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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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10
net/mac80211/mesh.c
View file

@ -25,7 +25,6 @@ bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
void ieee80211s_init(void)
{
mesh_pathtbl_init();
mesh_allocated = 1;
rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry),
0, 0, NULL);
@ -35,7 +34,6 @@ void ieee80211s_stop(void)
{
if (!mesh_allocated)
return;
mesh_pathtbl_unregister();
kmem_cache_destroy(rm_cache);
}
@ -902,6 +900,7 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
/* flush STAs and mpaths on this iface */
sta_info_flush(sdata);
mesh_path_flush_by_iface(sdata);
mesh_pathtbl_unregister(sdata);
/* free all potentially still buffered group-addressed frames */
local->total_ps_buffered -= skb_queue_len(&ifmsh->ps.bc_buf);
@ -1349,10 +1348,10 @@ void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
mesh_path_start_discovery(sdata);
if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
mesh_mpath_table_grow();
mesh_mpath_table_grow(sdata);
if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags))
mesh_mpp_table_grow();
mesh_mpp_table_grow(sdata);
if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags))
ieee80211_mesh_housekeeping(sdata);
@ -1388,6 +1387,9 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
/* Allocate all mesh structures when creating the first mesh interface. */
if (!mesh_allocated)
ieee80211s_init();
mesh_pathtbl_init(sdata);
setup_timer(&ifmsh->mesh_path_timer,
ieee80211_mesh_path_timer,
(unsigned long) sdata);