[PATCH 1/3] compressdev: support for dictionaries and PDCP checksum

[Patrick Robb]

Oh, and I never answered your initial question - yes the traffic generator
issue is now sorted out. Thanks.

On Fri, Sep 26, 2025 at 4:50 PM Patrick Robb <probb at iol.unh.edu> wrote:

> Hi Sameer,
>
> Thanks for your patience and I apologize for not reaching out yesterday.
>
> Normally, if you want a retest you send an email on your patch requesting
> one per the instructions here and it automatically gets picked up by the
> Community Lab CI testing system:
> https://core.dpdk.org/testing/#requesting-a-patch-retest
>
> In this case I will just trigger the retest directly since I'm the
> Community Lab manager. The failure in question should be gone in approx 30
> minutes.
>
> Have a good weekend.
>
> On Fri, Sep 26, 2025 at 12:15 PM Sameer Vaze <svaze at qti.qualcomm.com>
> wrote:
>
>> Hey Patrick,
>>
>> Were you able to fix the issue with the traffic generator? Is there
>> documentation on what steps need to be done to request a rerun?
>>
>> Thanks
>> Sameer Vaze
>> ------------------------------
>> *From:* Patrick Robb <probb at iol.unh.edu>
>> *Sent:* Wednesday, September 24, 2025 2:24 PM
>> *To:* Sameer Vaze <svaze at qti.qualcomm.com>
>> *Cc:* Fan Zhang <fanzhang.oss at gmail.com>; Ashish Gupta <
>> ashishg at marvell.com>; dev at dpdk.org <dev at dpdk.org>
>> *Subject:* Re: [PATCH 1/3] compressdev: support for dictionaries and
>> PDCP checksum
>>
>>
>> *WARNING:* This email originated from outside of Qualcomm. Please be
>> wary of any links or attachments, and do not enable macros.
>> The CI testing failure for this series is due to an issue with
>> the traffic generator that is unrelated to the patch. I will resolve it
>> tomorrow and do a test rerun.
>>
>> On Wed, Sep 24, 2025 at 12:19 PM Sameer Vaze <svaze at qti.qualcomm.com>
>> wrote:
>>
>> Adds definitions for PDCP checksums and apis to pass in
>> dictionaries
>>
>> Signed-off-by: Sameer Vaze <svaze at qti.qualcomm.com>
>> ---
>>  lib/compressdev/rte_comp.h | 31 +++++++++++++++++++++++++++++++
>>  1 file changed, 31 insertions(+)
>>
>> diff --git a/lib/compressdev/rte_comp.h b/lib/compressdev/rte_comp.h
>> index 96d9b276dd..169d3d960e 100644
>> --- a/lib/compressdev/rte_comp.h
>> +++ b/lib/compressdev/rte_comp.h
>> @@ -101,6 +101,10 @@ enum rte_comp_op_status {
>>          * is not an error case. Output data up to op.produced can be
>> used and
>>          * next op in the stream should continue on from op.consumed+1.
>>          */
>> +       RTE_COMP_OP_STATUS_CHECK_SUM_VALIDATION_FAILED,
>> +       /**< Checksum validation failed. Either calculated does checksum
>> not match
>> +        * the one provided or there was an error calculating the checksum
>> +        */
>>  };
>>
>>  /** Compression Algorithms */
>> @@ -166,6 +170,10 @@ enum rte_comp_checksum_type {
>>         /**< Generates a xxHash-32 checksum, as used by LZ4.
>>          * https://github.com/Cyan4973/xxHash/blob/dev/doc/xxhash_spec.md
>>          */
>> +       RTE_COMP_CHECKSUM_3GPP_PDCP_UDC,
>> +       /**< Generates checksum as defined under Uplink Data Compression
>> +        * checksum as defined in the 3GPP PDCP specification
>> +        */
>>  };
>>
>>  /** Compression Huffman Type - used by DEFLATE algorithm */
>> @@ -201,6 +209,11 @@ enum rte_comp_flush_flag {
>>          */
>>  };
>>
>> +#define        DEFLATE_MAX_WINDOW_SIZE (1ULL << 15)
>> +
>> +#define        DEFLATE_MIN_WINDOW_SIZE         (1ULL << 8)
>> +
>> +
>>  /** Compression transform types */
>>  enum rte_comp_xform_type {
>>         RTE_COMP_COMPRESS,
>> @@ -305,6 +318,15 @@ struct rte_comp_compress_xform {
>>         /**< Hash algorithm to be used with compress operation. Hash is
>> always
>>          * done on plaintext.
>>          */
>> +       uint8_t *dictionary;
>> +       /**<
>> +        * Pointer to memory containing dictionary to be used for inflate
>> +        * and deflate operations
>> +        */
>> +       uint16_t dictionary_len;
>> +       /**<
>> +        * Length of dictionary to be used
>> +        */
>>  };
>>
>>  /**
>> @@ -328,6 +350,15 @@ struct rte_comp_decompress_xform {
>>         /**< Hash algorithm to be used with decompress operation. Hash is
>> always
>>          * done on plaintext.
>>          */
>> +       uint8_t *dictionary;
>> +       /**<
>> +        * Pointer to memory containing dictionary to be used for inflate
>> +        * and deflate operations
>> +        */
>> +       uint16_t dictionary_len;
>> +       /**<
>> +        * Length of dictionary to be used
>> +        */
>>  };
>>
>>  /**
>> --
>> 2.31.1
>>
>>
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