[PATCH 21.11] common/mlx5: fix error CQE handling for 128 bytes CQE

[Kevin Traynor]

On 03/12/2024 19:17, Kevin Traynor wrote:
> On 03/12/2024 19:08, Alexander Kozyrev wrote:
>>> On 03/12/2024 18:43, Kevin Traynor wrote:
>>>> On 27/11/2024 18:48, Alexander Kozyrev wrote:
>>>>> [ upstream commit 3cddeba0ca38b00c7dc646277484d08a4cb2d862 ]
>>>>>
>>>>> The completion queue element size can be independently configured
>>>>> to report either 64 or 128 bytes CQEs by programming cqe_sz parameter
>>>>> at CQ creation. This parameter depends on the cache line size and
>>>>> affects both regular CQEs and error CQEs. But the error handling
>>>>> assumes that an error CQE is 64 bytes and doesn't take the padding
>>>>> into consideration on platforms with 128-byte cache lines.
>>>>> Fix the error CQE size in all error handling routines in mlx5.
>>>>>
>>>> Hi Alexander,
>>>>
>>>> This is causing a build error [1] on windows in the crypto code [2].
>>>>
>>>> ref
>>>> https://dpdkdashboard.iol.unh.edu/results/dashboard/testruns/logs/1475543/
>>>>
>>>> I didn't spend time to analyse. If you have a fix I can apply, or else
>>>> we can drop the patch.
>>>>
>>>> thanks,
>>>> Kevin.
>>>>
>>>> [1]
>>>> ../drivers/crypto/mlx5/mlx5_crypto.c
>>>> ../drivers/crypto/mlx5/mlx5_crypto.c:480:52: error: incomplete
>>>> definition of type 'struct mlx5_err_cqe'
>>>>         DRV_LOG(ERR, "CQE ERR:%x.\n", rte_be_to_cpu_32(cqe->syndrome));
>>>>                                                        ~~~^
>>>> [2]
>>>> mlx5_crypto_cqe_err_handle(struct mlx5_crypto_qp *qp, struct
>>>> rte_crypto_op *op)
>>>> {
>>>>        const uint32_t idx = qp->ci & (qp->entries_n - 1);
>>>>        volatile struct mlx5_err_cqe *cqe = (volatile struct mlx5_err_cqe *)
>>>>                                                        &qp->cq_obj.cqes[idx];
>>>>
>>>>        op->status = RTE_CRYPTO_OP_STATUS_ERROR;
>>>>        qp->stats.dequeue_err_count++;
>>>>        DRV_LOG(ERR, "CQE ERR:%x.\n", rte_be_to_cpu_32(cqe->syndrome));
>>>> }
>>>>
>>>
>>> btw, the code that was run is ahead of the 21.11 branch.
>>>
>>> It is at: https://dpdk.org/git/dpdk-stable on branch 21.11-staging
>>
>> Sorry, somehow missed the crypto driver on 21.11. Attaching the proper patch.
>>
>>
> 
> Thanks for the quick fix! I've pushed to the 21.11-staging branch and
> the ci will be re-run overnight.
> 

CI passed. Thanks for rebasing. Applied and pushed to 21.11 branch.
Kevin.

> thanks,
> Kevin.