From: Jan Scheurich <jan.scheur...@ericsson.com>
Add a boolean "layer3" configuration option for tunnel vports.
The layer3 option defaults to false for all ports except LISP.
GRE ports accept both true and false for "layer3".
A tunnel vport configured with layer3=true receives L3 packets.
which are then converted to Ethernet packets by pushing a dummy
Ethernet heder at the ingress of the OpenFlow pipeline. The
Ethernet header of a packet is stripped before sending to a
layer3 tunnel vport.
Presently a single GRE vport cannot carry both L2 and L3 packets.
But it is possible to create two GRE vports representing the same
GRE tunel, one with layer3=false, the other with layer3=true.
L2 packet from the tunnel are received on the first vport, L3
packets on the second. The controller must send packets to the
layer3 GRE vport to tunnel them without their Ethernet header.
Units tests have been added to check the L3 tunnel handling.
Signed-off-by: Simon Horman <simon.hor...@netronome.com>
Signed-off-by: Jiri Benc <jb...@redhat.com>
Signed-off-by: Yi Yang <yi.y.y...@intel.com>
Signed-off-by; Jan Scheurich <jan.scheur...@ericsson.com>
Co-authored-by: Zoltan Balogh <zoltan.bal...@ericsson.com>
---
lib/netdev-native-tnl.c | 27 ++++++++++++++++++++++-----
lib/netdev-vport.c | 14 ++++++++++++--
ofproto/tunnel.c | 14 +++++++++++---
tests/tunnel-push-pop-ipv6.at | 15 ++++++++++-----
tests/tunnel-push-pop.at | 33 +++++++++++++++++++++++++++------
vswitchd/vswitch.xml | 13 +++++++++++++
6 files changed, 95 insertions(+), 21 deletions(-)
diff --git a/lib/netdev-native-tnl.c b/lib/netdev-native-tnl.c
index 2798324..b48fccd 100644
--- a/lib/netdev-native-tnl.c
+++ b/lib/netdev-native-tnl.c
@@ -154,6 +154,10 @@ netdev_tnl_push_ip_header(struct dp_packet *packet,
*ip_tot_size = dp_packet_size(packet) - sizeof (struct eth_header);
memcpy(eth, header, size);
+ /* The encapsulated packet has type Ethernet. Adjust dp_packet. */
+ packet->packet_type = htonl(PT_ETH);
+ dp_packet_reset_offsets(packet);
+ packet->l3_ofs = sizeof (struct eth_header);
if (netdev_tnl_is_header_ipv6(header)) {
ip6 = netdev_tnl_ipv6_hdr(eth);
@@ -345,6 +349,7 @@ parse_gre_header(struct dp_packet *packet,
ovs_16aligned_be32 *options;
int hlen;
unsigned int ulen;
+ uint16_t greh_protocol;
greh = netdev_tnl_ip_extract_tnl_md(packet, tnl, &ulen);
if (!greh) {
@@ -355,10 +360,6 @@ parse_gre_header(struct dp_packet *packet,
return -EINVAL;
}
- if (greh->protocol != htons(ETH_TYPE_TEB)) {
- return -EINVAL;
- }
-
hlen = ulen + gre_header_len(greh->flags);
if (hlen > dp_packet_size(packet)) {
return -EINVAL;
@@ -388,6 +389,15 @@ parse_gre_header(struct dp_packet *packet,
options++;
}
+ /* Set the new packet type depending on the GRE protocol field. */
+ greh_protocol = ntohs(greh->protocol);
+ if (greh_protocol == ETH_TYPE_TEB) {
+ packet->packet_type = htonl(PT_ETH);
+ } else {
+ /* Allow all GRE protocol values as Ethertypes */
+ packet->packet_type = PACKET_TYPE_BE(OFPHTN_ETHERTYPE, greh_protocol);
+ }
+
return hlen;
}
@@ -451,7 +461,12 @@ netdev_gre_build_header(const struct netdev *netdev,
greh = netdev_tnl_ip_build_header(data, params, IPPROTO_GRE);
- greh->protocol = htons(ETH_TYPE_TEB);
+ /* XXX: Needs fixing for versatile tunnels in PTAP bridges */
+ if (tnl_cfg->is_layer3) {
+ greh->protocol = params->flow->dl_type;
+ } else {
+ greh->protocol = htons(ETH_TYPE_TEB);
+ }
greh->flags = 0;
options = (ovs_16aligned_be32 *) (greh + 1);
@@ -504,6 +519,7 @@ netdev_vxlan_pop_header(struct dp_packet *packet)
tnl->tun_id = htonll(ntohl(get_16aligned_be32(&vxh->vx_vni)) >> 8);
tnl->flags |= FLOW_TNL_F_KEY;
+ packet->packet_type = htonl(PT_ETH);
dp_packet_reset_packet(packet, hlen + VXLAN_HLEN);
return packet;
@@ -583,6 +599,7 @@ netdev_geneve_pop_header(struct dp_packet *packet)
tnl->metadata.present.len = opts_len;
tnl->flags |= FLOW_TNL_F_UDPIF;
+ packet->packet_type = htonl(PT_ETH);
dp_packet_reset_packet(packet, hlen);
return packet;
diff --git a/lib/netdev-vport.c b/lib/netdev-vport.c
index a6c1e23..8653e96 100644
--- a/lib/netdev-vport.c
+++ b/lib/netdev-vport.c
@@ -410,7 +410,7 @@ set_tunnel_config(struct netdev *dev_, const struct smap
*args, char **errp)
const char *name = netdev_get_name(dev_);
const char *type = netdev_get_type(dev_);
struct ds errors = DS_EMPTY_INITIALIZER;
- bool needs_dst_port, has_csum;
+ bool needs_dst_port, has_csum, optional_layer3;
uint16_t dst_proto = 0, src_proto = 0;
struct netdev_tunnel_config tnl_cfg;
struct smap_node *node;
@@ -418,6 +418,7 @@ set_tunnel_config(struct netdev *dev_, const struct smap
*args, char **errp)
has_csum = strstr(type, "gre") || strstr(type, "geneve") ||
strstr(type, "stt") || strstr(type, "vxlan");
+ optional_layer3 = !strcmp(type, "gre");
memset(&tnl_cfg, 0, sizeof tnl_cfg);
/* Add a default destination port for tunnel ports if none specified. */
@@ -431,6 +432,7 @@ set_tunnel_config(struct netdev *dev_, const struct smap
*args, char **errp)
if (!strcmp(type, "lisp")) {
tnl_cfg.dst_port = htons(LISP_DST_PORT);
+ tnl_cfg.is_layer3 = true;
}
if (!strcmp(type, "stt")) {
@@ -518,6 +520,10 @@ set_tunnel_config(struct netdev *dev_, const struct smap
*args, char **errp)
} else if (!strcmp(node->key, "egress_pkt_mark")) {
tnl_cfg.egress_pkt_mark = strtoul(node->value, NULL, 10);
tnl_cfg.set_egress_pkt_mark = true;
+ } else if (!strcmp(node->key, "layer3") && optional_layer3) {
+ if (!strcmp(node->value, "true")) {
+ tnl_cfg.is_layer3 = true;
+ }
} else {
ds_put_format(&errors, "%s: unknown %s argument '%s'\n",
name, type, node->key);
@@ -587,6 +593,7 @@ static int
get_tunnel_config(const struct netdev *dev, struct smap *args)
{
struct netdev_vport *netdev = netdev_vport_cast(dev);
+ const char *type = netdev_get_type(dev);
struct netdev_tunnel_config tnl_cfg;
ovs_mutex_lock(&netdev->mutex);
@@ -640,7 +647,6 @@ get_tunnel_config(const struct netdev *dev, struct smap
*args)
if (tnl_cfg.dst_port) {
uint16_t dst_port = ntohs(tnl_cfg.dst_port);
- const char *type = netdev_get_type(dev);
if ((!strcmp("geneve", type) && dst_port != GENEVE_DST_PORT) ||
(!strcmp("vxlan", type) && dst_port != VXLAN_DST_PORT) ||
@@ -654,6 +660,10 @@ get_tunnel_config(const struct netdev *dev, struct smap
*args)
smap_add(args, "csum", "true");
}
+ if (tnl_cfg.is_layer3 && !strcmp("gre", type)) {
+ smap_add(args, "layer3", "true");
+ }
+
if (!tnl_cfg.dont_fragment) {
smap_add(args, "df_default", "false");
}
diff --git a/ofproto/tunnel.c b/ofproto/tunnel.c
index 3d02005..0da4f42 100644
--- a/ofproto/tunnel.c
+++ b/ofproto/tunnel.c
@@ -38,6 +38,7 @@
#include "openvswitch/vlog.h"
#include "unaligned.h"
#include "ofproto-dpif.h"
+#include "netdev-vport.h"
VLOG_DEFINE_THIS_MODULE(tunnel);
@@ -49,6 +50,7 @@ struct tnl_match {
bool in_key_flow;
bool ip_src_flow;
bool ip_dst_flow;
+ bool is_layer3;
};
struct tnl_port {
@@ -162,6 +164,7 @@ tnl_port_add__(const struct ofport_dpif *ofport, const
struct netdev *netdev,
tnl_port->match.ip_dst_flow = cfg->ip_dst_flow;
tnl_port->match.in_key_flow = cfg->in_key_flow;
tnl_port->match.odp_port = odp_port;
+ tnl_port->match.is_layer3 = netdev_vport_is_layer3(netdev);
map = tnl_match_map(&tnl_port->match);
existing_port = tnl_find_exact(&tnl_port->match, *map);
@@ -205,7 +208,8 @@ tnl_port_add__(const struct ofport_dpif *ofport, const
struct netdev *netdev,
* Returns 0 if successful, otherwise a positive errno value. */
int
tnl_port_add(const struct ofport_dpif *ofport, const struct netdev *netdev,
- odp_port_t odp_port, bool native_tnl, const char name[])
OVS_EXCLUDED(rwlock)
+ odp_port_t odp_port, bool native_tnl, const char name[])
+ OVS_EXCLUDED(rwlock)
{
bool ok;
@@ -232,7 +236,8 @@ tnl_port_reconfigure(const struct ofport_dpif *ofport,
fat_rwlock_wrlock(&rwlock);
tnl_port = tnl_find_ofport(ofport);
if (!tnl_port) {
- changed = tnl_port_add__(ofport, netdev, odp_port, false, native_tnl,
name);
+ changed = tnl_port_add__(ofport, netdev, odp_port, false, native_tnl,
+ name);
} else if (tnl_port->netdev != netdev
|| tnl_port->match.odp_port != odp_port
|| tnl_port->change_seq !=
netdev_get_change_seq(tnl_port->netdev)) {
@@ -383,7 +388,6 @@ tnl_wc_init(struct flow *flow, struct flow_wildcards *wc)
}
/* Match on packet_type for tunneled packets.*/
wc->masks.packet_type = OVS_BE32_MAX;
-
}
}
@@ -562,6 +566,7 @@ tnl_find(const struct flow *flow) OVS_REQ_RDLOCK(rwlock)
match.in_key_flow = in_key_flow;
match.ip_dst_flow = ip_dst_flow;
match.ip_src_flow = ip_src == IP_SRC_FLOW;
+ match.is_layer3 = flow->packet_type != htonl(PT_ETH);
tnl_port = tnl_find_exact(&match, map);
if (tnl_port) {
@@ -611,6 +616,9 @@ tnl_match_fmt(const struct tnl_match *match, struct ds *ds)
} else {
ds_put_format(ds, ", key=%#"PRIx64, ntohll(match->in_key));
}
+ if (match->is_layer3) {
+ ds_put_cstr(ds, ", layer3");
+ }
ds_put_format(ds, ", dp port=%"PRIu32, match->odp_port);
}
diff --git a/tests/tunnel-push-pop-ipv6.at b/tests/tunnel-push-pop-ipv6.at
index 3f3d5ee..dedda8c 100644
--- a/tests/tunnel-push-pop-ipv6.at
+++ b/tests/tunnel-push-pop-ipv6.at
@@ -12,6 +12,8 @@ AT_CHECK([ovs-vsctl add-port int-br t2 -- set Interface t2
type=vxlan \
options:remote_ip=2001:cafe::93 options:out_key=flow
options:csum=true ofport_request=4\
-- add-port int-br t4 -- set Interface t4 type=geneve \
options:remote_ip=flow options:key=123 ofport_request=5\
+ -- add-port int-br t5 -- set Interface t5 type=gre \
+ options:remote_ip=2001:cafe::92 options:key=455
options:layer3=true ofport_request=6\
], [0])
AT_CHECK([ovs-appctl dpif/show], [0], [dnl
@@ -25,6 +27,7 @@ dummy@ovs-dummy: hit:0 missed:0
t2 2/4789: (vxlan: key=123, remote_ip=2001:cafe::92)
t3 4/4789: (vxlan: csum=true, out_key=flow,
remote_ip=2001:cafe::93)
t4 5/6081: (geneve: key=123, remote_ip=flow)
+ t5 6/3: (gre: key=455, layer3=true, remote_ip=2001:cafe::92)
])
dnl First setup dummy interface IP address, then add the route
@@ -124,18 +127,20 @@ AT_CHECK([tail -1 stdout], [0],
dnl Check decapsulation of GRE packet
AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6486dd60000000006a2f402001cafe0000000000000000000000922001cafe00000000000000000000008820006558000001c8fe71d883724fbeb6f4e1494a080045000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
+AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6486dd60000000006a2f402001cafe0000000000000000000000922001cafe00000000000000000000008820006558000001c8fe71d883724fbeb6f4e1494a080045000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
ovs-appctl time/warp 1000
AT_CHECK([ovs-ofctl dump-ports int-br | grep 'port 3'], [0], [dnl
- port 3: rx pkts=1, bytes=98, drop=?, errs=?, frame=?, over=?, crc=?
+ port 3: rx pkts=2, bytes=196, drop=?, errs=?, frame=?, over=?, crc=?
])
-dnl Check GRE only accepts encapsulated Ethernet frames
-AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6486dd60000000006a2f402001cafe0000000000000000000000922001cafe00000000000000000000008820000800000001c8fe71d883724fbeb6f4e1494a080045000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
+dnl Check decapsulation of L3GRE packet
+AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6486dd60000000005a2f402001cafe0000000000000000000000922001cafe00000000000000000000008820000800000001c745000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
+AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6486dd60000000005a2f402001cafe0000000000000000000000922001cafe00000000000000000000008820000800000001c745000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
ovs-appctl time/warp 1000
-AT_CHECK([ovs-ofctl dump-ports int-br | grep 'port 3'], [0], [dnl
- port 3: rx pkts=1, bytes=98, drop=?, errs=?, frame=?, over=?, crc=?
+AT_CHECK([ovs-ofctl dump-ports int-br | grep 'port 6'], [0], [dnl
+ port 6: rx pkts=2, bytes=168, drop=?, errs=?, frame=?, over=?, crc=?
])
dnl Check decapsulation of Geneve packet with options
diff --git a/tests/tunnel-push-pop.at b/tests/tunnel-push-pop.at
index f7e9f89..7fe67aa 100644
--- a/tests/tunnel-push-pop.at
+++ b/tests/tunnel-push-pop.at
@@ -14,6 +14,8 @@ AT_CHECK([ovs-vsctl add-port int-br t2 -- set Interface t2
type=vxlan \
options:remote_ip=flow options:key=123 ofport_request=5\
-- add-port int-br t5 -- set Interface t5 type=geneve \
options:remote_ip=1.1.2.93 options:out_key=flow
options:egress_pkt_mark=1234 ofport_request=6\
+ -- add-port int-br t6 -- set Interface t6 type=gre \
+ options:remote_ip=1.1.2.92 options:key=456
options:layer3=true ofport_request=7\
], [0])
AT_CHECK([ovs-appctl dpif/show], [0], [dnl
@@ -28,6 +30,7 @@ dummy@ovs-dummy: hit:0 missed:0
t3 4/4789: (vxlan: csum=true, out_key=flow, remote_ip=1.1.2.93)
t4 5/6081: (geneve: key=123, remote_ip=flow)
t5 6/6081: (geneve: egress_pkt_mark=1234, out_key=flow,
remote_ip=1.1.2.93)
+ t6 7/3: (gre: key=456, layer3=true, remote_ip=1.1.2.92)
])
dnl First setup dummy interface IP address, then add the route
@@ -120,8 +123,14 @@ AT_CHECK([tail -1 stdout], [0],
dnl Check GRE tunnel push
AT_CHECK([ovs-ofctl add-flow int-br action=3])
AT_CHECK([ovs-appctl ofproto/trace ovs-dummy
'in_port(2),eth(src=f8:bc:12:44:34:b6,dst=aa:55:aa:55:00:00),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:
tnl_push(tnl_port(3),header(size=42,type=3,eth(dst=f8:bc:12:44:34:b6,src=aa:55:aa:55:00:00,dl_type=0x0800),ipv4(src=1.1.2.88,dst=1.1.2.92,proto=47,tos=0,ttl=64,frag=0x4000),gre((flags=0x2000,proto=0x6558),key=0x1c8)),out_port(100))
+])
+
+dnl Check L3GRE tunnel push
+AT_CHECK([ovs-ofctl add-flow int-br action=7])
+AT_CHECK([ovs-appctl ofproto/trace ovs-dummy
'in_port(2),eth(src=f8:bc:12:44:34:b6,dst=aa:55:aa:55:00:00),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:
tnl_push(tnl_port(3),header(size=42,type=3,eth(dst=f8:bc:12:44:34:b6,src=aa:55:aa:55:00:00,dl_type=0x0800),ipv4(src=1.1.2.88,dst=1.1.2.92,proto=47,tos=0,ttl=64,frag=0x4000),gre((flags=0x2000,proto=0x6558),key=0x1c8)),out_port(100))
+ [Datapath actions:
pop_eth,tnl_push(tnl_port(3),header(size=42,type=3,eth(dst=f8:bc:12:44:34:b6,src=aa:55:aa:55:00:00,dl_type=0x0800),ipv4(src=1.1.2.88,dst=1.1.2.92,proto=47,tos=0,ttl=64,frag=0x4000),gre((flags=0x2000,proto=0x800),key=0x1c8)),out_port(100))
])
dnl Check Geneve tunnel push
@@ -148,18 +157,30 @@ AT_CHECK([tail -1 stdout], [0],
dnl Check decapsulation of GRE packet
AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6408004500007e79464000402fba550101025c0101025820006558000001c8fe71d883724fbeb6f4e1494a080045000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
+AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6408004500007e79464000402fba550101025c0101025820006558000001c8fe71d883724fbeb6f4e1494a080045000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
+AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6408004500007e79464000402fba550101025c0101025820006558000001c8fe71d883724fbeb6f4e1494a080045000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
ovs-appctl time/warp 1000
AT_CHECK([ovs-ofctl dump-ports int-br | grep 'port 3'], [0], [dnl
- port 3: rx pkts=1, bytes=98, drop=?, errs=?, frame=?, over=?, crc=?
+ port 3: rx pkts=3, bytes=294, drop=?, errs=?, frame=?, over=?, crc=?
])
-dnl Check GRE only accepts encapsulated Ethernet frames
-AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6408004500007e79464000402fba550101025c0101025820000800000001c8fe71d883724fbeb6f4e1494a080045000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
+dnl Check decapsulation of L3GRE packet
+AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6408004500007079464000402fba630101025c0101025820000800000001c845000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
+AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6408004500007079464000402fba630101025c0101025820000800000001c845000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
+AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6408004500007079464000402fba630101025c0101025820000800000001c845000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
ovs-appctl time/warp 1000
-AT_CHECK([ovs-ofctl dump-ports int-br | grep 'port 3'], [0], [dnl
- port 3: rx pkts=1, bytes=98, drop=?, errs=?, frame=?, over=?, crc=?
+AT_CHECK([ovs-ofctl dump-ports int-br | grep 'port 7'], [0], [dnl
+ port 7: rx pkts=3, bytes=252, drop=?, errs=?, frame=?, over=?, crc=?
+])
+
+dnl Check GREL3 only accepts non-fragmented packets?
+AT_CHECK([ovs-appctl netdev-dummy/receive p0
'aa55aa550000001b213cab6408004500007e79464000402fba550101025c0101025820000800000001c8fe71d883724fbeb6f4e1494a080045000054ba200000400184861e0000011e00000200004227e75400030af3195500000000f265010000000000101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637'])
+
+AT_CHECK([ovs-ofctl dump-ports int-br | grep 'port [[37]]' | sort], [0], [dnl
+ port 3: rx pkts=3, bytes=294, drop=?, errs=?, frame=?, over=?, crc=?
+ port 7: rx pkts=3, bytes=252, drop=?, errs=?, frame=?, over=?, crc=?
])
dnl Check decapsulation of Geneve packet with options
diff --git a/vswitchd/vswitch.xml b/vswitchd/vswitch.xml
index 14297bf..78caa0f 100644
--- a/vswitchd/vswitch.xml
+++ b/vswitchd/vswitch.xml
@@ -2376,6 +2376,19 @@
</group>
+ <group title="Tunnel Options: gre only">
+ <p>
+ <code>gre</code> interfaces support these options.
+ </p>
+
+ <column name="options" key="layer3" type='{"type": "boolean"}'>
+ <p>
+ Optional. Packets are sent and received without an Ethernet
+ header present.
+ </p>
+ </column>
+ </group>
+
<group title="Tunnel Options: gre, geneve, and vxlan">
<p>
<code>gre</code>, <code>geneve</code>, and
--
2.7.4
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