From: "Montorsi, Francesco" <fmontorsi@empirix.com>
To: "Mcnamara, John" <john.mcnamara@intel.com>,
"Lu, Wenzhuo" <wenzhuo.lu@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] Accurate timestamps in received packets
Date: Mon, 12 Oct 2015 12:25:28 +0000 [thread overview]
Message-ID: <5b03ff2e2449490981c6106d606745be@bilemail1.empirix.com> (raw)
In-Reply-To: <B27915DBBA3421428155699D51E4CFE20237E68D@IRSMSX103.ger.corp.intel.com>
Hi John,
Thanks for your reply.
> -----Original Message-----
> From: Mcnamara, John [mailto:john.mcnamara@intel.com]
> AFAIK, timestamping of every packet isn't supported by ixgbe/i40e nics and I
> don't know about non-Intel nics. It was supported for some(?) igb nics and
> hence the patch you linked to. Also, there isn't any DPDK API to
> enable/disable it even if it is supported by the nic.
What a pity, that's a bad news for me.
Another question in case you know: AFAIUI ixgbe/i40e devices receive packets in burst/sequences. What's the timeout for flushing the receive queue?
In other words, if I send a single packet to the PHY of the NIC, after how much time will the Intel network controller will stop waiting for further packets (to put in the same "burst") and send that single packet to the CPU?
Thanks,
Francesco
prev parent reply other threads:[~2015-10-12 12:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-09 15:30 Montorsi, Francesco
2015-10-10 4:52 ` Lu, Wenzhuo
2015-10-12 8:26 ` Montorsi, Francesco
2015-10-12 8:35 ` Mcnamara, John
2015-10-12 12:25 ` Montorsi, Francesco [this message]
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