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ath10k: fix tx performance regression on older chipsets

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Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2016-06-29 11:01:16 +02:00
parent d002aee42c
commit 76d09dcb01
2 changed files with 75 additions and 2 deletions
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73
package/kernel/mac80211/patches/311-ath10k-disable-wake_tx_queue-for-older-devices.patch Normal file
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@ -0,0 +1,73 @@
From: Michal Kazior <michal.kazior@tieto.com>
Date: Tue, 17 May 2016 14:47:01 +0200
Subject: [PATCH] ath10k: disable wake_tx_queue for older devices
Some setups suffer performance regressions with
current wake_tx_queue implementation.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
---
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -667,6 +667,7 @@ struct ath10k_fw_components {
struct ath10k {
struct ath_common ath_common;
struct ieee80211_hw *hw;
+ struct ieee80211_ops *ops;
struct device *dev;
u8 mac_addr[ETH_ALEN];
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -7497,21 +7497,32 @@ static const struct ieee80211_channel at
struct ath10k *ath10k_mac_create(size_t priv_size)
{
struct ieee80211_hw *hw;
+ struct ieee80211_ops *ops;
struct ath10k *ar;
- hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
- if (!hw)
+ ops = kmemdup(&ath10k_ops, sizeof(ath10k_ops), GFP_KERNEL);
+ if (!ops)
+ return NULL;
+
+ hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, ops);
+ if (!hw) {
+ kfree(ops);
return NULL;
+ }
ar = hw->priv;
ar->hw = hw;
+ ar->ops = ops;
return ar;
}
void ath10k_mac_destroy(struct ath10k *ar)
{
+ struct ieee80211_ops *ops = ar->ops;
+
ieee80211_free_hw(ar->hw);
+ kfree(ops);
}
static const struct ieee80211_iface_limit ath10k_if_limits[] = {
@@ -7945,6 +7956,15 @@ int ath10k_mac_register(struct ath10k *a
ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
}
+ /* Current wake_tx_queue implementation imposes a significant
+ * performance penalty in some setups. The tx scheduling code needs
+ * more work anyway so disable the wake_tx_queue unless firmware
+ * supports the pull-push mechanism.
+ */
+ if (!test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
+ ar->running_fw->fw_file.fw_features))
+ ar->ops->wake_tx_queue = NULL;
+
ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
ath10k_reg_notifier);
if (ret) {

4
package/kernel/mac80211/patches/930-ath10k_add_tpt_led_trigger.patch
View file

@ -1,6 +1,6 @@
--- a/drivers/net/wireless/ath/ath10k/mac.c --- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -7731,6 +7731,21 @@ struct ath10k_vif *ath10k_get_arvif(stru @@ -7742,6 +7742,21 @@ struct ath10k_vif *ath10k_get_arvif(stru
return arvif_iter.arvif; return arvif_iter.arvif;
} }
@ -22,7 +22,7 @@
int ath10k_mac_register(struct ath10k *ar) int ath10k_mac_register(struct ath10k *ar)
{ {
static const u32 cipher_suites[] = { static const u32 cipher_suites[] = {
@@ -7955,6 +7970,12 @@ int ath10k_mac_register(struct ath10k *a @@ -7975,6 +7990,12 @@ int ath10k_mac_register(struct ath10k *a
ar->hw->wiphy->cipher_suites = cipher_suites; ar->hw->wiphy->cipher_suites = cipher_suites;
ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);