diff options
Diffstat (limited to 'package/kernel/mac80211/patches/ath/560-ath9k-dynack-set-max-timeout-according-to-channel-wi.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/ath/560-ath9k-dynack-set-max-timeout-according-to-channel-wi.patch | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/ath/560-ath9k-dynack-set-max-timeout-according-to-channel-wi.patch b/package/kernel/mac80211/patches/ath/560-ath9k-dynack-set-max-timeout-according-to-channel-wi.patch new file mode 100644 index 0000000000..f40289cca4 --- /dev/null +++ b/package/kernel/mac80211/patches/ath/560-ath9k-dynack-set-max-timeout-according-to-channel-wi.patch @@ -0,0 +1,96 @@ +From 3f737abb7d53cc80d619a3b4a30b6fa63cdc8df7 Mon Sep 17 00:00:00 2001 +From: Lorenzo Bianconi <lorenzo@kernel.org> +Date: Tue, 20 Aug 2019 18:20:21 +0200 +Subject: [PATCH 3/4] ath9k: dynack: set max timeout according to channel width + +Compute maximum configurable ackimeout/ctstimeout according to channel +width (clockrate) + +Tested-by: Koen Vandeputte <koen.vandeputte@ncentric.com> +Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> +--- + drivers/net/wireless/ath/ath9k/dynack.c | 38 +++++++++++++++++++------ + 1 file changed, 30 insertions(+), 8 deletions(-) + +diff --git a/drivers/net/wireless/ath/ath9k/dynack.c b/drivers/net/wireless/ath/ath9k/dynack.c +index 398ea872751f..fe9181533de3 100644 +--- a/drivers/net/wireless/ath/ath9k/dynack.c ++++ b/drivers/net/wireless/ath/ath9k/dynack.c +@@ -20,11 +20,30 @@ + + #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 + * +@@ -126,15 +145,16 @@ static void ath_dynack_compute_ackto(struct ath_hw *ah) + */ + static void ath_dynack_compute_to(struct ath_hw *ah) + { +- u32 ackto, ack_ts; +- u8 *dst, *src; ++ struct ath_dynack *da = &ah->dynack; ++ u32 ackto, ack_ts, max_to; + struct ieee80211_sta *sta; +- struct ath_node *an; + struct ts_info *st_ts; +- struct ath_dynack *da = &ah->dynack; ++ 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]; +@@ -150,7 +170,7 @@ static void ath_dynack_compute_to(struct ath_hw *ah) + 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) { +@@ -207,8 +227,10 @@ void ath_dynack_sample_tx_ts(struct ath_hw *ah, struct sk_buff *skb, + if (ieee80211_is_assoc_req(hdr->frame_control) || + ieee80211_is_assoc_resp(hdr->frame_control) || + ieee80211_is_auth(hdr->frame_control)) { ++ u32 max_to = ath_dynack_get_max_to(ah); ++ + ath_dbg(common, DYNACK, "late ack\n"); +- ath_dynack_set_timeout(ah, LATEACK_TO); ++ ath_dynack_set_timeout(ah, max_to); + if (sta) { + struct ath_node *an; + +-- +2.17.1 + |