net: rtnetlink: plumb extended ack to doit function

Add netlink_ext_ack arg to rtnl_doit_func. Pass extack arg to nlmsg_parse
for doit functions that call it directly.

This is the first step to using extended error reporting in rtnetlink.
>From here individual subsystems can be updated to set netlink_ext_ack as
needed.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 993626a7fc3b..b0845480a3ae 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -569,7 +569,8 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br,
         return ret;
 }
 
-static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh)
+static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
+                      struct netlink_ext_ack *extack)
 {
         struct net *net = sock_net(skb->sk);
         struct net_bridge_vlan_group *vg;
@@ -663,7 +664,8 @@ unlock:
         return err;
 }
 
-static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh)
+static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
+                      struct netlink_ext_ack *extack)
 {
         struct net *net = sock_net(skb->sk);
         struct net_bridge_vlan_group *vg;