Hi Charlie,
2018-01-03 0:07 GMT+01:00 Charlie Smurthwaite :
> Hi Vincenzo,
>
>
>> I am using poll(), and I am not specifying NETMAP_NO_TX_POLL, and have
>> found that sometimes frames and sent only when the TX buffer is full, and
>> sometimes they are not sent at all. They are never sent as expec
Hi Vincenzo,
I am using poll(), and I am not specifying NETMAP_NO_TX_POLL, and have found
that sometimes frames and sent only when the TX buffer is full, and sometimes
they are not sent at all. They are never sent as expected on every invocation
of poll(). If I run ioctl(NIOCTXSYNC) manually,
2018-01-01 23:05 GMT+01:00 Charlie Smurthwaite :
>
> On 01/01/18 21:05, Vincenzo Maffione wrote:
>
>
>
> 2018-01-01 17:14 GMT+01:00 Charlie Smurthwaite :
>
>> Hi,
>>
>> Thank you for your reply. I was able to resolve this.
>>
>> 1) I do indeed open one FD per NIC
>> 2) I no longer specify nr_arg1,
On 01/01/18 21:05, Vincenzo Maffione wrote:
2018-01-01 17:14 GMT+01:00 Charlie Smurthwaite
mailto:charlie@atech.media>>:
Hi,
Thank you for your reply. I was able to resolve this.
1) I do indeed open one FD per NIC
2) I no longer specify nr_arg1, nr_arg2 nor nr_arg3. Instead I just verify th
2018-01-01 17:14 GMT+01:00 Charlie Smurthwaite :
> Hi,
>
> Thank you for your reply. I was able to resolve this.
>
> 1) I do indeed open one FD per NIC
> 2) I no longer specify nr_arg1, nr_arg2 nor nr_arg3. Instead I just verify
> that all NICs return with identical nr_arg2 so that the memory is s
Hi,
Thank you for your reply. I was able to resolve this.
1) I do indeed open one FD per NIC
2) I no longer specify nr_arg1, nr_arg2 nor nr_arg3. Instead I just
verify that all NICs return with identical nr_arg2 so that the memory is
shared between them.
3) I properly initialized my memory, my
Hi,
If you have 32 NICs you should open 32 netmap file descriptors, (and you
should not specify 64 in nr_arg1 or 256 in nr_arg3, this is for different
usecases). Also, since you want to do zercopy you must not specify a
separate memory area (nr_arg2), but use the same one.
You may want to use the
Hi,
To answer my own question, I have resolved this, there were seemingly 3
errors in my use of the API:
1) I did not initialize the req struct. Some uninitialized data were
being passed to the ioctl. I feel silly.
2) Values greater then 1 do not seem to be accepted by nr_arg2, setting
this to 1
Hi,
I'm just starting to use netmap and it is my intention to do zero-copy
forwarding of frames between a large number of NICs. I am using Intel
i350 (igb) on Linux. I therefore require a large memory area for rings
and buffers.
My calculation:
32 NICs * 2 rings (TX+RX) * 256 frames * 2048 bytes
