linux/net/802/stp.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *	STP SAP demux
 *
 *	Copyright (c) 2008 Patrick McHardy <[email protected]>
 */
#include <linux/mutex.h>
#include <linux/skbuff.h>
#include <linux/etherdevice.h>
#include <linux/llc.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <net/llc.h>
#include <net/llc_pdu.h>
#include <net/stp.h>

/* 01:80:c2:00:00:20 - 01:80:c2:00:00:2F */
#define GARP_ADDR_MIN …
#define GARP_ADDR_MAX …
#define GARP_ADDR_RANGE …

static const struct stp_proto __rcu *garp_protos[GARP_ADDR_RANGE + 1] __read_mostly;
static const struct stp_proto __rcu *stp_proto __read_mostly;

static struct llc_sap *sap __read_mostly;
static unsigned int sap_registered;
static DEFINE_MUTEX(stp_proto_mutex);

/* Called under rcu_read_lock from LLC */
static int stp_pdu_rcv(struct sk_buff *skb, struct net_device *dev,
		       struct packet_type *pt, struct net_device *orig_dev)
{ … }

int stp_proto_register(const struct stp_proto *proto)
{ … }
EXPORT_SYMBOL_GPL(…);

void stp_proto_unregister(const struct stp_proto *proto)
{ … }
EXPORT_SYMBOL_GPL(…);

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