include/linux/can/rx-offload.h

   1 /*
   2  * linux/can/rx-offload.h
   3  *
   4  * Copyright (c) 2014 David Jander, Protonic Holland
   5  * Copyright (c) 2014-2017 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the version 2 of the GNU General Public License
   9  * as published by the Free Software Foundation
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #ifndef _CAN_RX_OFFLOAD_H
  18 #define _CAN_RX_OFFLOAD_H
  19
  20 #include <linux/netdevice.h>
  21 #include <linux/can.h>
  22
  23 struct can_rx_offload {
  24         struct net_device *dev;
  25
  26         unsigned int (*mailbox_read)(struct can_rx_offload *offload, struct can_frame *cf,
  27                                      u32 *timestamp, unsigned int mb);
  28
  29         struct sk_buff_head skb_queue;
  30         u32 skb_queue_len_max;
  31
  32         unsigned int mb_first;
  33         unsigned int mb_last;
  34
  35         struct napi_struct napi;
  36
  37         bool inc;
  38 };
  39
  40 int can_rx_offload_add_timestamp(struct net_device *dev, struct can_rx_offload *offload);
  41 int can_rx_offload_add_fifo(struct net_device *dev, struct can_rx_offload *offload, unsigned int weight);
  42 int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload, u64 reg);
  43 int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
  44 int can_rx_offload_irq_queue_err_skb(struct can_rx_offload *offload, struct sk_buff *skb);
  45 void can_rx_offload_reset(struct can_rx_offload *offload);
  46 void can_rx_offload_del(struct can_rx_offload *offload);
  47 void can_rx_offload_enable(struct can_rx_offload *offload);
  48
  49 static inline void can_rx_offload_schedule(struct can_rx_offload *offload)
  50 {
  51         napi_schedule(&offload->napi);
  52 }
  53
  54 static inline void can_rx_offload_disable(struct can_rx_offload *offload)
  55 {
  56         napi_disable(&offload->napi);
  57 }
  58
  59 #endif /* !_CAN_RX_OFFLOAD_H */