4e9c9484b0
The skbs for classic CAN and CAN FD frames are allocated with seperate functions: alloc_can_skb() and alloc_canfd_skb(). In order to support CAN FD frames via the rx-offload helper, the driver itself has to allocate the skb (depending whether it received a classic CAN or CAN FD frame), as the rx-offload helper cannot know which kind of CAN frame the driver has received. This patch moves the allocation of the skb into the struct can_rx_offload::mailbox_read callbacks of the the flexcan and ti_hecc driver and adjusts the rx-offload helper accordingly. Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* linux/can/rx-offload.h
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*
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* Copyright (c) 2014 David Jander, Protonic Holland
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* Copyright (c) 2014-2017 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
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*/
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#ifndef _CAN_RX_OFFLOAD_H
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#define _CAN_RX_OFFLOAD_H
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#include <linux/netdevice.h>
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#include <linux/can.h>
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struct can_rx_offload {
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struct net_device *dev;
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struct sk_buff *(*mailbox_read)(struct can_rx_offload *offload,
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unsigned int mb, u32 *timestamp,
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bool drop);
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struct sk_buff_head skb_queue;
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u32 skb_queue_len_max;
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unsigned int mb_first;
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unsigned int mb_last;
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struct napi_struct napi;
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bool inc;
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};
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int can_rx_offload_add_timestamp(struct net_device *dev,
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struct can_rx_offload *offload);
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int can_rx_offload_add_fifo(struct net_device *dev,
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struct can_rx_offload *offload,
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unsigned int weight);
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int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,
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u64 reg);
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int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
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int can_rx_offload_queue_sorted(struct can_rx_offload *offload,
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struct sk_buff *skb, u32 timestamp);
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unsigned int can_rx_offload_get_echo_skb(struct can_rx_offload *offload,
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unsigned int idx, u32 timestamp);
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int can_rx_offload_queue_tail(struct can_rx_offload *offload,
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struct sk_buff *skb);
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void can_rx_offload_del(struct can_rx_offload *offload);
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void can_rx_offload_enable(struct can_rx_offload *offload);
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static inline void can_rx_offload_schedule(struct can_rx_offload *offload)
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{
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napi_schedule(&offload->napi);
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}
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static inline void can_rx_offload_disable(struct can_rx_offload *offload)
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{
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napi_disable(&offload->napi);
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}
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#endif /* !_CAN_RX_OFFLOAD_H */
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