From: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>
To: "Varghese, Vipin" <vipin.varghese@intel.com>,
Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
"thomas@monjalon.net" <thomas@monjalon.net>,
"Mcnamara, John" <john.mcnamara@intel.com>,
"Kovacevic, Marko" <marko.kovacevic@intel.com>,
Ori Kam <orika@mellanox.com>,
"Richardson, Bruce" <bruce.richardson@intel.com>,
"Nicolau, Radu" <radu.nicolau@intel.com>,
Akhil Goyal <akhil.goyal@nxp.com>,
"Kantecki, Tomasz" <tomasz.kantecki@intel.com>,
Sunil Kumar Kori <skori@marvell.com>
Cc: "Andrzej Ostruszka [C]" <aostruszka@marvell.com>,
"dev@dpdk.org" <dev@dpdk.org>,
Vamsi Krishna Attunuru <vattunuru@marvell.com>
Subject: Re: [dpdk-dev] [PATCH v4] examples/l2fwd: add cmdline option for forwarding port info
Date: Fri, 1 May 2020 15:14:17 +0000 [thread overview]
Message-ID: <BYAPR18MB25185E21871C531CA6B69888DEAB0@BYAPR18MB2518.namprd18.prod.outlook.com> (raw)
In-Reply-To: <4C9E0AB70F954A408CC4ADDBF0F8FA7D4D4BB66C@BGSMSX101.gar.corp.intel.com>
>Hi Vamsi & Pavan,
>
>I like this idea, couple of queries
>
>snipped
>> +static int
>> +check_port_pair_config(void)
>> +{
>> + uint32_t port_pair_config_mask = 0;
>> + uint32_t port_pair_mask = 0;
>> + uint16_t index, i, portid;
>> +
>> + for (index = 0; index < nb_port_pair_params; index++) {
>> + port_pair_mask = 0;
>> +
>> + for (i = 0; i < NUM_PORTS; i++) {
>> + portid = port_pair_params[index].port[i];
>> + if ((l2fwd_enabled_port_mask & (1 << portid))
>== 0) {
>> + printf("port %u is not enabled in port
>> mask\n",
>> + portid);
>> + return -1;
>> + }
>> + if (!rte_eth_dev_is_valid_port(portid)) {
>> + printf("port %u is not present on the
>> board\n",
>> + portid);
>> + return -1;
>> + }
>> +
>
>Should we check & warn the user if
>1. port speed mismatch
>2. on different NUMA
>3. port pairs are physical and vdev like tap, and KNI (performance).
>
Sure, it can be a separate patch as it will be applicable for multiple examples.
>> + port_pair_mask |= 1 << portid;
>> + }
>> +
>
>snipped
>
>
>>
>> + if (port_pair_params != NULL) {
>> + if (check_port_pair_config() < 0)
>> + rte_exit(EXIT_FAILURE, "Invalid port pair
>config\n");
>> + }
>> +
>> /* check port mask to possible port mask */
>> if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1))
>> rte_exit(EXIT_FAILURE, "Invalid portmask; possible
>(0x%x)\n",
>> @@ -565,26 +689,35 @@ main(int argc, char **argv)
>> l2fwd_dst_ports[portid] = 0;
>> last_port = 0;
>>
>
>Should not the check_port_pair be after this? If the port is not enabled
>in port_mask will you skip that pair? or skip RX-TX from that port?
We check every port pair against l2fwd_enabled_port_mask in
check_port_pair_config()
>
>> - /*
>> - * Each logical core is assigned a dedicated TX queue on each
>port.
>> - */
>> - RTE_ETH_FOREACH_DEV(portid) {
>> - /* skip ports that are not enabled */
>> - if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
>> - continue;
>> + /* populate destination port details */
>> + if (port_pair_params != NULL) {
>> + uint16_t idx, p;
>>
>> - if (nb_ports_in_mask % 2) {
>> - l2fwd_dst_ports[portid] = last_port;
>> - l2fwd_dst_ports[last_port] = portid;
>> + for (idx = 0; idx < (nb_port_pair_params << 1); idx++) {
>> + p = idx & 1;
>> + portid = port_pair_params[idx >> 1].port[p];
>> + l2fwd_dst_ports[portid] =
>> + port_pair_params[idx >> 1].port[p ^ 1];
>> }
>> - else
>> - last_port = portid;
>> + } else {
>> + RTE_ETH_FOREACH_DEV(portid) {
>> + /* skip ports that are not enabled */
>> + if ((l2fwd_enabled_port_mask & (1 << portid))
>== 0)
>> + continue;
>>
>> - nb_ports_in_mask++;
>> - }
>> - if (nb_ports_in_mask % 2) {
>> - printf("Notice: odd number of ports in portmask.\n");
>> - l2fwd_dst_ports[last_port] = last_port;
>> + if (nb_ports_in_mask % 2) {
>> + l2fwd_dst_ports[portid] = last_port;
>> + l2fwd_dst_ports[last_port] = portid;
>> + } else {
>> + last_port = portid;
>> + }
>> +
>> + nb_ports_in_mask++;
>> + }
>> + if (nb_ports_in_mask % 2) {
>> + printf("Notice: odd number of ports in
>portmask.\n");
>> + l2fwd_dst_ports[last_port] = last_port;
>> + }
>> }
>
>As mentioned above there can ports in mask which might be disabled
>for port pair. Should not that be skipped rather than setting last port rx-
>tx loopback?
There could be scenarios where user might want to test 2x10G and 1x40G
Why force the user to explicitly mention 1x40G as port pair of itself in the
portpair config?
>
>>
>> rx_lcore_id = 0;
>> @@ -613,7 +746,8 @@ main(int argc, char **argv)
>>
>> qconf->rx_port_list[qconf->n_rx_port] = portid;
>> qconf->n_rx_port++;
>> - printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
>> + printf("Lcore %u: RX port %u TX port %u\n",
>rx_lcore_id,
>> + portid, l2fwd_dst_ports[portid]);
>> }
>>
>> nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd +
>> MAX_PKT_BURST +
>> --
>> 2.17.1
next prev parent reply other threads:[~2020-05-01 15:14 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-23 11:56 [dpdk-dev] [PATCH v1 1/1] bus/pci: probe PCI devices in whitelisted order vattunuru
2019-09-25 6:41 ` Slava Ovsiienko
2019-09-25 9:07 ` Gaëtan Rivet
2019-09-26 4:15 ` Vamsi Krishna Attunuru
2019-09-26 8:04 ` Gaëtan Rivet
2019-09-26 9:39 ` [dpdk-dev] [EXT] " Vamsi Krishna Attunuru
2019-09-30 12:51 ` [dpdk-dev] [PATCH v1] eal: add manual probing option Gaetan Rivet
2019-09-30 17:51 ` Aaron Conole
2019-10-01 7:28 ` Gaëtan Rivet
2019-10-01 12:57 ` Aaron Conole
2019-09-30 18:53 ` Stephen Hemminger
2019-10-01 9:10 ` Gaëtan Rivet
2019-10-01 9:49 ` Jerin Jacob
2019-10-01 14:09 ` Gaëtan Rivet
2019-10-01 14:26 ` Jerin Jacob
2019-10-03 7:58 ` [dpdk-dev] [PATCH v2] " Gaetan Rivet
2019-10-04 12:55 ` [dpdk-dev] [PATCH v3] " Gaetan Rivet
2019-10-07 1:27 ` Vamsi Krishna Attunuru
2019-10-23 8:44 ` Gaëtan Rivet
2019-10-25 11:59 ` Jerin Jacob
2019-10-25 12:50 ` Gaëtan Rivet
2019-10-25 13:24 ` Jerin Jacob
2019-10-25 14:41 ` [dpdk-dev] [PATCH v4] " Gaetan Rivet
2019-10-25 15:01 ` Jerin Jacob
2019-10-25 15:46 ` [dpdk-dev] [PATCH v5] " Gaetan Rivet
2019-10-25 15:51 ` Jerin Jacob
2020-01-22 16:51 ` Pavan Nikhilesh Bhagavatula
2020-01-23 9:20 ` Gaetan Rivet
2020-01-23 9:58 ` [dpdk-dev] [PATCH v7] " Gaetan Rivet
2020-02-03 5:16 ` Pavan Nikhilesh Bhagavatula
2020-02-03 22:21 ` Thomas Monjalon
2020-02-04 10:03 ` Gaetan Rivet
2020-02-04 11:07 ` Thomas Monjalon
2020-02-04 12:43 ` Gaetan Rivet
2020-02-04 15:06 ` Thomas Monjalon
2020-02-04 16:02 ` Gaetan Rivet
2020-02-10 14:51 ` Jerin Jacob
2020-02-10 15:27 ` Thomas Monjalon
2020-02-10 16:33 ` Jerin Jacob
2020-04-03 3:30 ` [dpdk-dev] [PATCH] [v1 1/1] examples/l2fwd: add cmdline option for forwarding port info vattunuru
2020-04-03 12:51 ` Andrzej Ostruszka [C]
2020-04-05 3:49 ` Vamsi Krishna Attunuru
2020-04-05 3:52 ` [dpdk-dev] [PATCH] [v2 " vattunuru
2020-04-06 9:32 ` Andrzej Ostruszka [C]
2020-04-26 21:19 ` Thomas Monjalon
2020-04-27 7:59 ` [dpdk-dev] [PATCH v3] " pbhagavatula
2020-04-27 9:19 ` Sunil Kumar Kori
2020-04-27 9:36 ` Andrzej Ostruszka [C]
2020-04-27 10:14 ` Sunil Kumar Kori
2020-04-27 16:38 ` Pavan Nikhilesh Bhagavatula
2020-04-27 16:49 ` Sunil Kumar Kori
2020-04-27 18:31 ` [dpdk-dev] [PATCH v4] " pbhagavatula
2020-04-28 5:54 ` Sunil Kumar Kori
2020-05-01 14:00 ` Varghese, Vipin
2020-05-01 15:14 ` Pavan Nikhilesh Bhagavatula [this message]
2020-05-02 4:34 ` Varghese, Vipin
2020-05-11 0:23 ` Pavan Nikhilesh Bhagavatula
2020-05-24 16:13 ` Thomas Monjalon
2020-05-25 9:29 ` Bruce Richardson
2020-07-04 13:36 ` Jerin Jacob
2020-07-05 12:23 ` Thomas Monjalon
2020-04-04 16:34 ` [dpdk-dev] [EXT] Re: [PATCH v7] eal: add manual probing option Jerin Jacob Kollanukkaran
2023-06-14 19:33 ` [dpdk-dev] " Stephen Hemminger
2023-06-26 16:12 ` Gaëtan Rivet
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