From 20616a5a1e3bb47c385c6d5f27520e7a3cc82864 Mon Sep 17 00:00:00 2001 From: Stefan Schmidt Date: Wed, 9 Dec 2015 22:46:26 +0100 Subject: [PATCH] 6lowpan: add nhc module for GHC destination extension header detection Acked-by: Jukka Rissanen Signed-off-by: Stefan Schmidt Signed-off-by: Alexander Aring Signed-off-by: Marcel Holtmann --- net/6lowpan/Kconfig | 6 ++++++ net/6lowpan/Makefile | 1 + net/6lowpan/nhc_ghc_ext_dest.c | 27 +++++++++++++++++++++++++++ 3 files changed, 34 insertions(+) create mode 100644 net/6lowpan/nhc_ghc_ext_dest.c diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig index 0a3f5a8b0f6d..e5184e65d4d3 100644 --- a/net/6lowpan/Kconfig +++ b/net/6lowpan/Kconfig @@ -75,4 +75,10 @@ config 6LOWPAN_GHC_ICMPV6 ---help--- 6LoWPAN IPv6 ICMPv6 generic header compression according to RFC7400. +config 6LOWPAN_GHC_EXT_HDR_DEST + tristate "GHC Destination Options Header Support" + ---help--- + 6LoWPAN IPv6 destination option generic header compression according + to RFC7400. + endif diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile index 86af3fd141a1..fc4bac00bd20 100644 --- a/net/6lowpan/Makefile +++ b/net/6lowpan/Makefile @@ -15,3 +15,4 @@ obj-$(CONFIG_6LOWPAN_NHC_UDP) += nhc_udp.o obj-$(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 +obj-$(CONFIG_6LOWPAN_GHC_EXT_HDR_DEST) += nhc_ghc_ext_dest.o diff --git a/net/6lowpan/nhc_ghc_ext_dest.c b/net/6lowpan/nhc_ghc_ext_dest.c new file mode 100644 index 000000000000..9887b3a15348 --- /dev/null +++ b/net/6lowpan/nhc_ghc_ext_dest.c @@ -0,0 +1,27 @@ +/* + * 6LoWPAN Extension Header 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_EXT_DEST_IDLEN 1 +#define LOWPAN_GHC_EXT_DEST_ID_0 0xb6 +#define LOWPAN_GHC_EXT_DEST_MASK_0 0xfe + +static void dest_ghid_setup(struct lowpan_nhc *nhc) +{ + nhc->id[0] = LOWPAN_GHC_EXT_DEST_ID_0; + nhc->idmask[0] = LOWPAN_GHC_EXT_DEST_MASK_0; +} + +LOWPAN_NHC(ghc_ext_dest, "RFC7400 Destination Extension Header", NEXTHDR_DEST, + 0, dest_ghid_setup, LOWPAN_GHC_EXT_DEST_IDLEN, NULL, NULL); + +module_lowpan_nhc(ghc_ext_dest); +MODULE_DESCRIPTION("6LoWPAN generic header destination extension compression"); +MODULE_LICENSE("GPL"); -- 2.20.1