diff options
Diffstat (limited to 'zebra')
| -rw-r--r-- | zebra/zebra_rib.c | 134 |
1 files changed, 70 insertions, 64 deletions
diff --git a/zebra/zebra_rib.c b/zebra/zebra_rib.c index cc63dba0..99b5296b 100644 --- a/zebra/zebra_rib.c +++ b/zebra/zebra_rib.c @@ -1189,21 +1189,30 @@ end: zlog_debug ("%s: %s/%d: rn %p dequeued", __func__, buf, rn->p.prefixlen, rn); } -/* Take a list of route_node structs and return 1, if there was a record picked from - * it and processed by rib_process(). Don't process more, than one RN record; operate - * only in the specified sub-queue. +/* Take a list of route_node structs and return 1, if there was a record + * picked from it and processed by rib_process(). Don't process more, + * than one RN record; operate only in the specified sub-queue. */ static unsigned int process_subq (struct list * subq, u_char qindex) { - struct listnode *lnode; + struct listnode *lnode = listhead (subq); struct route_node *rnode; - if (!(lnode = listhead (subq))) + + if (!lnode) return 0; + rnode = listgetdata (lnode); rib_process (rnode); + if (rnode->info) /* The first RIB record is holding the flags bitmask. */ UNSET_FLAG (((struct rib *)rnode->info)->rn_status, RIB_ROUTE_QUEUED(qindex)); + else + { + zlog_debug ("%s: called for route_node (%p, %d) with no ribs", + __func__, rnode, rnode->lock); + zlog_backtrace(LOG_DEBUG); + } route_unlock_node (rnode); list_delete_node (subq, lnode); return 1; @@ -1217,66 +1226,66 @@ static wq_item_status meta_queue_process (struct work_queue *dummy, void *data) { struct meta_queue * mq = data; - u_char i; + unsigned i; + for (i = 0; i < MQ_SIZE; i++) if (process_subq (mq->subq[i], i)) - { - mq->size--; - break; - } + { + mq->size--; + break; + } return mq->size ? WQ_REQUEUE : WQ_SUCCESS; } -/* Look into the RN and queue it into one or more priority queues, increasing the size - * for each data push done. +/* Map from rib types to queue type (priority) in meta queue */ +static const u_char meta_queue_map[ZEBRA_ROUTE_MAX] = { + [ZEBRA_ROUTE_SYSTEM] = 4, + [ZEBRA_ROUTE_KERNEL] = 0, + [ZEBRA_ROUTE_CONNECT] = 0, + [ZEBRA_ROUTE_STATIC] = 1, + [ZEBRA_ROUTE_RIP] = 2, + [ZEBRA_ROUTE_RIPNG] = 2, + [ZEBRA_ROUTE_OSPF] = 2, + [ZEBRA_ROUTE_OSPF6] = 2, + [ZEBRA_ROUTE_ISIS] = 2, + [ZEBRA_ROUTE_BGP] = 3, + [ZEBRA_ROUTE_HSLS] = 4, +}; + +/* Look into the RN and queue it into one or more priority queues, + * increasing the size for each data push done. */ static void rib_meta_queue_add (struct meta_queue *mq, struct route_node *rn) { - u_char qindex; struct rib *rib; char buf[INET6_ADDRSTRLEN]; + if (IS_ZEBRA_DEBUG_RIB_Q) inet_ntop (rn->p.family, &rn->p.u.prefix, buf, INET6_ADDRSTRLEN); + for (rib = rn->info; rib; rib = rib->next) - { - switch (rib->type) - { - case ZEBRA_ROUTE_KERNEL: - case ZEBRA_ROUTE_CONNECT: - qindex = 0; - break; - case ZEBRA_ROUTE_STATIC: - qindex = 1; - break; - case ZEBRA_ROUTE_RIP: - case ZEBRA_ROUTE_RIPNG: - case ZEBRA_ROUTE_OSPF: - case ZEBRA_ROUTE_OSPF6: - case ZEBRA_ROUTE_ISIS: - qindex = 2; - break; - case ZEBRA_ROUTE_BGP: - qindex = 3; - break; - default: - qindex = 4; - break; - } - /* Invariant: at this point we always have rn->info set. */ - if (CHECK_FLAG (((struct rib *)rn->info)->rn_status, RIB_ROUTE_QUEUED(qindex))) { + u_char qindex = meta_queue_map[rib->type]; + + /* Invariant: at this point we always have rn->info set. */ + if (CHECK_FLAG (((struct rib *)rn->info)->rn_status, RIB_ROUTE_QUEUED(qindex))) + { + if (IS_ZEBRA_DEBUG_RIB_Q) + zlog_debug ("%s: %s/%d: rn %p is already queued in sub-queue %u", + __func__, buf, rn->p.prefixlen, rn, qindex); + continue; + } + + SET_FLAG (((struct rib *)rn->info)->rn_status, RIB_ROUTE_QUEUED(qindex)); + listnode_add (mq->subq[qindex], rn); + route_lock_node (rn); + mq->size++; + if (IS_ZEBRA_DEBUG_RIB_Q) - zlog_debug ("%s: %s/%d: rn %p is already queued in sub-queue %u", __func__, buf, rn->p.prefixlen, rn, qindex); - continue; - } - SET_FLAG (((struct rib *)rn->info)->rn_status, RIB_ROUTE_QUEUED(qindex)); - listnode_add (mq->subq[qindex], rn); - route_lock_node (rn); - mq->size++; - if (IS_ZEBRA_DEBUG_RIB_Q) - zlog_debug ("%s: %s/%d: queued rn %p into sub-queue %u", __func__, buf, rn->p.prefixlen, rn, qindex); - } + zlog_debug ("%s: %s/%d: queued rn %p into sub-queue %u", + __func__, buf, rn->p.prefixlen, rn, qindex); + } } /* Add route_node to work queue and schedule processing */ @@ -1328,27 +1337,24 @@ rib_queue_add (struct zebra_t *zebra, struct route_node *rn) return; } -/* Create new meta queue. A destructor function doesn't seem to be necessary here. */ +/* Create new meta queue. + A destructor function doesn't seem to be necessary here. + */ static struct meta_queue * meta_queue_new (void) { struct meta_queue *new; - unsigned i, failed = 0; + unsigned i; + + new = XCALLOC (MTYPE_WORK_QUEUE, sizeof (struct meta_queue)); + assert(new); - if ((new = XCALLOC (MTYPE_WORK_QUEUE, sizeof (struct meta_queue))) == NULL) - return NULL; for (i = 0; i < MQ_SIZE; i++) - if ((new->subq[i] = list_new ()) == NULL) - failed = 1; - if (failed) - { - for (i = 0; i < MQ_SIZE; i++) - if (new->subq[i]) - list_delete (new->subq[i]); - XFREE (MTYPE_WORK_QUEUE, new); - return NULL; - } - new->size = 0; + { + new->subq[i] = list_new (); + assert(new->subq[i]); + } + return new; } |