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6lowpan: add nhc module for GHC ICMPv6 detection
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Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Stefan Schmidt authored and Marcel Holtmann committed Dec 10, 2015
1 parent 70cc867 commit c39da3b
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5 changes: 5 additions & 0 deletions net/6lowpan/Kconfig
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Expand Up @@ -70,4 +70,9 @@ config 6LOWPAN_GHC_UDP
---help---
6LoWPAN IPv6 UDP generic header compression according to RFC7400.

config 6LOWPAN_GHC_ICMPV6
tristate "GHC ICMPv6 Support"
---help---
6LoWPAN IPv6 ICMPv6 generic header compression according to RFC7400.

endif
1 change: 1 addition & 0 deletions net/6lowpan/Makefile
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Expand Up @@ -14,3 +14,4 @@ obj-$(CONFIG_6LOWPAN_NHC_UDP) += nhc_udp.o
#rfc7400 ghcs
obj-$(CONFIG_6LOWPAN_GHC_EXT_HDR_HOP) += nhc_ghc_ext_hop.o
obj-$(CONFIG_6LOWPAN_GHC_UDP) += nhc_ghc_udp.o
obj-$(CONFIG_6LOWPAN_GHC_ICMPV6) += nhc_ghc_icmpv6.o
27 changes: 27 additions & 0 deletions net/6lowpan/nhc_ghc_icmpv6.c
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@@ -0,0 +1,27 @@
/*
* 6LoWPAN ICMPv6 compression according to RFC7400
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/

#include "nhc.h"

#define LOWPAN_GHC_ICMPV6_IDLEN 1
#define LOWPAN_GHC_ICMPV6_ID_0 0xdf
#define LOWPAN_GHC_ICMPV6_MASK_0 0xff

static void icmpv6_ghid_setup(struct lowpan_nhc *nhc)
{
nhc->id[0] = LOWPAN_GHC_ICMPV6_ID_0;
nhc->idmask[0] = LOWPAN_GHC_ICMPV6_MASK_0;
}

LOWPAN_NHC(ghc_icmpv6, "RFC7400 ICMPv6", NEXTHDR_ICMP, 0,
icmpv6_ghid_setup, LOWPAN_GHC_ICMPV6_IDLEN, NULL, NULL);

module_lowpan_nhc(ghc_icmpv6);
MODULE_DESCRIPTION("6LoWPAN generic header ICMPv6 compression");
MODULE_LICENSE("GPL");

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