kernel: 5.4: import wireguard backport

Rather than using the clunky, old, slower wireguard-linux-compat out of
tree module, this commit does a patch-by-patch backport of upstream's
wireguard to 5.4. This specific backport is in widespread use, being
part of SUSE's enterprise kernel, Oracle's enterprise kernel, Google's
Android kernel, Gentoo's distro kernel, and probably more I've forgotten
about. It's definately the "more proper" way of adding wireguard to a
kernel than the ugly compat.h hell of the wireguard-linux-compat repo.
And most importantly for OpenWRT, it allows using the same module
configuration code for 5.10 as for 5.4, with no need for bifurcation.

These patches are from the backport tree which is maintained in the
open here: https://git.zx2c4.com/wireguard-linux/log/?h=backport-5.4.y
I'll be sending PRs to update this as needed.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
(cherry picked from commit 3888fa78802354ab7bbd19b7d061fd80a16ce06b)
(cherry picked from commit d54072587146dd0db9bb52b513234d944edabda3)
(cherry picked from commit 196f3d586f11d96ba4ab60068cfb12420bcd20fd)
(cherry picked from commit 3500fd7938a6d0c0e320295f0aa2fa34b1ebc08d)
(cherry picked from commit 23b801d3ba57e34cc609ea40982c7fbed08164e9)
(cherry picked from commit 0c0cb97da7f5cc06919449131dd57ed805f8f78d)
(cherry picked from commit 2a27f6f90a430342cdbe84806e8b10acff446a2d)
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>

1 files changed, 373 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.4/080-wireguard-0078-wireguard-selftests-remove-ancient-kernel-compatibil.patch b/target/linux/generic/backport-5.4/080-wireguard-0078-wireguard-selftests-remove-ancient-kernel-compatibil.patch
new file mode 100644
index 0000000000..6ff0dd9d10
--- /dev/null
+++ b/target/linux/generic/backport-5.4/080-wireguard-0078-wireguard-selftests-remove-ancient-kernel-compatibil.patch
@@ -0,0 +1,373 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Jason A. Donenfeld" <Jason@zx2c4.com>
+Date: Thu, 2 Jan 2020 17:47:49 +0100
+Subject: [PATCH] wireguard: selftests: remove ancient kernel compatibility
+ code
+
+commit 9a69a4c8802adf642bc4a13d471b5a86b44ed434 upstream.
+
+Quite a bit of the test suite was designed to work with ancient kernels.
+Thankfully we no longer have to deal with this. This commit updates
+things that we can finally update and removes things that we can finally
+remove, to avoid the build-up of the last several years as a result of
+having to support ancient kernels. We can finally rely on suppress_
+prefixlength being available. On the build side of things, the no-PIE
+hack is no longer required, and we can bump some of the tools, repair
+our m68k and i686-kvm support, and get better coverage of the static
+branches used in the crypto lib and in udp_tunnel.
+
+Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
+---
+ tools/testing/selftests/wireguard/netns.sh    | 11 +--
+ .../testing/selftests/wireguard/qemu/Makefile | 82 ++++++++++---------
+ .../selftests/wireguard/qemu/arch/m68k.config |  2 +-
+ tools/testing/selftests/wireguard/qemu/init.c |  1 +
+ .../selftests/wireguard/qemu/kernel.config    |  2 +
+ 5 files changed, 50 insertions(+), 48 deletions(-)
+
+--- a/tools/testing/selftests/wireguard/netns.sh
++++ b/tools/testing/selftests/wireguard/netns.sh
+@@ -37,7 +37,7 @@ n2() { pretty 2 "$*"; maybe_exec ip netn
+ ip0() { pretty 0 "ip $*"; ip -n $netns0 "$@"; }
+ ip1() { pretty 1 "ip $*"; ip -n $netns1 "$@"; }
+ ip2() { pretty 2 "ip $*"; ip -n $netns2 "$@"; }
+-sleep() { read -t "$1" -N 0 || true; }
++sleep() { read -t "$1" -N 1 || true; }
+ waitiperf() { pretty "${1//*-}" "wait for iperf:5201"; while [[ $(ss -N "$1" -tlp 'sport = 5201') != *iperf3* ]]; do sleep 0.1; done; }
+ waitncatudp() { pretty "${1//*-}" "wait for udp:1111"; while [[ $(ss -N "$1" -ulp 'sport = 1111') != *ncat* ]]; do sleep 0.1; done; }
+ waitncattcp() { pretty "${1//*-}" "wait for tcp:1111"; while [[ $(ss -N "$1" -tlp 'sport = 1111') != *ncat* ]]; do sleep 0.1; done; }
+@@ -294,12 +294,9 @@ ip1 -6 rule add table main suppress_pref
+ ip1 -4 route add default dev wg0 table 51820
+ ip1 -4 rule add not fwmark 51820 table 51820
+ ip1 -4 rule add table main suppress_prefixlength 0
+-# suppress_prefixlength only got added in 3.12, and we want to support 3.10+.
+-if [[ $(ip1 -4 rule show all) == *suppress_prefixlength* ]]; then
+-	# Flood the pings instead of sending just one, to trigger routing table reference counting bugs.
+-	n1 ping -W 1 -c 100 -f 192.168.99.7
+-	n1 ping -W 1 -c 100 -f abab::1111
+-fi
++# Flood the pings instead of sending just one, to trigger routing table reference counting bugs.
++n1 ping -W 1 -c 100 -f 192.168.99.7
++n1 ping -W 1 -c 100 -f abab::1111
+ 
+ n0 iptables -t nat -F
+ ip0 link del vethrc
+--- a/tools/testing/selftests/wireguard/qemu/Makefile
++++ b/tools/testing/selftests/wireguard/qemu/Makefile
+@@ -5,6 +5,7 @@
+ PWD := $(shell pwd)
+ 
+ CHOST := $(shell gcc -dumpmachine)
++HOST_ARCH := $(firstword $(subst -, ,$(CHOST)))
+ ifneq (,$(ARCH))
+ CBUILD := $(subst -gcc,,$(lastword $(subst /, ,$(firstword $(wildcard $(foreach bindir,$(subst :, ,$(PATH)),$(bindir)/$(ARCH)-*-gcc))))))
+ ifeq (,$(CBUILD))
+@@ -37,19 +38,19 @@ endef
+ define file_download =
+ $(DISTFILES_PATH)/$(1):
+ 	mkdir -p $(DISTFILES_PATH)
+-	flock -x $$@.lock -c '[ -f $$@ ] && exit 0; wget -O $$@.tmp $(MIRROR)$(1) || wget -t inf --retry-on-http-error=404 -O $$@.tmp $(2)$(1) || rm -f $$@.tmp'
++	flock -x $$@.lock -c '[ -f $$@ ] && exit 0; wget -O $$@.tmp $(MIRROR)$(1) || wget -O $$@.tmp $(2)$(1) || rm -f $$@.tmp'
+ 	if echo "$(3)  $$@.tmp" | sha256sum -c -; then mv $$@.tmp $$@; else rm -f $$@.tmp; exit 71; fi
+ endef
+ 
+-$(eval $(call tar_download,MUSL,musl,1.1.20,.tar.gz,https://www.musl-libc.org/releases/,44be8771d0e6c6b5f82dd15662eb2957c9a3173a19a8b49966ac0542bbd40d61))
++$(eval $(call tar_download,MUSL,musl,1.1.24,.tar.gz,https://www.musl-libc.org/releases/,1370c9a812b2cf2a7d92802510cca0058cc37e66a7bedd70051f0a34015022a3))
+ $(eval $(call tar_download,LIBMNL,libmnl,1.0.4,.tar.bz2,https://www.netfilter.org/projects/libmnl/files/,171f89699f286a5854b72b91d06e8f8e3683064c5901fb09d954a9ab6f551f81))
+-$(eval $(call tar_download,IPERF,iperf,3.1.7,.tar.gz,http://downloads.es.net/pub/iperf/,a4ef73406fe92250602b8da2ae89ec53211f805df97a1d1d629db5a14043734f))
++$(eval $(call tar_download,IPERF,iperf,3.7,.tar.gz,https://downloads.es.net/pub/iperf/,d846040224317caf2f75c843d309a950a7db23f9b44b94688ccbe557d6d1710c))
+ $(eval $(call tar_download,BASH,bash,5.0,.tar.gz,https://ftp.gnu.org/gnu/bash/,b4a80f2ac66170b2913efbfb9f2594f1f76c7b1afd11f799e22035d63077fb4d))
+-$(eval $(call tar_download,IPROUTE2,iproute2,5.1.0,.tar.gz,https://www.kernel.org/pub/linux/utils/net/iproute2/,9b43707d6075ecdca14803ca8ce0c8553848c49fa1586d12fd508d66577243f2))
+-$(eval $(call tar_download,IPTABLES,iptables,1.6.1,.tar.bz2,https://www.netfilter.org/projects/iptables/files/,0fc2d7bd5d7be11311726466789d4c65fb4c8e096c9182b56ce97440864f0cf5))
+-$(eval $(call tar_download,NMAP,nmap,7.60,.tar.bz2,https://nmap.org/dist/,a8796ecc4fa6c38aad6139d9515dc8113023a82e9d787e5a5fb5fa1b05516f21))
+-$(eval $(call tar_download,IPUTILS,iputils,s20161105,.tar.gz,https://github.com/iputils/iputils/archive/s20161105.tar.gz/#,f813092f03d17294fd23544b129b95cdb87fe19f7970a51908a6b88509acad8a))
+-$(eval $(call tar_download,WIREGUARD_TOOLS,WireGuard,0.0.20191212,.tar.xz,https://git.zx2c4.com/WireGuard/snapshot/,b0d718380f7a8822b2f12d75e462fa4eafa3a77871002981f367cd4fe2a1b071))
++$(eval $(call tar_download,IPROUTE2,iproute2,5.4.0,.tar.xz,https://www.kernel.org/pub/linux/utils/net/iproute2/,fe97aa60a0d4c5ac830be18937e18dc3400ca713a33a89ad896ff1e3d46086ae))
++$(eval $(call tar_download,IPTABLES,iptables,1.8.4,.tar.bz2,https://www.netfilter.org/projects/iptables/files/,993a3a5490a544c2cbf2ef15cf7e7ed21af1845baf228318d5c36ef8827e157c))
++$(eval $(call tar_download,NMAP,nmap,7.80,.tar.bz2,https://nmap.org/dist/,fcfa5a0e42099e12e4bf7a68ebe6fde05553383a682e816a7ec9256ab4773faa))
++$(eval $(call tar_download,IPUTILS,iputils,s20190709,.tar.gz,https://github.com/iputils/iputils/archive/s20190709.tar.gz/#,a15720dd741d7538dd2645f9f516d193636ae4300ff7dbc8bfca757bf166490a))
++$(eval $(call tar_download,WIREGUARD_TOOLS,wireguard-tools,1.0.20191226,.tar.xz,https://git.zx2c4.com/wireguard-tools/snapshot/,aa8af0fdc9872d369d8c890a84dbc2a2466b55795dccd5b47721b2d97644b04f))
+ 
+ KERNEL_BUILD_PATH := $(BUILD_PATH)/kernel$(if $(findstring yes,$(DEBUG_KERNEL)),-debug)
+ rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) $(filter $(subst *,%,$2),$d))
+@@ -59,23 +60,21 @@ export CFLAGS ?= -O3 -pipe
+ export LDFLAGS ?=
+ export CPPFLAGS := -I$(BUILD_PATH)/include
+ 
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ CROSS_COMPILE_FLAG := --host=$(CHOST)
+-NOPIE_GCC := gcc -fno-PIE
+ CFLAGS += -march=native
+ STRIP := strip
+ else
+ $(info Cross compilation: building for $(CBUILD) using $(CHOST))
+ CROSS_COMPILE_FLAG := --build=$(CBUILD) --host=$(CHOST)
+ export CROSS_COMPILE=$(CBUILD)-
+-NOPIE_GCC := $(CBUILD)-gcc -fno-PIE
+ STRIP := $(CBUILD)-strip
+ endif
+ ifeq ($(ARCH),aarch64)
+ QEMU_ARCH := aarch64
+ KERNEL_ARCH := arm64
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm64/boot/Image
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
+ else
+ QEMU_MACHINE := -cpu cortex-a53 -machine virt
+@@ -85,7 +84,7 @@ else ifeq ($(ARCH),aarch64_be)
+ QEMU_ARCH := aarch64
+ KERNEL_ARCH := arm64
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm64/boot/Image
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
+ else
+ QEMU_MACHINE := -cpu cortex-a53 -machine virt
+@@ -95,7 +94,7 @@ else ifeq ($(ARCH),arm)
+ QEMU_ARCH := arm
+ KERNEL_ARCH := arm
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm/boot/zImage
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
+ else
+ QEMU_MACHINE := -cpu cortex-a15 -machine virt
+@@ -105,7 +104,7 @@ else ifeq ($(ARCH),armeb)
+ QEMU_ARCH := arm
+ KERNEL_ARCH := arm
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm/boot/zImage
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
+ else
+ QEMU_MACHINE := -cpu cortex-a15 -machine virt
+@@ -116,7 +115,7 @@ else ifeq ($(ARCH),x86_64)
+ QEMU_ARCH := x86_64
+ KERNEL_ARCH := x86_64
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/x86/boot/bzImage
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host -machine q35,accel=kvm
+ else
+ QEMU_MACHINE := -cpu Skylake-Server -machine q35
+@@ -126,7 +125,7 @@ else ifeq ($(ARCH),i686)
+ QEMU_ARCH := i386
+ KERNEL_ARCH := x86
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/x86/boot/bzImage
+-ifeq ($(subst i686,x86_64,$(CBUILD)),$(CHOST))
++ifeq ($(subst x86_64,i686,$(HOST_ARCH)),$(ARCH))
+ QEMU_MACHINE := -cpu host -machine q35,accel=kvm
+ else
+ QEMU_MACHINE := -cpu coreduo -machine q35
+@@ -136,7 +135,7 @@ else ifeq ($(ARCH),mips64)
+ QEMU_ARCH := mips64
+ KERNEL_ARCH := mips
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host -machine malta,accel=kvm
+ CFLAGS += -EB
+ else
+@@ -147,7 +146,7 @@ else ifeq ($(ARCH),mips64el)
+ QEMU_ARCH := mips64el
+ KERNEL_ARCH := mips
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host -machine malta,accel=kvm
+ CFLAGS += -EL
+ else
+@@ -158,7 +157,7 @@ else ifeq ($(ARCH),mips)
+ QEMU_ARCH := mips
+ KERNEL_ARCH := mips
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host -machine malta,accel=kvm
+ CFLAGS += -EB
+ else
+@@ -169,7 +168,7 @@ else ifeq ($(ARCH),mipsel)
+ QEMU_ARCH := mipsel
+ KERNEL_ARCH := mips
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host -machine malta,accel=kvm
+ CFLAGS += -EL
+ else
+@@ -180,7 +179,7 @@ else ifeq ($(ARCH),powerpc64le)
+ QEMU_ARCH := ppc64
+ KERNEL_ARCH := powerpc
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host,accel=kvm -machine pseries
+ else
+ QEMU_MACHINE := -machine pseries
+@@ -190,7 +189,7 @@ else ifeq ($(ARCH),powerpc)
+ QEMU_ARCH := ppc
+ KERNEL_ARCH := powerpc
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/powerpc/boot/uImage
+-ifeq ($(CHOST),$(CBUILD))
++ifeq ($(HOST_ARCH),$(ARCH))
+ QEMU_MACHINE := -cpu host,accel=kvm -machine ppce500
+ else
+ QEMU_MACHINE := -machine ppce500
+@@ -200,10 +199,11 @@ else ifeq ($(ARCH),m68k)
+ QEMU_ARCH := m68k
+ KERNEL_ARCH := m68k
+ KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+-ifeq ($(CHOST),$(CBUILD))
+-QEMU_MACHINE := -cpu host,accel=kvm -machine q800
++KERNEL_CMDLINE := $(shell sed -n 's/CONFIG_CMDLINE=\(.*\)/\1/p' arch/m68k.config)
++ifeq ($(HOST_ARCH),$(ARCH))
++QEMU_MACHINE := -cpu host,accel=kvm -machine q800 -smp 1 -append $(KERNEL_CMDLINE)
+ else
+-QEMU_MACHINE := -machine q800
++QEMU_MACHINE := -machine q800 -smp 1 -append $(KERNEL_CMDLINE)
+ endif
+ else
+ $(error I only build: x86_64, i686, arm, armeb, aarch64, aarch64_be, mips, mipsel, mips64, mips64el, powerpc64le, powerpc, m68k)
+@@ -238,14 +238,14 @@ $(BUILD_PATH)/init-cpio-spec.txt:
+ 	echo "nod /dev/console 644 0 0 c 5 1" >> $@
+ 	echo "dir /bin 755 0 0" >> $@
+ 	echo "file /bin/iperf3 $(IPERF_PATH)/src/iperf3 755 0 0" >> $@
+-	echo "file /bin/wg $(WIREGUARD_TOOLS_PATH)/src/tools/wg 755 0 0" >> $@
++	echo "file /bin/wg $(WIREGUARD_TOOLS_PATH)/src/wg 755 0 0" >> $@
+ 	echo "file /bin/bash $(BASH_PATH)/bash 755 0 0" >> $@
+ 	echo "file /bin/ip $(IPROUTE2_PATH)/ip/ip 755 0 0" >> $@
+ 	echo "file /bin/ss $(IPROUTE2_PATH)/misc/ss 755 0 0" >> $@
+ 	echo "file /bin/ping $(IPUTILS_PATH)/ping 755 0 0" >> $@
+ 	echo "file /bin/ncat $(NMAP_PATH)/ncat/ncat 755 0 0" >> $@
+-	echo "file /bin/xtables-multi $(IPTABLES_PATH)/iptables/xtables-multi 755 0 0" >> $@
+-	echo "slink /bin/iptables xtables-multi 777 0 0" >> $@
++	echo "file /bin/xtables-legacy-multi $(IPTABLES_PATH)/iptables/xtables-legacy-multi 755 0 0" >> $@
++	echo "slink /bin/iptables xtables-legacy-multi 777 0 0" >> $@
+ 	echo "slink /bin/ping6 ping 777 0 0" >> $@
+ 	echo "dir /lib 755 0 0" >> $@
+ 	echo "file /lib/libc.so $(MUSL_PATH)/lib/libc.so 755 0 0" >> $@
+@@ -260,8 +260,8 @@ $(KERNEL_BUILD_PATH)/.config: kernel.con
+ 	cd $(KERNEL_BUILD_PATH) && ARCH=$(KERNEL_ARCH) $(KERNEL_PATH)/scripts/kconfig/merge_config.sh -n $(KERNEL_BUILD_PATH)/.config $(KERNEL_BUILD_PATH)/minimal.config
+ 	$(if $(findstring yes,$(DEBUG_KERNEL)),cp debug.config $(KERNEL_BUILD_PATH) && cd $(KERNEL_BUILD_PATH) && ARCH=$(KERNEL_ARCH) $(KERNEL_PATH)/scripts/kconfig/merge_config.sh -n $(KERNEL_BUILD_PATH)/.config debug.config,)
+ 
+-$(KERNEL_BZIMAGE): $(KERNEL_BUILD_PATH)/.config $(BUILD_PATH)/init-cpio-spec.txt $(MUSL_PATH)/lib/libc.so $(IPERF_PATH)/src/iperf3 $(IPUTILS_PATH)/ping $(BASH_PATH)/bash $(IPROUTE2_PATH)/misc/ss $(IPROUTE2_PATH)/ip/ip $(IPTABLES_PATH)/iptables/xtables-multi $(NMAP_PATH)/ncat/ncat $(WIREGUARD_TOOLS_PATH)/src/tools/wg $(BUILD_PATH)/init ../netns.sh $(WIREGUARD_SOURCES)
+-	$(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE) CC="$(NOPIE_GCC)"
++$(KERNEL_BZIMAGE): $(KERNEL_BUILD_PATH)/.config $(BUILD_PATH)/init-cpio-spec.txt $(MUSL_PATH)/lib/libc.so $(IPERF_PATH)/src/iperf3 $(IPUTILS_PATH)/ping $(BASH_PATH)/bash $(IPROUTE2_PATH)/misc/ss $(IPROUTE2_PATH)/ip/ip $(IPTABLES_PATH)/iptables/xtables-legacy-multi $(NMAP_PATH)/ncat/ncat $(WIREGUARD_TOOLS_PATH)/src/wg $(BUILD_PATH)/init ../netns.sh $(WIREGUARD_SOURCES)
++	$(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE)
+ 
+ $(BUILD_PATH)/include/linux/.installed: | $(KERNEL_BUILD_PATH)/.config
+ 	$(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) INSTALL_HDR_PATH=$(BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE) headers_install
+@@ -280,7 +280,7 @@ $(BUILD_PATH)/include/.installed: $(MUSL
+ 
+ $(MUSL_CC): $(MUSL_PATH)/lib/libc.so
+ 	sh $(MUSL_PATH)/tools/musl-gcc.specs.sh $(BUILD_PATH)/include $(MUSL_PATH)/lib /lib/ld-linux.so.1 > $(BUILD_PATH)/musl-gcc.specs
+-	printf '#!/bin/sh\nexec "$(REAL_CC)" --specs="$(BUILD_PATH)/musl-gcc.specs" -fno-stack-protector -no-pie "$$@"\n' > $(BUILD_PATH)/musl-gcc
++	printf '#!/bin/sh\nexec "$(REAL_CC)" --specs="$(BUILD_PATH)/musl-gcc.specs" "$$@"\n' > $(BUILD_PATH)/musl-gcc
+ 	chmod +x $(BUILD_PATH)/musl-gcc
+ 
+ $(IPERF_PATH)/.installed: $(IPERF_TAR)
+@@ -291,7 +291,7 @@ $(IPERF_PATH)/.installed: $(IPERF_TAR)
+ 	touch $@
+ 
+ $(IPERF_PATH)/src/iperf3: | $(IPERF_PATH)/.installed $(USERSPACE_DEPS)
+-	cd $(IPERF_PATH) && CFLAGS="$(CFLAGS) -D_GNU_SOURCE" ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared
++	cd $(IPERF_PATH) && CFLAGS="$(CFLAGS) -D_GNU_SOURCE" ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared --with-openssl=no
+ 	$(MAKE) -C $(IPERF_PATH)
+ 	$(STRIP) -s $@
+ 
+@@ -308,8 +308,8 @@ $(WIREGUARD_TOOLS_PATH)/.installed: $(WI
+ 	flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
+ 	touch $@
+ 
+-$(WIREGUARD_TOOLS_PATH)/src/tools/wg: | $(WIREGUARD_TOOLS_PATH)/.installed $(LIBMNL_PATH)/src/.libs/libmnl.a $(USERSPACE_DEPS)
+-	LDFLAGS="$(LDFLAGS) -L$(LIBMNL_PATH)/src/.libs" $(MAKE) -C $(WIREGUARD_TOOLS_PATH)/src/tools LIBMNL_CFLAGS="-I$(LIBMNL_PATH)/include" LIBMNL_LDLIBS="-lmnl" wg
++$(WIREGUARD_TOOLS_PATH)/src/wg: | $(WIREGUARD_TOOLS_PATH)/.installed $(LIBMNL_PATH)/src/.libs/libmnl.a $(USERSPACE_DEPS)
++	LDFLAGS="$(LDFLAGS) -L$(LIBMNL_PATH)/src/.libs" $(MAKE) -C $(WIREGUARD_TOOLS_PATH)/src LIBMNL_CFLAGS="-I$(LIBMNL_PATH)/include" LIBMNL_LDLIBS="-lmnl" wg
+ 	$(STRIP) -s $@
+ 
+ $(BUILD_PATH)/init: init.c | $(USERSPACE_DEPS)
+@@ -323,7 +323,8 @@ $(IPUTILS_PATH)/.installed: $(IPUTILS_TA
+ 	touch $@
+ 
+ $(IPUTILS_PATH)/ping: | $(IPUTILS_PATH)/.installed $(USERSPACE_DEPS)
+-	$(MAKE) -C $(IPUTILS_PATH) USE_CAP=no USE_IDN=no USE_NETTLE=no USE_CRYPTO=no ping
++	sed -i /atexit/d $(IPUTILS_PATH)/ping.c
++	cd $(IPUTILS_PATH) && $(CC) $(CFLAGS) -std=c99 -o $@ ping.c ping_common.c ping6_common.c iputils_common.c -D_GNU_SOURCE -D'IPUTILS_VERSION(f)=f' -lresolv $(LDFLAGS)
+ 	$(STRIP) -s $@
+ 
+ $(BASH_PATH)/.installed: $(BASH_TAR)
+@@ -357,7 +358,7 @@ $(IPTABLES_PATH)/.installed: $(IPTABLES_
+ 	sed -i -e "/nfnetlink=[01]/s:=[01]:=0:" -e "/nfconntrack=[01]/s:=[01]:=0:" $(IPTABLES_PATH)/configure
+ 	touch $@
+ 
+-$(IPTABLES_PATH)/iptables/xtables-multi: | $(IPTABLES_PATH)/.installed $(LIBMNL_PATH)/src/.libs/libmnl.a $(USERSPACE_DEPS)
++$(IPTABLES_PATH)/iptables/xtables-legacy-multi: | $(IPTABLES_PATH)/.installed $(LIBMNL_PATH)/src/.libs/libmnl.a $(USERSPACE_DEPS)
+ 	cd $(IPTABLES_PATH) && PKG_CONFIG_LIBDIR="$(LIBMNL_PATH)" ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared --disable-nftables --disable-bpf-compiler --disable-nfsynproxy --disable-libipq --with-kernel=$(BUILD_PATH)/include
+ 	$(MAKE) -C $(IPTABLES_PATH)
+ 	$(STRIP) -s $@
+@@ -368,8 +369,9 @@ $(NMAP_PATH)/.installed: $(NMAP_TAR)
+ 	touch $@
+ 
+ $(NMAP_PATH)/ncat/ncat: | $(NMAP_PATH)/.installed $(USERSPACE_DEPS)
+-	cd $(NMAP_PATH) && ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared --without-ndiff --without-zenmap --without-nping --with-libpcap=included --with-libpcre=included --with-libdnet=included --without-liblua --with-liblinear=included --without-nmap-update --without-openssl --with-pcap=linux
+-	$(MAKE) -C $(NMAP_PATH) build-ncat
++	cd $(NMAP_PATH) && ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared --without-ndiff --without-zenmap --without-nping --with-libpcap=included --with-libpcre=included --with-libdnet=included --without-liblua --with-liblinear=included --without-nmap-update --without-openssl --with-pcap=linux --without-libssh
++	$(MAKE) -C $(NMAP_PATH)/libpcap
++	$(MAKE) -C $(NMAP_PATH)/ncat
+ 	$(STRIP) -s $@
+ 
+ clean:
+@@ -379,7 +381,7 @@ distclean: clean
+ 	rm -rf $(DISTFILES_PATH)
+ 
+ menuconfig: $(KERNEL_BUILD_PATH)/.config
+-	$(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE) CC="$(NOPIE_GCC)" menuconfig
++	$(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE) menuconfig
+ 
+ .PHONY: qemu build clean distclean menuconfig
+ .DELETE_ON_ERROR:
+--- a/tools/testing/selftests/wireguard/qemu/arch/m68k.config
++++ b/tools/testing/selftests/wireguard/qemu/arch/m68k.config
+@@ -1,9 +1,9 @@
+ CONFIG_MMU=y
++CONFIG_M68KCLASSIC=y
+ CONFIG_M68040=y
+ CONFIG_MAC=y
+ CONFIG_SERIAL_PMACZILOG=y
+ CONFIG_SERIAL_PMACZILOG_TTYS=y
+ CONFIG_SERIAL_PMACZILOG_CONSOLE=y
+-CONFIG_CMDLINE_BOOL=y
+ CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1"
+ CONFIG_FRAME_WARN=1024
+--- a/tools/testing/selftests/wireguard/qemu/init.c
++++ b/tools/testing/selftests/wireguard/qemu/init.c
+@@ -21,6 +21,7 @@
+ #include <sys/reboot.h>
+ #include <sys/utsname.h>
+ #include <sys/sendfile.h>
++#include <sys/sysmacros.h>
+ #include <linux/random.h>
+ #include <linux/version.h>
+ 
+--- a/tools/testing/selftests/wireguard/qemu/kernel.config
++++ b/tools/testing/selftests/wireguard/qemu/kernel.config
+@@ -39,6 +39,7 @@ CONFIG_PRINTK=y
+ CONFIG_KALLSYMS=y
+ CONFIG_BUG=y
+ CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
++CONFIG_JUMP_LABEL=y
+ CONFIG_EMBEDDED=n
+ CONFIG_BASE_FULL=y
+ CONFIG_FUTEX=y
+@@ -55,6 +56,7 @@ CONFIG_NO_HZ_IDLE=y
+ CONFIG_NO_HZ_FULL=n
+ CONFIG_HZ_PERIODIC=n
+ CONFIG_HIGH_RES_TIMERS=y
++CONFIG_COMPAT_32BIT_TIME=y
+ CONFIG_ARCH_RANDOM=y
+ CONFIG_FILE_LOCKING=y
+ CONFIG_POSIX_TIMERS=y