xref: /linux/net/6lowpan/nhc_ghc_ext_frag.c (revision f3a8b6645dc2e60d11f20c1c23afd964ff4e55ae)
1 /*
2  *	6LoWPAN Extension Header compression according to RFC7400
3  *
4  *	This program is free software; you can redistribute it and/or
5  *	modify it under the terms of the GNU General Public License
6  *	as published by the Free Software Foundation; either version
7  *	2 of the License, or (at your option) any later version.
8  */
9 
10 #include "nhc.h"
11 
12 #define LOWPAN_GHC_EXT_FRAG_IDLEN	1
13 #define LOWPAN_GHC_EXT_FRAG_ID_0	0xb4
14 #define LOWPAN_GHC_EXT_FRAG_MASK_0	0xfe
15 
16 static void frag_ghid_setup(struct lowpan_nhc *nhc)
17 {
18 	nhc->id[0] = LOWPAN_GHC_EXT_FRAG_ID_0;
19 	nhc->idmask[0] = LOWPAN_GHC_EXT_FRAG_MASK_0;
20 }
21 
22 LOWPAN_NHC(ghc_ext_frag, "RFC7400 Fragmentation Extension Header",
23 	   NEXTHDR_FRAGMENT, 0, frag_ghid_setup,
24 	   LOWPAN_GHC_EXT_FRAG_IDLEN, NULL, NULL);
25 
26 module_lowpan_nhc(ghc_ext_frag);
27 MODULE_DESCRIPTION("6LoWPAN generic header fragmentation extension compression");
28 MODULE_LICENSE("GPL");
29