kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-20 19:23:40 +00:00
Code Issues Releases Packages Activity
linux/drivers/net/usb
History
Hayes Wang 961d9a6e47 r8152: limit the RX buffer size of RTL8153A for USB 2.0 
[ Upstream commit f91a50d8b5 ]

If the USB host controller is EHCI, the throughput is reduced from
300Mb/s to 60Mb/s, when the rx buffer size is modified from 16K to
32K.

According to the EHCI spec, the maximum size of the qTD is 20K.
Therefore, when the driver uses more than 20K buffer, the latency
time of EHCI would be increased. And, it let the RTL8153A get worse
throughput.

However, the driver uses alloc_pages() for rx buffer, so I limit
the rx buffer to 16K rather than 20K.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=205923
Fixes: ec5791c202 ("r8152: separate the rx buffer size")
Reported-by: Robert Davies <robdavies1977@gmail.com>
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2021-03-30 14:32:02 +02:00
..
aqc111.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
aqc111.h net: usb: aqc111: Use the correct style for SPDX License Identifier 2019-11-27 11:27:01 -08:00
asix.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
asix_common.c net: usb: Fix uninit-was-stored issue in asix_read_phy_addr() 2020-08-27 07:37:19 -07:00
asix_devices.c net: usb: asix: init MAC address buffers 2019-07-02 15:24:48 -07:00
ax88172a.c ax88172a: fix ax88172a_unbind() failures 2020-07-15 18:26:29 -07:00
ax88179_178a.c net: usb: ax88179_178a: add MCT usb 3.0 adapter 2020-09-28 18:39:05 -07:00
catc.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
cdc-phonet.c net: cdc-phonet: fix data-interface release on probe failure 2021-03-30 14:32:02 +02:00
cdc_eem.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
cdc_ether.c r8152: Add Lenovo Powered USB-C Travel Hub 2021-01-19 18:27:22 +01:00
cdc_mbim.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cdc_ncm.c net: cdc_ncm: correct overhead in delayed_ndp_size 2021-01-17 14:16:54 +01:00
cdc_subset.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
ch9200.c net: ch9200: remove unnecessary return 2020-01-07 13:30:36 -08:00
cx82310_eth.c cx82310_eth: fix error return code in cx82310_bind() 2020-11-16 15:23:44 -08:00
dm9601.c net: usb: dm9601: Add USB ID of Keenetic Plus DSL 2020-09-01 15:35:23 -07:00
gl620a.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
hso.c usb: hso: remove bogus check for EINPROGRESS 2020-08-05 17:43:39 -07:00
huawei_cdc_ncm.c net: huawei_cdc_ncm: remove redundant assignment to variable ret 2020-05-10 11:13:07 -07:00
int51x1.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
ipheth.c usbnet: ipheth: fix connectivity with iOS 14 2020-11-21 14:01:34 -08:00
kalmia.c net: kalmia: fix memory leaks 2019-08-18 13:03:21 -07:00
kaweth.c net: usb: kaweth: Remove last user of kaweth_control() 2020-09-29 14:02:54 -07:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-04 21:28:59 -07:00
lan78xx.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
lan78xx.h net: lan78xx: Switch to SPDX identifier 2018-09-05 22:20:45 -07:00
lg-vl600.c net: usb: Delete unnecessary checks before the macro call “dev_kfree_skb” 2019-08-22 16:22:03 -07:00
Makefile net: usb: aqc111: Driver skeleton for Aquantia AQtion USB to 5GbE 2018-11-27 15:46:06 -08:00
mcs7830.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
net1080.c net: usb: net1080: Remove in_interrupt() comment 2020-09-29 14:02:54 -07:00
pegasus.c USB/PHY/Thunderbolt driver patches for 5.10-rc1 2020-10-15 09:51:18 -07:00
pegasus.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
plusb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
qmi_wwan.c net: usb: qmi_wwan: allow qmimux add/del with master up 2021-03-17 17:06:15 +01:00
r8152.c r8152: limit the RX buffer size of RTL8153A for USB 2.0 2021-03-30 14:32:02 +02:00
rndis_host.c rndis_host: set proper input size for OID_GEN_PHYSICAL_MEDIUM request 2021-01-23 16:04:01 +01:00
rtl8150.c net: usb: rtl8150: don't incorrectly assign random MAC addresses 2020-10-18 12:57:30 -07:00
sierra_net.c net: sierra_net: Remove unused inline function 2020-05-05 12:07:43 -07:00
smsc75xx.c net/smscx5xx: change to of_get_mac_address() eth_platform_get_mac_address() 2020-10-02 15:21:17 -07:00
smsc75xx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
smsc95xx.c net/smscx5xx: change to of_get_mac_address() eth_platform_get_mac_address() 2020-10-02 15:21:17 -07:00
smsc95xx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
sr9700.c drivers: net: Remove unnecessary semicolon 2019-03-01 23:13:49 -08:00
sr9700.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sr9800.c net: usb: sr9800: fix uninitialized local variable 2019-10-15 21:02:12 -07:00
sr9800.h USB2NET : SR9800 : One chip USB2.0 USB2NET SR9800 Device Driver Support 2014-02-10 16:53:06 -08:00
usbnet.c net: usbnet: use new function dev_fetch_sw_netstats 2020-10-13 17:33:49 -07:00
zaurus.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00