batman-adv: upgrade package to latest release 2016.4

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

4 files changed, 98 insertions, 31 deletions

diff --git a/batman-adv/Config.in b/batman-adv/Config.in
index 48092e7..8c75f31 100644
--- a/batman-adv/Config.in
+++ b/batman-adv/Config.in
@@ -14,6 +14,11 @@ config KMOD_BATMAN_ADV_DAT
 	depends on PACKAGE_kmod-batman-adv
 	default y
 
+config KMOD_BATMAN_ADV_DEBUGFS
+	bool "enable debugfs support"
+	depends on PACKAGE_kmod-batman-adv
+	default y
+
 config KMOD_BATMAN_ADV_MCAST
 	bool "enable multicast transmission optimization"
 	depends on PACKAGE_kmod-batman-adv
diff --git a/batman-adv/Makefile b/batman-adv/Makefile
index e12c166..23b2f74 100644
--- a/batman-adv/Makefile
+++ b/batman-adv/Makefile
@@ -10,9 +10,9 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=batman-adv
 
-PKG_VERSION:=2016.3
+PKG_VERSION:=2016.4
 PKG_RELEASE:=0
-PKG_MD5SUM:=63f530a62c3d48ed0c7e42f47dfa4d4d
+PKG_MD5SUM:=1ed28d02ad86050d1518023e354737b6
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://downloads.open-mesh.org/batman/releases/batman-adv-$(PKG_VERSION)
@@ -50,6 +50,7 @@ endef
 PKG_EXTRA_KCONFIG:= \
 	CONFIG_BATMAN_ADV=m \
 	CONFIG_BATMAN_ADV_DEBUG=$(if $(CONFIG_KMOD_BATMAN_ADV_DEBUG_LOG),y,n) \
+	CONFIG_BATMAN_ADV_DEBUGFS=$(if $(CONFIG_KMOD_BATMAN_ADV_DEBUGFS),y,n) \
 	CONFIG_BATMAN_ADV_BLA=$(if $(CONFIG_KMOD_BATMAN_ADV_BLA),y,n) \
 	CONFIG_BATMAN_ADV_DAT=$(if $(CONFIG_KMOD_BATMAN_ADV_DAT),y,n) \
 	CONFIG_BATMAN_ADV_MCAST=$(if $(CONFIG_KMOD_BATMAN_ADV_MCAST),y,n) \
diff --git a/batman-adv/files/compat-hacks.h b/batman-adv/files/compat-hacks.h
index a7fc179..32903b5 100644
--- a/batman-adv/files/compat-hacks.h
+++ b/batman-adv/files/compat-hacks.h
@@ -97,3 +97,93 @@ static inline void batadv_netif_trans_update(struct net_device *dev)
 }
 
 #endif /* < KERNEL_VERSION(4, 7, 0) */
+
+
+#include_next <linux/netlink.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0)
+
+#include_next <net/netlink.h>
+
+static inline bool batadv_nla_need_padding_for_64bit(struct sk_buff *skb);
+
+static inline int batadv_nla_align_64bit(struct sk_buff *skb, int padattr)
+{
+	if (batadv_nla_need_padding_for_64bit(skb) &&
+	    !nla_reserve(skb, padattr, 0))
+		return -EMSGSIZE;
+
+	return 0;
+}
+
+static inline struct nlattr *batadv__nla_reserve_64bit(struct sk_buff *skb,
+						       int attrtype,
+						       int attrlen, int padattr)
+{
+	if (batadv_nla_need_padding_for_64bit(skb))
+		batadv_nla_align_64bit(skb, padattr);
+
+	return __nla_reserve(skb, attrtype, attrlen);
+}
+
+static inline void batadv__nla_put_64bit(struct sk_buff *skb, int attrtype,
+					 int attrlen, const void *data,
+					 int padattr)
+{
+	struct nlattr *nla;
+
+	nla = batadv__nla_reserve_64bit(skb, attrtype, attrlen, padattr);
+	memcpy(nla_data(nla), data, attrlen);
+}
+
+static inline bool batadv_nla_need_padding_for_64bit(struct sk_buff *skb)
+{
+#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
+	/* The nlattr header is 4 bytes in size, that's why we test
+	 * if the skb->data _is_ aligned.  A NOP attribute, plus
+	 * nlattr header for next attribute, will make nla_data()
+	 * 8-byte aligned.
+	 */
+	if (IS_ALIGNED((unsigned long)skb_tail_pointer(skb), 8))
+		return true;
+#endif
+	return false;
+}
+
+static inline int batadv_nla_total_size_64bit(int payload)
+{
+	return NLA_ALIGN(nla_attr_size(payload))
+#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
+		+ NLA_ALIGN(nla_attr_size(0))
+#endif
+		;
+}
+
+static inline int batadv_nla_put_64bit(struct sk_buff *skb, int attrtype,
+				       int attrlen, const void *data,
+				       int padattr)
+{
+	size_t len;
+
+	if (batadv_nla_need_padding_for_64bit(skb))
+		len = batadv_nla_total_size_64bit(attrlen);
+	else
+		len = nla_total_size(attrlen);
+	if (unlikely(skb_tailroom(skb) < len))
+		return -EMSGSIZE;
+
+	batadv__nla_put_64bit(skb, attrtype, attrlen, data, padattr);
+	return 0;
+}
+
+#define nla_put_u64_64bit(_skb, _attrtype, _value, _padattr) \
+	batadv_nla_put_u64_64bit(_skb, _attrtype, _value, _padattr)
+static inline int batadv_nla_put_u64_64bit(struct sk_buff *skb, int attrtype,
+					   u64 value, int padattr)
+{
+	return batadv_nla_put_64bit(skb, attrtype, sizeof(u64), &value,
+				    padattr);
+}
+
+#endif /* < KERNEL_VERSION(4, 7, 0) */
+
diff --git a/batman-adv/patches/0001-batman-adv-Modify-neigh_list-only-with-rcu-list-func.patch b/batman-adv/patches/0001-batman-adv-Modify-neigh_list-only-with-rcu-list-func.patch
deleted file mode 100644
index a30d80b..0000000
--- a/batman-adv/patches/0001-batman-adv-Modify-neigh_list-only-with-rcu-list-func.patch
+++ /dev/null
@@ -1,29 +0,0 @@
-From: Sven Eckelmann <sven.eckelmann@open-mesh.com>
-Date: Thu, 29 Sep 2016 17:22:58 +0200
-Subject: [PATCH] batman-adv: Modify neigh_list only with rcu-list functions
-
-The batadv_hard_iface::neigh_list is accessed via rcu based primitives.
-Thus all operations done on it have to fulfill the requirements by RCU. So
-using non-RCU mechanisms like hlist_add_head is not allowed because it
-misses the barriers required to protect concurrent readers when accessing
-the data behind the pointer.
-
-Fixes: fed2826b490c ("batman-adv: add list of unique single hop neighbors per hard-interface")
-Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com>
----
- net/batman-adv/originator.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
-index 3940b5d..3e9667e 100644
---- a/net/batman-adv/originator.c
-+++ b/net/batman-adv/originator.c
-@@ -537,7 +537,7 @@ batadv_hardif_neigh_create(struct batadv_hard_iface *hard_iface,
- 	if (bat_priv->algo_ops->neigh.hardif_init)
- 		bat_priv->algo_ops->neigh.hardif_init(hardif_neigh);
- 
--	hlist_add_head(&hardif_neigh->list, &hard_iface->neigh_list);
-+	hlist_add_head_rcu(&hardif_neigh->list, &hard_iface->neigh_list);
- 
- out:
- 	spin_unlock_bh(&hard_iface->neigh_list_lock);