Hello,
I'm trying to use OVS 2.11.9 (without controller) in Ubuntu 14.04 to push NSH
and ETH headers to an ICMP packet. The topology is as follows:
Client ---> (p1p1) Classifier (p1p2) ---> Server
where p1p1 and p1p2 interfaces on the classifier are bound to the OVS bridge
br0.
The problem is that after a packet enters classifier's p1p1, it gets dropped by
OVS datapath before it reaches br0.
dmesg shows error message as
[ 3538.861851] openvswitch: netlink: Flow actions may not be safe on all
matching packets.
ovs-vswitchd.log shows
2019-06-20T13:05:13.942Z|03925|dpif(handler7)|WARN|system@ovs-system: failed to
put[create] (Invalid argument) ufid:7f5e3b96-75ba-4a36-8385-fcb4ee4cda93
recirc_id(0),dp_hash(0/0),skb_priority(0/0),in_port(2),skb_mark(0/0),eth(src=a0:36:9f:a3:5e:f0,dst=a0:36:9f:a3:5c:30),eth_type(0x0800),ipv4(src=10.0.0.1/0.0.0.0,dst=13.0.0.1,proto=1/0,tos=0/0,ttl=64/0,frag=no),icmp(type=8/0,code=0/0),
actions:push_nsh(flags=2,ttl=63,mdtype=1,np=3,spi=0x1234,si=255,c1=0x11223344,c2=0x11223344,c3=0x11223344,c4=0x11223344),push_eth(src=a0:36:9f:a3:5c:30,dst=a0:36:9f:8e:4b:48),1
Any suggestion please?
== dump-flows output ==
root@ovs-br-1:/home/chang# ovs-ofctl -O Openflow13 dump-flows br0
cookie=0x0, duration=669.284s, table=0, n_packets=669, n_bytes=65562,
ip,in_port=p1p1,nw_dst=13.0.0.1
actions=encap(nsh(md_type=1)),set_field:2->nsh_flags,set_field:0x1234->nsh_spi,set_field:255->nsh_si,set_field:63->nsh_ttl,set_field:0x11223344->nsh_c1,set_field:0x11223344->nsh_c2,set_field:0x11223344->nsh_c3,set_field:0x11223344->nsh_c4,goto_table:4
cookie=0x0, duration=669.281s, table=0, n_packets=16, n_bytes=960,
reset_counts priority=1000,arp,arp_tpa=10.0.0.10,arp_op=1
actions=move:NXM_OF_ETH_SRC[]->NXM_OF_ETH_DST[],set_field:a0:36:9f:a3:5c:30->eth_src,load:0x2->NXM_OF_ARP_OP[],move:NXM_NX_ARP_SHA[]->NXM_NX_ARP_THA[],load:0xa0369fa35c30->NXM_NX_ARP_SHA[],move:NXM_OF_ARP_SPA[]->NXM_OF_ARP_TPA[],load:0xa00000a->NXM_OF_ARP_SPA[],IN_PORT
cookie=0x0, duration=669.252s, table=4, n_packets=669, n_bytes=65562,
packet_type=(1,0x894f)
actions=encap(ethernet),set_field:a0:36:9f:a3:5c:30->eth_src,set_field:a0:36:9f:8e:4b:48->eth_dst,goto_table:10
cookie=0x0, duration=552.056s, table=10, n_packets=552, n_bytes=54096,
dl_type=0x894f actions=output:p1p2
== appctl trace output ==
Flow:
ip,in_port=1,vlan_tci=0x0000,dl_src=00:00:00:00:00:00,dl_dst=00:00:00:00:00:00,nw_src=0.0.0.0,nw_dst=13.0.0.1,nw_proto=0,nw_tos=0,nw_ecn=0,nw_ttl=0
bridge("br0")
-------------
0. ip,in_port=1,nw_dst=13.0.0.1, priority 32768
encap(nsh(md_type=1))
set_field:2->nsh_flags
set_field:0x1234->nsh_spi
set_field:255->nsh_si
set_field:63->nsh_ttl
set_field:0x11223344->nsh_c1
set_field:0x11223344->nsh_c2
set_field:0x11223344->nsh_c3
set_field:0x11223344->nsh_c4
goto_table:4
4. packet_type=(1,0x894f), priority 32768
encap(ethernet)
set_field:a0:36:9f:a3:5c:30->eth_src
set_field:a0:36:9f:8e:4b:48->eth_dst
goto_table:10
10. dl_type=0x894f, priority 32768
output:2
Final flow:
in_port=1,vlan_tci=0x0000,dl_src=a0:36:9f:a3:5c:30,dl_dst=a0:36:9f:8e:4b:48,dl_type=0x894f,nsh_flags=2,nsh_ttl=63,nsh_mdtype=1,nsh_np=3,nsh_spi=0x1234,nsh_si=255,nsh_c1=0x11223344,nsh_c2=0x11223344,nsh_c3=0x11223344,nsh_c4=0x11223344,nw_proto=0,nw_tos=0,nw_ecn=0,nw_ttl=0
Megaflow:
recirc_id=0,eth,ip,in_port=1,dl_src=00:00:00:00:00:00,dl_dst=00:00:00:00:00:00,nw_dst=13.0.0.1,nw_frag=no
Datapath actions:
push_nsh(flags=2,ttl=63,mdtype=1,np=3,spi=0x1234,si=255,c1=0x11223344,c2=0x11223344,c3=0x11223344,c4=0x11223344),push_eth(src=a0:36:9f:a3:5c:30,dst=a0:36:9f:8e:4b:48),1
== ovs-vsctl output ==
9e1192fd-3f02-497f-90e5-64d24b24932f
Bridge "br0"
Port "p1p1"
Interface "p1p1"
Port "br0"
Interface "br0"
type: internal
Port "p1p2"
Interface "p1p2"
ovs_version: "2.11.90"
Regards,
Chang
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