[IPV4]: Increase number of possible routing tables to 2^32

Increase the number of possible routing tables to 2^32 by replacing the
fixed sized array of pointers by a hash table and replacing iterations
over all possible table IDs by hash table walking.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index 0330b9cc4b58..ce185ac6f260 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -172,8 +172,8 @@ static struct fib_table *fib_empty_table(void)
         u32 id;
 
         for (id = 1; id <= RT_TABLE_MAX; id++)
-                if (fib_tables[id] == NULL)
-                        return __fib_new_table(id);
+                if (fib_get_table(id) == NULL)
+                        return fib_new_table(id);
         return NULL;
 }