diff options
| -rw-r--r-- | include/linux/fib_rules.h | 1 | ||||
| -rw-r--r-- | net/core/fib_rules.c | 24 |
2 files changed, 18 insertions, 7 deletions
diff --git a/include/linux/fib_rules.h b/include/linux/fib_rules.h index adcdfbdd14d..8270aac2aa5 100644 --- a/include/linux/fib_rules.h +++ b/include/linux/fib_rules.h @@ -6,6 +6,7 @@ /* rule is permanent, and cannot be deleted */ #define FIB_RULE_PERMANENT 1 +#define FIB_RULE_INVERT 2 struct fib_rule_hdr { diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c index da91bf2e615..4148e274a20 100644 --- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -107,6 +107,22 @@ out: EXPORT_SYMBOL_GPL(fib_rules_unregister); +static int fib_rule_match(struct fib_rule *rule, struct fib_rules_ops *ops, + struct flowi *fl, int flags) +{ + int ret = 0; + + if (rule->ifindex && (rule->ifindex != fl->iif)) + goto out; + + if ((rule->mark ^ fl->mark) & rule->mark_mask) + goto out; + + ret = ops->match(rule, fl, flags); +out: + return (rule->flags & FIB_RULE_INVERT) ? !ret : ret; +} + int fib_rules_lookup(struct fib_rules_ops *ops, struct flowi *fl, int flags, struct fib_lookup_arg *arg) { @@ -116,13 +132,7 @@ int fib_rules_lookup(struct fib_rules_ops *ops, struct flowi *fl, rcu_read_lock(); list_for_each_entry_rcu(rule, ops->rules_list, list) { - if (rule->ifindex && (rule->ifindex != fl->iif)) - continue; - - if ((rule->mark ^ fl->mark) & rule->mark_mask) - continue; - - if (!ops->match(rule, fl, flags)) + if (!fib_rule_match(rule, ops, fl, flags)) continue; err = ops->action(rule, fl, flags, arg); |