From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
The kernel and user create QP flows have very little common code,
separate them to simplify the future work of creating per-type
create_*_qp() functions.
Reviewed-by: Maor Gottlieb <maorg@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/qp.c | 205 ++++++++++++++++++++++++--------
1 file changed, 156 insertions(+), 49 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 8890c172f7e5..d5061001217e 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -911,12 +911,12 @@ static int adjust_bfregn(struct mlx5_ib_dev *dev,
bfregn % MLX5_NON_FP_BFREGS_PER_UAR;
}
-static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
- struct mlx5_ib_qp *qp, struct ib_udata *udata,
- struct ib_qp_init_attr *attr, u32 **in,
- struct mlx5_ib_create_qp_resp *resp, int *inlen,
- struct mlx5_ib_qp_base *base,
- struct mlx5_ib_create_qp *ucmd)
+static int _create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
+ struct mlx5_ib_qp *qp, struct ib_udata *udata,
+ struct ib_qp_init_attr *attr, u32 **in,
+ struct mlx5_ib_create_qp_resp *resp, int *inlen,
+ struct mlx5_ib_qp_base *base,
+ struct mlx5_ib_create_qp *ucmd)
{
struct mlx5_ib_ucontext *context;
struct mlx5_ib_ubuffer *ubuffer = &base->ubuffer;
@@ -1083,11 +1083,10 @@ static void *get_sq_edge(struct mlx5_ib_wq *sq, u32 idx)
return fragment_end + MLX5_SEND_WQE_BB;
}
-static int create_kernel_qp(struct mlx5_ib_dev *dev,
- struct ib_qp_init_attr *init_attr,
- struct mlx5_ib_qp *qp,
- u32 **in, int *inlen,
- struct mlx5_ib_qp_base *base)
+static int _create_kernel_qp(struct mlx5_ib_dev *dev,
+ struct ib_qp_init_attr *init_attr,
+ struct mlx5_ib_qp *qp, u32 **in, int *inlen,
+ struct mlx5_ib_qp_base *base)
{
int uar_index;
void *qpc;
@@ -1987,11 +1986,11 @@ static int create_xrc_tgt_qp(struct mlx5_ib_dev *dev,
return 0;
}
-static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
- struct ib_qp_init_attr *init_attr,
- struct mlx5_ib_create_qp *ucmd,
- struct ib_udata *udata, struct mlx5_ib_qp *qp,
- u32 uidx)
+static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
+ struct ib_qp_init_attr *init_attr,
+ struct mlx5_ib_create_qp *ucmd,
+ struct ib_udata *udata, struct mlx5_ib_qp *qp,
+ u32 uidx)
{
struct mlx5_ib_resources *devr = &dev->devr;
int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
@@ -2032,28 +2031,15 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
return err;
}
- if (udata) {
- __u32 max_wqes = 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
+ if (ucmd->rq_wqe_shift != qp->rq.wqe_shift ||
+ ucmd->rq_wqe_count != qp->rq.wqe_cnt)
+ return -EINVAL;
- mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n",
- ucmd->sq_wqe_count);
- if (ucmd->rq_wqe_shift != qp->rq.wqe_shift ||
- ucmd->rq_wqe_count != qp->rq.wqe_cnt) {
- mlx5_ib_dbg(dev, "invalid rq params\n");
- return -EINVAL;
- }
- if (ucmd->sq_wqe_count > max_wqes) {
- mlx5_ib_dbg(
- dev,
- "requested sq_wqe_count (%d) > max allowed (%d)\n",
- ucmd->sq_wqe_count, max_wqes);
- return -EINVAL;
- }
- err = create_user_qp(dev, pd, qp, udata, init_attr, &in, &resp,
- &inlen, base, ucmd);
- } else
- err = create_kernel_qp(dev, init_attr, qp, &in, &inlen, base);
+ if (ucmd->sq_wqe_count > (1 << MLX5_CAP_GEN(mdev, log_max_qp_sz)))
+ return -EINVAL;
+ err = _create_user_qp(dev, pd, qp, udata, init_attr, &in, &resp, &inlen,
+ base, ucmd);
if (err)
return err;
@@ -2064,12 +2050,7 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
MLX5_SET(qpc, qpc, st, mlx5_st);
MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
-
- if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR)
- MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn);
- else
- MLX5_SET(qpc, qpc, latency_sensitive, 1);
-
+ MLX5_SET(qpc, qpc, pd, to_mpd(pd)->pdn);
if (qp->flags_en & MLX5_QP_FLAG_SIGNATURE)
MLX5_SET(qpc, qpc, wq_signature, 1);
@@ -2145,10 +2126,6 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
MLX5_SET(qpc, qpc, user_index, uidx);
- /* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */
- if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO)
- MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
-
if (qp->flags & IB_QP_CREATE_PCI_WRITE_END_PADDING &&
init_attr->qp_type != IB_QPT_RAW_PACKET) {
MLX5_SET(qpc, qpc, end_padding_mode,
@@ -2200,6 +2177,133 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
return err;
}
+static int create_kernel_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
+ struct ib_qp_init_attr *attr, struct mlx5_ib_qp *qp,
+ u32 uidx)
+{
+ struct mlx5_ib_resources *devr = &dev->devr;
+ int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
+ struct mlx5_core_dev *mdev = dev->mdev;
+ struct mlx5_ib_cq *send_cq;
+ struct mlx5_ib_cq *recv_cq;
+ unsigned long flags;
+ struct mlx5_ib_qp_base *base;
+ int mlx5_st;
+ void *qpc;
+ u32 *in;
+ int err;
+
+ mutex_init(&qp->mutex);
+ spin_lock_init(&qp->sq.lock);
+ spin_lock_init(&qp->rq.lock);
+
+ mlx5_st = to_mlx5_st(qp->type);
+ if (mlx5_st < 0)
+ return -EINVAL;
+
+ if (attr->sq_sig_type == IB_SIGNAL_ALL_WR)
+ qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
+
+ base = &qp->trans_qp.base;
+
+ qp->has_rq = qp_has_rq(attr);
+ err = set_rq_size(dev, &attr->cap, qp->has_rq, qp, NULL);
+ if (err) {
+ mlx5_ib_dbg(dev, "err %d\n", err);
+ return err;
+ }
+
+ err = _create_kernel_qp(dev, attr, qp, &in, &inlen, base);
+ if (err)
+ return err;
+
+ if (is_sqp(attr->qp_type))
+ qp->port = attr->port_num;
+
+ qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
+
+ MLX5_SET(qpc, qpc, st, mlx5_st);
+ MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
+
+ if (attr->qp_type != MLX5_IB_QPT_REG_UMR)
+ MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn);
+ else
+ MLX5_SET(qpc, qpc, latency_sensitive, 1);
+
+
+ if (qp->flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK)
+ MLX5_SET(qpc, qpc, block_lb_mc, 1);
+
+ if (qp->rq.wqe_cnt) {
+ MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
+ MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt));
+ }
+
+ MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, attr));
+
+ if (qp->sq.wqe_cnt)
+ MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
+ else
+ MLX5_SET(qpc, qpc, no_sq, 1);
+
+ if (attr->srq) {
+ MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x0)->xrcdn);
+ MLX5_SET(qpc, qpc, srqn_rmpn_xrqn,
+ to_msrq(attr->srq)->msrq.srqn);
+ } else {
+ MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
+ MLX5_SET(qpc, qpc, srqn_rmpn_xrqn,
+ to_msrq(devr->s1)->msrq.srqn);
+ }
+
+ if (attr->send_cq)
+ MLX5_SET(qpc, qpc, cqn_snd, to_mcq(attr->send_cq)->mcq.cqn);
+
+ if (attr->recv_cq)
+ MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(attr->recv_cq)->mcq.cqn);
+
+ MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
+
+ /* 0xffffff means we ask to work with cqe version 0 */
+ if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
+ MLX5_SET(qpc, qpc, user_index, uidx);
+
+ /* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */
+ if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO)
+ MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
+
+ err = mlx5_core_create_qp(dev, &base->mqp, in, inlen);
+ kvfree(in);
+ if (err)
+ goto err_create;
+
+ base->container_mibqp = qp;
+ base->mqp.event = mlx5_ib_qp_event;
+
+ get_cqs(qp->type, attr->send_cq, attr->recv_cq,
+ &send_cq, &recv_cq);
+ spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
+ mlx5_ib_lock_cqs(send_cq, recv_cq);
+ /* Maintain device to QPs access, needed for further handling via reset
+ * flow
+ */
+ list_add_tail(&qp->qps_list, &dev->qp_list);
+ /* Maintain CQ to QPs access, needed for further handling via reset flow
+ */
+ if (send_cq)
+ list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
+ if (recv_cq)
+ list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
+ mlx5_ib_unlock_cqs(send_cq, recv_cq);
+ spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
+
+ return 0;
+
+err_create:
+ destroy_qp_kernel(dev, qp);
+ return err;
+}
+
static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
__acquires(&send_cq->lock) __acquires(&recv_cq->lock)
{
@@ -2695,7 +2799,7 @@ static int create_raw_qp(struct ib_pd *pd, struct mlx5_ib_qp *qp,
if (attr->rwq_ind_tbl)
return create_rss_raw_qp_tir(pd, qp, attr, ucmd, udata);
- return create_qp_common(dev, pd, attr, ucmd, udata, qp, uidx);
+ return create_user_qp(dev, pd, attr, ucmd, udata, qp, uidx);
}
static int check_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
@@ -2819,8 +2923,11 @@ struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
err = create_xrc_tgt_qp(dev, init_attr, qp, udata, uidx);
break;
default:
- err = create_qp_common(dev, pd, init_attr, ucmd, udata, qp,
- uidx);
+ if (udata)
+ err = create_user_qp(dev, pd, init_attr, ucmd, udata,
+ qp, uidx);
+ else
+ err = create_kernel_qp(dev, pd, init_attr, qp, uidx);
}
if (err) {
mlx5_ib_dbg(dev, "create_qp failed %d\n", err);
--
2.25.3
