I encounter some errors when running a dpdk-based application. I find the error occurs when invoking rte_eth_dev_configure() function provided by dpdk library. The error code is -22. However, I want the application to show more debug information so that I can quickly focus on the error part.
I did RTFM and modified $RTE_SDK/build/.config. I turned RTE_LIBRTE_ETHDEV_DEBUG to be y. But It didn't work. Where does rte_vlog() function put log messages?
Would you like to help me? Any suggestion is appreciated!
You should also change the default log level, otherwise all the debug messages will be compiled out during the compilation, i.e.:
RTE_LOG_LEVEL=RTE_LOG_DEBUG
RTE_LIBRTE_ETHDEV_DEBUG=y
Please also have a look at EXTRA_CFLAGS. You might also want to add the debug symbols and disable optimizations, i.e.:
make EXTRA_CFLAGS="-O0 -g" ...