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mac80211: mesh: convert path table to rhashtable

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In the time since the mesh path table was implemented as an
RCU-traversable, dynamically growing hash table, a generic RCU
hashtable implementation was added to the kernel.

Switch the mesh path table over to rhashtable to remove some code
and also gain some features like automatic shrinking.

Cc: Thomas Graf <tgraf@suug.ch>
Cc: netdev@vger.kernel.org
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Bob Copeland
2016-03-02 10:09:20 -05:00
committed by Johannes Berg
parent 8f6fd83c6c
commit 60854fd945
4 changed files with 265 additions and 581 deletions
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11
net/mac80211/ieee80211_i.h
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@@ -697,17 +697,10 @@ struct ieee80211_if_mesh {
/* offset from skb->data while building IE */
int meshconf_offset;
struct mesh_table __rcu *mesh_paths;
struct mesh_table __rcu *mpp_paths; /* Store paths for MPP&MAP */
struct mesh_table *mesh_paths;
struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
int mesh_paths_generation;
int mpp_paths_generation;
/* Protects assignment of the mesh_paths/mpp_paths table
* pointer for resize against reading it for add/delete
* of individual paths. Pure readers (lookups) just use
* RCU.
*/
rwlock_t pathtbl_resize_lock;
};
#ifdef CONFIG_MAC80211_MESH