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From: "Montorsi, Francesco" <fmontorsi@empirix.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Subject: [dpdk-dev] how to get driver name for a given port ID
Date: Mon, 26 Oct 2015 14:17:36 +0000	[thread overview]
Message-ID: <5796b5e2f5d14e9ba1299aa942d6c7f0@bilemail1.empirix.com> (raw)

Hi all,

Is there an API to retrieve the driver name for a certain port ID before calling rte_eth_dev_configure()?

My use case is: I'm trying to call rte_eth_dev_configure() with nb_rx_q=4 and found that this works for ixgbe driver but it doesn't for "rte_em_pmd" (1Gbps device):

ERROR HwEmulDPDKPort::init() rte_eth_dev_configure: err=-22, port=0: Unknown error -22
EAL: PCI device 0000:03:00.0 on NUMA socket 0
EAL:   remove driver: 8086:105e rte_em_pmd
EAL:   PCI memory unmapped at 0x7feb40000000
EAL:   PCI memory unmapped at 0x7feb40020000

So, for those devices I want to use nb_rx_q=1...

Thanks,

Francesco Montorsi

             reply	other threads:[~2015-10-26 14:17 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-26 14:17 Montorsi, Francesco [this message]
2015-10-27  9:59 ` Montorsi, Francesco
2015-10-27 10:26   ` Andriy Berestovskyy

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