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![]() When HW aggregates packets for an LRO session, it writes the payload
of two consecutive packets of a flow contiguously, so that they usually
share a cacheline.
The first byte of a packet's payload is written immediately after
the last byte of the preceding packet.
In this flow, there are two consecutive write requests to the shared
cacheline:
1. Regular write for the earlier packet.
2. Read-modify-write for the following packet.
In case of relaxed-ordering on, these two writes might be re-ordered.
Using the end padding optimization (to avoid partial write for the last
cacheline of a packet) becomes problematic if the two writes occur
out-of-order, as the padding would overwrite payload that belongs to
the following packet, causing data corruption.
Avoid this by disabling the end padding optimization when both
LRO and relaxed-ordering are enabled.
Fixes:
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.. | ||
3com | ||
8390 | ||
actions | ||
adaptec | ||
aeroflex | ||
agere | ||
alacritech | ||
allwinner | ||
alteon | ||
altera | ||
amazon | ||
amd | ||
apm | ||
apple | ||
aquantia | ||
arc | ||
atheros | ||
broadcom | ||
brocade | ||
cadence | ||
calxeda | ||
cavium | ||
chelsio | ||
cirrus | ||
cisco | ||
cortina | ||
davicom | ||
dec | ||
dlink | ||
emulex | ||
ezchip | ||
faraday | ||
freescale | ||
fujitsu | ||
hisilicon | ||
huawei | ||
i825xx | ||
ibm | ||
intel | ||
marvell | ||
mediatek | ||
mellanox | ||
micrel | ||
microchip | ||
microsoft | ||
moxa | ||
mscc | ||
myricom | ||
natsemi | ||
neterion | ||
netronome | ||
ni | ||
nvidia | ||
nxp | ||
oki-semi | ||
packetengines | ||
pasemi | ||
pensando | ||
qlogic | ||
qualcomm | ||
rdc | ||
realtek | ||
renesas | ||
rocker | ||
samsung | ||
seeq | ||
sfc | ||
sgi | ||
silan | ||
sis | ||
smsc | ||
socionext | ||
stmicro | ||
sun | ||
synopsys | ||
tehuti | ||
ti | ||
toshiba | ||
tundra | ||
via | ||
wiznet | ||
xilinx | ||
xircom | ||
xscale | ||
dnet.c | ||
dnet.h | ||
ec_bhf.c | ||
ethoc.c | ||
fealnx.c | ||
jme.c | ||
jme.h | ||
Kconfig | ||
korina.c | ||
lantiq_etop.c | ||
lantiq_xrx200.c | ||
Makefile |