diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2e1c626
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+SOURCES/mlx4-4.18.0-315.el8.tar.xz
diff --git a/.kmod-mlx4.metadata b/.kmod-mlx4.metadata
new file mode 100644
index 0000000..496d81b
--- /dev/null
+++ b/.kmod-mlx4.metadata
@@ -0,0 +1 @@
+87595f4864caa2e93d21bb1aeae4168431ffe22b SOURCES/mlx4-4.18.0-315.el8.tar.xz
diff --git a/SOURCES/0001-disable-mlx4_en.patch b/SOURCES/0001-disable-mlx4_en.patch
new file mode 100644
index 0000000..b7830c6
--- /dev/null
+++ b/SOURCES/0001-disable-mlx4_en.patch
@@ -0,0 +1,4 @@
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -8 +7,0 @@
+-obj-$(CONFIG_MLX4_EN)               += mlx4_en.o
diff --git a/SOURCES/0002-enable-mlx4_core-gen2.patch b/SOURCES/0002-enable-mlx4_core-gen2.patch
new file mode 100644
index 0000000..a85cec0
--- /dev/null
+++ b/SOURCES/0002-enable-mlx4_core-gen2.patch
@@ -0,0 +1,11 @@
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -1,6 +1,8 @@
+ # SPDX-License-Identifier: GPL-2.0
+ obj-$(CONFIG_MLX4_CORE)		+= mlx4_core.o
+ 
++ccflags-y += -DCONFIG_MLX4_CORE_GEN2
++
+ mlx4_core-y :=	alloc.o catas.o cmd.o cq.o eq.o fw.o fw_qos.o icm.o intf.o \
+ 		main.o mcg.o mr.o pd.o port.o profile.o qp.o reset.o sense.o \
+ 		srq.o resource_tracker.o crdump.o
diff --git a/SPECS/kmod-mlx4.spec b/SPECS/kmod-mlx4.spec
new file mode 100644
index 0000000..1e1697a
--- /dev/null
+++ b/SPECS/kmod-mlx4.spec
@@ -0,0 +1,128 @@
+%global pkg mlx4
+
+%global kernel_version_min 4.18.0-315.el8
+
+# To pick a specific kernel use `--define "kernel_version 4.18.0-315.el8"`
+# Otherwise the latest installed kernel-devel version later than
+# %%{kernel_version_min} will be used.
+
+%global kernel_version_latest %({ echo %{kernel_version_min}; rpm --query kernel-devel --queryformat '%%{VERSION}-%%{RELEASE}\\\n' | grep -v "package kernel-devel is not installed"; } | sort -V | sed -e '0,/^%{kernel_version_min}$/d' | tail -n 1)
+
+%if "%{kernel_version_latest}" != ""
+%{!?kernel_version:%{expand:%%global kernel_version %{kernel_version_latest}}}
+%endif
+
+%global _use_internal_dependency_generator 0
+
+%global debug_package %{nil}
+
+%global __spec_install_post \
+  %{?__debug_package:%{__debug_install_post}} \
+  %{__arch_install_post} \
+  %{__os_install_post} \
+  %{__mod_compress_install_post}
+
+%global __mod_compress_install_post find %{buildroot}/lib/modules -type f -name \*.ko -exec xz \{\} \\;
+
+
+Name:             kmod-%{pkg}
+Version:          4.18.0
+Release:          315%{?dist}
+Summary:          Mellanox ConnectX HCA (%{pkg}) driver
+
+License:          GPLv2 and (BSD or GPLv2)
+URL:              https://www.kernel.org/
+
+Source0:          %{pkg}-%{kernel_version_min}.tar.xz
+Patch1:           0001-disable-mlx4_en.patch
+Patch2:           0002-enable-mlx4_core-gen2.patch
+
+ExclusiveArch:    x86_64 aarch64
+
+BuildRequires:    elfutils-libelf-devel
+BuildRequires:    gcc
+BuildRequires:    kernel-abi-whitelists
+BuildRequires:    kernel-rpm-macros
+BuildRequires:    kmod
+BuildRequires:    make
+BuildRequires:    redhat-rpm-config
+BuildRequires:    xz
+
+%{!?kernel_version:
+BuildRequires:    kernel-devel >= %{kernel_version_min}
+}
+
+%{?kernel_version:
+BuildRequires:    kernel-devel = %{kernel_version}
+
+Supplements:      kernel = %{kernel_version}
+
+Requires:         (kernel = %{kernel_version} if kernel)
+
+Provides:         kernel-modules = %{kernel_version}.%{_arch}
+}
+
+Requires(post):   /usr/sbin/depmod
+Requires(postun): /usr/sbin/depmod
+
+Provides:         %{name} = %{?epoch:%{epoch}:}%{version}-%{release}
+
+
+%description
+This package provides the Mellanos ConnectX HCA (%{pkg}) driver. Compared to
+the in-kernel driver this driver re-enables support for deprecated Mellanox
+Gen2 and ConnectX-2 adapters:
+
+- 0x15B3:0x1002: Mellanox ConnectX-2 MT25400
+- 0x15B3:0x6340: Mellanox Hermon SDR
+- 0x15B3:0x634A: Mellanox Hermon DDR
+- 0x15B3:0x6354: Mellanox Hermon QDR
+- 0x15B3:0x6368: Mellanox Hermon EN 10GigE
+- 0x15B3:0x6372: Mellanox ConnectX EN 10GBASE-T
+- 0x15B3:0x6732: Mellanox Hermon DDR Gen2
+- 0x15B3:0x673C: Mellanox Hermon QDR Gen2
+- 0x15B3:0x6746: Mellanox ConnectX EN 40GigE PCIe Gen2 5GT/s
+- 0x15B3:0x6750: Mellanox Hermon EN 10GigE Gen2
+- 0x15B3:0x675A: Mellanox ConnectX EN 10GBASE-T Gen2
+- 0x15B3:0x6764: Mellanox ConnectX EN 10 GigE PCIe Gen2
+- 0x15B3:0x676E: Mellanox ConnectX-2 40GigE PCIe Gen2
+
+
+%prep
+%autosetup -p1 -n %{pkg}-%{kernel_version_min}
+
+
+%build
+pushd src
+%{__make} -C /usr/src/kernels/%{kernel_version}.%{_arch} %{?_smp_mflags} M=$PWD modules
+popd
+
+
+%install
+%{__install} -D -t %{buildroot}/lib/modules/%{kernel_version}.%{_arch}/extra/drivers/net/ethernet/mellanox/%{pkg} src/%{pkg}_core.ko
+
+# Make .ko objects temporarily executable for automatic stripping
+find %{buildroot}/lib/modules -type f -name \*.ko -exec chmod u+x \{\} \+
+
+
+%clean
+%{__rm} -rf %{buildroot}
+
+
+%post
+/usr/sbin/depmod -aeF /lib/modules/%{kernel_version}.%{_arch}/System.map %{kernel_version}.%{_arch}
+
+
+%postun
+/usr/sbin/depmod -aeF /lib/modules/%{kernel_version}.%{_arch}/System.map %{kernel_version}.%{_arch}
+
+
+%files
+%defattr(644,root,root,755)
+/lib/modules/%{kernel_version}.%{_arch}
+%license COPYING
+
+
+%changelog
+* Fri Jul 23 2021 Peter Georg <peter.georg@physik.uni-regensburg.de> - 4.18-315
+- Initial version