File 0002-IPaddr2-Allow-to-send-IPv6-Neighbor-Advertisements-i.patch of Package resource-agents.23998

From f4a9e3281d48c5d37f5df593d014706c46ddb3a7 Mon Sep 17 00:00:00 2001
From: Petr Pavlu <petr.pavlu@suse.com>
Date: Mon, 7 Mar 2022 17:21:59 +0100
Subject: [PATCH 2/4] IPaddr2: Allow to send IPv6 Neighbor Advertisements in
 background

"Starting" an IPv6 address with IPaddr2 involves sending Neighbor
Advertisement packets to inform neighboring machines about the new
IP+MAC translation. By default, 5x packets with 200 ms sleep after each
are sent which delays the start by 1000 ms. Allow the user to run this
operation in background, similarly as is possible with GARP for IPv4.
---
 heartbeat/IPaddr2 | 33 +++++++++++++++++++++++++++++----
 1 file changed, 29 insertions(+), 4 deletions(-)

diff --git a/heartbeat/IPaddr2 b/heartbeat/IPaddr2
index 650392b7..e243a642 100755
--- a/heartbeat/IPaddr2
+++ b/heartbeat/IPaddr2
@@ -83,7 +83,7 @@ OCF_RESKEY_unique_clone_address_default=false
 OCF_RESKEY_arp_interval_default=200
 OCF_RESKEY_arp_count_default=5
 OCF_RESKEY_arp_count_refresh_default=0
-OCF_RESKEY_arp_bg_default=true
+OCF_RESKEY_arp_bg_default=""
 OCF_RESKEY_arp_sender_default=""
 OCF_RESKEY_send_arp_opts_default=""
 OCF_RESKEY_flush_routes_default="false"
@@ -336,9 +336,10 @@ situations.
 
 <parameter name="arp_bg">
 <longdesc lang="en">
-Whether or not to send the ARP packets in the background.
+Whether or not to send the ARP (IPv4) or NA (IPv6) packets in the background.
+The default is true for IPv4 and false for IPv6.
 </longdesc>
-<shortdesc lang="en">ARP from background</shortdesc>
+<shortdesc lang="en">ARP/NA from background</shortdesc>
 <content type="string" default="${OCF_RESKEY_arp_bg_default}"/>
 </parameter>
 
@@ -507,6 +508,9 @@ ip_init() {
 			ocf_exit_reason "IPv4 does not support lvs_ipv6_addrlabel"
 			exit $OCF_ERR_CONFIGURED
 		fi
+		if [ -z "$OCF_RESKEY_arp_bg" ]; then
+			OCF_RESKEY_arp_bg=true
+		fi
 	else
 		FAMILY=inet6
 		# address sanitization defined in RFC5952
@@ -527,6 +531,9 @@ ip_init() {
 			    exit $OCF_ERR_CONFIGURED
 			fi
 		fi
+		if [ -z "$OCF_RESKEY_arp_bg" ]; then
+			OCF_RESKEY_arp_bg=false
+		fi
 	fi
 
 	# support nic:iflabel format in nic parameter
@@ -893,6 +900,20 @@ run_arp_sender() {
 	fi
 }
 
+log_send_ua() {
+	local cmdline
+	local output
+	local rc
+
+	cmdline="$@"
+	output=$($cmdline 2>&1)
+	rc=$?
+	if [ $rc -ne 0 ] ; then
+		ocf_log err "Could not send ICMPv6 Unsolicited Neighbor Advertisements: rc=$rc"
+	fi
+	ocf_log info "$output"
+	return $rc
+}
 
 #
 # Run send_ua to note send ICMPv6 Unsolicited Neighbor Advertisements.
@@ -930,7 +951,11 @@ run_send_ua() {
 
 	ARGS="-i $OCF_RESKEY_arp_interval -c $OCF_RESKEY_arp_count $OCF_RESKEY_ip $NETMASK $NIC"
 	ocf_log info "$SENDUA $ARGS"
-	$SENDUA $ARGS || ocf_log err "Could not send ICMPv6 Unsolicited Neighbor Advertisements."
+	if ocf_is_true $OCF_RESKEY_arp_bg; then
+		log_send_ua $SENDUA $ARGS &
+	else
+		log_send_ua $SENDUA $ARGS
+	fi
 }
 
 # Do we already serve this IP address on the given $NIC?
-- 
2.26.2