1fb7f8973f
Current code uses many different types when dealing with a port of a RDMA device: u8, unsigned int and u32. Switch to u32 to clean up the logic. This allows us to make (at least) the core view consistent and use the same type. Unfortunately not all places can be converted. Many uverbs functions expect port to be u8 so keep those places in order not to break UAPIs. HW/Spec defined values must also not be changed. With the switch to u32 we now can support devices with more than 255 ports. U32_MAX is reserved to make control logic a bit easier to deal with. As a device with U32_MAX ports probably isn't going to happen any time soon this seems like a non issue. When a device with more than 255 ports is created uverbs will report the RDMA device as having 255 ports as this is the max currently supported. The verbs interface is not changed yet because the IBTA spec limits the port size in too many places to be u8 and all applications that relies in verbs won't be able to cope with this change. At this stage, we are extending the interfaces that are using vendor channel solely Once the limitation is lifted mlx5 in switchdev mode will be able to have thousands of SFs created by the device. As the only instance of an RDMA device that reports more than 255 ports will be a representor device and it exposes itself as a RAW Ethernet only device CM/MAD/IPoIB and other ULPs aren't effected by this change and their sysfs/interfaces that are exposes to userspace can remain unchanged. While here cleanup some alignment issues and remove unneeded sanity checks (mainly in rdmavt), Link: https://lore.kernel.org/r/20210301070420.439400-1-leon@kernel.org Signed-off-by: Mark Bloch <mbloch@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
92 lines
3.7 KiB
C
92 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
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/* Authors: Bernard Metzler <bmt@zurich.ibm.com> */
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/* Copyright (c) 2008-2019, IBM Corporation */
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#ifndef _SIW_VERBS_H
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#define _SIW_VERBS_H
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#include <linux/errno.h>
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#include <rdma/iw_cm.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/ib_user_verbs.h>
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#include "siw.h"
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#include "siw_cm.h"
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/*
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* siw_copy_sgl()
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*
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* Copy SGL from RDMA core representation to local
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* representation.
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*/
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static inline void siw_copy_sgl(struct ib_sge *sge, struct siw_sge *siw_sge,
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int num_sge)
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{
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while (num_sge--) {
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siw_sge->laddr = sge->addr;
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siw_sge->length = sge->length;
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siw_sge->lkey = sge->lkey;
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siw_sge++;
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sge++;
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}
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}
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int siw_alloc_ucontext(struct ib_ucontext *base_ctx, struct ib_udata *udata);
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void siw_dealloc_ucontext(struct ib_ucontext *base_ctx);
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int siw_query_port(struct ib_device *base_dev, u32 port,
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struct ib_port_attr *attr);
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int siw_get_port_immutable(struct ib_device *base_dev, u32 port,
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struct ib_port_immutable *port_immutable);
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int siw_query_device(struct ib_device *base_dev, struct ib_device_attr *attr,
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struct ib_udata *udata);
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int siw_create_cq(struct ib_cq *base_cq, const struct ib_cq_init_attr *attr,
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struct ib_udata *udata);
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int siw_query_port(struct ib_device *base_dev, u32 port,
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struct ib_port_attr *attr);
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int siw_query_gid(struct ib_device *base_dev, u32 port, int idx,
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union ib_gid *gid);
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int siw_alloc_pd(struct ib_pd *base_pd, struct ib_udata *udata);
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int siw_dealloc_pd(struct ib_pd *base_pd, struct ib_udata *udata);
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struct ib_qp *siw_create_qp(struct ib_pd *base_pd,
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struct ib_qp_init_attr *attr,
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struct ib_udata *udata);
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int siw_query_qp(struct ib_qp *base_qp, struct ib_qp_attr *qp_attr,
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int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr);
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int siw_verbs_modify_qp(struct ib_qp *base_qp, struct ib_qp_attr *attr,
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int attr_mask, struct ib_udata *udata);
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int siw_destroy_qp(struct ib_qp *base_qp, struct ib_udata *udata);
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int siw_post_send(struct ib_qp *base_qp, const struct ib_send_wr *wr,
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const struct ib_send_wr **bad_wr);
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int siw_post_receive(struct ib_qp *base_qp, const struct ib_recv_wr *wr,
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const struct ib_recv_wr **bad_wr);
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int siw_destroy_cq(struct ib_cq *base_cq, struct ib_udata *udata);
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int siw_poll_cq(struct ib_cq *base_cq, int num_entries, struct ib_wc *wc);
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int siw_req_notify_cq(struct ib_cq *base_cq, enum ib_cq_notify_flags flags);
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struct ib_mr *siw_reg_user_mr(struct ib_pd *base_pd, u64 start, u64 len,
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u64 rnic_va, int rights, struct ib_udata *udata);
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struct ib_mr *siw_alloc_mr(struct ib_pd *base_pd, enum ib_mr_type mr_type,
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u32 max_sge);
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struct ib_mr *siw_get_dma_mr(struct ib_pd *base_pd, int rights);
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int siw_map_mr_sg(struct ib_mr *base_mr, struct scatterlist *sl, int num_sle,
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unsigned int *sg_off);
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int siw_dereg_mr(struct ib_mr *base_mr, struct ib_udata *udata);
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int siw_create_srq(struct ib_srq *base_srq, struct ib_srq_init_attr *attr,
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struct ib_udata *udata);
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int siw_modify_srq(struct ib_srq *base_srq, struct ib_srq_attr *attr,
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enum ib_srq_attr_mask mask, struct ib_udata *udata);
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int siw_query_srq(struct ib_srq *base_srq, struct ib_srq_attr *attr);
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int siw_destroy_srq(struct ib_srq *base_srq, struct ib_udata *udata);
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int siw_post_srq_recv(struct ib_srq *base_srq, const struct ib_recv_wr *wr,
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const struct ib_recv_wr **bad_wr);
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int siw_mmap(struct ib_ucontext *ctx, struct vm_area_struct *vma);
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void siw_mmap_free(struct rdma_user_mmap_entry *rdma_entry);
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void siw_qp_event(struct siw_qp *qp, enum ib_event_type type);
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void siw_cq_event(struct siw_cq *cq, enum ib_event_type type);
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void siw_srq_event(struct siw_srq *srq, enum ib_event_type type);
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void siw_port_event(struct siw_device *dev, u32 port, enum ib_event_type type);
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#endif
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