initial buildroot for linux 5.15

package/bridge-utils/0001-fix-build-on-musl.patch

@@ -0,0 +1,51 @@
+From 1d5a2e0f88e0c53fede03632fa92ffade5e79ac5 Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Sun, 11 Apr 2021 10:04:59 +0200
+Subject: [PATCH] fix build on musl
+
+Build on musl is broken since version 1.7.1 and commit
+a1f20223cfcf7b9eae8c9e7e7a07e7bf1377f65b:
+
+libbridge_devif.c: In function 'fpopen':
+libbridge_devif.c:33:12: error: 'PATH_MAX' undeclared (first use in this function); did you mean 'AF_MAX'?
+   33 |  char path[PATH_MAX];
+      |            ^~~~~~~~
+      |            AF_MAX
+
+Fixes:
+ - http://autobuild.buildroot.org/results/0f080ff6913595ee2732b93206e5001c837c1bcc
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Upstream status: sent to Stephen Hemminger <sthemmin@microsoft.com>]
+---
+ libbridge/libbridge_devif.c | 1 +
+ libbridge/libbridge_init.c  | 1 +
+ 2 files changed, 2 insertions(+)
+
+diff --git a/libbridge/libbridge_devif.c b/libbridge/libbridge_devif.c
+index 8b7d954..6c679f6 100644
+--- a/libbridge/libbridge_devif.c
++++ b/libbridge/libbridge_devif.c
+@@ -21,6 +21,7 @@
+ #include <stdlib.h>
+ #include <unistd.h>
+ #include <errno.h>
++#include <limits.h>
+ #include <string.h>
+ #include <dirent.h>
+ #include <fcntl.h>
+diff --git a/libbridge/libbridge_init.c b/libbridge/libbridge_init.c
+index c914971..83a97cd 100644
+--- a/libbridge/libbridge_init.c
++++ b/libbridge/libbridge_init.c
+@@ -20,6 +20,7 @@
+ #include <stdlib.h>
+ #include <unistd.h>
+ #include <errno.h>
++#include <limits.h>
+ #include <string.h>
+ #include <dirent.h>
+ #include <sys/types.h>
+-- 
+2.30.2
+

package/bridge-utils/Config.in

@@ -0,0 +1,11 @@
+config BR2_PACKAGE_BRIDGE_UTILS
+	bool "bridge-utils"
+	help
+	  Manage ethernet bridging; a way to connect networks together
+	  to form a larger network.
+
+	  This utility is DEPRECATED. No new features will ever be
+	  added. Instead use the bridge command from the iproute2
+	  package which supports more features.
+
+	  https://git.kernel.org/cgit/linux/kernel/git/shemminger/bridge-utils.git/

package/bridge-utils/bridge-utils.hash

@@ -0,0 +1,5 @@
+# From https://mirrors.edge.kernel.org/pub/linux/utils/net/bridge-utils/sha256sums.asc
+sha256  a61d8be4f1a1405c60c8ef38d544f0c18c05b33b9b07e5b4b31033536165e60e  bridge-utils-1.7.1.tar.xz
+
+# locally computed
+sha256  995a31f60a9ddb4c609214cc7d17ca94cc3cbc7f37e1e64dba81e7f8ea9d4f91  COPYING

package/bridge-utils/bridge-utils.mk

@@ -0,0 +1,20 @@
+################################################################################
+#
+# bridge-utils
+#
+################################################################################
+
+BRIDGE_UTILS_VERSION = 1.7.1
+BRIDGE_UTILS_SITE = $(BR2_KERNEL_MIRROR)/linux/utils/net/bridge-utils
+BRIDGE_UTILS_SOURCE = bridge-utils-$(BRIDGE_UTILS_VERSION).tar.xz
+BRIDGE_UTILS_AUTORECONF = YES
+BRIDGE_UTILS_LICENSE = GPL-2.0+
+BRIDGE_UTILS_LICENSE_FILES = COPYING
+BRIDGE_UTILS_CPE_ID_VENDOR = kernel
+BRIDGE_UTILS_SELINUX_MODULES = brctl
+
+# Avoid using the host's headers. Location is not important as
+# required headers will anyway be found from within the sysroot.
+BRIDGE_UTILS_CONF_OPTS = --with-linux-headers=$(STAGING_DIR)/usr/include
+
+$(eval $(autotools-package))