Hello, On Thu, Jun 6, 2024 at 11:32 PM Nandini Rangaswamy <nandini.rangasw...@broadcom.com> wrote: > I tried compiling the testpmd with DPDK netvsc for openwrt by setting > CONFIG_RTE_LIBRTE_NETVSC_PMD=y . > > However, when I check ldd testpmd, it does not show any of the dpdk shared > libraries including net_netvsc linked to testpmd binary. > ldd dpdk-testpmd > linux-vdso.so.1 (0x00007ffca1467000) > libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007ffb08134000) > libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007ffb0812f000) > libelf.so.1 => /usr/lib/x86_64-linux-gnu/libelf.so.1 > (0x00007ffb08111000) > libpcap.so.1 => not found > libmlx5.so.1 => /usr/lib/x86_64-linux-gnu/libmlx5.so.1 > (0x00007ffb08093000) > libibverbs.so.1 => /usr/lib/x86_64-linux-gnu/libibverbs.so.1 > (0x00007ffb0806d000) > libIPSec_MB.so.1 => not found > libcrypto.so.3 => /usr/lib/x86_64-linux-gnu/libcrypto.so.3 > (0x00007ffb07c29000) > libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 > (0x00007ffb07c09000) > libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 > (0x00007ffb07c04000) > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007ffb079db000) > /lib64/ld-linux-x86-64.so.2 (0x00007ffb097c1000) > libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007ffb079bd000) > libnl-route-3.so.200 => > /usr/lib/x86_64-linux-gnu/libnl-route-3.so.200 (0x00007ffb0793a000) > libnl-3.so.200 => /lib/x86_64-linux-gnu/libnl-3.so.200 > (0x00007ffb07917000)
I am not sure what openwrt does wrt DPDK compilation, yet I can give some hints. DPDK drivers are, by default, statically linked into dpdk binaries like testpmd, so netvsc would not show up in this listing you tried. On the other hand, if using dynamically linked drivers, testpmd is not linked to them. Instead, those shared libraries are found automatically (for a DPDK global install) or via the -d EAL option. Then EAL loads those drivers via dlopen(). If you want to ensure that a specific driver is linked in, you may inspect meson output (which lists enabled drivers), or have a try with dpdk-pmd-info.py /path/to/dpdk-testpmd. HTH, -- David Marchand
