dpif: Add 'used' argument to dpif_flow_stats_extract().

The following commit will need to use a value other than a literal
time_msec() in one case.  This commit is just preparation.

Factoring the time_msec() call out of the loop in
handle_flow_miss_without_facet() is a really minor optimization.  It isn't
the main point here.

Signed-off-by: Ben Pfaff <blp@nicira.com>

diff --git a/lib/dpif.c b/lib/dpif.c
index 667e07c..2968966 100644 (file)
--- a/lib/dpif.c
+++ b/lib/dpif.c
@@ -685,15 +685,16 @@ dpif_port_poll_wait(const struct dpif *dpif)
 }
 
 /* Extracts the flow stats for a packet.  The 'flow' and 'packet'
- * arguments must have been initialized through a call to flow_extract(). */
+ * arguments must have been initialized through a call to flow_extract().
+ * 'used' is stored into stats->used. */
 void
 dpif_flow_stats_extract(const struct flow *flow, const struct ofpbuf *packet,
-                        struct dpif_flow_stats *stats)
+                        long long int used, struct dpif_flow_stats *stats)
 {
     stats->tcp_flags = packet_get_tcp_flags(packet, flow);
     stats->n_bytes = packet->size;
     stats->n_packets = 1;
-    stats->used = time_msec();
+    stats->used = used;
 }
 
 /* Appends a human-readable representation of 'stats' to 's'. */

diff --git a/lib/dpif.h b/lib/dpif.h
index 0202915..45c78a5 100644 (file)
--- a/lib/dpif.h
+++ b/lib/dpif.h
@@ -129,7 +129,7 @@ struct dpif_flow_stats {
 };
 
 void dpif_flow_stats_extract(const struct flow *, const struct ofpbuf *packet,
-                             struct dpif_flow_stats *);
+                             long long int used, struct dpif_flow_stats *);
 void dpif_flow_stats_format(const struct dpif_flow_stats *, struct ds *);
 
 enum dpif_flow_put_flags {

diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c
index 10d450e..2fcb025 100644 (file)
--- a/ofproto/ofproto-dpif.c
+++ b/ofproto/ofproto-dpif.c
@@ -2866,6 +2866,7 @@ handle_flow_miss_without_facet(struct flow_miss *miss,
                                struct flow_miss_op *ops, size_t *n_ops)
 {
     struct ofproto_dpif *ofproto = ofproto_dpif_cast(rule->up.ofproto);
+    long long int now = time_msec();
     struct action_xlate_ctx ctx;
     struct ofpbuf *packet;
 
@@ -2878,7 +2879,7 @@ handle_flow_miss_without_facet(struct flow_miss *miss,
 
         ofpbuf_use_stub(&odp_actions, op->stub, sizeof op->stub);
 
-        dpif_flow_stats_extract(&miss->flow, packet, &stats);
+        dpif_flow_stats_extract(&miss->flow, packet, now, &stats);
         rule_credit_stats(rule, &stats);
 
         action_xlate_ctx_init(&ctx, ofproto, &miss->flow, miss->initial_tci,
@@ -2929,7 +2930,7 @@ handle_flow_miss_with_facet(struct flow_miss *miss, struct facet *facet,
             subfacet_make_actions(subfacet, packet, &odp_actions);
         }
 
-        dpif_flow_stats_extract(&facet->flow, packet, &stats);
+        dpif_flow_stats_extract(&facet->flow, packet, time_msec(), &stats);
         subfacet_update_stats(subfacet, &stats);
 
         if (subfacet->actions_len) {
@@ -4708,7 +4709,7 @@ rule_execute(struct rule *rule_, const struct flow *flow,
     uint64_t odp_actions_stub[1024 / 8];
     struct ofpbuf odp_actions;
 
-    dpif_flow_stats_extract(flow, packet, &stats);
+    dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
     rule_credit_stats(rule, &stats);
 
     ofpbuf_use_stub(&odp_actions, odp_actions_stub, sizeof odp_actions_stub);
@@ -6434,7 +6435,7 @@ packet_out(struct ofproto *ofproto_, struct ofpbuf *packet,
         ofpbuf_use_stack(&key, &keybuf, sizeof keybuf);
         odp_flow_key_from_flow(&key, flow);
 
-        dpif_flow_stats_extract(flow, packet, &stats);
+        dpif_flow_stats_extract(flow, packet, time_msec(), &stats);
 
         action_xlate_ctx_init(&ctx, ofproto, flow, flow->vlan_tci, NULL,
                               packet_get_tcp_flags(packet, flow), packet);