NOT see any rocev2 packet

[forsakening]

Hi all，i run redis-benchmark with libvma，and expect the communication of redis using rocev2，here is my command: Client： D_PRELOAD=/usr/lib64/libvma.so redis-benchmark -h 10.39.30.220 -p 6379 -c 1 -n 1000000 -t get Server：LD_PRELOAD=/usr/lib64/libvma.so redis-server /etc/redis.conf My HCA is mlx5，and show_gids，here is the output： mlx5_2 1 3 0000:0000:0000:0000:0000:ffff:0a27:1ee7 10.39.30.231 v2 ens8

the redis communication is ok， but i can not see any rocev2 packets，seem like the libvma use something like cx5 blueflame，and transport with ethernet packet。

[igor-ivanov]

Hello @forsakening, Could you try following way as https://hub.docker.com/r/mellanox/tcpdump-rdma

[igor-ivanov]

@forsakening can the issue be closed?

[forsakening]

@igor-ivanov hi，i am using tcpdump-rdma，but the capture packet is all raw tcp packet，not rocev2 packet

[igor-ivanov]

so redis uses socket tcp connections and you see tcp packets.

[forsakening]

@igor-ivanov ahhh，so libvma only use rdma verbs，but the underlay packet is raw Ethernet packet， not the rocev2 udp packet ？

[igor-ivanov]

libvma accelerates socket based application. See left branch on the picture.

[forsakening]

@igor-ivanov yeah i know libvma call the rdma verbs ，but my test is under cx5 nic，and the packet is raw ethernet，not the rocev2 packet . in my opinion, libvma call rdma verbs , the packet shoule be rocev2 (under cx5).

[igor-ivanov]

no, vma forms tcp/udp packets and send them

[forsakening]

@igor-ivanov thank you very much