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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* linux/can/rx-offload.h
*
* Copyright (c) 2014 David Jander, Protonic Holland
* Copyright (c) 2014-2017, 2023 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
*/
#ifndef _CAN_RX_OFFLOAD_H
#define _CAN_RX_OFFLOAD_H
#include <linux/netdevice.h>
#include <linux/can.h>
struct can_rx_offload {
struct net_device *dev;
struct sk_buff *(*mailbox_read)(struct can_rx_offload *offload,
unsigned int mb, u32 *timestamp,
bool drop);
struct sk_buff_head skb_queue;
struct sk_buff_head skb_irq_queue;
u32 skb_queue_len_max;
unsigned int mb_first;
unsigned int mb_last;
struct napi_struct napi;
bool inc;
};
int can_rx_offload_add_timestamp(struct net_device *dev,
struct can_rx_offload *offload);
int can_rx_offload_add_fifo(struct net_device *dev,
struct can_rx_offload *offload,
unsigned int weight);
int can_rx_offload_add_manual(struct net_device *dev,
struct can_rx_offload *offload,
unsigned int weight);
int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,
u64 reg);
int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
int can_rx_offload_queue_timestamp(struct can_rx_offload *offload,
struct sk_buff *skb, u32 timestamp);
unsigned int can_rx_offload_get_echo_skb_queue_timestamp(struct can_rx_offload *offload,
unsigned int idx, u32 timestamp,
unsigned int *frame_len_ptr);
int can_rx_offload_queue_tail(struct can_rx_offload *offload,
struct sk_buff *skb);
unsigned int can_rx_offload_get_echo_skb_queue_tail(struct can_rx_offload *offload,
unsigned int idx,
unsigned int *frame_len_ptr);
void can_rx_offload_irq_finish(struct can_rx_offload *offload);
void can_rx_offload_threaded_irq_finish(struct can_rx_offload *offload);
void can_rx_offload_del(struct can_rx_offload *offload);
void can_rx_offload_enable(struct can_rx_offload *offload);
static inline void can_rx_offload_disable(struct can_rx_offload *offload)
{
napi_disable(&offload->napi);
}
#endif /* !_CAN_RX_OFFLOAD_H */
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