Anybody knows how vpp classify table chaining works?
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Marek Gradzki -X (mgradzki - PANTHEON TECHNOLOGIES@Cisco) <mgradzki@...>
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 } ] } } |
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