ipmr, ip6mr: Make mfc_cache a common structure

mfc_cache and mfc6_cache are almost identical - the main difference is
in the origin/group addresses and comparison-key. Make a common
structure encapsulating most of the multicast routing logic  - mr_mfc
and convert both ipmr and ip6mr into using it.

For easy conversion [casting, in this case] mr_mfc has to be the first
field inside every multicast routing abstraction utilizing it.

Signed-off-by: Yuval Mintz <yuvalm@mellanox.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 22 deletions

diff --git a/include/linux/mroute6.h b/include/linux/mroute6.h
index d5c8dc155a42..6acf576fc135 100644
--- a/include/linux/mroute6.h
+++ b/include/linux/mroute6.h
@@ -71,7 +71,7 @@ struct mfc6_cache_cmp_arg {
 };
 
 struct mfc6_cache {
-	struct rhlist_head mnode;
+	struct mr_mfc _c;
 	union {
 		struct {
 			struct in6_addr mf6c_mcastgrp;
@@ -79,27 +79,6 @@ struct mfc6_cache {
 		};
 		struct mfc6_cache_cmp_arg cmparg;
 	};
-	mifi_t mf6c_parent;			/* Source interface		*/
-	int mfc_flags;				/* Flags on line		*/
-
-	union {
-		struct {
-			unsigned long expires;
-			struct sk_buff_head unresolved;	/* Unresolved buffers		*/
-		} unres;
-		struct {
-			unsigned long last_assert;
-			int minvif;
-			int maxvif;
-			unsigned long bytes;
-			unsigned long pkt;
-			unsigned long wrong_if;
-			unsigned long lastuse;
-			unsigned char ttls[MAXMIFS];	/* TTL thresholds		*/
-		} res;
-	} mfc_un;
-	struct list_head list;
-	struct rcu_head rcu;
 };
 
 #define MFC_STATIC		1