On Sun, Nov 15, 2020 at 8:48 AM Andy Duan wrote:
>
> From: Kegl Rohit Sent: Sunday, November 15, 2020 1:37 AM
> > On Sat, Nov 14, 2020 at 2:58 AM Andy Duan wrote:
> > >
> > > From: Kegl Rohit Sent: Friday, November 13, 2020
> > > 8:21 PM
> > &
On Sat, Nov 14, 2020 at 2:58 AM Andy Duan wrote:
>
> From: Kegl Rohit Sent: Friday, November 13, 2020 8:21 PM
> > On Fri, Nov 13, 2020 at 8:33 AM Kegl Rohit wrote:
> > >
> > > > What are the addresses of the ring entries?
> > > > I bet there is so
On Fri, Nov 13, 2020 at 8:33 AM Kegl Rohit wrote:
>
> > What are the addresses of the ring entries?
> > I bet there is something wrong with the cache coherency and/or
> > flushing.
> >
> > So the MAC hardware has done the write but (somewhere) it
> > isn
> What are the addresses of the ring entries?
> I bet there is something wrong with the cache coherency and/or
> flushing.
>
> So the MAC hardware has done the write but (somewhere) it
> isn't visible to the cpu for ages.
CMA memory is disabled in our kernel config.
So the descriptors allocated wi
On Thu, Nov 12, 2020 at 12:10 PM David Laight wrote:
>
> From: Eric Dumazet
> > Sent: 12 November 2020 10:42
> >
> > On 11/12/20 7:52 AM, Kegl Rohit wrote:
> > > On Wed, Nov 11, 2020 at 11:18 PM Fabio Estevam wrote:
> > >>
> > &g
On Thu, Nov 12, 2020 at 2:29 AM Andy Duan wrote:
>
> From: Kegl Rohit Sent: Wednesday, November 11, 2020
> 10:27 PM
> > Hello!
> >
> > We are using a imx6q platform.
> > The fec interface is used to receive a continuous stream of custom / raw
> > ethernet
On Wed, Nov 11, 2020 at 11:18 PM Fabio Estevam wrote:
>
> On Wed, Nov 11, 2020 at 11:27 AM Kegl Rohit wrote:
> >
> > Hello!
> >
> > We are using a imx6q platform.
> > The fec interface is used to receive a continuous stream of custom /
> > raw ether
On Wed, Nov 11, 2020 at 6:52 PM David Laight wrote:
>
> > On 11/11/20 3:27 PM, Kegl Rohit wrote:
> > > Hello!
> > >
> > > We are using a imx6q platform.
> > > The fec interface is used to receive a continuous stream of custom /
> > > raw eth
Hello!
We are using a imx6q platform.
The fec interface is used to receive a continuous stream of custom /
raw ethernet packets. The packet size is fixed ~132 bytes and they get
sent every 250µs.
While testing I observed spontaneous packet delays from time to time.
After digging down deeper I thi
nnection reliability (packet content, sequence, ...)?
On Thu, Jul 2, 2020 at 11:14 AM Andy Duan wrote:
>
> From: Kegl Rohit Sent: Thursday, July 2, 2020 3:39 PM
> > On Thu, Jul 2, 2020 at 6:18 AM Andy Duan wrote:
> > > That should ensure the whole area is not dirty.
> >
On Thu, Jul 2, 2020 at 6:18 AM Andy Duan wrote:
>
> From: Kegl Rohit Sent: Thursday, July 2, 2020 2:45 AM
> > fec_enet_copybreak(u32 length, ...) uses
> >
> > dma_sync_single_for_cpu(&fep->pdev->dev,
> > fec32_to_cpu(bdp->cbd_bufaddr), FEC_ENET_RX_FRSIZ
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