Revert "rtnetlink: return EINVAL when request cannot succeed"
authorFlorent Fourcot <florent.fourcot@wifirst.fr>
Tue, 19 Apr 2022 12:51:51 +0000 (14:51 +0200)
committerDavid S. Miller <davem@davemloft.net>
Fri, 22 Apr 2022 10:02:00 +0000 (11:02 +0100)
commit6f37c9f9dfbf9a9645ec5ea2d9370b0fd3e9081e
tree246fb14390760c1f7c6293303a094054f6ce03c0
parent59359597b010ced20e6e14c8660834c05c2a96b7
Revert "rtnetlink: return EINVAL when request cannot succeed"

This reverts commit b6177d3240a4

ip-link command is testing kernel capability by sending a RTM_NEWLINK
request, without any argument. It accepts everything in reply, except
EOPNOTSUPP and EINVAL (functions iplink_have_newlink / accept_msg)

So we must keep compatiblity here, invalid empty message should not
return EINVAL

Signed-off-by: Florent Fourcot <florent.fourcot@wifirst.fr>
Tested-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/rtnetlink.c