X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fmac-learning.c;h=c9b7d3e73d65c65cab5c33fbf1334f2fcaf8a292;hb=2e44e26d10a911eec911f303eca44fdc97a5d80c;hp=eeebce86629b32b3e66b0481866cdc8bf29a0b61;hpb=a14bc59fb8f27db193d74662dc9c5cb8237177ef;p=openvswitch

diff --git a/lib/mac-learning.c b/lib/mac-learning.c
index eeebce86..c9b7d3e7 100644
--- a/lib/mac-learning.c
+++ b/lib/mac-learning.c
@@ -32,6 +32,14 @@
 #define THIS_MODULE VLM_mac_learning
 #include "vlog.h"
 
+/* Returns the number of seconds since 'e' was last learned. */
+int
+mac_entry_age(const struct mac_entry *e)
+{
+    time_t remaining = e->expires - time_now();
+    return MAC_ENTRY_IDLE_TIME - remaining;
+}
+
 static uint32_t
 mac_table_hash(const uint8_t mac[ETH_ADDR_LEN], uint16_t vlan)
 {
@@ -174,7 +182,7 @@ mac_learning_learn(struct mac_learning *ml,
     /* Make the entry most-recently-used. */
     list_remove(&e->lru_node);
     list_push_back(&ml->lrus, &e->lru_node);
-    e->expires = time_now() + 60;
+    e->expires = time_now() + MAC_ENTRY_IDLE_TIME;
 
     /* Did we learn something? */
     if (e->port != src_port) {