af_can.h

/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
/* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
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 * software may be distributed under the terms of the GNU General
 * Public License ("GPL") version 2, in which case the provisions of the
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#ifndef AF_CAN_H
#define AF_CAN_H

#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/list.h>
#include <linux/rcupdate.h>
#include <linux/can.h>

/* af_can rx dispatcher structures */

struct receiver {
	struct hlist_node list;
	canid_t can_id;
	canid_t mask;
	unsigned long matches;
	void (*func)(struct sk_buff *skb, void *data);
	void *data;
	char *ident;
	struct sock *sk;
	struct rcu_head rcu;
};

/* statistic structures */

/* can be reset e.g. by can_init_stats() */
struct can_pkg_stats {
	unsigned long jiffies_init;

	atomic_long_t rx_frames;
	atomic_long_t tx_frames;
	atomic_long_t matches;

	unsigned long total_rx_rate;
	unsigned long total_tx_rate;
	unsigned long total_rx_match_ratio;

	unsigned long current_rx_rate;
	unsigned long current_tx_rate;
	unsigned long current_rx_match_ratio;

	unsigned long max_rx_rate;
	unsigned long max_tx_rate;
	unsigned long max_rx_match_ratio;

	atomic_long_t rx_frames_delta;
	atomic_long_t tx_frames_delta;
	atomic_long_t matches_delta;
};

/* persistent statistics */
struct can_rcv_lists_stats {
	unsigned long stats_reset;
	unsigned long user_reset;
	unsigned long rcv_entries;
	unsigned long rcv_entries_max;
};

/* function prototypes for the CAN networklayer procfs (proc.c) */
void can_init_proc(struct net *net);
void can_remove_proc(struct net *net);
void can_stat_update(struct timer_list *t);

#endif /* AF_CAN_H */