From: Joonwoo Park <joonwpark81@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: Joonwoo Park <joonwpark81@gmail.com>,
linux-netdev <netdev@vger.kernel.org>,
Stephen Hemminger <stephen.hemminger@vyatta.com>,
Alexander Zubkov <green@msu.ru>
Subject: [PATCH 2/2] [IPV4] fib_trie: fix duplicated route issue
Date: Wed, 16 Jan 2008 20:13:49 +0900 [thread overview]
Message-ID: <120048202988-git-send-email-joonwpark81@gmail.com> (raw)
http://bugzilla.kernel.org/show_bug.cgi?id=9493
The fib allows making identical routes with 'ip route replace'.
This patch makes the fib return -EEXIST if replacement would cause duplication.
Signed-off-by: Joonwoo Park <joonwpark81@gmail.com>
---
net/ipv4/fib_trie.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 8d8c291..1010b46 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1214,6 +1214,9 @@ static int fn_trie_insert(struct fib_table *tb, struct fib_config *cfg)
struct fib_info *fi_drop;
u8 state;
+ if (fi->fib_treeref > 1)
+ goto out;
+
err = -ENOBUFS;
new_fa = kmem_cache_alloc(fn_alias_kmem, GFP_KERNEL);
if (new_fa == NULL)
--
1.5.3.rc5
next reply other threads:[~2008-01-16 11:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-16 11:13 Joonwoo Park [this message]
2008-01-18 11:45 ` [PATCH 2/2] [IPV4] fib_trie: fix duplicated route issue David Miller
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