genetlink: introduce and use genl_family_attrbuf()

This helper function allows family implementations to access
their family's attrbuf. This gets rid of the attrbuf usage
in families, and also adds locking validation, since it's not
valid to use the attrbuf with parallel_ops or outside of the
dumpit callback.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c
index 3200059d14b2..4b94f3cfe3af 100644
--- a/net/tipc/netlink.c
+++ b/net/tipc/netlink.c
@@ -262,7 +262,7 @@ int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr)
 {
         u32 maxattr = tipc_genl_family.maxattr;
 
-        *attr = tipc_genl_family.attrbuf;
+        *attr = genl_family_attrbuf(&tipc_genl_family);
         if (!*attr)
                 return -EOPNOTSUPP;