Hi Vpp-Dev, Need your help in understanding one the Memif related issue that we are facing in 18.10. This code has been working in 18.01. As soon as we moved to 18.10, we are started seeing this issue.
When our graph node tries to send a message over Memif interface, the send is failing with a reason code "no free tx slots" vpp# show node counters Count Node Reason 81 memif0/0-tx no free tx slots Following is the "show memif" output for reference. vpp# show memif sockets id listener filename 0 yes (1) /run/vpp/memif.sock interface memif0/0 remote-name "Ctrlr" remote-interface "ctrlr_connection" socket-id 0 id 0 mode ip flags admin-up connected listener-fd 39 conn-fd 38 num-s2m-rings 2 num-m2s-rings 2 buffer-size 0 num-regions 2 region 0 size 131584 fd 40 region 1 size 12288000 fd 41 master-to-slave ring 0: region 0 offset 65792 ring-size 2048 int-fd 44 head 2068 tail 20 flags 0x0000 interrupts 20 master-to-slave ring 1: region 0 offset 98688 ring-size 2048 int-fd 45 head 0 tail 0 flags 0x0000 interrupts 82 slave-to-master ring 0: region 0 offset 0 ring-size 2048 int-fd 42 head 102 tail 102 flags 0x0001 interrupts 0 slave-to-master ring 1: region 0 offset 32896 ring-size 2048 int-fd 43 head 0 tail 0 flags 0x0001 interrupts 0 We are creating the memif interface with the following command vppctl create interface memif id 0 master ring-size 16 buffer-size 10240 rx-queues 2 tx-queues 2 mode ip Please let us know if something changed in 18.10 that we have to change the way we use memif. Appreciate your inputs on this. Thanks & Regards, Satish
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