02/03/2022 03:33, Chengwen Feng:
> Start main and secondary process:
> ./dpdk-testpmd -a BDF0 -a BDF1 --proc-type=auto -- -i --rxq=8 --txq=8
> --num-procs=2 --proc-id=0
> ./dpdk-testpmd -a BDF0 -a BDF1 --proc-type=auto -- -i --rxq=8 --txq=8
> --num-procs=2 --proc-id=1
> Execute following command in main process:
> port stop 0
> port detach 0
> Execute following command in secondary process:
> set fwd mac
> start
> The secondary process will display:
> Invalid port_id=0
> telcore 19 called rx_pkt_burst for not ready port 0
> stpmd> 8: [/lib64/libc.so.6(+0xdf600) [0xffff9e1dc600]]
> 7: [/lib64/libpthread.so.0(+0x7c48) [0xffff9e28ac48]]
> 6: [/usr/app/testpmd(eal_thread_loop+0x2c4) [0xb23574]]
> 5: [/usr/app/testpmd() [0x9c21d8]]
> 4: [/usr/app/testpmd() [0x9c2108]]
> 3: [/usr/app/testpmd() [0x9b6cf0]]
> 2: [/usr/app/testpmd() [0xad8620]]
> 1: [/usr/app/testpmd(rte_dump_stack+0x20) [0xb1a130]]
>
> The root cause it that the secondary process has not removed invalid
> ports when it processes RTE_ETH_EVENT_DESTROY event.
Why the ports are not removed?
> This patch adds a delay remove invalid ports invoke when process the
> RTE_ETH_EVENT_DESTROY event.
Why do we need this delay?
[...]
> +static void
> +remove_invalid_ports_callback(void *arg)
> +{
> + RTE_SET_USED(arg);
> + remove_invalid_ports();
> +}
[...]
> case RTE_ETH_EVENT_DESTROY:
> ports[port_id].port_status = RTE_PORT_CLOSED;
> printf("Port %u is closed\n", port_id);
> + if (rte_eal_alarm_set(100000, remove_invalid_ports_callback,
> + (void *)(intptr_t)port_id))
> + fprintf(stderr,
> + "Could not set up deferred device released\n");
> break;
