diff options
Diffstat (limited to 'zebra/zebra_rib.c')
| -rw-r--r-- | zebra/zebra_rib.c | 93 |
1 files changed, 88 insertions, 5 deletions
diff --git a/zebra/zebra_rib.c b/zebra/zebra_rib.c index f7f4d0a2..2fa439c0 100644 --- a/zebra/zebra_rib.c +++ b/zebra/zebra_rib.c @@ -232,7 +232,7 @@ nexthop_ipv4_add (struct rib *rib, struct in_addr *ipv4, struct in_addr *src) return nexthop; } -static struct nexthop * +struct nexthop * nexthop_ipv4_ifindex_add (struct rib *rib, struct in_addr *ipv4, struct in_addr *src, unsigned int ifindex) { @@ -1279,14 +1279,30 @@ rib_meta_queue_add (struct meta_queue *mq, struct route_node *rn) static void rib_queue_add (struct zebra_t *zebra, struct route_node *rn) { + char buf[INET_ADDRSTRLEN]; + assert (zebra && rn); if (IS_ZEBRA_DEBUG_RIB_Q) + inet_ntop (AF_INET, &rn->p.u.prefix, buf, INET_ADDRSTRLEN); + + /* Pointless to queue a route_node with no RIB entries to add or remove */ + if (!rn->info) { - char buf[INET6_ADDRSTRLEN]; + zlog_debug ("%s: called for route_node (%p, %d) with no ribs", + __func__, rn, rn->lock); + zlog_backtrace(LOG_DEBUG); + return; + } + + if (IS_ZEBRA_DEBUG_RIB_Q) + zlog_info ("%s: %s/%d: work queue added", __func__, buf, rn->p.prefixlen); - zlog_info ("%s: %s/%d: work queue added", __func__, - inet_ntop (rn->p.family, &rn->p.u.prefix, buf, INET6_ADDRSTRLEN), - rn->p.prefixlen); + assert (zebra); + + if (zebra->ribq == NULL) + { + zlog_err ("%s: work_queue does not exist!", __func__); + return; } /* @@ -1301,6 +1317,11 @@ rib_queue_add (struct zebra_t *zebra, struct route_node *rn) work_queue_add (zebra->ribq, zebra->mq); rib_meta_queue_add (zebra->mq, rn); + + if (IS_ZEBRA_DEBUG_RIB_Q) + zlog_debug ("%s: %s/%d: rn %p queued", __func__, buf, rn->p.prefixlen, rn); + + return; } /* Create new meta queue. @@ -1328,6 +1349,8 @@ meta_queue_new (void) static void rib_queue_init (struct zebra_t *zebra) { + assert (zebra); + if (! (zebra->ribq = work_queue_new (zebra->master, "route_node processing"))) { @@ -1343,7 +1366,11 @@ rib_queue_init (struct zebra_t *zebra) zebra->ribq->spec.hold = rib_process_hold_time; if (!(zebra->mq = meta_queue_new ())) + { zlog_err ("%s: could not initialise meta queue!", __func__); + return; + } + return; } /* RIB updates are processed via a queue of pointers to route_nodes. @@ -2893,6 +2920,62 @@ rib_sweep_route (void) rib_sweep_table (vrf_table (AFI_IP, SAFI_UNICAST, 0)); rib_sweep_table (vrf_table (AFI_IP6, SAFI_UNICAST, 0)); } + +/* Delete routes learned from a given client. */ +/* TODO(wsun) May need to split the sweep process into multiple batches, + * so that the process won't take too long if the table is large. */ +static void +rib_sweep_client_table (struct route_table *table, int rib_type) +{ + struct route_node *rn; + struct rib *rib; + struct rib *next; + int ret = 0; + + if (table) + for (rn = route_top (table); rn; rn = route_next (rn)) + for (rib = rn->info; rib; rib = next) + { + next = rib->next; + + if (CHECK_FLAG (rib->status, RIB_ENTRY_REMOVED)) + continue; + + if (rib->type == rib_type) + if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED)) + { + /* TODO(wsun) Is this mandatory? What about graceful restart/ + * non-stop forwarding */ + ret = rib_uninstall_kernel (rn, rib); + if (! ret) + rib_delnode (rn, rib); + else + zlog_err ("%s: could not delete routes from kernel!", + __func__); + } + else + { + /* Always delete the node. */ + rib_delnode (rn, rib); + } + } +} + +/* Sweep all routes learned from a given client from RIB tables. */ +void +rib_sweep_client_route (struct zserv *client) +{ + assert(client); + int route_type = client->route_type; + if (route_type != ZEBRA_ROUTE_MAX) + { + zlog_debug ("%s: Removing existing routes from client type %d", + __func__, route_type); + rib_sweep_client_table (vrf_table (AFI_IP, SAFI_UNICAST, 0), route_type); + rib_sweep_client_table (vrf_table (AFI_IP6, SAFI_UNICAST, 0), route_type); + } +} + /* Remove specific by protocol routes from 'table'. */ static unsigned long |