Hey VPP community,
anyone out there using TRex setup with rdma driver?
The setup works just fine on legacy DPDK drivers, as documented here
https://fd.io/docs/vpp/v2101/usecases/simpleperf/trex.html
Once switching over to rdma ( as advised for Mellanox cards) I get the TRex
warning that "Failed resolving dest MAC for default gateway" aka ARP resolve
failed.
My tested debugging:
- traces show that ARP resolution works just fine within VPP
- set same MAC address to rdma interface as the real MAC
- changing to mac-based TRex config ( xconnect aka l2fwd ) shows same issue,
but I can see VPP correctly forwarding
- it appears that the host blocks somehow the ARP response outbound ( rdma
security settings? Trusted flags missing ? )
existing working cfg for DPDK driver:
{quote}
set interface ip address HundredGigabitEthernet4b/0/0 10.10.1.1/24
set interface ip address HundredGigabitEthernet4b/0/1 10.10.2.1/24
set interface state HundredGigabitEthernet4b/0/0 up
set interface state HundredGigabitEthernet4b/0/1 up
ip route add 16.0.0.0/8 via 10.10.1.2
ip route add 48.0.0.0/8 via 10.10.2.2
{quote}
- vs - *failed rdma based* :
{quote}
create int rdma host-if ens3f0np0 name HundredGigabitEthernet4b/0/0
create int rdma host-if ens3f1np1 name HundredGigabitEthernet4b/0/1
# giving same MAC address as host NIC `ip link show` b8:ce:f6:01:XXXX
set interface mac address HundredGigabitEthernet4b/0/0 b8:ce:f6:01:XXXX
set interface mac address HundredGigabitEthernet4b/0/1 b8:ce:f6:01:XXXX
set interface ip address HundredGigabitEthernet4b/0/0 10.10.1.1/24
set interface ip address HundredGigabitEthernet4b/0/1 10.10.2.1/24
set interface state HundredGigabitEthernet4b/0/0 up
set interface state HundredGigabitEthernet4b/0/1 up
ip route add 16.0.0.0/8 via 10.10.1.2
ip route add 48.0.0.0/8 via 10.10.2.2
{quote}
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