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Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r--net/mac80211/mlme.c134
1 files changed, 84 insertions, 50 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 3345401be1b3..931330bbe00c 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -940,51 +940,70 @@ 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 out;
- mutex_lock(&local->mtx);
- ret = ieee80211_vif_change_channel(sdata, &changed);
- mutex_unlock(&local->mtx);
- if (ret) {
+ if (!sdata->vif.csa_active)
+ goto out;
+
+ /*
+ * 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) {
+ /*
+ * with multi-vif csa driver may call ieee80211_csa_finish()
+ * many times while waiting for other interfaces to use their
+ * reservations
+ */
+ if (sdata->reserved_ready)
+ goto out;
+
+ 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 out;
+ }
+
+ goto out;
+ }
+
+ 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;
- }
-
/* XXX: shouldn't really modify cfg80211-owned data! */
ifmgd->associated->channel = sdata->csa_chandef.chan;
- ieee80211_bss_info_change_notify(sdata, changed);
-
- mutex_lock(&local->mtx);
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);
+ if (sdata->csa_block_tx) {
+ ieee80211_wake_vif_queues(local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+ sdata->csa_block_tx = false;
+ }
ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
@@ -992,6 +1011,8 @@ static void ieee80211_chswitch_work(struct work_struct *work)
ieee80211_sta_reset_conn_monitor(sdata);
out:
+ mutex_unlock(&local->chanctx_mtx);
+ mutex_unlock(&local->mtx);
sdata_unlock(sdata);
}
@@ -1028,6 +1049,7 @@ 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;
@@ -1071,7 +1093,22 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
+ mutex_lock(&local->mtx);
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);
+ mutex_unlock(&local->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)
@@ -1084,38 +1121,32 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
ieee80211_queue_work(&local->hw,
&ifmgd->csa_connection_drop_work);
mutex_unlock(&local->chanctx_mtx);
+ mutex_unlock(&local->mtx);
return;
}
}
- 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);
+ mutex_unlock(&local->mtx);
return;
}
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)
- ieee80211_stop_queues_by_reason(&local->hw,
- IEEE80211_MAX_QUEUE_MAP,
- IEEE80211_QUEUE_STOP_REASON_CSA);
+ ieee80211_stop_vif_queues(local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
mutex_unlock(&local->mtx);
if (local->ops->channel_switch) {
@@ -1385,7 +1416,8 @@ void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
ieee80211_wake_queues_by_reason(&local->hw,
IEEE80211_MAX_QUEUE_MAP,
- IEEE80211_QUEUE_STOP_REASON_PS);
+ IEEE80211_QUEUE_STOP_REASON_PS,
+ false);
}
void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
@@ -1830,10 +1862,11 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
ieee80211_vif_release_channel(sdata);
sdata->vif.csa_active = false;
- if (!ieee80211_csa_needs_block_tx(local))
- ieee80211_wake_queues_by_reason(&local->hw,
- IEEE80211_MAX_QUEUE_MAP,
- IEEE80211_QUEUE_STOP_REASON_CSA);
+ if (sdata->csa_block_tx) {
+ ieee80211_wake_vif_queues(local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+ sdata->csa_block_tx = false;
+ }
mutex_unlock(&local->mtx);
sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
@@ -2079,10 +2112,11 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
mutex_lock(&local->mtx);
sdata->vif.csa_active = false;
- if (!ieee80211_csa_needs_block_tx(local))
- ieee80211_wake_queues_by_reason(&local->hw,
- IEEE80211_MAX_QUEUE_MAP,
- IEEE80211_QUEUE_STOP_REASON_CSA);
+ if (sdata->csa_block_tx) {
+ ieee80211_wake_vif_queues(local, sdata,
+ IEEE80211_QUEUE_STOP_REASON_CSA);
+ sdata->csa_block_tx = false;
+ }
mutex_unlock(&local->mtx);
cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.