File kdump-net-0007-query-correct-iface.patch of Package kdump

From: Petr Tesarik <ptesarik@suse.com>
Date: Thu, 1 Sep 2016 10:40:54 +0200
Subject: Query the correct interface in kdump_ip_config
References: bsc#980328
Patch-mainline: v0.8.16
Git-commit: 023b8be6d04e645ee429acb61c4312b63b2e0c50

Since the initrd interface name may differ from the running kernel's,
the latter should be passed in the ip= dracut option. However, the
current interface name is also required in kdump_ip_config and
kdump_ip6_config to query the currently assigned IP address.

Signed-off-by: Petr Tesarik <ptesarik@suse.com>
---
 init/module-setup.sh       |   11 +++++------
 init/setup-kdump.functions |   12 ++++++++----
 2 files changed, 13 insertions(+), 10 deletions(-)

--- a/init/module-setup.sh
+++ b/init/module-setup.sh
@@ -80,7 +80,6 @@ kdump_cmdline_ip() {
 
     local iface
     kdump_ifname_config "$_if"
-    _if="$iface"
 
     if [ "$_mode" = "auto" ] ; then
 	if [ -n $(kdump_ip_config "$_if") ] ; then
@@ -95,17 +94,17 @@ kdump_cmdline_ip() {
     case "$_mode" in
 	static)
 	    printf " %s" \
-		$(kdump_ip_config "$_if") \
-		$(kdump_ip6_config "$_if")
+		$(kdump_ip_config "$_if" "$iface") \
+		$(kdump_ip6_config "$_if" "$iface")
 	    ;;
 	dhcp|dhcp4)
-	    echo " ip=${_if}:dhcp"
+	    echo " ip=${iface}:dhcp"
 	    ;;
 	dhcp6)
-	    echo " ip=${_if}:dhcp6"
+	    echo " ip=${iface}:dhcp6"
 	    ;;
 	auto6)
-	    echo " ip=${_if}:auto6"
+	    echo " ip=${iface}:auto6"
 	    ;;
 	*)
 	    derror "Wrong KDUMP_NETCONFIG mode: $_mode"
--- a/init/setup-kdump.functions
+++ b/init/setup-kdump.functions
@@ -359,12 +359,14 @@ kdump_prefix2netmask() {						   # {{{
 # Get the IPv4 ip= parameter for a given device
 #
 # Parameters:
-#   1) device  device name
+#   1) iface   current interface name
+#   2) bootif  interface name in initrd
 # Output:
 #   ip configuration string that can be used for the ip= initrd parameter
 function kdump_ip_config()						   # {{{
 {
     local iface="$1"
+    local bootif="$2"
     local ipaddr peeraddr gwaddr netmask hostname
     local family cidr rest
     local prefix
@@ -389,19 +391,21 @@ function kdump_ip_config()						   # {{{
     gwaddr=$(ip route show 0/0 | sed -n 's/.* via \([^ ]*\).*/\1/p')
     hostname=$(hostname)
 
-    echo "ip=$ipaddr:$peeraddr:$gwaddr:$netmask:$hostname:$iface:none"
+    echo "ip=$ipaddr:$peeraddr:$gwaddr:$netmask:$hostname:$bootif:none"
 }									   # }}}
 
 #
 # Get the IPv6 ip= parameter for a given device
 #
 # Parameters:
-#   1) device  device name
+#   1) iface   current interface name
+#   2) bootif  interface name in initrd
 # Output:
 #   ip configuration string that can be used for the ip= initrd parameter
 function kdump_ip6_config()						   # {{{
 {
     local iface="$1"
+    local bootif="$2"
     local ipaddr peeraddr gwaddr hostname
     local family cidr rest prefix
 
@@ -425,7 +429,7 @@ function kdump_ip6_config()						   # {{
 	    peeraddr=
         fi
 
-	echo "ip=$ipaddr:$peeraddr:$gwaddr::$hostname:$iface:none"
+	echo "ip=$ipaddr:$peeraddr:$gwaddr::$hostname:$bootif:none"
     done < <(ip -6 address show dev "$iface" permanent scope global)
 }									   # }}}