From: Weihang Li <liweihang@huawei.com>
To: <dledford@redhat.com>, <jgg@ziepe.ca>
Cc: <leon@kernel.org>, <linux-rdma@vger.kernel.org>, <linuxarm@huawei.com>
Subject: [PATCH v2 for-next 1/4] RDMA/hns: Export hardware capability flags to userspace
Date: Thu, 20 Aug 2020 21:17:46 +0800 [thread overview]
Message-ID: <1597929469-22674-2-git-send-email-liweihang@huawei.com> (raw)
In-Reply-To: <1597929469-22674-1-git-send-email-liweihang@huawei.com>
From: Xi Wang <wangxi11@huawei.com>
The libhns in userspace for HIP09 will use the hardware's capability to
enable some features. So export the hardware capablility flags to userspace
by reusing the reserved fields in structure
"hns_roce_ib_alloc_ucontext_resp".
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
drivers/infiniband/hw/hns/hns_roce_main.c | 1 +
include/uapi/rdma/hns-abi.h | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index 5907cfd..98945df 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -313,6 +313,7 @@ static int hns_roce_alloc_ucontext(struct ib_ucontext *uctx,
return -EAGAIN;
resp.qp_tab_size = hr_dev->caps.num_qps;
+ resp.cap_flags = (u32)hr_dev->caps.flags;
ret = hns_roce_uar_alloc(hr_dev, &context->uar);
if (ret)
diff --git a/include/uapi/rdma/hns-abi.h b/include/uapi/rdma/hns-abi.h
index eb76b38..5c38758 100644
--- a/include/uapi/rdma/hns-abi.h
+++ b/include/uapi/rdma/hns-abi.h
@@ -73,7 +73,7 @@ struct hns_roce_ib_create_qp_resp {
struct hns_roce_ib_alloc_ucontext_resp {
__u32 qp_tab_size;
- __u32 reserved;
+ __u32 cap_flags;
};
struct hns_roce_ib_alloc_pd_resp {
--
2.8.1
next prev parent reply other threads:[~2020-08-20 13:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-20 13:17 [PATCH v2 for-next 0/4] RDMA/hns: Extend some capabilities for HIP09 Weihang Li
2020-08-20 13:17 ` Weihang Li [this message]
2020-08-27 12:40 ` [PATCH v2 for-next 1/4] RDMA/hns: Export hardware capability flags to userspace Jason Gunthorpe
2020-08-31 7:46 ` liweihang
2020-08-20 13:17 ` [PATCH v2 for-next 2/4] RDMA/hns: Add support for EQE in size of 64 Bytes Weihang Li
2020-08-20 13:17 ` [PATCH v2 for-next 3/4] RDMA/hns: Add support for CQE " Weihang Li
2020-08-20 13:17 ` [PATCH v2 for-next 4/4] RDMA/hns: Add support for QPC in size of 512 Bytes Weihang Li
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