Where do you point into the session data vector argument when creating it ?
IIRC you need to point to the point *before* the n-skip vectors - i.e. the
argument needs to include the “skipped” data as well.
That is if I you have skip 3 words and match 2, the session data vector to be
passed as a parameter needs to be 5 words.
Back in the time when I noticed it I rationalized it that you might want to
create sessions from the same packet data so recalculating the offer each time
can be a pain.
--a
> On 28 Mar 2019, at 12:08, Michal Cmarada via Lists.Fd.Io
> <mcmarada=cisco....@lists.fd.io> wrote:
>
> Hi VPP devs, Raj,
>
> We had an issue when configuring classify session for classify table, where
> the n_skip_vector value is more than zero. The same issue happens when I am
> creating the configuration over API or via vppctl. The match “k:
> 00000000000000000000000000000000” value is always all zeros in both API and
> vppctl responses. I believe it should be “k:
> 00000000000000000000c0a801020000” that is the match ip of 192.168.1.2.
>
> Can someone check whether there is a bug and the value is not configured at
> all or only the data shown to the user are wrongly interpreted?
>
> I added Raj to copy. He noticed this originally and will try to test the
> configuration on his setup.
>
> Raj: If you have more data available after testing, please provide them here.
> Thanks
>
> API CALLS EXAMPLE:
> ClassifyAddDelTable{isAdd=1, delChain=0, tableIndex=-1, nbuckets=2,
> memorySize=1048576, skipNVectors=12, matchNVectors=1, nextTableIndex=-1,
> missNextIndex=-1, currentDataFlag=0, currentDataOffset=0, maskLen=16,
> mask=[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 0, 0]}
> ClassifyAddDelSession{isAdd=1, tableIndex=0, hitNextIndex=0, opaqueIndex=0,
> advance=0, action=0, metadata=0, matchLen=208, match=[0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, -64, -88, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]}
> ClassifySessionDetailsReplyDump{classifySessionDetails=[ClassifySessionDetails{context=99,
> tableId=0, hitNextIndex=0, advance=0, opaqueIndex=1, matchLength=16,
> match=[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]}]}
>
> sudo vppctl show classify tables verbose
> TableIdx Sessions NextTbl NextNode
> 0 1 -1 -1
> Heap: total: 1.06M, used: 1.27K, free: 1.06M, trimmable: 1.06M
> no traced allocations
>
> nbuckets 2, skip 12 match 1 flag 0 offset 0
> mask 00000000000000000000ffffffff0000
> linear-search buckets 0
>
> [0]: heap offset 1136, elts 2, normal
> 0: [1136]: next_index 0 advance 0 opaque 1 action 0 metadata 0
> k: 00000000000000000000000000000000
> hits 0, last_heard 0.00
>
> 1 active elements
> 1 free lists
> 0 linear-search buckets
>
> VPPCTL EXAMPLE:
> sudo vppctl classify table mask l3 ip4 src skip 12
> sudo vppctl classify session policer-hit-next policy1 exceed-color
> table-index 0 match l3 ip4 src 192.168.1.2
>
> sudo vppctl show classify tables verbose
> TableIdx Sessions NextTbl NextNode
> 0 1 -1 -1
> Heap: total: 2.06M, used: 1.27K, free: 2.06M, trimmable: 2.06M
> no traced allocations
>
> nbuckets 2, skip 12 match 1 flag 0 offset 0
> mask 00000000000000000000ffffffff0000
> linear-search buckets 0
>
> [0]: heap offset 1136, elts 2, normal
> 0: [1136]: next_index 0 advance 0 opaque 1 action 0 metadata 0
> k: 00000000000000000000000000000000
> hits 0, last_heard 0.00
>
> 1 active elements
> 1 free lists
> 0 linear-search buckets
>
>
> Thanks
> Michal
>
> <image001.png>
> Michal Cmarada
> Engineer - Software
> mcmar...@cisco.com
> Tel:
>
>
>
>
> Cisco Systems, Inc.
>
>
>
> Slovakia
> cisco.com
> <image002.gif>
> Think before you print.
> This email may contain confidential and privileged material for the sole use
> of the intended recipient. Any review, use, distribution or disclosure by
> others is strictly prohibited. If you are not the intended recipient (or
> authorized to receive for the recipient), please contact the sender by reply
> email and delete all copies of this message.
> Please click here for Company Registration Information.
>
>
> -=-=-=-=-=-=-=-=-=-=-=-
> Links: You receive all messages sent to this group.
>
> View/Reply Online (#12657): https://lists.fd.io/g/vpp-dev/message/12657
> Mute This Topic: https://lists.fd.io/mt/30810146/675608
> Group Owner: vpp-dev+ow...@lists.fd.io
> Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [ayour...@gmail.com]
> -=-=-=-=-=-=-=-=-=-=-=-
-=-=-=-=-=-=-=-=-=-=-=-
Links: You receive all messages sent to this group.
View/Reply Online (#12658): https://lists.fd.io/g/vpp-dev/message/12658
Mute This Topic: https://lists.fd.io/mt/30810146/21656
Group Owner: vpp-dev+ow...@lists.fd.io
Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
