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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * linux/can/rx-offload.h4 *5 * Copyright (c) 2014 David Jander, Protonic Holland6 * Copyright (c) 2014-2017, 2023 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>7 */8 9#ifndef _CAN_RX_OFFLOAD_H10#define _CAN_RX_OFFLOAD_H11 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 struct sk_buff_head skb_irq_queue;24 u32 skb_queue_len_max;25 26 unsigned int mb_first;27 unsigned int mb_last;28 29 struct napi_struct napi;30 31 bool inc;32};33 34int can_rx_offload_add_timestamp(struct net_device *dev,35 struct can_rx_offload *offload);36int can_rx_offload_add_fifo(struct net_device *dev,37 struct can_rx_offload *offload,38 unsigned int weight);39int can_rx_offload_add_manual(struct net_device *dev,40 struct can_rx_offload *offload,41 unsigned int weight);42int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,43 u64 reg);44int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);45int can_rx_offload_queue_timestamp(struct can_rx_offload *offload,46 struct sk_buff *skb, u32 timestamp);47unsigned int can_rx_offload_get_echo_skb_queue_timestamp(struct can_rx_offload *offload,48 unsigned int idx, u32 timestamp,49 unsigned int *frame_len_ptr);50int can_rx_offload_queue_tail(struct can_rx_offload *offload,51 struct sk_buff *skb);52unsigned int can_rx_offload_get_echo_skb_queue_tail(struct can_rx_offload *offload,53 unsigned int idx,54 unsigned int *frame_len_ptr);55void can_rx_offload_irq_finish(struct can_rx_offload *offload);56void can_rx_offload_threaded_irq_finish(struct can_rx_offload *offload);57void can_rx_offload_del(struct can_rx_offload *offload);58void can_rx_offload_enable(struct can_rx_offload *offload);59 60static inline void can_rx_offload_disable(struct can_rx_offload *offload)61{62 napi_disable(&offload->napi);63}64 65#endif /* !_CAN_RX_OFFLOAD_H */66