diff options
| author |   Yishai Hadas <yishaih@mellanox.com> | 2018-09-20 21:45:18 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2018-09-27 13:01:33 -0600 |
| commit | 7f72052cb48efb5637ed99d2f45cb33a0bf60719 (patch) | |
| tree | 0365135506a1cdbb7745412448133e1918492681 /drivers | |
| parent | RDMA/core: Acquire and release mmap_sem on page range (diff) | |
| download | linux-dev-7f72052cb48efb5637ed99d2f45cb33a0bf60719.tar.xz linux-dev-7f72052cb48efb5637ed99d2f45cb33a0bf60719.zip | |
IB/mlx5: Expose RAW QP device handles to user space
Expose RAW QP device handles to user space by extending the UHW part of
mlx5_ib_create_qp_resp.
This data is returned only when DEVX context is used where it may be
applicable.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 3455b50705cd..c49a0815a12b 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -1325,7 +1325,9 @@ static int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev, static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, u32 *in, size_t inlen, - struct ib_pd *pd) + struct ib_pd *pd, + struct ib_udata *udata, + struct mlx5_ib_create_qp_resp *resp) { struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp; struct mlx5_ib_sq *sq = &raw_packet_qp->sq; @@ -1335,6 +1337,7 @@ static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, struct mlx5_ib_ucontext *mucontext = to_mucontext(ucontext); int err; u32 tdn = mucontext->tdn; + u16 uid = to_mpd(pd)->uid; if (qp->sq.wqe_cnt) { err = create_raw_packet_qp_tis(dev, qp, sq, tdn, pd); @@ -1345,6 +1348,13 @@ static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, if (err) goto err_destroy_tis; + if (uid) { + resp->tisn = sq->tisn; + resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TISN; + resp->sqn = sq->base.mqp.qpn; + resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_SQN; + } + sq->base.container_mibqp = qp; sq->base.mqp.event = mlx5_ib_qp_event; } @@ -1363,13 +1373,25 @@ static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp, err = create_raw_packet_qp_tir(dev, rq, tdn, &qp->flags_en, pd); if (err) goto err_destroy_rq; + + if (uid) { + resp->rqn = rq->base.mqp.qpn; + resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_RQN; + resp->tirn = rq->tirn; + resp->comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN; + } } qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn : rq->base.mqp.qpn; + err = ib_copy_to_udata(udata, resp, min(udata->outlen, sizeof(*resp))); + if (err) + goto err_destroy_tir; return 0; +err_destroy_tir: + destroy_raw_packet_qp_tir(dev, rq, qp->flags_en, pd); err_destroy_rq: destroy_raw_packet_qp_rq(dev, rq); err_destroy_sq: @@ -1640,12 +1662,23 @@ create_tir: if (err) goto err; + if (mucontext->devx_uid) { + resp.comp_mask |= MLX5_IB_CREATE_QP_RESP_MASK_TIRN; + resp.tirn = qp->rss_qp.tirn; + } + + err = ib_copy_to_udata(udata, &resp, min(udata->outlen, sizeof(resp))); + if (err) + goto err_copy; + kvfree(in); /* qpn is reserved for that QP */ qp->trans_qp.base.mqp.qpn = 0; qp->flags |= MLX5_IB_QP_RSS; return 0; +err_copy: + mlx5_cmd_destroy_tir(dev->mdev, qp->rss_qp.tirn, mucontext->devx_uid); err: kvfree(in); return err; @@ -1978,7 +2011,8 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd, qp->flags & MLX5_IB_QP_UNDERLAY) { qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd.sq_buf_addr; raw_packet_qp_copy_info(qp, &qp->raw_packet_qp); - err = create_raw_packet_qp(dev, qp, in, inlen, pd); + err = create_raw_packet_qp(dev, qp, in, inlen, pd, udata, + &resp); } else { err = mlx5_core_create_qp(dev->mdev, &base->mqp, in, inlen); } |