[PATCH bluetooth-next 00/10] 6lowpan: pending patches

[PATCH bluetooth-next 00/10] 6lowpan: pending patches

[Alexander Aring]

Hi,

these are the current pending patches for 6lowpan based on bluetooth-next.
It contains the following new features:
 - per interface debugfs support, useful to add settings to offers a
   fast/simple userspace api for debugging.
 - register of available NHC compression by IANA, see [0].
 - Adding "ipv6_addr_prefix_copy" functionality for upcoming IPHC stateful
   compression.

- Alex

[0] https://www.iana.org/assignments/_6lowpan-parameters/_6lowpan-parameters.xhtml#lowpan_nhc

Alexander Aring (3):
  6lowpan: add lowpan dev register helpers
  6lowpan: add debugfs support
  ipv6: add ipv6_addr_prefix_copy

Stefan Schmidt (7):
  6lowpan: clarify Kconfig entries for upcoming GHC support
  6lowpan: add nhc module for GHC hop-by-hopextension header detection
  6lowpan: add nhc module for GHC UDP detection
  6lowpan: add nhc module for GHC ICMPv6 detection
  6lowpan: add nhc module for GHC destination extension header detection
  6lowpan: add nhc module for GHC fragmentation extension header
    detection
  6lowpan: add nhc module for GHC routing extension header detection

 include/net/6lowpan.h           | 10 ++++++-
 include/net/ipv6.h              | 15 +++++++++++
 net/6lowpan/6lowpan_i.h         | 28 +++++++++++++++++++
 net/6lowpan/Kconfig             | 47 ++++++++++++++++++++++++++++++--
 net/6lowpan/Makefile            |  9 +++++++
 net/6lowpan/core.c              | 59 +++++++++++++++++++++++++++++++++++++++--
 net/6lowpan/debugfs.c           | 53 ++++++++++++++++++++++++++++++++++++
 net/6lowpan/nhc_ghc_ext_dest.c  | 27 +++++++++++++++++++
 net/6lowpan/nhc_ghc_ext_frag.c  | 28 +++++++++++++++++++
 net/6lowpan/nhc_ghc_ext_hop.c   | 27 +++++++++++++++++++
 net/6lowpan/nhc_ghc_ext_route.c | 27 +++++++++++++++++++
 net/6lowpan/nhc_ghc_icmpv6.c    | 27 +++++++++++++++++++
 net/6lowpan/nhc_ghc_udp.c       | 27 +++++++++++++++++++
 net/bluetooth/6lowpan.c         |  8 +++---
 net/ieee802154/6lowpan/core.c   |  6 ++---
 15 files changed, 384 insertions(+), 14 deletions(-)
 create mode 100644 net/6lowpan/6lowpan_i.h
 create mode 100644 net/6lowpan/debugfs.c
 create mode 100644 net/6lowpan/nhc_ghc_ext_dest.c
 create mode 100644 net/6lowpan/nhc_ghc_ext_frag.c
 create mode 100644 net/6lowpan/nhc_ghc_ext_hop.c
 create mode 100644 net/6lowpan/nhc_ghc_ext_route.c
 create mode 100644 net/6lowpan/nhc_ghc_icmpv6.c
 create mode 100644 net/6lowpan/nhc_ghc_udp.c

-- 
2.6.1

[PATCH bluetooth-next 01/10] 6lowpan: clarify Kconfig entries for upcoming GHC support

[Alexander Aring]

From: Stefan Schmidt <stefan-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>

Acked-by: Jukka Rissanen <jukka.rissanen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Signed-off-by: Stefan Schmidt <stefan-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
Signed-off-by: Alexander Aring <alex.aring-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 net/6lowpan/Kconfig | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index 7fa0f38..6af7a46 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -6,11 +6,12 @@ menuconfig 6LOWPAN
 	  "6LoWPAN" which is supported by IEEE 802.15.4 or Bluetooth stacks.
 
 menuconfig 6LOWPAN_NHC
-	tristate "Next Header Compression Support"
+	tristate "Next Header and Generic Header Compression Support"
 	depends on 6LOWPAN
 	default y
 	---help---
-	  Support for next header compression.
+	  Support for next header and generic header compression defined in
+	  RFC6282 and RFC7400.
 
 if 6LOWPAN_NHC
 
-- 
2.6.1

[PATCH bluetooth-next 01/10] 6lowpan: clarify Kconfig entries for upcoming GHC support

[Alexander Aring]

From: Stefan Schmidt <stefan@osg.samsung.com>

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>
---
 net/6lowpan/Kconfig | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index 7fa0f38..6af7a46 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -6,11 +6,12 @@ menuconfig 6LOWPAN
 	  "6LoWPAN" which is supported by IEEE 802.15.4 or Bluetooth stacks.
 
 menuconfig 6LOWPAN_NHC
-	tristate "Next Header Compression Support"
+	tristate "Next Header and Generic Header Compression Support"
 	depends on 6LOWPAN
 	default y
 	---help---
-	  Support for next header compression.
+	  Support for next header and generic header compression defined in
+	  RFC6282 and RFC7400.
 
 if 6LOWPAN_NHC
 
-- 
2.6.1

[PATCH bluetooth-next 02/10] 6lowpan: add nhc module for GHC hop-by-hopextension header detection

[Alexander Aring]

From: Stefan Schmidt <stefan-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>

Acked-by: Jukka Rissanen <jukka.rissanen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Signed-off-by: Stefan Schmidt <stefan-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
Signed-off-by: Alexander Aring <alex.aring-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 net/6lowpan/Kconfig           |  6 ++++++
 net/6lowpan/Makefile          |  3 +++
 net/6lowpan/nhc_ghc_ext_hop.c | 27 +++++++++++++++++++++++++++
 3 files changed, 36 insertions(+)
 create mode 100644 net/6lowpan/nhc_ghc_ext_hop.c

diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index 6af7a46..1bd49eb 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -59,4 +59,10 @@ config 6LOWPAN_NHC_UDP
 	---help---
 	  6LoWPAN IPv6 UDP Header compression according to RFC6282.
 
+config 6LOWPAN_GHC_EXT_HDR_HOP
+	tristate "GHC Hop-by-Hop Options Header Support"
+	---help---
+	  6LoWPAN IPv6 Hop-by-Hop option generic header compression according
+	  to RFC7400.
+
 endif
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index c6ffc55..ba20e01 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_EXT_HDR_HOP) += nhc_ghc_ext_hop.o
diff --git a/net/6lowpan/nhc_ghc_ext_hop.c b/net/6lowpan/nhc_ghc_ext_hop.c
new file mode 100644
index 0000000..baec86f
--- /dev/null
+++ b/net/6lowpan/nhc_ghc_ext_hop.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_HOP_IDLEN	1
+#define LOWPAN_GHC_EXT_HOP_ID_0		0xb0
+#define LOWPAN_GHC_EXT_HOP_MASK_0	0xfe
+
+static void hop_ghid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_GHC_EXT_HOP_ID_0;
+	nhc->idmask[0] = LOWPAN_GHC_EXT_HOP_MASK_0;
+}
+
+LOWPAN_NHC(ghc_ext_hop, "RFC7400 Hop-by-Hop Extension Header", NEXTHDR_HOP, 0,
+	   hop_ghid_setup, LOWPAN_GHC_EXT_HOP_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(ghc_ext_hop);
+MODULE_DESCRIPTION("6LoWPAN generic header hop-by-hop extension compression");
+MODULE_LICENSE("GPL");
-- 
2.6.1

[PATCH bluetooth-next 02/10] 6lowpan: add nhc module for GHC hop-by-hopextension header detection

[Alexander Aring]

From: Stefan Schmidt <stefan@osg.samsung.com>

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>
---
 net/6lowpan/Kconfig           |  6 ++++++
 net/6lowpan/Makefile          |  3 +++
 net/6lowpan/nhc_ghc_ext_hop.c | 27 +++++++++++++++++++++++++++
 3 files changed, 36 insertions(+)
 create mode 100644 net/6lowpan/nhc_ghc_ext_hop.c

diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index 6af7a46..1bd49eb 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -59,4 +59,10 @@ config 6LOWPAN_NHC_UDP
 	---help---
 	  6LoWPAN IPv6 UDP Header compression according to RFC6282.
 
+config 6LOWPAN_GHC_EXT_HDR_HOP
+	tristate "GHC Hop-by-Hop Options Header Support"
+	---help---
+	  6LoWPAN IPv6 Hop-by-Hop option generic header compression according
+	  to RFC7400.
+
 endif
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index c6ffc55..ba20e01 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_EXT_HDR_HOP) += nhc_ghc_ext_hop.o
diff --git a/net/6lowpan/nhc_ghc_ext_hop.c b/net/6lowpan/nhc_ghc_ext_hop.c
new file mode 100644
index 0000000..baec86f
--- /dev/null
+++ b/net/6lowpan/nhc_ghc_ext_hop.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_HOP_IDLEN	1
+#define LOWPAN_GHC_EXT_HOP_ID_0		0xb0
+#define LOWPAN_GHC_EXT_HOP_MASK_0	0xfe
+
+static void hop_ghid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_GHC_EXT_HOP_ID_0;
+	nhc->idmask[0] = LOWPAN_GHC_EXT_HOP_MASK_0;
+}
+
+LOWPAN_NHC(ghc_ext_hop, "RFC7400 Hop-by-Hop Extension Header", NEXTHDR_HOP, 0,
+	   hop_ghid_setup, LOWPAN_GHC_EXT_HOP_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(ghc_ext_hop);
+MODULE_DESCRIPTION("6LoWPAN generic header hop-by-hop extension compression");
+MODULE_LICENSE("GPL");
-- 
2.6.1

[PATCH bluetooth-next 03/10] 6lowpan: add nhc module for GHC UDP detection

[Alexander Aring]

From: Stefan Schmidt <stefan@osg.samsung.com>

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>
---
 net/6lowpan/Kconfig       |  5 +++++
 net/6lowpan/Makefile      |  1 +
 net/6lowpan/nhc_ghc_udp.c | 27 +++++++++++++++++++++++++++
 3 files changed, 33 insertions(+)
 create mode 100644 net/6lowpan/nhc_ghc_udp.c

diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index 1bd49eb..94d5178 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -65,4 +65,9 @@ config 6LOWPAN_GHC_EXT_HDR_HOP
 	  6LoWPAN IPv6 Hop-by-Hop option generic header compression according
 	  to RFC7400.
 
+config 6LOWPAN_GHC_UDP
+	tristate "GHC UDP Support"
+	---help---
+	  6LoWPAN IPv6 UDP generic header compression according to RFC7400.
+
 endif
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index ba20e01..5e4f2f3 100644
--- a/net/6lowpan/Makefile
+++ b/net/6lowpan/Makefile
@@ -13,3 +13,4 @@ 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
diff --git a/net/6lowpan/nhc_ghc_udp.c b/net/6lowpan/nhc_ghc_udp.c
new file mode 100644
index 0000000..17beefa
--- /dev/null
+++ b/net/6lowpan/nhc_ghc_udp.c
@@ -0,0 +1,27 @@
+/*
+ *	6LoWPAN UDP 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_UDP_IDLEN	1
+#define LOWPAN_GHC_UDP_ID_0	0xd0
+#define LOWPAN_GHC_UDP_MASK_0	0xf8
+
+static void udp_ghid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_GHC_UDP_ID_0;
+	nhc->idmask[0] = LOWPAN_GHC_UDP_MASK_0;
+}
+
+LOWPAN_NHC(ghc_udp, "RFC7400 UDP", NEXTHDR_UDP, 0,
+	   udp_ghid_setup, LOWPAN_GHC_UDP_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(ghc_udp);
+MODULE_DESCRIPTION("6LoWPAN generic header UDP compression");
+MODULE_LICENSE("GPL");
-- 
2.6.1

[PATCH bluetooth-next 04/10] 6lowpan: add nhc module for GHC ICMPv6 detection

[Alexander Aring]

From: Stefan Schmidt <stefan@osg.samsung.com>

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>
---
 net/6lowpan/Kconfig          |  5 +++++
 net/6lowpan/Makefile         |  1 +
 net/6lowpan/nhc_ghc_icmpv6.c | 27 +++++++++++++++++++++++++++
 3 files changed, 33 insertions(+)
 create mode 100644 net/6lowpan/nhc_ghc_icmpv6.c

diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index 94d5178..0a3f5a8 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -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
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index 5e4f2f3..86af3fd 100644
--- a/net/6lowpan/Makefile
+++ b/net/6lowpan/Makefile
@@ -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
diff --git a/net/6lowpan/nhc_ghc_icmpv6.c b/net/6lowpan/nhc_ghc_icmpv6.c
new file mode 100644
index 0000000..32e7c2c
--- /dev/null
+++ b/net/6lowpan/nhc_ghc_icmpv6.c
@@ -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");
-- 
2.6.1

[PATCH bluetooth-next 05/10] 6lowpan: add nhc module for GHC destination extension header detection

[Alexander Aring]

From: Stefan Schmidt <stefan@osg.samsung.com>

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>
---
 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 0a3f5a8..e5184e6 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 86af3fd..fc4bac0 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 0000000..9887b3a
--- /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");
-- 
2.6.1

[PATCH bluetooth-next 06/10] 6lowpan: add nhc module for GHC fragmentation extension header detection

[Alexander Aring]

From: Stefan Schmidt <stefan@osg.samsung.com>

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>
---
 net/6lowpan/Kconfig            |  6 ++++++
 net/6lowpan/Makefile           |  1 +
 net/6lowpan/nhc_ghc_ext_frag.c | 28 ++++++++++++++++++++++++++++
 3 files changed, 35 insertions(+)
 create mode 100644 net/6lowpan/nhc_ghc_ext_frag.c

diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index e5184e6..13abcc5 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -81,4 +81,10 @@ config 6LOWPAN_GHC_EXT_HDR_DEST
 	  6LoWPAN IPv6 destination option generic header compression according
 	  to RFC7400.
 
+config 6LOWPAN_GHC_EXT_HDR_FRAG
+	tristate "GHC Fragmentation Options Header Support"
+	---help---
+	  6LoWPAN IPv6 fragmentation option generic header compression
+	  according to RFC7400.
+
 endif
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index fc4bac0..fb3f48d 100644
--- a/net/6lowpan/Makefile
+++ b/net/6lowpan/Makefile
@@ -16,3 +16,4 @@ 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
+obj-$(CONFIG_6LOWPAN_GHC_EXT_HDR_FRAG) += nhc_ghc_ext_frag.o
diff --git a/net/6lowpan/nhc_ghc_ext_frag.c b/net/6lowpan/nhc_ghc_ext_frag.c
new file mode 100644
index 0000000..1308b79
--- /dev/null
+++ b/net/6lowpan/nhc_ghc_ext_frag.c
@@ -0,0 +1,28 @@
+/*
+ *	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_FRAG_IDLEN	1
+#define LOWPAN_GHC_EXT_FRAG_ID_0	0xb4
+#define LOWPAN_GHC_EXT_FRAG_MASK_0	0xfe
+
+static void frag_ghid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_GHC_EXT_FRAG_ID_0;
+	nhc->idmask[0] = LOWPAN_GHC_EXT_FRAG_MASK_0;
+}
+
+LOWPAN_NHC(ghc_ext_frag, "RFC7400 Fragmentation Extension Header",
+	   NEXTHDR_FRAGMENT, 0, frag_ghid_setup,
+	   LOWPAN_GHC_EXT_FRAG_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(ghc_ext_frag);
+MODULE_DESCRIPTION("6LoWPAN generic header fragmentation extension compression");
+MODULE_LICENSE("GPL");
-- 
2.6.1

[PATCH bluetooth-next 07/10] 6lowpan: add nhc module for GHC routing extension header detection

[Alexander Aring]

From: Stefan Schmidt <stefan-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>

Acked-by: Jukka Rissanen <jukka.rissanen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Signed-off-by: Stefan Schmidt <stefan-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
Signed-off-by: Alexander Aring <alex.aring-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 net/6lowpan/Kconfig             |  6 ++++++
 net/6lowpan/Makefile            |  1 +
 net/6lowpan/nhc_ghc_ext_route.c | 27 +++++++++++++++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 net/6lowpan/nhc_ghc_ext_route.c

diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index 13abcc5..bcb9d8a 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -87,4 +87,10 @@ config 6LOWPAN_GHC_EXT_HDR_FRAG
 	  6LoWPAN IPv6 fragmentation option generic header compression
 	  according to RFC7400.
 
+config 6LOWPAN_GHC_EXT_HDR_ROUTE
+	tristate "GHC Routing Options Header Support"
+	---help---
+	  6LoWPAN IPv6 routing option generic header compression according
+	  to RFC7400.
+
 endif
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index fb3f48d..9e35a5d 100644
--- a/net/6lowpan/Makefile
+++ b/net/6lowpan/Makefile
@@ -17,3 +17,4 @@ obj-$(CONFIG_6LOWPAN_GHC_UDP) += nhc_ghc_udp.o
 obj-$(CONFIG_6LOWPAN_GHC_ICMPV6) += nhc_ghc_icmpv6.o
 obj-$(CONFIG_6LOWPAN_GHC_EXT_HDR_DEST) += nhc_ghc_ext_dest.o
 obj-$(CONFIG_6LOWPAN_GHC_EXT_HDR_FRAG) += nhc_ghc_ext_frag.o
+obj-$(CONFIG_6LOWPAN_GHC_EXT_HDR_ROUTE) += nhc_ghc_ext_route.o
diff --git a/net/6lowpan/nhc_ghc_ext_route.c b/net/6lowpan/nhc_ghc_ext_route.c
new file mode 100644
index 0000000..d7e5bd7
--- /dev/null
+++ b/net/6lowpan/nhc_ghc_ext_route.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_ROUTE_IDLEN	1
+#define LOWPAN_GHC_EXT_ROUTE_ID_0	0xb2
+#define LOWPAN_GHC_EXT_ROUTE_MASK_0	0xfe
+
+static void route_ghid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_GHC_EXT_ROUTE_ID_0;
+	nhc->idmask[0] = LOWPAN_GHC_EXT_ROUTE_MASK_0;
+}
+
+LOWPAN_NHC(ghc_ext_route, "RFC7400 Routing Extension Header", NEXTHDR_ROUTING,
+	   0, route_ghid_setup, LOWPAN_GHC_EXT_ROUTE_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(ghc_ext_route);
+MODULE_DESCRIPTION("6LoWPAN generic header routing extension compression");
+MODULE_LICENSE("GPL");
-- 
2.6.1

[PATCH bluetooth-next 07/10] 6lowpan: add nhc module for GHC routing extension header detection

[Alexander Aring]

From: Stefan Schmidt <stefan@osg.samsung.com>

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>
---
 net/6lowpan/Kconfig             |  6 ++++++
 net/6lowpan/Makefile            |  1 +
 net/6lowpan/nhc_ghc_ext_route.c | 27 +++++++++++++++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 net/6lowpan/nhc_ghc_ext_route.c

diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index 13abcc5..bcb9d8a 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -87,4 +87,10 @@ config 6LOWPAN_GHC_EXT_HDR_FRAG
 	  6LoWPAN IPv6 fragmentation option generic header compression
 	  according to RFC7400.
 
+config 6LOWPAN_GHC_EXT_HDR_ROUTE
+	tristate "GHC Routing Options Header Support"
+	---help---
+	  6LoWPAN IPv6 routing option generic header compression according
+	  to RFC7400.
+
 endif
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index fb3f48d..9e35a5d 100644
--- a/net/6lowpan/Makefile
+++ b/net/6lowpan/Makefile
@@ -17,3 +17,4 @@ obj-$(CONFIG_6LOWPAN_GHC_UDP) += nhc_ghc_udp.o
 obj-$(CONFIG_6LOWPAN_GHC_ICMPV6) += nhc_ghc_icmpv6.o
 obj-$(CONFIG_6LOWPAN_GHC_EXT_HDR_DEST) += nhc_ghc_ext_dest.o
 obj-$(CONFIG_6LOWPAN_GHC_EXT_HDR_FRAG) += nhc_ghc_ext_frag.o
+obj-$(CONFIG_6LOWPAN_GHC_EXT_HDR_ROUTE) += nhc_ghc_ext_route.o
diff --git a/net/6lowpan/nhc_ghc_ext_route.c b/net/6lowpan/nhc_ghc_ext_route.c
new file mode 100644
index 0000000..d7e5bd7
--- /dev/null
+++ b/net/6lowpan/nhc_ghc_ext_route.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_ROUTE_IDLEN	1
+#define LOWPAN_GHC_EXT_ROUTE_ID_0	0xb2
+#define LOWPAN_GHC_EXT_ROUTE_MASK_0	0xfe
+
+static void route_ghid_setup(struct lowpan_nhc *nhc)
+{
+	nhc->id[0] = LOWPAN_GHC_EXT_ROUTE_ID_0;
+	nhc->idmask[0] = LOWPAN_GHC_EXT_ROUTE_MASK_0;
+}
+
+LOWPAN_NHC(ghc_ext_route, "RFC7400 Routing Extension Header", NEXTHDR_ROUTING,
+	   0, route_ghid_setup, LOWPAN_GHC_EXT_ROUTE_IDLEN, NULL, NULL);
+
+module_lowpan_nhc(ghc_ext_route);
+MODULE_DESCRIPTION("6LoWPAN generic header routing extension compression");
+MODULE_LICENSE("GPL");
-- 
2.6.1

[PATCH bluetooth-next 08/10] 6lowpan: add lowpan dev register helpers

[Alexander Aring]

This patch introduces register and unregister functionality for lowpan
interfaces. While register a lowpan interface there are several things
which need to be initialize by the 6lowpan subsystem. Upcoming
functionality need to register/unregister per interface components e.g.
debugfs entry.

Reviewed-by: Stefan Schmidt <stefan-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
Signed-off-by: Alexander Aring <alex.aring-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 include/net/6lowpan.h         |  7 ++++++-
 net/6lowpan/core.c            | 33 +++++++++++++++++++++++++++++++--
 net/bluetooth/6lowpan.c       |  8 +++-----
 net/ieee802154/6lowpan/core.c |  6 ++----
 4 files changed, 42 insertions(+), 12 deletions(-)

diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h
index cf3bc56..730211f 100644
--- a/include/net/6lowpan.h
+++ b/include/net/6lowpan.h
@@ -185,7 +185,12 @@ static inline void lowpan_push_hc_data(u8 **hc_ptr, const void *data,
 	*hc_ptr += len;
 }
 
-void lowpan_netdev_setup(struct net_device *dev, enum lowpan_lltypes lltype);
+int lowpan_register_netdevice(struct net_device *dev,
+			      enum lowpan_lltypes lltype);
+int lowpan_register_netdev(struct net_device *dev,
+			   enum lowpan_lltypes lltype);
+void lowpan_unregister_netdevice(struct net_device *dev);
+void lowpan_unregister_netdev(struct net_device *dev);
 
 /**
  * lowpan_header_decompress - replace 6LoWPAN header with IPv6 header
diff --git a/net/6lowpan/core.c b/net/6lowpan/core.c
index 83b19e0..80fc509 100644
--- a/net/6lowpan/core.c
+++ b/net/6lowpan/core.c
@@ -15,7 +15,8 @@
 
 #include <net/6lowpan.h>
 
-void lowpan_netdev_setup(struct net_device *dev, enum lowpan_lltypes lltype)
+int lowpan_register_netdevice(struct net_device *dev,
+			      enum lowpan_lltypes lltype)
 {
 	dev->addr_len = EUI64_ADDR_LEN;
 	dev->type = ARPHRD_6LOWPAN;
@@ -23,8 +24,36 @@ void lowpan_netdev_setup(struct net_device *dev, enum lowpan_lltypes lltype)
 	dev->priv_flags |= IFF_NO_QUEUE;
 
 	lowpan_priv(dev)->lltype = lltype;
+
+	return register_netdevice(dev);
+}
+EXPORT_SYMBOL(lowpan_register_netdevice);
+
+int lowpan_register_netdev(struct net_device *dev,
+			   enum lowpan_lltypes lltype)
+{
+	int ret;
+
+	rtnl_lock();
+	ret = lowpan_register_netdevice(dev, lltype);
+	rtnl_unlock();
+	return ret;
+}
+EXPORT_SYMBOL(lowpan_register_netdev);
+
+void lowpan_unregister_netdevice(struct net_device *dev)
+{
+	unregister_netdevice(dev);
+}
+EXPORT_SYMBOL(lowpan_unregister_netdevice);
+
+void lowpan_unregister_netdev(struct net_device *dev)
+{
+	rtnl_lock();
+	lowpan_unregister_netdevice(dev);
+	rtnl_unlock();
 }
-EXPORT_SYMBOL(lowpan_netdev_setup);
+EXPORT_SYMBOL(lowpan_unregister_netdev);
 
 static int __init lowpan_module_init(void)
 {
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index 9e9cca3..d040365 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -825,9 +825,7 @@ static int setup_netdev(struct l2cap_chan *chan, struct lowpan_dev **dev)
 	list_add_rcu(&(*dev)->list, &bt_6lowpan_devices);
 	spin_unlock(&devices_lock);
 
-	lowpan_netdev_setup(netdev, LOWPAN_LLTYPE_BTLE);
-
-	err = register_netdev(netdev);
+	err = lowpan_register_netdev(netdev, LOWPAN_LLTYPE_BTLE);
 	if (err < 0) {
 		BT_INFO("register_netdev failed %d", err);
 		spin_lock(&devices_lock);
@@ -890,7 +888,7 @@ static void delete_netdev(struct work_struct *work)
 	struct lowpan_dev *entry = container_of(work, struct lowpan_dev,
 						delete_netdev);
 
-	unregister_netdev(entry->netdev);
+	lowpan_unregister_netdev(entry->netdev);
 
 	/* The entry pointer is deleted by the netdev destructor. */
 }
@@ -1348,7 +1346,7 @@ static void disconnect_devices(void)
 		ifdown(entry->netdev);
 		BT_DBG("Unregistering netdev %s %p",
 		       entry->netdev->name, entry->netdev);
-		unregister_netdev(entry->netdev);
+		lowpan_unregister_netdev(entry->netdev);
 		kfree(entry);
 	}
 }
diff --git a/net/ieee802154/6lowpan/core.c b/net/ieee802154/6lowpan/core.c
index 20c49c7..737c87a 100644
--- a/net/ieee802154/6lowpan/core.c
+++ b/net/ieee802154/6lowpan/core.c
@@ -161,9 +161,7 @@ static int lowpan_newlink(struct net *src_net, struct net_device *ldev,
 				wdev->needed_headroom;
 	ldev->needed_tailroom = wdev->needed_tailroom;
 
-	lowpan_netdev_setup(ldev, LOWPAN_LLTYPE_IEEE802154);
-
-	ret = register_netdevice(ldev);
+	ret = lowpan_register_netdevice(ldev, LOWPAN_LLTYPE_IEEE802154);
 	if (ret < 0) {
 		dev_put(wdev);
 		return ret;
@@ -180,7 +178,7 @@ static void lowpan_dellink(struct net_device *ldev, struct list_head *head)
 	ASSERT_RTNL();
 
 	wdev->ieee802154_ptr->lowpan_dev = NULL;
-	unregister_netdevice(ldev);
+	lowpan_unregister_netdevice(ldev);
 	dev_put(wdev);
 }
 
-- 
2.6.1

[PATCH bluetooth-next 08/10] 6lowpan: add lowpan dev register helpers

[Alexander Aring]

This patch introduces register and unregister functionality for lowpan
interfaces. While register a lowpan interface there are several things
which need to be initialize by the 6lowpan subsystem. Upcoming
functionality need to register/unregister per interface components e.g.
debugfs entry.

Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
---
 include/net/6lowpan.h         |  7 ++++++-
 net/6lowpan/core.c            | 33 +++++++++++++++++++++++++++++++--
 net/bluetooth/6lowpan.c       |  8 +++-----
 net/ieee802154/6lowpan/core.c |  6 ++----
 4 files changed, 42 insertions(+), 12 deletions(-)

diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h
index cf3bc56..730211f 100644
--- a/include/net/6lowpan.h
+++ b/include/net/6lowpan.h
@@ -185,7 +185,12 @@ static inline void lowpan_push_hc_data(u8 **hc_ptr, const void *data,
 	*hc_ptr += len;
 }
 
-void lowpan_netdev_setup(struct net_device *dev, enum lowpan_lltypes lltype);
+int lowpan_register_netdevice(struct net_device *dev,
+			      enum lowpan_lltypes lltype);
+int lowpan_register_netdev(struct net_device *dev,
+			   enum lowpan_lltypes lltype);
+void lowpan_unregister_netdevice(struct net_device *dev);
+void lowpan_unregister_netdev(struct net_device *dev);
 
 /**
  * lowpan_header_decompress - replace 6LoWPAN header with IPv6 header
diff --git a/net/6lowpan/core.c b/net/6lowpan/core.c
index 83b19e0..80fc509 100644
--- a/net/6lowpan/core.c
+++ b/net/6lowpan/core.c
@@ -15,7 +15,8 @@
 
 #include <net/6lowpan.h>
 
-void lowpan_netdev_setup(struct net_device *dev, enum lowpan_lltypes lltype)
+int lowpan_register_netdevice(struct net_device *dev,
+			      enum lowpan_lltypes lltype)
 {
 	dev->addr_len = EUI64_ADDR_LEN;
 	dev->type = ARPHRD_6LOWPAN;
@@ -23,8 +24,36 @@ void lowpan_netdev_setup(struct net_device *dev, enum lowpan_lltypes lltype)
 	dev->priv_flags |= IFF_NO_QUEUE;
 
 	lowpan_priv(dev)->lltype = lltype;
+
+	return register_netdevice(dev);
+}
+EXPORT_SYMBOL(lowpan_register_netdevice);
+
+int lowpan_register_netdev(struct net_device *dev,
+			   enum lowpan_lltypes lltype)
+{
+	int ret;
+
+	rtnl_lock();
+	ret = lowpan_register_netdevice(dev, lltype);
+	rtnl_unlock();
+	return ret;
+}
+EXPORT_SYMBOL(lowpan_register_netdev);
+
+void lowpan_unregister_netdevice(struct net_device *dev)
+{
+	unregister_netdevice(dev);
+}
+EXPORT_SYMBOL(lowpan_unregister_netdevice);
+
+void lowpan_unregister_netdev(struct net_device *dev)
+{
+	rtnl_lock();
+	lowpan_unregister_netdevice(dev);
+	rtnl_unlock();
 }
-EXPORT_SYMBOL(lowpan_netdev_setup);
+EXPORT_SYMBOL(lowpan_unregister_netdev);
 
 static int __init lowpan_module_init(void)
 {
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index 9e9cca3..d040365 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -825,9 +825,7 @@ static int setup_netdev(struct l2cap_chan *chan, struct lowpan_dev **dev)
 	list_add_rcu(&(*dev)->list, &bt_6lowpan_devices);
 	spin_unlock(&devices_lock);
 
-	lowpan_netdev_setup(netdev, LOWPAN_LLTYPE_BTLE);
-
-	err = register_netdev(netdev);
+	err = lowpan_register_netdev(netdev, LOWPAN_LLTYPE_BTLE);
 	if (err < 0) {
 		BT_INFO("register_netdev failed %d", err);
 		spin_lock(&devices_lock);
@@ -890,7 +888,7 @@ static void delete_netdev(struct work_struct *work)
 	struct lowpan_dev *entry = container_of(work, struct lowpan_dev,
 						delete_netdev);
 
-	unregister_netdev(entry->netdev);
+	lowpan_unregister_netdev(entry->netdev);
 
 	/* The entry pointer is deleted by the netdev destructor. */
 }
@@ -1348,7 +1346,7 @@ static void disconnect_devices(void)
 		ifdown(entry->netdev);
 		BT_DBG("Unregistering netdev %s %p",
 		       entry->netdev->name, entry->netdev);
-		unregister_netdev(entry->netdev);
+		lowpan_unregister_netdev(entry->netdev);
 		kfree(entry);
 	}
 }
diff --git a/net/ieee802154/6lowpan/core.c b/net/ieee802154/6lowpan/core.c
index 20c49c7..737c87a 100644
--- a/net/ieee802154/6lowpan/core.c
+++ b/net/ieee802154/6lowpan/core.c
@@ -161,9 +161,7 @@ static int lowpan_newlink(struct net *src_net, struct net_device *ldev,
 				wdev->needed_headroom;
 	ldev->needed_tailroom = wdev->needed_tailroom;
 
-	lowpan_netdev_setup(ldev, LOWPAN_LLTYPE_IEEE802154);
-
-	ret = register_netdevice(ldev);
+	ret = lowpan_register_netdevice(ldev, LOWPAN_LLTYPE_IEEE802154);
 	if (ret < 0) {
 		dev_put(wdev);
 		return ret;
@@ -180,7 +178,7 @@ static void lowpan_dellink(struct net_device *ldev, struct list_head *head)
 	ASSERT_RTNL();
 
 	wdev->ieee802154_ptr->lowpan_dev = NULL;
-	unregister_netdevice(ldev);
+	lowpan_unregister_netdevice(ldev);
 	dev_put(wdev);
 }
 
-- 
2.6.1

[PATCH bluetooth-next 09/10] 6lowpan: add debugfs support

[Alexander Aring]

This patch will introduce a 6lowpan entry into the debugfs if enabled.
Inside this 6lowpan directory we create a subdirectories of all 6lowpan
interfaces to offer a per interface debugfs support.

Reviewed-by: Stefan Schmidt <stefan-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
Signed-off-by: Alexander Aring <alex.aring-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 include/net/6lowpan.h   |  3 +++
 net/6lowpan/6lowpan_i.h | 28 ++++++++++++++++++++++++++
 net/6lowpan/Kconfig     |  8 ++++++++
 net/6lowpan/Makefile    |  1 +
 net/6lowpan/core.c      | 28 +++++++++++++++++++++++++-
 net/6lowpan/debugfs.c   | 53 +++++++++++++++++++++++++++++++++++++++++++++++++
 6 files changed, 120 insertions(+), 1 deletion(-)
 create mode 100644 net/6lowpan/6lowpan_i.h
 create mode 100644 net/6lowpan/debugfs.c

diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h
index 730211f..2f6a3f2 100644
--- a/include/net/6lowpan.h
+++ b/include/net/6lowpan.h
@@ -53,6 +53,8 @@
 #ifndef __6LOWPAN_H__
 #define __6LOWPAN_H__
 
+#include <linux/debugfs.h>
+
 #include <net/ipv6.h>
 #include <net/net_namespace.h>
 
@@ -98,6 +100,7 @@ enum lowpan_lltypes {
 
 struct lowpan_priv {
 	enum lowpan_lltypes lltype;
+	struct dentry *iface_debugfs;
 
 	/* must be last */
 	u8 priv[0] __aligned(sizeof(void *));
diff --git a/net/6lowpan/6lowpan_i.h b/net/6lowpan/6lowpan_i.h
new file mode 100644
index 0000000..d16bb4b
--- /dev/null
+++ b/net/6lowpan/6lowpan_i.h
@@ -0,0 +1,28 @@
+#ifndef __6LOWPAN_I_H
+#define __6LOWPAN_I_H
+
+#include <linux/netdevice.h>
+
+#ifdef CONFIG_6LOWPAN_DEBUGFS
+int lowpan_dev_debugfs_init(struct net_device *dev);
+void lowpan_dev_debugfs_exit(struct net_device *dev);
+
+int __init lowpan_debugfs_init(void);
+void lowpan_debugfs_exit(void);
+#else
+static inline int lowpan_dev_debugfs_init(struct net_device *dev)
+{
+	return 0;
+}
+
+static inline void lowpan_dev_debugfs_exit(struct net_device *dev) { }
+
+static inline int __init lowpan_debugfs_init(void)
+{
+	return 0;
+}
+
+static inline void lowpan_debugfs_exit(void) { }
+#endif /* CONFIG_6LOWPAN_DEBUGFS */
+
+#endif /* __6LOWPAN_I_H */
diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index bcb9d8a..9c05151 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -5,6 +5,14 @@ menuconfig 6LOWPAN
 	  This enables IPv6 over Low power Wireless Personal Area Network -
 	  "6LoWPAN" which is supported by IEEE 802.15.4 or Bluetooth stacks.
 
+config 6LOWPAN_DEBUGFS
+	bool "6LoWPAN debugfs support"
+	depends on 6LOWPAN
+	depends on DEBUG_FS
+	---help---
+	  This enables 6LoWPAN debugfs support. For example to manipulate
+	  IPHC context information at runtime.
+
 menuconfig 6LOWPAN_NHC
 	tristate "Next Header and Generic Header Compression Support"
 	depends on 6LOWPAN
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index 9e35a5d..e44f3bf 100644
--- a/net/6lowpan/Makefile
+++ b/net/6lowpan/Makefile
@@ -1,6 +1,7 @@
 obj-$(CONFIG_6LOWPAN) += 6lowpan.o
 
 6lowpan-y := core.o iphc.o nhc.o
+6lowpan-$(CONFIG_6LOWPAN_DEBUGFS) += debugfs.o
 
 #rfc6282 nhcs
 obj-$(CONFIG_6LOWPAN_NHC_DEST) += nhc_dest.o
diff --git a/net/6lowpan/core.c b/net/6lowpan/core.c
index 80fc509..c7f06f5 100644
--- a/net/6lowpan/core.c
+++ b/net/6lowpan/core.c
@@ -15,9 +15,13 @@
 
 #include <net/6lowpan.h>
 
+#include "6lowpan_i.h"
+
 int lowpan_register_netdevice(struct net_device *dev,
 			      enum lowpan_lltypes lltype)
 {
+	int ret;
+
 	dev->addr_len = EUI64_ADDR_LEN;
 	dev->type = ARPHRD_6LOWPAN;
 	dev->mtu = IPV6_MIN_MTU;
@@ -25,7 +29,15 @@ int lowpan_register_netdevice(struct net_device *dev,
 
 	lowpan_priv(dev)->lltype = lltype;
 
-	return register_netdevice(dev);
+	ret = lowpan_dev_debugfs_init(dev);
+	if (ret < 0)
+		return ret;
+
+	ret = register_netdevice(dev);
+	if (ret < 0)
+		lowpan_dev_debugfs_exit(dev);
+
+	return ret;
 }
 EXPORT_SYMBOL(lowpan_register_netdevice);
 
@@ -44,6 +56,7 @@ EXPORT_SYMBOL(lowpan_register_netdev);
 void lowpan_unregister_netdevice(struct net_device *dev)
 {
 	unregister_netdevice(dev);
+	lowpan_dev_debugfs_exit(dev);
 }
 EXPORT_SYMBOL(lowpan_unregister_netdevice);
 
@@ -57,6 +70,12 @@ EXPORT_SYMBOL(lowpan_unregister_netdev);
 
 static int __init lowpan_module_init(void)
 {
+	int ret;
+
+	ret = lowpan_debugfs_init();
+	if (ret < 0)
+		return ret;
+
 	request_module_nowait("ipv6");
 
 	request_module_nowait("nhc_dest");
@@ -69,6 +88,13 @@ static int __init lowpan_module_init(void)
 
 	return 0;
 }
+
+static void __exit lowpan_module_exit(void)
+{
+	lowpan_debugfs_exit();
+}
+
 module_init(lowpan_module_init);
+module_exit(lowpan_module_exit);
 
 MODULE_LICENSE("GPL");
diff --git a/net/6lowpan/debugfs.c b/net/6lowpan/debugfs.c
new file mode 100644
index 0000000..88eef84
--- /dev/null
+++ b/net/6lowpan/debugfs.c
@@ -0,0 +1,53 @@
+/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * Authors:
+ * (C) 2015 Pengutronix, Alexander Aring <aar-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
+ * Copyright (c)  2015 Nordic Semiconductor. All Rights Reserved.
+ */
+
+#include <net/6lowpan.h>
+
+#include "6lowpan_i.h"
+
+static struct dentry *lowpan_debugfs;
+
+int lowpan_dev_debugfs_init(struct net_device *dev)
+{
+	struct lowpan_priv *lpriv = lowpan_priv(dev);
+
+	/* creating the root */
+	lpriv->iface_debugfs = debugfs_create_dir(dev->name, lowpan_debugfs);
+	if (!lpriv->iface_debugfs)
+		goto fail;
+
+	return 0;
+
+fail:
+	return -EINVAL;
+}
+
+void lowpan_dev_debugfs_exit(struct net_device *dev)
+{
+	debugfs_remove_recursive(lowpan_priv(dev)->iface_debugfs);
+}
+
+int __init lowpan_debugfs_init(void)
+{
+	lowpan_debugfs = debugfs_create_dir("6lowpan", NULL);
+	if (!lowpan_debugfs)
+		return -EINVAL;
+
+	return 0;
+}
+
+void lowpan_debugfs_exit(void)
+{
+	debugfs_remove_recursive(lowpan_debugfs);
+}
-- 
2.6.1

[PATCH bluetooth-next 09/10] 6lowpan: add debugfs support

[Alexander Aring]

This patch will introduce a 6lowpan entry into the debugfs if enabled.
Inside this 6lowpan directory we create a subdirectories of all 6lowpan
interfaces to offer a per interface debugfs support.

Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
---
 include/net/6lowpan.h   |  3 +++
 net/6lowpan/6lowpan_i.h | 28 ++++++++++++++++++++++++++
 net/6lowpan/Kconfig     |  8 ++++++++
 net/6lowpan/Makefile    |  1 +
 net/6lowpan/core.c      | 28 +++++++++++++++++++++++++-
 net/6lowpan/debugfs.c   | 53 +++++++++++++++++++++++++++++++++++++++++++++++++
 6 files changed, 120 insertions(+), 1 deletion(-)
 create mode 100644 net/6lowpan/6lowpan_i.h
 create mode 100644 net/6lowpan/debugfs.c

diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h
index 730211f..2f6a3f2 100644
--- a/include/net/6lowpan.h
+++ b/include/net/6lowpan.h
@@ -53,6 +53,8 @@
 #ifndef __6LOWPAN_H__
 #define __6LOWPAN_H__
 
+#include <linux/debugfs.h>
+
 #include <net/ipv6.h>
 #include <net/net_namespace.h>
 
@@ -98,6 +100,7 @@ enum lowpan_lltypes {
 
 struct lowpan_priv {
 	enum lowpan_lltypes lltype;
+	struct dentry *iface_debugfs;
 
 	/* must be last */
 	u8 priv[0] __aligned(sizeof(void *));
diff --git a/net/6lowpan/6lowpan_i.h b/net/6lowpan/6lowpan_i.h
new file mode 100644
index 0000000..d16bb4b
--- /dev/null
+++ b/net/6lowpan/6lowpan_i.h
@@ -0,0 +1,28 @@
+#ifndef __6LOWPAN_I_H
+#define __6LOWPAN_I_H
+
+#include <linux/netdevice.h>
+
+#ifdef CONFIG_6LOWPAN_DEBUGFS
+int lowpan_dev_debugfs_init(struct net_device *dev);
+void lowpan_dev_debugfs_exit(struct net_device *dev);
+
+int __init lowpan_debugfs_init(void);
+void lowpan_debugfs_exit(void);
+#else
+static inline int lowpan_dev_debugfs_init(struct net_device *dev)
+{
+	return 0;
+}
+
+static inline void lowpan_dev_debugfs_exit(struct net_device *dev) { }
+
+static inline int __init lowpan_debugfs_init(void)
+{
+	return 0;
+}
+
+static inline void lowpan_debugfs_exit(void) { }
+#endif /* CONFIG_6LOWPAN_DEBUGFS */
+
+#endif /* __6LOWPAN_I_H */
diff --git a/net/6lowpan/Kconfig b/net/6lowpan/Kconfig
index bcb9d8a..9c05151 100644
--- a/net/6lowpan/Kconfig
+++ b/net/6lowpan/Kconfig
@@ -5,6 +5,14 @@ menuconfig 6LOWPAN
 	  This enables IPv6 over Low power Wireless Personal Area Network -
 	  "6LoWPAN" which is supported by IEEE 802.15.4 or Bluetooth stacks.
 
+config 6LOWPAN_DEBUGFS
+	bool "6LoWPAN debugfs support"
+	depends on 6LOWPAN
+	depends on DEBUG_FS
+	---help---
+	  This enables 6LoWPAN debugfs support. For example to manipulate
+	  IPHC context information at runtime.
+
 menuconfig 6LOWPAN_NHC
 	tristate "Next Header and Generic Header Compression Support"
 	depends on 6LOWPAN
diff --git a/net/6lowpan/Makefile b/net/6lowpan/Makefile
index 9e35a5d..e44f3bf 100644
--- a/net/6lowpan/Makefile
+++ b/net/6lowpan/Makefile
@@ -1,6 +1,7 @@
 obj-$(CONFIG_6LOWPAN) += 6lowpan.o
 
 6lowpan-y := core.o iphc.o nhc.o
+6lowpan-$(CONFIG_6LOWPAN_DEBUGFS) += debugfs.o
 
 #rfc6282 nhcs
 obj-$(CONFIG_6LOWPAN_NHC_DEST) += nhc_dest.o
diff --git a/net/6lowpan/core.c b/net/6lowpan/core.c
index 80fc509..c7f06f5 100644
--- a/net/6lowpan/core.c
+++ b/net/6lowpan/core.c
@@ -15,9 +15,13 @@
 
 #include <net/6lowpan.h>
 
+#include "6lowpan_i.h"
+
 int lowpan_register_netdevice(struct net_device *dev,
 			      enum lowpan_lltypes lltype)
 {
+	int ret;
+
 	dev->addr_len = EUI64_ADDR_LEN;
 	dev->type = ARPHRD_6LOWPAN;
 	dev->mtu = IPV6_MIN_MTU;
@@ -25,7 +29,15 @@ int lowpan_register_netdevice(struct net_device *dev,
 
 	lowpan_priv(dev)->lltype = lltype;
 
-	return register_netdevice(dev);
+	ret = lowpan_dev_debugfs_init(dev);
+	if (ret < 0)
+		return ret;
+
+	ret = register_netdevice(dev);
+	if (ret < 0)
+		lowpan_dev_debugfs_exit(dev);
+
+	return ret;
 }
 EXPORT_SYMBOL(lowpan_register_netdevice);
 
@@ -44,6 +56,7 @@ EXPORT_SYMBOL(lowpan_register_netdev);
 void lowpan_unregister_netdevice(struct net_device *dev)
 {
 	unregister_netdevice(dev);
+	lowpan_dev_debugfs_exit(dev);
 }
 EXPORT_SYMBOL(lowpan_unregister_netdevice);
 
@@ -57,6 +70,12 @@ EXPORT_SYMBOL(lowpan_unregister_netdev);
 
 static int __init lowpan_module_init(void)
 {
+	int ret;
+
+	ret = lowpan_debugfs_init();
+	if (ret < 0)
+		return ret;
+
 	request_module_nowait("ipv6");
 
 	request_module_nowait("nhc_dest");
@@ -69,6 +88,13 @@ static int __init lowpan_module_init(void)
 
 	return 0;
 }
+
+static void __exit lowpan_module_exit(void)
+{
+	lowpan_debugfs_exit();
+}
+
 module_init(lowpan_module_init);
+module_exit(lowpan_module_exit);
 
 MODULE_LICENSE("GPL");
diff --git a/net/6lowpan/debugfs.c b/net/6lowpan/debugfs.c
new file mode 100644
index 0000000..88eef84
--- /dev/null
+++ b/net/6lowpan/debugfs.c
@@ -0,0 +1,53 @@
+/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * Authors:
+ * (C) 2015 Pengutronix, Alexander Aring <aar@pengutronix.de>
+ * Copyright (c)  2015 Nordic Semiconductor. All Rights Reserved.
+ */
+
+#include <net/6lowpan.h>
+
+#include "6lowpan_i.h"
+
+static struct dentry *lowpan_debugfs;
+
+int lowpan_dev_debugfs_init(struct net_device *dev)
+{
+	struct lowpan_priv *lpriv = lowpan_priv(dev);
+
+	/* creating the root */
+	lpriv->iface_debugfs = debugfs_create_dir(dev->name, lowpan_debugfs);
+	if (!lpriv->iface_debugfs)
+		goto fail;
+
+	return 0;
+
+fail:
+	return -EINVAL;
+}
+
+void lowpan_dev_debugfs_exit(struct net_device *dev)
+{
+	debugfs_remove_recursive(lowpan_priv(dev)->iface_debugfs);
+}
+
+int __init lowpan_debugfs_init(void)
+{
+	lowpan_debugfs = debugfs_create_dir("6lowpan", NULL);
+	if (!lowpan_debugfs)
+		return -EINVAL;
+
+	return 0;
+}
+
+void lowpan_debugfs_exit(void)
+{
+	debugfs_remove_recursive(lowpan_debugfs);
+}
-- 
2.6.1

[PATCH bluetooth-next 10/10] ipv6: add ipv6_addr_prefix_copy

[Alexander Aring]

This patch adds a static inline function ipv6_addr_prefix_copy which
copies a ipv6 address prefix(argument pfx) into the ipv6 address prefix.
The prefix len is given by plen as bits. This function mainly based on
ipv6_addr_prefix which copies one address prefix from address into a new
ipv6 address destination and zero all other address bits.

The difference is that ipv6_addr_prefix_copy don't get a prefix from an
ipv6 address, it sets a prefix to an ipv6 address with keeping other
address bits. The use case is for context based address compression
inside 6LoWPAN IPHC header which keeping ipv6 prefixes inside a context
table to lookup address-bits without sending them.

Cc: David S. Miller <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Acked-by: Łukasz Duda <lukasz.duda@nordicsemi.no>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
---
 include/net/ipv6.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 9a5c9f0..6570f37 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -401,6 +401,21 @@ static inline void ipv6_addr_prefix(struct in6_addr *pfx,
 		pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
 }
 
+static inline void ipv6_addr_prefix_copy(struct in6_addr *addr,
+					 const struct in6_addr *pfx,
+					 int plen)
+{
+	/* caller must guarantee 0 <= plen <= 128 */
+	int o = plen >> 3,
+	    b = plen & 0x7;
+
+	memcpy(addr->s6_addr, pfx, o);
+	if (b != 0) {
+		addr->s6_addr[o] &= ~(0xff00 >> b);
+		addr->s6_addr[o] |= (pfx->s6_addr[o] & (0xff00 >> b));
+	}
+}
+
 static inline void __ipv6_addr_set_half(__be32 *addr,
 					__be32 wh, __be32 wl)
 {
-- 
2.6.1

Re: [PATCH bluetooth-next 10/10] ipv6: add ipv6_addr_prefix_copy

[Marcel Holtmann]

Hi Dave,

> This patch adds a static inline function ipv6_addr_prefix_copy which
> copies a ipv6 address prefix(argument pfx) into the ipv6 address prefix.
> The prefix len is given by plen as bits. This function mainly based on
> ipv6_addr_prefix which copies one address prefix from address into a new
> ipv6 address destination and zero all other address bits.
> 
> The difference is that ipv6_addr_prefix_copy don't get a prefix from an
> ipv6 address, it sets a prefix to an ipv6 address with keeping other
> address bits. The use case is for context based address compression
> inside 6LoWPAN IPHC header which keeping ipv6 prefixes inside a context
> table to lookup address-bits without sending them.
> 
> Cc: David S. Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
> Cc: Alexey Kuznetsov <kuznet-v/Mj1YrvjDBInbfyfbPRSQ@public.gmane.org>
> Cc: James Morris <jmorris-gx6/JNMH7DfYtjvyW6yDsg@public.gmane.org>
> Cc: Hideaki YOSHIFUJI <yoshfuji-VfPWfsRibaP+Ru+s062T9g@public.gmane.org>
> Cc: Patrick McHardy <kaber-dcUjhNyLwpNeoWH0uzbU5w@public.gmane.org>
> Acked-by: Łukasz Duda <lukasz.duda-hR+23Fw+YnFSHonuZl5R5Q@public.gmane.org>
> Acked-by: Hannes Frederic Sowa <hannes-tFNcAqjVMyqKXQKiL6tip0B+6BGkLq7r@public.gmane.org>
> Acked-by: YOSHIFUJI Hideaki <yoshfuji-VfPWfsRibaP+Ru+s062T9g@public.gmane.org>
> Reviewed-by: Stefan Schmidt <stefan-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
> Signed-off-by: Alexander Aring <alex.aring-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
> include/net/ipv6.h | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
> 
> diff --git a/include/net/ipv6.h b/include/net/ipv6.h
> index 9a5c9f0..6570f37 100644
> --- a/include/net/ipv6.h
> +++ b/include/net/ipv6.h
> @@ -401,6 +401,21 @@ static inline void ipv6_addr_prefix(struct in6_addr *pfx,
> 		pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
> }
> 
> +static inline void ipv6_addr_prefix_copy(struct in6_addr *addr,
> +					 const struct in6_addr *pfx,
> +					 int plen)
> +{
> +	/* caller must guarantee 0 <= plen <= 128 */
> +	int o = plen >> 3,
> +	    b = plen & 0x7;
> +
> +	memcpy(addr->s6_addr, pfx, o);
> +	if (b != 0) {
> +		addr->s6_addr[o] &= ~(0xff00 >> b);
> +		addr->s6_addr[o] |= (pfx->s6_addr[o] & (0xff00 >> b));
> +	}
> +}
> +
> static inline void __ipv6_addr_set_half(__be32 *addr,
> 					__be32 wh, __be32 wl)
> {

if there are no objections, I would like to take this change through the bluetooth-next tree.

Regards

Marcel

Re: [PATCH bluetooth-next 10/10] ipv6: add ipv6_addr_prefix_copy

[Marcel Holtmann]

Hi Dave,

> This patch adds a static inline function ipv6_addr_prefix_copy which
> copies a ipv6 address prefix(argument pfx) into the ipv6 address prefix.
> The prefix len is given by plen as bits. This function mainly based on
> ipv6_addr_prefix which copies one address prefix from address into a new
> ipv6 address destination and zero all other address bits.
> 
> The difference is that ipv6_addr_prefix_copy don't get a prefix from an
> ipv6 address, it sets a prefix to an ipv6 address with keeping other
> address bits. The use case is for context based address compression
> inside 6LoWPAN IPHC header which keeping ipv6 prefixes inside a context
> table to lookup address-bits without sending them.
> 
> Cc: David S. Miller <davem@davemloft.net>
> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
> Cc: James Morris <jmorris@namei.org>
> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
> Cc: Patrick McHardy <kaber@trash.net>
> Acked-by: Łukasz Duda <lukasz.duda@nordicsemi.no>
> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
> Signed-off-by: Alexander Aring <alex.aring@gmail.com>
> ---
> include/net/ipv6.h | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
> 
> diff --git a/include/net/ipv6.h b/include/net/ipv6.h
> index 9a5c9f0..6570f37 100644
> --- a/include/net/ipv6.h
> +++ b/include/net/ipv6.h
> @@ -401,6 +401,21 @@ static inline void ipv6_addr_prefix(struct in6_addr *pfx,
> 		pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b);
> }
> 
> +static inline void ipv6_addr_prefix_copy(struct in6_addr *addr,
> +					 const struct in6_addr *pfx,
> +					 int plen)
> +{
> +	/* caller must guarantee 0 <= plen <= 128 */
> +	int o = plen >> 3,
> +	    b = plen & 0x7;
> +
> +	memcpy(addr->s6_addr, pfx, o);
> +	if (b != 0) {
> +		addr->s6_addr[o] &= ~(0xff00 >> b);
> +		addr->s6_addr[o] |= (pfx->s6_addr[o] & (0xff00 >> b));
> +	}
> +}
> +
> static inline void __ipv6_addr_set_half(__be32 *addr,
> 					__be32 wh, __be32 wl)
> {

if there are no objections, I would like to take this change through the bluetooth-next tree.

Regards

Marcel

Re: [PATCH bluetooth-next 10/10] ipv6: add ipv6_addr_prefix_copy

[David Miller]

From: Marcel Holtmann <marcel-kz+m5ild9QBg9hUCZPvPmw@public.gmane.org>
Date: Wed, 9 Dec 2015 14:28:38 -1000

> if there are no objections, I would like to take this change through the bluetooth-next tree.

No problem:

Acked-by: David S. Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>

Re: [PATCH bluetooth-next 10/10] ipv6: add ipv6_addr_prefix_copy

[David Miller]

From: Marcel Holtmann <marcel@holtmann.org>
Date: Wed, 9 Dec 2015 14:28:38 -1000

> if there are no objections, I would like to take this change through the bluetooth-next tree.

No problem:

Acked-by: David S. Miller <davem@davemloft.net>