| developer | 1a17367 | 2023-12-21 14:49:33 +0800 | [diff] [blame^] | 1 | From a56c6b0ea29d278bd7ec67e45c298eac8526a055 Mon Sep 17 00:00:00 2001 |
| 2 | From: "fancy.liu" <fancy.liu@mediatek.com> |
| 3 | Date: Wed, 1 Nov 2023 19:58:05 +0800 |
| 4 | Subject: [PATCH 44/54] mtk: hostapd: Fix chan_switch to usable DFS channel |
| 5 | fail due to ACS |
| 6 | |
| 7 | Step and issue: |
| 8 | 1. Enable ACS in hostapd config; |
| 9 | 2. Bootup and then use hostapd_cli cmd switch channel to a DFS channel; |
| 10 | 3. Will do ACS again, and no work on channel specified in step 2. |
| 11 | |
| 12 | Root cause: |
| 13 | When need do DFS-CAC, hostapd will do intf disable, then set the new |
| 14 | channel into running config settings, and finally enable intf; |
| 15 | In the test case, new DFS channel is set to runnint config settings, but |
| 16 | another param "acs" is still 1 (enable), caused the ACS running when |
| 17 | intf enabled. |
| 18 | |
| 19 | Solution: |
| 20 | In the hostapd_switch_channel_fallback, need to disable acs if channel |
| 21 | is valid. |
| 22 | |
| 23 | Signed-off-by: fancy.liu <fancy.liu@mediatek.com> |
| 24 | --- |
| 25 | src/ap/hostapd.c | 3 +++ |
| 26 | 1 file changed, 3 insertions(+) |
| 27 | |
| 28 | diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c |
| 29 | index 2b563a572..f01f607f3 100644 |
| 30 | --- a/src/ap/hostapd.c |
| 31 | +++ b/src/ap/hostapd.c |
| 32 | @@ -4121,6 +4121,9 @@ hostapd_switch_channel_fallback(struct hostapd_iface *iface, |
| 33 | |
| 34 | iface->freq = freq_params->freq; |
| 35 | iface->conf->channel = freq_params->channel; |
| 36 | + if (iface->conf->channel != 0) /* If channel not zero, will disable acs. */ |
| 37 | + iface->conf->acs = 0; |
| 38 | + |
| 39 | iface->conf->secondary_channel = freq_params->sec_channel_offset; |
| 40 | hostapd_set_oper_centr_freq_seg0_idx(iface->conf, seg0_idx); |
| 41 | hostapd_set_oper_centr_freq_seg1_idx(iface->conf, seg1_idx); |
| 42 | -- |
| 43 | 2.18.0 |
| 44 | |