Re: [PATCH v3] app/testpmd: fix incorrect queues state of secondary process

["lihuisong (C)" <lihuisong@huawei.com>]

在 2022/9/6 22:53, Peng Zhang 写道:
> Primary process could set up queues state correctly when starting port,
> while secondary process not. Under multi-process scenario, "stream_init"
> function would get wrong queues state for secondary process.
>
> This commit is to get queues state from ethdev which is located in
> shared memory.
>
> Fixes: 3c4426db54fc ("app/testpmd: do not poll stopped queues")
> Cc: stable@dpdk.org
>
> Signed-off-by: Peng Zhang <peng1x.zhang@intel.com>
>
> ---
>   v3:
>   - Modify the parameter of rx or tx queue state array
>   v2:
>   - Change the way of getting secondary process queues states
> ---
>   app/test-pmd/testpmd.c | 22 +++++++++++++++++++---
>   1 file changed, 19 insertions(+), 3 deletions(-)
>
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
> index addcbcac85..977ec4fa28 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -75,6 +75,8 @@
>   
>   #include "testpmd.h"
>   
> +#include <ethdev_driver.h>
This header file is internal, app shouldn't use it.
> +
>   #ifndef MAP_HUGETLB
>   /* FreeBSD may not have MAP_HUGETLB (in fact, it probably doesn't) */
>   #define HUGE_FLAG (0x40000)
> @@ -2402,10 +2404,24 @@ start_packet_forwarding(int with_tx_first)
>   	if (!pkt_fwd_shared_rxq_check())
>   		return;
>   
> -	if (stream_init != NULL)
> -		for (i = 0; i < cur_fwd_config.nb_fwd_streams; i++)
> -			stream_init(fwd_streams[i]);
> +	if (stream_init != NULL) {
> +		for (i = 0; i < cur_fwd_config.nb_fwd_streams; i++) {
> +			if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
> +				struct fwd_stream *fs = fwd_streams[i];
> +				struct rte_eth_dev_data *dev_rx_data, *dev_tx_data;
> +
> +				dev_rx_data = (&rte_eth_devices[fs->rx_port])->data;
> +				dev_tx_data = (&rte_eth_devices[fs->tx_port])->data;
> +
> +				uint8_t rx_state = dev_rx_data->rx_queue_state[fs->rx_queue];
> +				ports[fs->rx_port].rxq[fs->rx_queue].state = rx_state;
> +				uint8_t tx_state = dev_tx_data->tx_queue_state[fs->tx_queue];
> +				ports[fs->tx_port].txq[fs->tx_queue].state = tx_state;
> +			}
>   
> +			stream_init(fwd_streams[i]);
> +		}
> +	}
>   
Suggest that an API in ethdev layer can be encapsulated to obtain the 
device Rx/Tx queue state.
Both primary and secondary process get or set queue state by this API.
>   	port_fwd_begin = cur_fwd_config.fwd_eng->port_fwd_begin;
>   	if (port_fwd_begin != NULL) {
>   		for (i = 0; i < cur_fwd_config.nb_fwd_ports; i++) {