Bump version: 1.3.0.50-ea1c-dirty → 1.4.0

Change-Id: I5ca7ada037a9b91c3b747cea6d83654d0b9afed3

.gitignore

@@ -69,3 +69,14 @@ tests/*/*_test
 tests/testsuite
 tests/testsuite.log
 tests/package.m4
+
+# manuals
+doc/manuals/*.html
+doc/manuals/*.svg
+doc/manuals/*.pdf
+doc/manuals/*__*.png
+doc/manuals/*.check
+doc/manuals/generated/
+doc/manuals/osmomsc-usermanual.xml
+doc/manuals/common
+doc/manuals/build

Makefile.am

@@ -1,5 +1,5 @@
 ## Process this file with automake to produce Makefile.in
-SUBDIRS = lib gtp ggsn sgsnemu doc tests
+SUBDIRS = lib gtp ggsn sgsnemu doc contrib tests
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libgtp.pc
@@ -12,4 +12,7 @@ dist-hook:
 
 EXTRA_DIST = git-version-gen .version README.md README.FreeBSD README.MacOSX
 
+AM_DISTCHECK_CONFIGURE_FLAGS = \
+	--with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir)
+
 @RELMAKE@

README.md

@@ -263,8 +263,7 @@ following:
 
 1. Install sgsnemu on a Linux Box. See under installation above.
 2. Connect your Linux box with sgsnemu installed to the GPRS core
-network. Use the same LAN switch as the one your SGSN is connected
-to. You also need a free IP address that can be used by sgsnemu.
+network. You also need a free IP address that can be used by sgsnemu.
 3. You need to configure networking in terms of interface address,
 subnet mask and default route. See the Linux Networking HOWTO for
 details.

configure.ac

@@ -1,14 +1,13 @@
 # Process this file with autoconf to produce a configure script.
-AC_INIT(osmo-ggsn, m4_esyscmd([./git-version-gen .tarball-version]), osmocom-net-gprs@lists.osmocom.org)
+AC_INIT([osmo-ggsn],[m4_esyscmd(./git-version-gen .tarball-version)],[osmocom-net-gprs@lists.osmocom.org])
 AC_CONFIG_SRCDIR([gtp/gtp.c])
-AM_CONFIG_HEADER([config.h])
-#AC_CONFIG_HEADER([config.h])
+AC_CONFIG_HEADERS([config.h])
 
 dnl *This* is the root dir, even if an install-sh exists in ../ or ../../
 AC_CONFIG_AUX_DIR([.])
 
 AC_CONFIG_TESTDIR(tests)
-AC_CANONICAL_SYSTEM
+AC_CANONICAL_TARGET
 
 dnl kernel style compile messages
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
@@ -18,7 +17,6 @@ AC_PROG_CC
 AC_PROG_INSTALL
 AC_PROG_AWK
 AC_PROG_CPP
-AC_PROG_CXX
 LT_INIT
 
 dnl check for pkg-config (explained in detail in libosmocore/configure.ac)
@@ -66,7 +64,7 @@ AC_ARG_ENABLE([gtp-linux],
 	[enable_gtp_linux="$enableval"], [enable_gtp_linux="no"])
 
 AS_IF([test "x$enable_gtp_linux" = "xyes"], [
-	PKG_CHECK_MODULES([LIBGTPNL], [libgtpnl >= 1.0.0])
+	PKG_CHECK_MODULES([LIBGTPNL], [libgtpnl >= 1.2.0])
 ])
 
 AM_CONDITIONAL([ENABLE_GTP_KERNEL], [test "$enable_gtp_linux" = "yes"])
@@ -76,8 +74,12 @@ AC_HEADER_STDC
 AC_HEADER_SYS_WAIT
 AC_CHECK_HEADERS([arpa/inet.h fcntl.h netdb.h netinet/in.h stdint.h stdlib.h string.h sys/ioctl.h sys/socket.h sys/time.h unistd.h])
 
-# Check for if header
-AC_CHECK_HEADERS([linux/if.h net/if.h])
+# Check for if header. Some versions of linux/if.h fail without sys/socket.h included beforehand:
+# see https://algorithmicallyrandom.blogspot.com/2012/07/error-on-including-include.html
+AC_CHECK_HEADERS([linux/if.h net/if.h], [], [], [#ifdef HAVE_SYS_SOCKET_H
+                                                # include <sys/socket.h>
+                                                # endif
+                                                ])
 
 # Check for tun header
 AC_CHECK_HEADERS([linux/if_tun.h net/if_tun.h])
@@ -136,9 +138,9 @@ adl_FUNC_GETOPT_LONG
 
 AM_INIT_AUTOMAKE([foreign])
 
-PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 0.6.4)
-PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 0.3.0)
-PKG_CHECK_MODULES(LIBOSMOCTRL, libosmoctrl)
+PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 1.1.0)
+PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 1.1.0)
+PKG_CHECK_MODULES(LIBOSMOCTRL, libosmoctrl >= 1.1.0)
 
 AC_ARG_ENABLE(sanitize,
 	[AS_HELP_STRING(
@@ -152,6 +154,85 @@ then
 	CPPFLAGS="$CPPFLAGS -fsanitize=address -fsanitize=undefined"
 fi
 
+AC_ARG_ENABLE(werror,
+	[AS_HELP_STRING(
+		[--enable-werror],
+		[Turn all compiler warnings into errors, with exceptions:
+		 a) deprecation (allow upstream to mark deprecation without breaking builds);
+		 b) "#warning" pragmas (allow to remind ourselves of errors without breaking builds)
+		]
+	)],
+	[werror=$enableval], [werror="no"])
+if test x"$werror" = x"yes"
+then
+	WERROR_FLAGS="-Werror"
+	WERROR_FLAGS+=" -Wno-error=deprecated -Wno-error=deprecated-declarations"
+	WERROR_FLAGS+=" -Wno-error=cpp" # "#warning"
+	CFLAGS="$CFLAGS $WERROR_FLAGS"
+	CPPFLAGS="$CPPFLAGS $WERROR_FLAGS"
+fi
+
+# Generate manuals
+AC_ARG_ENABLE(manuals,
+	[AS_HELP_STRING(
+		[--enable-manuals],
+		[Generate manual PDFs [default=no]],
+	)],
+	[osmo_ac_build_manuals=$enableval], [osmo_ac_build_manuals="no"])
+AM_CONDITIONAL([BUILD_MANUALS], [test x"$osmo_ac_build_manuals" = x"yes"])
+AC_ARG_VAR(OSMO_GSM_MANUALS_DIR, [path to common osmo-gsm-manuals files, overriding pkg-config and "../osmo-gsm-manuals"
+	fallback])
+if test x"$osmo_ac_build_manuals" = x"yes"
+then
+	# Find OSMO_GSM_MANUALS_DIR (env, pkg-conf, fallback)
+	if test -n "$OSMO_GSM_MANUALS_DIR"; then
+		echo "checking for OSMO_GSM_MANUALS_DIR... $OSMO_GSM_MANUALS_DIR (from env)"
+	else
+		OSMO_GSM_MANUALS_DIR="$($PKG_CONFIG osmo-gsm-manuals --variable=osmogsmmanualsdir 2>/dev/null)"
+		if test -n "$OSMO_GSM_MANUALS_DIR"; then
+			echo "checking for OSMO_GSM_MANUALS_DIR... $OSMO_GSM_MANUALS_DIR (from pkg-conf)"
+		else
+			OSMO_GSM_MANUALS_DIR="../osmo-gsm-manuals"
+			echo "checking for OSMO_GSM_MANUALS_DIR... $OSMO_GSM_MANUALS_DIR (fallback)"
+		fi
+	fi
+	if ! test -d "$OSMO_GSM_MANUALS_DIR"; then
+		AC_MSG_ERROR("OSMO_GSM_MANUALS_DIR does not exist! Install osmo-gsm-manuals or set OSMO_GSM_MANUALS_DIR.")
+	fi
+
+	# Find and run check-depends
+	CHECK_DEPENDS="$OSMO_GSM_MANUALS_DIR/check-depends.sh"
+	if ! test -x "$CHECK_DEPENDS"; then
+		CHECK_DEPENDS="osmo-gsm-manuals-check-depends"
+	fi
+	if ! $CHECK_DEPENDS; then
+		AC_MSG_ERROR("missing dependencies for --enable-manuals")
+	fi
+
+	# Put in Makefile with absolute path
+	OSMO_GSM_MANUALS_DIR="$(realpath "$OSMO_GSM_MANUALS_DIR")"
+	AC_SUBST([OSMO_GSM_MANUALS_DIR])
+fi
+
+# https://www.freedesktop.org/software/systemd/man/daemon.html
+AC_ARG_WITH([systemdsystemunitdir],
+     [AS_HELP_STRING([--with-systemdsystemunitdir=DIR], [Directory for systemd service files])],,
+     [with_systemdsystemunitdir=auto])
+AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"], [
+     def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
+
+     AS_IF([test "x$def_systemdsystemunitdir" = "x"],
+   [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
+    [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
+    with_systemdsystemunitdir=no],
+   [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
+AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
+      [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
+AM_CONDITIONAL([HAVE_SYSTEMD], [test "x$with_systemdsystemunitdir" != "xno"])
+
+AC_MSG_RESULT([CFLAGS="$CFLAGS"])
+AC_MSG_RESULT([CPPFLAGS="$CPPFLAGS"])
+
 AC_CONFIG_FILES([Makefile
                  doc/Makefile
                  doc/examples/Makefile
@@ -161,6 +242,9 @@ AC_CONFIG_FILES([Makefile
                  intl/Makefile
                  po/Makefile
                  sgsnemu/Makefile
+    doc/manuals/Makefile
+                 contrib/Makefile
+                 contrib/systemd/Makefile
                  tests/Makefile
                  tests/lib/Makefile
                  tests/gtp/Makefile

contrib/Makefile.am

@@ -0,0 +1 @@
+SUBDIRS = systemd

contrib/jenkins.sh

@@ -1,5 +1,11 @@
 #!/usr/bin/env bash
 # jenkins build helper script for openbsc.  This is how we build on jenkins.osmocom.org
+#
+# environment variables:
+# * GTP: configure GTP tunneling Linux kernel (values: "--enable-gtp-linux" or "--disable-gtp-linux")
+# * WITH_MANUALS: build manual PDFs if set to "1"
+# * PUBLISH: upload manuals after building if set to "1" (ignored without WITH_MANUALS = "1")
+#
 
 if ! [ -x "$(command -v osmo-build-dep.sh)" ]; then
 	echo "Error: We need to have scripts/osmo-deps.sh from http://git.osmocom.org/osmo-ci/ in PATH !"
@@ -18,12 +24,23 @@ osmo-clean-workspace.sh
 
 mkdir "$deps" || true
 
+if [ "x$GTP" == "x--enable-gtp-linux" ]; then
+	osmo-build-dep.sh libgtpnl
+fi
 osmo-build-dep.sh libosmocore "" ac_cv_path_DOXYGEN=false
 
 verify_value_string_arrays_are_terminated.py $(find . -name "*.[hc]")
 
 export PKG_CONFIG_PATH="$inst/lib/pkgconfig:$PKG_CONFIG_PATH"
 export LD_LIBRARY_PATH="$inst/lib"
+export PATH="$inst/bin:$PATH"
+
+# Additional configure options and depends
+CONFIG=""
+if [ "$WITH_MANUALS" = "1" ]; then
+	osmo-build-dep.sh osmo-gsm-manuals
+	CONFIG="--enable-manuals"
+fi
 
 set +x
 echo
@@ -35,8 +52,13 @@ set -x
 
 cd "$base"
 autoreconf --install --force
-./configure CFLAGS="-Werror" CPPFLAGS="-Werror" $GTP
+./configure --enable-sanitize --enable-werror $GTP $CONFIG
 $MAKE $PARALLEL_MAKE
-$MAKE distcheck
+DISTCHECK_CONFIGURE_FLAGS="$CONFIG" $MAKE distcheck
 
+if [ "$WITH_MANUALS" = "1" ] && [ "$PUBLISH" = "1" ]; then
+	make -C "$base/doc/manuals" publish
+fi
+
+$MAKE maintainer-clean
 osmo-clean-workspace.sh

contrib/systemd/Makefile.am

@@ -0,0 +1,6 @@
+EXTRA_DIST = osmo-ggsn.service
+
+if HAVE_SYSTEMD
+systemdsystemunit_DATA = \
+  osmo-ggsn.service
+endif

contrib/systemd/osmo-ggsn.service

@@ -5,7 +5,7 @@ After=networking.service
 [Service]
 Type=simple
 Restart=always
-ExecStart=/usr/bin/osmo-ggsn -c /etc/osmocom/osmo-ggsn.cfg -f
+ExecStart=/usr/bin/osmo-ggsn -c /etc/osmocom/osmo-ggsn.cfg
 RestartSec=2
 RestartPreventExitStatus=1
 

debian/changelog

@@ -1,3 +1,254 @@
+osmo-ggsn (1.4.0) unstable; urgency=medium
+
+  [ Max ]
+  * Don't return error on normal shutdown
+
+  [ Harald Welte ]
+  * process_pco() const-ify 'apn' argument
+  * ggsn: Remove magic numbers from pco_contains_proto()
+  * ggsn: const-ify input / read-only arguments of PCO related functions
+  * ggsn: Remove magic numbers from ipcp_contains_option()
+  * ggsn: Fix build_ipcp_pco() in presence of invalid IPCP content
+  * ggsn.c: Refactor PCO processing during PDP activation
+  * ggsn: Add minimalistic PAP support
+  * ggsn: More logging from PCO handling (e.g. in case of malconfiguration)
+  * sgsnemu: Fix format string argument count
+
+  [ Vadim Yanitskiy ]
+  * osmo-ggsn: fix VTY command for getting PDP contexts by APN
+  * osmo-ggsn: add VTY command to show PDP context by IPv4
+  * osmo-ggsn: check result of osmo_apn_to_str()
+  * osmo-ggsn: print requested / actual APN in PDP info
+  * osmo-ggsn: properly show subscriber's MSISDN in the VTY
+
+  [ Pau Espin Pedrol ]
+  * ggsn: Drop unused param force in apn_stop()
+  * gtp: Document spec reasoning drop of Rx DeleteCtxReq
+  * ggsn: Start gtp retrans timer during startup
+  * gtp: Take queue_resp into account to schedule retrans timer
+  * gtp: Fix typo dublicate->duplicate
+  * pdp: Introduce new API pdp_count_secondary
+  * gtp_create_pdp_ind: simplify code by reordering and compacting parsing
+  * gtp: Refactor code to use gtp_freepdp(_teardown) APIs
+  * cosmetic: gtp: Document free pdp ctx in non-teardown scenario
+  * gtp: Re-arrange free pdp ctx code in non-teardown scenario
+  * pdp: Drop unused code for haship
+  * cosmetic: gtp.h: Remove trailing whitespaces
+  * ggsn: Fix undefined behaviour shifting beyond sign bit
+  * gtp: Introduce new pdp APIs (and deprecate old ones) to support multiple GSN
+  * gtp: Make use of new libgtp APIs with multi-gsn support
+  * ggsn_vty_reference.xml: Update from last code changes
+  * ggsn: vty: Require ggsn param in <show pdp-context> cmd
+  * sgsnemu: Replace use of deprecated libgtp API pdp_newpdp with new one
+  * cosmetic: gtp: queue: remove trailing whitespace
+  * gtp: Add missing headers
+  * gtp: queue.c: Document queue APIs
+  * gtp: queue: Add unit test queue_test
+  * ggsn: Avoid unaligned mem access reading PCO proto id
+  * ggsn: Use structures instead of raw arrays when parsing ipcp_hdr
+  * configure.ac: Replace obosolete macro AC_CANONICAL_SYSTEM
+  * configure.ac: Use brackets in AC_INIT params
+  * configure.ac: Use prefered AC_CONFIG_HEADERS over AM_CONFIG_HEADER
+  * configure.ac: some versions of linux/if.h require including sys/socket.h
+  * sgsnemu: Fix unaligned pointer access during ip/icmp checksum
+  * Remove undefined param passed to {logging,osmo_stats}_vty_add_cmds
+  * Require libosmocore 1.1.0
+
+  [ Oliver Smith ]
+  * debian: create -doc subpackage with pdf manuals
+  * ggsn: Use gtp_delete_context_req2() everywhere
+  * contrib/jenkins.sh: run "make maintainer-clean"
+
+  [ Daniel Willmann ]
+  * manuals: Add script to regenerate vty/counter documentation
+
+ -- Pau Espin Pedrol <pespin@sysmocom.de>  Wed, 07 Aug 2019 21:28:30 +0200
+
+osmo-ggsn (1.3.0) unstable; urgency=medium
+
+  [ Pau Espin Pedrol ]
+  * ggsn: ctrl iface: listen on IP configured by VTY
+  * gtp: Log type name of unexpected signalling message
+  * gtp: Allow recv DEL CTX REQ in sgsn and DEL CTX RSP in ggsn
+  * gtp: Log ignore CTX DEL REQ due to no teardown and only 1 ctx active
+  * gtp: Add new API to avoid freeing pdp contexts during DEL CTX REQ
+  * gtp: Add new replacement cb_recovery2 for cb_recovery
+  * Install systemd services with autotools
+  * Install sample cfg file to /etc/osmocom
+
+  [ Stefan Sperling ]
+  * fix unaligned access in build_ipcp_pco()
+  * fix support for multiple IPCP in PDP protocol configuration options
+  * check ioctl() call return value in tun_new()
+  * fix allocation of ippool's hash table
+  * replace bogus memcpy() call in ippool_newip()
+  * initialize local variable addr in ippool_new()
+  * fix format string error in ippool_printaddr()
+  * fix a format string directives in queue_seqset()
+  * properly store IPv6 addresses in struct tun_t
+
+  [ Harald Welte ]
+  * debian/rules: Don't overwrite .tarball-version
+  * osmo-ggsn.cfg: Ensure well-formed config file example
+  * sgsnemu: Fix printing of tun device name
+  * ippool.c: Use "%td" format string for ptrdiff_t
+  * initial version of OsmoGGSN user manual
+  * OsmoGGSN: Add VTY reference manual
+  * GGSN: Document how 'ip tuntap' is used for non-root; call netdev 'apn0'
+  * vty-ref: Update URI of docbook 5.0 schema
+
+  [ Alexander Couzens ]
+  * libgtp: implement gtp_clear_queues to clear req/resp queue
+
+  [ Neels Hofmeyr ]
+  * Importing history from osmo-gsm-manuals.git
+  * refactor Makefile build rules, don't use the FORCE
+  * GGSN: don't say 'NITB'
+  * OsmoGGSN: more info on non-root operation / tun creation
+  * OsmoGGSN: multiple instances: mention GTP port
+  * OsmoGGSN: add Routing section for IP forward and masquerading
+  * OsmoGGSN: typo: priveleges
+  * OsmoGGSN VTY ref: prep: convert newlines to unix
+  * OsmoGGSN vty: update VTY reference
+  * OsmoGGSN: fix VTY additions' node IDs
+  * OsmoGGSN: update vty reference
+  * ggsn: update vty reference
+
+  [ Max ]
+  * Expand OsmoGGSN manual
+
+  [ Oliver Smith ]
+  * build manuals moved here from osmo-gsm-manuals.git
+  * Fix DISTCHECK_CONFIGURE_FLAGS override
+  * contrib/jenkins.sh: build and publish manuals
+  * contrib: fix makedistcheck with disabled systemd
+
+ -- Harald Welte <laforge@gnumonks.org>  Sun, 20 Jan 2019 21:34:22 +0100
+
+osmo-ggsn (1.2.2) unstable; urgency=medium
+
+  [ Vadim Yanitskiy ]
+  * ggsn_vty.c: fix: use CONFIG_NODE as parent by default
+
+  [ Philipp Maier ]
+  * ggsn: fix misinterpreted length field in ipcp_contains_option()
+  * ggsn: make sure ipcp_option_hdr and and ipcp_hdr are packed
+
+ -- Pau Espin Pedrol <pespin@sysmocom.de>  Thu, 31 May 2018 12:44:54 +0200
+
+osmo-ggsn (1.2.1) unstable; urgency=medium
+
+  * debian/rules: Fix debian packaging after 1.2.0 release
+
+ -- Pau Espin Pedrol <pespin@sysmocom.de>  Fri, 04 May 2018 12:19:58 +0200
+
+osmo-ggsn (1.2.0) unstable; urgency=medium
+
+  [ Neels Hofmeyr ]
+  * fix compiler warnings: return 0 in main(), in 3 tests
+  * add --enable-sanitize config option
+  * sanitize build: ensure uint16/32 alignment in gtpie_test and in46a_test
+  * configure: add --enable-werror
+  * jenkins.sh: use --enable-werror configure flag, not CFLAGS
+
+  [ Harald Welte ]
+  * sgsnemu: Don't leak FILE handle in proc_read()
+  * sgsnemu: Fix format string in printing tun-device name
+  * sgsnemu: Make sure buffer has space for terminating-NUL
+  * sgsnemu: Free strings in error path
+  * gtp: Fix buffer overflow in imsi_gtp2str()
+  * gtp: Explicit OSMO_ASSERT to ensure pdp variable is set
+  * tun: Don't copy 16byte IPv6 address to 'struct in_addr'
+  * ippool: Correctly compute size of static pool
+  * remove unused argument to alloc_ippool_blacklist()
+  * factor out netdev_ip_local_get() from tun_ip_local_get()
+  * Properly NULL-out blacklist in alloc_ippool_blacklist()
+  * gtp_kernel: Change gtp_kernel_init() function signature
+  * gtp-kernel: Re-add support for kernel GTP-U acceleration
+  * gtp-kernel: Get rid of hard-coded kernel GTP device name
+  * gtp-kernel: shut down kernel GTP device in apn_down()
+  * gtp-kernel: Align logging for APN start in kernel-gtp case with that of TUN
+  * gtp-kernel: Avoid global state variable
+  * gtp-kernel: Make sure repeated calls to gtp_kernel_init() are safe
+  * gtp-kernel: proper cleanup in error path
+  * gtp-kernel: Get rid of SYS_ERR where not applicable
+  * gtp-kernel: Add function name to pdp_debug() function calls
+  * gtp-kernel: Add device nime in pdp_debug() log statements
+  * contrib/jenkins.sh: Allow jenkins job to specify if kernel GTP is used
+  * ggsn.c: Fix byte order of IPCP IPv4 DNS servers
+  * ggsn: Ignore PCO with length 0, don't abort processing
+  * README.md: Remove misleading sentence on sgsnemu
+  * Add talloc context introspection via VTY
+  * fix segfault in case of kernel gtp-u
+  * lib/tun.c: Generalize tun_sifflags() to netdev_sifflags
+  * lib/tun.c: generalize tun_*route() to netdev_*route()
+  * lib/tun.c: Generalize tun_{set,add}addr*() functions
+  * lib/tun: split generic network device related stuff to lib/netdev
+  * lib/netdev.c: Cosmetic changes (coding style / cleanups)
+  * ggsn: Don't explicitly use tun_setaddr() API anymore
+  * sgsnemu: Convert from tun_setaddr() to tun_addaddr()
+  * lib/tun: Remove tun_setaddr() API, as everyone is using tun_addaddr() now
+  * Move kernel GTP support from ggsn/ to lib/
+  * ggsn: don't use gtp_kernel_tunnel_{add,del}() for userspace tun
+
+  [ Pau Espin Pedrol ]
+  * ggsn_vty: Stop using deprecated API vty_install_default
+  * contrib/jenkins.sh: Enable Werror in C(PP)FLAGS
+  * examples: Add secondary ipv6 google DNS to osmo-ggsn.cfg
+  * tun_setaddr6: Fix log typo
+  * cosmetic: Reorder tun_addaddr to get rid of decl of tun_setaddr4
+  * ggsn.c: Print version of unhandled ip packet
+  * Remove unused empty src/Makefile.in
+  * tests: Split ipv6 specific tests into a new test group
+  * Add support for IPv4v6 End User Addresses
+  * contrib: jenkins.sh: Build libgtpnl as dep when building with gtp kernel support
+  * cosmetic: sgsnemu.c: Fix trailing whitespace
+  * ggsn.c: Improve logging info on link-local ipv6 addr not found
+  * tun.c: tun_addaddr: Fix segfault and wrong usage of tun_nlattr
+  * Set tun_addaddr ipv agnostic and add support for ipv6
+  * ggsn: Add 'ipv6 link-local' vty cmd
+  * ggsn_vty.c: Print ipv6 link-local cmd when writing config to file
+  * gtp.c: Fix trailing whitespace
+  * gtp.c: Determine GTP version from header
+  * gtp.c: Log unsupported GTP version number
+  * gtp/pdp: Fix trailing whitespace
+  * gtp/pdp: Remove unused APIs pdp_ntoeua pdp_euaton
+  * gtp.c: gtp_gpdu_ind: Convert ifelse to switch statement
+  * gtp.c: gtp_gpdu_ind: Early return to avoid use of uninitialized var
+  * gtp/gtp.c: Remove unused function char2ul_t
+  * gtp/gtp.c: Mark non exported functions as static
+  * gtp/gtp.c: Use uint8_t for version param in static functions
+  * ggsn: encaps_tun: Avoid forwarding packet if EUA is unassigned, fix crash
+  * ggsn: Validate packet src addr from MS
+  * ggsn: Parse PCO_IPCP
+  * ggsn: Parse PCO_IPCP for IPv4v6 pdp ctx
+  * ggsn: Print all addresses on successful pdp ctx creation
+  * ggsn.c: cb_tun_ind: Convert ifelse to switch statement
+  * ggsn.c: cb_tun_ind: log dst addr of packet without pdp ctx
+  * ggsn.c: cb_tun_ind: Don't drop packets targeting pdp ctx ll addr
+  * sgsnemu: Fix bad ptr during context deallocation
+  * sgsnemu: listen param is a host, not an interface
+  * use osmo_init_logging2
+
+  [ Max ]
+  * Log APN and tun names for packets
+  * Enable sanitize for CI tests
+  * Fix stow-enabled jenkins build failure
+  * Add GTP message names
+
+  [ Viktor Tsymbalyuk ]
+  * sgsnemu: sgsnemu stopped after recieving "Request accepted" from ggsn
+  * sgsnemu: created "pinghost" and "createif" modes for mutual exclusion
+  * sgsnemu: fix: no outgoing GTP-U in "createif" mode
+
+  [ Martin Hauke ]
+  * build: Remove AC_PROG_CXX, C++ is never used
+
+  [ Stefan Sperling ]
+  * remove the -f option from osmo-ggsn.service
+
+ -- Pau Espin Pedrol <pespin@sysmocom.de>  Thu, 03 May 2018 16:05:27 +0200
+
 osmo-ggsn (1.1.0) unstable; urgency=medium
 
   * libgtp: pdp.h: Addition of new tx_gpdu_seq struct member member

debian/control

@@ -7,7 +7,8 @@ Build-Depends: debhelper (>= 9),
                pkg-config,
                libdpkg-perl, git,
                dh-autoreconf,
-               libosmocore-dev (>= 0.8.0)
+               libosmocore-dev (>= 1.1.0),
+               osmo-gsm-manuals-dev
 Standards-Version: 3.9.6
 Vcs-Browser: http://git.osmocom.org/osmo-ggsn/
 Vcs-Git: git://git.osmocom.org/osmo-ggsn
@@ -22,7 +23,7 @@ Description: Osmocom Gateway GPRS Support Node (GGSN)
  operators as the interface between the Internet and the rest of the
  mobile network infrastructure.
 
-Package: libgtp2
+Package: libgtp5
 Architecture: any
 Multi-Arch: same
 Section: libs
@@ -41,7 +42,7 @@ Architecture: any
 Multi-Arch: same
 Section: libdevel
 Depends: ${misc:Depends},
-         libgtp2 (= ${binary:Version})
+         libgtp5 (= ${binary:Version})
 Description: Development files for libgtp
  OsmoGGSN is a Gateway GPRS Support Node (GGSN). It is used by mobile
  operators as the interface between the Internet and the rest of the
@@ -54,7 +55,7 @@ Package: osmo-ggsn-dbg
 Section: debug
 Architecture: any
 Priority: extra
-Depends: ${shlibs:Depends}, ${misc:Depends}, libgtp2 (= ${binary:Version}), osmo-ggsn (= ${binary:Version})
+Depends: ${shlibs:Depends}, ${misc:Depends}, libgtp5 (= ${binary:Version}), osmo-ggsn (= ${binary:Version})
 Multi-Arch: same
 Description: Debug symbols for OsmoGGSN
  OsmoGGSN is a Gateway GPRS Support Node (GGSN). It is used by mobile
@@ -65,7 +66,7 @@ Package: libgtp-dbg
 Section: debug
 Architecture: any
 Priority: extra
-Depends: ${shlibs:Depends}, ${misc:Depends}, libgtp2 (= ${binary:Version})
+Depends: ${shlibs:Depends}, ${misc:Depends}, libgtp5 (= ${binary:Version})
 Multi-Arch: same
 Description: Debug symbols for OsmoGGSN
  OsmoGGSN is a Gateway GPRS Support Node (GGSN). It is used by mobile
@@ -74,3 +75,12 @@ Description: Debug symbols for OsmoGGSN
  .
  The library libgtp implements the GTP protocol between SGSN and GGSN
  and this package contains the development files for this library.
+
+Package: osmo-ggsn-doc
+Architecture: all
+Section: doc
+Priority: optional
+Depends: ${misc:Depends}
+Description: ${misc:Package} PDF documentation
+ Various manuals: user manual, VTY reference manual and/or
+ protocol/interface manuals.

debian/osmo-ggsn-doc.install

@@ -0,0 +1 @@
+usr/share/doc/osmo-ggsn-doc/*.pdf

debian/osmo-ggsn.install

@@ -1,3 +1,5 @@
+/etc/osmocom/osmo-ggsn.cfg
+/lib/systemd/system/osmo-ggsn.service
 /usr/bin/osmo-ggsn
 /usr/bin/sgsnemu
 /usr/share/man/man8/*

debian/osmo-ggsn.service

@@ -1 +0,0 @@
-../contrib/osmo-ggsn.service

debian/rules

@@ -16,8 +16,11 @@ export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 
 override_dh_strip:
 	dh_strip -posmo-ggsn --dbg-package=osmo-ggsn-dbg
-	dh_strip -plibgtp2 --dbg-package=libgtp-dbg
+	dh_strip -plibgtp5 --dbg-package=libgtp-dbg
 
-override_dh_autoreconf:
-	echo $(VERSION) > .tarball-version
-	dh_autoreconf
+override_dh_auto_configure:
+	dh_auto_configure -- --with-systemdsystemunitdir=/lib/systemd/system --enable-manuals
+
+# Don't create .pdf.gz files (barely saves space and they can't be opened directly by most pdf readers)
+override_dh_compress:
+	dh_compress -X.pdf

doc/Makefile.am

@@ -4,4 +4,5 @@ EXTRA_DIST = $(man_MANS)
 
 SUBDIRS = \
 	examples \
+	manuals \
 	$(NULL)

doc/examples/Makefile.am

@@ -1,3 +1,8 @@
+osmoconfdir = $(sysconfdir)/osmocom
+osmoconf_DATA = osmo-ggsn.cfg
+
+EXTRA_DIST = osmo-ggsn.cfg
+
 CFG_FILES = find $(srcdir) -name '*.cfg*' | sed -e 's,^$(srcdir),,'
 
 dist-hook:

doc/manuals/Makefile.am

@@ -0,0 +1,18 @@
+EXTRA_DIST = osmoggsn-usermanual.adoc \
+    osmoggsn-usermanual-docinfo.xml \
+    osmoggsn-vty-reference.xml \
+    regen_doc.sh \
+    chapters \
+    vty
+
+if BUILD_MANUALS
+  ASCIIDOC = osmoggsn-usermanual.adoc
+  ASCIIDOC_DEPS = $(srcdir)/chapters/*.adoc
+  include $(OSMO_GSM_MANUALS_DIR)/build/Makefile.asciidoc.inc
+
+  VTY_REFERENCE = osmoggsn-vty-reference.xml
+  include $(OSMO_GSM_MANUALS_DIR)/build/Makefile.vty-reference.inc
+
+  OSMO_REPOSITORY=osmo-ggsn
+  include $(OSMO_GSM_MANUALS_DIR)/build/Makefile.common.inc
+endif

doc/manuals/chapters/configuration.adoc

@@ -0,0 +1,335 @@
+== Configuring OsmoGGSN
+
+All configuration of OsmoGGSN is performed using the VTY. For more
+general information on the VTY interface, see <<vty>>.
+
+=== Configuring a virtual GGSN instance
+
+OsmoGGSN can run multiple GGSN instances inside one program/process.
+Each GGSN instance binds to its own transport-layer GTP IP address and
+has its own set of APNs and associated IP address pools + tun/gtp
+devices.
+
+In most usage cases, yo will only have a single GGSN instance inside
+your configuration file, like in below example:
+
+.Example: Single GGSN configuration section
+----
+ggsn ggsn0
+ gtp state-dir /tmp
+ gtp bind-ip 127.0.0.6
+ apn internet
+  gtpu-mode tun
+  tun-device tun4
+  type-support v4
+  ip prefix dynamic 176.16.222.0/24
+  ip dns 0 192.168.100.1
+  ip dns 1 8.8.8.8
+  ip ifconfig 176.16.222.0/24
+  no shutdown
+----
+
+
+==== Creating/Editing a GGSN instance
+
+Creating/Editing a GGSN instance can be done by the following sequence
+of VTY commands:
+
+----
+OsmoGGSN> enable <1>
+OsmoGGSN# configure terminal <2>
+OsmoGGSN(config)# ggsn ggsn0 <3>
+OsmoGGSN(config-ggsn)# <4>
+----
+<1> Change into privileged mode
+<2> Enter the interactive configuration mode
+<3> Create or edit the GGSN instance `ggsn0`. The name can be any ASCII
+    string, its significance is only to the local user.
+<4> Your prompt is now in the `ggsn` config node, where you can
+    configure the properties of this GGSN instance.
+
+NOTE:: After creating a new GGSN instance, it is in `shutdown` mode. See
+<<unshutdown_apn>> to take it out of shutdown, but make sure to configure it fully
+before taking it out of shutdown.
+
+==== Configuring a GGSN instance
+
+The following two mandatory configuration statements have to be given
+for every GGSN instance:
+
+----
+OsmoGGSN(config-ggsn)# gtp state-dir /var/lib/ggsn/ggsn0 <1>
+OsmoGGSN(config-ggsn)# gtp bind-ip 127.0.0.6 <2>
+----
+<1> Store the GSN restart state in the specified directory
+<2> Bind the GGSN instance to the specified local IPv4 address
+
+There are some further configuration statements that can be used at the
+GGSN node, some examples are given below.  For a full list, see the
+_OsmoGGSN VTY reference manual_ <<vty-ref-osmoggsn>>.
+
+----
+OsmoGGSN(config-ggsn)# default-apn foobar <1>
+----
+<1> Configure a default APN to be used if the user-requested APN is not
+    found.  The named APN must previously be configured
+
+
+==== Deleting a GGSN instance
+
+A GGSN instance can be removed like this
+
+.Example: Deleting a GGSN instance
+----
+OsmoGGSN> enable <1>
+OsmoGGSN# configure terminal <2>
+OsmoGGSN(config)# no ggsn ggsn0 <3>
+----
+<1> Change into privileged mode
+<2> Enter the interactive configuration mode
+<3> Delete the GGSN instance
+
+
+==== Taking a GGSN instance out of shutdown
+
+.Example: Taking a GGSN instance out of shutdown
+----
+OsmoGGSN> enable <1>
+OsmoGGSN# configure terminal <2>
+OsmoGGSN(config)# ggsn ggsn0 <3>
+OsmoGGSN(config-ggsn)# no shutdown ggsn <4>
+----
+<1> Change into privileged mode
+<2> Enter the interactive configuration mode
+<3> Enter the config ndoe of the GGSN instance `ggsn0`
+<4> Take the GGSN instance out of shutdown
+
+
+==== Shutting a GGSN instance down
+
+If you would like to take a GGSN instance out of service, you can
+put it into shutdown mode.  This will make the entire GGSN unavailable
+to user traffic and permit you to e.g. reconfigure it before taking it
+out of shutdown again.
+
+.Example: Shutting down a GGSN instance
+----
+OsmoGGSN> enable <1>
+OsmoGGSN# configure terminal <2>
+OsmoGGSN(config)# ggsn ggsn0 <3>
+OsmoGGSN(config-ggsn)# shutdown ggsn <4>
+----
+<1> Change into privileged mode
+<2> Enter the interactive configuration mode
+<3> Enter the config ndoe of the GGSN instance `ggsn0`
+<4> Shut down the GGSN instance
+
+
+=== Configuring an Access Point Name
+
+An Access Point Name (APN) represents a connection to an external packet
+data network, such as the public Internet or private corporate networsk.
+
+APNs are selected by terminals (MS/UE) when establishing PDP contexts.
+
+Each OsmoGGSN GGSN instance can have any number of APNs configured.
+Each APN is identified by a string name.
+
+==== Creating/Editing an APN
+
+.Example: Creating a new APN
+----
+OsmoGGSN> enable <1>
+OsmoGGSN# configure terminal <2>
+OsmoGGSN(config)# ggsn ggsn0 <3>
+OsmoGGSN(config-ggsn)# apn internet <4>
+OsmoGGSN(config-ggsn-apn)# <5>
+----
+<1> Change into privileged mode
+<2> Enter the interactive configuration mode
+<3> Enter the config node of the GGSN instance `ggsn0`
+<4> Create or Edit an APN called `internet`
+<5> Your prompt is now in the `ggsn` config node, where you can
+    configure the properties of this GGSN instance.
+
+NOTE:: The newly-create APN is created in `shutdown` mode. See <<unshutdown_apn>> to take it
+out of shutdown.
+
+
+==== Configuring an APN
+
+.Example: Configuring an APN
+----
+OsmoGGSN(config-ggsn-apn)# gtpu-mode tun <1>
+OsmoGGSN(config-ggsn-apn)# type-support v4 <2>
+OsmoGGSN(config-ggsn-apn)# ip prefix dynamic 176.16.222.0/24 <3>
+OsmoGGSN(config-ggsn-apn)# ip dns 0 192.168.100.1 <4>
+OsmoGGSN(config-ggsn-apn)# ip dns 1 8.8.8.8 <5>
+OsmoGGSN(config-ggsn-apn)# ip ifconfig 176.16.222.0/24 <6>
+----
+<1> Use the userspace GTP-U handling using a TUN device
+<2> Support (only) IPv4 Addresses
+<3> Specify the pool of dynamic IPv4 addresses to be allocated to PDP
+    contexts
+<4> Specify the primary DNS server to be provided using IPCP/PCO
+<5> Specify the secondary DNS server to be provided using IPCP/PCO
+<6> Request OsmoGGSN to configure the `tun4` device network/netmask
+
+NOTE:: If you use the optional `ip ifconfig` command to set the network
+device address/mask, OsmoGGSN must run with root or `CAP_NET_ADMIN`
+support.  It might be better to configure related tun devices at system
+startup and run OsmoGGSN as non-privileged user.  See <<ggsn_no_root>> for more
+details.
+
+
+==== Deleting an APN
+
+An APN configuration can be removed like this
+
+.Example: Deleting an APN
+----
+OsmoGGSN> enable <1>
+OsmoGGSN# configure terminal <2>
+OsmoGGSN(config)# ggsn ggsn0 <3>
+OsmoGGSN(config-ggsn)# no apn internet <4>
+----
+<1> Change into privileged mode
+<2> Enter the interactive configuration mode
+<3> Enter the config node of the GGSN instance `ggsn0`
+<4> Delete the APN `internet`
+
+[[unshutdown_apn]]
+==== Taking an APN out of shutdown
+
+In order to bring a deactived APN in `shutdown` state into active
+operation, use the `no shutdown` command at the APN node as explained in
+the following example:
+
+.Example: Taking an APN out of shutdown
+----
+OsmoGGSN> enable <1>
+OsmoGGSN# configure terminal <2>
+OsmoGGSN(config)# ggsn ggsn0 <3>
+OsmoGGSN(config-ggsn)# apn internet <4>
+OsmoGGSN(config-ggsn-apn)# no shutdown <5>
+----
+<1> Change into privileged mode
+<2> Enter the interactive configuration mode
+<3> Enter the config ndoe of the GGSN instance `ggsn0`
+<4> Enter the config ndoe of the APN `internet`
+<5> Take the APN out of shutdown
+
+
+==== Shutting an APN down
+
+If you would like to take an APN instance out of service, you can
+put it into shutdown mode.  This will make the APN unavailable
+to user traffic and permit you to e.g. reconfigure it before taking it
+out of shutdown again.
+
+.Example: Shutting down an APN
+----
+OsmoGGSN> enable <1>
+OsmoGGSN# configure terminal <2>
+OsmoGGSN(config)# ggsn ggsn0 <3>
+OsmoGGSN(config-ggsn)# apn internet <4>
+OsmoGGSN(config-ggsn-apn)# shutdown <5>
+----
+<1> Change into privileged mode
+<2> Enter the interactive configuration mode
+<3> Enter the config ndoe of the GGSN instance `ggsn0`
+<4> Enter the config ndoe of the APN `internet`
+<5> Shut down the APN
+
+[[ggsn_no_root]]
+=== Configuring for running without root privileges
+
+It's possible to run OsmoGGSN without root privileges if the tun devices are already configured.
+
+The interface creation + configuration must then happen before osmo-ggsn starting up.  This can be
+achieved by means such as
+
+* a custom shell script run as root before starting osmo-ggsn (e.g. as init script)
+* systemd .netdev and .network files, if your system is using systemd-networkd (see `networkctl status`).
+
+==== Manual TUN device creation / configuration
+
+If you chose to go for custom shell/init scripts, you may use the `ip` program which is the standard
+tool for network interface configuration on Linux, part of the `iproute2` package.  In order to
+create a tun device, you must call it like this:
+
+.Example: iproute2 command to create a tun device
+----
+# ip tuntap add dev apn0 mode tun user username group groupname
+----
+
+Where _username_ and _groupname_ correspond to the User and Group that will have ownership over the
+device, i.e. the privileges which you intend to run osmo-ggsn under, and _apn0_ will be the
+name of the network device created.  After creating the interface, you can configure its addresses
+using standard means like `ip addr add` or your distribution-specific utilities/tools
+to match the `ip prefix dynamic` config item, and activate the link, for example:
+
+----
+# ip addr add 192.168.7.0/24 dev apn0
+# ip link set apn0 up
+----
+
+==== systemd based TUN device creation+configuration
+
+If you want to have systemd take care of creating and configuring a tun device for you,
+you can use the below example config files.
+
+.Example: device config via systemd-networkd using apn0.netdev
+----
+[NetDev]
+Name=apn0 <1>
+Kind=tun
+
+[Tun]
+User=username <2>
+Group=username <3>
+----
+<1> The network interface name of the newly-created device
+<2> The username under which you will run OsmoGGSN
+<3> The group name under which you will run OsmoGGSN
+
+.Example: network settings via systemd-networkd using ggsn.network
+----
+[Match]
+Name=apn0 <1>
+
+[Network]
+Address=192.168.7.1 <2>
+IPMasquerade=yes <3>
+----
+<1> The netowrk device name, which must match the one in the apn0.netdev unit file above
+<2> The local IP address configured on the device
+<3> Requesting systemd to configure IP masquerading for this interface.  Depending on your needs,
+    You may not want this if you have proper end-to-end routing set up, and want to have transparent
+    inbound IP access to your GPRS-attached devices.
+
+==== Config Changes
+
+With the tun device pre-configured in one of the ways outlined above, the main
+changes in your osmo-ggsn.cfg file are:
+
+* remove `ip ifconfig` directive,
+* make sure that `no shutdown` is present in the `apn` section as well as
+  `no shutdown ggsn` in the `ggsn` section.
+
+.Example: using externally configured tun device `apn0` as non-root
+----
+ggsn ggsn0
+ gtp state-dir /tmp
+ gtp bind-ip 127.0.0.6
+ apn internet
+  gtpu-mode tun
+  tun-device apn0
+  type-support v4
+  ip prefix dynamic 192.168.7.0/24
+  ip dns 0 192.168.100.1
+  ip dns 1 8.8.8.8
+  no shutdown
+ default-apn internet
+ no shutdown ggsn
+----

doc/manuals/chapters/overview.adoc

@@ -0,0 +1,145 @@
+[[chapter_introduction]]
+== Overview
+
+[[intro_overview]]
+=== About OsmoGGSN
+
+OsmoGGSN is a Free / Open Source Software implementation of the GPRS
+GGSN (Gateway GPRS support node) element in side the packet switched
+core network of 2G and 3G cellular networks.
+
+The GGSN function is the tunnel endpoint on the core network side,
+from where the external (IP) packet data network 
+
+=== Software Components
+
+==== GTP Implementation (libgtp)
+
+The OsmoGGSN source code includes a shared library implementation of
+the GTP protocol used on the GGSN-SGSN interface.  This library
+and associated header files are installed system-wide and are
+available to other programs/applications.
+
+In fact, libgtp is what the OsmoSGSN also uses for its use of GTP.
+
+==== sgsnemu
+
+In order to test OsmoGGSN without running a SGSN and other elements
+of a cellular network, there is a small command-line utility called
+*sgsnemu* which is able to simulate the customary operations of a SGSN
+towards the GGSN, such as a PDP Context Activation.
+
+*sgsnemu* can even be used for testing against other GGSNs, as the GTP
+protocol is standardized across implementations.
+
+==== osmo-ggsn
+
+*osmo-ggsn* is the actual name of the OsmoGGSN executable program.  It
+implements the GGSN functionality.  All parameters are set using the
+configuration file, by default located in *./osmo-ggsn.cfg*
+
+==== systemd service file
+
+In *contrib/osmo-ggsn.service* you can find a sample service file for
+OsmoGGSN which can be used with systemd.
+
+==== init script
+
+In *contrib/osmo-ggsn.init* you can find a sample init script to be used
+on systems with classic init process.
+
+=== Limitations
+
+OsmoGGSN supports both GTP0 (GSM 09.60) and GTP1 (3GPP 29.060). In the
+following tables the support of each individual message type is
+detailed. The numbers before each feature indicates the relevant
+section in the standard.
+
+==== GSM 09.60 (GTPv0)
+
+[options="header",cols="50%,15%,15%,15%,5%"]
+|===
+| Feature                | gtplib      | osmo-ggsn   | sgsnemu     | notes
+5+<|*7.4 Path Management Messages*
+|7.4.1 Echo Request      |Supported   |Supported   |Supported   |
+|7.4.2 Echo Response     |Supported   |Supported   |Supported   |
+|7.4.3 Version Not Supported      |Supported   |Supported   |Supported   |
+5+<| *7.5 Tunnel Management Messages*
+|7.5.1 Create PDP Context Request|Supported   |Supported   |Supported   |
+|7.5.2 Create PDP Context Response|Supported   |Supported   |Supported   |
+|7.5.3 Update PDP Context Request|Supported   |Supported   |Not         |
+|7.5.4 Update PDP Context Response|Supported   |Supported   |Not         |
+|7.5.5 Delete PDP Context Request|Supported   |Supported   |Supported   |
+|7.5.6 Delete PDP Context Response|Supported   |Supported   |Supported   |
+|7.5.7 Create AA PDP Context Request|Unsupported |Unsupported |Unsupported |
+|7.5.8 Create AA PDP Response|Unsupported |Unsupported |Unsupported |
+|7.5.9 Delete AA PDP Context Request|Unsupported |Unsupported |Unsupported |
+|7.5.10 Delete AA PDP Context Response|Unsupported |Unsupported |Unsupported |
+|7.5.11 Error Indication |Supported   |Supported   |Supported   |
+|7.5.12 PDU Notification Request|Unsupported |Unsupported |Unsupported |
+|7.5.13 PDU Notification Response|Unsupported |Unsupported |Unsupported |
+|7.5.14 PDU Notification Reject Request|Unsupported |Unsupported |Unsupported |
+|7.5.15 PDU Notification Reject Response|Unsupported |Unsupported |Unsupported |
+5+<| *7.6 Location Management Messages*
+|7.6.1 Send Routeing Information for GPRS Request|Unsupported |Unsupported |Not applicable  |
+|7.6.2 Send Routeing Information for GPRS Response|Unsupported |Unsupported |Not applicable  |
+|7.6.3 Failure Report Request|Unsupported |Unsupported |Not applicable |
+|7.6.3 Failure Report Response|Unsupported |Unsupported |Not applicable |
+|7.6.5 Note MS GPRS Present Request|Unsupported |Unsupported |Not applicable|
+|7.6.6 Note MS GPRS Present Response|Unsupported |Unsupported |Not applicable|
+5+<| *7.5 Mobility Management Messages*
+|7.5.1 Identification Request|Unsupported |Not applicable|Not applicable|
+|7.5.2 Identification Response|Unsupported |Not applicable|Not applicable |
+|7.5.3 SGSN Context Request|Unsupported |Not applicable|Not applicable|
+|7.5.4 SGSN Context Response|Unsupported |Not applicable|Not applicable|
+|7.5.5 SGSN Context Acknowledge|Unsupported |Not applicable|Not applicable|
+|===
+
+==== 3GPP 29.060 (GTPv1)
+
+[options="header",cols="50%,15%,15%,15%,5%"]
+|===
+|Feature                 |gtplib      |osmo-ggsn   |sgsnemu     |notes
+5+<|*7.2 Path Management Messages*
+|7.2.1 Echo Request      |Supported   |Supported   |Supported   |
+|7.2.2 Echo Response     |Supported   |Supported   |Supported   |
+|7.2.3 Version Not Supported|Supported   |Supported   |Supported   |
+|7.2.4 Extension Headers Notification|Supported   |Supported   |Supported   |
+5+<|*7.3 Tunnel Management Messages*
+|7.3.1 Create PDP Context Request|Supported   |Supported   |Supported   |1
+|7.3.2 Create PDP Context Response|Supported   |Supported   |Supported   |
+|7.3.3 Update PDP Context Request|Supported   |Supported   |Not applicable|1
+|7.3.4 Update PDP Context Response|Supported   |Supported   |Not applicable|
+|7.3.5 Delete PDP Context Request|Supported   |Supported   |Supported   |
+|7.3.6 Delete PDP Context Response|Supported   |Supported   |Supported   |
+|7.3.7 Error Indication  |Supported   |Supported   |Supported   |
+|7.3.8 PDU Notification Request|Unsupported |Unsupported |Unsupported |
+|7.3.9 PDU Notification Response|Unsupported |Unsupported |Unsupported |
+|7.3.10 PDU Notification Reject Request|Unsupported |Unsupported |Unsupported |
+|7.3.10 PDU Notification Reject Response|Unsupported |Unsupported |Unsupported |
+5+<|*7.4 Location Management Messages*
+|7.4.1 Send Routeing Information for GPRS Request|Unsupported |Unsupported |Not applicable  |
+|7.4.2 Send Routeing Information for GPRS Response|Unsupported |Unsupported |Not applicable  |
+|7.4.3 Failure Report Request|Unsupported |Unsupported |Not applicable|
+|7.4.3 Failure Report Response|Unsupported |Unsupported |Not applicable|
+|7.4.5 Note MS GPRS Present Request|Unsupported |Unsupported |Not applicable|
+|7.4.6 Note MS GPRS Present Response|Unsupported |Unsupported |Not applicable|
+5+<|*7.5 Mobility Management Messages*
+|7.5.1 Identification Request|Unsupported |Not applicable|Not applicable|
+|7.5.2 Identification Response|Unsupported |Not applicable |Not applicable|
+|7.5.3 SGSN Context Request|Unsupported |Not applicable|Not applicable|
+|7.5.4 SGSN Context Response|Unsupported |Not applicable |Not applicable|
+|7.5.5 SGSN Context Acknowledge|Unsupported |Not applicable|Not applicable|
+|7.5.6 Forward Relocation Request|Unsupported |Not applicable|Not applicable|
+|7.5.7 Forward Relocation Response|Unsupported |Not applicable|Not applicable|
+|7.5.8 Forward Relocation Complete|Unsupported |Not applicable|Not applicable|
+|7.5.9 Relocation Cancel Request|Unsupported |Not applicable|Not applicable|
+|7.5.10 Relocation Cancel Response|Unsupported |Not applicable|Not applicable|
+|7.5.11 Forward Relocation Complete     |Unsupported |Not applicable |Not applicable  |
+|7.5.12 Forward SRNS Context Acknowledge|Unsupported |Not applicable|Not applicable|
+|7.5.13 Forward SRNS Context|Unsupported |Not applicable|Not applicable|
+|===
+
+Notes
+
+1) The "Secondary PDP Context Activation Procedure" is not supported.

doc/manuals/chapters/running.adoc

@@ -0,0 +1,82 @@
+== Running OsmoGGSN
+
+The OsmoGGSN executable (`osmo-ggsn`) offers the following command-line
+arguments:
+
+=== SYNOPSIS
+
+*osmo-ggsn* [-h|-V] [-D] [-c 'CONFIGFILE']
+
+=== OPTIONS
+
+*-h, --help*::
+	Print a short help message about the supported options
+*-V, --version*::
+	Print the compile-time version number of the OsmoBTS program
+*-D, --daemonize*::
+	Fork the process as a daemon into background.
+*-c, --config-file 'CONFIGFILE'*::
+	Specify the file and path name of the configuration file to be
+	used. If none is specified, use `osmo-ggsn.cfg` in the current
+	working directory.
+
+=== Routing
+
+Operating the OpenGGSN tun device naturally creates a network setup with
+multiple interfaces. Consider:
+
+* Typical Linux setups prevent forwarding of packets between separate
+  interfaces by default. To let subscribers reach the internet uplink from the
+  tun device, it may be required to enable IP forwarding.
+
+* Having a locally defined address range assigned to the tun device requires
+  either sensible routing for this address range, or that masquerading is
+  enabled to allow your single uplink IP address to "proxy" for the tun.
+
+These are decisions to be made on a network administration level.
+
+In a trivial case where you have a single box serving GPRS to few subscribers
+on an arbitrary IP address range not known in the larger network, the easiest
+way to enable GPRS uplink would be to enable IP forwarding and masquerading.
+
+To manually enable IPv4 forwarding and masquerading ad-hoc, you can do:
+
+----
+sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"
+iptables -t nat -A POSTROUTING -o '*' -j MASQUERADE
+----
+
+(You may want to replace `*` with the network device name, like `-o eth0`)
+
+There are various ways to enable these settings persistently, please refer to
+your distribution's documentation -- e.g. look for @net.ipv4.ip_forward=1@ in
+@/etc/sysctl.d/@, and https://wiki.debian.org/iptables for masquerading.
+
+=== Multiple instances
+
+Running multiple instances of `osmo-ggsn` is possible if all GGSN instances
+are binding to different local IP addresse and all other interfaces (VTY,
+OML) are separated using the appropriate configuration options. The IP based
+interfaces are binding to local host by default. In order to separate the
+processes, the user has to bind those services to specific but different
+IP addresses.
+
+The VTY and the control interface can be bound to IP addresses from the loopback
+address range.
+
+.Example: Binding VTY and control interface to a specific ip-address
+----
+line vty
+ bind 127.0.0.2
+ctrl
+ bind 127.0.0.2
+----
+
+Also make sure to place each instance's GTP bind on a separate IP address (GTP
+uses a port number that is fixed in the GTP specifications, so it will not be
+possible to pick differing ports on the same IP address), like:
+
+----
+ggsn ggsn0
+ gtp bind-ip 127.0.0.2
+----

doc/manuals/osmoggsn-usermanual-docinfo.xml

@@ -0,0 +1,46 @@
+<revhistory>
+  <revision>
+    <revnumber>1</revnumber>
+    <date>August 2017</date>
+    <authorinitials>HW</authorinitials>
+    <revremark>
+      Initial version.
+    </revremark>
+  </revision>
+ </revhistory>
+
+<authorgroup>
+  <author>
+    <firstname>Harald</firstname>
+    <surname>Welte</surname>
+    <email>hwelte@sysmocom.de</email>
+    <authorinitials>HW</authorinitials>
+    <affiliation>
+      <shortaffil>sysmocom</shortaffil>
+      <orgname>sysmocom - s.f.m.c. GmbH</orgname>
+      <jobtitle>Managing Director</jobtitle>
+    </affiliation>
+  </author>
+</authorgroup>
+
+<copyright>
+  <year>2013-2017</year>
+  <holder>sysmocom - s.f.m.c. GmbH</holder>
+</copyright>
+
+<legalnotice>
+  <para>
+	Permission is granted to copy, distribute and/or modify this
+	document under the terms of the GNU Free Documentation License,
+	Version 1.3 or any later version published by the Free Software
+	Foundation; with no Invariant Sections, no Front-Cover Texts,
+	and no Back-Cover Texts.  A copy of the license is included in
+	the section entitled "GNU Free Documentation License".
+  </para>
+  <para>
+	The Asciidoc source code of this manual can be found at
+	<ulink url="http://git.osmocom.org/osmo-gsm-manuals/">
+		http://git.osmocom.org/osmo-gsm-manuals/
+	</ulink>
+  </para>
+</legalnotice>

doc/manuals/osmoggsn-usermanual.adoc

@@ -0,0 +1,29 @@
+OsmoGGSN User Manual
+====================
+Harald Welte <hwelte@sysmocom.de>
+
+
+include::./common/chapters/preface.adoc[]
+
+include::{srcdir}/chapters/overview.adoc[]
+
+include::{srcdir}/chapters/running.adoc[]
+
+//include::{srcdir}/chapters/control.adoc[]
+
+include::./common/chapters/vty.adoc[]
+
+include::./common/chapters/logging.adoc[]
+
+
+include::{srcdir}/chapters/configuration.adoc[]
+
+include::./common/chapters/control_if.adoc[]
+
+include::./common/chapters/port_numbers.adoc[]
+
+include::./common/chapters/bibliography.adoc[]
+
+include::./common/chapters/glossary.adoc[]
+
+include::./common/chapters/gfdl.adoc[]

doc/manuals/osmoggsn-vty-reference.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ex:ts=2:sw=42sts=2:et
+  -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+-->
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML 5.0//EN"
+"http://docbook.org/xml/5.0/dtd/docbook.dtd" [
+<!ENTITY chapter-vty      SYSTEM      "./common/chapters/vty.xml" >
+<!ENTITY sections-vty     SYSTEM      "generated/docbook_vty.xml"  >
+]>
+
+<book>
+  <info>
+    <revhistory>
+        <revision>
+            <revnumber>v1</revnumber>
+            <date>06th September 2017</date>
+            <authorinitials>hw</authorinitials>
+            <revremark>Initial version as of OsmoGGSN v1.0.0</revremark>
+        </revision>
+    </revhistory>
+
+    <title>OsmoGGSN VTY Reference</title>
+
+    <copyright>
+      <year>2017</year>
+    </copyright>
+
+    <legalnotice>
+      <para>This work is copyright by <orgname>sysmocom - s.f.m.c. GmbH</orgname>. All rights reserved.
+      </para>
+    </legalnotice>
+  </info>
+
+  <!-- Main chapters-->
+  &chapter-vty;
+</book>
+

doc/manuals/regen_doc.sh

@@ -0,0 +1,17 @@
+#!/bin/sh -x
+
+if [ -z "$DOCKER_PLAYGROUND" ]; then
+	echo "You need to set DOCKER_PLAYGROUND"
+	exit 1
+fi
+
+SCRIPT=$(realpath "$0")
+MANUAL_DIR=$(dirname "$SCRIPT")
+
+COMMIT=${COMMIT:-$(git log -1 --format=format:%H)}
+
+cd "$DOCKER_PLAYGROUND/scripts" || exit 1
+
+OSMO_GGSN_BRANCH=$COMMIT ./regen_doc.sh osmo-ggsn 4260 \
+	"$MANUAL_DIR/chapters/counters_generated.adoc" \
+	"$MANUAL_DIR/vty/ggsn_vty_reference.xml"

doc/manuals/vty/ggsn_vty_additions.xml

@@ -0,0 +1,30 @@
+<vtydoc xmlns='urn:osmocom:xml:libosmocore:vty:doc:1.0'>
+	<node id='config-line'>
+		<child_of nodeid='config' />
+		<name>Telnet/VTY Configuration Node</name>
+		<description>
+			Configure parameters of the Telnet/VTY Interface, such as to which IP address it should bind/listen to.
+		</description>
+	</node>
+	<node id='config-ctrl'>
+		<child_of nodeid='config' />
+		<name>CTRL Configuration Node</name>
+		<description>
+			Configure parameters of the CTRL Interface, such as to which IP address it should bind/listen to.
+		</description>
+	</node>
+	<node id='config-ggsn'>
+		<child_of nodeid='config' />
+		<name>GGSN Instance Configuration Node</name>
+		<description>
+			Configure an Instance of a (virtual) GGSN
+		</description>
+	</node>
+	<node id='config-ggsn-apn'>
+		<child_of nodeid='config-ggsn' />
+		<name>APN Configuration Node</name>
+		<description>
+			Configure an Access Point Name (APN) inside a GGSN Instance
+		</description>
+	</node>
+</vtydoc>

ggsn/Makefile.am

@@ -7,13 +7,9 @@ AM_CFLAGS = -O2 -D_GNU_SOURCE -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' -ggdb
 osmo_ggsn_LDADD = @EXEC_LDADD@ -lgtp -L../gtp ../lib/libmisc.a $(LIBOSMOCORE_LIBS) $(LIBOSMOCTRL_LIBS) $(LIBOSMOVTY_LIBS)
 
 if ENABLE_GTP_KERNEL
-AM_CFLAGS += -DGTP_KERNEL
-osmo_ggsn_LDADD += -lgtpnl
+AM_CFLAGS += -DGTP_KERNEL $(LIBGTPNL_CFLAGS)
+osmo_ggsn_LDADD += $(LIBGTPNL_LIBS)
 endif
 
 osmo_ggsn_DEPENDENCIES = ../gtp/libgtp.la ../lib/libmisc.a
-osmo_ggsn_SOURCES = ggsn_vty.c ggsn.c ggsn.h gtp-kernel.h icmpv6.c icmpv6.h checksum.c checksum.h
-
-if ENABLE_GTP_KERNEL
-osmo_ggsn_SOURCES += gtp-kernel.c
-endif
+osmo_ggsn_SOURCES = ggsn_vty.c ggsn.c ggsn.h icmpv6.c icmpv6.h checksum.c checksum.h

ggsn/ggsn.c

@@ -1,7 +1,7 @@
 /*
  * OsmoGGSN - Gateway GPRS Support Node
  * Copyright (C) 2002, 2003, 2004 Mondru AB.
- * Copyright (C) 2017 by Harald Welte <laforge@gnumonks.org>
+ * Copyright (C) 2017-2019 by Harald Welte <laforge@gnumonks.org>
  *
  * The contents of this file may be used under the terms of the GNU
  * General Public License Version 2, provided that the above copyright
@@ -47,6 +47,7 @@
 #include <osmocom/core/stats.h>
 #include <osmocom/core/rate_ctr.h>
 #include <osmocom/core/timer.h>
+#include <osmocom/core/utils.h>
 #include <osmocom/ctrl/control_if.h>
 #include <osmocom/ctrl/control_cmd.h>
 #include <osmocom/ctrl/control_vty.h>
@@ -56,15 +57,16 @@
 #include <osmocom/vty/stats.h>
 #include <osmocom/vty/ports.h>
 #include <osmocom/vty/command.h>
+#include <osmocom/vty/misc.h>
 #include <osmocom/gsm/apn.h>
 
 #include "../lib/tun.h"
 #include "../lib/ippool.h"
 #include "../lib/syserr.h"
 #include "../lib/in46_addr.h"
+#include "../lib/gtp-kernel.h"
 #include "../gtp/pdp.h"
 #include "../gtp/gtp.h"
-#include "gtp-kernel.h"
 #include "icmpv6.h"
 #include "ggsn.h"
 
@@ -106,13 +108,18 @@ static void pool_close_all_pdp(struct ippool_t *pool)
 		if (!pdp)
 			continue;
 		LOGPPDP(LOGL_DEBUG, pdp, "Sending DELETE PDP CTX due to shutdown\n");
-		gtp_delete_context_req(pdp->gsn, pdp, NULL, 1);
+		gtp_delete_context_req2(pdp->gsn, pdp, NULL, 1);
+		/* We have nothing more to do with pdp ctx, free it. Upon cb_delete_context
+		   called during this call we'll clean up ggsn related stuff attached to this
+		   pdp context. After this call, ippool member is cleared so
+		   data is no longer valid and should not be accessed anymore. */
+		gtp_freepdp_teardown(pdp->gsn, pdp);
 	}
 }
 
-int apn_stop(struct apn_ctx *apn, bool force)
+int apn_stop(struct apn_ctx *apn)
 {
-	LOGPAPN(LOGL_NOTICE, apn, "%sStopping\n", force ? "FORCED " : "");
+	LOGPAPN(LOGL_NOTICE, apn, "Stopping\n");
 	/* check if pools have any active PDP contexts and bail out */
 	pool_close_all_pdp(apn->v4.pool);
 	pool_close_all_pdp(apn->v6.pool);
@@ -124,13 +131,14 @@ int apn_stop(struct apn_ctx *apn, bool force)
 			LOGPAPN( LOGL_INFO, apn, "Running %s\n", apn->tun.cfg.ipdown_script);
 			tun_runscript(apn->tun.tun, apn->tun.cfg.ipdown_script);
 		}
+		if (apn->cfg.gtpu_mode == APN_GTPU_MODE_TUN) {
 			/* release tun device */
 			LOGPAPN(LOGL_INFO, apn, "Closing TUN device %s\n", apn->tun.tun->devname);
 			osmo_fd_unregister(&apn->tun.fd);
+		}
 		tun_free(apn->tun.tun);
 		apn->tun.tun = NULL;
 	}
-	gtp_kernel_stop(apn->tun.cfg.dev_name);
 
 	if (apn->v4.pool) {
 		LOGPAPN(LOGL_INFO, apn, "Releasing IPv4 pool\n");
@@ -194,6 +202,8 @@ int apn_start(struct apn_ctx *apn)
 	struct in46_prefix ipv6_tun_linklocal_ip;
 	struct in46_prefix *blacklist;
 	int blacklist_size;
+	struct gsn_t *gsn = apn->ggsn->gsn;
+	int rc;
 
 	if (apn->started)
 		return 0;
@@ -202,7 +212,7 @@ int apn_start(struct apn_ctx *apn)
 	switch (apn->cfg.gtpu_mode) {
 	case APN_GTPU_MODE_TUN:
 		LOGPAPN(LOGL_INFO, apn, "Opening TUN device %s\n", apn->tun.cfg.dev_name);
-		if (tun_new(&apn->tun.tun, apn->tun.cfg.dev_name)) {
+		if (tun_new(&apn->tun.tun, apn->tun.cfg.dev_name, false, -1, -1)) {
 			LOGPAPN(LOGL_ERROR, apn, "Failed to configure tun device\n");
 			return -1;
 		}
@@ -214,15 +224,46 @@ int apn_start(struct apn_ctx *apn)
 
 		/* Set TUN library callback */
 		tun_set_cb_ind(apn->tun.tun, cb_tun_ind);
+		break;
+	case APN_GTPU_MODE_KERNEL_GTP:
+		LOGPAPN(LOGL_INFO, apn, "Opening Kernel GTP device %s\n", apn->tun.cfg.dev_name);
+		if (apn->cfg.apn_type_mask & (APN_TYPE_IPv6|APN_TYPE_IPv4v6)) {
+			LOGPAPN(LOGL_ERROR, apn, "Kernel GTP currently supports only IPv4\n");
+			apn_stop(apn);
+			return -1;
+		}
+		if (gsn == NULL) {
+			/* skip bringing up the APN now if the GSN is not initialized yet.
+			 * This happens during initial load of the config file, as the
+			 * "no shutdown" in the ggsn node only happens after the "apn" nodes
+			 * are brought up */
+			LOGPAPN(LOGL_NOTICE, apn, "Skipping APN start\n");
+			return 0;
+		}
+		/* use GTP kernel module for data packet encapsulation */
+		if (tun_new(&apn->tun.tun, apn->tun.cfg.dev_name, true, gsn->fd0, gsn->fd1u)) {
+			LOGPAPN(LOGL_ERROR, apn, "Failed to configure Kernel GTP device\n");
+			return -1;
+		}
+		break;
+	default:
+		LOGPAPN(LOGL_ERROR, apn, "Unknown GTPU Mode %d\n", apn->cfg.gtpu_mode);
+		return -1;
+	}
+
+	/* common initialization below */
+
+	/* set back-pointer from TUN device to APN */
+	apn->tun.tun->priv = apn;
 
 	if (apn->v4.cfg.ifconfig_prefix.addr.len) {
 		LOGPAPN(LOGL_INFO, apn, "Setting tun IP address %s\n",
 			in46p_ntoa(&apn->v4.cfg.ifconfig_prefix));
-			if (tun_setaddr(apn->tun.tun, &apn->v4.cfg.ifconfig_prefix.addr, NULL,
+		if (tun_addaddr(apn->tun.tun, &apn->v4.cfg.ifconfig_prefix.addr, NULL,
 				apn->v4.cfg.ifconfig_prefix.prefixlen)) {
 			LOGPAPN(LOGL_ERROR, apn, "Failed to set tun IPv4 address %s: %s\n",
 				in46p_ntoa(&apn->v4.cfg.ifconfig_prefix), strerror(errno));
-				apn_stop(apn, false);
+			apn_stop(apn);
 			return -1;
 		}
 	}
@@ -230,53 +271,48 @@ int apn_start(struct apn_ctx *apn)
 	if (apn->v6.cfg.ifconfig_prefix.addr.len) {
 		LOGPAPN(LOGL_INFO, apn, "Setting tun IPv6 address %s\n",
 			in46p_ntoa(&apn->v6.cfg.ifconfig_prefix));
-			if (tun_setaddr(apn->tun.tun, &apn->v6.cfg.ifconfig_prefix.addr, NULL,
+		if (tun_addaddr(apn->tun.tun, &apn->v6.cfg.ifconfig_prefix.addr, NULL,
 				apn->v6.cfg.ifconfig_prefix.prefixlen)) {
 			LOGPAPN(LOGL_ERROR, apn, "Failed to set tun IPv6 address %s: %s. "
 				"Ensure you have ipv6 support and not used the disable_ipv6 sysctl?\n",
 				in46p_ntoa(&apn->v6.cfg.ifconfig_prefix), strerror(errno));
-				apn_stop(apn, false);
+			apn_stop(apn);
 			return -1;
 		}
 	}
 
+	if (apn->v6.cfg.ll_prefix.addr.len) {
+		LOGPAPN(LOGL_INFO, apn, "Setting tun IPv6 link-local address %s\n",
+			in46p_ntoa(&apn->v6.cfg.ll_prefix));
+		if (tun_addaddr(apn->tun.tun, &apn->v6.cfg.ll_prefix.addr, NULL,
+				apn->v6.cfg.ll_prefix.prefixlen)) {
+			LOGPAPN(LOGL_ERROR, apn, "Failed to set tun IPv6 link-local address %s: %s. "
+				"Ensure you have ipv6 support and not used the disable_ipv6 sysctl?\n",
+				in46p_ntoa(&apn->v6.cfg.ll_prefix), strerror(errno));
+			apn_stop(apn);
+			return -1;
+		}
+		apn->v6_lladdr = apn->v6.cfg.ll_prefix.addr.v6;
+	}
+
 	if (apn->tun.cfg.ipup_script) {
 		LOGPAPN(LOGL_INFO, apn, "Running ip-up script %s\n",
 			apn->tun.cfg.ipup_script);
 		tun_runscript(apn->tun.tun, apn->tun.cfg.ipup_script);
 	}
 
-		if (apn->cfg.apn_type_mask & (APN_TYPE_IPv6|APN_TYPE_IPv4v6)) {
-			if (tun_ip_local_get(apn->tun.tun, &ipv6_tun_linklocal_ip, 1, IP_TYPE_IPv6_LINK) < 1) {
-				LOGPAPN(LOGL_ERROR, apn, "Cannot obtain IPv6 link-local address of "
-					"interface: %s\n", strerror(errno));
-				apn_stop(apn, false);
+	if (apn->cfg.apn_type_mask & (APN_TYPE_IPv6|APN_TYPE_IPv4v6) &&
+	    apn->v6.cfg.ll_prefix.addr.len == 0) {
+		rc = tun_ip_local_get(apn->tun.tun, &ipv6_tun_linklocal_ip, 1, IP_TYPE_IPv6_LINK);
+		if (rc < 1) {
+			LOGPAPN(LOGL_ERROR, apn, "Cannot obtain IPv6 link-local address of interface: %s\n",
+				rc ? strerror(errno) : "tun interface has no link-local IP assigned");
+			apn_stop(apn);
 			return -1;
 		}
 		apn->v6_lladdr = ipv6_tun_linklocal_ip.addr.v6;
 	}
 
-		/* set back-pointer from TUN device to APN */
-		apn->tun.tun->priv = apn;
-		break;
-	case APN_GTPU_MODE_KERNEL_GTP:
-		LOGPAPN(LOGL_INFO, apn, "Opening Kernel GTP device %s\n", apn->tun.cfg.dev_name);
-		if (apn->cfg.apn_type_mask & (APN_TYPE_IPv6|APN_TYPE_IPv4v6)) {
-			LOGPAPN(LOGL_ERROR, apn, "Kernel GTP currently supports only IPv4\n");
-			apn_stop(apn, false);
-			return -1;
-		}
-		/* use GTP kernel module for data packet encapsulation */
-		if (gtp_kernel_init(apn->ggsn->gsn, apn->tun.cfg.dev_name,
-				    &apn->v4.cfg.ifconfig_prefix, apn->tun.cfg.ipup_script) < 0) {
-			return -1;
-		}
-		break;
-	default:
-		LOGPAPN(LOGL_ERROR, apn, "Unknown GTPU Mode %d\n", apn->cfg.gtpu_mode);
-		return -1;
-	}
-
 	/* Create IPv4 pool */
 	if (apn->v4.cfg.dynamic_prefix.addr.len) {
 		LOGPAPN(LOGL_INFO, apn, "Creating IPv4 pool %s\n",
@@ -288,7 +324,7 @@ int apn_start(struct apn_ctx *apn)
 				blacklist, blacklist_size)) {
 			LOGPAPN(LOGL_ERROR, apn, "Failed to create IPv4 pool\n");
 			talloc_free(blacklist);
-			apn_stop(apn, false);
+			apn_stop(apn);
 			return -1;
 		}
 		talloc_free(blacklist);
@@ -305,7 +341,7 @@ int apn_start(struct apn_ctx *apn)
 				blacklist, blacklist_size)) {
 			LOGPAPN(LOGL_ERROR, apn, "Failed to create IPv6 pool\n");
 			talloc_free(blacklist);
-			apn_stop(apn, false);
+			apn_stop(apn);
 			return -1;
 		}
 		talloc_free(blacklist);
@@ -335,28 +371,73 @@ static bool send_trap(const struct gsn_t *gsn, const struct pdp_t *pdp, const st
 static int delete_context(struct pdp_t *pdp)
 {
 	struct gsn_t *gsn = pdp->gsn;
-	struct ippoolm_t *ipp = (struct ippoolm_t *)pdp->peer;
 	struct apn_ctx *apn = pdp->priv;
+	struct ippoolm_t *member;
+	int i;
 
 	LOGPPDP(LOGL_INFO, pdp, "Deleting PDP context\n");
-	struct ippoolm_t *member = pdp->peer;
 
-	if (pdp->peer) {
+	for (i = 0; i < 2; i++) {
+		if (pdp->peer[i]) {
+			member = pdp->peer[i];
 			send_trap(gsn, pdp, member, "imsi-rem-ip"); /* TRAP with IP removal */
-		ippool_freeip(ipp->pool, ipp);
-	} else
+			ippool_freeip(member->pool, member);
+		} else if(i == 0)
 			LOGPPDP(LOGL_ERROR, pdp, "Cannot find/free IP Pool member\n");
+	}
 
+	if (apn->cfg.gtpu_mode == APN_GTPU_MODE_KERNEL_GTP) {
 		if (gtp_kernel_tunnel_del(pdp, apn->tun.cfg.dev_name)) {
 			LOGPPDP(LOGL_ERROR, pdp, "Cannot delete tunnel from kernel:%s\n",
 				strerror(errno));
 		}
+	}
 
 	return 0;
 }
 
 #include <osmocom/gsm/tlv.h>
 
+/* RFC 1332 */
+enum ipcp_options {
+	IPCP_OPT_IPADDR = 3,
+	IPCP_OPT_PRIMARY_DNS = 129,
+	IPCP_OPT_SECONDARY_DNS = 131,
+};
+
+struct ipcp_option_hdr {
+	uint8_t type;
+	uint8_t len;
+	uint8_t data[0];
+} __attribute__ ((packed));
+
+struct ipcp_hdr {
+	uint8_t code;
+	uint8_t id;
+	uint16_t len;
+	uint8_t options[0];
+} __attribute__ ((packed));
+
+/* determine if IPCP contains given option */
+static const uint8_t *ipcp_contains_option(const struct ipcp_hdr *ipcp, size_t ipcp_len,
+					   enum ipcp_options opt, size_t opt_minlen)
+{
+	const uint8_t *cur_opt = ipcp->options;
+
+	/* iterate over Options and check if protocol contained */
+	while (cur_opt + sizeof(struct ipcp_option_hdr) <= (uint8_t*)ipcp + ipcp_len) {
+		const struct ipcp_option_hdr *cur_opt_hdr = (const struct ipcp_option_hdr *)cur_opt;
+		/* length value includes 2 bytes type/length */
+		if (cur_opt_hdr->len < sizeof(struct ipcp_option_hdr))
+			return NULL;
+		if (cur_opt_hdr->type == opt &&
+		    cur_opt_hdr->len >= sizeof(struct ipcp_option_hdr) + opt_minlen)
+			return cur_opt;
+		cur_opt += cur_opt_hdr->len;
+	}
+	return NULL;
+}
+
 /* 3GPP TS 24.008 10.6.5.3 */
 enum pco_protocols {
 	PCO_P_LCP		= 0xC021,
@@ -389,110 +470,256 @@ enum pco_protocols {
 	PCO_P_REL_DATA_SVC	= 0x0018,
 };
 
-/* determine if PCO contains given protocol */
-static bool pco_contains_proto(struct ul255_t *pco, uint16_t prot)
-{
-	uint8_t *cur = pco->v + 1;
+struct pco_element {
+	uint16_t protocol_id;	/* network byte order */
+	uint8_t length;		/* length of data below */
+	uint8_t data[0];
+} __attribute__((packed));
 
-	/* iterate over PCO and check if protocol contained */
-	while (cur + 3 <= pco->v + pco->l) {
-		uint16_t cur_prot = osmo_load16be(cur);
-		uint8_t cur_len = cur[2];
-		if (cur_prot == prot)
-			return true;
-		if (cur_len == 0)
-			break;
-		cur += cur_len + 3;
+/*! Get the peer of pdp based on IP version used.
+ *  \param[in] pdp PDP context to select the peer from.
+ *  \param[in] v4v6 IP version to select. Valid values are 4 and 6.
+ *  \returns The selected peer matching the given IP version. NULL if not present.
+ */
+static struct ippoolm_t *pdp_get_peer_ipv(struct pdp_t *pdp, bool is_ipv6) {
+	uint8_t len1, len2, i;
+
+	if (is_ipv6) {
+		len1 = 8;
+		len2 = 16;
+	} else {
+		len1 = sizeof(struct in_addr);
+		len2 = len1;
 	}
-	return false;
+
+	for (i = 0; i < 2; i++) {
+		struct ippoolm_t * ippool = pdp->peer[i];
+		if (ippool && (ippool->addr.len == len1 || ippool->addr.len == len2))
+			return ippool;
+	}
+	return NULL;
 }
 
-/* determine if PDP context has IPv6 support */
-static bool pdp_has_v4(struct pdp_t *pdp)
+/* RFC 1334, section 3.2. Packet Format */
+struct pap_element {
+	uint8_t code;
+	uint8_t id;
+	uint16_t len; /* length including header */
+	uint8_t data[0];
+} __attribute__((packed));
+
+enum pap_code {
+	PAP_CODE_AUTH_REQ = 1,
+	PAP_CODE_AUTH_ACK = 2,
+	PAP_CODE_AUTH_NAK = 3,
+};
+
+static const char *pap_welcome = "Welcome to OsmoGGSN " PACKAGE_VERSION;
+
+/* Handle PAP protocol according to RFC 1334 */
+static void process_pco_element_pap(const struct pco_element *pco_in, struct msgb *resp,
+				    const struct apn_ctx *apn, struct pdp_t *pdp)
 {
-	if (pdp->eua.l == 4+2)
-		return true;
-	else
-		return false;
+	const struct pap_element *pap_in = (const struct pap_element *) pco_in->data;
+	uint16_t pap_in_len;
+	uint8_t peer_id_len;
+	const uint8_t *peer_id;
+	unsigned int pap_welcome_len;
+	uint8_t pap_out_size;
+	struct pap_element *pap_out;
+
+	if (pco_in->length < sizeof(struct pap_element))
+		goto ret_broken;
+
+	pap_in_len = osmo_load16be(&pap_in->len);
+	if (pco_in->length < pap_in_len)
+		goto ret_broken;
+	/* "pco_in->length > pap_in_len" is allowed: RFC1334 2.2 states:
+	   "Octets outside the range of the Length field should be treated as
+	   Data Link Layer padding and should be ignored on reception."
+	 */
+
+	switch (pap_in->code) {
+	case PAP_CODE_AUTH_REQ:
+		if (pap_in_len < sizeof(struct pap_element) + 1)
+			goto ret_broken_auth;
+		peer_id_len = pap_in->data[0];
+		if (pap_in_len < sizeof(struct pap_element) + 1 + peer_id_len)
+			goto ret_broken_auth;
+		peer_id = &pap_in->data[1];
+		LOGPPDP(LOGL_DEBUG, pdp, "PCO PAP PeerId = %s, ACKing\n",
+			osmo_quote_str((const char *)peer_id, peer_id_len));
+		/* Password-Length + Password following here, but we don't care */
+
+		/* Prepare response, we ACK all of them: */
+		pap_welcome_len = strlen(pap_welcome);
+		/* +1: Length field of pap_welcome Message */
+		pap_out_size = sizeof(struct pap_element) + 1 + pap_welcome_len;
+		pap_out = alloca(pap_out_size);
+		pap_out->code = PAP_CODE_AUTH_ACK;
+		pap_out->id = pap_in->id;
+		pap_out->len = htons(pap_out_size);
+		pap_out->data[0] = pap_welcome_len;
+		memcpy(pap_out->data+1, pap_welcome, pap_welcome_len);
+		msgb_t16lv_put(resp, PCO_P_PAP, pap_out_size, (uint8_t *) pap_out);
+		break;
+	case PAP_CODE_AUTH_ACK:
+	case PAP_CODE_AUTH_NAK:
+	default:
+		LOGPPDP(LOGL_NOTICE, pdp, "Unsupported PAP PCO Code %u, ignoring\n", pap_in->code);
+		break;
+	}
+	return;
+
+ret_broken_auth:
+	LOGPPDP(LOGL_NOTICE, pdp, "Invalid PAP AuthenticateReq: %s, ignoring\n",
+		osmo_hexdump_nospc((const uint8_t *)pco_in, pco_in->length));
+	return;
+
+ret_broken:
+	LOGPPDP(LOGL_NOTICE, pdp, "Invalid PAP PCO Length: %s, ignoring\n",
+		osmo_hexdump_nospc((const uint8_t *)pco_in, pco_in->length));
 }
 
-/* construct an IPCP PCO from up to two given DNS addreses */
-static int build_ipcp_pco(struct msgb *msg, uint8_t id, const struct in46_addr *dns1,
-			  const struct in46_addr *dns2)
+static void process_pco_element_ipcp(const struct pco_element *pco_elem, struct msgb *resp,
+				     const struct apn_ctx *apn, struct pdp_t *pdp)
 {
+	struct ippoolm_t *peer_v4 = pdp_get_peer_ipv(pdp, false);
+	const struct in46_addr *dns1 = &apn->v4.cfg.dns[0];
+	const struct in46_addr *dns2 = &apn->v4.cfg.dns[1];
+	uint8_t *start = resp->tail;
+	const struct ipcp_hdr *ipcp;
+	uint16_t ipcp_len;
 	uint8_t *len1, *len2;
-	uint8_t *start = msg->tail;
 	unsigned int len_appended;
+	ptrdiff_t consumed;
+	size_t remain;
+
+	if (!peer_v4) {
+		LOGPPDP(LOGL_ERROR, pdp, "IPCP but no IPv4 type ?!?\n");
+		return;
+	}
+
+	ipcp = (const struct ipcp_hdr *)pco_elem->data;
+	consumed = (pco_elem->data - &pdp->pco_req.v[0]);
+	remain = sizeof(pdp->pco_req.v) - consumed;
+	ipcp_len = osmo_load16be(&ipcp->len);
+	if (remain < 0 || remain < ipcp_len) {
+		LOGPPDP(LOGL_ERROR, pdp, "Malformed IPCP, ignoring\n");
+		return;
+	}
 
 	/* Three byte T16L header */
-	msgb_put_u16(msg, 0x8021);	/* IPCP */
-	len1 = msgb_put(msg, 1);	/* Length of contents: delay */
+	msgb_put_u16(resp, 0x8021);	/* IPCP */
+	len1 = msgb_put(resp, 1);	/* Length of contents: delay */
 
-	msgb_put_u8(msg, 0x02);		/* ACK */
-	msgb_put_u8(msg, id);		/* ID: Needs to match request */
-	msgb_put_u8(msg, 0x00);		/* Length MSB */
-	len2 = msgb_put(msg, 1);	/* Length LSB: delay */
+	msgb_put_u8(resp, 0x02);	/* ACK */
+	msgb_put_u8(resp, ipcp->id);	/* ID: Needs to match request */
+	msgb_put_u8(resp, 0x00);	/* Length MSB */
+	len2 = msgb_put(resp, 1);	/* Length LSB: delay */
 
-	if (dns1 && dns1->len == 4) {
-		msgb_put_u8(msg, 0x81);		/* DNS1 Tag */
-		msgb_put_u8(msg, 2 + dns1->len);/* DNS1 Length, incl. TL */
-		msgb_put_u32(msg, dns1->v4.s_addr);
+	if (dns1->len == 4 && ipcp_contains_option(ipcp, ipcp_len, IPCP_OPT_PRIMARY_DNS, 4)) {
+		msgb_put_u8(resp, 0x81);		/* DNS1 Tag */
+		msgb_put_u8(resp, 2 + dns1->len);	/* DNS1 Length, incl. TL */
+		msgb_put_u32(resp, ntohl(dns1->v4.s_addr));
 	}
 
-	if (dns2 && dns2->len == 4) {
-		msgb_put_u8(msg, 0x83);		/* DNS2 Tag */
-		msgb_put_u8(msg, 2 + dns2->len);/* DNS2 Length, incl. TL */
-		msgb_put_u32(msg, dns2->v4.s_addr);
+	if (dns2->len == 4 && ipcp_contains_option(ipcp, ipcp_len, IPCP_OPT_SECONDARY_DNS, 4)) {
+		msgb_put_u8(resp, 0x83);		/* DNS2 Tag */
+		msgb_put_u8(resp, 2 + dns2->len);	/* DNS2 Length, incl. TL */
+		msgb_put_u32(resp, ntohl(dns2->v4.s_addr));
 	}
 
 	/* patch in length values */
-	len_appended = msg->tail - start;
+	len_appended = resp->tail - start;
 	*len1 = len_appended - 3;
 	*len2 = len_appended - 3;
+}
 
-	return 0;
+static void process_pco_element_dns_ipv6(const struct pco_element *pco_elem, struct msgb *resp,
+					 const struct apn_ctx *apn, struct pdp_t *pdp)
+{
+	unsigned int i;
+	const uint8_t *tail = resp->tail;
+
+	for (i = 0; i < ARRAY_SIZE(apn->v6.cfg.dns); i++) {
+		const struct in46_addr *i46a = &apn->v6.cfg.dns[i];
+		if (i46a->len != 16)
+			continue;
+		msgb_t16lv_put(resp, PCO_P_DNS_IPv6_ADDR, i46a->len, i46a->v6.s6_addr);
+	}
+	if (resp->tail == tail)
+		LOGPPDP(LOGL_NOTICE, pdp, "MS requested IPv6 DNS, but APN has none configured\n");
+}
+
+static void process_pco_element_dns_ipv4(const struct pco_element *pco_elem, struct msgb *resp,
+					 const struct apn_ctx *apn, struct pdp_t *pdp)
+{
+	unsigned int i;
+	const uint8_t *tail = resp->tail;
+
+	for (i = 0; i < ARRAY_SIZE(apn->v4.cfg.dns); i++) {
+		const struct in46_addr *i46a = &apn->v4.cfg.dns[i];
+		if (i46a->len != 4)
+			continue;
+		msgb_t16lv_put(resp, PCO_P_DNS_IPv4_ADDR, i46a->len, (uint8_t *)&i46a->v4);
+	}
+	if (resp->tail == tail)
+		LOGPPDP(LOGL_NOTICE, pdp, "MS requested IPv4 DNS, but APN has none configured\n");
+}
+
+static void process_pco_element(const struct pco_element *pco_elem, struct msgb *resp,
+				const struct apn_ctx *apn, struct pdp_t *pdp)
+{
+	uint16_t protocol_id = osmo_load16be(&pco_elem->protocol_id);
+
+	LOGPPDP(LOGL_DEBUG, pdp, "PCO Protocol 0x%04x\n", protocol_id);
+	switch (protocol_id) {
+	case PCO_P_PAP:
+		process_pco_element_pap(pco_elem, resp, apn, pdp);
+		break;
+	case PCO_P_IPCP:
+		process_pco_element_ipcp(pco_elem, resp, apn, pdp);
+		break;
+	case PCO_P_DNS_IPv6_ADDR:
+		process_pco_element_dns_ipv6(pco_elem, resp, apn, pdp);
+		break;
+	case PCO_P_DNS_IPv4_ADDR:
+		process_pco_element_dns_ipv4(pco_elem, resp, apn, pdp);
+		break;
+	default:
+		LOGPPDP(LOGL_INFO, pdp, "Unknown/Unimplemented PCO Protocol 0x%04x: %s\n",
+			protocol_id, osmo_hexdump_nospc(pco_elem->data, pco_elem->length));
+		break;
+	}
 }
 
 /* process one PCO request from a MS/UE, putting together the proper responses */
-static void process_pco(struct apn_ctx *apn, struct pdp_t *pdp)
+static void process_pco(const struct apn_ctx *apn, struct pdp_t *pdp)
 {
-	struct msgb *msg = msgb_alloc(256, "PCO");
-	unsigned int i;
+	struct msgb *resp = msgb_alloc(256, "PCO.resp");
+	const struct ul255_t *pco = &pdp->pco_req;
+	const struct pco_element *pco_elem;
+	const uint8_t *cur;
 
-	OSMO_ASSERT(msg);
-	msgb_put_u8(msg, 0x80); /* ext-bit + configuration protocol byte */
+	/* build the header of the PCO response */
+	OSMO_ASSERT(resp);
+	msgb_put_u8(resp, 0x80); /* ext-bit + configuration protocol byte */
 
-	/* FIXME: also check if primary / secondary DNS was requested */
-	if (pdp_has_v4(pdp) && pco_contains_proto(&pdp->pco_req, PCO_P_IPCP)) {
-		/* FIXME: properly implement this for IPCP */
-		build_ipcp_pco(msg, 0, &apn->v4.cfg.dns[0], &apn->v4.cfg.dns[1]);
+	/* iterate over the PCO elements in the request; call process_pco_element() for each */
+	for (cur = pco->v + 1, pco_elem = (const struct pco_element *) cur;
+	     cur + sizeof(struct pco_element) <= pco->v + pco->l;
+	     cur += pco_elem->length + sizeof(*pco_elem), pco_elem = (const struct pco_element *) cur) {
+		process_pco_element(pco_elem, resp, apn, pdp);
 	}
 
-	if (pco_contains_proto(&pdp->pco_req, PCO_P_DNS_IPv6_ADDR)) {
-		for (i = 0; i < ARRAY_SIZE(apn->v6.cfg.dns); i++) {
-			struct in46_addr *i46a = &apn->v6.cfg.dns[i];
-			if (i46a->len != 16)
-				continue;
-			msgb_t16lv_put(msg, PCO_P_DNS_IPv6_ADDR, i46a->len, i46a->v6.s6_addr);
-		}
-	}
-
-	if (pco_contains_proto(&pdp->pco_req, PCO_P_DNS_IPv4_ADDR)) {
-		for (i = 0; i < ARRAY_SIZE(apn->v4.cfg.dns); i++) {
-			struct in46_addr *i46a = &apn->v4.cfg.dns[i];
-			if (i46a->len != 4)
-				continue;
-			msgb_t16lv_put(msg, PCO_P_DNS_IPv4_ADDR, i46a->len, (uint8_t *)&i46a->v4);
-		}
-	}
-
-	if (msgb_length(msg) > 1) {
-		memcpy(pdp->pco_neg.v, msgb_data(msg), msgb_length(msg));
-		pdp->pco_neg.l = msgb_length(msg);
+	/* copy the PCO response msgb and copy its contents over to the PDP context */
+	if (msgb_length(resp) > 1) {
+		memcpy(pdp->pco_neg.v, msgb_data(resp), msgb_length(resp));
+		pdp->pco_neg.l = msgb_length(resp);
 	} else
 		pdp->pco_neg.l = 0;
-
-	msgb_free(msg);
+	msgb_free(resp);
 }
 
 static bool apn_supports_ipv4(const struct apn_ctx *apn)
@@ -514,16 +741,19 @@ int create_context_ind(struct pdp_t *pdp)
 	static char name_buf[256];
 	struct gsn_t *gsn = pdp->gsn;
 	struct ggsn_ctx *ggsn = gsn->priv;
-	struct in46_addr addr;
-	struct ippoolm_t *member;
-	struct apn_ctx *apn;
-	int rc;
+	struct in46_addr addr[2];
+	struct ippoolm_t *member = NULL, *addrv4 = NULL, *addrv6 = NULL;
+	char straddrv4[INET_ADDRSTRLEN], straddrv6[INET6_ADDRSTRLEN];
+	struct apn_ctx *apn = NULL;
+	int rc, num_addr, i;
+	char *apn_name;
 
-	osmo_apn_to_str(name_buf, pdp->apn_req.v, pdp->apn_req.l);
-
-	LOGPPDP(LOGL_DEBUG, pdp, "Processing create PDP context request for APN '%s'\n", name_buf);
+	apn_name = osmo_apn_to_str(name_buf, pdp->apn_req.v, pdp->apn_req.l);
+	LOGPPDP(LOGL_DEBUG, pdp, "Processing create PDP context request for APN '%s'\n",
+		apn_name ? name_buf : "(NONE)");
 
 	/* First find an exact APN name match */
+	if (apn_name != NULL)
 		apn = ggsn_find_apn(ggsn, name_buf);
 	/* ignore if the APN has not been started */
 	if (apn && !apn->started)
@@ -552,56 +782,75 @@ int create_context_ind(struct pdp_t *pdp)
 	memcpy(pdp->qos_neg.v, pdp->qos_req.v, pdp->qos_req.l);	/* TODO */
 	pdp->qos_neg.l = pdp->qos_req.l;
 
-	if (in46a_from_eua(&pdp->eua, &addr)) {
+	memset(addr, 0, sizeof(addr));
+	if ((num_addr = in46a_from_eua(&pdp->eua, addr)) < 0) {
 		LOGPPDP(LOGL_ERROR, pdp, "Cannot decode EUA from MS/SGSN: %s\n",
 			osmo_hexdump(pdp->eua.v, pdp->eua.l));
 		gtp_create_context_resp(gsn, pdp, GTPCAUSE_UNKNOWN_PDP);
 		return 0;
 	}
 
-	if (addr.len == sizeof(struct in_addr)) {
+	/* Store the actual APN for logging and the VTY */
+	rc = osmo_apn_from_str(pdp->apn_use.v, sizeof(pdp->apn_use.v), apn->cfg.name);
+	if (rc < 0) /* Unlikely this would happen, but anyway... */
+		LOGPPDP(LOGL_ERROR, pdp, "Failed to store APN '%s'\n", apn->cfg.name);
+	pdp->apn_use.l = rc;
+
+	/* Allocate dynamic addresses from the pool */
+	for (i = 0; i < num_addr; i++) {
+		if (addr[i].len == sizeof(struct in_addr)) {
 			/* does this APN actually have an IPv4 pool? */
 			if (!apn_supports_ipv4(apn))
 				goto err_wrong_af;
 
-		rc = ippool_newip(apn->v4.pool, &member, &addr, 0);
+			rc = ippool_newip(apn->v4.pool, &member, &addr[i], 0);
 			if (rc < 0)
 				goto err_pool_full;
-		in46a_to_eua(&member->addr, &pdp->eua);
+			/* copy back */
+			memcpy(&addr[i].v4.s_addr, &member->addr.v4, 4);
 
+			addrv4 = member;
+
+		} else if (addr[i].len == sizeof(struct in6_addr)) {
+
+			/* does this APN actually have an IPv6 pool? */
+			if (!apn_supports_ipv6(apn))
+				goto err_wrong_af;
+
+			rc = ippool_newip(apn->v6.pool, &member, &addr[i], 0);
+			if (rc < 0)
+				goto err_pool_full;
+
+			/* IPv6 doesn't really send the real/allocated address at this point, but just
+			 * the link-identifier which the MS shall use for router solicitation */
+			/* initialize upper 64 bits to prefix, they are discarded by MS anyway */
+			memcpy(addr[i].v6.s6_addr, &member->addr.v6, 8);
+			/* use allocated 64bit prefix as lower 64bit, used as link id by MS */
+			memcpy(addr[i].v6.s6_addr+8, &member->addr.v6, 8);
+
+			addrv6 = member;
+		} else
+			OSMO_ASSERT(0);
+
+		pdp->peer[i] = member;
+		member->peer = pdp;
+	}
+
+	in46a_to_eua(addr, num_addr, &pdp->eua);
+
+	if (apn->cfg.gtpu_mode == APN_GTPU_MODE_KERNEL_GTP && apn_supports_ipv4(apn)) {
 		/* TODO: In IPv6, EUA doesn't contain the actual IP addr/prefix! */
 		if (gtp_kernel_tunnel_add(pdp, apn->tun.cfg.dev_name) < 0) {
 			LOGPPDP(LOGL_ERROR, pdp, "Cannot add tunnel to kernel: %s\n", strerror(errno));
 			gtp_create_context_resp(gsn, pdp, GTPCAUSE_SYS_FAIL);
 			return 0;
 		}
-	} else if (addr.len == sizeof(struct in6_addr)) {
-		struct in46_addr tmp;
+	}
 
-		/* does this APN actually have an IPv6 pool? */
-		if (!apn_supports_ipv6(apn))
-			goto err_wrong_af;
-
-		rc = ippool_newip(apn->v6.pool, &member, &addr, 0);
-		if (rc < 0)
-			goto err_pool_full;
-
-		/* IPv6 doesn't really send the real/allocated address at this point, but just
-		 * the link-identifier which the MS shall use for router solicitation */
-		tmp.len = addr.len;
-		/* initialize upper 64 bits to prefix, they are discarded by MS anyway */
-		memcpy(tmp.v6.s6_addr, &member->addr.v6, 8);
-		/* use allocated 64bit prefix as lower 64bit, used as link id by MS */
-		memcpy(tmp.v6.s6_addr+8, &member->addr.v6, 8);
-		in46a_to_eua(&tmp, &pdp->eua);
-	} else
-		OSMO_ASSERT(0);
-
-	pdp->peer = member;
 	pdp->ipif = apn->tun.tun;	/* TODO */
 	pdp->priv = apn;
-	member->peer = pdp;
 
+	/* TODO: change trap to send 2 IPs */
 	if (!send_trap(gsn, pdp, member, "imsi-ass-ip")) { /* TRAP with IP assignment */
 		gtp_create_context_resp(gsn, pdp, GTPCAUSE_NO_RESOURCES);
 		return 0;
@@ -612,8 +861,10 @@ int create_context_ind(struct pdp_t *pdp)
 	/* Transmit G-PDU sequence numbers (only) if configured in APN */
 	pdp->tx_gpdu_seq = apn->cfg.tx_gpdu_seq;
 
-	LOGPPDP(LOGL_INFO, pdp, "Successful PDP Context Creation: APN=%s(%s), TEIC=%u, IP=%s\n",
-		name_buf, apn->cfg.name, pdp->teic_own, in46a_ntoa(&member->addr));
+	LOGPPDP(LOGL_INFO, pdp, "Successful PDP Context Creation: APN=%s(%s), TEIC=%u, IPv4=%s, IPv6=%s\n",
+		name_buf, apn->cfg.name, pdp->teic_own,
+		addrv4 ? inet_ntop(AF_INET, &addrv4->addr.v4, straddrv4, sizeof(straddrv4)) : "none",
+		addrv6 ? inet_ntop(AF_INET6, &addrv6->addr.v6, straddrv6, sizeof(straddrv6)) : "none");
 	gtp_create_context_resp(gsn, pdp, GTPCAUSE_ACC_REQ);
 	return 0;		/* Success */
 
@@ -637,23 +888,31 @@ static int cb_tun_ind(struct tun_t *tun, void *pack, unsigned len)
 	struct iphdr *iph = (struct iphdr *)pack;
 	struct ip6_hdr *ip6h = (struct ip6_hdr *)pack;
 	struct ippool_t *pool;
+	char straddr[INET6_ADDRSTRLEN];
+	uint8_t pref_offset;
 
-	if (iph->version == 4) {
+	switch (iph->version) {
+	case 4:
 		if (len < sizeof(*iph) || len < 4*iph->ihl)
 			return -1;
 		dst.len = 4;
 		dst.v4.s_addr = iph->daddr;
 		pool = apn->v4.pool;
-	} else if (iph->version == 6) {
+		break;
+	case 6:
 		/* Due to the fact that 3GPP requires an allocation of a
 		 * /64 prefix to each MS, we must instruct
 		 * ippool_getip() below to match only the leading /64
-		 * prefix, i.e. the first 8 bytes of the address */
+		 * prefix, i.e. the first 8 bytes of the address. If the ll addr
+		 * is used, then the match should be done on the trailing 64
+		 * bits. */
 		dst.len = 8;
-		dst.v6 = ip6h->ip6_dst;
+		pref_offset = IN6_IS_ADDR_LINKLOCAL(&ip6h->ip6_dst) ? 8 : 0;
+		memcpy(&dst.v6, ((uint8_t*)&ip6h->ip6_dst) + pref_offset, 8);
 		pool = apn->v6.pool;
-	} else {
-		LOGP(DTUN, LOGL_NOTICE, "non-IPv packet received from tun\n");
+		break;
+	default:
+		LOGP(DTUN, LOGL_NOTICE, "non-IPv%u packet received from tun\n", iph->version);
 		return -1;
 	}
 
@@ -661,12 +920,15 @@ static int cb_tun_ind(struct tun_t *tun, void *pack, unsigned len)
 	if (!pool)
 		return 0;
 
-	DEBUGP(DTUN, "Received packet from tun!\n");
+	DEBUGP(DTUN, "Received packet for APN(%s) from tun %s", apn->cfg.name, tun->devname);
 
 	if (ippool_getip(pool, &ipm, &dst)) {
-		DEBUGP(DTUN, "Received packet with no PDP contex!!\n");
+		DEBUGPC(DTUN, " with no PDP contex! (%s)\n", iph->version == 4 ?
+			inet_ntop(AF_INET, &iph->saddr, straddr, sizeof(straddr)) :
+			inet_ntop(AF_INET6, &ip6h->ip6_src, straddr, sizeof(straddr)));
 		return 0;
 	}
+	DEBUGPC(DTUN, "\n");
 
 	if (ipm->peer)		/* Check if a peer protocol is defined */
 		gtp_data_req(apn->ggsn->gsn, (struct pdp_t *)ipm->peer, pack, len);
@@ -685,19 +947,53 @@ static int encaps_tun(struct pdp_t *pdp, void *pack, unsigned len)
 	struct ip6_hdr *ip6h = (struct ip6_hdr *)pack;
 	struct tun_t *tun = (struct tun_t *)pdp->ipif;
 	struct apn_ctx *apn = tun->priv;
+	char straddr[INET6_ADDRSTRLEN];
+	struct ippoolm_t *peer;
+	uint8_t pref_offset;
 
 	OSMO_ASSERT(tun);
 	OSMO_ASSERT(apn);
 
-	LOGPPDP(LOGL_DEBUG, pdp, "Packet received: forwarding to tun\n");
+	LOGPPDP(LOGL_DEBUG, pdp, "Packet received on APN(%s): forwarding to tun %s\n", apn->cfg.name, tun->devname);
 
 	switch (iph->version) {
 	case 6:
+		peer = pdp_get_peer_ipv(pdp, true);
+		if (!peer) {
+			LOGPPDP(LOGL_ERROR, pdp, "Packet from MS IPv6 with unassigned EUA: %s\n",
+				osmo_hexdump(pack, len));
+			return -1;
+		}
+
+		/* Validate packet comes from IPaddr assigned to the pdp ctx.
+		   If packet is a LL addr, then EUA is in the lower 64 bits,
+		   otherwise it's used as the 64 prefix */
+		pref_offset = IN6_IS_ADDR_LINKLOCAL(&ip6h->ip6_src) ? 8 : 0;
+		if (memcmp(((uint8_t*)&ip6h->ip6_src) + pref_offset, &peer->addr.v6, 8)) {
+			LOGPPDP(LOGL_ERROR, pdp, "Packet from MS using unassigned src IPv6: %s\n",
+				inet_ntop(AF_INET6, &ip6h->ip6_src, straddr, sizeof(straddr)));
+			return -1;
+		}
+
 		/* daddr: all-routers multicast addr */
 		if (IN6_ARE_ADDR_EQUAL(&ip6h->ip6_dst, &all_router_mcast_addr))
-			return handle_router_mcast(pdp->gsn, pdp, &apn->v6_lladdr, pack, len);
+			return handle_router_mcast(pdp->gsn, pdp, &peer->addr.v6,
+						&apn->v6_lladdr, pack, len);
 		break;
 	case 4:
+		peer = pdp_get_peer_ipv(pdp, false);
+		if (!peer) {
+			LOGPPDP(LOGL_ERROR, pdp, "Packet from MS IPv4 with unassigned EUA: %s\n",
+				osmo_hexdump(pack, len));
+			return -1;
+		}
+
+		/* Validate packet comes from IPaddr assigned to the pdp ctx */
+		if (memcmp(&iph->saddr, &peer->addr.v4, sizeof(peer->addr.v4))) {
+			LOGPPDP(LOGL_ERROR, pdp, "Packet from MS using unassigned src IPv4: %s\n",
+				inet_ntop(AF_INET, &iph->saddr, straddr, sizeof(straddr)));
+			return -1;
+		}
 		break;
 	default:
 		LOGPPDP(LOGL_ERROR, pdp, "Packet from MS is neither IPv4 nor IPv6: %s\n",
@@ -789,6 +1085,32 @@ static void signal_handler(int s)
 	}
 }
 
+/* libgtp callback for confirmations */
+static int cb_conf(int type, int cause, struct pdp_t *pdp, void *cbp)
+{
+	int rc = 0;
+
+	if (cause == EOF)
+		LOGP(DGGSN, LOGL_NOTICE, "libgtp EOF (type=%u, pdp=%p, cbp=%p)\n",
+			type, pdp, cbp);
+
+	switch (type) {
+	case GTP_DELETE_PDP_REQ:
+		/* Remark: We actually never reach this path nowadays because
+		   only place where we call gtp_delete_context_req2() is during
+		   apn_stop()->pool_close_all_pdp() path, and in that case we
+		   free all pdp contexts immediatelly without waiting for
+		   confirmation since we want to tear down the whole APN
+		   anyways. As a result, DeleteCtxResponse will never reach here
+		   since it will be dropped at some point in lower layers in the
+		   Rx path. This code is nevertheless left here in order to ease
+		   future developent and avoid possible future memleaks once more
+		   scenarios where GGSN sends a DeleteCtxRequest are introduced. */
+		   if (pdp)
+			rc = pdp_freepdp(pdp);
+	}
+	return rc;
+}
 
 /* Start a given GGSN */
 int ggsn_start(struct ggsn_ctx *ggsn)
@@ -831,10 +1153,12 @@ int ggsn_start(struct ggsn_ctx *ggsn)
 
 	/* Start GTP re-transmission timer */
 	osmo_timer_setup(&ggsn->gtp_timer, ggsn_gtp_tmr_cb, ggsn);
+	ggsn_gtp_tmr_start(ggsn);
 
 	gtp_set_cb_data_ind(ggsn->gsn, encaps_tun);
 	gtp_set_cb_delete_context(ggsn->gsn, delete_context);
 	gtp_set_cb_create_context_ind(ggsn->gsn, create_context_ind);
+	gtp_set_cb_conf(ggsn->gsn, cb_conf);
 
 	LOGPGGSN(LOGL_NOTICE, ggsn, "Successfully started\n");
 	ggsn->started = true;
@@ -855,7 +1179,7 @@ int ggsn_stop(struct ggsn_ctx *ggsn)
 
 	/* iterate over all APNs and stop them */
 	llist_for_each_entry(apn, &ggsn->apn_list, list)
-		apn_stop(apn, true);
+		apn_stop(apn);
 
 	osmo_timer_del(&ggsn->gtp_timer);
 
@@ -929,6 +1253,7 @@ int main(int argc, char **argv)
 
 	tall_ggsn_ctx = talloc_named_const(NULL, 0, "OsmoGGSN");
 	msgb_talloc_ctx_init(tall_ggsn_ctx, 0);
+	g_vty_info.tall_ctx = tall_ggsn_ctx;
 
 	/* Handle keyboard interrupt SIGINT */
 	signal(SIGINT, &signal_handler);
@@ -938,12 +1263,13 @@ int main(int argc, char **argv)
 	signal(SIGUSR2, &signal_handler);
 
 	osmo_init_ignore_signals();
-	osmo_init_logging(&log_info);
+	osmo_init_logging2(tall_ggsn_ctx, &log_info);
 	osmo_stats_init(tall_ggsn_ctx);
 
 	vty_init(&g_vty_info);
-	logging_vty_add_cmds(NULL);
-	osmo_stats_vty_add_cmds(&log_info);
+	logging_vty_add_cmds();
+	osmo_talloc_vty_add_cmds();
+	osmo_stats_vty_add_cmds();
 	ggsn_vty_init();
 	ctrl_vty_init(tall_ggsn_ctx);
 
@@ -961,7 +1287,8 @@ int main(int argc, char **argv)
 	if (rc < 0)
 		exit(1);
 
-	g_ctrlh = ctrl_interface_setup(NULL, OSMO_CTRL_PORT_GGSN, NULL);
+	g_ctrlh = ctrl_interface_setup_dynip(NULL, ctrl_vty_get_bind_addr(),
+					     OSMO_CTRL_PORT_GGSN, NULL);
 	if (!g_ctrlh) {
 		LOGP(DGGSN, LOGL_ERROR, "Failed to create CTRL interface.\n");
 		exit(1);
@@ -991,5 +1318,5 @@ int main(int argc, char **argv)
 	llist_for_each_entry(ggsn, &g_ggsn_list, list)
 		ggsn_stop(ggsn);
 
-	return 1;
+	return 0;
 }

ggsn/ggsn.h

@@ -22,6 +22,7 @@ struct ggsn_ctx;
 struct apn_ctx_ip {
 	struct {
 		struct in46_prefix ifconfig_prefix;
+		struct in46_prefix ll_prefix;
 		struct in46_prefix static_prefix;
 		struct in46_prefix dynamic_prefix;
 		/* v4 DNS server names */
@@ -139,4 +140,4 @@ extern void *tall_ggsn_ctx;
 extern int ggsn_start(struct ggsn_ctx *ggsn);
 extern int ggsn_stop(struct ggsn_ctx *ggsn);
 extern int apn_start(struct apn_ctx *apn);
-extern int apn_stop(struct apn_ctx *apn, bool force);
+extern int apn_stop(struct apn_ctx *apn);

ggsn/ggsn_vty.c

@@ -26,6 +26,8 @@
 #include <osmocom/core/talloc.h>
 #include <osmocom/core/utils.h>
 #include <osmocom/core/rate_ctr.h>
+#include <osmocom/gsm/apn.h>
+#include <osmocom/gsm/gsm48_ie.h>
 #include <osmocom/gsm/protocol/gsm_04_08_gprs.h>
 
 #include <osmocom/vty/command.h>
@@ -513,6 +515,24 @@ DEFUN(cfg_apn_no_ipv6_ifconfig, cfg_apn_no_ipv6_ifconfig_cmd,
 	return CMD_SUCCESS;
 }
 
+DEFUN(cfg_apn_ipv6_linklocal, cfg_apn_ipv6_linklocal_cmd,
+	"ipv6 link-local X:X::X:X/M",
+	IP6_STR IFCONFIG_STR "IPv6 Link-local Adress/Prefix-Length\n")
+{
+	struct apn_ctx *apn = (struct apn_ctx *) vty->index;
+	str2prefix(&apn->v6.cfg.ll_prefix, argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_apn_no_ipv6_linklocal, cfg_apn_no_ipv6_linklocal_cmd,
+	"no ipv6 link-local",
+	NO_STR IP6_STR IFCONFIG_STR)
+{
+	struct apn_ctx *apn = (struct apn_ctx *) vty->index;
+	memset(&apn->v6.cfg.ll_prefix, 0, sizeof(apn->v6.cfg.ll_prefix));
+	return CMD_SUCCESS;
+}
+
 #define DNS_STRINGS "Configure DNS Server\n" "primary/secondary DNS\n" "IP address of DNS Sever\n"
 
 DEFUN(cfg_apn_ip_dns, cfg_apn_ip_dns_cmd,
@@ -584,7 +604,7 @@ DEFUN(cfg_apn_shutdown, cfg_apn_shutdown_cmd,
 	struct apn_ctx *apn = (struct apn_ctx *) vty->index;
 
 	if (!apn->cfg.shutdown) {
-		if (apn_stop(apn, false)) {
+		if (apn_stop(apn)) {
 			vty_out(vty, "%% Failed to Stop APN%s", VTY_NEWLINE);
 			return CMD_WARNING;
 		}
@@ -634,9 +654,9 @@ static void config_write_apn(struct vty *vty, struct apn_ctx *apn)
 		vty_out(vty, "  ipdown-script %s%s", apn->tun.cfg.ipdown_script, VTY_NEWLINE);
 
 	for (i = 0; i < 32; i++) {
-		if (!(apn->cfg.apn_type_mask & (1 << i)))
+		if (!(apn->cfg.apn_type_mask & (UINT32_C(1) << i)))
 			continue;
-		vty_out(vty, "  type-support %s%s", get_value_string(pdp_type_names, (1 << i)),
+		vty_out(vty, "  type-support %s%s", get_value_string(pdp_type_names, (UINT32_C(1) << i)),
 			VTY_NEWLINE);
 	}
 
@@ -668,6 +688,8 @@ static void config_write_apn(struct vty *vty, struct apn_ctx *apn)
 	}
 	if (apn->v6.cfg.ifconfig_prefix.addr.len)
 		vty_dump_prefix(vty, "  ipv6 ifconfig", &apn->v6.cfg.ifconfig_prefix);
+	if (apn->v6.cfg.ll_prefix.addr.len)
+		vty_dump_prefix(vty, "  ipv6 link-local", &apn->v6.cfg.ll_prefix);
 
 	/* must be last */
 	vty_out(vty, "  %sshutdown%s", apn->cfg.shutdown ? "" : "no ", VTY_NEWLINE);
@@ -713,9 +735,16 @@ static const char *print_gsnaddr(const struct ul16_t *in)
 static void show_one_pdp(struct vty *vty, struct pdp_t *pdp)
 {
 	struct in46_addr eua46;
+	char name_buf[256];
+	char *apn_name;
+	int rc;
+
+	/* Attempt to decode MSISDN */
+	rc = gsm48_decode_bcd_number2(name_buf, sizeof(name_buf),
+				      pdp->msisdn.v, pdp->msisdn.l, 0);
 
 	vty_out(vty, "IMSI: %s, NSAPI: %u, MSISDN: %s%s", imsi_gtp2str(&pdp->imsi), pdp->nsapi,
-		osmo_hexdump_nospc(pdp->msisdn.v, pdp->msisdn.l), VTY_NEWLINE);
+		rc ? "(NONE)" : name_buf, VTY_NEWLINE);
 
 	vty_out(vty, " Control: %s:%08x ", print_gsnaddr(&pdp->gsnlc), pdp->teic_own);
 	vty_out(vty, "<-> %s:%08x%s", print_gsnaddr(&pdp->gsnrc), pdp->teic_gn, VTY_NEWLINE);
@@ -723,6 +752,11 @@ static void show_one_pdp(struct vty *vty, struct pdp_t *pdp)
 	vty_out(vty, " Data: %s:%08x ", print_gsnaddr(&pdp->gsnlu), pdp->teid_own);
 	vty_out(vty, "<-> %s:%08x%s", print_gsnaddr(&pdp->gsnru), pdp->teid_gn, VTY_NEWLINE);
 
+	apn_name = osmo_apn_to_str(name_buf, pdp->apn_req.v, pdp->apn_req.l);
+	vty_out(vty, " APN requested: %s%s", apn_name ? name_buf : "(NONE)", VTY_NEWLINE);
+	apn_name = osmo_apn_to_str(name_buf, pdp->apn_use.v, pdp->apn_use.l);
+	vty_out(vty, " APN in use: %s%s", apn_name ? name_buf : "(NONE)", VTY_NEWLINE);
+
 	in46a_from_eua(&pdp->eua, &eua46);
 	vty_out(vty, " End-User Address: %s%s", in46a_ntoa(&eua46), VTY_NEWLINE);
 	vty_out(vty, " Transmit GTP Sequence Number for G-PDU: %s%s",
@@ -730,25 +764,35 @@ static void show_one_pdp(struct vty *vty, struct pdp_t *pdp)
 }
 
 DEFUN(show_pdpctx_imsi, show_pdpctx_imsi_cmd,
-	"show pdp-context imsi IMSI [<0-15>]",
+	"show pdp-context ggsn NAME imsi IMSI [<0-15>]",
 	SHOW_STR "Display information on PDP Context\n"
+	GGSN_STR "GGSN Name\n"
 	"PDP contexts for given IMSI\n"
 	"PDP context for given NSAPI\n")
 {
-	uint64_t imsi = strtoull(argv[0], NULL, 10);
+	struct ggsn_ctx *ggsn;
+	uint64_t imsi;
 	unsigned int nsapi;
 	struct pdp_t *pdp;
 	int num_found = 0;
 
-	if (argc > 1) {
-		nsapi = atoi(argv[1]);
-		if (pdp_getimsi(&pdp, imsi, nsapi)) {
+	ggsn = ggsn_find(argv[0]);
+	if (!ggsn) {
+		vty_out(vty, "%% No such GGSN '%s'%s", argv[0], VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	imsi = strtoull(argv[1], NULL, 10);
+
+	if (argc > 2) {
+		nsapi = atoi(argv[2]);
+		if (gtp_pdp_getimsi(ggsn->gsn, &pdp, imsi, nsapi)) {
 			show_one_pdp(vty, pdp);
 			num_found++;
 		}
 	} else {
 		for (nsapi = 0; nsapi < PDP_MAXNSAPI; nsapi++) {
-			if (pdp_getimsi(&pdp, imsi, nsapi))
+			if (gtp_pdp_getimsi(ggsn->gsn, &pdp, imsi, nsapi))
 				continue;
 			show_one_pdp(vty, pdp);
 			num_found++;
@@ -761,6 +805,47 @@ DEFUN(show_pdpctx_imsi, show_pdpctx_imsi_cmd,
 		return CMD_SUCCESS;
 }
 
+DEFUN(show_pdpctx_ip, show_pdpctx_ip_cmd,
+	"show pdp-context ggsn NAME ipv4 A.B.C.D",
+	SHOW_STR "Display information on PDP Context\n"
+	GGSN_STR "GGSN Name\n" "IPv4 address type\n" "IP address\n")
+{
+	struct ggsn_ctx *ggsn;
+	struct apn_ctx *apn;
+	unsigned int i;
+
+	ggsn = ggsn_find(argv[0]);
+	if (!ggsn) {
+		vty_out(vty, "%% No such GGSN '%s'%s", argv[0], VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	/* Iterate over all APNs of a given GGSN */
+	llist_for_each_entry(apn, &ggsn->apn_list, list) {
+		struct ippool_t *pool = apn->v4.pool;
+
+		/* In some rare cases, if GGSN fails to init TUN/TAP interfaces
+		 * (e.g. due to insufficient permissions), it will continue to
+		 * work in such broken state, and pool would be NULL. */
+		if (!pool)
+			continue;
+
+		/* Iterate over all IPv4 pool members */
+		for (i = 0; i < pool->listsize; i++) {
+			struct ippoolm_t *member = &pool->member[i];
+			if (member->inuse == 0)
+				continue;
+			if (strcmp(argv[1], in46a_ntoa(&member->addr)) == 0) {
+				show_one_pdp(vty, member->peer);
+				return CMD_SUCCESS;
+			}
+		}
+	}
+
+	vty_out(vty, "%% No PDP context found for IP '%s'%s", argv[1], VTY_NEWLINE);
+	return CMD_WARNING;
+}
+
 /* show all (active) PDP contexts within a pool */
 static void ippool_show_pdp_contexts(struct vty *vty, struct ippool_t *pool)
 {
@@ -785,9 +870,9 @@ static void apn_show_pdp_contexts(struct vty *vty, struct apn_ctx *apn)
 }
 
 DEFUN(show_pdpctx, show_pdpctx_cmd,
-	"show pdp-context ggsn NAME [apn APN]",
+	"show pdp-context ggsn NAME",
 	SHOW_STR "Show PDP Context Information\n"
-	GGSN_STR "GGSN Name\n") // FIXME
+	GGSN_STR "GGSN Name\n")
 {
 	struct ggsn_ctx *ggsn;
 	struct apn_ctx *apn;
@@ -797,21 +882,45 @@ DEFUN(show_pdpctx, show_pdpctx_cmd,
 		vty_out(vty, "%% No such GGSN '%s'%s", argv[0], VTY_NEWLINE);
 		return CMD_WARNING;
 	}
-	if (argc < 2) {
+
 	llist_for_each_entry(apn, &ggsn->apn_list, list)
 		apn_show_pdp_contexts(vty, apn);
-	} else {
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(show_pdpctx_apn, show_pdpctx_apn_cmd,
+	"show pdp-context ggsn NAME apn APN",
+	SHOW_STR "Show PDP Context Information\n"
+	GGSN_STR "GGSN Name\n" "Filter by APN\n" "APN name\n")
+{
+	struct ggsn_ctx *ggsn;
+	struct apn_ctx *apn;
+
+	ggsn = ggsn_find(argv[0]);
+	if (!ggsn) {
+		vty_out(vty, "%% No such GGSN '%s'%s", argv[0], VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
 	apn = ggsn_find_apn(ggsn, argv[1]);
 	if (!apn) {
 		vty_out(vty, "%% No such APN '%s'%s", argv[1], VTY_NEWLINE);
 		return CMD_WARNING;
 	}
-		apn_show_pdp_contexts(vty, apn);
-	}
 
+	apn_show_pdp_contexts(vty, apn);
 	return CMD_SUCCESS;
 }
 
+/* Backwards compatibility: the VTY parser is (mis)interpreting
+ * "[apn APN]" as two separate elements: "[apn" and "APN]",
+ * but the first part somehow turns into command "ap". */
+ALIAS_DEPRECATED(show_pdpctx_apn, show_deprecated_pdpctx_apn_cmd,
+		 "show pdp-context ggsn NAME ap APN",
+		 SHOW_STR "Show PDP Context Information\n"
+		 GGSN_STR "GGSN Name\n" "Filter by APN\n" "APN name\n");
+
 static void show_apn(struct vty *vty, struct apn_ctx *apn)
 {
 	vty_out(vty, " APN: %s%s", apn->cfg.name, VTY_NEWLINE);
@@ -851,7 +960,10 @@ DEFUN(show_ggsn, show_ggsn_cmd,
 int ggsn_vty_init(void)
 {
 	install_element_ve(&show_pdpctx_cmd);
+	install_element_ve(&show_pdpctx_apn_cmd);
+	install_element_ve(&show_deprecated_pdpctx_apn_cmd);
 	install_element_ve(&show_pdpctx_imsi_cmd);
+	install_element_ve(&show_pdpctx_ip_cmd);
 	install_element_ve(&show_ggsn_cmd);
 
 	install_element(CONFIG_NODE, &cfg_ggsn_cmd);
@@ -893,6 +1005,8 @@ int ggsn_vty_init(void)
 	install_element(APN_NODE, &cfg_apn_no_ip_ifconfig_cmd);
 	install_element(APN_NODE, &cfg_apn_ipv6_ifconfig_cmd);
 	install_element(APN_NODE, &cfg_apn_no_ipv6_ifconfig_cmd);
+	install_element(APN_NODE, &cfg_apn_ipv6_linklocal_cmd);
+	install_element(APN_NODE, &cfg_apn_no_ipv6_linklocal_cmd);
 	install_element(APN_NODE, &cfg_apn_gpdu_seq_cmd);
 	install_element(APN_NODE, &cfg_apn_no_gpdu_seq_cmd);
 
@@ -926,6 +1040,10 @@ static int ggsn_vty_go_parent(struct vty *vty)
 			vty->index_sub = &apn->ggsn->cfg.description;
 		}
 		break;
+	default:
+		vty->node = CONFIG_NODE;
+		vty->index = NULL;
+		vty->index_sub = NULL;
 	}
 
 	return vty->node;

ggsn/icmpv6.c

@@ -180,17 +180,15 @@ static bool icmpv6_validate_router_solicit(const uint8_t *pack, unsigned len)
 }
 
 /* handle incoming packets to the all-routers multicast address */
-int handle_router_mcast(struct gsn_t *gsn, struct pdp_t *pdp, const struct in6_addr *own_ll_addr,
+int handle_router_mcast(struct gsn_t *gsn, struct pdp_t *pdp,
+			const struct in6_addr *pdp_prefix,
+			const struct in6_addr *own_ll_addr,
 			const uint8_t *pack, unsigned len)
 {
-	struct ippoolm_t *member = pdp->peer;
 	const struct ip6_hdr *ip6h = (struct ip6_hdr *)pack;
 	const struct icmpv6_hdr *ic6h = (struct icmpv6_hdr *) (pack + sizeof(*ip6h));
 	struct msgb *msg;
 
-	OSMO_ASSERT(pdp);
-	OSMO_ASSERT(member);
-
 	if (len < sizeof(*ip6h)) {
 		LOGP(DICMP6, LOGL_NOTICE, "Packet too short: %u bytes\n", len);
 		return -1;
@@ -221,7 +219,7 @@ int handle_router_mcast(struct gsn_t *gsn, struct pdp_t *pdp, const struct in6_a
 		/* Send router advertisement from GGSN link-local
 		 * address to MS link-local address, including prefix
 		 * allocated to this PDP context */
-		msg = icmpv6_construct_ra(own_ll_addr, &ip6h->ip6_src, &member->addr.v6);
+		msg = icmpv6_construct_ra(own_ll_addr, &ip6h->ip6_src, pdp_prefix);
 		/* Send the constructed RA to the MS */
 		gtp_data_req(gsn, pdp, msgb_data(msg), msgb_length(msg));
 		msgb_free(msg);

ggsn/icmpv6.h

@@ -3,5 +3,7 @@
 #include "../gtp/gtp.h"
 #include "../gtp/pdp.h"
 
-int handle_router_mcast(struct gsn_t *gsn, struct pdp_t *pdp, const struct in6_addr *own_ll_addr,
+int handle_router_mcast(struct gsn_t *gsn, struct pdp_t *pdp,
+			const struct in6_addr *pdp_prefix,
+			const struct in6_addr *own_ll_addr,
 			const uint8_t *pack, unsigned len);

gtp/Makefile.am

@@ -1,7 +1,9 @@
 # This is _NOT_ the library release version, it's an API version.
 # Please read chapter "Library interface versions" of the libtool documentation
 # before making any modifications: https://www.gnu.org/software/libtool/manual/html_node/Versioning.html
-LIBVERSION=2:0:0
+# If major=current-age is increased, remember to update the dh_strip line in debian/rules!
+LIBVERSION=5:0:0
+
 lib_LTLIBRARIES = libgtp.la
 
 include_HEADERS = gtp.h pdp.h gtpie.h
@@ -11,7 +13,3 @@ AM_CFLAGS = -O2 -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' -ggdb $(LIBOSMOCORE_
 libgtp_la_SOURCES = gtp.c gtp.h gtpie.c gtpie.h pdp.c pdp.h lookupa.c lookupa.h queue.c queue.h
 libgtp_la_LDFLAGS = -version-info $(LIBVERSION) -no-undefined
 libgtp_la_LIBADD = $(LIBOSMOCORE_LIBS)
-
-
-
-

gtp/gtp.h

@@ -12,6 +12,11 @@
 #ifndef _GTP_H
 #define _GTP_H
 
+#include <osmocom/core/utils.h>
+#include <osmocom/core/defs.h>
+
+#include "pdp.h"
+
 #define GTP_MODE_GGSN 1
 #define GTP_MODE_SGSN 2
 
@@ -85,6 +90,10 @@
 /* 242-254 For future use. */
 #define GTP_GPDU            255	/* G-PDU */
 
+extern const struct value_string gtp_type_names[];
+static inline const char *gtp_type_name(uint8_t val)
+{ return get_value_string(gtp_type_names, val); }
+
 /* GTP information element cause codes from 29.060 v3.9.0 7.7 */
 /*                                                            */
 #define GTPCAUSE_REQ_IMSI                   0	/* Request IMSI */
@@ -256,6 +265,9 @@ struct gsn_t {
 	struct queue_t *queue_req;	/* Request queue */
 	struct queue_t *queue_resp;	/* Response queue */
 
+	struct pdp_t pdpa[PDP_MAX];	/* PDP storage */
+	struct pdp_t *hashtid[PDP_MAX];	/* Hash table for IMSI + NSAPI */
+
 	/* Call back functions */
 	int (*cb_delete_context) (struct pdp_t *);
 	int (*cb_create_context_ind) (struct pdp_t *);
@@ -264,6 +276,7 @@ struct gsn_t {
 	int (*cb_conf) (int type, int cause, struct pdp_t * pdp, void *cbp);
 	int (*cb_data_ind) (struct pdp_t * pdp, void *pack, unsigned len);
 	int (*cb_recovery) (struct sockaddr_in * peer, uint8_t recovery);
+	int (*cb_recovery2) (struct sockaddr_in * peer, struct pdp_t * pdp, uint8_t recovery);
 
 	/* Counters */
 
@@ -299,8 +312,9 @@ extern int gtp_new(struct gsn_t **gsn, char *statedir, struct in_addr *listen,
 extern int gtp_free(struct gsn_t *gsn);
 
 extern int gtp_newpdp(struct gsn_t *gsn, struct pdp_t **pdp,
-		      uint64_t imsi, uint8_t nsapi);
+		      uint64_t imsi, uint8_t nsapi) OSMO_DEPRECATED("Use gtp_pdp_newpdp() instead");
 extern int gtp_freepdp(struct gsn_t *gsn, struct pdp_t *pdp);
+extern int gtp_freepdp_teardown(struct gsn_t *gsn, struct pdp_t *pdp);
 
 extern int gtp_create_context_req(struct gsn_t *gsn, struct pdp_t *pdp,
 				  void *cbp);
@@ -317,6 +331,9 @@ extern int gtp_update_context(struct gsn_t *gsn, struct pdp_t *pdp,
 			      void *cbp, struct in_addr *inetaddr);
 
 extern int gtp_delete_context_req(struct gsn_t *gsn, struct pdp_t *pdp,
+				  void *cbp, int teardown)
+		OSMO_DEPRECATED("Use gtp_delete_context_req2() instead, to avoid freeing pdp ctx before reply");
+extern int gtp_delete_context_req2(struct gsn_t *gsn, struct pdp_t *pdp,
 				   void *cbp, int teardown);
 
 extern int gtp_data_req(struct gsn_t *gsn, struct pdp_t *pdp,
@@ -351,8 +368,15 @@ extern int gtp_set_cb_conf(struct gsn_t *gsn,
 
 int gtp_set_cb_recovery(struct gsn_t *gsn,
 			int (*cb) (struct sockaddr_in * peer,
+				   uint8_t recovery))
+	OSMO_DEPRECATED("Use gtp_set_cb_recovery2() instead, to obtain pdp ctx originating the recovery");
+int gtp_set_cb_recovery2(struct gsn_t *gsn,
+			int (*cb) (struct sockaddr_in * peer,
+				   struct pdp_t * pdp,
 				   uint8_t recovery));
 
+void gtp_clear_queues(struct gsn_t *gsn);
+
 /* Internal functions (not part of the API */
 
 extern int gtp_echo_req(struct gsn_t *gsn, int version, void *cbp,

gtp/pdp.c

@@ -32,14 +32,6 @@
 #include "gtp.h"
 #include "lookupa.h"
 
-/* ***********************************************************
- * Global variables TODO: most should be moved to gsn_t
- *************************************************************/
-
-static struct pdp_t pdpa[PDP_MAX];	/* PDP storage */
-static struct pdp_t *hashtid[PDP_MAX];	/* Hash table for IMSI + NSAPI */
-/* struct pdp_t* haship[PDP_MAX];  Hash table for IP and network interface */
-
 /* ***********************************************************
  * Functions related to PDP storage
  *
@@ -112,11 +104,16 @@ static struct pdp_t *hashtid[PDP_MAX];	/* Hash table for IMSI + NSAPI */
  *
  *************************************************************/
 
-int pdp_init()
+static struct gsn_t *g_gsn;
+
+int pdp_init(struct gsn_t *gsn)
 {
-	memset(&pdpa, 0, sizeof(pdpa));
-	memset(&hashtid, 0, sizeof(hashtid));
-	/*  memset(&haship, 0, sizeof(haship)); */
+	if(!g_gsn) {
+		g_gsn = gsn;
+	} else {
+		LOGP(DLGTP, LOGL_FATAL, "This interface is depreacted and doesn't support multiple GGSN!");
+		return -1;
+	}
 
 	return 0;
 }
@@ -124,6 +121,13 @@ int pdp_init()
 int pdp_newpdp(struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi,
 	       struct pdp_t *pdp_old)
 {
+	return gtp_pdp_newpdp(g_gsn, pdp, imsi, nsapi, pdp_old);
+}
+
+int gtp_pdp_newpdp(struct gsn_t *gsn, struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi,
+	       struct pdp_t *pdp_old)
+{
+	struct pdp_t *pdpa = gsn->pdpa;
 	int n;
 	for (n = 0; n < PDP_MAX; n++) {	/* TODO: Need to do better than linear search */
 		if (pdpa[n].inuse == 0) {
@@ -133,6 +137,7 @@ int pdp_newpdp(struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi,
 			else
 				memset(*pdp, 0, sizeof(struct pdp_t));
 			(*pdp)->inuse = 1;
+			(*pdp)->gsn = gsn;
 			(*pdp)->imsi = imsi;
 			(*pdp)->nsapi = nsapi;
 			(*pdp)->fllc = (uint16_t) n + 1;
@@ -160,6 +165,8 @@ int pdp_newpdp(struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi,
 
 int pdp_freepdp(struct pdp_t *pdp)
 {
+	struct pdp_t *pdpa = pdp->gsn->pdpa;
+
 	pdp_tiddel(pdp);
 
 	/* Remove any references in primary context */
@@ -174,12 +181,20 @@ int pdp_freepdp(struct pdp_t *pdp)
 
 int pdp_getpdp(struct pdp_t **pdp)
 {
-	*pdp = &pdpa[0];
+	*pdp = &g_gsn->pdpa[0];
 	return 0;
 }
 
 int pdp_getgtp0(struct pdp_t **pdp, uint16_t fl)
 {
+	return gtp_pdp_getgtp0(g_gsn, pdp, fl);
+}
+
+
+int gtp_pdp_getgtp0(struct gsn_t *gsn, struct pdp_t **pdp, uint16_t fl)
+{
+	struct pdp_t *pdpa = gsn->pdpa;
+
 	if ((fl > PDP_MAX) || (fl < 1)) {
 		return EOF;	/* Not found */
 	} else {
@@ -194,6 +209,13 @@ int pdp_getgtp0(struct pdp_t **pdp, uint16_t fl)
 
 int pdp_getgtp1(struct pdp_t **pdp, uint32_t tei)
 {
+	return gtp_pdp_getgtp1(g_gsn, pdp, tei);
+}
+
+int gtp_pdp_getgtp1(struct gsn_t *gsn, struct pdp_t **pdp, uint32_t tei)
+{
+	struct pdp_t *pdpa = gsn->pdpa;
+
 	if ((tei > PDP_MAX) || (tei < 1)) {
 		return EOF;	/* Not found */
 	} else {
@@ -209,6 +231,12 @@ int pdp_getgtp1(struct pdp_t **pdp, uint32_t tei)
 /* get a PDP based on the *peer* address + TEI-Data.  Used for matching inbound Error Ind */
 int pdp_getgtp1_peer_d(struct pdp_t **pdp, const struct sockaddr_in *peer, uint32_t teid_gn)
 {
+	return gtp_pdp_getgtp1_peer_d(g_gsn, pdp, peer, teid_gn);
+}
+
+int gtp_pdp_getgtp1_peer_d(struct gsn_t *gsn, struct pdp_t **pdp, const struct sockaddr_in *peer, uint32_t teid_gn)
+{
+	struct pdp_t *pdpa = gsn->pdpa;
 	unsigned int i;
 
 	/* this is O(n) but we don't have (nor want) another hash... */
@@ -231,6 +259,7 @@ int pdp_tidhash(uint64_t tid)
 
 int pdp_tidset(struct pdp_t *pdp, uint64_t tid)
 {
+	struct pdp_t **hashtid = pdp->gsn->hashtid;
 	int hash = pdp_tidhash(tid);
 	struct pdp_t *pdp2;
 	struct pdp_t *pdp_prev = NULL;
@@ -249,6 +278,7 @@ int pdp_tidset(struct pdp_t *pdp, uint64_t tid)
 
 int pdp_tiddel(struct pdp_t *pdp)
 {
+	struct pdp_t **hashtid = pdp->gsn->hashtid;
 	int hash = pdp_tidhash(pdp->tid);
 	struct pdp_t *pdp2;
 	struct pdp_t *pdp_prev = NULL;
@@ -270,6 +300,12 @@ int pdp_tiddel(struct pdp_t *pdp)
 
 int pdp_tidget(struct pdp_t **pdp, uint64_t tid)
 {
+	return gtp_pdp_tidget(g_gsn, pdp, tid);
+}
+
+int gtp_pdp_tidget(struct gsn_t *gsn, struct pdp_t **pdp, uint64_t tid)
+{
+	struct pdp_t **hashtid = gsn->hashtid;
 	int hash = pdp_tidhash(tid);
 	struct pdp_t *pdp2;
 	DEBUGP(DLGTP, "Begin pdp_tidget tid = %"PRIx64"\n", tid);
@@ -286,102 +322,19 @@ int pdp_tidget(struct pdp_t **pdp, uint64_t tid)
 
 int pdp_getimsi(struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi)
 {
-	return pdp_tidget(pdp,
+	return gtp_pdp_getimsi(g_gsn, pdp, imsi, nsapi);
+}
+
+int gtp_pdp_getimsi(struct gsn_t *gsn, struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi)
+{
+	return gtp_pdp_tidget(gsn, pdp,
 			  (imsi & 0x0fffffffffffffffull) +
 			  ((uint64_t) nsapi << 60));
 }
 
-/*
-int pdp_iphash(void* ipif, struct ul66_t *eua) {
-  /#printf("IPhash %ld\n", lookup(eua->v, eua->l, ipif) % PDP_MAX);#/
-  return (lookup(eua->v, eua->l, ipif) % PDP_MAX);
-}
 
-int pdp_ipset(struct pdp_t *pdp, void* ipif, struct ul66_t *eua) {
-  int hash;
-  struct pdp_t *pdp2;
-  struct pdp_t *pdp_prev = NULL;
-
-  if (PDP_DEBUG) printf("Begin pdp_ipset %d %d %2x%2x%2x%2x\n",
-			(unsigned) ipif, eua->l,
-			eua->v[2], eua->v[3], 
-			eua->v[4], eua->v[5]);
-
-  pdp->ipnext = NULL;
-  pdp->ipif = ipif;
-  pdp->eua.l = eua->l;
-  memcpy(pdp->eua.v, eua->v, eua->l);
-
-  hash = pdp_iphash(pdp->ipif, &pdp->eua);
-
-  for (pdp2 = haship[hash]; pdp2; pdp2 = pdp2->ipnext)
-    pdp_prev = pdp2;
-  if (!pdp_prev) 
-    haship[hash] = pdp;
-  else 
-    pdp_prev->ipnext = pdp;
-  if (PDP_DEBUG) printf("End pdp_ipset\n");
-  return 0;
-}
-
-int pdp_ipdel(struct pdp_t *pdp) {
-  int hash = pdp_iphash(pdp->ipif, &pdp->eua);
-  struct pdp_t *pdp2;
-  struct pdp_t *pdp_prev = NULL;
-  if (PDP_DEBUG) printf("Begin pdp_ipdel\n");
-  for (pdp2 = haship[hash]; pdp2; pdp2 = pdp2->ipnext) {
-    if (pdp2 == pdp) {
-      if (!pdp_prev) 
-	haship[hash] = pdp2->ipnext;
-      else 
-	pdp_prev->ipnext = pdp2->ipnext;
-      if (PDP_DEBUG) printf("End pdp_ipdel: PDP found\n");
-      return 0;
-    }
-    pdp_prev = pdp2;
-  }
-  if (PDP_DEBUG) printf("End pdp_ipdel: PDP not found\n");
-  return EOF; /# End of linked list and not found #/
-}
-
-int pdp_ipget(struct pdp_t **pdp, void* ipif, struct ul66_t *eua) {
-  int hash = pdp_iphash(ipif, eua);
-  struct pdp_t *pdp2;
-  /#printf("Begin pdp_ipget %d %d %2x%2x%2x%2x\n", (unsigned)ipif, eua->l, 
-    eua->v[2],eua->v[3],eua->v[4],eua->v[5]);#/
-  for (pdp2 = haship[hash]; pdp2; pdp2 = pdp2->ipnext) {
-    if ((pdp2->ipif == ipif) && (pdp2->eua.l == eua->l) && 
-	(memcmp(&pdp2->eua.v, &eua->v, eua->l) == 0)) {
-      *pdp = pdp2;
-      /#printf("End pdp_ipget. Found\n");#/
-      return 0;
-    }
-  }
-  if (PDP_DEBUG) printf("End pdp_ipget Notfound %d %d %2x%2x%2x%2x\n", 
-	 (unsigned)ipif, eua->l, eua->v[2],eua->v[3],eua->v[4],eua->v[5]);
-  return EOF; /# End of linked list and not found #/
-}
-*/
 /* Various conversion functions */
 
-int pdp_ntoeua(struct in_addr *src, struct ul66_t *eua)
-{
-	eua->l = 6;
-	eua->v[0] = PDP_EUA_ORG_IETF;
-	eua->v[1] = PDP_EUA_TYPE_v4;
-	memcpy(&eua->v[2], src, 4);	/* Copy a 4 byte address */
-	return 0;
-}
-
-int pdp_euaton(struct ul66_t *eua, struct in_addr *dst)
-{
-	if ((eua->l != 6) || (eua->v[0] != PDP_EUA_ORG_IETF) || (eua->v[1] != PDP_EUA_TYPE_v4)) {
-		return EOF;
-	}
-	memcpy(dst, &eua->v[2], 4);	/* Copy a 4 byte address */
-	return 0;
-}
-
 uint64_t pdp_gettid(uint64_t imsi, uint8_t nsapi)
 {
 	return (imsi & 0x0fffffffffffffffull) + ((uint64_t) nsapi << 60);
@@ -392,3 +345,17 @@ void pdp_set_imsi_nsapi(struct pdp_t *pdp, uint64_t teid)
 	pdp->imsi = teid & 0x0fffffffffffffffull;
 	pdp->nsapi = (teid & 0xf000000000000000ull) >> 60;
 }
+
+/* Count amount of secondary PDP contexts linked to this primary PDP context
+ * (itself included). Must be called on a primary PDP context. */
+unsigned int pdp_count_secondary(struct pdp_t *pdp)
+{
+	unsigned int n;
+	unsigned int count = 0;
+	OSMO_ASSERT(!pdp->secondary);
+
+	for (n = 0; n < PDP_MAXNSAPI; n++)
+		if (pdp->secondary_tei[n])
+			count++;
+	return count;
+}

gtp/pdp.h

@@ -14,6 +14,9 @@
 #define _PDP_H
 
 #include <stdbool.h>
+#include <netinet/in.h>
+
+#include <osmocom/core/defs.h>
 
 struct gsn_t;
 
@@ -26,6 +29,7 @@ struct gsn_t;
 #define PDP_EUA_ORG_IETF	0xF1
 #define PDP_EUA_TYPE_v4		0x21
 #define PDP_EUA_TYPE_v6		0x57
+#define PDP_EUA_TYPE_v4v6	0x8D
 
 /* GTP Information elements from 29.060 v3.9.0 7.7 Information Elements */
 /* Also covers version 0. Note that version 0 6: QOS Profile was superceded *
@@ -121,7 +125,7 @@ struct pdp_t {
 	/* Parameters shared by all PDP context belonging to the same MS */
 
 	void *ipif;		/* IP network interface */
-	void *peer;		/* Pointer to peer protocol */
+	void *peer[2];		/* Pointer to peer protocol */
 	void *asap;		/* Application specific service access point */
 
 	uint64_t imsi;		/* International Mobile Subscriber Identity. */
@@ -234,40 +238,40 @@ struct pdp_t {
 	/* to be used by libgtp callers/users (to attach their own private state) */
 	void *priv;
 
-	struct gsn_t *gsn;
+	struct gsn_t *gsn; /* Back pointer to GSN where this pdp ctx belongs to */
 
 	bool tx_gpdu_seq;		/* Transmit (true) or suppress G-PDU sequence numbers */
 };
 
 /* functions related to pdp_t management */
-int pdp_init();
-int pdp_newpdp(struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi,
-	       struct pdp_t *pdp_old);
+int gtp_pdp_newpdp(struct gsn_t *gsn, struct pdp_t **pdp, uint64_t imsi,
+		   uint8_t nsapi, struct pdp_t *pdp_old);
 int pdp_freepdp(struct pdp_t *pdp);
-int pdp_getpdp(struct pdp_t **pdp);
-
-int pdp_getgtp0(struct pdp_t **pdp, uint16_t fl);
-int pdp_getgtp1(struct pdp_t **pdp, uint32_t tei);
-int pdp_getgtp1_peer_d(struct pdp_t **pdp, const struct sockaddr_in *peer, uint32_t teid_gn);
-
-int pdp_getimsi(struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi);
+int gtp_pdp_getgtp0(struct gsn_t *gsn, struct pdp_t **pdp, uint16_t fl);
+int gtp_pdp_getgtp1(struct gsn_t *gsn, struct pdp_t **pdp, uint32_t tei);
+int gtp_pdp_getgtp1_peer_d(struct gsn_t *gsn, struct pdp_t **pdp, const struct sockaddr_in *peer, uint32_t teid_gn);
+int gtp_pdp_getimsi(struct gsn_t *gsn, struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi);
+int gtp_pdp_tidget(struct gsn_t *gsn, struct pdp_t **pdp, uint64_t tid);
 
 int pdp_tidhash(uint64_t tid);
 int pdp_tidset(struct pdp_t *pdp, uint64_t tid);
 int pdp_tiddel(struct pdp_t *pdp);
-int pdp_tidget(struct pdp_t **pdp, uint64_t tid);
 
+uint64_t pdp_gettid(uint64_t imsi, uint8_t nsapi);
 void pdp_set_imsi_nsapi(struct pdp_t *pdp, uint64_t teid);
 
-/*
-int pdp_iphash(void* ipif, struct ul66_t *eua);
-int pdp_ipset(struct pdp_t *pdp, void* ipif, struct ul66_t *eua);
-int pdp_ipdel(struct pdp_t *pdp);
-int pdp_ipget(struct pdp_t **pdp, void* ipif, struct ul66_t *eua);
-*/
+unsigned int pdp_count_secondary(struct pdp_t *pdp);
+
+/* Deprecated APIs (support for only 1 GSN per process). Must be used only after first call to gtp_new() and until it is freed. */
+int pdp_init(struct gsn_t *gsn); /* Use only allowed inside libgtp to keep compatiblity with deprecated APIs defined here. */
+int pdp_newpdp(struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi,
+	       struct pdp_t *pdp_old) OSMO_DEPRECATED("Use gtp_pdp_newpdp() instead");
+int pdp_getpdp(struct pdp_t **pdp) OSMO_DEPRECATED("Use gsn_t->pdpa field instead");
+int pdp_getgtp0(struct pdp_t **pdp, uint16_t fl) OSMO_DEPRECATED("Use gtp_pdp_getgtp0() instead");
+int pdp_getgtp1(struct pdp_t **pdp, uint32_t tei) OSMO_DEPRECATED("Use gtp_pdp_getgtp1() instead");
+int pdp_getgtp1_peer_d(struct pdp_t **pdp, const struct sockaddr_in *peer, uint32_t teid_gn) OSMO_DEPRECATED("Use gtp_pdp_getgtp1_peer_d() instead");
+int pdp_getimsi(struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi) OSMO_DEPRECATED("Use gtp_pdp_getimsi() instead");
+int pdp_tidget(struct pdp_t **pdp, uint64_t tid) OSMO_DEPRECATED("Use gtp_pdp_tidget() instead");
 
-int pdp_ntoeua(struct in_addr *src, struct ul66_t *eua);
-int pdp_euaton(struct ul66_t *eua, struct in_addr *dst);
-uint64_t pdp_gettid(uint64_t imsi, uint8_t nsapi);
 
 #endif /* !_PDP_H */

gtp/queue.c

@@ -62,7 +62,7 @@ static int queue_seqhash(struct sockaddr_in *peer, uint16_t seq)
 	return seq % QUEUE_HASH_SIZE;
 }
 
-/*! \brief Insert a message with given sequence number into the hash
+/*! \brief Insert a message with given sequence number into the hash.
  *
  * This function sets the peer and the seq of the qmsg and then inserts
  * the qmsg into the queue hash.  To do so, it does a hashtable lookup
@@ -79,7 +79,7 @@ static int queue_seqset(struct queue_t *queue, struct qmsg_t *qmsg,
 	if (QUEUE_DEBUG)
 		printf("Begin queue_seqset seq = %d\n", (int)seq);
 	if (QUEUE_DEBUG)
-		printf("SIZEOF PEER %d, *PEER %d\n", sizeof(peer),
+		printf("SIZEOF PEER %zu, *PEER %zu\n", sizeof(peer),
 		       sizeof(*peer));
 
 	qmsg->seq = seq;
@@ -121,7 +121,10 @@ static int queue_seqdel(struct queue_t *queue, struct qmsg_t *qmsg)
 	return EOF;		/* End of linked list and not found */
 }
 
-/*! \brief Allocates and initialises new queue structure */
+/*! Allocates and initialises new queue structure.
+ *  \param[out] queue pointer where to store the allocated object. Must be freed with queue_free
+ *  \returns zero on success, non-zero on error
+ */
 int queue_new(struct queue_t **queue)
 {
 	if (QUEUE_DEBUG)
@@ -138,7 +141,10 @@ int queue_new(struct queue_t **queue)
 	return 0;
 }
 
-/*! \brief Deallocates queue structure */
+/*! Deallocates queue structure.
+ *  \param[in] queue pointer previously allocated by queue_new
+ *  \returns zero on success, non-zero on error.
+ */
 int queue_free(struct queue_t *queue)
 {
 	if (QUEUE_DEBUG)
@@ -149,7 +155,13 @@ int queue_free(struct queue_t *queue)
 	return 0;
 }
 
-/*! \brief Add a new message to the queue */
+/*! Add a new message to the queue.
+ *  \param[in] queue pointer previously allocated by queue_new
+ *  \param[out] qmsg first message from the queue (if succeeds)
+ *  \param[in] peer who sent the message to add
+ *  \param[in] seq sequence number of the message to add
+ *  \returns zero on success, non-zero on error.
+ */
 int queue_newmsg(struct queue_t *queue, struct qmsg_t **qmsg,
 		 struct sockaddr_in *peer, uint16_t seq)
 {
@@ -176,7 +188,11 @@ int queue_newmsg(struct queue_t *queue, struct qmsg_t **qmsg,
 	}
 }
 
-/*! \brief Simply remoev a given qmsg_t from the queue
+
+/*! Remove an element from the queue.
+ *  \param[in] queue pointer previously allocated by queue_new
+ *  \param[in] qmsg message to free
+ *  \returns zero on success, non-zero on error.
  *
  * Internally, we first delete the entry from the queue, and then update
  * up our global queue->first / queue->last pointers.  Finally,
@@ -210,7 +226,11 @@ int queue_freemsg(struct queue_t *queue, struct qmsg_t *qmsg)
 	return 0;
 }
 
-/*! \brief Move a given qmsg_t to the end of the queue ?!? */
+/*! Move a given qmsg_t to the end of the queue.
+ *  \param[in] queue pointer previously allocated by queue_new
+ *  \param[in] qmsg message to move to the end of the queue
+ *  \returns zero on success, non-zero on error.
+ */
 int queue_back(struct queue_t *queue, struct qmsg_t *qmsg)
 {
 	if (QUEUE_DEBUG)
@@ -236,7 +256,11 @@ int queue_back(struct queue_t *queue, struct qmsg_t *qmsg)
 	return 0;
 }
 
-/*! \brief Get the first element in the entire queue */
+/*! Get the first element in the entire queue.
+ *  \param[in] queue pointer previously allocated by queue_new
+ *  \param[out] qmsg first message from the queue (if succeeds)
+ *  \returns zero on success, non-zero on error.
+ */
 int queue_getfirst(struct queue_t *queue, struct qmsg_t **qmsg)
 {
 	/*printf("queue_getfirst\n"); */
@@ -250,7 +274,13 @@ int queue_getfirst(struct queue_t *queue, struct qmsg_t **qmsg)
 	return 0;
 }
 
-/*! \brief Get a queue entry for a given peer + seq */
+/*! Get a queue entry for a given peer + seq.
+ *  \param[in] queue pointer previously allocated by queue_new
+ *  \param[out] qmsg first message from the queue (if succeeds)
+ *  \param[in] peer who sent the message to retrieve
+ *  \param[in] seq sequence number of the message to retrive
+ *  \returns zero on success, non-zero on error.
+ */
 int queue_seqget(struct queue_t *queue, struct qmsg_t **qmsg,
 		 struct sockaddr_in *peer, uint16_t seq)
 {
@@ -272,7 +302,14 @@ int queue_seqget(struct queue_t *queue, struct qmsg_t **qmsg,
 	return EOF;		/* End of linked list and not found */
 }
 
-/*! \brief look-up a given seq/peer, return cbp + type and free entry */
+/*! look-up a given seq/peer, return cbp + type and free entry.
+ *  \param[in] queue pointer previously allocated by queue_new
+ *  \param[in] peer who sent the message to retrieve
+ *  \param[in] seq sequence number of the message to retrive
+ *  \param[out] type GTP message type
+ *  \param[out] type callback pointer of the message
+ *  \returns zero on success, non-zero on error.
+ */
 int queue_freemsg_seq(struct queue_t *queue, struct sockaddr_in *peer,
 		      uint16_t seq, uint8_t * type, void **cbp)
 {

gtp/queue.h

@@ -17,6 +17,8 @@
 #ifndef _QUEUE_H
 #define _QUEUE_H
 
+#include "gtp.h"
+
 #define QUEUE_DEBUG 0		/* Print debug information */
 
 #define QUEUE_SIZE 1024		/* Size of retransmission queue */

lib/Makefile.am

@@ -1,7 +1,12 @@
 noinst_LIBRARIES = libmisc.a
 
-noinst_HEADERS = gnugetopt.h ippool.h lookup.h syserr.h tun.h in46_addr.h
+noinst_HEADERS = gnugetopt.h ippool.h lookup.h syserr.h tun.h in46_addr.h netdev.h gtp-kernel.h
 
 AM_CFLAGS = -O2 -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' -ggdb $(LIBOSMOCORE_CFLAGS)
 
-libmisc_a_SOURCES = getopt1.c getopt.c ippool.c lookup.c tun.c debug.c in46_addr.c
+libmisc_a_SOURCES = getopt1.c getopt.c ippool.c lookup.c tun.c debug.c in46_addr.c netdev.c
+
+if ENABLE_GTP_KERNEL
+AM_CFLAGS += -DGTP_KERNEL $(LIBGTPNL_CFLAGS)
+libmisc_a_SOURCES += gtp-kernel.c
+endif

lib/gtp-kernel.c

@@ -77,56 +77,20 @@ static int gtp_kernel_init_once(void)
 	return 0;
 }
 
-int gtp_kernel_init(struct gsn_t *gsn, const char *devname, struct in46_prefix *prefix, const char *ipup)
+int gtp_kernel_create(int dest_ns, const char *devname, int fd0, int fd1u)
 {
-	struct in_addr net;
-	const char *net_arg;
-
-	if (!gtp_nl.nl)
-		gtp_kernel_init_once();
-
-	if (prefix->addr.len != 4) {
-		LOGP(DGGSN, LOGL_ERROR, "we only support IPv4 in this path :/");
+	if (gtp_kernel_init_once() < 0)
 		return -1;
-	}
-	net = prefix->addr.v4;
 
-	if (gtp_dev_create(-1, devname, gsn->fd0, gsn->fd1u) < 0) {
-		LOGP(DGGSN, LOGL_ERROR, "cannot create GTP tunnel device: %s\n",
-			strerror(errno));
+	return gtp_dev_create(dest_ns, devname, fd0, fd1u);
+}
+
+int gtp_kernel_create_sgsn(int dest_ns, const char *devname, int fd0, int fd1u)
+{
+	if (gtp_kernel_init_once() < 0)
 		return -1;
-	}
 
-	net_arg = in46p_ntoa(prefix);
-
-	DEBUGP(DGGSN, "Setting route to reach %s via %s\n", net_arg, devname);
-
-	if (gtp_dev_config(devname, &net, prefix->prefixlen) < 0) {
-		LOGP(DGGSN, LOGL_ERROR, "Cannot add route to reach network %s\n", net_arg);
-	}
-
-	/* launch script if it is set to bring up the route to reach
-	 * the MS, eg. ip ro add 10.0.0.0/8 dev gtp0. Better add this
-	 * using native rtnetlink interface given that we know the
-	 * MS network mask, later.
-	 */
-	if (ipup) {
-		char cmd[1024];
-		int err;
-
-		/* eg. /home/ggsn/ipup gtp0 10.0.0.0/8 */
-		snprintf(cmd, sizeof(cmd), "%s %s %s", ipup, devname, net_arg);
-		cmd[sizeof(cmd)-1] = '\0';
-
-		err = system(cmd);
-		if (err < 0) {
-			LOGP(DGGSN, LOGL_ERROR, "Failed to launch script `%s'\n", ipup);
-			return -1;
-		}
-	}
-	LOGP(DGGSN, LOGL_NOTICE, "GTP kernel configured\n");
-
-	return 0;
+	return gtp_dev_create_sgsn(dest_ns, devname, fd0, fd1u);
 }
 
 void gtp_kernel_stop(const char *devname)

lib/gtp-kernel.h

@@ -7,18 +7,20 @@ extern int debug;
 extern char *ipup;
 
 #ifdef GTP_KERNEL
-int gtp_kernel_init(struct gsn_t *gsn, const char *devname, struct in46_prefix *prefix, const char *ipup);
+int gtp_kernel_create(int dest_ns, const char *devname, int fd0, int fd1u);
+int gtp_kernel_create_sgsn(int dest_ns, const char *devname, int fd0, int fd1u);
 void gtp_kernel_stop(const char *devname);
 
 int gtp_kernel_tunnel_add(struct pdp_t *pdp, const char *devname);
 int gtp_kernel_tunnel_del(struct pdp_t *pdp, const char *devname);
 
 #else
-static inline int gtp_kernel_init(struct gsn_t *gsn, const char *devname, struct in46_prefix *prefix, const char *ipup)
+static inline int gtp_kernel_create(int dest_ns, const char *devname, int fd0, int fd1u)
 {
 	SYS_ERR(DGGSN, LOGL_ERROR, 0, "ggsn compiled without GTP kernel support!\n");
 	return -1;
 }
+#define gtp_kernel_create_sgsn gtp_kernel_create
 
 static inline void gtp_kernel_stop(const char *devname) {}
 

lib/in46_addr.c

@@ -253,10 +253,17 @@ unsigned int in46a_netmasklen(const struct in46_addr *netmask)
 	}
 }
 
-/*! Convert given PDP End User Address to in46_addr
- *  \returns 0 on success; negative on error */
-int in46a_to_eua(const struct in46_addr *src, struct ul66_t *eua)
+/*! Convert given array of in46_addr to PDP End User Address
+ *  \param[in] src Array containing 1 or 2 in46_addr
+ *  \param[out] eua End User Address structure to fill
+ *  \returns 0 on success; negative on error
+ *
+ * In case size is 2, this function expects to find exactly one IPv4 and one
+ * IPv6 addresses in src. */
+int in46a_to_eua(const struct in46_addr *src, unsigned int size, struct ul66_t *eua)
 {
+	const struct in46_addr *src_v4, *src_v6;
+	if (size == 1) {
 		switch (src->len) {
 		case 4:
 			eua->l = 6;
@@ -275,11 +282,37 @@ int in46a_to_eua(const struct in46_addr *src, struct ul66_t *eua)
 			OSMO_ASSERT(0);
 			return -1;
 		}
+		return 0;
+	}
+
+	if (src[0].len == src[1].len)
+		return -1; /* we should have a v4 and a v6 address */
+
+	src_v4 = (src[0].len == 4) ? &src[0] : &src[1];
+	src_v6 = (src[0].len == 4) ? &src[1] : &src[0];
+
+	eua->l = 22;
+	eua->v[0] = PDP_EUA_ORG_IETF;
+	eua->v[1] = PDP_EUA_TYPE_v4v6;
+	memcpy(&eua->v[2], &src_v4->v4, 4);
+	memcpy(&eua->v[6], &src_v6->v6, 16);
+
 	return 0;
 }
 
-/*! Convert given in46_addr to PDP End User Address
- *  \returns 0 on success; negative on error */
+/*! Convert given PDP End User Address to an array of in46_addr
+ *  \param[in] eua End User Address structure to parse
+ *  \param[out] dst Array containing 2 in46_addr
+ *  \returns number of parsed addresses (1 or 2) on success; negative on error
+ *
+ * This function expects to receive an End User Address struct together with an
+ * array of 2 zeroed in46_addr structs. The in46_addr structs are filled in
+ * order, hence if the function returns 1 the parsed address will be stored in
+ * the first struct and the second one will be left intact. If 2 is returned, it
+ * is guaranteed that one of them is an IPv4 and the other one is an IPv6, but
+ * the order in which they are presented is not specified and must be
+ * discovered for instance by checking the len field of each address.
+ */
 int in46a_from_eua(const struct ul66_t *eua, struct in46_addr *dst)
 {
 	if (eua->l < 2)
@@ -295,22 +328,46 @@ int in46a_from_eua(const struct ul66_t *eua, struct in46_addr *dst)
 			memcpy(&dst->v4, &eua->v[2], 4);	/* Copy a 4 byte address */
 		else
 			dst->v4.s_addr = 0;
-		break;
+		return 1;
 	case PDP_EUA_TYPE_v6:
 		dst->len = 16;
 		if (eua->l >= 18)
 			memcpy(&dst->v6, &eua->v[2], 16);	/* Copy a 16 byte address */
 		else
 			memset(&dst->v6, 0, 16);
+		return 1;
+	case PDP_EUA_TYPE_v4v6:
+		/* 3GPP TS 29.060, section 7.7.27 */
+		switch (eua->l) {
+			case 2: /* v4 & v6 dynamic */
+				dst[0].v4.s_addr = 0;
+				memset(&dst[1].v6, 0, 16);
+				break;
+			case 6: /* v4 static, v6 dynamic */
+				memcpy(&dst[0].v4, &eua->v[2], 4);
+				memset(&dst[1].v6, 0, 16);
+				break;
+			case 18: /* v4 dynamic, v6 static */
+				dst[0].v4.s_addr = 0;
+				memcpy(&dst[1].v6, &eua->v[2], 16);
+				break;
+			case 22:  /* v4 & v6 static */
+				memcpy(&dst[0].v4, &eua->v[2], 4);
+				memcpy(&dst[1].v6, &eua->v[6], 16);
 				break;
 			default:
 				return -1;
 		}
-	return 0;
+		dst[0].len = 4;
+		dst[1].len = 16;
+		return 2;
+	default:
+		return -1;
+	}
 
 default_to_dyn_v4:
 	/* assume dynamic IPv4 by default */
 	dst->len = 4;
 	dst->v4.s_addr = 0;
-	return 0;
+	return 1;
 }

lib/in46_addr.h

@@ -29,5 +29,5 @@ extern int in46a_prefix_equal(const struct in46_addr *a, const struct in46_addr
 extern int in46a_within_mask(const struct in46_addr *addr, const struct in46_addr *net, size_t prefixlen);
 unsigned int in46a_netmasklen(const struct in46_addr *netmask);
 
-int in46a_to_eua(const struct in46_addr *src, struct ul66_t *eua);
+int in46a_to_eua(const struct in46_addr *src, unsigned int size, struct ul66_t *eua);
 int in46a_from_eua(const struct ul66_t *eua, struct in46_addr *dst);

lib/ippool.c

@@ -26,16 +26,16 @@ int ippool_printaddr(struct ippool_t *this)
 {
 	unsigned int n;
 	printf("ippool_printaddr\n");
-	printf("Firstdyn %d\n", this->firstdyn - this->member);
-	printf("Lastdyn %d\n", this->lastdyn - this->member);
-	printf("Firststat %d\n", this->firststat - this->member);
-	printf("Laststat %d\n", this->laststat - this->member);
-	printf("Listsize %d\n", this->listsize);
+	printf("Firstdyn %td\n", this->firstdyn - this->member);
+	printf("Lastdyn %td\n", this->lastdyn - this->member);
+	printf("Firststat %td\n", this->firststat - this->member);
+	printf("Laststat %td\n", this->laststat - this->member);
+	printf("Listsize %u\n", this->listsize);
 
 	for (n = 0; n < this->listsize; n++) {
 		char s[256];
 		in46a_ntop(&this->member[n].addr, s, sizeof(s));
-		printf("Unit %d inuse %d prev %d next %d addr %s\n",
+		printf("Unit %d inuse %d prev %td next %td addr %s\n",
 		       n,
 		       this->member[n].inuse,
 		       this->member[n].prev - this->member,
@@ -202,7 +202,7 @@ int ippool_new(struct ippool_t **this, const struct in46_prefix *dyn, const stru
 	/* Parse only first instance of pool for now */
 
 	int i;
-	struct in46_addr addr;
+	struct in46_addr addr = { 0 };
 	size_t addrprefixlen;
 	struct in46_addr stataddr;
 	size_t stataddrprefixlen;
@@ -276,9 +276,8 @@ int ippool_new(struct ippool_t **this, const struct in46_prefix *dyn, const stru
 	(*this)->hashmask = (*this)->hashsize - 1;
 
 	/* Allocate hash table */
-	if (!
-	    ((*this)->hash =
-	     calloc(sizeof(struct ippoolm_t), (*this)->hashsize))) {
+	(*this)->hash = calloc((*this)->hashsize, sizeof(struct ippoolm_t *));
+	if (!(*this)->hash) {
 		SYS_ERR(DIP, LOGL_ERROR, 0,
 			"Failed to allocate memory for hash members in ippool");
 		return -1;
@@ -513,7 +512,15 @@ int ippool_newip(struct ippool_t *this, struct ippoolm_t **member,
 		p2->next = NULL;
 		p2->prev = NULL;
 		p2->inuse = 2;	/* Static address in use */
-		memcpy(&p2->addr, addr, sizeof(addr));
+		/* p2->addr.len and addr->len already match (see above). */
+		if (p2->addr.len == sizeof(struct in_addr))
+			p2->addr.v4 = addr->v4;
+		else if (p2->addr.len == sizeof(struct in6_addr))
+			p2->addr.v6 = addr->v6;
+		else {
+			SYS_ERR(DIP, LOGL_ERROR, 0, "MS requested unsupported PDP context type");
+			return -GTPCAUSE_UNKNOWN_PDP;
+		}
 		*member = p2;
 		(void)ippool_hashadd(this, *member);
 		if (0)

lib/netdev.c

@@ -0,0 +1,727 @@
+/*
+ * TUN interface functions.
+ * Copyright (C) 2002, 2003, 2004 Mondru AB.
+ * Copyright (C) 2017-2018 by Harald Welte <laforge@gnumonks.org>
+ *
+ * The contents of this file may be used under the terms of the GNU
+ * General Public License Version 2, provided that the above copyright
+ * notice and this permission notice is included in all copies or
+ * substantial portions of the software.
+ *
+ */
+
+/*
+ * netdev.c: Contains generic network device related functionality.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <errno.h>
+#include <net/route.h>
+#include <net/if.h>
+
+#if defined(__linux__)
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+
+#elif defined (__FreeBSD__)
+#include <net/if_var.h>
+#include <netinet/in_var.h>
+
+#elif defined (__APPLE__)
+#include <net/if.h>
+
+#else
+#error  "Unknown platform!"
+#endif
+
+#include "netdev.h"
+#include "syserr.h"
+
+#if defined(__linux__)
+
+#include <linux/ipv6.h>
+
+static int netdev_nlattr(struct nlmsghdr *n, int nsize, int type, void *d, int dlen)
+{
+	int len = RTA_LENGTH(dlen);
+	int alen = NLMSG_ALIGN(n->nlmsg_len);
+	struct rtattr *rta = (struct rtattr *)(((void *)n) + alen);
+	if (alen + len > nsize)
+		return -1;
+	rta->rta_len = len;
+	rta->rta_type = type;
+	memcpy(RTA_DATA(rta), d, dlen);
+	n->nlmsg_len = alen + len;
+	return 0;
+}
+#endif
+
+static int netdev_sifflags(const char *devname, int flags)
+{
+	struct ifreq ifr;
+	int fd;
+
+	memset(&ifr, '\0', sizeof(ifr));
+	ifr.ifr_flags = flags;
+	strncpy(ifr.ifr_name, devname, IFNAMSIZ);
+	ifr.ifr_name[IFNAMSIZ - 1] = 0;	/* Make sure to terminate */
+	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
+		return -1;
+	}
+	if (ioctl(fd, SIOCSIFFLAGS, &ifr)) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno,
+			"ioctl(SIOCSIFFLAGS) failed");
+		close(fd);
+		return -1;
+	}
+	close(fd);
+	return 0;
+}
+
+int netdev_setaddr4(const char *devname, struct in_addr *addr,
+		    struct in_addr *dstaddr, struct in_addr *netmask)
+{
+	struct ifreq ifr;
+	int fd;
+
+	memset(&ifr, '\0', sizeof(ifr));
+	ifr.ifr_addr.sa_family = AF_INET;
+	ifr.ifr_dstaddr.sa_family = AF_INET;
+
+#if defined(__linux__)
+	ifr.ifr_netmask.sa_family = AF_INET;
+#elif defined(__FreeBSD__) || defined (__APPLE__)
+	((struct sockaddr_in *)&ifr.ifr_addr)->sin_len =
+	    sizeof(struct sockaddr_in);
+	((struct sockaddr_in *)&ifr.ifr_dstaddr)->sin_len =
+	    sizeof(struct sockaddr_in);
+#endif
+
+	strncpy(ifr.ifr_name, devname, IFNAMSIZ);
+	ifr.ifr_name[IFNAMSIZ - 1] = 0;	/* Make sure to terminate */
+
+	/* Create a channel to the NET kernel. */
+	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
+		return -1;
+	}
+
+	if (addr) {		/* Set the interface address */
+		memcpy(&((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr, addr,
+		       sizeof(*addr));
+		if (ioctl(fd, SIOCSIFADDR, (void *)&ifr) < 0) {
+			if (errno != EEXIST) {
+				SYS_ERR(DTUN, LOGL_ERROR, errno,
+					"ioctl(SIOCSIFADDR) failed");
+			} else {
+				SYS_ERR(DTUN, LOGL_NOTICE, errno,
+					"ioctl(SIOCSIFADDR): Address already exists");
+			}
+			close(fd);
+			return -1;
+		}
+	}
+
+	if (dstaddr) {		/* Set the destination address */
+		memcpy(&((struct sockaddr_in *)&ifr.ifr_dstaddr)->sin_addr,
+		       dstaddr, sizeof(*dstaddr));
+		if (ioctl(fd, SIOCSIFDSTADDR, (caddr_t) & ifr) < 0) {
+			SYS_ERR(DTUN, LOGL_ERROR, errno,
+				"ioctl(SIOCSIFDSTADDR) failed");
+			close(fd);
+			return -1;
+		}
+	}
+
+	if (netmask) {		/* Set the netmask */
+#if defined(__linux__)
+		memcpy(&((struct sockaddr_in *)&ifr.ifr_netmask)->sin_addr,
+		       netmask, sizeof(*netmask));
+#elif defined(__FreeBSD__) || defined (__APPLE__)
+		((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr =
+		    netmask->s_addr;
+#endif
+
+		if (ioctl(fd, SIOCSIFNETMASK, (void *)&ifr) < 0) {
+			SYS_ERR(DTUN, LOGL_ERROR, errno,
+				"ioctl(SIOCSIFNETMASK) failed");
+			close(fd);
+			return -1;
+		}
+	}
+
+	close(fd);
+
+	netdev_sifflags(devname, IFF_UP | IFF_RUNNING);
+
+	/* On linux the route to the interface is set automatically
+	   on FreeBSD we have to do this manually */
+#if defined(__FreeBSD__) || defined (__APPLE__)
+	netdev_addroute(dstaddr, addr, &this->netmask);
+#endif
+
+	return 0;
+}
+
+int netdev_setaddr6(const char *devname, struct in6_addr *addr, struct in6_addr *dstaddr,
+		    size_t prefixlen)
+{
+	struct in6_ifreq ifr;
+	int fd;
+
+	memset(&ifr, 0, sizeof(ifr));
+
+#if defined(__linux__)
+	ifr.ifr6_prefixlen = prefixlen;
+	ifr.ifr6_ifindex = if_nametoindex(devname);
+	if (ifr.ifr6_ifindex == 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, 0, "Error getting ifindex for %s\n", devname);
+		return -1;
+	}
+#elif defined(__FreeBSD__) || defined (__APPLE__)
+	strncpy(ifr.ifr_name, devname, IFNAMSIZ);
+#endif
+
+	/* Create a channel to the NET kernel */
+	if ((fd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, 0, "socket() failed");
+		return -1;
+	}
+
+#if defined(__linux__)
+	if (addr) {
+		memcpy(&ifr.ifr6_addr, addr, sizeof(*addr));
+		if (ioctl(fd, SIOCSIFADDR, (void *) &ifr) < 0) {
+			if (errno != EEXIST) {
+				SYS_ERR(DTUN, LOGL_ERROR, 0, "ioctl(SIOCSIFADDR) failed");
+			} else {
+				SYS_ERR(DTUN, LOGL_NOTICE, 0, "ioctl(SIOCSIFADDR): Address already exists");
+			}
+			close(fd);
+			return -1;
+		}
+	}
+
+#if 0
+	/* FIXME: looks like this is not possible/necessary for IPv6? */
+	if (dstaddr) {
+		memcpy(&ifr.ifr6_addr, dstaddr, sizeof(*dstaddr));
+		if (ioctl(fd, SIOCSIFDSTADDR, (caddr_t *) &ifr) < 0) {
+			SYS_ERR(DTUN, LOGL_ERROR, "ioctl(SIOCSIFDSTADDR) failed");
+			close(fd);
+			return -1;
+		}
+	}
+#endif
+
+#elif defined(__FreeBSD__) || defined (__APPLE__)
+	if (addr)
+		memcpy(&ifr.ifr_ifru.ifru_addr, addr, sizeof(ifr.ifr_ifru.ifru_addr));
+	if (dstaddr)
+		memcpy(&ifr.ifr_ifru.ifru_dstaddr, dstaddr, sizeof(ifr.ifr_ifru.ifru_dstaddr));
+
+	if (ioctl(fd, SIOCSIFADDR_IN6, (struct ifreq *)&ifr) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, 0, "ioctl(SIOCSIFADDR_IN6) failed");
+		close(fd);
+		return -1;
+	}
+#endif
+
+	close(fd);
+
+	netdev_sifflags(devname, IFF_UP | IFF_RUNNING);
+
+	/* On linux the route to the interface is set automatically
+	   on FreeBSD we have to do this manually */
+#if 0	/* FIXME */
+//#if defined(__FreeBSD__) || defined (__APPLE__)
+	netdev_addroute6(dstaddr, addr, prefixlen);
+#endif
+
+	return 0;
+}
+
+int netdev_addaddr4(const char *devname, struct in_addr *addr,
+		    struct in_addr *dstaddr, struct in_addr *netmask)
+{
+	int fd;
+#if defined(__linux__)
+	struct {
+		struct nlmsghdr n;
+		struct ifaddrmsg i;
+		char buf[TUN_NLBUFSIZE];
+	} req;
+
+	struct sockaddr_nl local;
+	socklen_t addr_len;
+	int status;
+
+	struct sockaddr_nl nladdr;
+	struct iovec iov;
+	struct msghdr msg;
+
+	memset(&req, 0, sizeof(req));
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
+	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
+	req.n.nlmsg_type = RTM_NEWADDR;
+	req.i.ifa_family = AF_INET;
+	req.i.ifa_prefixlen = 32;	/* 32 FOR IPv4 */
+	req.i.ifa_flags = 0;
+	req.i.ifa_scope = RT_SCOPE_HOST;	/* TODO or 0 */
+	req.i.ifa_index = if_nametoindex(devname);
+	if (!req.i.ifa_index) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "Unable to get ifindex for %s", devname);
+		return -1;
+	}
+
+	netdev_nlattr(&req.n, sizeof(req), IFA_ADDRESS, addr, sizeof(*addr));
+	if (dstaddr)
+		netdev_nlattr(&req.n, sizeof(req), IFA_LOCAL, dstaddr, sizeof(*dstaddr));
+
+	if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
+		return -1;
+	}
+
+	memset(&local, 0, sizeof(local));
+	local.nl_family = AF_NETLINK;
+	local.nl_groups = 0;
+
+	if (bind(fd, (struct sockaddr *)&local, sizeof(local)) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "bind() failed");
+		close(fd);
+		return -1;
+	}
+
+	addr_len = sizeof(local);
+	if (getsockname(fd, (struct sockaddr *)&local, &addr_len) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno,
+			"getsockname() failed");
+		close(fd);
+		return -1;
+	}
+
+	if (addr_len != sizeof(local)) {
+		SYS_ERR(DTUN, LOGL_ERROR, 0,
+			"Wrong address length %d", addr_len);
+		close(fd);
+		return -1;
+	}
+
+	if (local.nl_family != AF_NETLINK) {
+		SYS_ERR(DTUN, LOGL_ERROR, 0,
+			"Wrong address family %d", local.nl_family);
+		close(fd);
+		return -1;
+	}
+
+	iov.iov_base = (void *)&req.n;
+	iov.iov_len = req.n.nlmsg_len;
+
+	msg.msg_name = (void *)&nladdr;
+	msg.msg_namelen = sizeof(nladdr);
+	msg.msg_iov = &iov;
+	msg.msg_iovlen = 1;
+	msg.msg_control = NULL;
+	msg.msg_controllen = 0;
+	msg.msg_flags = 0;
+
+	memset(&nladdr, 0, sizeof(nladdr));
+	nladdr.nl_family = AF_NETLINK;
+	nladdr.nl_pid = 0;
+	nladdr.nl_groups = 0;
+
+	req.n.nlmsg_seq = 0;
+	req.n.nlmsg_flags |= NLM_F_ACK;
+
+	status = sendmsg(fd, &msg, 0);
+	if (status != req.n.nlmsg_len) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "sendmsg() failed, returned %d", status);
+		close(fd);
+		return -1;
+	}
+
+	status = netdev_sifflags(devname, IFF_UP | IFF_RUNNING);
+	if (status == -1) {
+		close(fd);
+		return -1;
+	}
+#elif defined (__FreeBSD__) || defined (__APPLE__)
+	struct ifaliasreq areq;
+
+	memset(&areq, 0, sizeof(areq));
+
+	/* Set up interface name */
+	strncpy(areq.ifra_name, devname, IFNAMSIZ);
+	areq.ifra_name[IFNAMSIZ - 1] = 0;	/* Make sure to terminate */
+
+	((struct sockaddr_in *)&areq.ifra_addr)->sin_family = AF_INET;
+	((struct sockaddr_in *)&areq.ifra_addr)->sin_len =
+	    sizeof(areq.ifra_addr);
+	((struct sockaddr_in *)&areq.ifra_addr)->sin_addr.s_addr = addr->s_addr;
+
+	((struct sockaddr_in *)&areq.ifra_mask)->sin_family = AF_INET;
+	((struct sockaddr_in *)&areq.ifra_mask)->sin_len =
+	    sizeof(areq.ifra_mask);
+	((struct sockaddr_in *)&areq.ifra_mask)->sin_addr.s_addr =
+	    netmask->s_addr;
+
+	/* For some reason FreeBSD uses ifra_broadcast for specifying dstaddr */
+	((struct sockaddr_in *)&areq.ifra_broadaddr)->sin_family = AF_INET;
+	((struct sockaddr_in *)&areq.ifra_broadaddr)->sin_len =
+	    sizeof(areq.ifra_broadaddr);
+	((struct sockaddr_in *)&areq.ifra_broadaddr)->sin_addr.s_addr =
+	    dstaddr->s_addr;
+
+	/* Create a channel to the NET kernel. */
+	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
+		return -1;
+	}
+
+	if (ioctl(fd, SIOCAIFADDR, (void *)&areq) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno,
+			"ioctl(SIOCAIFADDR) failed");
+		close(fd);
+		return -1;
+	}
+#endif
+	close(fd);
+	return 0;
+}
+
+int netdev_addaddr6(const char *devname, struct in6_addr *addr,
+		    struct in6_addr *dstaddr, int prefixlen)
+{
+	int fd;
+#if defined(__linux__)
+	struct {
+		struct nlmsghdr n;
+		struct ifaddrmsg i;
+		char buf[TUN_NLBUFSIZE];
+	} req;
+
+	struct sockaddr_nl local;
+	socklen_t addr_len;
+	int status;
+
+	struct sockaddr_nl nladdr;
+	struct iovec iov;
+	struct msghdr msg;
+
+	memset(&req, 0, sizeof(req));
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
+	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
+	req.n.nlmsg_type = RTM_NEWADDR;
+	req.i.ifa_family = AF_INET6;
+	req.i.ifa_prefixlen = 64;	/* 64 FOR IPv6 */
+	req.i.ifa_flags = 0;
+	req.i.ifa_scope = RT_SCOPE_HOST;	/* TODO or 0 */
+	req.i.ifa_index = if_nametoindex(devname);
+	if (!req.i.ifa_index) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "Unable to get ifindex for %s", devname);
+		return -1;
+	}
+
+	netdev_nlattr(&req.n, sizeof(req), IFA_ADDRESS, addr, sizeof(*addr));
+	if (dstaddr)
+		netdev_nlattr(&req.n, sizeof(req), IFA_LOCAL, dstaddr, sizeof(*dstaddr));
+
+	if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
+		return -1;
+	}
+
+	memset(&local, 0, sizeof(local));
+	local.nl_family = AF_NETLINK;
+	local.nl_groups = 0;
+
+	if (bind(fd, (struct sockaddr *)&local, sizeof(local)) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "bind() failed");
+		close(fd);
+		return -1;
+	}
+
+	addr_len = sizeof(local);
+	if (getsockname(fd, (struct sockaddr *)&local, &addr_len) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno,
+			"getsockname() failed");
+		close(fd);
+		return -1;
+	}
+
+	if (addr_len != sizeof(local)) {
+		SYS_ERR(DTUN, LOGL_ERROR, 0,
+			"Wrong address length %d", addr_len);
+		close(fd);
+		return -1;
+	}
+
+	if (local.nl_family != AF_NETLINK) {
+		SYS_ERR(DTUN, LOGL_ERROR, 0,
+			"Wrong address family %d", local.nl_family);
+		close(fd);
+		return -1;
+	}
+
+	iov.iov_base = (void *)&req.n;
+	iov.iov_len = req.n.nlmsg_len;
+
+	msg.msg_name = (void *)&nladdr;
+	msg.msg_namelen = sizeof(nladdr);
+	msg.msg_iov = &iov;
+	msg.msg_iovlen = 1;
+	msg.msg_control = NULL;
+	msg.msg_controllen = 0;
+	msg.msg_flags = 0;
+
+	memset(&nladdr, 0, sizeof(nladdr));
+	nladdr.nl_family = AF_NETLINK;
+	nladdr.nl_pid = 0;
+	nladdr.nl_groups = 0;
+
+	req.n.nlmsg_seq = 0;
+	req.n.nlmsg_flags |= NLM_F_ACK;
+
+	status = sendmsg(fd, &msg, 0);
+	if (status != req.n.nlmsg_len) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "sendmsg() failed, returned %d", status);
+		close(fd);
+		return -1;
+	}
+
+	status = netdev_sifflags(devname, IFF_UP | IFF_RUNNING);
+	if (status == -1) {
+		close(fd);
+		return -1;
+	}
+#elif defined (__FreeBSD__) || defined (__APPLE__)
+	struct ifaliasreq areq;
+
+	memset(&areq, 0, sizeof(areq));
+
+	/* Set up interface name */
+	strncpy(areq.ifra_name, devname, IFNAMSIZ);
+	areq.ifra_name[IFNAMSIZ - 1] = 0;	/* Make sure to terminate */
+
+	((struct sockaddr_in6 *)&areq.ifra_addr)->sin6_family = AF_INET6;
+	((struct sockaddr_in6 *)&areq.ifra_addr)->sin6_len = sizeof(areq.ifra_addr);
+	((struct sockaddr_in6 *)&areq.ifra_addr)->sin6_addr.s6_addr = addr->s6_addr;
+
+	((struct sockaddr_in6 *)&areq.ifra_mask)->sin6_family = AF_INET6;
+	((struct sockaddr_in6 *)&areq.ifra_mask)->sin6_len = sizeof(areq.ifra_mask);
+	((struct sockaddr_in6 *)&areq.ifra_mask)->sin6_addr.s6_addr = netmask->s6_addr;
+
+	/* For some reason FreeBSD uses ifra_broadcast for specifying dstaddr */
+	((struct sockaddr_in6 *)&areq.ifra_broadaddr)->sin6_family = AF_INET6;
+	((struct sockaddr_in6 *)&areq.ifra_broadaddr)->sin6_len = sizeof(areq.ifra_broadaddr);
+	((struct sockaddr_in6 *)&areq.ifra_broadaddr)->sin6_addr.s6_addr = dstaddr->s6_addr;
+
+	/* Create a channel to the NET kernel. */
+	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
+		return -1;
+	}
+
+	if (ioctl(fd, SIOCAIFADDR, (void *)&areq) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno,
+			"ioctl(SIOCAIFADDR) failed");
+		close(fd);
+		return -1;
+	}
+#endif
+	close(fd);
+	return 0;
+}
+
+static int netdev_route(struct in_addr *dst, struct in_addr *gateway, struct in_addr *mask, int delete)
+{
+	int fd;
+#if defined(__linux__)
+	struct rtentry r;
+
+	memset(&r, '\0', sizeof(r));
+	r.rt_flags = RTF_UP | RTF_GATEWAY;	/* RTF_HOST not set */
+
+	/* Create a channel to the NET kernel. */
+	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
+		return -1;
+	}
+
+	r.rt_dst.sa_family = AF_INET;
+	r.rt_gateway.sa_family = AF_INET;
+	r.rt_genmask.sa_family = AF_INET;
+	memcpy(&((struct sockaddr_in *)&r.rt_dst)->sin_addr, dst, sizeof(*dst));
+	memcpy(&((struct sockaddr_in *)&r.rt_gateway)->sin_addr, gateway,
+	       sizeof(*gateway));
+	memcpy(&((struct sockaddr_in *)&r.rt_genmask)->sin_addr, mask,
+	       sizeof(*mask));
+
+	if (delete) {
+		if (ioctl(fd, SIOCDELRT, (void *)&r) < 0) {
+			SYS_ERR(DTUN, LOGL_ERROR, errno,
+				"ioctl(SIOCDELRT) failed");
+			close(fd);
+			return -1;
+		}
+	} else {
+		if (ioctl(fd, SIOCADDRT, (void *)&r) < 0) {
+			SYS_ERR(DTUN, LOGL_ERROR, errno,
+				"ioctl(SIOCADDRT) failed");
+			close(fd);
+			return -1;
+		}
+	}
+#elif defined(__FreeBSD__) || defined (__APPLE__)
+	struct {
+		struct rt_msghdr rt;
+		struct sockaddr_in dst;
+		struct sockaddr_in gate;
+		struct sockaddr_in mask;
+	} req;
+	struct rt_msghdr *rtm;
+
+	if ((fd = socket(AF_ROUTE, SOCK_RAW, 0)) == -1) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
+		return -1;
+	}
+
+	memset(&req, 0x00, sizeof(req));
+
+	rtm = &req.rt;
+
+	rtm->rtm_msglen = sizeof(req);
+	rtm->rtm_version = RTM_VERSION;
+	if (delete) {
+		rtm->rtm_type = RTM_DELETE;
+	} else {
+		rtm->rtm_type = RTM_ADD;
+	}
+	rtm->rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC;	/* TODO */
+	rtm->rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
+	rtm->rtm_pid = getpid();
+	rtm->rtm_seq = 0044;	/* TODO */
+
+	req.dst.sin_family = AF_INET;
+	req.dst.sin_len = sizeof(req.dst);
+	req.mask.sin_family = AF_INET;
+	req.mask.sin_len = sizeof(req.mask);
+	req.gate.sin_family = AF_INET;
+	req.gate.sin_len = sizeof(req.gate);
+
+	req.dst.sin_addr.s_addr = dst->s_addr;
+	req.mask.sin_addr.s_addr = mask->s_addr;
+	req.gate.sin_addr.s_addr = gateway->s_addr;
+
+	if (write(fd, rtm, rtm->rtm_msglen) < 0) {
+		SYS_ERR(DTUN, LOGL_ERROR, errno, "write() failed");
+		close(fd);
+		return -1;
+	}
+#endif
+	close(fd);
+	return 0;
+}
+
+int netdev_addroute(struct in_addr *dst, struct in_addr *gateway, struct in_addr *mask)
+{
+	return netdev_route(dst, gateway, mask, 0);
+}
+
+int netdev_delroute(struct in_addr *dst, struct in_addr *gateway, struct in_addr *mask)
+{
+	return netdev_route(dst, gateway, mask, 1);
+}
+
+#include <ifaddrs.h>
+
+/*! Obtain the local address of a network device
+ *  \param[in] devname Target device owning the IP
+ *  \param[out] prefix_list List of prefix structures to fill with each IPv4/6 and prefix length found.
+ *  \param[in] prefix_size Amount of elements allowed to be fill in the prefix_list array.
+ *  \param[in] flags Specify which kind of IP to look for: IP_TYPE_IPv4, IP_TYPE_IPv6_LINK, IP_TYPE_IPv6_NONLINK
+ *  \returns The number of ips found following the criteria specified by flags, -1 on error.
+ *
+ * This function will fill prefix_list with up to prefix_size IPs following the
+ * criteria specified by flags parameter. It returns the number of IPs matching
+ * the criteria. As a result, the number returned can be bigger than
+ * prefix_size. It can be used with prefix_size=0 to get an estimate of the size
+ * needed for prefix_list.
+ */
+int netdev_ip_local_get(const char *devname, struct in46_prefix *prefix_list, size_t prefix_size, int flags)
+{
+	static const uint8_t ll_prefix[] = { 0xfe,0x80, 0,0, 0,0, 0,0 };
+	struct ifaddrs *ifaddr, *ifa;
+	struct in46_addr netmask;
+	size_t count = 0;
+	bool is_ipv6_ll;
+
+	if (getifaddrs(&ifaddr) == -1) {
+		return -1;
+	}
+
+	for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
+		if (ifa->ifa_addr == NULL)
+			continue;
+
+		if (strcmp(ifa->ifa_name, devname))
+			continue;
+
+		if (ifa->ifa_addr->sa_family == AF_INET && (flags & IP_TYPE_IPv4)) {
+			struct sockaddr_in *sin4 = (struct sockaddr_in *) ifa->ifa_addr;
+			struct sockaddr_in *netmask4 = (struct sockaddr_in *) ifa->ifa_netmask;
+
+			if (count < prefix_size) {
+				netmask.len = sizeof(netmask4->sin_addr);
+				netmask.v4 = netmask4->sin_addr;
+				prefix_list[count].addr.len = sizeof(sin4->sin_addr);
+				prefix_list[count].addr.v4 = sin4->sin_addr;
+				prefix_list[count].prefixlen = in46a_netmasklen(&netmask);
+			}
+			count++;
+		}
+
+		if (ifa->ifa_addr->sa_family == AF_INET6 && (flags & IP_TYPE_IPv6)) {
+			struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) ifa->ifa_addr;
+			struct sockaddr_in6 *netmask6 = (struct sockaddr_in6 *) ifa->ifa_netmask;
+
+			is_ipv6_ll = !memcmp(sin6->sin6_addr.s6_addr, ll_prefix, sizeof(ll_prefix));
+			if ((flags & IP_TYPE_IPv6_NONLINK) && is_ipv6_ll)
+				continue;
+			if ((flags & IP_TYPE_IPv6_LINK) && !is_ipv6_ll)
+				continue;
+
+			if (count < prefix_size) {
+				netmask.len = sizeof(netmask6->sin6_addr);
+				netmask.v6 = netmask6->sin6_addr;
+				prefix_list[count].addr.len = sizeof(sin6->sin6_addr);
+				prefix_list[count].addr.v6 = sin6->sin6_addr;
+				prefix_list[count].prefixlen = in46a_netmasklen(&netmask);
+			}
+			count++;
+		}
+	}
+
+	freeifaddrs(ifaddr);
+	return count;
+}

lib/netdev.h

@@ -0,0 +1,72 @@
+#pragma once
+/*
+ * TUN interface functions.
+ * Copyright (C) 2002, 2003 Mondru AB.
+ * Copyright (C) 2017-2018 by Harald Welte <laforge@gnumonks.org>
+ *
+ * The contents of this file may be used under the terms of the GNU
+ * General Public License Version 2, provided that the above copyright
+ * notice and this permission notice is included in all copies or
+ * substantial portions of the software.
+ *
+ */
+
+#include <net/if.h>
+
+#include "../lib/in46_addr.h"
+
+#define TUN_NLBUFSIZE   1024
+
+#include "config.h"
+
+/* ipv6 ip type flags for tun_ipv6_local_get() */
+enum {
+	IP_TYPE_IPv4 = 1,
+	IP_TYPE_IPv6_LINK = 2,
+	IP_TYPE_IPv6_NONLINK = 4,
+};
+#define IP_TYPE_IPv6 (IP_TYPE_IPv6_LINK | IP_TYPE_IPv6_NONLINK)
+
+
+#ifndef HAVE_IPHDR
+struct iphdr
+  {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+    unsigned int ihl:4;
+    unsigned int version:4;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+    unsigned int version:4;
+    unsigned int ihl:4;
+#else
+# error	"Please fix <bits/endian.h>"
+#endif
+    u_int8_t tos;
+    u_int16_t tot_len;
+    u_int16_t id;
+    u_int16_t frag_off;
+    u_int8_t ttl;
+    u_int8_t protocol;
+    u_int16_t check;
+    u_int32_t saddr;
+    u_int32_t daddr;
+    /*The options start here. */
+  };
+#endif /* !HAVE_IPHDR */
+
+extern int netdev_setaddr4(const char *devname, struct in_addr *addr,
+			   struct in_addr *dstaddr, struct in_addr *netmask);
+
+extern int netdev_setaddr6(const char *devname, struct in6_addr *addr, struct in6_addr *dstaddr,
+			   size_t prefixlen);
+
+extern int netdev_addaddr4(const char *devname, struct in_addr *addr,
+			   struct in_addr *dstaddr, struct in_addr *netmask);
+
+extern int netdev_addaddr6(const char *devname, struct in6_addr *addr,
+			   struct in6_addr *dstaddr, int prefixlen);
+
+extern int netdev_addroute(struct in_addr *dst, struct in_addr *gateway, struct in_addr *mask);
+extern int netdev_delroute(struct in_addr *dst, struct in_addr *gateway, struct in_addr *mask);
+
+extern int netdev_ip_local_get(const char *devname, struct in46_prefix *prefix_list,
+				size_t prefix_size, int flags);

lib/tun.c

@@ -1,7 +1,7 @@
 /*
  * TUN interface functions.
  * Copyright (C) 2002, 2003, 2004 Mondru AB.
- * Copyright (C) 2017 by Harald Welte <laforge@gnumonks.org>
+ * Copyright (C) 2017-2018 by Harald Welte <laforge@gnumonks.org>
  *
  * The contents of this file may be used under the terms of the GNU
  * General Public License Version 2, provided that the above copyright
@@ -19,6 +19,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
@@ -42,8 +43,6 @@
 
 #if defined(__linux__)
 #include <linux/if_tun.h>
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
 
 #elif defined (__FreeBSD__)
 #include <net/if_tun.h>
@@ -59,527 +58,104 @@
 
 #include "tun.h"
 #include "syserr.h"
-
-#if defined(__linux__)
-
-#include <linux/ipv6.h>
-
-static int tun_nlattr(struct nlmsghdr *n, int nsize, int type, void *d, int dlen)
-{
-	int len = RTA_LENGTH(dlen);
-	int alen = NLMSG_ALIGN(n->nlmsg_len);
-	struct rtattr *rta = (struct rtattr *)(((void *)n) + alen);
-	if (alen + len > nsize)
-		return -1;
-	rta->rta_len = len;
-	rta->rta_type = type;
-	memcpy(RTA_DATA(rta), d, dlen);
-	n->nlmsg_len = alen + len;
-	return 0;
-}
-#endif
-
-static int tun_sifflags(struct tun_t *this, int flags)
-{
-	struct ifreq ifr;
-	int fd;
-
-	memset(&ifr, '\0', sizeof(ifr));
-	ifr.ifr_flags = flags;
-	strncpy(ifr.ifr_name, this->devname, IFNAMSIZ);
-	ifr.ifr_name[IFNAMSIZ - 1] = 0;	/* Make sure to terminate */
-	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
-		return -1;
-	}
-	if (ioctl(fd, SIOCSIFFLAGS, &ifr)) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno,
-			"ioctl(SIOCSIFFLAGS) failed");
-		close(fd);
-		return -1;
-	}
-	close(fd);
-	return 0;
-}
+#include "gtp-kernel.h"
 
 static int tun_setaddr4(struct tun_t *this, struct in_addr *addr,
 			struct in_addr *dstaddr, struct in_addr *netmask)
 {
-	struct ifreq ifr;
-	int fd;
+	int rc;
+	rc = netdev_setaddr4(this->devname, addr, dstaddr, netmask);
+	if (rc < 0)
+		return rc;
 
-	memset(&ifr, '\0', sizeof(ifr));
-	ifr.ifr_addr.sa_family = AF_INET;
-	ifr.ifr_dstaddr.sa_family = AF_INET;
-
-#if defined(__linux__)
-	ifr.ifr_netmask.sa_family = AF_INET;
-
-#elif defined(__FreeBSD__) || defined (__APPLE__)
-	((struct sockaddr_in *)&ifr.ifr_addr)->sin_len =
-	    sizeof(struct sockaddr_in);
-	((struct sockaddr_in *)&ifr.ifr_dstaddr)->sin_len =
-	    sizeof(struct sockaddr_in);
-#endif
-
-	strncpy(ifr.ifr_name, this->devname, IFNAMSIZ);
-	ifr.ifr_name[IFNAMSIZ - 1] = 0;	/* Make sure to terminate */
-
-	/* Create a channel to the NET kernel. */
-	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
-		return -1;
+	if (addr) {
+		this->addr.len = sizeof(struct in_addr);
+		this->addr.v4.s_addr = addr->s_addr;
 	}
-
-	if (addr) {		/* Set the interface address */
-		this->addr.s_addr = addr->s_addr;
-		memcpy(&((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr, addr,
-		       sizeof(*addr));
-		if (ioctl(fd, SIOCSIFADDR, (void *)&ifr) < 0) {
-			if (errno != EEXIST) {
-				SYS_ERR(DTUN, LOGL_ERROR, errno,
-					"ioctl(SIOCSIFADDR) failed");
-			} else {
-				SYS_ERR(DTUN, LOGL_NOTICE, errno,
-					"ioctl(SIOCSIFADDR): Address already exists");
+	if (dstaddr) {
+		this->dstaddr.len = sizeof(struct in_addr);
+		this->dstaddr.v4.s_addr = dstaddr->s_addr;
 	}
-			close(fd);
-			return -1;
-		}
-	}
-
-	if (dstaddr) {		/* Set the destination address */
-		this->dstaddr.s_addr = dstaddr->s_addr;
-		memcpy(&((struct sockaddr_in *)&ifr.ifr_dstaddr)->sin_addr,
-		       dstaddr, sizeof(*dstaddr));
-		if (ioctl(fd, SIOCSIFDSTADDR, (caddr_t) & ifr) < 0) {
-			SYS_ERR(DTUN, LOGL_ERROR, errno,
-				"ioctl(SIOCSIFDSTADDR) failed");
-			close(fd);
-			return -1;
-		}
-	}
-
-	if (netmask) {		/* Set the netmask */
+	if (netmask)
 		this->netmask.s_addr = netmask->s_addr;
-#if defined(__linux__)
-		memcpy(&((struct sockaddr_in *)&ifr.ifr_netmask)->sin_addr,
-		       netmask, sizeof(*netmask));
-
-#elif defined(__FreeBSD__) || defined (__APPLE__)
-		((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr =
-		    netmask->s_addr;
-#endif
-
-		if (ioctl(fd, SIOCSIFNETMASK, (void *)&ifr) < 0) {
-			SYS_ERR(DTUN, LOGL_ERROR, errno,
-				"ioctl(SIOCSIFNETMASK) failed");
-			close(fd);
-			return -1;
-		}
-	}
-
-	close(fd);
 	this->addrs++;
-
-	/* On linux the route to the interface is set automatically
-	   on FreeBSD we have to do this manually */
-
-	/* TODO: How does it work on Solaris? */
-
-	tun_sifflags(this, IFF_UP | IFF_RUNNING);
-
 #if defined(__FreeBSD__) || defined (__APPLE__)
-	tun_addroute(this, dstaddr, addr, &this->netmask);
 	this->routes = 1;
 #endif
 
-	return 0;
+	return rc;
 }
 
 static int tun_setaddr6(struct tun_t *this, struct in6_addr *addr, struct in6_addr *dstaddr,
 			size_t prefixlen)
 {
-	struct in6_ifreq ifr;
-	int fd;
-
-	memset(&ifr, 0, sizeof(ifr));
-
-#if defined(__linux__)
-	ifr.ifr6_prefixlen = prefixlen;
-	ifr.ifr6_ifindex = if_nametoindex(this->devname);
-	if (ifr.ifr6_ifindex == 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, 0, "Error getting ifindex for %s\n", this->devname);
-		return -1;
-	}
-#elif defined(__FreeBSD__) || defined (__APPLE__)
-	strncpy(ifr.ifr_name, this->devname, IFNAMSIZ);
-#endif
-
-	/* Create a channel to the NET kernel */
-	if ((fd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, 0, "socket() failed");
-		return -1;
-	}
-
-#if defined(__linux__)
-	if (addr) {
-		memcpy(&ifr.ifr6_addr, addr, sizeof(*addr));
-		if (ioctl(fd, SIOCSIFADDR, (void *) &ifr) < 0) {
-			if (errno != EEXIST) {
-				SYS_ERR(DTUN, LOGL_ERROR, 0, "ioctl(SIOCSIFADDR) failed");
-			} else {
-				SYS_ERR(DTUN, LOGL_NOTICE, 0, "ioctl(SIOCSIFADDR): Address already exists");
-			}
-			close(fd);
-			return -1;
-		}
-	}
-
-#if 0
-	/* FIXME: looks like this is not possible/necessary for IPv6? */
+	int rc;
+	rc = netdev_setaddr6(this->devname, addr, dstaddr, prefixlen);
+	if (rc < 0)
+		return rc;
 	if (dstaddr) {
-		memcpy(&this->dstaddr, dstaddr, sizeof(*dstaddr));
-		memcpy(&ifr.ifr6_addr, dstaddr, sizeof(*dstaddr));
-		if (ioctl(fd, SIOCSIFDSTADDR, (caddr_t *) &ifr) < 0) {
-			SYS_ERR(DTUN, LOGL_ERROR, "ioctl(SIOCSIFDSTADDR) failed");
-			close(fd);
-			return -1;
+		this->dstaddr.len = sizeof(*dstaddr);
+		memcpy(&this->dstaddr.v6, dstaddr, sizeof(*dstaddr));
 	}
-	}
-#endif
-
-#elif defined(__FreeBSD__) || defined (__APPLE__)
-	if (addr)
-		memcpy(&ifr.ifr_ifru.ifru_addr, addr, sizeof(ifr.ifr_ifru.ifru_addr));
-	if (dstaddr)
-		memcpy(&ifr.ifr_ifru.ifru_dstaddr, dstaddr, sizeof(ifr.ifr_ifru.ifru_dstaddr));
-
-	if (ioctl(fd, SIOCSIFADDR_IN6, (struct ifreq *)&ifr) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, 0, "ioctl(SIOCSIFADDR_IN6) failed");
-		close(fd);
-		return -1;
-	}
-#endif
-
-	close(fd);
 	this->addrs++;
-
-	/* On linux the route to the interface is set automatically
-	   on FreeBSD we have to do this manually */
-
-	/* TODO: How does it work on Solaris? */
-
-	tun_sifflags(this, IFF_UP | IFF_RUNNING);
-
-#if 0	/* FIXME */
-//#if defined(__FreeBSD__) || defined (__APPLE__)
-	tun_addroute6(this, dstaddr, addr, prefixlen);
+#if defined(__FreeBSD__) || defined (__APPLE__)
 	this->routes = 1;
 #endif
 
-	return 0;
+	return rc;
 }
 
-int tun_setaddr(struct tun_t *this, struct in46_addr *addr, struct in46_addr *dstaddr, size_t prefixlen)
-{
-	struct in_addr netmask;
-	switch (addr->len) {
-	case 4:
-		netmask.s_addr = htonl(0xffffffff << (32 - prefixlen));
-		return tun_setaddr4(this, &addr->v4, dstaddr ? &dstaddr->v4 : NULL, &netmask);
-	case 16:
-		return tun_setaddr6(this, &addr->v6, dstaddr ? &dstaddr->v6 : NULL, prefixlen);
-	default:
-		return -1;
-	}
-}
-
-int tun_addaddr(struct tun_t *this,
-		struct in_addr *addr,
+static int tun_addaddr4(struct tun_t *this, struct in_addr *addr,
 			struct in_addr *dstaddr, struct in_addr *netmask)
 {
-
-#if defined(__linux__)
-	struct {
-		struct nlmsghdr n;
-		struct ifaddrmsg i;
-		char buf[TUN_NLBUFSIZE];
-	} req;
-
-	struct sockaddr_nl local;
-	socklen_t addr_len;
-	int fd;
-	int status;
-
-	struct sockaddr_nl nladdr;
-	struct iovec iov;
-	struct msghdr msg;
-
-	if (!this->addrs)	/* Use ioctl for first addr to make ping work */
-		return tun_setaddr4(this, addr, dstaddr, netmask);
-
-	memset(&req, 0, sizeof(req));
-	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
-	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
-	req.n.nlmsg_type = RTM_NEWADDR;
-	req.i.ifa_family = AF_INET;
-	req.i.ifa_prefixlen = 32;	/* 32 FOR IPv4 */
-	req.i.ifa_flags = 0;
-	req.i.ifa_scope = RT_SCOPE_HOST;	/* TODO or 0 */
-	req.i.ifa_index = if_nametoindex(this->devname);
-	if (!req.i.ifa_index) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno, "Unable to get ifindex for %s", this->devname);
-		return -1;
-	}
-
-	tun_nlattr(&req.n, sizeof(req), IFA_ADDRESS, addr, sizeof(addr));
-	tun_nlattr(&req.n, sizeof(req), IFA_LOCAL, dstaddr, sizeof(dstaddr));
-
-	if ((fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
-		return -1;
-	}
-
-	memset(&local, 0, sizeof(local));
-	local.nl_family = AF_NETLINK;
-	local.nl_groups = 0;
-
-	if (bind(fd, (struct sockaddr *)&local, sizeof(local)) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno, "bind() failed");
-		close(fd);
-		return -1;
-	}
-
-	addr_len = sizeof(local);
-	if (getsockname(fd, (struct sockaddr *)&local, &addr_len) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno,
-			"getsockname() failed");
-		close(fd);
-		return -1;
-	}
-
-	if (addr_len != sizeof(local)) {
-		SYS_ERR(DTUN, LOGL_ERROR, 0,
-			"Wrong address length %d", addr_len);
-		close(fd);
-		return -1;
-	}
-
-	if (local.nl_family != AF_NETLINK) {
-		SYS_ERR(DTUN, LOGL_ERROR, 0,
-			"Wrong address family %d", local.nl_family);
-		close(fd);
-		return -1;
-	}
-
-	iov.iov_base = (void *)&req.n;
-	iov.iov_len = req.n.nlmsg_len;
-
-	msg.msg_name = (void *)&nladdr;
-	msg.msg_namelen = sizeof(nladdr);
-	msg.msg_iov = &iov;
-	msg.msg_iovlen = 1;
-	msg.msg_control = NULL;
-	msg.msg_controllen = 0;
-	msg.msg_flags = 0;
-
-	memset(&nladdr, 0, sizeof(nladdr));
-	nladdr.nl_family = AF_NETLINK;
-	nladdr.nl_pid = 0;
-	nladdr.nl_groups = 0;
-
-	req.n.nlmsg_seq = 0;
-	req.n.nlmsg_flags |= NLM_F_ACK;
-
-	status = sendmsg(fd, &msg, 0);
-	if (status != req.n.nlmsg_len) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno, "sendmsg() failed, returned %d", status);
-		close(fd);
-		return -1;
-	}
-
-	status = tun_sifflags(this, IFF_UP | IFF_RUNNING);
-	if (status == -1) {
-		close(fd);
-		return -1;
-	}
-
-
-	close(fd);
-	this->addrs++;
-	return 0;
-
-#elif defined (__FreeBSD__) || defined (__APPLE__)
-
-	int fd;
-	struct ifaliasreq areq;
+	int rc;
 
 	/* TODO: Is this needed on FreeBSD? */
 	if (!this->addrs)	/* Use ioctl for first addr to make ping work */
 		return tun_setaddr4(this, addr, dstaddr, netmask);	/* TODO dstaddr */
 
-	memset(&areq, 0, sizeof(areq));
+	rc = netdev_addaddr4(this->devname, addr, dstaddr, netmask);
+	if (rc < 0)
+		return rc;
 
-	/* Set up interface name */
-	strncpy(areq.ifra_name, this->devname, IFNAMSIZ);
-	areq.ifra_name[IFNAMSIZ - 1] = 0;	/* Make sure to terminate */
-
-	((struct sockaddr_in *)&areq.ifra_addr)->sin_family = AF_INET;
-	((struct sockaddr_in *)&areq.ifra_addr)->sin_len =
-	    sizeof(areq.ifra_addr);
-	((struct sockaddr_in *)&areq.ifra_addr)->sin_addr.s_addr = addr->s_addr;
-
-	((struct sockaddr_in *)&areq.ifra_mask)->sin_family = AF_INET;
-	((struct sockaddr_in *)&areq.ifra_mask)->sin_len =
-	    sizeof(areq.ifra_mask);
-	((struct sockaddr_in *)&areq.ifra_mask)->sin_addr.s_addr =
-	    netmask->s_addr;
-
-	/* For some reason FreeBSD uses ifra_broadcast for specifying dstaddr */
-	((struct sockaddr_in *)&areq.ifra_broadaddr)->sin_family = AF_INET;
-	((struct sockaddr_in *)&areq.ifra_broadaddr)->sin_len =
-	    sizeof(areq.ifra_broadaddr);
-	((struct sockaddr_in *)&areq.ifra_broadaddr)->sin_addr.s_addr =
-	    dstaddr->s_addr;
-
-	/* Create a channel to the NET kernel. */
-	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
-		return -1;
-	}
-
-	if (ioctl(fd, SIOCAIFADDR, (void *)&areq) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno,
-			"ioctl(SIOCAIFADDR) failed");
-		close(fd);
-		return -1;
-	}
-
-	close(fd);
 	this->addrs++;
-	return 0;
-
-#endif
 
+	return rc;
 }
 
-static int tun_route(struct tun_t *this,
-	      struct in_addr *dst,
-	      struct in_addr *gateway, struct in_addr *mask, int delete)
+static int tun_addaddr6(struct tun_t *this,
+		struct in6_addr *addr,
+		struct in6_addr *dstaddr, int prefixlen)
 {
+	int rc;
 
-#if defined(__linux__)
+	if (!this->addrs)	/* Use ioctl for first addr to make ping work */
+		return tun_setaddr6(this, addr, dstaddr, prefixlen);
 
-	struct rtentry r;
-	int fd;
+	rc = netdev_addaddr6(this->devname, addr, dstaddr, prefixlen);
+	if (rc < 0)
+		return rc;
 
-	memset(&r, '\0', sizeof(r));
-	r.rt_flags = RTF_UP | RTF_GATEWAY;	/* RTF_HOST not set */
-
-	/* Create a channel to the NET kernel. */
-	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
-		return -1;
-	}
-
-	r.rt_dst.sa_family = AF_INET;
-	r.rt_gateway.sa_family = AF_INET;
-	r.rt_genmask.sa_family = AF_INET;
-	memcpy(&((struct sockaddr_in *)&r.rt_dst)->sin_addr, dst, sizeof(*dst));
-	memcpy(&((struct sockaddr_in *)&r.rt_gateway)->sin_addr, gateway,
-	       sizeof(*gateway));
-	memcpy(&((struct sockaddr_in *)&r.rt_genmask)->sin_addr, mask,
-	       sizeof(*mask));
-
-	if (delete) {
-		if (ioctl(fd, SIOCDELRT, (void *)&r) < 0) {
-			SYS_ERR(DTUN, LOGL_ERROR, errno,
-				"ioctl(SIOCDELRT) failed");
-			close(fd);
-			return -1;
-		}
-	} else {
-		if (ioctl(fd, SIOCADDRT, (void *)&r) < 0) {
-			SYS_ERR(DTUN, LOGL_ERROR, errno,
-				"ioctl(SIOCADDRT) failed");
-			close(fd);
-			return -1;
-		}
-	}
-	close(fd);
-	return 0;
-
-#elif defined(__FreeBSD__) || defined (__APPLE__)
-
-	struct {
-		struct rt_msghdr rt;
-		struct sockaddr_in dst;
-		struct sockaddr_in gate;
-		struct sockaddr_in mask;
-	} req;
-
-	int fd;
-	struct rt_msghdr *rtm;
-
-	if ((fd = socket(AF_ROUTE, SOCK_RAW, 0)) == -1) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno, "socket() failed");
-		return -1;
-	}
-
-	memset(&req, 0x00, sizeof(req));
-
-	rtm = &req.rt;
-
-	rtm->rtm_msglen = sizeof(req);
-	rtm->rtm_version = RTM_VERSION;
-	if (delete) {
-		rtm->rtm_type = RTM_DELETE;
-	} else {
-		rtm->rtm_type = RTM_ADD;
-	}
-	rtm->rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC;	/* TODO */
-	rtm->rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
-	rtm->rtm_pid = getpid();
-	rtm->rtm_seq = 0044;	/* TODO */
-
-	req.dst.sin_family = AF_INET;
-	req.dst.sin_len = sizeof(req.dst);
-	req.mask.sin_family = AF_INET;
-	req.mask.sin_len = sizeof(req.mask);
-	req.gate.sin_family = AF_INET;
-	req.gate.sin_len = sizeof(req.gate);
-
-	req.dst.sin_addr.s_addr = dst->s_addr;
-	req.mask.sin_addr.s_addr = mask->s_addr;
-	req.gate.sin_addr.s_addr = gateway->s_addr;
-
-	if (write(fd, rtm, rtm->rtm_msglen) < 0) {
-		SYS_ERR(DTUN, LOGL_ERROR, errno, "write() failed");
-		close(fd);
-		return -1;
-	}
-	close(fd);
-	return 0;
-#endif
+	this->addrs++;
 
+	return rc;
 }
 
-int tun_addroute(struct tun_t *this,
-		 struct in_addr *dst,
-		 struct in_addr *gateway, struct in_addr *mask)
+int tun_addaddr(struct tun_t *this, struct in46_addr *addr, struct in46_addr *dstaddr, size_t prefixlen)
 {
-	return tun_route(this, dst, gateway, mask, 0);
+	struct in_addr netmask;
+	switch (addr->len) {
+	case 4:
+		netmask.s_addr = htonl(0xffffffff << (32 - prefixlen));
+		return tun_addaddr4(this, &addr->v4, dstaddr ? &dstaddr->v4 : NULL, &netmask);
+	case 16:
+		return tun_addaddr6(this, &addr->v6, dstaddr ? &dstaddr->v6 : NULL, prefixlen);
+	default:
+		return -1;
+	}
 }
 
-int tun_delroute(struct tun_t *this,
-		 struct in_addr *dst,
-		 struct in_addr *gateway, struct in_addr *mask)
-{
-	return tun_route(this, dst, gateway, mask, 1);
-}
-
-int tun_new(struct tun_t **tun, const char *dev_name)
+int tun_new(struct tun_t **tun, const char *dev_name, bool use_kernel, int fd0, int fd1u)
 {
 
 #if defined(__linux__)
@@ -602,6 +178,7 @@ int tun_new(struct tun_t **tun, const char *dev_name)
 	(*tun)->routes = 0;
 
 #if defined(__linux__)
+	if (!use_kernel) {
 		/* Open the actual tun device */
 		if (((*tun)->fd = open("/dev/net/tun", O_RDWR)) < 0) {
 			SYS_ERR(DTUN, LOGL_ERROR, errno, "open() failed");
@@ -622,11 +199,32 @@ int tun_new(struct tun_t **tun, const char *dev_name)
 		strncpy((*tun)->devname, ifr.ifr_name, IFNAMSIZ);
 		(*tun)->devname[IFNAMSIZ - 1] = 0;
 
-	ioctl((*tun)->fd, TUNSETNOCSUM, 1);	/* Disable checksums */
+		/* Disable checksums */
+		if (ioctl((*tun)->fd, TUNSETNOCSUM, 1) < 0) {
+			SYS_ERR(DTUN, LOGL_NOTICE, errno, "could not disable checksum on %s", (*tun)->devname);
+		}
 		return 0;
+	} else {
+		strncpy((*tun)->devname, dev_name, IFNAMSIZ);
+		(*tun)->devname[IFNAMSIZ - 1] = 0;
+		(*tun)->fd = -1;
+
+		if (gtp_kernel_create(-1, dev_name, fd0, fd1u) < 0) {
+			LOGP(DTUN, LOGL_ERROR, "cannot create GTP tunnel device: %s\n",
+				strerror(errno));
+			return -1;
+		}
+		LOGP(DTUN, LOGL_NOTICE, "GTP kernel configured\n");
+		return 0;
+	}
 
 #elif defined(__FreeBSD__) || defined (__APPLE__)
 
+	if (use_kernel) {
+		LOGP(DTUN, LOGL_ERROR, "No kernel GTP-U support in FreeBSD!\n");
+		return -1;
+	}
+
 	/* Find suitable device */
 	for (devnum = 0; devnum < 255; devnum++) {	/* TODO 255 */
 		snprintf(devname, sizeof(devname), "/dev/tun%d", devnum);
@@ -678,12 +276,16 @@ int tun_free(struct tun_t *tun)
 {
 
 	if (tun->routes) {
-		tun_delroute(tun, &tun->dstaddr, &tun->addr, &tun->netmask);
+		netdev_delroute(&tun->dstaddr.v4, &tun->addr.v4, &tun->netmask);
 	}
 
+	if (tun->fd >= 0) {
 		if (close(tun->fd)) {
 			SYS_ERR(DTUN, LOGL_ERROR, errno, "close() failed");
 		}
+	}
+
+	gtp_kernel_stop(tun->devname);
 
 	/* TODO: For solaris we need to unlink streams */
 
@@ -727,7 +329,7 @@ int tun_runscript(struct tun_t *tun, char *script)
 	char smask[TUN_ADDRSIZE];
 	int rc;
 
-	strncpy(snet, inet_ntoa(tun->addr), sizeof(snet));
+	strncpy(snet, inet_ntoa(tun->addr.v4), sizeof(snet));
 	snet[sizeof(snet) - 1] = 0;
 	strncpy(smask, inet_ntoa(tun->netmask), sizeof(smask));
 	smask[sizeof(smask) - 1] = 0;
@@ -745,79 +347,6 @@ int tun_runscript(struct tun_t *tun, char *script)
 	return 0;
 }
 
-#include <ifaddrs.h>
-
-/*! Obtain the local address of a network device
- *  \param[in] devname Target device owning the IP
- *  \param[out] prefix_list List of prefix structures to fill with each IPv4/6 and prefix length found.
- *  \param[in] prefix_size Amount of elements allowed to be fill in the prefix_list array.
- *  \param[in] flags Specify which kind of IP to look for: IP_TYPE_IPv4, IP_TYPE_IPv6_LINK, IP_TYPE_IPv6_NONLINK
- *  \returns The number of ips found following the criteria specified by flags, -1 on error.
- *
- * This function will fill prefix_list with up to prefix_size IPs following the
- * criteria specified by flags parameter. It returns the number of IPs matching
- * the criteria. As a result, the number returned can be bigger than
- * prefix_size. It can be used with prefix_size=0 to get an estimate of the size
- * needed for prefix_list.
- */
-int netdev_ip_local_get(const char *devname, struct in46_prefix *prefix_list, size_t prefix_size, int flags)
-{
-	static const uint8_t ll_prefix[] = { 0xfe,0x80, 0,0, 0,0, 0,0 };
-	struct ifaddrs *ifaddr, *ifa;
-	struct in46_addr netmask;
-	size_t count = 0;
-	bool is_ipv6_ll;
-
-	if (getifaddrs(&ifaddr) == -1) {
-		return -1;
-	}
-
-	for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
-		if (ifa->ifa_addr == NULL)
-			continue;
-
-		if (strcmp(ifa->ifa_name, devname))
-			continue;
-
-		if (ifa->ifa_addr->sa_family == AF_INET && (flags & IP_TYPE_IPv4)) {
-			struct sockaddr_in *sin4 = (struct sockaddr_in *) ifa->ifa_addr;
-			struct sockaddr_in *netmask4 = (struct sockaddr_in *) ifa->ifa_netmask;
-
-			if (count < prefix_size) {
-				netmask.len = sizeof(netmask4->sin_addr);
-				netmask.v4 = netmask4->sin_addr;
-				prefix_list[count].addr.len = sizeof(sin4->sin_addr);
-				prefix_list[count].addr.v4 = sin4->sin_addr;
-				prefix_list[count].prefixlen = in46a_netmasklen(&netmask);
-			}
-			count++;
-		}
-
-		if (ifa->ifa_addr->sa_family == AF_INET6 && (flags & IP_TYPE_IPv6)) {
-			struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) ifa->ifa_addr;
-			struct sockaddr_in6 *netmask6 = (struct sockaddr_in6 *) ifa->ifa_netmask;
-
-			is_ipv6_ll = !memcmp(sin6->sin6_addr.s6_addr, ll_prefix, sizeof(ll_prefix));
-			if ((flags & IP_TYPE_IPv6_NONLINK) && is_ipv6_ll)
-				continue;
-			if ((flags & IP_TYPE_IPv6_LINK) && !is_ipv6_ll)
-				continue;
-
-			if (count < prefix_size) {
-				netmask.len = sizeof(netmask6->sin6_addr);
-				netmask.v6 = netmask6->sin6_addr;
-				prefix_list[count].addr.len = sizeof(sin6->sin6_addr);
-				prefix_list[count].addr.v6 = sin6->sin6_addr;
-				prefix_list[count].prefixlen = in46a_netmasklen(&netmask);
-			}
-			count++;
-		}
-	}
-
-	freeifaddrs(ifaddr);
-	return count;
-}
-
 /*! Obtain the local address of the tun device.
  *  \param[in] tun Target device owning the IP
  *  \param[out] prefix_list List of prefix structures to fill with each IPv4/6 and prefix length found.

lib/tun.h

@@ -1,7 +1,7 @@
 /*
  * TUN interface functions.
  * Copyright (C) 2002, 2003 Mondru AB.
- * Copyright (C) 2017 by Harald Welte <laforge@gnumonks.org>
+ * Copyright (C) 2017-2018 by Harald Welte <laforge@gnumonks.org>
  *
  * The contents of this file may be used under the terms of the GNU
  * General Public License Version 2, provided that the above copyright
@@ -13,6 +13,7 @@
 #ifndef _TUN_H
 #define _TUN_H
 
+#include <stdbool.h>
 #include <net/if.h>
 
 #include "../lib/in46_addr.h"
@@ -20,43 +21,9 @@
 #define PACKET_MAX      8196	/* Maximum packet size we receive */
 #define TUN_SCRIPTSIZE   256
 #define TUN_ADDRSIZE     128
-#define TUN_NLBUFSIZE   1024
 
 #include "config.h"
-
-/* ipv6 ip type flags for tun_ipv6_local_get() */
-enum {
-	IP_TYPE_IPv4 = 1,
-	IP_TYPE_IPv6_LINK = 2,
-	IP_TYPE_IPv6_NONLINK = 4,
-};
-#define IP_TYPE_IPv6 (IP_TYPE_IPv6_LINK | IP_TYPE_IPv6_NONLINK)
-
-
-#ifndef HAVE_IPHDR
-struct iphdr
-  {
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-    unsigned int ihl:4;
-    unsigned int version:4;
-#elif __BYTE_ORDER == __BIG_ENDIAN
-    unsigned int version:4;
-    unsigned int ihl:4;
-#else
-# error	"Please fix <bits/endian.h>"
-#endif
-    u_int8_t tos;
-    u_int16_t tot_len;
-    u_int16_t id;
-    u_int16_t frag_off;
-    u_int8_t ttl;
-    u_int8_t protocol;
-    u_int16_t check;
-    u_int32_t saddr;
-    u_int32_t daddr;
-    /*The options start here. */
-  };
-#endif /* !HAVE_IPHDR */
+#include "netdev.h"
 
 /* ***********************************************************
  * Information storage for each tun instance
@@ -64,8 +31,8 @@ struct iphdr
 
 struct tun_t {
 	int fd;			/* File descriptor to tun interface */
-	struct in_addr addr;
-	struct in_addr dstaddr;
+	struct in46_addr addr;
+	struct in46_addr dstaddr;
 	struct in_addr netmask;
 	int addrs;		/* Number of allocated IP addresses */
 	int routes;		/* One if we allocated an automatic route */
@@ -75,19 +42,13 @@ struct tun_t {
 	void *priv;
 };
 
-extern int tun_new(struct tun_t **tun, const char *dev_name);
+extern int tun_new(struct tun_t **tun, const char *dev_name, bool use_kernel, int fd0, int fd1u);
 extern int tun_free(struct tun_t *tun);
 extern int tun_decaps(struct tun_t *this);
 extern int tun_encaps(struct tun_t *tun, void *pack, unsigned len);
 
-extern int tun_addaddr(struct tun_t *this, struct in_addr *addr,
-		       struct in_addr *dstaddr, struct in_addr *netmask);
-
-extern int tun_setaddr(struct tun_t *this, struct in46_addr *our_adr,
-		       struct in46_addr *his_adr, size_t prefixlen);
-
-int tun_addroute(struct tun_t *this, struct in_addr *dst,
-		 struct in_addr *gateway, struct in_addr *mask);
+extern int tun_addaddr(struct tun_t *this, struct in46_addr *addr,
+		       struct in46_addr *dstaddr, size_t prefixlen);
 
 extern int tun_set_cb_ind(struct tun_t *this,
 			  int (*cb_ind) (struct tun_t * tun, void *pack,
@@ -95,9 +56,6 @@ extern int tun_set_cb_ind(struct tun_t *this,
 
 extern int tun_runscript(struct tun_t *tun, char *script);
 
-int netdev_ip_local_get(const char *devname, struct in46_prefix *prefix_list,
-			size_t prefix_size, int flags);
-
 int tun_ip_local_get(const struct tun_t *tun, struct in46_prefix *prefix_list,
 		     size_t prefix_size, int flags);
 

sgsnemu/Makefile.am

@@ -5,5 +5,11 @@ AM_LDFLAGS = @EXEC_LDFLAGS@
 AM_CFLAGS = -O2 -D_GNU_SOURCE -fno-builtin -Wall -DSBINDIR='"$(sbindir)"' -ggdb $(LIBOSMOCORE_CFLAGS)
 
 sgsnemu_LDADD = @EXEC_LDADD@ -lgtp -L../gtp ../lib/libmisc.a $(LIBOSMOCORE_LIBS)
+
+if ENABLE_GTP_KERNEL
+AM_CFLAGS += -DGTP_KERNEL $(LIBGTPNL_CFLAGS)
+sgsnemu_LDADD += $(LIBGTPNL_LIBS)
+endif
+
 sgsnemu_DEPENDENCIES = ../gtp/libgtp.la ../lib/libmisc.a
 sgsnemu_SOURCES = sgsnemu.c cmdline.c cmdline.h

sgsnemu/cmdline.c

@@ -41,7 +41,7 @@ const char *gengetopt_args_info_help[] = {
 	"      --pidfile=STRING          Filename of process id file\n                                  (default=`./sgsnemu.pid')",
 	"      --statedir=STRING         Directory of nonvolatile data  (default=`./')",
 	"      --dns=STRING              DNS Server to use",
-	"  -l, --listen=STRING           Local interface",
+	"  -l, --listen=STRING           Local host",
 	"  -r, --remote=STRING           Remote host",
 	"      --contexts=INT            Number of contexts  (default=`1')",
 	"      --timelimit=INT           Exit after timelimit seconds  (default=`0')",
@@ -65,12 +65,14 @@ const char *gengetopt_args_info_help[] = {
 	"      --charging=INT            Charging characteristics  (default=`0x0800')",
 	"  -u, --uid=STRING              Login user ID  (default=`mig')",
 	"  -p, --pwd=STRING              Login password  (default=`hemmelig')",
+	"\n Mode: createif\n  any option of this mode is related to tun interface, all payload going in and\n  out  via tunN interface",
 	"      --createif                Create local network interface  (default=off)",
 	"  -n, --net=STRING              Network address for local interface",
 	"      --defaultroute            Create default route  (default=off)",
 	"      --ipup=STRING             Script to run after link-up",
 	"      --ipdown=STRING           Script to run after link-down",
 	"      --tun-device=STRING       Name of the local network interface",
+	"\n Mode: pinghost\n  generate ICMP payload inside G-PDU without setting up tun interface",
 	"      --pinghost=STRING         Ping remote host",
 	"      --pingrate=INT            Number of ping req per second  (default=`1')",
 	"      --pingsize=INT            Number of ping data bytes  (default=`56')",
@@ -168,6 +170,8 @@ void clear_given(struct gengetopt_args_info *args_info)
 	args_info->pingquiet_given = 0;
 	args_info->no_tx_gpdu_seq_given = 0;
 	args_info->pdp_type_given = 0;
+	args_info->createif_mode_counter = 0;
+	args_info->pinghost_mode_counter = 0;
 }
 
 static
@@ -290,19 +294,19 @@ void init_args_info(struct gengetopt_args_info *args_info)
 	args_info->charging_help = gengetopt_args_info_help[28];
 	args_info->uid_help = gengetopt_args_info_help[29];
 	args_info->pwd_help = gengetopt_args_info_help[30];
-	args_info->createif_help = gengetopt_args_info_help[31];
-	args_info->net_help = gengetopt_args_info_help[32];
-	args_info->defaultroute_help = gengetopt_args_info_help[33];
-	args_info->ipup_help = gengetopt_args_info_help[34];
-	args_info->ipdown_help = gengetopt_args_info_help[35];
-	args_info->tun_device_help = gengetopt_args_info_help[36];
-	args_info->pinghost_help = gengetopt_args_info_help[37];
-	args_info->pingrate_help = gengetopt_args_info_help[38];
-	args_info->pingsize_help = gengetopt_args_info_help[39];
-	args_info->pingcount_help = gengetopt_args_info_help[40];
-	args_info->pingquiet_help = gengetopt_args_info_help[41];
-	args_info->no_tx_gpdu_seq_help = gengetopt_args_info_help[42];
-	args_info->pdp_type_help = gengetopt_args_info_help[43];
+	args_info->createif_help = gengetopt_args_info_help[32];
+	args_info->net_help = gengetopt_args_info_help[33];
+	args_info->defaultroute_help = gengetopt_args_info_help[34];
+	args_info->ipup_help = gengetopt_args_info_help[35];
+	args_info->ipdown_help = gengetopt_args_info_help[36];
+	args_info->tun_device_help = gengetopt_args_info_help[37];
+	args_info->pinghost_help = gengetopt_args_info_help[39];
+	args_info->pingrate_help = gengetopt_args_info_help[40];
+	args_info->pingsize_help = gengetopt_args_info_help[41];
+	args_info->pingcount_help = gengetopt_args_info_help[42];
+	args_info->pingquiet_help = gengetopt_args_info_help[43];
+	args_info->no_tx_gpdu_seq_help = gengetopt_args_info_help[44];
+	args_info->pdp_type_help = gengetopt_args_info_help[45];
 
 }
 
@@ -361,8 +365,7 @@ void cmdline_parser_params_init(struct cmdline_parser_params *params)
 
 struct cmdline_parser_params *cmdline_parser_params_create(void)
 {
-	struct cmdline_parser_params *params =
-	    (struct cmdline_parser_params *)
+	struct cmdline_parser_params *params = (struct cmdline_parser_params *)
 	    malloc(sizeof(struct cmdline_parser_params));
 	cmdline_parser_params_init(params);
 	return params;
@@ -853,6 +856,30 @@ int update_arg(void *field, char **orig_field,
 	return 0;		/* OK */
 }
 
+static int check_modes(int given1[], const char *options1[],
+		       int given2[], const char *options2[])
+{
+	int i = 0, j = 0, errors = 0;
+
+	while (given1[i] >= 0) {
+		if (given1[i]) {
+			while (given2[j] >= 0) {
+				if (given2[j]) {
+					++errors;
+					fprintf(stderr,
+						"%s: option %s conflicts with option %s\n",
+						package_name, options1[i],
+						options2[j]);
+				}
+				++j;
+			}
+		}
+		++i;
+	}
+
+	return errors;
+}
+
 int
 cmdline_parser_internal(int argc, char **argv,
 			struct gengetopt_args_info *args_info,
@@ -976,7 +1003,7 @@ cmdline_parser_internal(int argc, char **argv,
 				goto failure;
 
 			break;
-		case 'l':	/* Local interface.  */
+		case 'l':	/* Local host.  */
 
 			if (update_arg((void *)&(args_info->listen_arg),
 				       &(args_info->listen_orig),
@@ -1073,6 +1100,7 @@ cmdline_parser_internal(int argc, char **argv,
 
 			break;
 		case 'n':	/* Network address for local interface.  */
+			args_info->createif_mode_counter += 1;
 
 			if (update_arg((void *)&(args_info->net_arg),
 				       &(args_info->net_orig),
@@ -1391,6 +1419,7 @@ cmdline_parser_internal(int argc, char **argv,
 			else if (strcmp
 				 (long_options[option_index].name,
 				  "createif") == 0) {
+				args_info->createif_mode_counter += 1;
 
 				if (update_arg
 				    ((void *)&(args_info->createif_flag), 0,
@@ -1405,6 +1434,7 @@ cmdline_parser_internal(int argc, char **argv,
 			else if (strcmp
 				 (long_options[option_index].name,
 				  "defaultroute") == 0) {
+				args_info->createif_mode_counter += 1;
 
 				if (update_arg
 				    ((void *)&(args_info->defaultroute_flag), 0,
@@ -1419,6 +1449,7 @@ cmdline_parser_internal(int argc, char **argv,
 			/* Script to run after link-up.  */
 			else if (strcmp(long_options[option_index].name, "ipup")
 				 == 0) {
+				args_info->createif_mode_counter += 1;
 
 				if (update_arg((void *)&(args_info->ipup_arg),
 					       &(args_info->ipup_orig),
@@ -1434,6 +1465,7 @@ cmdline_parser_internal(int argc, char **argv,
 			else if (strcmp
 				 (long_options[option_index].name,
 				  "ipdown") == 0) {
+				args_info->createif_mode_counter += 1;
 
 				if (update_arg((void *)&(args_info->ipdown_arg),
 					       &(args_info->ipdown_orig),
@@ -1449,6 +1481,7 @@ cmdline_parser_internal(int argc, char **argv,
 			else if (strcmp
 				 (long_options[option_index].name,
 				  "tun-device") == 0) {
+				args_info->createif_mode_counter += 1;
 
 				if (update_arg
 				    ((void *)&(args_info->tun_device_arg),
@@ -1465,6 +1498,7 @@ cmdline_parser_internal(int argc, char **argv,
 			else if (strcmp
 				 (long_options[option_index].name,
 				  "pinghost") == 0) {
+				args_info->pinghost_mode_counter += 1;
 
 				if (update_arg
 				    ((void *)&(args_info->pinghost_arg),
@@ -1481,6 +1515,7 @@ cmdline_parser_internal(int argc, char **argv,
 			else if (strcmp
 				 (long_options[option_index].name,
 				  "pingrate") == 0) {
+				args_info->pinghost_mode_counter += 1;
 
 				if (update_arg
 				    ((void *)&(args_info->pingrate_arg),
@@ -1496,6 +1531,7 @@ cmdline_parser_internal(int argc, char **argv,
 			else if (strcmp
 				 (long_options[option_index].name,
 				  "pingsize") == 0) {
+				args_info->pinghost_mode_counter += 1;
 
 				if (update_arg
 				    ((void *)&(args_info->pingsize_arg),
@@ -1512,6 +1548,7 @@ cmdline_parser_internal(int argc, char **argv,
 			else if (strcmp
 				 (long_options[option_index].name,
 				  "pingcount") == 0) {
+				args_info->pinghost_mode_counter += 1;
 
 				if (update_arg
 				    ((void *)&(args_info->pingcount_arg),
@@ -1527,6 +1564,7 @@ cmdline_parser_internal(int argc, char **argv,
 			else if (strcmp
 				 (long_options[option_index].name,
 				  "pingquiet") == 0) {
+				args_info->pinghost_mode_counter += 1;
 
 				if (update_arg
 				    ((void *)&(args_info->pingquiet_flag), 0,
@@ -1566,6 +1604,31 @@ cmdline_parser_internal(int argc, char **argv,
 		}		/* switch */
 	}			/* while */
 
+	if (args_info->createif_mode_counter
+	    && args_info->pinghost_mode_counter) {
+		int createif_given[] =
+		    { args_info->createif_given, args_info->net_given,
+			args_info->defaultroute_given, args_info->ipup_given,
+			args_info->ipdown_given, args_info->tun_device_given, -1
+		};
+		const char *createif_desc[] =
+		    { "--createif", "--net", "--defaultroute", "--ipup",
+			"--ipdown", "--tun-device", 0
+		};
+		int pinghost_given[] =
+		    { args_info->pinghost_given, args_info->pingrate_given,
+			args_info->pingsize_given, args_info->pingcount_given,
+			args_info->pingquiet_given, -1
+		};
+		const char *pinghost_desc[] =
+		    { "--pinghost", "--pingrate", "--pingsize", "--pingcount",
+			"--pingquiet", 0
+		};
+		error_occurred +=
+		    check_modes(createif_given, createif_desc, pinghost_given,
+				pinghost_desc);
+	}
+
 	if (check_required) {
 		error_occurred +=
 		    cmdline_parser_required2(args_info, argv[0],

sgsnemu/cmdline.ggo

@@ -15,6 +15,10 @@
 
 package "sgsnemu"
 
+defmode "createif"  modedesc="any option of this mode is related to tun interface, \
+all payload going in and out  via tunN interface"
+defmode "pinghost"  modedesc="generate ICMP payload inside G-PDU without setting up tun interface"
+
 option  "debug"        d "Run in debug mode"              flag   off
 
 option  "conf"         c "Read configuration file"        string no
@@ -22,7 +26,7 @@ option  "pidfile"      - "Filename of process id file"    string default="./sgsn
 option  "statedir"     - "Directory of nonvolatile data"  string default="./" no
 
 option  "dns"          - "DNS Server to use"              string no
-option  "listen"       l "Local interface"                string no
+option  "listen"       l "Local host"                     string no
 option  "remote"       r "Remote host"                    string no
 
 option  "contexts"     - "Number of contexts"             int    default="1" no
@@ -49,18 +53,18 @@ option  "charging"     - "Charging characteristics"       int    default="0x0800
 option  "uid"          u "Login user ID"                  string default="mig" no
 option  "pwd"          p "Login password"                 string default="hemmelig" no
 
-option  "createif"     - "Create local network interface" flag   off
-option  "net"          n "Network address for local interface" string dependon="createif" no
-option  "defaultroute" - "Create default route"           flag   dependon="createif" off
-option  "ipup"         - "Script to run after link-up"    string dependon="createif" no
-option  "ipdown"       - "Script to run after link-down"  string dependon="createif" no
-option  "tun-device"   - "Name of the local network interface" string dependon="createif" no
+modeoption   "createif"     - "Create local network interface" flag   off                           mode="createif"
+modeoption   "net"          n "Network address for local interface" string dependon="createif" no   mode="createif"
+modeoption   "defaultroute" - "Create default route"           flag   dependon="createif" off       mode="createif"
+modeoption   "ipup"         - "Script to run after link-up"    string dependon="createif" no        mode="createif"
+modeoption   "ipdown"       - "Script to run after link-down"  string dependon="createif" no        mode="createif"
+modeoption   "tun-device"   - "Name of the local network interface" string dependon="createif" no   mode="createif"
 
-option  "pinghost"     - "Ping remote host"               string no
-option  "pingrate"     - "Number of ping req per second"  int default="1" dependon="pinghost" no
-option  "pingsize"     - "Number of ping data bytes"      int default="56" dependon="pinghost" no
-option  "pingcount"    - "Number of ping req to send"     int default="0" dependon="pinghost" no
-option  "pingquiet"    - "Do not print ping packet info"  flag dependon="pinghost" off
+modeoption   "pinghost"     - "Ping remote host"               string no                                mode="pinghost"
+modeoption   "pingrate"     - "Number of ping req per second"  int default="1" dependon="pinghost" no   mode="pinghost"
+modeoption   "pingsize"     - "Number of ping data bytes"      int default="56" dependon="pinghost" no  mode="pinghost"
+modeoption   "pingcount"    - "Number of ping req to send"     int default="0" dependon="pinghost" no   mode="pinghost"
+modeoption   "pingquiet"    - "Do not print ping packet info"  flag dependon="pinghost" off             mode="pinghost"
 
 option  "no-tx-gpdu-seq" - "Don't transmit G-PDU sequence nums"   flag    off
 option  "pdp-type"     t "PDP Type"                       string default="v4" no typestr="(v4|v6)"

sgsnemu/cmdline.h

@@ -69,11 +69,11 @@ extern "C" {
 		const char *dns_help;
 			/**< @brief DNS Server to use help description.  */
 		char *listen_arg;
-			/**< @brief Local interface.  */
+			/**< @brief Local host.  */
 		char *listen_orig;
-			/**< @brief Local interface original value given at command line.  */
+			/**< @brief Local host original value given at command line.  */
 		const char *listen_help;
-			   /**< @brief Local interface help description.  */
+			   /**< @brief Local host help description.  */
 		char *remote_arg;
 			/**< @brief Remote host.  */
 		char *remote_orig;
@@ -370,6 +370,10 @@ extern "C" {
 		unsigned int pdp_type_given;
 				/**< @brief Whether pdp-type was given.  */
 
+		int createif_mode_counter;
+			     /**< @brief Counter for mode createif */
+		int pinghost_mode_counter;
+			     /**< @brief Counter for mode pinghost */
 	};
 
 /** @brief The additional parameters to pass to parser functions */

sgsnemu/sgsnemu.c

@@ -20,6 +20,7 @@
 #endif
 
 #include <osmocom/core/application.h>
+#include <osmocom/core/msgb.h>
 
 #include <ctype.h>
 #include <netdb.h>
@@ -79,13 +80,14 @@ struct gsn_t *gsn = NULL;	/* GSN instance */
 struct tun_t *tun = NULL;	/* TUN instance */
 int maxfd = 0;			/* For select() */
 int echoversion = 1;		/* First try this version */
+void *tall_sgsnemu_ctx;		/* root talloc ctx */
 
 /* Struct with local versions of gengetopt options */
 struct {
 	int debug;		/* Print debug messages */
 	int createif;		/* Create local network interface */
 	char *tun_dev_name;
-	struct in_addr netaddr, destaddr, net;	/* Network interface  */
+	struct in46_addr netaddr, destaddr, net;	/* Network interface  */
 	size_t prefixlen;
 	char *ipup, *ipdown;	/* Filename of scripts */
 	int defaultroute;	/* Set up default route */
@@ -291,7 +293,7 @@ static int process_options(int argc, char **argv)
 		printf("timelimit: %d\n", args_info.timelimit_arg);
 		printf("createif: %d\n", args_info.createif_flag);
 		if (args_info.tun_device_arg)
-			printf("tun-device: %d\n", args_info.tun_device_arg);
+			printf("tun-device: %s\n", args_info.tun_device_arg);
 		if (args_info.ipup_arg)
 			printf("ipup: %s\n", args_info.ipup_arg);
 		if (args_info.ipdown_arg)
@@ -873,23 +875,21 @@ static int process_options(int argc, char **argv)
 	/* net                                                          */
 	/* Store net as in_addr net and mask                            */
 	if (args_info.net_arg) {
-		struct in46_addr in46;
 		if (ippool_aton
-		    (&in46, &options.prefixlen, args_info.net_arg, 0)) {
+		    (&options.net, &options.prefixlen, args_info.net_arg, 0)) {
 			SYS_ERR(DSGSN, LOGL_ERROR, 0,
 				"Invalid network address: %s!",
 				args_info.net_arg);
 			exit(1);
 		}
-		options.net.s_addr = in46.v4.s_addr;
-		options.netaddr.s_addr = options.net.s_addr;
-		options.destaddr.s_addr = options.net.s_addr;
+		options.netaddr = options.net;
+		options.destaddr = options.net;
 
 	} else {
-		options.net.s_addr = 0;
+		memset(&options.net, 0, sizeof(options.net));
 		options.prefixlen = 0;
-		options.netaddr.s_addr = 0;
-		options.destaddr.s_addr = 0;
+		memset(&options.netaddr, 0, sizeof(options.netaddr));
+		memset(&options.destaddr, 0, sizeof(options.destaddr));
 	}
 
 	/* ipup */
@@ -1234,7 +1234,7 @@ static int create_ping(void *gsn, struct pdp_t *pdp,
 {
 
 	struct ip_ping pack;
-	uint16_t *p = (uint16_t *) & pack;
+	uint16_t v16;
 	uint8_t *p8 = (uint8_t *) & pack;
 	struct in_addr src;
 	unsigned int n;
@@ -1270,7 +1270,7 @@ static int create_ping(void *gsn, struct pdp_t *pdp,
 	pack.seq = htons(seq);
 
 	/* Generate ICMP payload */
-	p8 = (uint8_t *) & pack + CREATEPING_IP + CREATEPING_ICMP;
+	p8 = (uint8_t *) &pack + CREATEPING_IP + CREATEPING_ICMP;
 	for (n = 0; n < (datasize); n++)
 		p8[n] = n;
 
@@ -1278,11 +1278,13 @@ static int create_ping(void *gsn, struct pdp_t *pdp,
 		gettimeofday(tp, &tz);
 
 	/* Calculate IP header checksum */
-	p = (uint16_t *) & pack;
+	p8 = (uint8_t *) &pack;
 	count = CREATEPING_IP;
 	sum = 0;
 	while (count > 1) {
-		sum += *p++;
+		memcpy(&v16, p8, 2);
+		sum += v16;
+		p8 += 2;
 		count -= 2;
 	}
 	while (sum >> 16)
@@ -1292,14 +1294,16 @@ static int create_ping(void *gsn, struct pdp_t *pdp,
 	/* Calculate ICMP checksum */
 	count = CREATEPING_ICMP + datasize;	/* Length of ICMP message */
 	sum = 0;
-	p = (uint16_t *) & pack;
-	p += CREATEPING_IP / 2;
+	p8 = (uint8_t *) &pack;
+	p8 += CREATEPING_IP;
 	while (count > 1) {
-		sum += *p++;
+		memcpy(&v16, p8, 2);
+		sum += v16;
+		p8 += 2;
 		count -= 2;
 	}
 	if (count > 0)
-		sum += *(unsigned char *)p;
+		sum += *(unsigned char *)p8;
 	while (sum >> 16)
 		sum = (sum & 0xffff) + (sum >> 16);
 	pack.checksum = ~sum;
@@ -1314,8 +1318,8 @@ static int delete_context(struct pdp_t *pdp)
 	if (tun && options.ipdown)
 		tun_runscript(tun, options.ipdown);
 
-	ipdel((struct iphash_t *)pdp->peer);
-	memset(pdp->peer, 0, sizeof(struct iphash_t));	/* To be sure */
+	ipdel((struct iphash_t *)pdp->peer[0]);
+	memset(pdp->peer[0], 0, sizeof(struct iphash_t));	/* To be sure */
 
 	if (1 == options.contexts)
 		state = 5;	/* Disconnected */
@@ -1402,7 +1406,7 @@ static int create_pdp_conf(struct pdp_t *pdp, void *cbp, int cause)
 		return EOF;	/* Not what we expected */
 	}
 
-	if (in46a_from_eua(&pdp->eua, &addr)) {
+	if (in46a_from_eua(&pdp->eua, &addr) < 1) {
 		printf
 		    ("Received create PDP context response. Cause value: %d\n",
 		     cause);
@@ -1427,17 +1431,16 @@ static int create_pdp_conf(struct pdp_t *pdp, void *cbp, int cause)
 		break;
 	}
 
-	if ((options.createif) && (!options.net.s_addr)) {
+	if ((options.createif) && (!options.net.len)) {
 		size_t prefixlen = 32;
 		if (addr.len == 16)
 			prefixlen = 64;
 		/* printf("Setting up interface and routing\n"); */
-		/* FIXME: use tun_addattr() not tun_setaddr() */
-		tun_setaddr(tun, &addr, &addr, prefixlen);
+		tun_addaddr(tun, &addr, &addr, prefixlen);
 		if (options.defaultroute) {
 			struct in_addr rm;
 			rm.s_addr = 0;
-			tun_addroute(tun, &rm, &addr.v4, &rm);
+			netdev_addroute(&rm, &addr.v4, &rm);
 		}
 		if (options.ipup)
 			tun_runscript(tun, options.ipup);
@@ -1453,18 +1456,22 @@ static int create_pdp_conf(struct pdp_t *pdp, void *cbp, int cause)
 		if (!accept_ra || !forwarding)
 			printf("Could not open proc file for %s ?!?\n", tun->devname);
 		else {
-			if (!strcmp(accept_ra, "0") ||
-			    (!strcmp(forwarding, "1") && !strcmp(accept_ra, "1"))) {
-				printf("%s is %s, i.e. your tun device is not configured to accept "
-					"router advertisements; SLAAC will not suceed, please "
+			if (!strcmp(accept_ra, "0")) {
+				printf("accept_ra=0, i.e. your tun device is not configured to accept "
+					"router advertisements; SLAAC will not succeed, please "
 					"fix your setup!\n");
 			}
+			if (!strcmp(forwarding, "1") && !strcmp(accept_ra, "1")) {
+				printf("forwarding=1 and accept_ra=1, i.e. your tun device is not "
+					"configured to accept router advertisements; SLAAC will not "
+					"succeed, please fix your setup!\n");
+			}
 		}
 		free(accept_ra);
 		free(forwarding);
 	}
 
-	ipset((struct iphash_t *)pdp->peer, &addr);
+	ipset(iph, &addr);
 
 	state = 2;		/* Connected */
 
@@ -1475,6 +1482,8 @@ static int delete_pdp_conf(struct pdp_t *pdp, int cause)
 {
 	printf("Received delete PDP context response. Cause value: %d\n",
 	       cause);
+	if (pdp)
+		pdp_freepdp(pdp);
 	return 0;
 }
 
@@ -1509,8 +1518,6 @@ static int conf(int type, int cause, struct pdp_t *pdp, void *cbp)
 	case GTP_CREATE_PDP_REQ:
 		return create_pdp_conf(pdp, cbp, cause);
 	case GTP_DELETE_PDP_REQ:
-		if (cause != 128)
-			return 0;	/* Request not accepted. We don't care */
 		return delete_pdp_conf(pdp, cause);
 	default:
 		return 0;
@@ -1542,7 +1549,9 @@ int main(int argc, char **argv)
 	signal(SIGHUP,  signal_handler);
 	signal(SIGINT,  signal_handler);
 
-	osmo_init_logging(&log_info);
+	tall_sgsnemu_ctx = talloc_named_const(NULL, 0, "sgsnemu");
+	msgb_talloc_ctx_init(tall_sgsnemu_ctx, 0);
+	osmo_init_logging2(tall_sgsnemu_ctx, &log_info);
 
 	/* Process options given in configuration file and command line */
 	if (process_options(argc, argv))
@@ -1570,7 +1579,7 @@ int main(int argc, char **argv)
 	if (options.createif) {
 		printf("Setting up interface\n");
 		/* Create a tunnel interface */
-		if (tun_new((struct tun_t **)&tun, options.tun_dev_name)) {
+		if (tun_new((struct tun_t **)&tun, options.tun_dev_name, false, -1, -1)) {
 			SYS_ERR(DSGSN, LOGL_ERROR, 0,
 				"Failed to create tun");
 			exit(1);
@@ -1580,15 +1589,13 @@ int main(int argc, char **argv)
 			maxfd = tun->fd;
 	}
 
-	if ((options.createif) && (options.net.s_addr)) {
-		struct in_addr mask;
-		mask.s_addr = options.prefixlen ? (0xFFFFFFFF >> (32 - options.prefixlen)) : 0;
+	if ((options.createif) && (options.net.len)) {
 		/* printf("Setting up interface and routing\n"); */
-		tun_addaddr(tun, &options.netaddr, &options.destaddr, &mask);
+		tun_addaddr(tun, &options.netaddr, &options.destaddr, options.prefixlen);
 		if (options.defaultroute) {
 			struct in_addr rm;
 			rm.s_addr = 0;
-			tun_addroute(tun, &rm, &options.destaddr, &rm);
+			netdev_addroute(&rm, &options.destaddr.v4, &rm);
 		}
 		if (options.ipup)
 			tun_runscript(tun, options.ipup);
@@ -1615,9 +1622,9 @@ int main(int argc, char **argv)
 		/* Allocated here. */
 		/* If create context failes we have to deallocate ourselves. */
 		/* Otherwise it is deallocated by gtplib */
-		pdp_newpdp(&pdp, myimsi, options.nsapi, NULL);
+		gtp_pdp_newpdp(gsn, &pdp, myimsi, options.nsapi, NULL);
 
-		pdp->peer = &iparr[n];
+		pdp->peer[0] = &iparr[n]; /* FIXME: support v4v6, have 2 peers */
 		pdp->ipif = tun;	/* TODO */
 		iparr[n].pdp = pdp;
 
@@ -1757,8 +1764,7 @@ int main(int argc, char **argv)
 			for (n = 0; n < options.contexts; n++) {
 				/* Delete context */
 				printf("Disconnecting PDP context #%d\n", n);
-				gtp_delete_context_req(gsn, iparr[n].pdp, NULL,
-						       1);
+				gtp_delete_context_req2(gsn, iparr[n].pdp, NULL, 1);
 				if ((options.pinghost.s_addr != 0)
 				    && ntransmitted)
 					ping_finish();

tests/gtp/Makefile.am

@@ -2,18 +2,30 @@ AM_CFLAGS = -Wall -I$(top_srcdir)/include $(LIBOSMOCORE_CFLAGS) -g
 
 EXTRA_DIST = \
 	gtpie_test.ok \
+	queue_test.ok \
 	$(NULL)
 
 noinst_PROGRAMS = \
 	gtpie_test \
+	queue_test \
 	$(NULL)
 
 gtpie_test_SOURCES = \
 	gtpie_test.c \
 	$(NULL)
 
+queue_test_SOURCES = \
+	queue_test.c \
+	$(NULL)
+
 gtpie_test_LDADD = \
 	$(top_builddir)/lib/debug.o \
 	$(top_builddir)/gtp/libgtp.la \
 	$(LIBOSMOCORE_LIBS) \
 	$(NULL)
+
+queue_test_LDADD = \
+	$(top_builddir)/lib/debug.o \
+	$(top_builddir)/gtp/libgtp.la \
+	$(LIBOSMOCORE_LIBS) \
+	$(NULL)

tests/gtp/gtpie_test.c

@@ -7,6 +7,7 @@
 #include <osmocom/core/utils.h>
 #include <osmocom/core/application.h>
 #include <osmocom/core/logging.h>
+#include <osmocom/core/msgb.h>
 #include <osmocom/core/bits.h>
 
 #include "../../lib/syserr.h"
@@ -108,7 +109,9 @@ static void test_gtpie_tv8()
 
 int main(int argc, char **argv)
 {
-	osmo_init_logging(&log_info);
+	void *tall_ctx = talloc_named_const(NULL, 1, "Root context");
+	msgb_talloc_ctx_init(tall_ctx, 0);
+	osmo_init_logging2(tall_ctx, &log_info);
 	log_set_use_color(osmo_stderr_target, 0);
 	log_set_print_filename(osmo_stderr_target, 0);
 

tests/gtp/queue_test.c

@@ -0,0 +1,232 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+
+#include <osmocom/core/utils.h>
+#include <osmocom/core/application.h>
+#include <osmocom/core/logging.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/bits.h>
+
+#include "../../lib/syserr.h"
+#include "../../gtp/queue.h"
+
+static const struct qmsg_t qmsg_zero;
+
+static void queue_print(struct queue_t *queue, char* str)
+{
+	int n;
+	printf("=== [Queue %s] Next: %d First: %d Last: %d\n", str,
+		queue->next, queue->first, queue->last);
+	printf("#\tseq\tnext\tprev\ttimeout\tretrans\ttype\tcbp\n");
+	for (n = 0; n < QUEUE_SIZE; n++) {
+		if (queue->qmsga[n].state == 0) {
+			/* Nothing there, validate everything is zeroed */
+			OSMO_ASSERT(memcmp(&qmsg_zero, &queue->qmsga[n], sizeof(qmsg_zero)) == 0);
+			continue;
+		}
+		printf("%d\t%d\t%d\t%d\t%d\t%d\t%u\t%ld\n",
+		       n,
+		       queue->qmsga[n].seq,
+		       queue->qmsga[n].next,
+		       queue->qmsga[n].prev,
+		       (int)queue->qmsga[n].timeout,
+		       queue->qmsga[n].retrans,
+		       queue->qmsga[n].type,
+		       ((uintptr_t)queue->qmsga[n].cbp & 0xFFFFFFFF)
+		);
+	}
+	printf("======================================================\n");
+}
+
+static void test_queue_empty()
+{
+	printf("***** Testing %s()\n", __func__);
+	struct queue_t *queue = NULL;
+	struct qmsg_t *qmsg = NULL;
+	uint16_t seq = 23;
+	uint8_t type = 0;
+	void *cbp = NULL;
+	struct sockaddr_in peer;
+	int rc;
+
+	rc = inet_pton(AF_INET, "127.0.0.1", &(peer.sin_addr));
+	OSMO_ASSERT(rc == 1);
+
+	rc = queue_new(&queue);
+	OSMO_ASSERT(rc == 0);
+	queue_print(queue, "created");
+
+	rc = queue_getfirst(queue, &qmsg);
+	OSMO_ASSERT(rc == EOF);
+	rc = queue_seqget(queue, &qmsg, &peer, seq);
+	OSMO_ASSERT(rc == EOF);
+	rc = queue_freemsg_seq(queue, &peer, seq, &type, &cbp);
+	OSMO_ASSERT(rc==EOF);
+
+	queue_print(queue, "pre-delete");
+	rc = queue_free(queue);
+	OSMO_ASSERT(rc == 0);
+}
+
+static void test_queue_one()
+{
+	printf("***** Testing %s()\n", __func__);
+	struct queue_t *queue = NULL;
+	struct qmsg_t *qmsg = NULL, *qmsg2 = NULL;;
+	uint16_t seq = 23;
+	uint8_t type = 0;
+	void *cbp = NULL;
+	struct sockaddr_in peer, peer2;
+	int rc;
+
+	rc = inet_pton(AF_INET, "127.0.0.1", &(peer.sin_addr));
+	OSMO_ASSERT(rc == 1);
+	rc = inet_pton(AF_INET, "127.0.0.2", &(peer2.sin_addr));
+	OSMO_ASSERT(rc == 1);
+
+	rc = queue_new(&queue);
+	OSMO_ASSERT(rc == 0);
+	queue_print(queue, "created");
+
+	rc = queue_newmsg(queue, &qmsg, &peer, seq);
+	OSMO_ASSERT(rc == 0);
+	queue_print(queue, "first added");
+	qmsg->type = GTP_ECHO_REQ;
+	qmsg->cbp = (void*) 0x13243546;
+	qmsg->seq = seq;
+
+	rc = queue_getfirst(queue, &qmsg2);
+	OSMO_ASSERT(rc == 0);
+	OSMO_ASSERT(qmsg == qmsg2);
+
+	rc = queue_seqget(queue, &qmsg2, &peer, seq);
+	OSMO_ASSERT(rc == 0);
+	OSMO_ASSERT(qmsg == qmsg2);
+	rc = queue_seqget(queue, &qmsg, &peer2, seq);
+	OSMO_ASSERT(rc == EOF);
+	rc = queue_seqget(queue, &qmsg, &peer, seq + 1);
+	OSMO_ASSERT(rc == EOF);
+	queue_print(queue, "after-get");
+
+	rc = queue_back(queue, qmsg);
+	OSMO_ASSERT(rc == 0);
+	queue_print(queue, "after-back");
+
+	rc = queue_freemsg_seq(queue, &peer2, seq, &type, &cbp);
+	OSMO_ASSERT(rc == EOF);
+	rc = queue_freemsg_seq(queue, &peer, seq + 1, &type, &cbp);
+	OSMO_ASSERT(rc == EOF);
+	queue_print(queue, "pree-freemsg");
+	rc = queue_freemsg_seq(queue, &peer, seq, &type, &cbp);
+	OSMO_ASSERT(rc == 0);
+	OSMO_ASSERT(type == GTP_ECHO_REQ);
+	OSMO_ASSERT(cbp == (void*)0x13243546);
+
+	queue_print(queue, "pre-delete");
+	rc = queue_free(queue);
+	OSMO_ASSERT(rc == 0);
+}
+
+#define newmsg_fill(queue, qmsg_ptr, peer_ptr, seq) \
+	do { \
+		int rc = queue_newmsg(queue, &(qmsg_ptr), peer_ptr, seq); \
+		OSMO_ASSERT(rc == 0); \
+		OSMO_ASSERT(qmsg_ptr); \
+		qmsg_ptr->type = GTP_CREATE_PDP_REQ; \
+		qmsg_ptr->cbp = (void*)(uintptr_t)seq; \
+	} while (0);
+
+#define freemsg_verify(seq, type, cbp) \
+	do { \
+		OSMO_ASSERT(type == GTP_CREATE_PDP_REQ); \
+		OSMO_ASSERT(cbp == (void*)(uintptr_t)seq); \
+	} while (0);
+
+static void test_queue_full()
+{
+	/* queue_newmsg until we receive EOF. Try moving back then. */
+	printf("***** Testing %s()\n", __func__);
+	struct queue_t *queue = NULL;
+	struct qmsg_t *qmsg = NULL;
+	uint8_t type = 0;
+	void *cbp = NULL;
+	struct sockaddr_in peer;
+	int rc;
+	int i;
+
+	rc = inet_pton(AF_INET, "127.0.0.1", &(peer.sin_addr));
+	OSMO_ASSERT(rc == 1);
+
+	rc = queue_new(&queue);
+	OSMO_ASSERT(rc == 0);
+	queue_print(queue, "created");
+
+	for (i = 0; i < QUEUE_SIZE - 1; i++) {
+		newmsg_fill(queue, qmsg, &peer, i);
+	}
+	queue_print(queue, "after-fill");
+
+	/* There's one slot left at the end, let's use first()->back() */
+	rc = queue_getfirst(queue, &qmsg);
+	OSMO_ASSERT(rc == 0);
+	rc = queue_back(queue, qmsg);
+	OSMO_ASSERT(rc == 0);
+	queue_print(queue, "after-back");
+
+	/* Now let's fill last empty slot */
+	newmsg_fill(queue, qmsg, &peer, QUEUE_SIZE - 1);
+	queue_print(queue, "after-full");
+
+	/* queue is now full, it should fail */
+	rc = queue_newmsg(queue, &qmsg, &peer, QUEUE_SIZE);
+	OSMO_ASSERT(rc == EOF);
+	queue_print(queue, "after-failing-full");
+
+	/* Remove 1before-last msg (the one moved back) and make sure we can
+	   re-add it at the end of the list */
+	rc = queue_seqget(queue, &qmsg, &peer, 0);
+	OSMO_ASSERT(rc == 0);
+	rc = queue_freemsg(queue, qmsg);
+	queue_print(queue, "after-freeing-0");
+	OSMO_ASSERT(rc == 0);
+	/* Now let's fill last empty slot which should be at the end */
+	newmsg_fill(queue, qmsg, &peer, 0);
+	queue_print(queue, "after-refilling-0");
+
+	/* Now free first half seq set in increasing order */
+	for (i = 0; i < QUEUE_SIZE / 2; i++) {
+		rc = queue_freemsg_seq(queue, &peer, i, &type, &cbp);
+		OSMO_ASSERT(rc == 0);
+		freemsg_verify(i, type, cbp);
+	}
+	queue_print(queue, "after-first-half-free");
+
+	/* Now free second half seq set in decreasing order */
+	for (i = QUEUE_SIZE - 1; i >= QUEUE_SIZE / 2; i--) {
+		rc = queue_freemsg_seq(queue, &peer, i, &type, &cbp);
+		OSMO_ASSERT(rc == 0);
+		freemsg_verify(i, type, cbp);
+	}
+	queue_print(queue, "after-second-half-free");
+
+	rc = queue_free(queue);
+	OSMO_ASSERT(rc == 0);
+}
+
+int main(int argc, char **argv)
+{
+	void *tall_ctx = talloc_named_const(NULL, 1, "Root context");
+	msgb_talloc_ctx_init(tall_ctx, 0);
+	osmo_init_logging2(tall_ctx, &log_info);
+	log_set_use_color(osmo_stderr_target, 0);
+	log_set_print_filename(osmo_stderr_target, 0);
+
+	test_queue_empty();
+	test_queue_one();
+	test_queue_full();
+
+	return 0;
+}

tests/lib/Makefile.am

@@ -1,7 +1,11 @@
 AM_CFLAGS = -Wall -I$(top_srcdir)/include $(LIBOSMOCORE_CFLAGS) -g
 
-EXTRA_DIST = ippool_test.ok ippool_test.err \
-	     in46a_test.ok
+EXTRA_DIST = ippool_test.ok \
+	     ippool_test.err \
+	     ippool_v6_test.ok \
+	     ippool_v6_test.err \
+	     in46a_test.ok \
+	     in46a_v6_test.ok
 
 noinst_PROGRAMS = ippool_test in46a_test
 

tests/lib/in46a_test.c

@@ -10,6 +10,7 @@
 #include <osmocom/core/utils.h>
 #include <osmocom/core/application.h>
 #include <osmocom/core/logging.h>
+#include <osmocom/core/msgb.h>
 #include <osmocom/core/bits.h>
 
 #include "../../lib/in46_addr.h"
@@ -20,41 +21,24 @@ static const struct in46_addr g_ia4 = {
 	.v4.s_addr = 0x0d0c0b0a,
 };
 
-static const struct in46_addr g_ia6 = {
-	.len = 16,
-	.v6.s6_addr = { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 },
-};
-
 static void test_in46a_to_af(void)
 {
-	struct in46_addr ia;
-
-	printf("Testing in46a_to_af()\n");
+	printf("Testing in46a_to_af() with IPv4 addresses\n");
 
 	OSMO_ASSERT(in46a_to_af(&g_ia4) == AF_INET);
-	OSMO_ASSERT(in46a_to_af(&g_ia6) == AF_INET6);
-
-	ia.len = 8;
-	OSMO_ASSERT(in46a_to_af(&ia) == AF_INET6);
 }
 
 static void test_in46a_to_sas(void)
 {
 	struct sockaddr_storage ss;
 	struct sockaddr_in *sin = (struct sockaddr_in *) &ss;
-	struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) &ss;
 
-	printf("Testing in46a_to_sas()\n");
+	printf("Testing in46a_to_sas() with IPv4 addresses\n");
 
 	memset(&ss, 0, sizeof(ss));
 	OSMO_ASSERT(in46a_to_sas(&ss, &g_ia4) == 0);
 	OSMO_ASSERT(sin->sin_family == AF_INET);
 	OSMO_ASSERT(sin->sin_addr.s_addr == g_ia4.v4.s_addr);
-
-	memset(&ss, 0, sizeof(ss));
-	OSMO_ASSERT(in46a_to_sas(&ss, &g_ia6) == 0);
-	OSMO_ASSERT(sin6->sin6_family == AF_INET6);
-	OSMO_ASSERT(!memcmp(&sin6->sin6_addr, &g_ia6.v6, sizeof(sin6->sin6_addr)));
 }
 
 static void test_in46a_ntop(void)
@@ -63,7 +47,7 @@ static void test_in46a_ntop(void)
 	char buf[256];
 	const char *res;
 
-	printf("Testing in46a_ntop()\n");
+	printf("Testing in46a_ntop() with IPv4 addresses\n");
 
 	res = in46a_ntop(NULL, buf, sizeof(buf));
 	OSMO_ASSERT(res && !strcmp(res, "UNDEFINED"));
@@ -79,10 +63,6 @@ static void test_in46a_ntop(void)
 	res = in46a_ntop(&ia, buf, sizeof(buf));
 	OSMO_ASSERT(res && !strcmp(res, "1.2.3.4"));
 	printf("res = %s\n", res);
-
-	res = in46a_ntop(&g_ia6, buf, sizeof(buf));
-	OSMO_ASSERT(res && !strcmp(res, "102:304:506:708:90a:b0c:d0e:f10"));
-	printf("res = %s\n", res);
 }
 
 static void test_in46p_ntoa(void)
@@ -101,21 +81,14 @@ static void test_in46a_equal(void)
 {
 	struct in46_addr b;
 
-	printf("Testing in46a_equal()\n");
+	printf("Testing in46a_equal() with IPv4 addresses\n");
 
 	memset(&b, 0xff, sizeof(b));
 	b.len = g_ia4.len;
 	b.v4.s_addr = g_ia4.v4.s_addr;
 	OSMO_ASSERT(in46a_equal(&g_ia4, &b));
-
-	memset(&b, 0xff, sizeof(b));
-	b.len = g_ia6.len;
-	b.v6 = g_ia6.v6;
-	OSMO_ASSERT(in46a_equal(&g_ia6, &b));
-
 }
 
-
 static int log_in46a_within_mask(const struct in46_addr *addr, const struct in46_addr *net,
 				 size_t prefixlen)
 {
@@ -134,7 +107,7 @@ static void test_in46a_within_mask(void)
 {
 	struct in46_addr addr, mask;
 
-	printf("Testing in46a_within_mask()\n");
+	printf("Testing in46a_within_mask() with IPv4 addresses\n");
 
 	addr = g_ia4;
 	mask = g_ia4;
@@ -155,13 +128,9 @@ static void test_in46a_within_mask(void)
 
 static void test_in46a_to_eua(void)
 {
-	const struct in46_addr ia_v6_8 = {
-		.len = 8,
-		.v6.s6_addr = { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 },
-	};
 	struct ul66_t eua;
 
-	printf("testing in46a_to_eua()\n");
+	printf("testing in46a_to_eua() with IPv4 addresses\n");
 
 #if 0	/* triggers assert in current implementation */
 	const struct in46_addr ia_invalid = { .len = 3, };
@@ -169,22 +138,10 @@ static void test_in46a_to_eua(void)
 #endif
 
 	/* IPv4 address */
-	OSMO_ASSERT(in46a_to_eua(&g_ia4, &eua) == 0);
+	OSMO_ASSERT(in46a_to_eua(&g_ia4, 1, &eua) == 0);
 	OSMO_ASSERT(eua.v[0] == PDP_EUA_ORG_IETF);
 	OSMO_ASSERT(eua.v[1] == PDP_EUA_TYPE_v4);
 	OSMO_ASSERT(osmo_load32le(&eua.v[2]) == g_ia4.v4.s_addr);
-
-	/* IPv6 address */
-	OSMO_ASSERT(in46a_to_eua(&g_ia6, &eua) == 0);
-	OSMO_ASSERT(eua.v[0] == PDP_EUA_ORG_IETF);
-	OSMO_ASSERT(eua.v[1] == PDP_EUA_TYPE_v6);
-	OSMO_ASSERT(!memcmp(&eua.v[2], &g_ia6.v6, 16));
-
-	/* IPv6 address with prefix / length 8 */
-	OSMO_ASSERT(in46a_to_eua(&ia_v6_8, &eua) == 0);
-	OSMO_ASSERT(eua.v[0] == PDP_EUA_ORG_IETF);
-	OSMO_ASSERT(eua.v[1] == PDP_EUA_TYPE_v6);
-	OSMO_ASSERT(!memcmp(&eua.v[2], &ia_v6_8.v6, 16));
 }
 
 static void test_in46a_from_eua(void)
@@ -193,16 +150,12 @@ static void test_in46a_from_eua(void)
 	struct ul66_t eua;
 	const uint8_t v4_unspec[] = { PDP_EUA_ORG_IETF, PDP_EUA_TYPE_v4 };
 	const uint8_t v4_spec[] = { PDP_EUA_ORG_IETF, PDP_EUA_TYPE_v4, 1,2,3,4 };
-	const uint8_t v6_unspec[] = { PDP_EUA_ORG_IETF, PDP_EUA_TYPE_v6 };
-	const uint8_t v6_spec[] = { PDP_EUA_ORG_IETF, PDP_EUA_TYPE_v6,
-				    1,2,3,4,5,6,7,8,9,0xa,0xb,0xc,0xd,0xe,0xf,0x10 };
-
 	memset(&eua, 0, sizeof(eua));
 
-	printf("Testing in46a_from_eua()\n");
+	printf("Testing in46a_from_eua() with IPv4 addresses\n");
 
 	/* default: v4 unspec */
-	OSMO_ASSERT(in46a_from_eua(&eua, &ia) == 0);
+	OSMO_ASSERT(in46a_from_eua(&eua, &ia) == 1);
 	OSMO_ASSERT(ia.len == 4);
 	OSMO_ASSERT(ia.v4.s_addr == 0);
 
@@ -221,30 +174,16 @@ static void test_in46a_from_eua(void)
 	/* unspecified V4 */
 	memcpy(eua.v, v4_unspec, sizeof(v4_unspec));
 	eua.l = sizeof(v4_unspec);
-	OSMO_ASSERT(in46a_from_eua(&eua, &ia) == 0);
+	OSMO_ASSERT(in46a_from_eua(&eua, &ia) == 1);
 	OSMO_ASSERT(ia.len == 4);
 	OSMO_ASSERT(ia.v4.s_addr == 0);
 
 	/* specified V4 */
 	memcpy(eua.v, v4_spec, sizeof(v4_spec));
 	eua.l = sizeof(v4_spec);
-	OSMO_ASSERT(in46a_from_eua(&eua, &ia) == 0);
+	OSMO_ASSERT(in46a_from_eua(&eua, &ia) == 1);
 	OSMO_ASSERT(ia.len == 4);
 	OSMO_ASSERT(ia.v4.s_addr == htonl(0x01020304));
-
-	/* unspecified V6 */
-	memcpy(eua.v, v6_unspec, sizeof(v6_unspec));
-	eua.l = sizeof(v6_unspec);
-	OSMO_ASSERT(in46a_from_eua(&eua, &ia) == 0);
-	OSMO_ASSERT(ia.len == 16);
-	OSMO_ASSERT(IN6_IS_ADDR_UNSPECIFIED(&ia.v6));
-
-	/* specified V6 */
-	memcpy(eua.v, v6_spec, sizeof(v6_spec));
-	eua.l = sizeof(v6_spec);
-	OSMO_ASSERT(in46a_from_eua(&eua, &ia) == 0);
-	OSMO_ASSERT(ia.len == 16);
-	OSMO_ASSERT(!memcmp(&ia.v6, v6_spec+2, ia.len));
 }
 
 static void test_in46a_netmasklen(void)
@@ -274,7 +213,188 @@ static void test_in46a_netmasklen(void)
 	netmask.v4.s_addr = 0x00000000;
 	len = in46a_netmasklen(&netmask);
 	OSMO_ASSERT(len == 0);
+}
 
+/* IPv6 specific tests */
+
+static const struct in46_addr g_ia6 = {
+	.len = 16,
+	.v6.s6_addr = { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 },
+};
+
+static void test_in46a_to_af_v6(void)
+{
+	struct in46_addr ia;
+
+	printf("Testing in46a_to_af() with IPv6 addresses\n");
+
+	OSMO_ASSERT(in46a_to_af(&g_ia6) == AF_INET6);
+
+	ia.len = 8;
+	OSMO_ASSERT(in46a_to_af(&ia) == AF_INET6);
+}
+
+static void test_in46a_to_sas_v6(void)
+{
+	struct sockaddr_storage ss;
+	struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) &ss;
+
+	printf("Testing in46a_to_sas() with IPv6 addresses\n");
+
+	memset(&ss, 0, sizeof(ss));
+	OSMO_ASSERT(in46a_to_sas(&ss, &g_ia6) == 0);
+	OSMO_ASSERT(sin6->sin6_family == AF_INET6);
+	OSMO_ASSERT(!memcmp(&sin6->sin6_addr, &g_ia6.v6, sizeof(sin6->sin6_addr)));
+}
+
+static void test_in46a_ntop_v6(void)
+{
+	char buf[256];
+	const char *res;
+
+	printf("Testing in46a_ntop() with IPv6 addresses\n");
+
+	res = in46a_ntop(&g_ia6, buf, sizeof(buf));
+	OSMO_ASSERT(res && !strcmp(res, "102:304:506:708:90a:b0c:d0e:f10"));
+	printf("res = %s\n", res);
+}
+
+static void test_in46a_equal_v6(void)
+{
+	struct in46_addr b;
+
+	printf("Testing in46a_equal() with IPv6 addresses\n");
+
+	memset(&b, 0xff, sizeof(b));
+	b.len = g_ia6.len;
+	b.v6 = g_ia6.v6;
+	OSMO_ASSERT(in46a_equal(&g_ia6, &b));
+}
+
+static void test_in46a_to_eua_v6(void)
+{
+	const struct in46_addr ia_v6_8 = {
+		.len = 8,
+		.v6.s6_addr = { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 },
+	};
+	struct ul66_t eua;
+
+	printf("Testing in46a_to_eua() with IPv6 addresses\n");
+
+	/* IPv6 address */
+	OSMO_ASSERT(in46a_to_eua(&g_ia6, 1, &eua) == 0);
+	OSMO_ASSERT(eua.v[0] == PDP_EUA_ORG_IETF);
+	OSMO_ASSERT(eua.v[1] == PDP_EUA_TYPE_v6);
+	OSMO_ASSERT(!memcmp(&eua.v[2], &g_ia6.v6, 16));
+
+	/* IPv6 address with prefix / length 8 */
+	OSMO_ASSERT(in46a_to_eua(&ia_v6_8, 1, &eua) == 0);
+	OSMO_ASSERT(eua.v[0] == PDP_EUA_ORG_IETF);
+	OSMO_ASSERT(eua.v[1] == PDP_EUA_TYPE_v6);
+	OSMO_ASSERT(!memcmp(&eua.v[2], &ia_v6_8.v6, 16));
+}
+
+static void test_in46a_to_eua_v4v6() {
+	const struct in46_addr ia_v4v6[2] = {
+		{
+		.len = 16,
+		.v6.s6_addr = { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 },
+		},
+		{
+		.len = 4,
+		.v4.s_addr = 0x0d0c0b0a,
+		}
+	};
+	struct ul66_t eua;
+	printf("Testing in46a_to_eua() with IPv4v6 addresses\n");
+
+	/* IPv4 address */
+	OSMO_ASSERT(in46a_to_eua(ia_v4v6, 2, &eua) == 0);
+	OSMO_ASSERT(eua.v[0] == PDP_EUA_ORG_IETF);
+	OSMO_ASSERT(eua.v[1] == PDP_EUA_TYPE_v4v6);
+	OSMO_ASSERT(osmo_load32le(&eua.v[2]) == g_ia4.v4.s_addr);
+	OSMO_ASSERT(!memcmp(&eua.v[6], &g_ia6.v6, 16));
+}
+
+static void test_in46a_from_eua_v6(void)
+{
+	struct in46_addr ia;
+	struct ul66_t eua;
+	const uint8_t v6_unspec[] = { PDP_EUA_ORG_IETF, PDP_EUA_TYPE_v6 };
+	const uint8_t v6_spec[] = { PDP_EUA_ORG_IETF, PDP_EUA_TYPE_v6,
+				    1,2,3,4,5,6,7,8,9,0xa,0xb,0xc,0xd,0xe,0xf,0x10 };
+
+	memset(&eua, 0, sizeof(eua));
+
+	printf("Testing in46a_from_eua() with IPv6 addresses\n");
+
+	/* unspecified V6 */
+	memcpy(eua.v, v6_unspec, sizeof(v6_unspec));
+	eua.l = sizeof(v6_unspec);
+	OSMO_ASSERT(in46a_from_eua(&eua, &ia) == 1);
+	OSMO_ASSERT(ia.len == 16);
+	OSMO_ASSERT(IN6_IS_ADDR_UNSPECIFIED(&ia.v6));
+
+	/* specified V6 */
+	memcpy(eua.v, v6_spec, sizeof(v6_spec));
+	eua.l = sizeof(v6_spec);
+	OSMO_ASSERT(in46a_from_eua(&eua, &ia) == 1);
+	OSMO_ASSERT(ia.len == 16);
+	OSMO_ASSERT(!memcmp(&ia.v6, v6_spec+2, ia.len));
+}
+
+static void test_in46a_from_eua_v4v6(void) {
+	struct in46_addr ia[2];
+	struct ul66_t eua;
+	const uint8_t v4_unspec_v6_unspec[] = { PDP_EUA_ORG_IETF, PDP_EUA_TYPE_v4v6 };
+	const uint8_t v4_spec_v6_unspec[] = { PDP_EUA_ORG_IETF, PDP_EUA_TYPE_v4v6, 1,2,3,4 };
+	const uint8_t v4_unspec_v6_spec[] = { PDP_EUA_ORG_IETF, PDP_EUA_TYPE_v4v6, 1,2,3,4,5,6,7,8,9,0xa,0xb,0xc,0xd,0xe,0xf,0x10 };
+	const uint8_t v4_spec_v6_spec[] = { PDP_EUA_ORG_IETF, PDP_EUA_TYPE_v4v6, 1,2,3,4, 1,2,3,4,5,6,7,8,9,0xa,0xb,0xc,0xd,0xe,0xf,0x10 };
+
+	memset(&eua, 0, sizeof(eua));
+
+	printf("Testing in46a_from_eua() with IPv4v6 addresses\n");
+
+	/* unspecified V4 & V6 */
+	memcpy(eua.v, v4_unspec_v6_unspec, sizeof(v4_unspec_v6_unspec));
+	eua.l = sizeof(v4_unspec_v6_unspec);
+	OSMO_ASSERT(in46a_from_eua(&eua, ia) == 2);
+	OSMO_ASSERT(ia[0].len == 4);
+	OSMO_ASSERT(ia[1].len == 16);
+	OSMO_ASSERT(ia[0].v4.s_addr == 0);
+	OSMO_ASSERT(IN6_IS_ADDR_UNSPECIFIED(&ia[1].v6));
+
+	/* specified V4, unspecified V6 */
+	memcpy(eua.v, v4_spec_v6_unspec, sizeof(v4_spec_v6_unspec));
+	eua.l = sizeof(v4_spec_v6_unspec);
+	OSMO_ASSERT(in46a_from_eua(&eua, ia) == 2);
+	OSMO_ASSERT(ia[0].len == 4);
+	OSMO_ASSERT(ia[1].len == 16);
+	OSMO_ASSERT(ia[0].v4.s_addr == htonl(0x01020304));
+	OSMO_ASSERT(IN6_IS_ADDR_UNSPECIFIED(&ia[1].v6));
+
+	/* unspecified V4, specified V6 */
+	memcpy(eua.v, v4_unspec_v6_spec, sizeof(v4_unspec_v6_spec));
+	eua.l = sizeof(v4_unspec_v6_spec);
+	OSMO_ASSERT(in46a_from_eua(&eua, ia) == 2);
+	OSMO_ASSERT(ia[0].len == 4);
+	OSMO_ASSERT(ia[1].len == 16);
+	OSMO_ASSERT(ia[0].v4.s_addr == 0);
+	OSMO_ASSERT(!memcmp(&ia[1].v6, v4_unspec_v6_spec+2, ia[1].len));
+
+	/* specified V4, specified V6 */
+	memcpy(eua.v, v4_spec_v6_spec, sizeof(v4_spec_v6_spec));
+	eua.l = sizeof(v4_spec_v6_spec);
+	OSMO_ASSERT(in46a_from_eua(&eua, ia) == 2);
+	OSMO_ASSERT(ia[0].len == 4);
+	OSMO_ASSERT(ia[1].len == 16);
+	OSMO_ASSERT(ia[0].v4.s_addr == htonl(0x01020304));
+	OSMO_ASSERT(!memcmp(&ia[1].v6, v4_spec_v6_spec+6, ia[1].len));
+}
+
+static void test_in46a_netmasklen_v6(void)
+{
+	unsigned int len;
 	printf("Testing in46a_netmasklen() with IPv6 addresses\n");
 	const struct in46_addr netmaskA = {
 		.len = 16,
@@ -307,12 +427,15 @@ static void test_in46a_netmasklen(void)
 
 int main(int argc, char **argv)
 {
-	osmo_init_logging(&log_info);
+	void *tall_ctx = talloc_named_const(NULL, 1, "Root context");
+	msgb_talloc_ctx_init(tall_ctx, 0);
+	osmo_init_logging2(tall_ctx, &log_info);
 	log_set_use_color(osmo_stderr_target, 0);
 	log_set_print_filename(osmo_stderr_target, 0);
 
 	srand(time(NULL));
 
+	if (argc < 2 || strcmp(argv[1], "-v6")) {
 		test_in46a_to_af();
 		test_in46a_to_sas();
 		test_in46a_ntop();
@@ -322,5 +445,16 @@ int main(int argc, char **argv)
 		test_in46a_to_eua();
 		test_in46a_from_eua();
 		test_in46a_netmasklen();
+	} else {
+		test_in46a_to_af_v6();
+		test_in46a_to_sas_v6();
+		test_in46a_ntop_v6();
+		test_in46a_equal_v6();
+		test_in46a_to_eua_v6();
+		test_in46a_from_eua_v6();
+		test_in46a_to_eua_v4v6();
+		test_in46a_from_eua_v4v6();
+		test_in46a_netmasklen_v6();
+	}
 	return 0;
 }

tests/lib/in46a_test.ok

@@ -1,19 +1,17 @@
-Testing in46a_to_af()
-Testing in46a_to_sas()
-Testing in46a_ntop()
+Testing in46a_to_af() with IPv4 addresses
+Testing in46a_to_sas() with IPv4 addresses
+Testing in46a_ntop() with IPv4 addresses
 res = UNDEFINED
 res = UNDEFINED
 res = 1.2.3.4
-res = 102:304:506:708:90a:b0c:d0e:f10
 in46p_ntoa() returns 16.32.48.0/24
-Testing in46a_equal()
-Testing in46a_within_mask()
+Testing in46a_equal() with IPv4 addresses
+Testing in46a_within_mask() with IPv4 addresses
 in46a_within_mask(10.11.12.13, 10.11.12.13, 32) = 1
 in46a_within_mask(10.11.12.13, 10.11.12.12, 30) = 1
 in46a_within_mask(10.11.12.13, 10.8.0.0, 13) = 1
 in46a_within_mask(10.11.12.14, 10.11.12.13, 32) = 0
 in46a_within_mask(10.11.12.14, 10.11.12.12, 30) = 1
-testing in46a_to_eua()
-Testing in46a_from_eua()
+testing in46a_to_eua() with IPv4 addresses
+Testing in46a_from_eua() with IPv4 addresses
 Testing in46a_netmasklen() with IPv4 addresses
-Testing in46a_netmasklen() with IPv6 addresses

tests/lib/in46a_v6_test.ok

@@ -0,0 +1,10 @@
+Testing in46a_to_af() with IPv6 addresses
+Testing in46a_to_sas() with IPv6 addresses
+Testing in46a_ntop() with IPv6 addresses
+res = 102:304:506:708:90a:b0c:d0e:f10
+Testing in46a_equal() with IPv6 addresses
+Testing in46a_to_eua() with IPv6 addresses
+Testing in46a_from_eua() with IPv6 addresses
+Testing in46a_to_eua() with IPv4v6 addresses
+Testing in46a_from_eua() with IPv4v6 addresses
+Testing in46a_netmasklen() with IPv6 addresses

tests/lib/ippool_test.c

@@ -7,6 +7,7 @@
 #include <osmocom/core/utils.h>
 #include <osmocom/core/application.h>
 #include <osmocom/core/logging.h>
+#include <osmocom/core/msgb.h>
 
 #include "../../lib/in46_addr.h"
 #include "../../lib/ippool.h"
@@ -113,22 +114,31 @@ static void test_pool_sizes(void)
 	/* 65534 addresses [0.1..255.254] */
 	test_pool_size("192.168.0.0/16", IPPOOL_NONETWORK | IPPOOL_NOBROADCAST, NULL, 0, 65534);
 
-	/* 256 prefixes of /64 each */
-	test_pool_size("2001:DB8::/56", 0, NULL, 0, 256);
-
 	/* 253 addresses [1..254] & exclude 192.168.23.1/24 */
 	char *blacklist[] = {"176.16.222.10/24", "192.168.23.1/24", "192.168.38.2/24"};
 	test_pool_size("192.168.23.0/24", IPPOOL_NONETWORK | IPPOOL_NOBROADCAST, blacklist, 3, 253);
 }
 
+static void test_pool_sizes_v6(void)
+{
+	/* 256 prefixes of /64 each */
+	test_pool_size("2001:DB8::/56", 0, NULL, 0, 256);
+}
+
 int main(int argc, char **argv)
 {
-	osmo_init_logging(&log_info);
+	void *tall_ctx = talloc_named_const(NULL, 1, "Root context");
+	msgb_talloc_ctx_init(tall_ctx, 0);
+	osmo_init_logging2(tall_ctx, &log_info);
 	log_set_use_color(osmo_stderr_target, 0);
 	log_set_print_filename(osmo_stderr_target, 0);
 
 	srand(time(NULL));
 
+	if (argc < 2 || strcmp(argv[1], "-v6")) {
 		test_pool_sizes();
+	} else {
+		test_pool_sizes_v6();
+	}
 	return 0;
 }

tests/lib/ippool_test.err

@@ -8,5 +8,3 @@ No more IP addresses available
 No more IP addresses available
 No more IP addresses available
 No more IP addresses available
-No more IP addresses available
-No more IP addresses available

tests/lib/ippool_test.ok

@@ -66301,263 +66301,6 @@ allocated address 192.168.255.251
 allocated address 192.168.255.252
 allocated address 192.168.255.253
 allocated address 192.168.255.254
-testing pool for prefix 2001:DB8::/56, flags=0x0, blacklist_size=0, expected_size=256
-allocated address 2001:db8::
-allocated address 2001:db8:0:1::
-allocated address 2001:db8:0:2::
-allocated address 2001:db8:0:3::
-allocated address 2001:db8:0:4::
-allocated address 2001:db8:0:5::
-allocated address 2001:db8:0:6::
-allocated address 2001:db8:0:7::
-allocated address 2001:db8:0:8::
-allocated address 2001:db8:0:9::
-allocated address 2001:db8:0:a::
-allocated address 2001:db8:0:b::
-allocated address 2001:db8:0:c::
-allocated address 2001:db8:0:d::
-allocated address 2001:db8:0:e::
-allocated address 2001:db8:0:f::
-allocated address 2001:db8:0:10::
-allocated address 2001:db8:0:11::
-allocated address 2001:db8:0:12::
-allocated address 2001:db8:0:13::
-allocated address 2001:db8:0:14::
-allocated address 2001:db8:0:15::
-allocated address 2001:db8:0:16::
-allocated address 2001:db8:0:17::
-allocated address 2001:db8:0:18::
-allocated address 2001:db8:0:19::
-allocated address 2001:db8:0:1a::
-allocated address 2001:db8:0:1b::
-allocated address 2001:db8:0:1c::
-allocated address 2001:db8:0:1d::
-allocated address 2001:db8:0:1e::
-allocated address 2001:db8:0:1f::
-allocated address 2001:db8:0:20::
-allocated address 2001:db8:0:21::
-allocated address 2001:db8:0:22::
-allocated address 2001:db8:0:23::
-allocated address 2001:db8:0:24::
-allocated address 2001:db8:0:25::
-allocated address 2001:db8:0:26::
-allocated address 2001:db8:0:27::
-allocated address 2001:db8:0:28::
-allocated address 2001:db8:0:29::
-allocated address 2001:db8:0:2a::
-allocated address 2001:db8:0:2b::
-allocated address 2001:db8:0:2c::
-allocated address 2001:db8:0:2d::
-allocated address 2001:db8:0:2e::
-allocated address 2001:db8:0:2f::
-allocated address 2001:db8:0:30::
-allocated address 2001:db8:0:31::
-allocated address 2001:db8:0:32::
-allocated address 2001:db8:0:33::
-allocated address 2001:db8:0:34::
-allocated address 2001:db8:0:35::
-allocated address 2001:db8:0:36::
-allocated address 2001:db8:0:37::
-allocated address 2001:db8:0:38::
-allocated address 2001:db8:0:39::
-allocated address 2001:db8:0:3a::
-allocated address 2001:db8:0:3b::
-allocated address 2001:db8:0:3c::
-allocated address 2001:db8:0:3d::
-allocated address 2001:db8:0:3e::
-allocated address 2001:db8:0:3f::
-allocated address 2001:db8:0:40::
-allocated address 2001:db8:0:41::
-allocated address 2001:db8:0:42::
-allocated address 2001:db8:0:43::
-allocated address 2001:db8:0:44::
-allocated address 2001:db8:0:45::
-allocated address 2001:db8:0:46::
-allocated address 2001:db8:0:47::
-allocated address 2001:db8:0:48::
-allocated address 2001:db8:0:49::
-allocated address 2001:db8:0:4a::
-allocated address 2001:db8:0:4b::
-allocated address 2001:db8:0:4c::
-allocated address 2001:db8:0:4d::
-allocated address 2001:db8:0:4e::
-allocated address 2001:db8:0:4f::
-allocated address 2001:db8:0:50::
-allocated address 2001:db8:0:51::
-allocated address 2001:db8:0:52::
-allocated address 2001:db8:0:53::
-allocated address 2001:db8:0:54::
-allocated address 2001:db8:0:55::
-allocated address 2001:db8:0:56::
-allocated address 2001:db8:0:57::
-allocated address 2001:db8:0:58::
-allocated address 2001:db8:0:59::
-allocated address 2001:db8:0:5a::
-allocated address 2001:db8:0:5b::
-allocated address 2001:db8:0:5c::
-allocated address 2001:db8:0:5d::
-allocated address 2001:db8:0:5e::
-allocated address 2001:db8:0:5f::
-allocated address 2001:db8:0:60::
-allocated address 2001:db8:0:61::
-allocated address 2001:db8:0:62::
-allocated address 2001:db8:0:63::
-allocated address 2001:db8:0:64::
-allocated address 2001:db8:0:65::
-allocated address 2001:db8:0:66::
-allocated address 2001:db8:0:67::
-allocated address 2001:db8:0:68::
-allocated address 2001:db8:0:69::
-allocated address 2001:db8:0:6a::
-allocated address 2001:db8:0:6b::
-allocated address 2001:db8:0:6c::
-allocated address 2001:db8:0:6d::
-allocated address 2001:db8:0:6e::
-allocated address 2001:db8:0:6f::
-allocated address 2001:db8:0:70::
-allocated address 2001:db8:0:71::
-allocated address 2001:db8:0:72::
-allocated address 2001:db8:0:73::
-allocated address 2001:db8:0:74::
-allocated address 2001:db8:0:75::
-allocated address 2001:db8:0:76::
-allocated address 2001:db8:0:77::
-allocated address 2001:db8:0:78::
-allocated address 2001:db8:0:79::
-allocated address 2001:db8:0:7a::
-allocated address 2001:db8:0:7b::
-allocated address 2001:db8:0:7c::
-allocated address 2001:db8:0:7d::
-allocated address 2001:db8:0:7e::
-allocated address 2001:db8:0:7f::
-allocated address 2001:db8:0:80::
-allocated address 2001:db8:0:81::
-allocated address 2001:db8:0:82::
-allocated address 2001:db8:0:83::
-allocated address 2001:db8:0:84::
-allocated address 2001:db8:0:85::
-allocated address 2001:db8:0:86::
-allocated address 2001:db8:0:87::
-allocated address 2001:db8:0:88::
-allocated address 2001:db8:0:89::
-allocated address 2001:db8:0:8a::
-allocated address 2001:db8:0:8b::
-allocated address 2001:db8:0:8c::
-allocated address 2001:db8:0:8d::
-allocated address 2001:db8:0:8e::
-allocated address 2001:db8:0:8f::
-allocated address 2001:db8:0:90::
-allocated address 2001:db8:0:91::
-allocated address 2001:db8:0:92::
-allocated address 2001:db8:0:93::
-allocated address 2001:db8:0:94::
-allocated address 2001:db8:0:95::
-allocated address 2001:db8:0:96::
-allocated address 2001:db8:0:97::
-allocated address 2001:db8:0:98::
-allocated address 2001:db8:0:99::
-allocated address 2001:db8:0:9a::
-allocated address 2001:db8:0:9b::
-allocated address 2001:db8:0:9c::
-allocated address 2001:db8:0:9d::
-allocated address 2001:db8:0:9e::
-allocated address 2001:db8:0:9f::
-allocated address 2001:db8:0:a0::
-allocated address 2001:db8:0:a1::
-allocated address 2001:db8:0:a2::
-allocated address 2001:db8:0:a3::
-allocated address 2001:db8:0:a4::
-allocated address 2001:db8:0:a5::
-allocated address 2001:db8:0:a6::
-allocated address 2001:db8:0:a7::
-allocated address 2001:db8:0:a8::
-allocated address 2001:db8:0:a9::
-allocated address 2001:db8:0:aa::
-allocated address 2001:db8:0:ab::
-allocated address 2001:db8:0:ac::
-allocated address 2001:db8:0:ad::
-allocated address 2001:db8:0:ae::
-allocated address 2001:db8:0:af::
-allocated address 2001:db8:0:b0::
-allocated address 2001:db8:0:b1::
-allocated address 2001:db8:0:b2::
-allocated address 2001:db8:0:b3::
-allocated address 2001:db8:0:b4::
-allocated address 2001:db8:0:b5::
-allocated address 2001:db8:0:b6::
-allocated address 2001:db8:0:b7::
-allocated address 2001:db8:0:b8::
-allocated address 2001:db8:0:b9::
-allocated address 2001:db8:0:ba::
-allocated address 2001:db8:0:bb::
-allocated address 2001:db8:0:bc::
-allocated address 2001:db8:0:bd::
-allocated address 2001:db8:0:be::
-allocated address 2001:db8:0:bf::
-allocated address 2001:db8:0:c0::
-allocated address 2001:db8:0:c1::
-allocated address 2001:db8:0:c2::
-allocated address 2001:db8:0:c3::
-allocated address 2001:db8:0:c4::
-allocated address 2001:db8:0:c5::
-allocated address 2001:db8:0:c6::
-allocated address 2001:db8:0:c7::
-allocated address 2001:db8:0:c8::
-allocated address 2001:db8:0:c9::
-allocated address 2001:db8:0:ca::
-allocated address 2001:db8:0:cb::
-allocated address 2001:db8:0:cc::
-allocated address 2001:db8:0:cd::
-allocated address 2001:db8:0:ce::
-allocated address 2001:db8:0:cf::
-allocated address 2001:db8:0:d0::
-allocated address 2001:db8:0:d1::
-allocated address 2001:db8:0:d2::
-allocated address 2001:db8:0:d3::
-allocated address 2001:db8:0:d4::
-allocated address 2001:db8:0:d5::
-allocated address 2001:db8:0:d6::
-allocated address 2001:db8:0:d7::
-allocated address 2001:db8:0:d8::
-allocated address 2001:db8:0:d9::
-allocated address 2001:db8:0:da::
-allocated address 2001:db8:0:db::
-allocated address 2001:db8:0:dc::
-allocated address 2001:db8:0:dd::
-allocated address 2001:db8:0:de::
-allocated address 2001:db8:0:df::
-allocated address 2001:db8:0:e0::
-allocated address 2001:db8:0:e1::
-allocated address 2001:db8:0:e2::
-allocated address 2001:db8:0:e3::
-allocated address 2001:db8:0:e4::
-allocated address 2001:db8:0:e5::
-allocated address 2001:db8:0:e6::
-allocated address 2001:db8:0:e7::
-allocated address 2001:db8:0:e8::
-allocated address 2001:db8:0:e9::
-allocated address 2001:db8:0:ea::
-allocated address 2001:db8:0:eb::
-allocated address 2001:db8:0:ec::
-allocated address 2001:db8:0:ed::
-allocated address 2001:db8:0:ee::
-allocated address 2001:db8:0:ef::
-allocated address 2001:db8:0:f0::
-allocated address 2001:db8:0:f1::
-allocated address 2001:db8:0:f2::
-allocated address 2001:db8:0:f3::
-allocated address 2001:db8:0:f4::
-allocated address 2001:db8:0:f5::
-allocated address 2001:db8:0:f6::
-allocated address 2001:db8:0:f7::
-allocated address 2001:db8:0:f8::
-allocated address 2001:db8:0:f9::
-allocated address 2001:db8:0:fa::
-allocated address 2001:db8:0:fb::
-allocated address 2001:db8:0:fc::
-allocated address 2001:db8:0:fd::
-allocated address 2001:db8:0:fe::
-allocated address 2001:db8:0:ff::
 testing pool for prefix 192.168.23.0/24, flags=0x3, blacklist_size=3, expected_size=253
 allocated address 192.168.23.2
 allocated address 192.168.23.3

tests/lib/ippool_v6_test.err

@@ -0,0 +1,2 @@
+No more IP addresses available
+No more IP addresses available

tests/lib/ippool_v6_test.ok

@@ -0,0 +1,257 @@
+testing pool for prefix 2001:DB8::/56, flags=0x0, blacklist_size=0, expected_size=256
+allocated address 2001:db8::
+allocated address 2001:db8:0:1::
+allocated address 2001:db8:0:2::
+allocated address 2001:db8:0:3::
+allocated address 2001:db8:0:4::
+allocated address 2001:db8:0:5::
+allocated address 2001:db8:0:6::
+allocated address 2001:db8:0:7::
+allocated address 2001:db8:0:8::
+allocated address 2001:db8:0:9::
+allocated address 2001:db8:0:a::
+allocated address 2001:db8:0:b::
+allocated address 2001:db8:0:c::
+allocated address 2001:db8:0:d::
+allocated address 2001:db8:0:e::
+allocated address 2001:db8:0:f::
+allocated address 2001:db8:0:10::
+allocated address 2001:db8:0:11::
+allocated address 2001:db8:0:12::
+allocated address 2001:db8:0:13::
+allocated address 2001:db8:0:14::
+allocated address 2001:db8:0:15::
+allocated address 2001:db8:0:16::
+allocated address 2001:db8:0:17::
+allocated address 2001:db8:0:18::
+allocated address 2001:db8:0:19::
+allocated address 2001:db8:0:1a::
+allocated address 2001:db8:0:1b::
+allocated address 2001:db8:0:1c::
+allocated address 2001:db8:0:1d::
+allocated address 2001:db8:0:1e::
+allocated address 2001:db8:0:1f::
+allocated address 2001:db8:0:20::
+allocated address 2001:db8:0:21::
+allocated address 2001:db8:0:22::
+allocated address 2001:db8:0:23::
+allocated address 2001:db8:0:24::
+allocated address 2001:db8:0:25::
+allocated address 2001:db8:0:26::
+allocated address 2001:db8:0:27::
+allocated address 2001:db8:0:28::
+allocated address 2001:db8:0:29::
+allocated address 2001:db8:0:2a::
+allocated address 2001:db8:0:2b::
+allocated address 2001:db8:0:2c::
+allocated address 2001:db8:0:2d::
+allocated address 2001:db8:0:2e::
+allocated address 2001:db8:0:2f::
+allocated address 2001:db8:0:30::
+allocated address 2001:db8:0:31::
+allocated address 2001:db8:0:32::
+allocated address 2001:db8:0:33::
+allocated address 2001:db8:0:34::
+allocated address 2001:db8:0:35::
+allocated address 2001:db8:0:36::
+allocated address 2001:db8:0:37::
+allocated address 2001:db8:0:38::
+allocated address 2001:db8:0:39::
+allocated address 2001:db8:0:3a::
+allocated address 2001:db8:0:3b::
+allocated address 2001:db8:0:3c::
+allocated address 2001:db8:0:3d::
+allocated address 2001:db8:0:3e::
+allocated address 2001:db8:0:3f::
+allocated address 2001:db8:0:40::
+allocated address 2001:db8:0:41::
+allocated address 2001:db8:0:42::
+allocated address 2001:db8:0:43::
+allocated address 2001:db8:0:44::
+allocated address 2001:db8:0:45::
+allocated address 2001:db8:0:46::
+allocated address 2001:db8:0:47::
+allocated address 2001:db8:0:48::
+allocated address 2001:db8:0:49::
+allocated address 2001:db8:0:4a::
+allocated address 2001:db8:0:4b::
+allocated address 2001:db8:0:4c::
+allocated address 2001:db8:0:4d::
+allocated address 2001:db8:0:4e::
+allocated address 2001:db8:0:4f::
+allocated address 2001:db8:0:50::
+allocated address 2001:db8:0:51::
+allocated address 2001:db8:0:52::
+allocated address 2001:db8:0:53::
+allocated address 2001:db8:0:54::
+allocated address 2001:db8:0:55::
+allocated address 2001:db8:0:56::
+allocated address 2001:db8:0:57::
+allocated address 2001:db8:0:58::
+allocated address 2001:db8:0:59::
+allocated address 2001:db8:0:5a::
+allocated address 2001:db8:0:5b::
+allocated address 2001:db8:0:5c::
+allocated address 2001:db8:0:5d::
+allocated address 2001:db8:0:5e::
+allocated address 2001:db8:0:5f::
+allocated address 2001:db8:0:60::
+allocated address 2001:db8:0:61::
+allocated address 2001:db8:0:62::
+allocated address 2001:db8:0:63::
+allocated address 2001:db8:0:64::
+allocated address 2001:db8:0:65::
+allocated address 2001:db8:0:66::
+allocated address 2001:db8:0:67::
+allocated address 2001:db8:0:68::
+allocated address 2001:db8:0:69::
+allocated address 2001:db8:0:6a::
+allocated address 2001:db8:0:6b::
+allocated address 2001:db8:0:6c::
+allocated address 2001:db8:0:6d::
+allocated address 2001:db8:0:6e::
+allocated address 2001:db8:0:6f::
+allocated address 2001:db8:0:70::
+allocated address 2001:db8:0:71::
+allocated address 2001:db8:0:72::
+allocated address 2001:db8:0:73::
+allocated address 2001:db8:0:74::
+allocated address 2001:db8:0:75::
+allocated address 2001:db8:0:76::
+allocated address 2001:db8:0:77::
+allocated address 2001:db8:0:78::
+allocated address 2001:db8:0:79::
+allocated address 2001:db8:0:7a::
+allocated address 2001:db8:0:7b::
+allocated address 2001:db8:0:7c::
+allocated address 2001:db8:0:7d::
+allocated address 2001:db8:0:7e::
+allocated address 2001:db8:0:7f::
+allocated address 2001:db8:0:80::
+allocated address 2001:db8:0:81::
+allocated address 2001:db8:0:82::
+allocated address 2001:db8:0:83::
+allocated address 2001:db8:0:84::
+allocated address 2001:db8:0:85::
+allocated address 2001:db8:0:86::
+allocated address 2001:db8:0:87::
+allocated address 2001:db8:0:88::
+allocated address 2001:db8:0:89::
+allocated address 2001:db8:0:8a::
+allocated address 2001:db8:0:8b::
+allocated address 2001:db8:0:8c::
+allocated address 2001:db8:0:8d::
+allocated address 2001:db8:0:8e::
+allocated address 2001:db8:0:8f::
+allocated address 2001:db8:0:90::
+allocated address 2001:db8:0:91::
+allocated address 2001:db8:0:92::
+allocated address 2001:db8:0:93::
+allocated address 2001:db8:0:94::
+allocated address 2001:db8:0:95::
+allocated address 2001:db8:0:96::
+allocated address 2001:db8:0:97::
+allocated address 2001:db8:0:98::
+allocated address 2001:db8:0:99::
+allocated address 2001:db8:0:9a::
+allocated address 2001:db8:0:9b::
+allocated address 2001:db8:0:9c::
+allocated address 2001:db8:0:9d::
+allocated address 2001:db8:0:9e::
+allocated address 2001:db8:0:9f::
+allocated address 2001:db8:0:a0::
+allocated address 2001:db8:0:a1::
+allocated address 2001:db8:0:a2::
+allocated address 2001:db8:0:a3::
+allocated address 2001:db8:0:a4::
+allocated address 2001:db8:0:a5::
+allocated address 2001:db8:0:a6::
+allocated address 2001:db8:0:a7::
+allocated address 2001:db8:0:a8::
+allocated address 2001:db8:0:a9::
+allocated address 2001:db8:0:aa::
+allocated address 2001:db8:0:ab::
+allocated address 2001:db8:0:ac::
+allocated address 2001:db8:0:ad::
+allocated address 2001:db8:0:ae::
+allocated address 2001:db8:0:af::
+allocated address 2001:db8:0:b0::
+allocated address 2001:db8:0:b1::
+allocated address 2001:db8:0:b2::
+allocated address 2001:db8:0:b3::
+allocated address 2001:db8:0:b4::
+allocated address 2001:db8:0:b5::
+allocated address 2001:db8:0:b6::
+allocated address 2001:db8:0:b7::
+allocated address 2001:db8:0:b8::
+allocated address 2001:db8:0:b9::
+allocated address 2001:db8:0:ba::
+allocated address 2001:db8:0:bb::
+allocated address 2001:db8:0:bc::
+allocated address 2001:db8:0:bd::
+allocated address 2001:db8:0:be::
+allocated address 2001:db8:0:bf::
+allocated address 2001:db8:0:c0::
+allocated address 2001:db8:0:c1::
+allocated address 2001:db8:0:c2::
+allocated address 2001:db8:0:c3::
+allocated address 2001:db8:0:c4::
+allocated address 2001:db8:0:c5::
+allocated address 2001:db8:0:c6::
+allocated address 2001:db8:0:c7::
+allocated address 2001:db8:0:c8::
+allocated address 2001:db8:0:c9::
+allocated address 2001:db8:0:ca::
+allocated address 2001:db8:0:cb::
+allocated address 2001:db8:0:cc::
+allocated address 2001:db8:0:cd::
+allocated address 2001:db8:0:ce::
+allocated address 2001:db8:0:cf::
+allocated address 2001:db8:0:d0::
+allocated address 2001:db8:0:d1::
+allocated address 2001:db8:0:d2::
+allocated address 2001:db8:0:d3::
+allocated address 2001:db8:0:d4::
+allocated address 2001:db8:0:d5::
+allocated address 2001:db8:0:d6::
+allocated address 2001:db8:0:d7::
+allocated address 2001:db8:0:d8::
+allocated address 2001:db8:0:d9::
+allocated address 2001:db8:0:da::
+allocated address 2001:db8:0:db::
+allocated address 2001:db8:0:dc::
+allocated address 2001:db8:0:dd::
+allocated address 2001:db8:0:de::
+allocated address 2001:db8:0:df::
+allocated address 2001:db8:0:e0::
+allocated address 2001:db8:0:e1::
+allocated address 2001:db8:0:e2::
+allocated address 2001:db8:0:e3::
+allocated address 2001:db8:0:e4::
+allocated address 2001:db8:0:e5::
+allocated address 2001:db8:0:e6::
+allocated address 2001:db8:0:e7::
+allocated address 2001:db8:0:e8::
+allocated address 2001:db8:0:e9::
+allocated address 2001:db8:0:ea::
+allocated address 2001:db8:0:eb::
+allocated address 2001:db8:0:ec::
+allocated address 2001:db8:0:ed::
+allocated address 2001:db8:0:ee::
+allocated address 2001:db8:0:ef::
+allocated address 2001:db8:0:f0::
+allocated address 2001:db8:0:f1::
+allocated address 2001:db8:0:f2::
+allocated address 2001:db8:0:f3::
+allocated address 2001:db8:0:f4::
+allocated address 2001:db8:0:f5::
+allocated address 2001:db8:0:f6::
+allocated address 2001:db8:0:f7::
+allocated address 2001:db8:0:f8::
+allocated address 2001:db8:0:f9::
+allocated address 2001:db8:0:fa::
+allocated address 2001:db8:0:fb::
+allocated address 2001:db8:0:fc::
+allocated address 2001:db8:0:fd::
+allocated address 2001:db8:0:fe::
+allocated address 2001:db8:0:ff::

tests/testsuite.at

@@ -8,14 +8,33 @@ cat $abs_srcdir/lib/ippool_test.err > experr
 AT_CHECK([$abs_top_builddir/tests/lib/ippool_test], [], [expout], [experr])
 AT_CLEANUP
 
+AT_SETUP([ippool_v6])
+AT_KEYWORDS([ippool_v6])
+cat $abs_srcdir/lib/ippool_v6_test.ok > expout
+cat $abs_srcdir/lib/ippool_v6_test.err > experr
+AT_CHECK([$abs_top_builddir/tests/lib/ippool_test -v6], [], [expout], [experr])
+AT_CLEANUP
+
 AT_SETUP([in46a])
 AT_KEYWORDS([in46a])
 cat $abs_srcdir/lib/in46a_test.ok > expout
 AT_CHECK([$abs_top_builddir/tests/lib/in46a_test], [], [expout], [])
 AT_CLEANUP
 
+AT_SETUP([in46a_v6])
+AT_KEYWORDS([in46a_v6])
+cat $abs_srcdir/lib/in46a_v6_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/lib/in46a_test -v6], [], [expout], [])
+AT_CLEANUP
+
 AT_SETUP([gtpie])
 AT_KEYWORDS([gtpie])
 cat $abs_srcdir/gtp/gtpie_test.ok > expout
 AT_CHECK([$abs_top_builddir/tests/gtp/gtpie_test], [], [expout], [])
 AT_CLEANUP
+
+AT_SETUP([queue])
+AT_KEYWORDS([queue])
+cat $abs_srcdir/gtp/queue_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/gtp/queue_test], [], [expout], [])
+AT_CLEANUP