131 lines
4.1 KiB
Diff
131 lines
4.1 KiB
Diff
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From: Petr Tesarik <ptesarik@suse.com>
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Date: Thu, 24 May 2018 06:54:28 +0200
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Subject: Restore only static routes in kdump initrd
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References: bsc#1093795
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Upstream: merged
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Git-commit: c4484c33a5b228d4a1ebe7c99f14c3b7f38f34ef
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All existing routes are now added through the rd.route= dracut
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parameter. However, this includes routes that need not or should not
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be added explicitly (e.g. installed automatically by the kernel or
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dynamically by a routing daemon).
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If possible, use wicked to get configured routes. If not, use the
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routing protocol identifier to limit the list.
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Signed-off-by: Petr Tesarik <ptesarik@suse.com>
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---
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init/setup-kdump.functions | 86 ++++++++++++++++++++++++++++++++++++++++-----
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1 file changed, 77 insertions(+), 9 deletions(-)
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--- a/init/setup-kdump.functions
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+++ b/init/setup-kdump.functions
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@@ -518,6 +518,42 @@ kdump_prefix2netmask() { # {{{
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} # }}}
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#
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+# Get the IPv4 rd.route= parameters for a given device
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+#
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+# Parameters:
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+# 1) iface current interface name
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+# 2) bootif interface name in initrd
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+# Output:
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+# string that can be used for the rd.route= initrd parameter
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+function kdump_ip_routes() # {{{
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+{
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+ local _iface="$1"
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+ local _bootif="$2"
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+
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+ # remove default routes
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+ local _rmdefault='/^default /d'
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+ # transform the output of "ip route" into rd.route=
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+ local _xform='s/\([^ ]*\)\( via \([^ ]*\)\)\?.*/rd.route=\1:\3/'
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+ # add interface name and print
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+ local _addintf="s/\$/:${_bootif}/p"
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+
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+ # get configured routes using wicked if possible
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+ if [ -n "$(type -P wicked)" ]
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+ then
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+ wicked show-config | \
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+ wicked xpath --reference \
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+ "/interface[name='$_iface']/ipv4:static/route" \
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+ "rd.route=%{destination}:%{?nexthop/gateway}:$_bootif" \
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+ 2>/dev/null
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+ else
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+ ip route show dev "$_iface" proto boot | \
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+ sed -ne "$_rmdefault;$_xform;$_addintf"
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+ ip route show dev "$_iface" proto static | \
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+ sed -ne "$_rmdefault;$_xform;$_addintf"
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+ fi
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+} # }}}
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+
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+#
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# Get the IPv4 ip= parameter for a given device
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#
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# Parameters:
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@@ -556,12 +592,47 @@ function kdump_ip_config() # {{{
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if [ -n "$ipaddr" ] ; then
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echo "ip=$ipaddr:$peeraddr:$gwaddr:$netmask:$hostname:$bootif:none"
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+ kdump_ip_routes "$iface" "$bootif"
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+ fi
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+} # }}}
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+
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+#
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+# Get the IPv6 rd.route= parameters for a given device
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+#
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+# Parameters:
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+# 1) iface current interface name
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+# 2) bootif interface name in initrd
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+# Output:
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+# string that can be used for the rd.route= initrd parameter
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+function kdump_ip6_routes() # {{{
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+{
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+ local _iface="$1"
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+ local _bootif="$2"
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- routes=$(ip route show dev "$iface" | sed -n 's/\([0-9].*\) via \([^ ]*\).*/\1:\2/p')
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- for r in $routes ; do
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- echo "rd.route=$r:$bootif"
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- done
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- fi
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+ # remove default routes
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+ local _rmdefault='/^default /d'
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+ # transform the output of "ip route" into rd.route=
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+ local _xform='s/\([^ ]*\)\( via \([^ ]*\)\)\?.*/rd.route=[\1]:[\3]/'
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+ # remove gateway if empty
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+ local _rmgw='s/\[\]$//'
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+ # add interface name and print
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+ local _addintf="s/\$/:${_bootif}/p"
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+
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+ # get configured routes using wicked if possible
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+ if [ -n "$(type -P wicked)" ]
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+ then
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+ wicked show-config | \
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+ wicked xpath \
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+ --reference "/interface[name='$_iface']/ipv6:static/route" \
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+ "rd.route=[%{destination}]:[%{?nexthop/gateway}]" \
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+ 2>/dev/null | \
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+ sed -ne "$_rmgw;$_addintf"
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+ else
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+ ip -6 route show dev "$_iface" proto boot | \
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+ sed -ne "$_rmdefault;$_xform;$_rmgw;$_addintf"
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+ ip -6 route show dev "$_iface" proto static | \
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+ sed -ne "$_rmdefault;$_xform;$_rmgw;$_addintf"
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+ fi
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} # }}}
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#
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@@ -604,10 +675,7 @@ function kdump_ip6_config() # {{
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echo "ip=$ipaddr:$peeraddr:$gwaddr:$netmask:$hostname:$bootif:none"
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done < <(ip -6 address show dev "$iface" permanent scope global)
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- routes=$(ip -6 route show dev "$iface" | sed -n 's/\([0-9a-fA-F:].*\) via \([^ ]*\).*/[\1]:[\2]/p')
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- for r in $routes ; do
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- echo "rd.route=$r:$bootif"
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- done
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+ kdump_ip6_routes "$iface" "$bootif"
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} # }}}
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#
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