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authorMichal Kazior <michal.kazior@tieto.com>2014-06-25 12:35:08 +0200
committerJohannes Berg <johannes.berg@intel.com>2014-06-25 18:06:20 +0200
commit03078de4f928ffcbe629a914dea8bdf66a9d6a48 (patch)
treea52ef5c76e459885efe13b13492434777959f670 /net/mac80211/chan.c
parent71e6195ed2541d764fb0d7ef39cdb2236817116b (diff)
downloadlinux-sh-03078de4f928ffcbe629a914dea8bdf66a9d6a48.tar.gz
mac80211: use chanctx reservation for AP CSA
Channel switch finalization is now 2-step. First step is when driver calls csa_finish(), the other is when reservation is actually finalized (which can be deferred for in-place reservation). It is now safe to call ieee80211_csa_finish() more than once. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/chan.c')
-rw-r--r--net/mac80211/chan.c35
1 files changed, 33 insertions, 2 deletions
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index 0e4302bb5b34..ea4db2f0db87 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -1056,6 +1056,30 @@ int ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
return 0;
}
+static void
+ieee80211_vif_chanctx_reservation_complete(struct ieee80211_sub_if_data *sdata)
+{
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_ADHOC:
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_MESH_POINT:
+ ieee80211_queue_work(&sdata->local->hw,
+ &sdata->csa_finalize_work);
+ break;
+ case NL80211_IFTYPE_UNSPECIFIED:
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_AP_VLAN:
+ case NL80211_IFTYPE_WDS:
+ case NL80211_IFTYPE_MONITOR:
+ case NL80211_IFTYPE_P2P_CLIENT:
+ case NL80211_IFTYPE_P2P_GO:
+ case NL80211_IFTYPE_P2P_DEVICE:
+ case NUM_NL80211_IFTYPES:
+ WARN_ON(1);
+ break;
+ }
+}
+
static int
ieee80211_vif_use_reserved_reassign(struct ieee80211_sub_if_data *sdata)
{
@@ -1103,7 +1127,7 @@ ieee80211_vif_use_reserved_reassign(struct ieee80211_sub_if_data *sdata)
if (ieee80211_chanctx_refcount(local, new_ctx) == 0)
ieee80211_free_chanctx(local, new_ctx);
- return err;
+ goto out;
}
list_move(&sdata->assigned_chanctx_list, &new_ctx->assigned_vifs);
@@ -1123,6 +1147,8 @@ ieee80211_vif_use_reserved_reassign(struct ieee80211_sub_if_data *sdata)
if (changed)
ieee80211_bss_info_change_notify(sdata, changed);
+out:
+ ieee80211_vif_chanctx_reservation_complete(sdata);
return err;
}
@@ -1167,6 +1193,7 @@ ieee80211_vif_use_reserved_assign(struct ieee80211_sub_if_data *sdata)
}
out:
+ ieee80211_vif_chanctx_reservation_complete(sdata);
return err;
}
@@ -1480,6 +1507,8 @@ ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
list_move(&sdata->assigned_chanctx_list,
&new_ctx->assigned_vifs);
sdata->reserved_chanctx = NULL;
+
+ ieee80211_vif_chanctx_reservation_complete(sdata);
}
/*
@@ -1543,8 +1572,10 @@ err:
continue;
list_for_each_entry_safe(sdata, sdata_tmp, &ctx->reserved_vifs,
- reserved_chanctx_list)
+ reserved_chanctx_list) {
ieee80211_vif_unreserve_chanctx(sdata);
+ ieee80211_vif_chanctx_reservation_complete(sdata);
+ }
}
return err;