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3051 lines
85 KiB
3051 lines
85 KiB
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB |
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/* |
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* Copyright (c) 2018, Mellanox Technologies inc. All rights reserved. |
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*/ |
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|
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#include <rdma/ib_user_verbs.h> |
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#include <rdma/ib_verbs.h> |
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#include <rdma/uverbs_types.h> |
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#include <rdma/uverbs_ioctl.h> |
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#include <rdma/mlx5_user_ioctl_cmds.h> |
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#include <rdma/mlx5_user_ioctl_verbs.h> |
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#include <rdma/ib_umem.h> |
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#include <rdma/uverbs_std_types.h> |
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#include <linux/mlx5/driver.h> |
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#include <linux/mlx5/fs.h> |
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#include "mlx5_ib.h" |
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#include "devx.h" |
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#include "qp.h" |
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#include <linux/xarray.h> |
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|
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#define UVERBS_MODULE_NAME mlx5_ib |
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#include <rdma/uverbs_named_ioctl.h> |
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static void dispatch_event_fd(struct list_head *fd_list, const void *data); |
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|
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enum devx_obj_flags { |
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DEVX_OBJ_FLAGS_INDIRECT_MKEY = 1 << 0, |
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DEVX_OBJ_FLAGS_DCT = 1 << 1, |
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DEVX_OBJ_FLAGS_CQ = 1 << 2, |
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}; |
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struct devx_async_data { |
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struct mlx5_ib_dev *mdev; |
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struct list_head list; |
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struct devx_async_cmd_event_file *ev_file; |
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struct mlx5_async_work cb_work; |
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u16 cmd_out_len; |
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/* must be last field in this structure */ |
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struct mlx5_ib_uapi_devx_async_cmd_hdr hdr; |
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}; |
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struct devx_async_event_data { |
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struct list_head list; /* headed in ev_file->event_list */ |
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struct mlx5_ib_uapi_devx_async_event_hdr hdr; |
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}; |
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|
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/* first level XA value data structure */ |
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struct devx_event { |
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struct xarray object_ids; /* second XA level, Key = object id */ |
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struct list_head unaffiliated_list; |
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}; |
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|
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/* second level XA value data structure */ |
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struct devx_obj_event { |
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struct rcu_head rcu; |
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struct list_head obj_sub_list; |
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}; |
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struct devx_event_subscription { |
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struct list_head file_list; /* headed in ev_file-> |
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* subscribed_events_list |
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*/ |
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struct list_head xa_list; /* headed in devx_event->unaffiliated_list or |
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* devx_obj_event->obj_sub_list |
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*/ |
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struct list_head obj_list; /* headed in devx_object */ |
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struct list_head event_list; /* headed in ev_file->event_list or in |
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* temp list via subscription |
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*/ |
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u8 is_cleaned:1; |
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u32 xa_key_level1; |
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u32 xa_key_level2; |
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struct rcu_head rcu; |
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u64 cookie; |
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struct devx_async_event_file *ev_file; |
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struct eventfd_ctx *eventfd; |
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}; |
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struct devx_async_event_file { |
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struct ib_uobject uobj; |
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/* Head of events that are subscribed to this FD */ |
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struct list_head subscribed_events_list; |
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spinlock_t lock; |
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wait_queue_head_t poll_wait; |
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struct list_head event_list; |
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struct mlx5_ib_dev *dev; |
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u8 omit_data:1; |
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u8 is_overflow_err:1; |
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u8 is_destroyed:1; |
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}; |
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struct devx_umem { |
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struct mlx5_core_dev *mdev; |
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struct ib_umem *umem; |
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u32 dinlen; |
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u32 dinbox[MLX5_ST_SZ_DW(destroy_umem_in)]; |
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}; |
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struct devx_umem_reg_cmd { |
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void *in; |
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u32 inlen; |
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u32 out[MLX5_ST_SZ_DW(create_umem_out)]; |
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}; |
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|
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static struct mlx5_ib_ucontext * |
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devx_ufile2uctx(const struct uverbs_attr_bundle *attrs) |
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{ |
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return to_mucontext(ib_uverbs_get_ucontext(attrs)); |
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} |
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int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user) |
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{ |
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u32 in[MLX5_ST_SZ_DW(create_uctx_in)] = {}; |
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u32 out[MLX5_ST_SZ_DW(create_uctx_out)] = {}; |
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void *uctx; |
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int err; |
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u16 uid; |
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u32 cap = 0; |
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/* 0 means not supported */ |
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if (!MLX5_CAP_GEN(dev->mdev, log_max_uctx)) |
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return -EINVAL; |
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uctx = MLX5_ADDR_OF(create_uctx_in, in, uctx); |
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if (is_user && capable(CAP_NET_RAW) && |
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(MLX5_CAP_GEN(dev->mdev, uctx_cap) & MLX5_UCTX_CAP_RAW_TX)) |
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cap |= MLX5_UCTX_CAP_RAW_TX; |
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if (is_user && capable(CAP_SYS_RAWIO) && |
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(MLX5_CAP_GEN(dev->mdev, uctx_cap) & |
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MLX5_UCTX_CAP_INTERNAL_DEV_RES)) |
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cap |= MLX5_UCTX_CAP_INTERNAL_DEV_RES; |
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MLX5_SET(create_uctx_in, in, opcode, MLX5_CMD_OP_CREATE_UCTX); |
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MLX5_SET(uctx, uctx, cap, cap); |
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err = mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out)); |
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if (err) |
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return err; |
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uid = MLX5_GET(create_uctx_out, out, uid); |
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return uid; |
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} |
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void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid) |
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{ |
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u32 in[MLX5_ST_SZ_DW(destroy_uctx_in)] = {}; |
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u32 out[MLX5_ST_SZ_DW(destroy_uctx_out)] = {}; |
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MLX5_SET(destroy_uctx_in, in, opcode, MLX5_CMD_OP_DESTROY_UCTX); |
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MLX5_SET(destroy_uctx_in, in, uid, uid); |
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mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out)); |
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} |
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static bool is_legacy_unaffiliated_event_num(u16 event_num) |
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{ |
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switch (event_num) { |
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case MLX5_EVENT_TYPE_PORT_CHANGE: |
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return true; |
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default: |
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return false; |
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} |
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} |
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static bool is_legacy_obj_event_num(u16 event_num) |
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{ |
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switch (event_num) { |
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case MLX5_EVENT_TYPE_PATH_MIG: |
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case MLX5_EVENT_TYPE_COMM_EST: |
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case MLX5_EVENT_TYPE_SQ_DRAINED: |
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case MLX5_EVENT_TYPE_SRQ_LAST_WQE: |
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case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT: |
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case MLX5_EVENT_TYPE_CQ_ERROR: |
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case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: |
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case MLX5_EVENT_TYPE_PATH_MIG_FAILED: |
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case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: |
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case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: |
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case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR: |
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case MLX5_EVENT_TYPE_DCT_DRAINED: |
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case MLX5_EVENT_TYPE_COMP: |
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case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION: |
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case MLX5_EVENT_TYPE_XRQ_ERROR: |
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return true; |
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default: |
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return false; |
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} |
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} |
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static u16 get_legacy_obj_type(u16 opcode) |
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{ |
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switch (opcode) { |
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case MLX5_CMD_OP_CREATE_RQ: |
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return MLX5_EVENT_QUEUE_TYPE_RQ; |
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case MLX5_CMD_OP_CREATE_QP: |
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return MLX5_EVENT_QUEUE_TYPE_QP; |
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case MLX5_CMD_OP_CREATE_SQ: |
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return MLX5_EVENT_QUEUE_TYPE_SQ; |
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case MLX5_CMD_OP_CREATE_DCT: |
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return MLX5_EVENT_QUEUE_TYPE_DCT; |
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default: |
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return 0; |
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} |
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} |
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static u16 get_dec_obj_type(struct devx_obj *obj, u16 event_num) |
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{ |
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u16 opcode; |
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opcode = (obj->obj_id >> 32) & 0xffff; |
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if (is_legacy_obj_event_num(event_num)) |
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return get_legacy_obj_type(opcode); |
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switch (opcode) { |
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case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: |
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return (obj->obj_id >> 48); |
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case MLX5_CMD_OP_CREATE_RQ: |
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return MLX5_OBJ_TYPE_RQ; |
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case MLX5_CMD_OP_CREATE_QP: |
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return MLX5_OBJ_TYPE_QP; |
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case MLX5_CMD_OP_CREATE_SQ: |
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return MLX5_OBJ_TYPE_SQ; |
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case MLX5_CMD_OP_CREATE_DCT: |
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return MLX5_OBJ_TYPE_DCT; |
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case MLX5_CMD_OP_CREATE_TIR: |
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return MLX5_OBJ_TYPE_TIR; |
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case MLX5_CMD_OP_CREATE_TIS: |
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return MLX5_OBJ_TYPE_TIS; |
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case MLX5_CMD_OP_CREATE_PSV: |
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return MLX5_OBJ_TYPE_PSV; |
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case MLX5_OBJ_TYPE_MKEY: |
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return MLX5_OBJ_TYPE_MKEY; |
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case MLX5_CMD_OP_CREATE_RMP: |
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return MLX5_OBJ_TYPE_RMP; |
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case MLX5_CMD_OP_CREATE_XRC_SRQ: |
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return MLX5_OBJ_TYPE_XRC_SRQ; |
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case MLX5_CMD_OP_CREATE_XRQ: |
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return MLX5_OBJ_TYPE_XRQ; |
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case MLX5_CMD_OP_CREATE_RQT: |
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return MLX5_OBJ_TYPE_RQT; |
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case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: |
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return MLX5_OBJ_TYPE_FLOW_COUNTER; |
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case MLX5_CMD_OP_CREATE_CQ: |
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return MLX5_OBJ_TYPE_CQ; |
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default: |
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return 0; |
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} |
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} |
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static u16 get_event_obj_type(unsigned long event_type, struct mlx5_eqe *eqe) |
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{ |
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switch (event_type) { |
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case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: |
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case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: |
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case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: |
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case MLX5_EVENT_TYPE_SRQ_LAST_WQE: |
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case MLX5_EVENT_TYPE_PATH_MIG: |
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case MLX5_EVENT_TYPE_PATH_MIG_FAILED: |
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case MLX5_EVENT_TYPE_COMM_EST: |
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case MLX5_EVENT_TYPE_SQ_DRAINED: |
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case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT: |
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case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR: |
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return eqe->data.qp_srq.type; |
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case MLX5_EVENT_TYPE_CQ_ERROR: |
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case MLX5_EVENT_TYPE_XRQ_ERROR: |
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return 0; |
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case MLX5_EVENT_TYPE_DCT_DRAINED: |
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case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION: |
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return MLX5_EVENT_QUEUE_TYPE_DCT; |
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default: |
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return MLX5_GET(affiliated_event_header, &eqe->data, obj_type); |
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} |
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} |
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static u32 get_dec_obj_id(u64 obj_id) |
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{ |
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return (obj_id & 0xffffffff); |
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} |
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/* |
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* As the obj_id in the firmware is not globally unique the object type |
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* must be considered upon checking for a valid object id. |
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* For that the opcode of the creator command is encoded as part of the obj_id. |
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*/ |
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static u64 get_enc_obj_id(u32 opcode, u32 obj_id) |
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{ |
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return ((u64)opcode << 32) | obj_id; |
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} |
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static u32 devx_get_created_obj_id(const void *in, const void *out, u16 opcode) |
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{ |
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switch (opcode) { |
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case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: |
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return MLX5_GET(general_obj_out_cmd_hdr, out, obj_id); |
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case MLX5_CMD_OP_CREATE_UMEM: |
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return MLX5_GET(create_umem_out, out, umem_id); |
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case MLX5_CMD_OP_CREATE_MKEY: |
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return MLX5_GET(create_mkey_out, out, mkey_index); |
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case MLX5_CMD_OP_CREATE_CQ: |
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return MLX5_GET(create_cq_out, out, cqn); |
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case MLX5_CMD_OP_ALLOC_PD: |
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return MLX5_GET(alloc_pd_out, out, pd); |
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case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: |
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return MLX5_GET(alloc_transport_domain_out, out, |
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transport_domain); |
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case MLX5_CMD_OP_CREATE_RMP: |
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return MLX5_GET(create_rmp_out, out, rmpn); |
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case MLX5_CMD_OP_CREATE_SQ: |
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return MLX5_GET(create_sq_out, out, sqn); |
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case MLX5_CMD_OP_CREATE_RQ: |
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return MLX5_GET(create_rq_out, out, rqn); |
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case MLX5_CMD_OP_CREATE_RQT: |
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return MLX5_GET(create_rqt_out, out, rqtn); |
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case MLX5_CMD_OP_CREATE_TIR: |
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return MLX5_GET(create_tir_out, out, tirn); |
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case MLX5_CMD_OP_CREATE_TIS: |
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return MLX5_GET(create_tis_out, out, tisn); |
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case MLX5_CMD_OP_ALLOC_Q_COUNTER: |
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return MLX5_GET(alloc_q_counter_out, out, counter_set_id); |
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case MLX5_CMD_OP_CREATE_FLOW_TABLE: |
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return MLX5_GET(create_flow_table_out, out, table_id); |
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case MLX5_CMD_OP_CREATE_FLOW_GROUP: |
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return MLX5_GET(create_flow_group_out, out, group_id); |
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case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: |
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return MLX5_GET(set_fte_in, in, flow_index); |
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case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: |
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return MLX5_GET(alloc_flow_counter_out, out, flow_counter_id); |
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case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT: |
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return MLX5_GET(alloc_packet_reformat_context_out, out, |
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packet_reformat_id); |
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case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT: |
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return MLX5_GET(alloc_modify_header_context_out, out, |
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modify_header_id); |
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case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT: |
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return MLX5_GET(create_scheduling_element_out, out, |
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scheduling_element_id); |
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case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: |
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return MLX5_GET(add_vxlan_udp_dport_in, in, vxlan_udp_port); |
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case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: |
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return MLX5_GET(set_l2_table_entry_in, in, table_index); |
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case MLX5_CMD_OP_CREATE_QP: |
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return MLX5_GET(create_qp_out, out, qpn); |
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case MLX5_CMD_OP_CREATE_SRQ: |
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return MLX5_GET(create_srq_out, out, srqn); |
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case MLX5_CMD_OP_CREATE_XRC_SRQ: |
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return MLX5_GET(create_xrc_srq_out, out, xrc_srqn); |
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case MLX5_CMD_OP_CREATE_DCT: |
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return MLX5_GET(create_dct_out, out, dctn); |
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case MLX5_CMD_OP_CREATE_XRQ: |
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return MLX5_GET(create_xrq_out, out, xrqn); |
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case MLX5_CMD_OP_ATTACH_TO_MCG: |
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return MLX5_GET(attach_to_mcg_in, in, qpn); |
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case MLX5_CMD_OP_ALLOC_XRCD: |
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return MLX5_GET(alloc_xrcd_out, out, xrcd); |
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case MLX5_CMD_OP_CREATE_PSV: |
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return MLX5_GET(create_psv_out, out, psv0_index); |
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default: |
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/* The entry must match to one of the devx_is_obj_create_cmd */ |
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WARN_ON(true); |
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return 0; |
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} |
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} |
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|
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static u64 devx_get_obj_id(const void *in) |
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{ |
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u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); |
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u64 obj_id; |
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|
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switch (opcode) { |
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case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT: |
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case MLX5_CMD_OP_QUERY_GENERAL_OBJECT: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_GENERAL_OBJECT | |
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MLX5_GET(general_obj_in_cmd_hdr, in, |
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obj_type) << 16, |
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MLX5_GET(general_obj_in_cmd_hdr, in, |
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obj_id)); |
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break; |
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case MLX5_CMD_OP_QUERY_MKEY: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_MKEY, |
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MLX5_GET(query_mkey_in, in, |
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mkey_index)); |
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break; |
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case MLX5_CMD_OP_QUERY_CQ: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ, |
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MLX5_GET(query_cq_in, in, cqn)); |
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break; |
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case MLX5_CMD_OP_MODIFY_CQ: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ, |
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MLX5_GET(modify_cq_in, in, cqn)); |
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break; |
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case MLX5_CMD_OP_QUERY_SQ: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ, |
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MLX5_GET(query_sq_in, in, sqn)); |
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break; |
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case MLX5_CMD_OP_MODIFY_SQ: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ, |
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MLX5_GET(modify_sq_in, in, sqn)); |
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break; |
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case MLX5_CMD_OP_QUERY_RQ: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, |
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MLX5_GET(query_rq_in, in, rqn)); |
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break; |
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case MLX5_CMD_OP_MODIFY_RQ: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, |
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MLX5_GET(modify_rq_in, in, rqn)); |
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break; |
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case MLX5_CMD_OP_QUERY_RMP: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RMP, |
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MLX5_GET(query_rmp_in, in, rmpn)); |
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break; |
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case MLX5_CMD_OP_MODIFY_RMP: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RMP, |
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MLX5_GET(modify_rmp_in, in, rmpn)); |
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break; |
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case MLX5_CMD_OP_QUERY_RQT: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT, |
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MLX5_GET(query_rqt_in, in, rqtn)); |
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break; |
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case MLX5_CMD_OP_MODIFY_RQT: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT, |
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MLX5_GET(modify_rqt_in, in, rqtn)); |
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break; |
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case MLX5_CMD_OP_QUERY_TIR: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR, |
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MLX5_GET(query_tir_in, in, tirn)); |
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break; |
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case MLX5_CMD_OP_MODIFY_TIR: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR, |
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MLX5_GET(modify_tir_in, in, tirn)); |
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break; |
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case MLX5_CMD_OP_QUERY_TIS: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS, |
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MLX5_GET(query_tis_in, in, tisn)); |
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break; |
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case MLX5_CMD_OP_MODIFY_TIS: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS, |
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MLX5_GET(modify_tis_in, in, tisn)); |
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break; |
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case MLX5_CMD_OP_QUERY_FLOW_TABLE: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_TABLE, |
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MLX5_GET(query_flow_table_in, in, |
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table_id)); |
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break; |
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case MLX5_CMD_OP_MODIFY_FLOW_TABLE: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_TABLE, |
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MLX5_GET(modify_flow_table_in, in, |
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table_id)); |
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break; |
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case MLX5_CMD_OP_QUERY_FLOW_GROUP: |
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obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_GROUP, |
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MLX5_GET(query_flow_group_in, in, |
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group_id)); |
|
break; |
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case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY, |
|
MLX5_GET(query_fte_in, in, |
|
flow_index)); |
|
break; |
|
case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY, |
|
MLX5_GET(set_fte_in, in, flow_index)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_Q_COUNTER: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_Q_COUNTER, |
|
MLX5_GET(query_q_counter_in, in, |
|
counter_set_id)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_FLOW_COUNTER: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_FLOW_COUNTER, |
|
MLX5_GET(query_flow_counter_in, in, |
|
flow_counter_id)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT, |
|
MLX5_GET(query_modify_header_context_in, |
|
in, modify_header_id)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT, |
|
MLX5_GET(query_scheduling_element_in, |
|
in, scheduling_element_id)); |
|
break; |
|
case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT, |
|
MLX5_GET(modify_scheduling_element_in, |
|
in, scheduling_element_id)); |
|
break; |
|
case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT, |
|
MLX5_GET(add_vxlan_udp_dport_in, in, |
|
vxlan_udp_port)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_L2_TABLE_ENTRY, |
|
MLX5_GET(query_l2_table_entry_in, in, |
|
table_index)); |
|
break; |
|
case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_L2_TABLE_ENTRY, |
|
MLX5_GET(set_l2_table_entry_in, in, |
|
table_index)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_QP: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, |
|
MLX5_GET(query_qp_in, in, qpn)); |
|
break; |
|
case MLX5_CMD_OP_RST2INIT_QP: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, |
|
MLX5_GET(rst2init_qp_in, in, qpn)); |
|
break; |
|
case MLX5_CMD_OP_INIT2INIT_QP: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, |
|
MLX5_GET(init2init_qp_in, in, qpn)); |
|
break; |
|
case MLX5_CMD_OP_INIT2RTR_QP: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, |
|
MLX5_GET(init2rtr_qp_in, in, qpn)); |
|
break; |
|
case MLX5_CMD_OP_RTR2RTS_QP: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, |
|
MLX5_GET(rtr2rts_qp_in, in, qpn)); |
|
break; |
|
case MLX5_CMD_OP_RTS2RTS_QP: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, |
|
MLX5_GET(rts2rts_qp_in, in, qpn)); |
|
break; |
|
case MLX5_CMD_OP_SQERR2RTS_QP: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, |
|
MLX5_GET(sqerr2rts_qp_in, in, qpn)); |
|
break; |
|
case MLX5_CMD_OP_2ERR_QP: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, |
|
MLX5_GET(qp_2err_in, in, qpn)); |
|
break; |
|
case MLX5_CMD_OP_2RST_QP: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, |
|
MLX5_GET(qp_2rst_in, in, qpn)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_DCT: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT, |
|
MLX5_GET(query_dct_in, in, dctn)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_XRQ: |
|
case MLX5_CMD_OP_QUERY_XRQ_DC_PARAMS_ENTRY: |
|
case MLX5_CMD_OP_QUERY_XRQ_ERROR_PARAMS: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRQ, |
|
MLX5_GET(query_xrq_in, in, xrqn)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_XRC_SRQ: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRC_SRQ, |
|
MLX5_GET(query_xrc_srq_in, in, |
|
xrc_srqn)); |
|
break; |
|
case MLX5_CMD_OP_ARM_XRC_SRQ: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRC_SRQ, |
|
MLX5_GET(arm_xrc_srq_in, in, xrc_srqn)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_SRQ: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SRQ, |
|
MLX5_GET(query_srq_in, in, srqn)); |
|
break; |
|
case MLX5_CMD_OP_ARM_RQ: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, |
|
MLX5_GET(arm_rq_in, in, srq_number)); |
|
break; |
|
case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT, |
|
MLX5_GET(drain_dct_in, in, dctn)); |
|
break; |
|
case MLX5_CMD_OP_ARM_XRQ: |
|
case MLX5_CMD_OP_SET_XRQ_DC_PARAMS_ENTRY: |
|
case MLX5_CMD_OP_RELEASE_XRQ_ERROR: |
|
case MLX5_CMD_OP_MODIFY_XRQ: |
|
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRQ, |
|
MLX5_GET(arm_xrq_in, in, xrqn)); |
|
break; |
|
case MLX5_CMD_OP_QUERY_PACKET_REFORMAT_CONTEXT: |
|
obj_id = get_enc_obj_id |
|
(MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT, |
|
MLX5_GET(query_packet_reformat_context_in, |
|
in, packet_reformat_id)); |
|
break; |
|
default: |
|
obj_id = 0; |
|
} |
|
|
|
return obj_id; |
|
} |
|
|
|
static bool devx_is_valid_obj_id(struct uverbs_attr_bundle *attrs, |
|
struct ib_uobject *uobj, const void *in) |
|
{ |
|
struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata); |
|
u64 obj_id = devx_get_obj_id(in); |
|
|
|
if (!obj_id) |
|
return false; |
|
|
|
switch (uobj_get_object_id(uobj)) { |
|
case UVERBS_OBJECT_CQ: |
|
return get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ, |
|
to_mcq(uobj->object)->mcq.cqn) == |
|
obj_id; |
|
|
|
case UVERBS_OBJECT_SRQ: |
|
{ |
|
struct mlx5_core_srq *srq = &(to_msrq(uobj->object)->msrq); |
|
u16 opcode; |
|
|
|
switch (srq->common.res) { |
|
case MLX5_RES_XSRQ: |
|
opcode = MLX5_CMD_OP_CREATE_XRC_SRQ; |
|
break; |
|
case MLX5_RES_XRQ: |
|
opcode = MLX5_CMD_OP_CREATE_XRQ; |
|
break; |
|
default: |
|
if (!dev->mdev->issi) |
|
opcode = MLX5_CMD_OP_CREATE_SRQ; |
|
else |
|
opcode = MLX5_CMD_OP_CREATE_RMP; |
|
} |
|
|
|
return get_enc_obj_id(opcode, |
|
to_msrq(uobj->object)->msrq.srqn) == |
|
obj_id; |
|
} |
|
|
|
case UVERBS_OBJECT_QP: |
|
{ |
|
struct mlx5_ib_qp *qp = to_mqp(uobj->object); |
|
|
|
if (qp->type == IB_QPT_RAW_PACKET || |
|
(qp->flags & IB_QP_CREATE_SOURCE_QPN)) { |
|
struct mlx5_ib_raw_packet_qp *raw_packet_qp = |
|
&qp->raw_packet_qp; |
|
struct mlx5_ib_rq *rq = &raw_packet_qp->rq; |
|
struct mlx5_ib_sq *sq = &raw_packet_qp->sq; |
|
|
|
return (get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, |
|
rq->base.mqp.qpn) == obj_id || |
|
get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ, |
|
sq->base.mqp.qpn) == obj_id || |
|
get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR, |
|
rq->tirn) == obj_id || |
|
get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS, |
|
sq->tisn) == obj_id); |
|
} |
|
|
|
if (qp->type == MLX5_IB_QPT_DCT) |
|
return get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT, |
|
qp->dct.mdct.mqp.qpn) == obj_id; |
|
return get_enc_obj_id(MLX5_CMD_OP_CREATE_QP, |
|
qp->ibqp.qp_num) == obj_id; |
|
} |
|
|
|
case UVERBS_OBJECT_WQ: |
|
return get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ, |
|
to_mrwq(uobj->object)->core_qp.qpn) == |
|
obj_id; |
|
|
|
case UVERBS_OBJECT_RWQ_IND_TBL: |
|
return get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT, |
|
to_mrwq_ind_table(uobj->object)->rqtn) == |
|
obj_id; |
|
|
|
case MLX5_IB_OBJECT_DEVX_OBJ: |
|
return ((struct devx_obj *)uobj->object)->obj_id == obj_id; |
|
|
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
static void devx_set_umem_valid(const void *in) |
|
{ |
|
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); |
|
|
|
switch (opcode) { |
|
case MLX5_CMD_OP_CREATE_MKEY: |
|
MLX5_SET(create_mkey_in, in, mkey_umem_valid, 1); |
|
break; |
|
case MLX5_CMD_OP_CREATE_CQ: |
|
{ |
|
void *cqc; |
|
|
|
MLX5_SET(create_cq_in, in, cq_umem_valid, 1); |
|
cqc = MLX5_ADDR_OF(create_cq_in, in, cq_context); |
|
MLX5_SET(cqc, cqc, dbr_umem_valid, 1); |
|
break; |
|
} |
|
case MLX5_CMD_OP_CREATE_QP: |
|
{ |
|
void *qpc; |
|
|
|
qpc = MLX5_ADDR_OF(create_qp_in, in, qpc); |
|
MLX5_SET(qpc, qpc, dbr_umem_valid, 1); |
|
MLX5_SET(create_qp_in, in, wq_umem_valid, 1); |
|
break; |
|
} |
|
|
|
case MLX5_CMD_OP_CREATE_RQ: |
|
{ |
|
void *rqc, *wq; |
|
|
|
rqc = MLX5_ADDR_OF(create_rq_in, in, ctx); |
|
wq = MLX5_ADDR_OF(rqc, rqc, wq); |
|
MLX5_SET(wq, wq, dbr_umem_valid, 1); |
|
MLX5_SET(wq, wq, wq_umem_valid, 1); |
|
break; |
|
} |
|
|
|
case MLX5_CMD_OP_CREATE_SQ: |
|
{ |
|
void *sqc, *wq; |
|
|
|
sqc = MLX5_ADDR_OF(create_sq_in, in, ctx); |
|
wq = MLX5_ADDR_OF(sqc, sqc, wq); |
|
MLX5_SET(wq, wq, dbr_umem_valid, 1); |
|
MLX5_SET(wq, wq, wq_umem_valid, 1); |
|
break; |
|
} |
|
|
|
case MLX5_CMD_OP_MODIFY_CQ: |
|
MLX5_SET(modify_cq_in, in, cq_umem_valid, 1); |
|
break; |
|
|
|
case MLX5_CMD_OP_CREATE_RMP: |
|
{ |
|
void *rmpc, *wq; |
|
|
|
rmpc = MLX5_ADDR_OF(create_rmp_in, in, ctx); |
|
wq = MLX5_ADDR_OF(rmpc, rmpc, wq); |
|
MLX5_SET(wq, wq, dbr_umem_valid, 1); |
|
MLX5_SET(wq, wq, wq_umem_valid, 1); |
|
break; |
|
} |
|
|
|
case MLX5_CMD_OP_CREATE_XRQ: |
|
{ |
|
void *xrqc, *wq; |
|
|
|
xrqc = MLX5_ADDR_OF(create_xrq_in, in, xrq_context); |
|
wq = MLX5_ADDR_OF(xrqc, xrqc, wq); |
|
MLX5_SET(wq, wq, dbr_umem_valid, 1); |
|
MLX5_SET(wq, wq, wq_umem_valid, 1); |
|
break; |
|
} |
|
|
|
case MLX5_CMD_OP_CREATE_XRC_SRQ: |
|
{ |
|
void *xrc_srqc; |
|
|
|
MLX5_SET(create_xrc_srq_in, in, xrc_srq_umem_valid, 1); |
|
xrc_srqc = MLX5_ADDR_OF(create_xrc_srq_in, in, |
|
xrc_srq_context_entry); |
|
MLX5_SET(xrc_srqc, xrc_srqc, dbr_umem_valid, 1); |
|
break; |
|
} |
|
|
|
default: |
|
return; |
|
} |
|
} |
|
|
|
static bool devx_is_obj_create_cmd(const void *in, u16 *opcode) |
|
{ |
|
*opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); |
|
|
|
switch (*opcode) { |
|
case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: |
|
case MLX5_CMD_OP_CREATE_MKEY: |
|
case MLX5_CMD_OP_CREATE_CQ: |
|
case MLX5_CMD_OP_ALLOC_PD: |
|
case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: |
|
case MLX5_CMD_OP_CREATE_RMP: |
|
case MLX5_CMD_OP_CREATE_SQ: |
|
case MLX5_CMD_OP_CREATE_RQ: |
|
case MLX5_CMD_OP_CREATE_RQT: |
|
case MLX5_CMD_OP_CREATE_TIR: |
|
case MLX5_CMD_OP_CREATE_TIS: |
|
case MLX5_CMD_OP_ALLOC_Q_COUNTER: |
|
case MLX5_CMD_OP_CREATE_FLOW_TABLE: |
|
case MLX5_CMD_OP_CREATE_FLOW_GROUP: |
|
case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: |
|
case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT: |
|
case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT: |
|
case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT: |
|
case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: |
|
case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: |
|
case MLX5_CMD_OP_CREATE_QP: |
|
case MLX5_CMD_OP_CREATE_SRQ: |
|
case MLX5_CMD_OP_CREATE_XRC_SRQ: |
|
case MLX5_CMD_OP_CREATE_DCT: |
|
case MLX5_CMD_OP_CREATE_XRQ: |
|
case MLX5_CMD_OP_ATTACH_TO_MCG: |
|
case MLX5_CMD_OP_ALLOC_XRCD: |
|
return true; |
|
case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: |
|
{ |
|
u16 op_mod = MLX5_GET(set_fte_in, in, op_mod); |
|
if (op_mod == 0) |
|
return true; |
|
return false; |
|
} |
|
case MLX5_CMD_OP_CREATE_PSV: |
|
{ |
|
u8 num_psv = MLX5_GET(create_psv_in, in, num_psv); |
|
|
|
if (num_psv == 1) |
|
return true; |
|
return false; |
|
} |
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
static bool devx_is_obj_modify_cmd(const void *in) |
|
{ |
|
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); |
|
|
|
switch (opcode) { |
|
case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT: |
|
case MLX5_CMD_OP_MODIFY_CQ: |
|
case MLX5_CMD_OP_MODIFY_RMP: |
|
case MLX5_CMD_OP_MODIFY_SQ: |
|
case MLX5_CMD_OP_MODIFY_RQ: |
|
case MLX5_CMD_OP_MODIFY_RQT: |
|
case MLX5_CMD_OP_MODIFY_TIR: |
|
case MLX5_CMD_OP_MODIFY_TIS: |
|
case MLX5_CMD_OP_MODIFY_FLOW_TABLE: |
|
case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT: |
|
case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: |
|
case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: |
|
case MLX5_CMD_OP_RST2INIT_QP: |
|
case MLX5_CMD_OP_INIT2RTR_QP: |
|
case MLX5_CMD_OP_INIT2INIT_QP: |
|
case MLX5_CMD_OP_RTR2RTS_QP: |
|
case MLX5_CMD_OP_RTS2RTS_QP: |
|
case MLX5_CMD_OP_SQERR2RTS_QP: |
|
case MLX5_CMD_OP_2ERR_QP: |
|
case MLX5_CMD_OP_2RST_QP: |
|
case MLX5_CMD_OP_ARM_XRC_SRQ: |
|
case MLX5_CMD_OP_ARM_RQ: |
|
case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION: |
|
case MLX5_CMD_OP_ARM_XRQ: |
|
case MLX5_CMD_OP_SET_XRQ_DC_PARAMS_ENTRY: |
|
case MLX5_CMD_OP_RELEASE_XRQ_ERROR: |
|
case MLX5_CMD_OP_MODIFY_XRQ: |
|
return true; |
|
case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: |
|
{ |
|
u16 op_mod = MLX5_GET(set_fte_in, in, op_mod); |
|
|
|
if (op_mod == 1) |
|
return true; |
|
return false; |
|
} |
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
static bool devx_is_obj_query_cmd(const void *in) |
|
{ |
|
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); |
|
|
|
switch (opcode) { |
|
case MLX5_CMD_OP_QUERY_GENERAL_OBJECT: |
|
case MLX5_CMD_OP_QUERY_MKEY: |
|
case MLX5_CMD_OP_QUERY_CQ: |
|
case MLX5_CMD_OP_QUERY_RMP: |
|
case MLX5_CMD_OP_QUERY_SQ: |
|
case MLX5_CMD_OP_QUERY_RQ: |
|
case MLX5_CMD_OP_QUERY_RQT: |
|
case MLX5_CMD_OP_QUERY_TIR: |
|
case MLX5_CMD_OP_QUERY_TIS: |
|
case MLX5_CMD_OP_QUERY_Q_COUNTER: |
|
case MLX5_CMD_OP_QUERY_FLOW_TABLE: |
|
case MLX5_CMD_OP_QUERY_FLOW_GROUP: |
|
case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY: |
|
case MLX5_CMD_OP_QUERY_FLOW_COUNTER: |
|
case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT: |
|
case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT: |
|
case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY: |
|
case MLX5_CMD_OP_QUERY_QP: |
|
case MLX5_CMD_OP_QUERY_SRQ: |
|
case MLX5_CMD_OP_QUERY_XRC_SRQ: |
|
case MLX5_CMD_OP_QUERY_DCT: |
|
case MLX5_CMD_OP_QUERY_XRQ: |
|
case MLX5_CMD_OP_QUERY_XRQ_DC_PARAMS_ENTRY: |
|
case MLX5_CMD_OP_QUERY_XRQ_ERROR_PARAMS: |
|
case MLX5_CMD_OP_QUERY_PACKET_REFORMAT_CONTEXT: |
|
return true; |
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
static bool devx_is_whitelist_cmd(void *in) |
|
{ |
|
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); |
|
|
|
switch (opcode) { |
|
case MLX5_CMD_OP_QUERY_HCA_CAP: |
|
case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT: |
|
case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT: |
|
return true; |
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
static int devx_get_uid(struct mlx5_ib_ucontext *c, void *cmd_in) |
|
{ |
|
if (devx_is_whitelist_cmd(cmd_in)) { |
|
struct mlx5_ib_dev *dev; |
|
|
|
if (c->devx_uid) |
|
return c->devx_uid; |
|
|
|
dev = to_mdev(c->ibucontext.device); |
|
if (dev->devx_whitelist_uid) |
|
return dev->devx_whitelist_uid; |
|
|
|
return -EOPNOTSUPP; |
|
} |
|
|
|
if (!c->devx_uid) |
|
return -EINVAL; |
|
|
|
return c->devx_uid; |
|
} |
|
|
|
static bool devx_is_general_cmd(void *in, struct mlx5_ib_dev *dev) |
|
{ |
|
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); |
|
|
|
/* Pass all cmds for vhca_tunnel as general, tracking is done in FW */ |
|
if ((MLX5_CAP_GEN_64(dev->mdev, vhca_tunnel_commands) && |
|
MLX5_GET(general_obj_in_cmd_hdr, in, vhca_tunnel_id)) || |
|
(opcode >= MLX5_CMD_OP_GENERAL_START && |
|
opcode < MLX5_CMD_OP_GENERAL_END)) |
|
return true; |
|
|
|
switch (opcode) { |
|
case MLX5_CMD_OP_QUERY_HCA_CAP: |
|
case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT: |
|
case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT: |
|
case MLX5_CMD_OP_QUERY_VPORT_STATE: |
|
case MLX5_CMD_OP_QUERY_ADAPTER: |
|
case MLX5_CMD_OP_QUERY_ISSI: |
|
case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT: |
|
case MLX5_CMD_OP_QUERY_ROCE_ADDRESS: |
|
case MLX5_CMD_OP_QUERY_VNIC_ENV: |
|
case MLX5_CMD_OP_QUERY_VPORT_COUNTER: |
|
case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG: |
|
case MLX5_CMD_OP_NOP: |
|
case MLX5_CMD_OP_QUERY_CONG_STATUS: |
|
case MLX5_CMD_OP_QUERY_CONG_PARAMS: |
|
case MLX5_CMD_OP_QUERY_CONG_STATISTICS: |
|
case MLX5_CMD_OP_QUERY_LAG: |
|
return true; |
|
default: |
|
return false; |
|
} |
|
} |
|
|
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_EQN)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
struct mlx5_ib_ucontext *c; |
|
struct mlx5_ib_dev *dev; |
|
int user_vector; |
|
int dev_eqn; |
|
unsigned int irqn; |
|
int err; |
|
|
|
if (uverbs_copy_from(&user_vector, attrs, |
|
MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC)) |
|
return -EFAULT; |
|
|
|
c = devx_ufile2uctx(attrs); |
|
if (IS_ERR(c)) |
|
return PTR_ERR(c); |
|
dev = to_mdev(c->ibucontext.device); |
|
|
|
err = mlx5_vector2eqn(dev->mdev, user_vector, &dev_eqn, &irqn); |
|
if (err < 0) |
|
return err; |
|
|
|
if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN, |
|
&dev_eqn, sizeof(dev_eqn))) |
|
return -EFAULT; |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
*Security note: |
|
* The hardware protection mechanism works like this: Each device object that |
|
* is subject to UAR doorbells (QP/SQ/CQ) gets a UAR ID (called uar_page in |
|
* the device specification manual) upon its creation. Then upon doorbell, |
|
* hardware fetches the object context for which the doorbell was rang, and |
|
* validates that the UAR through which the DB was rang matches the UAR ID |
|
* of the object. |
|
* If no match the doorbell is silently ignored by the hardware. Of course, |
|
* the user cannot ring a doorbell on a UAR that was not mapped to it. |
|
* Now in devx, as the devx kernel does not manipulate the QP/SQ/CQ command |
|
* mailboxes (except tagging them with UID), we expose to the user its UAR |
|
* ID, so it can embed it in these objects in the expected specification |
|
* format. So the only thing the user can do is hurt itself by creating a |
|
* QP/SQ/CQ with a UAR ID other than his, and then in this case other users |
|
* may ring a doorbell on its objects. |
|
* The consequence of that will be that another user can schedule a QP/SQ |
|
* of the buggy user for execution (just insert it to the hardware schedule |
|
* queue or arm its CQ for event generation), no further harm is expected. |
|
*/ |
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_UAR)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
struct mlx5_ib_ucontext *c; |
|
struct mlx5_ib_dev *dev; |
|
u32 user_idx; |
|
s32 dev_idx; |
|
|
|
c = devx_ufile2uctx(attrs); |
|
if (IS_ERR(c)) |
|
return PTR_ERR(c); |
|
dev = to_mdev(c->ibucontext.device); |
|
|
|
if (uverbs_copy_from(&user_idx, attrs, |
|
MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX)) |
|
return -EFAULT; |
|
|
|
dev_idx = bfregn_to_uar_index(dev, &c->bfregi, user_idx, true); |
|
if (dev_idx < 0) |
|
return dev_idx; |
|
|
|
if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX, |
|
&dev_idx, sizeof(dev_idx))) |
|
return -EFAULT; |
|
|
|
return 0; |
|
} |
|
|
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OTHER)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
struct mlx5_ib_ucontext *c; |
|
struct mlx5_ib_dev *dev; |
|
void *cmd_in = uverbs_attr_get_alloced_ptr( |
|
attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN); |
|
int cmd_out_len = uverbs_attr_get_len(attrs, |
|
MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT); |
|
void *cmd_out; |
|
int err; |
|
int uid; |
|
|
|
c = devx_ufile2uctx(attrs); |
|
if (IS_ERR(c)) |
|
return PTR_ERR(c); |
|
dev = to_mdev(c->ibucontext.device); |
|
|
|
uid = devx_get_uid(c, cmd_in); |
|
if (uid < 0) |
|
return uid; |
|
|
|
/* Only white list of some general HCA commands are allowed for this method. */ |
|
if (!devx_is_general_cmd(cmd_in, dev)) |
|
return -EINVAL; |
|
|
|
cmd_out = uverbs_zalloc(attrs, cmd_out_len); |
|
if (IS_ERR(cmd_out)) |
|
return PTR_ERR(cmd_out); |
|
|
|
MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); |
|
err = mlx5_cmd_exec(dev->mdev, cmd_in, |
|
uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN), |
|
cmd_out, cmd_out_len); |
|
if (err) |
|
return err; |
|
|
|
return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, cmd_out, |
|
cmd_out_len); |
|
} |
|
|
|
static void devx_obj_build_destroy_cmd(void *in, void *out, void *din, |
|
u32 *dinlen, |
|
u32 *obj_id) |
|
{ |
|
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode); |
|
u16 uid = MLX5_GET(general_obj_in_cmd_hdr, in, uid); |
|
|
|
*obj_id = devx_get_created_obj_id(in, out, opcode); |
|
*dinlen = MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr); |
|
MLX5_SET(general_obj_in_cmd_hdr, din, uid, uid); |
|
|
|
switch (opcode) { |
|
case MLX5_CMD_OP_CREATE_GENERAL_OBJECT: |
|
MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT); |
|
MLX5_SET(general_obj_in_cmd_hdr, din, obj_id, *obj_id); |
|
MLX5_SET(general_obj_in_cmd_hdr, din, obj_type, |
|
MLX5_GET(general_obj_in_cmd_hdr, in, obj_type)); |
|
break; |
|
|
|
case MLX5_CMD_OP_CREATE_UMEM: |
|
MLX5_SET(destroy_umem_in, din, opcode, |
|
MLX5_CMD_OP_DESTROY_UMEM); |
|
MLX5_SET(destroy_umem_in, din, umem_id, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_MKEY: |
|
MLX5_SET(destroy_mkey_in, din, opcode, |
|
MLX5_CMD_OP_DESTROY_MKEY); |
|
MLX5_SET(destroy_mkey_in, din, mkey_index, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_CQ: |
|
MLX5_SET(destroy_cq_in, din, opcode, MLX5_CMD_OP_DESTROY_CQ); |
|
MLX5_SET(destroy_cq_in, din, cqn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_ALLOC_PD: |
|
MLX5_SET(dealloc_pd_in, din, opcode, MLX5_CMD_OP_DEALLOC_PD); |
|
MLX5_SET(dealloc_pd_in, din, pd, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: |
|
MLX5_SET(dealloc_transport_domain_in, din, opcode, |
|
MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN); |
|
MLX5_SET(dealloc_transport_domain_in, din, transport_domain, |
|
*obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_RMP: |
|
MLX5_SET(destroy_rmp_in, din, opcode, MLX5_CMD_OP_DESTROY_RMP); |
|
MLX5_SET(destroy_rmp_in, din, rmpn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_SQ: |
|
MLX5_SET(destroy_sq_in, din, opcode, MLX5_CMD_OP_DESTROY_SQ); |
|
MLX5_SET(destroy_sq_in, din, sqn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_RQ: |
|
MLX5_SET(destroy_rq_in, din, opcode, MLX5_CMD_OP_DESTROY_RQ); |
|
MLX5_SET(destroy_rq_in, din, rqn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_RQT: |
|
MLX5_SET(destroy_rqt_in, din, opcode, MLX5_CMD_OP_DESTROY_RQT); |
|
MLX5_SET(destroy_rqt_in, din, rqtn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_TIR: |
|
MLX5_SET(destroy_tir_in, din, opcode, MLX5_CMD_OP_DESTROY_TIR); |
|
MLX5_SET(destroy_tir_in, din, tirn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_TIS: |
|
MLX5_SET(destroy_tis_in, din, opcode, MLX5_CMD_OP_DESTROY_TIS); |
|
MLX5_SET(destroy_tis_in, din, tisn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_ALLOC_Q_COUNTER: |
|
MLX5_SET(dealloc_q_counter_in, din, opcode, |
|
MLX5_CMD_OP_DEALLOC_Q_COUNTER); |
|
MLX5_SET(dealloc_q_counter_in, din, counter_set_id, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_FLOW_TABLE: |
|
*dinlen = MLX5_ST_SZ_BYTES(destroy_flow_table_in); |
|
MLX5_SET(destroy_flow_table_in, din, other_vport, |
|
MLX5_GET(create_flow_table_in, in, other_vport)); |
|
MLX5_SET(destroy_flow_table_in, din, vport_number, |
|
MLX5_GET(create_flow_table_in, in, vport_number)); |
|
MLX5_SET(destroy_flow_table_in, din, table_type, |
|
MLX5_GET(create_flow_table_in, in, table_type)); |
|
MLX5_SET(destroy_flow_table_in, din, table_id, *obj_id); |
|
MLX5_SET(destroy_flow_table_in, din, opcode, |
|
MLX5_CMD_OP_DESTROY_FLOW_TABLE); |
|
break; |
|
case MLX5_CMD_OP_CREATE_FLOW_GROUP: |
|
*dinlen = MLX5_ST_SZ_BYTES(destroy_flow_group_in); |
|
MLX5_SET(destroy_flow_group_in, din, other_vport, |
|
MLX5_GET(create_flow_group_in, in, other_vport)); |
|
MLX5_SET(destroy_flow_group_in, din, vport_number, |
|
MLX5_GET(create_flow_group_in, in, vport_number)); |
|
MLX5_SET(destroy_flow_group_in, din, table_type, |
|
MLX5_GET(create_flow_group_in, in, table_type)); |
|
MLX5_SET(destroy_flow_group_in, din, table_id, |
|
MLX5_GET(create_flow_group_in, in, table_id)); |
|
MLX5_SET(destroy_flow_group_in, din, group_id, *obj_id); |
|
MLX5_SET(destroy_flow_group_in, din, opcode, |
|
MLX5_CMD_OP_DESTROY_FLOW_GROUP); |
|
break; |
|
case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: |
|
*dinlen = MLX5_ST_SZ_BYTES(delete_fte_in); |
|
MLX5_SET(delete_fte_in, din, other_vport, |
|
MLX5_GET(set_fte_in, in, other_vport)); |
|
MLX5_SET(delete_fte_in, din, vport_number, |
|
MLX5_GET(set_fte_in, in, vport_number)); |
|
MLX5_SET(delete_fte_in, din, table_type, |
|
MLX5_GET(set_fte_in, in, table_type)); |
|
MLX5_SET(delete_fte_in, din, table_id, |
|
MLX5_GET(set_fte_in, in, table_id)); |
|
MLX5_SET(delete_fte_in, din, flow_index, *obj_id); |
|
MLX5_SET(delete_fte_in, din, opcode, |
|
MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY); |
|
break; |
|
case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: |
|
MLX5_SET(dealloc_flow_counter_in, din, opcode, |
|
MLX5_CMD_OP_DEALLOC_FLOW_COUNTER); |
|
MLX5_SET(dealloc_flow_counter_in, din, flow_counter_id, |
|
*obj_id); |
|
break; |
|
case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT: |
|
MLX5_SET(dealloc_packet_reformat_context_in, din, opcode, |
|
MLX5_CMD_OP_DEALLOC_PACKET_REFORMAT_CONTEXT); |
|
MLX5_SET(dealloc_packet_reformat_context_in, din, |
|
packet_reformat_id, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT: |
|
MLX5_SET(dealloc_modify_header_context_in, din, opcode, |
|
MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT); |
|
MLX5_SET(dealloc_modify_header_context_in, din, |
|
modify_header_id, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT: |
|
*dinlen = MLX5_ST_SZ_BYTES(destroy_scheduling_element_in); |
|
MLX5_SET(destroy_scheduling_element_in, din, |
|
scheduling_hierarchy, |
|
MLX5_GET(create_scheduling_element_in, in, |
|
scheduling_hierarchy)); |
|
MLX5_SET(destroy_scheduling_element_in, din, |
|
scheduling_element_id, *obj_id); |
|
MLX5_SET(destroy_scheduling_element_in, din, opcode, |
|
MLX5_CMD_OP_DESTROY_SCHEDULING_ELEMENT); |
|
break; |
|
case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: |
|
*dinlen = MLX5_ST_SZ_BYTES(delete_vxlan_udp_dport_in); |
|
MLX5_SET(delete_vxlan_udp_dport_in, din, vxlan_udp_port, *obj_id); |
|
MLX5_SET(delete_vxlan_udp_dport_in, din, opcode, |
|
MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT); |
|
break; |
|
case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: |
|
*dinlen = MLX5_ST_SZ_BYTES(delete_l2_table_entry_in); |
|
MLX5_SET(delete_l2_table_entry_in, din, table_index, *obj_id); |
|
MLX5_SET(delete_l2_table_entry_in, din, opcode, |
|
MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY); |
|
break; |
|
case MLX5_CMD_OP_CREATE_QP: |
|
MLX5_SET(destroy_qp_in, din, opcode, MLX5_CMD_OP_DESTROY_QP); |
|
MLX5_SET(destroy_qp_in, din, qpn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_SRQ: |
|
MLX5_SET(destroy_srq_in, din, opcode, MLX5_CMD_OP_DESTROY_SRQ); |
|
MLX5_SET(destroy_srq_in, din, srqn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_XRC_SRQ: |
|
MLX5_SET(destroy_xrc_srq_in, din, opcode, |
|
MLX5_CMD_OP_DESTROY_XRC_SRQ); |
|
MLX5_SET(destroy_xrc_srq_in, din, xrc_srqn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_DCT: |
|
MLX5_SET(destroy_dct_in, din, opcode, MLX5_CMD_OP_DESTROY_DCT); |
|
MLX5_SET(destroy_dct_in, din, dctn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_XRQ: |
|
MLX5_SET(destroy_xrq_in, din, opcode, MLX5_CMD_OP_DESTROY_XRQ); |
|
MLX5_SET(destroy_xrq_in, din, xrqn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_ATTACH_TO_MCG: |
|
*dinlen = MLX5_ST_SZ_BYTES(detach_from_mcg_in); |
|
MLX5_SET(detach_from_mcg_in, din, qpn, |
|
MLX5_GET(attach_to_mcg_in, in, qpn)); |
|
memcpy(MLX5_ADDR_OF(detach_from_mcg_in, din, multicast_gid), |
|
MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid), |
|
MLX5_FLD_SZ_BYTES(attach_to_mcg_in, multicast_gid)); |
|
MLX5_SET(detach_from_mcg_in, din, opcode, |
|
MLX5_CMD_OP_DETACH_FROM_MCG); |
|
MLX5_SET(detach_from_mcg_in, din, qpn, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_ALLOC_XRCD: |
|
MLX5_SET(dealloc_xrcd_in, din, opcode, |
|
MLX5_CMD_OP_DEALLOC_XRCD); |
|
MLX5_SET(dealloc_xrcd_in, din, xrcd, *obj_id); |
|
break; |
|
case MLX5_CMD_OP_CREATE_PSV: |
|
MLX5_SET(destroy_psv_in, din, opcode, |
|
MLX5_CMD_OP_DESTROY_PSV); |
|
MLX5_SET(destroy_psv_in, din, psvn, *obj_id); |
|
break; |
|
default: |
|
/* The entry must match to one of the devx_is_obj_create_cmd */ |
|
WARN_ON(true); |
|
break; |
|
} |
|
} |
|
|
|
static int devx_handle_mkey_indirect(struct devx_obj *obj, |
|
struct mlx5_ib_dev *dev, |
|
void *in, void *out) |
|
{ |
|
struct mlx5_ib_devx_mr *devx_mr = &obj->devx_mr; |
|
struct mlx5_core_mkey *mkey; |
|
void *mkc; |
|
u8 key; |
|
|
|
mkey = &devx_mr->mmkey; |
|
mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); |
|
key = MLX5_GET(mkc, mkc, mkey_7_0); |
|
mkey->key = mlx5_idx_to_mkey( |
|
MLX5_GET(create_mkey_out, out, mkey_index)) | key; |
|
mkey->type = MLX5_MKEY_INDIRECT_DEVX; |
|
mkey->iova = MLX5_GET64(mkc, mkc, start_addr); |
|
mkey->size = MLX5_GET64(mkc, mkc, len); |
|
mkey->pd = MLX5_GET(mkc, mkc, pd); |
|
devx_mr->ndescs = MLX5_GET(mkc, mkc, translations_octword_size); |
|
init_waitqueue_head(&mkey->wait); |
|
|
|
return mlx5r_store_odp_mkey(dev, mkey); |
|
} |
|
|
|
static int devx_handle_mkey_create(struct mlx5_ib_dev *dev, |
|
struct devx_obj *obj, |
|
void *in, int in_len) |
|
{ |
|
int min_len = MLX5_BYTE_OFF(create_mkey_in, memory_key_mkey_entry) + |
|
MLX5_FLD_SZ_BYTES(create_mkey_in, |
|
memory_key_mkey_entry); |
|
void *mkc; |
|
u8 access_mode; |
|
|
|
if (in_len < min_len) |
|
return -EINVAL; |
|
|
|
mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry); |
|
|
|
access_mode = MLX5_GET(mkc, mkc, access_mode_1_0); |
|
access_mode |= MLX5_GET(mkc, mkc, access_mode_4_2) << 2; |
|
|
|
if (access_mode == MLX5_MKC_ACCESS_MODE_KLMS || |
|
access_mode == MLX5_MKC_ACCESS_MODE_KSM) { |
|
if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING)) |
|
obj->flags |= DEVX_OBJ_FLAGS_INDIRECT_MKEY; |
|
return 0; |
|
} |
|
|
|
MLX5_SET(create_mkey_in, in, mkey_umem_valid, 1); |
|
return 0; |
|
} |
|
|
|
static void devx_cleanup_subscription(struct mlx5_ib_dev *dev, |
|
struct devx_event_subscription *sub) |
|
{ |
|
struct devx_event *event; |
|
struct devx_obj_event *xa_val_level2; |
|
|
|
if (sub->is_cleaned) |
|
return; |
|
|
|
sub->is_cleaned = 1; |
|
list_del_rcu(&sub->xa_list); |
|
|
|
if (list_empty(&sub->obj_list)) |
|
return; |
|
|
|
list_del_rcu(&sub->obj_list); |
|
/* check whether key level 1 for this obj_sub_list is empty */ |
|
event = xa_load(&dev->devx_event_table.event_xa, |
|
sub->xa_key_level1); |
|
WARN_ON(!event); |
|
|
|
xa_val_level2 = xa_load(&event->object_ids, sub->xa_key_level2); |
|
if (list_empty(&xa_val_level2->obj_sub_list)) { |
|
xa_erase(&event->object_ids, |
|
sub->xa_key_level2); |
|
kfree_rcu(xa_val_level2, rcu); |
|
} |
|
} |
|
|
|
static int devx_obj_cleanup(struct ib_uobject *uobject, |
|
enum rdma_remove_reason why, |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; |
|
struct mlx5_devx_event_table *devx_event_table; |
|
struct devx_obj *obj = uobject->object; |
|
struct devx_event_subscription *sub_entry, *tmp; |
|
struct mlx5_ib_dev *dev; |
|
int ret; |
|
|
|
dev = mlx5_udata_to_mdev(&attrs->driver_udata); |
|
if (obj->flags & DEVX_OBJ_FLAGS_INDIRECT_MKEY && |
|
xa_erase(&obj->ib_dev->odp_mkeys, |
|
mlx5_base_mkey(obj->devx_mr.mmkey.key))) |
|
/* |
|
* The pagefault_single_data_segment() does commands against |
|
* the mmkey, we must wait for that to stop before freeing the |
|
* mkey, as another allocation could get the same mkey #. |
|
*/ |
|
mlx5r_deref_wait_odp_mkey(&obj->devx_mr.mmkey); |
|
|
|
if (obj->flags & DEVX_OBJ_FLAGS_DCT) |
|
ret = mlx5_core_destroy_dct(obj->ib_dev, &obj->core_dct); |
|
else if (obj->flags & DEVX_OBJ_FLAGS_CQ) |
|
ret = mlx5_core_destroy_cq(obj->ib_dev->mdev, &obj->core_cq); |
|
else |
|
ret = mlx5_cmd_exec(obj->ib_dev->mdev, obj->dinbox, |
|
obj->dinlen, out, sizeof(out)); |
|
if (ret) |
|
return ret; |
|
|
|
devx_event_table = &dev->devx_event_table; |
|
|
|
mutex_lock(&devx_event_table->event_xa_lock); |
|
list_for_each_entry_safe(sub_entry, tmp, &obj->event_sub, obj_list) |
|
devx_cleanup_subscription(dev, sub_entry); |
|
mutex_unlock(&devx_event_table->event_xa_lock); |
|
|
|
kfree(obj); |
|
return ret; |
|
} |
|
|
|
static void devx_cq_comp(struct mlx5_core_cq *mcq, struct mlx5_eqe *eqe) |
|
{ |
|
struct devx_obj *obj = container_of(mcq, struct devx_obj, core_cq); |
|
struct mlx5_devx_event_table *table; |
|
struct devx_event *event; |
|
struct devx_obj_event *obj_event; |
|
u32 obj_id = mcq->cqn; |
|
|
|
table = &obj->ib_dev->devx_event_table; |
|
rcu_read_lock(); |
|
event = xa_load(&table->event_xa, MLX5_EVENT_TYPE_COMP); |
|
if (!event) |
|
goto out; |
|
|
|
obj_event = xa_load(&event->object_ids, obj_id); |
|
if (!obj_event) |
|
goto out; |
|
|
|
dispatch_event_fd(&obj_event->obj_sub_list, eqe); |
|
out: |
|
rcu_read_unlock(); |
|
} |
|
|
|
static bool is_apu_thread_cq(struct mlx5_ib_dev *dev, const void *in) |
|
{ |
|
if (!MLX5_CAP_GEN(dev->mdev, apu) || |
|
!MLX5_GET(cqc, MLX5_ADDR_OF(create_cq_in, in, cq_context), |
|
apu_thread_cq)) |
|
return false; |
|
|
|
return true; |
|
} |
|
|
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN); |
|
int cmd_out_len = uverbs_attr_get_len(attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT); |
|
int cmd_in_len = uverbs_attr_get_len(attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN); |
|
void *cmd_out; |
|
struct ib_uobject *uobj = uverbs_attr_get_uobject( |
|
attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE); |
|
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( |
|
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); |
|
struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); |
|
u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; |
|
struct devx_obj *obj; |
|
u16 obj_type = 0; |
|
int err; |
|
int uid; |
|
u32 obj_id; |
|
u16 opcode; |
|
|
|
if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) |
|
return -EINVAL; |
|
|
|
uid = devx_get_uid(c, cmd_in); |
|
if (uid < 0) |
|
return uid; |
|
|
|
if (!devx_is_obj_create_cmd(cmd_in, &opcode)) |
|
return -EINVAL; |
|
|
|
cmd_out = uverbs_zalloc(attrs, cmd_out_len); |
|
if (IS_ERR(cmd_out)) |
|
return PTR_ERR(cmd_out); |
|
|
|
obj = kzalloc(sizeof(struct devx_obj), GFP_KERNEL); |
|
if (!obj) |
|
return -ENOMEM; |
|
|
|
MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); |
|
if (opcode == MLX5_CMD_OP_CREATE_MKEY) { |
|
err = devx_handle_mkey_create(dev, obj, cmd_in, cmd_in_len); |
|
if (err) |
|
goto obj_free; |
|
} else { |
|
devx_set_umem_valid(cmd_in); |
|
} |
|
|
|
if (opcode == MLX5_CMD_OP_CREATE_DCT) { |
|
obj->flags |= DEVX_OBJ_FLAGS_DCT; |
|
err = mlx5_core_create_dct(dev, &obj->core_dct, cmd_in, |
|
cmd_in_len, cmd_out, cmd_out_len); |
|
} else if (opcode == MLX5_CMD_OP_CREATE_CQ && |
|
!is_apu_thread_cq(dev, cmd_in)) { |
|
obj->flags |= DEVX_OBJ_FLAGS_CQ; |
|
obj->core_cq.comp = devx_cq_comp; |
|
err = mlx5_core_create_cq(dev->mdev, &obj->core_cq, |
|
cmd_in, cmd_in_len, cmd_out, |
|
cmd_out_len); |
|
} else { |
|
err = mlx5_cmd_exec(dev->mdev, cmd_in, |
|
cmd_in_len, |
|
cmd_out, cmd_out_len); |
|
} |
|
|
|
if (err) |
|
goto obj_free; |
|
|
|
if (opcode == MLX5_CMD_OP_ALLOC_FLOW_COUNTER) { |
|
u8 bulk = MLX5_GET(alloc_flow_counter_in, |
|
cmd_in, |
|
flow_counter_bulk); |
|
obj->flow_counter_bulk_size = 128UL * bulk; |
|
} |
|
|
|
uobj->object = obj; |
|
INIT_LIST_HEAD(&obj->event_sub); |
|
obj->ib_dev = dev; |
|
devx_obj_build_destroy_cmd(cmd_in, cmd_out, obj->dinbox, &obj->dinlen, |
|
&obj_id); |
|
WARN_ON(obj->dinlen > MLX5_MAX_DESTROY_INBOX_SIZE_DW * sizeof(u32)); |
|
|
|
err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, cmd_out, cmd_out_len); |
|
if (err) |
|
goto obj_destroy; |
|
|
|
if (opcode == MLX5_CMD_OP_CREATE_GENERAL_OBJECT) |
|
obj_type = MLX5_GET(general_obj_in_cmd_hdr, cmd_in, obj_type); |
|
obj->obj_id = get_enc_obj_id(opcode | obj_type << 16, obj_id); |
|
|
|
if (obj->flags & DEVX_OBJ_FLAGS_INDIRECT_MKEY) { |
|
err = devx_handle_mkey_indirect(obj, dev, cmd_in, cmd_out); |
|
if (err) |
|
goto obj_destroy; |
|
} |
|
return 0; |
|
|
|
obj_destroy: |
|
if (obj->flags & DEVX_OBJ_FLAGS_DCT) |
|
mlx5_core_destroy_dct(obj->ib_dev, &obj->core_dct); |
|
else if (obj->flags & DEVX_OBJ_FLAGS_CQ) |
|
mlx5_core_destroy_cq(obj->ib_dev->mdev, &obj->core_cq); |
|
else |
|
mlx5_cmd_exec(obj->ib_dev->mdev, obj->dinbox, obj->dinlen, out, |
|
sizeof(out)); |
|
obj_free: |
|
kfree(obj); |
|
return err; |
|
} |
|
|
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_MODIFY)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN); |
|
int cmd_out_len = uverbs_attr_get_len(attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT); |
|
struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE); |
|
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( |
|
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); |
|
struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device); |
|
void *cmd_out; |
|
int err; |
|
int uid; |
|
|
|
if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) |
|
return -EINVAL; |
|
|
|
uid = devx_get_uid(c, cmd_in); |
|
if (uid < 0) |
|
return uid; |
|
|
|
if (!devx_is_obj_modify_cmd(cmd_in)) |
|
return -EINVAL; |
|
|
|
if (!devx_is_valid_obj_id(attrs, uobj, cmd_in)) |
|
return -EINVAL; |
|
|
|
cmd_out = uverbs_zalloc(attrs, cmd_out_len); |
|
if (IS_ERR(cmd_out)) |
|
return PTR_ERR(cmd_out); |
|
|
|
MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); |
|
devx_set_umem_valid(cmd_in); |
|
|
|
err = mlx5_cmd_exec(mdev->mdev, cmd_in, |
|
uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN), |
|
cmd_out, cmd_out_len); |
|
if (err) |
|
return err; |
|
|
|
return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT, |
|
cmd_out, cmd_out_len); |
|
} |
|
|
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_QUERY)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN); |
|
int cmd_out_len = uverbs_attr_get_len(attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT); |
|
struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE); |
|
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( |
|
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); |
|
void *cmd_out; |
|
int err; |
|
int uid; |
|
struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device); |
|
|
|
if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) |
|
return -EINVAL; |
|
|
|
uid = devx_get_uid(c, cmd_in); |
|
if (uid < 0) |
|
return uid; |
|
|
|
if (!devx_is_obj_query_cmd(cmd_in)) |
|
return -EINVAL; |
|
|
|
if (!devx_is_valid_obj_id(attrs, uobj, cmd_in)) |
|
return -EINVAL; |
|
|
|
cmd_out = uverbs_zalloc(attrs, cmd_out_len); |
|
if (IS_ERR(cmd_out)) |
|
return PTR_ERR(cmd_out); |
|
|
|
MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); |
|
err = mlx5_cmd_exec(mdev->mdev, cmd_in, |
|
uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN), |
|
cmd_out, cmd_out_len); |
|
if (err) |
|
return err; |
|
|
|
return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT, |
|
cmd_out, cmd_out_len); |
|
} |
|
|
|
struct devx_async_event_queue { |
|
spinlock_t lock; |
|
wait_queue_head_t poll_wait; |
|
struct list_head event_list; |
|
atomic_t bytes_in_use; |
|
u8 is_destroyed:1; |
|
}; |
|
|
|
struct devx_async_cmd_event_file { |
|
struct ib_uobject uobj; |
|
struct devx_async_event_queue ev_queue; |
|
struct mlx5_async_ctx async_ctx; |
|
}; |
|
|
|
static void devx_init_event_queue(struct devx_async_event_queue *ev_queue) |
|
{ |
|
spin_lock_init(&ev_queue->lock); |
|
INIT_LIST_HEAD(&ev_queue->event_list); |
|
init_waitqueue_head(&ev_queue->poll_wait); |
|
atomic_set(&ev_queue->bytes_in_use, 0); |
|
ev_queue->is_destroyed = 0; |
|
} |
|
|
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
struct devx_async_cmd_event_file *ev_file; |
|
|
|
struct ib_uobject *uobj = uverbs_attr_get_uobject( |
|
attrs, MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE); |
|
struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata); |
|
|
|
ev_file = container_of(uobj, struct devx_async_cmd_event_file, |
|
uobj); |
|
devx_init_event_queue(&ev_file->ev_queue); |
|
mlx5_cmd_init_async_ctx(mdev->mdev, &ev_file->async_ctx); |
|
return 0; |
|
} |
|
|
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
struct ib_uobject *uobj = uverbs_attr_get_uobject( |
|
attrs, MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE); |
|
struct devx_async_event_file *ev_file; |
|
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( |
|
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); |
|
struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); |
|
u32 flags; |
|
int err; |
|
|
|
err = uverbs_get_flags32(&flags, attrs, |
|
MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS, |
|
MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA); |
|
|
|
if (err) |
|
return err; |
|
|
|
ev_file = container_of(uobj, struct devx_async_event_file, |
|
uobj); |
|
spin_lock_init(&ev_file->lock); |
|
INIT_LIST_HEAD(&ev_file->event_list); |
|
init_waitqueue_head(&ev_file->poll_wait); |
|
if (flags & MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA) |
|
ev_file->omit_data = 1; |
|
INIT_LIST_HEAD(&ev_file->subscribed_events_list); |
|
ev_file->dev = dev; |
|
get_device(&dev->ib_dev.dev); |
|
return 0; |
|
} |
|
|
|
static void devx_query_callback(int status, struct mlx5_async_work *context) |
|
{ |
|
struct devx_async_data *async_data = |
|
container_of(context, struct devx_async_data, cb_work); |
|
struct devx_async_cmd_event_file *ev_file = async_data->ev_file; |
|
struct devx_async_event_queue *ev_queue = &ev_file->ev_queue; |
|
unsigned long flags; |
|
|
|
/* |
|
* Note that if the struct devx_async_cmd_event_file uobj begins to be |
|
* destroyed it will block at mlx5_cmd_cleanup_async_ctx() until this |
|
* routine returns, ensuring that it always remains valid here. |
|
*/ |
|
spin_lock_irqsave(&ev_queue->lock, flags); |
|
list_add_tail(&async_data->list, &ev_queue->event_list); |
|
spin_unlock_irqrestore(&ev_queue->lock, flags); |
|
|
|
wake_up_interruptible(&ev_queue->poll_wait); |
|
} |
|
|
|
#define MAX_ASYNC_BYTES_IN_USE (1024 * 1024) /* 1MB */ |
|
|
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_CMD_IN); |
|
struct ib_uobject *uobj = uverbs_attr_get_uobject( |
|
attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_HANDLE); |
|
u16 cmd_out_len; |
|
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( |
|
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); |
|
struct ib_uobject *fd_uobj; |
|
int err; |
|
int uid; |
|
struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device); |
|
struct devx_async_cmd_event_file *ev_file; |
|
struct devx_async_data *async_data; |
|
|
|
if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id)) |
|
return -EINVAL; |
|
|
|
uid = devx_get_uid(c, cmd_in); |
|
if (uid < 0) |
|
return uid; |
|
|
|
if (!devx_is_obj_query_cmd(cmd_in)) |
|
return -EINVAL; |
|
|
|
err = uverbs_get_const(&cmd_out_len, attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN); |
|
if (err) |
|
return err; |
|
|
|
if (!devx_is_valid_obj_id(attrs, uobj, cmd_in)) |
|
return -EINVAL; |
|
|
|
fd_uobj = uverbs_attr_get_uobject(attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_FD); |
|
if (IS_ERR(fd_uobj)) |
|
return PTR_ERR(fd_uobj); |
|
|
|
ev_file = container_of(fd_uobj, struct devx_async_cmd_event_file, |
|
uobj); |
|
|
|
if (atomic_add_return(cmd_out_len, &ev_file->ev_queue.bytes_in_use) > |
|
MAX_ASYNC_BYTES_IN_USE) { |
|
atomic_sub(cmd_out_len, &ev_file->ev_queue.bytes_in_use); |
|
return -EAGAIN; |
|
} |
|
|
|
async_data = kvzalloc(struct_size(async_data, hdr.out_data, |
|
cmd_out_len), GFP_KERNEL); |
|
if (!async_data) { |
|
err = -ENOMEM; |
|
goto sub_bytes; |
|
} |
|
|
|
err = uverbs_copy_from(&async_data->hdr.wr_id, attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_WR_ID); |
|
if (err) |
|
goto free_async; |
|
|
|
async_data->cmd_out_len = cmd_out_len; |
|
async_data->mdev = mdev; |
|
async_data->ev_file = ev_file; |
|
|
|
MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid); |
|
err = mlx5_cmd_exec_cb(&ev_file->async_ctx, cmd_in, |
|
uverbs_attr_get_len(attrs, |
|
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_CMD_IN), |
|
async_data->hdr.out_data, |
|
async_data->cmd_out_len, |
|
devx_query_callback, &async_data->cb_work); |
|
|
|
if (err) |
|
goto free_async; |
|
|
|
return 0; |
|
|
|
free_async: |
|
kvfree(async_data); |
|
sub_bytes: |
|
atomic_sub(cmd_out_len, &ev_file->ev_queue.bytes_in_use); |
|
return err; |
|
} |
|
|
|
static void |
|
subscribe_event_xa_dealloc(struct mlx5_devx_event_table *devx_event_table, |
|
u32 key_level1, |
|
bool is_level2, |
|
u32 key_level2) |
|
{ |
|
struct devx_event *event; |
|
struct devx_obj_event *xa_val_level2; |
|
|
|
/* Level 1 is valid for future use, no need to free */ |
|
if (!is_level2) |
|
return; |
|
|
|
event = xa_load(&devx_event_table->event_xa, key_level1); |
|
WARN_ON(!event); |
|
|
|
xa_val_level2 = xa_load(&event->object_ids, |
|
key_level2); |
|
if (list_empty(&xa_val_level2->obj_sub_list)) { |
|
xa_erase(&event->object_ids, |
|
key_level2); |
|
kfree_rcu(xa_val_level2, rcu); |
|
} |
|
} |
|
|
|
static int |
|
subscribe_event_xa_alloc(struct mlx5_devx_event_table *devx_event_table, |
|
u32 key_level1, |
|
bool is_level2, |
|
u32 key_level2) |
|
{ |
|
struct devx_obj_event *obj_event; |
|
struct devx_event *event; |
|
int err; |
|
|
|
event = xa_load(&devx_event_table->event_xa, key_level1); |
|
if (!event) { |
|
event = kzalloc(sizeof(*event), GFP_KERNEL); |
|
if (!event) |
|
return -ENOMEM; |
|
|
|
INIT_LIST_HEAD(&event->unaffiliated_list); |
|
xa_init(&event->object_ids); |
|
|
|
err = xa_insert(&devx_event_table->event_xa, |
|
key_level1, |
|
event, |
|
GFP_KERNEL); |
|
if (err) { |
|
kfree(event); |
|
return err; |
|
} |
|
} |
|
|
|
if (!is_level2) |
|
return 0; |
|
|
|
obj_event = xa_load(&event->object_ids, key_level2); |
|
if (!obj_event) { |
|
obj_event = kzalloc(sizeof(*obj_event), GFP_KERNEL); |
|
if (!obj_event) |
|
/* Level1 is valid for future use, no need to free */ |
|
return -ENOMEM; |
|
|
|
err = xa_insert(&event->object_ids, |
|
key_level2, |
|
obj_event, |
|
GFP_KERNEL); |
|
if (err) |
|
return err; |
|
INIT_LIST_HEAD(&obj_event->obj_sub_list); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static bool is_valid_events_legacy(int num_events, u16 *event_type_num_list, |
|
struct devx_obj *obj) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < num_events; i++) { |
|
if (obj) { |
|
if (!is_legacy_obj_event_num(event_type_num_list[i])) |
|
return false; |
|
} else if (!is_legacy_unaffiliated_event_num( |
|
event_type_num_list[i])) { |
|
return false; |
|
} |
|
} |
|
|
|
return true; |
|
} |
|
|
|
#define MAX_SUPP_EVENT_NUM 255 |
|
static bool is_valid_events(struct mlx5_core_dev *dev, |
|
int num_events, u16 *event_type_num_list, |
|
struct devx_obj *obj) |
|
{ |
|
__be64 *aff_events; |
|
__be64 *unaff_events; |
|
int mask_entry; |
|
int mask_bit; |
|
int i; |
|
|
|
if (MLX5_CAP_GEN(dev, event_cap)) { |
|
aff_events = MLX5_CAP_DEV_EVENT(dev, |
|
user_affiliated_events); |
|
unaff_events = MLX5_CAP_DEV_EVENT(dev, |
|
user_unaffiliated_events); |
|
} else { |
|
return is_valid_events_legacy(num_events, event_type_num_list, |
|
obj); |
|
} |
|
|
|
for (i = 0; i < num_events; i++) { |
|
if (event_type_num_list[i] > MAX_SUPP_EVENT_NUM) |
|
return false; |
|
|
|
mask_entry = event_type_num_list[i] / 64; |
|
mask_bit = event_type_num_list[i] % 64; |
|
|
|
if (obj) { |
|
/* CQ completion */ |
|
if (event_type_num_list[i] == 0) |
|
continue; |
|
|
|
if (!(be64_to_cpu(aff_events[mask_entry]) & |
|
(1ull << mask_bit))) |
|
return false; |
|
|
|
continue; |
|
} |
|
|
|
if (!(be64_to_cpu(unaff_events[mask_entry]) & |
|
(1ull << mask_bit))) |
|
return false; |
|
} |
|
|
|
return true; |
|
} |
|
|
|
#define MAX_NUM_EVENTS 16 |
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
struct ib_uobject *devx_uobj = uverbs_attr_get_uobject( |
|
attrs, |
|
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE); |
|
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( |
|
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); |
|
struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); |
|
struct ib_uobject *fd_uobj; |
|
struct devx_obj *obj = NULL; |
|
struct devx_async_event_file *ev_file; |
|
struct mlx5_devx_event_table *devx_event_table = &dev->devx_event_table; |
|
u16 *event_type_num_list; |
|
struct devx_event_subscription *event_sub, *tmp_sub; |
|
struct list_head sub_list; |
|
int redirect_fd; |
|
bool use_eventfd = false; |
|
int num_events; |
|
int num_alloc_xa_entries = 0; |
|
u16 obj_type = 0; |
|
u64 cookie = 0; |
|
u32 obj_id = 0; |
|
int err; |
|
int i; |
|
|
|
if (!c->devx_uid) |
|
return -EINVAL; |
|
|
|
if (!IS_ERR(devx_uobj)) { |
|
obj = (struct devx_obj *)devx_uobj->object; |
|
if (obj) |
|
obj_id = get_dec_obj_id(obj->obj_id); |
|
} |
|
|
|
fd_uobj = uverbs_attr_get_uobject(attrs, |
|
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE); |
|
if (IS_ERR(fd_uobj)) |
|
return PTR_ERR(fd_uobj); |
|
|
|
ev_file = container_of(fd_uobj, struct devx_async_event_file, |
|
uobj); |
|
|
|
if (uverbs_attr_is_valid(attrs, |
|
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM)) { |
|
err = uverbs_copy_from(&redirect_fd, attrs, |
|
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM); |
|
if (err) |
|
return err; |
|
|
|
use_eventfd = true; |
|
} |
|
|
|
if (uverbs_attr_is_valid(attrs, |
|
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE)) { |
|
if (use_eventfd) |
|
return -EINVAL; |
|
|
|
err = uverbs_copy_from(&cookie, attrs, |
|
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE); |
|
if (err) |
|
return err; |
|
} |
|
|
|
num_events = uverbs_attr_ptr_get_array_size( |
|
attrs, MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST, |
|
sizeof(u16)); |
|
|
|
if (num_events < 0) |
|
return num_events; |
|
|
|
if (num_events > MAX_NUM_EVENTS) |
|
return -EINVAL; |
|
|
|
event_type_num_list = uverbs_attr_get_alloced_ptr(attrs, |
|
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST); |
|
|
|
if (!is_valid_events(dev->mdev, num_events, event_type_num_list, obj)) |
|
return -EINVAL; |
|
|
|
INIT_LIST_HEAD(&sub_list); |
|
|
|
/* Protect from concurrent subscriptions to same XA entries to allow |
|
* both to succeed |
|
*/ |
|
mutex_lock(&devx_event_table->event_xa_lock); |
|
for (i = 0; i < num_events; i++) { |
|
u32 key_level1; |
|
|
|
if (obj) |
|
obj_type = get_dec_obj_type(obj, |
|
event_type_num_list[i]); |
|
key_level1 = event_type_num_list[i] | obj_type << 16; |
|
|
|
err = subscribe_event_xa_alloc(devx_event_table, |
|
key_level1, |
|
obj, |
|
obj_id); |
|
if (err) |
|
goto err; |
|
|
|
num_alloc_xa_entries++; |
|
event_sub = kzalloc(sizeof(*event_sub), GFP_KERNEL); |
|
if (!event_sub) { |
|
err = -ENOMEM; |
|
goto err; |
|
} |
|
|
|
list_add_tail(&event_sub->event_list, &sub_list); |
|
uverbs_uobject_get(&ev_file->uobj); |
|
if (use_eventfd) { |
|
event_sub->eventfd = |
|
eventfd_ctx_fdget(redirect_fd); |
|
|
|
if (IS_ERR(event_sub->eventfd)) { |
|
err = PTR_ERR(event_sub->eventfd); |
|
event_sub->eventfd = NULL; |
|
goto err; |
|
} |
|
} |
|
|
|
event_sub->cookie = cookie; |
|
event_sub->ev_file = ev_file; |
|
/* May be needed upon cleanup the devx object/subscription */ |
|
event_sub->xa_key_level1 = key_level1; |
|
event_sub->xa_key_level2 = obj_id; |
|
INIT_LIST_HEAD(&event_sub->obj_list); |
|
} |
|
|
|
/* Once all the allocations and the XA data insertions were done we |
|
* can go ahead and add all the subscriptions to the relevant lists |
|
* without concern of a failure. |
|
*/ |
|
list_for_each_entry_safe(event_sub, tmp_sub, &sub_list, event_list) { |
|
struct devx_event *event; |
|
struct devx_obj_event *obj_event; |
|
|
|
list_del_init(&event_sub->event_list); |
|
|
|
spin_lock_irq(&ev_file->lock); |
|
list_add_tail_rcu(&event_sub->file_list, |
|
&ev_file->subscribed_events_list); |
|
spin_unlock_irq(&ev_file->lock); |
|
|
|
event = xa_load(&devx_event_table->event_xa, |
|
event_sub->xa_key_level1); |
|
WARN_ON(!event); |
|
|
|
if (!obj) { |
|
list_add_tail_rcu(&event_sub->xa_list, |
|
&event->unaffiliated_list); |
|
continue; |
|
} |
|
|
|
obj_event = xa_load(&event->object_ids, obj_id); |
|
WARN_ON(!obj_event); |
|
list_add_tail_rcu(&event_sub->xa_list, |
|
&obj_event->obj_sub_list); |
|
list_add_tail_rcu(&event_sub->obj_list, |
|
&obj->event_sub); |
|
} |
|
|
|
mutex_unlock(&devx_event_table->event_xa_lock); |
|
return 0; |
|
|
|
err: |
|
list_for_each_entry_safe(event_sub, tmp_sub, &sub_list, event_list) { |
|
list_del(&event_sub->event_list); |
|
|
|
subscribe_event_xa_dealloc(devx_event_table, |
|
event_sub->xa_key_level1, |
|
obj, |
|
obj_id); |
|
|
|
if (event_sub->eventfd) |
|
eventfd_ctx_put(event_sub->eventfd); |
|
uverbs_uobject_put(&event_sub->ev_file->uobj); |
|
kfree(event_sub); |
|
} |
|
|
|
mutex_unlock(&devx_event_table->event_xa_lock); |
|
return err; |
|
} |
|
|
|
static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext, |
|
struct uverbs_attr_bundle *attrs, |
|
struct devx_umem *obj) |
|
{ |
|
u64 addr; |
|
size_t size; |
|
u32 access; |
|
int err; |
|
|
|
if (uverbs_copy_from(&addr, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR) || |
|
uverbs_copy_from(&size, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_LEN)) |
|
return -EFAULT; |
|
|
|
err = uverbs_get_flags32(&access, attrs, |
|
MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS, |
|
IB_ACCESS_LOCAL_WRITE | |
|
IB_ACCESS_REMOTE_WRITE | |
|
IB_ACCESS_REMOTE_READ); |
|
if (err) |
|
return err; |
|
|
|
err = ib_check_mr_access(&dev->ib_dev, access); |
|
if (err) |
|
return err; |
|
|
|
obj->umem = ib_umem_get(&dev->ib_dev, addr, size, access); |
|
if (IS_ERR(obj->umem)) |
|
return PTR_ERR(obj->umem); |
|
return 0; |
|
} |
|
|
|
static unsigned int devx_umem_find_best_pgsize(struct ib_umem *umem, |
|
unsigned long pgsz_bitmap) |
|
{ |
|
unsigned long page_size; |
|
|
|
/* Don't bother checking larger page sizes as offset must be zero and |
|
* total DEVX umem length must be equal to total umem length. |
|
*/ |
|
pgsz_bitmap &= GENMASK_ULL(max_t(u64, order_base_2(umem->length), |
|
PAGE_SHIFT), |
|
MLX5_ADAPTER_PAGE_SHIFT); |
|
if (!pgsz_bitmap) |
|
return 0; |
|
|
|
page_size = ib_umem_find_best_pgoff(umem, pgsz_bitmap, U64_MAX); |
|
if (!page_size) |
|
return 0; |
|
|
|
/* If the page_size is less than the CPU page size then we can use the |
|
* offset and create a umem which is a subset of the page list. |
|
* For larger page sizes we can't be sure the DMA list reflects the |
|
* VA so we must ensure that the umem extent is exactly equal to the |
|
* page list. Reduce the page size until one of these cases is true. |
|
*/ |
|
while ((ib_umem_dma_offset(umem, page_size) != 0 || |
|
(umem->length % page_size) != 0) && |
|
page_size > PAGE_SIZE) |
|
page_size /= 2; |
|
|
|
return page_size; |
|
} |
|
|
|
static int devx_umem_reg_cmd_alloc(struct mlx5_ib_dev *dev, |
|
struct uverbs_attr_bundle *attrs, |
|
struct devx_umem *obj, |
|
struct devx_umem_reg_cmd *cmd) |
|
{ |
|
unsigned long pgsz_bitmap; |
|
unsigned int page_size; |
|
__be64 *mtt; |
|
void *umem; |
|
int ret; |
|
|
|
/* |
|
* If the user does not pass in pgsz_bitmap then the user promises not |
|
* to use umem_offset!=0 in any commands that allocate on top of the |
|
* umem. |
|
* |
|
* If the user wants to use a umem_offset then it must pass in |
|
* pgsz_bitmap which guides the maximum page size and thus maximum |
|
* object alignment inside the umem. See the PRM. |
|
* |
|
* Users are not allowed to use IOVA here, mkeys are not supported on |
|
* umem. |
|
*/ |
|
ret = uverbs_get_const_default(&pgsz_bitmap, attrs, |
|
MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP, |
|
GENMASK_ULL(63, |
|
min(PAGE_SHIFT, MLX5_ADAPTER_PAGE_SHIFT))); |
|
if (ret) |
|
return ret; |
|
|
|
page_size = devx_umem_find_best_pgsize(obj->umem, pgsz_bitmap); |
|
if (!page_size) |
|
return -EINVAL; |
|
|
|
cmd->inlen = MLX5_ST_SZ_BYTES(create_umem_in) + |
|
(MLX5_ST_SZ_BYTES(mtt) * |
|
ib_umem_num_dma_blocks(obj->umem, page_size)); |
|
cmd->in = uverbs_zalloc(attrs, cmd->inlen); |
|
if (IS_ERR(cmd->in)) |
|
return PTR_ERR(cmd->in); |
|
|
|
umem = MLX5_ADDR_OF(create_umem_in, cmd->in, umem); |
|
mtt = (__be64 *)MLX5_ADDR_OF(umem, umem, mtt); |
|
|
|
MLX5_SET(create_umem_in, cmd->in, opcode, MLX5_CMD_OP_CREATE_UMEM); |
|
MLX5_SET64(umem, umem, num_of_mtt, |
|
ib_umem_num_dma_blocks(obj->umem, page_size)); |
|
MLX5_SET(umem, umem, log_page_size, |
|
order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT); |
|
MLX5_SET(umem, umem, page_offset, |
|
ib_umem_dma_offset(obj->umem, page_size)); |
|
|
|
mlx5_ib_populate_pas(obj->umem, page_size, mtt, |
|
(obj->umem->writable ? MLX5_IB_MTT_WRITE : 0) | |
|
MLX5_IB_MTT_READ); |
|
return 0; |
|
} |
|
|
|
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_UMEM_REG)( |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
struct devx_umem_reg_cmd cmd; |
|
struct devx_umem *obj; |
|
struct ib_uobject *uobj = uverbs_attr_get_uobject( |
|
attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE); |
|
u32 obj_id; |
|
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( |
|
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); |
|
struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); |
|
int err; |
|
|
|
if (!c->devx_uid) |
|
return -EINVAL; |
|
|
|
obj = kzalloc(sizeof(struct devx_umem), GFP_KERNEL); |
|
if (!obj) |
|
return -ENOMEM; |
|
|
|
err = devx_umem_get(dev, &c->ibucontext, attrs, obj); |
|
if (err) |
|
goto err_obj_free; |
|
|
|
err = devx_umem_reg_cmd_alloc(dev, attrs, obj, &cmd); |
|
if (err) |
|
goto err_umem_release; |
|
|
|
MLX5_SET(create_umem_in, cmd.in, uid, c->devx_uid); |
|
err = mlx5_cmd_exec(dev->mdev, cmd.in, cmd.inlen, cmd.out, |
|
sizeof(cmd.out)); |
|
if (err) |
|
goto err_umem_release; |
|
|
|
obj->mdev = dev->mdev; |
|
uobj->object = obj; |
|
devx_obj_build_destroy_cmd(cmd.in, cmd.out, obj->dinbox, &obj->dinlen, &obj_id); |
|
uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE); |
|
|
|
err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, &obj_id, |
|
sizeof(obj_id)); |
|
return err; |
|
|
|
err_umem_release: |
|
ib_umem_release(obj->umem); |
|
err_obj_free: |
|
kfree(obj); |
|
return err; |
|
} |
|
|
|
static int devx_umem_cleanup(struct ib_uobject *uobject, |
|
enum rdma_remove_reason why, |
|
struct uverbs_attr_bundle *attrs) |
|
{ |
|
struct devx_umem *obj = uobject->object; |
|
u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; |
|
int err; |
|
|
|
err = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out)); |
|
if (err) |
|
return err; |
|
|
|
ib_umem_release(obj->umem); |
|
kfree(obj); |
|
return 0; |
|
} |
|
|
|
static bool is_unaffiliated_event(struct mlx5_core_dev *dev, |
|
unsigned long event_type) |
|
{ |
|
__be64 *unaff_events; |
|
int mask_entry; |
|
int mask_bit; |
|
|
|
if (!MLX5_CAP_GEN(dev, event_cap)) |
|
return is_legacy_unaffiliated_event_num(event_type); |
|
|
|
unaff_events = MLX5_CAP_DEV_EVENT(dev, |
|
user_unaffiliated_events); |
|
WARN_ON(event_type > MAX_SUPP_EVENT_NUM); |
|
|
|
mask_entry = event_type / 64; |
|
mask_bit = event_type % 64; |
|
|
|
if (!(be64_to_cpu(unaff_events[mask_entry]) & (1ull << mask_bit))) |
|
return false; |
|
|
|
return true; |
|
} |
|
|
|
static u32 devx_get_obj_id_from_event(unsigned long event_type, void *data) |
|
{ |
|
struct mlx5_eqe *eqe = data; |
|
u32 obj_id = 0; |
|
|
|
switch (event_type) { |
|
case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR: |
|
case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT: |
|
case MLX5_EVENT_TYPE_PATH_MIG: |
|
case MLX5_EVENT_TYPE_COMM_EST: |
|
case MLX5_EVENT_TYPE_SQ_DRAINED: |
|
case MLX5_EVENT_TYPE_SRQ_LAST_WQE: |
|
case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: |
|
case MLX5_EVENT_TYPE_PATH_MIG_FAILED: |
|
case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: |
|
case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: |
|
obj_id = be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff; |
|
break; |
|
case MLX5_EVENT_TYPE_XRQ_ERROR: |
|
obj_id = be32_to_cpu(eqe->data.xrq_err.type_xrqn) & 0xffffff; |
|
break; |
|
case MLX5_EVENT_TYPE_DCT_DRAINED: |
|
case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION: |
|
obj_id = be32_to_cpu(eqe->data.dct.dctn) & 0xffffff; |
|
break; |
|
case MLX5_EVENT_TYPE_CQ_ERROR: |
|
obj_id = be32_to_cpu(eqe->data.cq_err.cqn) & 0xffffff; |
|
break; |
|
default: |
|
obj_id = MLX5_GET(affiliated_event_header, &eqe->data, obj_id); |
|
break; |
|
} |
|
|
|
return obj_id; |
|
} |
|
|
|
static int deliver_event(struct devx_event_subscription *event_sub, |
|
const void *data) |
|
{ |
|
struct devx_async_event_file *ev_file; |
|
struct devx_async_event_data *event_data; |
|
unsigned long flags; |
|
|
|
ev_file = event_sub->ev_file; |
|
|
|
if (ev_file->omit_data) { |
|
spin_lock_irqsave(&ev_file->lock, flags); |
|
if (!list_empty(&event_sub->event_list) || |
|
ev_file->is_destroyed) { |
|
spin_unlock_irqrestore(&ev_file->lock, flags); |
|
return 0; |
|
} |
|
|
|
list_add_tail(&event_sub->event_list, &ev_file->event_list); |
|
spin_unlock_irqrestore(&ev_file->lock, flags); |
|
wake_up_interruptible(&ev_file->poll_wait); |
|
return 0; |
|
} |
|
|
|
event_data = kzalloc(sizeof(*event_data) + sizeof(struct mlx5_eqe), |
|
GFP_ATOMIC); |
|
if (!event_data) { |
|
spin_lock_irqsave(&ev_file->lock, flags); |
|
ev_file->is_overflow_err = 1; |
|
spin_unlock_irqrestore(&ev_file->lock, flags); |
|
return -ENOMEM; |
|
} |
|
|
|
event_data->hdr.cookie = event_sub->cookie; |
|
memcpy(event_data->hdr.out_data, data, sizeof(struct mlx5_eqe)); |
|
|
|
spin_lock_irqsave(&ev_file->lock, flags); |
|
if (!ev_file->is_destroyed) |
|
list_add_tail(&event_data->list, &ev_file->event_list); |
|
else |
|
kfree(event_data); |
|
spin_unlock_irqrestore(&ev_file->lock, flags); |
|
wake_up_interruptible(&ev_file->poll_wait); |
|
|
|
return 0; |
|
} |
|
|
|
static void dispatch_event_fd(struct list_head *fd_list, |
|
const void *data) |
|
{ |
|
struct devx_event_subscription *item; |
|
|
|
list_for_each_entry_rcu(item, fd_list, xa_list) { |
|
if (item->eventfd) |
|
eventfd_signal(item->eventfd, 1); |
|
else |
|
deliver_event(item, data); |
|
} |
|
} |
|
|
|
static int devx_event_notifier(struct notifier_block *nb, |
|
unsigned long event_type, void *data) |
|
{ |
|
struct mlx5_devx_event_table *table; |
|
struct mlx5_ib_dev *dev; |
|
struct devx_event *event; |
|
struct devx_obj_event *obj_event; |
|
u16 obj_type = 0; |
|
bool is_unaffiliated; |
|
u32 obj_id; |
|
|
|
/* Explicit filtering to kernel events which may occur frequently */ |
|
if (event_type == MLX5_EVENT_TYPE_CMD || |
|
event_type == MLX5_EVENT_TYPE_PAGE_REQUEST) |
|
return NOTIFY_OK; |
|
|
|
table = container_of(nb, struct mlx5_devx_event_table, devx_nb.nb); |
|
dev = container_of(table, struct mlx5_ib_dev, devx_event_table); |
|
is_unaffiliated = is_unaffiliated_event(dev->mdev, event_type); |
|
|
|
if (!is_unaffiliated) |
|
obj_type = get_event_obj_type(event_type, data); |
|
|
|
rcu_read_lock(); |
|
event = xa_load(&table->event_xa, event_type | (obj_type << 16)); |
|
if (!event) { |
|
rcu_read_unlock(); |
|
return NOTIFY_DONE; |
|
} |
|
|
|
if (is_unaffiliated) { |
|
dispatch_event_fd(&event->unaffiliated_list, data); |
|
rcu_read_unlock(); |
|
return NOTIFY_OK; |
|
} |
|
|
|
obj_id = devx_get_obj_id_from_event(event_type, data); |
|
obj_event = xa_load(&event->object_ids, obj_id); |
|
if (!obj_event) { |
|
rcu_read_unlock(); |
|
return NOTIFY_DONE; |
|
} |
|
|
|
dispatch_event_fd(&obj_event->obj_sub_list, data); |
|
|
|
rcu_read_unlock(); |
|
return NOTIFY_OK; |
|
} |
|
|
|
int mlx5_ib_devx_init(struct mlx5_ib_dev *dev) |
|
{ |
|
struct mlx5_devx_event_table *table = &dev->devx_event_table; |
|
int uid; |
|
|
|
uid = mlx5_ib_devx_create(dev, false); |
|
if (uid > 0) { |
|
dev->devx_whitelist_uid = uid; |
|
xa_init(&table->event_xa); |
|
mutex_init(&table->event_xa_lock); |
|
MLX5_NB_INIT(&table->devx_nb, devx_event_notifier, NOTIFY_ANY); |
|
mlx5_eq_notifier_register(dev->mdev, &table->devx_nb); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
void mlx5_ib_devx_cleanup(struct mlx5_ib_dev *dev) |
|
{ |
|
struct mlx5_devx_event_table *table = &dev->devx_event_table; |
|
struct devx_event_subscription *sub, *tmp; |
|
struct devx_event *event; |
|
void *entry; |
|
unsigned long id; |
|
|
|
if (dev->devx_whitelist_uid) { |
|
mlx5_eq_notifier_unregister(dev->mdev, &table->devx_nb); |
|
mutex_lock(&dev->devx_event_table.event_xa_lock); |
|
xa_for_each(&table->event_xa, id, entry) { |
|
event = entry; |
|
list_for_each_entry_safe( |
|
sub, tmp, &event->unaffiliated_list, xa_list) |
|
devx_cleanup_subscription(dev, sub); |
|
kfree(entry); |
|
} |
|
mutex_unlock(&dev->devx_event_table.event_xa_lock); |
|
xa_destroy(&table->event_xa); |
|
|
|
mlx5_ib_devx_destroy(dev, dev->devx_whitelist_uid); |
|
} |
|
} |
|
|
|
static ssize_t devx_async_cmd_event_read(struct file *filp, char __user *buf, |
|
size_t count, loff_t *pos) |
|
{ |
|
struct devx_async_cmd_event_file *comp_ev_file = filp->private_data; |
|
struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue; |
|
struct devx_async_data *event; |
|
int ret = 0; |
|
size_t eventsz; |
|
|
|
spin_lock_irq(&ev_queue->lock); |
|
|
|
while (list_empty(&ev_queue->event_list)) { |
|
spin_unlock_irq(&ev_queue->lock); |
|
|
|
if (filp->f_flags & O_NONBLOCK) |
|
return -EAGAIN; |
|
|
|
if (wait_event_interruptible( |
|
ev_queue->poll_wait, |
|
(!list_empty(&ev_queue->event_list) || |
|
ev_queue->is_destroyed))) { |
|
return -ERESTARTSYS; |
|
} |
|
|
|
spin_lock_irq(&ev_queue->lock); |
|
if (ev_queue->is_destroyed) { |
|
spin_unlock_irq(&ev_queue->lock); |
|
return -EIO; |
|
} |
|
} |
|
|
|
event = list_entry(ev_queue->event_list.next, |
|
struct devx_async_data, list); |
|
eventsz = event->cmd_out_len + |
|
sizeof(struct mlx5_ib_uapi_devx_async_cmd_hdr); |
|
|
|
if (eventsz > count) { |
|
spin_unlock_irq(&ev_queue->lock); |
|
return -ENOSPC; |
|
} |
|
|
|
list_del(ev_queue->event_list.next); |
|
spin_unlock_irq(&ev_queue->lock); |
|
|
|
if (copy_to_user(buf, &event->hdr, eventsz)) |
|
ret = -EFAULT; |
|
else |
|
ret = eventsz; |
|
|
|
atomic_sub(event->cmd_out_len, &ev_queue->bytes_in_use); |
|
kvfree(event); |
|
return ret; |
|
} |
|
|
|
static __poll_t devx_async_cmd_event_poll(struct file *filp, |
|
struct poll_table_struct *wait) |
|
{ |
|
struct devx_async_cmd_event_file *comp_ev_file = filp->private_data; |
|
struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue; |
|
__poll_t pollflags = 0; |
|
|
|
poll_wait(filp, &ev_queue->poll_wait, wait); |
|
|
|
spin_lock_irq(&ev_queue->lock); |
|
if (ev_queue->is_destroyed) |
|
pollflags = EPOLLIN | EPOLLRDNORM | EPOLLRDHUP; |
|
else if (!list_empty(&ev_queue->event_list)) |
|
pollflags = EPOLLIN | EPOLLRDNORM; |
|
spin_unlock_irq(&ev_queue->lock); |
|
|
|
return pollflags; |
|
} |
|
|
|
static const struct file_operations devx_async_cmd_event_fops = { |
|
.owner = THIS_MODULE, |
|
.read = devx_async_cmd_event_read, |
|
.poll = devx_async_cmd_event_poll, |
|
.release = uverbs_uobject_fd_release, |
|
.llseek = no_llseek, |
|
}; |
|
|
|
static ssize_t devx_async_event_read(struct file *filp, char __user *buf, |
|
size_t count, loff_t *pos) |
|
{ |
|
struct devx_async_event_file *ev_file = filp->private_data; |
|
struct devx_event_subscription *event_sub; |
|
struct devx_async_event_data *event; |
|
int ret = 0; |
|
size_t eventsz; |
|
bool omit_data; |
|
void *event_data; |
|
|
|
omit_data = ev_file->omit_data; |
|
|
|
spin_lock_irq(&ev_file->lock); |
|
|
|
if (ev_file->is_overflow_err) { |
|
ev_file->is_overflow_err = 0; |
|
spin_unlock_irq(&ev_file->lock); |
|
return -EOVERFLOW; |
|
} |
|
|
|
|
|
while (list_empty(&ev_file->event_list)) { |
|
spin_unlock_irq(&ev_file->lock); |
|
|
|
if (filp->f_flags & O_NONBLOCK) |
|
return -EAGAIN; |
|
|
|
if (wait_event_interruptible(ev_file->poll_wait, |
|
(!list_empty(&ev_file->event_list) || |
|
ev_file->is_destroyed))) { |
|
return -ERESTARTSYS; |
|
} |
|
|
|
spin_lock_irq(&ev_file->lock); |
|
if (ev_file->is_destroyed) { |
|
spin_unlock_irq(&ev_file->lock); |
|
return -EIO; |
|
} |
|
} |
|
|
|
if (omit_data) { |
|
event_sub = list_first_entry(&ev_file->event_list, |
|
struct devx_event_subscription, |
|
event_list); |
|
eventsz = sizeof(event_sub->cookie); |
|
event_data = &event_sub->cookie; |
|
} else { |
|
event = list_first_entry(&ev_file->event_list, |
|
struct devx_async_event_data, list); |
|
eventsz = sizeof(struct mlx5_eqe) + |
|
sizeof(struct mlx5_ib_uapi_devx_async_event_hdr); |
|
event_data = &event->hdr; |
|
} |
|
|
|
if (eventsz > count) { |
|
spin_unlock_irq(&ev_file->lock); |
|
return -EINVAL; |
|
} |
|
|
|
if (omit_data) |
|
list_del_init(&event_sub->event_list); |
|
else |
|
list_del(&event->list); |
|
|
|
spin_unlock_irq(&ev_file->lock); |
|
|
|
if (copy_to_user(buf, event_data, eventsz)) |
|
/* This points to an application issue, not a kernel concern */ |
|
ret = -EFAULT; |
|
else |
|
ret = eventsz; |
|
|
|
if (!omit_data) |
|
kfree(event); |
|
return ret; |
|
} |
|
|
|
static __poll_t devx_async_event_poll(struct file *filp, |
|
struct poll_table_struct *wait) |
|
{ |
|
struct devx_async_event_file *ev_file = filp->private_data; |
|
__poll_t pollflags = 0; |
|
|
|
poll_wait(filp, &ev_file->poll_wait, wait); |
|
|
|
spin_lock_irq(&ev_file->lock); |
|
if (ev_file->is_destroyed) |
|
pollflags = EPOLLIN | EPOLLRDNORM | EPOLLRDHUP; |
|
else if (!list_empty(&ev_file->event_list)) |
|
pollflags = EPOLLIN | EPOLLRDNORM; |
|
spin_unlock_irq(&ev_file->lock); |
|
|
|
return pollflags; |
|
} |
|
|
|
static void devx_free_subscription(struct rcu_head *rcu) |
|
{ |
|
struct devx_event_subscription *event_sub = |
|
container_of(rcu, struct devx_event_subscription, rcu); |
|
|
|
if (event_sub->eventfd) |
|
eventfd_ctx_put(event_sub->eventfd); |
|
uverbs_uobject_put(&event_sub->ev_file->uobj); |
|
kfree(event_sub); |
|
} |
|
|
|
static const struct file_operations devx_async_event_fops = { |
|
.owner = THIS_MODULE, |
|
.read = devx_async_event_read, |
|
.poll = devx_async_event_poll, |
|
.release = uverbs_uobject_fd_release, |
|
.llseek = no_llseek, |
|
}; |
|
|
|
static void devx_async_cmd_event_destroy_uobj(struct ib_uobject *uobj, |
|
enum rdma_remove_reason why) |
|
{ |
|
struct devx_async_cmd_event_file *comp_ev_file = |
|
container_of(uobj, struct devx_async_cmd_event_file, |
|
uobj); |
|
struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue; |
|
struct devx_async_data *entry, *tmp; |
|
|
|
spin_lock_irq(&ev_queue->lock); |
|
ev_queue->is_destroyed = 1; |
|
spin_unlock_irq(&ev_queue->lock); |
|
wake_up_interruptible(&ev_queue->poll_wait); |
|
|
|
mlx5_cmd_cleanup_async_ctx(&comp_ev_file->async_ctx); |
|
|
|
spin_lock_irq(&comp_ev_file->ev_queue.lock); |
|
list_for_each_entry_safe(entry, tmp, |
|
&comp_ev_file->ev_queue.event_list, list) { |
|
list_del(&entry->list); |
|
kvfree(entry); |
|
} |
|
spin_unlock_irq(&comp_ev_file->ev_queue.lock); |
|
}; |
|
|
|
static void devx_async_event_destroy_uobj(struct ib_uobject *uobj, |
|
enum rdma_remove_reason why) |
|
{ |
|
struct devx_async_event_file *ev_file = |
|
container_of(uobj, struct devx_async_event_file, |
|
uobj); |
|
struct devx_event_subscription *event_sub, *event_sub_tmp; |
|
struct mlx5_ib_dev *dev = ev_file->dev; |
|
|
|
spin_lock_irq(&ev_file->lock); |
|
ev_file->is_destroyed = 1; |
|
|
|
/* free the pending events allocation */ |
|
if (ev_file->omit_data) { |
|
struct devx_event_subscription *event_sub, *tmp; |
|
|
|
list_for_each_entry_safe(event_sub, tmp, &ev_file->event_list, |
|
event_list) |
|
list_del_init(&event_sub->event_list); |
|
|
|
} else { |
|
struct devx_async_event_data *entry, *tmp; |
|
|
|
list_for_each_entry_safe(entry, tmp, &ev_file->event_list, |
|
list) { |
|
list_del(&entry->list); |
|
kfree(entry); |
|
} |
|
} |
|
|
|
spin_unlock_irq(&ev_file->lock); |
|
wake_up_interruptible(&ev_file->poll_wait); |
|
|
|
mutex_lock(&dev->devx_event_table.event_xa_lock); |
|
/* delete the subscriptions which are related to this FD */ |
|
list_for_each_entry_safe(event_sub, event_sub_tmp, |
|
&ev_file->subscribed_events_list, file_list) { |
|
devx_cleanup_subscription(dev, event_sub); |
|
list_del_rcu(&event_sub->file_list); |
|
/* subscription may not be used by the read API any more */ |
|
call_rcu(&event_sub->rcu, devx_free_subscription); |
|
} |
|
mutex_unlock(&dev->devx_event_table.event_xa_lock); |
|
|
|
put_device(&dev->ib_dev.dev); |
|
}; |
|
|
|
DECLARE_UVERBS_NAMED_METHOD( |
|
MLX5_IB_METHOD_DEVX_UMEM_REG, |
|
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE, |
|
MLX5_IB_OBJECT_DEVX_UMEM, |
|
UVERBS_ACCESS_NEW, |
|
UA_MANDATORY), |
|
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR, |
|
UVERBS_ATTR_TYPE(u64), |
|
UA_MANDATORY), |
|
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN, |
|
UVERBS_ATTR_TYPE(u64), |
|
UA_MANDATORY), |
|
UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS, |
|
enum ib_access_flags), |
|
UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP, |
|
u64), |
|
UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, |
|
UVERBS_ATTR_TYPE(u32), |
|
UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_METHOD_DESTROY( |
|
MLX5_IB_METHOD_DEVX_UMEM_DEREG, |
|
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_DEREG_HANDLE, |
|
MLX5_IB_OBJECT_DEVX_UMEM, |
|
UVERBS_ACCESS_DESTROY, |
|
UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_METHOD( |
|
MLX5_IB_METHOD_DEVX_QUERY_EQN, |
|
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC, |
|
UVERBS_ATTR_TYPE(u32), |
|
UA_MANDATORY), |
|
UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN, |
|
UVERBS_ATTR_TYPE(u32), |
|
UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_METHOD( |
|
MLX5_IB_METHOD_DEVX_QUERY_UAR, |
|
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX, |
|
UVERBS_ATTR_TYPE(u32), |
|
UA_MANDATORY), |
|
UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX, |
|
UVERBS_ATTR_TYPE(u32), |
|
UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_METHOD( |
|
MLX5_IB_METHOD_DEVX_OTHER, |
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UVERBS_ATTR_PTR_IN( |
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MLX5_IB_ATTR_DEVX_OTHER_CMD_IN, |
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UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), |
|
UA_MANDATORY, |
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UA_ALLOC_AND_COPY), |
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UVERBS_ATTR_PTR_OUT( |
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MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, |
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UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), |
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UA_MANDATORY)); |
|
|
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DECLARE_UVERBS_NAMED_METHOD( |
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MLX5_IB_METHOD_DEVX_OBJ_CREATE, |
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UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE, |
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MLX5_IB_OBJECT_DEVX_OBJ, |
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UVERBS_ACCESS_NEW, |
|
UA_MANDATORY), |
|
UVERBS_ATTR_PTR_IN( |
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MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN, |
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UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), |
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UA_MANDATORY, |
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UA_ALLOC_AND_COPY), |
|
UVERBS_ATTR_PTR_OUT( |
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MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, |
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UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), |
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UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_METHOD_DESTROY( |
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MLX5_IB_METHOD_DEVX_OBJ_DESTROY, |
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UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_DESTROY_HANDLE, |
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MLX5_IB_OBJECT_DEVX_OBJ, |
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UVERBS_ACCESS_DESTROY, |
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UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_METHOD( |
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MLX5_IB_METHOD_DEVX_OBJ_MODIFY, |
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UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE, |
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UVERBS_IDR_ANY_OBJECT, |
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UVERBS_ACCESS_WRITE, |
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UA_MANDATORY), |
|
UVERBS_ATTR_PTR_IN( |
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MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN, |
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UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), |
|
UA_MANDATORY, |
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UA_ALLOC_AND_COPY), |
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UVERBS_ATTR_PTR_OUT( |
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MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT, |
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UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), |
|
UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_METHOD( |
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MLX5_IB_METHOD_DEVX_OBJ_QUERY, |
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UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE, |
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UVERBS_IDR_ANY_OBJECT, |
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UVERBS_ACCESS_READ, |
|
UA_MANDATORY), |
|
UVERBS_ATTR_PTR_IN( |
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MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN, |
|
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), |
|
UA_MANDATORY, |
|
UA_ALLOC_AND_COPY), |
|
UVERBS_ATTR_PTR_OUT( |
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MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT, |
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UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)), |
|
UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_METHOD( |
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MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY, |
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UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE, |
|
UVERBS_IDR_ANY_OBJECT, |
|
UVERBS_ACCESS_READ, |
|
UA_MANDATORY), |
|
UVERBS_ATTR_PTR_IN( |
|
MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN, |
|
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)), |
|
UA_MANDATORY, |
|
UA_ALLOC_AND_COPY), |
|
UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN, |
|
u16, UA_MANDATORY), |
|
UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_FD, |
|
MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, |
|
UVERBS_ACCESS_READ, |
|
UA_MANDATORY), |
|
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_WR_ID, |
|
UVERBS_ATTR_TYPE(u64), |
|
UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_METHOD( |
|
MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT, |
|
UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE, |
|
MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, |
|
UVERBS_ACCESS_READ, |
|
UA_MANDATORY), |
|
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE, |
|
MLX5_IB_OBJECT_DEVX_OBJ, |
|
UVERBS_ACCESS_READ, |
|
UA_OPTIONAL), |
|
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST, |
|
UVERBS_ATTR_MIN_SIZE(sizeof(u16)), |
|
UA_MANDATORY, |
|
UA_ALLOC_AND_COPY), |
|
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE, |
|
UVERBS_ATTR_TYPE(u64), |
|
UA_OPTIONAL), |
|
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM, |
|
UVERBS_ATTR_TYPE(u32), |
|
UA_OPTIONAL)); |
|
|
|
DECLARE_UVERBS_GLOBAL_METHODS(MLX5_IB_OBJECT_DEVX, |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OTHER), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)); |
|
|
|
DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ, |
|
UVERBS_TYPE_ALLOC_IDR(devx_obj_cleanup), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_CREATE), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_DESTROY), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_MODIFY), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_QUERY), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY)); |
|
|
|
DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM, |
|
UVERBS_TYPE_ALLOC_IDR(devx_umem_cleanup), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_REG), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG)); |
|
|
|
|
|
DECLARE_UVERBS_NAMED_METHOD( |
|
MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC, |
|
UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE, |
|
MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, |
|
UVERBS_ACCESS_NEW, |
|
UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_OBJECT( |
|
MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, |
|
UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_cmd_event_file), |
|
devx_async_cmd_event_destroy_uobj, |
|
&devx_async_cmd_event_fops, "[devx_async_cmd]", |
|
O_RDONLY), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC)); |
|
|
|
DECLARE_UVERBS_NAMED_METHOD( |
|
MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC, |
|
UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE, |
|
MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, |
|
UVERBS_ACCESS_NEW, |
|
UA_MANDATORY), |
|
UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS, |
|
enum mlx5_ib_uapi_devx_create_event_channel_flags, |
|
UA_MANDATORY)); |
|
|
|
DECLARE_UVERBS_NAMED_OBJECT( |
|
MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, |
|
UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_event_file), |
|
devx_async_event_destroy_uobj, |
|
&devx_async_event_fops, "[devx_async_event]", |
|
O_RDONLY), |
|
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC)); |
|
|
|
static bool devx_is_supported(struct ib_device *device) |
|
{ |
|
struct mlx5_ib_dev *dev = to_mdev(device); |
|
|
|
return MLX5_CAP_GEN(dev->mdev, log_max_uctx); |
|
} |
|
|
|
const struct uapi_definition mlx5_ib_devx_defs[] = { |
|
UAPI_DEF_CHAIN_OBJ_TREE_NAMED( |
|
MLX5_IB_OBJECT_DEVX, |
|
UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), |
|
UAPI_DEF_CHAIN_OBJ_TREE_NAMED( |
|
MLX5_IB_OBJECT_DEVX_OBJ, |
|
UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), |
|
UAPI_DEF_CHAIN_OBJ_TREE_NAMED( |
|
MLX5_IB_OBJECT_DEVX_UMEM, |
|
UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), |
|
UAPI_DEF_CHAIN_OBJ_TREE_NAMED( |
|
MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, |
|
UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), |
|
UAPI_DEF_CHAIN_OBJ_TREE_NAMED( |
|
MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, |
|
UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), |
|
{}, |
|
};
|
|
|