From 1543e317f1da31b75942316931e8f491a8920811 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 04 Jan 2024 10:08:02 +0000
Subject: [PATCH] disable FB
---
kernel/drivers/net/wireless/ath/ath9k/dynack.c | 121 +++++++++++++++++++++++++---------------
1 files changed, 76 insertions(+), 45 deletions(-)
diff --git a/kernel/drivers/net/wireless/ath/ath9k/dynack.c b/kernel/drivers/net/wireless/ath/ath9k/dynack.c
index 71b4888..fbeb4a7 100644
--- a/kernel/drivers/net/wireless/ath/ath9k/dynack.c
+++ b/kernel/drivers/net/wireless/ath/ath9k/dynack.c
@@ -20,10 +20,29 @@
#define COMPUTE_TO (5 * HZ)
#define LATEACK_DELAY (10 * HZ)
-#define LATEACK_TO 256
-#define MAX_DELAY 300
#define EWMA_LEVEL 96
#define EWMA_DIV 128
+
+/**
+ * ath_dynack_get_max_to - set max timeout according to channel width
+ * @ah: ath hw
+ *
+ */
+static u32 ath_dynack_get_max_to(struct ath_hw *ah)
+{
+ const struct ath9k_channel *chan = ah->curchan;
+
+ if (!chan)
+ return 300;
+
+ if (IS_CHAN_HT40(chan))
+ return 300;
+ if (IS_CHAN_HALF_RATE(chan))
+ return 750;
+ if (IS_CHAN_QUARTER_RATE(chan))
+ return 1500;
+ return 600;
+}
/**
* ath_dynack_ewma - EWMA (Exponentially Weighted Moving Average) calculation
@@ -79,6 +98,24 @@
}
/**
+ * ath_dynack_set_timeout - configure timeouts/slottime registers
+ * @ah: ath hw
+ * @to: timeout value
+ *
+ */
+static void ath_dynack_set_timeout(struct ath_hw *ah, int to)
+{
+ struct ath_common *common = ath9k_hw_common(ah);
+ int slottime = (to - 3) / 2;
+
+ ath_dbg(common, DYNACK, "ACK timeout %u slottime %u\n",
+ to, slottime);
+ ath9k_hw_setslottime(ah, slottime);
+ ath9k_hw_set_ack_timeout(ah, to);
+ ath9k_hw_set_cts_timeout(ah, to);
+}
+
+/**
* ath_dynack_compute_ackto - compute ACK timeout as the maximum STA timeout
* @ah: ath hw
*
@@ -86,7 +123,6 @@
*/
static void ath_dynack_compute_ackto(struct ath_hw *ah)
{
- struct ath_common *common = ath9k_hw_common(ah);
struct ath_dynack *da = &ah->dynack;
struct ath_node *an;
int to = 0;
@@ -96,15 +132,8 @@
to = an->ackto;
if (to && da->ackto != to) {
- u32 slottime;
-
- slottime = (to - 3) / 2;
+ ath_dynack_set_timeout(ah, to);
da->ackto = to;
- ath_dbg(common, DYNACK, "ACK timeout %u slottime %u\n",
- da->ackto, slottime);
- ath9k_hw_setslottime(ah, slottime);
- ath9k_hw_set_ack_timeout(ah, da->ackto);
- ath9k_hw_set_cts_timeout(ah, da->ackto);
}
}
@@ -116,15 +145,16 @@
*/
static void ath_dynack_compute_to(struct ath_hw *ah)
{
- u32 ackto, ack_ts;
- u8 *dst, *src;
- struct ieee80211_sta *sta;
- struct ath_node *an;
- struct ts_info *st_ts;
struct ath_dynack *da = &ah->dynack;
+ u32 ackto, ack_ts, max_to;
+ struct ieee80211_sta *sta;
+ struct ts_info *st_ts;
+ struct ath_node *an;
+ u8 *dst, *src;
rcu_read_lock();
+ max_to = ath_dynack_get_max_to(ah);
while (da->st_rbf.h_rb != da->st_rbf.t_rb &&
da->ack_rbf.h_rb != da->ack_rbf.t_rb) {
ack_ts = da->ack_rbf.tstamp[da->ack_rbf.h_rb];
@@ -140,7 +170,7 @@
if (ack_ts > st_ts->tstamp + st_ts->dur) {
ackto = ack_ts - st_ts->tstamp - st_ts->dur;
- if (ackto < MAX_DELAY) {
+ if (ackto < max_to) {
sta = ieee80211_find_sta_by_ifaddr(ah->hw, dst,
src);
if (sta) {
@@ -178,11 +208,12 @@
struct ath_tx_status *ts,
struct ieee80211_sta *sta)
{
- u8 ridx;
struct ieee80211_hdr *hdr;
struct ath_dynack *da = &ah->dynack;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ u32 dur = ts->duration;
+ u8 ridx;
if (!da->enabled || (info->flags & IEEE80211_TX_CTL_NO_ACK))
return;
@@ -196,11 +227,10 @@
if (ieee80211_is_assoc_req(hdr->frame_control) ||
ieee80211_is_assoc_resp(hdr->frame_control) ||
ieee80211_is_auth(hdr->frame_control)) {
- ath_dbg(common, DYNACK, "late ack\n");
+ u32 max_to = ath_dynack_get_max_to(ah);
- ath9k_hw_setslottime(ah, (LATEACK_TO - 3) / 2);
- ath9k_hw_set_ack_timeout(ah, LATEACK_TO);
- ath9k_hw_set_cts_timeout(ah, LATEACK_TO);
+ ath_dbg(common, DYNACK, "late ack\n");
+ ath_dynack_set_timeout(ah, max_to);
if (sta) {
struct ath_node *an;
@@ -217,14 +247,13 @@
ridx = ts->ts_rateindex;
da->st_rbf.ts[da->st_rbf.t_rb].tstamp = ts->ts_tstamp;
- da->st_rbf.ts[da->st_rbf.t_rb].dur = ts->duration;
ether_addr_copy(da->st_rbf.addr[da->st_rbf.t_rb].h_dest, hdr->addr1);
ether_addr_copy(da->st_rbf.addr[da->st_rbf.t_rb].h_src, hdr->addr2);
if (!(info->status.rates[ridx].flags & IEEE80211_TX_RC_MCS)) {
- u32 phy, sifs;
const struct ieee80211_rate *rate;
struct ieee80211_tx_rate *rates = info->status.rates;
+ u32 phy;
rate = &common->sbands[info->band].bitrates[rates[ridx].idx];
if (info->band == NL80211_BAND_2GHZ &&
@@ -233,18 +262,17 @@
else
phy = WLAN_RC_PHY_OFDM;
- sifs = ath_dynack_get_sifs(ah, phy);
- da->st_rbf.ts[da->st_rbf.t_rb].dur -= sifs;
+ dur -= ath_dynack_get_sifs(ah, phy);
}
-
- ath_dbg(common, DYNACK, "{%pM} tx sample %u [dur %u][h %u-t %u]\n",
- hdr->addr1, da->st_rbf.ts[da->st_rbf.t_rb].tstamp,
- da->st_rbf.ts[da->st_rbf.t_rb].dur, da->st_rbf.h_rb,
- (da->st_rbf.t_rb + 1) % ATH_DYN_BUF);
+ da->st_rbf.ts[da->st_rbf.t_rb].dur = dur;
INCR(da->st_rbf.t_rb, ATH_DYN_BUF);
if (da->st_rbf.t_rb == da->st_rbf.h_rb)
INCR(da->st_rbf.h_rb, ATH_DYN_BUF);
+
+ ath_dbg(common, DYNACK, "{%pM} tx sample %u [dur %u][h %u-t %u]\n",
+ hdr->addr1, ts->ts_tstamp, dur, da->st_rbf.h_rb,
+ da->st_rbf.t_rb);
ath_dynack_compute_to(ah);
@@ -272,13 +300,12 @@
spin_lock_bh(&da->qlock);
da->ack_rbf.tstamp[da->ack_rbf.t_rb] = ts;
- ath_dbg(common, DYNACK, "rx sample %u [h %u-t %u]\n",
- da->ack_rbf.tstamp[da->ack_rbf.t_rb],
- da->ack_rbf.h_rb, (da->ack_rbf.t_rb + 1) % ATH_DYN_BUF);
-
INCR(da->ack_rbf.t_rb, ATH_DYN_BUF);
if (da->ack_rbf.t_rb == da->ack_rbf.h_rb)
INCR(da->ack_rbf.h_rb, ATH_DYN_BUF);
+
+ ath_dbg(common, DYNACK, "rx sample %u [h %u-t %u]\n",
+ ts, da->ack_rbf.h_rb, da->ack_rbf.t_rb);
ath_dynack_compute_to(ah);
@@ -294,11 +321,9 @@
*/
void ath_dynack_node_init(struct ath_hw *ah, struct ath_node *an)
{
- /* ackto = slottime + sifs + air delay */
- u32 ackto = 9 + 16 + 64;
struct ath_dynack *da = &ah->dynack;
- an->ackto = ackto;
+ an->ackto = da->ackto;
spin_lock_bh(&da->qlock);
list_add_tail(&an->list, &da->nodes);
@@ -329,22 +354,26 @@
*/
void ath_dynack_reset(struct ath_hw *ah)
{
- /* ackto = slottime + sifs + air delay */
- u32 ackto = 9 + 16 + 64;
struct ath_dynack *da = &ah->dynack;
+ struct ath_node *an;
- da->lto = jiffies;
- da->ackto = ackto;
+ spin_lock_bh(&da->qlock);
+
+ da->lto = jiffies + COMPUTE_TO;
da->st_rbf.t_rb = 0;
da->st_rbf.h_rb = 0;
da->ack_rbf.t_rb = 0;
da->ack_rbf.h_rb = 0;
+ da->ackto = ath_dynack_get_max_to(ah);
+ list_for_each_entry(an, &da->nodes, list)
+ an->ackto = da->ackto;
+
/* init acktimeout */
- ath9k_hw_setslottime(ah, (ackto - 3) / 2);
- ath9k_hw_set_ack_timeout(ah, ackto);
- ath9k_hw_set_cts_timeout(ah, ackto);
+ ath_dynack_set_timeout(ah, da->ackto);
+
+ spin_unlock_bh(&da->qlock);
}
EXPORT_SYMBOL(ath_dynack_reset);
@@ -361,6 +390,8 @@
spin_lock_init(&da->qlock);
INIT_LIST_HEAD(&da->nodes);
+ /* ackto = slottime + sifs + air delay */
+ da->ackto = 9 + 16 + 64;
ah->hw->wiphy->features |= NL80211_FEATURE_ACKTO_ESTIMATION;
}
--
Gitblit v1.6.2