netdev - [PATCH net-next 2/7] net: ipmr: remove unused MFC

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Date:	Thu, 26 Nov 2015 15:23:45 +0100
From:	Nikolay Aleksandrov <razor@...ckwall.org>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net,
	Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Subject: [PATCH net-next 2/7] net: ipmr: remove unused MFC_NOTIFY flag and make the flags enum

From: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>

MFC_NOTIFY was introduced in kernel 2.1.68 but afaik it hasn't been used
and I couldn't find any users currently so just remove it. Only
MFC_STATIC is left, so move it into an enum, add a description and use
BIT().

Signed-off-by: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
---
 include/linux/mroute.h | 10 +++++++---
 net/ipv4/ipmr.c        |  2 --
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/include/linux/mroute.h b/include/linux/mroute.h
index 79aaa9fc1a15..fa66ebc1fed6 100644
--- a/include/linux/mroute.h
+++ b/include/linux/mroute.h
@@ -64,6 +64,13 @@ struct vif_device {
 
 #define VIFF_STATIC 0x8000
 
+/* mfc_flags:
+ * MFC_STATIC - the entry was added statically (not by a routing daemon)
+ */
+enum {
+	MFC_STATIC = BIT(0),
+};
+
 struct mfc_cache {
 	struct list_head list;
 	__be32 mfc_mcastgrp;			/* Group the entry belongs to 	*/
@@ -89,9 +96,6 @@ struct mfc_cache {
 	struct rcu_head	rcu;
 };
 
-#define MFC_STATIC		1
-#define MFC_NOTIFY		2
-
 #define MFC_LINES		64
 
 #ifdef __BIG_ENDIAN
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index a2d248d9c35c..a74e61883b8f 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -2199,8 +2199,6 @@ int ipmr_get_route(struct net *net, struct sk_buff *skb,
 	}
 
 	read_lock(&mrt_lock);
-	if (!nowait && (rtm->rtm_flags & RTM_F_NOTIFY))
-		cache->mfc_flags |= MFC_NOTIFY;
 	err = __ipmr_fill_mroute(mrt, skb, cache, rtm);
 	read_unlock(&mrt_lock);
 	rcu_read_unlock();
-- 
2.4.3

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