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Re: [PATCH v3 6/7] wifi: mt76: mt7921: introduce remain_on_channel support

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On 10.11.22 22:23, sean.wang@xxxxxxxxxxxx wrote:
From: Sean Wang <sean.wang@xxxxxxxxxxxx>

Introduce remain_on_channel support. Additionally, we add
mt7921_check_offload_capability to disable .remain_on_channel and
.cancel_remain_on_channel and related configuration because those
operations would rely on the fundamental MCU commands that will be only
supported with newer firmware.

Co-developed-by: Deren Wu <deren.wu@xxxxxxxxxxxx>
Signed-off-by: Deren Wu <deren.wu@xxxxxxxxxxxx>
Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
---
  .../net/wireless/mediatek/mt76/mt7921/init.c  |  63 +++++++
  .../net/wireless/mediatek/mt76/mt7921/main.c  | 165 ++++++++++++++++++
  .../net/wireless/mediatek/mt76/mt7921/mcu.c   |  24 +++
  .../wireless/mediatek/mt76/mt7921/mt7921.h    |  49 ++++++
  .../net/wireless/mediatek/mt76/mt7921/pci.c   |  26 ++-
  .../net/wireless/mediatek/mt76/mt7921/sdio.c  |  17 +-
  .../net/wireless/mediatek/mt76/mt7921/usb.c   |  16 +-
  7 files changed, 346 insertions(+), 14 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index 82df5fa4fbc7..82837ccc104d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -1573,6 +1683,61 @@ mt7921_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
  	mt7921_mutex_release(dev);
  }
+const struct ieee80211_ops mt7921_ops_chanctx = {
+	.tx = mt7921_tx,
+	.start = mt7921_start,
+	.stop = mt7921_stop,
+	.add_interface = mt7921_add_interface,
+	.remove_interface = mt7921_remove_interface,
+	.config = mt7921_config,
+	.conf_tx = mt7921_conf_tx,
+	.configure_filter = mt7921_configure_filter,
+	.bss_info_changed = mt7921_bss_info_changed,
+	.start_ap = mt7921_start_ap,
+	.stop_ap = mt7921_stop_ap,
+	.sta_state = mt7921_sta_state,
+	.sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
+	.set_key = mt7921_set_key,
+	.sta_set_decap_offload = mt7921_sta_set_decap_offload,
+#if IS_ENABLED(CONFIG_IPV6)
+	.ipv6_addr_change = mt7921_ipv6_addr_change,
+#endif /* CONFIG_IPV6 */
+	.ampdu_action = mt7921_ampdu_action,
+	.set_rts_threshold = mt7921_set_rts_threshold,
+	.wake_tx_queue = mt76_wake_tx_queue,
+	.release_buffered_frames = mt76_release_buffered_frames,
+	.channel_switch_beacon = mt7921_channel_switch_beacon,
+	.get_txpower = mt76_get_txpower,
+	.get_stats = mt7921_get_stats,
+	.get_et_sset_count = mt7921_get_et_sset_count,
+	.get_et_strings = mt7921_get_et_strings,
+	.get_et_stats = mt7921_get_et_stats,
+	.get_tsf = mt7921_get_tsf,
+	.set_tsf = mt7921_set_tsf,
+	.get_survey = mt76_get_survey,
+	.get_antenna = mt76_get_antenna,
+	.set_antenna = mt7921_set_antenna,
+	.set_coverage_class = mt7921_set_coverage_class,
+	.hw_scan = mt7921_hw_scan,
+	.cancel_hw_scan = mt7921_cancel_hw_scan,
+	.sta_statistics = mt7921_sta_statistics,
+	.sched_scan_start = mt7921_start_sched_scan,
+	.sched_scan_stop = mt7921_stop_sched_scan,
+	CFG80211_TESTMODE_CMD(mt7921_testmode_cmd)
+	CFG80211_TESTMODE_DUMP(mt7921_testmode_dump)
+#ifdef CONFIG_PM
+	.suspend = mt7921_suspend,
+	.resume = mt7921_resume,
+	.set_wakeup = mt7921_set_wakeup,
+	.set_rekey_data = mt7921_set_rekey_data,
+#endif /* CONFIG_PM */
+	.flush = mt7921_flush,
+	.set_sar_specs = mt7921_set_sar_specs,
+	.remain_on_channel = mt7921_remain_on_channel,
+	.cancel_remain_on_channel = mt7921_cancel_remain_on_channel,
+};
+EXPORT_SYMBOL_GPL(mt7921_ops_chanctx);
+
  const struct ieee80211_ops mt7921_ops = {
  	.tx = mt7921_tx,
  	.start = mt7921_start,
Please avoid creating a copy&paste ops struct, since that adds extra maintenance overhead. For some devices we already use devm_kmemdup to duplicate and modify ops. Please use the same for chanctx. You could add a common function that fills in the remain_on_channel/chanctx part into the duplicated ops.

- Felix



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