---

yaml
---
r: 111993
b: refs/heads/master
c: a210d01
h: refs/heads/master
i:
  111991: 0b022cd
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4edd87ad5cad8e159e0db3ce3131b3d97219c9cd
+refs/heads/master: a210d01ae3ee006b59e54e772a7f212486e0f021

trunk/include/net/flow.h

@@ -47,6 +47,8 @@ struct flowi {
 #define fl4_scope	nl_u.ip4_u.scope
 
 	__u8	proto;
+	__u8	flags;
+#define FLOWI_FLAG_ANYSRC 0x01
 	union {
 		struct {
 			__be16	sport;

trunk/net/ipv4/route.c

@@ -2361,11 +2361,6 @@ static int ip_route_output_slow(struct net *net, struct rtable **rp,
 		    ipv4_is_zeronet(oldflp->fl4_src))
 			goto out;
 
-		/* It is equivalent to inet_addr_type(saddr) == RTN_LOCAL */
-		dev_out = ip_dev_find(net, oldflp->fl4_src);
-		if (dev_out == NULL)
-			goto out;
-
 		/* I removed check for oif == dev_out->oif here.
 		   It was wrong for two reasons:
 		   1. ip_dev_find(net, saddr) can return wrong iface, if saddr
@@ -2377,6 +2372,11 @@ static int ip_route_output_slow(struct net *net, struct rtable **rp,
 		if (oldflp->oif == 0
 		    && (ipv4_is_multicast(oldflp->fl4_dst) ||
 			oldflp->fl4_dst == htonl(0xFFFFFFFF))) {
+			/* It is equivalent to inet_addr_type(saddr) == RTN_LOCAL */
+			dev_out = ip_dev_find(net, oldflp->fl4_src);
+			if (dev_out == NULL)
+				goto out;
+
 			/* Special hack: user can direct multicasts
 			   and limited broadcast via necessary interface
 			   without fiddling with IP_MULTICAST_IF or IP_PKTINFO.
@@ -2395,9 +2395,15 @@ static int ip_route_output_slow(struct net *net, struct rtable **rp,
 			fl.oif = dev_out->ifindex;
 			goto make_route;
 		}
-		if (dev_out)
+
+		if (!(oldflp->flags & FLOWI_FLAG_ANYSRC)) {
+			/* It is equivalent to inet_addr_type(saddr) == RTN_LOCAL */
+			dev_out = ip_dev_find(net, oldflp->fl4_src);
+			if (dev_out == NULL)
+				goto out;
 			dev_put(dev_out);
-		dev_out = NULL;
+			dev_out = NULL;
+		}
 	}