[RFC PATCH net-next 16/22] nexthop: Pass extack to register_nexthop_notifier()

[Ido Schimmel]

From: Ido Schimmel <ido...@nvidia.com>

This will be used by the next patch which extends the function to replay
all the existing nexthops to the notifier block being registered.

Device drivers will be able to pass extack to the function since it is
passed to them upon reload from devlink.

Signed-off-by: Ido Schimmel <ido...@nvidia.com>
---
 drivers/net/vxlan.c   | 3 ++-
 include/net/nexthop.h | 3 ++-
 net/ipv4/nexthop.c    | 3 ++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 29deedee6ef4..a850b39dd432 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -4717,7 +4717,8 @@ static __net_init int vxlan_init_net(struct net *net)
        for (h = 0; h < PORT_HASH_SIZE; ++h)
                INIT_HLIST_HEAD(&vn->sock_list[h]);
 
-       return register_nexthop_notifier(net, &vxlan_nexthop_notifier_block);
+       return register_nexthop_notifier(net, &vxlan_nexthop_notifier_block,
+                                        NULL);
 }
 
 static void vxlan_destroy_tunnels(struct net *net, struct list_head *head)
diff --git a/include/net/nexthop.h b/include/net/nexthop.h
index 6431ff8cdb89..c2dd20946825 100644
--- a/include/net/nexthop.h
+++ b/include/net/nexthop.h
@@ -145,7 +145,8 @@ struct nh_notifier_info {
        };
 };
 
-int register_nexthop_notifier(struct net *net, struct notifier_block *nb);
+int register_nexthop_notifier(struct net *net, struct notifier_block *nb,
+                             struct netlink_ext_ack *extack);
 int unregister_nexthop_notifier(struct net *net, struct notifier_block *nb);
 void nexthop_hw_flags_set(struct net *net, u32 id, bool offload, bool trap);
 
diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index 33f611bbce1f..b40c343ca969 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -2116,7 +2116,8 @@ static struct notifier_block nh_netdev_notifier = {
        .notifier_call = nh_netdev_event,
 };
 
-int register_nexthop_notifier(struct net *net, struct notifier_block *nb)
+int register_nexthop_notifier(struct net *net, struct notifier_block *nb,
+                             struct netlink_ext_ack *extack)
 {
        return blocking_notifier_chain_register(&net->nexthop.notifier_chain,
                                                nb);
-- 
2.26.2