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Diffstat (limited to 'package/kernel/mac80211/patches/subsys/314-v5.17-cfg80211-implement-APIs-for-dedicated-radar-detectio.patch')
-rw-r--r--package/kernel/mac80211/patches/subsys/314-v5.17-cfg80211-implement-APIs-for-dedicated-radar-detectio.patch378
1 files changed, 0 insertions, 378 deletions
diff --git a/package/kernel/mac80211/patches/subsys/314-v5.17-cfg80211-implement-APIs-for-dedicated-radar-detectio.patch b/package/kernel/mac80211/patches/subsys/314-v5.17-cfg80211-implement-APIs-for-dedicated-radar-detectio.patch
deleted file mode 100644
index 2038ee69db..0000000000
--- a/package/kernel/mac80211/patches/subsys/314-v5.17-cfg80211-implement-APIs-for-dedicated-radar-detectio.patch
+++ /dev/null
@@ -1,378 +0,0 @@
-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
-@@ -543,6 +543,7 @@ 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);
-
-@@ -1205,6 +1206,8 @@ 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
-@@ -801,6 +801,7 @@ 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 */
-@@ -9287,12 +9288,6 @@ 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;
-@@ -9303,6 +9298,16 @@ 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
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-08 18:09:06 +0000