_mad = NULL;
404	int err = -ENOMEM;
405
406	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
407	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
408	if (!in_mad \|\| !out_mad)
409	goto out;
410
411	init_query_mad(in_mad);
412	in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
413
414	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
415	if (err)
416	goto out;
417
bd99fdea	418	memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1b5daf11 MD	419	out:
	420	kfree(in_mad);
	421	kfree(out_mad);
	422	return err;
	423	}
	424
	425	int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev dev, __be64 node_guid)
	426	{
	427	struct ib_smp *in_mad = NULL;
	428	struct ib_smp *out_mad = NULL;
	429	int err = -ENOMEM;
	430
	431	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	432	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	433	if (!in_mad \|\| !out_mad)
	434	goto out;
	435
	436	init_query_mad(in_mad);
	437	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
	438
	439	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	440	if (err)
	441	goto out;
	442
	443	memcpy(node_guid, out_mad->data + 12, 8);
	444	out:
	445	kfree(in_mad);
	446	kfree(out_mad);
	447	return err;
	448	}
	449
	450	int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index,
	451	u16 *pkey)
	452	{
	453	struct ib_smp *in_mad = NULL;
	454	struct ib_smp *out_mad = NULL;
	455	int err = -ENOMEM;
	456
	457	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	458	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	459	if (!in_mad \|\| !out_mad)
	460	goto out;
	461
	462	init_query_mad(in_mad);
	463	in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
	464	in_mad->attr_mod = cpu_to_be32(index / 32);
	465
	466	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
	467	out_mad);
	468	if (err)
	469	goto out;
	470
	471	pkey = be16_to_cpu(((__be16 )out_mad->data)[index % 32]);
	472
	473	out:
	474	kfree(in_mad);
	475	kfree(out_mad);
	476	return err;
	477	}
	478
	479	int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
	480	union ib_gid *gid)
	481	{
	482	struct ib_smp *in_mad = NULL;
483	struct ib_smp *out_mad = NULL;
484	int err = -ENOMEM;
485
486	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
487	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
488	if (!in_mad \|\| !out_mad)
489	goto out;
490
491	init_query_mad(in_mad);
492	in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
493	in_mad->attr_mod = cpu_to_be32(port);
494
495	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
496	out_mad);
497	if (err)
498	goto out;
499
500	memcpy(gid->raw, out_mad->data + 8, 8);
501
502	init_query_mad(in_mad);
503	in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
504	in_mad->attr_mod = cpu_to_be32(index / 8);
505
506	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
507	out_mad);
508	if (err)
509	goto out;
510
511	memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
512
513	out:
514	kfree(in_mad);
515	kfree(out_mad);
516	return err;
517	}
518
519	int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
520	struct ib_port_attr *props)
521	{
522	struct mlx5_ib_dev *dev = to_mdev(ibdev);
523	struct mlx5_core_dev *mdev = dev->mdev;
524	struct ib_smp *in_mad = NULL;
525	struct ib_smp *out_mad = NULL;
526	int ext_active_speed;
527	int err = -ENOMEM;
528
508562d6	529	if (port < 1 \|\| port > dev->num_ports) {
1b5daf11 MD	530	mlx5_ib_warn(dev, "invalid port number %d\n", port);
	531	return -EINVAL;
	532	}
	533
	534	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	535	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	536	if (!in_mad \|\| !out_mad)
	537	goto out;
	538
c4550c63	539	/* props being zeroed by the caller, avoid zeroing it here */
1b5daf11 MD	540
	541	init_query_mad(in_mad);
	542	in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
	543	in_mad->attr_mod = cpu_to_be32(port);
	544
	545	err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
	546	if (err) {
	547	mlx5_ib_warn(dev, "err %d\n", err);
	548	goto out;
	549	}
	550
	551	props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
	552	props->lmc = out_mad->data[34] & 0x7;
	553	props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
	554	props->sm_sl = out_mad->data[36] & 0xf;
	555	props->state = out_mad->data[32] & 0xf;
	556	props->phys_state = out_mad->data[33] >> 4;
	557	props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
	558	props->gid_tbl_len = out_mad->data[50];
	559	props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
	560	props->pkey_tbl_len = mdev->port_caps[port - 1].pkey_table_len;
	561	props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
	562	props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
	563	props->active_width = out_mad->data[31] & 0xf;
	564	props->active_speed = out_mad->data[35] >> 4;
	565	props->max_mtu = out_mad->data[41] & 0xf;
	566	props->active_mtu = out_mad->data[36] >> 4;
	567	props->subnet_timeout = out_mad->data[51] & 0x1f;
	568	props->max_vl_num = out_mad->data[37] >> 4;
	569	props->init_type_reply = out_mad->data[41] >> 4;
	570
	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;
	582	}
	583	}
	584
	585	/* If reported active speed is QDR, check if is FDR-10 */
	586	if (props->active_speed == 4) {
	587	if (mdev->port_caps[port - 1].ext_port_cap &
	588	MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
	589	init_query_mad(in_mad);
	590	in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
	591	in_mad->attr_mod = cpu_to_be32(port);
	592
	593	err = mlx5_MAD_IFC(dev, 1, 1, port,
	594	NULL, NULL, in_mad, out_mad);
	595	if (err)
	596	goto out;
	597
	598	/* Checking LinkSpeedActive for FDR-10 */
	599	if (out_mad->data[15] & 0x1)
	600	props->active_speed = 8;
	601	}
	602	}
	603
604	out:
605	kfree(in_mad);
606	kfree(out_mad);
607
608	return err;
609	}