From: Michal Kazior <michal.kazior@tieto.com>
To: linux-wireless@vger.kernel.org
Cc: johannes@sipsolutions.net, Michal Kazior <michal.kazior@tieto.com>
Subject: [PATCH v2 4/7] mac80211: use chanctx reservation for STA CSA
Date: Fri, 21 Mar 2014 14:52:18 +0100 [thread overview]
Message-ID: <1395409941-26303-5-git-send-email-michal.kazior@tieto.com> (raw)
In-Reply-To: <1395409941-26303-1-git-send-email-michal.kazior@tieto.com>
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).
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
---
net/mac80211/chan.c | 4 +++
net/mac80211/mlme.c | 90 ++++++++++++++++++++++++++++++++---------------------
2 files changed, 59 insertions(+), 35 deletions(-)
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index c171837..faf2a05 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -964,6 +964,10 @@ 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_STATION:
+ ieee80211_queue_work(&sdata->local->hw,
+ &sdata->u.mgd.chswitch_work);
+ break;
default:
break;
}
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 5079454..a5b23a1 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -917,54 +917,66 @@ static void ieee80211_chswitch_work(struct work_struct *work)
container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
- u32 changed = 0;
int ret;
if (!ieee80211_sdata_running(sdata))
return;
sdata_lock(sdata);
+ mutex_lock(&local->mtx);
+ mutex_lock(&local->chanctx_mtx);
+
if (!ifmgd->associated)
+ goto cleanup;
+
+ if (!sdata->vif.csa_active)
+ goto cleanup;
+
+ /* using reservation isn't immediate as it may be deferred until later
+ * with multi-vif. once reservation is complete it will re-schedule the
+ * work with no reserved_chanctx so verify chandef to check if it
+ * completed successfully */
+
+ if (sdata->reserved_chanctx) {
+ ret = ieee80211_vif_use_reserved_context(sdata);
+ if (ret) {
+ sdata_info(sdata,
+ "failed to use reserved channel context, disconnecting (err=%d)\n",
+ ret);
+ ieee80211_queue_work(&sdata->local->hw,
+ &ifmgd->csa_connection_drop_work);
+ goto cleanup;
+ }
+
goto out;
+ }
- mutex_lock(&local->mtx);
- ret = ieee80211_vif_change_channel(sdata, &changed);
- mutex_unlock(&local->mtx);
- if (ret) {
+ if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
+ &sdata->csa_chandef)) {
sdata_info(sdata,
- "vif channel switch failed, disconnecting\n");
+ "failed to finalize channel switch, disconnecting\n");
ieee80211_queue_work(&sdata->local->hw,
&ifmgd->csa_connection_drop_work);
- goto out;
- }
-
- if (!local->use_chanctx) {
- local->_oper_chandef = sdata->csa_chandef;
- /* Call "hw_config" only if doing sw channel switch.
- * Otherwise update the channel directly
- */
- if (!local->ops->channel_switch)
- ieee80211_hw_config(local, 0);
- else
- local->hw.conf.chandef = local->_oper_chandef;
+ goto cleanup;
}
/* XXX: shouldn't really modify cfg80211-owned data! */
ifmgd->associated->channel = sdata->csa_chandef.chan;
- ieee80211_bss_info_change_notify(sdata, changed);
-
- out:
- mutex_lock(&local->mtx);
+cleanup:
sdata->vif.csa_active = false;
+
/* XXX: wait for a beacon first? */
if (!ieee80211_csa_needs_block_tx(local))
ieee80211_wake_queues_by_reason(&local->hw,
IEEE80211_MAX_QUEUE_MAP,
IEEE80211_QUEUE_STOP_REASON_CSA);
- mutex_unlock(&local->mtx);
ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
+
+out:
+ mutex_unlock(&local->chanctx_mtx);
+ mutex_unlock(&local->mtx);
sdata_unlock(sdata);
}
@@ -1001,6 +1013,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct cfg80211_bss *cbss = ifmgd->associated;
+ struct ieee80211_chanctx_conf *conf;
struct ieee80211_chanctx *chanctx;
enum ieee80211_band current_band;
struct ieee80211_csa_ie csa_ie;
@@ -1045,6 +1058,19 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
mutex_lock(&local->chanctx_mtx);
+ conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
+ lockdep_is_held(&local->chanctx_mtx));
+ if (!conf) {
+ sdata_info(sdata,
+ "no channel context assigned to vif?, disconnecting\n");
+ ieee80211_queue_work(&local->hw,
+ &ifmgd->csa_connection_drop_work);
+ mutex_unlock(&local->chanctx_mtx);
+ return;
+ }
+
+ chanctx = container_of(conf, struct ieee80211_chanctx, conf);
+
if (local->use_chanctx) {
u32 num_chanctx = 0;
list_for_each_entry(chanctx, &local->chanctx_list, list)
@@ -1061,17 +1087,12 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
}
}
- if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) {
- ieee80211_queue_work(&local->hw,
- &ifmgd->csa_connection_drop_work);
- mutex_unlock(&local->chanctx_mtx);
- return;
- }
- chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf),
- struct ieee80211_chanctx, conf);
- if (ieee80211_chanctx_refcount(local, chanctx) > 1) {
+ res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
+ chanctx->mode, false);
+ if (res) {
sdata_info(sdata,
- "channel switch with multiple interfaces on the same channel, disconnecting\n");
+ "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
+ res);
ieee80211_queue_work(&local->hw,
&ifmgd->csa_connection_drop_work);
mutex_unlock(&local->chanctx_mtx);
@@ -1079,10 +1100,9 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
}
mutex_unlock(&local->chanctx_mtx);
- sdata->csa_chandef = csa_ie.chandef;
-
mutex_lock(&local->mtx);
sdata->vif.csa_active = true;
+ sdata->csa_chandef = csa_ie.chandef;
sdata->csa_block_tx = csa_ie.mode;
if (sdata->csa_block_tx)
--
1.8.5.3
next prev parent reply other threads:[~2014-03-21 13:58 UTC|newest]
Thread overview: 199+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-18 13:53 [RFC 00/21] cfg80211/mac80211: multi-vif csa Michal Kazior
2014-03-18 13:53 ` [RFC 01/21] mac80211: add support for radar detection for reservations Michal Kazior
2014-03-18 13:53 ` [RFC 02/21] cfg80211: allow drivers to iterate over matching combinations Michal Kazior
2014-03-18 13:53 ` [RFC 03/21] mac80211: add max channel calculation utility function Michal Kazior
2014-03-18 16:17 ` Eliad Peller
2014-03-19 8:32 ` Michal Kazior
2014-03-19 8:43 ` Eliad Peller
2014-03-19 8:54 ` Michal Kazior
2014-03-19 10:18 ` Eliad Peller
2014-03-18 13:53 ` [RFC 04/21] mac80211: prevent chanctx overcommit Michal Kazior
2014-03-18 16:25 ` Eliad Peller
2014-03-18 13:53 ` [RFC 05/21] mac80211: track assigned vifs in chanctx Michal Kazior
2014-03-18 13:53 ` [RFC 06/21] mac80211: track reserved " Michal Kazior
2014-03-18 13:53 ` [RFC 07/21] mac80211: improve find_chanctx() for reservations Michal Kazior
2014-03-18 16:42 ` Eliad Peller
2014-03-19 8:34 ` Michal Kazior
2014-03-19 8:47 ` Eliad Peller
2014-03-19 9:00 ` Michal Kazior
2014-03-19 10:53 ` Eliad Peller
2014-03-18 13:53 ` [RFC 08/21] mac80211: improve chanctx reservation lookup Michal Kazior
2014-03-18 16:57 ` Eliad Peller
2014-03-19 8:45 ` Michal Kazior
2014-03-18 13:53 ` [RFC 09/21] mac80211: split ieee80211_new_chanctx() Michal Kazior
2014-03-18 13:53 ` [RFC 10/21] mac80211: split ieee80211_free_chanctx() Michal Kazior
2014-03-18 13:53 ` [RFC 11/21] mac80211: fix racy usage of chanctx->refcount Michal Kazior
2014-03-18 13:53 ` [RFC 12/21] mac80211: compute chanctx refcount on-the-fly Michal Kazior
2014-03-18 13:53 ` [RFC 13/21] mac80211: implement multi-vif in-place reservations Michal Kazior
2014-03-19 18:35 ` Eliad Peller
2014-03-20 7:25 ` Michal Kazior
2014-03-18 13:53 ` [RFC 14/21] mac80211: fix CSA tx queue locking Michal Kazior
2014-03-18 13:53 ` [RFC 15/21] mac80211: split CSA finalize function Michal Kazior
2014-03-18 13:53 ` [RFC 16/21] mac80211: make check_combinations() aware of chanctx reservation Michal Kazior
2014-03-18 13:53 ` [RFC 17/21] mac80211: use chanctx reservation for AP CSA Michal Kazior
2014-03-18 13:53 ` [RFC 18/21] mac80211: use chanctx reservation for STA CSA Michal Kazior
2014-03-18 13:53 ` [RFC 19/21] mac80211: ignore cqm during csa Michal Kazior
2014-03-18 13:53 ` [RFC 20/21] mac80211: remove old unused channel switching code Michal Kazior
2014-03-18 13:53 ` [RFC 21/21] cfg80211: remove channel_switch combination check Michal Kazior
2014-03-18 15:52 ` [RFC 00/21] cfg80211/mac80211: multi-vif csa Eliad Peller
2014-03-19 9:34 ` Luca Coelho
2014-03-21 13:47 ` [PATCH v2 00/13] cfg80211/mac80211: implement multi-vif chanctx reservations Michal Kazior
2014-03-21 13:47 ` [PATCH v2 01/13] cfg80211: allow drivers to iterate over matching combinations Michal Kazior
2014-03-28 13:05 ` Johannes Berg
2014-03-28 13:21 ` Michal Kazior
2014-03-28 13:22 ` Johannes Berg
2014-03-28 13:42 ` Michal Kazior
2014-03-28 13:49 ` Johannes Berg
2014-03-21 13:47 ` [PATCH v2 02/13] mac80211: add max channel calculation utility function Michal Kazior
2014-03-21 13:47 ` [PATCH v2 03/13] mac80211: prevent chanctx overcommit Michal Kazior
2014-03-25 7:59 ` Luca Coelho
2014-03-25 8:13 ` Luca Coelho
2014-03-25 8:37 ` Michal Kazior
2014-03-25 9:45 ` Luca Coelho
2014-03-21 13:47 ` [PATCH v2 04/13] mac80211: add support for radar detection for reservations Michal Kazior
2014-03-21 13:47 ` [PATCH v2 05/13] mac80211: track assigned vifs in chanctx Michal Kazior
2014-03-28 13:06 ` Johannes Berg
2014-03-21 13:47 ` [PATCH v2 06/13] mac80211: track reserved " Michal Kazior
2014-03-28 13:07 ` Johannes Berg
2014-03-21 13:47 ` [PATCH v2 07/13] mac80211: improve find_chanctx() for reservations Michal Kazior
2014-03-28 13:08 ` Johannes Berg
2014-03-28 13:32 ` Michal Kazior
2014-03-21 13:47 ` [PATCH v2 08/13] mac80211: improve chanctx reservation lookup Michal Kazior
2014-03-21 13:47 ` [PATCH v2 09/13] mac80211: split ieee80211_new_chanctx() Michal Kazior
2014-03-21 13:47 ` [PATCH v2 10/13] mac80211: split ieee80211_free_chanctx() Michal Kazior
2014-03-21 13:47 ` [PATCH v2 11/13] mac80211: fix racy usage of chanctx->refcount Michal Kazior
2014-03-21 13:47 ` [PATCH v2 12/13] mac80211: compute chanctx refcount on-the-fly Michal Kazior
2014-03-28 13:11 ` Johannes Berg
2014-03-28 13:22 ` Michal Kazior
2014-03-28 13:25 ` Johannes Berg
2014-03-21 13:47 ` [PATCH v2 13/13] mac80211: implement multi-vif in-place reservations Michal Kazior
2014-03-31 10:39 ` [PATCH v3 00/13] cfg80211/mac80211: implement multi-vif chanctx reservations Michal Kazior
2014-03-31 10:39 ` [PATCH v3 01/13] cfg80211: allow drivers to iterate over matching combinations Michal Kazior
2014-03-31 10:39 ` [PATCH v3 02/13] mac80211: add max channel calculation utility function Michal Kazior
2014-04-08 13:23 ` Johannes Berg
2014-03-31 10:39 ` [PATCH v3 03/13] mac80211: prevent chanctx overcommit Michal Kazior
2014-03-31 10:39 ` [PATCH v3 04/13] mac80211: add support for radar detection for reservations Michal Kazior
2014-04-08 13:25 ` Johannes Berg
2014-04-09 7:05 ` Michal Kazior
2014-03-31 10:39 ` [PATCH v3 05/13] mac80211: track assigned vifs in chanctx Michal Kazior
2014-03-31 10:39 ` [PATCH v3 06/13] mac80211: track reserved " Michal Kazior
2014-03-31 10:39 ` [PATCH v3 07/13] mac80211: improve find_chanctx() for reservations Michal Kazior
2014-03-31 10:39 ` [PATCH v3 08/13] mac80211: improve chanctx reservation lookup Michal Kazior
2014-03-31 10:39 ` [PATCH v3 09/13] mac80211: split ieee80211_new_chanctx() Michal Kazior
2014-03-31 10:39 ` [PATCH v3 10/13] mac80211: split ieee80211_free_chanctx() Michal Kazior
2014-03-31 10:39 ` [PATCH v3 11/13] mac80211: fix racy usage of chanctx->refcount Michal Kazior
2014-03-31 10:39 ` [PATCH v3 12/13] mac80211: compute chanctx refcount on-the-fly Michal Kazior
2014-03-31 10:39 ` [PATCH v3 13/13] mac80211: implement multi-vif in-place reservations Michal Kazior
2014-03-31 16:15 ` Eliad Peller
2014-04-01 5:10 ` Michal Kazior
2014-04-01 7:46 ` Eliad Peller
2014-04-01 7:54 ` Michal Kazior
2014-04-01 8:10 ` Eliad Peller
2014-04-01 8:26 ` Michal Kazior
2014-04-08 13:30 ` [PATCH v3 00/13] cfg80211/mac80211: implement multi-vif chanctx reservations Johannes Berg
2014-04-08 14:00 ` Luca Coelho
2014-04-09 7:07 ` Michal Kazior
2014-04-09 13:29 ` [PATCH v4 " Michal Kazior
2014-04-09 13:29 ` [PATCH v4 01/13] cfg80211: allow drivers to iterate over matching combinations Michal Kazior
2014-04-09 13:29 ` [PATCH v4 02/13] mac80211: add max channel calculation utility function Michal Kazior
2014-04-09 13:29 ` [PATCH v4 03/13] mac80211: prevent chanctx overcommit Michal Kazior
2014-04-09 13:29 ` [PATCH v4 04/13] mac80211: add support for radar detection for reservations Michal Kazior
2014-04-09 13:29 ` [PATCH v4 05/13] mac80211: track assigned vifs in chanctx Michal Kazior
2014-04-09 13:29 ` [PATCH v4 06/13] mac80211: track reserved " Michal Kazior
2014-04-09 13:29 ` [PATCH v4 07/13] mac80211: improve find_chanctx() for reservations Michal Kazior
2014-04-09 13:29 ` [PATCH v4 08/13] mac80211: improve chanctx reservation lookup Michal Kazior
2014-04-09 13:29 ` [PATCH v4 09/13] mac80211: split ieee80211_new_chanctx() Michal Kazior
2014-04-09 13:29 ` [PATCH v4 10/13] mac80211: split ieee80211_free_chanctx() Michal Kazior
2014-04-09 13:29 ` [PATCH v4 11/13] mac80211: fix racy usage of chanctx->refcount Michal Kazior
2014-04-09 13:29 ` [PATCH v4 12/13] mac80211: compute chanctx refcount on-the-fly Michal Kazior
2014-04-09 13:29 ` [PATCH v4 13/13] mac80211: implement multi-vif in-place reservations Michal Kazior
2014-04-28 16:32 ` [v4 " Zhao, Gang
2014-04-29 6:10 ` Michal Kazior
2014-04-29 19:44 ` Johannes Berg
2014-04-30 9:21 ` [PATCH v5] " Michal Kazior
2014-05-06 10:41 ` Johannes Berg
2014-05-06 12:47 ` Michal Kazior
2014-05-06 14:05 ` Johannes Berg
2014-05-07 6:05 ` Michal Kazior
2014-05-07 8:07 ` Johannes Berg
2014-05-07 8:51 ` Michal Kazior
2014-05-07 9:41 ` Luca Coelho
2014-05-07 9:40 ` Luca Coelho
2014-05-07 10:02 ` Michal Kazior
2014-05-07 10:16 ` Luca Coelho
2014-05-07 10:38 ` Michal Kazior
2014-05-07 11:09 ` Johannes Berg
2014-05-07 11:19 ` Michal Kazior
2014-05-07 11:54 ` Johannes Berg
2014-05-07 12:08 ` Luca Coelho
2014-05-07 12:13 ` Johannes Berg
2014-05-07 12:20 ` Luca Coelho
2014-05-07 12:38 ` Johannes Berg
2014-05-07 12:44 ` Michal Kazior
2014-05-07 12:53 ` Johannes Berg
2014-05-07 13:03 ` Michal Kazior
2014-05-08 10:06 ` Johannes Berg
2014-05-08 10:41 ` Michal Kazior
2014-05-13 13:42 ` Johannes Berg
2014-05-13 13:56 ` Michal Kazior
2014-05-13 15:53 ` Johannes Berg
2014-05-14 5:14 ` Michal Kazior
2014-05-14 8:25 ` Johannes Berg
2014-05-14 8:51 ` Michal Kazior
2014-05-08 10:08 ` Johannes Berg
2014-05-07 12:53 ` Luca Coelho
2014-05-07 13:06 ` Johannes Berg
2014-05-07 13:10 ` Luca Coelho
2014-05-08 10:03 ` Johannes Berg
2014-05-07 12:27 ` Michal Kazior
2014-05-07 12:36 ` Johannes Berg
2014-05-07 12:20 ` Michal Kazior
2014-05-07 12:34 ` Johannes Berg
2014-05-07 11:48 ` Luca Coelho
2014-05-07 9:27 ` Luca Coelho
2014-05-07 11:09 ` Johannes Berg
2014-05-07 11:24 ` Luca Coelho
2014-04-25 15:20 ` [PATCH v4 00/13] cfg80211/mac80211: implement multi-vif chanctx reservations Johannes Berg
2014-04-28 6:16 ` Michal Kazior
2014-03-21 13:52 ` [PATCH v2 0/7] cfg80211/mac80211: implement multi-vif csa Michal Kazior
2014-03-21 13:52 ` [PATCH v2 1/7] cfg80211: fix radar_detect combination checking Michal Kazior
2014-03-28 12:59 ` Johannes Berg
2014-03-21 13:52 ` [PATCH v2 2/7] mac80211: make check_combinations() aware of chanctx reservation Michal Kazior
2014-03-28 13:00 ` Johannes Berg
2014-03-21 13:52 ` [PATCH v2 3/7] mac80211: use chanctx reservation for AP CSA Michal Kazior
2014-03-28 13:01 ` Johannes Berg
2014-03-21 13:52 ` Michal Kazior [this message]
2014-03-21 13:52 ` [PATCH v2 5/7] mac80211: ignore cqm during csa Michal Kazior
2014-03-21 13:52 ` [PATCH v2 6/7] mac80211: remove old unused channel switching code Michal Kazior
2014-03-28 13:03 ` Johannes Berg
2014-03-21 13:52 ` [PATCH v2 7/7] cfg80211: remove channel_switch combination check Michal Kazior
2014-03-31 12:04 ` [PATCH v3 0/5] cfg80211/mac80211: implement multi-vif csa Michal Kazior
2014-03-31 12:04 ` [PATCH v3 1/5] mac80211: make check_combinations() aware of chanctx reservation Michal Kazior
2014-03-31 12:04 ` [PATCH v3 2/5] mac80211: use chanctx reservation for AP CSA Michal Kazior
2014-03-31 13:12 ` Michal Kazior
2014-03-31 12:04 ` [PATCH v3 3/5] mac80211: use chanctx reservation for STA CSA Michal Kazior
2014-03-31 12:04 ` [PATCH v3 4/5] mac80211: ignore cqm during csa Michal Kazior
2014-03-31 12:04 ` [PATCH v3 5/5] cfg80211: remove channel_switch combination check Michal Kazior
2014-04-09 13:45 ` [PATCH v4 0/5] cfg80211/mac80211: implement multi-vif csa Michal Kazior
2014-04-09 13:45 ` [PATCH v4 1/5] mac80211: make check_combinations() aware of chanctx reservation Michal Kazior
2014-04-09 13:45 ` [PATCH v4 2/5] mac80211: use chanctx reservation for AP CSA Michal Kazior
2014-05-06 14:42 ` Johannes Berg
2014-05-07 7:25 ` Michal Kazior
2014-05-07 8:05 ` Johannes Berg
2014-05-07 9:05 ` Michal Kazior
2014-05-07 9:06 ` Michal Kazior
2014-05-07 9:07 ` Johannes Berg
2014-05-07 9:41 ` Michal Kazior
2014-05-07 11:17 ` Johannes Berg
2014-05-07 11:43 ` Michal Kazior
2014-05-07 11:50 ` Johannes Berg
2014-05-07 12:12 ` Michal Kazior
2014-04-09 13:45 ` [PATCH v4 3/5] mac80211: use chanctx reservation for STA CSA Michal Kazior
2014-05-06 14:43 ` Johannes Berg
2014-05-07 7:35 ` Michal Kazior
2014-05-07 8:03 ` Johannes Berg
2014-04-09 13:45 ` [PATCH v4 4/5] mac80211: ignore cqm during csa Michal Kazior
2014-05-06 14:45 ` Johannes Berg
2014-04-09 13:45 ` [PATCH v4 5/5] cfg80211: remove channel_switch combination check Michal Kazior
2014-05-06 14:45 ` Johannes Berg
2014-05-07 7:40 ` Michal Kazior
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