From: "lihuisong (C)" <lihuisong@huawei.com>
To: "Morten Brørup" <mb@smartsharesystems.com>, dev@dpdk.org
Cc: <thomas@monjalon.net>, <ferruh.yigit@amd.com>,
<andrew.rybchenko@oktetlabs.ru>, <liuyonglong@huawei.com>
Subject: Re: [PATCH v2 1/3] ethdev: introduce maximum Rx buffer size
Date: Sat, 28 Oct 2023 09:23:03 +0800 [thread overview]
Message-ID: <39046603-5e4b-9345-dab7-989fefff6d8e@huawei.com> (raw)
In-Reply-To: <98CBD80474FA8B44BF855DF32C47DC35E9EFA1@smartserver.smartshare.dk>
在 2023/10/27 15:40, Morten Brørup 写道:
>> From: Huisong Li [mailto:lihuisong@huawei.com]
>> Sent: Friday, 27 October 2023 06.15
>>
>> The "min_rx_bufsize" in struct rte_eth_dev_info stands for the minimum
>> Rx buffer size supported by hardware. Actually, some engines also have
>> the maximum Rx buffer specification, like, hns3. If mbuf data room size
>> in mempool is greater then the maximum Rx buffer size supported by HW,
>> the data size application used in each mbuf is just as much as the
>> maximum
>> Rx buffer size supported by HW instead of the whole data room size.
>>
>> So introduce maximum Rx buffer size which is not enforced just to
>> report user to avoid memory waste. In addition, fix the comment for
>> the "min_rx_bufsize" to make it be more specific.
>>
>> Signed-off-by: Huisong Li <lihuisong@huawei.com>
>> ---
> [...]
>
>> --- a/lib/ethdev/rte_ethdev.h
>> +++ b/lib/ethdev/rte_ethdev.h
>> @@ -1723,7 +1723,14 @@ struct rte_eth_dev_info {
>> uint16_t min_mtu; /**< Minimum MTU allowed */
>> uint16_t max_mtu; /**< Maximum MTU allowed */
>> const uint32_t *dev_flags; /**< Device flags */
>> - uint32_t min_rx_bufsize; /**< Minimum size of Rx buffer. */
>> + /**< Minimum Rx buffer size per descriptor supported by HW. */
>> + uint32_t min_rx_bufsize;
> The comment was moved above min_rx_bufsize, so you must use "/** " instead of "/**< ".
You are right. will fix it in next version.
>
>> + /**
>> + * Maximum Rx buffer size per descriptor supported by HW.
>> + * The value is not enforced, information only to application to
>> + * optimize mbuf size.
>> + */
>> + uint32_t max_rx_bufsize;
> The comment should mention that the value is UINT32_MAX when not specified by the driver.
Ack
>
> With those to changes,
>
> Acked-by: Morten Brørup <mb@smartsharesystems.com>
>
>
> .
next prev parent reply other threads:[~2023-10-28 1:23 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-08 4:02 [RFC] " Huisong Li
2023-08-11 12:07 ` Andrew Rybchenko
2023-08-15 8:16 ` lihuisong (C)
2023-08-15 11:10 ` [PATCH v1 0/3] " Huisong Li
2023-08-15 11:10 ` [PATCH v1 1/3] ethdev: " Huisong Li
2023-09-28 15:56 ` Ferruh Yigit
2023-10-24 12:21 ` lihuisong (C)
2023-08-15 11:10 ` [PATCH v1 2/3] app/testpmd: add maximum Rx buffer size display Huisong Li
2023-08-15 11:10 ` [PATCH v1 3/3] net/hns3: report maximum buffer size Huisong Li
2023-10-27 4:15 ` [PATCH v2 0/3] introduce maximum Rx " Huisong Li
2023-10-27 4:15 ` [PATCH v2 1/3] ethdev: " Huisong Li
2023-10-27 6:27 ` fengchengwen
2023-10-27 7:40 ` Morten Brørup
2023-10-28 1:23 ` lihuisong (C) [this message]
2023-10-27 4:15 ` [PATCH v2 2/3] app/testpmd: add maximum Rx buffer size display Huisong Li
2023-10-27 6:28 ` fengchengwen
2023-10-27 4:15 ` [PATCH v2 3/3] net/hns3: report maximum buffer size Huisong Li
2023-10-27 6:17 ` fengchengwen
2023-10-28 1:48 ` [PATCH v3 0/3] introduce maximum Rx " Huisong Li
2023-10-28 1:48 ` [PATCH v3 1/3] ethdev: " Huisong Li
2023-10-29 15:43 ` Stephen Hemminger
2023-10-30 3:08 ` lihuisong (C)
2023-10-28 1:48 ` [PATCH v3 2/3] app/testpmd: add maximum Rx buffer size display Huisong Li
2023-10-28 1:48 ` [PATCH v3 3/3] net/hns3: report maximum buffer size Huisong Li
2023-10-29 15:48 ` [PATCH v3 0/3] introduce maximum Rx " Stephen Hemminger
2023-10-30 1:25 ` lihuisong (C)
2023-10-30 18:48 ` Stephen Hemminger
2023-10-31 2:57 ` lihuisong (C)
2023-10-31 7:48 ` Morten Brørup
2023-10-31 15:40 ` Stephen Hemminger
2023-11-01 2:36 ` lihuisong (C)
2023-11-01 16:08 ` Stephen Hemminger
2023-11-02 1:59 ` lihuisong (C)
2023-11-02 16:23 ` Ferruh Yigit
2023-11-02 16:51 ` Morten Brørup
2023-11-02 17:05 ` Ferruh Yigit
2023-11-02 17:12 ` Morten Brørup
2023-11-02 17:35 ` Ferruh Yigit
2023-11-03 2:13 ` lihuisong (C)
2023-11-02 12:16 ` [PATCH v4 " Huisong Li
2023-11-02 12:16 ` [PATCH v4 1/3] ethdev: " Huisong Li
2023-11-02 16:35 ` Ferruh Yigit
2023-11-03 2:21 ` lihuisong (C)
2023-11-03 3:30 ` Ferruh Yigit
2023-11-03 6:27 ` lihuisong (C)
2023-11-02 12:16 ` [PATCH v4 2/3] app/testpmd: add maximum Rx buffer size display Huisong Li
2023-11-02 16:42 ` Ferruh Yigit
2023-11-03 2:39 ` lihuisong (C)
2023-11-03 3:53 ` Ferruh Yigit
2023-11-03 6:37 ` lihuisong (C)
2023-11-02 12:16 ` [PATCH v4 3/3] net/hns3: report maximum buffer size Huisong Li
2023-11-03 10:27 ` [PATCH v5 0/3] introduce maximum Rx " Huisong Li
2023-11-03 10:27 ` [PATCH v5 1/3] ethdev: " Huisong Li
2023-11-03 12:37 ` Ivan Malov
2023-11-03 10:27 ` [PATCH v5 2/3] app/testpmd: add maximum Rx buffer size display Huisong Li
2023-11-03 10:27 ` [PATCH v5 3/3] net/hns3: report maximum buffer size Huisong Li
2023-11-03 11:53 ` [PATCH v5 0/3] introduce maximum Rx " Ferruh Yigit
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