From 76504ce978eb237d4fb5512ce9fc30209135665c Mon Sep 17 00:00:00 2001
From: Hiren Panchasara <hiren@FreeBSD.org>
Date: Mon, 4 Aug 2014 19:42:48 +0000
Subject: [PATCH] Add a comment for easier code understanding.

---
 sys/netinet/tcp_timewait.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sys/netinet/tcp_timewait.c b/sys/netinet/tcp_timewait.c
index 716358569d4..33555d9fe98 100644
--- a/sys/netinet/tcp_timewait.c
+++ b/sys/netinet/tcp_timewait.c
@@ -275,6 +275,11 @@ tcp_twstart(struct tcpcb *tp)
 
 	tw = uma_zalloc(V_tcptw_zone, M_NOWAIT);
 	if (tw == NULL) {
+		/*
+		 * Reached limit on total number of TIMEWAIT connections
+		 * allowed. Remove a connection from TIMEWAIT queue in LRU
+		 * fashion to make room for this connection.
+		 */
 		tw = tcp_tw_2msl_reuse();
 		if (tw == NULL) {
 			tp = tcp_close(tp);