linux-kernel - Re: [PATCHv2] SO_ZEROCOPY should return -EOPNOTSUPP rather than -ENOTSUPP

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Date:   Wed, 09 Mar 2022 06:20:12 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Samuel Thibault <samuel.thibault@...ri.fr>
Cc:     davem@...emloft.net, kuba@...nel.org,
        willemdebruijn.kernel@...il.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCHv2] SO_ZEROCOPY should return -EOPNOTSUPP rather than -ENOTSUPP

Hello:

This patch was applied to netdev/net-next.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Mon, 7 Mar 2022 23:31:26 +0100 you wrote:
> ENOTSUPP is documented as "should never be seen by user programs",
> and thus not exposed in <errno.h>, and thus applications cannot safely
> check against it (they get "Unknown error 524" as strerror). We should
> rather return the well-known -EOPNOTSUPP.
> 
> This is similar to 2230a7ef5198 ("drop_monitor: Use correct error
> code") and 4a5cdc604b9c ("net/tls: Fix return values to avoid
> ENOTSUPP"), which did not seem to cause problems.
> 
> [...]

Here is the summary with links:
  - [PATCHv2] SO_ZEROCOPY should return -EOPNOTSUPP rather than -ENOTSUPP
    https://git.kernel.org/netdev/net-next/c/869420a8be19

You are awesome, thank you!
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