diff options
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 10 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 103 | ||||
| -rw-r--r-- | include/uapi/rdma/mlx5-abi.h | 7 |
3 files changed, 118 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index b3f2f5c..6286992 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -206,6 +206,8 @@ struct mlx5_ib_flow_db { * creates the actual hardware QP. */ #define MLX5_IB_QPT_HW_GSI IB_QPT_RESERVED2 +#define MLX5_IB_QPT_DCI IB_QPT_RESERVED3 +#define MLX5_IB_QPT_DCT IB_QPT_RESERVED4 #define MLX5_IB_WR_UMR IB_WR_RESERVED1 #define MLX5_IB_UMR_OCTOWORD 16 @@ -366,12 +368,18 @@ struct mlx5_bf { struct mlx5_sq_bfreg *bfreg; }; +struct mlx5_ib_dct { + struct mlx5_core_dct mdct; + u32 *in; +}; + struct mlx5_ib_qp { struct ib_qp ibqp; union { struct mlx5_ib_qp_trans trans_qp; struct mlx5_ib_raw_packet_qp raw_packet_qp; struct mlx5_ib_rss_qp rss_qp; + struct mlx5_ib_dct dct; }; struct mlx5_buf buf; @@ -410,6 +418,8 @@ struct mlx5_ib_qp { u32 rate_limit; u32 underlay_qpn; bool tunnel_offload_en; + /* storage for qp sub type when core qp type is IB_QPT_DRIVER */ + enum ib_qp_type qp_sub_type; }; struct mlx5_ib_cq_buf { diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 45b9aba..f7f6fe6 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -2115,20 +2115,108 @@ static const char *ib_qp_type_str(enum ib_qp_type type) return "IB_QPT_RAW_PACKET"; case MLX5_IB_QPT_REG_UMR: return "MLX5_IB_QPT_REG_UMR"; + case IB_QPT_DRIVER: + return "IB_QPT_DRIVER"; case IB_QPT_MAX: default: return "Invalid QP type"; } } +static struct ib_qp *mlx5_ib_create_dct(struct ib_pd *pd, + struct ib_qp_init_attr *attr, + struct mlx5_ib_create_qp *ucmd) +{ + struct mlx5_ib_dev *dev; + struct mlx5_ib_qp *qp; + int err = 0; + u32 uidx = MLX5_IB_DEFAULT_UIDX; + void *dctc; + + if (!attr->srq || !attr->recv_cq) + return ERR_PTR(-EINVAL); + + dev = to_mdev(pd->device); + + err = get_qp_user_index(to_mucontext(pd->uobject->context), + ucmd, sizeof(*ucmd), &uidx); + if (err) + return ERR_PTR(err); + + qp = kzalloc(sizeof(*qp), GFP_KERNEL); + if (!qp) + return ERR_PTR(-ENOMEM); + + qp->dct.in = kzalloc(MLX5_ST_SZ_BYTES(create_dct_in), GFP_KERNEL); + if (!qp->dct.in) { + err = -ENOMEM; + goto err_free; + } + + dctc = MLX5_ADDR_OF(create_dct_in, qp->dct.in, dct_context_entry); + qp->driver_qp_type = MLX5_IB_QPT_DCT; + MLX5_SET(dctc, dctc, pd, to_mpd(pd)->pdn); + MLX5_SET(dctc, dctc, srqn_xrqn, to_msrq(attr->srq)->msrq.srqn); + MLX5_SET(dctc, dctc, cqn, to_mcq(attr->recv_cq)->mcq.cqn); + MLX5_SET64(dctc, dctc, dc_access_key, ucmd->access_key); + MLX5_SET(dctc, dctc, user_index, uidx); + + qp->state = IB_QPS_RESET; + + return &qp->ibqp; +err_free: + kfree(qp); + return ERR_PTR(err); +} + +static int set_mlx_qp_type(struct mlx5_ib_dev *dev, + struct ib_qp_init_attr *init_attr, + struct mlx5_ib_create_qp *ucmd, + struct ib_udata *udata) +{ + enum { MLX_QP_FLAGS = MLX5_QP_FLAG_TYPE_DCT | MLX5_QP_FLAG_TYPE_DCI }; + int err; + + if (!udata) + return -EINVAL; + + if (udata->inlen < sizeof(*ucmd)) { + mlx5_ib_dbg(dev, "create_qp user command is smaller than expected\n"); + return -EINVAL; + } + err = ib_copy_from_udata(ucmd, udata, sizeof(*ucmd)); + if (err) + return err; + + if ((ucmd->flags & MLX_QP_FLAGS) == MLX5_QP_FLAG_TYPE_DCI) { + init_attr->qp_type = MLX5_IB_QPT_DCI; + } else { + if ((ucmd->flags & MLX_QP_FLAGS) == MLX5_QP_FLAG_TYPE_DCT) { + init_attr->qp_type = MLX5_IB_QPT_DCT; + } else { + mlx5_ib_dbg(dev, "Invalid QP flags\n"); + return -EINVAL; + } + } + + if (!MLX5_CAP_GEN(dev->mdev, dct)) { + mlx5_ib_dbg(dev, "DC transport is not supported\n"); + return -EOPNOTSUPP; + } + + return 0; +} + struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd, - struct ib_qp_init_attr *init_attr, + struct ib_qp_init_attr *verbs_init_attr, struct ib_udata *udata) { struct mlx5_ib_dev *dev; struct mlx5_ib_qp *qp; u16 xrcdn = 0; int err; + struct ib_qp_init_attr mlx_init_attr; + struct ib_qp_init_attr *init_attr = verbs_init_attr; if (pd) { dev = to_mdev(pd->device); @@ -2153,6 +2241,16 @@ struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd, dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device); } + if (init_attr->qp_type == IB_QPT_DRIVER) { + struct mlx5_ib_create_qp ucmd; + + init_attr = &mlx_init_attr; + memcpy(init_attr, verbs_init_attr, sizeof(*verbs_init_attr)); + err = set_mlx_qp_type(dev, init_attr, &ucmd, udata); + if (err) + return ERR_PTR(err); + } + switch (init_attr->qp_type) { case IB_QPT_XRC_TGT: case IB_QPT_XRC_INI: @@ -2214,6 +2312,9 @@ struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd, return ERR_PTR(-EINVAL); } + if (verbs_init_attr->qp_type == IB_QPT_DRIVER) + qp->qp_sub_type = init_attr->qp_type; + return &qp->ibqp; } diff --git a/include/uapi/rdma/mlx5-abi.h b/include/uapi/rdma/mlx5-abi.h index 0f7e456..83bde975 100644 --- a/include/uapi/rdma/mlx5-abi.h +++ b/include/uapi/rdma/mlx5-abi.h @@ -42,6 +42,8 @@ enum { MLX5_QP_FLAG_SCATTER_CQE = 1 << 1, MLX5_QP_FLAG_TUNNEL_OFFLOADS = 1 << 2, MLX5_QP_FLAG_BFREG_INDEX = 1 << 3, + MLX5_QP_FLAG_TYPE_DCT = 1 << 4, + MLX5_QP_FLAG_TYPE_DCI = 1 << 5, }; enum { @@ -284,7 +286,10 @@ struct mlx5_ib_create_qp { __u32 flags; __u32 uidx; __u32 bfreg_index; - __u64 sq_buf_addr; + union { + __u64 sq_buf_addr; + __u64 access_key; + }; }; /* RX Hash function flags */ |
