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From: "Min Hu (Connor)" <humin29@huawei.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>, <dev@dpdk.org>,
	Xiaoyun Li <xiaoyun.li@intel.com>
Cc: Anatoly Burakov <anatoly.burakov@intel.com>,
	Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
	Thomas Monjalon <thomas@monjalon.net>
Subject: Re: [dpdk-dev] [PATCH v9] app/testpmd: support multi-process
Date: Sat, 17 Apr 2021 14:12:52 +0800
Message-ID: <3372d919-a756-0f16-f7c3-afc699d44e94@huawei.com> (raw)
In-Reply-To: <b369c67b-33b1-892d-e596-a3b776958382@intel.com>

Hi, Ferrruh,
	All is fixed in v10, please check it out, thanks.

在 2021/4/17 0:30, Ferruh Yigit 写道:
> On 4/16/2021 2:52 AM, Min Hu (Connor) wrote:
>> This patch adds multi-process support for testpmd.
>> The test cmd example as follows:
>> the primary cmd:
>> ./dpdk-testpmd -a xxx --proc-type=auto -l 0-1 -- -i \
>> --rxq=4 --txq=4 --num-procs=2 --proc-id=0
>>
>> the secondary cmd:
>> ./dpdk-testpmd -a xxx --proc-type=auto -l 2-3 -- -i \
>> --rxq=4 --txq=4 --num-procs=2 --proc-id=1
>>
> 
> Hi Connor,
> 
> Thanks for the update. +Anatoly as multi-process maintainer, and ethdev 
> maintainers.
> 
>> Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
>> Signed-off-by: Lijun Ou <oulijun@huawei.com>
>> Acked-by: Xiaoyun Li <xiaoyun.li@intel.com>
>> Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
>> ---
>> v9:
>> * Updated release notes and rst doc.
>> * Deleted deprecated codes.
>> * move macro and variable.
>>
>> v8:
>> * Added warning info about queue numbers and process numbers.
>>
>> v7:
>> * Fixed compiling error for unexpected unindent.
>>
>> v6:
>> * Add rte flow description for multiple process.
>>
>> v5:
>> * Fixed run_app.rst for multiple process description.
>> * Fix compiling error.
>>
>> v4:
>> * Fixed minimum vlaue of Rxq or Txq in doc.
>>
>> v3:
>> * Fixed compiling error using gcc10.0.
>>
>> v2:
>> * Added document for this patch.
>> ---
>>   app/test-pmd/cmdline.c                 |   6 ++
>>   app/test-pmd/config.c                  |  14 ++++-
>>   app/test-pmd/parameters.c              |  12 ++++
>>   app/test-pmd/testpmd.c                 | 108 
>> +++++++++++++++++++++++----------
>>   app/test-pmd/testpmd.h                 |   3 +
>>   doc/guides/rel_notes/release_21_05.rst |   1 +
>>   doc/guides/testpmd_app_ug/run_app.rst  |  86 ++++++++++++++++++++++++++
>>   7 files changed, 196 insertions(+), 34 deletions(-)
>>
>> diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
>> index 5bf1497..e465824 100644
>> --- a/app/test-pmd/cmdline.c
>> +++ b/app/test-pmd/cmdline.c
>> @@ -5354,6 +5354,12 @@ cmd_set_flush_rx_parsed(void *parsed_result,
>>           __rte_unused void *data)
>>   {
>>       struct cmd_set_flush_rx *res = parsed_result;
>> +
>> +    if (num_procs > 1 && (strcmp(res->mode, "on") == 0)) {
>> +        printf("multi-process doesn't support to flush rx queues.\n");
>> +        return;
>> +    }
>> +
>>       no_flush_rx = (uint8_t)((strcmp(res->mode, "on") == 0) ? 0 : 1);
>>   }
>> diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
>> index 40b2b29..c982c87 100644
>> --- a/app/test-pmd/config.c
>> +++ b/app/test-pmd/config.c
>> @@ -2860,6 +2860,8 @@ rss_fwd_config_setup(void)
>>       queueid_t  rxq;
>>       queueid_t  nb_q;
>>       streamid_t  sm_id;
>> +    int start;
>> +    int end;
>>       nb_q = nb_rxq;
>>       if (nb_q > nb_txq)
>> @@ -2877,7 +2879,15 @@ rss_fwd_config_setup(void)
>>       init_fwd_streams();
>>       setup_fwd_config_of_each_lcore(&cur_fwd_config);
>> -    rxp = 0; rxq = 0;
>> +
>> +    if (proc_id > 0 && nb_q % num_procs)
>> +        printf("Warning! queue numbers should be multiple of "
>> +            "processes, or packet loss will happen.\n");
>> +
>> +    start = proc_id * nb_q / num_procs;
>> +    end = start + nb_q / num_procs;
>> +    rxp = 0;
>> +    rxq = start;
> 
> Can you put some comment above, on what/why is done, something similar 
> to you already put into the documentation?
> 
>>       for (sm_id = 0; sm_id < cur_fwd_config.nb_fwd_streams; sm_id++) {
>>           struct fwd_stream *fs;
>> @@ -2894,6 +2904,8 @@ rss_fwd_config_setup(void)
>>               continue;
>>           rxp = 0;
>>           rxq++;
>> +        if (rxq >= end)
>> +            rxq = start;
>>       }
>>   }
>> diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
>> index f3954c1..d86cc21 100644
>> --- a/app/test-pmd/parameters.c
>> +++ b/app/test-pmd/parameters.c
>> @@ -508,6 +508,9 @@ parse_link_speed(int n)
>>   void
>>   launch_args_parse(int argc, char** argv)
>>   {
>> +#define PARAM_PROC_ID "proc-id"
>> +#define PARAM_NUM_PROCS "num-procs"
>> +
>>       int n, opt;
>>       char **argvopt;
>>       int opt_idx;
>> @@ -625,6 +628,8 @@ launch_args_parse(int argc, char** argv)
>>           { "rx-mq-mode",                 1, 0, 0 },
>>           { "record-core-cycles",         0, 0, 0 },
>>           { "record-burst-stats",         0, 0, 0 },
>> +        { PARAM_NUM_PROCS,              1, 0, 0 },
>> +        { PARAM_PROC_ID,                1, 0, 0 },
>>           { 0, 0, 0, 0 },
>>       };
>> @@ -1391,6 +1396,13 @@ launch_args_parse(int argc, char** argv)
>>                   record_core_cycles = 1;
>>               if (!strcmp(lgopts[opt_idx].name, "record-burst-stats"))
>>                   record_burst_stats = 1;
>> +
> 
> To be consistent for rest, this empty line can be removed.
> 
>> +            if (strncmp(lgopts[opt_idx].name,
>> +                    PARAM_NUM_PROCS, 9) == 0)
>> +                num_procs = atoi(optarg);
>> +            if (strncmp(lgopts[opt_idx].name,
>> +                    PARAM_PROC_ID, 7) == 0)
>> +                proc_id = atoi(optarg);
>>               break;
>>           case 'h':
>>               usage(argv[0]);
>> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
>> index 96d2e0f..01d0d82 100644
>> --- a/app/test-pmd/testpmd.c
>> +++ b/app/test-pmd/testpmd.c
>> @@ -518,6 +518,16 @@ enum rte_eth_rx_mq_mode rx_mq_mode = 
>> ETH_MQ_RX_VMDQ_DCB_RSS;
>>    */
>>   uint32_t eth_link_speed;
>> +/*
>> + * Id of the current process.
>> + */
> 
> Can you please add more info, like this being related to the 
> primary/secondary process support and used to configure the queues to be 
> polled.
> 
>> +int proc_id;
>> +
>> +/*
>> + * Number of processes.
>> + */
>> +unsigned int num_procs = 1;
>> +
> 
> Ditto.
> 
> <...>
> 
>> @@ -2511,21 +2537,28 @@ start_port(portid_t pid)
>>                   return -1;
>>               }
>>               /* configure port */
>> -            diag = rte_eth_dev_configure(pi, nb_rxq + nb_hairpinq,
>> +            if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
>> +                diag = rte_eth_dev_configure(pi,
>> +                             nb_rxq + nb_hairpinq,
>>                                nb_txq + nb_hairpinq,
>>                                &(port->dev_conf));
>> -            if (diag != 0) {
>> -                if (rte_atomic16_cmpset(&(port->port_status),
>> -                RTE_PORT_HANDLING, RTE_PORT_STOPPED) == 0)
>> -                    printf("Port %d can not be set back "
>> -                            "to stopped\n", pi);
>> -                printf("Fail to configure port %d\n", pi);
>> -                /* try to reconfigure port next time */
>> -                port->need_reconfig = 1;
>> -                return -1;
>> +                if (diag != 0) {
>> +                    if (rte_atomic16_cmpset(
>> +                            &(port->port_status),
>> +                            RTE_PORT_HANDLING,
>> +                            RTE_PORT_STOPPED) == 0)
>> +                        printf("Port %d can not be set "
>> +                               "back to stopped\n", pi);
>> +                    printf("Fail to configure port %d\n",
>> +                        pi);
>> +                    /* try to reconfigure port next time */
>> +                    port->need_reconfig = 1;
>> +                    return -1;
>> +                }
> 
> Just an idea,
> I am a little worried about the complexity this new process type checks 
> are added to the multiple locations. What do you think hiding process 
> type checks behind new functions, like:
> eth_dev_configure_mp(...) {
>    if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
>      return rte_eth_dev_configure(..)
>    }
>    return 0;
> }
> 
> and replace it with 'rte_eth_dev_configure()':
> 
>   -diag = rte_eth_dev_configure(...)
>   +diag = eth_dev_configure_mp(...)
> 
> Do you think does this help reducing the complexity added by the 
> multi-process support?
> 
>>               }
>>           }
>> -        if (port->need_reconfig_queues > 0) {
>> +        if (port->need_reconfig_queues > 0 &&
>> +            rte_eal_process_type() == RTE_PROC_PRIMARY) {
> 
> According our coding convention, we don't allign with paranthesis but 
> put double tabs.
> 
> And what about creating an inline function for primary process check, 
> like is_proc_primary(), that may help.
> 
>>               port->need_reconfig_queues = 0;
>>               /* setup tx queues */
>>               for (qi = 0; qi < nb_txq; qi++) {
>> @@ -2626,17 +2659,20 @@ start_port(portid_t pid)
>>           cnt_pi++;
>>           /* start port */
>> -        diag = rte_eth_dev_start(pi);
>> -        if (diag < 0) {
>> -            printf("Fail to start port %d: %s\n", pi,
>> -                   rte_strerror(-diag));
>> +        if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
>> +            diag = rte_eth_dev_start(pi);
>> +            if (diag < 0) {
>> +                printf("Fail to start port %d: %s\n", pi,
>> +                       rte_strerror(-diag));
>> -            /* Fail to setup rx queue, return */
>> -            if (rte_atomic16_cmpset(&(port->port_status),
>> +                /* Fail to setup rx queue, return */
>> +                if (rte_atomic16_cmpset(&(port->port_status),
>>                   RTE_PORT_HANDLING, RTE_PORT_STOPPED) == 0)
> 
> Syntax is wrong here after change, but if you go with above idea to hide 
> process type check within functions, you won't need to change these 
> lines at all.
> 
> <...>
> 
>> @@ -3885,8 +3925,10 @@ main(int argc, char** argv)
>>           }
>>       }
>> -    if (!no_device_start && start_port(RTE_PORT_ALL) != 0)
>> +    if (!no_device_start && start_port(RTE_PORT_ALL) != 0) {
>> +        pmd_test_exit();
> 
> Why need to add 'pmd_test_exit()' for the multi-process support, if 
> there is a special case, please add comment for it.
> 
> 
> .

  reply	other threads:[~2021-04-17  6:12 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-08  9:46 [dpdk-dev] [RFC] " Lijun Ou
2021-01-08 10:28 ` Ferruh Yigit
2021-01-09  9:54   ` oulijun
2021-01-10 12:32 ` Wisam Monther
2021-01-12 14:13   ` oulijun
2021-01-12 14:21     ` Wisam Monther
2021-01-14  2:46       ` oulijun
2021-01-20 14:06 ` [dpdk-dev] [RFC V2] " Lijun Ou
2021-03-05  1:04   ` [dpdk-dev] [PATCH] " Lijun Ou
2021-03-05  4:05     ` Ajit Khaparde
2021-03-10 11:11       ` Min Hu (Connor)
2021-03-11  2:47     ` [dpdk-dev] [PATCH v2] " Min Hu (Connor)
2021-03-22  2:27       ` Ajit Khaparde
2021-03-22  6:35         ` Min Hu (Connor)
2021-06-15 12:23       ` [dpdk-dev] [PATCH v14] " Min Hu (Connor)
2021-07-02 12:09       ` [dpdk-dev] [PATCH v15] " Andrew Rybchenko
2021-07-02 12:47         ` Andrew Rybchenko
2021-07-08 12:20           ` Min Hu (Connor)
2021-07-08 12:30             ` Andrew Rybchenko
2021-07-08 12:51               ` Min Hu (Connor)
2021-07-10  3:50       ` [dpdk-dev] [PATCH v16] " Min Hu (Connor)
2021-07-24 11:45         ` Thomas Monjalon
2021-07-26  0:26           ` Min Hu (Connor)
2021-07-26  6:30             ` Thomas Monjalon
2021-07-26  7:28               ` Min Hu (Connor)
2021-08-02  1:51                 ` Min Hu (Connor)
2021-08-02  8:03                   ` Thomas Monjalon
2021-08-16 18:12                     ` Singh, Aman Deep
2021-08-24 12:18                       ` Ferruh Yigit
2021-08-24 13:27                         ` Min Hu (Connor)
2021-08-25  2:06       ` [dpdk-dev] [PATCH v17] " Min Hu (Connor)
2021-09-07 13:23         ` Ferruh Yigit
2021-09-08  0:48           ` Min Hu (Connor)
2021-03-11  9:07     ` [dpdk-dev] [PATCH v3] " Min Hu (Connor)
2021-03-20  0:58       ` Min Hu (Connor)
2021-03-22  7:07     ` [dpdk-dev] [PATCH v4] " Min Hu (Connor)
2021-03-22 11:19       ` Ferruh Yigit
2021-03-24  8:08       ` Li, Xiaoyun
2021-03-25 13:32         ` Min Hu (Connor)
2021-03-25 23:25           ` Ajit Khaparde
2021-03-26  6:46             ` Min Hu (Connor)
2021-03-25 13:17     ` [dpdk-dev] [PATCH v5] " Min Hu (Connor)
2021-03-26  6:46     ` [dpdk-dev] [PATCH v6] " Min Hu (Connor)
2021-03-26  8:52     ` [dpdk-dev] [PATCH v7] " Min Hu (Connor)
2021-03-29  7:51       ` Li, Xiaoyun
2021-03-30  1:48         ` Min Hu (Connor)
2021-03-30  1:48     ` [dpdk-dev] [PATCH v8] " Min Hu (Connor)
2021-03-30  2:17       ` Li, Xiaoyun
2021-03-30  6:36         ` Min Hu (Connor)
2021-03-30  3:11       ` Ajit Khaparde
2021-03-30  6:41         ` Min Hu (Connor)
2021-03-30 10:19           ` Ferruh Yigit
2021-03-30 10:43             ` Min Hu (Connor)
2021-04-08 10:32               ` Min Hu (Connor)
2021-04-08 13:27                 ` Ferruh Yigit
2021-04-09  0:45                   ` Min Hu (Connor)
2021-04-12 16:37       ` Ferruh Yigit
2021-04-15  7:54         ` Ferruh Yigit
2021-04-16  2:20           ` Min Hu (Connor)
2021-04-16  1:52     ` [dpdk-dev] [PATCH v9] " Min Hu (Connor)
2021-04-16 16:30       ` Ferruh Yigit
2021-04-17  6:12         ` Min Hu (Connor) [this message]
2021-04-17  6:12     ` [dpdk-dev] [PATCH v10] " Min Hu (Connor)
2021-04-17 22:21       ` Ferruh Yigit
2021-04-19  1:03         ` Min Hu (Connor)
2021-04-19  1:03     ` [dpdk-dev] [PATCH v11] " Min Hu (Connor)
2021-04-19 13:42       ` Ferruh Yigit
2021-04-21  9:08         ` Min Hu (Connor)
2021-04-21  8:36     ` [dpdk-dev] [PATCH v12] " Min Hu (Connor)
2021-04-22  1:18     ` [dpdk-dev] [PATCH v13] " Min Hu (Connor)
2021-06-08  8:42       ` Andrew Rybchenko
2021-06-08 10:22         ` Thomas Monjalon
2021-06-08 10:39           ` Andrew Rybchenko
2021-06-08 12:02             ` Thomas Monjalon
2021-06-08 12:36             ` Ferruh Yigit
2021-06-15 12:04         ` Min Hu (Connor)
2021-04-19  6:44 [dpdk-dev] [PATCH v9] " Singh, Aman Deep

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