netdev - [PATCH net-next 5/8] net: ipv4: Save trie prefix to fib lookup result

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Message-Id: <1495649951-30417-6-git-send-email-roopa@cumulusnetworks.com>
Date:   Wed, 24 May 2017 11:19:08 -0700
From:   Roopa Prabhu <roopa@...ulusnetworks.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, dsahern@...il.com,
        nikolay@...ulusnetworks.com
Subject: [PATCH net-next 5/8] net: ipv4: Save trie prefix to fib lookup result

From: David Ahern <dsahern@...il.com>

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

Signed-off-by: David Ahern <dsahern@...il.com>
Signed-off-by: Roopa Prabhu <roopa@...ulusnetworks.com>
---
 include/net/ip_fib.h | 1 +
 net/ipv4/fib_trie.c  | 1 +
 2 files changed, 2 insertions(+)

diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 42e8b8f..25f5c51 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -136,6 +136,7 @@ struct fib_info {
 
 struct fib_table;
 struct fib_result {
+	__be32		prefix;
 	unsigned char	prefixlen;
 	unsigned char	nh_sel;
 	unsigned char	type;
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 6d0f6c79..6e9df7d 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1452,6 +1452,7 @@ int fib_table_lookup(struct fib_table *tb, const struct flowi4 *flp,
 			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;
-- 
1.9.1