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: luned? 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
