[PATCH net] mctp: return -ENOPROTOOPT for unknown getsockopt options

[PATCH net] mctp: return -ENOPROTOOPT for unknown getsockopt options

[Alok Tiwari]

In mctp_getsockopt(), unrecognized options currently return -EINVAL.
In contrast, mctp_setsockopt() returns -ENOPROTOOPT for unknown
options.

Update mctp_getsockopt() to also return -ENOPROTOOPT for unknown
options. This aligns the behavior of getsockopt() and setsockopt(),
and matches the standard kernel socket API convention for handling
unsupported options.

Fixes: 99ce45d5e7db ("mctp: Implement extended addressing")
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
---
 net/mctp/af_mctp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mctp/af_mctp.c b/net/mctp/af_mctp.c
index df4e8cf33899..685524800d70 100644
--- a/net/mctp/af_mctp.c
+++ b/net/mctp/af_mctp.c
@@ -425,7 +425,7 @@ static int mctp_getsockopt(struct socket *sock, int level, int optname,
 		return 0;
 	}
 
-	return -EINVAL;
+	return -ENOPROTOOPT;
 }
 
 /* helpers for reading/writing the tag ioc, handling compatibility across the
-- 
2.50.1

Re: [PATCH net] mctp: return -ENOPROTOOPT for unknown getsockopt options

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Tue,  2 Sep 2025 03:20:55 -0700 you wrote:
> In mctp_getsockopt(), unrecognized options currently return -EINVAL.
> In contrast, mctp_setsockopt() returns -ENOPROTOOPT for unknown
> options.
> 
> Update mctp_getsockopt() to also return -ENOPROTOOPT for unknown
> options. This aligns the behavior of getsockopt() and setsockopt(),
> and matches the standard kernel socket API convention for handling
> unsupported options.
> 
> [...]

Here is the summary with links:
  - [net] mctp: return -ENOPROTOOPT for unknown getsockopt options
    https://git.kernel.org/netdev/net/c/a125c8fb9ddb

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html