From: fengchengwen <fengchengwen@huawei.com>
To: Long Li <longli@microsoft.com>, Ferruh Yigit <ferruh.yigit@xilinx.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
Ajay Sharma <sharmaajay@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>
Subject: Re: [Patch v6 01/18] net/mana: add basic driver, build environment and doc
Date: Sat, 3 Sep 2022 09:44:24 +0800 [thread overview]
Message-ID: <c1a947ed-0c8b-a84d-7636-ba9669860669@huawei.com> (raw)
In-Reply-To: <PH7PR21MB3263FC13CD09BFD6DC13334CCE7A9@PH7PR21MB3263.namprd21.prod.outlook.com>
On 2022/9/3 3:45, Long Li wrote:
>> Subject: Re: [Patch v6 01/18] net/mana: add basic driver, build environment and
>> doc
>>
>> On 2022/8/31 6:51, longli@linuxonhyperv.com wrote:
>>> From: Long Li <longli@microsoft.com>
>>>
>>> MANA is a PCI device. It uses IB verbs to access hardware through the
>>> kernel RDMA layer. This patch introduces build environment and basic
>>> device probe functions.
>>>
>>> Signed-off-by: Long Li <longli@microsoft.com>
>> ...
>>
>>> +static int mana_mp_primary_handle(const struct rte_mp_msg *mp_msg,
>>> + const void *peer)
>>> +{
>>> + struct rte_eth_dev *dev;
>>> + const struct mana_mp_param *param =
>>> + (const struct mana_mp_param *)mp_msg->param;
>>> + struct rte_mp_msg mp_res = { 0 };
>>> + struct mana_mp_param *res = (struct mana_mp_param
>> *)mp_res.param;
>>> + int ret;
>>> + struct mana_priv *priv;
>>> +
>>> + if (!rte_eth_dev_is_valid_port(param->port_id)) {
>>> + DRV_LOG(ERR, "MP handle port ID %u invalid", param->port_id);
>>> + return -ENODEV;
>>> + }
>>> +
>>> + dev = &rte_eth_devices[param->port_id];
>>> + priv = dev->data->dev_private;
>>> +
>>> + mp_init_msg(&mp_res, param->type, param->port_id);
>>> +
>>> + switch (param->type) {
>>> + case MANA_MP_REQ_VERBS_CMD_FD:
>>> + mp_res.num_fds = 1;
>>> + mp_res.fds[0] = priv->ib_ctx->cmd_fd;
>> The cmd_fd is system level handler?
>>
>> If it's process private handler, it should not used directly in another process.
> According to rte_mp_xxx semantics, the file handle is duplicated to another process. It's not directly used. It's required for secondary process to map to the same doorbell pages.
You are right. I notice the rte_mp_xx use AF_UNIX which could process it.
Thanks for clarify.
>
>>> + res->result = 0;
>>> + ret = rte_mp_reply(&mp_res, peer);
>>> + break;
>>> +
>>> + default:
>>> + DRV_LOG(ERR, "Port %u unknown primary MP type %u",
>>> + param->port_id, param->type);
>>> + ret = -EINVAL;
>>> + }
>>> +
>>> + return ret;
>>> +}
>>> +
next prev parent reply other threads:[~2022-09-03 1:44 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-30 22:51 [Patch v6 00/18] Introduce Microsoft Azure Network Adatper (MANA) PMD longli
2022-08-30 22:51 ` [Patch v6 01/18] net/mana: add basic driver, build environment and doc longli
2022-08-31 1:32 ` lihuisong (C)
2022-08-31 18:05 ` Long Li
2022-09-05 7:15 ` lihuisong (C)
2022-09-07 1:36 ` Long Li
2022-09-07 2:16 ` lihuisong (C)
2022-09-07 2:26 ` Long Li
2022-09-07 11:11 ` Ferruh Yigit
2022-09-07 18:12 ` Long Li
2022-09-02 12:09 ` fengchengwen
2022-09-02 19:45 ` Long Li
2022-09-03 1:44 ` fengchengwen [this message]
2022-08-30 22:51 ` [Patch v6 02/18] net/mana: add device configuration and stop longli
2022-08-30 22:51 ` [Patch v6 03/18] net/mana: add function to report support ptypes longli
2022-08-30 22:51 ` [Patch v6 04/18] net/mana: add link update longli
2022-08-30 22:51 ` [Patch v6 05/18] net/mana: add function for device removal interrupts longli
2022-08-30 22:51 ` [Patch v6 06/18] net/mana: add device info longli
2022-09-02 12:11 ` fengchengwen
2022-09-02 19:35 ` Long Li
2022-08-30 22:51 ` [Patch v6 07/18] net/mana: add function to configure RSS longli
2022-08-30 22:51 ` [Patch v6 08/18] net/mana: add function to configure RX queues longli
2022-08-30 22:51 ` [Patch v6 09/18] net/mana: add function to configure TX queues longli
2022-08-30 22:51 ` [Patch v6 10/18] net/mana: implement memory registration longli
2022-08-30 22:51 ` [Patch v6 11/18] net/mana: implement the hardware layer operations longli
2022-08-30 22:51 ` [Patch v6 12/18] net/mana: add function to start/stop TX queues longli
2022-08-30 22:51 ` [Patch v6 13/18] net/mana: add function to start/stop RX queues longli
2022-08-30 22:51 ` [Patch v6 14/18] net/mana: add function to receive packets longli
2022-08-30 22:51 ` [Patch v6 15/18] net/mana: add function to send packets longli
2022-09-02 12:18 ` fengchengwen
2022-09-02 19:40 ` Long Li
2022-08-30 22:51 ` [Patch v6 16/18] net/mana: add function to start/stop device longli
2022-08-30 22:51 ` [Patch v6 17/18] net/mana: add function to report queue stats longli
2022-08-30 22:51 ` [Patch v6 18/18] net/mana: add function to support RX interrupts longli
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