Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxx>
---
net/6lowpan/Kconfig | 5 +++++
net/6lowpan/Makefile | 3 +++
net/6lowpan/nhc_ghc_extension_header.c | 27 +++++++++++++++++++++++++++
3 files changed, 35 insertions(+)
create mode 100644 net/6lowpan/nhc_ghc_extension_header.c
diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index 6af7a46..f541f50 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -59,4 +59,9 @@ config 6LOWPAN_NHC_UDP
---help---
6LoWPAN IPv6 UDP Header compression according to RFC6282.
+config 6LOWPAN_GHC_EXTENSION_HEADER
+ tristate "GHC Extension Header Support"
+ default y
+ ---help---
+
endif
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index c6ffc55..2b42bd0 100644
--- a/net/6lowpan/Makefile
+++ b/net/6lowpan/Makefile
@@ -10,3 +10,6 @@ obj-$(CONFIG_6LOWPAN_NHC_IPV6) += nhc_ipv6.o
obj-$(CONFIG_6LOWPAN_NHC_MOBILITY) += nhc_mobility.o
obj-$(CONFIG_6LOWPAN_NHC_ROUTING) += nhc_routing.o
obj-$(CONFIG_6LOWPAN_NHC_UDP) += nhc_udp.o
+
+#rfc7400 ghcs
+obj-$(CONFIG_6LOWPAN_GHC_EXTENSION_HEADER) += nhc_ghc_extension_header.o
diff --git a/net/6lowpan/nhc_ghc_extension_header.c b/net/6lowpan/nhc_ghc_extension_header.c
new file mode 100644
index 0000000..eeeabfa
--- /dev/null
+++ b/net/6lowpan/nhc_ghc_extension_header.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_EXTENSION_HEADER_IDLEN 1
+#define LOWPAN_GHC_EXTENSION_HEADER_ID_0 0xb0
+#define LOWPAN_GHC_EXTENSION_HEADER_MASK_0 0xf8
+
+static void ext_ghid_setup(struct lowpan_nhc *nhc)
+{
+ nhc->id[0] = LOWPAN_GHC_EXTENSION_HEADER_ID_0;
+ nhc->idmask[0] = LOWPAN_GHC_EXTENSION_HEADER_MASK_0;
+}
+
+LOWPAN_NHC(ghc_extension_header, "RFC7400 Extension Header", NEXTHDR_HOP, 0,
+ ext_ghid_setup, LOWPAN_GHC_EXTENSION_HEADER_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(ghc_extension_header);
+MODULE_DESCRIPTION("6LoWPAN generic header RFC7400 Extension Header compression");
+MODULE_LICENSE("GPL");
--
2.4.3
--
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