mlx4_ib.h

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/*
 * Copyright (c) 2006, 2007 Cisco Systems.  All rights reserved.
 * Copyright (c) 2007, 2008 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 MLX4_IB_H
#define MLX4_IB_H

#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/idr.h>

#include <rdma/ib_verbs.h>
#include <rdma/ib_umem.h>
#include <rdma/ib_mad.h>
#include <rdma/ib_sa.h>

#include <linux/mlx4/device.h>
#include <linux/mlx4/doorbell.h>

#define MLX4_IB_DRV_NAME    "mlx4_ib"

#ifdef pr_fmt
#undef pr_fmt
#endif
#define pr_fmt(fmt) "<" MLX4_IB_DRV_NAME "> %s: " fmt, __func__

#define mlx4_ib_warn(ibdev, format, arg...) \
    dev_warn((ibdev)->dma_device, MLX4_IB_DRV_NAME ": " format, ## arg)

enum {
    MLX4_IB_SQ_MIN_WQE_SHIFT = 6,
    MLX4_IB_MAX_HEADROOM     = 2048
};

#define MLX4_IB_SQ_HEADROOM(shift)  ((MLX4_IB_MAX_HEADROOM >> (shift)) + 1)
#define MLX4_IB_SQ_MAX_SPARE        (MLX4_IB_SQ_HEADROOM(MLX4_IB_SQ_MIN_WQE_SHIFT))

/*module param to indicate if SM assigns the alias_GUID*/
extern int mlx4_ib_sm_guid_assign;

struct mlx4_ib_ucontext {
    struct ib_ucontext  ibucontext;
    struct mlx4_uar     uar;
    struct list_head    db_page_list;
    struct mutex        db_page_mutex;
};

struct mlx4_ib_pd {
    struct ib_pd        ibpd;
    u32         pdn;
};

struct mlx4_ib_xrcd {
    struct ib_xrcd      ibxrcd;
    u32         xrcdn;
    struct ib_pd           *pd;
    struct ib_cq           *cq;
};

struct mlx4_ib_cq_buf {
    struct mlx4_buf     buf;
    struct mlx4_mtt     mtt;
};

struct mlx4_ib_cq_resize {
    struct mlx4_ib_cq_buf   buf;
    int         cqe;
};

struct mlx4_ib_cq {
    struct ib_cq        ibcq;
    struct mlx4_cq      mcq;
    struct mlx4_ib_cq_buf   buf;
    struct mlx4_ib_cq_resize *resize_buf;
    struct mlx4_db      db;
    spinlock_t      lock;
    struct mutex        resize_mutex;
    struct ib_umem         *umem;
    struct ib_umem         *resize_umem;
};

struct mlx4_ib_mr {
    struct ib_mr        ibmr;
    struct mlx4_mr      mmr;
    struct ib_umem         *umem;
};

struct mlx4_ib_fast_reg_page_list {
    struct ib_fast_reg_page_list    ibfrpl;
    __be64                 *mapped_page_list;
    dma_addr_t          map;
};

struct mlx4_ib_fmr {
    struct ib_fmr           ibfmr;
    struct mlx4_fmr         mfmr;
};

struct mlx4_ib_wq {
    u64            *wrid;
    spinlock_t      lock;
    int         wqe_cnt;
    int         max_post;
    int         max_gs;
    int         offset;
    int         wqe_shift;
    unsigned        head;
    unsigned        tail;
};

enum mlx4_ib_qp_flags {
    MLX4_IB_QP_LSO = IB_QP_CREATE_IPOIB_UD_LSO,
    MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK = IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK,
    MLX4_IB_SRIOV_TUNNEL_QP = 1 << 30,
    MLX4_IB_SRIOV_SQP = 1 << 31,
};

struct mlx4_ib_gid_entry {
    struct list_head    list;
    union ib_gid        gid;
    int         added;
    u8          port;
};

enum mlx4_ib_qp_type {
    /*
     * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
     * here (and in that order) since the MAD layer uses them as
     * indices into a 2-entry table.
     */
    MLX4_IB_QPT_SMI = IB_QPT_SMI,
    MLX4_IB_QPT_GSI = IB_QPT_GSI,

    MLX4_IB_QPT_RC = IB_QPT_RC,
    MLX4_IB_QPT_UC = IB_QPT_UC,
    MLX4_IB_QPT_UD = IB_QPT_UD,
    MLX4_IB_QPT_RAW_IPV6 = IB_QPT_RAW_IPV6,
    MLX4_IB_QPT_RAW_ETHERTYPE = IB_QPT_RAW_ETHERTYPE,
    MLX4_IB_QPT_RAW_PACKET = IB_QPT_RAW_PACKET,
    MLX4_IB_QPT_XRC_INI = IB_QPT_XRC_INI,
    MLX4_IB_QPT_XRC_TGT = IB_QPT_XRC_TGT,

    MLX4_IB_QPT_PROXY_SMI_OWNER = 1 << 16,
    MLX4_IB_QPT_PROXY_SMI       = 1 << 17,
    MLX4_IB_QPT_PROXY_GSI       = 1 << 18,
    MLX4_IB_QPT_TUN_SMI_OWNER   = 1 << 19,
    MLX4_IB_QPT_TUN_SMI     = 1 << 20,
    MLX4_IB_QPT_TUN_GSI     = 1 << 21,
};

#define MLX4_IB_QPT_ANY_SRIOV   (MLX4_IB_QPT_PROXY_SMI_OWNER | \
    MLX4_IB_QPT_PROXY_SMI | MLX4_IB_QPT_PROXY_GSI | MLX4_IB_QPT_TUN_SMI_OWNER | \
    MLX4_IB_QPT_TUN_SMI | MLX4_IB_QPT_TUN_GSI)

enum mlx4_ib_mad_ifc_flags {
    MLX4_MAD_IFC_IGNORE_MKEY    = 1,
    MLX4_MAD_IFC_IGNORE_BKEY    = 2,
    MLX4_MAD_IFC_IGNORE_KEYS    = (MLX4_MAD_IFC_IGNORE_MKEY |
                       MLX4_MAD_IFC_IGNORE_BKEY),
    MLX4_MAD_IFC_NET_VIEW       = 4,
};

enum {
    MLX4_NUM_TUNNEL_BUFS        = 256,
};

struct mlx4_ib_tunnel_header {
    struct mlx4_av av;
    __be32 remote_qpn;
    __be32 qkey;
    __be16 vlan;
    u8 mac[6];
    __be16 pkey_index;
    u8 reserved[6];
};

struct mlx4_ib_buf {
    void *addr;
    dma_addr_t map;
};

struct mlx4_rcv_tunnel_hdr {
    __be32 flags_src_qp; /* flags[6:5] is defined for VLANs:
                  * 0x0 - no vlan was in the packet
                  * 0x01 - C-VLAN was in the packet */
    u8 g_ml_path; /* gid bit stands for ipv6/4 header in RoCE */
    u8 reserved;
    __be16 pkey_index;
    __be16 sl_vid;
    __be16 slid_mac_47_32;
    __be32 mac_31_0;
};

struct mlx4_ib_proxy_sqp_hdr {
    struct ib_grh grh;
    struct mlx4_rcv_tunnel_hdr tun;
}  __packed;

struct mlx4_ib_qp {
    struct ib_qp        ibqp;
    struct mlx4_qp      mqp;
    struct mlx4_buf     buf;

    struct mlx4_db      db;
    struct mlx4_ib_wq   rq;

    u32         doorbell_qpn;
    __be32          sq_signal_bits;
    unsigned        sq_next_wqe;
    int         sq_max_wqes_per_wr;
    int         sq_spare_wqes;
    struct mlx4_ib_wq   sq;

    enum mlx4_ib_qp_type    mlx4_ib_qp_type;
    struct ib_umem         *umem;
    struct mlx4_mtt     mtt;
    int         buf_size;
    struct mutex        mutex;
    u16         xrcdn;
    u32         flags;
    u8          port;
    u8          alt_port;
    u8          atomic_rd_en;
    u8          resp_depth;
    u8          sq_no_prefetch;
    u8          state;
    int         mlx_type;
    struct list_head    gid_list;
    struct list_head    steering_rules;
    struct mlx4_ib_buf  *sqp_proxy_rcv;

};

struct mlx4_ib_srq {
    struct ib_srq       ibsrq;
    struct mlx4_srq     msrq;
    struct mlx4_buf     buf;
    struct mlx4_db      db;
    u64            *wrid;
    spinlock_t      lock;
    int         head;
    int         tail;
    u16         wqe_ctr;
    struct ib_umem         *umem;
    struct mlx4_mtt     mtt;
    struct mutex        mutex;
};

struct mlx4_ib_ah {
    struct ib_ah        ibah;
    union mlx4_ext_av       av;
};

/****************************************/
/* alias guid support */
/****************************************/
#define NUM_PORT_ALIAS_GUID     2
#define NUM_ALIAS_GUID_IN_REC       8
#define NUM_ALIAS_GUID_REC_IN_PORT  16
#define GUID_REC_SIZE           8
#define NUM_ALIAS_GUID_PER_PORT     128
#define MLX4_NOT_SET_GUID       (0x00LL)
#define MLX4_GUID_FOR_DELETE_VAL    (~(0x00LL))

enum mlx4_guid_alias_rec_status {
    MLX4_GUID_INFO_STATUS_IDLE,
    MLX4_GUID_INFO_STATUS_SET,
    MLX4_GUID_INFO_STATUS_PENDING,
};

enum mlx4_guid_alias_rec_ownership {
    MLX4_GUID_DRIVER_ASSIGN,
    MLX4_GUID_SYSADMIN_ASSIGN,
    MLX4_GUID_NONE_ASSIGN, /*init state of each record*/
};

enum mlx4_guid_alias_rec_method {
    MLX4_GUID_INFO_RECORD_SET   = IB_MGMT_METHOD_SET,
    MLX4_GUID_INFO_RECORD_DELETE    = IB_SA_METHOD_DELETE,
};

struct mlx4_sriov_alias_guid_info_rec_det {
    u8 all_recs[GUID_REC_SIZE * NUM_ALIAS_GUID_IN_REC];
    ib_sa_comp_mask guid_indexes; /*indicates what from the 8 records are valid*/
    enum mlx4_guid_alias_rec_status status; /*indicates the administraively status of the record.*/
    u8 method; /*set or delete*/
    enum mlx4_guid_alias_rec_ownership ownership; /*indicates who assign that alias_guid record*/
};

struct mlx4_sriov_alias_guid_port_rec_det {
    struct mlx4_sriov_alias_guid_info_rec_det all_rec_per_port[NUM_ALIAS_GUID_REC_IN_PORT];
    struct workqueue_struct *wq;
    struct delayed_work alias_guid_work;
    u8 port;
    struct mlx4_sriov_alias_guid *parent;
    struct list_head cb_list;
};

struct mlx4_sriov_alias_guid {
    struct mlx4_sriov_alias_guid_port_rec_det ports_guid[MLX4_MAX_PORTS];
    spinlock_t ag_work_lock;
    struct ib_sa_client *sa_client;
};

struct mlx4_ib_demux_work {
    struct work_struct  work;
    struct mlx4_ib_dev     *dev;
    int         slave;
    int         do_init;
    u8          port;

};

struct mlx4_ib_tun_tx_buf {
    struct mlx4_ib_buf buf;
    struct ib_ah *ah;
};

struct mlx4_ib_demux_pv_qp {
    struct ib_qp *qp;
    enum ib_qp_type proxy_qpt;
    struct mlx4_ib_buf *ring;
    struct mlx4_ib_tun_tx_buf *tx_ring;
    spinlock_t tx_lock;
    unsigned tx_ix_head;
    unsigned tx_ix_tail;
};

enum mlx4_ib_demux_pv_state {
    DEMUX_PV_STATE_DOWN,
    DEMUX_PV_STATE_STARTING,
    DEMUX_PV_STATE_ACTIVE,
    DEMUX_PV_STATE_DOWNING,
};

struct mlx4_ib_demux_pv_ctx {
    int port;
    int slave;
    enum mlx4_ib_demux_pv_state state;
    int has_smi;
    struct ib_device *ib_dev;
    struct ib_cq *cq;
    struct ib_pd *pd;
    struct ib_mr *mr;
    struct work_struct work;
    struct workqueue_struct *wq;
    struct mlx4_ib_demux_pv_qp qp[2];
};

struct mlx4_ib_demux_ctx {
    struct ib_device *ib_dev;
    int port;
    struct workqueue_struct *wq;
    struct workqueue_struct *ud_wq;
    spinlock_t ud_lock;
    __be64 subnet_prefix;
    __be64 guid_cache[128];
    struct mlx4_ib_dev *dev;
    /* the following lock protects both mcg_table and mcg_mgid0_list */
    struct mutex        mcg_table_lock;
    struct rb_root      mcg_table;
    struct list_head    mcg_mgid0_list;
    struct workqueue_struct *mcg_wq;
    struct mlx4_ib_demux_pv_ctx **tun;
    atomic_t tid;
    int    flushing; /* flushing the work queue */
};

struct mlx4_ib_sriov {
    struct mlx4_ib_demux_ctx demux[MLX4_MAX_PORTS];
    struct mlx4_ib_demux_pv_ctx *sqps[MLX4_MAX_PORTS];
    /* when using this spinlock you should use "irq" because
     * it may be called from interrupt context.*/
    spinlock_t going_down_lock;
    int is_going_down;

    struct mlx4_sriov_alias_guid alias_guid;

    /* CM paravirtualization fields */
    struct list_head cm_list;
    spinlock_t id_map_lock;
    struct rb_root sl_id_map;
    struct idr pv_id_table;
};

struct mlx4_ib_iboe {
    spinlock_t      lock;
    struct net_device      *netdevs[MLX4_MAX_PORTS];
    struct notifier_block   nb;
    union ib_gid        gid_table[MLX4_MAX_PORTS][128];
};

struct pkey_mgt {
    u8          virt2phys_pkey[MLX4_MFUNC_MAX][MLX4_MAX_PORTS][MLX4_MAX_PORT_PKEYS];
    u16         phys_pkey_cache[MLX4_MAX_PORTS][MLX4_MAX_PORT_PKEYS];
    struct list_head    pkey_port_list[MLX4_MFUNC_MAX];
    struct kobject         *device_parent[MLX4_MFUNC_MAX];
};

struct mlx4_ib_iov_sysfs_attr {
    void *ctx;
    struct kobject *kobj;
    unsigned long data;
    u32 entry_num;
    char name[15];
    struct device_attribute dentry;
    struct device *dev;
};

struct mlx4_ib_iov_sysfs_attr_ar {
    struct mlx4_ib_iov_sysfs_attr dentries[3 * NUM_ALIAS_GUID_PER_PORT + 1];
};

struct mlx4_ib_iov_port {
    char name[100];
    u8 num;
    struct mlx4_ib_dev *dev;
    struct list_head list;
    struct mlx4_ib_iov_sysfs_attr_ar *dentr_ar;
    struct ib_port_attr attr;
    struct kobject  *cur_port;
    struct kobject  *admin_alias_parent;
    struct kobject  *gids_parent;
    struct kobject  *pkeys_parent;
    struct kobject  *mcgs_parent;
    struct mlx4_ib_iov_sysfs_attr mcg_dentry;
};

struct mlx4_ib_dev {
    struct ib_device    ib_dev;
    struct mlx4_dev        *dev;
    int         num_ports;
    void __iomem           *uar_map;

    struct mlx4_uar     priv_uar;
    u32         priv_pdn;
    MLX4_DECLARE_DOORBELL_LOCK(uar_lock);

    struct ib_mad_agent    *send_agent[MLX4_MAX_PORTS][2];
    struct ib_ah           *sm_ah[MLX4_MAX_PORTS];
    spinlock_t      sm_lock;
    struct mlx4_ib_sriov    sriov;

    struct mutex        cap_mask_mutex;
    bool            ib_active;
    struct mlx4_ib_iboe iboe;
    int         counters[MLX4_MAX_PORTS];
    int            *eq_table;
    int         eq_added;
    struct kobject         *iov_parent;
    struct kobject         *ports_parent;
    struct kobject         *dev_ports_parent[MLX4_MFUNC_MAX];
    struct mlx4_ib_iov_port iov_ports[MLX4_MAX_PORTS];
    struct pkey_mgt     pkeys;
};

struct ib_event_work {
    struct work_struct  work;
    struct mlx4_ib_dev  *ib_dev;
    struct mlx4_eqe     ib_eqe;
};

struct mlx4_ib_qp_tunnel_init_attr {
    struct ib_qp_init_attr init_attr;
    int slave;
    enum ib_qp_type proxy_qp_type;
    u8 port;
};

static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
{
    return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
}

static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
{
    return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
}

static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
{
    return container_of(ibpd, struct mlx4_ib_pd, ibpd);
}

static inline struct mlx4_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
{
    return container_of(ibxrcd, struct mlx4_ib_xrcd, ibxrcd);
}

static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
{
    return container_of(ibcq, struct mlx4_ib_cq, ibcq);
}

static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
{
    return container_of(mcq, struct mlx4_ib_cq, mcq);
}

static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
{
    return container_of(ibmr, struct mlx4_ib_mr, ibmr);
}

static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
{
    return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
}

static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
{
    return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
}
static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
{
    return container_of(ibqp, struct mlx4_ib_qp, ibqp);
}

static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
{
    return container_of(mqp, struct mlx4_ib_qp, mqp);
}

static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
{
    return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
}

static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
{
    return container_of(msrq, struct mlx4_ib_srq, msrq);
}

static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
{
    return container_of(ibah, struct mlx4_ib_ah, ibah);
}

int mlx4_ib_init_sriov(struct mlx4_ib_dev *dev);
void mlx4_ib_close_sriov(struct mlx4_ib_dev *dev);

int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
            struct mlx4_db *db);
void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);

struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
               struct ib_umem *umem);
struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
                  u64 virt_addr, int access_flags,
                  struct ib_udata *udata);
int mlx4_ib_dereg_mr(struct ib_mr *mr);
struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
                    int max_page_list_len);
struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
                                   int page_list_len);
void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);

int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
                struct ib_ucontext *context,
                struct ib_udata *udata);
int mlx4_ib_destroy_cq(struct ib_cq *cq);
int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);

struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
int mlx4_ib_destroy_ah(struct ib_ah *ah);

struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
                  struct ib_srq_init_attr *init_attr,
                  struct ib_udata *udata);
int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
               enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
int mlx4_ib_destroy_srq(struct ib_srq *srq);
void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
              struct ib_recv_wr **bad_wr);

struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
                struct ib_qp_init_attr *init_attr,
                struct ib_udata *udata);
int mlx4_ib_destroy_qp(struct ib_qp *qp);
int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
              int attr_mask, struct ib_udata *udata);
int mlx4_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 mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
              struct ib_send_wr **bad_wr);
int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
              struct ib_recv_wr **bad_wr);

int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int mad_ifc_flags,
         int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
         void *in_mad, void *response_mad);
int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
            struct ib_wc *in_wc, struct ib_grh *in_grh,
            struct ib_mad *in_mad, struct ib_mad *out_mad);
int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);

struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
                  struct ib_fmr_attr *fmr_attr);
int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
             u64 iova);
int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
             struct ib_port_attr *props, int netw_view);
int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
             u16 *pkey, int netw_view);

int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
            union ib_gid *gid, int netw_view);

int mlx4_ib_resolve_grh(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah_attr,
            u8 *mac, int *is_mcast, u8 port);

static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
{
    u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3;

    if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET)
        return 1;

    return !!(ah->av.ib.g_slid & 0x80);
}

int mlx4_ib_mcg_port_init(struct mlx4_ib_demux_ctx *ctx);
void mlx4_ib_mcg_port_cleanup(struct mlx4_ib_demux_ctx *ctx, int destroy_wq);
void clean_vf_mcast(struct mlx4_ib_demux_ctx *ctx, int slave);
int mlx4_ib_mcg_init(void);
void mlx4_ib_mcg_destroy(void);

int mlx4_ib_find_real_gid(struct ib_device *ibdev, u8 port, __be64 guid);

int mlx4_ib_mcg_multiplex_handler(struct ib_device *ibdev, int port, int slave,
                  struct ib_sa_mad *sa_mad);
int mlx4_ib_mcg_demux_handler(struct ib_device *ibdev, int port, int slave,
                  struct ib_sa_mad *mad);

int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
           union ib_gid *gid);

void mlx4_ib_dispatch_event(struct mlx4_ib_dev *dev, u8 port_num,
                enum ib_event_type type);

void mlx4_ib_tunnels_update_work(struct work_struct *work);

int mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u8 port,
              enum ib_qp_type qpt, struct ib_wc *wc,
              struct ib_grh *grh, struct ib_mad *mad);
int mlx4_ib_send_to_wire(struct mlx4_ib_dev *dev, int slave, u8 port,
             enum ib_qp_type dest_qpt, u16 pkey_index, u32 remote_qpn,
             u32 qkey, struct ib_ah_attr *attr, struct ib_mad *mad);
__be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx);

int mlx4_ib_demux_cm_handler(struct ib_device *ibdev, int port, int *slave,
        struct ib_mad *mad);

int mlx4_ib_multiplex_cm_handler(struct ib_device *ibdev, int port, int slave_id,
        struct ib_mad *mad);

void mlx4_ib_cm_paravirt_init(struct mlx4_ib_dev *dev);
void mlx4_ib_cm_paravirt_clean(struct mlx4_ib_dev *dev, int slave_id);

/* alias guid support */
void mlx4_ib_init_alias_guid_work(struct mlx4_ib_dev *dev, int port);
int mlx4_ib_init_alias_guid_service(struct mlx4_ib_dev *dev);
void mlx4_ib_destroy_alias_guid_service(struct mlx4_ib_dev *dev);
void mlx4_ib_invalidate_all_guid_record(struct mlx4_ib_dev *dev, int port);

void mlx4_ib_notify_slaves_on_guid_change(struct mlx4_ib_dev *dev,
                      int block_num,
                      u8 port_num, u8 *p_data);

void mlx4_ib_update_cache_on_guid_change(struct mlx4_ib_dev *dev,
                     int block_num, u8 port_num,
                     u8 *p_data);

int add_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
                struct attribute *attr);
void del_sysfs_port_mcg_attr(struct mlx4_ib_dev *device, int port_num,
                 struct attribute *attr);
ib_sa_comp_mask mlx4_ib_get_aguid_comp_mask_from_ix(int index);

int mlx4_ib_device_register_sysfs(struct mlx4_ib_dev *device) ;

void mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev *device);

__be64 mlx4_ib_gen_node_guid(void);


#endif /* MLX4_IB_H */