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From: Christoph Heiss <c.heiss@proxmox.com>
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Subject: [pve-devel] [PATCH pve-firewall 03/14] firewall: add connmark rule
with VMID to all guest chains
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Adds a connmark attribute with the VMID inside to anything flowing
in/out the guest, which are also carried over to all conntrack entries.
This enables differentiating conntrack entries between VMs for
live-migration.
Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
src/PVE/Firewall.pm | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/PVE/Firewall.pm b/src/PVE/Firewall.pm
index 533f2a2..5f7f72d 100644
--- a/src/PVE/Firewall.pm
+++ b/src/PVE/Firewall.pm
@@ -2468,11 +2468,14 @@ sub ruleset_chain_add_input_filters {
}
sub ruleset_create_vm_chain {
- my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction) = @_;
+ my ($ruleset, $chain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction, $vmid) = @_;
ruleset_create_chain($ruleset, $chain);
my $accept = generate_nfqueue($options);
+ # needs to be first, to ensure that it gets always applied
+ ruleset_addrule($ruleset, $chain, "", "-j CONNMARK --set-mark $vmid");
+
if (!(defined($options->{dhcp}) && $options->{dhcp} == 0)) {
if ($ipversion == 4) {
if ($direction eq 'OUT') {
@@ -2619,7 +2622,7 @@ sub generate_tap_rules_direction {
if ($options->{enable}) {
# create chain with mac and ip filter
- ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction);
+ ruleset_create_vm_chain($ruleset, $tapchain, $ipversion, $options, $macaddr, $ipfilter_ipset, $direction, $vmid);
ruleset_generate_vm_rules($ruleset, $rules, $cluster_conf, $vmfw_conf, $tapchain, $netid, $direction, $options, $ipversion, $vmid);
--
2.48.1
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