src: add igmp support

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

2 files changed, 391 insertions, 0 deletions

diff --git a/tests/py/ip/igmp.t b/tests/py/ip/igmp.t
new file mode 100644
index 00000000..939dcc32
--- /dev/null
+++ b/tests/py/ip/igmp.t
@@ -0,0 +1,25 @@
+# *inet;test-inet
+:input;type filter hook input priority 0
+
+*ip;test-ip4;input
+
+igmp type membership-query;ok
+igmp type membership-report-v1;ok
+igmp type membership-report-v2;ok
+igmp type membership-report-v3;ok
+igmp type leave-group;ok
+
+igmp type { membership-report-v1, membership-report-v2, membership-report-v3};ok
+igmp type != { membership-report-v1, membership-report-v2, membership-report-v3};ok
+
+igmp checksum 12343;ok
+igmp checksum != 12343;ok
+igmp checksum 11-343;ok
+igmp checksum != 11-343;ok
+igmp checksum { 11-343};ok
+igmp checksum != { 11-343};ok
+igmp checksum { 1111, 222, 343};ok
+igmp checksum != { 1111, 222, 343};ok
+
+igmp mrt 10;ok
+igmp mrt != 10;ok
diff --git a/tests/py/ip/igmp.t.payload b/tests/py/ip/igmp.t.payload
new file mode 100644
index 00000000..1319c324
--- /dev/null
+++ b/tests/py/ip/igmp.t.payload
@@ -0,0 +1,366 @@
+# igmp type membership-query
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000011 ]
+
+# igmp type membership-report-v1
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000012 ]
+
+# igmp type membership-report-v2
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000016 ]
+
+# igmp type membership-report-v3
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000022 ]
+
+# igmp type leave-group
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000017 ]
+
+# igmp checksum 12343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ cmp eq reg 1 0x00003730 ]
+
+# igmp checksum != 12343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ cmp neq reg 1 0x00003730 ]
+
+# igmp checksum 11-343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ cmp gte reg 1 0x00000b00 ]
+  [ cmp lte reg 1 0x00005701 ]
+
+# igmp checksum != 11-343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ range neq reg 1 0x00000b00 0x00005701 ]
+
+# igmp checksum { 11-343}
+__set%d test-ip4 7 size 3
+__set%d test-ip4 0
+	element 00000000  : 1 [end]	element 00000b00  : 0 [end]	element 00005801  : 1 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d ]
+
+# igmp checksum != { 11-343}
+__set%d test-ip4 7 size 3
+__set%d test-ip4 0
+	element 00000000  : 1 [end]	element 00000b00  : 0 [end]	element 00005801  : 1 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d 0x1 ]
+
+# igmp checksum { 1111, 222, 343}
+__set%d test-ip4 3 size 3
+__set%d test-ip4 0
+	element 00005704  : 0 [end]	element 0000de00  : 0 [end]	element 00005701  : 0 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d ]
+
+# igmp checksum != { 1111, 222, 343}
+__set%d test-ip4 3 size 3
+__set%d test-ip4 0
+	element 00005704  : 0 [end]	element 0000de00  : 0 [end]	element 00005701  : 0 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d 0x1 ]
+
+# igmp type membership-query
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000011 ]
+
+# igmp type membership-report-v1
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000012 ]
+
+# igmp type membership-report-v2
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000016 ]
+
+# igmp type membership-report-v3
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000022 ]
+
+# igmp type leave-group
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000017 ]
+
+# igmp type { membership-report-v1, membership-report-v2, membership-report-v3}
+__set%d test-ip4 3 size 3
+__set%d test-ip4 0
+	element 00000012  : 0 [end]	element 00000016  : 0 [end]	element 00000022  : 0 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ lookup reg 1 set __set%d ]
+
+# igmp type != { membership-report-v1, membership-report-v2, membership-report-v3}
+__set%d test-ip4 3 size 3
+__set%d test-ip4 0
+	element 00000012  : 0 [end]	element 00000016  : 0 [end]	element 00000022  : 0 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ lookup reg 1 set __set%d 0x1 ]
+
+# igmp checksum 12343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ cmp eq reg 1 0x00003730 ]
+
+# igmp checksum != 12343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ cmp neq reg 1 0x00003730 ]
+
+# igmp checksum 11-343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ cmp gte reg 1 0x00000b00 ]
+  [ cmp lte reg 1 0x00005701 ]
+
+# igmp checksum != 11-343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ range neq reg 1 0x00000b00 0x00005701 ]
+
+# igmp checksum { 11-343}
+__set%d test-ip4 7 size 3
+__set%d test-ip4 0
+	element 00000000  : 1 [end]	element 00000b00  : 0 [end]	element 00005801  : 1 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d ]
+
+# igmp checksum != { 11-343}
+__set%d test-ip4 7 size 3
+__set%d test-ip4 0
+	element 00000000  : 1 [end]	element 00000b00  : 0 [end]	element 00005801  : 1 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d 0x1 ]
+
+# igmp checksum { 1111, 222, 343}
+__set%d test-ip4 3 size 3
+__set%d test-ip4 0
+	element 00005704  : 0 [end]	element 0000de00  : 0 [end]	element 00005701  : 0 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d ]
+
+# igmp checksum != { 1111, 222, 343}
+__set%d test-ip4 3 size 3
+__set%d test-ip4 0
+	element 00005704  : 0 [end]	element 0000de00  : 0 [end]	element 00005701  : 0 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d 0x1 ]
+
+# igmp type membership-query
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000011 ]
+
+# igmp type membership-report-v1
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000012 ]
+
+# igmp type membership-report-v2
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000016 ]
+
+# igmp type membership-report-v3
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000022 ]
+
+# igmp type leave-group
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ cmp eq reg 1 0x00000017 ]
+
+# igmp type { membership-report-v1, membership-report-v2, membership-report-v3}
+__set%d test-ip4 3 size 3
+__set%d test-ip4 0
+	element 00000012  : 0 [end]	element 00000016  : 0 [end]	element 00000022  : 0 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ lookup reg 1 set __set%d ]
+
+# igmp type != { membership-report-v1, membership-report-v2, membership-report-v3}
+__set%d test-ip4 3 size 3
+__set%d test-ip4 0
+	element 00000012  : 0 [end]	element 00000016  : 0 [end]	element 00000022  : 0 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 0 => reg 1 ]
+  [ lookup reg 1 set __set%d 0x1 ]
+
+# igmp checksum 12343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ cmp eq reg 1 0x00003730 ]
+
+# igmp checksum != 12343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ cmp neq reg 1 0x00003730 ]
+
+# igmp checksum 11-343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ cmp gte reg 1 0x00000b00 ]
+  [ cmp lte reg 1 0x00005701 ]
+
+# igmp checksum != 11-343
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ range neq reg 1 0x00000b00 0x00005701 ]
+
+# igmp checksum { 11-343}
+__set%d test-ip4 7 size 3
+__set%d test-ip4 0
+	element 00000000  : 1 [end]	element 00000b00  : 0 [end]	element 00005801  : 1 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d ]
+
+# igmp checksum != { 11-343}
+__set%d test-ip4 7 size 3
+__set%d test-ip4 0
+	element 00000000  : 1 [end]	element 00000b00  : 0 [end]	element 00005801  : 1 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d 0x1 ]
+
+# igmp checksum { 1111, 222, 343}
+__set%d test-ip4 3 size 3
+__set%d test-ip4 0
+	element 00005704  : 0 [end]	element 0000de00  : 0 [end]	element 00005701  : 0 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d ]
+
+# igmp checksum != { 1111, 222, 343}
+__set%d test-ip4 3 size 3
+__set%d test-ip4 0
+	element 00005704  : 0 [end]	element 0000de00  : 0 [end]	element 00005701  : 0 [end]
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 2b @ transport header + 2 => reg 1 ]
+  [ lookup reg 1 set __set%d 0x1 ]
+
+# igmp mrt 10
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 1 => reg 1 ]
+  [ cmp eq reg 1 0x0000000a ]
+
+# igmp mrt != 10
+ip test-ip4 input 
+  [ meta load l4proto => reg 1 ]
+  [ cmp eq reg 1 0x00000002 ]
+  [ payload load 1b @ transport header + 1 => reg 1 ]
+  [ cmp neq reg 1 0x0000000a ]
+