Dear DPDK experts.
Thank you very much for your excellent work and great contributions.
I have a question about distributor library source code.
/dpdk/lib/librte_distributor/rte_distributor.c
In rte_distributor_process(),
rte_distributor_process() { mbufs[] -> d->backlog -> d->bufs }
=> lcore_worker() reads d->bufs (with 0x0 empty flag packet) and sets
response bit(RTE_DISTRIB_GET_BUF) of a received packet (d->bufs).
When the first packet arrives at rte_distributor_process(), the match value is
0.
And it is not enqueued in d->backlog nor in d->bufs because the match
value equals 0 .
The received first packet is never enqueued to d->bufs until the
lcore_worker() returns the packet bufs (with the response
bit(RTE_DISTRIB_GET_BUF) of bufs packet is set).
Since the lcore_worker cannot return packet if it cannot receive packet (Since
the lcore_worker only reads the received packet with 0x0 flag).
It seems to be a deadlock.
Thus. first packet is never processed, I think.
Would you check this?
Am I wrong?
Does the lcore_worker() return packet even though it does not have received
packet?
Thank you very much.
Sincerely Yours,
Ick-Sung Choi.
