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IB/uverbs: Add ib_ucontext to uverbs_attr_bundle sent from ioctl and cmd flows
Add ib_ucontext to the uverbs_attr_bundle sent down the iocl and cmd flows as soon as the flow has ib_uobject. In addition, remove rdma_get_ucontext helper function that is only used by ib_umem_get. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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@ -438,6 +438,38 @@ free:
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uverbs_uobject_put(uobj);
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return ERR_PTR(ret);
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}
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struct ib_uobject *_uobj_get_read(enum uverbs_default_objects type,
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u32 object_id,
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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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uobj = rdma_lookup_get_uobject(uobj_get_type(attrs, type), attrs->ufile,
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object_id, UVERBS_LOOKUP_READ);
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if (IS_ERR(uobj))
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return uobj;
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attrs->context = uobj->context;
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return uobj;
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}
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struct ib_uobject *_uobj_get_write(enum uverbs_default_objects type,
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u32 object_id,
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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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uobj = rdma_lookup_get_uobject(uobj_get_type(attrs, type), attrs->ufile,
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object_id, UVERBS_LOOKUP_WRITE);
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if (IS_ERR(uobj))
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return uobj;
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attrs->context = uobj->context;
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return uobj;
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}
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static struct ib_uobject *
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alloc_begin_idr_uobject(const struct uverbs_api_object *obj,
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@ -96,9 +96,13 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr,
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struct scatterlist *sg, *sg_list_start;
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unsigned int gup_flags = FOLL_WRITE;
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context = rdma_get_ucontext(udata);
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if (IS_ERR(context))
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return ERR_CAST(context);
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if (!udata)
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return ERR_PTR(-EIO);
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context = container_of(udata, struct uverbs_attr_bundle, driver_udata)
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->context;
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if (!context)
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return ERR_PTR(-EIO);
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if (dmasync)
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dma_attrs |= DMA_ATTR_WRITE_BARRIER;
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@ -2634,7 +2634,7 @@ void flow_resources_add(struct ib_uflow_resources *uflow_res,
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}
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EXPORT_SYMBOL(flow_resources_add);
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static int kern_spec_to_ib_spec_action(const struct uverbs_attr_bundle *attrs,
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static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs,
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struct ib_uverbs_flow_spec *kern_spec,
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union ib_flow_spec *ib_spec,
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struct ib_uflow_resources *uflow_res)
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@ -213,6 +213,7 @@ static int uverbs_process_idrs_array(struct bundle_priv *pbundle,
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ret = PTR_ERR(attr->uobjects[i]);
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break;
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}
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pbundle->bundle.context = attr->uobjects[i]->context;
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}
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attr->len = i;
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@ -330,6 +331,7 @@ static int uverbs_process_attr(struct bundle_priv *pbundle,
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uattr->data_s64);
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if (IS_ERR(o_attr->uobject))
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return PTR_ERR(o_attr->uobject);
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pbundle->bundle.context = o_attr->uobject->context;
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__set_bit(attr_bkey, pbundle->uobj_finalize);
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if (spec->u.obj.access == UVERBS_ACCESS_NEW) {
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@ -592,6 +594,7 @@ static int ib_uverbs_cmd_verbs(struct ib_uverbs_file *ufile,
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pbundle->method_elm = method_elm;
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pbundle->method_key = attrs_iter.index;
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pbundle->bundle.ufile = ufile;
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pbundle->bundle.context = NULL; /* only valid if bundle has uobject */
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pbundle->radix = &uapi->radix;
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pbundle->radix_slots = slot;
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pbundle->radix_slots_len = radix_tree_chunk_size(&attrs_iter);
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@ -101,30 +101,6 @@ struct ib_ucontext *ib_uverbs_get_ucontext_file(struct ib_uverbs_file *ufile)
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}
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EXPORT_SYMBOL(ib_uverbs_get_ucontext_file);
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/* rdma_get_ucontext - Return the ucontext from a udata
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* @udata: The udata to get the context from
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*
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* This can only be called from within a uapi method that was passed ib_udata
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* as a parameter. It returns the ucontext associated with the udata, or ERR_PTR
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* if the udata is NULL or the ucontext has been disassociated.
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*/
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struct ib_ucontext *rdma_get_ucontext(struct ib_udata *udata)
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{
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if (!udata)
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return ERR_PTR(-EIO);
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/*
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* FIXME: Really all cases that get here with a udata will have
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* already called ib_uverbs_get_ucontext_file, or located a uobject
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* that points to a ucontext. We could store that result in the udata
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* so this function can't fail.
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*/
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return ib_uverbs_get_ucontext_file(
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container_of(udata, struct uverbs_attr_bundle, driver_udata)
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->ufile);
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}
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EXPORT_SYMBOL(rdma_get_ucontext);
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int uverbs_dealloc_mw(struct ib_mw *mw)
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{
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struct ib_pd *pd = mw->pd;
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@ -719,6 +695,7 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf,
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memset(bundle.attr_present, 0, sizeof(bundle.attr_present));
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bundle.ufile = file;
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bundle.context = NULL; /* only valid if bundle has uobject */
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if (!method_elm->is_ex) {
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size_t in_len = hdr.in_words * 4 - sizeof(hdr);
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size_t out_len = hdr.out_words * 4;
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@ -4247,8 +4247,6 @@ void rdma_roce_rescan_device(struct ib_device *ibdev);
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struct ib_ucontext *ib_uverbs_get_ucontext_file(struct ib_uverbs_file *ufile);
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struct ib_ucontext *rdma_get_ucontext(struct ib_udata *udata);
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int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs);
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struct net_device *rdma_alloc_netdev(struct ib_device *device, u8 port_num,
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@ -652,6 +652,7 @@ struct uverbs_attr_bundle {
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struct ib_udata driver_udata;
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struct ib_udata ucore;
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struct ib_uverbs_file *ufile;
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struct ib_ucontext *context;
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DECLARE_BITMAP(attr_present, UVERBS_API_ATTR_BKEY_LEN);
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struct uverbs_attr attrs[];
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};
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@ -48,9 +48,12 @@
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#define uobj_get_type(_attrs, _object) \
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uapi_get_object((_attrs)->ufile->device->uapi, _object)
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struct ib_uobject *_uobj_get_read(enum uverbs_default_objects type,
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u32 object_id,
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struct uverbs_attr_bundle *attrs);
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#define uobj_get_read(_type, _id, _attrs) \
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rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
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_uobj_check_id(_id), UVERBS_LOOKUP_READ)
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_uobj_get_read(_type, _uobj_check_id(_id), _attrs)
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#define ufd_get_read(_type, _fdnum, _attrs) \
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rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
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@ -67,9 +70,12 @@ static inline void *_uobj_get_obj_read(struct ib_uobject *uobj)
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((struct ib_##_object *)_uobj_get_obj_read( \
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uobj_get_read(_type, _id, _attrs)))
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struct ib_uobject *_uobj_get_write(enum uverbs_default_objects type,
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u32 object_id,
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struct uverbs_attr_bundle *attrs);
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#define uobj_get_write(_type, _id, _attrs) \
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rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
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_uobj_check_id(_id), UVERBS_LOOKUP_WRITE)
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_uobj_get_write(_type, _uobj_check_id(_id), _attrs)
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int __uobj_perform_destroy(const struct uverbs_api_object *obj, u32 id,
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const struct uverbs_attr_bundle *attrs);
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@ -123,8 +129,10 @@ __uobj_alloc(const struct uverbs_api_object *obj,
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{
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struct ib_uobject *uobj = rdma_alloc_begin_uobject(obj, attrs->ufile);
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if (!IS_ERR(uobj))
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if (!IS_ERR(uobj)) {
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*ib_dev = uobj->context->device;
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attrs->context = uobj->context;
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}
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return uobj;
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}
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