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authorMichal Kazior <michal.kazior@tieto.com>2014-06-25 12:35:09 +0200
committerJohannes Berg <johannes.berg@intel.com>2014-06-25 18:06:20 +0200
commit4c3ebc56d7561526524ec62c61aa3e2040b71f6e (patch)
tree9fe45d875f637b6ba0a93829e6ffa492cba2a35d /net/mac80211/chan.c
parent03078de4f928ffcbe629a914dea8bdf66a9d6a48 (diff)
downloadlinux-sh-4c3ebc56d7561526524ec62c61aa3e2040b71f6e.tar.gz
mac80211: use chanctx reservation for STA CSA
Channel switch finalization is now 2-step. First step is when driver calls chswitch_done(), the other is when reservation is actually finalized (which be defered for in-place reservation). It is now safe to call ieee80211_chswitch_done() more than once. Also remove the ieee80211_vif_change_channel() because it is no longer used. 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.c69
1 files changed, 4 insertions, 65 deletions
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index ea4db2f0db87..c3fd4d275bf4 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -819,70 +819,6 @@ int ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
return ret;
}
-static int __ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_chanctx *ctx,
- u32 *changed)
-{
- struct ieee80211_local *local = sdata->local;
- const struct cfg80211_chan_def *chandef = &sdata->csa_chandef;
- u32 chanctx_changed = 0;
-
- if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
- IEEE80211_CHAN_DISABLED))
- return -EINVAL;
-
- if (ieee80211_chanctx_refcount(local, ctx) != 1)
- return -EINVAL;
-
- if (sdata->vif.bss_conf.chandef.width != chandef->width) {
- chanctx_changed = IEEE80211_CHANCTX_CHANGE_WIDTH;
- *changed |= BSS_CHANGED_BANDWIDTH;
- }
-
- sdata->vif.bss_conf.chandef = *chandef;
- ctx->conf.def = *chandef;
-
- chanctx_changed |= IEEE80211_CHANCTX_CHANGE_CHANNEL;
- drv_change_chanctx(local, ctx, chanctx_changed);
-
- ieee80211_recalc_chanctx_chantype(local, ctx);
- ieee80211_recalc_smps_chanctx(local, ctx);
- ieee80211_recalc_radar_chanctx(local, ctx);
- ieee80211_recalc_chanctx_min_def(local, ctx);
-
- return 0;
-}
-
-int ieee80211_vif_change_channel(struct ieee80211_sub_if_data *sdata,
- u32 *changed)
-{
- struct ieee80211_local *local = sdata->local;
- struct ieee80211_chanctx_conf *conf;
- struct ieee80211_chanctx *ctx;
- int ret;
-
- lockdep_assert_held(&local->mtx);
-
- /* should never be called if not performing a channel switch. */
- if (WARN_ON(!sdata->vif.csa_active))
- return -EINVAL;
-
- mutex_lock(&local->chanctx_mtx);
- conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
- lockdep_is_held(&local->chanctx_mtx));
- if (!conf) {
- ret = -EINVAL;
- goto out;
- }
-
- ctx = container_of(conf, struct ieee80211_chanctx, conf);
-
- ret = __ieee80211_vif_change_channel(sdata, ctx, changed);
- out:
- mutex_unlock(&local->chanctx_mtx);
- return ret;
-}
-
static void
__ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
bool clear)
@@ -1066,8 +1002,11 @@ ieee80211_vif_chanctx_reservation_complete(struct ieee80211_sub_if_data *sdata)
ieee80211_queue_work(&sdata->local->hw,
&sdata->csa_finalize_work);
break;
- case NL80211_IFTYPE_UNSPECIFIED:
case NL80211_IFTYPE_STATION:
+ ieee80211_queue_work(&sdata->local->hw,
+ &sdata->u.mgd.chswitch_work);
+ break;
+ case NL80211_IFTYPE_UNSPECIFIED:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_WDS:
case NL80211_IFTYPE_MONITOR: