1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *	6LoWPAN Extension Header compression according to RFC7400
4  */
5 
6 #include "nhc.h"
7 
8 #define LOWPAN_GHC_EXT_FRAG_IDLEN	1
9 #define LOWPAN_GHC_EXT_FRAG_ID_0	0xb4
10 #define LOWPAN_GHC_EXT_FRAG_MASK_0	0xfe
11 
12 static void frag_ghid_setup(struct lowpan_nhc *nhc)
13 {
14 	nhc->id[0] = LOWPAN_GHC_EXT_FRAG_ID_0;
15 	nhc->idmask[0] = LOWPAN_GHC_EXT_FRAG_MASK_0;
16 }
17 
18 LOWPAN_NHC(ghc_ext_frag, "RFC7400 Fragmentation Extension Header",
19 	   NEXTHDR_FRAGMENT, 0, frag_ghid_setup,
20 	   LOWPAN_GHC_EXT_FRAG_IDLEN, NULL, NULL);
21 
22 module_lowpan_nhc(ghc_ext_frag);
23 MODULE_DESCRIPTION("6LoWPAN generic header fragmentation extension compression");
24 MODULE_LICENSE("GPL");
25