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mac80211: mesh: move path tables into if_mesh

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The mesh path and mesh gate hashtables are global, containing
all of the mpaths for every mesh interface, but the paths are
all tied logically to a single interface.  The common case is
just a single mesh interface, so optimize for that by moving
the global hashtable into the per-interface struct.

Doing so allows us to drop sdata pointer comparisons inside
the lookups and also saves a few bytes of BSS and data.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Bob Copeland
2016-02-28 20:03:56 -05:00
committed by Johannes Berg
parent 12880d1694
commit 2bdaf386f9
6 changed files with 104 additions and 115 deletions
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12
net/mac80211/ieee80211_i.h
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@@ -696,6 +696,18 @@ 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 */
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