From: David Ahern <dsahern@gmail.com>
Date: Thu, 25 May 2017 10:42:37 -0700
Subject: net: ipv4: Save trie prefix to fib lookup result
Patch-mainline: v4.13-rc1
Git-commit: 6ffd903415320d68a528865296e4740da350785e
References: bsc#1112374

Prefix is needed for returning matching route spec on get route request.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 include/net/ip_fib.h |    1 +
 net/ipv4/fib_trie.c  |    1 +
 2 files changed, 2 insertions(+)

--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -136,6 +136,7 @@ struct fib_rule;
 
 struct fib_table;
 struct fib_result {
+	__be32		prefix;
 	unsigned char	prefixlen;
 	unsigned char	nh_sel;
 	unsigned char	type;
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1452,6 +1452,7 @@ found:
 			if (!(fib_flags & FIB_LOOKUP_NOREF))
 				atomic_inc(&fi->fib_clntref);
 
+			res->prefix = htonl(n->key);
 			res->prefixlen = KEYLENGTH - fa->fa_slen;
 			res->nh_sel = nhsel;
 			res->type = fa->fa_type;