mlx5_mad.c

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    1 /*-
    2  * Copyright (c) 2013-2017, Mellanox Technologies, Ltd.  All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
   14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   16  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
   17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   23  * SUCH DAMAGE.
   24  *
   25  * $FreeBSD$
   26  */
   27 
   28 #include "opt_rss.h"
   29 #include "opt_ratelimit.h"
   30 
   31 #include <linux/kernel.h>
   32 #include <linux/module.h>
   33 #include <dev/mlx5/driver.h>
   34 #include <dev/mlx5/mlx5_core/mlx5_core.h>
   35 
   36 int mlx5_core_mad_ifc(struct mlx5_core_dev *dev, const void *inb, void *outb,
   37                       u16 opmod, u8 port)
   38 {
   39         int outlen = MLX5_ST_SZ_BYTES(mad_ifc_out);
   40         int inlen = MLX5_ST_SZ_BYTES(mad_ifc_in);
   41         int err = -ENOMEM;
   42         void *data;
   43         void *resp;
   44         u32 *out;
   45         u32 *in;
   46 
   47         in = kzalloc(inlen, GFP_KERNEL);
   48         out = kzalloc(outlen, GFP_KERNEL);
   49         if (!in || !out)
   50                 goto out;
   51 
   52         MLX5_SET(mad_ifc_in, in, opcode, MLX5_CMD_OP_MAD_IFC);
   53         MLX5_SET(mad_ifc_in, in, op_mod, opmod);
   54         MLX5_SET(mad_ifc_in, in, port, port);
   55 
   56         data = MLX5_ADDR_OF(mad_ifc_in, in, mad);
   57         memcpy(data, inb, MLX5_FLD_SZ_BYTES(mad_ifc_in, mad));
   58 
   59         err = mlx5_cmd_exec(dev, in, inlen, out, outlen);
   60         if (err)
   61                 goto out;
   62 
   63         resp = MLX5_ADDR_OF(mad_ifc_out, out, response_mad_packet);
   64         memcpy(outb, resp,
   65                MLX5_FLD_SZ_BYTES(mad_ifc_out, response_mad_packet));
   66 
   67 out:
   68         kfree(out);
   69         kfree(in);
   70         return err;
   71 }
   72 EXPORT_SYMBOL_GPL(mlx5_core_mad_ifc);

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FreeBSD/Linux Kernel Cross Reference sys/dev/mlx5/mlx5_core/mlx5_mad.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/mlx5/mlx5_core/mlx5_mad.c