cbca994bbd
ath10k uses a rather high number of buffers to communicate with the QCA firmware. Especially the HTC (host-target-communication) and HTT (host-target-transport) can take up a lot of memory when data is transferred over a ath10k wifi link. Even a 256MB device with three radios can go OOM (while sending to three devices using UDP unicast/multicast packets) with the default buffer limits. Unfortunately, this also reduced the maximum 5GHz throughput on an IPQ40xx device from 494/432 Mbit/s for TCP transfers (download/upload) to 438/343 Mbit/s. These throughput values should still be good enough for a Freifunk installation.
74 lines
2.5 KiB
Diff
74 lines
2.5 KiB
Diff
From: Christian Lamparter <chunkeey@gmail.com>
|
|
Date: Mon, 14 Nov 2016 04:57:38 +0100
|
|
Subject: mac80211: limit ath10k memory hunger
|
|
|
|
This is a problem with 128MiB RAM
|
|
|
|
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
|
|
[sven@narfation.org: remove QCA4019 part of change, adjust commit message]
|
|
Signed-off-by: Sven Eckelmann <sven@narfation.org>
|
|
|
|
Origin: backport, https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=cc189c0b7fa015978b04bb663a75b1da726376b5
|
|
|
|
diff --git a/package/kernel/mac80211/patches/960-0010-ath10k-limit-htt-rx-ring-size.patch b/package/kernel/mac80211/patches/960-0010-ath10k-limit-htt-rx-ring-size.patch
|
|
new file mode 100644
|
|
index 0000000000000000000000000000000000000000..d49be4df703e8039509ecea23de8b5bd8e590765
|
|
--- /dev/null
|
|
+++ b/package/kernel/mac80211/patches/960-0010-ath10k-limit-htt-rx-ring-size.patch
|
|
@@ -0,0 +1,11 @@
|
|
+--- a/drivers/net/wireless/ath/ath10k/htt.h
|
|
++++ b/drivers/net/wireless/ath/ath10k/htt.h
|
|
+@@ -199,7 +199,7 @@ enum htt_rx_ring_flags {
|
|
+ };
|
|
+
|
|
+ #define HTT_RX_RING_SIZE_MIN 128
|
|
+-#define HTT_RX_RING_SIZE_MAX 2048
|
|
++#define HTT_RX_RING_SIZE_MAX 512
|
|
+
|
|
+ struct htt_rx_ring_setup_ring {
|
|
+ __le32 fw_idx_shadow_reg_paddr;
|
|
diff --git a/package/kernel/mac80211/patches/960-0011-ath10k-limit-pci-buffer-size.patch b/package/kernel/mac80211/patches/960-0011-ath10k-limit-pci-buffer-size.patch
|
|
new file mode 100644
|
|
index 0000000000000000000000000000000000000000..54cc2ce7847d9256a78d3c60101ba6cd9baf496a
|
|
--- /dev/null
|
|
+++ b/package/kernel/mac80211/patches/960-0011-ath10k-limit-pci-buffer-size.patch
|
|
@@ -0,0 +1,38 @@
|
|
+--- a/drivers/net/wireless/ath/ath10k/pci.c
|
|
++++ b/drivers/net/wireless/ath/ath10k/pci.c
|
|
+@@ -127,7 +127,7 @@ static struct ce_attr host_ce_config_wla
|
|
+ .flags = CE_ATTR_FLAGS,
|
|
+ .src_nentries = 0,
|
|
+ .src_sz_max = 2048,
|
|
+- .dest_nentries = 512,
|
|
++ .dest_nentries = 128,
|
|
+ .recv_cb = ath10k_pci_htt_htc_rx_cb,
|
|
+ },
|
|
+
|
|
+@@ -136,7 +136,7 @@ static struct ce_attr host_ce_config_wla
|
|
+ .flags = CE_ATTR_FLAGS,
|
|
+ .src_nentries = 0,
|
|
+ .src_sz_max = 2048,
|
|
+- .dest_nentries = 128,
|
|
++ .dest_nentries = 64,
|
|
+ .recv_cb = ath10k_pci_htc_rx_cb,
|
|
+ },
|
|
+
|
|
+@@ -163,7 +163,7 @@ static struct ce_attr host_ce_config_wla
|
|
+ .flags = CE_ATTR_FLAGS,
|
|
+ .src_nentries = 0,
|
|
+ .src_sz_max = 512,
|
|
+- .dest_nentries = 512,
|
|
++ .dest_nentries = 128,
|
|
+ .recv_cb = ath10k_pci_htt_rx_cb,
|
|
+ },
|
|
+
|
|
+@@ -188,7 +188,7 @@ static struct ce_attr host_ce_config_wla
|
|
+ .flags = CE_ATTR_FLAGS,
|
|
+ .src_nentries = 0,
|
|
+ .src_sz_max = 2048,
|
|
+- .dest_nentries = 128,
|
|
++ .dest_nentries = 96,
|
|
+ .recv_cb = ath10k_pci_pktlog_rx_cb,
|
|
+ },
|
|
+
|