>>> What is the point of adding when i >= RTE_ETHDEV_QUEUE_STAT_CNTRS ?
struct rte_eth_stats {
...
uint64_t q_opackets[RTE_ETHDEV_QUEUE_STAT_CNTRS]
...
}
As there can be more queues (nb_tx) then RTE_ETHDEV_QUEUE_STAT_CNTRS (16)
and struct rte_eth_stats eth_stats is allocated statically,
there is need to check so it does not write garbage somewhere.
>>> Besides, q_errors[] is for reception errors.
I will fix that, meanwhile could q_errors[] be renamed to q_ierrors[]? Also
could there be a way to publish output errors per queue, for example
q_oerrors[]?
On Mon, Mar 4, 2019 at 12:35 PM David Marchand <david.march...@redhat.com>
wrote:
>
> On Fri, Mar 1, 2019 at 3:38 PM Rastislav Cernay <cer...@netcope.com>
> wrote:
>
>> diff --git a/drivers/net/nfb/nfb_stats.c b/drivers/net/nfb/nfb_stats.c
>> new file mode 100644
>> index 0000000..ffc27a5
>> --- /dev/null
>> +++ b/drivers/net/nfb/nfb_stats.c
>> @@ -0,0 +1,78 @@
>> +/* SPDX-License-Identifier: BSD-3-Clause
>> + * Copyright(c) 2018 Cesnet
>> + * Copyright(c) 2018 Netcope Technologies, a.s. <i...@netcope.com>
>> + * All rights reserved.
>> + */
>> +
>> +#include "nfb_stats.h"
>> +#include "nfb.h"
>> +
>> +int
>> +nfb_eth_stats_get(struct rte_eth_dev *dev,
>> + struct rte_eth_stats *stats)
>> +{
>> + uint16_t i;
>> + uint16_t nb_rx = dev->data->nb_rx_queues;
>> + uint16_t nb_tx = dev->data->nb_tx_queues;
>> + uint64_t rx_total = 0;
>> + uint64_t tx_total = 0;
>> + uint64_t tx_err_total = 0;
>> + uint64_t rx_total_bytes = 0;
>> + uint64_t tx_total_bytes = 0;
>> +
>> + struct ndp_rx_queue *rx_queue = *((struct ndp_rx_queue **)
>> + dev->data->rx_queues);
>> + struct ndp_tx_queue *tx_queue = *((struct ndp_tx_queue **)
>> + dev->data->tx_queues);
>> +
>> + for (i = 0; i < nb_rx; i++) {
>> + if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
>> + stats->q_ipackets[i] = rx_queue[i].rx_pkts;
>> + stats->q_ibytes[i] = rx_queue[i].rx_bytes;
>> + }
>> + rx_total += stats->q_ipackets[i];
>> + rx_total_bytes += stats->q_ibytes[i];
>> + }
>>
>
> What is the point of adding when i >= RTE_ETHDEV_QUEUE_STAT_CNTRS ?
> Hopefully, ethdev passes a zero'd structure, but still I find it confusing.
>
>
>
>> +
>> + for (i = 0; i < nb_tx; i++) {
>> + if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
>> + stats->q_opackets[i] = tx_queue[i].tx_pkts;
>> + stats->q_obytes[i] = tx_queue[i].tx_bytes;
>> + stats->q_errors[i] = tx_queue[i].err_pkts;
>> + }
>> + tx_total += stats->q_opackets[i];
>> + tx_total_bytes += stats->q_obytes[i];
>> + tx_err_total += stats->q_errors[i];
>> + }
>>
>
> Idem.
> Besides, q_errors[] is for reception errors.
>
> +
>> + stats->ipackets = rx_total;
>> + stats->opackets = tx_total;
>> + stats->ibytes = rx_total_bytes;
>> + stats->obytes = tx_total_bytes;
>> + stats->oerrors = tx_err_total;
>> + return 0;
>> +}
>>
>>
> --
> David Marchand
>
