[dpdk-dev] RFC: i40e xmit path HW limitation

2015-07-30 Thread Avi Kivity
On 07/30/2015 08:01 PM, Stephen Hemminger wrote: > On Thu, 30 Jul 2015 19:50:27 +0300 > Vlad Zolotarov wrote: > >> >> On 07/30/15 19:20, Avi Kivity wrote: >>> >>> On 07/30/2015 07:17 PM, Stephen Hemminger wrote: On Thu, 30 Jul 2015 17:57:33 +0300 Vlad Zolotarov wrote: > Hi, Kon

[dpdk-dev] RFC: i40e xmit path HW limitation

2015-07-30 Thread Vlad Zolotarov
On 07/30/15 20:01, Stephen Hemminger wrote: > On Thu, 30 Jul 2015 19:50:27 +0300 > Vlad Zolotarov wrote: > >> >> On 07/30/15 19:20, Avi Kivity wrote: >>> >>> On 07/30/2015 07:17 PM, Stephen Hemminger wrote: On Thu, 30 Jul 2015 17:57:33 +0300 Vlad Zolotarov wrote: > Hi, Konsta

[dpdk-dev] RFC: i40e xmit path HW limitation

2015-07-30 Thread Vlad Zolotarov
On 07/30/15 19:20, Avi Kivity wrote: > > > On 07/30/2015 07:17 PM, Stephen Hemminger wrote: >> On Thu, 30 Jul 2015 17:57:33 +0300 >> Vlad Zolotarov wrote: >> >>> Hi, Konstantin, Helin, >>> there is a documented limitation of xl710 controllers (i40e driver) >>> which is not handled in any way by

[dpdk-dev] RFC: i40e xmit path HW limitation

2015-07-30 Thread Avi Kivity
On 07/30/2015 07:17 PM, Stephen Hemminger wrote: > On Thu, 30 Jul 2015 17:57:33 +0300 > Vlad Zolotarov wrote: > >> Hi, Konstantin, Helin, >> there is a documented limitation of xl710 controllers (i40e driver) >> which is not handled in any way by a DPDK driver. >> From the datasheet chapter 8.

[dpdk-dev] RFC: i40e xmit path HW limitation

2015-07-30 Thread Vlad Zolotarov
Hi, Konstantin, Helin, there is a documented limitation of xl710 controllers (i40e driver) which is not handled in any way by a DPDK driver. From the datasheet chapter 8.4.1: "? A single transmit packet may span up to 8 buffers (up to 8 data descriptors per packet including both the header and

[dpdk-dev] RFC: i40e xmit path HW limitation

2015-07-30 Thread Stephen Hemminger
On Thu, 30 Jul 2015 19:50:27 +0300 Vlad Zolotarov wrote: > > > On 07/30/15 19:20, Avi Kivity wrote: > > > > > > On 07/30/2015 07:17 PM, Stephen Hemminger wrote: > >> On Thu, 30 Jul 2015 17:57:33 +0300 > >> Vlad Zolotarov wrote: > >> > >>> Hi, Konstantin, Helin, > >>> there is a documented limi

[dpdk-dev] RFC: i40e xmit path HW limitation

2015-07-30 Thread Stephen Hemminger
On Thu, 30 Jul 2015 17:57:33 +0300 Vlad Zolotarov wrote: > Hi, Konstantin, Helin, > there is a documented limitation of xl710 controllers (i40e driver) > which is not handled in any way by a DPDK driver. > From the datasheet chapter 8.4.1: > > "? A single transmit packet may span up to 8 buffe