| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * linux/can/rx-offload.h |
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| 4 | * |
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| 5 | * Copyright (c) 2014 David Jander, Protonic Holland |
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| 6 | * Copyright (c) 2014-2017, 2023 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de> |
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| 7 | */ |
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| 8 | |
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| 9 | #ifndef _CAN_RX_OFFLOAD_H |
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| 10 | #define _CAN_RX_OFFLOAD_H |
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| 11 | |
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| 12 | #include <linux/netdevice.h> |
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| 13 | #include <linux/can.h> |
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| 14 | |
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| 15 | struct can_rx_offload { |
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| 16 | struct net_device *dev; |
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| 17 | |
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| 18 | struct sk_buff *(*mailbox_read)(struct can_rx_offload *offload, |
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| 19 | unsigned int mb, u32 *timestamp, |
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| 20 | bool drop); |
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| 21 | |
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| 22 | struct sk_buff_head skb_queue; |
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| 23 | struct sk_buff_head skb_irq_queue; |
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| 24 | u32 skb_queue_len_max; |
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| 25 | |
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| 26 | unsigned int mb_first; |
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| 27 | unsigned int mb_last; |
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| 28 | |
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| 29 | struct napi_struct napi; |
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| 30 | |
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| 31 | bool inc; |
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| 32 | }; |
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| 33 | |
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| 34 | int can_rx_offload_add_timestamp(struct net_device *dev, |
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| 35 | struct can_rx_offload *offload); |
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| 36 | int can_rx_offload_add_fifo(struct net_device *dev, |
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| 37 | struct can_rx_offload *offload, |
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| 38 | unsigned int weight); |
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| 39 | int can_rx_offload_add_manual(struct net_device *dev, |
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| 40 | struct can_rx_offload *offload, |
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| 41 | unsigned int weight); |
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| 42 | int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload, |
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| 43 | u64 reg); |
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| 44 | int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload); |
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| 45 | int can_rx_offload_queue_timestamp(struct can_rx_offload *offload, |
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| 46 | struct sk_buff *skb, u32 timestamp); |
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| 47 | unsigned int can_rx_offload_get_echo_skb_queue_timestamp(struct can_rx_offload *offload, |
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| 48 | unsigned int idx, u32 timestamp, |
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| 49 | unsigned int *frame_len_ptr); |
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| 50 | int can_rx_offload_queue_tail(struct can_rx_offload *offload, |
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| 51 | struct sk_buff *skb); |
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| 52 | unsigned int can_rx_offload_get_echo_skb_queue_tail(struct can_rx_offload *offload, |
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| 53 | unsigned int idx, |
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| 54 | unsigned int *frame_len_ptr); |
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| 55 | void can_rx_offload_irq_finish(struct can_rx_offload *offload); |
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| 56 | void can_rx_offload_threaded_irq_finish(struct can_rx_offload *offload); |
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| 57 | void can_rx_offload_del(struct can_rx_offload *offload); |
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| 58 | void can_rx_offload_enable(struct can_rx_offload *offload); |
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| 59 | |
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| 60 | static inline void can_rx_offload_disable(struct can_rx_offload *offload) |
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| 61 | { |
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| 62 | napi_disable(n: &offload->napi); |
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| 63 | } |
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| 64 | |
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| 65 | #endif /* !_CAN_RX_OFFLOAD_H */ |
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| 66 | |
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