RTNL checks for the setup() callback existing in a few place as a sanity
check. The introduction of the alloc() method makes the setup() method
optional. So allow RTNL families that define at least one alloc() or
setup() method.
Fixes: ???? ("rtnetlink: add alloc() method to rtnl_link_ops")
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@xxxxxxxxx>
---
net/core/rtnetlink.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 49a27bf6e4a7..56ac16abe0ba 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -376,12 +376,12 @@ int __rtnl_link_register(struct rtnl_link_ops *ops)
if (rtnl_link_ops_get(ops->kind))
return -EEXIST;
- /* The check for setup is here because if ops
+ /* The check for alloc/setup is here because if ops
* does not have that filled up, it is not possible
* to use the ops for creating device. So do not
* fill up dellink as well. That disables rtnl_dellink.
*/
- if (ops->setup && !ops->dellink)
+ if ((ops->alloc || ops->setup) && !ops->dellink)
ops->dellink = unregister_netdevice_queue;
list_add_tail(&ops->list, &link_ops);
@@ -3421,7 +3421,7 @@ static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
return -EOPNOTSUPP;
}
- if (!ops->setup)
+ if (!ops->alloc && !ops->setup)
return -EOPNOTSUPP;
if (!ifname[0]) {
--
2.26.3
