T4072: add firewall bridge filtering. First implementation only applies for forward chain and few matchers. Should be extended in the future.

5 files changed, 60 insertions, 13 deletions

diff --git a/data/templates/firewall/nftables-bridge.j2 b/data/templates/firewall/nftables-bridge.j2
new file mode 100644
index 000000000..7f94e10d6
--- /dev/null
+++ b/data/templates/firewall/nftables-bridge.j2
@@ -0,0 +1,35 @@
+{% macro bridge(bridge) %}
+{% set ns = namespace(sets=[]) %}
+{% if bridge.forward is vyos_defined %}
+{%     for prior, conf in bridge.forward.items() %}
+{%         set def_action = conf.default_action %}
+    chain VYOS_FORWARD_{{ prior }} {
+        type filter hook forward priority {{ prior }}; policy {{ def_action }};
+{%         if conf.rule is vyos_defined %}
+{%             for rule_id, rule_conf in conf.rule.items() if rule_conf.disable is not vyos_defined %}
+    {{ rule_conf | nft_rule('FWD', prior, rule_id, 'bri') }}
+{%                 if rule_conf.recent is vyos_defined %}
+{%                     set ns.sets = ns.sets + ['FWD_' + prior + '_' + rule_id] %}
+{%                 endif %}
+{%             endfor %}
+{%         endif %}
+    }
+{%     endfor %}
+{% endif %}
+
+{% if bridge.name is vyos_defined %}
+{%     for name_text, conf in bridge.name.items() %}
+    chain NAME_{{ name_text }} {
+{%         if conf.rule is vyos_defined %}
+{%             for rule_id, rule_conf in conf.rule.items() if rule_conf.disable is not vyos_defined %}
+    {{ rule_conf | nft_rule('NAM', name_text, rule_id, 'bri') }}
+{%                 if rule_conf.recent is vyos_defined %}
+{%                     set ns.sets = ns.sets + ['NAM_' + name_text + '_' + rule_id] %}
+{%                 endif %}
+{%             endfor %}
+{%         endif %}
+    {{ conf | nft_default_rule(name_text) }}
+    }
+{%     endfor %}
+{% endif %}
+{% endmacro %}
diff --git a/data/templates/firewall/nftables-defines.j2 b/data/templates/firewall/nftables-defines.j2
index 0a7e79edd..a20c399ae 100644
--- a/data/templates/firewall/nftables-defines.j2
+++ b/data/templates/firewall/nftables-defines.j2
@@ -1,7 +1,7 @@
-{% macro groups(group, is_ipv6) %}
+{% macro groups(group, is_ipv6, is_l3) %}
 {% if group is vyos_defined %}
 {%     set ip_type = 'ipv6_addr' if is_ipv6 else 'ipv4_addr' %}
-{%     if group.address_group is vyos_defined and not is_ipv6 %}
+{%     if group.address_group is vyos_defined and not is_ipv6 and is_l3 %}
 {%         for group_name, group_conf in group.address_group.items() %}
 {%             set includes = group_conf.include if group_conf.include is vyos_defined else [] %}
     set A_{{ group_name }} {
@@ -14,7 +14,7 @@
     }
 {%         endfor %}
 {%     endif %}
-{%     if group.ipv6_address_group is vyos_defined and is_ipv6 %}
+{%     if group.ipv6_address_group is vyos_defined and is_ipv6 and is_l3 %}
 {%         for group_name, group_conf in group.ipv6_address_group.items() %}
 {%             set includes = group_conf.include if group_conf.include is vyos_defined else [] %}
     set A6_{{ group_name }} {
@@ -27,7 +27,7 @@
     }
 {%         endfor %}
 {%     endif %}
-{%     if group.domain_group is vyos_defined %}
+{%     if group.domain_group is vyos_defined and is_l3 %}
 {%         for name, name_config in group.domain_group.items() %}
     set D_{{ name }} {
         type {{ ip_type }}
@@ -46,7 +46,7 @@
     }
 {%         endfor %}
 {%     endif %}
-{%     if group.network_group is vyos_defined and not is_ipv6 %}
+{%     if group.network_group is vyos_defined and not is_ipv6 and is_l3 %}
 {%         for group_name, group_conf in group.network_group.items() %}
 {%             set includes = group_conf.include if group_conf.include is vyos_defined else [] %}
     set N_{{ group_name }} {
@@ -59,7 +59,7 @@
     }
 {%         endfor %}
 {%     endif %}
-{%     if group.ipv6_network_group is vyos_defined and is_ipv6 %}
+{%     if group.ipv6_network_group is vyos_defined and is_ipv6 and is_l3 %}
 {%         for group_name, group_conf in group.ipv6_network_group.items() %}
 {%             set includes = group_conf.include if group_conf.include is vyos_defined else [] %}
     set N6_{{ group_name }} {
@@ -72,7 +72,7 @@
     }
 {%         endfor %}
 {%     endif %}
-{%     if group.port_group is vyos_defined %}
+{%     if group.port_group is vyos_defined and is_l3 %}
 {%         for group_name, group_conf in group.port_group.items() %}
 {%             set includes = group_conf.include if group_conf.include is vyos_defined else [] %}
     set P_{{ group_name }} {
diff --git a/data/templates/firewall/nftables-nat.j2 b/data/templates/firewall/nftables-nat.j2
index f0be3cf5d..dcf28da88 100644
--- a/data/templates/firewall/nftables-nat.j2
+++ b/data/templates/firewall/nftables-nat.j2
@@ -62,6 +62,6 @@ table ip vyos_nat {
         return
     }
 
-{{ group_tmpl.groups(firewall_group, False) }}
+{{ group_tmpl.groups(firewall_group, False, True) }}
 }
 {% endif %}
diff --git a/data/templates/firewall/nftables-policy.j2 b/data/templates/firewall/nftables-policy.j2
index 699349e2b..d77e3f6e9 100644
--- a/data/templates/firewall/nftables-policy.j2
+++ b/data/templates/firewall/nftables-policy.j2
@@ -32,7 +32,7 @@ table ip vyos_mangle {
 {%     endfor %}
 {% endif %}
 
-{{ group_tmpl.groups(firewall_group, False) }}
+{{ group_tmpl.groups(firewall_group, False, True) }}
 }
 
 table ip6 vyos_mangle {
@@ -61,5 +61,5 @@ table ip6 vyos_mangle {
 {%     endfor %}
 {% endif %}
 
-{{ group_tmpl.groups(firewall_group, True) }}
+{{ group_tmpl.groups(firewall_group, True, True) }}
 }
diff --git a/data/templates/firewall/nftables.j2 b/data/templates/firewall/nftables.j2
index 0fbddfaa9..bb14609b0 100644
--- a/data/templates/firewall/nftables.j2
+++ b/data/templates/firewall/nftables.j2
@@ -1,6 +1,7 @@
 #!/usr/sbin/nft -f
 
 {% import 'firewall/nftables-defines.j2' as group_tmpl %}
+{% import 'firewall/nftables-bridge.j2' as bridge_tmpl %}
 
 flush chain raw FW_CONNTRACK
 flush chain ip6 raw FW_CONNTRACK
@@ -147,7 +148,7 @@ table ip vyos_filter {
 {%         endfor %}
 {%     endif %}
 {% endif %}
-{{ group_tmpl.groups(group, False) }}
+{{ group_tmpl.groups(group, False, True) }}
 }
 
 {% if first_install is not vyos_defined %}
@@ -250,5 +251,16 @@ table ip6 vyos_filter {
 {%         endfor %}
 {%     endif %}
 {% endif %}
-{{ group_tmpl.groups(group, True) }}
-}
\ No newline at end of file
+{{ group_tmpl.groups(group, True, True) }}
+}
+
+## Bridge Firewall
+{% if first_install is not vyos_defined %}
+delete table bridge vyos_filter
+{% endif %}
+{% if bridge is vyos_defined %}
+table bridge vyos_filter {
+{{ bridge_tmpl.bridge(bridge) }}
+{{ group_tmpl.groups(group, False, False) }}
+}
+{% endif %}