Re: [PATCH v2 1/1] RDMA/rxe: Bump up default maximum values used via uverbs

[Shoaib Rao <rao.shoaib@oracle.com>]

Following is a link

https://marc.info/?l=linux-rdma&m=162395437604846&w=2

Or just search for my name in the archive.

Do you see any issues with this value?

Shoaib

On 7/14/21 10:02 PM, Zhu Yanjun wrote:
> On Wed, Jul 14, 2021 at 4:36 PM Rao Shoaib <Rao.Shoaib@oracle.com> wrote:
>> From: Rao Shoaib <rshoaib@ca-dev141.us.oracle.com>
>>
>> In our internal testing we have found that the
>> current maximum are too smalls. Ideally there should
>> be no limits but currently maximum values are reported
>> via ibv_query_device, so we have to keep maximum values
>> but they have been made suffiently large.
>>
>> Resubmitting after fixing an issue reported by test robot.
>>
>> Reported-by: kernel test robot <lkp@intel.com>
>>
>> Signed-off-by: Rao Shoaib <rshoaib@ca-dev141.us.oracle.com>
>> ---
>>   drivers/infiniband/sw/rxe/rxe_param.h | 26 ++++++++++++++------------
>>   1 file changed, 14 insertions(+), 12 deletions(-)
>>
>> diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h
>> index 742e6ec93686..092dbff890f2 100644
>> --- a/drivers/infiniband/sw/rxe/rxe_param.h
>> +++ b/drivers/infiniband/sw/rxe/rxe_param.h
>> @@ -9,6 +9,8 @@
>>
>>   #include <uapi/rdma/rdma_user_rxe.h>
>>
>> +#define DEFAULT_MAX_VALUE (1 << 20)
> Can you let me know the link in which the above value is discussed?
>
> Thanks,
> Zhu Yanjun
>
>> +
>>   static inline enum ib_mtu rxe_mtu_int_to_enum(int mtu)
>>   {
>>          if (mtu < 256)
>> @@ -37,7 +39,7 @@ static inline enum ib_mtu eth_mtu_int_to_enum(int mtu)
>>   enum rxe_device_param {
>>          RXE_MAX_MR_SIZE                 = -1ull,
>>          RXE_PAGE_SIZE_CAP               = 0xfffff000,
>> -       RXE_MAX_QP_WR                   = 0x4000,
>> +       RXE_MAX_QP_WR                   = DEFAULT_MAX_VALUE,
>>          RXE_DEVICE_CAP_FLAGS            = IB_DEVICE_BAD_PKEY_CNTR
>>                                          | IB_DEVICE_BAD_QKEY_CNTR
>>                                          | IB_DEVICE_AUTO_PATH_MIG
>> @@ -58,40 +60,40 @@ enum rxe_device_param {
>>          RXE_MAX_INLINE_DATA             = RXE_MAX_WQE_SIZE -
>>                                            sizeof(struct rxe_send_wqe),
>>          RXE_MAX_SGE_RD                  = 32,
>> -       RXE_MAX_CQ                      = 16384,
>> +       RXE_MAX_CQ                      = DEFAULT_MAX_VALUE,
>>          RXE_MAX_LOG_CQE                 = 15,
>> -       RXE_MAX_PD                      = 0x7ffc,
>> +       RXE_MAX_PD                      = DEFAULT_MAX_VALUE,
>>          RXE_MAX_QP_RD_ATOM              = 128,
>>          RXE_MAX_RES_RD_ATOM             = 0x3f000,
>>          RXE_MAX_QP_INIT_RD_ATOM         = 128,
>>          RXE_MAX_MCAST_GRP               = 8192,
>>          RXE_MAX_MCAST_QP_ATTACH         = 56,
>>          RXE_MAX_TOT_MCAST_QP_ATTACH     = 0x70000,
>> -       RXE_MAX_AH                      = 100,
>> -       RXE_MAX_SRQ_WR                  = 0x4000,
>> +       RXE_MAX_AH                      = DEFAULT_MAX_VALUE,
>> +       RXE_MAX_SRQ_WR                  = DEFAULT_MAX_VALUE,
>>          RXE_MIN_SRQ_WR                  = 1,
>>          RXE_MAX_SRQ_SGE                 = 27,
>>          RXE_MIN_SRQ_SGE                 = 1,
>>          RXE_MAX_FMR_PAGE_LIST_LEN       = 512,
>> -       RXE_MAX_PKEYS                   = 1,
>> +       RXE_MAX_PKEYS                   = 64,
>>          RXE_LOCAL_CA_ACK_DELAY          = 15,
>>
>> -       RXE_MAX_UCONTEXT                = 512,
>> +       RXE_MAX_UCONTEXT                = DEFAULT_MAX_VALUE,
>>
>>          RXE_NUM_PORT                    = 1,
>>
>> -       RXE_MAX_QP                      = 0x10000,
>> +       RXE_MAX_QP                      = DEFAULT_MAX_VALUE,
>>          RXE_MIN_QP_INDEX                = 16,
>> -       RXE_MAX_QP_INDEX                = 0x00020000,
>> +       RXE_MAX_QP_INDEX                = 0x00040000,
>>
>> -       RXE_MAX_SRQ                     = 0x00001000,
>> +       RXE_MAX_SRQ                     = DEFAULT_MAX_VALUE,
>>          RXE_MIN_SRQ_INDEX               = 0x00020001,
>>          RXE_MAX_SRQ_INDEX               = 0x00040000,
>>
>> -       RXE_MAX_MR                      = 0x00001000,
>> +       RXE_MAX_MR                      = DEFAULT_MAX_VALUE,
>>          RXE_MAX_MW                      = 0x00001000,
>>          RXE_MIN_MR_INDEX                = 0x00000001,
>> -       RXE_MAX_MR_INDEX                = 0x00010000,
>> +       RXE_MAX_MR_INDEX                = 0x00040000,
>>          RXE_MIN_MW_INDEX                = 0x00010001,
>>          RXE_MAX_MW_INDEX                = 0x00020000,
>>
>> --
>> 2.27.0
>>