Linux 5.6-rc2
[sfrench/cifs-2.6.git] / 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");