drivers/infiniband/hw/erdma/erdma_verbs.h - linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */

 /* Authors: Cheng Xu <chengyou@linux.alibaba.com> */
 /*          Kai Shen <kaishen@linux.alibaba.com> */
 /* Copyright (c) 2020-2022, Alibaba Group. */

 #ifndef __ERDMA_VERBS_H__
 #define __ERDMA_VERBS_H__

 #include "erdma.h"

 /* RDMA Capability. */
 #define ERDMA_MAX_PD (128 * 1024)
 #define ERDMA_MAX_SEND_WR 4096
 #define ERDMA_MAX_ORD 128
 #define ERDMA_MAX_IRD 128
 #define ERDMA_MAX_SGE_RD 1
 #define ERDMA_MAX_CONTEXT (128 * 1024)
 #define ERDMA_MAX_SEND_SGE 6
 #define ERDMA_MAX_RECV_SGE 1
 #define ERDMA_MAX_INLINE (sizeof(struct erdma_sge) * (ERDMA_MAX_SEND_SGE))
 #define ERDMA_MAX_FRMR_PA 512

 enum {
 	ERDMA_MMAP_IO_NC = 0, /* no cache */
 };

 struct erdma_user_mmap_entry {
 	struct rdma_user_mmap_entry rdma_entry;
 	u64 address;
 	u8 mmap_flag;
 };

 struct erdma_ucontext {
 	struct ib_ucontext ibucontext;

 	u32 sdb_type;
 	u32 sdb_idx;
 	u32 sdb_page_idx;
 	u32 sdb_page_off;
 	u64 sdb;
 	u64 rdb;
 	u64 cdb;

 	struct rdma_user_mmap_entry *sq_db_mmap_entry;
 	struct rdma_user_mmap_entry *rq_db_mmap_entry;
 	struct rdma_user_mmap_entry *cq_db_mmap_entry;

 	/* doorbell records */
 	struct list_head dbrecords_page_list;
 	struct mutex dbrecords_page_mutex;
 };

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

 /*
  * MemoryRegion definition.
  */
 #define ERDMA_MAX_INLINE_MTT_ENTRIES 4
 #define MTT_SIZE(mtt_cnt) (mtt_cnt << 3) /* per mtt takes 8 Bytes. */
 #define ERDMA_MR_MAX_MTT_CNT 524288
 #define ERDMA_MTT_ENTRY_SIZE 8

 #define ERDMA_MR_TYPE_NORMAL 0
 #define ERDMA_MR_TYPE_FRMR 1
 #define ERDMA_MR_TYPE_DMA 2

 #define ERDMA_MR_INLINE_MTT 0
 #define ERDMA_MR_INDIRECT_MTT 1

 #define ERDMA_MR_ACC_LR BIT(0)
 #define ERDMA_MR_ACC_LW BIT(1)
 #define ERDMA_MR_ACC_RR BIT(2)
 #define ERDMA_MR_ACC_RW BIT(3)

 static inline u8 to_erdma_access_flags(int access)
 {
 	return (access & IB_ACCESS_REMOTE_READ ? ERDMA_MR_ACC_RR : 0) |
 	       (access & IB_ACCESS_LOCAL_WRITE ? ERDMA_MR_ACC_LW : 0) |
 	       (access & IB_ACCESS_REMOTE_WRITE ? ERDMA_MR_ACC_RW : 0);
 }

 struct erdma_mem {
 	struct ib_umem *umem;
 	void *mtt_buf;
 	u32 mtt_type;
 	u32 page_size;
 	u32 page_offset;
 	u32 page_cnt;
 	u32 mtt_nents;

 	u64 va;
 	u64 len;

 	u64 mtt_entry[ERDMA_MAX_INLINE_MTT_ENTRIES];
 };

 struct erdma_mr {
 	struct ib_mr ibmr;
 	struct erdma_mem mem;
 	u8 type;
 	u8 access;
 	u8 valid;
 };

 struct erdma_user_dbrecords_page {
 	struct list_head list;
 	struct ib_umem *umem;
 	u64 va;
 	int refcnt;
 };

 struct erdma_uqp {
 	struct erdma_mem sq_mtt;
 	struct erdma_mem rq_mtt;

 	dma_addr_t sq_db_info_dma_addr;
 	dma_addr_t rq_db_info_dma_addr;

 	struct erdma_user_dbrecords_page *user_dbr_page;

 	u32 rq_offset;
 };

 struct erdma_kqp {
 	u16 sq_pi;
 	u16 sq_ci;

 	u16 rq_pi;
 	u16 rq_ci;

 	u64 *swr_tbl;
 	u64 *rwr_tbl;

 	void __iomem *hw_sq_db;
 	void __iomem *hw_rq_db;

 	void *sq_buf;
 	dma_addr_t sq_buf_dma_addr;

 	void *rq_buf;
 	dma_addr_t rq_buf_dma_addr;

 	void *sq_db_info;
 	void *rq_db_info;

 	u8 sig_all;
 };

 enum erdma_qp_state {
 	ERDMA_QP_STATE_IDLE = 0,
 	ERDMA_QP_STATE_RTR = 1,
 	ERDMA_QP_STATE_RTS = 2,
 	ERDMA_QP_STATE_CLOSING = 3,
 	ERDMA_QP_STATE_TERMINATE = 4,
 	ERDMA_QP_STATE_ERROR = 5,
 	ERDMA_QP_STATE_UNDEF = 7,
 	ERDMA_QP_STATE_COUNT = 8
 };

 enum erdma_qp_attr_mask {
 	ERDMA_QP_ATTR_STATE = (1 << 0),
 	ERDMA_QP_ATTR_LLP_HANDLE = (1 << 2),
 	ERDMA_QP_ATTR_ORD = (1 << 3),
 	ERDMA_QP_ATTR_IRD = (1 << 4),
 	ERDMA_QP_ATTR_SQ_SIZE = (1 << 5),
 	ERDMA_QP_ATTR_RQ_SIZE = (1 << 6),
 	ERDMA_QP_ATTR_MPA = (1 << 7)
 };

 struct erdma_qp_attrs {
 	enum erdma_qp_state state;
 	enum erdma_cc_alg cc; /* Congestion control algorithm */
 	u32 sq_size;
 	u32 rq_size;
 	u32 orq_size;
 	u32 irq_size;
 	u32 max_send_sge;
 	u32 max_recv_sge;
 	u32 cookie;
 #define ERDMA_QP_ACTIVE 0
 #define ERDMA_QP_PASSIVE 1
 	u8 qp_type;
 	u8 pd_len;
 };

 struct erdma_qp {
 	struct ib_qp ibqp;
 	struct kref ref;
 	struct completion safe_free;
 	struct erdma_dev *dev;
 	struct erdma_cep *cep;
 	struct rw_semaphore state_lock;

 	union {
 		struct erdma_kqp kern_qp;
 		struct erdma_uqp user_qp;
 	};

 	struct erdma_cq *scq;
 	struct erdma_cq *rcq;

 	struct erdma_qp_attrs attrs;
 	spinlock_t lock;
 };

 struct erdma_kcq_info {
 	void *qbuf;
 	dma_addr_t qbuf_dma_addr;
 	u32 ci;
 	u32 cmdsn;
 	u32 notify_cnt;

 	spinlock_t lock;
 	u8 __iomem *db;
 	u64 *db_record;
 };

 struct erdma_ucq_info {
 	struct erdma_mem qbuf_mtt;
 	struct erdma_user_dbrecords_page *user_dbr_page;
 	dma_addr_t db_info_dma_addr;
 };

 struct erdma_cq {
 	struct ib_cq ibcq;
 	u32 cqn;

 	u32 depth;
 	u32 assoc_eqn;

 	union {
 		struct erdma_kcq_info kern_cq;
 		struct erdma_ucq_info user_cq;
 	};
 };

 #define QP_ID(qp) ((qp)->ibqp.qp_num)

 static inline struct erdma_qp *find_qp_by_qpn(struct erdma_dev *dev, int id)
 {
 	return (struct erdma_qp *)xa_load(&dev->qp_xa, id);
 }

 static inline struct erdma_cq *find_cq_by_cqn(struct erdma_dev *dev, int id)
 {
 	return (struct erdma_cq *)xa_load(&dev->cq_xa, id);
 }

 void erdma_qp_get(struct erdma_qp *qp);
 void erdma_qp_put(struct erdma_qp *qp);
 int erdma_modify_qp_internal(struct erdma_qp *qp, struct erdma_qp_attrs *attrs,
 			     enum erdma_qp_attr_mask mask);
 void erdma_qp_llp_close(struct erdma_qp *qp);
 void erdma_qp_cm_drop(struct erdma_qp *qp);

 static inline struct erdma_ucontext *to_ectx(struct ib_ucontext *ibctx)
 {
 	return container_of(ibctx, struct erdma_ucontext, ibucontext);
 }

 static inline struct erdma_pd *to_epd(struct ib_pd *pd)
 {
 	return container_of(pd, struct erdma_pd, ibpd);
 }

 static inline struct erdma_mr *to_emr(struct ib_mr *ibmr)
 {
 	return container_of(ibmr, struct erdma_mr, ibmr);
 }

 static inline struct erdma_qp *to_eqp(struct ib_qp *qp)
 {
 	return container_of(qp, struct erdma_qp, ibqp);
 }

 static inline struct erdma_cq *to_ecq(struct ib_cq *ibcq)
 {
 	return container_of(ibcq, struct erdma_cq, ibcq);
 }

 static inline struct erdma_user_mmap_entry *
 to_emmap(struct rdma_user_mmap_entry *ibmmap)
 {
 	return container_of(ibmmap, struct erdma_user_mmap_entry, rdma_entry);
 }

 int erdma_alloc_ucontext(struct ib_ucontext *ibctx, struct ib_udata *data);
 void erdma_dealloc_ucontext(struct ib_ucontext *ibctx);
 int erdma_query_device(struct ib_device *dev, struct ib_device_attr *attr,
 		       struct ib_udata *data);
 int erdma_get_port_immutable(struct ib_device *dev, u32 port,
 			     struct ib_port_immutable *ib_port_immutable);
 int erdma_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 		    struct ib_udata *data);
 int erdma_query_port(struct ib_device *dev, u32 port,
 		     struct ib_port_attr *attr);
 int erdma_query_gid(struct ib_device *dev, u32 port, int idx,
 		    union ib_gid *gid);
 int erdma_alloc_pd(struct ib_pd *ibpd, struct ib_udata *data);
 int erdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
 int erdma_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attr,
 		    struct ib_udata *data);
 int erdma_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int mask,
 		   struct ib_qp_init_attr *init_attr);
 int erdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int mask,
 		    struct ib_udata *data);
 int erdma_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata);
 int erdma_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata);
 int erdma_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
 struct ib_mr *erdma_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len,
 				u64 virt, int access, struct ib_udata *udata);
 struct ib_mr *erdma_get_dma_mr(struct ib_pd *ibpd, int rights);
 int erdma_dereg_mr(struct ib_mr *ibmr, struct ib_udata *data);
 int erdma_mmap(struct ib_ucontext *ctx, struct vm_area_struct *vma);
 void erdma_mmap_free(struct rdma_user_mmap_entry *rdma_entry);
 void erdma_qp_get_ref(struct ib_qp *ibqp);
 void erdma_qp_put_ref(struct ib_qp *ibqp);
 struct ib_qp *erdma_get_ibqp(struct ib_device *dev, int id);
 int erdma_post_send(struct ib_qp *ibqp, const struct ib_send_wr *send_wr,
 		    const struct ib_send_wr **bad_send_wr);
 int erdma_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *recv_wr,
 		    const struct ib_recv_wr **bad_recv_wr);
 int erdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 struct ib_mr *erdma_ib_alloc_mr(struct ib_pd *ibpd, enum ib_mr_type mr_type,
 				u32 max_num_sg);
 int erdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
 		    unsigned int *sg_offset);
 void erdma_port_event(struct erdma_dev *dev, enum ib_event_type reason);
 void erdma_set_mtu(struct erdma_dev *dev, u32 mtu);

 #endif
	/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */

	/* Authors: Cheng Xu <chengyou@linux.alibaba.com> */
	/* Kai Shen <kaishen@linux.alibaba.com> */
	/* Copyright (c) 2020-2022, Alibaba Group. */

	#ifndef __ERDMA_VERBS_H__
	#define __ERDMA_VERBS_H__

	#include "erdma.h"

	/* RDMA Capability. */
	#define ERDMA_MAX_PD (128 * 1024)
	#define ERDMA_MAX_SEND_WR 4096
	#define ERDMA_MAX_ORD 128
	#define ERDMA_MAX_IRD 128
	#define ERDMA_MAX_SGE_RD 1
	#define ERDMA_MAX_CONTEXT (128 * 1024)
	#define ERDMA_MAX_SEND_SGE 6
	#define ERDMA_MAX_RECV_SGE 1
	#define ERDMA_MAX_INLINE (sizeof(struct erdma_sge) * (ERDMA_MAX_SEND_SGE))
	#define ERDMA_MAX_FRMR_PA 512

	enum {
	ERDMA_MMAP_IO_NC = 0, /* no cache */
	};

	struct erdma_user_mmap_entry {
	struct rdma_user_mmap_entry rdma_entry;
	u64 address;
	u8 mmap_flag;
	};

	struct erdma_ucontext {
	struct ib_ucontext ibucontext;

	u32 sdb_type;
	u32 sdb_idx;
	u32 sdb_page_idx;
	u32 sdb_page_off;
	u64 sdb;
	u64 rdb;
	u64 cdb;

	struct rdma_user_mmap_entry *sq_db_mmap_entry;
	struct rdma_user_mmap_entry *rq_db_mmap_entry;
	struct rdma_user_mmap_entry *cq_db_mmap_entry;

	/* doorbell records */
	struct list_head dbrecords_page_list;
	struct mutex dbrecords_page_mutex;
	};

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

	/*
	* MemoryRegion definition.
	*/
	#define ERDMA_MAX_INLINE_MTT_ENTRIES 4
	#define MTT_SIZE(mtt_cnt) (mtt_cnt << 3) /* per mtt takes 8 Bytes. */
	#define ERDMA_MR_MAX_MTT_CNT 524288
	#define ERDMA_MTT_ENTRY_SIZE 8

	#define ERDMA_MR_TYPE_NORMAL 0
	#define ERDMA_MR_TYPE_FRMR 1
	#define ERDMA_MR_TYPE_DMA 2

	#define ERDMA_MR_INLINE_MTT 0
	#define ERDMA_MR_INDIRECT_MTT 1

	#define ERDMA_MR_ACC_LR BIT(0)
	#define ERDMA_MR_ACC_LW BIT(1)
	#define ERDMA_MR_ACC_RR BIT(2)
	#define ERDMA_MR_ACC_RW BIT(3)

	static inline u8 to_erdma_access_flags(int access)
	{
	return (access & IB_ACCESS_REMOTE_READ ? ERDMA_MR_ACC_RR : 0) \|
	(access & IB_ACCESS_LOCAL_WRITE ? ERDMA_MR_ACC_LW : 0) \|
	(access & IB_ACCESS_REMOTE_WRITE ? ERDMA_MR_ACC_RW : 0);
	}

	struct erdma_mem {
	struct ib_umem *umem;
	void *mtt_buf;
	u32 mtt_type;
	u32 page_size;
	u32 page_offset;
	u32 page_cnt;
	u32 mtt_nents;

	u64 va;
	u64 len;

	u64 mtt_entry[ERDMA_MAX_INLINE_MTT_ENTRIES];
	};

	struct erdma_mr {
	struct ib_mr ibmr;
	struct erdma_mem mem;
	u8 type;
	u8 access;
	u8 valid;
	};

	struct erdma_user_dbrecords_page {
	struct list_head list;
	struct ib_umem *umem;
	u64 va;
	int refcnt;
	};

	struct erdma_uqp {
	struct erdma_mem sq_mtt;
	struct erdma_mem rq_mtt;

	dma_addr_t sq_db_info_dma_addr;
	dma_addr_t rq_db_info_dma_addr;

	struct erdma_user_dbrecords_page *user_dbr_page;

	u32 rq_offset;
	};

	struct erdma_kqp {
	u16 sq_pi;
	u16 sq_ci;

	u16 rq_pi;
	u16 rq_ci;

	u64 *swr_tbl;
	u64 *rwr_tbl;

	void __iomem *hw_sq_db;
	void __iomem *hw_rq_db;

	void *sq_buf;
	dma_addr_t sq_buf_dma_addr;

	void *rq_buf;
	dma_addr_t rq_buf_dma_addr;

	void *sq_db_info;
	void *rq_db_info;

	u8 sig_all;
	};

	enum erdma_qp_state {
	ERDMA_QP_STATE_IDLE = 0,
	ERDMA_QP_STATE_RTR = 1,
	ERDMA_QP_STATE_RTS = 2,
	ERDMA_QP_STATE_CLOSING = 3,
	ERDMA_QP_STATE_TERMINATE = 4,
	ERDMA_QP_STATE_ERROR = 5,
	ERDMA_QP_STATE_UNDEF = 7,
	ERDMA_QP_STATE_COUNT = 8
	};

	enum erdma_qp_attr_mask {
	ERDMA_QP_ATTR_STATE = (1 << 0),
	ERDMA_QP_ATTR_LLP_HANDLE = (1 << 2),
	ERDMA_QP_ATTR_ORD = (1 << 3),
	ERDMA_QP_ATTR_IRD = (1 << 4),
	ERDMA_QP_ATTR_SQ_SIZE = (1 << 5),
	ERDMA_QP_ATTR_RQ_SIZE = (1 << 6),
	ERDMA_QP_ATTR_MPA = (1 << 7)
	};

	struct erdma_qp_attrs {
	enum erdma_qp_state state;
	enum erdma_cc_alg cc; /* Congestion control algorithm */
	u32 sq_size;
	u32 rq_size;
	u32 orq_size;
	u32 irq_size;
	u32 max_send_sge;
	u32 max_recv_sge;
	u32 cookie;
	#define ERDMA_QP_ACTIVE 0
	#define ERDMA_QP_PASSIVE 1
	u8 qp_type;
	u8 pd_len;
	};

	struct erdma_qp {
	struct ib_qp ibqp;
	struct kref ref;
	struct completion safe_free;
	struct erdma_dev *dev;
	struct erdma_cep *cep;
	struct rw_semaphore state_lock;

	union {
	struct erdma_kqp kern_qp;
	struct erdma_uqp user_qp;
	};

	struct erdma_cq *scq;
	struct erdma_cq *rcq;

	struct erdma_qp_attrs attrs;
	spinlock_t lock;
	};

	struct erdma_kcq_info {
	void *qbuf;
	dma_addr_t qbuf_dma_addr;
	u32 ci;
	u32 cmdsn;
	u32 notify_cnt;

	spinlock_t lock;
	u8 __iomem *db;
	u64 *db_record;
	};

	struct erdma_ucq_info {
	struct erdma_mem qbuf_mtt;
	struct erdma_user_dbrecords_page *user_dbr_page;
	dma_addr_t db_info_dma_addr;
	};

	struct erdma_cq {
	struct ib_cq ibcq;
	u32 cqn;

	u32 depth;
	u32 assoc_eqn;

	union {
	struct erdma_kcq_info kern_cq;
	struct erdma_ucq_info user_cq;
	};
	};

	#define QP_ID(qp) ((qp)->ibqp.qp_num)

	static inline struct erdma_qp find_qp_by_qpn(struct erdma_dev dev, int id)
	{
	return (struct erdma_qp *)xa_load(&dev->qp_xa, id);
	}

	static inline struct erdma_cq find_cq_by_cqn(struct erdma_dev dev, int id)
	{
	return (struct erdma_cq *)xa_load(&dev->cq_xa, id);
	}

	void erdma_qp_get(struct erdma_qp *qp);
	void erdma_qp_put(struct erdma_qp *qp);
	int erdma_modify_qp_internal(struct erdma_qp qp, struct erdma_qp_attrs attrs,
	enum erdma_qp_attr_mask mask);
	void erdma_qp_llp_close(struct erdma_qp *qp);
	void erdma_qp_cm_drop(struct erdma_qp *qp);

	static inline struct erdma_ucontext to_ectx(struct ib_ucontext ibctx)
	{
	return container_of(ibctx, struct erdma_ucontext, ibucontext);
	}

	static inline struct erdma_pd to_epd(struct ib_pd pd)
	{
	return container_of(pd, struct erdma_pd, ibpd);
	}

	static inline struct erdma_mr to_emr(struct ib_mr ibmr)
	{
	return container_of(ibmr, struct erdma_mr, ibmr);
	}

	static inline struct erdma_qp to_eqp(struct ib_qp qp)
	{
	return container_of(qp, struct erdma_qp, ibqp);
	}

	static inline struct erdma_cq to_ecq(struct ib_cq ibcq)
	{
	return container_of(ibcq, struct erdma_cq, ibcq);
	}

	static inline struct erdma_user_mmap_entry *
	to_emmap(struct rdma_user_mmap_entry *ibmmap)
	{
	return container_of(ibmmap, struct erdma_user_mmap_entry, rdma_entry);
	}

	int erdma_alloc_ucontext(struct ib_ucontext ibctx, struct ib_udata data);
	void erdma_dealloc_ucontext(struct ib_ucontext *ibctx);
	int erdma_query_device(struct ib_device dev, struct ib_device_attr attr,
	struct ib_udata *data);
	int erdma_get_port_immutable(struct ib_device *dev, u32 port,
	struct ib_port_immutable *ib_port_immutable);
	int erdma_create_cq(struct ib_cq ibcq, const struct ib_cq_init_attr attr,
	struct ib_udata *data);
	int erdma_query_port(struct ib_device *dev, u32 port,
	struct ib_port_attr *attr);
	int erdma_query_gid(struct ib_device *dev, u32 port, int idx,
	union ib_gid *gid);
	int erdma_alloc_pd(struct ib_pd ibpd, struct ib_udata data);
	int erdma_dealloc_pd(struct ib_pd ibpd, struct ib_udata udata);
	int erdma_create_qp(struct ib_qp ibqp, struct ib_qp_init_attr attr,
	struct ib_udata *data);
	int erdma_query_qp(struct ib_qp ibqp, struct ib_qp_attr attr, int mask,
	struct ib_qp_init_attr *init_attr);
	int erdma_modify_qp(struct ib_qp ibqp, struct ib_qp_attr attr, int mask,
	struct ib_udata *data);
	int erdma_destroy_qp(struct ib_qp ibqp, struct ib_udata udata);
	int erdma_destroy_cq(struct ib_cq ibcq, struct ib_udata udata);
	int erdma_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
	struct ib_mr erdma_reg_user_mr(struct ib_pd ibpd, u64 start, u64 len,
	u64 virt, int access, struct ib_udata *udata);
	struct ib_mr erdma_get_dma_mr(struct ib_pd ibpd, int rights);
	int erdma_dereg_mr(struct ib_mr ibmr, struct ib_udata data);
	int erdma_mmap(struct ib_ucontext ctx, struct vm_area_struct vma);
	void erdma_mmap_free(struct rdma_user_mmap_entry *rdma_entry);
	void erdma_qp_get_ref(struct ib_qp *ibqp);
	void erdma_qp_put_ref(struct ib_qp *ibqp);
	struct ib_qp erdma_get_ibqp(struct ib_device dev, int id);
	int erdma_post_send(struct ib_qp ibqp, const struct ib_send_wr send_wr,
	const struct ib_send_wr **bad_send_wr);
	int erdma_post_recv(struct ib_qp ibqp, const struct ib_recv_wr recv_wr,
	const struct ib_recv_wr **bad_recv_wr);
	int erdma_poll_cq(struct ib_cq ibcq, int num_entries, struct ib_wc wc);
	struct ib_mr erdma_ib_alloc_mr(struct ib_pd ibpd, enum ib_mr_type mr_type,
	u32 max_num_sg);
	int erdma_map_mr_sg(struct ib_mr ibmr, struct scatterlist sg, int sg_nents,
	unsigned int *sg_offset);
	void erdma_port_event(struct erdma_dev *dev, enum ib_event_type reason);
	void erdma_set_mtu(struct erdma_dev *dev, u32 mtu);

	#endif