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SubjectRe: [RFC PATCH rdma-next 03/10] RDMA/rxe: Allow registering FLUSH flags for supported device only
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On 06/01/2022 08:22, Jason Gunthorpe wrote:
> On Tue, Dec 28, 2021 at 04:07:10PM +0800, Li Zhijian wrote:
>> Device should enable IB_DEVICE_RDMA_FLUSH capability if it want to
>> support RDMA FLUSH.
>>
>> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
>> ---
>> include/rdma/ib_verbs.h | 5 +++++
>> 1 file changed, 5 insertions(+)
>>
>> diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
>> index f04d66539879..51d58b641201 100644
>> --- a/include/rdma/ib_verbs.h
>> +++ b/include/rdma/ib_verbs.h
>> @@ -291,6 +291,7 @@ enum ib_device_cap_flags {
>> /* The device supports padding incoming writes to cacheline. */
>> IB_DEVICE_PCI_WRITE_END_PADDING = (1ULL << 36),
>> IB_DEVICE_ALLOW_USER_UNREG = (1ULL << 37),
>> + IB_DEVICE_RDMA_FLUSH = (1ULL << 38),
>> };
>>
>> enum ib_atomic_cap {
>> @@ -4319,6 +4320,10 @@ static inline int ib_check_mr_access(struct ib_device *ib_dev,
>> if (flags & IB_ACCESS_ON_DEMAND &&
>> !(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING))
>> return -EINVAL;
>> +
>> + if (flags & IB_ACCESS_FLUSH &&
>> + !(ib_dev->attrs.device_cap_flags & IB_DEVICE_RDMA_FLUSH))
>> + return -EINVAL;
>> return 0;
>> }
> This needs to be combined with the previous patch
Make sense

Thanks
Zhijian

>
> Jason
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