6lowpan: nhc: add other known rfc6282 compressions

This patch adds other known rfc6282 compression formats to the nhc
framework. These compression formats are known but not implemented yet.
For now this is useful to printout a warning which compression format
isn't supported.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Martin Townsend <mtownsend1973@gmail.com>
Reviewed-by: Stefan Schmidt <s.schmidt@samsung.com>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

9 files changed, 213 insertions, 0 deletions

diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index e45c963..7fa0f38 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -14,6 +14,44 @@ menuconfig 6LOWPAN_NHC
 
 if 6LOWPAN_NHC
 
+config 6LOWPAN_NHC_DEST
+	tristate "Destination Options Header Support"
+	default y
+	---help---
+	  6LoWPAN IPv6 Destination Options Header compression according to
+	  RFC6282.
+
+config 6LOWPAN_NHC_FRAGMENT
+	tristate "Fragment Header Support"
+	default y
+	---help---
+	  6LoWPAN IPv6 Fragment Header compression according to RFC6282.
+
+config 6LOWPAN_NHC_HOP
+	tristate "Hop-by-Hop Options Header Support"
+	default y
+	---help---
+	  6LoWPAN IPv6 Hop-by-Hop Options Header compression according to
+	  RFC6282.
+
+config 6LOWPAN_NHC_IPV6
+	tristate "IPv6 Header Support"
+	default y
+	---help---
+	  6LoWPAN IPv6 Header compression according to RFC6282.
+
+config 6LOWPAN_NHC_MOBILITY
+	tristate "Mobility Header Support"
+	default y
+	---help---
+	  6LoWPAN IPv6 Mobility Header compression according to RFC6282.
+
+config 6LOWPAN_NHC_ROUTING
+	tristate "Routing Header Support"
+	default y
+	---help---
+	  6LoWPAN IPv6 Routing Header compression according to RFC6282.
+
 config 6LOWPAN_NHC_UDP
 	tristate "UDP Header Support"
 	default y
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index abf551d..eb8baa7 100644
--- a/net/6lowpan/Makefile
+++ b/net/6lowpan/Makefile
@@ -3,4 +3,10 @@ obj-$(CONFIG_6LOWPAN) += 6lowpan.o
 6lowpan-y := iphc.o nhc.o
 
 #rfc6282 nhcs
+obj-$(CONFIG_6LOWPAN_NHC_DEST) += nhc_dest.o
+obj-$(CONFIG_6LOWPAN_NHC_FRAGMENT) += nhc_fragment.o
+obj-$(CONFIG_6LOWPAN_NHC_HOP) += nhc_hop.o
+obj-$(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
diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c
index 390bdd9..94a375c 100644
--- a/net/6lowpan/iphc.c
+++ b/net/6lowpan/iphc.c
@@ -613,6 +613,12 @@ EXPORT_SYMBOL_GPL(lowpan_header_compress);
 
 static int __init lowpan_module_init(void)
 {
+	request_module_nowait("nhc_dest");
+	request_module_nowait("nhc_fragment");
+	request_module_nowait("nhc_hop");
+	request_module_nowait("nhc_ipv6");
+	request_module_nowait("nhc_mobility");
+	request_module_nowait("nhc_routing");
 	request_module_nowait("nhc_udp");
 
 	return 0;
diff --git a/net/6lowpan/nhc_dest.c b/net/6lowpan/nhc_dest.c
new file mode 100644
index 0000000..0b292c9
--- /dev/null
+++ b/net/6lowpan/nhc_dest.c
@@ -0,0 +1,28 @@
+/*
+ *	6LoWPAN IPv6 Destination Options Header compression according to
+ *	RFC6282
+ *
+ *	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_NHC_DEST_IDLEN	1
+#define LOWPAN_NHC_DEST_ID_0	0xe6
+#define LOWPAN_NHC_DEST_MASK_0	0xfe
+
+static void dest_nhid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_NHC_DEST_ID_0;
+	nhc->idmask[0] = LOWPAN_NHC_DEST_MASK_0;
+}
+
+LOWPAN_NHC(nhc_dest, "RFC6282 Destination Options", NEXTHDR_DEST, 0,
+	   dest_nhid_setup, LOWPAN_NHC_DEST_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(nhc_dest);
+MODULE_DESCRIPTION("6LoWPAN next header RFC6282 Destination Options compression");
+MODULE_LICENSE("GPL");
diff --git a/net/6lowpan/nhc_fragment.c b/net/6lowpan/nhc_fragment.c
new file mode 100644
index 0000000..473dbc5
--- /dev/null
+++ b/net/6lowpan/nhc_fragment.c
@@ -0,0 +1,27 @@
+/*
+ *	6LoWPAN IPv6 Fragment Header compression according to RFC6282
+ *
+ *	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_NHC_FRAGMENT_IDLEN	1
+#define LOWPAN_NHC_FRAGMENT_ID_0	0xe4
+#define LOWPAN_NHC_FRAGMENT_MASK_0	0xfe
+
+static void fragment_nhid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_NHC_FRAGMENT_ID_0;
+	nhc->idmask[0] = LOWPAN_NHC_FRAGMENT_MASK_0;
+}
+
+LOWPAN_NHC(nhc_fragment, "RFC6282 Fragment", NEXTHDR_FRAGMENT, 0,
+	   fragment_nhid_setup, LOWPAN_NHC_FRAGMENT_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(nhc_fragment);
+MODULE_DESCRIPTION("6LoWPAN next header RFC6282 Fragment compression");
+MODULE_LICENSE("GPL");
diff --git a/net/6lowpan/nhc_hop.c b/net/6lowpan/nhc_hop.c
new file mode 100644
index 0000000..1eb66be
--- /dev/null
+++ b/net/6lowpan/nhc_hop.c
@@ -0,0 +1,27 @@
+/*
+ *	6LoWPAN IPv6 Hop-by-Hop Options Header compression according to RFC6282
+ *
+ *	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_NHC_HOP_IDLEN	1
+#define LOWPAN_NHC_HOP_ID_0	0xe0
+#define LOWPAN_NHC_HOP_MASK_0	0xfe
+
+static void hop_nhid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_NHC_HOP_ID_0;
+	nhc->idmask[0] = LOWPAN_NHC_HOP_MASK_0;
+}
+
+LOWPAN_NHC(nhc_hop, "RFC6282 Hop-by-Hop Options", NEXTHDR_HOP, 0,
+	   hop_nhid_setup, LOWPAN_NHC_HOP_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(nhc_hop);
+MODULE_DESCRIPTION("6LoWPAN next header RFC6282 Hop-by-Hop Options compression");
+MODULE_LICENSE("GPL");
diff --git a/net/6lowpan/nhc_ipv6.c b/net/6lowpan/nhc_ipv6.c
new file mode 100644
index 0000000..2313d16
--- /dev/null
+++ b/net/6lowpan/nhc_ipv6.c
@@ -0,0 +1,27 @@
+/*
+ *	6LoWPAN IPv6 Header compression according to RFC6282
+ *
+ *	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_NHC_IPV6_IDLEN	1
+#define LOWPAN_NHC_IPV6_ID_0	0xee
+#define LOWPAN_NHC_IPV6_MASK_0	0xfe
+
+static void ipv6_nhid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_NHC_IPV6_ID_0;
+	nhc->idmask[0] = LOWPAN_NHC_IPV6_MASK_0;
+}
+
+LOWPAN_NHC(nhc_ipv6, "RFC6282 IPv6", NEXTHDR_IPV6, 0, ipv6_nhid_setup,
+	   LOWPAN_NHC_IPV6_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(nhc_ipv6);
+MODULE_DESCRIPTION("6LoWPAN next header RFC6282 IPv6 compression");
+MODULE_LICENSE("GPL");
diff --git a/net/6lowpan/nhc_mobility.c b/net/6lowpan/nhc_mobility.c
new file mode 100644
index 0000000..60d3f38
--- /dev/null
+++ b/net/6lowpan/nhc_mobility.c
@@ -0,0 +1,27 @@
+/*
+ *	6LoWPAN IPv6 Mobility Header compression according to RFC6282
+ *
+ *	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_NHC_MOBILITY_IDLEN	1
+#define LOWPAN_NHC_MOBILITY_ID_0	0xe8
+#define LOWPAN_NHC_MOBILITY_MASK_0	0xfe
+
+static void mobility_nhid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_NHC_MOBILITY_ID_0;
+	nhc->idmask[0] = LOWPAN_NHC_MOBILITY_MASK_0;
+}
+
+LOWPAN_NHC(nhc_mobility, "RFC6282 Mobility", NEXTHDR_MOBILITY, 0,
+	   mobility_nhid_setup, LOWPAN_NHC_MOBILITY_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(nhc_mobility);
+MODULE_DESCRIPTION("6LoWPAN next header RFC6282 Mobility compression");
+MODULE_LICENSE("GPL");
diff --git a/net/6lowpan/nhc_routing.c b/net/6lowpan/nhc_routing.c
new file mode 100644
index 0000000..c393280
--- /dev/null
+++ b/net/6lowpan/nhc_routing.c
@@ -0,0 +1,27 @@
+/*
+ *	6LoWPAN IPv6 Routing Header compression according to RFC6282
+ *
+ *	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_NHC_ROUTING_IDLEN	1
+#define LOWPAN_NHC_ROUTING_ID_0		0xe2
+#define LOWPAN_NHC_ROUTING_MASK_0	0xfe
+
+static void routing_nhid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_NHC_ROUTING_ID_0;
+	nhc->idmask[0] = LOWPAN_NHC_ROUTING_MASK_0;
+}
+
+LOWPAN_NHC(nhc_routing, "RFC6282 Routing", NEXTHDR_ROUTING, 0,
+	   routing_nhid_setup, LOWPAN_NHC_ROUTING_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(nhc_routing);
+MODULE_DESCRIPTION("6LoWPAN next header RFC6282 Routing compression");
+MODULE_LICENSE("GPL");