[dpdk-dev] [PATCHv2 0/5] ethdev: add new API to retrieve RX/TX queue information
Walukiewicz, Miroslaw
Miroslaw.Walukiewicz at intel.com
Thu Jun 18 15:56:52 CEST 2015
Yes, really I need a high performance function - it is especially useful on TX path.
Which queue query function are you talking here to be enhanced?
Mirek
> -----Original Message-----
> From: Richardson, Bruce
> Sent: Thursday, June 18, 2015 3:39 PM
> To: Walukiewicz, Miroslaw
> Cc: Ananyev, Konstantin; dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCHv2 0/5] ethdev: add new API to retrieve RX/TX
> queue information
>
> On Thu, Jun 18, 2015 at 01:30:33PM +0000, Walukiewicz, Miroslaw wrote:
> > Konstantin,
> >
> > Is there a possibility to read information about available space in NIC queue
> for TX.
> >
> > It is quite easy to compute (or even available directly) and very useful
> especially for application sending multi-descriptor packets like TCP TSO.
> >
> > Now there is no access to such information and the transmit packet function
> must be called to
> > be sure that there is available space.
> >
> > Mirek
> >
>
> Hi Mirek,
>
> I'm not sure this function is the right place for such a query. It seems that
> a function like you require needs to be used on the datapath, while this API
> is not planned to be high-performance. I think that it might be better to
> add an equivalent function to the existing RX descriptor querying function.
>
> /Bruce
>
> > > -----Original Message-----
> > > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Konstantin
> Ananyev
> > > Sent: Thursday, June 18, 2015 3:19 PM
> > > To: dev at dpdk.org
> > > Subject: [dpdk-dev] [PATCHv2 0/5] ethdev: add new API to retrieve RX/TX
> > > queue information
> > >
> > > Add the ability for the upper layer to query RX/TX queue information.
> > > Right now supported for:
> > > ixgbe, i40e, e1000 PMDs.
> > >
> > > Konstantin Ananyev (5):
> > > ethdev: add new API to retrieve RX/TX queue information
> > > i40e: add support for eth_(rxq|txq)_info_get
> > > ixgbe: add support for eth_(rxq|txq)_info_get
> > > e1000: add support for eth_(rxq|txq)_info_get
> > > testpmd: add new command to display RX/TX queue information
> > >
> > > app/test-pmd/cmdline.c | 48 +++++++++++++++++++++++++
> > > app/test-pmd/config.c | 67
> > > ++++++++++++++++++++++++++++++++++
> > > app/test-pmd/testpmd.h | 2 ++
> > > drivers/net/e1000/e1000_ethdev.h | 12 +++++++
> > > drivers/net/e1000/em_ethdev.c | 2 ++
> > > drivers/net/e1000/em_rxtx.c | 38 ++++++++++++++++++++
> > > drivers/net/e1000/igb_ethdev.c | 4 +++
> > > drivers/net/e1000/igb_rxtx.c | 36 +++++++++++++++++++
> > > drivers/net/i40e/i40e_ethdev.c | 2 ++
> > > drivers/net/i40e/i40e_ethdev.h | 5 +++
> > > drivers/net/i40e/i40e_rxtx.c | 42 ++++++++++++++++++++++
> > > drivers/net/ixgbe/ixgbe_ethdev.c | 4 +++
> > > drivers/net/ixgbe/ixgbe_ethdev.h | 6 ++++
> > > drivers/net/ixgbe/ixgbe_rxtx.c | 42 ++++++++++++++++++++++
> > > lib/librte_ether/rte_ethdev.c | 54 ++++++++++++++++++++++++++++
> > > lib/librte_ether/rte_ethdev.h | 77
> > > +++++++++++++++++++++++++++++++++++++++-
> > > 16 files changed, 440 insertions(+), 1 deletion(-)
> > >
> > > --
> > > 1.8.5.3
> >
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