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wifi: rtw89: don't re-randomize TSF of AP/GO

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When APs or GOs are up, their TSF start point are randomized to avoid
collisions. However, the TSF of an existing AP/GO would be randomized
multiple times. It caused the TSF is discontinuous to the corresponding
STA/GC sides. So, once TSF has been randomized, don't re-randomize it
unless SER (system error recovery) happens unfortunately.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20250422014620.18421-7-pkshih@realtek.com
This commit is contained in:
Zong-Zhe Yang 2025-04-22 09:46:14 +08:00 committed by Ping-Ke Shih
parent 98019abbf9
commit 13bd2b36f2
4 changed files with 11 additions and 0 deletions
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1
drivers/net/wireless/realtek/rtw89/core.h
View File

@ -3507,6 +3507,7 @@ struct rtw89_vif_link {
u8 hit_rule;
u8 last_noa_nr;
u64 sync_bcn_tsf;
bool rand_tsf_done;
bool trigger;
bool lsig_txop;
u8 tgt_ind;

8
drivers/net/wireless/realtek/rtw89/mac.c
View File

@ -4631,11 +4631,17 @@ static void rtw89_mac_port_tsf_sync_rand(struct rtw89_dev *rtwdev,
if (rtwvif_link->net_type != RTW89_NET_TYPE_AP_MODE || rtwvif_link == rtwvif_src)
return;
if (rtwvif_link->rand_tsf_done)
goto out;
/* adjust offset randomly to avoid beacon conflict */
offset = offset - offset / 4 + get_random_u32() % (offset / 2);
rtw89_mac_port_tsf_sync(rtwdev, rtwvif_link, rtwvif_src,
(*n_offset) * offset);
rtwvif_link->rand_tsf_done = true;
out:
(*n_offset)++;
}
@ -4866,6 +4872,8 @@ void rtw89_mac_set_he_tb(struct rtw89_dev *rtwdev,
void rtw89_mac_stop_ap(struct rtw89_dev *rtwdev, struct rtw89_vif_link *rtwvif_link)
{
rtw89_mac_port_cfg_func_sw(rtwdev, rtwvif_link);
rtwvif_link->rand_tsf_done = false;
}
int rtw89_mac_add_vif(struct rtw89_dev *rtwdev, struct rtw89_vif_link *rtwvif_link)

1
drivers/net/wireless/realtek/rtw89/mac80211.c
View File

@ -119,6 +119,7 @@ static int __rtw89_ops_add_iface_link(struct rtw89_dev *rtwdev,
rtwvif_link->chanctx_assigned = false;
rtwvif_link->chanctx_idx = RTW89_CHANCTX_0;
rtwvif_link->reg_6ghz_power = RTW89_REG_6GHZ_POWER_DFLT;
rtwvif_link->rand_tsf_done = false;
rcu_read_lock();

1
drivers/net/wireless/realtek/rtw89/ser.c
View File

@ -309,6 +309,7 @@ static void ser_reset_vif(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif)
rtw89_core_release_bit_map(rtwdev->hw_port, rtwvif_link->port);
rtwvif_link->net_type = RTW89_NET_TYPE_NO_LINK;
rtwvif_link->trigger = false;
rtwvif_link->rand_tsf_done = false;
}
}