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RDMA/mlx5: Separate to user/kernel create QP flows

Browse Source 
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.

Link: https://lore.kernel.org/r/20200427154636.381474-29-leon@kernel.org
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Leon Romanovsky 2020-04-27 18:46:28 +03:00 committed by Jason Gunthorpe
parent 04bcc1c2d0
commit 98fc1126c4
1 changed files with 156 additions and 49 deletions
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205
drivers/infiniband/hw/mlx5/qp.c
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@ -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 @@ err_create:
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);