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 int can_rx_offload_queue_tail(struct can_rx_offload *offload,
49 struct sk_buff *skb);
50 void can_rx_offload_del(struct can_rx_offload *offload);
51 void can_rx_offload_enable(struct can_rx_offload *offload);
52
can_rx_offload_schedule(struct can_rx_offload * offload)53 static inline void can_rx_offload_schedule(struct can_rx_offload *offload)
54 {
55 napi_schedule(&offload->napi);
56 }
57
can_rx_offload_disable(struct can_rx_offload * offload)58 static inline void can_rx_offload_disable(struct can_rx_offload *offload)
59 {
60 napi_disable(&offload->napi);
61 }
62
63 #endif /* !_CAN_RX_OFFLOAD_H */
64