From: Ben Pfaff <blp@nicira.com>
Date: Mon, 26 Jan 2009 17:56:11 +0000 (-0800)
Subject: Add comment.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4317a9e745861183ae62ccbfc2816b90482000d2;p=openvswitch

Add comment.

Thanks to Martin via DK for suggestion.
---

diff --git a/lib/rconn.c b/lib/rconn.c
index 96e41346..0ec84747 100644
--- a/lib/rconn.c
+++ b/lib/rconn.c
@@ -517,6 +517,11 @@ rconn_send(struct rconn *rc, struct ofpbuf *b, int *n_queued)
             ++*n_queued;
         }
         queue_push_tail(&rc->txq, b);
+
+        /* If the queue was empty before we added 'b', try to send some
+         * packets.  (But if the queue had packets in it, it's because the
+         * vconn is backlogged and there's no point in stuffing more into it
+         * now.  We'll get back to that in rconn_run().) */
         if (rc->txq.n == 1) {
             try_send(rc);
         }