treewide: remove redundant IS_ERR() before error code check

[linux/fpc-iii.git] / drivers / infiniband / hw / mlx5 / mlx5_ib.h

/*
 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef MLX5_IB_H
#define MLX5_IB_H

#include <linux/kernel.h>
#include <linux/sched.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_umem.h>
#include <rdma/ib_smi.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/cq.h>
#include <linux/mlx5/fs.h>
#include <linux/mlx5/qp.h>
#include <linux/types.h>
#include <linux/mlx5/transobj.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/mlx5-abi.h>
#include <rdma/uverbs_ioctl.h>
#include <rdma/mlx5_user_ioctl_cmds.h>
#include <rdma/mlx5_user_ioctl_verbs.h>

#include "srq.h"

#define mlx5_ib_dbg(_dev, format, arg...)                                      \
        dev_dbg(&(_dev)->ib_dev.dev, "%s:%d:(pid %d): " format, __func__,      \
                __LINE__, current->pid, ##arg)

#define mlx5_ib_err(_dev, format, arg...)                                      \
        dev_err(&(_dev)->ib_dev.dev, "%s:%d:(pid %d): " format, __func__,      \
                __LINE__, current->pid, ##arg)

#define mlx5_ib_warn(_dev, format, arg...)                                     \
        dev_warn(&(_dev)->ib_dev.dev, "%s:%d:(pid %d): " format, __func__,     \
                 __LINE__, current->pid, ##arg)

#define field_avail(type, fld, sz) (offsetof(type, fld) +               \
                                    sizeof(((type *)0)->fld) <= (sz))
#define MLX5_IB_DEFAULT_UIDX 0xffffff
#define MLX5_USER_ASSIGNED_UIDX_MASK __mlx5_mask(qpc, user_index)

#define MLX5_MKEY_PAGE_SHIFT_MASK __mlx5_mask(mkc, log_page_size)

enum {
        MLX5_IB_MMAP_OFFSET_START = 9,
        MLX5_IB_MMAP_OFFSET_END = 255,
};

enum {
        MLX5_IB_MMAP_CMD_SHIFT  = 8,
        MLX5_IB_MMAP_CMD_MASK   = 0xff,
};

enum {
        MLX5_RES_SCAT_DATA32_CQE        = 0x1,
        MLX5_RES_SCAT_DATA64_CQE        = 0x2,
        MLX5_REQ_SCAT_DATA32_CQE        = 0x11,
        MLX5_REQ_SCAT_DATA64_CQE        = 0x22,
};

enum mlx5_ib_mad_ifc_flags {
        MLX5_MAD_IFC_IGNORE_MKEY        = 1,
        MLX5_MAD_IFC_IGNORE_BKEY        = 2,
        MLX5_MAD_IFC_NET_VIEW           = 4,
};

enum {
        MLX5_CROSS_CHANNEL_BFREG         = 0,
};

enum {
        MLX5_CQE_VERSION_V0,
        MLX5_CQE_VERSION_V1,
};

enum {
        MLX5_TM_MAX_RNDV_MSG_SIZE       = 64,
        MLX5_TM_MAX_SGE                 = 1,
};

enum {
        MLX5_IB_INVALID_UAR_INDEX       = BIT(31),
        MLX5_IB_INVALID_BFREG           = BIT(31),
};

enum {
        MLX5_MAX_MEMIC_PAGES = 0x100,
        MLX5_MEMIC_ALLOC_SIZE_MASK = 0x3f,
};

enum {
        MLX5_MEMIC_BASE_ALIGN   = 6,
        MLX5_MEMIC_BASE_SIZE    = 1 << MLX5_MEMIC_BASE_ALIGN,
};

enum mlx5_ib_mmap_type {
        MLX5_IB_MMAP_TYPE_MEMIC = 1,
        MLX5_IB_MMAP_TYPE_VAR = 2,
};

#define MLX5_LOG_SW_ICM_BLOCK_SIZE(dev)                                        \
        (MLX5_CAP_DEV_MEM(dev, log_sw_icm_alloc_granularity))
#define MLX5_SW_ICM_BLOCK_SIZE(dev) (1 << MLX5_LOG_SW_ICM_BLOCK_SIZE(dev))

struct mlx5_ib_ucontext {
        struct ib_ucontext      ibucontext;
        struct list_head        db_page_list;

        /* protect doorbell record alloc/free
         */
        struct mutex            db_page_mutex;
        struct mlx5_bfreg_info  bfregi;
        u8                      cqe_version;
        /* Transport Domain number */
        u32                     tdn;

        u64                     lib_caps;
        u16                     devx_uid;
        /* For RoCE LAG TX affinity */
        atomic_t                tx_port_affinity;
};

static inline struct mlx5_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
{
        return container_of(ibucontext, struct mlx5_ib_ucontext, ibucontext);
}

struct mlx5_ib_pd {
        struct ib_pd            ibpd;
        u32                     pdn;
        u16                     uid;
};

enum {
        MLX5_IB_FLOW_ACTION_MODIFY_HEADER,
        MLX5_IB_FLOW_ACTION_PACKET_REFORMAT,
        MLX5_IB_FLOW_ACTION_DECAP,
};

#define MLX5_IB_FLOW_MCAST_PRIO         (MLX5_BY_PASS_NUM_PRIOS - 1)
#define MLX5_IB_FLOW_LAST_PRIO          (MLX5_BY_PASS_NUM_REGULAR_PRIOS - 1)
#if (MLX5_IB_FLOW_LAST_PRIO <= 0)
#error "Invalid number of bypass priorities"
#endif
#define MLX5_IB_FLOW_LEFTOVERS_PRIO     (MLX5_IB_FLOW_MCAST_PRIO + 1)

#define MLX5_IB_NUM_FLOW_FT             (MLX5_IB_FLOW_LEFTOVERS_PRIO + 1)
#define MLX5_IB_NUM_SNIFFER_FTS         2
#define MLX5_IB_NUM_EGRESS_FTS          1
struct mlx5_ib_flow_prio {
        struct mlx5_flow_table          *flow_table;
        unsigned int                    refcount;
};

struct mlx5_ib_flow_handler {
        struct list_head                list;
        struct ib_flow                  ibflow;
        struct mlx5_ib_flow_prio        *prio;
        struct mlx5_flow_handle         *rule;
        struct ib_counters              *ibcounters;
        struct mlx5_ib_dev              *dev;
        struct mlx5_ib_flow_matcher     *flow_matcher;
};

struct mlx5_ib_flow_matcher {
        struct mlx5_ib_match_params matcher_mask;
        int                     mask_len;
        enum mlx5_ib_flow_type  flow_type;
        enum mlx5_flow_namespace_type ns_type;
        u16                     priority;
        struct mlx5_core_dev    *mdev;
        atomic_t                usecnt;
        u8                      match_criteria_enable;
};

struct mlx5_ib_flow_db {
        struct mlx5_ib_flow_prio        prios[MLX5_IB_NUM_FLOW_FT];
        struct mlx5_ib_flow_prio        egress_prios[MLX5_IB_NUM_FLOW_FT];
        struct mlx5_ib_flow_prio        sniffer[MLX5_IB_NUM_SNIFFER_FTS];
        struct mlx5_ib_flow_prio        egress[MLX5_IB_NUM_EGRESS_FTS];
        struct mlx5_ib_flow_prio        fdb;
        struct mlx5_ib_flow_prio        rdma_rx[MLX5_IB_NUM_FLOW_FT];
        struct mlx5_flow_table          *lag_demux_ft;
        /* Protect flow steering bypass flow tables
         * when add/del flow rules.
         * only single add/removal of flow steering rule could be done
         * simultaneously.
         */
        struct mutex                    lock;
};

/* Use macros here so that don't have to duplicate
 * enum ib_send_flags and enum ib_qp_type for low-level driver
 */

#define MLX5_IB_SEND_UMR_ENABLE_MR             (IB_SEND_RESERVED_START << 0)
#define MLX5_IB_SEND_UMR_DISABLE_MR            (IB_SEND_RESERVED_START << 1)
#define MLX5_IB_SEND_UMR_FAIL_IF_FREE          (IB_SEND_RESERVED_START << 2)
#define MLX5_IB_SEND_UMR_UPDATE_XLT            (IB_SEND_RESERVED_START << 3)
#define MLX5_IB_SEND_UMR_UPDATE_TRANSLATION    (IB_SEND_RESERVED_START << 4)
#define MLX5_IB_SEND_UMR_UPDATE_PD_ACCESS       IB_SEND_RESERVED_END

#define MLX5_IB_QPT_REG_UMR     IB_QPT_RESERVED1
/*
 * IB_QPT_GSI creates the software wrapper around GSI, and MLX5_IB_QPT_HW_GSI
 * creates the actual hardware QP.
 */
#define MLX5_IB_QPT_HW_GSI      IB_QPT_RESERVED2
#define MLX5_IB_QPT_DCI         IB_QPT_RESERVED3
#define MLX5_IB_QPT_DCT         IB_QPT_RESERVED4
#define MLX5_IB_WR_UMR          IB_WR_RESERVED1

#define MLX5_IB_UMR_OCTOWORD           16
#define MLX5_IB_UMR_XLT_ALIGNMENT      64

#define MLX5_IB_UPD_XLT_ZAP           BIT(0)
#define MLX5_IB_UPD_XLT_ENABLE        BIT(1)
#define MLX5_IB_UPD_XLT_ATOMIC        BIT(2)
#define MLX5_IB_UPD_XLT_ADDR          BIT(3)
#define MLX5_IB_UPD_XLT_PD            BIT(4)
#define MLX5_IB_UPD_XLT_ACCESS        BIT(5)
#define MLX5_IB_UPD_XLT_INDIRECT      BIT(6)

/* Private QP creation flags to be passed in ib_qp_init_attr.create_flags.
 *
 * These flags are intended for internal use by the mlx5_ib driver, and they
 * rely on the range reserved for that use in the ib_qp_create_flags enum.
 */
#define MLX5_IB_QP_CREATE_SQPN_QP1      IB_QP_CREATE_RESERVED_START
#define MLX5_IB_QP_CREATE_WC_TEST       (IB_QP_CREATE_RESERVED_START << 1)

struct wr_list {
        u16     opcode;
        u16     next;
};

enum mlx5_ib_rq_flags {
        MLX5_IB_RQ_CVLAN_STRIPPING      = 1 << 0,
        MLX5_IB_RQ_PCI_WRITE_END_PADDING        = 1 << 1,
};

struct mlx5_ib_wq {
        struct mlx5_frag_buf_ctrl fbc;
        u64                    *wrid;
        u32                    *wr_data;
        struct wr_list         *w_list;
        unsigned               *wqe_head;
        u16                     unsig_count;

        /* serialize post to the work queue
         */
        spinlock_t              lock;
        int                     wqe_cnt;
        int                     max_post;
        int                     max_gs;
        int                     offset;
        int                     wqe_shift;
        unsigned                head;
        unsigned                tail;
        u16                     cur_post;
        void                    *cur_edge;
};

enum mlx5_ib_wq_flags {
        MLX5_IB_WQ_FLAGS_DELAY_DROP = 0x1,
        MLX5_IB_WQ_FLAGS_STRIDING_RQ = 0x2,
};

#define MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES 9
#define MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES 16
#define MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES 6
#define MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES 13
#define MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES 3

struct mlx5_ib_rwq {
        struct ib_wq            ibwq;
        struct mlx5_core_qp     core_qp;
        u32                     rq_num_pas;
        u32                     log_rq_stride;
        u32                     log_rq_size;
        u32                     rq_page_offset;
        u32                     log_page_size;
        u32                     log_num_strides;
        u32                     two_byte_shift_en;
        u32                     single_stride_log_num_of_bytes;
        struct ib_umem          *umem;
        size_t                  buf_size;
        unsigned int            page_shift;
        int                     create_type;
        struct mlx5_db          db;
        u32                     user_index;
        u32                     wqe_count;
        u32                     wqe_shift;
        int                     wq_sig;
        u32                     create_flags; /* Use enum mlx5_ib_wq_flags */
};

enum {
        MLX5_QP_USER,
        MLX5_QP_KERNEL,
        MLX5_QP_EMPTY
};

enum {
        MLX5_WQ_USER,
        MLX5_WQ_KERNEL
};

struct mlx5_ib_rwq_ind_table {
        struct ib_rwq_ind_table ib_rwq_ind_tbl;
        u32                     rqtn;
        u16                     uid;
};

struct mlx5_ib_ubuffer {
        struct ib_umem         *umem;
        int                     buf_size;
        u64                     buf_addr;
};

struct mlx5_ib_qp_base {
        struct mlx5_ib_qp       *container_mibqp;
        struct mlx5_core_qp     mqp;
        struct mlx5_ib_ubuffer  ubuffer;
};

struct mlx5_ib_qp_trans {
        struct mlx5_ib_qp_base  base;
        u16                     xrcdn;
        u8                      alt_port;
        u8                      atomic_rd_en;
        u8                      resp_depth;
};

struct mlx5_ib_rss_qp {
        u32     tirn;
};

struct mlx5_ib_rq {
        struct mlx5_ib_qp_base base;
        struct mlx5_ib_wq       *rq;
        struct mlx5_ib_ubuffer  ubuffer;
        struct mlx5_db          *doorbell;
        u32                     tirn;
        u8                      state;
        u32                     flags;
};

struct mlx5_ib_sq {
        struct mlx5_ib_qp_base base;
        struct mlx5_ib_wq       *sq;
        struct mlx5_ib_ubuffer  ubuffer;
        struct mlx5_db          *doorbell;
        struct mlx5_flow_handle *flow_rule;
        u32                     tisn;
        u8                      state;
};

struct mlx5_ib_raw_packet_qp {
        struct mlx5_ib_sq sq;
        struct mlx5_ib_rq rq;
};

struct mlx5_bf {
        int                     buf_size;
        unsigned long           offset;
        struct mlx5_sq_bfreg   *bfreg;
};

struct mlx5_ib_dct {
        struct mlx5_core_dct    mdct;
        u32                     *in;
};

struct mlx5_ib_qp {
        struct ib_qp            ibqp;
        union {
                struct mlx5_ib_qp_trans trans_qp;
                struct mlx5_ib_raw_packet_qp raw_packet_qp;
                struct mlx5_ib_rss_qp rss_qp;
                struct mlx5_ib_dct dct;
        };
        struct mlx5_frag_buf    buf;

        struct mlx5_db          db;
        struct mlx5_ib_wq       rq;

        u8                      sq_signal_bits;
        u8                      next_fence;
        struct mlx5_ib_wq       sq;

        /* serialize qp state modifications
         */
        struct mutex            mutex;
        u32                     flags;
        u8                      port;
        u8                      state;
        int                     wq_sig;
        int                     scat_cqe;
        int                     max_inline_data;
        struct mlx5_bf          bf;
        int                     has_rq;

        /* only for user space QPs. For kernel
         * we have it from the bf object
         */
        int                     bfregn;

        int                     create_type;

        struct list_head        qps_list;
        struct list_head        cq_recv_list;
        struct list_head        cq_send_list;
        struct mlx5_rate_limit  rl;
        u32                     underlay_qpn;
        u32                     flags_en;
        /* storage for qp sub type when core qp type is IB_QPT_DRIVER */
        enum ib_qp_type         qp_sub_type;
        /* A flag to indicate if there's a new counter is configured
         * but not take effective
         */
        u32                     counter_pending;
};

struct mlx5_ib_cq_buf {
        struct mlx5_frag_buf_ctrl fbc;
        struct mlx5_frag_buf    frag_buf;
        struct ib_umem          *umem;
        int                     cqe_size;
        int                     nent;
};

enum mlx5_ib_qp_flags {
        MLX5_IB_QP_LSO                          = IB_QP_CREATE_IPOIB_UD_LSO,
        MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK     = IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK,
        MLX5_IB_QP_CROSS_CHANNEL            = IB_QP_CREATE_CROSS_CHANNEL,
        MLX5_IB_QP_MANAGED_SEND             = IB_QP_CREATE_MANAGED_SEND,
        MLX5_IB_QP_MANAGED_RECV             = IB_QP_CREATE_MANAGED_RECV,
        MLX5_IB_QP_SIGNATURE_HANDLING           = 1 << 5,
        /* QP uses 1 as its source QP number */
        MLX5_IB_QP_SQPN_QP1                     = 1 << 6,
        MLX5_IB_QP_CAP_SCATTER_FCS              = 1 << 7,
        MLX5_IB_QP_RSS                          = 1 << 8,
        MLX5_IB_QP_CVLAN_STRIPPING              = 1 << 9,
        MLX5_IB_QP_UNDERLAY                     = 1 << 10,
        MLX5_IB_QP_PCI_WRITE_END_PADDING        = 1 << 11,
        MLX5_IB_QP_TUNNEL_OFFLOAD               = 1 << 12,
        MLX5_IB_QP_PACKET_BASED_CREDIT          = 1 << 13,
};

struct mlx5_umr_wr {
        struct ib_send_wr               wr;
        u64                             virt_addr;
        u64                             offset;
        struct ib_pd                   *pd;
        unsigned int                    page_shift;
        unsigned int                    xlt_size;
        u64                             length;
        int                             access_flags;
        u32                             mkey;
        u8                              ignore_free_state:1;
};

static inline const struct mlx5_umr_wr *umr_wr(const struct ib_send_wr *wr)
{
        return container_of(wr, struct mlx5_umr_wr, wr);
}

struct mlx5_shared_mr_info {
        int mr_id;
        struct ib_umem          *umem;
};

enum mlx5_ib_cq_pr_flags {
        MLX5_IB_CQ_PR_FLAGS_CQE_128_PAD = 1 << 0,
};

struct mlx5_ib_cq {
        struct ib_cq            ibcq;
        struct mlx5_core_cq     mcq;
        struct mlx5_ib_cq_buf   buf;
        struct mlx5_db          db;

        /* serialize access to the CQ
         */
        spinlock_t              lock;

        /* protect resize cq
         */
        struct mutex            resize_mutex;
        struct mlx5_ib_cq_buf  *resize_buf;
        struct ib_umem         *resize_umem;
        int                     cqe_size;
        struct list_head        list_send_qp;
        struct list_head        list_recv_qp;
        u32                     create_flags;
        struct list_head        wc_list;
        enum ib_cq_notify_flags notify_flags;
        struct work_struct      notify_work;
        u16                     private_flags; /* Use mlx5_ib_cq_pr_flags */
};

struct mlx5_ib_wc {
        struct ib_wc wc;
        struct list_head list;
};

struct mlx5_ib_srq {
        struct ib_srq           ibsrq;
        struct mlx5_core_srq    msrq;
        struct mlx5_frag_buf    buf;
        struct mlx5_db          db;
        struct mlx5_frag_buf_ctrl fbc;
        u64                    *wrid;
        /* protect SRQ hanlding
         */
        spinlock_t              lock;
        int                     head;
        int                     tail;
        u16                     wqe_ctr;
        struct ib_umem         *umem;
        /* serialize arming a SRQ
         */
        struct mutex            mutex;
        int                     wq_sig;
};

struct mlx5_ib_xrcd {
        struct ib_xrcd          ibxrcd;
        u32                     xrcdn;
};

enum mlx5_ib_mtt_access_flags {
        MLX5_IB_MTT_READ  = (1 << 0),
        MLX5_IB_MTT_WRITE = (1 << 1),
};

struct mlx5_user_mmap_entry {
        struct rdma_user_mmap_entry rdma_entry;
        u8 mmap_flag;
        u64 address;
        u32 page_idx;
};

struct mlx5_ib_dm {
        struct ib_dm            ibdm;
        phys_addr_t             dev_addr;
        u32                     type;
        size_t                  size;
        union {
                struct {
                        u32     obj_id;
                } icm_dm;
                /* other dm types specific params should be added here */
        };
        struct mlx5_user_mmap_entry mentry;
};

#define MLX5_IB_MTT_PRESENT (MLX5_IB_MTT_READ | MLX5_IB_MTT_WRITE)

#define MLX5_IB_DM_MEMIC_ALLOWED_ACCESS (IB_ACCESS_LOCAL_WRITE   |\
                                         IB_ACCESS_REMOTE_WRITE  |\
                                         IB_ACCESS_REMOTE_READ   |\
                                         IB_ACCESS_REMOTE_ATOMIC |\
                                         IB_ZERO_BASED)

#define MLX5_IB_DM_SW_ICM_ALLOWED_ACCESS (IB_ACCESS_LOCAL_WRITE   |\
                                          IB_ACCESS_REMOTE_WRITE  |\
                                          IB_ACCESS_REMOTE_READ   |\
                                          IB_ZERO_BASED)

#define mlx5_update_odp_stats(mr, counter_name, value)          \
        atomic64_add(value, &((mr)->odp_stats.counter_name))

struct mlx5_ib_mr {
        struct ib_mr            ibmr;
        void                    *descs;
        dma_addr_t              desc_map;
        int                     ndescs;
        int                     data_length;
        int                     meta_ndescs;
        int                     meta_length;
        int                     max_descs;
        int                     desc_size;
        int                     access_mode;
        struct mlx5_core_mkey   mmkey;
        struct ib_umem         *umem;
        struct mlx5_shared_mr_info      *smr_info;
        struct list_head        list;
        int                     order;
        bool                    allocated_from_cache;
        int                     npages;
        struct mlx5_ib_dev     *dev;
        u32 out[MLX5_ST_SZ_DW(create_mkey_out)];
        struct mlx5_core_sig_ctx    *sig;
        void                    *descs_alloc;
        int                     access_flags; /* Needed for rereg MR */

        struct mlx5_ib_mr      *parent;
        /* Needed for IB_MR_TYPE_INTEGRITY */
        struct mlx5_ib_mr      *pi_mr;
        struct mlx5_ib_mr      *klm_mr;
        struct mlx5_ib_mr      *mtt_mr;
        u64                     data_iova;
        u64                     pi_iova;

        /* For ODP and implicit */
        atomic_t                num_deferred_work;
        struct xarray           implicit_children;
        union {
                struct rcu_head rcu;
                struct list_head elm;
                struct work_struct work;
        } odp_destroy;
        struct ib_odp_counters  odp_stats;
        bool                    is_odp_implicit;

        struct mlx5_async_work  cb_work;
};

static inline bool is_odp_mr(struct mlx5_ib_mr *mr)
{
        return IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING) && mr->umem &&
               mr->umem->is_odp;
}

struct mlx5_ib_mw {
        struct ib_mw            ibmw;
        struct mlx5_core_mkey   mmkey;
        int                     ndescs;
};

struct mlx5_ib_devx_mr {
        struct mlx5_core_mkey   mmkey;
        int                     ndescs;
};

struct mlx5_ib_umr_context {
        struct ib_cqe           cqe;
        enum ib_wc_status       status;
        struct completion       done;
};

struct umr_common {
        struct ib_pd    *pd;
        struct ib_cq    *cq;
        struct ib_qp    *qp;
        /* control access to UMR QP
         */
        struct semaphore        sem;
};

enum {
        MLX5_FMR_INVALID,
        MLX5_FMR_VALID,
        MLX5_FMR_BUSY,
};

struct mlx5_cache_ent {
        struct list_head        head;
        /* sync access to the cahce entry
         */
        spinlock_t              lock;


        char                    name[4];
        u32                     order;
        u32                     xlt;
        u32                     access_mode;
        u32                     page;

        u32                     size;
        u32                     cur;
        u32                     miss;
        u32                     limit;

        struct mlx5_ib_dev     *dev;
        struct work_struct      work;
        struct delayed_work     dwork;
        int                     pending;
        struct completion       compl;
};

struct mlx5_mr_cache {
        struct workqueue_struct *wq;
        struct mlx5_cache_ent   ent[MAX_MR_CACHE_ENTRIES];
        int                     stopped;
        struct dentry           *root;
        unsigned long           last_add;
};

struct mlx5_ib_gsi_qp;

struct mlx5_ib_port_resources {
        struct mlx5_ib_resources *devr;
        struct mlx5_ib_gsi_qp *gsi;
        struct work_struct pkey_change_work;
};

struct mlx5_ib_resources {
        struct ib_cq    *c0;
        struct ib_xrcd  *x0;
        struct ib_xrcd  *x1;
        struct ib_pd    *p0;
        struct ib_srq   *s0;
        struct ib_srq   *s1;
        struct mlx5_ib_port_resources ports[2];
        /* Protects changes to the port resources */
        struct mutex    mutex;
};

struct mlx5_ib_counters {
        const char **names;
        size_t *offsets;
        u32 num_q_counters;
        u32 num_cong_counters;
        u32 num_ext_ppcnt_counters;
        u16 set_id;
        bool set_id_valid;
};

struct mlx5_ib_multiport_info;

struct mlx5_ib_multiport {
        struct mlx5_ib_multiport_info *mpi;
        /* To be held when accessing the multiport info */
        spinlock_t mpi_lock;
};

struct mlx5_roce {
        /* Protect mlx5_ib_get_netdev from invoking dev_hold() with a NULL
         * netdev pointer
         */
        rwlock_t                netdev_lock;
        struct net_device       *netdev;
        struct notifier_block   nb;
        atomic_t                tx_port_affinity;
        enum ib_port_state last_port_state;
        struct mlx5_ib_dev      *dev;
        u8                      native_port_num;
};

struct mlx5_ib_port {
        struct mlx5_ib_counters cnts;
        struct mlx5_ib_multiport mp;
        struct mlx5_ib_dbg_cc_params *dbg_cc_params;
        struct mlx5_roce roce;
        struct mlx5_eswitch_rep         *rep;
};

struct mlx5_ib_dbg_param {
        int                     offset;
        struct mlx5_ib_dev      *dev;
        struct dentry           *dentry;
        u8                      port_num;
};

enum mlx5_ib_dbg_cc_types {
        MLX5_IB_DBG_CC_RP_CLAMP_TGT_RATE,
        MLX5_IB_DBG_CC_RP_CLAMP_TGT_RATE_ATI,
        MLX5_IB_DBG_CC_RP_TIME_RESET,
        MLX5_IB_DBG_CC_RP_BYTE_RESET,
        MLX5_IB_DBG_CC_RP_THRESHOLD,
        MLX5_IB_DBG_CC_RP_AI_RATE,
        MLX5_IB_DBG_CC_RP_HAI_RATE,
        MLX5_IB_DBG_CC_RP_MIN_DEC_FAC,
        MLX5_IB_DBG_CC_RP_MIN_RATE,
        MLX5_IB_DBG_CC_RP_RATE_TO_SET_ON_FIRST_CNP,
        MLX5_IB_DBG_CC_RP_DCE_TCP_G,
        MLX5_IB_DBG_CC_RP_DCE_TCP_RTT,
        MLX5_IB_DBG_CC_RP_RATE_REDUCE_MONITOR_PERIOD,
        MLX5_IB_DBG_CC_RP_INITIAL_ALPHA_VALUE,
        MLX5_IB_DBG_CC_RP_GD,
        MLX5_IB_DBG_CC_NP_CNP_DSCP,
        MLX5_IB_DBG_CC_NP_CNP_PRIO_MODE,
        MLX5_IB_DBG_CC_NP_CNP_PRIO,
        MLX5_IB_DBG_CC_MAX,
};

struct mlx5_ib_dbg_cc_params {
        struct dentry                   *root;
        struct mlx5_ib_dbg_param        params[MLX5_IB_DBG_CC_MAX];
};

enum {
        MLX5_MAX_DELAY_DROP_TIMEOUT_MS = 100,
};

struct mlx5_ib_delay_drop {
        struct mlx5_ib_dev     *dev;
        struct work_struct      delay_drop_work;
        /* serialize setting of delay drop */
        struct mutex            lock;
        u32                     timeout;
        bool                    activate;
        atomic_t                events_cnt;
        atomic_t                rqs_cnt;
        struct dentry           *dir_debugfs;
};

enum mlx5_ib_stages {
        MLX5_IB_STAGE_INIT,
        MLX5_IB_STAGE_FLOW_DB,
        MLX5_IB_STAGE_CAPS,
        MLX5_IB_STAGE_NON_DEFAULT_CB,
        MLX5_IB_STAGE_ROCE,
        MLX5_IB_STAGE_SRQ,
        MLX5_IB_STAGE_DEVICE_RESOURCES,
        MLX5_IB_STAGE_DEVICE_NOTIFIER,
        MLX5_IB_STAGE_ODP,
        MLX5_IB_STAGE_COUNTERS,
        MLX5_IB_STAGE_CONG_DEBUGFS,
        MLX5_IB_STAGE_UAR,
        MLX5_IB_STAGE_BFREG,
        MLX5_IB_STAGE_PRE_IB_REG_UMR,
        MLX5_IB_STAGE_WHITELIST_UID,
        MLX5_IB_STAGE_IB_REG,
        MLX5_IB_STAGE_POST_IB_REG_UMR,
        MLX5_IB_STAGE_DELAY_DROP,
        MLX5_IB_STAGE_CLASS_ATTR,
        MLX5_IB_STAGE_MAX,
};

struct mlx5_ib_stage {
        int (*init)(struct mlx5_ib_dev *dev);
        void (*cleanup)(struct mlx5_ib_dev *dev);
};

#define STAGE_CREATE(_stage, _init, _cleanup) \
        .stage[_stage] = {.init = _init, .cleanup = _cleanup}

struct mlx5_ib_profile {
        struct mlx5_ib_stage stage[MLX5_IB_STAGE_MAX];
};

struct mlx5_ib_multiport_info {
        struct list_head list;
        struct mlx5_ib_dev *ibdev;
        struct mlx5_core_dev *mdev;
        struct notifier_block mdev_events;
        struct completion unref_comp;
        u64 sys_image_guid;
        u32 mdev_refcnt;
        bool is_master;
        bool unaffiliate;
};

struct mlx5_ib_flow_action {
        struct ib_flow_action           ib_action;
        union {
                struct {
                        u64                         ib_flags;
                        struct mlx5_accel_esp_xfrm *ctx;
                } esp_aes_gcm;
                struct {
                        struct mlx5_ib_dev *dev;
                        u32 sub_type;
                        union {
                                struct mlx5_modify_hdr *modify_hdr;
                                struct mlx5_pkt_reformat *pkt_reformat;
                        };
                } flow_action_raw;
        };
};

struct mlx5_dm {
        struct mlx5_core_dev *dev;
        /* This lock is used to protect the access to the shared
         * allocation map when concurrent requests by different
         * processes are handled.
         */
        spinlock_t lock;
        DECLARE_BITMAP(memic_alloc_pages, MLX5_MAX_MEMIC_PAGES);
};

struct mlx5_read_counters_attr {
        struct mlx5_fc *hw_cntrs_hndl;
        u64 *out;
        u32 flags;
};

enum mlx5_ib_counters_type {
        MLX5_IB_COUNTERS_FLOW,
};

struct mlx5_ib_mcounters {
        struct ib_counters ibcntrs;
        enum mlx5_ib_counters_type type;
        /* number of counters supported for this counters type */
        u32 counters_num;
        struct mlx5_fc *hw_cntrs_hndl;
        /* read function for this counters type */
        int (*read_counters)(struct ib_device *ibdev,
                             struct mlx5_read_counters_attr *read_attr);
        /* max index set as part of create_flow */
        u32 cntrs_max_index;
        /* number of counters data entries (<description,index> pair) */
        u32 ncounters;
        /* counters data array for descriptions and indexes */
        struct mlx5_ib_flow_counters_desc *counters_data;
        /* protects access to mcounters internal data */
        struct mutex mcntrs_mutex;
};

static inline struct mlx5_ib_mcounters *
to_mcounters(struct ib_counters *ibcntrs)
{
        return container_of(ibcntrs, struct mlx5_ib_mcounters, ibcntrs);
}

int parse_flow_flow_action(struct mlx5_ib_flow_action *maction,
                           bool is_egress,
                           struct mlx5_flow_act *action);
struct mlx5_ib_lb_state {
        /* protect the user_td */
        struct mutex            mutex;
        u32                     user_td;
        int                     qps;
        bool                    enabled;
};

struct mlx5_ib_pf_eq {
        struct notifier_block irq_nb;
        struct mlx5_ib_dev *dev;
        struct mlx5_eq *core;
        struct work_struct work;
        spinlock_t lock; /* Pagefaults spinlock */
        struct workqueue_struct *wq;
        mempool_t *pool;
};

struct mlx5_devx_event_table {
        struct mlx5_nb devx_nb;
        /* serialize updating the event_xa */
        struct mutex event_xa_lock;
        struct xarray event_xa;
};

struct mlx5_var_table {
        /* serialize updating the bitmap */
        struct mutex bitmap_lock;
        unsigned long *bitmap;
        u64 hw_start_addr;
        u32 stride_size;
        u64 num_var_hw_entries;
};

struct mlx5_ib_dev {
        struct ib_device                ib_dev;
        struct mlx5_core_dev            *mdev;
        struct notifier_block           mdev_events;
        int                             num_ports;
        /* serialize update of capability mask
         */
        struct mutex                    cap_mask_mutex;
        u8                              ib_active:1;
        u8                              fill_delay:1;
        u8                              is_rep:1;
        u8                              lag_active:1;
        u8                              wc_support:1;
        struct umr_common               umrc;
        /* sync used page count stats
         */
        struct mlx5_ib_resources        devr;
        struct mlx5_mr_cache            cache;
        struct timer_list               delay_timer;
        /* Prevents soft lock on massive reg MRs */
        struct mutex                    slow_path_mutex;
        struct ib_odp_caps      odp_caps;
        u64                     odp_max_size;
        struct mlx5_ib_pf_eq    odp_pf_eq;

        /*
         * Sleepable RCU that prevents destruction of MRs while they are still
         * being used by a page fault handler.
         */
        struct srcu_struct      odp_srcu;
        struct xarray           odp_mkeys;

        u32                     null_mkey;
        struct mlx5_ib_flow_db  *flow_db;
        /* protect resources needed as part of reset flow */
        spinlock_t              reset_flow_resource_lock;
        struct list_head        qp_list;
        /* Array with num_ports elements */
        struct mlx5_ib_port     *port;
        struct mlx5_sq_bfreg    bfreg;
        struct mlx5_sq_bfreg    wc_bfreg;
        struct mlx5_sq_bfreg    fp_bfreg;
        struct mlx5_ib_delay_drop       delay_drop;
        const struct mlx5_ib_profile    *profile;

        struct mlx5_ib_lb_state         lb;
        u8                      umr_fence;
        struct list_head        ib_dev_list;
        u64                     sys_image_guid;
        struct mlx5_dm          dm;
        u16                     devx_whitelist_uid;
        struct mlx5_srq_table   srq_table;
        struct mlx5_async_ctx   async_ctx;
        struct mlx5_devx_event_table devx_event_table;
        struct mlx5_var_table var_table;

        struct xarray sig_mrs;
};

static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)
{
        return container_of(mcq, struct mlx5_ib_cq, mcq);
}

static inline struct mlx5_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
{
        return container_of(ibxrcd, struct mlx5_ib_xrcd, ibxrcd);
}

static inline struct mlx5_ib_dev *to_mdev(struct ib_device *ibdev)
{
        return container_of(ibdev, struct mlx5_ib_dev, ib_dev);
}

static inline struct mlx5_ib_dev *mlx5_udata_to_mdev(struct ib_udata *udata)
{
        struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context(
                udata, struct mlx5_ib_ucontext, ibucontext);

        return to_mdev(context->ibucontext.device);
}

static inline struct mlx5_ib_cq *to_mcq(struct ib_cq *ibcq)
{
        return container_of(ibcq, struct mlx5_ib_cq, ibcq);
}

static inline struct mlx5_ib_qp *to_mibqp(struct mlx5_core_qp *mqp)
{
        return container_of(mqp, struct mlx5_ib_qp_base, mqp)->container_mibqp;
}

static inline struct mlx5_ib_rwq *to_mibrwq(struct mlx5_core_qp *core_qp)
{
        return container_of(core_qp, struct mlx5_ib_rwq, core_qp);
}

static inline struct mlx5_ib_mr *to_mibmr(struct mlx5_core_mkey *mmkey)
{
        return container_of(mmkey, struct mlx5_ib_mr, mmkey);
}

static inline struct mlx5_ib_pd *to_mpd(struct ib_pd *ibpd)
{
        return container_of(ibpd, struct mlx5_ib_pd, ibpd);
}

static inline struct mlx5_ib_srq *to_msrq(struct ib_srq *ibsrq)
{
        return container_of(ibsrq, struct mlx5_ib_srq, ibsrq);
}

static inline struct mlx5_ib_qp *to_mqp(struct ib_qp *ibqp)
{
        return container_of(ibqp, struct mlx5_ib_qp, ibqp);
}

static inline struct mlx5_ib_rwq *to_mrwq(struct ib_wq *ibwq)
{
        return container_of(ibwq, struct mlx5_ib_rwq, ibwq);
}

static inline struct mlx5_ib_rwq_ind_table *to_mrwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
{
        return container_of(ib_rwq_ind_tbl, struct mlx5_ib_rwq_ind_table, ib_rwq_ind_tbl);
}

static inline struct mlx5_ib_srq *to_mibsrq(struct mlx5_core_srq *msrq)
{
        return container_of(msrq, struct mlx5_ib_srq, msrq);
}

static inline struct mlx5_ib_dm *to_mdm(struct ib_dm *ibdm)
{
        return container_of(ibdm, struct mlx5_ib_dm, ibdm);
}

static inline struct mlx5_ib_mr *to_mmr(struct ib_mr *ibmr)
{
        return container_of(ibmr, struct mlx5_ib_mr, ibmr);
}

static inline struct mlx5_ib_mw *to_mmw(struct ib_mw *ibmw)
{
        return container_of(ibmw, struct mlx5_ib_mw, ibmw);
}

static inline struct mlx5_ib_flow_action *
to_mflow_act(struct ib_flow_action *ibact)
{
        return container_of(ibact, struct mlx5_ib_flow_action, ib_action);
}

static inline struct mlx5_user_mmap_entry *
to_mmmap(struct rdma_user_mmap_entry *rdma_entry)
{
        return container_of(rdma_entry,
                struct mlx5_user_mmap_entry, rdma_entry);
}

int mlx5_ib_db_map_user(struct mlx5_ib_ucontext *context,
                        struct ib_udata *udata, unsigned long virt,
                        struct mlx5_db *db);
void mlx5_ib_db_unmap_user(struct mlx5_ib_ucontext *context, struct mlx5_db *db);
void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
void mlx5_ib_free_srq_wqe(struct mlx5_ib_srq *srq, int wqe_index);
int mlx5_ib_create_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr, u32 flags,
                      struct ib_udata *udata);
int mlx5_ib_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr);
void mlx5_ib_destroy_ah(struct ib_ah *ah, u32 flags);
int mlx5_ib_create_srq(struct ib_srq *srq, struct ib_srq_init_attr *init_attr,
                       struct ib_udata *udata);
int mlx5_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
                       enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
int mlx5_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr);
void mlx5_ib_destroy_srq(struct ib_srq *srq, struct ib_udata *udata);
int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
                          const struct ib_recv_wr **bad_wr);
int mlx5_ib_enable_lb(struct mlx5_ib_dev *dev, bool td, bool qp);
void mlx5_ib_disable_lb(struct mlx5_ib_dev *dev, bool td, bool qp);
struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
                                struct ib_qp_init_attr *init_attr,
                                struct ib_udata *udata);
int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
                      int attr_mask, struct ib_udata *udata);
int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
                     struct ib_qp_init_attr *qp_init_attr);
int mlx5_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata);
void mlx5_ib_drain_sq(struct ib_qp *qp);
void mlx5_ib_drain_rq(struct ib_qp *qp);
int mlx5_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
                      const struct ib_send_wr **bad_wr);
int mlx5_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
                      const struct ib_recv_wr **bad_wr);
int mlx5_ib_read_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index, void *buffer,
                        size_t buflen, size_t *bc);
int mlx5_ib_read_wqe_rq(struct mlx5_ib_qp *qp, int wqe_index, void *buffer,
                        size_t buflen, size_t *bc);
int mlx5_ib_read_wqe_srq(struct mlx5_ib_srq *srq, int wqe_index, void *buffer,
                         size_t buflen, size_t *bc);
int mlx5_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
                      struct ib_udata *udata);
void mlx5_ib_destroy_cq(struct ib_cq *cq, struct ib_udata *udata);
int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
int mlx5_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc);
struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
                                  u64 virt_addr, int access_flags,
                                  struct ib_udata *udata);
int mlx5_ib_advise_mr(struct ib_pd *pd,
                      enum ib_uverbs_advise_mr_advice advice,
                      u32 flags,
                      struct ib_sge *sg_list,
                      u32 num_sge,
                      struct uverbs_attr_bundle *attrs);
struct ib_mw *mlx5_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
                               struct ib_udata *udata);
int mlx5_ib_dealloc_mw(struct ib_mw *mw);
int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages,
                       int page_shift, int flags);
struct mlx5_ib_mr *mlx5_ib_alloc_implicit_mr(struct mlx5_ib_pd *pd,
                                             struct ib_udata *udata,
                                             int access_flags);
void mlx5_ib_free_implicit_mr(struct mlx5_ib_mr *mr);
void mlx5_ib_fence_odp_mr(struct mlx5_ib_mr *mr);
int mlx5_ib_rereg_user_mr(struct ib_mr *ib_mr, int flags, u64 start,
                          u64 length, u64 virt_addr, int access_flags,
                          struct ib_pd *pd, struct ib_udata *udata);
int mlx5_ib_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata);
struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
                               u32 max_num_sg, struct ib_udata *udata);
struct ib_mr *mlx5_ib_alloc_mr_integrity(struct ib_pd *pd,
                                         u32 max_num_sg,
                                         u32 max_num_meta_sg);
int mlx5_ib_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
                      unsigned int *sg_offset);
int mlx5_ib_map_mr_sg_pi(struct ib_mr *ibmr, struct scatterlist *data_sg,
                         int data_sg_nents, unsigned int *data_sg_offset,
                         struct scatterlist *meta_sg, int meta_sg_nents,
                         unsigned int *meta_sg_offset);
int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
                        const struct ib_wc *in_wc, const struct ib_grh *in_grh,
                        const struct ib_mad *in, struct ib_mad *out,
                        size_t *out_mad_size, u16 *out_mad_pkey_index);
struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
                                   struct ib_udata *udata);
int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata);
int mlx5_ib_get_buf_offset(u64 addr, int page_shift, u32 *offset);
int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port);
int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
                                          struct ib_smp *out_mad);
int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
                                         __be64 *sys_image_guid);
int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
                                 u16 *max_pkeys);
int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
                                 u32 *vendor_id);
int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc);
int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid);
int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index,
                            u16 *pkey);
int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
                            union ib_gid *gid);
int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
                            struct ib_port_attr *props);
int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
                       struct ib_port_attr *props);
int mlx5_ib_init_fmr(struct mlx5_ib_dev *dev);
void mlx5_ib_cleanup_fmr(struct mlx5_ib_dev *dev);
void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr,
                        unsigned long max_page_shift,
                        int *count, int *shift,
                        int *ncont, int *order);
void __mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
                            int page_shift, size_t offset, size_t num_pages,
                            __be64 *pas, int access_flags);
void mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
                          int page_shift, __be64 *pas, int access_flags);
void mlx5_ib_copy_pas(u64 *old, u64 *new, int step, int num);
int mlx5_ib_get_cqe_size(struct ib_cq *ibcq);
int mlx5_mr_cache_init(struct mlx5_ib_dev *dev);
int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev);

struct mlx5_ib_mr *mlx5_mr_cache_alloc(struct mlx5_ib_dev *dev, int entry);
void mlx5_mr_cache_free(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr);
int mlx5_mr_cache_invalidate(struct mlx5_ib_mr *mr);

int mlx5_ib_check_mr_status(struct ib_mr *ibmr, u32 check_mask,
                            struct ib_mr_status *mr_status);
struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
                                struct ib_wq_init_attr *init_attr,
                                struct ib_udata *udata);
void mlx5_ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata);
int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
                      u32 wq_attr_mask, struct ib_udata *udata);
struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
                                                      struct ib_rwq_ind_table_init_attr *init_attr,
                                                      struct ib_udata *udata);
int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev,
                               struct ib_ucontext *context,
                               struct ib_dm_alloc_attr *attr,
                               struct uverbs_attr_bundle *attrs);
int mlx5_ib_dealloc_dm(struct ib_dm *ibdm, struct uverbs_attr_bundle *attrs);
struct ib_mr *mlx5_ib_reg_dm_mr(struct ib_pd *pd, struct ib_dm *dm,
                                struct ib_dm_mr_attr *attr,
                                struct uverbs_attr_bundle *attrs);

#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
void mlx5_ib_internal_fill_odp_caps(struct mlx5_ib_dev *dev);
int mlx5_ib_odp_init_one(struct mlx5_ib_dev *ibdev);
void mlx5_ib_odp_cleanup_one(struct mlx5_ib_dev *ibdev);
int __init mlx5_ib_odp_init(void);
void mlx5_ib_odp_cleanup(void);
void mlx5_odp_init_mr_cache_entry(struct mlx5_cache_ent *ent);
void mlx5_odp_populate_xlt(void *xlt, size_t idx, size_t nentries,
                           struct mlx5_ib_mr *mr, int flags);

int mlx5_ib_advise_mr_prefetch(struct ib_pd *pd,
                               enum ib_uverbs_advise_mr_advice advice,
                               u32 flags, struct ib_sge *sg_list, u32 num_sge);
#else /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
static inline void mlx5_ib_internal_fill_odp_caps(struct mlx5_ib_dev *dev)
{
        return;
}

static inline int mlx5_ib_odp_init_one(struct mlx5_ib_dev *ibdev) { return 0; }
static inline void mlx5_ib_odp_cleanup_one(struct mlx5_ib_dev *ibdev) {}
static inline int mlx5_ib_odp_init(void) { return 0; }
static inline void mlx5_ib_odp_cleanup(void)                                {}
static inline void mlx5_odp_init_mr_cache_entry(struct mlx5_cache_ent *ent) {}
static inline void mlx5_odp_populate_xlt(void *xlt, size_t idx, size_t nentries,
                                         struct mlx5_ib_mr *mr, int flags) {}

static inline int
mlx5_ib_advise_mr_prefetch(struct ib_pd *pd,
                           enum ib_uverbs_advise_mr_advice advice, u32 flags,
                           struct ib_sge *sg_list, u32 num_sge)
{
        return -EOPNOTSUPP;
}
#endif /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */

extern const struct mmu_interval_notifier_ops mlx5_mn_ops;

/* Needed for rep profile */
void __mlx5_ib_remove(struct mlx5_ib_dev *dev,
                      const struct mlx5_ib_profile *profile,
                      int stage);
void *__mlx5_ib_add(struct mlx5_ib_dev *dev,
                    const struct mlx5_ib_profile *profile);

int mlx5_ib_get_vf_config(struct ib_device *device, int vf,
                          u8 port, struct ifla_vf_info *info);
int mlx5_ib_set_vf_link_state(struct ib_device *device, int vf,
                              u8 port, int state);
int mlx5_ib_get_vf_stats(struct ib_device *device, int vf,
                         u8 port, struct ifla_vf_stats *stats);
int mlx5_ib_get_vf_guid(struct ib_device *device, int vf, u8 port,
                        struct ifla_vf_guid *node_guid,
                        struct ifla_vf_guid *port_guid);
int mlx5_ib_set_vf_guid(struct ib_device *device, int vf, u8 port,
                        u64 guid, int type);

__be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev,
                               const struct ib_gid_attr *attr);

void mlx5_ib_cleanup_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num);
void mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u8 port_num);

/* GSI QP helper functions */
struct ib_qp *mlx5_ib_gsi_create_qp(struct ib_pd *pd,
                                    struct ib_qp_init_attr *init_attr);
int mlx5_ib_gsi_destroy_qp(struct ib_qp *qp);
int mlx5_ib_gsi_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr,
                          int attr_mask);
int mlx5_ib_gsi_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
                         int qp_attr_mask,
                         struct ib_qp_init_attr *qp_init_attr);
int mlx5_ib_gsi_post_send(struct ib_qp *qp, const struct ib_send_wr *wr,
                          const struct ib_send_wr **bad_wr);
int mlx5_ib_gsi_post_recv(struct ib_qp *qp, const struct ib_recv_wr *wr,
                          const struct ib_recv_wr **bad_wr);
void mlx5_ib_gsi_pkey_change(struct mlx5_ib_gsi_qp *gsi);

int mlx5_ib_generate_wc(struct ib_cq *ibcq, struct ib_wc *wc);

void mlx5_ib_free_bfreg(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi,
                        int bfregn);
struct mlx5_ib_dev *mlx5_ib_get_ibdev_from_mpi(struct mlx5_ib_multiport_info *mpi);
struct mlx5_core_dev *mlx5_ib_get_native_port_mdev(struct mlx5_ib_dev *dev,
                                                   u8 ib_port_num,
                                                   u8 *native_port_num);
void mlx5_ib_put_native_port_mdev(struct mlx5_ib_dev *dev,
                                  u8 port_num);
int mlx5_ib_fill_res_entry(struct sk_buff *msg,
                           struct rdma_restrack_entry *res);
int mlx5_ib_fill_stat_entry(struct sk_buff *msg,
                            struct rdma_restrack_entry *res);

extern const struct uapi_definition mlx5_ib_devx_defs[];
extern const struct uapi_definition mlx5_ib_flow_defs[];

#if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user);
void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid);
void mlx5_ib_devx_init_event_table(struct mlx5_ib_dev *dev);
void mlx5_ib_devx_cleanup_event_table(struct mlx5_ib_dev *dev);
struct mlx5_ib_flow_handler *mlx5_ib_raw_fs_rule_add(
        struct mlx5_ib_dev *dev, struct mlx5_ib_flow_matcher *fs_matcher,
        struct mlx5_flow_context *flow_context,
        struct mlx5_flow_act *flow_act, u32 counter_id,
        void *cmd_in, int inlen, int dest_id, int dest_type);
bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id, int *dest_type);
bool mlx5_ib_devx_is_flow_counter(void *obj, u32 offset, u32 *counter_id);
void mlx5_ib_destroy_flow_action_raw(struct mlx5_ib_flow_action *maction);
#else
static inline int
mlx5_ib_devx_create(struct mlx5_ib_dev *dev,
                           bool is_user) { return -EOPNOTSUPP; }
static inline void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid) {}
static inline void mlx5_ib_devx_init_event_table(struct mlx5_ib_dev *dev) {}
static inline void mlx5_ib_devx_cleanup_event_table(struct mlx5_ib_dev *dev) {}
static inline bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id,
                                             int *dest_type)
{
        return false;
}
static inline void
mlx5_ib_destroy_flow_action_raw(struct mlx5_ib_flow_action *maction)
{
        return;
};
#endif
static inline void init_query_mad(struct ib_smp *mad)
{
        mad->base_version  = 1;
        mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
        mad->class_version = 1;
        mad->method        = IB_MGMT_METHOD_GET;
}

static inline u8 convert_access(int acc)
{
        return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC       : 0) |
               (acc & IB_ACCESS_REMOTE_WRITE  ? MLX5_PERM_REMOTE_WRITE : 0) |
               (acc & IB_ACCESS_REMOTE_READ   ? MLX5_PERM_REMOTE_READ  : 0) |
               (acc & IB_ACCESS_LOCAL_WRITE   ? MLX5_PERM_LOCAL_WRITE  : 0) |
               MLX5_PERM_LOCAL_READ;
}

static inline int is_qp1(enum ib_qp_type qp_type)
{
        return qp_type == MLX5_IB_QPT_HW_GSI;
}

#define MLX5_MAX_UMR_SHIFT 16
#define MLX5_MAX_UMR_PAGES (1 << MLX5_MAX_UMR_SHIFT)

static inline u32 check_cq_create_flags(u32 flags)
{
        /*
         * It returns non-zero value for unsupported CQ
         * create flags, otherwise it returns zero.
         */
        return (flags & ~(IB_UVERBS_CQ_FLAGS_IGNORE_OVERRUN |
                          IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION));
}

static inline int verify_assign_uidx(u8 cqe_version, u32 cmd_uidx,
                                     u32 *user_index)
{
        if (cqe_version) {
                if ((cmd_uidx == MLX5_IB_DEFAULT_UIDX) ||
                    (cmd_uidx & ~MLX5_USER_ASSIGNED_UIDX_MASK))
                        return -EINVAL;
                *user_index = cmd_uidx;
        } else {
                *user_index = MLX5_IB_DEFAULT_UIDX;
        }

        return 0;
}

static inline int get_qp_user_index(struct mlx5_ib_ucontext *ucontext,
                                    struct mlx5_ib_create_qp *ucmd,
                                    int inlen,
                                    u32 *user_index)
{
        u8 cqe_version = ucontext->cqe_version;

        if (field_avail(struct mlx5_ib_create_qp, uidx, inlen) &&
            !cqe_version && (ucmd->uidx == MLX5_IB_DEFAULT_UIDX))
                return 0;

        if (!!(field_avail(struct mlx5_ib_create_qp, uidx, inlen) !=
               !!cqe_version))
                return -EINVAL;

        return verify_assign_uidx(cqe_version, ucmd->uidx, user_index);
}

static inline int get_srq_user_index(struct mlx5_ib_ucontext *ucontext,
                                     struct mlx5_ib_create_srq *ucmd,
                                     int inlen,
                                     u32 *user_index)
{
        u8 cqe_version = ucontext->cqe_version;

        if (field_avail(struct mlx5_ib_create_srq, uidx, inlen) &&
            !cqe_version && (ucmd->uidx == MLX5_IB_DEFAULT_UIDX))
                return 0;

        if (!!(field_avail(struct mlx5_ib_create_srq, uidx, inlen) !=
               !!cqe_version))
                return -EINVAL;

        return verify_assign_uidx(cqe_version, ucmd->uidx, user_index);
}

static inline int get_uars_per_sys_page(struct mlx5_ib_dev *dev, bool lib_support)
{
        return lib_support && MLX5_CAP_GEN(dev->mdev, uar_4k) ?
                                MLX5_UARS_IN_PAGE : 1;
}

static inline int get_num_static_uars(struct mlx5_ib_dev *dev,
                                      struct mlx5_bfreg_info *bfregi)
{
        return get_uars_per_sys_page(dev, bfregi->lib_uar_4k) * bfregi->num_static_sys_pages;
}

unsigned long mlx5_ib_get_xlt_emergency_page(void);
void mlx5_ib_put_xlt_emergency_page(void);

int bfregn_to_uar_index(struct mlx5_ib_dev *dev,
                        struct mlx5_bfreg_info *bfregi, u32 bfregn,
                        bool dyn_bfreg);

int mlx5_ib_qp_set_counter(struct ib_qp *qp, struct rdma_counter *counter);
u16 mlx5_ib_get_counters_id(struct mlx5_ib_dev *dev, u8 port_num);

static inline bool mlx5_ib_can_use_umr(struct mlx5_ib_dev *dev,
                                       bool do_modify_atomic, int access_flags)
{
        if (MLX5_CAP_GEN(dev->mdev, umr_modify_entity_size_disabled))
                return false;

        if (do_modify_atomic &&
            MLX5_CAP_GEN(dev->mdev, atomic) &&
            MLX5_CAP_GEN(dev->mdev, umr_modify_atomic_disabled))
                return false;

        if (access_flags & IB_ACCESS_RELAXED_ORDERING)
                return false;

        return true;
}

int mlx5_ib_enable_driver(struct ib_device *dev);
int mlx5_ib_test_wc(struct mlx5_ib_dev *dev);
#endif /* MLX5_IB_H */