OpenCloudOS-Kernel/net/6lowpan/nhc_ghc_ext_frag.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *	6LoWPAN Extension Header compression according to RFC7400
 */

#include "nhc.h"

#define LOWPAN_GHC_EXT_FRAG_IDLEN	1
#define LOWPAN_GHC_EXT_FRAG_ID_0	0xb4
#define LOWPAN_GHC_EXT_FRAG_MASK_0	0xfe

static void frag_ghid_setup(struct lowpan_nhc *nhc)
{
	nhc->id[0] = LOWPAN_GHC_EXT_FRAG_ID_0;
	nhc->idmask[0] = LOWPAN_GHC_EXT_FRAG_MASK_0;
}

LOWPAN_NHC(ghc_ext_frag, "RFC7400 Fragmentation Extension Header",
	   NEXTHDR_FRAGMENT, 0, frag_ghid_setup,
	   LOWPAN_GHC_EXT_FRAG_IDLEN, NULL, NULL);

module_lowpan_nhc(ghc_ext_frag);
MODULE_DESCRIPTION("6LoWPAN generic header fragmentation extension compression");
MODULE_LICENSE("GPL");