[dpdk-dev] [PATCH v14 2/7] ethdev: add mbuf RSS update as an offload
Pavan Nikhilesh Bhagavatula
pbhagavatula at marvell.com
Tue Oct 29 09:42:24 CET 2019
>On 10/29/19 8:03 AM, pbhagavatula at marvell.com wrote:
>> From: Pavan Nikhilesh <pbhagavatula at marvell.com>
>>
>> Add new Rx offload flag `DEV_RX_OFFLOAD_RSS_HASH` which can be
>used to
>> enable/disable PMDs write to `rte_mbuf::hash::rss`.
>> PMDs notify the validity of `rte_mbuf::hash:rss` to the applcation
>> by enabling `PKT_RX_RSS_HASH ` flag in `rte_mbuf::ol_flags`.
>>
>> Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
>> Reviewed-by: Andrew Rybchenko <arybchenko at solarflare.com>
>
>[snip]
>
>> diff --git a/lib/librte_ethdev/rte_ethdev.c
>b/lib/librte_ethdev/rte_ethdev.c
>> index 6ce8f5e75..fef1dbb61 100644
>
>[snip]
>
>> @@ -1303,6 +1304,16 @@ rte_eth_dev_configure(uint16_t port_id,
>uint16_t nb_rx_q, uint16_t nb_tx_q,
>> goto rollback;
>> }
>>
>> + /* Check if Rx*/
>> + if ((dev_conf->rxmode.mq_mode & ETH_MQ_RX_NONE) &&
>
>ETH_MQ_RX_NONE is 0 so above condition is always false.
My bad didn’t realize ETH_MQ_RX_NONE is 0, will fix in next version.
>It should be
>if ((dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) == 0 &&
>
>> + (dev_conf->rxmode.offloads &
>DEV_RX_OFFLOAD_RSS_HASH)) {
>> + RTE_ETHDEV_LOG(ERR,
>> + "Ethdev port_id=%u config invalid mq_mode %s
>with offloads %s\n",
>> + port_id, "ETH_MQ_RX_NONE",
>"DEV_RX_OFFLOAD_RSS_HASH");
>
>I think the error message is a bit misleading. It should be:
>
>"Ethdev port_id=%u config invalid mq_mode without RSS but %s
>offload is requested\n"
>
>rte_eth_dev_rx_offload_name(DEV_RX_OFFLOAD_RSS_HASH) should
>be used
>to log offload name.
>
>> + ret = -EINVAL;
>> + goto rollback;
>> + }
>> +
>> /*
>> * Setup new number of RX/TX queues and reconfigure device.
>> */
>
>[snip]
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