[ovs-dev] [PATCH 5/8] ofproto: Match on IP ToS/DSCP bits (OpenFlow 1.0)
jpettit at nicira.com
Fri Jan 22 15:43:21 PST 2010
On Jan 22, 2010, at 10:07 AM, Ben Pfaff wrote:
> I don't know why; I applied all of the previous patches on top of the
> openflow-0.9 branch.
>> @@ -244,6 +244,7 @@ int flow_extract(struct sk_buff *skb, u16 in_port, struct odp_flow_key *key)
>> int th_ofs = nh_ofs + nh->ihl * 4;
>> key->nw_src = nh->saddr;
>> key->nw_dst = nh->daddr;
>> + key->nw_tos = nh->tos & 0xfc;
>> key->nw_proto = nh->protocol;
>> skb_set_transport_header(skb, th_ofs);
> I guess I always assumed that the TOS bits would be in the least
> significant 6 bits of the nw_tos field, i.e. nh->tos >> 2. I hope that
> the OpenFlow specification is clear about this one way or another?
That makes two of us. And, no, it's not clear in the spec. I've got a couple of items that I'm going to send out later to the OpenFlow folks about the spec and reference implementation.
>> @@ -291,11 +295,11 @@ void
>> flow_format(struct ds *ds, const flow_t *flow)
>> ds_put_format(ds, "in_port%04x:vlan%d:pcp%d mac"ETH_ADDR_FMT
>> - "->"ETH_ADDR_FMT" type%04x proto%"PRId8" ip"IP_FMT
>> + "->"ETH_ADDR_FMT" type%04x proto%"PRId8" tos%d ip"IP_FMT
> __u8 should be printed with PRIu8.
>> "->"IP_FMT" port%d->%d",
>> flow->in_port, ntohs(flow->dl_vlan), flow->dl_vlan_pcp,
>> ETH_ADDR_ARGS(flow->dl_src), ETH_ADDR_ARGS(flow->dl_dst),
>> - ntohs(flow->dl_type), flow->nw_proto,
>> + ntohs(flow->dl_type), flow->nw_proto, flow->nw_tos,
>> IP_ARGS(&flow->nw_src), IP_ARGS(&flow->nw_dst),
>> ntohs(flow->tp_src), ntohs(flow->tp_dst));
The feedback just sort of ended here. I'm assuming there wasn't anything else...
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