X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Flearning-switch.c;h=97aaf9fe50c576270d9a32c905f77734c6cfd9fb;hb=6d6ab93e9dcd91119ea9a1a843c1bb35e6754706;hp=ca970540e0ff8e38f97e4e434b2a11cfaf4e2774;hpb=9b45d7f5db91cdb41eb0a2124d92885d3b3edcc9;p=openvswitch

diff --git a/lib/learning-switch.c b/lib/learning-switch.c
index ca970540..97aaf9fe 100644
--- a/lib/learning-switch.c
+++ b/lib/learning-switch.c
@@ -324,12 +324,15 @@ lswitch_choose_destination(struct lswitch *sw, const struct flow *flow)
     uint16_t out_port;
 
     /* Learn the source MAC. */
-    if (sw->ml) {
-        if (mac_learning_learn(sw->ml, flow->dl_src, 0, flow->in_port,
-                               GRAT_ARP_LOCK_NONE)) {
+    if (mac_learning_may_learn(sw->ml, flow->dl_src, 0)) {
+        struct mac_entry *mac = mac_learning_insert(sw->ml, flow->dl_src, 0);
+        if (mac_entry_is_new(mac) || mac->port.i != flow->in_port) {
             VLOG_DBG_RL(&rl, "%016llx: learned that "ETH_ADDR_FMT" is on "
                         "port %"PRIu16, sw->datapath_id,
                         ETH_ADDR_ARGS(flow->dl_src), flow->in_port);
+
+            mac->port.i = flow->in_port;
+            mac_learning_changed(sw->ml, mac);
         }
     }
 
@@ -340,9 +343,11 @@ lswitch_choose_destination(struct lswitch *sw, const struct flow *flow)
 
     out_port = OFPP_FLOOD;
     if (sw->ml) {
-        int learned_port = mac_learning_lookup(sw->ml, flow->dl_dst, 0, NULL);
-        if (learned_port >= 0) {
-            out_port = learned_port;
+        struct mac_entry *mac;
+
+        mac = mac_learning_lookup(sw->ml, flow->dl_dst, 0, NULL);
+        if (mac) {
+            out_port = mac->port.i;
             if (out_port == flow->in_port) {
                 /* Don't send a packet back out its input port. */
                 return OFPP_NONE;