From 404aa7e10c6be4f95eb0703cd835469abf137037 Mon Sep 17 00:00:00 2001
From: Indrek Ardel <indrek@ardel.eu>
Date: Sun, 10 Mar 2024 03:53:43 +0200
Subject: Kernel: T4022: add RTSP netfilter helper kernel module

---
 packages/linux-kernel/.gitignore        |  1 +
 packages/linux-kernel/Jenkinsfile       |  5 +++++
 packages/linux-kernel/build-nat-rtsp.sh | 38 +++++++++++++++++++++++++++++++++
 3 files changed, 44 insertions(+)
 create mode 100755 packages/linux-kernel/build-nat-rtsp.sh

(limited to 'packages')

diff --git a/packages/linux-kernel/.gitignore b/packages/linux-kernel/.gitignore
index d61cc4da..97e392e3 100644
--- a/packages/linux-kernel/.gitignore
+++ b/packages/linux-kernel/.gitignore
@@ -7,6 +7,7 @@
 /vyos-drivers-intel*
 /vyos-drivers-realtek*
 /ovpn-dco
+/nat-rtsp
 /jool*
 /qat*
 /QAT*
diff --git a/packages/linux-kernel/Jenkinsfile b/packages/linux-kernel/Jenkinsfile
index 50943eca..a4c9f274 100644
--- a/packages/linux-kernel/Jenkinsfile
+++ b/packages/linux-kernel/Jenkinsfile
@@ -69,6 +69,11 @@ def pkgList = [
     ['name': 'ovpn-dco','scmCommit': 'v0.2.20231117',
      'scmUrl': 'https://github.com/OpenVPN/ovpn-dco',
      'buildCmd': 'cd ..; ./build-openvpn-dco.sh'],
+
+    // RTSP netfilter helper
+    ['name': 'nat-rtsp', 'scmCommit': '475af0a',
+     'scmUrl': 'https://github.com/maru-sama/rtsp-linux.git',
+     'buildCmd': 'cd ..; ./build-nat-rtsp.sh'],
 ]
 
 // Start package build using library function from https://github.com/vyos/vyos-build
diff --git a/packages/linux-kernel/build-nat-rtsp.sh b/packages/linux-kernel/build-nat-rtsp.sh
new file mode 100755
index 00000000..ec7d19a6
--- /dev/null
+++ b/packages/linux-kernel/build-nat-rtsp.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+CWD=$(pwd)
+KERNEL_VAR_FILE=${CWD}/kernel-vars
+
+SRC=${CWD}/nat-rtsp
+if [ ! -d ${SRC} ]; then
+    echo "nat-rtsp source not found"
+    exit 1
+fi
+
+if [ ! -f ${KERNEL_VAR_FILE} ]; then
+    echo "Kernel variable file '${KERNEL_VAR_FILE}' does not exist, run ./build_kernel.sh first"
+    exit 1
+fi
+
+. ${KERNEL_VAR_FILE}
+
+cd ${SRC} && make KERNELDIR=$KERNEL_DIR
+
+# Copy binary to package directory
+DEBIAN_DIR=tmp/lib/modules/${KERNEL_VERSION}${KERNEL_SUFFIX}/extra
+mkdir -p ${DEBIAN_DIR}
+cp nf_conntrack_rtsp.ko nf_nat_rtsp.ko ${DEBIAN_DIR}
+
+DEBIAN_POSTINST="${CWD}/vyos-nat-rtsp.postinst"
+echo "#!/bin/sh" > ${DEBIAN_POSTINST}
+echo "/sbin/depmod -a ${KERNEL_VERSION}${KERNEL_SUFFIX}" >> ${DEBIAN_POSTINST}
+
+# Build Debian Package
+fpm --input-type dir --output-type deb --name nat-rtsp \
+    --version $(git describe --tags --always) --deb-compression gz \
+    --maintainer "VyOS Package Maintainers <maintainers@vyos.net>" \
+    --description "Connection tracking and NAT support for RTSP" \
+    --depends linux-image-${KERNEL_VERSION}${KERNEL_SUFFIX} \
+    --after-install ${DEBIAN_POSTINST} \
+    --license "GPL2" --chdir tmp
+
+mv *.deb ..
-- 
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