Clicker2-STM32 + net/: Add configurations to support the endpoint and hub roles in a star topology. Fix various things that broke when IPv6 forwarding was enabled.

configs/clicker2-stm32/README.txt

@@ -380,7 +380,10 @@ Configurations
 
     NOTES:
 
-    1. This configuration differs from the mrf24j40-mac configuration in
+    1. You must must have two clicker2-stm32 boards each with an MRF24J40
+       click board in order to run these tests.
+
+    2. This configuration differs from the mrf24j40-mac configuration in
        that this configuration, like the usbnsh configuration, uses a USB
        serial device for console I/O.  Such a configuration is useful on the
        Clicker2 STM32 which has no builtin RS-232 drivers and eliminates the
@@ -390,14 +393,14 @@ Configurations
        differences between the usbnsh or mrf24j40-mac configurations and this
        configuration are listed in these NOTES.
 
-    2. On most serial terminal programs that I have used, the USB
+    3. On most serial terminal programs that I have used, the USB
        connection will be lost when the target board is reset.  When that
        happens, you may have to reset your serial terminal program to adapt
        to the new USB connection.  Using TeraTerm, I actually have to exit
        the serial program and restart it in order to detect and select the
        re-established USB serial connection.
 
-    3. This configuration does NOT have USART3 output enabled.  This
+    4. This configuration does NOT have USART3 output enabled.  This
        configuration supports logging of debug output to a circular
        buffer in RAM.  This feature is discussed fully in this Wiki page:
        http://nuttx.org/doku.php?id=wiki:howtos:syslog . Relevant
@@ -426,17 +429,17 @@ Configurations
        the system has crashed because (a) it will be unresponsive and (b)
        the LD2 will be blinking at about 2Hz.
 
-    4. IPv6 networking is enabled with TCP/IP, UDP, 6LoWPAN, and NSH
+    5. IPv6 networking is enabled with TCP/IP, UDP, 6LoWPAN, and NSH
        Telnet support.
 
-    5. Configuration instructions:  Basic PAN configuration is the same as
+    6. Configuration instructions:  Basic PAN configuration is the same as
        for the ieee802154-mac configuration with the exception that after
        the PAN has been configured with the i8sak utility, you must
        explicity bring the network up on each node:
 
          nsh> ifup wpan0
 
-    6. examples/udp is enabled.  This will allow two MRF24J40 nodes to
+    7. examples/udp is enabled.  This will allow two MRF24J40 nodes to
        exchange UDP packets.  Basic instructions:
 
        On the server node:
@@ -464,9 +467,11 @@ Configurations
          E: nsh> ifup wpan0
          C: nsh> udpserver &
          E: nsh> udpclient <server-ip> &
-         E: nsh> dmesg
 
-    6. examples/nettest is enabled.  This will allow two MRF24J40 nodes to
+       The nsh> dmesg command can be use at any time on any node to see
+       any debug output that you have selected.
+
+    8. examples/nettest is enabled.  This will allow two MRF24J40 nodes to
        exchange TCP packets.  Basic instructions:
 
        On the server node:
@@ -494,9 +499,11 @@ Configurations
          E: nsh> ifup wpan0
          C: nsh> tcpserver &
          E: nsh> tcpclient <server-ip> &
-         E: nsh> dmesg
 
-    7. The NSH Telnet deamon (server) is enabled.  However, it cannot be
+       The nsh> dmesg command can be use at any time on any node to see
+       any debug output that you have selected.
+
+    9. The NSH Telnet deamon (server) is enabled.  However, it cannot be
        started automatically.  Rather, it must be started AFTER the network
        has been brought up using the NSH 'telnetd' command.  You would want
        to start the Telent daemon only if you want the node to serve Telent
@@ -509,7 +516,7 @@ Configurations
        This is necessary because the IP address is assigned by the the
        Coordinator and may not be known a priori.
 
-    8. This configuration also includes the Telnet client program.  This
+   10. This configuration also includes the Telnet client program.  This
        will allow you to execute a NSH one a node from the command line on
        a different node. Like:
 
@@ -580,6 +587,80 @@ Configurations
          potentially be verifying only that the design is implemented
          incorrectly in compatible way on both the client and server sides.
 
+  mrf24j40-starhub and mrf24j40-starpoint
+
+    These two configurations implement hub and and star endpoint in a
+    star topology.  Both configurations derive from the mrf24j40-6lowpan
+    configuration and most of the notes there apply here as well.
+
+    1. You must must have three clicker2-stm32 boards each with an MRF24J40
+       click board in order to run these tests:  One that servers as the
+       star hub and at least two star endpoints.
+
+    2. The star point configuration differs from the primarily in the
+       mrf24j40-6lowpan in following is also set:
+
+         CONFIG_NET_STAR=y
+         CONFIG_NET_STARPOINT=y
+
+       The CONFIG_NET_STARPOINT selection informs the endpoint that is
+       must send all frames to the hub of the star, rather than directly
+       to the recipient.
+
+       The star hub configuration, on the other hand, differs from the
+       mrf24j40-6lowpan in these fundamental ways:
+
+         CONFIG_NET_STAR=y
+         CONFIG_NET_STARHUB=y
+         CONFIG_NET_IPFORWARD=y
+
+       The CONFIG_NET_IPFORWARD selection informs the hub that if it
+       receives any packets that are not destined for the hub, it should
+       forward those packets appropriately.
+
+    3. Telnet:  The star point configuration supports the Telnet daemon,
+       but not the Telnet client; the star hub configuration supports
+       the Telnet client, but not the Telnet daemon.  Therefore, the
+       star hub can Telnet to any point in the star, the star endpoints
+       cannot initiate telnet sessions.
+
+    4. TCP and UDP Tests:  The same TCP and UDP tests as described for
+       the mrf24j40-6lowpan coniguration are supported on the star
+       endpoints, but NOT on the star hub.  Therefore, all network testing
+       is between endpoints with the hub acting, well, only like a hub.
+
+       The modified usage of the TCP test is show below with E1 E2
+       representing the two star endpoints and C: representing the
+       coordinator/hub.
+
+         C:  nsh> i8 /dev/ieee0 startpan
+         C:  nsh> 8 acceptassoc
+         E1: nsh> i8 assoc
+         E2: nsh> i8 assoc
+         C:  nsh> ifup wpan0
+         E1: nsh> ifup wpan0
+         E1: nsh> ifconfig           <-- To get the IP address of E1 endpoint
+         E1: nsh> telnetd            <-- Starts the Telnet daemon
+         E2: nsh> ifup wpan0
+         E2: nsh> ifconfig           <-- To get the IP address of E2 endpoint
+         E2: nsh> telnetd            <-- Starts the Telnet daemon
+         E1: nsh> tcpserver &
+         E2: nsh> tcpclient <server-ip> &
+
+       Where <server-ip> is the IP address of the E1 endpoint.
+
+       The nsh> dmesg command can be use at any time on any node to see
+       any debug output that you have selected.
+
+       Telenet sessions may be initiated from the hub:
+
+         C: nsh> telnet <server-ip> <-- Runs the Telnet client
+
+       Where <server-ip> is the IP address of either the E1 or I2 endpoints.
+
+    STATUS:
+      2017-06-29:  Configurations added but not yet tested.
+
   nsh:
 
     Configures the NuttShell (nsh) located at examples/nsh.  This

configs/clicker2-stm32/mrf24j40-6lowpan/defconfig

@@ -992,6 +992,9 @@ CONFIG_NET_6LOWPAN_MAXAGE=20
 CONFIG_NET_6LOWPAN_MAX_MACTRANSMITS=4
 CONFIG_NET_6LOWPAN_MTU=1294
 CONFIG_NET_6LOWPAN_TCP_RECVWNDO=1220
+CONFIG_NET_HAVE_STAR=y
+# CONFIG_NET_IPFORWARD is not set
+# CONFIG_NET_STAR is not set
 
 #
 # Socket Support

configs/clicker2-stm32/mrf24j40-starhub/Make.defs

@@ -0,0 +1,122 @@
+############################################################################
+# configs/clicker2-stm32/mrf24j40-starhub/Make.defs
+#
+#   Copyright (C) 2017 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+include ${TOPDIR}/.config
+include ${TOPDIR}/tools/Config.mk
+include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
+
+LDSCRIPT = flash.ld
+
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  DIRLINK = $(TOPDIR)/tools/copydir.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
+  ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
+  ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
+else
+  # Linux/Cygwin-native toolchain
+  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(CROSSDEV)ar rcs
+NM = $(CROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  ARCHOPTIMIZATION = -g
+endif
+
+ifneq ($(CONFIG_DEBUG_NOOPT),y)
+  ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions -fcheck-new -fno-rtti
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
+ARCHWARNINGSXX = -Wall -Wshadow -Wundef
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-gotoff.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+# Loadable module definitions
+
+CMODULEFLAGS = $(CFLAGS) -mlong-calls # --target1-abs
+
+LDMODULEFLAGS = -r -e module_initialize
+ifeq ($(WINTOOL),y)
+  LDMODULEFLAGS += -T "${shell cygpath -w $(TOPDIR)/libc/modlib/gnu-elf.ld}"
+else
+  LDMODULEFLAGS += -T $(TOPDIR)/libc/modlib/gnu-elf.ld
+endif
+
+ASMEXT = .S
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  LDFLAGS += -g
+endif
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
+HOSTLDFLAGS =

configs/clicker2-stm32/mrf24j40-starpoint/Make.defs

@@ -0,0 +1,122 @@
+############################################################################
+# configs/clicker2-stm32/mrf24j40-starpoint/Make.defs
+#
+#   Copyright (C) 2017 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+include ${TOPDIR}/.config
+include ${TOPDIR}/tools/Config.mk
+include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
+
+LDSCRIPT = flash.ld
+
+ifeq ($(WINTOOL),y)
+  # Windows-native toolchains
+  DIRLINK = $(TOPDIR)/tools/copydir.sh
+  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
+  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
+  ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
+  ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
+  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
+else
+  # Linux/Cygwin-native toolchain
+  MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
+  ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
+  ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
+  ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+AR = $(CROSSDEV)ar rcs
+NM = $(CROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  ARCHOPTIMIZATION = -g
+endif
+
+ifneq ($(CONFIG_DEBUG_NOOPT),y)
+  ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions -fcheck-new -fno-rtti
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
+ARCHWARNINGSXX = -Wall -Wshadow -Wundef
+ARCHDEFINES =
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRADEFINES)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-gotoff.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+# Loadable module definitions
+
+CMODULEFLAGS = $(CFLAGS) -mlong-calls # --target1-abs
+
+LDMODULEFLAGS = -r -e module_initialize
+ifeq ($(WINTOOL),y)
+  LDMODULEFLAGS += -T "${shell cygpath -w $(TOPDIR)/libc/modlib/gnu-elf.ld}"
+else
+  LDMODULEFLAGS += -T $(TOPDIR)/libc/modlib/gnu-elf.ld
+endif
+
+ASMEXT = .S
+OBJEXT = .o
+LIBEXT = .a
+EXEEXT =
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+  LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+  LDFLAGS += -g
+endif
+
+HOSTCC = gcc
+HOSTINCLUDES = -I.
+HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
+HOSTLDFLAGS =

configs/sim/sixlowpan/defconfig

@@ -556,6 +556,9 @@ CONFIG_NET_6LOWPAN_MAXAGE=20
 CONFIG_NET_6LOWPAN_MAX_MACTRANSMITS=4
 CONFIG_NET_6LOWPAN_MTU=1294
 CONFIG_NET_6LOWPAN_TCP_RECVWNDO=102
+CONFIG_NET_HAVE_STAR=y
+# CONFIG_NET_IPFORWARD is not set
+# CONFIG_NET_STAR is not set
 
 #
 # Socket Support
@@ -713,6 +716,7 @@ CONFIG_IEEE802154_DEFAULT_EADDR=0x00fade00deadbeef
 CONFIG_MAC802154_HPWORK=y
 CONFIG_MAC802154_NTXDESC=3
 CONFIG_MAC802154_NNOTIF=3
+CONFIG_MAC802154_NPANDESC=5
 CONFIG_IEEE802154_IND_PREALLOC=20
 CONFIG_IEEE802154_IND_IRQRESERVE=10
 # CONFIG_IEEE802154_MACDEV is not set
@@ -894,6 +898,7 @@ CONFIG_BUILTIN_PROXY_STACKSIZE=2048
 # CONFIG_EXAMPLES_MODBUS is not set
 # CONFIG_EXAMPLES_MOUNT is not set
 CONFIG_EXAMPLES_NETTEST=y
+CONFIG_EXAMPLES_NETTEST_SENDSIZE=4096
 CONFIG_EXAMPLES_NETTEST_STACKSIZE1=4096
 CONFIG_EXAMPLES_NETTEST_PRIORITY1=100
 CONFIG_EXAMPLES_NETTEST_LOOPBACK=y
@@ -1028,6 +1033,7 @@ CONFIG_NETUTILS_NETLIB=y
 # CONFIG_NETUTILS_NTPCLIENT is not set
 # CONFIG_NETUTILS_PPPD is not set
 # CONFIG_NETUTILS_SMTP is not set
+# CONFIG_NETUTILS_TELNETC is not set
 # CONFIG_NETUTILS_TELNETD is not set
 # CONFIG_NETUTILS_TFTPC is not set
 # CONFIG_NETUTILS_WEBCLIENT is not set
@@ -1103,6 +1109,7 @@ CONFIG_NSH_DISABLE_SHUTDOWN=y
 # CONFIG_NSH_DISABLE_SLEEP is not set
 # CONFIG_NSH_DISABLE_TIME is not set
 # CONFIG_NSH_DISABLE_TEST is not set
+# CONFIG_NSH_DISABLE_TELNETD is not set
 # CONFIG_NSH_DISABLE_UMOUNT is not set
 # CONFIG_NSH_DISABLE_UNAME is not set
 # CONFIG_NSH_DISABLE_UNSET is not set

net/Kconfig

@@ -285,15 +285,6 @@ menuconfig NET_IPv6
 source "net/neighbor/Kconfig"
 source "net/sixlowpan/Kconfig"
 
-endmenu # Internet Protocol Selection
-
-config NET_HAVE_STAR
-	bool
-	default n
-	---help---
-		Automatically enabled if at least one selected L2 protocol supports
-		a STAR topology.
-
 config NET_IPFORWARD
 	bool "Enable L2 forwarding"
 	default n
@@ -308,38 +299,7 @@ config NET_IPFORWARD
 		reason why IPv4 forwarding has not been implemented, it just has
 		not yet been done.
 
-config NET_STAR
+endmenu # Internet Protocol Selection
-	bool "Enable star topology"
-	default n
-	depends on NET_HAVE_STAR && NET_IPv6
-	---help---
-		Enable support for a star network topology.
-
-		NOTE: Currently only supported by 6LoWPAN.
-		NOTE: L2 forwarding only supported for IPv6.
-
-choice
-	prompt "Node role"
-	depends on NET_STARTOPOLOGY
-	default NET_STARTPOINT
-	---help---
-		Specifies the role of this not in the star configuration.
-
-config NET_STARPOINT
-	bool "Point node in star"
-	---help---
-		The node is a "point" in the star configuration and must send all
-		packets to the star hub node.
-
-config NET_STARHUB
-	bool "Hub node of star"
-	select NET_IPFORWARD
-	---help---
-		This is the "hub" node in the star configurations.  It will receive
-		packets packets from all "point" nodes and perform L2 forwarding of
-		the packets that are not destined for this node.
-
-endchoice # Node role
 
 source "net/socket/Kconfig"
 source "net/pkt/Kconfig"
@@ -361,10 +321,54 @@ config NET_STATISTICS
 	---help---
 		Network layer statistics on or off
 
+config NET_HAVE_STAR
+	bool
+	default n
+	---help---
+		Automatically enabled if at least one selected L2 protocol supports
+		a STAR topology.  In order to support the star topology, the L2
+		protocol must support relaying all packets to a well-known hub node.
+
+menu "Network Topologies"
+
+config NET_STAR
+	bool "Enable star topology"
+	default n
+	depends on NET_HAVE_STAR && NET_IPv6
+	---help---
+		Enable support for a star network topology.
+
+		NOTE: Currently only supported by 6LoWPAN.
+		NOTE: L2 forwarding only supported for IPv6.
+
+choice
+	prompt "Node role"
+	depends on NET_STAR
+	default NET_STARPOINT
+	---help---
+		Specifies the role of this not in the star configuration.
+
+config NET_STARPOINT
+	bool "Point node in star"
+	---help---
+		The node is a "point" in the star configuration and must send all
+		packets to the star hub node.
+
+config NET_STARHUB
+	bool "Hub node of star"
+	select NET_IPFORWARD
+	---help---
+		This is the "hub" node in the star configurations.  It will receive
+		packets packets from all "point" nodes and perform L2 forwarding of
+		the packets that are not destined for this node.
+
+endchoice # Node role
+endmenu # Network Topologies
+
 source "net/route/Kconfig"
 
 config NET_HOSTNAME
-	string "Host name for current machine"
+	string "Host name for this device"
 	default ""
 	---help---
 		A unique name to identify device on the network

net/devif/ipv6_forward.c

@@ -39,8 +39,13 @@
 
 #include <nuttx/config.h>
 
+#include <debug.h>
 #include <errno.h>
 
+#include <nuttx/net/netdev.h>
+#include <nuttx/net/netstats.h>
+
+#include "netdev/netdev.h"
 #include "sixlowpan/sixlowpan.h"
 #include "devif/devif.h"
 
@@ -85,8 +90,6 @@ static int ipv6_packet_conversion(FAR struct net_driver_s *dev,
 #ifdef CONFIG_NET_UDP
       if (ipv6->proto == IP_PROTO_UDP)
         {
-          FAR struct ipv6_hdr_s *ipv6 = (FAR struct ipv6_hdr_s *)dev->d_buf;
-
           /* Let 6LoWPAN convert IPv6 UDP output into IEEE802.15.4 frames. */
 
           sixlowpan_udp_send(dev, fwddev, ipv6);

net/devif/ipv6_input.c

@@ -250,6 +250,9 @@ int ipv6_input(FAR struct net_driver_s *dev)
   FAR struct ipv6_hdr_s *ipv6 = IPv6BUF;
   uint16_t hdrlen;
   uint16_t pktlen;
+#ifdef CONFIG_NET_IPFORWARD
+  int ret;
+#endif
 
   /* This is where the input processing starts. */
 
@@ -350,7 +353,7 @@ int ipv6_input(FAR struct net_driver_s *dev)
 #ifdef CONFIG_NET_IPFORWARD
           /* Not destined for us, try to forward the packet */
 
-          ret = ipv6forward(dev, ipv6);
+          ret = ipv6_forward(dev, ipv6);
           if (ret >= 0)
             {
               /* The packet was forwarded.  Return success; d_len will

net/sixlowpan/sixlowpan_udpsend.c

@@ -472,12 +472,9 @@ void sixlowpan_udp_send(FAR struct net_driver_s *dev,
 
           sixlowpan_addrfromip(ipv6udp->ipv6.destipaddr, &destmac);
 
-          /* Get the IPv6 + UDP combined header length.  The size of the UDP
+          /* Get the IPv6 + UDP combined header length. */
-           * header is encoded in the top 4 bits of the udpoffset field (in
-           * units of 32-bit words).
-           */
 
-          hdrlen = IPv6_HDRLEN + (((uint16_t)ipv6udp->udp.udpoffset >> 4) << 2);
+          hdrlen = IPv6_HDRLEN + UDP_HDRLEN;
 
           /* Drop the packet if the buffer length is less than this. */