* [dpdk-dev] RX checksum offloading
@ 2013-11-07 0:00 Benson, Bryan
2013-11-07 3:09 ` Benson, Bryan
0 siblings, 1 reply; 8+ messages in thread
From: Benson, Bryan @ 2013-11-07 0:00 UTC (permalink / raw)
To: dev
All,
Has anyone had any experience with hardware checksum offloads not working? It appears that the combination of settings we are using in our application may be the crux of the issue, as offloading test-pmd application in csum mode correctly identifies bad packets via the ol_flags. I am a bit stumped in tracking it down, any help is greatly appreciated!
We are using the 82599 NIC & DPDK 1.3 (with RSC disabled).
Settings:
/* Ethernet Configuration */
static struct rte_eth_conf port_conf = {
.rxmode = {
.split_hdr_size = 0,
.header_split = 0, /**< Header Split disabled */
.hw_ip_checksum = 1, /**< IP/UDP/TCP checksum offload enabled. */
.hw_vlan_filter = 0, /**< VLAN filtering disabled */
.jumbo_frame = 0, /**< Jumbo Frame Support disabled */
.hw_strip_crc = 1, /**< CRC stripped by hardware */
},
.rx_adv_conf = {
.rss_conf = {
.rss_key = NULL,
.rss_hf = 0x00,
},
},
.txmode = {
},
};
Thank you,
Bryan Benson
Amazon Web Services
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [dpdk-dev] RX checksum offloading
2013-11-07 0:00 [dpdk-dev] RX checksum offloading Benson, Bryan
@ 2013-11-07 3:09 ` Benson, Bryan
2013-11-07 3:44 ` Benson, Bryan
0 siblings, 1 reply; 8+ messages in thread
From: Benson, Bryan @ 2013-11-07 3:09 UTC (permalink / raw)
To: dev
All,
The receive checksum issue seems to be caused by using a RX_FREE_THRESH value that is 32 or larger, as validated by the test-pmd application.
I used 2 different packet types - bad IP checksum sent to port 0 and bad tcp checksum to port 1. The way I was sending the packets did not vary between the various tests.
Below is a brief summary of the testing - additional gory text is attached.
0, 8, 16, 24, 28, 30, 31 are okay.
Values above 32 are not, as tested with 32, 64 and 128.
I will continue researching this - The version I used to test this is the vanilla version of DPDK 1.3, but with the RSC disable patch applied (helps when there are many ACKs).
Thanks,
Bryan Benson
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 -i
... <text removed>
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=0
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 490511 RX-dropped: 0 RX-total: 490511
Bad-ipcsum: 490496 Bad-l4csum: 0
TX-packets: 488720 TX-dropped: 0 TX-total: 488720
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 488804 RX-dropped: 0 RX-total: 488804
Bad-ipcsum: 0 Bad-l4csum: 488704
TX-packets: 490511 TX-dropped: 0 TX-total: 490511
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 979315 RX-dropped: 0 RX-total: 979315
TX-packets: 979231 TX-dropped: 0 TX-total: 979231
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Done.
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 --rxfreet=32 -i
... <text removed>
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=32
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 378894 RX-dropped: 0 RX-total: 378894
Bad-ipcsum: 0 Bad-l4csum: 0
TX-packets: 381197 TX-dropped: 0 TX-total: 381197
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 381197 RX-dropped: 0 RX-total: 381197
Bad-ipcsum: 0 Bad-l4csum: 0
TX-packets: 378894 TX-dropped: 0 TX-total: 378894
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 760091 RX-dropped: 0 RX-total: 760091
TX-packets: 760091 TX-dropped: 0 TX-total: 760091
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [dpdk-dev] RX checksum offloading
2013-11-07 3:09 ` Benson, Bryan
@ 2013-11-07 3:44 ` Benson, Bryan
2013-11-07 9:06 ` Thomas Monjalon
0 siblings, 1 reply; 8+ messages in thread
From: Benson, Bryan @ 2013-11-07 3:44 UTC (permalink / raw)
To: dev
Didn't realize attachments were stripped - here is the full text - sorry for the SPAM!
== Full text of the rx checksum issues testing & validation ==
0, 8, 16, 24, 28, 30, 31 are okay.
Values above 32 are not (tested with 32, 64 and 128)
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 -i
EAL: coremask set to ff00ff00
EAL: Detected lcore 8 as core 0 on socket 0
EAL: Detected lcore 9 as core 1 on socket 0
EAL: Detected lcore 10 as core 2 on socket 0
EAL: Detected lcore 11 as core 3 on socket 0
EAL: Detected lcore 12 as core 4 on socket 0
EAL: Detected lcore 13 as core 5 on socket 0
EAL: Detected lcore 14 as core 6 on socket 0
EAL: Detected lcore 15 as core 7 on socket 0
EAL: Detected lcore 24 as core 0 on socket 0
EAL: Detected lcore 25 as core 1 on socket 0
EAL: Detected lcore 26 as core 2 on socket 0
EAL: Detected lcore 27 as core 3 on socket 0
EAL: Detected lcore 28 as core 4 on socket 0
EAL: Detected lcore 29 as core 5 on socket 0
EAL: Detected lcore 30 as core 6 on socket 0
EAL: Detected lcore 31 as core 7 on socket 0
EAL: Setting up hugepage memory...
EAL: Ask a virtual area of 0x400000000 bytes
EAL: Virtual area found at 0x7f17c0000000 (size = 0x400000000)
EAL: Requesting 16 pages of size 1024MB from socket 0
EAL: WARNING: Cannot mmap /dev/hpet! The TSC will be used instead.
EAL: Master core 8 is ready (tid=dbe54800)
EAL: Core 10 is ready (tid=da68f700)
EAL: Core 12 is ready (tid=d968d700)
EAL: Core 13 is ready (tid=d8e8c700)
EAL: Core 24 is ready (tid=d2ffd700)
EAL: Core 14 is ready (tid=d3fff700)
EAL: Core 25 is ready (tid=d27fc700)
EAL: Core 9 is ready (tid=dae90700)
EAL: Core 15 is ready (tid=d37fe700)
EAL: Core 27 is ready (tid=d17fa700)
EAL: Core 28 is ready (tid=d0ff9700)
EAL: Core 30 is ready (tid=bf7fe700)
EAL: Core 26 is ready (tid=d1ffb700)
EAL: Core 29 is ready (tid=bffff700)
EAL: Core 11 is ready (tid=d9e8e700)
EAL: Core 31 is ready (tid=beffd700)
EAL: probe driver: 8086:10d3 rte_em_pmd
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: unbind kernel driver /sys/bus/pci/devices/0000:84:00.0/driver/unbind
EAL: bind PCI device 0000:84:00.0
EAL: Device bound
EAL: map PCI resource for device 0000:84:00.0
EAL: PCI memory mapped at 0x7f1bdbdf0000
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: unbind kernel driver /sys/bus/pci/devices/0000:84:00.1/driver/unbind
EAL: bind PCI device 0000:84:00.1
EAL: Device bound
EAL: map PCI resource for device 0000:84:00.1
EAL: PCI memory mapped at 0x7f1bdbdd0000
Interactive-mode selected
Configuring Port 0
PMD: Disable RSC
PMD: Saved register RXCSUM:3000
Configuring Port 1
PMD: Disable RSC
PMD: Saved register RXCSUM:3000
Checking link statuses...
Port 0 Link Up - speed 10000 Mbps - full-duplex
Port 1 Link Up - speed 10000 Mbps - full-duplex
Done
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=0
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 490511 RX-dropped: 0 RX-total: 490511
Bad-ipcsum: 490496 Bad-l4csum: 0
TX-packets: 488720 TX-dropped: 0 TX-total: 488720
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 488804 RX-dropped: 0 RX-total: 488804
Bad-ipcsum: 0 Bad-l4csum: 488704
TX-packets: 490511 TX-dropped: 0 TX-total: 490511
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 979315 RX-dropped: 0 RX-total: 979315
TX-packets: 979231 TX-dropped: 0 TX-total: 979231
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Done.
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 --rxfreet=16 -i
EAL: coremask set to ff00ff00
EAL: Detected lcore 8 as core 0 on socket 0
EAL: Detected lcore 9 as core 1 on socket 0
EAL: Detected lcore 10 as core 2 on socket 0
EAL: Detected lcore 11 as core 3 on socket 0
EAL: Detected lcore 12 as core 4 on socket 0
EAL: Detected lcore 13 as core 5 on socket 0
EAL: Detected lcore 14 as core 6 on socket 0
EAL: Detected lcore 15 as core 7 on socket 0
EAL: Detected lcore 24 as core 0 on socket 0
EAL: Detected lcore 25 as core 1 on socket 0
EAL: Detected lcore 26 as core 2 on socket 0
EAL: Detected lcore 27 as core 3 on socket 0
EAL: Detected lcore 28 as core 4 on socket 0
EAL: Detected lcore 29 as core 5 on socket 0
EAL: Detected lcore 30 as core 6 on socket 0
EAL: Detected lcore 31 as core 7 on socket 0
EAL: Setting up hugepage memory...
EAL: Ask a virtual area of 0x400000000 bytes
EAL: Virtual area found at 0x7fdc40000000 (size = 0x400000000)
EAL: Requesting 16 pages of size 1024MB from socket 0
EAL: WARNING: Cannot mmap /dev/hpet! The TSC will be used instead.
EAL: Master core 8 is ready (tid=7476d800)
EAL: Core 9 is ready (tid=737a9700)
EAL: Core 12 is ready (tid=6bfff700)
EAL: Core 15 is ready (tid=70fa4700)
EAL: Core 10 is ready (tid=72fa8700)
EAL: Core 14 is ready (tid=717a5700)
EAL: Core 11 is ready (tid=727a7700)
EAL: Core 13 is ready (tid=71fa6700)
EAL: Core 27 is ready (tid=69ffb700)
EAL: Core 28 is ready (tid=697fa700)
EAL: Core 25 is ready (tid=6affd700)
EAL: Core 31 is ready (tid=5b7fe700)
EAL: Core 24 is ready (tid=6b7fe700)
EAL: Core 30 is ready (tid=5bfff700)
EAL: Core 29 is ready (tid=68ff9700)
EAL: Core 26 is ready (tid=6a7fc700)
EAL: probe driver: 8086:10d3 rte_em_pmd
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: unbind kernel driver /sys/bus/pci/devices/0000:84:00.0/driver/unbind
EAL: bind PCI device 0000:84:00.0
EAL: Device bound
EAL: map PCI resource for device 0000:84:00.0
EAL: PCI memory mapped at 0x7fe074709000
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: unbind kernel driver /sys/bus/pci/devices/0000:84:00.1/driver/unbind
EAL: bind PCI device 0000:84:00.1
EAL: Device bound
EAL: map PCI resource for device 0000:84:00.1
EAL: PCI memory mapped at 0x7fe0746e9000
Interactive-mode selected
Configuring Port 0
PMD: Disable RSC
PMD: Saved register RXCSUM:3000Configuring Port 1
PMD: Disable RSC
PMD: Saved register RXCSUM:3000Checking link statuses...
Port 0 Link Up - speed 10000 Mbps - full-duplex
Port 1 Link Up - speed 10000 Mbps - full-duplex
Done
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=16
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 543761 RX-dropped: 0 RX-total: 543761
Bad-ipcsum: 543558 Bad-l4csum: 0
TX-packets: 542023 TX-dropped: 0 TX-total: 542023
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 542226 RX-dropped: 0 RX-total: 542226
Bad-ipcsum: 0 Bad-l4csum: 542005
TX-packets: 543575 TX-dropped: 0 TX-total: 543575
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 1085987 RX-dropped: 0 RX-total: 1085987
TX-packets: 1085598 TX-dropped: 0 TX-total: 1085598
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Done.
testpmd> quit
Stopping port 0...done
Stopping port 1...done
bye...
== 32 or more testing ==
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 --rxfreet=32 -i
EAL: coremask set to ff00ff00
EAL: Detected lcore 8 as core 0 on socket 0
EAL: Detected lcore 9 as core 1 on socket 0
EAL: Detected lcore 10 as core 2 on socket 0
EAL: Detected lcore 11 as core 3 on socket 0
EAL: Detected lcore 12 as core 4 on socket 0
EAL: Detected lcore 13 as core 5 on socket 0
EAL: Detected lcore 14 as core 6 on socket 0
EAL: Detected lcore 15 as core 7 on socket 0
EAL: Detected lcore 24 as core 0 on socket 0
EAL: Detected lcore 25 as core 1 on socket 0
EAL: Detected lcore 26 as core 2 on socket 0
EAL: Detected lcore 27 as core 3 on socket 0
EAL: Detected lcore 28 as core 4 on socket 0
EAL: Detected lcore 29 as core 5 on socket 0
EAL: Detected lcore 30 as core 6 on socket 0
EAL: Detected lcore 31 as core 7 on socket 0
EAL: Setting up hugepage memory...
EAL: Ask a virtual area of 0x400000000 bytes
EAL: Virtual area found at 0x7f6d00000000 (size = 0x400000000)
EAL: Requesting 16 pages of size 1024MB from socket 0
EAL: WARNING: Cannot mmap /dev/hpet! The TSC will be used instead.
EAL: Master core 8 is ready (tid=581d800)
EAL: Core 9 is ready (tid=4859700)
EAL: Core 10 is ready (tid=4058700)
EAL: Core 12 is ready (tid=3056700)
EAL: Core 27 is ready (tid=1052700)
EAL: Core 29 is ready (tid=fe7fc700)
EAL: Core 24 is ready (tid=2855700)
EAL: Core 25 is ready (tid=2054700)
EAL: Core 11 is ready (tid=3857700)
EAL: Core 30 is ready (tid=fdffb700)
EAL: Core 15 is ready (tid=feffd700)
EAL: Core 13 is ready (tid=fffff700)
EAL: Core 28 is ready (tid=851700)
EAL: Core 31 is ready (tid=fd7fa700)
EAL: Core 14 is ready (tid=ff7fe700)
EAL: Core 26 is ready (tid=1853700)
EAL: probe driver: 8086:10d3 rte_em_pmd
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: unbind kernel driver /sys/bus/pci/devices/0000:84:00.0/driver/unbind
EAL: bind PCI device 0000:84:00.0
EAL: Device bound
EAL: map PCI resource for device 0000:84:00.0
EAL: PCI memory mapped at 0x7f71057b9000
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: unbind kernel driver /sys/bus/pci/devices/0000:84:00.1/driver/unbind
EAL: bind PCI device 0000:84:00.1
EAL: Device bound
EAL: map PCI resource for device 0000:84:00.1
EAL: PCI memory mapped at 0x7f7105799000
Interactive-mode selected
Configuring Port 0
PMD: Disable RSC
PMD: Saved register RXCSUM:3000Configuring Port 1
PMD: Disable RSC
PMD: Saved register RXCSUM:3000Checking link statuses...
Port 0 Link Up - speed 10000 Mbps - full-duplex
Port 1 Link Up - speed 10000 Mbps - full-duplex
Done
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=32
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 378894 RX-dropped: 0 RX-total: 378894
Bad-ipcsum: 0 Bad-l4csum: 0
TX-packets: 381197 TX-dropped: 0 TX-total: 381197
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 381197 RX-dropped: 0 RX-total: 381197
Bad-ipcsum: 0 Bad-l4csum: 0
TX-packets: 378894 TX-dropped: 0 TX-total: 378894
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 760091 RX-dropped: 0 RX-total: 760091
TX-packets: 760091 TX-dropped: 0 TX-total: 760091
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 --rxfreet=64 -i
EAL: coremask set to ff00ff00
EAL: Detected lcore 8 as core 0 on socket 0
EAL: Detected lcore 9 as core 1 on socket 0
EAL: Detected lcore 10 as core 2 on socket 0
EAL: Detected lcore 11 as core 3 on socket 0
EAL: Detected lcore 12 as core 4 on socket 0
EAL: Detected lcore 13 as core 5 on socket 0
EAL: Detected lcore 14 as core 6 on socket 0
EAL: Detected lcore 15 as core 7 on socket 0
EAL: Detected lcore 24 as core 0 on socket 0
EAL: Detected lcore 25 as core 1 on socket 0
EAL: Detected lcore 26 as core 2 on socket 0
EAL: Detected lcore 27 as core 3 on socket 0
EAL: Detected lcore 28 as core 4 on socket 0
EAL: Detected lcore 29 as core 5 on socket 0
EAL: Detected lcore 30 as core 6 on socket 0
EAL: Detected lcore 31 as core 7 on socket 0
EAL: Setting up hugepage memory...
EAL: Ask a virtual area of 0x400000000 bytes
EAL: Virtual area found at 0x7f4740000000 (size = 0x400000000)
EAL: Requesting 16 pages of size 1024MB from socket 0
EAL: WARNING: Cannot mmap /dev/hpet! The TSC will be used instead.
EAL: Master core 8 is ready (tid=75cd2800)
EAL: Core 9 is ready (tid=74d0e700)
EAL: Core 12 is ready (tid=6bfff700)
EAL: Core 11 is ready (tid=73d0c700)
EAL: Core 27 is ready (tid=6b7fe700)
EAL: Core 29 is ready (tid=6a7fc700)
EAL: Core 24 is ready (tid=71d08700)
EAL: Core 25 is ready (tid=71507700)
EAL: Core 13 is ready (tid=7350b700)
EAL: Core 28 is ready (tid=6affd700)
EAL: Core 30 is ready (tid=69ffb700)
EAL: Core 31 is ready (tid=697fa700)
EAL: Core 26 is ready (tid=70d06700)
EAL: Core 15 is ready (tid=72509700)
EAL: Core 14 is ready (tid=72d0a700)
EAL: Core 10 is ready (tid=7450d700)
EAL: probe driver: 8086:10d3 rte_em_pmd
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: unbind kernel driver /sys/bus/pci/devices/0000:84:00.0/driver/unbind
EAL: bind PCI device 0000:84:00.0
EAL: Device bound
EAL: map PCI resource for device 0000:84:00.0
EAL: PCI memory mapped at 0x7f4b75c6e000
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: unbind kernel driver /sys/bus/pci/devices/0000:84:00.1/driver/unbind
EAL: bind PCI device 0000:84:00.1
EAL: Device bound
EAL: map PCI resource for device 0000:84:00.1
EAL: PCI memory mapped at 0x7f4b75c4e000
Interactive-mode selected
Configuring Port 0
PMD: Disable RSC
PMD: Saved register RXCSUM:3000
Configuring Port 1
PMD: Disable RSC
PMD: Saved register RXCSUM:3000
Checking link statuses...
Port 0 Link Up - speed 10000 Mbps - full-duplex
Port 1 Link Up - speed 10000 Mbps - full-duplex
Done
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd>
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=64
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 395534 RX-dropped: 0 RX-total: 395534
Bad-ipcsum: 0 Bad-l4csum: 0
TX-packets: 396814 TX-dropped: 0 TX-total: 396814
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 396814 RX-dropped: 0 RX-total: 396814
Bad-ipcsum: 0 Bad-l4csum: 0
TX-packets: 395534 TX-dropped: 0 TX-total: 395534
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 792348 RX-dropped: 0 RX-total: 792348
TX-packets: 792348 TX-dropped: 0 TX-total: 792348
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 --rxfreet=128 -i
[sudo] password for bmbenson:
EAL: coremask set to ff00ff00
EAL: Detected lcore 8 as core 0 on socket 0
EAL: Detected lcore 9 as core 1 on socket 0
EAL: Detected lcore 10 as core 2 on socket 0
EAL: Detected lcore 11 as core 3 on socket 0
EAL: Detected lcore 12 as core 4 on socket 0
EAL: Detected lcore 13 as core 5 on socket 0
EAL: Detected lcore 14 as core 6 on socket 0
EAL: Detected lcore 15 as core 7 on socket 0
EAL: Detected lcore 24 as core 0 on socket 0
EAL: Detected lcore 25 as core 1 on socket 0
EAL: Detected lcore 26 as core 2 on socket 0
EAL: Detected lcore 27 as core 3 on socket 0
EAL: Detected lcore 28 as core 4 on socket 0
EAL: Detected lcore 29 as core 5 on socket 0
EAL: Detected lcore 30 as core 6 on socket 0
EAL: Detected lcore 31 as core 7 on socket 0
EAL: Setting up hugepage memory...
EAL: Ask a virtual area of 0x400000000 bytes
EAL: Virtual area found at 0x7f9f40000000 (size = 0x400000000)
EAL: Requesting 16 pages of size 1024MB from socket 0
EAL: WARNING: Cannot mmap /dev/hpet! The TSC will be used instead.
EAL: Master core 8 is ready (tid=4d24b800)
EAL: Core 9 is ready (tid=4c287700)
EAL: Core 10 is ready (tid=4ba86700)
EAL: Core 14 is ready (tid=3ffff700)
EAL: Core 25 is ready (tid=49a82700)
EAL: Core 29 is ready (tid=377fe700)
EAL: Core 30 is ready (tid=36ffd700)
EAL: Core 15 is ready (tid=3f7fe700)
EAL: Core 26 is ready (tid=49281700)
EAL: Core 27 is ready (tid=48a80700)
EAL: Core 13 is ready (tid=4a283700)
EAL: Core 31 is ready (tid=3e7fc700)
EAL: Core 11 is ready (tid=4b285700)
EAL: Core 12 is ready (tid=4aa84700)
EAL: Core 28 is ready (tid=37fff700)
EAL: Core 24 is ready (tid=3effd700)
EAL: probe driver: 8086:10d3 rte_em_pmd
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: unbind kernel driver /sys/bus/pci/devices/0000:84:00.0/driver/unbind
EAL: bind PCI device 0000:84:00.0
EAL: Device bound
EAL: map PCI resource for device 0000:84:00.0
EAL: PCI memory mapped at 0x7fa34d1e7000
EAL: probe driver: 8086:10fb rte_ixgbe_pmd
EAL: unbind kernel driver /sys/bus/pci/devices/0000:84:00.1/driver/unbind
EAL: bind PCI device 0000:84:00.1
EAL: Device bound
EAL: map PCI resource for device 0000:84:00.1
EAL: PCI memory mapped at 0x7fa34d1c7000
Interactive-mode selected
Configuring Port 0
PMD: Disable RSC
PMD: Saved register RXCSUM:3000
Configuring Port 1
PMD: Disable RSC
PMD: Saved register RXCSUM:3000
Checking link statuses...
Port 0 Link Up - speed 10000 Mbps - full-duplex
Port 1 Link Up - speed 10000 Mbps - full-duplex
Done
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=128
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 372239 RX-dropped: 0 RX-total: 372239
Bad-ipcsum: 0 Bad-l4csum: 0
TX-packets: 375310 TX-dropped: 0 TX-total: 375310
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 375310 RX-dropped: 0 RX-total: 375310
Bad-ipcsum: 0 Bad-l4csum: 0
TX-packets: 372239 TX-dropped: 0 TX-total: 372239
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 747549 RX-dropped: 0 RX-total: 747549
TX-packets: 747549 TX-dropped: 0 TX-total: 747549
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Done.
________________________________________
From: dev [dev-bounces@dpdk.org] on behalf of Benson, Bryan
Sent: Wednesday, November 06, 2013 7:09 PM
To: dev@dpdk.org
Subject: Re: [dpdk-dev] RX checksum offloading
All,
The receive checksum issue seems to be caused by using a RX_FREE_THRESH value that is 32 or larger, as validated by the test-pmd application.
I used 2 different packet types - bad IP checksum sent to port 0 and bad tcp checksum to port 1. The way I was sending the packets did not vary between the various tests.
Below is a brief summary of the testing - additional gory text is attached.
0, 8, 16, 24, 28, 30, 31 are okay.
Values above 32 are not, as tested with 32, 64 and 128.
I will continue researching this - The version I used to test this is the vanilla version of DPDK 1.3, but with the RSC disable patch applied (helps when there are many ACKs).
Thanks,
Bryan Benson
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 -i
... <text removed>
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=0
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 490511 RX-dropped: 0 RX-total: 490511
Bad-ipcsum: 490496 Bad-l4csum: 0
TX-packets: 488720 TX-dropped: 0 TX-total: 488720
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 488804 RX-dropped: 0 RX-total: 488804
Bad-ipcsum: 0 Bad-l4csum: 488704
TX-packets: 490511 TX-dropped: 0 TX-total: 490511
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 979315 RX-dropped: 0 RX-total: 979315
TX-packets: 979231 TX-dropped: 0 TX-total: 979231
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Done.
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 --rxfreet=32 -i
... <text removed>
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=32
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 378894 RX-dropped: 0 RX-total: 378894
Bad-ipcsum: 0 Bad-l4csum: 0
TX-packets: 381197 TX-dropped: 0 TX-total: 381197
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 381197 RX-dropped: 0 RX-total: 381197
Bad-ipcsum: 0 Bad-l4csum: 0
TX-packets: 378894 TX-dropped: 0 TX-total: 378894
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 760091 RX-dropped: 0 RX-total: 760091
TX-packets: 760091 TX-dropped: 0 TX-total: 760091
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [dpdk-dev] RX checksum offloading
2013-11-07 3:44 ` Benson, Bryan
@ 2013-11-07 9:06 ` Thomas Monjalon
2013-11-07 11:44 ` Thomas Monjalon
0 siblings, 1 reply; 8+ messages in thread
From: Thomas Monjalon @ 2013-11-07 9:06 UTC (permalink / raw)
To: Benson, Bryan; +Cc: dev
07/11/2013 04:44, Benson, Bryan :
> RX queues=1 - RX desc=1024 - RX free threshold=16
> ---------------------- Forward statistics for port 0
> RX-total: 543761 Bad-ipcsum: 543558 Bad-l4csum: 0
> ---------------------- Forward statistics for port 1
> RX-total: 542226 Bad-ipcsum: 0 Bad-l4csum: 542005
>
> RX queues=1 - RX desc=1024 - RX free threshold=32
> ---------------------- Forward statistics for port 0
> RX-total: 378894 Bad-ipcsum: 0 Bad-l4csum: 0
> ---------------------- Forward statistics for port 1
> RX-total: 381197 Bad-ipcsum: 0 Bad-l4csum: 0
Excellent report, thank you !
We need to fix it now :)
--
Thomas
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [dpdk-dev] RX checksum offloading
2013-11-07 9:06 ` Thomas Monjalon
@ 2013-11-07 11:44 ` Thomas Monjalon
2013-11-07 21:53 ` Benson, Bryan
0 siblings, 1 reply; 8+ messages in thread
From: Thomas Monjalon @ 2013-11-07 11:44 UTC (permalink / raw)
To: Benson, Bryan; +Cc: dev
07/11/2013 10:06, Thomas Monjalon :
> 07/11/2013 04:44, Benson, Bryan :
> > RX queues=1 - RX desc=1024 - RX free threshold=16
> >
> > ---------------------- Forward statistics for port 0
> >
> > RX-total: 543761 Bad-ipcsum: 543558 Bad-l4csum: 0
> >
> > ---------------------- Forward statistics for port 1
> >
> > RX-total: 542226 Bad-ipcsum: 0 Bad-l4csum: 542005
> >
> > RX queues=1 - RX desc=1024 - RX free threshold=32
> >
> > ---------------------- Forward statistics for port 0
> >
> > RX-total: 378894 Bad-ipcsum: 0 Bad-l4csum: 0
> >
> > ---------------------- Forward statistics for port 1
> >
> > RX-total: 381197 Bad-ipcsum: 0 Bad-l4csum: 0
>
> Excellent report, thank you !
>
> We need to fix it now :)
LiuFeng had seen this issue with additonal comments:
http://www.dpdk.org/ml/archives/dev/2013-September/000529.html
--
Thomas
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [dpdk-dev] RX checksum offloading
2013-11-07 11:44 ` Thomas Monjalon
@ 2013-11-07 21:53 ` Benson, Bryan
0 siblings, 0 replies; 8+ messages in thread
From: Benson, Bryan @ 2013-11-07 21:53 UTC (permalink / raw)
To: dev
All,
below is the validation of the submitted patch - I used the default rx free thresh (0) and 64 & it now works for both cases.
Thank you!
Bryan Benson
-- Validation --
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 -i
... <Text Removed> ...
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=0
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 505103 RX-dropped: 0 RX-total: 505103
Bad-ipcsum: 505088 Bad-l4csum: 0
TX-packets: 508688 TX-dropped: 0 TX-total: 508688
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 508944 RX-dropped: 0 RX-total: 508944
Bad-ipcsum: 0 Bad-l4csum: 508672
TX-packets: 505103 TX-dropped: 0 TX-total: 505103
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 1014047 RX-dropped: 0 RX-total: 1014047
TX-packets: 1013791 TX-dropped: 0 TX-total: 1013791
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Done.
testpmd> quit
[bmbenson]~/1.3.1.1/DPDK% sudo ./x86_64-default-linuxapp-gcc/app/testpmd -c 0xFF00FF00 -n 4 -b 0000:06:00.0 -- --portmask=0x3 --nb-cores=2 --enable-rx-cksum --disable-hw-vlan --disable-rss --crc-strip --rxd=1024 --txd=1024 --rxfreet=64 -i
... <Text Removed> ...
testpmd> set fwd csum
Set csum packet forwarding mode
testpmd> start
csum packet forwarding - CRC stripping enabled - packets/burst=16
nb forwarding cores=2 - nb forwarding ports=2
RX queues=1 - RX desc=1024 - RX free threshold=64
RX threshold registers: pthresh=8 hthresh=8 wthresh=4
TX queues=1 - TX desc=1024 - TX free threshold=0
TX threshold registers: pthresh=36 hthresh=0 wthresh=0
TX RS bit threshold=0 - TXQ flags=0x0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...
---------------------- Forward statistics for port 0 ----------------------
RX-packets: 314382 RX-dropped: 0 RX-total: 314382
Bad-ipcsum: 314368 Bad-l4csum: 0
TX-packets: 317453 TX-dropped: 0 TX-total: 317453
----------------------------------------------------------------------------
---------------------- Forward statistics for port 1 ----------------------
RX-packets: 317492 RX-dropped: 0 RX-total: 317492
Bad-ipcsum: 0 Bad-l4csum: 317440
TX-packets: 314382 TX-dropped: 0 TX-total: 314382
----------------------------------------------------------------------------
+++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
RX-packets: 631874 RX-dropped: 0 RX-total: 631874
TX-packets: 631835 TX-dropped: 0 TX-total: 631835
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
________________________________________
From: Thomas Monjalon [thomas.monjalon@6wind.com]
Sent: Thursday, November 07, 2013 3:44 AM
To: Benson, Bryan
Cc: dev@dpdk.org; LiuFeng
Subject: Re: [dpdk-dev] RX checksum offloading
07/11/2013 10:06, Thomas Monjalon :
> 07/11/2013 04:44, Benson, Bryan :
> > RX queues=1 - RX desc=1024 - RX free threshold=16
> >
> > ---------------------- Forward statistics for port 0
> >
> > RX-total: 543761 Bad-ipcsum: 543558 Bad-l4csum: 0
> >
> > ---------------------- Forward statistics for port 1
> >
> > RX-total: 542226 Bad-ipcsum: 0 Bad-l4csum: 542005
> >
> > RX queues=1 - RX desc=1024 - RX free threshold=32
> >
> > ---------------------- Forward statistics for port 0
> >
> > RX-total: 378894 Bad-ipcsum: 0 Bad-l4csum: 0
> >
> > ---------------------- Forward statistics for port 1
> >
> > RX-total: 381197 Bad-ipcsum: 0 Bad-l4csum: 0
>
> Excellent report, thank you !
>
> We need to fix it now :)
LiuFeng had seen this issue with additonal comments:
http://www.dpdk.org/ml/archives/dev/2013-September/000529.html
--
Thomas
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [dpdk-dev] RX checksum offloading
2013-11-07 21:50 Benson, Bryan
@ 2013-11-08 10:27 ` Thomas Monjalon
0 siblings, 0 replies; 8+ messages in thread
From: Thomas Monjalon @ 2013-11-08 10:27 UTC (permalink / raw)
To: Benson, Bryan; +Cc: dev
07/11/2013 22:50, Benson, Bryan :
> I have prepared a patch for the issue. If it is not in the correct format,
> please advise.
First of all, thank you for the patch.
My comments on the format:
1) The content type is quoted-printable. So it cannot be applied wihtout
modifications.
Please use git-send-email to send patches.
2) Please set a shorter title and longer explanation in the commit log.
Guidelines should be written on the web site. Probably coming soon.
--
Thomas
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [dpdk-dev] RX checksum offloading
@ 2013-11-07 21:50 Benson, Bryan
2013-11-08 10:27 ` Thomas Monjalon
0 siblings, 1 reply; 8+ messages in thread
From: Benson, Bryan @ 2013-11-07 21:50 UTC (permalink / raw)
To: dev
All,
I have prepared a patch for the issue. If it is not in the correct format, please advise. I also changed the array to be uint32_t to be consistent with the other functions that pull the status flags.
== PATCH BEGIN ==
>From 2ab73e88d92044c1d840f896d87e9a8cbcf29ce4 Mon Sep 17 00:00:00 2001
From: Bryan Benson <bmbenson@amazon.com>
Date: Thu, 7 Nov 2013 21:38:57 +0000
Subject: [PATCH] Do not unset the status bits in the scan_hw_ring function
when counting the number of done descriptors.
---
inteldpdk/DPDK/lib/librte_pmd_ixgbe/ixgbe_rxtx.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/inteldpdk/DPDK/lib/librte_pmd_ixgbe/ixgbe_rxtx.c b/inteldpdk/DPDK/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
index 2be9979..c4abf9a 100755
--- a/inteldpdk/DPDK/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
+++ b/inteldpdk/DPDK/lib/librte_pmd_ixgbe/ixgbe_rxtx.c
@@ -1037,7 +1037,8 @@ ixgbe_rx_scan_hw_ring(struct igb_rx_queue *rxq)
struct igb_rx_entry *rxep;
struct rte_mbuf *mb;
uint16_t pkt_len;
- int s[LOOK_AHEAD], nb_dd;
+ uint32_t s[LOOK_AHEAD];
+ int nb_dd;
int i, j, nb_rx = 0;
@@ -1060,12 +1061,12 @@ ixgbe_rx_scan_hw_ring(struct igb_rx_queue *rxq)
for (j = LOOK_AHEAD-1; j >= 0; --j)
s[j] = rxdp[j].wb.upper.status_error;
- /* Clear everything but the status bits (LSB) */
- for (j = 0; j < LOOK_AHEAD; ++j)
- s[j] &= IXGBE_RXDADV_STAT_DD;
+ nb_dd = 0;
+ /* add to nd_dd when the status bit is set (LSB) */
+ for (j = 0; j < LOOK_AHEAD; ++j) {
+ nb_dd += s[j] & IXGBE_RXDADV_STAT_DD;
+ }
- /* Compute how many status bits were set */
- nb_dd = s[0]+s[1]+s[2]+s[3]+s[4]+s[5]+s[6]+s[7];
nb_rx += nb_dd;
/* Translate descriptor info to mbuf format */
--
1.7.9.5
== PATCH END ==
A validation text email will follow.
Thank you,
Bryan Benson
Amazon Web Services
________________________________________
From: Thomas Monjalon [thomas.monjalon@6wind.com]
Sent: Thursday, November 07, 2013 3:44 AM
To: Benson, Bryan
Cc: dev@dpdk.org; LiuFeng
Subject: Re: [dpdk-dev] RX checksum offloading
07/11/2013 10:06, Thomas Monjalon :
> 07/11/2013 04:44, Benson, Bryan :
> > RX queues=1 - RX desc=1024 - RX free threshold=16
> >
> > ---------------------- Forward statistics for port 0
> >
> > RX-total: 543761 Bad-ipcsum: 543558 Bad-l4csum: 0
> >
> > ---------------------- Forward statistics for port 1
> >
> > RX-total: 542226 Bad-ipcsum: 0 Bad-l4csum: 542005
> >
> > RX queues=1 - RX desc=1024 - RX free threshold=32
> >
> > ---------------------- Forward statistics for port 0
> >
> > RX-total: 378894 Bad-ipcsum: 0 Bad-l4csum: 0
> >
> > ---------------------- Forward statistics for port 1
> >
> > RX-total: 381197 Bad-ipcsum: 0 Bad-l4csum: 0
>
> Excellent report, thank you !
>
> We need to fix it now :)
LiuFeng had seen this issue with additonal comments:
http://www.dpdk.org/ml/archives/dev/2013-September/000529.html
--
Thomas
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2013-11-08 10:27 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-11-07 0:00 [dpdk-dev] RX checksum offloading Benson, Bryan
2013-11-07 3:09 ` Benson, Bryan
2013-11-07 3:44 ` Benson, Bryan
2013-11-07 9:06 ` Thomas Monjalon
2013-11-07 11:44 ` Thomas Monjalon
2013-11-07 21:53 ` Benson, Bryan
2013-11-07 21:50 Benson, Bryan
2013-11-08 10:27 ` Thomas Monjalon
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).