diff options
Diffstat (limited to '')
| -rw-r--r-- | debian/patches/bugfix/arm64/huawei-taishan/0031-RDMA-hns-RDMA-hns-Assign-rq-head-pointer-when-enable.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/debian/patches/bugfix/arm64/huawei-taishan/0031-RDMA-hns-RDMA-hns-Assign-rq-head-pointer-when-enable.patch b/debian/patches/bugfix/arm64/huawei-taishan/0031-RDMA-hns-RDMA-hns-Assign-rq-head-pointer-when-enable.patch new file mode 100644 index 000000000..4f9e5f6be --- /dev/null +++ b/debian/patches/bugfix/arm64/huawei-taishan/0031-RDMA-hns-RDMA-hns-Assign-rq-head-pointer-when-enable.patch @@ -0,0 +1,63 @@ +From 07a7830061e657ce352e690dbe0a794ffb10d22e Mon Sep 17 00:00:00 2001 +From: Lijun Ou <oulijun@huawei.com> +Date: Sat, 12 Jan 2019 18:36:29 +0800 +Subject: [PATCH 31/31] RDMA/hns: RDMA/hns: Assign rq head pointer when enable + rq record db +Origin: https://git.kernel.org/linus/de77503a59403e7045c18c6bb0a10c245a99b648 + +When flush cqe, it needs to get the pointer of rq and sq from db address +space of user and update it into qp context by modified qp. if rq does not +exist, it will not get the value from db address space of user. + +Signed-off-by: Lijun Ou <oulijun@huawei.com> +Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> +--- + drivers/infiniband/hw/hns/hns_roce_qp.c | 19 ++++++++++--------- + 1 file changed, 10 insertions(+), 9 deletions(-) + +Index: linux/drivers/infiniband/hw/hns/hns_roce_qp.c +=================================================================== +--- linux.orig/drivers/infiniband/hw/hns/hns_roce_qp.c ++++ linux/drivers/infiniband/hw/hns/hns_roce_qp.c +@@ -652,6 +652,10 @@ static int hns_roce_create_qp_common(str + dev_err(dev, "rq record doorbell map failed!\n"); + goto err_sq_dbmap; + } ++ ++ /* indicate kernel supports rq record db */ ++ resp.cap_flags |= HNS_ROCE_SUPPORT_RQ_RECORD_DB; ++ hr_qp->rdb_en = 1; + } + } else { + if (init_attr->create_flags & +@@ -760,16 +764,11 @@ static int hns_roce_create_qp_common(str + else + hr_qp->doorbell_qpn = cpu_to_le64(hr_qp->qpn); + +- if (ib_pd->uobject && (udata->outlen >= sizeof(resp)) && +- (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB)) { +- +- /* indicate kernel supports rq record db */ +- resp.cap_flags |= HNS_ROCE_SUPPORT_RQ_RECORD_DB; +- ret = ib_copy_to_udata(udata, &resp, sizeof(resp)); ++ if (udata) { ++ ret = ib_copy_to_udata(udata, &resp, ++ min(udata->outlen, sizeof(resp))); + if (ret) + goto err_qp; +- +- hr_qp->rdb_en = 1; + } + hr_qp->event = hns_roce_ib_qp_event; + +@@ -946,7 +945,9 @@ int hns_roce_modify_qp(struct ib_qp *ibq + (attr_mask & IB_QP_STATE) && new_state == IB_QPS_ERR) { + if (hr_qp->sdb_en == 1) { + hr_qp->sq.head = *(int *)(hr_qp->sdb.virt_addr); +- hr_qp->rq.head = *(int *)(hr_qp->rdb.virt_addr); ++ ++ if (hr_qp->rdb_en == 1) ++ hr_qp->rq.head = *(int *)(hr_qp->rdb.virt_addr); + } else { + dev_warn(dev, "flush cqe is not supported in userspace!\n"); + goto out; |