On Fri, Jul 22, 2016 at 2:31 PM, Take Ceara <dumitru.ceara at gmail.com> wrote: > Hi Beilei, > > On Fri, Jul 22, 2016 at 11:04 AM, Xing, Beilei <beilei.xing at intel.com> > wrote: >> Hi Ceara, >> >>> -----Original Message----- >>> From: Take Ceara [mailto:dumitru.ceara at gmail.com] >>> Sent: Thursday, July 21, 2016 6:58 PM >>> To: Xing, Beilei <beilei.xing at intel.com> >>> Cc: Zhang, Helin <helin.zhang at intel.com>; Wu, Jingjing >>> <jingjing.wu at intel.com>; dev at dpdk.org >>> Subject: Re: [dpdk-dev] [dpdk-users] RSS Hash not working for XL710/X710 >>> NICs for some RX mbuf sizes >>> >>> >>> Following your testpmd example run I managed to replicate the problem on >>> my dpdk 16.04 setup like this: >>> >>> I have two X710 adapters connected back to back: >>> $ ./tools/dpdk_nic_bind.py -s >>> >>> Network devices using DPDK-compatible driver >>> ============================================ >>> 0000:01:00.3 'Ethernet Controller X710 for 10GbE SFP+' drv=igb_uio unused= >>> 0000:81:00.3 'Ethernet Controller X710 for 10GbE SFP+' drv=igb_uio unused= >>> >>> The firmware of the two adapters is up to date with the latest >>> version: 5.04 (f5.0.40043 a1.5 n5.04 e24cd) >>> >>> I run testpmd with mbuf-size 1152 and txpktsize 1024 such that upon receival >>> the whole mbuf (except headroom) is filled. >>> I enabled RX IP checksum in hw and RX RSS hashing for UDP. >>> With test-pmd forward mode "rxonly" and verbose 1 I see that incoming >>> packets have PKT_RX_RSS_HASH set but the hash value is 0. >>> >>> ./testpmd -c ffff1 -n 4 -w 0000:01:00.3 -w 0000:81:00.3 -- -i >>> --coremask=0xffff0 --rxq=16 --txq=16 --mbuf-size 1152 --txpkts 1024 -- >>> enable-rx-cksum --rss-udp [...] >>> testpmd> set verbose 1 >>> Change verbose level from 0 to 1 >>> testpmd> set fwd rxonly >>> Set rxonly packet forwarding mode >>> testpmd> start tx_first >>> rxonly packet forwarding - CRC stripping disabled - packets/burst=32 >>> nb forwarding cores=16 - nb forwarding ports=2 >>> RX queues=16 - RX desc=128 - RX free threshold=32 >>> RX threshold registers: pthresh=8 hthresh=8 wthresh=0 >>> TX queues=16 - TX desc=512 - TX free threshold=32 >>> TX threshold registers: pthresh=32 hthresh=0 wthresh=0 >>> TX RS bit threshold=32 - TXQ flags=0xf01 port 0/queue 1: received 32 >>> packets >>> src=68:05:CA:38:6D:63 - dst=02:00:00:00:00:01 - type=0x0800 - >>> length=1024 - nb_segs=1 - RSS hash=0x0 - RSS queue=0x1 - (outer) L2 >>> type: ETHER - (outer) L3 type: IPV4_EXT_UNKNOWN - (outer) L4 type: UDP >>> - Tunnel type: Unknown - Inner L2 type: Unknown - Inner L3 type: >>> Unknown - Inner L4 type: Unknown >>> - Receive queue=0x1 >>> PKT_RX_RSS_HASH >>> src=68:05:CA:38:6D:63 - dst=02:00:00:00:00:01 - type=0x0800 - >>> length=1024 - nb_segs=1 - RSS hash=0x0 - RSS queue=0x1 - (outer) L2 >>> type: ETHER - (outer) L3 type: IPV4_EXT_UNKNOWN - (outer) L4 type: UDP >>> - Tunnel type: Unknown - Inner L2 type: Unknown - Inner L3 type: >>> Unknown - Inner L4 type: Unknown >>> - Receive queue=0x1 >>> PKT_RX_RSS_HASH >> >> What's the source ip address and destination ip address of the packet you >> sent to port 0? Could you try to change ip address or port number to observe >> if hash value changes? I remember I saw hash value was 0 before, but with >> different ip address, there'll be different hash values. > > I was using the test-pmd "txonly" implementation which sends fixed UDP > packets from 192.168.0.1:1024 -> 192.168.0.2:1024. > > I changed the test-pmd tx_only code so that it sends traffic with > incremental destination IP: 192.168.0.1:1024 -> [192.168.0.2, > 192.168.0.12]:1024 > I also dumped the source and destination IPs in the "rxonly" > pkt_burst_receive function. > Then I see that packets are indeed sent to different queues but the > mbuf->hash.rss value is still 0. > > ./testpmd -c ffff1 -n 4 -w 0000:01:00.3 -w 0000:81:00.3 -- -i > --coremask=0xffff0 --rxq=16 --txq=16 --mbuf-size 1152 --txpkts 1024 > --enable-rx-cksum --rss-udp > > [...] > > - Receive queue=0xf > PKT_RX_RSS_HASH > src=68:05:CA:38:6D:63 - dst=02:00:00:00:00:01 - type=0x0800 - > length=1024 - nb_segs=1 - RSS queue=0xa - (outer) L2 type: ETHER - > (outer) L3 type: IPV4_EXT_UNKNOWN SIP=C0A80001 DIP=C0A80006 - (outer) > L4 type: UDP - Tunnel type: Unknown - RSS hash=0x0 - Inner L2 type: > Unknown - RSS queue=0xf - RSS queue=0x7 - (outer) L2 type: ETHER - > (outer) L3 type: IPV4_EXT_UNKNOWN SIP=C0A80001 DIP=C0A80007 - (outer) > L4 type: UDP - Tunnel type: Unknown - Inner L2 type: Unknown - Inner > L3 type: Unknown - Inner L4 type: Unknown > - Receive queue=0x7 > PKT_RX_RSS_HASH > src=68:05:CA:38:6D:63 - dst=02:00:00:00:00:01 - (outer) L2 type: > ETHER - (outer) L3 type: IPV4_EXT_UNKNOWN SIP=C0A80001 DIP=C0A80009 - > type=0x0800 - length=1024 - nb_segs=1 - Inner L3 type: Unknown - Inner > L4 type: Unknown - RSS hash=0x0 - (outer) L4 type: UDP - Tunnel type: > Unknown - Inner L2 type: Unknown - Inner L3 type: Unknown - RSS > queue=0x7 - Inner L4 type: Unknown > > [...] > > testpmd> stop > ------- Forward Stats for RX Port= 0/Queue= 0 -> TX Port= 1/Queue= 0 ------- > RX-packets: 0 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue= 1 -> TX Port= 1/Queue= 1 ------- > RX-packets: 59 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue= 2 -> TX Port= 1/Queue= 2 ------- > RX-packets: 48 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue= 3 -> TX Port= 1/Queue= 3 ------- > RX-packets: 0 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue= 4 -> TX Port= 1/Queue= 4 ------- > RX-packets: 59 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue= 5 -> TX Port= 1/Queue= 5 ------- > RX-packets: 0 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue= 6 -> TX Port= 1/Queue= 6 ------- > RX-packets: 0 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue= 7 -> TX Port= 1/Queue= 7 ------- > RX-packets: 48 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue= 8 -> TX Port= 1/Queue= 8 ------- > RX-packets: 0 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue= 9 -> TX Port= 1/Queue= 9 ------- > RX-packets: 59 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue=10 -> TX Port= 1/Queue=10 ------- > RX-packets: 48 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue=11 -> TX Port= 1/Queue=11 ------- > RX-packets: 0 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue=12 -> TX Port= 1/Queue=12 ------- > RX-packets: 59 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue=13 -> TX Port= 1/Queue=13 ------- > RX-packets: 0 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue=14 -> TX Port= 1/Queue=14 ------- > RX-packets: 0 TX-packets: 32 TX-dropped: 0 > ------- Forward Stats for RX Port= 0/Queue=15 -> TX Port= 1/Queue=15 ------- > RX-packets: 48 TX-packets: 32 TX-dropped: 0 > ---------------------- Forward statistics for port 0 ---------------------- > RX-packets: 428 RX-dropped: 84 RX-total: 512 > TX-packets: 0 TX-dropped: 0 TX-total: 0 > ---------------------------------------------------------------------------- > > ---------------------- Forward statistics for port 1 ---------------------- > RX-packets: 0 RX-dropped: 0 RX-total: 0 > TX-packets: 512 TX-dropped: 0 TX-total: 512 > ---------------------------------------------------------------------------- > > +++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++ > RX-packets: 428 RX-dropped: 84 RX-total: 512 > TX-packets: 512 TX-dropped: 0 TX-total: 512 > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > I checked all the RSS hash values for all the 10 different incoming > streams and they're all 0. Also, the fact that the traffic is actually > distributed seems to suggest that RSS itself is working but the mbuf > hash field is (I guess) either not written or corrupted. > >> >>> >>> If I use a different mbuf-size, for example 2048, everything is fine: >>> >>> ./testpmd -c ffff1 -n 4 -w 0000:01:00.3 -w 0000:81:00.3 -- -i >>> --coremask=0xffff0 --rxq=16 --txq=16 --mbuf-size 2048 --txpkts 1024 -- >>> enable-rx-cksum --rss-udp [...] >>> testpmd> set verbose 1 >>> Change verbose level from 0 to 1 >>> testpmd> set fwd rxonly >>> Set rxonly packet forwarding mode >>> testpmd> start tx_first >>> rxonly packet forwarding - CRC stripping disabled - packets/burst=32 >>> nb forwarding cores=16 - nb forwarding ports=2 >>> RX queues=16 - RX desc=128 - RX free threshold=32 >>> RX threshold registers: pthresh=8 hthresh=8 wthresh=0 >>> TX queues=16 - TX desc=512 - TX free threshold=32 >>> TX threshold registers: pthresh=32 hthresh=0 wthresh=0 >>> TX RS bit threshold=32 - TXQ flags=0xf01 port 0/queue 1: received 32 >>> packets >>> src=68:05:CA:38:6D:63 - dst=02:00:00:00:00:01 - type=0x0800 - >>> length=1024 - nb_segs=1 - RSS hash=0x5263c3f2 - RSS queue=0x1 - >>> (outer) L2 type: ETHER - (outer) L3 type: IPV4_EXT_UNKNOWN - (outer) >>> L4 type: UDP - Tunnel type: Unknown - Inner L2 type: Unknown - Inner >>> L3 type: Unknown - Inner L4 type: Unknown >>> - Receive queue=0x1 >>> PKT_RX_RSS_HASH >>> >> >> Did you send the same packet as before to port 0? >>
Sorry, I forgot to reply to this question. Yes, the packet is identical. >>> Another weird thing I noticed is when I run test-pmd without --enable-rx- >>> cksum (which is the default mode) then the RSS flag doesn get set at all. >>> Instead the PKT_RX_FDIR flag gets set. This happens even though fdir_mode >>> is set to RTE_FDIR_MODE_NONE in the device >>> configuration: >>> >>> ./testpmd -c ffff1 -n 4 -w 0000:01:00.3 -w 0000:81:00.3 -- -i >>> --coremask=0xffff0 --rxq=16 --txq=16 --mbuf-size 1152 --txpkts 1024 --rss- >>> udp [...] >>> testpmd> set verbose 1 >>> Change verbose level from 0 to 1 >>> testpmd> set fwd rxonly >>> Set rxonly packet forwarding mode >>> testpmd> start tx_first >>> rxonly packet forwarding - CRC stripping disabled - packets/burst=32 >>> nb forwarding cores=16 - nb forwarding ports=2 >>> RX queues=16 - RX desc=128 - RX free threshold=32 >>> RX threshold registers: pthresh=8 hthresh=8 wthresh=0 >>> TX queues=16 - TX desc=512 - TX free threshold=32 >>> TX threshold registers: pthresh=32 hthresh=0 wthresh=0 >>> TX RS bit threshold=32 - TXQ flags=0xf01 port 0/queue 1: received 16 >>> packets >>> src=68:05:CA:38:6D:63 - dst=02:00:00:00:00:01 - type=0x0800 - >>> length=1024 - nb_segs=2 - FDIR matched hash=0xc3f2 ID=0x5263 Unknown >>> packet type >>> - Receive queue=0x1 >>> PKT_RX_FDIR >>> src=68:05:CA:38:6D:63 - dst=02:00:00:00:00:01 - type=0x0800 - >>> length=1024 - nb_segs=2 - FDIR matched hash=0xc3f2 ID=0x5263 Unknown >>> packet type >>> - Receive queue=0x1 >>> PKT_RX_FDIR >>> >> >> For this issue, I think following patch can solve your problem, please apply >> this patch. >> http://dpdk.org/dev/patchwork/patch/13593/ >> > > I tried to apply it directly on 16.04 but it can't be applied. I see > it's been applied to dpdk-next-net/rel_16_07. Do you happen to have > one that would work on the latest stable 16.04 release? > > Thanks, > Dumitru > >> Beilei >> >>> Please let me know if there's more debug info that might be of interest in >>> troubleshooting the RSS=0 issue. >>> >>> Thanks, >>> Dumitru >>> >>> > /Beilei >>> > >>> >> Thanks, >>> >> Dumitru >>> >> -- Dumitru Ceara
