diff options
Diffstat (limited to 'fwd.c')
| -rw-r--r-- | fwd.c | 19 |
1 files changed, 18 insertions, 1 deletions
@@ -432,14 +432,31 @@ static bool fwd_rule_match(const struct fwd_rule *rule, * fwd_rule_search() - Find a rule which matches a prospective flow * @fwd: Forwarding table * @ini: Initiating side flow information + * @hint: Index of the rule in table, if known, otherwise FWD_NO_HINT * * Returns: first matching rule, or NULL if there is none */ const struct fwd_rule *fwd_rule_search(const struct fwd_ports *fwd, - const struct flowside *ini) + const struct flowside *ini, + int hint) { unsigned i; + if (hint >= 0) { + char ostr[INANY_ADDRSTRLEN], rstr[INANY_ADDRSTRLEN]; + const struct fwd_rule *rule = &fwd->rules[hint]; + + ASSERT((unsigned)hint < fwd->count); + if (fwd_rule_match(rule, ini)) + return rule; + + debug("Incorrect rule hint: %s:%hu does not match %s:%hu-%hu", + inany_ntop(&ini->oaddr, ostr, sizeof(ostr)), ini->oport, + inany_ntop(fwd_rule_addr(rule), rstr, sizeof(rstr)), + rule->first, rule->last); + return NULL; + } + for (i = 0; i < fwd->count; i++) { if (fwd_rule_match(&fwd->rules[i], ini)) return &fwd->rules[i]; |