From 889cd83cbe411dda854429f3223ab2d31a860a4a Mon Sep 17 00:00:00 2001
From: Yuval Mintz <yuvalm@mellanox.com>
Date: Wed, 28 Feb 2018 23:29:38 +0200
Subject: [PATCH] ip6mr: Remove MFC_NOTIFY and refactor flags

MFC_NOTIFY exists in ip6mr, probably as some legacy code
[was already removed for ipmr in commit
06bd6c0370bb ("net: ipmr: remove unused MFC_NOTIFY flag and make the flags enum").
Remove it from ip6mr as well, and move the enum into a common file;
Notice MFC_OFFLOAD is currently only used by ipmr.

Signed-off-by: Yuval Mintz <yuvalm@mellanox.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/mroute.h      | 9 ---------
 include/linux/mroute6.h     | 3 ---
 include/linux/mroute_base.h | 9 +++++++++
 net/ipv6/ip6mr.c            | 3 ---
 4 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/include/linux/mroute.h b/include/linux/mroute.h
index 63b36e6c72a03b..7ed82e4f11b353 100644
--- a/include/linux/mroute.h
+++ b/include/linux/mroute.h
@@ -65,15 +65,6 @@ struct vif_entry_notifier_info {
 
 #define VIFF_STATIC 0x8000
 
-/* mfc_flags:
- * MFC_STATIC - the entry was added statically (not by a routing daemon)
- * MFC_OFFLOAD - the entry was offloaded to the hardware
- */
-enum {
-	MFC_STATIC = BIT(0),
-	MFC_OFFLOAD = BIT(1),
-};
-
 struct mfc_cache_cmp_arg {
 	__be32 mfc_mcastgrp;
 	__be32 mfc_origin;
diff --git a/include/linux/mroute6.h b/include/linux/mroute6.h
index 6acf576fc1359f..1ac38e6819f540 100644
--- a/include/linux/mroute6.h
+++ b/include/linux/mroute6.h
@@ -81,9 +81,6 @@ struct mfc6_cache {
 	};
 };
 
-#define MFC_STATIC		1
-#define MFC_NOTIFY		2
-
 #define MFC_ASSERT_THRESH (3*HZ)		/* Maximal freq. of asserts */
 
 struct rtmsg;
diff --git a/include/linux/mroute_base.h b/include/linux/mroute_base.h
index cfaec9bd2d3c7a..f40202b16dae00 100644
--- a/include/linux/mroute_base.h
+++ b/include/linux/mroute_base.h
@@ -45,6 +45,15 @@ struct vif_device {
 
 #define VIF_EXISTS(_mrt, _idx) (!!((_mrt)->vif_table[_idx].dev))
 
+/* mfc_flags:
+ * MFC_STATIC - the entry was added statically (not by a routing daemon)
+ * MFC_OFFLOAD - the entry was offloaded to the hardware
+ */
+enum {
+	MFC_STATIC = BIT(0),
+	MFC_OFFLOAD = BIT(1),
+};
+
 /**
  * struct mr_mfc - common multicast routing entries
  * @mnode: rhashtable list
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index ddd9e6bba499ff..c3b3f1c381e156 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -2203,9 +2203,6 @@ int ip6mr_get_route(struct net *net, struct sk_buff *skb, struct rtmsg *rtm,
 		return err;
 	}
 
-	if (rtm->rtm_flags & RTM_F_NOTIFY)
-		cache->_c.mfc_flags |= MFC_NOTIFY;
-
 	err = __ip6mr_fill_mroute(mrt, skb, cache, rtm);
 	read_unlock(&mrt_lock);
 	return err;