mac80211: backport from trunk r48782 + required kernel patches and mt76, mwlwifi

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/chaos_calmer@48822 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 54 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/327-mac80211-Remove-MPP-table-entries-with-MPath.patch b/package/kernel/mac80211/patches/327-mac80211-Remove-MPP-table-entries-with-MPath.patch
new file mode 100644
index 0000000000..f7f9df946a
--- /dev/null
+++ b/package/kernel/mac80211/patches/327-mac80211-Remove-MPP-table-entries-with-MPath.patch
@@ -0,0 +1,54 @@
+From: Henning Rogge <hrogge@gmail.com>
+Date: Wed, 3 Feb 2016 13:58:36 +0100
+Subject: [PATCH] mac80211: Remove MPP table entries with MPath
+
+Make the mesh_path_del() function remove all mpp table entries
+that are proxied by the removed mesh path.
+
+Acked-by: Bob Copeland <me@bobcopeland.com>
+Signed-off-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+---
+
+--- a/net/mac80211/mesh_pathtbl.c
++++ b/net/mac80211/mesh_pathtbl.c
+@@ -835,6 +835,29 @@ void mesh_path_flush_by_nexthop(struct s
+ 	rcu_read_unlock();
+ }
+ 
++static void mpp_flush_by_proxy(struct ieee80211_sub_if_data *sdata,
++			       const u8 *proxy)
++{
++	struct mesh_table *tbl;
++	struct mesh_path *mpp;
++	struct mpath_node *node;
++	int i;
++
++	rcu_read_lock();
++	read_lock_bh(&pathtbl_resize_lock);
++	tbl = resize_dereference_mpp_paths();
++	for_each_mesh_entry(tbl, node, i) {
++		mpp = node->mpath;
++		if (ether_addr_equal(mpp->mpp, proxy)) {
++			spin_lock(&tbl->hashwlock[i]);
++			__mesh_path_del(tbl, node);
++			spin_unlock(&tbl->hashwlock[i]);
++		}
++	}
++	read_unlock_bh(&pathtbl_resize_lock);
++	rcu_read_unlock();
++}
++
+ static void table_flush_by_iface(struct mesh_table *tbl,
+ 				 struct ieee80211_sub_if_data *sdata)
+ {
+@@ -892,6 +915,9 @@ int mesh_path_del(struct ieee80211_sub_i
+ 	int hash_idx;
+ 	int err = 0;
+ 
++	/* flush relevant mpp entries first */
++	mpp_flush_by_proxy(sdata, addr);
++
+ 	read_lock_bh(&pathtbl_resize_lock);
+ 	tbl = resize_dereference_mesh_paths();
+ 	hash_idx = mesh_table_hash(addr, sdata, tbl);