140 lines
4.6 KiB
C
140 lines
4.6 KiB
C
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/*
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* Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/mlx5/cmd.h>
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#include <rdma/ib_mad.h>
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#include <rdma/ib_smi.h>
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#include "mlx5_ib.h"
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enum {
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MLX5_IB_VENDOR_CLASS1 = 0x9,
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MLX5_IB_VENDOR_CLASS2 = 0xa
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};
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int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
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u8 port, struct ib_wc *in_wc, struct ib_grh *in_grh,
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void *in_mad, void *response_mad)
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{
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u8 op_modifier = 0;
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/* Key check traps can't be generated unless we have in_wc to
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* tell us where to send the trap.
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*/
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if (ignore_mkey || !in_wc)
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op_modifier |= 0x1;
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if (ignore_bkey || !in_wc)
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op_modifier |= 0x2;
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return mlx5_core_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier, port);
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}
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int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
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struct ib_wc *in_wc, struct ib_grh *in_grh,
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struct ib_mad *in_mad, struct ib_mad *out_mad)
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{
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u16 slid;
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int err;
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slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
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if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0)
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return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
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if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
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in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
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if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
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in_mad->mad_hdr.method != IB_MGMT_METHOD_SET &&
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in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS)
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return IB_MAD_RESULT_SUCCESS;
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/* Don't process SMInfo queries -- the SMA can't handle them.
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*/
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if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
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return IB_MAD_RESULT_SUCCESS;
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} else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT ||
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in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS1 ||
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in_mad->mad_hdr.mgmt_class == MLX5_IB_VENDOR_CLASS2 ||
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in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) {
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if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
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in_mad->mad_hdr.method != IB_MGMT_METHOD_SET)
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return IB_MAD_RESULT_SUCCESS;
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} else {
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return IB_MAD_RESULT_SUCCESS;
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}
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err = mlx5_MAD_IFC(to_mdev(ibdev),
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mad_flags & IB_MAD_IGNORE_MKEY,
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mad_flags & IB_MAD_IGNORE_BKEY,
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port_num, in_wc, in_grh, in_mad, out_mad);
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if (err)
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return IB_MAD_RESULT_FAILURE;
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/* set return bit in status of directed route responses */
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if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
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out_mad->mad_hdr.status |= cpu_to_be16(1 << 15);
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if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS)
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/* no response for trap repress */
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return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
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return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
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}
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int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
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{
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struct ib_smp *in_mad = NULL;
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struct ib_smp *out_mad = NULL;
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int err = -ENOMEM;
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u16 packet_error;
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in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
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out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
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if (!in_mad || !out_mad)
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goto out;
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init_query_mad(in_mad);
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in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
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in_mad->attr_mod = cpu_to_be32(port);
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err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
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packet_error = be16_to_cpu(out_mad->status);
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dev->mdev->caps.gen.ext_port_cap[port - 1] = (!err && !packet_error) ?
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MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
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out:
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kfree(in_mad);
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kfree(out_mad);
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return err;
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}
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