From: "Li, Xiaoyun" <xiaoyun.li@intel.com>
To: oulijun <oulijun@huawei.com>,
"linuxarm@openeuler.org" <linuxarm@openeuler.org>,
dev <dev@dpdk.org>
Subject: Re: [dpdk-dev] [Linuxarm] Re: [PATCH 1/3] app/testpmd: fix forwarding configuration when DCB test
Date: Thu, 25 Mar 2021 02:21:11 +0000 [thread overview]
Message-ID: <DM4PR11MB55345A99567EA390CA26170499629@DM4PR11MB5534.namprd11.prod.outlook.com> (raw)
In-Reply-To: <918ea8b0-8d5d-ea2b-efce-7995d787b873@huawei.com>
> -----Original Message-----
> From: oulijun <oulijun@huawei.com>
> Sent: Wednesday, March 24, 2021 21:40
> To: linuxarm@openeuler.org; Li, Xiaoyun <xiaoyun.li@intel.com>; dev
> <dev@dpdk.org>
> Subject: Re: [Linuxarm] Re: [PATCH 1/3] app/testpmd: fix forwarding
> configuration when DCB test
>
>
>
> 在 2021/3/24 10:03, Li, Xiaoyun 写道:
> >
> >
> >> -----Original Message-----
> >> From: oulijun <oulijun@huawei.com>
> >> Sent: Tuesday, March 23, 2021 22:19
> >> To: Li, Xiaoyun <xiaoyun.li@intel.com>; Yigit, Ferruh
> >> <ferruh.yigit@intel.com>
> >> Cc: dev@dpdk.org; linuxarm@openeuler.org
> >> Subject: Re: [PATCH 1/3] app/testpmd: fix forwarding configuration
> >> when DCB test
> >>
> > <snip>
> >>>> @@ -2707,14 +2707,16 @@ stop_port(portid_t pid)
> >>>> portid_t peer_pl[RTE_MAX_ETHPORTS];
> >>>> int peer_pi;
> >>>>
> >>>> - if (dcb_test) {
> >>>> - dcb_test = 0;
> >>>> - dcb_config = 0;
> >>>> - }
> >>>> -
> >>>> if (port_id_is_invalid(pid, ENABLED_WARN))
> >>>> return;
> >>>>
> >>>> + /*
> >>>> + * In "start_port" function, dcb_test is set to 1 based on dcb_config.
> >>>> + * So it should be cleared when dcb_config is 0.
> >>>> + */
> >>>> + if (dcb_config == 0)
> >>>> + dcb_test = 0;
> >>>> +
> >>>
> >>> I don't understand why are you changing this.
> >>> dcb_test will only be set when dcb_config is 1 when starting ports.
> >>> And both
> >> dcb_test and dcb_config will be cleared when stopping ports.
> >>> So dcb will only affect when you set port dcb and then start port
> >>> and when
> >> stop port dcb will be cleared.
> >>>
> >> Yes, I think. The forwarding streams should not be changed from
> >> "dcb_fwd_config_setup" to "rss_fwd_config_setup" after dcb info is
> configured.
> >> But, now, the logical codes do it when stopping ports and then starting ports.
> >>> So what's the problem of original codes?
> >>>
> >>> Your change will cause issues that there's no place to set
> >>> dcb_config as 0. If
> >> you config dcb, then it'll be always dcb mode unless restart the whole
> testpmd.
> >>>
> >> As far as I know, the current testpmd only supports switching from
> >> the normal mode to the dcb mode, but does not support the reverse
> operation.
> >> And " dcb_config" is set to 1, and then "dcb_test" is set to 1 after
> >> config.
> >
> > You're not answering my questions. Why are you changing the behavior of
> testpmd?
> > Your change will make testpmd stay dcb mode once set dcb mode and can't go
> back to normal mode. If users want to go back to normal mode, he/she has to
> restart the whole testpmd.
> >
> Yes. Testpmd and PMD driver are both in dcb mode after dcb info is configured.
> In my opinion, the 'dcb_test' flag can't be clear to go back to normal mode after
> stopping port and then starting port. Because PMD driver is still dcb mode. If
> users want to go back it, users should disable dcb mode and enable RSS or other
> mode.
>
> > It worked as you can set dcb mode and start port. After stopping port, if you
> still want dcb mode, you need to set dcb mode command again. But at least the
> old way won't break anything.
> > @Yigit, Ferruh Not sure which behavior is better, what do you think?
> >
> > And @oulijun can you just answer all comments in one thread?
> >
> After stopping port, the 'dcb_test' flag is clear. At this moment, the dcb
> configuration in testpmd has not be changed. users may not understand why
> the DCB mode needs to be reconfigured.
OK. You're right. There's no place writing port->dcb_flag back to 0.
> >>>> printf("Stopping ports...\n");
> >>>>
> >>>> RTE_ETH_FOREACH_DEV(pi) {
> >>>> --
> >>>> 2.7.4
> >>>
> >>> .
> >>>
> > _______________________________________________
> > Linuxarm mailing list -- linuxarm@openeuler.org To unsubscribe send an
> > email to linuxarm-leave@openeuler.org
> >
next prev parent reply other threads:[~2021-03-25 2:21 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-05 10:22 [dpdk-dev] [PATCH 0/3] Fixes for testpmd Lijun Ou
2021-03-05 10:22 ` [dpdk-dev] [PATCH 1/3] app/testpmd: fix forwarding configuration when DCB test Lijun Ou
2021-03-23 8:55 ` Li, Xiaoyun
2021-03-23 14:17 ` oulijun
2021-03-23 14:17 ` oulijun
2021-03-24 1:51 ` Li, Xiaoyun
2021-04-10 1:12 ` Ferruh Yigit
2021-04-10 2:53 ` oulijun
2021-03-23 14:18 ` oulijun
2021-03-24 2:03 ` Li, Xiaoyun
2021-03-24 13:40 ` [dpdk-dev] [Linuxarm] " oulijun
2021-03-25 2:21 ` Li, Xiaoyun [this message]
2021-03-27 3:53 ` oulijun
2021-04-10 0:56 ` Ferruh Yigit
2021-04-10 2:58 ` oulijun
2021-04-12 7:52 ` Ferruh Yigit
2021-04-12 12:20 ` oulijun
2021-03-05 10:22 ` [dpdk-dev] [PATCH 2/3] app/testpmd: remove forwarding config from parsing Rx and Tx Lijun Ou
2021-03-23 7:50 ` Li, Xiaoyun
2021-03-24 1:00 ` oulijun
2021-03-24 1:44 ` Li, Xiaoyun
2021-03-25 3:03 ` oulijun
2021-03-29 1:53 ` Li, Xiaoyun
2021-04-02 1:44 ` oulijun
2021-04-02 2:33 ` Li, Xiaoyun
2021-04-09 6:09 ` [dpdk-dev] [Linuxarm] " oulijun
2021-04-09 7:08 ` Li, Xiaoyun
2021-04-10 3:02 ` oulijun
2021-04-12 10:35 ` [dpdk-dev] " Ferruh Yigit
2021-04-12 12:20 ` oulijun
2021-03-05 10:22 ` [dpdk-dev] [PATCH 3/3] app/testpmd: use of Rx/Tx in testpmd Lijun Ou
2021-03-23 3:12 ` Li, Xiaoyun
2021-03-23 3:17 ` Li, Xiaoyun
2021-03-23 7:25 ` Andrew Rybchenko
2021-03-23 7:46 ` Tu, Lijuan
2021-03-23 7:51 ` oulijun
2021-03-23 7:58 ` Li, Xiaoyun
2021-03-23 10:42 ` Ferruh Yigit
2021-03-23 7:59 ` Tu, Lijuan
2021-03-20 1:19 ` [dpdk-dev] [PATCH 0/3] Fixes for testpmd Min Hu (Connor)
2021-04-20 7:31 ` [dpdk-dev] [PATCH V2 0/7] modifications about DCB forwarding configuration Huisong Li
2021-04-20 7:32 ` [dpdk-dev] [PATCH V2 1/7] app/testpmd: fix forward lcores number when DCB test Huisong Li
2021-04-27 9:20 ` Li, Xiaoyun
2021-04-27 13:49 ` Huisong Li
2021-04-28 2:13 ` Li, Xiaoyun
2021-04-20 7:32 ` [dpdk-dev] [PATCH V2 2/7] app/testpmd: fix DCB forwarding configuration Huisong Li
2021-04-20 7:32 ` [dpdk-dev] [PATCH V2 3/7] app/testpmd: fix a segment fault when DCB test Huisong Li
2021-04-20 7:32 ` [dpdk-dev] [PATCH V2 4/7] app/testpmd: add check for support of reporting DCB info Huisong Li
2021-04-20 7:32 ` [dpdk-dev] [PATCH V2 5/7] app/testpmd: move position of verifying DCB test Huisong Li
2021-04-20 7:32 ` [dpdk-dev] [PATCH V2 6/7] app/testpmd: add forwarding config in start port Huisong Li
2021-04-20 7:32 ` [dpdk-dev] [PATCH V2 7/7] app/testpmd: remove redundant fwd streams initialization Huisong Li
2021-04-20 7:35 ` [dpdk-dev] [PATCH 0/3] Fixes for testpmd Huisong Li
2021-04-20 9:00 ` [dpdk-dev] [PATCH V3 0/7] modifications about DCB forwarding configuration Huisong Li
2021-04-20 9:01 ` [dpdk-dev] [PATCH V3 1/7] app/testpmd: fix forward lcores number when DCB test Huisong Li
2021-04-27 10:18 ` Li, Xiaoyun
2021-04-20 9:01 ` [dpdk-dev] [PATCH V3 2/7] app/testpmd: fix DCB forwarding configuration Huisong Li
2021-04-27 10:59 ` Li, Xiaoyun
2021-04-27 14:13 ` Huisong Li
2021-04-20 9:01 ` [dpdk-dev] [PATCH V3 3/7] app/testpmd: fix a segment fault when DCB test Huisong Li
2021-04-27 11:19 ` Li, Xiaoyun
2021-04-27 14:10 ` Huisong Li
2021-04-28 2:02 ` Li, Xiaoyun
2021-04-28 2:26 ` Huisong Li
2021-04-20 9:01 ` [dpdk-dev] [PATCH V3 4/7] app/testpmd: add check for support of reporting DCB info Huisong Li
2021-04-27 11:26 ` Li, Xiaoyun
2021-04-20 9:01 ` [dpdk-dev] [PATCH V3 5/7] app/testpmd: move position of verifying DCB test Huisong Li
2021-04-27 11:33 ` Li, Xiaoyun
2021-04-20 9:01 ` [dpdk-dev] [PATCH V3 6/7] app/testpmd: add forwarding config in start port Huisong Li
2021-04-27 11:43 ` Li, Xiaoyun
2021-04-28 2:14 ` Huisong Li
2021-04-20 9:01 ` [dpdk-dev] [PATCH V3 7/7] app/testpmd: remove redundant fwd streams initialization Huisong Li
2021-04-27 11:50 ` Li, Xiaoyun
2021-04-28 6:40 ` [dpdk-dev] [PATCH V4 0/7] modifications about DCB forwarding configuration Huisong Li
2021-04-28 6:40 ` [dpdk-dev] [PATCH V4 1/7] app/testpmd: fix forward lcores number when DCB test Huisong Li
2021-04-28 6:40 ` [dpdk-dev] [PATCH V4 2/7] app/testpmd: fix DCB forwarding configuration Huisong Li
2021-04-28 6:40 ` [dpdk-dev] [PATCH V4 3/7] app/testpmd: fix a segment fault when DCB test Huisong Li
2021-04-28 6:40 ` [dpdk-dev] [PATCH V4 4/7] app/testpmd: add check for support of reporting DCB info Huisong Li
2021-04-28 6:40 ` [dpdk-dev] [PATCH V4 5/7] app/testpmd: move position of verifying DCB test Huisong Li
2021-04-28 6:40 ` [dpdk-dev] [PATCH V4 6/7] app/testpmd: add forwarding configuration when config DCB Huisong Li
2021-04-28 6:40 ` [dpdk-dev] [PATCH V4 7/7] app/testpmd: remove redundant fwd streams initialization Huisong Li
2021-04-28 7:01 ` [dpdk-dev] [PATCH V4 0/7] modifications about DCB forwarding configuration Li, Xiaoyun
2021-04-29 16:13 ` Ferruh Yigit
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