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wifi: rtw89: improve scan time on 6 GHz band

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Reduce scan time for all supported channels from 4.4s to 3.5s.

If NL80211_SCAN_FLAG_COLOCATED_6GHZ is set in scan request, only scan PSC
channels and the channels from the RNR element found on the 2.4/5 GHz
channels. When firmware support parsing RNR element from received beacon
or probe response, offload the decision about non-PSC channels to firmware.
Driver do not need to fill non-PSC channels to scan list. If
NL80211_SCAN_FLAG_COLOCATED_6GHZ is not set, scan all supported channels.

Signed-off-by: Jui-Peng Tsai <emma_tsai@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20251021133402.15467-9-pkshih@realtek.com
This commit is contained in:
Jui-Peng Tsai
2025-10-21 21:34:02 +08:00
committed by Ping-Ke Shih
parent e139b1c1f0
commit a62b654125
1 changed files with 8 additions and 0 deletions
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8
drivers/net/wireless/realtek/rtw89/fw.c
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@@ -7787,15 +7787,23 @@ int rtw89_hw_scan_prep_chan_list_be(struct rtw89_dev *rtwdev,
struct ieee80211_channel *channel;
struct list_head chan_list;
enum rtw89_chan_type type;
bool chan_by_rnr;
bool random_seq;
int ret;
u32 idx;
random_seq = !!(req->flags & NL80211_SCAN_FLAG_RANDOM_SN);
chan_by_rnr = rtwdev->chip->support_rnr &&
(req->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ);
INIT_LIST_HEAD(&chan_list);
for (idx = 0; idx < req->n_channels; idx++) {
channel = req->channels[idx];
if (channel->band == NL80211_BAND_6GHZ &&
!cfg80211_channel_is_psc(channel) && chan_by_rnr)
continue;
ch_info = kzalloc(sizeof(*ch_info), GFP_KERNEL);
if (!ch_info) {
ret = -ENOMEM;