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https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
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IB/uverbs: Introduce create/destroy SRQ commands over ioctl
Introduce create/destroy SRQ commands over the ioctl interface to let it be extended to get an asynchronous event FD. Link: https://lore.kernel.org/r/20200519072711.257271-6-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Yishai Hadas
Jason Gunthorpe
parent
175ba58d62
commit
c3eab946ab
@ -36,6 +36,7 @@ ib_uverbs-y := uverbs_main.o uverbs_cmd.o uverbs_marshall.o \
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uverbs_std_types_flow_action.o uverbs_std_types_dm.o \
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uverbs_std_types_mr.o uverbs_std_types_counters.o \
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uverbs_uapi.o uverbs_std_types_device.o \
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uverbs_std_types_async_fd.o
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uverbs_std_types_async_fd.o \
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uverbs_std_types_srq.o
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ib_uverbs-$(CONFIG_INFINIBAND_USER_MEM) += umem.o
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ib_uverbs-$(CONFIG_INFINIBAND_ON_DEMAND_PAGING) += umem_odp.o
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@ -159,6 +159,7 @@ extern const struct uapi_definition uverbs_def_obj_dm[];
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extern const struct uapi_definition uverbs_def_obj_flow_action[];
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extern const struct uapi_definition uverbs_def_obj_intf[];
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extern const struct uapi_definition uverbs_def_obj_mr[];
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extern const struct uapi_definition uverbs_def_obj_srq[];
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extern const struct uapi_definition uverbs_def_write_intf[];
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static inline const struct uverbs_api_write_method *
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@ -142,31 +142,6 @@ static int uverbs_free_wq(struct ib_uobject *uobject,
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return ret;
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}
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static int uverbs_free_srq(struct ib_uobject *uobject,
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enum rdma_remove_reason why,
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struct uverbs_attr_bundle *attrs)
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{
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struct ib_srq *srq = uobject->object;
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struct ib_uevent_object *uevent =
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container_of(uobject, struct ib_uevent_object, uobject);
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enum ib_srq_type srq_type = srq->srq_type;
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int ret;
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ret = ib_destroy_srq_user(srq, &attrs->driver_udata);
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if (ib_is_destroy_retryable(ret, why, uobject))
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return ret;
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if (srq_type == IB_SRQT_XRC) {
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struct ib_usrq_object *us =
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container_of(uevent, struct ib_usrq_object, uevent);
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atomic_dec(&us->uxrcd->refcnt);
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}
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ib_uverbs_release_uevent(uevent);
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return ret;
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}
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static int uverbs_free_xrcd(struct ib_uobject *uobject,
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enum rdma_remove_reason why,
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struct uverbs_attr_bundle *attrs)
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@ -267,11 +242,6 @@ DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_MW,
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UVERBS_TYPE_ALLOC_IDR(uverbs_free_mw),
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&UVERBS_METHOD(UVERBS_METHOD_MW_DESTROY));
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DECLARE_UVERBS_NAMED_OBJECT(
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UVERBS_OBJECT_SRQ,
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UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_usrq_object),
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uverbs_free_srq));
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DECLARE_UVERBS_NAMED_METHOD_DESTROY(
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UVERBS_METHOD_AH_DESTROY,
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UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_AH_HANDLE,
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@ -346,8 +316,6 @@ const struct uapi_definition uverbs_def_obj_intf[] = {
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UAPI_DEF_OBJ_NEEDS_FN(destroy_ah)),
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UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_MW,
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UAPI_DEF_OBJ_NEEDS_FN(dealloc_mw)),
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UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_SRQ,
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UAPI_DEF_OBJ_NEEDS_FN(destroy_srq)),
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UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_FLOW,
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UAPI_DEF_OBJ_NEEDS_FN(destroy_flow)),
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UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_WQ,
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234
drivers/infiniband/core/uverbs_std_types_srq.c
Normal file
234
drivers/infiniband/core/uverbs_std_types_srq.c
Normal file
@ -0,0 +1,234 @@
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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
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/*
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* Copyright (c) 2020, Mellanox Technologies inc. All rights reserved.
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*/
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#include <rdma/uverbs_std_types.h>
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#include "rdma_core.h"
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#include "uverbs.h"
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static int uverbs_free_srq(struct ib_uobject *uobject,
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enum rdma_remove_reason why,
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struct uverbs_attr_bundle *attrs)
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{
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struct ib_srq *srq = uobject->object;
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struct ib_uevent_object *uevent =
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container_of(uobject, struct ib_uevent_object, uobject);
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enum ib_srq_type srq_type = srq->srq_type;
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int ret;
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ret = ib_destroy_srq_user(srq, &attrs->driver_udata);
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if (ib_is_destroy_retryable(ret, why, uobject))
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return ret;
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if (srq_type == IB_SRQT_XRC) {
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struct ib_usrq_object *us =
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container_of(uobject, struct ib_usrq_object,
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uevent.uobject);
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atomic_dec(&us->uxrcd->refcnt);
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}
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ib_uverbs_release_uevent(uevent);
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return ret;
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}
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static int UVERBS_HANDLER(UVERBS_METHOD_SRQ_CREATE)(
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struct uverbs_attr_bundle *attrs)
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{
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struct ib_usrq_object *obj = container_of(
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uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_SRQ_HANDLE),
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typeof(*obj), uevent.uobject);
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struct ib_pd *pd =
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uverbs_attr_get_obj(attrs, UVERBS_ATTR_CREATE_SRQ_PD_HANDLE);
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struct ib_srq_init_attr attr = {};
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struct ib_uobject *xrcd_uobj;
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struct ib_srq *srq;
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u64 user_handle;
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int ret;
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ret = uverbs_copy_from(&attr.attr.max_sge, attrs,
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UVERBS_ATTR_CREATE_SRQ_MAX_SGE);
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if (!ret)
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ret = uverbs_copy_from(&attr.attr.max_wr, attrs,
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UVERBS_ATTR_CREATE_SRQ_MAX_WR);
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if (!ret)
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ret = uverbs_copy_from(&attr.attr.srq_limit, attrs,
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UVERBS_ATTR_CREATE_SRQ_LIMIT);
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if (!ret)
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ret = uverbs_copy_from(&user_handle, attrs,
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UVERBS_ATTR_CREATE_SRQ_USER_HANDLE);
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if (!ret)
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ret = uverbs_get_const(&attr.srq_type, attrs,
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UVERBS_ATTR_CREATE_SRQ_TYPE);
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if (ret)
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return ret;
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if (ib_srq_has_cq(attr.srq_type)) {
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attr.ext.cq = uverbs_attr_get_obj(attrs,
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UVERBS_ATTR_CREATE_SRQ_CQ_HANDLE);
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if (IS_ERR(attr.ext.cq))
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return PTR_ERR(attr.ext.cq);
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}
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switch (attr.srq_type) {
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case IB_UVERBS_SRQT_XRC:
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xrcd_uobj = uverbs_attr_get_uobject(attrs,
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UVERBS_ATTR_CREATE_SRQ_XRCD_HANDLE);
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if (IS_ERR(xrcd_uobj))
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return PTR_ERR(xrcd_uobj);
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attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
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if (!attr.ext.xrc.xrcd)
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return -EINVAL;
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obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
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uobject);
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atomic_inc(&obj->uxrcd->refcnt);
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break;
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case IB_UVERBS_SRQT_TM:
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ret = uverbs_copy_from(&attr.ext.tag_matching.max_num_tags,
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attrs,
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UVERBS_ATTR_CREATE_SRQ_MAX_NUM_TAGS);
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if (ret)
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return ret;
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break;
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case IB_UVERBS_SRQT_BASIC:
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break;
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default:
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return -EINVAL;
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}
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obj->uevent.event_file = ib_uverbs_get_async_event(attrs,
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UVERBS_ATTR_CREATE_SRQ_EVENT_FD);
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INIT_LIST_HEAD(&obj->uevent.event_list);
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attr.event_handler = ib_uverbs_srq_event_handler;
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obj->uevent.uobject.user_handle = user_handle;
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srq = ib_create_srq_user(pd, &attr, obj, &attrs->driver_udata);
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if (IS_ERR(srq)) {
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ret = PTR_ERR(srq);
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goto err;
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}
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obj->uevent.uobject.object = srq;
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uverbs_finalize_uobj_create(attrs, UVERBS_ATTR_CREATE_SRQ_HANDLE);
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ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_SRQ_RESP_MAX_WR,
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&attr.attr.max_wr,
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sizeof(attr.attr.max_wr));
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if (ret)
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return ret;
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ret = uverbs_copy_to(attrs, UVERBS_ATTR_CREATE_SRQ_RESP_MAX_SGE,
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&attr.attr.max_sge,
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sizeof(attr.attr.max_sge));
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if (ret)
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return ret;
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if (attr.srq_type == IB_SRQT_XRC) {
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ret = uverbs_copy_to(attrs,
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UVERBS_ATTR_CREATE_SRQ_RESP_SRQ_NUM,
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&srq->ext.xrc.srq_num,
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sizeof(srq->ext.xrc.srq_num));
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if (ret)
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return ret;
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}
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return 0;
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err:
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if (obj->uevent.event_file)
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uverbs_uobject_put(&obj->uevent.event_file->uobj);
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if (attr.srq_type == IB_SRQT_XRC)
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atomic_dec(&obj->uxrcd->refcnt);
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return ret;
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};
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DECLARE_UVERBS_NAMED_METHOD(
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UVERBS_METHOD_SRQ_CREATE,
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UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_SRQ_HANDLE,
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UVERBS_OBJECT_SRQ,
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UVERBS_ACCESS_NEW,
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UA_MANDATORY),
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UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_SRQ_PD_HANDLE,
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UVERBS_OBJECT_PD,
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UVERBS_ACCESS_READ,
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UA_MANDATORY),
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UVERBS_ATTR_CONST_IN(UVERBS_ATTR_CREATE_SRQ_TYPE,
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enum ib_uverbs_srq_type,
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UA_MANDATORY),
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UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_SRQ_USER_HANDLE,
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UVERBS_ATTR_TYPE(u64),
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UA_MANDATORY),
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UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_SRQ_MAX_WR,
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UVERBS_ATTR_TYPE(u32),
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UA_MANDATORY),
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UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_SRQ_MAX_SGE,
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UVERBS_ATTR_TYPE(u32),
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UA_MANDATORY),
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UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_SRQ_LIMIT,
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UVERBS_ATTR_TYPE(u32),
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UA_MANDATORY),
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UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_SRQ_XRCD_HANDLE,
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UVERBS_OBJECT_XRCD,
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UVERBS_ACCESS_READ,
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UA_OPTIONAL),
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UVERBS_ATTR_IDR(UVERBS_ATTR_CREATE_SRQ_CQ_HANDLE,
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UVERBS_OBJECT_CQ,
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UVERBS_ACCESS_READ,
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UA_OPTIONAL),
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UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CREATE_SRQ_MAX_NUM_TAGS,
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UVERBS_ATTR_TYPE(u32),
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UA_OPTIONAL),
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UVERBS_ATTR_FD(UVERBS_ATTR_CREATE_SRQ_EVENT_FD,
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UVERBS_OBJECT_ASYNC_EVENT,
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UVERBS_ACCESS_READ,
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UA_OPTIONAL),
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UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_SRQ_RESP_MAX_WR,
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UVERBS_ATTR_TYPE(u32),
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UA_MANDATORY),
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UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_SRQ_RESP_MAX_SGE,
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UVERBS_ATTR_TYPE(u32),
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UA_MANDATORY),
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UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CREATE_SRQ_RESP_SRQ_NUM,
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UVERBS_ATTR_TYPE(u32),
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UA_OPTIONAL),
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UVERBS_ATTR_UHW());
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static int UVERBS_HANDLER(UVERBS_METHOD_SRQ_DESTROY)(
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struct uverbs_attr_bundle *attrs)
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{
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struct ib_uobject *uobj =
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uverbs_attr_get_uobject(attrs, UVERBS_ATTR_DESTROY_SRQ_HANDLE);
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struct ib_usrq_object *obj =
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container_of(uobj, struct ib_usrq_object, uevent.uobject);
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struct ib_uverbs_destroy_srq_resp resp = {
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.events_reported = obj->uevent.events_reported
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};
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return uverbs_copy_to(attrs, UVERBS_ATTR_DESTROY_SRQ_RESP, &resp,
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sizeof(resp));
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}
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DECLARE_UVERBS_NAMED_METHOD(
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UVERBS_METHOD_SRQ_DESTROY,
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UVERBS_ATTR_IDR(UVERBS_ATTR_DESTROY_SRQ_HANDLE,
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UVERBS_OBJECT_SRQ,
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UVERBS_ACCESS_DESTROY,
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UA_MANDATORY),
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UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_DESTROY_SRQ_RESP,
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UVERBS_ATTR_TYPE(struct ib_uverbs_destroy_srq_resp),
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UA_MANDATORY));
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DECLARE_UVERBS_NAMED_OBJECT(
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UVERBS_OBJECT_SRQ,
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UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_usrq_object),
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uverbs_free_srq),
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&UVERBS_METHOD(UVERBS_METHOD_SRQ_CREATE),
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&UVERBS_METHOD(UVERBS_METHOD_SRQ_DESTROY)
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);
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const struct uapi_definition uverbs_def_obj_srq[] = {
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UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_SRQ,
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UAPI_DEF_OBJ_NEEDS_FN(destroy_srq)),
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{}
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};
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@ -634,6 +634,7 @@ static const struct uapi_definition uverbs_core_api[] = {
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UAPI_DEF_CHAIN(uverbs_def_obj_flow_action),
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UAPI_DEF_CHAIN(uverbs_def_obj_intf),
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UAPI_DEF_CHAIN(uverbs_def_obj_mr),
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UAPI_DEF_CHAIN(uverbs_def_obj_srq),
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UAPI_DEF_CHAIN(uverbs_def_write_intf),
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{},
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};
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@ -121,6 +121,33 @@ enum uverbs_attrs_destroy_flow_action_esp {
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UVERBS_ATTR_DESTROY_FLOW_ACTION_HANDLE,
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};
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enum uverbs_attrs_create_srq_cmd_attr_ids {
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UVERBS_ATTR_CREATE_SRQ_HANDLE,
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UVERBS_ATTR_CREATE_SRQ_PD_HANDLE,
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UVERBS_ATTR_CREATE_SRQ_XRCD_HANDLE,
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UVERBS_ATTR_CREATE_SRQ_CQ_HANDLE,
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UVERBS_ATTR_CREATE_SRQ_USER_HANDLE,
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UVERBS_ATTR_CREATE_SRQ_MAX_WR,
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UVERBS_ATTR_CREATE_SRQ_MAX_SGE,
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UVERBS_ATTR_CREATE_SRQ_LIMIT,
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UVERBS_ATTR_CREATE_SRQ_MAX_NUM_TAGS,
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UVERBS_ATTR_CREATE_SRQ_TYPE,
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UVERBS_ATTR_CREATE_SRQ_EVENT_FD,
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UVERBS_ATTR_CREATE_SRQ_RESP_MAX_WR,
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UVERBS_ATTR_CREATE_SRQ_RESP_MAX_SGE,
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UVERBS_ATTR_CREATE_SRQ_RESP_SRQ_NUM,
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};
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enum uverbs_attrs_destroy_srq_cmd_attr_ids {
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UVERBS_ATTR_DESTROY_SRQ_HANDLE,
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UVERBS_ATTR_DESTROY_SRQ_RESP,
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};
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enum uverbs_methods_srq {
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UVERBS_METHOD_SRQ_CREATE,
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UVERBS_METHOD_SRQ_DESTROY,
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};
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enum uverbs_methods_cq {
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UVERBS_METHOD_CQ_CREATE,
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UVERBS_METHOD_CQ_DESTROY,
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