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linux-next/drivers/net/usb
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Hayes Wang f91a50d8b5 r8152: limit the RX buffer size of RTL8153A for USB 2.0 
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>
2021-03-19 11:55:09 -07:00
..
aqc111.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
aqc111.h net: usb: aqc111: Use the correct style for SPDX License Identifier 2019-11-27 11:27:01 -08:00
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: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
asix.h
ax88172a.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
ax88179_178a.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
catc.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
cdc_eem.c
cdc_ether.c net: usb: cdc_ether: added support for Thales Cinterion PLSx3 modem family. 2021-01-28 13:01:27 -08:00
cdc_mbim.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
cdc_ncm.c net: usb: cdc_ncm: emit dev_err on error paths 2021-03-08 11:54:05 -08:00
cdc_subset.c
cdc-phonet.c net: cdc-phonet: fix data-interface release on probe failure 2021-03-18 19:45:37 -07:00
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: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
gl620a.c
hso.c net: usb: hso: use new tasklet API 2021-02-02 15:51:18 -08:00
huawei_cdc_ncm.c net: huawei_cdc_ncm: remove redundant assignment to variable ret 2020-05-10 11:13:07 -07:00
int51x1.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
ipheth.c usbnet: ipheth: fix connectivity with iOS 14 2020-11-21 14:01:34 -08:00
kalmia.c
kaweth.c net: usb: kaweth: Remove last user of kaweth_control() 2020-09-29 14:02:54 -07:00
Kconfig nt: usb: USB_RTL8153_ECM should not default to y 2021-01-14 10:51:06 -08:00
lan78xx.c net: usb: lan78xx: use new tasklet API 2021-02-02 15:51:18 -08:00
lan78xx.h
lg-vl600.c
Makefile r8153_ecm: avoid to be prior to r8152 driver 2020-11-19 08:23:46 -08:00
mcs7830.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
net1080.c net: usb: net1080: Remove in_interrupt() comment 2020-09-29 14:02:54 -07:00
pegasus.c net: usb: pegasus: use new tasklet API 2021-02-02 15:51:18 -08:00
pegasus.h
plusb.c
qmi_wwan.c net: usb: qmi_wwan: allow qmimux add/del with master up 2021-03-04 14:20:21 -08:00
r8152.c r8152: limit the RX buffer size of RTL8153A for USB 2.0 2021-03-19 11:55:09 -07:00
r8153_ecm.c r8153_ecm: Add Lenovo Powered USB-C Hub as a fallback of r8152 2021-01-12 20:00:51 -08:00
rndis_host.c rndis_host: set proper input size for OID_GEN_PHYSICAL_MEDIUM request 2021-01-11 17:54:40 -08:00
rtl8150.c net: usb: rtl8150: use new tasklet API 2021-02-02 15:51:18 -08:00
sierra_net.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
smsc75xx.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
smsc75xx.h
smsc95xx.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
smsc95xx.h
sr9700.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
sr9700.h
sr9800.c net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias 2020-11-12 14:58:27 -08:00
sr9800.h
usbnet.c net: usb: log errors to dmesg/syslog 2021-03-08 11:54:32 -08:00
zaurus.c