[icmp6] forward NDP multicast to controller in correct fashion
This commit is contained in:
Nico Schottelius
parent
165f0e6b98
commit
0fa70432d1
11
doc/plan.org
11
doc/plan.org
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@ -432,9 +432,18 @@ DEBUG:main:INCOMING: <Ether dst=33:33:ff:00:00:42 src=00:00:0a:00:00:01 type=0x
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**** Requirements
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*** Performance comparison
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*** Feature/Functionality difference / overview
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*** Feature/Functionality difference / overview / Challenges in P4
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**** ICMP6: checksum over payload
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- variable length, up to 65k
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**** Synchronisation with the controller
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- Double data type definition -> might differ
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- TYPE_CPU for ethernet
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- Port ingress offset (9 vs. 16 bit)
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**** Not included
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- DNS64 - has already been solved in a different domain
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*** References / Follow up
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**** RFC 2460 IPv6 (Checksum https://tools.ietf.org/html/rfc2460#section-8.1)
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**** RFC 3810 MLD2 https://tools.ietf.org/html/rfc3810
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@ -35,10 +35,8 @@ class L2Controller(object):
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# Command line mapping
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self.modes = ['base', 'router']
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self.info={}
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self.info['ndp_multicast'] = ipaddress.ip_network("ff02::1:ff00:0/104")
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self.info['ndp_multicast'] = ipaddress.ip_network(u"ff02::1:ff00:0/104")
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self.address_suffix = 42
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@ -146,10 +144,15 @@ class L2Controller(object):
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def fill_tables(self):
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self.controller.table_clear("v6_routing")
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self.controller.table_clear("v6_networks")
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for v6route in self.v6_routes[self.mode]:
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net = self.prefix_to_net(v6route['net'], self.v6_mask)
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self.controller.table_add("v6_routing", "set_egress_port", [net], [v6route['port']])
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self.controller.table_add("v6_networks", "set_egress_port", [net], [v6route['port']])
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for v6net in self.info['ndp_multicast']:
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net = str(v6net)
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self.controller.table_add("v6_networks", "controller_reply", [net])
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self.controller.table_clear("v4_routing")
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for v4route in self.v4_routes[self.mode]:
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@ -15,6 +15,7 @@ typedef bit<16> mcast_t;
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const bit<16> TYPE_IPV4 = 0x0800;
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const bit<16> TYPE_IPV6 = 0x86DD;
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const bit<16> TYPE_CPU = 0x4242;
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const bit<16> TYPE_DEBUG = 0x2323;
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const bit<8> PROTO_ICMP = 1;
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@ -18,13 +18,16 @@ control MyIngress(inout headers hdr,
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/********************** ACTIONS ***********************************/
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/* As the name says */
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action drop() {
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mark_to_drop();
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}
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/* As the name says */
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action send_to_controller() {
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action set_egress_port (port_t out_port) {
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standard_metadata.egress_spec = out_port;
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}
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action controller_debug() {
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hdr.ethernet.ethertype = TYPE_DEBUG;
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clone3(CloneType.I2E, 100, meta);
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}
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@ -33,8 +36,7 @@ control MyIngress(inout headers hdr,
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clone3(CloneType.I2E, 100, meta);
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}
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/* Output PKG on correct ports (plural) */
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action multicast_pkg(mcast_t mcast_grp) {
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action multicast_pkg(mcast_t mcast_grp) { /* Output PKG on correct ports (plural) */
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standard_metadata.mcast_grp = mcast_grp;
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}
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@ -54,7 +56,7 @@ control MyIngress(inout headers hdr,
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hdr.icmp6.type: exact;
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}
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actions = {
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send_to_controller;
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controller_debug;
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icmp6_neighbor_solicitation;
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NoAction;
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}
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@ -70,12 +72,12 @@ control MyIngress(inout headers hdr,
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}
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actions = {
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multicast_pkg;
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send_to_controller;
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controller_debug;
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NoAction;
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}
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size = NDP_TABLE_SIZE;
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default_action = NoAction;
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// default_action = send_to_controller;
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// default_action = controller_debug;
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}
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/* Handle multicast registration of NDP */
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@ -85,12 +87,12 @@ control MyIngress(inout headers hdr,
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}
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actions = {
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multicast_pkg;
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send_to_controller;
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controller_debug;
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NoAction;
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}
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size = NDP_TABLE_SIZE;
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default_action = NoAction;
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// default_action = send_to_controller;
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// default_action = controller_debug;
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}
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/********************** NDP support ***********************************/
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@ -103,12 +105,12 @@ control MyIngress(inout headers hdr,
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}
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actions = {
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multicast_pkg;
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send_to_controller;
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controller_debug;
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NoAction;
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}
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size = NDP_TABLE_SIZE;
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// default_action = NoAction;
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default_action = send_to_controller;
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default_action = controller_debug;
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}
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@ -130,28 +132,24 @@ control MyIngress(inout headers hdr,
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*/
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}
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/********************** ROUTING (egress definiton) TABLES ***********************************/
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table v6_addresses {
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key = {
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hdr.ipv6.dst_addr: exact;
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// hdr.ipv6.next_header: exact;
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}
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actions = {
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// icmp6_answer;
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send_to_controller;
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controller_debug;
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controller_reply;
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NoAction;
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}
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size = ADDRESS_TABLE_SIZE;
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// default_action = send_to_controller;
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default_action = NoAction;
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}
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/********************** ROUTING (egress definiton) TABLES ***********************************/
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action set_egress_port (port_t out_port) {
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standard_metadata.egress_spec = out_port;
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}
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table v6_routing {
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table v6_networks {
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key = {
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hdr.ipv6.dst_addr: lpm;
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}
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@ -163,6 +161,7 @@ control MyIngress(inout headers hdr,
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default_action = NoAction;
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}
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table v4_routing {
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key = {
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hdr.ipv4.dst_addr: lpm;
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