From: Francesco Mancino <francesco.mancino@tutus.se>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: dev@dpdk.org
Subject: Re: [PATCH v7] net/tap: Allow jumbo frames
Date: Mon, 8 Aug 2022 17:38:21 +0200 [thread overview]
Message-ID: <93cbc18c-fcc4-d34d-4419-5268513f7b87@tutus.se> (raw)
In-Reply-To: <20220808080323.53f303fe@hermes.local>
Thank you for the feedback.
I am sorry for the email spam, it was a learning process.
I am not sure what results we would get by querying the MTU
before configuring it, since we can (and do) set the MTU using
SIOCSIFMTU.
On 2022-08-08 17:03, Stephen Hemminger wrote:
> On Mon, 8 Aug 2022 16:49:44 +0200
> Francesco Mancino <francesco.mancino@tutus.se> wrote:
>
>> eth_dev_validate_mtu, introduced in 990912e676e, validates configured
>> MTU plus overhead against max_rx_pktlen.
>> Since TAP is a virtual device, it should support as big MTU as possible.
>>
>> Signed-off-by: Francesco Mancino <francesco.mancino@tutus.se>
> dev_info->min_rx_bufsize = 0;
>
>
> Thanks for your patience.
>
> Since tap is built on top of an existing kernel network device a more
> complete solution would be to query the kernel device to find out what
> its MTU is.
>
> Acked-by: Stephen Hemminger <stephen@networkplumber.org>
>
next prev parent reply other threads:[~2022-08-08 15:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-08 9:31 [PATCH] " Francesco Mancino
2022-08-08 14:41 ` Stephen Hemminger
2022-08-08 14:49 ` [PATCH v7] " Francesco Mancino
2022-08-08 15:03 ` Stephen Hemminger
2022-08-08 15:38 ` Francesco Mancino [this message]
2022-08-08 16:42 ` Stephen Hemminger
2022-08-09 7:57 ` Francesco Mancino
2023-01-19 14:50 ` Ferruh Yigit
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