1 /* 2 * linux/can/rx-offload.h 3 * 4 * Copyright (c) 2014 David Jander, Protonic Holland 5 * Copyright (c) 2014-2017 Pengutronix, Marc Kleine-Budde <[email protected]> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the version 2 of the GNU General Public License 9 * as published by the Free Software Foundation 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17 #ifndef _CAN_RX_OFFLOAD_H 18 #define _CAN_RX_OFFLOAD_H 19 20 #include <linux/netdevice.h> 21 #include <linux/can.h> 22 23 struct can_rx_offload { 24 struct net_device *dev; 25 26 unsigned int (*mailbox_read)(struct can_rx_offload *offload, struct can_frame *cf, 27 u32 *timestamp, unsigned int mb); 28 29 struct sk_buff_head skb_queue; 30 u32 skb_queue_len_max; 31 32 unsigned int mb_first; 33 unsigned int mb_last; 34 35 struct napi_struct napi; 36 37 bool inc; 38 }; 39 40 int can_rx_offload_add_timestamp(struct net_device *dev, struct can_rx_offload *offload); 41 int can_rx_offload_add_fifo(struct net_device *dev, struct can_rx_offload *offload, unsigned int weight); 42 int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload, 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_reset(struct can_rx_offload *offload); 51 void can_rx_offload_del(struct can_rx_offload *offload); 52 void can_rx_offload_enable(struct can_rx_offload *offload); 53 54 static inline void can_rx_offload_schedule(struct can_rx_offload *offload) 55 { 56 napi_schedule(&offload->napi); 57 } 58 59 static inline void can_rx_offload_disable(struct can_rx_offload *offload) 60 { 61 napi_disable(&offload->napi); 62 } 63 64 #endif /* !_CAN_RX_OFFLOAD_H */ 65