Deadlock problem repro

Trying to investigate a problem where rte_eth_tx_burst seems to be entering a deadlocked state.

This repository is based on the L2 forwarding example.

It can be run with CLI arguments similar to what we use for NFlambda:

sudo build/deadlock-test -l 3,2,1 --master-lcore=1 -w af:00.0,mprq_en=1,rxqs_min_mprq=1,txq_mpw_en=1,txq_max_inline_len=128 -n 4 --socket-mem=0,8192

See also:

• This 2017 mailing list discussion
• rte_eth_tx_queue_setup