From: Ido Schimmel <ido...@mellanox.com>
The struct includes a 'skip_notify' flag that indicates if netlink
notifications to user space should be suppressed. As explained in commit
3b1137fe7482 ("net: ipv6: Change notifications for multipath add to
RTA_MULTIPATH"), this is useful to suppress per-nexthop RTM_NEWROUTE
notifications when an IPv6 multipath route is added / deleted. Instead,
one notification is sent for the entire multipath route.
This concept is also useful for in-kernel notifications. Sending one
in-kernel notification for the addition / deletion of an IPv6 multipath
route - instead of one per-nexthop - provides a significant increase in
the insertion / deletion rate to underlying devices.
Add a 'skip_notify_kernel' flag to suppress in-kernel notifications.
Signed-off-by: Ido Schimmel <ido...@mellanox.com>
Acked-by: Jiri Pirko <j...@mellanox.com>
---
include/net/netlink.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/net/netlink.h b/include/net/netlink.h
index ce66e43b9b6a..e4650e5b64a1 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -381,12 +381,14 @@ struct nla_policy {
* @nl_net: Network namespace
* @portid: Netlink PORTID of requesting application
* @skip_notify: Skip netlink notifications to user space
+ * @skip_notify_kernel: Skip selected in-kernel notifications
*/
struct nl_info {
struct nlmsghdr *nlh;
struct net *nl_net;
u32 portid;
- bool skip_notify;
+ u8 skip_notify:1,
+ skip_notify_kernel:1;
};
/**
--
2.20.1
