linux/net/sched/em_canid.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * em_canid.c  Ematch rule to match CAN frames according to their CAN IDs
 *
 * Idea:       Oliver Hartkopp <[email protected]>
 * Copyright:  (c) 2011 Czech Technical University in Prague
 *             (c) 2011 Volkswagen Group Research
 * Authors:    Michal Sojka <[email protected]>
 *             Pavel Pisa <[email protected]>
 *             Rostislav Lisovy <[email protected]>
 * Funded by:  Volkswagen Group Research
 */

#include <linux/slab.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/skbuff.h>
#include <net/pkt_cls.h>
#include <linux/can.h>

#define EM_CAN_RULES_MAX …

struct canid_match { … };

/**
 * em_canid_get_id() - Extracts Can ID out of the sk_buff structure.
 * @skb: buffer to extract Can ID from
 */
static canid_t em_canid_get_id(struct sk_buff *skb)
{ … }

static void em_canid_sff_match_add(struct canid_match *cm, u32 can_id,
					u32 can_mask)
{ … }

static inline struct canid_match *em_canid_priv(struct tcf_ematch *m)
{ … }

static int em_canid_match(struct sk_buff *skb, struct tcf_ematch *m,
			 struct tcf_pkt_info *info)
{ … }

static int em_canid_change(struct net *net, void *data, int len,
			  struct tcf_ematch *m)
{ … }

static void em_canid_destroy(struct tcf_ematch *m)
{ … }

static int em_canid_dump(struct sk_buff *skb, struct tcf_ematch *m)
{ … }

static struct tcf_ematch_ops em_canid_ops = …;

static int __init init_em_canid(void)
{ … }

static void __exit exit_em_canid(void)
{ … }

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;

module_init(…) …;
module_exit(exit_em_canid);

MODULE_ALIAS_TCF_EMATCH(…);