net/6lowpan/nhc_ghc_ext_frag.c

   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");