FreeBSD/Linux Kernel Cross Reference
sys/dev/mlx5/mlx5_en/mlx5_en_txrx.c

     /*-
      * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
      * 2. 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.
     *
     * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #include "opt_rss.h"
    #include "opt_ratelimit.h"
    
    #include <linux/printk.h>
    
    #include <dev/mlx5/mlx5_en/en.h>
    
    struct mlx5_cqe64 *
    mlx5e_get_cqe(struct mlx5e_cq *cq)
    {
            struct mlx5_cqe64 *cqe;
    
            cqe = mlx5_cqwq_get_wqe(&cq->wq, mlx5_cqwq_get_ci(&cq->wq));
    
            if ((cqe->op_own ^ mlx5_cqwq_get_wrap_cnt(&cq->wq)) & MLX5_CQE_OWNER_MASK)
                    return (NULL);
    
            /* ensure cqe content is read after cqe ownership bit */
            atomic_thread_fence_acq();
    
            return (cqe);
    }
    
    void
    mlx5e_cq_error_event(struct mlx5_core_cq *mcq, int event)
    {
            struct mlx5e_cq *cq = container_of(mcq, struct mlx5e_cq, mcq);
    
            mlx5_en_err(cq->priv->ifp, "cqn=0x%.6x event=0x%.2x\n",
                mcq->cqn, event);
    }
    
    void
    mlx5e_dump_err_cqe(struct mlx5e_cq *cq, u32 qn, const struct mlx5_err_cqe *err_cqe)
    {
            u32 ci;
    
            /* Don't print flushed in error syndromes. */
            if (err_cqe->vendor_err_synd == 0xf9 && err_cqe->syndrome == 0x05)
                    return;
            /* Don't print when the queue is set to error state by software. */
            if (err_cqe->vendor_err_synd == 0xf5 && err_cqe->syndrome == 0x05)
                    return;
    
            ci = (cq->wq.cc - 1) & cq->wq.sz_m1;
    
            mlx5_en_err(cq->priv->ifp,
                "Error CQE on CQN 0x%x, CI 0x%x, QN 0x%x, OPCODE 0x%x, SYNDROME 0x%x, VENDOR SYNDROME 0x%x\n",
                cq->mcq.cqn, ci, qn, err_cqe->op_own >> 4,
                err_cqe->syndrome, err_cqe->vendor_err_synd);
    
            print_hex_dump(NULL, NULL, DUMP_PREFIX_OFFSET,
                16, 1, err_cqe, sizeof(*err_cqe), false);
    }

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