From 137deb11701d70a64b555e7d6e252fca863fb92c Mon Sep 17 00:00:00 2001
From: k-nakahara <k-nakahara@iij.ad.jp>
Date: Fri, 8 Apr 2016 14:01:19 +0900
Subject: [PATCH 4/5] improve comment

---
 sys/sys/mbuf.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sys/sys/mbuf.h b/sys/sys/mbuf.h
index 747cdbd..113778c 100644
--- a/sys/sys/mbuf.h
+++ b/sys/sys/mbuf.h
@@ -170,6 +170,9 @@ struct m_hdr {
  * be bit-wise inverted (the final step in the calculation of an IP
  * checksum) -- this is so we can accumulate the checksum for fragmented
  * packets during reassembly.
+ *
+ * Size ILP32: 36
+ *       LP64: 56
  */
 struct	pkthdr {
 	struct ifnet	*rcvif;			/* rcv interface */
@@ -179,7 +182,7 @@ struct	pkthdr {
 	uint32_t	csum_data;		/* checksum data */
 	u_int		segsz;			/* segment size */
 
-	struct altq_pktattr pattr;
+	struct altq_pktattr pattr;		/* ALTQ packet attribute */
 };
 
 /*
-- 
2.1.0