From bc67a0daf8f3bc6fa8fcb68090f3c444de7f951c Mon Sep 17 00:00:00 2001
From: Yuval Mintz <yuvalm@mellanox.com>
Date: Mon, 26 Mar 2018 15:01:31 +0300
Subject: ipmr: Make vif fib notifiers common

The fib-notifiers are tightly coupled with the vif_device which is
already common. Move the notifier struct definition and helpers to the
common file; Currently they're only used by ipmr.

Signed-off-by: Yuval Mintz <yuvalm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/mroute_base.h | 53 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

(limited to 'include/linux/mroute_base.h')

diff --git a/include/linux/mroute_base.h b/include/linux/mroute_base.h
index c2560cb50f1d..23326f5402f3 100644
--- a/include/linux/mroute_base.h
+++ b/include/linux/mroute_base.h
@@ -6,6 +6,7 @@
 #include <linux/spinlock.h>
 #include <net/net_namespace.h>
 #include <net/sock.h>
+#include <net/fib_notifier.h>
 
 /**
  * struct vif_device - interface representor for multicast routing
@@ -36,6 +37,58 @@ struct vif_device {
 	__be32 local, remote;
 };
 
+struct vif_entry_notifier_info {
+	struct fib_notifier_info info;
+	struct net_device *dev;
+	unsigned short vif_index;
+	unsigned short vif_flags;
+	u32 tb_id;
+};
+
+static inline int mr_call_vif_notifier(struct notifier_block *nb,
+				       struct net *net,
+				       unsigned short family,
+				       enum fib_event_type event_type,
+				       struct vif_device *vif,
+				       unsigned short vif_index, u32 tb_id)
+{
+	struct vif_entry_notifier_info info = {
+		.info = {
+			.family = family,
+			.net = net,
+		},
+		.dev = vif->dev,
+		.vif_index = vif_index,
+		.vif_flags = vif->flags,
+		.tb_id = tb_id,
+	};
+
+	return call_fib_notifier(nb, net, event_type, &info.info);
+}
+
+static inline int mr_call_vif_notifiers(struct net *net,
+					unsigned short family,
+					enum fib_event_type event_type,
+					struct vif_device *vif,
+					unsigned short vif_index, u32 tb_id,
+					unsigned int *ipmr_seq)
+{
+	struct vif_entry_notifier_info info = {
+		.info = {
+			.family = family,
+			.net = net,
+		},
+		.dev = vif->dev,
+		.vif_index = vif_index,
+		.vif_flags = vif->flags,
+		.tb_id = tb_id,
+	};
+
+	ASSERT_RTNL();
+	(*ipmr_seq)++;
+	return call_fib_notifiers(net, event_type, &info.info);
+}
+
 #ifndef MAXVIFS
 /* This one is nasty; value is defined in uapi using different symbols for
  * mroute and morute6 but both map into same 32.
-- 
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