Commit:     bd566e7525b5986864e8d6eb5b67640abcd284a9
Parent:     b3652b2dc5ec6ccd946ae9136b30c6babb81305a
Author:     Joonwoo Park <[EMAIL PROTECTED]>
AuthorDate: Fri Jan 18 03:44:48 2008 -0800
Committer:  David S. Miller <[EMAIL PROTECTED]>
CommitDate: Sun Jan 20 20:31:37 2008 -0800

    [IPV4] fib_hash: fix duplicated route issue
    The fib allows making identical routes with 'ip route replace'.
    This patch makes the fib return -EEXIST if replacement would cause 
    Signed-off-by: Joonwoo Park <[EMAIL PROTECTED]>
    Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
 net/ipv4/fib_hash.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c
index 527a6e0..99071d7 100644
--- a/net/ipv4/fib_hash.c
+++ b/net/ipv4/fib_hash.c
@@ -444,6 +444,9 @@ static int fn_hash_insert(struct fib_table *tb, struct 
fib_config *cfg)
                        struct fib_info *fi_drop;
                        u8 state;
+                       if (fi->fib_treeref > 1)
+                               goto out;
                        fi_drop = fa->fa_info;
                        fa->fa_info = fi;
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