diff options
Diffstat (limited to 'nest')
| -rw-r--r-- | nest/protocol.h | 2 | ||||
| -rw-r--r-- | nest/rt-table.c | 19 |
2 files changed, 21 insertions, 0 deletions
diff --git a/nest/protocol.h b/nest/protocol.h index 2e64112..768792f 100644 --- a/nest/protocol.h +++ b/nest/protocol.h @@ -135,11 +135,13 @@ struct proto { * Routing entry hooks (called only for rte's belonging to this protocol): * * rte_better Compare two rte's and decide which one is better (1=first, 0=second). + * rte_same Compare two rte's and decide whether they are identical (1=yes, 0=no). * rte_insert Called whenever a rte is inserted to a routing table. * rte_remove Called whenever a rte is removed from the routing table. */ int (*rte_better)(struct rte *, struct rte *); + int (*rte_same)(struct rte *, struct rte *); void (*rte_insert)(struct network *, struct rte *); void (*rte_remove)(struct network *, struct rte *); diff --git a/nest/rt-table.c b/nest/rt-table.c index 832e9ef..4214d07 100644 --- a/nest/rt-table.c +++ b/nest/rt-table.c @@ -272,6 +272,17 @@ rte_free_quick(rte *e) sl_free(rte_slab, e); } +static int +rte_same(rte *x, rte *y) +{ + return + x->attrs == y->attrs && + x->flags == y->flags && + x->pflags == y->pflags && + x->pref == y->pref && + (!x->attrs->proto->rte_same || x->attrs->proto->rte_same(x, y)); +} + static void rte_recalculate(rtable *table, net *net, struct proto *p, rte *new, ea_list *tmpa) { @@ -284,6 +295,14 @@ rte_recalculate(rtable *table, net *net, struct proto *p, rte *new, ea_list *tmp { if (old->attrs->proto == p) { + if (rte_same(old, new)) + { + /* No changes, ignore the new route */ + rte_trace_in(D_ROUTES, p, new, "ignored"); + rte_free_quick(new); + old->lastmod = now; + return; + } *k = old->next; break; } |