RDMA/hns: Update the kernel header file of hns

The hns_roce_ib_create_srq_resp is used to interact with the user for
data, this was open coded to use a u32 directly, instead use a properly
sized structure.

Fixes: c7bcb13442e1 ("RDMA/hns: Add SRQ support for hip08 kernel mode")
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/hw/hns/hns_roce_srq.c b/drivers/infiniband/hw/hns/hns_roce_srq.c
index 960b194..12deacf 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_srq.c
+++ b/drivers/infiniband/hw/hns/hns_roce_srq.c
@@ -210,6 +210,7 @@ struct ib_srq *hns_roce_create_srq(struct ib_pd *pd,
                                   struct ib_udata *udata)
 {
        struct hns_roce_dev *hr_dev = to_hr_dev(pd->device);
+       struct hns_roce_ib_create_srq_resp resp = {};
        struct hns_roce_srq *srq;
        int srq_desc_size;
        int srq_buf_size;
@@ -378,16 +379,21 @@ struct ib_srq *hns_roce_create_srq(struct ib_pd *pd,
 
        srq->event = hns_roce_ib_srq_event;
        srq->ibsrq.ext.xrc.srq_num = srq->srqn;
+       resp.srqn = srq->srqn;
 
        if (udata) {
-               if (ib_copy_to_udata(udata, &srq->srqn, sizeof(__u32))) {
+               if (ib_copy_to_udata(udata, &resp,
+                                    min(udata->outlen, sizeof(resp)))) {
                        ret = -EFAULT;
-                       goto err_wrid;
+                       goto err_srqc_alloc;
                }
        }
 
        return &srq->ibsrq;
 
+err_srqc_alloc:
+       hns_roce_srq_free(hr_dev, srq);
+
 err_wrid:
        kvfree(srq->wrid);
 

diff --git a/include/uapi/rdma/hns-abi.h b/include/uapi/rdma/hns-abi.h
index ef3c7ec..eb76b38 100644 (file)
--- a/include/uapi/rdma/hns-abi.h
+++ b/include/uapi/rdma/hns-abi.h
@@ -52,6 +52,11 @@ struct hns_roce_ib_create_srq {
        __aligned_u64 que_addr;
 };
 
+struct hns_roce_ib_create_srq_resp {
+       __u32   srqn;
+       __u32   reserved;
+};
+
 struct hns_roce_ib_create_qp {
        __aligned_u64 buf_addr;
        __aligned_u64 db_addr;