diff options
Diffstat (limited to 'sysdep/unix/krt.c')
| -rw-r--r-- | sysdep/unix/krt.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c index 6208f68..a60e7f9 100644 --- a/sysdep/unix/krt.c +++ b/sysdep/unix/krt.c @@ -151,6 +151,49 @@ kif_shutdown(struct proto *P) return PS_DOWN; } + +static inline int +prefer_scope(struct ifa *a, struct ifa *b) +{ return (a->scope > SCOPE_LINK) && (b->scope <= SCOPE_LINK); } + +static inline int +prefer_addr(struct ifa *a, struct ifa *b) +{ return ipa_compare(a->ip, b->ip) < 0; } + +static inline struct ifa * +find_preferred_ifa(struct iface *i, ip_addr prefix, ip_addr mask) +{ + struct ifa *a, *b = NULL; + + WALK_LIST(a, i->addrs) + { + if (!(a->flags & IA_SECONDARY) && + ipa_equal(ipa_and(a->ip, mask), prefix) && + (!b || prefer_scope(a, b) || prefer_addr(a, b))) + b = a; + } + + return b; +} + +struct ifa * +kif_choose_primary(struct iface *i) +{ + struct kif_config *cf = (struct kif_config *) (kif_proto->p.cf); + struct kif_primary_item *it; + struct ifa *a; + + WALK_LIST(it, cf->primary) + { + if (!it->pattern || patmatch(it->pattern, i->name)) + if (a = find_preferred_ifa(i, it->prefix, ipa_mkmask(it->pxlen))) + return a; + } + + return find_preferred_ifa(i, IPA_NONE, IPA_NONE); +} + + static int kif_reconfigure(struct proto *p, struct proto_config *new) { @@ -159,6 +202,7 @@ kif_reconfigure(struct proto *p, struct proto_config *new) if (!kif_params_same(&o->iface, &n->iface)) return 0; + if (o->scan_time != n->scan_time) { tm_stop(kif_scan_timer); @@ -166,6 +210,18 @@ kif_reconfigure(struct proto *p, struct proto_config *new) kif_scan(kif_scan_timer); tm_start(kif_scan_timer, n->scan_time); } + + if (!EMPTY_LIST(o->primary) || !EMPTY_LIST(n->primary)) + { + /* This is hack, we have to update a configuration + * to the new value just now, because it is used + * for recalculation of primary addresses. + */ + p->cf = new; + + ifa_recalc_all_primary_addresses(); + } + return 1; } |