Hi Remy, > -----Original Message----- > From: dev [mailto:[email protected]] On Behalf Of Remy Horton > Sent: Wednesday, April 4, 2018 6:18 PM > To: [email protected] > Cc: Mcnamara, John <[email protected]>; Lu, Wenzhuo > <[email protected]>; Wu, Jingjing <[email protected]>; Zhang, Qi Z > <[email protected]>; Xing, Beilei <[email protected]>; Shreyansh Jain > <[email protected]>; Thomas Monjalon <[email protected]> > Subject: [dpdk-dev] [PATCH v3 1/4] ethdev: add support for PMD-tuned Tx/Rx > parameters > > The optimal values of several transmission & reception related parameters, > such > as burst sizes, descriptor ring sizes, and number of queues, varies between > different network interface devices. This patch allows individual PMDs to > specify > preferred parameter values. > > Signed-off-by: Remy Horton <[email protected]> > --- > doc/guides/rel_notes/deprecation.rst | 13 ---------- > doc/guides/rel_notes/release_18_05.rst | 5 ++++ > lib/librte_ether/rte_ethdev.c | 44 > +++++++++++++++++++++++++++------- > lib/librte_ether/rte_ethdev.h | 25 +++++++++++++++++++ > 4 files changed, 65 insertions(+), 22 deletions(-) > > diff --git a/doc/guides/rel_notes/deprecation.rst > b/doc/guides/rel_notes/deprecation.rst > index 0c696f7..920df6b 100644 > --- a/doc/guides/rel_notes/deprecation.rst > +++ b/doc/guides/rel_notes/deprecation.rst > @@ -115,19 +115,6 @@ Deprecation Notices > The new API add rss_level field to ``rte_eth_rss_conf`` to enable a choice > of RSS hash calculation on outer or inner header of tunneled packet. > > -* ethdev: Currently, if the rte_eth_rx_burst() function returns a value > less > - than *nb_pkts*, the application will assume that no more packets are > present. > - Some of the hw queue based hardware can only support smaller burst for RX > - and TX and thus break the expectation of the rx_burst API. Similar is the > - case for TX burst as well as ring sizes. ``rte_eth_dev_info`` will be added > - with following new parameters so as to support semantics for drivers to > - define a preferred size for Rx/Tx burst and rings. > - > - - Member ``struct preferred_size`` would be added to enclose all preferred > - size to be fetched from driver/implementation. > - - Members ``uint16_t rx_burst``, ``uint16_t tx_burst``, ``uint16_t > rx_ring``, > - and ``uint16_t tx_ring`` would be added to ``struct preferred_size``. > - > * ethdev: A work is being planned for 18.05 to expose VF port representors > as a mean to perform control and data path operation on the different VFs. > As VF representor is an ethdev port, new fields are needed in order to map > diff
API and ABI changes should be documented in release notes. Thanks, Pablo
