[PATCH v2] net/tap: resolve stringop-overflow with gcc 12 on ppc64le
Stephen Hemminger
stephen at networkplumber.org
Tue May 16 01:20:32 CEST 2023
On Tue, 16 May 2023 00:14:52 +0100
Ferruh Yigit <ferruh.yigit at amd.com> wrote:
> Hi David,
>
> I confirm the build error, btw it helps to future references to put
> build failure to the commit log,
>
> and change is reasonable to convert PMD local parse function to an API,
> BUT my concern is they don't behave exactly same, which changes user
> interface of the driver.
>
> The 'rte_ether_unformat_addr()' API expects exact "XX:XX:XX:XX:XX:XX or
> XXXX:XXXX:XXXX" format.
> Like 'parse_user_mac()' accepts 'a:a:a:a:a:a' as input, but API requires
> '0A:0A:0A:0A:0A:0A'.
>
> This is a small change but still may create a bad experience if an
> existing user/script hit by this, and I believe we don't have a strong
> reason to change the interface.
>
>
> To keep behavior same, we can either update 'rte_ether_unformat_addr()'
> to accept singe chars between ':',
> or fix the existing 'parse_user_mac()' for compiler warning, what do you
> think?
This is the kind of change where a simple release note will suffice.
Not sure if anyone beyond some test script would ever use this anyway.
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