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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
15struct 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
33int can_rx_offload_add_timestamp(struct net_device *dev,
34 struct can_rx_offload *offload);
35int can_rx_offload_add_fifo(struct net_device *dev,
36 struct can_rx_offload *offload,
37 unsigned int weight);
38int can_rx_offload_add_manual(struct net_device *dev,
39 struct can_rx_offload *offload,
40 unsigned int weight);
41int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,
42 u64 reg);
43int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
44int can_rx_offload_queue_sorted(struct can_rx_offload *offload,
45 struct sk_buff *skb, u32 timestamp);
46unsigned int can_rx_offload_get_echo_skb(struct can_rx_offload *offload,
47 unsigned int idx, u32 timestamp,
48 unsigned int *frame_len_ptr);
49int can_rx_offload_queue_tail(struct can_rx_offload *offload,
50 struct sk_buff *skb);
51void can_rx_offload_del(struct can_rx_offload *offload);
52void can_rx_offload_enable(struct can_rx_offload *offload);
53
54static inline void can_rx_offload_schedule(struct can_rx_offload *offload)
55{
56 napi_schedule(&offload->napi);
57}
58
59static 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 */