+static inline
+struct canque_edge_t *canque_first_outedge(struct canque_ends_t *qends)
+{
+ can_spin_irqflags_t flags;
+ struct list_head *entry;
+ struct canque_edge_t *edge;
+
+ can_spin_lock_irqsave(&qends->ends_lock, flags);
+ entry=qends->outlist.next;
+ skip_dead:
+ if(entry != &qends->outlist) {
+ edge=list_entry(entry,struct canque_edge_t,outpeers);
+ if(canque_fifo_test_fl(&edge->fifo,DEAD)) {
+ entry=entry->next;
+ goto skip_dead;
+ }
+ canque_edge_incref(edge);
+ } else {
+ edge=NULL;
+ }
+ can_spin_unlock_irqrestore(&qends->ends_lock, flags);
+ return edge;
+}
+
+
+static inline
+struct canque_edge_t *canque_next_outedge(struct canque_ends_t *qends, struct canque_edge_t *edge)
+{
+ can_spin_irqflags_t flags;
+ struct list_head *entry;
+ struct canque_edge_t *next;
+
+ can_spin_lock_irqsave(&qends->ends_lock, flags);
+ entry=edge->outpeers.next;
+ skip_dead:
+ if(entry != &qends->outlist) {
+ next=list_entry(entry,struct canque_edge_t,outpeers);
+ if(canque_fifo_test_fl(&edge->fifo,DEAD)) {
+ entry=entry->next;
+ goto skip_dead;
+ }
+ canque_edge_incref(next);
+ } else {
+ next=NULL;
+ }
+ can_spin_unlock_irqrestore(&qends->ends_lock, flags);
+ canque_edge_decref(edge);
+ return next;
+}
+
+#define canque_for_each_outedge(qends, edge) \
+ for(edge=canque_first_outedge(qends);edge;edge=canque_next_outedge(qends, edge))
+