[dpdk-dev] [dpdk-users] Issue in draining packets when head is null

Suraj R Gupta surajrgupta at iith.ac.in
Thu Jan 23 18:53:37 CET 2020


Folks,
Any Ideas on this.

On Mon, Jan 13, 2020 at 1:04 PM Suraj R Gupta <surajrgupta at iith.ac.in>
wrote:

> Hi all,
> This is regarding an issue in the draining packet using rte_reorder_drain.
> Suppose we have a window size of 16 and we get packets with sequence no
> like 0,1,2,4,5,6. On performing drain operation, I retrieve packets like
> 0,1,2.
> Since now order_buf->entries[order_buf->head] i.e. order_buf->entries[3]
> is null i won't be able to any more like 4,5,6. I would be able to do it
> only when I get at a packet with a sequence number above window size. This
> may be highly undesirable if we have large window sizes say 1024, 2048,
> etc. we wouldn't be able to drain any more packets until a packet above
> window size is received. Also since the struct rte_rorder_buffer are
> defined in the source .c file, we are not able to move head of buffer from
> applications. *Is there any specific reasons why it is implemented like
> this in the library. Are there any ways to overcome this.*
> --
> Thanks and Regards
> Suraj R Gupta
>


-- 
Thanks and Regards
Suraj R Gupta


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