[PATCH net-next v2 2/6] bridge: Add internal flags for neigh_forward_grat

[Danielle Ratson <danieller@nvidia.com>]

Add internal flags for the neigh_forward_grat feature:

- BR_NEIGH_FORWARD_GRAT: Port-level flag
- BR_VLFLAG_NEIGH_FORWARD_GRAT_ENABLED: Per-VLAN flag

These will be used to control whether gratuitous ARP and unsolicited NA
packets are forwarded when neighbor suppression is enabled.

Reviewed-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
---
 include/linux/if_bridge.h | 1 +
 net/bridge/br_private.h   | 1 +
 2 files changed, 2 insertions(+)

diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h
index c5fe3b2a53e8..ec9ffea1e46e 100644
--- a/include/linux/if_bridge.h
+++ b/include/linux/if_bridge.h
@@ -61,6 +61,7 @@ struct br_ip_list {
 #define BR_PORT_LOCKED		BIT(21)
 #define BR_PORT_MAB		BIT(22)
 #define BR_NEIGH_VLAN_SUPPRESS	BIT(23)
+#define BR_NEIGH_FORWARD_GRAT	BIT(24)
 
 #define BR_DEFAULT_AGEING_TIME	(300 * HZ)
 
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index bed1b1d9b282..3bc15978a8df 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -183,6 +183,7 @@ enum {
 	BR_VLFLAG_GLOBAL_MCAST_ENABLED = BIT(3),
 	BR_VLFLAG_NEIGH_SUPPRESS_ENABLED = BIT(4),
 	BR_VLFLAG_TAGGING_BY_SWITCHDEV = BIT(5),
+	BR_VLFLAG_NEIGH_FORWARD_GRAT_ENABLED = BIT(6),
 };
 
 /**
-- 
2.51.0