1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * linux/can/rx-offload.h
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (c) 2014 David Jander, Protonic Holland
6*4882a593Smuzhiyun * Copyright (c) 2014-2017 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #ifndef _CAN_RX_OFFLOAD_H
10*4882a593Smuzhiyun #define _CAN_RX_OFFLOAD_H
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/netdevice.h>
13*4882a593Smuzhiyun #include <linux/can.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun struct can_rx_offload {
16*4882a593Smuzhiyun struct net_device *dev;
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun struct sk_buff *(*mailbox_read)(struct can_rx_offload *offload,
19*4882a593Smuzhiyun unsigned int mb, u32 *timestamp,
20*4882a593Smuzhiyun bool drop);
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun struct sk_buff_head skb_queue;
23*4882a593Smuzhiyun u32 skb_queue_len_max;
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun unsigned int mb_first;
26*4882a593Smuzhiyun unsigned int mb_last;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun struct napi_struct napi;
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun bool inc;
31*4882a593Smuzhiyun };
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun int can_rx_offload_add_timestamp(struct net_device *dev,
34*4882a593Smuzhiyun struct can_rx_offload *offload);
35*4882a593Smuzhiyun int can_rx_offload_add_fifo(struct net_device *dev,
36*4882a593Smuzhiyun struct can_rx_offload *offload,
37*4882a593Smuzhiyun unsigned int weight);
38*4882a593Smuzhiyun int can_rx_offload_add_manual(struct net_device *dev,
39*4882a593Smuzhiyun struct can_rx_offload *offload,
40*4882a593Smuzhiyun unsigned int weight);
41*4882a593Smuzhiyun int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,
42*4882a593Smuzhiyun u64 reg);
43*4882a593Smuzhiyun int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
44*4882a593Smuzhiyun int can_rx_offload_queue_sorted(struct can_rx_offload *offload,
45*4882a593Smuzhiyun struct sk_buff *skb, u32 timestamp);
46*4882a593Smuzhiyun unsigned int can_rx_offload_get_echo_skb(struct can_rx_offload *offload,
47*4882a593Smuzhiyun unsigned int idx, u32 timestamp);
48*4882a593Smuzhiyun int can_rx_offload_queue_tail(struct can_rx_offload *offload,
49*4882a593Smuzhiyun struct sk_buff *skb);
50*4882a593Smuzhiyun void can_rx_offload_del(struct can_rx_offload *offload);
51*4882a593Smuzhiyun void can_rx_offload_enable(struct can_rx_offload *offload);
52*4882a593Smuzhiyun
can_rx_offload_schedule(struct can_rx_offload * offload)53*4882a593Smuzhiyun static inline void can_rx_offload_schedule(struct can_rx_offload *offload)
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun napi_schedule(&offload->napi);
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun
can_rx_offload_disable(struct can_rx_offload * offload)58*4882a593Smuzhiyun static inline void can_rx_offload_disable(struct can_rx_offload *offload)
59*4882a593Smuzhiyun {
60*4882a593Smuzhiyun napi_disable(&offload->napi);
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun #endif /* !_CAN_RX_OFFLOAD_H */
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