2022-10-28 09:45 (UTC+0000), Robert Hable: > Hello, > > I am trying to build a static library based on the skeleton example. My > problem is when calling rte_eth_dev_count_avail() I always receive 0 in the > static library. When I start the skeleton example app as a regular exe file, > then it returns 2. > What could be the reason that rte_eth_dev_count_avail() returns different > values depending on if it is an exe application or a static library? > > rte_eal_init() is called in both applications with the default parameters. > Both processes are running under the same administrator user. > > I am using Windows Server 2022 with a Mellanox ConnectX-4 on DPDK V > 22.11.0-rc0. > > Kind regards, > Robert Hable >
Hi Robert, Are you building DPDK as static libraries? Shared build is currently non-functional on Windows. If so, are you linking PMD libraries (librte_common_mlx5, librte_net_mlx5) to the application that is using your static library? If relevant PMD libraries are not linked, HW will not be discovered (same for mempools BTW). It is irrelevant from where rte_eth_dev_count_avail() is called, but please check that in both cases it is done after rte_eal_init().
