[dpdk-dev] [PATCH 3/3] net/i40e: enable cloud filter for MPLS

[Xing, Beilei]

> -----Original Message-----
> From: Yigit, Ferruh
> Sent: Thursday, March 9, 2017 12:06 AM
> To: Xing, Beilei <beilei.xing at intel.com>; Wu, Jingjing <jingjing.wu at intel.com>
> Cc: Zhang, Helin <helin.zhang at intel.com>; dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH 3/3] net/i40e: enable cloud filter for MPLS
> 
> On 3/3/2017 9:43 AM, Beilei Xing wrote:
> > This patch enables MPLSoUDP and MPLSoGRE cloud filter with replace
> > cloud filter.
> >
> > Signed-off-by: Beilei Xing <beilei.xing at intel.com>
> 
> <...>
> 
> > @@ -1286,6 +1286,9 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
> >  	if (ret < 0)
> >  		goto err_init_fdir_filter_list;
> >
> > +	i40e_replace_mpls_l1_filter(pf);
> > +	i40e_replace_mpls_cloud_filter(pf);
> 
> Hi Beilei,
> 
> Can you please help me to understand what has been replaced here, and
> why?

* Cloud filters type is a combination of up to 3 L1 filters.
* L1 filter depends on Type Rule index.

First, there's no MPLS label as L1 filter currently, so we need to add MPLS label by replacing some existing L1 filter, here we replace IMAC.
Second, there's no MPLS label as cloud filter currently, So here we add a new cloud filter type TEID_MPLS (0x11) to replace Inner MAC filter(0xA).

According to datasheet, the following filter types are supported by cloud filter.
6:0: Filter type:
* 0x0: Reserved
* 0x1: Reserved 
* 0x2: Reserved 
* 0x3: Inner MAC, Inner VLAN (for NVGRE, VXLAN or, Geneve or VXLAN-GPE packets)
* 0x4: Inner MAC, Inner VLAN, Tenant ID (for NVGRE, VXLAN, or Geneve or VXLAN-GPE
packets)
* 0x5: Reserved 
* 0x6: {Inner MAC, Tenant ID} (NVGRE packet, or VXLAN, /Geneve or VXLAN-GPE packets).
* 0x7: Reserved 
* 0x8: Reserved 
* 0x9: Outer MAC L2 filter
* 0xA: Inner MAC filter
* 0xB: Outer MAC, Tenant ID, Inner MAC
* 0xC: Application Destination IP
* 0xD: Application Source-IP, Inner MAC.
* 0xE - 0x3F: Reserved.

> 
> Thanks,
> ferruh
> 
> <...>