Re: [dpdk-dev] Getting meta data from different pipelines in ip_pipeline application

["Dumitrescu, Cristian" <cristian.dumitrescu@intel.com>]

Hi Nidhia,

You should go ahead and test it. Did you test it and it did not work as you expect?

Personally, I cannot see any reasons why it should not work, but you need to test it yourself. I am assuming that pipelines 4, 5,6 below have the passthrough type and pipeline 7 has the flow classification type.

Regards,
Cristian

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Nidhia Varghese
> Sent: Thursday, June 1, 2017 1:59 PM
> To: users@dpdk.org; dev@dpdk.org
> Subject: Re: [dpdk-dev] Getting meta data from different pipelines in
> ip_pipeline application
> 
> Hi,
> 
> Any comments on the below thread?
> 
> Thanks,
> Nidhia
> 
> On Tue, May 30, 2017 at 12:33 PM, Nidhia Varghese <
> nidhiavarghese93@gmail.com> wrote:
> 
> > Hi,
> >
> > This is how I want my pipelines to work:-
> > Pipeline 4:
> > Has to get the source mac address and save it in 160th(160-167) meta data
> > filed in the mbuf.
> > Pipeline 5:
> > Will take the vlan id and store it in 168th(168-175) offset of the same
> > mbuf
> > Pipeline 6:
> > Take the incoming port id which is in 23rd position of the mbuf and store
> > it in 175th offset. (It will overlap with vlan id field stored, but since I
> > need only that one bit and I have to access all the three fileds together
> > as a 16 bit key value, I have done this overlapping)
> > Pipeline 7:
> > Key offset is given as 160 and key size is given as 16. So that 160 to 175
> > will be available as we have stored those in meta data in the previous
> > three pipelines.
> >
> > I want to know whether my logic will work if I write the config file as
> > shown below. Will pipeline 7 be able to get the stored source mac address,
> > vlan id and port id from the given key offset?
> >
> > [PIPELINE4]
> > ..
> > ..
> > dma_size = 8
> > dma_dst_offset = 160
> > dma_src_offset = 262
> > dma_src_mask = FFFFFFFFFFFF0000
> > dma_hash_offset = 192
> >
> > [PIPELINE5]
> > ..
> > ..
> > dma_size = 8
> > dma_dst_offset = 168
> > dma_src_offset = 268
> > dma_src_mask = 00000FFF00000000
> > dma_hash_offset = 200
> >
> > [PIPELINE6]
> > ..
> > ..
> > dma_size = 8
> > dma_dst_offset = 175
> > dma_src_offset = 23
> > dma_src_mask = FF00000000000000
> > dma_hash_offset = 208
> >
> > [PIPELINE7]
> > ..
> > ..
> > key_size = 16
> > key_offset = 160
> > key_mask = FFFFFFFFFFFF000000000FFF000000FF
> > ..
> >
> > Thanks for your reply and help.
> >
> > Regards,
> > Nidhia Varghese
> >
> 
> 
> 
> --
> 
> Regards,
> Nidhia Varghese