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0001 /*
0002  * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
0003  *
0004  * This software is available to you under a choice of one of two
0005  * licenses.  You may choose to be licensed under the terms of the GNU
0006  * General Public License (GPL) Version 2, available from the file
0007  * COPYING in the main directory of this source tree, or the
0008  * OpenIB.org BSD license below:
0009  *
0010  *     Redistribution and use in source and binary forms, with or
0011  *     without modification, are permitted provided that the following
0012  *     conditions are met:
0013  *
0014  *      - Redistributions of source code must retain the above
0015  *        copyright notice, this list of conditions and the following
0016  *        disclaimer.
0017  *
0018  *      - Redistributions in binary form must reproduce the above
0019  *        copyright notice, this list of conditions and the following
0020  *        disclaimer in the documentation and/or other materials
0021  *        provided with the distribution.
0022  *
0023  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
0024  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0025  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
0026  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
0027  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
0028  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
0029  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
0030  * SOFTWARE.
0031  */
0032 
0033 #include <linux/mlx5/vport.h>
0034 #include <rdma/ib_mad.h>
0035 #include <rdma/ib_smi.h>
0036 #include <rdma/ib_pma.h>
0037 #include "mlx5_ib.h"
0038 #include "cmd.h"
0039 
0040 enum {
0041     MLX5_IB_VENDOR_CLASS1 = 0x9,
0042     MLX5_IB_VENDOR_CLASS2 = 0xa
0043 };
0044 
0045 static bool can_do_mad_ifc(struct mlx5_ib_dev *dev, u32 port_num,
0046                struct ib_mad *in_mad)
0047 {
0048     if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED &&
0049         in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
0050         return true;
0051     return dev->port_caps[port_num - 1].has_smi;
0052 }
0053 
0054 static int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey,
0055             int ignore_bkey, u32 port, const struct ib_wc *in_wc,
0056             const struct ib_grh *in_grh, const void *in_mad,
0057             void *response_mad)
0058 {
0059     u8 op_modifier = 0;
0060 
0061     if (!can_do_mad_ifc(dev, port, (struct ib_mad *)in_mad))
0062         return -EPERM;
0063 
0064     /* Key check traps can't be generated unless we have in_wc to
0065      * tell us where to send the trap.
0066      */
0067     if (ignore_mkey || !in_wc)
0068         op_modifier |= 0x1;
0069     if (ignore_bkey || !in_wc)
0070         op_modifier |= 0x2;
0071 
0072     return mlx5_cmd_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier,
0073                 port);
0074 }
0075 
0076 static void pma_cnt_ext_assign(struct ib_pma_portcounters_ext *pma_cnt_ext,
0077                    void *out)
0078 {
0079 #define MLX5_SUM_CNT(p, cntr1, cntr2)   \
0080     (MLX5_GET64(query_vport_counter_out, p, cntr1) + \
0081     MLX5_GET64(query_vport_counter_out, p, cntr2))
0082 
0083     pma_cnt_ext->port_xmit_data =
0084         cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.octets,
0085                      transmitted_ib_multicast.octets) >> 2);
0086     pma_cnt_ext->port_rcv_data =
0087         cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.octets,
0088                      received_ib_multicast.octets) >> 2);
0089     pma_cnt_ext->port_xmit_packets =
0090         cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.packets,
0091                      transmitted_ib_multicast.packets));
0092     pma_cnt_ext->port_rcv_packets =
0093         cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.packets,
0094                      received_ib_multicast.packets));
0095     pma_cnt_ext->port_unicast_xmit_packets =
0096         MLX5_GET64_BE(query_vport_counter_out,
0097                   out, transmitted_ib_unicast.packets);
0098     pma_cnt_ext->port_unicast_rcv_packets =
0099         MLX5_GET64_BE(query_vport_counter_out,
0100                   out, received_ib_unicast.packets);
0101     pma_cnt_ext->port_multicast_xmit_packets =
0102         MLX5_GET64_BE(query_vport_counter_out,
0103                   out, transmitted_ib_multicast.packets);
0104     pma_cnt_ext->port_multicast_rcv_packets =
0105         MLX5_GET64_BE(query_vport_counter_out,
0106                   out, received_ib_multicast.packets);
0107 }
0108 
0109 static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
0110                void *out)
0111 {
0112     /* Traffic counters will be reported in
0113      * their 64bit form via ib_pma_portcounters_ext by default.
0114      */
0115     void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out,
0116                      counter_set);
0117 
0118 #define MLX5_ASSIGN_PMA_CNTR(counter_var, counter_name) {       \
0119     counter_var = MLX5_GET_BE(typeof(counter_var),          \
0120                   ib_port_cntrs_grp_data_layout,    \
0121                   out_pma, counter_name);       \
0122     }
0123 
0124     MLX5_ASSIGN_PMA_CNTR(pma_cnt->symbol_error_counter,
0125                  symbol_error_counter);
0126     MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_error_recovery_counter,
0127                  link_error_recovery_counter);
0128     MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_downed_counter,
0129                  link_downed_counter);
0130     MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_errors,
0131                  port_rcv_errors);
0132     MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_remphys_errors,
0133                  port_rcv_remote_physical_errors);
0134     MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_switch_relay_errors,
0135                  port_rcv_switch_relay_errors);
0136     MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_discards,
0137                  port_xmit_discards);
0138     MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_constraint_errors,
0139                  port_xmit_constraint_errors);
0140     MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_wait,
0141                  port_xmit_wait);
0142     MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_constraint_errors,
0143                  port_rcv_constraint_errors);
0144     MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_overrun_errors,
0145                  link_overrun_errors);
0146     MLX5_ASSIGN_PMA_CNTR(pma_cnt->vl15_dropped,
0147                  vl_15_dropped);
0148 }
0149 
0150 static int process_pma_cmd(struct mlx5_ib_dev *dev, u32 port_num,
0151                const struct ib_mad *in_mad, struct ib_mad *out_mad)
0152 {
0153     struct mlx5_core_dev *mdev;
0154     bool native_port = true;
0155     u32 mdev_port_num;
0156     void *out_cnt;
0157     int err;
0158 
0159     mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
0160     if (!mdev) {
0161         /* Fail to get the native port, likely due to 2nd port is still
0162          * unaffiliated. In such case default to 1st port and attached
0163          * PF device.
0164          */
0165         native_port = false;
0166         mdev = dev->mdev;
0167         mdev_port_num = 1;
0168     }
0169     if (MLX5_CAP_GEN(dev->mdev, num_ports) == 1) {
0170         /* set local port to one for Function-Per-Port HCA. */
0171         mdev = dev->mdev;
0172         mdev_port_num = 1;
0173     }
0174 
0175     /* Declaring support of extended counters */
0176     if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
0177         struct ib_class_port_info cpi = {};
0178 
0179         cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
0180         memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
0181         err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
0182         goto done;
0183     }
0184 
0185     if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
0186         struct ib_pma_portcounters_ext *pma_cnt_ext =
0187             (struct ib_pma_portcounters_ext *)(out_mad->data + 40);
0188         int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
0189 
0190         out_cnt = kvzalloc(sz, GFP_KERNEL);
0191         if (!out_cnt) {
0192             err = IB_MAD_RESULT_FAILURE;
0193             goto done;
0194         }
0195 
0196         err = mlx5_core_query_vport_counter(mdev, 0, 0, mdev_port_num,
0197                             out_cnt);
0198         if (!err)
0199             pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
0200     } else {
0201         struct ib_pma_portcounters *pma_cnt =
0202             (struct ib_pma_portcounters *)(out_mad->data + 40);
0203         int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
0204 
0205         out_cnt = kvzalloc(sz, GFP_KERNEL);
0206         if (!out_cnt) {
0207             err = IB_MAD_RESULT_FAILURE;
0208             goto done;
0209         }
0210 
0211         err = mlx5_core_query_ib_ppcnt(mdev, mdev_port_num,
0212                            out_cnt, sz);
0213         if (!err)
0214             pma_cnt_assign(pma_cnt, out_cnt);
0215     }
0216     kvfree(out_cnt);
0217     err = err ? IB_MAD_RESULT_FAILURE :
0218             IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
0219 done:
0220     if (native_port)
0221         mlx5_ib_put_native_port_mdev(dev, port_num);
0222     return err;
0223 }
0224 
0225 int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num,
0226             const struct ib_wc *in_wc, const struct ib_grh *in_grh,
0227             const struct ib_mad *in, struct ib_mad *out,
0228             size_t *out_mad_size, u16 *out_mad_pkey_index)
0229 {
0230     struct mlx5_ib_dev *dev = to_mdev(ibdev);
0231     u8 mgmt_class = in->mad_hdr.mgmt_class;
0232     u8 method = in->mad_hdr.method;
0233     u16 slid;
0234     int err;
0235 
0236     slid = in_wc ? ib_lid_cpu16(in_wc->slid) :
0237                be16_to_cpu(IB_LID_PERMISSIVE);
0238 
0239     if (method == IB_MGMT_METHOD_TRAP && !slid)
0240         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
0241 
0242     switch (mgmt_class) {
0243     case IB_MGMT_CLASS_SUBN_LID_ROUTED:
0244     case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: {
0245         if (method != IB_MGMT_METHOD_GET &&
0246             method != IB_MGMT_METHOD_SET &&
0247             method != IB_MGMT_METHOD_TRAP_REPRESS)
0248             return IB_MAD_RESULT_SUCCESS;
0249 
0250         /* Don't process SMInfo queries -- the SMA can't handle them.
0251          */
0252         if (in->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
0253             return IB_MAD_RESULT_SUCCESS;
0254     } break;
0255     case IB_MGMT_CLASS_PERF_MGMT:
0256         if (MLX5_CAP_GEN(dev->mdev, vport_counters) &&
0257             method == IB_MGMT_METHOD_GET)
0258             return process_pma_cmd(dev, port_num, in, out);
0259         fallthrough;
0260     case MLX5_IB_VENDOR_CLASS1:
0261     case MLX5_IB_VENDOR_CLASS2:
0262     case IB_MGMT_CLASS_CONG_MGMT: {
0263         if (method != IB_MGMT_METHOD_GET &&
0264             method != IB_MGMT_METHOD_SET)
0265             return IB_MAD_RESULT_SUCCESS;
0266     } break;
0267     default:
0268         return IB_MAD_RESULT_SUCCESS;
0269     }
0270 
0271     err = mlx5_MAD_IFC(to_mdev(ibdev), mad_flags & IB_MAD_IGNORE_MKEY,
0272                mad_flags & IB_MAD_IGNORE_BKEY, port_num, in_wc,
0273                in_grh, in, out);
0274     if (err)
0275         return IB_MAD_RESULT_FAILURE;
0276 
0277     /* set return bit in status of directed route responses */
0278     if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
0279         out->mad_hdr.status |= cpu_to_be16(1 << 15);
0280 
0281     if (method == IB_MGMT_METHOD_TRAP_REPRESS)
0282         /* no response for trap repress */
0283         return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
0284 
0285     return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
0286 }
0287 
0288 int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, unsigned int port)
0289 {
0290     struct ib_smp *in_mad  = NULL;
0291     struct ib_smp *out_mad = NULL;
0292     int err = -ENOMEM;
0293     u16 packet_error;
0294 
0295     in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
0296     out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
0297     if (!in_mad || !out_mad)
0298         goto out;
0299 
0300     ib_init_query_mad(in_mad);
0301     in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
0302     in_mad->attr_mod = cpu_to_be32(port);
0303 
0304     err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
0305 
0306     packet_error = be16_to_cpu(out_mad->status);
0307 
0308     dev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
0309         MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
0310 
0311 out:
0312     kfree(in_mad);
0313     kfree(out_mad);
0314     return err;
0315 }
0316 
0317 static int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
0318                          struct ib_smp *out_mad)
0319 {
0320     struct ib_smp *in_mad = NULL;
0321     int err = -ENOMEM;
0322 
0323     in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
0324     if (!in_mad)
0325         return -ENOMEM;
0326 
0327     ib_init_query_mad(in_mad);
0328     in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
0329 
0330     err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
0331                out_mad);
0332 
0333     kfree(in_mad);
0334     return err;
0335 }
0336 
0337 int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
0338                      __be64 *sys_image_guid)
0339 {
0340     struct ib_smp *out_mad = NULL;
0341     int err = -ENOMEM;
0342 
0343     out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
0344     if (!out_mad)
0345         return -ENOMEM;
0346 
0347     err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
0348     if (err)
0349         goto out;
0350 
0351     memcpy(sys_image_guid, out_mad->data + 4, 8);
0352 
0353 out:
0354     kfree(out_mad);
0355 
0356     return err;
0357 }
0358 
0359 int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
0360                  u16 *max_pkeys)
0361 {
0362     struct ib_smp *out_mad = NULL;
0363     int err = -ENOMEM;
0364 
0365     out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
0366     if (!out_mad)
0367         return -ENOMEM;
0368 
0369     err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
0370     if (err)
0371         goto out;
0372 
0373     *max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
0374 
0375 out:
0376     kfree(out_mad);
0377 
0378     return err;
0379 }
0380 
0381 int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
0382                  u32 *vendor_id)
0383 {
0384     struct ib_smp *out_mad = NULL;
0385     int err = -ENOMEM;
0386 
0387     out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
0388     if (!out_mad)
0389         return -ENOMEM;
0390 
0391     err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
0392     if (err)
0393         goto out;
0394 
0395     *vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff;
0396 
0397 out:
0398     kfree(out_mad);
0399 
0400     return err;
0401 }
0402 
0403 int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
0404 {
0405     struct ib_smp *in_mad  = NULL;
0406     struct ib_smp *out_mad = NULL;
0407     int err = -ENOMEM;
0408 
0409     in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
0410     out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
0411     if (!in_mad || !out_mad)
0412         goto out;
0413 
0414     ib_init_query_mad(in_mad);
0415     in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
0416 
0417     err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
0418     if (err)
0419         goto out;
0420 
0421     memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
0422 out:
0423     kfree(in_mad);
0424     kfree(out_mad);
0425     return err;
0426 }
0427 
0428 int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid)
0429 {
0430     struct ib_smp *in_mad  = NULL;
0431     struct ib_smp *out_mad = NULL;
0432     int err = -ENOMEM;
0433 
0434     in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
0435     out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
0436     if (!in_mad || !out_mad)
0437         goto out;
0438 
0439     ib_init_query_mad(in_mad);
0440     in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
0441 
0442     err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
0443     if (err)
0444         goto out;
0445 
0446     memcpy(node_guid, out_mad->data + 12, 8);
0447 out:
0448     kfree(in_mad);
0449     kfree(out_mad);
0450     return err;
0451 }
0452 
0453 int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u32 port, u16 index,
0454                 u16 *pkey)
0455 {
0456     struct ib_smp *in_mad  = NULL;
0457     struct ib_smp *out_mad = NULL;
0458     int err = -ENOMEM;
0459 
0460     in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
0461     out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
0462     if (!in_mad || !out_mad)
0463         goto out;
0464 
0465     ib_init_query_mad(in_mad);
0466     in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
0467     in_mad->attr_mod = cpu_to_be32(index / 32);
0468 
0469     err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
0470                out_mad);
0471     if (err)
0472         goto out;
0473 
0474     *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
0475 
0476 out:
0477     kfree(in_mad);
0478     kfree(out_mad);
0479     return err;
0480 }
0481 
0482 int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u32 port, int index,
0483                 union ib_gid *gid)
0484 {
0485     struct ib_smp *in_mad  = NULL;
0486     struct ib_smp *out_mad = NULL;
0487     int err = -ENOMEM;
0488 
0489     in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
0490     out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
0491     if (!in_mad || !out_mad)
0492         goto out;
0493 
0494     ib_init_query_mad(in_mad);
0495     in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
0496     in_mad->attr_mod = cpu_to_be32(port);
0497 
0498     err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
0499                out_mad);
0500     if (err)
0501         goto out;
0502 
0503     memcpy(gid->raw, out_mad->data + 8, 8);
0504 
0505     ib_init_query_mad(in_mad);
0506     in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
0507     in_mad->attr_mod = cpu_to_be32(index / 8);
0508 
0509     err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
0510                out_mad);
0511     if (err)
0512         goto out;
0513 
0514     memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
0515 
0516 out:
0517     kfree(in_mad);
0518     kfree(out_mad);
0519     return err;
0520 }
0521 
0522 int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u32 port,
0523                 struct ib_port_attr *props)
0524 {
0525     struct mlx5_ib_dev *dev = to_mdev(ibdev);
0526     struct mlx5_core_dev *mdev = dev->mdev;
0527     struct ib_smp *in_mad  = NULL;
0528     struct ib_smp *out_mad = NULL;
0529     int ext_active_speed;
0530     int err = -ENOMEM;
0531 
0532     in_mad  = kzalloc(sizeof(*in_mad), GFP_KERNEL);
0533     out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
0534     if (!in_mad || !out_mad)
0535         goto out;
0536 
0537     /* props being zeroed by the caller, avoid zeroing it here */
0538 
0539     ib_init_query_mad(in_mad);
0540     in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
0541     in_mad->attr_mod = cpu_to_be32(port);
0542 
0543     err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
0544     if (err) {
0545         mlx5_ib_warn(dev, "err %d\n", err);
0546         goto out;
0547     }
0548 
0549     props->lid      = be16_to_cpup((__be16 *)(out_mad->data + 16));
0550     props->lmc      = out_mad->data[34] & 0x7;
0551     props->sm_lid       = be16_to_cpup((__be16 *)(out_mad->data + 18));
0552     props->sm_sl        = out_mad->data[36] & 0xf;
0553     props->state        = out_mad->data[32] & 0xf;
0554     props->phys_state   = out_mad->data[33] >> 4;
0555     props->port_cap_flags   = be32_to_cpup((__be32 *)(out_mad->data + 20));
0556     props->gid_tbl_len  = out_mad->data[50];
0557     props->max_msg_sz   = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
0558     props->pkey_tbl_len = dev->pkey_table_len;
0559     props->bad_pkey_cntr    = be16_to_cpup((__be16 *)(out_mad->data + 46));
0560     props->qkey_viol_cntr   = be16_to_cpup((__be16 *)(out_mad->data + 48));
0561     props->active_width = out_mad->data[31] & 0xf;
0562     props->active_speed = out_mad->data[35] >> 4;
0563     props->max_mtu      = out_mad->data[41] & 0xf;
0564     props->active_mtu   = out_mad->data[36] >> 4;
0565     props->subnet_timeout   = out_mad->data[51] & 0x1f;
0566     props->max_vl_num   = out_mad->data[37] >> 4;
0567     props->init_type_reply  = out_mad->data[41] >> 4;
0568 
0569     if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) {
0570         props->port_cap_flags2 =
0571             be16_to_cpup((__be16 *)(out_mad->data + 60));
0572 
0573         if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP)
0574             props->active_width = out_mad->data[31] & 0x1f;
0575     }
0576 
0577     /* Check if extended speeds (EDR/FDR/...) are supported */
0578     if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
0579         ext_active_speed = out_mad->data[62] >> 4;
0580 
0581         switch (ext_active_speed) {
0582         case 1:
0583             props->active_speed = 16; /* FDR */
0584             break;
0585         case 2:
0586             props->active_speed = 32; /* EDR */
0587             break;
0588         case 4:
0589             if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
0590                 props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP)
0591                 props->active_speed = IB_SPEED_HDR;
0592             break;
0593         case 8:
0594             if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
0595                 props->port_cap_flags2 & IB_PORT_LINK_SPEED_NDR_SUP)
0596                 props->active_speed = IB_SPEED_NDR;
0597             break;
0598         }
0599     }
0600 
0601     /* If reported active speed is QDR, check if is FDR-10 */
0602     if (props->active_speed == 4) {
0603         if (dev->port_caps[port - 1].ext_port_cap &
0604             MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
0605             ib_init_query_mad(in_mad);
0606             in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
0607             in_mad->attr_mod = cpu_to_be32(port);
0608 
0609             err = mlx5_MAD_IFC(dev, 1, 1, port,
0610                        NULL, NULL, in_mad, out_mad);
0611             if (err)
0612                 goto out;
0613 
0614             /* Checking LinkSpeedActive for FDR-10 */
0615             if (out_mad->data[15] & 0x1)
0616                 props->active_speed = 8;
0617         }
0618     }
0619 
0620 out:
0621     kfree(in_mad);
0622     kfree(out_mad);
0623 
0624     return err;
0625 }
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