[src/trunk]: src/sys/netinet - comments

[yamt <yamt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/016c5c6f5c39
branches:  trunk
changeset: 764255:016c5c6f5c39
user:      yamt <yamt%NetBSD.org@localhost>
date:      Thu Apr 14 15:54:31 2011 +0000

description:
- comments
- whitespace

diffstat:

 sys/netinet/tcp_sack.c |  25 +++++++++++++++++++++++--
 1 files changed, 23 insertions(+), 2 deletions(-)

diffs (77 lines):

diff -r 3867dbee1de5 -r 016c5c6f5c39 sys/netinet/tcp_sack.c
--- a/sys/netinet/tcp_sack.c    Thu Apr 14 15:53:36 2011 +0000
+++ b/sys/netinet/tcp_sack.c    Thu Apr 14 15:54:31 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tcp_sack.c,v 1.25 2009/05/27 17:41:03 pooka Exp $ */
+/* $NetBSD: tcp_sack.c,v 1.26 2011/04/14 15:54:31 yamt Exp $ */
 
 /*
  * Copyright (c) 2005 The NetBSD Foundation, Inc.
@@ -102,7 +102,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tcp_sack.c,v 1.25 2009/05/27 17:41:03 pooka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tcp_sack.c,v 1.26 2011/04/14 15:54:31 yamt Exp $");
 
 #include "opt_inet.h"
 #include "opt_ipsec.h"
@@ -226,9 +226,14 @@
        return next;
 }
 
+/*
+ * tcp_new_dsack: record the reception of a duplicated segment.
+ */
+
 void
 tcp_new_dsack(struct tcpcb *tp, tcp_seq seq, u_int32_t len)
 {
+
        if (TCP_SACK_ENABLED(tp)) {
                tp->rcv_dsack_block.left = seq;
                tp->rcv_dsack_block.right = seq + len;
@@ -236,6 +241,10 @@
        }
 }
 
+/*
+ * tcp_sack_option: parse the given SACK option and update the scoreboard.
+ */
+
 void
 tcp_sack_option(struct tcpcb *tp, const struct tcphdr *th, const u_char *cp,
     int optlen)
@@ -394,6 +403,10 @@
        }
 }
 
+/*
+ * tcp_del_sackholes: remove holes covered by a cumulative ACK.
+ */
+
 void
 tcp_del_sackholes(struct tcpcb *tp, const struct tcphdr *th)
 {
@@ -415,6 +428,10 @@
        }
 }
 
+/*
+ * tcp_free_sackholes: clear the scoreboard.
+ */
+
 void
 tcp_free_sackholes(struct tcpcb *tp)
 {
@@ -556,6 +573,10 @@
        return;
 }
 
+/*
+ * tcp_sack_numblks: return the number of SACK blocks to send.
+ */
+
 int
 tcp_sack_numblks(const struct tcpcb *tp)
 {