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ipv4: fib table algorithm performance improvement

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The FIB algorithim for IPV4 is set at compile time, but kernel goes through
the overhead of function call indirection at runtime. Save some
cycles by turning the indirect calls to direct calls to either
hash or trie code.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2009-09-20 10:35:36 +00:00 • committed by David S. Miller
parent 977750076d
commit 16c6cf8bb4
5 changed files with 48 additions and 56 deletions
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2
net/ipv4/fib_rules.c
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@ -94,7 +94,7 @@ static int fib4_rule_action(struct fib_rule *rule, struct flowi *flp,
if ((tbl = fib_get_table(rule->fr_net, rule->table)) == NULL)
goto errout;
err = tbl->tb_lookup(tbl, flp, (struct fib_result *) arg->result);
err = fib_table_lookup(tbl, flp, (struct fib_result *) arg->result);
if (err > 0)
err = -EAGAIN;
errout: