batman-adv: update to version 2023.3

* support latest kernels (4.14 - 6.7)
* coding style cleanups and refactoring
* only warn about too small MTU when soft interfaces wasn't already reduced
* bugs squashed:
  - Hold rtnl lock during MTU update via netlink

Signed-off-by: Sven Eckelmann <sven@narfation.org>

4 files changed, 5 insertions, 39 deletions

diff --git a/batman-adv/Makefile b/batman-adv/Makefile
index 84adf6e..ea48f3a 100644
--- a/batman-adv/Makefile
+++ b/batman-adv/Makefile
@@ -3,12 +3,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=batman-adv
-PKG_VERSION:=2023.2
+PKG_VERSION:=2023.3
 PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://downloads.open-mesh.org/batman/releases/batman-adv-$(PKG_VERSION)
-PKG_HASH:=3907dcd57e2c5bfd9d40713960b9402bf1da4f80c59b5ff037789fbbbbd8fa25
+PKG_HASH:=f7c6c53e59343c162642cb9b44f1016765d4bf513e039002be612b7a6c1ea36c
 PKG_EXTMOD_SUBDIRS:=net/batman-adv
 
 PKG_MAINTAINER:=Simon Wunderlich <sw@simonwunderlich.de>
diff --git a/batman-adv/patches/0001-Revert-batman-adv-Migrate-to-linux-container_of.h.patch b/batman-adv/patches/0001-Revert-batman-adv-Migrate-to-linux-container_of.h.patch
index fbf1ef6..466ce1a 100644
--- a/batman-adv/patches/0001-Revert-batman-adv-Migrate-to-linux-container_of.h.patch
+++ b/batman-adv/patches/0001-Revert-batman-adv-Migrate-to-linux-container_of.h.patch
@@ -117,10 +117,10 @@ This reverts commit 043ae5634bdfd4c4dd8b95a22890752495080bb5.
  #include <linux/gfp.h>
 --- a/net/batman-adv/hard-interface.c
 +++ b/net/batman-adv/hard-interface.c
-@@ -9,12 +9,12 @@
- 
+@@ -10,12 +10,12 @@
  #include <linux/atomic.h>
  #include <linux/byteorder/generic.h>
+ #include <linux/compiler.h>
 -#include <linux/container_of.h>
  #include <linux/errno.h>
  #include <linux/gfp.h>
diff --git a/batman-adv/patches/0002-fix-batadv_is_cfg80211_netdev.patch b/batman-adv/patches/0002-fix-batadv_is_cfg80211_netdev.patch
index 9ac66b8..ae70c85 100644
--- a/batman-adv/patches/0002-fix-batadv_is_cfg80211_netdev.patch
+++ b/batman-adv/patches/0002-fix-batadv_is_cfg80211_netdev.patch
@@ -7,7 +7,7 @@ macro to use when building under backports.
 
 --- a/net/batman-adv/hard-interface.c
 +++ b/net/batman-adv/hard-interface.c
-@@ -307,8 +307,7 @@ static bool batadv_is_cfg80211_netdev(st
+@@ -308,8 +308,7 @@ static bool batadv_is_cfg80211_netdev(st
  {
  	if (!net_device)
  		return false;
diff --git a/batman-adv/patches/0003-batman-adv-Hold-rtnl-lock-during-MTU-update-via-netl.patch b/batman-adv/patches/0003-batman-adv-Hold-rtnl-lock-during-MTU-update-via-netl.patch
deleted file mode 100644
index 4d7a392..0000000
--- a/batman-adv/patches/0003-batman-adv-Hold-rtnl-lock-during-MTU-update-via-netl.patch
+++ /dev/null
@@ -1,34 +0,0 @@
-From: Sven Eckelmann <sven@narfation.org>
-Date: Mon, 21 Aug 2023 21:48:48 +0200
-Subject: batman-adv: Hold rtnl lock during MTU update via netlink
-
-The automatic recalculation of the maximum allowed MTU is usually triggered
-by code sections which are already rtnl lock protected by callers outside
-of batman-adv. But when the fragmentation setting is changed via
-batman-adv's own batadv genl family, then the rtnl lock is not yet taken.
-
-But dev_set_mtu requires that the caller holds the rtnl lock because it
-uses netdevice notifiers. And this code will then fail the check for this
-lock:
-
-  RTNL: assertion failed at net/core/dev.c (1953)
-
-Cc: stable@vger.kernel.org
-Reported-by: syzbot+f8812454d9b3ac00d282@syzkaller.appspotmail.com
-Fixes: 27c4d7c1c7fa ("batman-adv: Trigger events for auto adjusted MTU")
-Reviewed-by: Simon Horman <horms@kernel.org>
-Signed-off-by: Sven Eckelmann <sven@narfation.org>
-
---- a/net/batman-adv/netlink.c
-+++ b/net/batman-adv/netlink.c
-@@ -495,7 +495,10 @@ static int batadv_netlink_set_mesh(struc
- 		attr = info->attrs[BATADV_ATTR_FRAGMENTATION_ENABLED];
- 
- 		atomic_set(&bat_priv->fragmentation, !!nla_get_u8(attr));
-+
-+		rtnl_lock();
- 		batadv_update_min_mtu(bat_priv->soft_iface);
-+		rtnl_unlock();
- 	}
- 
- 	if (info->attrs[BATADV_ATTR_GW_BANDWIDTH_DOWN]) {