LXR linux/include/linux/can/can-ml.h

   1/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
   2/* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
   3 * Copyright (c) 2017 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
   4 *
   5 * All rights reserved.
   6 *
   7 * Redistribution and use in source and binary forms, with or without
   8 * modification, are permitted provided that the following conditions
   9 * are met:
  10 * 1. Redistributions of source code must retain the above copyright
  11 *    notice, this list of conditions and the following disclaimer.
  12 * 2. Redistributions in binary form must reproduce the above copyright
  13 *    notice, this list of conditions and the following disclaimer in the
  14 *    documentation and/or other materials provided with the distribution.
  15 * 3. Neither the name of Volkswagen nor the names of its contributors
  16 *    may be used to endorse or promote products derived from this software
  17 *    without specific prior written permission.
  18 *
  19 * Alternatively, provided that this notice is retained in full, this
  20 * software may be distributed under the terms of the GNU General
  21 * Public License ("GPL") version 2, in which case the provisions of the
  22 * GPL apply INSTEAD OF those given above.
  23 *
  24 * The provided data structures and external interfaces from this code
  25 * are not restricted to be used by modules with a GPL compatible license.
  26 *
  27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  31 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  32 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  33 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  34 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  35 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  36 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  37 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  38 * DAMAGE.
  39 *
  40 */
  41
  42#ifndef CAN_ML_H
  43#define CAN_ML_H
  44
  45#include <linux/can.h>
  46#include <linux/list.h>
  47#include <linux/netdevice.h>
  48
  49#define CAN_SFF_RCV_ARRAY_SZ (1 << CAN_SFF_ID_BITS)
  50#define CAN_EFF_RCV_HASH_BITS 10
  51#define CAN_EFF_RCV_ARRAY_SZ (1 << CAN_EFF_RCV_HASH_BITS)
  52
  53enum { RX_ERR, RX_ALL, RX_FIL, RX_INV, RX_MAX };
  54
  55struct can_dev_rcv_lists {
  56        struct hlist_head rx[RX_MAX];
  57        struct hlist_head rx_sff[CAN_SFF_RCV_ARRAY_SZ];
  58        struct hlist_head rx_eff[CAN_EFF_RCV_ARRAY_SZ];
  59        int entries;
  60};
  61
  62struct can_ml_priv {
  63        struct can_dev_rcv_lists dev_rcv_lists;
  64#ifdef CAN_J1939
  65        struct j1939_priv *j1939_priv;
  66#endif
  67};
  68
  69static inline struct can_ml_priv *can_get_ml_priv(struct net_device *dev)
  70{
  71        return netdev_get_ml_priv(dev, ML_PRIV_CAN);
  72}
  73
  74static inline void can_set_ml_priv(struct net_device *dev,
  75                                   struct can_ml_priv *ml_priv)
  76{
  77        netdev_set_ml_priv(dev, ml_priv, ML_PRIV_CAN);
  78}
  79
  80#endif /* CAN_ML_H */
  81