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From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: "Liu, Jijiang" <jijiang.liu@intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v6 2/9] librte_ether:add VxLAN packet identification API in librte_ether
Date: Wed, 22 Oct 2014 15:25:18 +0200
Message-ID: <1498449.2AChC3Xc4h@xps13> (raw)
In-Reply-To: <1ED644BD7E0A5F4091CF203DAFB8E4CC01D82A66@SHSMSX101.ccr.corp.intel.com>

2014-10-22 12:47, Liu, Jijiang:
> > > Currently, A PF  associated to a port, right? What tunnel type should
> > > be supported in a PF, which is required we configure it.
> > > Tunneling packet is encapsulation packet, in terms of VxLAN, packet
> > > format is outer L2 header+ outer L3 header +outer L4 header +
> > > tunneling header+ inner L2 header + inner L3 header + inner L4 header +PAY4.
> > > For a VM/VF, the  real useful packet data is "inner L2 header + inner
> > > L3 header + inner L4 header +PAY4".
> > >
> > > In NIC, A port/PF receive this kind of tunneling packet(outer
> > > L2+...PAY4), software should be responsible for decapsulating the
> > > packet and deliver real data(innerL2 + PAY4) to VM/VF。
> > >
> > > DPDK just provide API/mechanism to guarantee a PF/port to receive the
> > > tunneling packet data, the encapsulation/ decapsulation work should be
> > > done by user application.
> > 
> > You mean that all packets received on the PF which doesn't match the
> > configured tunnel type, won't be received by the software?
> 
> No, it will be received by the software.
> In terms of VxLAN packet, if tunnel type is not configured VXLAN type,
> and software can't use API to configure the UDP destination number. 
> Even if the incoming packet format is VXLAN packet format, hardware and
> software don't think it is VXLAN packet because we didn't configure UDP
> Destination port. 
> 
> Now I want to remove this limitation,  even if the  tunnel type is not
> configured at PF initialization phase, user also can configure the VxLAN
> UDP destination number.
> It is more flexible and reasonable.
> 
> > Other question, why a port is associated with only one tunnel type?
> 
> Good question. Now I think we had better remove this limitation because it is NIC related.
> 
> Two points are summarized here.
> 1. The tunnel types is for a whole port/PF, I have explained it a lots.
> 2. I will remove tunnel type configuration from rte_eth_conf structure.
> 
> Any comments?

Honestly, I haven't understood your explanation :)
I just understood that you want to remove tunnel type from rte_eth_conf
and I think it's a really good thing.

Thanks
-- 
Thomas

  reply	other threads:[~2014-10-22 13:17 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-21  8:45 [dpdk-dev] [PATCH v6 0/9] Support VxLAN on Fortville Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 1/9] librte_mbuf:the rte_mbuf structure changes Jijiang Liu
2014-10-21 10:26   ` Thomas Monjalon
2014-10-21 14:14     ` Liu, Jijiang
2014-10-22  8:45       ` Thomas Monjalon
2014-10-22  8:53         ` Liu, Jijiang
2014-10-23  2:23         ` Zhang, Helin
2014-11-12 13:26           ` Thomas Monjalon
2014-11-12 14:31             ` Zhang, Helin
2014-11-12 15:23               ` Thomas Monjalon
2014-11-13  3:17             ` Liu, Jijiang
2014-11-13  8:53               ` Thomas Monjalon
2014-11-13 11:24                 ` Liu, Jijiang
2014-11-13 11:35                   ` Thomas Monjalon
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 2/9] librte_ether:add VxLAN packet identification API in librte_ether Jijiang Liu
2014-10-21 10:51   ` Thomas Monjalon
2014-10-21 13:48     ` Liu, Jijiang
2014-10-21 21:19       ` Thomas Monjalon
2014-10-22  1:46         ` Liu, Jijiang
2014-10-22  9:52           ` Thomas Monjalon
2014-10-22 12:47             ` Liu, Jijiang
2014-10-22 13:25               ` Thomas Monjalon [this message]
2014-10-22  5:21         ` Liu, Jijiang
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 3/9] i40e:support VxLAN packet identification in librte_pmd_i40e Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 4/9] app/test-pmd:test VxLAN packet identification Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 5/9] librte_ether:add data structures of VxLAN filter Jijiang Liu
2014-10-21 15:13   ` Thomas Monjalon
2014-10-22  2:25     ` Liu, Jijiang
2014-10-22  9:31       ` Thomas Monjalon
2014-10-22 11:03         ` Liu, Jijiang
2014-10-23  9:06           ` Chilikin, Andrey
2014-10-22  6:45     ` Liu, Jijiang
2014-10-22  9:25       ` Thomas Monjalon
2014-10-22 13:54         ` Liu, Jijiang
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 6/9] i40e:implement API of VxLAN packet filter in librte_pmd_i40e Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 7/9] app/testpmd:test VxLAN packet filter Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 8/9] i40e:support VxLAN Tx checksum offload Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 9/9] app/testpmd:test " Jijiang Liu
2014-10-21 14:54 ` [dpdk-dev] [PATCH v6 0/9] Support VxLAN on Fortville Liu, Yong

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