Implement get_mpp and dump_mpp cfg80211_ops to export the content of the 802.11s mesh proxy path table to userspace.
Signed-off-by: Henning Rogge <henning.rogge@xxxxxxxxxxxxxxxxxx>
---
net/mac80211/cfg.c | 53 +++++++++++++++++++++++++++++++++++++++++++++
net/mac80211/mesh.h | 3 +++
net/mac80211/mesh_pathtbl.c | 31 ++++++++++++++++++++++++++
3 files changed, 87 insertions(+)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 927b4ea..2b85eed 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1511,6 +1511,57 @@ static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
return 0;
}
+static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
+ struct mpath_info *pinfo)
+{
+ memset(pinfo, 0, sizeof(*pinfo));
+ memcpy(mpp, mpath->mpp, ETH_ALEN);
+
+ pinfo->generation = mpp_paths_generation;
+}
+
+static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
+ u8 *dst, u8 *mpp, struct mpath_info *pinfo)
+
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct mesh_path *mpath;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ rcu_read_lock();
+ mpath = mpp_path_lookup(sdata, dst);
+ if (!mpath) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+ memcpy(dst, mpath->dst, ETH_ALEN);
+ mpp_set_pinfo(mpath, mpp, pinfo);
+ rcu_read_unlock();
+ return 0;
+}
+
+static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
+ int idx, u8 *dst, u8 *mpp,
+ struct mpath_info *pinfo)
+{
+ struct ieee80211_sub_if_data *sdata;
+ struct mesh_path *mpath;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ rcu_read_lock();
+ mpath = mpp_path_lookup_by_idx(sdata, idx);
+ if (!mpath) {
+ rcu_read_unlock();
+ return -ENOENT;
+ }
+ memcpy(dst, mpath->dst, ETH_ALEN);
+ mpp_set_pinfo(mpath, mpp, pinfo);
+ rcu_read_unlock();
+ return 0;
+}
+
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
struct net_device *dev,
struct mesh_config *conf)
@@ -3507,6 +3558,8 @@ const struct cfg80211_ops mac80211_config_ops = {
.change_mpath = ieee80211_change_mpath,
.get_mpath = ieee80211_get_mpath,
.dump_mpath = ieee80211_dump_mpath,
+ .get_mpp = ieee80211_get_mpp,
+ .dump_mpp = ieee80211_dump_mpp,
.update_mesh_config = ieee80211_update_mesh_config,
.get_mesh_config = ieee80211_get_mesh_config,
.join_mesh = ieee80211_join_mesh,
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index f39a19f..50c8473 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -270,6 +270,8 @@ int mpp_path_add(struct ieee80211_sub_if_data *sdata,
const u8 *dst, const u8 *mpp);
struct mesh_path *
mesh_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx);
+struct mesh_path *
+mpp_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx);
void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
@@ -317,6 +319,7 @@ void mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata);
bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt);
extern int mesh_paths_generation;
+extern int mpp_paths_generation;
#ifdef CONFIG_MAC80211_MESH
static inline
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index cf032a8..8630963 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -44,6 +44,7 @@ static struct mesh_table __rcu *mesh_paths;
static struct mesh_table __rcu *mpp_paths; /* Store paths for MPP&MAP */
int mesh_paths_generation;
+int mpp_paths_generation;
/* This lock will have the grow table function as writer and add / delete nodes
* as readers. RCU provides sufficient protection only when reading the table
@@ -410,6 +411,33 @@ mesh_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx)
}
/**
+ * mpp_path_lookup_by_idx - look up a path in the proxy path table by its index
+ * @idx: index
+ * @sdata: local subif, or NULL for all entries
+ *
+ * Returns: pointer to the proxy path structure, or NULL if not found.
+ *
+ * Locking: must be called within a read rcu section.
+ */
+struct mesh_path *
+mpp_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx)
+{
+ struct mesh_table *tbl = rcu_dereference(mpp_paths);
+ struct mpath_node *node;
+ int i;
+ int j = 0;
+
+ for_each_mesh_entry(tbl, node, i) {
+ if (sdata && node->mpath->sdata != sdata)
+ continue;
+ if (j++ == idx)
+ return node->mpath;
+ }
+
+ return NULL;
+}
+
+/**
* mesh_path_add_gate - add the given mpath to a mesh gate to our path table
* @mpath: gate path to add to table
*/
@@ -691,6 +719,9 @@ int mpp_path_add(struct ieee80211_sub_if_data *sdata,
spin_unlock(&tbl->hashwlock[hash_idx]);
read_unlock_bh(&pathtbl_resize_lock);
+
+ mpp_paths_generation++;
+
if (grow) {
set_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags);
ieee80211_queue_work(&local->hw, &sdata->work);
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
