Hi, 2014-10-01 13:57, mukawa at igel.co.jp: > 'null PMD' is a driver of the virtual device particulary designed to measure > performance of DPDK PMDs. When an application call rx, null PMD just allocates > mbufs and returns those. Also tx, the PMD just frees mbufs. > > The PMD has following options. > - size: specify packe size allocated by RX. Default packet size is 64. > - copy: specify 1 or 0 to enable or disable copy while RX and TX. > Default value is 0(disbaled). > This option is used for emulating more realistic data transfer. > Copy size is equal to packet size. > > To use the PMD, enable CONFIG_RTE_BUILD_SHARED_LIB in config file. Then > compile the PMD as shared library. The library can be linked using '-d' > option when an application invokes. > > Here is an example. > $ sudo ./testpmd -c f -n 4 -d librte_pmd_null.so \ > --vdev 'eth_null0' --vdev 'eth_null1' -- -i > > If testpmd is compiled with CONFIG_RTE_BUILD_SHARED_LIB, it may need to > specify more libraries using '-d' option. > > Signed-off-by: Tetsuya Mukawa <mukawa at igel.co.jp>
This patch is still pending because nobody reviewed it. -- Thomas
