[RTNL]: Improve error codes for unsupported operations
The most common trigger of these errors is that the
config option hasn't been enable wich would make the
functionality available. Therefore returning EOPNOTSUPP
gives a better idea on what is going wrong.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index fa5f938..5266df33 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -862,7 +862,7 @@
type = nlh->nlmsg_type;
if (type > RTM_MAX)
- return -EINVAL;
+ return -EOPNOTSUPP;
type -= RTM_BASE;
@@ -885,7 +885,7 @@
dumpit = rtnl_get_dumpit(family, type);
if (dumpit == NULL)
- return -EINVAL;
+ return -EOPNOTSUPP;
return netlink_dump_start(rtnl, skb, nlh, dumpit, NULL);
}
@@ -913,7 +913,7 @@
doit = rtnl_get_doit(family, type);
if (doit == NULL)
- return -EINVAL;
+ return -EOPNOTSUPP;
return doit(skb, nlh, (void *)&rta_buf[0]);
}