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
From: Marcel Holtmann <[email protected]>
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 <[email protected]>
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 <[email protected]>
> Cc: Alexey Kuznetsov <[email protected]>
> Cc: James Morris <[email protected]>
> Cc: Hideaki YOSHIFUJI <[email protected]>
> Cc: Patrick McHardy <[email protected]>
> Acked-by: Łukasz Duda <[email protected]>
> Acked-by: Hannes Frederic Sowa <[email protected]>
> Acked-by: YOSHIFUJI Hideaki <[email protected]>
> Reviewed-by: Stefan Schmidt <[email protected]>
> Signed-off-by: Alexander Aring <[email protected]>
> ---
> 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
From: Stefan Schmidt <[email protected]>
Acked-by: Jukka Rissanen <[email protected]>
Signed-off-by: Stefan Schmidt <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
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
From: Stefan Schmidt <[email protected]>
Acked-by: Jukka Rissanen <[email protected]>
Signed-off-by: Stefan Schmidt <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
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
From: Stefan Schmidt <[email protected]>
Acked-by: Jukka Rissanen <[email protected]>
Signed-off-by: Stefan Schmidt <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
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
From: Stefan Schmidt <[email protected]>
Acked-by: Jukka Rissanen <[email protected]>
Signed-off-by: Stefan Schmidt <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
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
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 <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
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 <[email protected]>
+ * 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
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 <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
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
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 <[email protected]>
Cc: Alexey Kuznetsov <[email protected]>
Cc: James Morris <[email protected]>
Cc: Hideaki YOSHIFUJI <[email protected]>
Cc: Patrick McHardy <[email protected]>
Acked-by: Łukasz Duda <[email protected]>
Acked-by: Hannes Frederic Sowa <[email protected]>
Acked-by: YOSHIFUJI Hideaki <[email protected]>
Reviewed-by: Stefan Schmidt <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
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
From: Stefan Schmidt <[email protected]>
Acked-by: Jukka Rissanen <[email protected]>
Signed-off-by: Stefan Schmidt <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
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
From: Stefan Schmidt <[email protected]>
Acked-by: Jukka Rissanen <[email protected]>
Signed-off-by: Stefan Schmidt <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
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
From: Stefan Schmidt <[email protected]>
Acked-by: Jukka Rissanen <[email protected]>
Signed-off-by: Stefan Schmidt <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
---
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
Hi,
sorry for the noise, I got a at PATCH 02/10:
"4.7.0 Temporary System Problem. Try again later ...."
from git send-email. I will look into this issue right now by doing some
private testing and if it seems to run fine I will try again.
- Alex