Re: [dpdk-users] xl710 NIC doesn't receive 1518 bytes packets

[Kyle Larose <klarose@sandvine.com>]

Did you set the mtu on the bond port? It has separate configuration IIRC.

> -----Original Message-----
> From: users [mailto:users-bounces@dpdk.org] On Behalf Of Alex Kiselev
> Sent: Wednesday, January 24, 2018 8:51 AM
> To: users
> Subject: Re: [dpdk-users] xl710 NIC doesn't receive 1518 bytes packets
> 
> The issue with receiving 1518 byte packets is half resolved. It was an MTU
> problem. I moved rte_eth_dev_set_mtu() before the rte_dev_dev_start and it
> helped. Thanks to Alex _ <asb.tyum@gmail.com>.
> So, 1518 packets now are successfully sent and received.
> 
> But, now I've got the same problem with the bonding driver. I created a bond
> port with four i40e slave ports and place it in the LACP mode.
> And the bond port doesn't receive 1518 bytes packets.
> 
> Please, help me to resolve the issue.
> 
> 2018-01-24 0:44 GMT+03:00 Alex Kiselev <kiselev99@gmail.com>:
> > Hi.
> >
> > It seems that xl710 NIC doesn't receive 1518 (maximum MTU size 1500 +
> > dot1q ethernet header
> > 18 bytes) bytes packets. And there is no such problem when I use x520 NIC.
> >
> > I am sending ipv4 ICMP ping packets and I am sure that packets go out
> > from the port on the switch to which my application is connected. This
> > is the tcpdump output from the mirror port:
> >
> > 00:17:52.644171 f8:32:e4:72:61:1b > 68:05:ca:30:61:80, ethertype
> > 802.1Q (0x8100), length 1518: vlan 10, p 0, ethertype IPv4, (tos 0x0,
> > ttl 64, id 630, offset 0, flags [DF], proto ICMP (1), length 1500)
> >     1.0.0.2 > 1.0.0.1: ICMP echo request, id 5386, seq 7, length 1480
> >
> > And I if send 1514 bytes packets everything is also ok
> >
> > h7 ~ # ip netns exec bs1 ping -s 1468 1.0.0.1 PING 1.0.0.1 (1.0.0.1)
> > 1468(1496) bytes of data.
> > 1476 bytes from 1.0.0.1: icmp_seq=1 ttl=64 time=0.935 ms
> >
> > tcpdump on mirror switch port for 1514 bytes (ping 1468):
> >
> > 00:28:15.890543 f8:32:e4:72:61:1b > 68:05:ca:30:61:80, ethertype
> > 802.1Q (0x8100), length 1514: vlan 10, p 0, ethertype IPv4, (tos 0x0,
> > ttl 64, id 22101, offset 0, flags [DF], proto ICMP (1), length 1496)
> >     1.0.0.2 > 1.0.0.1: ICMP echo request, id 5389, seq 1, length 1476
> > 00:28:15.890548 68:05:ca:30:61:80 > f8:32:e4:72:61:1b, ethertype
> > 802.1Q (0x8100), length 1514: vlan 10, p 0, ethertype IPv4, (tos 0x0,
> > ttl 64, id 22101, offset 0, flags [DF], proto ICMP (1), length 1496)
> >     1.0.0.1 > 1.0.0.2: ICMP echo reply, id 5389, seq 1, length 1476
> >
> > I’ve tried to use rte_eth_dev_set_mtu() with different parameters but
> > nothing has changed.
> >
> > Have I missed something to configure?
> >
> > Thanks.
> >
> > --
> > Alex Kiselev
> 
> 
> 
> --
> --
> Kiselev Alexander