net/6lowpan/nhc_ghc_ext_hop.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_HOP_IDLEN        1
   9 #define LOWPAN_GHC_EXT_HOP_ID_0         0xb0
  10 #define LOWPAN_GHC_EXT_HOP_MASK_0       0xfe
  11
  12 static void hop_ghid_setup(struct lowpan_nhc *nhc)
  13 {
  14         nhc->id[0] = LOWPAN_GHC_EXT_HOP_ID_0;
  15         nhc->idmask[0] = LOWPAN_GHC_EXT_HOP_MASK_0;
  16 }
  17
  18 LOWPAN_NHC(ghc_ext_hop, "RFC7400 Hop-by-Hop Extension Header", NEXTHDR_HOP, 0,
  19            hop_ghid_setup, LOWPAN_GHC_EXT_HOP_IDLEN, NULL, NULL);
  20
  21 module_lowpan_nhc(ghc_ext_hop);
  22 MODULE_DESCRIPTION("6LoWPAN generic header hop-by-hop extension compression");
  23 MODULE_LICENSE("GPL");