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package/ebtables: remove KERNEL_64_USERSPACE_32 workaround
This workaround breaks build with gcc 14.
Upstream developers acknowledged[1] the 32/64 compatibility issue more
than 3 years ago, but no proper fix has been applied. Specifically, for
aarch64 we don't even enable BR2_KERNEL_64_USERLAND_32, so this
workaround is not effective there.
The least we can do is make ebtables depend on
!BR2_KERNEL_64_USERLAND_32.
[1] https://lore.kernel.org/all/20210518181730.13436-1-patrickdepinguin@gmail.com/
Fixes:
http://autobuild.buildroot.net/results/680674c2b61209b505efa022a8fd9751ddc5fd47/
http://autobuild.buildroot.net/results/60f8f5f087111ec3f300dc7979363de5a9f64f08/
Cc: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit c5d6cde7b6)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Baruch Siach
Peter Korsgaard
parent
dfb9f3412a
commit
96706bc7fe
@ -329,8 +329,6 @@ package/dvdrw-tools/0002-Include-sysmacros.h-to-compile-with-newer-gcc.patch Ups
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package/earlyoom/0001-main.c-fix-build-with-kernel-4.3.patch Upstream
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package/earlyoom/S02earlyoom Indent Shellcheck
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package/ebtables/0001-replace-ebtables-save-perl-script-with-bash.patch Upstream
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package/ebtables/0002-ebtables.h-restore-KERNEL_64_USERSPACE_32-checks.patch Upstream
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package/ebtables/0003-configure.ac-add-option-enable-kernel-64-userland-32.patch Upstream
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package/ecryptfs-utils/0001-musl.patch Upstream
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package/ecryptfs-utils/0002-openssl110.patch Upstream
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package/ecryptfs-utils/0003-fix-parallel-build-issue.patch Upstream
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@ -1,105 +0,0 @@
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From 7297a8ef3cab3b0faf1426622ee902a2144e2e89 Mon Sep 17 00:00:00 2001
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From: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
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Date: Wed, 24 Mar 2021 11:27:14 +0100
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Subject: [PATCH] ebtables.h: restore KERNEL_64_USERSPACE_32 checks
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Commit e6359eedfbf497e52d52451072aea4713ed80a88 replaced the file ebtables.h
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but removed the usage of KERNEL_64_USERSPACE_32. This breaks boards where
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such flag is relevant, with following messages:
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[ 6364.971346] kernel msg: ebtables bug: please report to author: Standard target size too big
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Unable to update the kernel. Two possible causes:
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1. Multiple ebtables programs were executing simultaneously. The ebtables
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userspace tool doesn't by default support multiple ebtables programs running
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concurrently. The ebtables option --concurrent or a tool like flock can be
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used to support concurrent scripts that update the ebtables kernel tables.
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2. The kernel doesn't support a certain ebtables extension, consider
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recompiling your kernel or insmod the extension.
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Analysis shows that the structure 'ebt_replace' passed from userspace
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ebtables to the kernel, is too small, i.e 80 bytes instead of 120 in case of
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64-bit kernel.
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Note that the ebtables build system seems to assume that 'sparc64' is the
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only case where KERNEL_64_USERSPACE_32 is relevant, but this is not true.
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This situation can happen on many architectures, especially in embedded
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systems. For example, an Aarch64 processor with kernel in 64-bit but
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userland build for 32-bit Arm. Or a 64-bit MIPS Octeon III processor, with
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userland running in the 'n32' ABI.
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Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
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Upstream-Status: http://patchwork.ozlabs.org/project/netfilter-devel/patch/20210518181730.13436-1-patrickdepinguin@gmail.com/
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---
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include/linux/netfilter_bridge/ebtables.h | 21 +++++++++++++++++++++
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1 file changed, 21 insertions(+)
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diff --git a/include/linux/netfilter_bridge/ebtables.h b/include/linux/netfilter_bridge/ebtables.h
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index 5be75f2..3c2b61e 100644
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--- a/include/linux/netfilter_bridge/ebtables.h
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+++ b/include/linux/netfilter_bridge/ebtables.h
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@@ -49,12 +49,21 @@ struct ebt_replace {
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/* total size of the entries */
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unsigned int entries_size;
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/* start of the chains */
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+#ifdef KERNEL_64_USERSPACE_32
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+ uint64_t hook_entry[NF_BR_NUMHOOKS];
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+#else
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struct ebt_entries *hook_entry[NF_BR_NUMHOOKS];
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+#endif
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/* nr of counters userspace expects back */
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unsigned int num_counters;
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/* where the kernel will put the old counters */
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+#ifdef KERNEL_64_USERSPACE_32
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+ uint64_t counters;
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+ uint64_t entries;
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+#else
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struct ebt_counter *counters;
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char *entries;
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+#endif
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};
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struct ebt_replace_kernel {
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@@ -129,6 +138,9 @@ struct ebt_entry_match {
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} u;
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/* size of data */
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unsigned int match_size;
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+#ifdef KERNEL_64_USERSPACE_32
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+ unsigned int pad;
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+#endif
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unsigned char data[0] __attribute__ ((aligned (__alignof__(struct ebt_replace))));
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};
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@@ -142,6 +154,9 @@ struct ebt_entry_watcher {
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} u;
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/* size of data */
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unsigned int watcher_size;
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+#ifdef KERNEL_64_USERSPACE_32
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+ unsigned int pad;
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+#endif
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unsigned char data[0] __attribute__ ((aligned (__alignof__(struct ebt_replace))));
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};
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@@ -155,6 +170,9 @@ struct ebt_entry_target {
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} u;
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/* size of data */
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unsigned int target_size;
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+#ifdef KERNEL_64_USERSPACE_32
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+ unsigned int pad;
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+#endif
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unsigned char data[0] __attribute__ ((aligned (__alignof__(struct ebt_replace))));
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};
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@@ -162,6 +180,9 @@ struct ebt_entry_target {
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struct ebt_standard_target {
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struct ebt_entry_target target;
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int verdict;
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+#ifdef KERNEL_64_USERSPACE_32
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+ unsigned int pad;
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+#endif
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};
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/* one entry */
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--
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2.26.2
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@ -1,51 +0,0 @@
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From ebf0236270b977a62c522bc32810bc9f8edc72d1 Mon Sep 17 00:00:00 2001
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From: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
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Date: Wed, 24 Mar 2021 13:40:14 +0100
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Subject: [PATCH] configure.ac: add option --enable-kernel-64-userland-32
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The ebtables build system seems to assume that 'sparc64' is the
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only case where KERNEL_64_USERSPACE_32 is relevant, but this is not true.
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This situation can happen on many architectures, especially in embedded
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systems. For example, an Aarch64 processor with kernel in 64-bit but
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userland build for 32-bit Arm. Or a 64-bit MIPS Octeon III processor, with
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userland running in the 'n32' ABI.
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While it is possible to set CFLAGS in the environment when calling the
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configure script, the caller would need to know to not only specify
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KERNEL_64_USERSPACE_32 but also the EBT_MIN_ALIGN value.
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Instead, add a configure option. All internal details can then be handled by
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the configure script.
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Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
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Upstream-Status: http://patchwork.ozlabs.org/project/netfilter-devel/patch/20210518181730.13436-2-patrickdepinguin@gmail.com/
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---
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configure.ac | 9 ++++++++-
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1 file changed, 8 insertions(+), 1 deletion(-)
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diff --git a/configure.ac b/configure.ac
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index c24ede3..3e89c0c 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -15,10 +15,17 @@ AS_IF([test "x$LOCKFILE" = x], [LOCKFILE="/var/lib/ebtables/lock"])
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regular_CFLAGS="-Wall -Wunused"
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regular_CPPFLAGS=""
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+
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case "$host" in
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sparc64-*)
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- regular_CPPFLAGS="$regular_CPPFLAGS -DEBT_MIN_ALIGN=8 -DKERNEL_64_USERSPACE_32";;
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+ enable_kernel_64_userland_32=yes ;;
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esac
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+AC_ARG_ENABLE([kernel-64-userland-32],
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+ AC_HELP_STRING([--enable-kernel-64-userland-32], [indicate that ebtables will be built as a 32-bit application but run under a 64-bit kernel])
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+)
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+AS_IF([test "x$enable_kernel_64_userland_32" = xyes],
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+ [regular_CPPFLAGS="$regular_CPPFLAGS -DEBT_MIN_ALIGN=8 -DKERNEL_64_USERSPACE_32"]
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+)
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AC_SUBST([regular_CFLAGS])
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AC_SUBST([regular_CPPFLAGS])
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--
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2.26.2
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@ -1,6 +1,8 @@
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config BR2_PACKAGE_EBTABLES
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bool "ebtables"
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depends on BR2_USE_MMU # fork()
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# https://lore.kernel.org/all/20210518181730.13436-1-patrickdepinguin@gmail.com/
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depends on !BR2_KERNEL_64_USERLAND_32
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help
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Ethernet bridge frame table administration
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@ -11,12 +11,6 @@ EBTABLES_LICENSE_FILES = COPYING
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EBTABLES_CPE_ID_VENDOR = netfilter
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EBTABLES_SELINUX_MODULES = iptables
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# for 0003-configure.ac-add-option-enable-kernel-64-userland-32.patch
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EBTABLES_AUTORECONF = YES
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ifeq ($(BR2_KERNEL_64_USERLAND_32),y)
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EBTABLES_CONF_OPTS += --enable-kernel-64-userland-32
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endif
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ifeq ($(BR2_PACKAGE_EBTABLES_UTILS_SAVE),y)
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define EBTABLES_INSTALL_TARGET_UTILS_SAVE
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$(INSTALL) -m 0755 -D $(@D)/ebtables-save.sh $(TARGET_DIR)/usr/sbin/ebtables-legacy-save
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@ -45,6 +45,7 @@ config BR2_PACKAGE_LIBVIRT_DAEMON
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bool "libvirtd"
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default y
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depends on BR2_INSTALL_LIBSTDCPP # nmap
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depends on !BR2_KERNEL_64_USERLAND_32 # ebtables
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select BR2_PACKAGE_BUSYBOX_SHOW_OTHERS
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select BR2_PACKAGE_DNSMASQ
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select BR2_PACKAGE_EBTABLES
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