From: David Ahern <dsa@cumulusnetworks.com>
Date: Thu, 27 Aug 2015 23:07:03 +0000 (-0700)
Subject: net: Add support for VRFs to inetpeer cache
X-Git-Tag: omap-for-v4.3/fixes-rc1~110^2~50^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=192132b9a034d87566294be0fba5f8f75c2cf16b;p=pandora-kernel.git

net: Add support for VRFs to inetpeer cache

inetpeer caches based on address only, so duplicate IP addresses within
a namespace return the same cached entry. Enhance the ipv4 address key
to contain both the IPv4 address and VRF device index.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index e34f98aa93b1..4a6009d4486b 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -15,11 +15,17 @@
 #include <net/ipv6.h>
 #include <linux/atomic.h>
 
+/* IPv4 address key for cache lookups */
+struct ipv4_addr_key {
+	__be32	addr;
+	int	vif;
+};
+
 #define INETPEER_MAXKEYSZ   (sizeof(struct in6_addr) / sizeof(u32))
 
 struct inetpeer_addr {
 	union {
-		__be32			a4;
+		struct ipv4_addr_key	a4;
 		struct in6_addr		a6;
 		u32			key[INETPEER_MAXKEYSZ];
 	};
@@ -71,13 +77,13 @@ void inet_initpeers(void) __init;
 
 static inline void inetpeer_set_addr_v4(struct inetpeer_addr *iaddr, __be32 ip)
 {
-	iaddr->a4 = ip;
+	iaddr->a4.addr = ip;
 	iaddr->family = AF_INET;
 }
 
 static inline __be32 inetpeer_get_addr_v4(struct inetpeer_addr *iaddr)
 {
-	return iaddr->a4;
+	return iaddr->a4.addr;
 }
 
 static inline void inetpeer_set_addr_v6(struct inetpeer_addr *iaddr,
@@ -99,11 +105,12 @@ struct inet_peer *inet_getpeer(struct inet_peer_base *base,
 
 static inline struct inet_peer *inet_getpeer_v4(struct inet_peer_base *base,
 						__be32 v4daddr,
-						int create)
+						int vif, int create)
 {
 	struct inetpeer_addr daddr;
 
-	daddr.a4 = v4daddr;
+	daddr.a4.addr = v4daddr;
+	daddr.a4.vif = vif;
 	daddr.family = AF_INET;
 	return inet_getpeer(base, &daddr, create);
 }
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