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mac80211: backport support for background radar detection

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Will be used in an upcoming mt76 update

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2022-01-28 14:32:21 +01:00
parent 03ea0405a6
commit 0b5a547ef0
9 changed files with 1627 additions and 12 deletions
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378
package/kernel/mac80211/patches/subsys/314-cfg80211-implement-APIs-for-dedicated-radar-detectio.patch Normal file
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@ -0,0 +1,378 @@
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Sat, 23 Oct 2021 11:10:50 +0200
Subject: [PATCH] cfg80211: implement APIs for dedicated radar detection HW
If a dedicated (off-channel) radar detection hardware (chain)
is available in the hardware/driver, allow this to be used by
calling the NL80211_CMD_RADAR_DETECT command with a new flag
attribute requesting off-channel radar detection is used.
Offchannel CAC (channel availability check) avoids the CAC
downtime when switching to a radar channel or when turning on
the AP.
Drivers advertise support for this using the new feature flag
NL80211_EXT_FEATURE_RADAR_OFFCHAN.
Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/7468e291ef5d05d692c1738d25b8f778d8ea5c3f.1634979655.git.lorenzo@kernel.org
Link: https://lore.kernel.org/r/1e60e60fef00e14401adae81c3d49f3e5f307537.1634979655.git.lorenzo@kernel.org
Link: https://lore.kernel.org/r/85fa50f57fc3adb2934c8d9ca0be30394de6b7e8.1634979655.git.lorenzo@kernel.org
Link: https://lore.kernel.org/r/4b6c08671ad59aae0ac46fc94c02f31b1610eb72.1634979655.git.lorenzo@kernel.org
Link: https://lore.kernel.org/r/241849ccaf2c228873c6f8495bf87b19159ba458.1634979655.git.lorenzo@kernel.org
[remove offchan_mutex, fix cfg80211_stop_offchan_radar_detection(),
remove gfp_t argument, fix documentation, fix tracing]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -4057,6 +4057,15 @@ struct mgmt_frame_regs {
* @set_sar_specs: Update the SAR (TX power) settings.
*
* @color_change: Initiate a color change.
+ *
+ * @set_radar_offchan: Configure dedicated offchannel chain available for
+ * radar/CAC detection on some hw. This chain can't be used to transmit
+ * or receive frames and it is bounded to a running wdev.
+ * Offchannel radar/CAC detection allows to avoid the CAC downtime
+ * switching to a different channel during CAC detection on the selected
+ * radar channel.
+ * The caller is expected to set chandef pointer to NULL in order to
+ * disable offchannel CAC/radar detection.
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -4387,6 +4396,8 @@ struct cfg80211_ops {
int (*color_change)(struct wiphy *wiphy,
struct net_device *dev,
struct cfg80211_color_change_settings *params);
+ int (*set_radar_offchan)(struct wiphy *wiphy,
+ struct cfg80211_chan_def *chandef);
};
/*
@@ -7608,6 +7619,20 @@ void cfg80211_cac_event(struct net_devic
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event, gfp_t gfp);
+/**
+ * cfg80211_offchan_cac_event - Channel Availability Check (CAC) offchan event
+ * @wiphy: the wiphy
+ * @chandef: chandef for the current channel
+ * @event: type of event
+ *
+ * This function is called when a Channel Availability Check (CAC) is finished,
+ * started or aborted by a offchannel dedicated chain.
+ *
+ * Note that this acquires the wiphy lock.
+ */
+void cfg80211_offchan_cac_event(struct wiphy *wiphy,
+ const struct cfg80211_chan_def *chandef,
+ enum nl80211_radar_event event);
/**
* cfg80211_gtk_rekey_notify - notify userspace about driver rekeying
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2608,6 +2608,13 @@ enum nl80211_commands {
* Mandatory parameter for the transmitting interface to enable MBSSID.
* Optional for the non-transmitting interfaces.
*
+ * @NL80211_ATTR_RADAR_OFFCHAN: Configure dedicated offchannel chain available for
+ * radar/CAC detection on some hw. This chain can't be used to transmit
+ * or receive frames and it is bounded to a running wdev.
+ * Offchannel radar/CAC detection allows to avoid the CAC downtime
+ * switching on a different channel during CAC detection on the selected
+ * radar channel.
+ *
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -3114,6 +3121,8 @@ enum nl80211_attrs {
NL80211_ATTR_MBSSID_CONFIG,
NL80211_ATTR_MBSSID_ELEMS,
+ NL80211_ATTR_RADAR_OFFCHAN,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -6013,6 +6022,9 @@ enum nl80211_feature_flags {
* @NL80211_EXT_FEATURE_BSS_COLOR: The driver supports BSS color collision
* detection and change announcemnts.
*
+ * @NL80211_EXT_FEATURE_RADAR_OFFCHAN: Device supports offchannel radar/CAC
+ * detection.
+ *
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@@ -6078,6 +6090,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_SECURE_RTT,
NL80211_EXT_FEATURE_PROT_RANGE_NEGO_AND_MEASURE,
NL80211_EXT_FEATURE_BSS_COLOR,
+ NL80211_EXT_FEATURE_RADAR_OFFCHAN,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -552,6 +552,7 @@ use_default_name:
INIT_WORK(&rdev->rfkill_block, cfg80211_rfkill_block_work);
INIT_WORK(&rdev->conn_work, cfg80211_conn_work);
INIT_WORK(&rdev->event_work, cfg80211_event_work);
+ INIT_DELAYED_WORK(&rdev->offchan_cac_work, cfg80211_offchan_cac_work);
init_waitqueue_head(&rdev->dev_wait);
@@ -1214,6 +1215,8 @@ void __cfg80211_leave(struct cfg80211_re
cfg80211_pmsr_wdev_down(wdev);
+ cfg80211_stop_offchan_radar_detection(wdev);
+
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:
__cfg80211_leave_ibss(rdev, dev, true);
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -84,6 +84,10 @@ struct cfg80211_registered_device {
struct delayed_work dfs_update_channels_wk;
+ struct wireless_dev *offchan_radar_wdev;
+ struct cfg80211_chan_def offchan_radar_chandef;
+ struct delayed_work offchan_cac_work;
+
/* netlink port which started critical protocol (0 means not started) */
u32 crit_proto_nlportid;
@@ -491,6 +495,15 @@ cfg80211_chandef_dfs_cac_time(struct wip
void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev);
+int
+cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev,
+ struct cfg80211_chan_def *chandef);
+
+void cfg80211_stop_offchan_radar_detection(struct wireless_dev *wdev);
+
+void cfg80211_offchan_cac_work(struct work_struct *work);
+
bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
struct ieee80211_channel *chan);
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -970,3 +970,116 @@ void cfg80211_cac_event(struct net_devic
nl80211_radar_notify(rdev, chandef, event, netdev, gfp);
}
EXPORT_SYMBOL(cfg80211_cac_event);
+
+void cfg80211_offchan_cac_work(struct work_struct *work)
+{
+ struct delayed_work *delayed_work = to_delayed_work(work);
+ struct cfg80211_registered_device *rdev;
+
+ rdev = container_of(delayed_work, struct cfg80211_registered_device,
+ offchan_cac_work);
+ cfg80211_offchan_cac_event(&rdev->wiphy, &rdev->offchan_radar_chandef,
+ NL80211_RADAR_CAC_FINISHED);
+}
+
+static void
+__cfg80211_offchan_cac_event(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev,
+ const struct cfg80211_chan_def *chandef,
+ enum nl80211_radar_event event)
+{
+ struct wiphy *wiphy = &rdev->wiphy;
+ struct net_device *netdev;
+
+ lockdep_assert_wiphy(&rdev->wiphy);
+
+ if (event != NL80211_RADAR_CAC_STARTED && !rdev->offchan_radar_wdev)
+ return;
+
+ switch (event) {
+ case NL80211_RADAR_CAC_FINISHED:
+ cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
+ memcpy(&rdev->cac_done_chandef, chandef, sizeof(*chandef));
+ queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk);
+ cfg80211_sched_dfs_chan_update(rdev);
+ wdev = rdev->offchan_radar_wdev;
+ rdev->offchan_radar_wdev = NULL;
+ break;
+ case NL80211_RADAR_CAC_ABORTED:
+ cancel_delayed_work(&rdev->offchan_cac_work);
+ wdev = rdev->offchan_radar_wdev;
+ rdev->offchan_radar_wdev = NULL;
+ break;
+ case NL80211_RADAR_CAC_STARTED:
+ WARN_ON(!wdev);
+ rdev->offchan_radar_wdev = wdev;
+ break;
+ default:
+ return;
+ }
+
+ netdev = wdev ? wdev->netdev : NULL;
+ nl80211_radar_notify(rdev, chandef, event, netdev, GFP_KERNEL);
+}
+
+void cfg80211_offchan_cac_event(struct wiphy *wiphy,
+ const struct cfg80211_chan_def *chandef,
+ enum nl80211_radar_event event)
+{
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+
+ wiphy_lock(wiphy);
+ __cfg80211_offchan_cac_event(rdev, NULL, chandef, event);
+ wiphy_unlock(wiphy);
+}
+EXPORT_SYMBOL(cfg80211_offchan_cac_event);
+
+int
+cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev,
+ struct cfg80211_chan_def *chandef)
+{
+ unsigned int cac_time_ms;
+ int err;
+
+ lockdep_assert_wiphy(&rdev->wiphy);
+
+ if (!wiphy_ext_feature_isset(&rdev->wiphy,
+ NL80211_EXT_FEATURE_RADAR_OFFCHAN))
+ return -EOPNOTSUPP;
+
+ if (rdev->offchan_radar_wdev)
+ return -EBUSY;
+
+ err = rdev_set_radar_offchan(rdev, chandef);
+ if (err)
+ return err;
+
+ cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, chandef);
+ if (!cac_time_ms)
+ cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
+
+ rdev->offchan_radar_chandef = *chandef;
+ __cfg80211_offchan_cac_event(rdev, wdev, chandef,
+ NL80211_RADAR_CAC_STARTED);
+ queue_delayed_work(cfg80211_wq, &rdev->offchan_cac_work,
+ msecs_to_jiffies(cac_time_ms));
+
+ return 0;
+}
+
+void cfg80211_stop_offchan_radar_detection(struct wireless_dev *wdev)
+{
+ struct wiphy *wiphy = wdev->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+
+ lockdep_assert_wiphy(wiphy);
+
+ if (wdev != rdev->offchan_radar_wdev)
+ return;
+
+ rdev_set_radar_offchan(rdev, NULL);
+
+ __cfg80211_offchan_cac_event(rdev, NULL, NULL,
+ NL80211_RADAR_CAC_ABORTED);
+}
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -793,6 +793,7 @@ static const struct nla_policy nl80211_p
[NL80211_ATTR_MBSSID_CONFIG] =
NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
[NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
+ [NL80211_ATTR_RADAR_OFFCHAN] = { .type = NLA_FLAG },
};
/* policy for the key attributes */
@@ -9269,12 +9270,6 @@ static int nl80211_start_radar_detection
if (err)
return err;
- if (netif_carrier_ok(dev))
- return -EBUSY;
-
- if (wdev->cac_started)
- return -EBUSY;
-
err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
if (err < 0)
return err;
@@ -9285,6 +9280,16 @@ static int nl80211_start_radar_detection
if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
return -EINVAL;
+ if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_OFFCHAN]))
+ return cfg80211_start_offchan_radar_detection(rdev, wdev,
+ &chandef);
+
+ if (netif_carrier_ok(dev))
+ return -EBUSY;
+
+ if (wdev->cac_started)
+ return -EBUSY;
+
/* CAC start is offloaded to HW and can't be started manually */
if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
return -EOPNOTSUPP;
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -1381,4 +1381,21 @@ static inline int rdev_color_change(stru
return ret;
}
+static inline int
+rdev_set_radar_offchan(struct cfg80211_registered_device *rdev,
+ struct cfg80211_chan_def *chandef)
+{
+ struct wiphy *wiphy = &rdev->wiphy;
+ int ret;
+
+ if (!rdev->ops->set_radar_offchan)
+ return -EOPNOTSUPP;
+
+ trace_rdev_set_radar_offchan(wiphy, chandef);
+ ret = rdev->ops->set_radar_offchan(wiphy, chandef);
+ trace_rdev_return_int(wiphy, ret);
+
+ return ret;
+}
+
#endif /* __CFG80211_RDEV_OPS */
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -3643,6 +3643,25 @@ TRACE_EVENT(cfg80211_bss_color_notify,
__entry->color_bitmap)
);
+TRACE_EVENT(rdev_set_radar_offchan,
+ TP_PROTO(struct wiphy *wiphy, struct cfg80211_chan_def *chandef),
+
+ TP_ARGS(wiphy, chandef),
+
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ CHAN_DEF_ENTRY
+ ),
+
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ CHAN_DEF_ASSIGN(chandef)
+ ),
+
+ TP_printk(WIPHY_PR_FMT ", " CHAN_DEF_PR_FMT,
+ WIPHY_PR_ARG, CHAN_DEF_PR_ARG)
+);
+
#endif /* !__RDEV_OPS_TRACE || TRACE_HEADER_MULTI_READ */
#undef TRACE_INCLUDE_PATH

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@ -0,0 +1,183 @@
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Wed, 27 Oct 2021 11:03:42 +0200
Subject: [PATCH] cfg80211: move offchan_cac_event to a dedicated work
In order to make cfg80211_offchan_cac_abort() (renamed from
cfg80211_offchan_cac_event) callable in other contexts and
without so much locking restrictions, make it trigger a new
work instead of operating directly.
Do some other renames while at it to clarify.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/6145c3d0f30400a568023f67981981d24c7c6133.1635325205.git.lorenzo@kernel.org
[rewrite commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -7620,19 +7620,13 @@ void cfg80211_cac_event(struct net_devic
enum nl80211_radar_event event, gfp_t gfp);
/**
- * cfg80211_offchan_cac_event - Channel Availability Check (CAC) offchan event
+ * cfg80211_offchan_cac_abort - Channel Availability Check offchan abort event
* @wiphy: the wiphy
- * @chandef: chandef for the current channel
- * @event: type of event
*
- * This function is called when a Channel Availability Check (CAC) is finished,
- * started or aborted by a offchannel dedicated chain.
- *
- * Note that this acquires the wiphy lock.
+ * This function is called by the driver when a Channel Availability Check
+ * (CAC) is aborted by a offchannel dedicated chain.
*/
-void cfg80211_offchan_cac_event(struct wiphy *wiphy,
- const struct cfg80211_chan_def *chandef,
- enum nl80211_radar_event event);
+void cfg80211_offchan_cac_abort(struct wiphy *wiphy);
/**
* cfg80211_gtk_rekey_notify - notify userspace about driver rekeying
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -552,7 +552,9 @@ use_default_name:
INIT_WORK(&rdev->rfkill_block, cfg80211_rfkill_block_work);
INIT_WORK(&rdev->conn_work, cfg80211_conn_work);
INIT_WORK(&rdev->event_work, cfg80211_event_work);
- INIT_DELAYED_WORK(&rdev->offchan_cac_work, cfg80211_offchan_cac_work);
+ INIT_WORK(&rdev->offchan_cac_abort_wk, cfg80211_offchan_cac_abort_wk);
+ INIT_DELAYED_WORK(&rdev->offchan_cac_done_wk,
+ cfg80211_offchan_cac_done_wk);
init_waitqueue_head(&rdev->dev_wait);
@@ -1062,11 +1064,13 @@ void wiphy_unregister(struct wiphy *wiph
cancel_work_sync(&rdev->conn_work);
flush_work(&rdev->event_work);
cancel_delayed_work_sync(&rdev->dfs_update_channels_wk);
+ cancel_delayed_work_sync(&rdev->offchan_cac_done_wk);
flush_work(&rdev->destroy_work);
flush_work(&rdev->sched_scan_stop_wk);
flush_work(&rdev->propagate_radar_detect_wk);
flush_work(&rdev->propagate_cac_done_wk);
flush_work(&rdev->mgmt_registrations_update_wk);
+ flush_work(&rdev->offchan_cac_abort_wk);
#ifdef CONFIG_PM
if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup)
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -86,7 +86,8 @@ struct cfg80211_registered_device {
struct wireless_dev *offchan_radar_wdev;
struct cfg80211_chan_def offchan_radar_chandef;
- struct delayed_work offchan_cac_work;
+ struct delayed_work offchan_cac_done_wk;
+ struct work_struct offchan_cac_abort_wk;
/* netlink port which started critical protocol (0 means not started) */
u32 crit_proto_nlportid;
@@ -502,7 +503,9 @@ cfg80211_start_offchan_radar_detection(s
void cfg80211_stop_offchan_radar_detection(struct wireless_dev *wdev);
-void cfg80211_offchan_cac_work(struct work_struct *work);
+void cfg80211_offchan_cac_done_wk(struct work_struct *work);
+
+void cfg80211_offchan_cac_abort_wk(struct work_struct *work);
bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
struct ieee80211_channel *chan);
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -971,17 +971,6 @@ void cfg80211_cac_event(struct net_devic
}
EXPORT_SYMBOL(cfg80211_cac_event);
-void cfg80211_offchan_cac_work(struct work_struct *work)
-{
- struct delayed_work *delayed_work = to_delayed_work(work);
- struct cfg80211_registered_device *rdev;
-
- rdev = container_of(delayed_work, struct cfg80211_registered_device,
- offchan_cac_work);
- cfg80211_offchan_cac_event(&rdev->wiphy, &rdev->offchan_radar_chandef,
- NL80211_RADAR_CAC_FINISHED);
-}
-
static void
__cfg80211_offchan_cac_event(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
@@ -1006,7 +995,7 @@ __cfg80211_offchan_cac_event(struct cfg8
rdev->offchan_radar_wdev = NULL;
break;
case NL80211_RADAR_CAC_ABORTED:
- cancel_delayed_work(&rdev->offchan_cac_work);
+ cancel_delayed_work(&rdev->offchan_cac_done_wk);
wdev = rdev->offchan_radar_wdev;
rdev->offchan_radar_wdev = NULL;
break;
@@ -1022,17 +1011,44 @@ __cfg80211_offchan_cac_event(struct cfg8
nl80211_radar_notify(rdev, chandef, event, netdev, GFP_KERNEL);
}
-void cfg80211_offchan_cac_event(struct wiphy *wiphy,
- const struct cfg80211_chan_def *chandef,
- enum nl80211_radar_event event)
+static void
+cfg80211_offchan_cac_event(struct cfg80211_registered_device *rdev,
+ const struct cfg80211_chan_def *chandef,
+ enum nl80211_radar_event event)
+{
+ wiphy_lock(&rdev->wiphy);
+ __cfg80211_offchan_cac_event(rdev, NULL, chandef, event);
+ wiphy_unlock(&rdev->wiphy);
+}
+
+void cfg80211_offchan_cac_done_wk(struct work_struct *work)
+{
+ struct delayed_work *delayed_work = to_delayed_work(work);
+ struct cfg80211_registered_device *rdev;
+
+ rdev = container_of(delayed_work, struct cfg80211_registered_device,
+ offchan_cac_done_wk);
+ cfg80211_offchan_cac_event(rdev, &rdev->offchan_radar_chandef,
+ NL80211_RADAR_CAC_FINISHED);
+}
+
+void cfg80211_offchan_cac_abort_wk(struct work_struct *work)
+{
+ struct cfg80211_registered_device *rdev;
+
+ rdev = container_of(work, struct cfg80211_registered_device,
+ offchan_cac_abort_wk);
+ cfg80211_offchan_cac_event(rdev, &rdev->offchan_radar_chandef,
+ NL80211_RADAR_CAC_ABORTED);
+}
+
+void cfg80211_offchan_cac_abort(struct wiphy *wiphy)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
- wiphy_lock(wiphy);
- __cfg80211_offchan_cac_event(rdev, NULL, chandef, event);
- wiphy_unlock(wiphy);
+ queue_work(cfg80211_wq, &rdev->offchan_cac_abort_wk);
}
-EXPORT_SYMBOL(cfg80211_offchan_cac_event);
+EXPORT_SYMBOL(cfg80211_offchan_cac_abort);
int
cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev,
@@ -1062,7 +1078,7 @@ cfg80211_start_offchan_radar_detection(s
rdev->offchan_radar_chandef = *chandef;
__cfg80211_offchan_cac_event(rdev, wdev, chandef,
NL80211_RADAR_CAC_STARTED);
- queue_delayed_work(cfg80211_wq, &rdev->offchan_cac_work,
+ queue_delayed_work(cfg80211_wq, &rdev->offchan_cac_done_wk,
msecs_to_jiffies(cac_time_ms));
return 0;

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@ -0,0 +1,99 @@
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Wed, 3 Nov 2021 18:02:35 +0100
Subject: [PATCH] cfg80211: fix possible NULL pointer dereference in
cfg80211_stop_offchan_radar_detection
Fix the following NULL pointer dereference in
cfg80211_stop_offchan_radar_detection routine that occurs when hostapd
is stopped during the CAC on offchannel chain:
Sat Jan 1 0[ 779.567851] ESR = 0x96000005
0:12:50 2000 dae[ 779.572346] EC = 0x25: DABT (current EL), IL = 32 bits
mon.debug hostap[ 779.578984] SET = 0, FnV = 0
d: hostapd_inter[ 779.583445] EA = 0, S1PTW = 0
face_deinit_free[ 779.587936] Data abort info:
: num_bss=1 conf[ 779.592224] ISV = 0, ISS = 0x00000005
->num_bss=1
Sat[ 779.597403] CM = 0, WnR = 0
Jan 1 00:12:50[ 779.601749] user pgtable: 4k pages, 39-bit VAs, pgdp=00000000418b2000
2000 daemon.deb[ 779.609601] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000
ug hostapd: host[ 779.619657] Internal error: Oops: 96000005 [#1] SMP
[ 779.770810] CPU: 0 PID: 2202 Comm: hostapd Not tainted 5.10.75 #0
[ 779.776892] Hardware name: MediaTek MT7622 RFB1 board (DT)
[ 779.782370] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--)
[ 779.788384] pc : cfg80211_chandef_valid+0x10/0x490 [cfg80211]
[ 779.794128] lr : cfg80211_check_station_change+0x3190/0x3950 [cfg80211]
[ 779.800731] sp : ffffffc01204b7e0
[ 779.804036] x29: ffffffc01204b7e0 x28: ffffff80039bdc00
[ 779.809340] x27: 0000000000000000 x26: ffffffc008cb3050
[ 779.814644] x25: 0000000000000000 x24: 0000000000000002
[ 779.819948] x23: ffffff8002630000 x22: ffffff8003e748d0
[ 779.825252] x21: 0000000000000cc0 x20: ffffff8003da4a00
[ 779.830556] x19: 0000000000000000 x18: ffffff8001bf7ce0
[ 779.835860] x17: 00000000ffffffff x16: 0000000000000000
[ 779.841164] x15: 0000000040d59200 x14: 00000000000019c0
[ 779.846467] x13: 00000000000001c8 x12: 000636b9e9dab1c6
[ 779.851771] x11: 0000000000000141 x10: 0000000000000820
[ 779.857076] x9 : 0000000000000000 x8 : ffffff8003d7d038
[ 779.862380] x7 : 0000000000000000 x6 : ffffff8003d7d038
[ 779.867683] x5 : 0000000000000e90 x4 : 0000000000000038
[ 779.872987] x3 : 0000000000000002 x2 : 0000000000000004
[ 779.878291] x1 : 0000000000000000 x0 : 0000000000000000
[ 779.883594] Call trace:
[ 779.886039] cfg80211_chandef_valid+0x10/0x490 [cfg80211]
[ 779.891434] cfg80211_check_station_change+0x3190/0x3950 [cfg80211]
[ 779.897697] nl80211_radar_notify+0x138/0x19c [cfg80211]
[ 779.903005] cfg80211_stop_offchan_radar_detection+0x7c/0x8c [cfg80211]
[ 779.909616] __cfg80211_leave+0x2c/0x190 [cfg80211]
[ 779.914490] cfg80211_register_netdevice+0x1c0/0x6d0 [cfg80211]
[ 779.920404] raw_notifier_call_chain+0x50/0x70
[ 779.924841] call_netdevice_notifiers_info+0x54/0xa0
[ 779.929796] __dev_close_many+0x40/0x100
[ 779.933712] __dev_change_flags+0x98/0x190
[ 779.937800] dev_change_flags+0x20/0x60
[ 779.941628] devinet_ioctl+0x534/0x6d0
[ 779.945370] inet_ioctl+0x1bc/0x230
[ 779.948849] sock_do_ioctl+0x44/0x200
[ 779.952502] sock_ioctl+0x268/0x4c0
[ 779.955985] __arm64_sys_ioctl+0xac/0xd0
[ 779.959900] el0_svc_common.constprop.0+0x60/0x110
[ 779.964682] do_el0_svc+0x1c/0x24
[ 779.967990] el0_svc+0x10/0x1c
[ 779.971036] el0_sync_handler+0x9c/0x120
[ 779.974950] el0_sync+0x148/0x180
[ 779.978259] Code: a9bc7bfd 910003fd a90153f3 aa0003f3 (f9400000)
[ 779.984344] ---[ end trace 0e67b4f5d6cdeec7 ]---
[ 779.996400] Kernel panic - not syncing: Oops: Fatal exception
[ 780.002139] SMP: stopping secondary CPUs
[ 780.006057] Kernel Offset: disabled
[ 780.009537] CPU features: 0x0000002,04002004
[ 780.013796] Memory Limit: none
Fixes: b8f5facf286b ("cfg80211: implement APIs for dedicated radar detection HW")
Reported-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/c2e34c065bf8839c5ffa45498ae154021a72a520.1635958796.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -982,6 +982,9 @@ __cfg80211_offchan_cac_event(struct cfg8
lockdep_assert_wiphy(&rdev->wiphy);
+ if (!cfg80211_chandef_valid(chandef))
+ return;
+
if (event != NL80211_RADAR_CAC_STARTED && !rdev->offchan_radar_wdev)
return;
@@ -1096,6 +1099,6 @@ void cfg80211_stop_offchan_radar_detecti
rdev_set_radar_offchan(rdev, NULL);
- __cfg80211_offchan_cac_event(rdev, NULL, NULL,
+ __cfg80211_offchan_cac_event(rdev, wdev, &rdev->offchan_radar_chandef,
NL80211_RADAR_CAC_ABORTED);
}

136
package/kernel/mac80211/patches/subsys/317-cfg80211-schedule-offchan_cac_abort_wk-in-cfg80211_r.patch Normal file
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@ -0,0 +1,136 @@
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Tue, 16 Nov 2021 12:41:52 +0100
Subject: [PATCH] cfg80211: schedule offchan_cac_abort_wk in
cfg80211_radar_event
If necessary schedule offchan_cac_abort_wk work in cfg80211_radar_event
routine adding offchan parameter to cfg80211_radar_event signature.
Rename cfg80211_radar_event in __cfg80211_radar_event and introduce
the two following inline helpers:
- cfg80211_radar_event
- cfg80211_offchan_radar_event
Doing so the drv will not need to run cfg80211_offchan_cac_abort() after
radar detection on the offchannel chain.
Tested-by: Owen Peng <owen.peng@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/3ff583e021e3343a3ced54a7b09b5e184d1880dc.1637062727.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -7580,15 +7580,33 @@ void cfg80211_cqm_txe_notify(struct net_
void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp);
/**
- * cfg80211_radar_event - radar detection event
+ * __cfg80211_radar_event - radar detection event
* @wiphy: the wiphy
* @chandef: chandef for the current channel
+ * @offchan: the radar has been detected on the offchannel chain
* @gfp: context flags
*
* This function is called when a radar is detected on the current chanenl.
*/
-void cfg80211_radar_event(struct wiphy *wiphy,
- struct cfg80211_chan_def *chandef, gfp_t gfp);
+void __cfg80211_radar_event(struct wiphy *wiphy,
+ struct cfg80211_chan_def *chandef,
+ bool offchan, gfp_t gfp);
+
+static inline void
+cfg80211_radar_event(struct wiphy *wiphy,
+ struct cfg80211_chan_def *chandef,
+ gfp_t gfp)
+{
+ __cfg80211_radar_event(wiphy, chandef, false, gfp);
+}
+
+static inline void
+cfg80211_offchan_radar_event(struct wiphy *wiphy,
+ struct cfg80211_chan_def *chandef,
+ gfp_t gfp)
+{
+ __cfg80211_radar_event(wiphy, chandef, true, gfp);
+}
/**
* cfg80211_sta_opmode_change_notify - STA's ht/vht operation mode change event
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -905,13 +905,13 @@ void cfg80211_dfs_channels_update_work(s
}
-void cfg80211_radar_event(struct wiphy *wiphy,
- struct cfg80211_chan_def *chandef,
- gfp_t gfp)
+void __cfg80211_radar_event(struct wiphy *wiphy,
+ struct cfg80211_chan_def *chandef,
+ bool offchan, gfp_t gfp)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
- trace_cfg80211_radar_event(wiphy, chandef);
+ trace_cfg80211_radar_event(wiphy, chandef, offchan);
/* only set the chandef supplied channel to unavailable, in
* case the radar is detected on only one of multiple channels
@@ -919,6 +919,9 @@ void cfg80211_radar_event(struct wiphy *
*/
cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE);
+ if (offchan)
+ queue_work(cfg80211_wq, &rdev->offchan_cac_abort_wk);
+
cfg80211_sched_dfs_chan_update(rdev);
nl80211_radar_notify(rdev, chandef, NL80211_RADAR_DETECTED, NULL, gfp);
@@ -926,7 +929,7 @@ void cfg80211_radar_event(struct wiphy *
memcpy(&rdev->radar_chandef, chandef, sizeof(struct cfg80211_chan_def));
queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
}
-EXPORT_SYMBOL(cfg80211_radar_event);
+EXPORT_SYMBOL(__cfg80211_radar_event);
void cfg80211_cac_event(struct net_device *netdev,
const struct cfg80211_chan_def *chandef,
@@ -998,7 +1001,8 @@ __cfg80211_offchan_cac_event(struct cfg8
rdev->offchan_radar_wdev = NULL;
break;
case NL80211_RADAR_CAC_ABORTED:
- cancel_delayed_work(&rdev->offchan_cac_done_wk);
+ if (!cancel_delayed_work(&rdev->offchan_cac_done_wk))
+ return;
wdev = rdev->offchan_radar_wdev;
rdev->offchan_radar_wdev = NULL;
break;
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -3022,18 +3022,21 @@ TRACE_EVENT(cfg80211_ch_switch_started_n
);
TRACE_EVENT(cfg80211_radar_event,
- TP_PROTO(struct wiphy *wiphy, struct cfg80211_chan_def *chandef),
- TP_ARGS(wiphy, chandef),
+ TP_PROTO(struct wiphy *wiphy, struct cfg80211_chan_def *chandef,
+ bool offchan),
+ TP_ARGS(wiphy, chandef, offchan),
TP_STRUCT__entry(
WIPHY_ENTRY
CHAN_DEF_ENTRY
+ __field(bool, offchan)
),
TP_fast_assign(
WIPHY_ASSIGN;
CHAN_DEF_ASSIGN(chandef);
+ __entry->offchan = offchan;
),
- TP_printk(WIPHY_PR_FMT ", " CHAN_DEF_PR_FMT,
- WIPHY_PR_ARG, CHAN_DEF_PR_ARG)
+ TP_printk(WIPHY_PR_FMT ", " CHAN_DEF_PR_FMT ", offchan %d",
+ WIPHY_PR_ARG, CHAN_DEF_PR_ARG, __entry->offchan)
);
TRACE_EVENT(cfg80211_cac_event,

220
package/kernel/mac80211/patches/subsys/318-cfg80211-allow-continuous-radar-monitoring-on-offcha.patch Normal file
View File

@ -0,0 +1,220 @@
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Tue, 16 Nov 2021 15:03:36 +0100
Subject: [PATCH] cfg80211: allow continuous radar monitoring on offchannel
chain
Allow continuous radar detection on the offchannel chain in order
to switch to the monitored channel whenever the underlying driver
reports a radar pattern on the main channel.
Tested-by: Owen Peng <owen.peng@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/d46217310a49b14ff0e9c002f0a6e0547d70fd2c.1637071350.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -712,6 +712,19 @@ static bool cfg80211_is_wiphy_oper_chan(
return false;
}
+static bool
+cfg80211_offchan_chain_is_active(struct cfg80211_registered_device *rdev,
+ struct ieee80211_channel *channel)
+{
+ if (!rdev->offchan_radar_wdev)
+ return false;
+
+ if (!cfg80211_chandef_valid(&rdev->offchan_radar_chandef))
+ return false;
+
+ return cfg80211_is_sub_chan(&rdev->offchan_radar_chandef, channel);
+}
+
bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
struct ieee80211_channel *chan)
{
@@ -728,6 +741,9 @@ bool cfg80211_any_wiphy_oper_chan(struct
if (cfg80211_is_wiphy_oper_chan(&rdev->wiphy, chan))
return true;
+
+ if (cfg80211_offchan_chain_is_active(rdev, chan))
+ return true;
}
return false;
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -988,7 +988,7 @@ __cfg80211_offchan_cac_event(struct cfg8
if (!cfg80211_chandef_valid(chandef))
return;
- if (event != NL80211_RADAR_CAC_STARTED && !rdev->offchan_radar_wdev)
+ if (!rdev->offchan_radar_wdev)
return;
switch (event) {
@@ -998,17 +998,13 @@ __cfg80211_offchan_cac_event(struct cfg8
queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk);
cfg80211_sched_dfs_chan_update(rdev);
wdev = rdev->offchan_radar_wdev;
- rdev->offchan_radar_wdev = NULL;
break;
case NL80211_RADAR_CAC_ABORTED:
if (!cancel_delayed_work(&rdev->offchan_cac_done_wk))
return;
wdev = rdev->offchan_radar_wdev;
- rdev->offchan_radar_wdev = NULL;
break;
case NL80211_RADAR_CAC_STARTED:
- WARN_ON(!wdev);
- rdev->offchan_radar_wdev = wdev;
break;
default:
return;
@@ -1024,7 +1020,8 @@ cfg80211_offchan_cac_event(struct cfg802
enum nl80211_radar_event event)
{
wiphy_lock(&rdev->wiphy);
- __cfg80211_offchan_cac_event(rdev, NULL, chandef, event);
+ __cfg80211_offchan_cac_event(rdev, rdev->offchan_radar_wdev,
+ chandef, event);
wiphy_unlock(&rdev->wiphy);
}
@@ -1071,7 +1068,13 @@ cfg80211_start_offchan_radar_detection(s
NL80211_EXT_FEATURE_RADAR_OFFCHAN))
return -EOPNOTSUPP;
- if (rdev->offchan_radar_wdev)
+ /* Offchannel chain already locked by another wdev */
+ if (rdev->offchan_radar_wdev && rdev->offchan_radar_wdev != wdev)
+ return -EBUSY;
+
+ /* CAC already in progress on the offchannel chain */
+ if (rdev->offchan_radar_wdev == wdev &&
+ delayed_work_pending(&rdev->offchan_cac_done_wk))
return -EBUSY;
err = rdev_set_radar_offchan(rdev, chandef);
@@ -1083,6 +1086,8 @@ cfg80211_start_offchan_radar_detection(s
cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
rdev->offchan_radar_chandef = *chandef;
+ rdev->offchan_radar_wdev = wdev; /* Get offchain ownership */
+
__cfg80211_offchan_cac_event(rdev, wdev, chandef,
NL80211_RADAR_CAC_STARTED);
queue_delayed_work(cfg80211_wq, &rdev->offchan_cac_done_wk,
@@ -1102,6 +1107,7 @@ void cfg80211_stop_offchan_radar_detecti
return;
rdev_set_radar_offchan(rdev, NULL);
+ rdev->offchan_radar_wdev = NULL; /* Release offchain ownership */
__cfg80211_offchan_cac_event(rdev, wdev, &rdev->offchan_radar_chandef,
NL80211_RADAR_CAC_ABORTED);
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -9260,42 +9260,60 @@ static int nl80211_start_radar_detection
struct cfg80211_chan_def chandef;
enum nl80211_dfs_regions dfs_region;
unsigned int cac_time_ms;
- int err;
+ int err = -EINVAL;
+
+ flush_delayed_work(&rdev->dfs_update_channels_wk);
+
+ wiphy_lock(wiphy);
dfs_region = reg_get_dfs_region(wiphy);
if (dfs_region == NL80211_DFS_UNSET)
- return -EINVAL;
+ goto unlock;
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err)
- return err;
+ goto unlock;
err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
if (err < 0)
- return err;
+ goto unlock;
- if (err == 0)
- return -EINVAL;
+ if (err == 0) {
+ err = -EINVAL;
+ goto unlock;
+ }
- if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
- return -EINVAL;
+ if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
+ err = -EINVAL;
+ goto unlock;
+ }
- if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_OFFCHAN]))
- return cfg80211_start_offchan_radar_detection(rdev, wdev,
- &chandef);
+ if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_OFFCHAN])) {
+ err = cfg80211_start_offchan_radar_detection(rdev, wdev,
+ &chandef);
+ goto unlock;
+ }
- if (netif_carrier_ok(dev))
- return -EBUSY;
+ if (netif_carrier_ok(dev)) {
+ err = -EBUSY;
+ goto unlock;
+ }
- if (wdev->cac_started)
- return -EBUSY;
+ if (wdev->cac_started) {
+ err = -EBUSY;
+ goto unlock;
+ }
/* CAC start is offloaded to HW and can't be started manually */
- if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
- return -EOPNOTSUPP;
+ if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
+ err = -EOPNOTSUPP;
+ goto unlock;
+ }
- if (!rdev->ops->start_radar_detection)
- return -EOPNOTSUPP;
+ if (!rdev->ops->start_radar_detection) {
+ err = -EOPNOTSUPP;
+ goto unlock;
+ }
cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
if (WARN_ON(!cac_time_ms))
@@ -9308,6 +9326,9 @@ static int nl80211_start_radar_detection
wdev->cac_start_time = jiffies;
wdev->cac_time_ms = cac_time_ms;
}
+unlock:
+ wiphy_unlock(wiphy);
+
return err;
}
@@ -15926,7 +15947,8 @@ static const struct genl_small_ops nl802
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_start_radar_detection,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NO_WIPHY_MTX,
},
{
.cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,

67
package/kernel/mac80211/patches/subsys/319-mac80211-introduce-set_radar_offchan-callback.patch Normal file
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@ -0,0 +1,67 @@
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Sat, 23 Oct 2021 11:10:51 +0200
Subject: [PATCH] mac80211: introduce set_radar_offchan callback
Similar to cfg80211, introduce set_radar_offchan callback in mac80211_ops
in order to configure a dedicated offchannel chain available on some hw
(e.g. mt7915) to perform offchannel CAC detection and avoid tx/rx downtime.
Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/201110606d4f3a7dfdf31440e351f2e2c375d4f0.1634979655.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -3937,6 +3937,14 @@ struct ieee80211_prep_tx_info {
* twt structure.
* @twt_teardown_request: Update the hw with TWT teardown request received
* from the peer.
+ * @set_radar_offchan: Configure dedicated offchannel chain available for
+ * radar/CAC detection on some hw. This chain can't be used to transmit
+ * or receive frames and it is bounded to a running wdev.
+ * Offchannel radar/CAC detection allows to avoid the CAC downtime
+ * switching to a different channel during CAC detection on the selected
+ * radar channel.
+ * The caller is expected to set chandef pointer to NULL in order to
+ * disable offchannel CAC/radar detection.
* @net_fill_forward_path: Called from .ndo_fill_forward_path in order to
* resolve a path for hardware flow offloading
*/
@@ -4267,6 +4275,8 @@ struct ieee80211_ops {
struct ieee80211_twt_setup *twt);
void (*twt_teardown_request)(struct ieee80211_hw *hw,
struct ieee80211_sta *sta, u8 flowid);
+ int (*set_radar_offchan)(struct ieee80211_hw *hw,
+ struct cfg80211_chan_def *chandef);
int (*net_fill_forward_path)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -4344,6 +4344,18 @@ out:
return err;
}
+static int
+ieee80211_set_radar_offchan(struct wiphy *wiphy,
+ struct cfg80211_chan_def *chandef)
+{
+ struct ieee80211_local *local = wiphy_priv(wiphy);
+
+ if (!local->ops->set_radar_offchan)
+ return -EOPNOTSUPP;
+
+ return local->ops->set_radar_offchan(&local->hw, chandef);
+}
+
const struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@@ -4448,4 +4460,5 @@ const struct cfg80211_ops mac80211_confi
.reset_tid_config = ieee80211_reset_tid_config,
.set_sar_specs = ieee80211_set_sar_specs,
.color_change = ieee80211_color_change,
+ .set_radar_offchan = ieee80211_set_radar_offchan,
};

532
package/kernel/mac80211/patches/subsys/320-cfg80211-rename-offchannel_chain-structs-to-backgrou.patch Normal file
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@ -0,0 +1,532 @@
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Mon, 29 Nov 2021 14:11:24 +0100
Subject: [PATCH] cfg80211: rename offchannel_chain structs to background_chain
to avoid confusion with ETSI standard
ETSI standard defines "Offchannel CAC" as:
"Off-Channel CAC is performed by a number of non-continuous checks
spread over a period in time. This period, which is required to
determine the presence of radar signals, is defined as the Off-Channel
CAC Time..
Minimum Off-Channel CAC Time 6 minutes and Maximum Off-Channel CAC Time
4 hours..".
mac80211 implementation refers to a dedicated hw chain used for continuous
radar monitoring. Rename offchannel_* references to background_* in
order to avoid confusion with ETSI standard.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/4204cc1d648d76b44557981713231e030a3bd991.1638190762.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -4058,14 +4058,14 @@ struct mgmt_frame_regs {
*
* @color_change: Initiate a color change.
*
- * @set_radar_offchan: Configure dedicated offchannel chain available for
+ * @set_radar_background: Configure dedicated offchannel chain available for
* radar/CAC detection on some hw. This chain can't be used to transmit
* or receive frames and it is bounded to a running wdev.
- * Offchannel radar/CAC detection allows to avoid the CAC downtime
+ * Background radar/CAC detection allows to avoid the CAC downtime
* switching to a different channel during CAC detection on the selected
* radar channel.
* The caller is expected to set chandef pointer to NULL in order to
- * disable offchannel CAC/radar detection.
+ * disable background CAC/radar detection.
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -4396,8 +4396,8 @@ struct cfg80211_ops {
int (*color_change)(struct wiphy *wiphy,
struct net_device *dev,
struct cfg80211_color_change_settings *params);
- int (*set_radar_offchan)(struct wiphy *wiphy,
- struct cfg80211_chan_def *chandef);
+ int (*set_radar_background)(struct wiphy *wiphy,
+ struct cfg80211_chan_def *chandef);
};
/*
@@ -7601,9 +7601,9 @@ cfg80211_radar_event(struct wiphy *wiphy
}
static inline void
-cfg80211_offchan_radar_event(struct wiphy *wiphy,
- struct cfg80211_chan_def *chandef,
- gfp_t gfp)
+cfg80211_background_radar_event(struct wiphy *wiphy,
+ struct cfg80211_chan_def *chandef,
+ gfp_t gfp)
{
__cfg80211_radar_event(wiphy, chandef, true, gfp);
}
@@ -7638,13 +7638,13 @@ void cfg80211_cac_event(struct net_devic
enum nl80211_radar_event event, gfp_t gfp);
/**
- * cfg80211_offchan_cac_abort - Channel Availability Check offchan abort event
+ * cfg80211_background_cac_abort - Channel Availability Check offchan abort event
* @wiphy: the wiphy
*
* This function is called by the driver when a Channel Availability Check
* (CAC) is aborted by a offchannel dedicated chain.
*/
-void cfg80211_offchan_cac_abort(struct wiphy *wiphy);
+void cfg80211_background_cac_abort(struct wiphy *wiphy);
/**
* cfg80211_gtk_rekey_notify - notify userspace about driver rekeying
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -3937,14 +3937,14 @@ struct ieee80211_prep_tx_info {
* twt structure.
* @twt_teardown_request: Update the hw with TWT teardown request received
* from the peer.
- * @set_radar_offchan: Configure dedicated offchannel chain available for
+ * @set_radar_background: Configure dedicated offchannel chain available for
* radar/CAC detection on some hw. This chain can't be used to transmit
* or receive frames and it is bounded to a running wdev.
- * Offchannel radar/CAC detection allows to avoid the CAC downtime
+ * Background radar/CAC detection allows to avoid the CAC downtime
* switching to a different channel during CAC detection on the selected
* radar channel.
* The caller is expected to set chandef pointer to NULL in order to
- * disable offchannel CAC/radar detection.
+ * disable background CAC/radar detection.
* @net_fill_forward_path: Called from .ndo_fill_forward_path in order to
* resolve a path for hardware flow offloading
*/
@@ -4275,8 +4275,8 @@ struct ieee80211_ops {
struct ieee80211_twt_setup *twt);
void (*twt_teardown_request)(struct ieee80211_hw *hw,
struct ieee80211_sta *sta, u8 flowid);
- int (*set_radar_offchan)(struct ieee80211_hw *hw,
- struct cfg80211_chan_def *chandef);
+ int (*set_radar_background)(struct ieee80211_hw *hw,
+ struct cfg80211_chan_def *chandef);
int (*net_fill_forward_path)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2608,10 +2608,10 @@ enum nl80211_commands {
* Mandatory parameter for the transmitting interface to enable MBSSID.
* Optional for the non-transmitting interfaces.
*
- * @NL80211_ATTR_RADAR_OFFCHAN: Configure dedicated offchannel chain available for
- * radar/CAC detection on some hw. This chain can't be used to transmit
- * or receive frames and it is bounded to a running wdev.
- * Offchannel radar/CAC detection allows to avoid the CAC downtime
+ * @NL80211_ATTR_RADAR_BACKGROUND: Configure dedicated offchannel chain
+ * available for radar/CAC detection on some hw. This chain can't be used
+ * to transmit or receive frames and it is bounded to a running wdev.
+ * Background radar/CAC detection allows to avoid the CAC downtime
* switching on a different channel during CAC detection on the selected
* radar channel.
*
@@ -3121,7 +3121,7 @@ enum nl80211_attrs {
NL80211_ATTR_MBSSID_CONFIG,
NL80211_ATTR_MBSSID_ELEMS,
- NL80211_ATTR_RADAR_OFFCHAN,
+ NL80211_ATTR_RADAR_BACKGROUND,
/* add attributes here, update the policy in nl80211.c */
@@ -6022,7 +6022,7 @@ enum nl80211_feature_flags {
* @NL80211_EXT_FEATURE_BSS_COLOR: The driver supports BSS color collision
* detection and change announcemnts.
*
- * @NL80211_EXT_FEATURE_RADAR_OFFCHAN: Device supports offchannel radar/CAC
+ * @NL80211_EXT_FEATURE_RADAR_BACKGROUND: Device supports background radar/CAC
* detection.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
@@ -6090,7 +6090,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_SECURE_RTT,
NL80211_EXT_FEATURE_PROT_RANGE_NEGO_AND_MEASURE,
NL80211_EXT_FEATURE_BSS_COLOR,
- NL80211_EXT_FEATURE_RADAR_OFFCHAN,
+ NL80211_EXT_FEATURE_RADAR_BACKGROUND,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -4345,15 +4345,15 @@ out:
}
static int
-ieee80211_set_radar_offchan(struct wiphy *wiphy,
- struct cfg80211_chan_def *chandef)
+ieee80211_set_radar_background(struct wiphy *wiphy,
+ struct cfg80211_chan_def *chandef)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
- if (!local->ops->set_radar_offchan)
+ if (!local->ops->set_radar_background)
return -EOPNOTSUPP;
- return local->ops->set_radar_offchan(&local->hw, chandef);
+ return local->ops->set_radar_background(&local->hw, chandef);
}
const struct cfg80211_ops mac80211_config_ops = {
@@ -4460,5 +4460,5 @@ const struct cfg80211_ops mac80211_confi
.reset_tid_config = ieee80211_reset_tid_config,
.set_sar_specs = ieee80211_set_sar_specs,
.color_change = ieee80211_color_change,
- .set_radar_offchan = ieee80211_set_radar_offchan,
+ .set_radar_background = ieee80211_set_radar_background,
};
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -716,13 +716,13 @@ static bool
cfg80211_offchan_chain_is_active(struct cfg80211_registered_device *rdev,
struct ieee80211_channel *channel)
{
- if (!rdev->offchan_radar_wdev)
+ if (!rdev->background_radar_wdev)
return false;
- if (!cfg80211_chandef_valid(&rdev->offchan_radar_chandef))
+ if (!cfg80211_chandef_valid(&rdev->background_radar_chandef))
return false;
- return cfg80211_is_sub_chan(&rdev->offchan_radar_chandef, channel);
+ return cfg80211_is_sub_chan(&rdev->background_radar_chandef, channel);
}
bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -552,9 +552,10 @@ use_default_name:
INIT_WORK(&rdev->rfkill_block, cfg80211_rfkill_block_work);
INIT_WORK(&rdev->conn_work, cfg80211_conn_work);
INIT_WORK(&rdev->event_work, cfg80211_event_work);
- INIT_WORK(&rdev->offchan_cac_abort_wk, cfg80211_offchan_cac_abort_wk);
- INIT_DELAYED_WORK(&rdev->offchan_cac_done_wk,
- cfg80211_offchan_cac_done_wk);
+ INIT_WORK(&rdev->background_cac_abort_wk,
+ cfg80211_background_cac_abort_wk);
+ INIT_DELAYED_WORK(&rdev->background_cac_done_wk,
+ cfg80211_background_cac_done_wk);
init_waitqueue_head(&rdev->dev_wait);
@@ -1064,13 +1065,13 @@ void wiphy_unregister(struct wiphy *wiph
cancel_work_sync(&rdev->conn_work);
flush_work(&rdev->event_work);
cancel_delayed_work_sync(&rdev->dfs_update_channels_wk);
- cancel_delayed_work_sync(&rdev->offchan_cac_done_wk);
+ cancel_delayed_work_sync(&rdev->background_cac_done_wk);
flush_work(&rdev->destroy_work);
flush_work(&rdev->sched_scan_stop_wk);
flush_work(&rdev->propagate_radar_detect_wk);
flush_work(&rdev->propagate_cac_done_wk);
flush_work(&rdev->mgmt_registrations_update_wk);
- flush_work(&rdev->offchan_cac_abort_wk);
+ flush_work(&rdev->background_cac_abort_wk);
#ifdef CONFIG_PM
if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup)
@@ -1219,7 +1220,7 @@ void __cfg80211_leave(struct cfg80211_re
cfg80211_pmsr_wdev_down(wdev);
- cfg80211_stop_offchan_radar_detection(wdev);
+ cfg80211_stop_background_radar_detection(wdev);
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -84,10 +84,10 @@ struct cfg80211_registered_device {
struct delayed_work dfs_update_channels_wk;
- struct wireless_dev *offchan_radar_wdev;
- struct cfg80211_chan_def offchan_radar_chandef;
- struct delayed_work offchan_cac_done_wk;
- struct work_struct offchan_cac_abort_wk;
+ struct wireless_dev *background_radar_wdev;
+ struct cfg80211_chan_def background_radar_chandef;
+ struct delayed_work background_cac_done_wk;
+ struct work_struct background_cac_abort_wk;
/* netlink port which started critical protocol (0 means not started) */
u32 crit_proto_nlportid;
@@ -497,15 +497,15 @@ cfg80211_chandef_dfs_cac_time(struct wip
void cfg80211_sched_dfs_chan_update(struct cfg80211_registered_device *rdev);
int
-cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev,
- struct wireless_dev *wdev,
- struct cfg80211_chan_def *chandef);
+cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev,
+ struct cfg80211_chan_def *chandef);
-void cfg80211_stop_offchan_radar_detection(struct wireless_dev *wdev);
+void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev);
-void cfg80211_offchan_cac_done_wk(struct work_struct *work);
+void cfg80211_background_cac_done_wk(struct work_struct *work);
-void cfg80211_offchan_cac_abort_wk(struct work_struct *work);
+void cfg80211_background_cac_abort_wk(struct work_struct *work);
bool cfg80211_any_wiphy_oper_chan(struct wiphy *wiphy,
struct ieee80211_channel *chan);
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -920,7 +920,7 @@ void __cfg80211_radar_event(struct wiphy
cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_UNAVAILABLE);
if (offchan)
- queue_work(cfg80211_wq, &rdev->offchan_cac_abort_wk);
+ queue_work(cfg80211_wq, &rdev->background_cac_abort_wk);
cfg80211_sched_dfs_chan_update(rdev);
@@ -975,10 +975,10 @@ void cfg80211_cac_event(struct net_devic
EXPORT_SYMBOL(cfg80211_cac_event);
static void
-__cfg80211_offchan_cac_event(struct cfg80211_registered_device *rdev,
- struct wireless_dev *wdev,
- const struct cfg80211_chan_def *chandef,
- enum nl80211_radar_event event)
+__cfg80211_background_cac_event(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev,
+ const struct cfg80211_chan_def *chandef,
+ enum nl80211_radar_event event)
{
struct wiphy *wiphy = &rdev->wiphy;
struct net_device *netdev;
@@ -988,7 +988,7 @@ __cfg80211_offchan_cac_event(struct cfg8
if (!cfg80211_chandef_valid(chandef))
return;
- if (!rdev->offchan_radar_wdev)
+ if (!rdev->background_radar_wdev)
return;
switch (event) {
@@ -997,12 +997,12 @@ __cfg80211_offchan_cac_event(struct cfg8
memcpy(&rdev->cac_done_chandef, chandef, sizeof(*chandef));
queue_work(cfg80211_wq, &rdev->propagate_cac_done_wk);
cfg80211_sched_dfs_chan_update(rdev);
- wdev = rdev->offchan_radar_wdev;
+ wdev = rdev->background_radar_wdev;
break;
case NL80211_RADAR_CAC_ABORTED:
- if (!cancel_delayed_work(&rdev->offchan_cac_done_wk))
+ if (!cancel_delayed_work(&rdev->background_cac_done_wk))
return;
- wdev = rdev->offchan_radar_wdev;
+ wdev = rdev->background_radar_wdev;
break;
case NL80211_RADAR_CAC_STARTED:
break;
@@ -1015,49 +1015,49 @@ __cfg80211_offchan_cac_event(struct cfg8
}
static void
-cfg80211_offchan_cac_event(struct cfg80211_registered_device *rdev,
- const struct cfg80211_chan_def *chandef,
- enum nl80211_radar_event event)
+cfg80211_background_cac_event(struct cfg80211_registered_device *rdev,
+ const struct cfg80211_chan_def *chandef,
+ enum nl80211_radar_event event)
{
wiphy_lock(&rdev->wiphy);
- __cfg80211_offchan_cac_event(rdev, rdev->offchan_radar_wdev,
- chandef, event);
+ __cfg80211_background_cac_event(rdev, rdev->background_radar_wdev,
+ chandef, event);
wiphy_unlock(&rdev->wiphy);
}
-void cfg80211_offchan_cac_done_wk(struct work_struct *work)
+void cfg80211_background_cac_done_wk(struct work_struct *work)
{
struct delayed_work *delayed_work = to_delayed_work(work);
struct cfg80211_registered_device *rdev;
rdev = container_of(delayed_work, struct cfg80211_registered_device,
- offchan_cac_done_wk);
- cfg80211_offchan_cac_event(rdev, &rdev->offchan_radar_chandef,
- NL80211_RADAR_CAC_FINISHED);
+ background_cac_done_wk);
+ cfg80211_background_cac_event(rdev, &rdev->background_radar_chandef,
+ NL80211_RADAR_CAC_FINISHED);
}
-void cfg80211_offchan_cac_abort_wk(struct work_struct *work)
+void cfg80211_background_cac_abort_wk(struct work_struct *work)
{
struct cfg80211_registered_device *rdev;
rdev = container_of(work, struct cfg80211_registered_device,
- offchan_cac_abort_wk);
- cfg80211_offchan_cac_event(rdev, &rdev->offchan_radar_chandef,
- NL80211_RADAR_CAC_ABORTED);
+ background_cac_abort_wk);
+ cfg80211_background_cac_event(rdev, &rdev->background_radar_chandef,
+ NL80211_RADAR_CAC_ABORTED);
}
-void cfg80211_offchan_cac_abort(struct wiphy *wiphy)
+void cfg80211_background_cac_abort(struct wiphy *wiphy)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
- queue_work(cfg80211_wq, &rdev->offchan_cac_abort_wk);
+ queue_work(cfg80211_wq, &rdev->background_cac_abort_wk);
}
-EXPORT_SYMBOL(cfg80211_offchan_cac_abort);
+EXPORT_SYMBOL(cfg80211_background_cac_abort);
int
-cfg80211_start_offchan_radar_detection(struct cfg80211_registered_device *rdev,
- struct wireless_dev *wdev,
- struct cfg80211_chan_def *chandef)
+cfg80211_start_background_radar_detection(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev,
+ struct cfg80211_chan_def *chandef)
{
unsigned int cac_time_ms;
int err;
@@ -1065,19 +1065,19 @@ cfg80211_start_offchan_radar_detection(s
lockdep_assert_wiphy(&rdev->wiphy);
if (!wiphy_ext_feature_isset(&rdev->wiphy,
- NL80211_EXT_FEATURE_RADAR_OFFCHAN))
+ NL80211_EXT_FEATURE_RADAR_BACKGROUND))
return -EOPNOTSUPP;
/* Offchannel chain already locked by another wdev */
- if (rdev->offchan_radar_wdev && rdev->offchan_radar_wdev != wdev)
+ if (rdev->background_radar_wdev && rdev->background_radar_wdev != wdev)
return -EBUSY;
/* CAC already in progress on the offchannel chain */
- if (rdev->offchan_radar_wdev == wdev &&
- delayed_work_pending(&rdev->offchan_cac_done_wk))
+ if (rdev->background_radar_wdev == wdev &&
+ delayed_work_pending(&rdev->background_cac_done_wk))
return -EBUSY;
- err = rdev_set_radar_offchan(rdev, chandef);
+ err = rdev_set_radar_background(rdev, chandef);
if (err)
return err;
@@ -1085,30 +1085,31 @@ cfg80211_start_offchan_radar_detection(s
if (!cac_time_ms)
cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
- rdev->offchan_radar_chandef = *chandef;
- rdev->offchan_radar_wdev = wdev; /* Get offchain ownership */
+ rdev->background_radar_chandef = *chandef;
+ rdev->background_radar_wdev = wdev; /* Get offchain ownership */
- __cfg80211_offchan_cac_event(rdev, wdev, chandef,
- NL80211_RADAR_CAC_STARTED);
- queue_delayed_work(cfg80211_wq, &rdev->offchan_cac_done_wk,
+ __cfg80211_background_cac_event(rdev, wdev, chandef,
+ NL80211_RADAR_CAC_STARTED);
+ queue_delayed_work(cfg80211_wq, &rdev->background_cac_done_wk,
msecs_to_jiffies(cac_time_ms));
return 0;
}
-void cfg80211_stop_offchan_radar_detection(struct wireless_dev *wdev)
+void cfg80211_stop_background_radar_detection(struct wireless_dev *wdev)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
lockdep_assert_wiphy(wiphy);
- if (wdev != rdev->offchan_radar_wdev)
+ if (wdev != rdev->background_radar_wdev)
return;
- rdev_set_radar_offchan(rdev, NULL);
- rdev->offchan_radar_wdev = NULL; /* Release offchain ownership */
+ rdev_set_radar_background(rdev, NULL);
+ rdev->background_radar_wdev = NULL; /* Release offchain ownership */
- __cfg80211_offchan_cac_event(rdev, wdev, &rdev->offchan_radar_chandef,
- NL80211_RADAR_CAC_ABORTED);
+ __cfg80211_background_cac_event(rdev, wdev,
+ &rdev->background_radar_chandef,
+ NL80211_RADAR_CAC_ABORTED);
}
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -793,7 +793,7 @@ static const struct nla_policy nl80211_p
[NL80211_ATTR_MBSSID_CONFIG] =
NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
[NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
- [NL80211_ATTR_RADAR_OFFCHAN] = { .type = NLA_FLAG },
+ [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
};
/* policy for the key attributes */
@@ -9288,9 +9288,9 @@ static int nl80211_start_radar_detection
goto unlock;
}
- if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_OFFCHAN])) {
- err = cfg80211_start_offchan_radar_detection(rdev, wdev,
- &chandef);
+ if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
+ err = cfg80211_start_background_radar_detection(rdev, wdev,
+ &chandef);
goto unlock;
}
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -1382,17 +1382,17 @@ static inline int rdev_color_change(stru
}
static inline int
-rdev_set_radar_offchan(struct cfg80211_registered_device *rdev,
- struct cfg80211_chan_def *chandef)
+rdev_set_radar_background(struct cfg80211_registered_device *rdev,
+ struct cfg80211_chan_def *chandef)
{
struct wiphy *wiphy = &rdev->wiphy;
int ret;
- if (!rdev->ops->set_radar_offchan)
+ if (!rdev->ops->set_radar_background)
return -EOPNOTSUPP;
- trace_rdev_set_radar_offchan(wiphy, chandef);
- ret = rdev->ops->set_radar_offchan(wiphy, chandef);
+ trace_rdev_set_radar_background(wiphy, chandef);
+ ret = rdev->ops->set_radar_background(wiphy, chandef);
trace_rdev_return_int(wiphy, ret);
return ret;
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -3646,7 +3646,7 @@ TRACE_EVENT(cfg80211_bss_color_notify,
__entry->color_bitmap)
);
-TRACE_EVENT(rdev_set_radar_offchan,
+TRACE_EVENT(rdev_set_radar_background,
TP_PROTO(struct wiphy *wiphy, struct cfg80211_chan_def *chandef),
TP_ARGS(wiphy, chandef),

2
package/kernel/mac80211/patches/subsys/400-allow-ibss-mixed.patch
View File

@ -5,7 +5,7 @@ and we should ignore this.
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -630,21 +630,6 @@ static int wiphy_verify_combinations(str
@@ -634,21 +634,6 @@ static int wiphy_verify_combinations(str
c->limits[j].max > 1))
return -EINVAL;

22
package/kernel/mac80211/patches/subsys/500-mac80211_configure_antenna_gain.patch
View File

@ -8,7 +8,7 @@
*
* @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting
* functions to adjust rfkill hw state
@@ -4193,6 +4194,7 @@ struct cfg80211_ops {
@@ -4202,6 +4203,7 @@ struct cfg80211_ops {
enum nl80211_tx_power_setting type, int mbm);
int (*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev,
int *dbm);
@ -36,9 +36,9 @@
u8 ps_dtim_period;
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2608,6 +2608,9 @@ enum nl80211_commands {
* Mandatory parameter for the transmitting interface to enable MBSSID.
* Optional for the non-transmitting interfaces.
@@ -2615,6 +2615,9 @@ enum nl80211_commands {
* switching on a different channel during CAC detection on the selected
* radar channel.
*
+ * @NL80211_ATTR_WIPHY_ANTENNA_GAIN: Configured antenna gain. Used to reduce
+ * transmit power to stay within regulatory limits. u32, dBi.
@ -46,9 +46,9 @@
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -3114,6 +3117,8 @@ enum nl80211_attrs {
NL80211_ATTR_MBSSID_CONFIG,
NL80211_ATTR_MBSSID_ELEMS,
@@ -3123,6 +3126,8 @@ enum nl80211_attrs {
NL80211_ATTR_RADAR_BACKGROUND,
+ NL80211_ATTR_WIPHY_ANTENNA_GAIN,
+
@ -77,7 +77,7 @@
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
@@ -4399,6 +4412,7 @@ const struct cfg80211_ops mac80211_confi
@@ -4411,6 +4424,7 @@ const struct cfg80211_ops mac80211_confi
.set_wiphy_params = ieee80211_set_wiphy_params,
.set_tx_power = ieee80211_set_tx_power,
.get_tx_power = ieee80211_get_tx_power,
@ -129,15 +129,15 @@
local->hw.max_mtu = IEEE80211_MAX_DATA_LEN;
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -793,6 +793,7 @@ static const struct nla_policy nl80211_p
[NL80211_ATTR_MBSSID_CONFIG] =
@@ -794,6 +794,7 @@ static const struct nla_policy nl80211_p
NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
[NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
[NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
+ [NL80211_ATTR_WIPHY_ANTENNA_GAIN] = { .type = NLA_U32 },
};
/* policy for the key attributes */
@@ -3374,6 +3375,22 @@ static int nl80211_set_wiphy(struct sk_b
@@ -3375,6 +3376,22 @@ static int nl80211_set_wiphy(struct sk_b
goto out;
}