> -----Original Message----- > From: Tetsuya Mukawa [mailto:mukawa at igel.co.jp] > Sent: Monday, February 16, 2015 4:19 AM > To: dev at dpdk.org > Cc: Qiu, Michael; Iremonger, Bernard; Tetsuya Mukawa > Subject: [PATCH v8 1/2] librte_pmd_null: Add Null PMD > > Null PMD is a driver of the virtual device particularly 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(disabled). > 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 --no-flush-rx > > If testpmd is compiled with CONFIG_RTE_BUILD_SHARED_LIB, it may need to > specify more libraries > using '-d' option. > > v8: > - Fix Makefile and add version map file. > (Thanks to Qiu, Michael and Iremonger, Bernard) > v7: > - Add parameter checkings. > (Thanks to Iremonger, Bernard) > - Remove needless "__rte_unused". > v4: > - Fix memory leak. > (Thanks to Iremonger, Bernard) > > Signed-off-by: Tetsuya Mukawa <mukawa at igel.co.jp>
Acked-by: Bernard Iremonger <bernard.iremonger at intel.com>
