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freebsd-nq/sys/dev/qlnx/qlnxr/qlnxr_verbs.h
Hans Petter Selasky b633e08c70 ibcore: Kernel space update based on Linux 5.7-rc1. 
Overview:

This is the first stage of a RDMA stack upgrade introducing kernel
changes only based on Linux 5.7-rc1.

This patch is based on about four main areas of work:
- Update of the IB uobjects system:
  - The memory holding so-called AH, CQ, PD, SRQ and UCONTEXT objects
    is now managed by ibcore. This also require some changes in the
    kernel verbs API. The updated verbs changes are typically about
    initialize and deinitialize objects, and remove allocation and
    free of memory.

- Update of the uverbs IOCTL framework:
  - The parsing and handling of user-space commands has been
    completely refactored to integrate with the updated IB uobjects
    system.

- Various changes and updates to the generic uverbs interfaces in
  device drivers including the new uAPI surface.

- The mlx5_ib_devx.c in mlx5ib and related mlx5 core changes.

Dependencies:

- The mlx4ib driver code has been updated with the minimum changes
needed.

- The mlx5ib driver code has been updated with the minimum changes
needed including DV support.

Compatibility:

- All user-space facing APIs are backwards compatible after this
  change.

- All kernel-space facing RDMA APIs are backwards compatible after
  this change, with exception of ib_create_ah() and ib_destroy_ah()
  which takes a new flag.

- The "ib_device_ops" structure exist, but only contains the driver ID
  and some structure sizes.

Differences from Linux:

- Infiniband drivers must use the INIT_IB_DEVICE_OPS() macro to set
  the sizes needed for allocating various IB objects, when adding
  IB device instances.

Security:

- PRIV_NET_RAW is needed to use raw ethernet transmit features.
- PRIV_DRIVER is needed to use other privileged operations.

Based on upstream Linux, Torvalds (5.7-rc1):
8632e9b5645bbc2331d21d892b0d6961c1a08429

MFC after:	1 week
Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D31149
Sponsored by:	NVIDIA Networking
2021-07-28 13:28:29 +02:00

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/*
* Copyright (c) 2018-2019 Cavium, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef __QLNXR_VERBS_H__
#define __QLNXR_VERBS_H__
extern int qlnxr_iw_query_gid(struct ib_device *,
uint8_t port,
int index,
union ib_gid *gid);
extern int qlnxr_query_gid(struct ib_device *,
u8 port,
int index,
union ib_gid *gid);
extern int qlnxr_create_srq(struct ib_srq *ibsrq,
struct ib_srq_init_attr *,
struct ib_udata *);
extern void qlnxr_destroy_srq(struct ib_srq *,
struct ib_udata *);
extern int qlnxr_modify_srq(struct ib_srq *,
struct ib_srq_attr *,
enum ib_srq_attr_mask,
struct ib_udata *);
extern int qlnxr_query_srq(struct ib_srq *,
struct ib_srq_attr *);
extern int qlnxr_post_srq_recv(struct ib_srq *,
const struct ib_recv_wr *,
const struct ib_recv_wr **bad_recv_wr);
#if __FreeBSD_version < 1102000
extern int qlnxr_query_device(struct ib_device *, struct ib_device_attr *);
#else
extern int qlnxr_query_device(struct ib_device *, struct ib_device_attr *,
struct ib_udata *);
extern int qlnxr_get_port_immutable(struct ib_device *ibdev, u8 port_num,
struct ib_port_immutable *immutable);
#endif
extern int qlnxr_query_port(struct ib_device *,
u8 port,
struct ib_port_attr *props);
extern int qlnxr_modify_port(struct ib_device *,
u8 port,
int mask,
struct ib_port_modify *props);
extern enum rdma_link_layer qlnxr_link_layer(struct ib_device *device,
uint8_t port_num);
extern int qlnxr_alloc_pd(struct ib_pd *ibpd, struct ib_udata *);
extern void qlnxr_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata);
extern int qlnxr_create_cq(struct ib_cq *ibcq,
const struct ib_cq_init_attr *attr,
struct ib_udata *udata);
extern void qlnxr_destroy_cq(struct ib_cq *, struct ib_udata *);
extern int qlnxr_resize_cq(struct ib_cq *,
int cqe,
struct ib_udata *);
extern int qlnxr_poll_cq(struct ib_cq *,
int num_entries,
struct ib_wc *wc);
extern struct ib_qp *qlnxr_create_qp(struct ib_pd *,
struct ib_qp_init_attr *attrs,
struct ib_udata *);
extern int qlnxr_modify_qp(struct ib_qp *,
struct ib_qp_attr *attr,
int attr_mask,
struct ib_udata *udata);
extern int qlnxr_query_qp(struct ib_qp *,
struct ib_qp_attr *qp_attr,
int qp_attr_mask,
struct ib_qp_init_attr *);
extern int qlnxr_destroy_qp(struct ib_qp *, struct ib_udata *);
extern int qlnxr_query_pkey(struct ib_device *,
u8 port,
u16 index,
u16 *pkey);
extern int qlnxr_create_ah(struct ib_ah *ibah,
struct ib_ah_attr *attr, u32 flags,
struct ib_udata *udata);
extern void qlnxr_destroy_ah(struct ib_ah *ibah, u32 flags);
extern int qlnxr_query_ah(struct ib_ah *ibah,
struct ib_ah_attr *attr);
extern int qlnxr_modify_ah(struct ib_ah *ibah,
struct ib_ah_attr *attr);
#if __FreeBSD_version >= 1102000
extern int qlnxr_process_mad(struct ib_device *ibdev,
int process_mad_flags,
u8 port_num,
const struct ib_wc *in_wc,
const struct ib_grh *in_grh,
const struct ib_mad_hdr *mad_hdr,
size_t in_mad_size,
struct ib_mad_hdr *out_mad,
size_t *out_mad_size,
u16 *out_mad_pkey_index);
#else
extern int qlnxr_process_mad(struct ib_device *ibdev,
int process_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);
#endif /* #if __FreeBSD_version >= 1102000 */
extern int qlnxr_post_send(struct ib_qp *,
const struct ib_send_wr *,
const struct ib_send_wr **bad_wr);
extern int qlnxr_post_recv(struct ib_qp *,
const struct ib_recv_wr *,
const struct ib_recv_wr **bad_wr);
extern int qlnxr_arm_cq(struct ib_cq *,
enum ib_cq_notify_flags flags);
extern struct ib_mr *qlnxr_get_dma_mr(struct ib_pd *,
int acc);
#if __FreeBSD_version < 1102000
extern struct ib_mr *qlnxr_reg_kernel_mr(struct ib_pd *,
struct ib_phys_buf *buffer_list,
int num_phys_buf,
int acc,
u64 *iova_start);
#endif /* #if __FreeBSD_version < 1102000 */
extern int qlnxr_dereg_mr(struct ib_mr *, struct ib_udata *);
#if __FreeBSD_version >= 1102000
extern struct ib_mr *qlnxr_reg_user_mr(struct ib_pd *,
u64 start,
u64 length,
u64 virt,
int acc,
struct ib_udata *);
#else
extern struct ib_mr *qlnxr_reg_user_mr(struct ib_pd *,
u64 start,
u64 length,
u64 virt,
int acc,
struct ib_udata *,
int mr_id);
#endif /* #if __FreeBSD_version >= 1102000 */
#if __FreeBSD_version >= 1102000
extern struct ib_mr *qlnxr_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type, u32 max_num_sg,
struct ib_udata *udata);
extern int qlnxr_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg,
int sg_nents, unsigned int *sg_offset);
#else
extern struct ib_mr *qlnxr_alloc_frmr(struct ib_pd *pd,
int max_page_list_len);
extern struct ib_fast_reg_page_list *qlnxr_alloc_frmr_page_list(
struct ib_device *ibdev,
int page_list_len);
extern void qlnxr_free_frmr_page_list(struct ib_fast_reg_page_list *page_list);
#endif /* #if __FreeBSD_version >= 1102000 */
extern int qlnxr_alloc_ucontext(struct ib_ucontext *uctx,
struct ib_udata *udata);
extern void qlnxr_dealloc_ucontext(struct ib_ucontext *ibctx);
extern int qlnxr_mmap(struct ib_ucontext *, struct vm_area_struct *vma);
extern int qlnxr_iw_connect(struct iw_cm_id *cm_id,
struct iw_cm_conn_param *conn_param);
extern int qlnxr_iw_create_listen(struct iw_cm_id *cm_id, int backlog);
void qlnxr_iw_destroy_listen(struct iw_cm_id *cm_id);
extern int qlnxr_iw_accept(struct iw_cm_id *cm_id,
struct iw_cm_conn_param *conn_param);
extern int qlnxr_iw_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
extern void qlnxr_iw_qp_add_ref(struct ib_qp *qp);
extern void qlnxr_iw_qp_rem_ref(struct ib_qp *qp);
extern struct ib_qp *qlnxr_iw_get_qp(struct ib_device *dev, int qpn);
#endif /* #ifndef __QLNXR_VERBS_H__ */
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