initial buildroot for linux 5.15

package/arptables/0001-Fix-musl-build-issue.patch

@@ -0,0 +1,71 @@
+From cbf84a0bc377c6a368d30571f37ebfab27784697 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=B6rg=20Krause?= <joerg.krause@embedded.rocks>
+Date: Wed, 2 Dec 2015 04:57:33 +0100
+Subject: [PATCH 4/4] Fix musl build issue
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Due to clashes in the namespace between the Linux Kernel headers and the
+netinet headers building arptables with the musl C library fails.
+
+Best advice from the musl developers is to not include both headers in a
+userspace tool (see the thread on the musl mailing list [1], especially [2]).
+
+Since arptables only requires a few definitions from the Linux Kernel headers
+we opt-out the clashing header files and define the needed definitions.
+
+[1] http://www.openwall.com/lists/musl/2012/10/09/1
+[2] http://www.openwall.com/lists/musl/2012/10/11/1
+
+Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
+---
+ extensions/arpt_CLASSIFY.c    |  7 +++++++
+ include/linux/netfilter_arp.h | 11 +++++++++++
+ 2 files changed, 18 insertions(+)
+
+diff --git a/extensions/arpt_CLASSIFY.c b/extensions/arpt_CLASSIFY.c
+index cb5770b..c58129f 100644
+--- a/extensions/arpt_CLASSIFY.c
++++ b/extensions/arpt_CLASSIFY.c
+@@ -21,7 +21,14 @@
+ #include <stdio.h>
+ #include <getopt.h>
+ #include <arptables.h>
++
++#ifdef __KERNEL__
+ #include <linux/netfilter/xt_CLASSIFY.h>
++#else
++struct xt_classify_target_info {
++	uint32_t priority;
++};
++#endif
+ 
+ #define TC_H_MAJ_MASK (0xFFFF0000U)
+ #define TC_H_MIN_MASK (0x0000FFFFU)
+diff --git a/include/linux/netfilter_arp.h b/include/linux/netfilter_arp.h
+index 92bc6dd..2a63e82 100644
+--- a/include/linux/netfilter_arp.h
++++ b/include/linux/netfilter_arp.h
+@@ -5,7 +5,18 @@
+  * (C)2002 Rusty Russell IBM -- This code is GPL.
+  */
+ 
++#ifdef __KERNEL__
+ #include <linux/netfilter.h>
++#else
++/* Responses from hook functions. */
++#define NF_DROP 0
++#define NF_ACCEPT 1
++#define NF_STOLEN 2
++#define NF_QUEUE 3
++#define NF_REPEAT 4
++#define NF_STOP 5
++#define NF_MAX_VERDICT NF_STOP
++#endif
+ 
+ /* There is no PF_ARP. */
+ #define NF_ARP		0
+-- 
+2.6.2
+

package/arptables/Config.in

@@ -0,0 +1,12 @@
+config BR2_PACKAGE_ARPTABLES
+	bool "arptables-legacy"
+	depends on BR2_USE_MMU # needs fork()
+	help
+	  Legacy tool to set up, maintain, and inspect the tables of ARP
+	  rules.
+
+	  A more uptodate client of the arptables tool is provided in
+	  the iptables package. The new tool was formerly known as
+	  arptables-compat.
+
+	  http://git.netfilter.org/arptables

package/arptables/arptables.hash

@@ -0,0 +1,5 @@
+# From http://ftp.netfilter.org/pub/arptables/arptables-0.0.5.tar.gz.sha256sum
+sha256	4f9a0656ce5c90868f551cd4deeb2d04f33899667e1fb2818b64e432fe8f629c	arptables-0.0.5.tar.gz
+
+# Hash for license file
+sha256	ebdb8ae564c952792017ec680e2edd30443642216eb9f8a3d8fa166c0cb628c1	COPYING

package/arptables/arptables.mk

@@ -0,0 +1,22 @@
+################################################################################
+#
+# arptables
+#
+################################################################################
+
+ARPTABLES_VERSION = 0.0.5
+ARPTABLES_SITE = http://ftp.netfilter.org/pub/arptables
+ARPTABLES_LICENSE = GPL-2.0+
+ARPTABLES_LICENSE_FILES = COPYING
+
+define ARPTABLES_BUILD_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
+		CC="$(TARGET_CC)" COPT_FLAGS="$(TARGET_CFLAGS)"
+endef
+
+define ARPTABLES_INSTALL_TARGET_CMDS
+	$(INSTALL) -m 755 -D $(@D)/arptables-legacy \
+		$(TARGET_DIR)/usr/sbin/arptables-legacy
+endef
+
+$(eval $(generic-package))