RDMA/hns: Support SRQ restrack ops for hns driver

[sfrench/cifs-2.6.git] / drivers / infiniband / hw / hns / hns_roce_hw_v2.c

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index d82daff2d9bd5c8b817246617167365cf0d72ea2..b48f2c7b2fb0d102c472f6e436bf72fa8d676b30 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -5272,6 +5272,30 @@ out:
        return ret;
 }
 
+static int hns_roce_v2_query_srqc(struct hns_roce_dev *hr_dev, u32 srqn,
+                                void *buffer)
+{
+       struct hns_roce_srq_context *context;
+       struct hns_roce_cmd_mailbox *mailbox;
+       int ret;
+
+       mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
+       if (IS_ERR(mailbox))
+               return PTR_ERR(mailbox);
+
+       context = mailbox->buf;
+       ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma, HNS_ROCE_CMD_QUERY_SRQC,
+                               srqn);
+       if (ret)
+               goto out;
+
+       memcpy(buffer, context, sizeof(*context));
+
+out:
+       hns_roce_free_cmd_mailbox(hr_dev, mailbox);
+       return ret;
+}
+
 static u8 get_qp_timeout_attr(struct hns_roce_dev *hr_dev,
                              struct hns_roce_v2_qp_context *context)
 {
@@ -6632,6 +6656,7 @@ static const struct hns_roce_hw hns_roce_hw_v2 = {
        .query_cqc = hns_roce_v2_query_cqc,
        .query_qpc = hns_roce_v2_query_qpc,
        .query_mpt = hns_roce_v2_query_mpt,
+       .query_srqc = hns_roce_v2_query_srqc,
        .query_hw_counter = hns_roce_hw_v2_query_counter,
        .hns_roce_dev_ops = &hns_roce_v2_dev_ops,
        .hns_roce_dev_srq_ops = &hns_roce_v2_dev_srq_ops,