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openwrt/package/kernel/mac80211/patches/subsys/336-wifi-cfg80211-move-DFS-related-members-to-links-in-w.patch
Felix Fietkau ec61ccc0d3 mac80211: backport upstream DFS fixes 
Mostly MLO related

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2024-10-05 09:45:41 +02:00

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From: Aditya Kumar Singh <quic_adisi@quicinc.com>
Date: Fri, 6 Sep 2024 12:14:22 +0530
Subject: [PATCH] wifi: cfg80211: move DFS related members to links[] in
wireless_dev
A few members related to DFS handling are currently under per wireless
device data structure. However, in order to support DFS with MLO, there is
a need to have them on a per-link manner.
Hence, as a preliminary step, move members cac_started, cac_start_time
and cac_time_ms to be on a per-link basis.
Since currently, link ID is not known at all places, use default value of
0 for now.
Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://patch.msgid.link/20240906064426.2101315-5-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/drivers/net/wireless/marvell/mwifiex/11h.c
+++ b/drivers/net/wireless/marvell/mwifiex/11h.c
@@ -117,7 +117,7 @@ void mwifiex_dfs_cac_work_queue(struct w
dfs_cac_work);
chandef = priv->dfs_chandef;
- if (priv->wdev.cac_started) {
+ if (priv->wdev.links[0].cac_started) {
mwifiex_dbg(priv->adapter, MSG,
"CAC timer finished; No radar detected\n");
cfg80211_cac_event(priv->netdev, &chandef,
@@ -174,7 +174,7 @@ int mwifiex_stop_radar_detection(struct
*/
void mwifiex_abort_cac(struct mwifiex_private *priv)
{
- if (priv->wdev.cac_started) {
+ if (priv->wdev.links[0].cac_started) {
if (mwifiex_stop_radar_detection(priv, &priv->dfs_chandef))
mwifiex_dbg(priv->adapter, ERROR,
"failed to stop CAC in FW\n");
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -1880,7 +1880,7 @@ mwifiex_cfg80211_del_station(struct wiph
struct mwifiex_sta_node *sta_node;
u8 deauth_mac[ETH_ALEN];
- if (!priv->bss_started && priv->wdev.cac_started) {
+ if (!priv->bss_started && priv->wdev.links[0].cac_started) {
mwifiex_dbg(priv->adapter, INFO, "%s: abort CAC!\n", __func__);
mwifiex_abort_cac(priv);
}
@@ -3978,7 +3978,7 @@ mwifiex_cfg80211_channel_switch(struct w
return -EBUSY;
}
- if (priv->wdev.cac_started)
+ if (priv->wdev.links[0].cac_started)
return -EBUSY;
if (cfg80211_chandef_identical(&params->chandef,
--- a/drivers/net/wireless/quantenna/qtnfmac/event.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/event.c
@@ -520,21 +520,21 @@ static int qtnf_event_handle_radar(struc
cfg80211_radar_event(wiphy, &chandef, GFP_KERNEL);
break;
case QLINK_RADAR_CAC_FINISHED:
- if (!vif->wdev.cac_started)
+ if (!vif->wdev.links[0].cac_started)
break;
cfg80211_cac_event(vif->netdev, &chandef,
NL80211_RADAR_CAC_FINISHED, GFP_KERNEL);
break;
case QLINK_RADAR_CAC_ABORTED:
- if (!vif->wdev.cac_started)
+ if (!vif->wdev.links[0].cac_started)
break;
cfg80211_cac_event(vif->netdev, &chandef,
NL80211_RADAR_CAC_ABORTED, GFP_KERNEL);
break;
case QLINK_RADAR_CAC_STARTED:
- if (vif->wdev.cac_started)
+ if (vif->wdev.links[0].cac_started)
break;
if (!wiphy_ext_feature_isset(wiphy,
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -6198,9 +6198,6 @@ enum ieee80211_ap_reg_power {
* @address: The address for this device, valid only if @netdev is %NULL
* @is_running: true if this is a non-netdev device that has been started, e.g.
* the P2P Device.
- * @cac_started: true if DFS channel availability check has been started
- * @cac_start_time: timestamp (jiffies) when the dfs state was entered.
- * @cac_time_ms: CAC time in ms
* @ps: powersave mode is enabled
* @ps_timeout: dynamic powersave timeout
* @ap_unexpected_nlportid: (private) netlink port ID of application
@@ -6224,6 +6221,11 @@ enum ieee80211_ap_reg_power {
* unprotected beacon report
* @links: array of %IEEE80211_MLD_MAX_NUM_LINKS elements containing @addr
* @ap and @client for each link
+ * @links[].cac_started: true if DFS channel availability check has been
+ * started
+ * @links[].cac_start_time: timestamp (jiffies) when the dfs state was
+ * entered.
+ * @links[].cac_time_ms: CAC time in ms
* @valid_links: bitmap describing what elements of @links are valid
*/
struct wireless_dev {
@@ -6265,11 +6267,6 @@ struct wireless_dev {
u32 owner_nlportid;
bool nl_owner_dead;
- /* FIXME: need to rework radar detection for MLO */
- bool cac_started;
- unsigned long cac_start_time;
- unsigned int cac_time_ms;
-
#ifdef CPTCFG_CFG80211_WEXT
/* wext data */
struct {
@@ -6336,6 +6333,10 @@ struct wireless_dev {
struct cfg80211_internal_bss *current_bss;
} client;
};
+
+ bool cac_started;
+ unsigned long cac_start_time;
+ unsigned int cac_time_ms;
} links[IEEE80211_MLD_MAX_NUM_LINKS];
u16 valid_links;
};
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1656,7 +1656,7 @@ static int ieee80211_stop_ap(struct wiph
ieee80211_link_info_change_notify(sdata, link,
BSS_CHANGED_BEACON_ENABLED);
- if (sdata->wdev.cac_started) {
+ if (sdata->wdev.links[0].cac_started) {
chandef = link_conf->chanreq.oper;
wiphy_delayed_work_cancel(wiphy, &link->dfs_cac_timer_work);
cfg80211_cac_event(sdata->dev, &chandef,
@@ -3498,9 +3498,9 @@ static void ieee80211_end_cac(struct wip
wiphy_delayed_work_cancel(wiphy,
&sdata->deflink.dfs_cac_timer_work);
- if (sdata->wdev.cac_started) {
+ if (sdata->wdev.links[0].cac_started) {
ieee80211_link_release_channel(&sdata->deflink);
- sdata->wdev.cac_started = false;
+ sdata->wdev.links[0].cac_started = false;
}
}
}
@@ -3955,7 +3955,7 @@ __ieee80211_channel_switch(struct wiphy
if (!list_empty(&local->roc_list) || local->scanning)
return -EBUSY;
- if (sdata->wdev.cac_started)
+ if (sdata->wdev.links[0].cac_started)
return -EBUSY;
if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS))
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -553,7 +553,7 @@ static void ieee80211_do_stop(struct iee
wiphy_delayed_work_cancel(local->hw.wiphy,
&sdata->deflink.dfs_cac_timer_work);
- if (sdata->wdev.cac_started) {
+ if (sdata->wdev.links[0].cac_started) {
chandef = sdata->vif.bss_conf.chanreq.oper;
WARN_ON(local->suspended);
ieee80211_link_release_channel(&sdata->deflink);
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3039,7 +3039,7 @@ void ieee80211_dfs_cac_timer_work(struct
lockdep_assert_wiphy(sdata->local->hw.wiphy);
- if (sdata->wdev.cac_started) {
+ if (sdata->wdev.links[0].cac_started) {
ieee80211_link_release_channel(link);
cfg80211_cac_event(sdata->dev, &chandef,
NL80211_RADAR_CAC_FINISHED,
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -585,7 +585,7 @@ static bool __ieee80211_can_leave_ch(str
return false;
list_for_each_entry(sdata_iter, &local->interfaces, list) {
- if (sdata_iter->wdev.cac_started)
+ if (sdata_iter->wdev.links[0].cac_started)
return false;
}
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -3462,7 +3462,7 @@ void ieee80211_dfs_cac_cancel(struct iee
wiphy_delayed_work_cancel(local->hw.wiphy,
&sdata->deflink.dfs_cac_timer_work);
- if (sdata->wdev.cac_started) {
+ if (sdata->wdev.links[0].cac_started) {
chandef = sdata->vif.bss_conf.chanreq.oper;
ieee80211_link_release_channel(&sdata->deflink);
cfg80211_cac_event(sdata->dev,
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -94,7 +94,7 @@ int __cfg80211_join_ibss(struct cfg80211
lockdep_assert_held(&rdev->wiphy.mtx);
- if (wdev->cac_started)
+ if (wdev->links[0].cac_started)
return -EBUSY;
if (wdev->u.ibss.ssid_len)
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -127,7 +127,7 @@ int __cfg80211_join_mesh(struct cfg80211
if (!rdev->ops->join_mesh)
return -EOPNOTSUPP;
- if (wdev->cac_started)
+ if (wdev->links[0].cac_started)
return -EBUSY;
if (!setup->chandef.chan) {
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -1124,13 +1124,14 @@ void cfg80211_cac_event(struct net_devic
trace_cfg80211_cac_event(netdev, event);
- if (WARN_ON(!wdev->cac_started && event != NL80211_RADAR_CAC_STARTED))
+ if (WARN_ON(!wdev->links[0].cac_started &&
+ event != NL80211_RADAR_CAC_STARTED))
return;
switch (event) {
case NL80211_RADAR_CAC_FINISHED:
- timeout = wdev->cac_start_time +
- msecs_to_jiffies(wdev->cac_time_ms);
+ timeout = wdev->links[0].cac_start_time +
+ msecs_to_jiffies(wdev->links[0].cac_time_ms);
WARN_ON(!time_after_eq(jiffies, timeout));
cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
memcpy(&rdev->cac_done_chandef, chandef,
@@ -1139,10 +1140,10 @@ void cfg80211_cac_event(struct net_devic
cfg80211_sched_dfs_chan_update(rdev);
fallthrough;
case NL80211_RADAR_CAC_ABORTED:
- wdev->cac_started = false;
+ wdev->links[0].cac_started = false;
break;
case NL80211_RADAR_CAC_STARTED:
- wdev->cac_started = true;
+ wdev->links[0].cac_started = true;
break;
default:
WARN_ON(1);
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -6066,7 +6066,7 @@ static int nl80211_start_ap(struct sk_bu
if (!rdev->ops->start_ap)
return -EOPNOTSUPP;
- if (wdev->cac_started)
+ if (wdev->links[0].cac_started)
return -EBUSY;
if (wdev->links[link_id].ap.beacon_interval)
@@ -10122,7 +10122,7 @@ static int nl80211_start_radar_detection
goto unlock;
}
- if (cfg80211_beaconing_iface_active(wdev) || wdev->cac_started) {
+ if (cfg80211_beaconing_iface_active(wdev) || wdev->links[0].cac_started) {
err = -EBUSY;
goto unlock;
}
@@ -10158,9 +10158,9 @@ static int nl80211_start_radar_detection
default:
break;
}
- wdev->cac_started = true;
- wdev->cac_start_time = jiffies;
- wdev->cac_time_ms = cac_time_ms;
+ wdev->links[0].cac_started = true;
+ wdev->links[0].cac_start_time = jiffies;
+ wdev->links[0].cac_time_ms = cac_time_ms;
}
unlock:
wiphy_unlock(wiphy);
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -4241,7 +4241,7 @@ static void cfg80211_check_and_end_cac(s
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
struct cfg80211_chan_def *chandef;
- if (!wdev->cac_started)
+ if (!wdev->links[0].cac_started)
continue;
/* FIXME: radar detection is tied to link 0 for now */
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