linux/drivers/net/can/spi/mcp251xfd/mcp251xfd-tx.c

// SPDX-License-Identifier: GPL-2.0
//
// mcp251xfd - Microchip MCP251xFD Family CAN controller driver
//
// Copyright (c) 2019, 2020, 2021 Pengutronix,
//               Marc Kleine-Budde <[email protected]>
//
// Based on:
//
// CAN bus driver for Microchip 25XXFD CAN Controller with SPI Interface
//
// Copyright (c) 2019 Martin Sperl <[email protected]>
//

#include <asm/unaligned.h>
#include <linux/bitfield.h>

#include "mcp251xfd.h"

static inline struct
mcp251xfd_tx_obj *mcp251xfd_get_tx_obj_next(struct mcp251xfd_tx_ring *tx_ring)
{ … }

static void
mcp251xfd_tx_obj_from_skb(const struct mcp251xfd_priv *priv,
			  struct mcp251xfd_tx_obj *tx_obj,
			  const struct sk_buff *skb,
			  unsigned int seq)
{ … }

static void mcp251xfd_tx_failure_drop(const struct mcp251xfd_priv *priv,
				      struct mcp251xfd_tx_ring *tx_ring,
				      int err)
{ … }

void mcp251xfd_tx_obj_write_sync(struct work_struct *work)
{ … }

static int mcp251xfd_tx_obj_write(const struct mcp251xfd_priv *priv,
				  struct mcp251xfd_tx_obj *tx_obj)
{ … }

static bool mcp251xfd_tx_busy(const struct mcp251xfd_priv *priv,
			      struct mcp251xfd_tx_ring *tx_ring)
{ … }

static bool mcp251xfd_work_busy(struct work_struct *work)
{ … }

netdev_tx_t mcp251xfd_start_xmit(struct sk_buff *skb,
				 struct net_device *ndev)
{ … }