[ovs-discuss] Do you know how I can set nd_options_type field for ipv6 ND message?

[William Tu]

On Sat, Feb 20, 2021 at 2:11 AM Yi Yang (杨燚)-云服务集团 <yangyi01 at inspur.com> wrote:
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> Hi, folks
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> I need to set nd_options_type to 2 for NS message to respond IPv6 NS, my flow is below, why nd_options_type can’t be set? Per commit 9b2b84973db76e1138d9234ff1b84bb6bb156011, it should work, what’s wrong? Appreciate your help in advance, thank you.
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> $ sudo ovs-ofctl -Oopenflow13 add-flow br-int "table=0,ipv6,icmp6,icmp_type=135,icmp_code=0,nd_target=fe80::505c:cff:fe88:392f,nd_sll=52:5c:0c:88:39:2f,actions=set_field:136->icmpv6_type,set_field:0->icmpv6_code,move:NXM_OF_ETH_SRC[]->NXM_OF_ETH_DST[],set_field:52:5c:0c:88:39:3f->eth_src,move:NXM_NX_IPV6_SRC[]->NXM_NX_IPV6_DST[],set_field:fe80::505c:cff:fe88:392f->ipv6_src,set_field:52:5c:0c:88:39:3f->nd_tll,set_field:2->nd_options_type,set_field:OxE000->nd_reserved,output:IN_PORT"
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> ovs-ofctl: nd_options_type is not a valid OXM field name
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> $ sudo ovs-ofctl -Oopenflow13 add-flow br-int "table=0,ipv6,icmp6,icmp_type=135,icmp_code=0,nd_target=fe80::505c:cff:fe88:392f,nd_sll=52:5c:0c:88:39:2f,actions=set_field:136->icmpv6_type,set_field:0->icmpv6_code,move:NXM_OF_ETH_SRC[]->NXM_OF_ETH_DST[],set_field:52:5c:0c:88:39:3f->eth_src,move:NXM_NX_IPV6_SRC[]->NXM_NX_IPV6_DST[],set_field:fe80::505c:cff:fe88:392f->ipv6_src,set_field:52:5c:0c:88:39:3f->nd_tll,load:2->ERICOXM_OF_ICMPV6_ND_OPTIONS_TYPE[],set_field:OxE000->nd_reserved,output:IN_PORT"
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> ovs-ofctl: ERICOXM_OF_ICMPV6_ND_OPTIONS_TYPE[]: unknown field `ERICOXM_OF_ICMPV6_ND_OPTIONS_TYPE'

I tested by doing
roos:~/ovs# ovs-ofctl add-flow br0 "in_port=1
icmp6,icmpv6_code=0,icmpv6_type=135
actions=set_field:2->nd_options_type, 2"
roos:~/ovs# ovs-ofctl dump-flows br0
 cookie=0x0, duration=8.492s, table=0, n_packets=0, n_bytes=0,
icmp6,in_port="afxdp-p0",icmp_type=135,icmp_code=0
actions=load:0x2->ERICOXM_OF_ICMPV6_ND_OPTIONS_TYPE[],output:2
 cookie=0x0, duration=1078.248s, table=0, n_packets=0, n_bytes=0,
priority=0 actions=NORMAL

Looks ok.
William