diff --git a/Documentation/faq/configuration.rst b/Documentation/faq/configuration.rst index cb2c6b4eca9..ff3b71a5d4e 100644 --- a/Documentation/faq/configuration.rst +++ b/Documentation/faq/configuration.rst @@ -212,6 +212,19 @@ Q: Does Open vSwitch support ERSPAN? options:erspan_ver=2 options:erspan_dir=1 \ options:erspan_hwid=4 +Q: Does Open vSwitch support IPv6 GRE? + + A: Yes. L2 tunnel interface GRE over IPv6 is supported. + L3 GRE tunnel over IPv6 is not supported. + + :: + + $ ovs-vsctl add-br br0 + $ ovs-vsctl add-port br0 at_gre0 -- \ + set int at_gre0 type=ip6gre \ + options:remote_ip=fc00:100::1 \ + options:packet_type=legacy_l2 + Q: How do I connect two bridges? A: First, why do you want to do this? Two connected bridges are not much diff --git a/NEWS b/NEWS index 097b1528ef2..6db1af8b1ed 100644 --- a/NEWS +++ b/NEWS @@ -58,6 +58,7 @@ Post-v2.11.0 * Support for the kernel version 5.0.x. - 'ovs-dpctl dump-flows' is no longer suitable for dumping offloaded flows. 'ovs-appctl dpctl/dump-flows' should be used instead. + - Add L2 GRE tunnel over IPv6 support. v2.11.0 - 19 Feb 2019 diff --git a/datapath/linux/compat/ip6_gre.c b/datapath/linux/compat/ip6_gre.c index a95c5f8043a..a2cc45de5af 100644 --- a/datapath/linux/compat/ip6_gre.c +++ b/datapath/linux/compat/ip6_gre.c @@ -2437,7 +2437,7 @@ static struct rtnl_link_ops ip6gre_link_ops __read_mostly = { }; static struct rtnl_link_ops ip6gre_tap_ops __read_mostly = { - .kind = "ip6gre", + .kind = "ip6gretap", .maxtype = RPL_IFLA_GRE_MAX, .policy = ip6gre_policy, .priv_size = sizeof(struct ip6_tnl), diff --git a/lib/dpif-netlink-rtnl.c b/lib/dpif-netlink-rtnl.c index 2e23a8c14fc..582274c4677 100644 --- a/lib/dpif-netlink-rtnl.c +++ b/lib/dpif-netlink-rtnl.c @@ -104,7 +104,13 @@ vport_type_to_kind(enum ovs_vport_type type, case OVS_VPORT_TYPE_IP6ERSPAN: return "ip6erspan"; case OVS_VPORT_TYPE_IP6GRE: - return "ip6gre"; + if (tnl_cfg->pt_mode == NETDEV_PT_LEGACY_L2) { + return "ip6gretap"; + } else if (tnl_cfg->pt_mode == NETDEV_PT_LEGACY_L3) { + return NULL; + } else { + return NULL; + } case OVS_VPORT_TYPE_NETDEV: case OVS_VPORT_TYPE_INTERNAL: case OVS_VPORT_TYPE_LISP: diff --git a/tests/system-traffic.at b/tests/system-traffic.at index d23ee897b0b..8ea45088707 100644 --- a/tests/system-traffic.at +++ b/tests/system-traffic.at @@ -340,6 +340,46 @@ NS_CHECK_EXEC([at_ns0], [ping -s 3200 -q -c 3 -i 0.3 -w 2 10.1.1.100 | FORMAT_PI OVS_TRAFFIC_VSWITCHD_STOP AT_CLEANUP +AT_SETUP([datapath - ping over ip6gre L2 tunnel]) +OVS_CHECK_KERNEL_EXCL(3, 10, 4, 15) +OVS_CHECK_GRE() +OVS_CHECK_ERSPAN() + +OVS_TRAFFIC_VSWITCHD_START() +ADD_BR([br-underlay]) + +AT_CHECK([ovs-ofctl add-flow br0 "actions=normal"]) +AT_CHECK([ovs-ofctl add-flow br-underlay "actions=normal"]) + +ADD_NAMESPACES(at_ns0) + +dnl Set up underlay link from host into the namespace using veth pair. +ADD_VETH(p0, at_ns0, br-underlay, "fc00:100::1/96", [], [], nodad) +AT_CHECK([ip addr add dev br-underlay "fc00:100::100/96" nodad]) +AT_CHECK([ip link set dev br-underlay up]) + +dnl Set up tunnel endpoints on OVS outside the namespace and with a native +dnl linux device inside the namespace. +ADD_OVS_TUNNEL6([ip6gre], [br0], [at_gre0], [fc00:100::1], [10.1.1.100/24], + [options:packet_type=legacy_l2]) +ADD_NATIVE_TUNNEL6([ip6gretap], [ns_gretap0], [at_ns0], [fc00:100::100], + [10.1.1.1/24], [local fc00:100::1]) + +OVS_WAIT_UNTIL([ip netns exec at_ns0 ping6 -c 2 fc00:100::100]) + +dnl First, check the underlay +NS_CHECK_EXEC([at_ns0], [ping6 -q -c 3 -i 0.3 -w 2 fc00:100::100 | FORMAT_PING], [0], [dnl +3 packets transmitted, 3 received, 0% packet loss, time 0ms +]) + +dnl Okay, now check the overlay with different packet sizes +NS_CHECK_EXEC([at_ns0], [ping -q -c 3 -i 0.3 -w 2 10.1.1.100 | FORMAT_PING], [0], [dnl +3 packets transmitted, 3 received, 0% packet loss, time 0ms +]) +OVS_TRAFFIC_VSWITCHD_STOP +AT_CLEANUP + + AT_SETUP([datapath - ping over erspan v1 tunnel]) OVS_CHECK_KERNEL_EXCL(3, 10, 4, 15) OVS_CHECK_GRE() diff --git a/tests/tunnel-push-pop-ipv6.at b/tests/tunnel-push-pop-ipv6.at index cbdd5a32f71..59723e63b84 100644 --- a/tests/tunnel-push-pop-ipv6.at +++ b/tests/tunnel-push-pop-ipv6.at @@ -1,5 +1,74 @@ AT_BANNER([tunnel_push_pop_ipv6]) +AT_SETUP([tunnel_push_pop_ipv6 - ip6gre]) + +OVS_VSWITCHD_START([add-port br0 p0 -- set Interface p0 type=dummy ofport_request=1 other-config:hwaddr=aa:55:aa:55:00:00]) +AT_CHECK([ovs-vsctl add-br int-br -- set bridge int-br datapath_type=dummy], [0]) +AT_CHECK([ovs-vsctl add-port int-br t2 -- set Interface t2 type=ip6gre \ + options:remote_ip=2001:cafe::92 ofport_request=2\ + options:packet_type=legacy_l2 + ], [0]) + +AT_CHECK([ovs-appctl dpif/show], [0], [dnl +dummy@ovs-dummy: hit:0 missed:0 + br0: + br0 65534/100: (dummy-internal) + p0 1/1: (dummy) + int-br: + int-br 65534/2: (dummy-internal) + t2 2/6: (ip6gre: remote_ip=2001:cafe::92) +]) + +dnl First setup dummy interface IP address, then add the route +dnl so that tnl-port table can get valid IP address for the device. +AT_CHECK([ovs-appctl netdev-dummy/ip6addr br0 2001:cafe::88/24], [0], [OK +]) +AT_CHECK([ovs-appctl netdev-dummy/ip4addr br0 1.1.2.88/24], [0], [OK +]) +AT_CHECK([ovs-appctl ovs/route/add 2001:cafe::92/24 br0], [0], [OK +]) + +AT_CHECK([ovs-ofctl add-flow br0 action=normal]) + +dnl Check Neighbour discovery. +AT_CHECK([ovs-vsctl -- set Interface p0 options:pcap=p0.pcap]) + +AT_CHECK([ovs-appctl netdev-dummy/receive int-br 'in_port(2),eth(src=aa:55:aa:55:00:00,dst=f8:bc:12:ff:ff:ff),eth_type(0x0800),ipv4(src=1.1.3.92,dst=1.1.3.88,proto=1,tos=0,ttl=64,frag=no),icmp(type=0,code=0)']) +AT_CHECK([ovs-pcap p0.pcap > p0.pcap.txt 2>&1]) + +AT_CHECK([cat p0.pcap.txt | grep 92aa55aa55000086dd6000000000203aff2001cafe | uniq], [0], [dnl +3333ff000092aa55aa55000086dd6000000000203aff2001cafe000000000000000000000088ff0200000000000000000001ff00009287004d48000000002001cafe0000000000000000000000920101aa55aa550000 +]) + +dnl +AT_CHECK([ovs-appctl netdev-dummy/receive p0 'in_port(1),eth(src=f8:bc:12:44:34:b6,dst=aa:55:aa:55:00:00),eth_type(0x86dd),ipv6(src=2001:cafe::92,dst=2001:cafe::88,label=0,proto=58,tclass=0,hlimit=255,frag=no),icmpv6(type=136,code=0),nd(target=2001:cafe::92,sll=00:00:00:00:00:00,tll=f8:bc:12:44:34:b6)']) + +AT_CHECK([ovs-appctl tnl/arp/show | tail -n+3 | sort], [0], [dnl +2001:cafe::92 f8:bc:12:44:34:b6 br0 +]) + +AT_CHECK([ovs-appctl tnl/ports/show |sort], [0], [dnl +Listening ports: +ip6gre_sys (6) ref_cnt=1 +]) + +dnl Check IPv6 GRE tunnel pop +AT_CHECK([ovs-appctl ofproto/trace ovs-dummy 'in_port(1),eth(src=f8:bc:12:44:34:b6,dst=aa:55:aa:55:00:00),eth_type(0x86dd),ipv6(src=2001:cafe::92,dst=2001:cafe::88,label=0,proto=47,tclass=0x0,hlimit=64)'], [0], [stdout]) +AT_CHECK([tail -1 stdout], [0], + [Datapath actions: tnl_pop(6) +]) + +dnl Check IPv6 GRE tunnel push +AT_CHECK([ovs-ofctl add-flow int-br action=2]) +AT_CHECK([ovs-appctl ofproto/trace ovs-dummy 'in_port(2),eth(src=f8:bc:12:44:34:b6,dst=aa:55:aa:55:00:01),eth_type(0x0800),ipv4(src=1.1.3.88,dst=1.1.3.112,proto=47,tos=0,ttl=64,frag=no)'], [0], [stdout]) + +AT_CHECK([tail -1 stdout], [0], + [Datapath actions: clone(tnl_push(tnl_port(6),header(size=58,type=109,eth(dst=f8:bc:12:44:34:b6,src=aa:55:aa:55:00:00,dl_type=0x86dd),ipv6(src=2001:cafe::88,dst=2001:cafe::92,label=0,proto=47,tclass=0x0,hlimit=64),gre((flags=0x0,proto=0x6558))),out_port(100)),1) +]) + +OVS_VSWITCHD_STOP +AT_CLEANUP + AT_SETUP([tunnel_push_pop_ipv6 - ip6erspan]) OVS_VSWITCHD_START([add-port br0 p0 -- set Interface p0 type=dummy ofport_request=1 other-config:hwaddr=aa:55:aa:55:00:00]) diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml index 69fce7ffb00..dc31b282dcd 100644 --- a/vswitchd/vswitch.xml +++ b/vswitchd/vswitch.xml @@ -2554,10 +2554,16 @@
gre
- Generic Routing Encapsulation (GRE) over IPv4/IPv6 tunnel, + Generic Routing Encapsulation (GRE) over IPv4 tunnel, configurable to encapsulate layer 2 or layer 3 traffic.
+
ip6gre
+
+ Generic Routing Encapsulation (GRE) over IPv6 tunnel, + encapsulate layer 2 traffic. +
+
vxlan

@@ -2616,8 +2622,8 @@

These options apply to interfaces with of - geneve, gre, vxlan, - lisp and stt. + geneve, gre, ip6gre, + vxlan, lisp and stt.

@@ -2914,10 +2920,10 @@ - +

- gre, geneve, and - vxlan interfaces support these options. + gre, ip6gre, geneve, + and vxlan interfaces support these options.

@@ -2931,8 +2937,9 @@

When using the upstream Linux kernel module, computation of checksums for geneve and vxlan requires - Linux kernel version 4.0 or higher. gre supports - checksums for all versions of Open vSwitch that support GRE. + Linux kernel version 4.0 or higher. gre and + ip6gre support checksums for all versions of + Open vSwitch that support GRE. The out of tree kernel module distributed as part of OVS can compute all tunnel checksums on any kernel version that it is compatible with. @@ -2944,10 +2951,11 @@

Setting any of these options enables IPsec support for a given - tunnel. gre, geneve, vxlan, - and stt interfaces support these options. See the - IPsec section in the table - for a description of each mode. + tunnel. gre, ip6gre, + geneve, vxlan and stt + interfaces support these options. See the IPsec + section in the table for a description + of each mode.