X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/c29d86ce91159cc6ddcb4266903f0aafe9992e01..2827b727d2910a3b48f9de7d67b3a67f59e256c7:/lincan/src/can_queue.c

diff --git a/lincan/src/can_queue.c b/lincan/src/can_queue.c
index f061f4f..b0c027e 100644
--- a/lincan/src/can_queue.c
+++ b/lincan/src/can_queue.c
@@ -636,4 +636,45 @@ int canqueue_ends_kill_outlist(struct canque_ends_t *qends)
 }
 
 
+/**
+ * canqueue_ends_filt_conjuction - computes conjunction of incoming edges filters filters
+ * @qends: pointer to ends structure
+ * @filt: pointer the filter structure filled by computed filters conjunction
+ *
+ * Return Value: Number of incoming edges
+ */
+int canqueue_ends_filt_conjuction(struct canque_ends_t *qends, struct canfilt_t *filt)
+{
+	struct canque_edge_t *edge;
+	int cnt=0;
+	unsigned long filtid=0;
+	unsigned long filtmask=~0;
+	unsigned long local_only=canque_filtid2internal(0,MSG_LOCAL);
+
+	canque_for_each_inedge(qends, edge){
+		/* skip edges processing only local messages */
+		if(edge->filtid & edge->filtmask & local_only)
+			continue;
+
+		if(!cnt++)
+			filtid = edge->filtid;
+		else
+			filtmask &= ~(filtid ^ edge->filtid);
+	
+		filtmask &= edge->filtmask;
+	}
+	
+	filt->id = filtid & MSG_ID_MASK;
+	filt->mask = filtmask & MSG_ID_MASK;
+	filtid >>= 28;
+	filtmask >>= 28;
+	filt->flags = filtid & MSG_EXT;
+	if(filtmask & (MSG_EXT))
+		filt->flags |= MSG_EXT_MASK;
+	if(filtid & (MSG_RTR<<1))
+		filt->flags |= MSG_RTR<<1;
+	if(filtmask & (MSG_RTR<<1))
+		filt->flags |= MSG_RTR_MASK;
+	return cnt;
+}