* [dpdk-users] Set mtu value
@ 2016-08-21 21:27 Victor Detoni
2016-08-22 5:27 ` Stephen Hemminger
0 siblings, 1 reply; 4+ messages in thread
From: Victor Detoni @ 2016-08-21 21:27 UTC (permalink / raw)
To: users
Hello,
I'm trying to use rte_eth_dev_set_mtu function to change mtu value. When I
use the code below the function returns -ENOTSUP. Someone knows what's
happening? I can change mtu value with "ifconfig".
uint16_t mtu;
ret = rte_eth_dev_set_mtu(ported,mtu);
if (ret == 0)
printf("Port %d: MTU set to %d\n",portid, ,mtu);
else if (ret == -ENOTSUP)
printf("Port %d: Operation not supported\n",portid);
else
printf("Port %d: Error setting MTU\n",portid);
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [dpdk-users] Set mtu value
2016-08-21 21:27 [dpdk-users] Set mtu value Victor Detoni
@ 2016-08-22 5:27 ` Stephen Hemminger
2016-08-22 13:12 ` Victor Detoni
0 siblings, 1 reply; 4+ messages in thread
From: Stephen Hemminger @ 2016-08-22 5:27 UTC (permalink / raw)
To: Victor Detoni; +Cc: users
only some device drivers support changing MTU via the change API.
For the rest the application has to stop the device, configure new
settings, and start.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [dpdk-users] Set mtu value
2016-08-22 5:27 ` Stephen Hemminger
@ 2016-08-22 13:12 ` Victor Detoni
2016-08-30 1:55 ` Victor Detoni
0 siblings, 1 reply; 4+ messages in thread
From: Victor Detoni @ 2016-08-22 13:12 UTC (permalink / raw)
To: Stephen Hemminger; +Cc: users
Stephen, thank you for your answer.
When you say "stop the device, configure new settings, and start", you mean
use these functions rte_eth_dev_stop and rte_eth_dev_start?
On Mon, Aug 22, 2016 at 2:27 AM, Stephen Hemminger <
stephen@networkplumber.org> wrote:
> only some device drivers support changing MTU via the change API.
> For the rest the application has to stop the device, configure new
> settings, and start.
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [dpdk-users] Set mtu value
2016-08-22 13:12 ` Victor Detoni
@ 2016-08-30 1:55 ` Victor Detoni
0 siblings, 0 replies; 4+ messages in thread
From: Victor Detoni @ 2016-08-30 1:55 UTC (permalink / raw)
To: Stephen Hemminger; +Cc: users
Even using `ifconfig eth0 mtu 1000` it doesn't work. My dpdk api shows 1500
mtu value.
And when I try to use l3fwd api and settings --enable-jumbo --max-pkt-len
9000 for example, it doesn't work. it appears: Cause
rte_eth_tx_queue_setup: err-22, port=0
Any tips? I'm using Ubuntu 16.04 and VMXNET3.
thanks
On Mon, Aug 22, 2016 at 10:12 AM, Victor Detoni <victordetoni@gmail.com>
wrote:
> Stephen, thank you for your answer.
>
> When you say "stop the device, configure new settings, and start", you
> mean use these functions rte_eth_dev_stop and rte_eth_dev_start?
>
> On Mon, Aug 22, 2016 at 2:27 AM, Stephen Hemminger <
> stephen@networkplumber.org> wrote:
>
>> only some device drivers support changing MTU via the change API.
>> For the rest the application has to stop the device, configure new
>> settings, and start.
>>
>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-08-30 1:55 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-08-21 21:27 [dpdk-users] Set mtu value Victor Detoni
2016-08-22 5:27 ` Stephen Hemminger
2016-08-22 13:12 ` Victor Detoni
2016-08-30 1:55 ` Victor Detoni
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).