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wifi: rtw89: chan: refine MCC re-plan flow when unassign chanctx

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Originally during unassign-chanctx, MCC (multi-channel concurrency) is
re-planed before set-channel if need. But, we might calculate MCC stuffs
based on old channel info. And, the following set-channel might be racing
with FW MCC state mechanism. So, we refine this flow. Now, if MCC re-plan
is needed here, it will be done after set-channel.

Besides, to be more rigorous, we now ensure entity isn't paused before we
deal with MCC things here.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20240727080650.12195-2-pkshih@realtek.com
This commit is contained in:
Zong-Zhe Yang 2024-07-27 16:06:44 +08:00 committed by Ping-Ke Shih
parent 0e735a4c61
commit 62c5a91b25
1 changed files with 25 additions and 12 deletions
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37
drivers/net/wireless/realtek/rtw89/chan.c
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@ -2443,9 +2443,10 @@ void rtw89_chanctx_ops_unassign_vif(struct rtw89_dev *rtwdev,
{
struct rtw89_chanctx_cfg *cfg = (struct rtw89_chanctx_cfg *)ctx->drv_priv;
struct rtw89_hal *hal = &rtwdev->hal;
struct rtw89_entity_weight w = {};
enum rtw89_sub_entity_idx roll;
enum rtw89_entity_mode cur;
enum rtw89_entity_mode new;
int ret;
rtwvif->sub_entity_idx = RTW89_SUB_ENTITY_0;
rtwvif->chanctx_assigned = false;
@ -2469,21 +2470,33 @@ void rtw89_chanctx_ops_unassign_vif(struct rtw89_dev *rtwdev,
rtw89_swap_sub_entity(rtwdev, cfg->idx, roll);
out:
rtw89_entity_calculate_weight(rtwdev, &w);
if (!hal->entity_pause) {
cur = rtw89_get_entity_mode(rtwdev);
switch (cur) {
case RTW89_ENTITY_MODE_MCC:
rtw89_mcc_stop(rtwdev);
break;
default:
break;
}
}
cur = rtw89_get_entity_mode(rtwdev);
switch (cur) {
ret = rtw89_set_channel(rtwdev);
if (ret)
return;
if (hal->entity_pause)
return;
new = rtw89_get_entity_mode(rtwdev);
switch (new) {
case RTW89_ENTITY_MODE_MCC:
/* If still multi-roles, re-plan MCC for chanctx changes.
* Otherwise, just stop MCC.
*/
rtw89_mcc_stop(rtwdev);
if (w.active_roles == NUM_OF_RTW89_MCC_ROLES)
rtw89_mcc_start(rtwdev);
/* re-plan MCC for chanctx changes. */
ret = rtw89_mcc_start(rtwdev);
if (ret)
rtw89_warn(rtwdev, "failed to start MCC: %d\n", ret);
break;
default:
break;
}
rtw89_set_channel(rtwdev);
}