include/linux/can/rx-offload.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * linux/can/rx-offload.h
   4  *
   5  * Copyright (c) 2014 David Jander, Protonic Holland
   6  * Copyright (c) 2014-2017 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
   7  */
   8
   9 #ifndef _CAN_RX_OFFLOAD_H
  10 #define _CAN_RX_OFFLOAD_H
  11
  12 #include <linux/netdevice.h>
  13 #include <linux/can.h>
  14
  15 struct can_rx_offload {
  16         struct net_device *dev;
  17
  18         struct sk_buff *(*mailbox_read)(struct can_rx_offload *offload,
  19                                         unsigned int mb, u32 *timestamp,
  20                                         bool drop);
  21
  22         struct sk_buff_head skb_queue;
  23         u32 skb_queue_len_max;
  24
  25         unsigned int mb_first;
  26         unsigned int mb_last;
  27
  28         struct napi_struct napi;
  29
  30         bool inc;
  31 };
  32
  33 int can_rx_offload_add_timestamp(struct net_device *dev,
  34                                  struct can_rx_offload *offload);
  35 int can_rx_offload_add_fifo(struct net_device *dev,
  36                             struct can_rx_offload *offload,
  37                             unsigned int weight);
  38 int can_rx_offload_add_manual(struct net_device *dev,
  39                               struct can_rx_offload *offload,
  40                               unsigned int weight);
  41 int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,
  42                                          u64 reg);
  43 int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
  44 int can_rx_offload_queue_sorted(struct can_rx_offload *offload,
  45                                 struct sk_buff *skb, u32 timestamp);
  46 unsigned int can_rx_offload_get_echo_skb(struct can_rx_offload *offload,
  47                                          unsigned int idx, u32 timestamp,
  48                                          unsigned int *frame_len_ptr);
  49 int can_rx_offload_queue_tail(struct can_rx_offload *offload,
  50                               struct sk_buff *skb);
  51 void can_rx_offload_del(struct can_rx_offload *offload);
  52 void can_rx_offload_enable(struct can_rx_offload *offload);
  53
  54 static inline void can_rx_offload_schedule(struct can_rx_offload *offload)
  55 {
  56         napi_schedule(&offload->napi);
  57 }
  58
  59 static inline void can_rx_offload_disable(struct can_rx_offload *offload)
  60 {
  61         napi_disable(&offload->napi);
  62 }
  63
  64 #endif /* !_CAN_RX_OFFLOAD_H */