xref: /OK3568_Linux_fs/kernel/net/6lowpan/nhc_ghc_ext_frag.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  *	6LoWPAN Extension Header compression according to RFC7400
4*4882a593Smuzhiyun  */
5*4882a593Smuzhiyun 
6*4882a593Smuzhiyun #include "nhc.h"
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #define LOWPAN_GHC_EXT_FRAG_IDLEN	1
9*4882a593Smuzhiyun #define LOWPAN_GHC_EXT_FRAG_ID_0	0xb4
10*4882a593Smuzhiyun #define LOWPAN_GHC_EXT_FRAG_MASK_0	0xfe
11*4882a593Smuzhiyun 
frag_ghid_setup(struct lowpan_nhc * nhc)12*4882a593Smuzhiyun static void frag_ghid_setup(struct lowpan_nhc *nhc)
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun 	nhc->id[0] = LOWPAN_GHC_EXT_FRAG_ID_0;
15*4882a593Smuzhiyun 	nhc->idmask[0] = LOWPAN_GHC_EXT_FRAG_MASK_0;
16*4882a593Smuzhiyun }
17*4882a593Smuzhiyun 
18*4882a593Smuzhiyun LOWPAN_NHC(ghc_ext_frag, "RFC7400 Fragmentation Extension Header",
19*4882a593Smuzhiyun 	   NEXTHDR_FRAGMENT, 0, frag_ghid_setup,
20*4882a593Smuzhiyun 	   LOWPAN_GHC_EXT_FRAG_IDLEN, NULL, NULL);
21*4882a593Smuzhiyun 
22*4882a593Smuzhiyun module_lowpan_nhc(ghc_ext_frag);
23*4882a593Smuzhiyun MODULE_DESCRIPTION("6LoWPAN generic header fragmentation extension compression");
24*4882a593Smuzhiyun MODULE_LICENSE("GPL");
25