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 unsigned int (*mailbox_read)(struct can_rx_offload *offload,
19 struct can_frame *cf,
20 u32 *timestamp, unsigned int mb);
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_irq_offload_timestamp(struct can_rx_offload *offload,
39 u64 reg);
40 int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
41 int can_rx_offload_queue_sorted(struct can_rx_offload *offload,
42 struct sk_buff *skb, u32 timestamp);
43 unsigned int can_rx_offload_get_echo_skb(struct can_rx_offload *offload,
44 unsigned int idx, u32 timestamp);
45 int can_rx_offload_queue_tail(struct can_rx_offload *offload,
46 struct sk_buff *skb);
47 void can_rx_offload_reset(struct can_rx_offload *offload);
48 void can_rx_offload_del(struct can_rx_offload *offload);
49 void can_rx_offload_enable(struct can_rx_offload *offload);
50
can_rx_offload_schedule(struct can_rx_offload * offload)51 static inline void can_rx_offload_schedule(struct can_rx_offload *offload)
52 {
53 napi_schedule(&offload->napi);
54 }
55
can_rx_offload_disable(struct can_rx_offload * offload)56 static inline void can_rx_offload_disable(struct can_rx_offload *offload)
57 {
58 napi_disable(&offload->napi);
59 }
60
61 #endif /* !_CAN_RX_OFFLOAD_H */
62
