diff --git a/build.sh b/build.sh
index e31e40db..b3be739c 100755
--- a/build.sh
+++ b/build.sh
@@ -78,9 +78,9 @@ fi
 
 #_get_repo source https://github.com/ysurac/openmptcprouter-source "master"
 if [ "$OMR_OPENWRT" = "default" ]; then
-	_get_repo "$OMR_TARGET/source" https://github.com/openwrt/openwrt "7330348f2dbd9f01786041b726837aa393e3ce34"
-	_get_repo feeds/packages https://github.com/openwrt/packages "78dd3e05a8e4be0625bade05eb1831cb319df34c"
-	_get_repo feeds/luci https://github.com/openwrt/luci "ceae469a193d54103820d2bf1f599b8f0a26c363"
+	_get_repo "$OMR_TARGET/source" https://github.com/openwrt/openwrt "d346beb08c3a7867497000dc382635ee8ea0eedb"
+	_get_repo feeds/packages https://github.com/openwrt/packages "ea9d7884a2e35942c5e160b84228903988d517e9"
+	_get_repo feeds/luci https://github.com/openwrt/luci "d80a1718281cd90a1d14395ff0f7dbb23088b562"
 elif [ "$OMR_OPENWRT" = "master" ]; then
 	_get_repo "$OMR_TARGET/source" https://github.com/openwrt/openwrt "master"
 	_get_repo feeds/packages https://github.com/openwrt/packages "master"
diff --git a/root/package/base-files/files/sbin/sysupgrade b/root/package/base-files/files/sbin/sysupgrade
index 4e43e644..c4048bae 100755
--- a/root/package/base-files/files/sbin/sysupgrade
+++ b/root/package/base-files/files/sbin/sysupgrade
@@ -294,10 +294,12 @@ if [ -n "$CONF_RESTORE" ]; then
 	fi
 
 	[ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
+	cp /etc/passwd /etc/group /etc/shadow /tmp
 	tar -C / -x${TAR_V}zf "$CONF_RESTORE"
-	missing_lines /rom/etc/passwd /etc/passwd >> /etc/passwd
-	missing_lines /rom/etc/group /etc/group >> /etc/group
-	missing_lines /rom/etc/shadow /etc/shadow >> /etc/shadow
+	missing_lines /tmp/passwd /etc/passwd >> /etc/passwd
+	missing_lines /tmp/group /etc/group >> /etc/group
+	missing_lines /tmp/shadow /etc/shadow >> /etc/shadow
+	rm /tmp/passwd /tmp/group /tmp/shadow
 	exit $?
 fi
 
diff --git a/root/rules.mk b/root/rules.mk
new file mode 100644
index 00000000..9337a1f3
--- /dev/null
+++ b/root/rules.mk
@@ -0,0 +1,432 @@
+#
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2016 LEDE Project
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+ifneq ($(__rules_inc),1)
+__rules_inc=1
+
+ifeq ($(DUMP),)
+  -include $(TOPDIR)/.config
+endif
+include $(TOPDIR)/include/debug.mk
+include $(TOPDIR)/include/verbose.mk
+
+ifneq ($(filter check,$(MAKECMDGOALS)),)
+CHECK:=1
+DUMP:=1
+endif
+
+export TMP_DIR:=$(TOPDIR)/tmp
+export TMPDIR:=$(TMP_DIR)
+
+qstrip=$(strip $(subst ",,$(1)))
+#"))
+
+empty:=
+space:= $(empty) $(empty)
+comma:=,
+merge=$(subst $(space),,$(1))
+confvar=$(shell echo '$(foreach v,$(1),$(v)=$(subst ','\'',$($(v))))' | $(STAGING_DIR_HOST)/bin/mkhash md5)
+strip_last=$(patsubst %.$(lastword $(subst .,$(space),$(1))),%,$(1))
+
+paren_left = (
+paren_right = )
+chars_lower = a b c d e f g h i j k l m n o p q r s t u v w x y z
+chars_upper = A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
+
+define sep
+
+endef
+
+define newline
+
+
+endef
+
+__tr_list = $(join $(join $(1),$(foreach char,$(1),$(comma))),$(2))
+__tr_head_stripped = $(subst $(space),,$(foreach cv,$(call __tr_list,$(1),$(2)),$$$(paren_left)subst$(cv)$(comma)))
+__tr_head = $(subst $(paren_left)subst,$(paren_left)subst$(space),$(__tr_head_stripped))
+__tr_tail = $(subst $(space),,$(foreach cv,$(1),$(paren_right)))
+__tr_template = $(__tr_head)$$(1)$(__tr_tail)
+
+$(eval toupper = $(call __tr_template,$(chars_lower),$(chars_upper)))
+$(eval tolower = $(call __tr_template,$(chars_upper),$(chars_lower)))
+
+version_abbrev = $(if $(if $(CHECK),,$(DUMP)),$(1),$(shell printf '%.8s' $(1)))
+
+_SINGLE=export MAKEFLAGS=$(space);
+CFLAGS:=
+ARCH:=$(subst i486,i386,$(subst i586,i386,$(subst i686,i386,$(call qstrip,$(CONFIG_ARCH)))))
+ARCH_PACKAGES:=$(call qstrip,$(CONFIG_TARGET_ARCH_PACKAGES))
+BOARD:=$(call qstrip,$(CONFIG_TARGET_BOARD))
+SUBTARGET:=$(call qstrip,$(CONFIG_TARGET_SUBTARGET))
+TARGET_OPTIMIZATION:=$(call qstrip,$(CONFIG_TARGET_OPTIMIZATION))
+export EXTRA_OPTIMIZATION:=$(filter-out -fno-plt,$(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION)))
+TARGET_SUFFIX=$(call qstrip,$(CONFIG_TARGET_SUFFIX))
+BUILD_SUFFIX:=$(call qstrip,$(CONFIG_BUILD_SUFFIX))
+SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
+BUILD_SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
+NPROC:=$(shell sysctl -n hw.ncpu 2>/dev/null || nproc)
+export SHELL:=/usr/bin/env bash
+
+IS_PACKAGE_BUILD := $(if $(filter package/%,$(BUILD_SUBDIR)),1)
+
+OPTIMIZE_FOR_CPU=$(subst i386,i486,$(ARCH))
+
+ifeq ($(ARCH),powerpc)
+  FPIC:=-fPIC
+else
+  FPIC:=-fpic
+endif
+
+HOST_FPIC:=-fPIC
+
+ARCH_SUFFIX:=$(call qstrip,$(CONFIG_CPU_TYPE))
+GCC_ARCH:=
+
+ifneq ($(ARCH_SUFFIX),)
+  ARCH_SUFFIX:=_$(ARCH_SUFFIX)
+endif
+ifneq ($(filter -march=armv%,$(TARGET_OPTIMIZATION)),)
+  GCC_ARCH:=$(patsubst -march=%,%,$(filter -march=armv%,$(TARGET_OPTIMIZATION)))
+endif
+ifdef CONFIG_HAS_SPE_FPU
+  TARGET_SUFFIX:=$(TARGET_SUFFIX)spe
+endif
+ifdef CONFIG_MIPS64_ABI
+  ifneq ($(CONFIG_MIPS64_ABI_O32),y)
+     ARCH_SUFFIX:=$(ARCH_SUFFIX)_$(call qstrip,$(CONFIG_MIPS64_ABI))
+  endif
+endif
+
+DEFAULT_SUBDIR_TARGETS:=clean download prepare compile update refresh prereq dist distcheck configure check check-depends
+
+define DefaultTargets
+$(foreach t,$(DEFAULT_SUBDIR_TARGETS) $(1),
+  .$(t):
+  $(t): .$(t)
+  .PHONY: $(t) .$(t)
+)
+endef
+
+DL_DIR:=$(if $(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(TOPDIR)/dl)
+OUTPUT_DIR:=$(if $(call qstrip,$(CONFIG_BINARY_FOLDER)),$(call qstrip,$(CONFIG_BINARY_FOLDER)),$(TOPDIR)/bin)
+BIN_DIR:=$(OUTPUT_DIR)/targets/$(BOARD)/$(SUBTARGET)
+INCLUDE_DIR:=$(TOPDIR)/include
+SCRIPT_DIR:=$(TOPDIR)/scripts
+BUILD_DIR_BASE:=$(TOPDIR)/build_dir
+ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+  GCCV:=$(call qstrip,$(CONFIG_GCC_VERSION))
+  LIBC:=$(call qstrip,$(CONFIG_LIBC))
+  REAL_GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))
+  GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-openwrt-linux
+  DIR_SUFFIX:=_$(LIBC)$(if $(CONFIG_arm),_eabi)
+  BIN_DIR:=$(BIN_DIR)$(if $(CONFIG_USE_MUSL),,-$(LIBC))
+  TARGET_DIR_NAME = target-$(ARCH)$(ARCH_SUFFIX)$(DIR_SUFFIX)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
+  TOOLCHAIN_DIR_NAME = toolchain-$(ARCH)$(ARCH_SUFFIX)_gcc-$(GCCV)$(DIR_SUFFIX)
+else
+  ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
+    GNU_TARGET_NAME=$(call qstrip,$(CONFIG_TARGET_NAME))
+  else
+    GNU_TARGET_NAME=$(shell gcc -dumpmachine)
+  endif
+  REAL_GNU_TARGET_NAME=$(GNU_TARGET_NAME)
+  LIBC:=$(call qstrip,$(CONFIG_LIBC))
+  TARGET_DIR_NAME:=target-$(GNU_TARGET_NAME)_$(LIBC)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
+  TOOLCHAIN_DIR_NAME:=toolchain-$(GNU_TARGET_NAME)
+endif
+
+ifeq ($(or $(CONFIG_EXTERNAL_TOOLCHAIN),$(CONFIG_TARGET_uml)),)
+  ifeq ($(CONFIG_GCC_USE_IREMAP),y)
+    iremap = -iremap$(1):$(2)
+  else
+    iremap = -f$(if $(CONFIG_REPRODUCIBLE_DEBUG_INFO),file,macro)-prefix-map=$(1)=$(2)
+  endif
+endif
+
+PACKAGE_DIR:=$(BIN_DIR)/packages
+PACKAGE_DIR_ALL:=$(TOPDIR)/staging_dir/packages/$(BOARD)
+BUILD_DIR:=$(BUILD_DIR_BASE)/$(TARGET_DIR_NAME)
+STAGING_DIR:=$(TOPDIR)/staging_dir/$(TARGET_DIR_NAME)
+BUILD_DIR_TOOLCHAIN:=$(BUILD_DIR_BASE)/$(TOOLCHAIN_DIR_NAME)
+TOOLCHAIN_DIR:=$(TOPDIR)/staging_dir/$(TOOLCHAIN_DIR_NAME)
+STAMP_DIR:=$(BUILD_DIR)/stamp
+STAMP_DIR_HOST=$(BUILD_DIR_HOST)/stamp
+TARGET_ROOTFS_DIR?=$(if $(call qstrip,$(CONFIG_TARGET_ROOTFS_DIR)),$(call qstrip,$(CONFIG_TARGET_ROOTFS_DIR)),$(BUILD_DIR))
+TARGET_DIR:=$(TARGET_ROOTFS_DIR)/root-$(BOARD)
+STAGING_DIR_ROOT:=$(STAGING_DIR)/root-$(BOARD)
+STAGING_DIR_IMAGE:=$(STAGING_DIR)/image
+BUILD_LOG_DIR:=$(if $(call qstrip,$(CONFIG_BUILD_LOG_DIR)),$(call qstrip,$(CONFIG_BUILD_LOG_DIR)),$(TOPDIR)/logs)
+PKG_INFO_DIR := $(STAGING_DIR)/pkginfo
+
+BUILD_DIR_HOST:=$(if $(IS_PACKAGE_BUILD),$(BUILD_DIR_BASE)/hostpkg,$(BUILD_DIR_BASE)/host)
+STAGING_DIR_HOST:=$(TOPDIR)/staging_dir/host
+STAGING_DIR_HOSTPKG:=$(TOPDIR)/staging_dir/hostpkg
+
+TARGET_PATH:=$(subst $(space),:,$(filter-out .,$(filter-out ./,$(subst :,$(space),$(PATH)))))
+TARGET_INIT_PATH:=$(call qstrip,$(CONFIG_TARGET_INIT_PATH))
+TARGET_INIT_PATH:=$(if $(TARGET_INIT_PATH),$(TARGET_INIT_PATH),/usr/sbin:/sbin:/usr/bin:/bin)
+TARGET_CFLAGS:=$(TARGET_OPTIMIZATION)$(if $(CONFIG_DEBUG), -g3) $(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION))
+TARGET_CXXFLAGS = $(TARGET_CFLAGS)
+TARGET_ASFLAGS_DEFAULT = $(TARGET_CFLAGS)
+TARGET_ASFLAGS = $(TARGET_ASFLAGS_DEFAULT)
+TARGET_CPPFLAGS:=-I$(STAGING_DIR)/usr/include
+TARGET_LDFLAGS:=-L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib
+ifneq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+LIBGCC_S_PATH=$(realpath $(wildcard $(call qstrip,$(CONFIG_LIBGCC_ROOT_DIR))/$(call qstrip,$(CONFIG_LIBGCC_FILE_SPEC))))
+LIBGCC_S=$(if $(LIBGCC_S_PATH),-L$(dir $(LIBGCC_S_PATH)) -lgcc_s)
+LIBGCC_A=$(realpath $(lastword $(wildcard $(dir $(LIBGCC_S_PATH))/gcc/*/*/libgcc.a)))
+else
+LIBGCC_A=$(lastword $(wildcard $(TOOLCHAIN_DIR)/lib/gcc/*/*/libgcc.a))
+LIBGCC_S=$(if $(wildcard $(TOOLCHAIN_DIR)/lib/libgcc_s.so),-L$(TOOLCHAIN_DIR)/lib -lgcc_s,$(LIBGCC_A))
+endif
+
+ifeq ($(CONFIG_ARCH_64BIT),y)
+  LIB_SUFFIX:=64
+endif
+
+ifndef DUMP
+  ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+    -include $(TOOLCHAIN_DIR)/info.mk
+    export GCC_HONOUR_COPTS:=0
+    TARGET_CROSS:=$(if $(TARGET_CROSS),$(TARGET_CROSS),$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))-)
+    TARGET_CFLAGS+= -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result
+    TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/usr/include
+    ifeq ($(CONFIG_USE_MUSL),y)
+      TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/include/fortify
+    endif
+    TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/include
+    TARGET_LDFLAGS+= -L$(TOOLCHAIN_DIR)/usr/lib -L$(TOOLCHAIN_DIR)/lib
+    TARGET_PATH:=$(TOOLCHAIN_DIR)/bin:$(TARGET_PATH)
+  else
+    ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
+      TARGET_CROSS:=$(call qstrip,$(CONFIG_TOOLCHAIN_PREFIX))
+      TOOLCHAIN_ROOT_DIR:=$(call qstrip,$(CONFIG_TOOLCHAIN_ROOT))
+      TOOLCHAIN_BIN_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_BIN_PATH)))
+      TOOLCHAIN_INC_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_INC_PATH)))
+      TOOLCHAIN_LIB_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_LIB_PATH)))
+      ifneq ($(TOOLCHAIN_BIN_DIRS),)
+        TARGET_PATH:=$(subst $(space),:,$(TOOLCHAIN_BIN_DIRS)):$(TARGET_PATH)
+      endif
+      ifneq ($(TOOLCHAIN_INC_DIRS),)
+        TARGET_CPPFLAGS+= $(patsubst %,-I%,$(TOOLCHAIN_INC_DIRS))
+      endif
+      ifneq ($(TOOLCHAIN_LIB_DIRS),)
+        TARGET_LDFLAGS+= $(patsubst %,-L%,$(TOOLCHAIN_LIB_DIRS))
+      endif
+      TARGET_PATH:=$(TOOLCHAIN_DIR)/bin:$(TARGET_PATH)
+    endif
+  endif
+endif
+TARGET_PATH_PKG:=$(STAGING_DIR)/host/bin:$(STAGING_DIR_HOSTPKG)/bin:$(TARGET_PATH)
+
+ifeq ($(CONFIG_SOFT_FLOAT),y)
+  SOFT_FLOAT_CONFIG_OPTION:=--with-float=soft
+  ifeq ($(CONFIG_arm),y)
+    TARGET_CFLAGS+= -mfloat-abi=soft
+  else
+    TARGET_CFLAGS+= -msoft-float
+  endif
+else
+  SOFT_FLOAT_CONFIG_OPTION:=
+  ifeq ($(CONFIG_arm),y)
+    TARGET_CFLAGS+= -mfloat-abi=hard
+  endif
+endif
+
+export PATH:=$(TARGET_PATH)
+export STAGING_DIR STAGING_DIR_HOST STAGING_DIR_HOSTPKG
+export SH_FUNC:=. $(INCLUDE_DIR)/shell.sh;
+
+PKG_CONFIG:=$(STAGING_DIR_HOST)/bin/pkg-config
+
+export PKG_CONFIG
+
+HOSTCC:=gcc
+HOSTCXX:=g++
+HOST_CPPFLAGS:=-I$(STAGING_DIR_HOST)/include $(if $(IS_PACKAGE_BUILD),-I$(STAGING_DIR_HOSTPKG)/include -I$(STAGING_DIR)/host/include)
+HOST_CFLAGS:=-O2 $(HOST_CPPFLAGS)
+HOST_LDFLAGS:=-L$(STAGING_DIR_HOST)/lib $(if $(IS_PACKAGE_BUILD),-L$(STAGING_DIR_HOSTPKG)/lib -L$(STAGING_DIR)/host/lib)
+
+ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+  TARGET_AR:=$(TARGET_CROSS)gcc-ar
+  TARGET_RANLIB:=$(TARGET_CROSS)gcc-ranlib
+  TARGET_NM:=$(TARGET_CROSS)gcc-nm
+else
+  TARGET_AR:=$(TARGET_CROSS)ar
+  TARGET_RANLIB:=$(TARGET_CROSS)ranlib
+  TARGET_NM:=$(TARGET_CROSS)nm
+endif
+
+BUILD_KEY=$(TOPDIR)/key-build
+
+FAKEROOT:=$(STAGING_DIR_HOST)/bin/fakeroot
+
+TARGET_CC:=$(TARGET_CROSS)gcc
+TARGET_CXX:=$(TARGET_CROSS)g++
+KPATCH:=$(SCRIPT_DIR)/patch-kernel.sh
+SED:=$(STAGING_DIR_HOST)/bin/sed -i -e
+ESED:=$(STAGING_DIR_HOST)/bin/sed -E -i -e
+CP:=cp -fpR
+LN:=ln -sf
+XARGS:=xargs -r
+
+BASH:=bash
+TAR:=tar
+FIND:=find
+PATCH:=patch
+PYTHON:=python
+
+INSTALL_BIN:=install -m0755
+INSTALL_SUID:=install -m4755
+INSTALL_DIR:=install -d -m0755
+INSTALL_DATA:=install -m0644
+INSTALL_CONF:=install -m0600
+
+TARGET_CC_NOCACHE:=$(TARGET_CC)
+TARGET_CXX_NOCACHE:=$(TARGET_CXX)
+HOSTCC_NOCACHE:=$(HOSTCC)
+HOSTCXX_NOCACHE:=$(HOSTCXX)
+export TARGET_CC_NOCACHE
+export TARGET_CXX_NOCACHE
+export HOSTCC_NOCACHE
+export HOSTCXX_NOCACHE
+
+ifneq ($(CONFIG_CCACHE),)
+  TARGET_CC:= ccache_cc
+  TARGET_CXX:= ccache_cxx
+  HOSTCC:= ccache $(HOSTCC)
+  HOSTCXX:= ccache $(HOSTCXX)
+  export CCACHE_BASEDIR:=$(TOPDIR)
+  export CCACHE_DIR:=$(if $(call qstrip,$(CONFIG_CCACHE_DIR)),$(call qstrip,$(CONFIG_CCACHE_DIR)),$(TOPDIR)/.ccache)
+  export CCACHE_COMPILERCHECK:=%compiler% -dumpmachine; %compiler% -dumpversion
+endif
+
+TARGET_CONFIGURE_OPTS = \
+  AR="$(TARGET_AR)" \
+  AS="$(TARGET_CC) -c $(TARGET_ASFLAGS)" \
+  LD=$(TARGET_CROSS)ld \
+  NM="$(TARGET_NM)" \
+  CC="$(TARGET_CC)" \
+  GCC="$(TARGET_CC)" \
+  CXX="$(TARGET_CXX)" \
+  RANLIB="$(TARGET_RANLIB)" \
+  STRIP=$(TARGET_CROSS)strip \
+  OBJCOPY=$(TARGET_CROSS)objcopy \
+  OBJDUMP=$(TARGET_CROSS)objdump \
+  SIZE=$(TARGET_CROSS)size
+
+# strip an entire directory
+ifneq ($(CONFIG_NO_STRIP),)
+  RSTRIP:=:
+  STRIP:=:
+else
+  ifneq ($(CONFIG_USE_STRIP),)
+    STRIP:=$(TARGET_CROSS)strip $(call qstrip,$(CONFIG_STRIP_ARGS))
+  else
+    ifneq ($(CONFIG_USE_SSTRIP),)
+      STRIP:=$(STAGING_DIR_HOST)/bin/sstrip $(call qstrip,$(CONFIG_SSTRIP_ARGS))
+    endif
+  endif
+  RSTRIP= \
+    export CROSS="$(TARGET_CROSS)" \
+		$(if $(PKG_BUILD_ID),KEEP_BUILD_ID=1) \
+		$(if $(CONFIG_KERNEL_KALLSYMS),NO_RENAME=1) \
+		$(if $(CONFIG_KERNEL_PROFILING),KEEP_SYMBOLS=1); \
+    NM="$(TARGET_CROSS)nm" \
+    STRIP="$(STRIP)" \
+    STRIP_KMOD="$(SCRIPT_DIR)/strip-kmod.sh" \
+    PATCHELF="$(STAGING_DIR_HOST)/bin/patchelf" \
+    $(SCRIPT_DIR)/rstrip.sh
+endif
+
+ifeq ($(CONFIG_IPV6),y)
+  DISABLE_IPV6:=
+else
+  DISABLE_IPV6:=--disable-ipv6
+endif
+
+TAR_OPTIONS:=-xf -
+
+ifeq ($(CONFIG_BUILD_LOG),y)
+  BUILD_LOG:=1
+endif
+
+export BISON_PKGDATADIR:=$(STAGING_DIR_HOST)/share/bison
+export M4:=$(STAGING_DIR_HOST)/bin/m4
+
+define shvar
+V_$(subst .,_,$(subst -,_,$(subst /,_,$(1))))
+endef
+
+define shexport
+export $(call shvar,$(1))=$$(call $(1))
+endef
+
+# Execute commands under flock
+# $(1) => The shell expression.
+# $(2) => The lock name. If not given, the global lock will be used.
+ifneq ($(wildcard $(STAGING_DIR_HOST)/bin/flock),)
+  define locked
+	SHELL= \
+	flock \
+		$(TMP_DIR)/.$(if $(2),$(strip $(2)),global).flock \
+		-c '$(subst ','\'',$(1))'
+  endef
+else
+  locked=$(1)
+endif
+
+# Recursively copy paths into another directory, purge dangling
+# symlinks before.
+# $(1) => File glob expression
+# $(2) => Destination directory
+define file_copy
+	for src_dir in $(sort $(foreach d,$(wildcard $(1)),$(dir $(d)))); do \
+		( cd $$src_dir; find -type f -or -type d ) | \
+			( cd $(2); while :; do \
+				read FILE; \
+				[ -z "$$FILE" ] && break; \
+				[ -L "$$FILE" ] || continue; \
+				echo "Removing symlink $(2)/$$FILE"; \
+				rm -f "$$FILE"; \
+			done; ); \
+	done; \
+	$(CP) $(1) $(2)
+endef
+
+# Calculate sha256sum of any plain file within a given directory
+# $(1) => Input directory
+# $(2) => If set, recurse into subdirectories
+define sha256sums
+	(cd $(1); find . $(if $(2),,-maxdepth 1) -type f -not -name 'sha256sums' -printf "%P\n" | sort | \
+		xargs -r $(STAGING_DIR_HOST)/bin/mkhash -n sha256 | sed -ne 's!^\(.*\) \(.*\)$$!\1 *\2!p' > sha256sums)
+endef
+
+# file extension
+ext=$(word $(words $(subst ., ,$(1))),$(subst ., ,$(1)))
+
+all:
+FORCE: ;
+.PHONY: FORCE
+
+check: FORCE
+	@true
+
+val.%:
+	@$(if $(filter undefined,$(origin $*)),\
+		echo "$* undefined" >&2, \
+		echo '$(subst ','"'"',$($*))' \
+	)
+
+var.%:
+	@$(if $(filter undefined,$(origin $*)),\
+		echo "$* undefined" >&2, \
+		echo "$*='"'$(subst ','"'\"'\"'"',$($*))'"'" \
+	)
+
+endif #__rules_inc
diff --git a/root/target/linux/generic/hack-5.4/690-mptcp_trunk.patch b/root/target/linux/generic/hack-5.4/690-mptcp_trunk.patch
index 8c75bb7c..eb246722 100644
--- a/root/target/linux/generic/hack-5.4/690-mptcp_trunk.patch
+++ b/root/target/linux/generic/hack-5.4/690-mptcp_trunk.patch
@@ -3288,14 +3288,14 @@ diff -aurN linux-5.4.64/net/ipv4/syncookies.c linux-5.4.64.mptcp/net/ipv4/syncoo
  	 * the ACK carries the same options again (see RFC1122 4.2.3.8)
  	 */
 @@ -387,15 +421,15 @@
- 	/* Try to redo what tcp_v4_send_synack did. */
- 	req->rsk_window_clamp = tp->window_clamp ? :dst_metric(&rt->dst, RTAX_WINDOW);
+ 	    (req->rsk_window_clamp > full_space || req->rsk_window_clamp == 0))
+ 		req->rsk_window_clamp = full_space;
  
--	tcp_select_initial_window(sk, tcp_full_space(sk), req->mss,
+-	tcp_select_initial_window(sk, full_space, req->mss,
 -				  &req->rsk_rcv_wnd, &req->rsk_window_clamp,
 -				  ireq->wscale_ok, &rcv_wscale,
 -				  dst_metric(&rt->dst, RTAX_INITRWND));
-+	tp->ops->select_initial_window(sk, tcp_full_space(sk), req->mss,
++	tp->ops->select_initial_window(sk, full_space, req->mss,
 +				       &req->rsk_rcv_wnd, &req->rsk_window_clamp,
 +				       ireq->wscale_ok, &rcv_wscale,
 +				       dst_metric(&rt->dst, RTAX_INITRWND));
@@ -4028,16 +4028,6 @@ diff -aurN linux-5.4.64/net/ipv4/tcp.c linux-5.4.64.mptcp/net/ipv4/tcp.c
  #ifdef CONFIG_MMU
  	case TCP_ZEROCOPY_RECEIVE: {
  		struct tcp_zerocopy_receive zc;
-@@ -3862,7 +4143,9 @@
- 	if (sk->sk_state == TCP_SYN_SENT || sk->sk_state == TCP_SYN_RECV)
- 		TCP_INC_STATS(sock_net(sk), TCP_MIB_ATTEMPTFAILS);
- 
-+	WARN_ON(sk->sk_state == TCP_CLOSE);
- 	tcp_set_state(sk, TCP_CLOSE);
-+
- 	tcp_clear_xmit_timers(sk);
- 	if (req)
- 		reqsk_fastopen_remove(sk, req, false);
 @@ -3878,6 +4161,8 @@
  
  int tcp_abort(struct sock *sk, int err)
@@ -6715,14 +6705,14 @@ diff -aurN linux-5.4.64/net/ipv6/syncookies.c linux-5.4.64.mptcp/net/ipv6/syncoo
  		goto out_free;
  
 @@ -241,15 +259,15 @@
- 	}
+ 	    (req->rsk_window_clamp > full_space || req->rsk_window_clamp == 0))
+ 		req->rsk_window_clamp = full_space;
  
- 	req->rsk_window_clamp = tp->window_clamp ? :dst_metric(dst, RTAX_WINDOW);
--	tcp_select_initial_window(sk, tcp_full_space(sk), req->mss,
+-	tcp_select_initial_window(sk, full_space, req->mss,
 -				  &req->rsk_rcv_wnd, &req->rsk_window_clamp,
 -				  ireq->wscale_ok, &rcv_wscale,
 -				  dst_metric(dst, RTAX_INITRWND));
-+	tp->ops->select_initial_window(sk, tcp_full_space(sk), req->mss,
++	tp->ops->select_initial_window(sk, full_space, req->mss,
 +				       &req->rsk_rcv_wnd, &req->rsk_window_clamp,
 +				       ireq->wscale_ok, &rcv_wscale,
 +				       dst_metric(dst, RTAX_INITRWND));