[dpdk-dev] how to get driver name for a given port ID

[Montorsi, Francesco]

Hi, 
Just as reference for other DPDK users: the solution to the problem is simple:

rte_eth_dev_info_get (uint8_t port_id, struct rte_eth_dev_info *dev_info)

returns a dev_info structure that contains "driver_name"...

HTH,
Francesco



> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Montorsi,
> Francesco
> Sent: lunedì 26 ottobre 2015 15:18
> To: dev at dpdk.org
> Subject: [dpdk-dev] how to get driver name for a given port ID
> 
> 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