2022-01-28 13:32:21 +00:00
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From: Lorenzo Bianconi <lorenzo@kernel.org>
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Date: Sat, 23 Oct 2021 11:10:51 +0200
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Subject: [PATCH] mac80211: introduce set_radar_offchan callback
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Similar to cfg80211, introduce set_radar_offchan callback in mac80211_ops
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in order to configure a dedicated offchannel chain available on some hw
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(e.g. mt7915) to perform offchannel CAC detection and avoid tx/rx downtime.
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Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
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Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
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Link: https://lore.kernel.org/r/201110606d4f3a7dfdf31440e351f2e2c375d4f0.1634979655.git.lorenzo@kernel.org
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Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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---
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--- a/include/net/mac80211.h
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+++ b/include/net/mac80211.h
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@@ -3937,6 +3937,14 @@ struct ieee80211_prep_tx_info {
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* twt structure.
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* @twt_teardown_request: Update the hw with TWT teardown request received
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* from the peer.
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+ * @set_radar_offchan: Configure dedicated offchannel chain available for
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+ * radar/CAC detection on some hw. This chain can't be used to transmit
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+ * or receive frames and it is bounded to a running wdev.
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+ * Offchannel radar/CAC detection allows to avoid the CAC downtime
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+ * switching to a different channel during CAC detection on the selected
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+ * radar channel.
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+ * The caller is expected to set chandef pointer to NULL in order to
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+ * disable offchannel CAC/radar detection.
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* @net_fill_forward_path: Called from .ndo_fill_forward_path in order to
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* resolve a path for hardware flow offloading
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*/
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@@ -4267,6 +4275,8 @@ struct ieee80211_ops {
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struct ieee80211_twt_setup *twt);
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void (*twt_teardown_request)(struct ieee80211_hw *hw,
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struct ieee80211_sta *sta, u8 flowid);
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+ int (*set_radar_offchan)(struct ieee80211_hw *hw,
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+ struct cfg80211_chan_def *chandef);
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2022-02-25 07:11:36 +00:00
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#if LINUX_VERSION_IS_GEQ(5,10,0)
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2022-01-28 13:32:21 +00:00
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int (*net_fill_forward_path)(struct ieee80211_hw *hw,
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struct ieee80211_vif *vif,
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--- a/net/mac80211/cfg.c
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+++ b/net/mac80211/cfg.c
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@@ -4344,6 +4344,18 @@ out:
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return err;
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}
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+static int
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+ieee80211_set_radar_offchan(struct wiphy *wiphy,
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+ struct cfg80211_chan_def *chandef)
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+{
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+ struct ieee80211_local *local = wiphy_priv(wiphy);
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+
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+ if (!local->ops->set_radar_offchan)
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+ return -EOPNOTSUPP;
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+
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+ return local->ops->set_radar_offchan(&local->hw, chandef);
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+}
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+
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const struct cfg80211_ops mac80211_config_ops = {
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.add_virtual_intf = ieee80211_add_iface,
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.del_virtual_intf = ieee80211_del_iface,
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@@ -4448,4 +4460,5 @@ const struct cfg80211_ops mac80211_confi
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.reset_tid_config = ieee80211_reset_tid_config,
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.set_sar_specs = ieee80211_set_sar_specs,
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.color_change = ieee80211_color_change,
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+ .set_radar_offchan = ieee80211_set_radar_offchan,
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};
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