From 138118ec96cbfc303c1d7cc05fbb2caf8382c95b Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 9 May 2018 20:34:23 -0700 Subject: net/ipv6: Add fib6_lookup Add IPv6 equivalent to fib_lookup. Does a fib lookup, including rules, but returns a FIB entry, fib6_info, rather than a dst based rt6_info. fib6_lookup is any where from 140% (MULTIPLE_TABLES config disabled) to 60% faster than any of the dst based lookup methods (without custom rules) and 25% faster with custom rules (e.g., l3mdev rule). Since the lookup function has a completely different signature, fib6_rule_action is split into 2 paths: the existing one is renamed __fib6_rule_action and a new one for the fib6_info path is added. fib6_rule_action decides which to call based on the lookup_ptr. If it is fib6_table_lookup then the new path is taken. Caller must hold rcu lock as no reference is taken on the returned fib entry. Signed-off-by: David Ahern Acked-by: David S. Miller Signed-off-by: Daniel Borkmann --- include/net/ip6_fib.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index c70705f2647a..cc70f6da8462 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -376,6 +376,12 @@ struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6, const struct sk_buff *skb, int flags, pol_lookup_t lookup); +/* called with rcu lock held; can return error pointer + * caller needs to select path + */ +struct fib6_info *fib6_lookup(struct net *net, int oif, struct flowi6 *fl6, + int flags); + /* called with rcu lock held; caller needs to select path */ struct fib6_info *fib6_table_lookup(struct net *net, struct fib6_table *table, int oif, struct flowi6 *fl6, int strict); -- cgit v1.2.3-71-gd317