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

[Nidhia Varghese <nidhiavarghese93@gmail.com>]

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