diff options
Diffstat (limited to 'nest')
| -rw-r--r-- | nest/iface.h | 1 | ||||
| -rw-r--r-- | nest/neighbor.c | 36 |
2 files changed, 28 insertions, 9 deletions
diff --git a/nest/iface.h b/nest/iface.h index 697ea543..56710e4a 100644 --- a/nest/iface.h +++ b/nest/iface.h @@ -108,6 +108,7 @@ typedef struct neighbor { node n; /* Node in global neighbor list */ node if_n; /* Node in per-interface neighbor list */ ip_addr addr; /* Address of the neighbor */ + struct ifa *ifa; /* Ifa on related iface */ struct iface *iface; /* Interface it's connected to */ struct proto *proto; /* Protocol this belongs to */ void *data; /* Protocol-specific data */ diff --git a/nest/neighbor.c b/nest/neighbor.c index 11a980b2..48b6b6ac 100644 --- a/nest/neighbor.c +++ b/nest/neighbor.c @@ -56,14 +56,20 @@ neigh_hash(struct proto *p, ip_addr *a) } static int -if_connected(ip_addr *a, struct iface *i) /* -1=error, 1=match, 0=no match */ +if_connected(ip_addr *a, struct iface *i, struct ifa **ap) { struct ifa *b; if (!(i->flags & IF_UP)) + { + *ap = NULL; return -1; + } + WALK_LIST(b, i->addrs) { + *ap = b; + if (ipa_equal(*a, b->ip)) return SCOPE_HOST; if (b->flags & IA_PEER) @@ -79,13 +85,18 @@ if_connected(ip_addr *a, struct iface *i) /* -1=error, 1=match, 0=no match */ if ((b->pxlen < (BITS_PER_IP_ADDRESS - 1)) && (ipa_equal(*a, b->prefix) || /* Network address */ ipa_equal(*a, b->brd))) /* Broadcast */ + { + *ap = NULL; return -1; + } #endif return b->scope; } } } + + *ap = NULL; return -1; } @@ -117,6 +128,7 @@ neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags) int class, scope = -1; unsigned int h = neigh_hash(p, a); struct iface *i; + struct ifa *addr; WALK_LIST(n, neigh_hash_table[h]) /* Search the cache */ if (n->proto == p && ipa_equal(*a, n->addr) && (!ifa || (ifa == n->iface))) @@ -132,7 +144,7 @@ neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags) if (ifa) { - scope = if_connected(a, ifa); + scope = if_connected(a, ifa, &addr); flags |= NEF_BIND; if ((scope < 0) && (flags & NEF_ONLINK)) @@ -140,7 +152,7 @@ neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags) } else WALK_LIST(i, iface_list) - if ((scope = if_connected(a, i)) >= 0) + if ((scope = if_connected(a, i, &addr)) >= 0) { ifa = i; break; @@ -165,6 +177,7 @@ neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags) scope = -1; } n->iface = ifa; + n->ifa = addr; n->proto = p; n->data = NULL; n->aux = 0; @@ -216,9 +229,10 @@ neigh_dump_all(void) } static void -neigh_up(neighbor *n, struct iface *i, int scope) +neigh_up(neighbor *n, struct iface *i, int scope, struct ifa *a) { n->iface = i; + n->ifa = a; n->scope = scope; add_tail(&i->neighbors, &n->if_n); rem_node(&n->n); @@ -235,6 +249,7 @@ neigh_down(neighbor *n) rem_node(&n->if_n); if (! (n->flags & NEF_BIND)) n->iface = NULL; + n->ifa = NULL; n->scope = -1; if (n->proto->neigh_notify && n->proto->core_state != FS_FLUSHING) n->proto->neigh_notify(n); @@ -245,13 +260,14 @@ neigh_down(neighbor *n) /* Respawn neighbor if there is another matching prefix */ struct iface *i; + struct ifa *a; int scope; if (!n->iface) WALK_LIST(i, iface_list) - if ((scope = if_connected(&n->addr, i)) >= 0) + if ((scope = if_connected(&n->addr, i, &a)) >= 0) { - neigh_up(n, i, scope); + neigh_up(n, i, scope, a); return; } } @@ -272,13 +288,14 @@ neigh_down(neighbor *n) void neigh_if_up(struct iface *i) { + struct ifa *a; neighbor *n, *next; int scope; WALK_LIST_DELSAFE(n, next, sticky_neigh_list) if ((!n->iface || n->iface == i) && - ((scope = if_connected(&n->addr, i)) >= 0)) - neigh_up(n, i, scope); + ((scope = if_connected(&n->addr, i, &a)) >= 0)) + neigh_up(n, i, scope, a); } /** @@ -339,8 +356,9 @@ neigh_ifa_update(struct ifa *a) /* Remove all neighbors whose scope has changed */ WALK_LIST_DELSAFE(x, y, i->neighbors) { + struct ifa *aa; neighbor *n = SKIP_BACK(neighbor, if_n, x); - if (if_connected(&n->addr, i) != n->scope) + if (if_connected(&n->addr, i, &aa) != n->scope) neigh_down(n); } |