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 53 static inline void can_rx_offload_schedule(struct can_rx_offload *offload) 54 { 55 napi_schedule(&offload->napi); 56 } 57 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