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mctp: return -ENOPROTOOPT for unknown getsockopt options

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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: 99ce45d5e7 ("mctp: Implement extended addressing")
Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Link: https://patch.msgid.link/20250902102059.1370008-1-alok.a.tiwari@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alok Tiwari
2025-09-02 03:20:55 -07:00
committed by Jakub Kicinski
parent cc282f73bc
commit a125c8fb9d
1 changed files with 1 additions and 1 deletions
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2
net/mctp/af_mctp.c
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@@ -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