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From: Ye Xiaolong <xiaolong.ye@intel.com>
To: "Wang, Haiyue" <haiyue.wang@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	"Zhang, Qi Z" <qi.z.zhang@intel.com>,
	"Yang, Qiming" <qiming.yang@intel.com>,
	"Xing, Beilei" <beilei.xing@intel.com>,
	"Zhao1, Wei" <wei.zhao1@intel.com>
Subject: Re: [dpdk-dev] [PATCH v1 1/4] net/iavf: stop the PCI probe in DCF mode
Date: Tue, 10 Mar 2020 11:37:49 +0800
Message-ID: <20200310033749.GA6272@intel.com> (raw)
In-Reply-To: <24f139630bb94961b3c4f0f9dd88ca64@intel.com>

On 03/10, Wang, Haiyue wrote:
>> -----Original Message-----
>> From: Ye, Xiaolong <xiaolong.ye@intel.com>
>> Sent: Monday, March 9, 2020 23:38
>> To: Wang, Haiyue <haiyue.wang@intel.com>
>> Cc: dev@dpdk.org; Zhang, Qi Z <qi.z.zhang@intel.com>; Yang, Qiming <qiming.yang@intel.com>; Xing,
>> Beilei <beilei.xing@intel.com>; Zhao1, Wei <wei.zhao1@intel.com>
>> Subject: Re: [PATCH v1 1/4] net/iavf: stop the PCI probe in DCF mode
>> 
>> On 03/09, Haiyue Wang wrote:
>> >A new DCF PMD will be introduced, which runs on Intel VF hardware, and
>> >it is a pure software design to control the advance functionality (such
>> >as switch, ACL) for rest of the VFs.
>> >
>> >So if the DCF (Device Config Function) mode is specified by the devarg
>> >'cap=dcf', then it will stop the PCI probe in the iavf PMD.
>> >
>> >Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
>> >---
>> > drivers/net/iavf/iavf_ethdev.c | 41 ++++++++++++++++++++++++++++++++++
>> > 1 file changed, 41 insertions(+)
>> >
>> >diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
>> >index 34913f9c4..8ff26c0e7 100644
>> >--- a/drivers/net/iavf/iavf_ethdev.c
>> >+++ b/drivers/net/iavf/iavf_ethdev.c
>> >@@ -1416,9 +1416,49 @@ iavf_dev_uninit(struct rte_eth_dev *dev)
>> > 	return 0;
>> > }
>> >
>> >+static int
>> >+handle_dcf_arg(__rte_unused const char *key, const char *value,
>> >+	       __rte_unused void *arg)
>> >+{
>> >+	bool *dcf = arg;
>> >+
>> >+	if (arg == NULL || value == NULL)
>> >+		return -EINVAL;
>> >+
>> >+	if (strcmp(value, "dcf") == 0)
>> >+		*dcf = true;
>> >+	else
>> >+		*dcf = false;
>> >+
>> >+	return 0;
>> >+}
>> >+
>> >+static bool
>> >+check_cap_dcf_enable(struct rte_devargs *devargs)
>> >+{
>> >+	struct rte_kvargs *kvlist;
>> >+	bool enable = false;
>> >+
>> >+	if (devargs == NULL)
>> >+		return false;
>> >+
>> >+	kvlist = rte_kvargs_parse(devargs->args, NULL);
>> >+	if (kvlist == NULL)
>> >+		return false;
>> >+
>> >+	rte_kvargs_process(kvlist, "cap", handle_dcf_arg, &enable);
>> 
>> Need error handling for failure case.
>>   
>
>We just need the 'cap=dcf' to check whether it is true, by default
>'enable=false' can handle all the cases. ;-)
>

Yes, from function point of view, this could work. But it is still good practice
to check the return value of the function.

Thanks,
Xiaolong


  reply index

Thread overview: 94+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-09 14:14 [dpdk-dev] [PATCH v1 0/4] add Intel DCF PMD support Haiyue Wang
2020-03-09 14:14 ` [dpdk-dev] [PATCH v1 1/4] net/iavf: stop the PCI probe in DCF mode Haiyue Wang
2020-03-09 15:38   ` Ye Xiaolong
2020-03-10  2:19     ` Wang, Haiyue
2020-03-10  3:37       ` Ye Xiaolong [this message]
2020-03-10  4:26         ` Wang, Haiyue
2020-03-23  1:50   ` Wu, Jingjing
2020-03-23  1:55     ` Wang, Haiyue
2020-03-09 14:14 ` [dpdk-dev] [PATCH v1 2/4] net/ice: export the DDP definition symbols Haiyue Wang
2020-03-09 16:25   ` Ye Xiaolong
2020-03-09 14:14 ` [dpdk-dev] [PATCH v1 3/4] net/ice: add the DCF framework Haiyue Wang
2020-03-10  4:17   ` Ye Xiaolong
2020-03-10  5:09     ` Wang, Haiyue
2020-03-10  5:23       ` Ye Xiaolong
2020-03-09 14:14 ` [dpdk-dev] [PATCH v1 4/4] doc: add release notes for Intel ice PMD Haiyue Wang
2020-03-09 15:22   ` Ye Xiaolong
2020-03-10  2:16     ` Wang, Haiyue
2020-03-09 15:36 ` [dpdk-dev] [PATCH v1 0/4] add Intel DCF PMD support David Marchand
2020-03-09 16:20   ` Ye Xiaolong
2020-03-09 17:57     ` Thomas Monjalon
2020-03-09 19:34       ` Kevin Traynor
2020-03-10  2:00         ` Wang, Haiyue
2020-03-10  7:48           ` Thomas Monjalon
2020-03-10  9:36             ` Ferruh Yigit
2020-03-10 14:11               ` Aaron Conole
2020-03-10 14:09   ` Aaron Conole
2020-03-10  6:50 ` [dpdk-dev] [PATCH v2 0/7] " Haiyue Wang
2020-03-10  6:50   ` [dpdk-dev] [PATCH v2 1/7] net/iavf: stop the PCI probe in DCF mode Haiyue Wang
2020-03-13  5:27     ` Ye Xiaolong
2020-03-10  6:50   ` [dpdk-dev] [PATCH v2 2/7] net/ice: add the DCF hardware initialization Haiyue Wang
2020-03-10  6:50   ` [dpdk-dev] [PATCH v2 3/7] net/ice: initiate to acquire the DCF capability Haiyue Wang
2020-03-13  5:51     ` Ye Xiaolong
2020-03-13  6:19       ` Wang, Haiyue
2020-03-13  6:04     ` Ye Xiaolong
2020-03-13  6:10       ` Wang, Haiyue
2020-03-10  6:50   ` [dpdk-dev] [PATCH v2 4/7] net/ice: handle the AdminQ command by DCF Haiyue Wang
2020-03-10  6:50   ` [dpdk-dev] [PATCH v2 5/7] net/ice: export the DDP definition symbols Haiyue Wang
2020-03-10  6:50   ` [dpdk-dev] [PATCH v2 6/7] net/ice: handle the PF initialization by DCF Haiyue Wang
2020-03-13  7:59     ` Ye Xiaolong
2020-03-13  8:03       ` Ye Xiaolong
2020-03-16  4:52       ` Wang, Haiyue
2020-03-13 14:06     ` Ye Xiaolong
2020-03-13 14:11       ` Wang, Haiyue
2020-03-10  6:50   ` [dpdk-dev] [PATCH v2 7/7] net/ice: get the VF hardware index in DCF Haiyue Wang
2020-03-13  7:01     ` Ye Xiaolong
2020-03-16  5:58       ` Wang, Haiyue
2020-03-13 16:19   ` [dpdk-dev] [PATCH v2 0/7] add Intel DCF PMD support Stillwell Jr, Paul M
2020-03-13 16:25     ` Wang, Haiyue
2020-03-13 16:50       ` Stillwell Jr, Paul M
2020-03-13 17:05         ` Wang, Haiyue
2020-03-13 17:47           ` Stillwell Jr, Paul M
2020-03-14  1:57             ` Wang, Haiyue
2020-03-15  1:49     ` Zhang, Qi Z
2020-03-16 18:54       ` Stillwell Jr, Paul M
2020-03-17  2:35         ` Wang, Haiyue
2020-03-16  5:52 ` [dpdk-dev] [PATCH v3 " Haiyue Wang
2020-03-16  5:52   ` [dpdk-dev] [PATCH v3 1/7] net/iavf: stop the PCI probe in DCF mode Haiyue Wang
2020-03-16  5:52   ` [dpdk-dev] [PATCH v3 2/7] net/ice: add the DCF hardware initialization Haiyue Wang
2020-03-16  5:52   ` [dpdk-dev] [PATCH v3 3/7] net/ice: acquire and disable the DCF capability Haiyue Wang
2020-03-16  5:52   ` [dpdk-dev] [PATCH v3 4/7] net/ice: handle the AdminQ command by DCF Haiyue Wang
2020-03-16  5:52   ` [dpdk-dev] [PATCH v3 5/7] net/ice: export the DDP definition symbols Haiyue Wang
2020-03-16  5:52   ` [dpdk-dev] [PATCH v3 6/7] net/ice: handle the PF initialization by DCF Haiyue Wang
2020-03-16  5:52   ` [dpdk-dev] [PATCH v3 7/7] net/ice: get the VF hardware index in DCF Haiyue Wang
2020-03-26  3:03 ` [dpdk-dev] [PATCH v4 0/7] add Intel DCF PMD support Haiyue Wang
2020-03-26  3:03   ` [dpdk-dev] [PATCH v4 1/7] net/iavf: stop the PCI probe in DCF mode Haiyue Wang
2020-03-26  3:28     ` Wu, Jingjing
2020-03-26  3:03   ` [dpdk-dev] [PATCH v4 2/7] net/ice: add the DCF hardware initialization Haiyue Wang
2020-03-26  3:03   ` [dpdk-dev] [PATCH v4 3/7] net/ice: acquire and disable the DCF capability Haiyue Wang
2020-03-26  3:03   ` [dpdk-dev] [PATCH v4 4/7] net/ice: handle the AdminQ command by DCF Haiyue Wang
2020-03-26  3:03   ` [dpdk-dev] [PATCH v4 5/7] net/ice: export the DDP definition symbols Haiyue Wang
2020-03-26  3:03   ` [dpdk-dev] [PATCH v4 6/7] net/ice: handle the PF initialization by DCF Haiyue Wang
2020-03-26  3:03   ` [dpdk-dev] [PATCH v4 7/7] net/ice: get the VF hardware index in DCF Haiyue Wang
2020-03-26  4:11   ` [dpdk-dev] [PATCH v4 0/7] add Intel DCF PMD support Zhang, Qi Z
2020-03-26  5:05   ` Ye Xiaolong
2020-03-26  5:26     ` Wang, Haiyue
2020-03-26  7:15 ` [dpdk-dev] [PATCH v5 " Haiyue Wang
2020-03-26  7:15   ` [dpdk-dev] [PATCH v5 1/7] net/iavf: stop the PCI probe in DCF mode Haiyue Wang
2020-03-26  7:15   ` [dpdk-dev] [PATCH v5 2/7] net/ice: add the DCF hardware initialization Haiyue Wang
2020-03-26  7:15   ` [dpdk-dev] [PATCH v5 3/7] net/ice: acquire and disable the DCF capability Haiyue Wang
2020-03-26  7:15   ` [dpdk-dev] [PATCH v5 4/7] net/ice: handle the AdminQ command by DCF Haiyue Wang
2020-03-26  7:15   ` [dpdk-dev] [PATCH v5 5/7] net/ice: export the DDP definition symbols Haiyue Wang
2020-03-26  7:15   ` [dpdk-dev] [PATCH v5 6/7] net/ice: handle the PF initialization by DCF Haiyue Wang
2020-03-26  7:15   ` [dpdk-dev] [PATCH v5 7/7] net/ice: get the VF hardware index in DCF Haiyue Wang
2020-03-27  2:56 ` [dpdk-dev] [PATCH v6 0/7] add Intel DCF PMD support Haiyue Wang
2020-03-27  2:56   ` [dpdk-dev] [PATCH v6 1/7] net/iavf: stop the PCI probe in DCF mode Haiyue Wang
2020-03-27  2:56   ` [dpdk-dev] [PATCH v6 2/7] net/ice: add the DCF hardware initialization Haiyue Wang
2020-03-31  8:50     ` Ferruh Yigit
2020-03-31 12:17       ` Wang, Haiyue
2020-03-27  2:56   ` [dpdk-dev] [PATCH v6 3/7] net/ice: acquire and disable the DCF capability Haiyue Wang
2020-03-27  2:56   ` [dpdk-dev] [PATCH v6 4/7] net/ice: handle the AdminQ command by DCF Haiyue Wang
2020-03-27  2:56   ` [dpdk-dev] [PATCH v6 5/7] net/ice: export the DDP definition symbols Haiyue Wang
2020-03-27  2:56   ` [dpdk-dev] [PATCH v6 6/7] net/ice: handle the PF initialization by DCF Haiyue Wang
2020-03-27  2:56   ` [dpdk-dev] [PATCH v6 7/7] net/ice: get the VF hardware index in DCF Haiyue Wang
2020-03-27 15:26   ` [dpdk-dev] [PATCH v6 0/7] add Intel DCF PMD support Ye Xiaolong

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