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authorLijun Ou <oulijun@huawei.com>2019-04-23 17:30:26 +0800
committerJason Gunthorpe <jgg@mellanox.com>2019-04-25 10:40:04 -0300
commit2557fabd6e29f349bfa0ac13f38ac98aa5eafc74 (patch)
treed24a5600944458223a3ba2b50a8c2371322a53eb
parent67f269b37f9b4d52c5e7f97acea26c0852e9b8a1 (diff)
downloadlinux-2557fabd6e29f349bfa0ac13f38ac98aa5eafc74.tar.bz2
RDMA/hns: Bugfix for mapping user db
When the maximum send wr delivered by the user is zero, the qp does not have a sq. When allocating the sq db buffer to store the user sq pi pointer and map it to the kernel mode, max_send_wr is used as the trigger condition, while the kernel does not consider the max_send_wr trigger condition when mapmping db. It will cause sq record doorbell map fail and create qp fail. The failed print information as follows: hns3 0000:7d:00.1: Send cmd: tail - 418, opcode - 0x8504, flag - 0x0011, retval - 0x0000 hns3 0000:7d:00.1: Send cmd: 0xe59dc000 0x00000000 0x00000000 0x00000000 0x00000116 0x0000ffff hns3 0000:7d:00.1: sq record doorbell map failed! hns3 0000:7d:00.1: Create RC QP failed Fixes: 0425e3e6e0c7 ("RDMA/hns: Support flush cqe for hip08 in kernel space") Signed-off-by: Lijun Ou <oulijun@huawei.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
-rw-r--r--drivers/infiniband/hw/hns/hns_roce_qp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c
index 66cdf625534f..60cf9f03e941 100644
--- a/drivers/infiniband/hw/hns/hns_roce_qp.c
+++ b/drivers/infiniband/hw/hns/hns_roce_qp.c
@@ -533,7 +533,7 @@ static int hns_roce_set_kernel_sq_size(struct hns_roce_dev *hr_dev,
static int hns_roce_qp_has_sq(struct ib_qp_init_attr *attr)
{
- if (attr->qp_type == IB_QPT_XRC_TGT)
+ if (attr->qp_type == IB_QPT_XRC_TGT || !attr->cap.max_send_wr)
return 0;
return 1;