linux/net/6lowpan/nhc.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *	6LoWPAN next header compression
 *
 *	Authors:
 *	Alexander Aring		<[email protected]>
 */

#include <linux/netdevice.h>

#include <net/ipv6.h>

#include "nhc.h"

static const struct lowpan_nhc *lowpan_nexthdr_nhcs[NEXTHDR_MAX + 1];
static DEFINE_SPINLOCK(lowpan_nhc_lock);

static const struct lowpan_nhc *lowpan_nhc_by_nhcid(struct sk_buff *skb)
{ … }

int lowpan_nhc_check_compression(struct sk_buff *skb,
				 const struct ipv6hdr *hdr, u8 **hc_ptr)
{ … }

int lowpan_nhc_do_compression(struct sk_buff *skb, const struct ipv6hdr *hdr,
			      u8 **hc_ptr)
{ … }

int lowpan_nhc_do_uncompression(struct sk_buff *skb,
				const struct net_device *dev,
				struct ipv6hdr *hdr)
{ … }

int lowpan_nhc_add(const struct lowpan_nhc *nhc)
{ … }
EXPORT_SYMBOL(…);

void lowpan_nhc_del(const struct lowpan_nhc *nhc)
{ … }
EXPORT_SYMBOL(…);