| From 2ea36366ea036e3063ff553a2939c9cac17c6ac8 Mon Sep 17 00:00:00 2001 |
| From: StanleyYP Wang <StanleyYP.Wang@mediatek.com> |
| Date: Tue, 8 Aug 2023 19:21:41 +0800 |
| Subject: [PATCH] hostapd: mtk: add back ht vht cap missing field before dfs |
| channel fallback |
| |
| hostapd_event_ch_switch would set / clear ht_capab and vht_capab, based |
| on the bandwidth of switched channel. |
| For example, vht bw 160 support field would be cleared if we switch to |
| non bw 160 channel. |
| This design works fine with NON-DFS channel switch. |
| However, for those DFS channels who require CAC, channel switch command |
| calls hostapd_switch_channel_fallback instead of hostapd_switch_channel. |
| This is simply restarting the interface not CHANNEL SWITCHING, so |
| hostapd will not receive any ch_switch event from kernel. |
| Therefore, the cleared field in vht_capab will not be set back to 1, |
| even if we channel switch to dfs channel bw 160. |
| |
| Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> |
| --- |
| src/ap/hostapd.c | 7 +++++++ |
| 1 file changed, 7 insertions(+) |
| |
| diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c |
| index c2e0b13..4b7ebc5 100644 |
| --- a/src/ap/hostapd.c |
| +++ b/src/ap/hostapd.c |
| @@ -4161,6 +4161,13 @@ hostapd_switch_channel_fallback(struct hostapd_iface *iface, |
| break; |
| } |
| |
| + if ((iface->current_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) && |
| + freq_params->bandwidth > 20) |
| + iface->conf->ht_capab |= HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET; |
| + if ((iface->current_mode->vht_capab & VHT_CAP_SUPP_CHAN_WIDTH_160MHZ) && |
| + freq_params->bandwidth == 160) |
| + iface->conf->vht_capab |= VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; |
| + |
| iface->freq = freq_params->freq; |
| iface->conf->channel = freq_params->channel; |
| iface->conf->secondary_channel = freq_params->sec_channel_offset; |
| -- |
| 2.18.0 |
| |