From 45f0a5d5438e755ae1ab058fb1b3b73331916418 Mon Sep 17 00:00:00 2001
From: Vincent Li <vincent.mc.li@gmail.com>
Date: Wed, 21 Feb 2024 23:26:07 +0000
Subject: [PATCH] Add lfs libbpf 1.3.0 add-on

follow [0] to add libbpf add-on for bpf user space
program to open,load,attach bpf program.

to build libbpf add-on, follow [1] first, then follow [0]

[0] https://www.ipfire.org/docs/devel/ipfire-2-x/addon-howto
[1] https://www.ipfire.org/docs/devel/ipfire-2-x/build-howto

Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
---
 config/rootfiles/common/libbpf |  4 ++
 lfs/libbpf                     | 77 ++++++++++++++++++++++++++++++++++
 make.sh                        |  1 +
 3 files changed, 82 insertions(+)
 create mode 100644 config/rootfiles/common/libbpf
 create mode 100644 lfs/libbpf

diff --git a/config/rootfiles/common/libbpf b/config/rootfiles/common/libbpf
new file mode 100644
index 000000000..f77715fe2
--- /dev/null
+++ b/config/rootfiles/common/libbpf
@@ -0,0 +1,4 @@
+usr/lib/libbpf.a
+usr/lib/libbpf.so
+usr/lib/libbpf.so.1
+usr/lib/libbpf.so.1.3.0
diff --git a/lfs/libbpf b/lfs/libbpf
new file mode 100644
index 000000000..fda9ad240
--- /dev/null
+++ b/lfs/libbpf
@@ -0,0 +1,77 @@
+###############################################################################
+#                                                                             #
+# IPFire.org - A linux based firewall                                         #
+# Copyright (C) 2007-2023  IPFire Team  <info@ipfire.org>                     #
+#                                                                             #
+# This program is free software: you can redistribute it and/or modify        #
+# it under the terms of the GNU General Public License as published by        #
+# the Free Software Foundation, either version 3 of the License, or           #
+# (at your option) any later version.                                         #
+#                                                                             #
+# This program is distributed in the hope that it will be useful,             #
+# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
+# GNU General Public License for more details.                                #
+#                                                                             #
+# You should have received a copy of the GNU General Public License           #
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
+#                                                                             #
+###############################################################################
+
+###############################################################################
+# Definitions
+###############################################################################
+
+include Config
+
+VER        = 1.3.0
+
+THISAPP    = libbpf-$(VER)
+DL_FILE    = $(THISAPP).tar.gz
+DL_FROM    = $(URL_IPFIRE)
+DIR_APP    = $(DIR_SRC)/$(THISAPP)
+TARGET     = $(DIR_INFO)/$(THISAPP)
+
+###############################################################################
+# Top-level Rules
+###############################################################################
+
+objects = $(DL_FILE)
+
+$(DL_FILE) = $(DL_FROM)/$(DL_FILE)
+
+$(DL_FILE)_BLAKE2 = 5ee0a45cd06be482c9523ec2a9bb26cf12b89df23f515b037badda868770069d5ffb751c011222b86b1d43034a1cdd537cb263883ed0645641548adc9c9896eb
+
+install : $(TARGET)
+
+check : $(patsubst %,$(DIR_CHK)/%,$(objects))
+
+download :$(patsubst %,$(DIR_DL)/%,$(objects))
+
+b2 : $(subst %,%_BLAKE2,$(objects))
+
+###############################################################################
+# Downloading, checking, b2sum
+###############################################################################
+
+$(patsubst %,$(DIR_CHK)/%,$(objects)) :
+	@$(CHECK)
+
+$(patsubst %,$(DIR_DL)/%,$(objects)) :
+	@$(LOAD)
+
+$(subst %,%_BLAKE2,$(objects)) :
+	@$(B2SUM)
+
+###############################################################################
+# Installation Details
+###############################################################################
+
+$(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
+	@$(PREBUILD)
+	@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar zxf $(DIR_DL)/$(DL_FILE)
+
+	cd $(DIR_APP)/src && make $(MAKETUNING)
+	cd $(DIR_APP)/src && make install
+	@rm -rf $(DIR_APP)
+	@$(POSTBUILD)
diff --git a/make.sh b/make.sh
index 4f9dfef79..1c3d9d6ad 100755
--- a/make.sh
+++ b/make.sh
@@ -1109,6 +1109,7 @@ buildipfire() {
   lfsmake2 libcap
   lfsmake2 libcap-ng
   lfsmake2 libpcap
+  lfsmake2 libbpf
   lfsmake2 ppp
   lfsmake2 pptp
   lfsmake2 unzip