batman-adv: upgrade package to latest release 2019.0

* support latest kernels (3.16 - 5.0)
* coding style cleanups and refactoring
* allow to enable debug tracing without full batman-adv debugfs support
* enable inconsistency reporting for most netlink dump commands
* bugs squashed:

  - avoid unnecessary kernel warning (panic) during detection of interface loops
  - work around incorrect ethernet header offset in transmit code path

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

batman-adv/Config.in

@@ -90,7 +90,7 @@ config BATMAN_ADV_DEBUGFS
 
 config BATMAN_ADV_DEBUG
 	bool "B.A.T.M.A.N. debugging"
-	depends on BATMAN_ADV_DEBUGFS
+	depends on PACKAGE_kmod-batman-adv
 	help
 	  This is an option for use by developers; most people should
 	  say N here. This enables compilation of support for

batman-adv/Makefile

@@ -9,9 +9,9 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=batman-adv
 
-PKG_VERSION:=2018.4
-PKG_RELEASE:=1
-PKG_HASH:=3500b4bc7d41ce1adef0b0684972a439d48b454ba78282e94df13ba90605484d
+PKG_VERSION:=2019.0
+PKG_RELEASE:=0
+PKG_HASH:=3e97d8a771cdbd7b2df42c52b88e071eaa58b5d28eb4e17a4b13b6698debbdc0
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://downloads.open-mesh.org/batman/releases/batman-adv-$(PKG_VERSION)

batman-adv/src/compat-hacks.h

@@ -348,6 +348,27 @@ typedef unsigned __poll_t;
 
 #endif /* < KERNEL_VERSION(4, 16, 0) */
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 0, 0)
+
+static inline int batadv_access_ok(int type, const void __user *p,
+				   unsigned long size)
+{
+	return access_ok(type, p, size);
+}
+
+#ifdef access_ok
+#undef access_ok
+#endif
+
+#define access_ok_get(_1, _2, _3 , access_ok_name, ...) access_ok_name
+#define access_ok(...) \
+	access_ok_get(__VA_ARGS__, access_ok3, access_ok2)(__VA_ARGS__)
+
+#define access_ok2(addr, size)	batadv_access_ok(VERIFY_WRITE, (addr), (size))
+#define access_ok3(type, addr, size)	batadv_access_ok((type), (addr), (size))
+
+#endif /* < KERNEL_VERSION(5, 0, 0) */
+
 /* <DECLARE_EWMA> */
 
 #include <linux/version.h>