From: Ido Schimmel <idosch@mellanox.com>
Date: Mon, 23 Dec 2019 15:28:14 +0200
Subject: ipv6: Notify route if replacing currently offloaded one
Patch-mainline: v5.6-rc1
Git-commit: 51bf7f387fdfe5ec8c33734b3124ccec83c8d0c3
References: bsc#1176774

Similar to the corresponding IPv4 patch, only notify the new route if it
is replacing the currently offloaded one. Meaning, the one pointed to by
'fn->leaf'.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 net/ipv6/ip6_fib.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -1231,6 +1231,13 @@ add:
 		}
 
 		if (!info->skip_notify_kernel) {
+			enum fib_event_type fib_event;
+
+			fib_event = FIB_EVENT_ENTRY_REPLACE_TMP;
+			if (ins == &fn->leaf)
+				err = call_fib6_entry_notifiers(info->nl_net,
+								fib_event, rt,
+								extack);
 			err = call_fib6_entry_notifiers(info->nl_net,
 							FIB_EVENT_ENTRY_REPLACE,
 							rt, extack);