From 58a0adbc293bf9bcf911d5055f95ebb5278ea654 Mon Sep 17 00:00:00 2001
From: glebius <glebius@FreeBSD.org>
Date: Tue, 3 Apr 2012 18:10:48 +0000
Subject: [PATCH] Make it possible to switch pfsync(4) deferral mechanism
 on/off.

Obtained from:	OpenBSD
---
 sbin/ifconfig/ifpfsync.c | 28 +++++++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/sbin/ifconfig/ifpfsync.c b/sbin/ifconfig/ifpfsync.c
index 2a388a17e1c8..0af89e233c13 100644
--- a/sbin/ifconfig/ifpfsync.c
+++ b/sbin/ifconfig/ifpfsync.c
@@ -52,6 +52,7 @@ void setpfsync_syncpeer(const char *, int, int, const struct afswtch *);
 void unsetpfsync_syncpeer(const char *, int, int, const struct afswtch *);
 void setpfsync_syncpeer(const char *, int, int, const struct afswtch *);
 void setpfsync_maxupd(const char *, int, int, const struct afswtch *);
+void setpfsync_defer(const char *, int, int, const struct afswtch *);
 void pfsync_status(int);
 
 void
@@ -162,6 +163,23 @@ setpfsync_maxupd(const char *val, int d, int s, const struct afswtch *rafp)
 		err(1, "SIOCSETPFSYNC");
 }
 
+/* ARGSUSED */
+void
+setpfsync_defer(const char *val, int d, int s, const struct afswtch *rafp)
+{
+	struct pfsyncreq preq;
+
+	memset((char *)&preq, 0, sizeof(struct pfsyncreq));
+	ifr.ifr_data = (caddr_t)&preq;
+
+	if (ioctl(s, SIOCGETPFSYNC, (caddr_t)&ifr) == -1)
+		err(1, "SIOCGETPFSYNC");
+
+	preq.pfsyncr_defer = d;
+	if (ioctl(s, SIOCSETPFSYNC, (caddr_t)&ifr) == -1)
+		err(1, "SIOCSETPFSYNC");
+}
+
 void
 pfsync_status(int s)
 {
@@ -183,8 +201,10 @@ pfsync_status(int s)
 		printf("syncpeer: %s ", inet_ntoa(preq.pfsyncr_syncpeer));
 
 	if (preq.pfsyncr_syncdev[0] != '\0' ||
-	    preq.pfsyncr_syncpeer.s_addr != INADDR_PFSYNC_GROUP)
-		printf("maxupd: %d\n", preq.pfsyncr_maxupdates);
+	    preq.pfsyncr_syncpeer.s_addr != INADDR_PFSYNC_GROUP) {
+		printf("maxupd: %d ", preq.pfsyncr_maxupdates);
+		printf("defer: %s\n", preq.pfsyncr_defer ? "on" : "off");
+	}
 }
 
 static struct cmd pfsync_cmds[] = {
@@ -194,7 +214,9 @@ static struct cmd pfsync_cmds[] = {
 	DEF_CMD("-syncif",	1,	unsetpfsync_syncdev),
 	DEF_CMD_ARG("syncpeer",		setpfsync_syncpeer),
 	DEF_CMD("-syncpeer",	1,	unsetpfsync_syncpeer),
-	DEF_CMD_ARG("maxupd",		setpfsync_maxupd)
+	DEF_CMD_ARG("maxupd",		setpfsync_maxupd),
+	DEF_CMD("defer",	1,	setpfsync_defer),
+	DEF_CMD("-defer",	0,	setpfsync_defer),
 };
 static struct afswtch af_pfsync = {
 	.af_name	= "af_pfsync",