Hi,
It is more question to vpp guys (YANG model is almost 1-1 with binary api). Last time I checked behavior was following:
Packet goes to node defined as miss_next if none of table’s session match and next table is not defined.
So, assuming you assign table0 (not table1!) to some interface,
packet will go to next_table (table1) if there is no match in session defined for table0.
Packet will never go to miss_next of table0, because table1 is defined as next in chain.
Packet can go to miss_next of table1 if there is no match for sessions defined for table0 and table1.
Regards,
Marek
From: vpp-dev-bounces@... [mailto:vpp-dev-bounces@...]
On Behalf Of Yang, Yi Y
Sent: 15 lutego 2017 09:17
To: vpp-dev@...
Cc: hc2vpp@...
Subject: [vpp-dev] Anybody knows how vpp classify table chaining works?
Hi, folks
I need to match two flows, ICMP and TCP, by vpp classify tables and sessions, here are my classify tables and classify sessions, I want to know in what case the packet will go to next table and in what case the packet will go to miss_next
in table 0 and table 1, respectively? Thank you in advance.
{
"vpp-classifier-state": {
"classify-table": [
{
"name": "table1",
"classifier-node": "l2-input-classify",
"mask": "00:00:00:00:00:00:00:00:00:00:00:00:ff:ff:00:00:00:00:00:00:00:00:00:ff:00:00:ff:ff:ff:ff:ff:ff:ff:ff:00:00:ff:ff:00:00:00:00:00:00:00:00:00:00",
"active_sessions": 1,
"miss_next": "deny",
"nbuckets": 2,
"classify-session": [
{
"match": "00:00:00:00:00:00:00:00:00:00:00:00:08:00:00:00:00:00:00:00:00:00:00:06:00:00:c0:a8:02:00:c0:a8:02:00:00:00:00:50:00:00:00:00:00:00:00:00:00:00",
"hit_next": "nsh-classifier",
"opaque_index": “47168”,
"advance": 0
}
],
"skip_n_vectors": 0
},
{
"name": "table0",
"next_table": "table1",
"classifier-node": "l2-input-classify",
"mask": "00:00:00:00:00:00:00:00:00:00:00:00:ff:ff:00:00:00:00:00:00:00:00:00:ff:00:00:ff:ff:ff:ff:ff:ff:ff:ff:00:00:00:00:00:00:00:00:00:00:00:00:00:00",
"active_sessions": 1,
"miss_next": "deny",
"nbuckets": 2,
"classify-session": [
{
"match": "00:00:00:00:00:00:00:00:00:00:00:00:08:00:00:00:00:00:00:00:00:00:00:01:00:00:c0:a8:02:00:c0:a8:02:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00",
"hit_next": "nsh-classifier",
"opaque_index": “47168”,
"advance": 0
}
],
"skip_n_vectors": 0
}
]
}
}
