+From 1798ad3fb6ba72f8c6f96024b27ad27193648787 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Linus=20L=C3=BCssing?= <linus.luessing@c0d3.blue>
+Date: Fri, 3 Jul 2015 18:29:59 +0200
+Subject: [PATCH 17/17] batman-adv: Fix broken MCAST capability check
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The introduction of set_bit() and clear_bit() calls in batman-adv
+wrongly passed bitmasks and not the bit numbers to these functions.
+This leads to broken capability checks.
+
+Fixing this by making the capability enum a non-bitmasked one and by
+that passing non-masked values to set_bit()/clear_bit().
+
+Fixes: 201a54ba710a ("batman-adv: Make MCAST capability changes atomic")
+Reported-by: Def <def@laposte.net>
+Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
+Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
+---
+ multicast.c | 11 ++++++-----
+ types.h | 2 +-
+ 2 files changed, 7 insertions(+), 6 deletions(-)
+
+diff --git a/multicast.c b/multicast.c
+index b75bcc3..ee8317f 100644
+--- a/multicast.c
++++ b/multicast.c
+@@ -709,14 +709,15 @@ static void batadv_mcast_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
+ mcast_flags = *(uint8_t *)tvlv_value;
+
+ spin_lock_bh(&orig->mcast_handler_lock);
+- orig_initialized = orig->capa_initialized & BATADV_ORIG_CAPA_HAS_MCAST;
++ orig_initialized = test_bit(BATADV_ORIG_CAPA_HAS_MCAST,
++ &orig->capa_initialized);
+
+ /* If mcast support is turned on decrease the disabled mcast node
+ * counter only if we had increased it for this node before. If this
+ * is a completely new orig_node no need to decrease the counter.
+ */
+ if (orig_mcast_enabled &&
+- !(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST)) {
++ !(test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities))) {
+ if (orig_initialized)
+ atomic_dec(&bat_priv->mcast.num_disabled);
+ set_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities);
+@@ -725,7 +726,7 @@ static void batadv_mcast_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv,
+ * node counter.
+ */
+ } else if (!orig_mcast_enabled &&
+- (orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST ||
++ (test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities) ||
+ !orig_initialized)) {
+ atomic_inc(&bat_priv->mcast.num_disabled);
+ clear_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities);
+@@ -774,8 +775,8 @@ void batadv_mcast_purge_orig(struct batadv_orig_node *orig)
+
+ spin_lock_bh(&orig->mcast_handler_lock);
+
+- if (!(orig->capabilities & BATADV_ORIG_CAPA_HAS_MCAST) &&
+- orig->capa_initialized & BATADV_ORIG_CAPA_HAS_MCAST)
++ if (!(test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capabilities)) &&
++ test_bit(BATADV_ORIG_CAPA_HAS_MCAST, &orig->capa_initialized))
+ atomic_dec(&bat_priv->mcast.num_disabled);
+
+ batadv_mcast_want_unsnoop_update(bat_priv, orig, BATADV_NO_FLAGS);
+diff --git a/types.h b/types.h
+index 6f4486c..3baf595 100644
+--- a/types.h
++++ b/types.h
+@@ -302,7 +302,7 @@ enum batadv_orig_capabilities {
+ BATADV_ORIG_CAPA_HAS_DAT,
+ BATADV_ORIG_CAPA_HAS_NC,
+ BATADV_ORIG_CAPA_HAS_TT,
+- BATADV_ORIG_CAPA_HAS_MCAST = BIT(3),
++ BATADV_ORIG_CAPA_HAS_MCAST,
+ };
+
+ /**
+--
+2.1.4
+