[dpdk-users] Can anyone offer some ideas on using XL710 NIC for tx pkts

[Stephen Hemminger]

On Tue, 26 Nov 2019 10:26:18 -0800
Jun Gan <geminijun at gmail.com> wrote:

> Have you ever tried to wait a while after initialization before sending the
> packet?
> 
> I had an issue that it needs as long as ~30 seconds before sending out
> packet correctly.
> 
> Don't know why yet.
> 
> 
> On Tue, Nov 26, 2019 at 12:28 AM Sunyi LIu <sunnysunny128 at 163.com> wrote:
> 
> > hi ,
> >    I'm using XL710 with i40e driver , receiveing packets works well but
> > sending packets fails. I pick rte_eth_tx_burst api  for sending some
> > packets , rte_eth_tx_burst returns with successful sending count ,but there
> > is actually no packets sending out from the NIC (captured nothig and no tx
> > counters). The same thing can be successful using 82599 NIC but it will
> > fail using I40E . Is there any thing special I need for sending packets by
> > XL710?
> >   My environment is as :
> >   CentOS7.2
> >   DPDK 18.11
> >   XL710 for 40GbE QSFP+ rev 02 NIC
> > Thanks .
> > BR
> > sunny  
> 
> 
> 

Check that link is up (with rte_eth_link_get).