package/batman-adv: fix build failures with Linux >= 6.12

The first two patches fix:

/home/autobuild/autobuild/instance-5/output-1/build/batman-adv-2024.2/net/batman-adv/distributed-arp-table.c:10:10: fatal error: asm/unaligned.h: No such file or directory

Which is a fallout out from Linux kernel upstream commit
5f60d5f6bbc12e782fac78110b0ee62698f3b576 that got merged in Linux
6.12.

Patch 0003 is needed due to the removal of NETIF_F_LLTX in upstream
Linux kernel commit 00d066a4d4edbe559ba6c35153da71d4b2b8a383 that got
merged in Linux 6.12.

Patch 0004 is needed due to the removal of NETIF_F_NETNS_LOCAL in
upstream Linux kernel commit 05c1280a2bcfca187fe7fa90bb240602cf54af0a
that got merged in Linux 6.12.

Fixes:

  https://autobuild.buildroot.org/results/4ac369f7fe9cd62de431fa02bc982465e8d1f806/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

package/batman-adv/0001-batman-adv-move-asm-unaligned.h-to-linux-unaligned.h.patch

@@ -0,0 +1,74 @@
+From 3b434d5878131cd45aa5c4dd906fe0e569b445d6 Mon Sep 17 00:00:00 2001
+From: Al Viro <viro@zeniv.linux.org.uk>
+Date: Tue, 1 Oct 2024 15:35:57 -0400
+Subject: [PATCH] batman-adv: move asm/unaligned.h to linux/unaligned.h
+
+asm/unaligned.h is always an include of asm-generic/unaligned.h;
+might as well move that thing to linux/unaligned.h and include
+that - there's nothing arch-specific in that header.
+
+auto-generated by the following:
+
+for i in `git grep -l -w asm/unaligned.h`; do
+	sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i
+done
+for i in `git grep -l -w asm-generic/unaligned.h`; do
+	sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i
+done
+git mv include/asm-generic/unaligned.h include/linux/unaligned.h
+git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h
+sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild
+sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
+
+Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
+Signed-off-by: Sven Eckelmann <sven@narfation.org>
+Upstream: https://git.open-mesh.org/batman-adv.git/commit/ee60832ebec47a023d634b06f9434103ec090aed
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+---
+ compat-include/linux/unaligned.h       | 20 ++++++++++++++++++++
+ net/batman-adv/distributed-arp-table.c |  2 +-
+ 2 files changed, 21 insertions(+), 1 deletion(-)
+ create mode 100644 compat-include/linux/unaligned.h
+
+diff --git a/compat-include/linux/unaligned.h b/compat-include/linux/unaligned.h
+new file mode 100644
+index 00000000..66d86646
+--- /dev/null
++++ b/compat-include/linux/unaligned.h
+@@ -0,0 +1,20 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/* Copyright (C) B.A.T.M.A.N. contributors:
++ *
++ * Marek Lindner, Simon Wunderlich
++ *
++ * This file contains macros for maintaining compatibility with older versions
++ * of the Linux kernel.
++ */
++
++#ifndef _NET_BATMAN_ADV_COMPAT_LINUX_UNALIGNED_H_
++#define _NET_BATMAN_ADV_COMPAT_LINUX_UNALIGNED_H_
++
++#include <linux/version.h>
++#if LINUX_VERSION_IS_GEQ(6, 12, 0)
++#include_next <linux/unaligned.h>
++#else
++#include <asm/unaligned.h>
++#endif
++
++#endif /* _NET_BATMAN_ADV_COMPAT_LINUX_UNALIGNED_H_ */
+diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
+index 4c7e8553..801eff8a 100644
+--- a/net/batman-adv/distributed-arp-table.c
++++ b/net/batman-adv/distributed-arp-table.c
+@@ -7,7 +7,7 @@
+ #include "distributed-arp-table.h"
+ #include "main.h"
+ 
+-#include <asm/unaligned.h>
++#include <linux/unaligned.h>
+ #include <linux/atomic.h>
+ #include <linux/bitops.h>
+ #include <linux/byteorder/generic.h>
+-- 
+2.47.1
+

package/batman-adv/0002-batman-adv-Reorder-includes-for-distributed-arp-tabl.patch

@@ -0,0 +1,39 @@
+From dc072c88ef0eaa80215dbc25923678c6a3d46e25 Mon Sep 17 00:00:00 2001
+From: Sven Eckelmann <sven@narfation.org>
+Date: Wed, 16 Oct 2024 09:23:06 +0200
+Subject: [PATCH] batman-adv: Reorder includes for distributed-arp-table.c
+
+The commit ee60832ebec4 ("batman-adv: move asm/unaligned.h to
+linux/unaligned.h") changed the include without adjusting the order (to
+match the rest of the file).
+
+Signed-off-by: Sven Eckelmann <sven@narfation.org>
+Upstream: https://git.open-mesh.org/batman-adv.git/commit/fd3a0eff09429719e61e60b7dc3d2a373183a5ad
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+---
+ net/batman-adv/distributed-arp-table.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
+index 801eff8a..48b72c2b 100644
+--- a/net/batman-adv/distributed-arp-table.c
++++ b/net/batman-adv/distributed-arp-table.c
+@@ -7,7 +7,6 @@
+ #include "distributed-arp-table.h"
+ #include "main.h"
+ 
+-#include <linux/unaligned.h>
+ #include <linux/atomic.h>
+ #include <linux/bitops.h>
+ #include <linux/byteorder/generic.h>
+@@ -32,6 +31,7 @@
+ #include <linux/stddef.h>
+ #include <linux/string.h>
+ #include <linux/udp.h>
++#include <linux/unaligned.h>
+ #include <linux/workqueue.h>
+ #include <net/arp.h>
+ #include <net/genetlink.h>
+-- 
+2.47.1
+

package/batman-adv/0003-batman-adv-convert-NETIF_F_LLTX-to-dev-lltx.patch

@@ -0,0 +1,40 @@
+From e8d6208a41c9b9912cac60ebad57d7dbe4b9786c Mon Sep 17 00:00:00 2001
+From: Alexander Lobakin <aleksander.lobakin@intel.com>
+Date: Thu, 29 Aug 2024 14:33:37 +0200
+Subject: [PATCH] batman-adv: convert NETIF_F_LLTX to dev->lltx
+
+NETIF_F_LLTX can't be changed via Ethtool and is not a feature,
+rather an attribute, very similar to IFF_NO_QUEUE (and hot).
+Free one netdev_features_t bit and make it a "hot" private flag.
+
+Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+[sven@narfation.org: add compat code]
+Signed-off-by: Sven Eckelmann <sven@narfation.org>
+Upstream: https://git.open-mesh.org/batman-adv.git/commit/b6d2c16d1a5f90e1aff1ca55d73ba4e7be03c2a0
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+---
+ net/batman-adv/soft-interface.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
+index 30ecbc2e..48cf3bd9 100644
+--- a/net/batman-adv/soft-interface.c
++++ b/net/batman-adv/soft-interface.c
+@@ -1021,8 +1021,12 @@ static void batadv_softif_init_early(struct net_device *dev)
+ 	dev->needs_free_netdev = true;
+ 	dev->priv_destructor = batadv_softif_free;
+ 	dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_NETNS_LOCAL;
+-	dev->features |= NETIF_F_LLTX;
+ 	dev->priv_flags |= IFF_NO_QUEUE;
++#if LINUX_VERSION_IS_GEQ(6, 12, 0) // UGLY_HACK_NEW
++	dev->lltx = true;
++#else // UGLY_HACK_OLD
++	dev->features |= NETIF_F_LLTX;
++#endif // UGLY_HACK_STOP
+ 
+ 	/* can't call min_mtu, because the needed variables
+ 	 * have not been initialized yet
+-- 
+2.47.1
+

package/batman-adv/0004-batman-adv-convert-NETIF_F_NETNS_LOCAL-to-dev-netns_.patch

@@ -0,0 +1,43 @@
+From 5315fd6f4db07dfb5c25949a3c7ac607feff863e Mon Sep 17 00:00:00 2001
+From: Alexander Lobakin <aleksander.lobakin@intel.com>
+Date: Thu, 29 Aug 2024 14:33:38 +0200
+Subject: [PATCH] batman-adv: convert NETIF_F_NETNS_LOCAL to dev->netns_local
+
+"Interface can't change network namespaces" is rather an attribute,
+not a feature, and it can't be changed via Ethtool.
+Make it a "cold" private flag instead of a netdev_feature and free
+one more bit.
+
+Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
+Signed-off-by: Paolo Abeni <pabeni@redhat.com>
+[sven@narfation.org: add compat code]
+Signed-off-by: Sven Eckelmann <sven@narfation.org>
+Upstream: https://git.open-mesh.org/batman-adv.git/commit/b0405a97957978a0aa46dde55d590e1cf0f4309e
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+---
+ net/batman-adv/soft-interface.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
+index 48cf3bd9..610bbaaa 100644
+--- a/net/batman-adv/soft-interface.c
++++ b/net/batman-adv/soft-interface.c
+@@ -1020,12 +1020,13 @@ static void batadv_softif_init_early(struct net_device *dev)
+ 	dev->netdev_ops = &batadv_netdev_ops;
+ 	dev->needs_free_netdev = true;
+ 	dev->priv_destructor = batadv_softif_free;
+-	dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_NETNS_LOCAL;
++	dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+ 	dev->priv_flags |= IFF_NO_QUEUE;
+ #if LINUX_VERSION_IS_GEQ(6, 12, 0) // UGLY_HACK_NEW
+ 	dev->lltx = true;
++	dev->netns_local = true;
+ #else // UGLY_HACK_OLD
+-	dev->features |= NETIF_F_LLTX;
++	dev->features |= NETIF_F_LLTX | NETIF_F_NETNS_LOCAL;
+ #endif // UGLY_HACK_STOP
+ 
+ 	/* can't call min_mtu, because the needed variables
+-- 
+2.47.1
+