Hi Gyanesh, Could you please provide some additional information about your system (ODP & DPDK versions, NICs)? I’m using DPDK (v17.11.4) zero-copy pktio with the latest ODP master branch code and I’m unable to reproduce this issue.
Regards, Matias > On 16 Oct 2018, at 23:44, gyanesh patra <pgyanesh.pa...@gmail.com> wrote: > > Hi Maxim, > Increasing the POOL_SEG_LEN worked. But i am not sure how to calculate the > necessary value to use? > I was using the values from the odp_l2fwd example before. But now i > required to increase it upto 2200 for it to work. > Is there any guideline how to calculate this value? And also does it have > any impact on performance? > > Regarding the examples, i tried with odp_l2fwd_simple and odp_switch and > faced the same problem. But in my case "odp_l2fwd" example never recieves > any packets. Hence i have not been able to test that. If you can give any > input regarding this, it will be helpful too. > Thanks for your help. > > Regards, > P Gyanesh Kumar Patra > > > On Tue, Oct 16, 2018 at 3:36 PM Maxim Uvarov <maxim.uva...@linaro.org> > wrote: > >> DPDK as ODP can have packets which are not in physacally continius memory. >> I.e. packet can be split on several memory segments. That is not supported >> by current code and you have this warning. I think that we have dpdk pkio >> validation test and it works with large packets. But to do that you need to >> be sure that you created pool with right parameters. In your case >> POOL_SEG_LEN has to be increased. >> >> Also you can try more featured example: ./test/performance/odp_l2fwd >> >> Best Regards, >> Maxim. >> >> >> On Tue, 16 Oct 2018 at 20:49, gyanesh patra <pgyanesh.pa...@gmail.com> >> wrote: >> >>> Hi, >>> I am facing problem while using ODP master branch with DPDK pktio & >>> zero-pkt-copy as below: >>> >>> ODP/bin/# ./odp_l2fwd_simple ./odp_l2fwd_simple >>> >>> pktio/dpdk.c:851:mbuf_to_pkt_zero():Segmented buffers not supported >>> pktio/dpdk.c:851:mbuf_to_pkt_zero():Segmented buffers not supported >>> pktio/dpdk.c:851:mbuf_to_pkt_zero():Segmented buffers not supported >>> pktio/dpdk.c:851:mbuf_to_pkt_zero():Segmented buffers not supported >>> >>> This error is present for dpdk pktio only. It appears with larger packet >>> sizes like 1518bytes, 1280bytes. But everything works fine with 1024bytes >>> and smaller packets. >>> >>> I have verified that the packets have IP-don't fragment flag set. And >>> Wireshark doesn't show any abnormality with the pcap. >>> Is it broken or we need to specify some extra flags? >>> >>> I am on: >>> commit 570758a22fd0d6e2b2a73eb8ed0a8360a5b0ef32 >>> Author: Matias Elo <matias....@nokia.com> >>> Date: Tue Oct 2 14:13:35 2018 +0300 >>> linux-gen: ring: allocate global data from shm >>> >>> >>> Thanks, >>> P Gyanesh Kumar Patra >>> >>
