FreeBSD/Linux Kernel Cross Reference
sys/dev/mlx5/mlx5_en/en_hw_tls.h

     /*-
      * Copyright (c) 2019 Mellanox Technologies. All rights reserved.
      * Copyright (c) 2022 NVIDIA corporation & affiliates.
      *
      * 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _MLX5_TLS_H_
    #define _MLX5_TLS_H_
    
    #define MLX5E_TLS_TAG_LOCK(tag)         mtx_lock(&(tag)->mtx)
    #define MLX5E_TLS_TAG_UNLOCK(tag)       mtx_unlock(&(tag)->mtx)
    
    #define MLX5E_TLS_STAT_INC(tag, field, num) \
            counter_u64_add((tag)->tls->stats.field, num)
    
    enum {
          MLX5E_TLS_LOOP = 0,
          MLX5E_TLS_FAILURE = 1,
          MLX5E_TLS_DEFERRED = 2,
          MLX5E_TLS_CONTINUE = 3,
    };
    
    struct mlx5e_tls;
    struct mlx5e_tls_tag {
            struct m_snd_tag tag;
            uint32_t tisn;          /* HW TIS context number */
            uint32_t dek_index;     /* HW TLS context number */
            struct mlx5e_tls *tls;
            struct m_snd_tag *rl_tag;
            struct mtx mtx;
            uint32_t expected_seq; /* expected TCP sequence number */
            uint32_t state; /* see MLX5E_TLS_ST_XXX */
    #define MLX5E_TLS_ST_INIT 0
    #define MLX5E_TLS_ST_SETUP 1
    #define MLX5E_TLS_ST_TXRDY 2
    #define MLX5E_TLS_ST_RELEASE 3
    #define MLX5E_TLS_ST_FREED 4
            struct work_struct work;
    
            uint32_t dek_index_ok:1;
    
            /* parameters needed */
            uint8_t crypto_params[128] __aligned(4);
    } __aligned(MLX5E_CACHELINE_SIZE);
    
    #define MLX5E_TLS_STATS(m)                                      \
      m(+1, u64, tx_packets, "tx_packets", "Transmitted packets")   \
      m(+1, u64, tx_bytes, "tx_bytes", "Transmitted bytes")         \
      m(+1, u64, tx_packets_ooo, "tx_packets_ooo", "Transmitted packets out of order") \
      m(+1, u64, tx_bytes_ooo, "tx_bytes_ooo", "Transmitted bytes out of order") \
      m(+1, u64, tx_error, "tx_error", "Transmitted packets with error")
    
    #define MLX5E_TLS_STATS_NUM (0 MLX5E_TLS_STATS(MLX5E_STATS_COUNT))
    
    struct mlx5e_tls_stats {
            struct  sysctl_ctx_list ctx;
            counter_u64_t   arg[0];
            MLX5E_TLS_STATS(MLX5E_STATS_COUNTER)
    };
    
    struct mlx5e_tls {
            struct sysctl_ctx_list ctx;
            struct mlx5e_tls_stats stats;
            struct workqueue_struct *wq;
            uma_zone_t zone;
            uint32_t max_resources;         /* max number of resources */
            volatile uint32_t num_resources;        /* current number of resources */
            int init;                       /* set when ready */
            char zname[32];
    };
    
    int mlx5e_tls_init(struct mlx5e_priv *);
    void mlx5e_tls_cleanup(struct mlx5e_priv *);
    int mlx5e_sq_tls_xmit(struct mlx5e_sq *, struct mlx5e_xmit_args *, struct mbuf **);
    
    if_snd_tag_alloc_t mlx5e_tls_snd_tag_alloc;
    
   #endif                                  /* _MLX5_TLS_H_ */

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