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3357 lines
80 KiB
C
3357 lines
80 KiB
C
/*
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* Copyright (c) 2005 Topspin Communications. All rights reserved.
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* Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
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* Copyright (c) 2005 PathScale, Inc. All rights reserved.
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* Copyright (c) 2006 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/file.h>
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#include <linux/fs.h>
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#include <linux/slab.h>
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#include <linux/sched.h>
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#include <asm/uaccess.h>
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#include "uverbs.h"
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#include "core_priv.h"
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struct uverbs_lock_class {
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struct lock_class_key key;
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char name[16];
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};
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static struct uverbs_lock_class pd_lock_class = { .name = "PD-uobj" };
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static struct uverbs_lock_class mr_lock_class = { .name = "MR-uobj" };
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static struct uverbs_lock_class mw_lock_class = { .name = "MW-uobj" };
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static struct uverbs_lock_class cq_lock_class = { .name = "CQ-uobj" };
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static struct uverbs_lock_class qp_lock_class = { .name = "QP-uobj" };
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static struct uverbs_lock_class ah_lock_class = { .name = "AH-uobj" };
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static struct uverbs_lock_class srq_lock_class = { .name = "SRQ-uobj" };
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static struct uverbs_lock_class xrcd_lock_class = { .name = "XRCD-uobj" };
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static struct uverbs_lock_class rule_lock_class = { .name = "RULE-uobj" };
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/*
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* The ib_uobject locking scheme is as follows:
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*
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* - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it
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* needs to be held during all idr operations. When an object is
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* looked up, a reference must be taken on the object's kref before
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* dropping this lock.
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*
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* - Each object also has an rwsem. This rwsem must be held for
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* reading while an operation that uses the object is performed.
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* For example, while registering an MR, the associated PD's
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* uobject.mutex must be held for reading. The rwsem must be held
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* for writing while initializing or destroying an object.
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*
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* - In addition, each object has a "live" flag. If this flag is not
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* set, then lookups of the object will fail even if it is found in
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* the idr. This handles a reader that blocks and does not acquire
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* the rwsem until after the object is destroyed. The destroy
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* operation will set the live flag to 0 and then drop the rwsem;
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* this will allow the reader to acquire the rwsem, see that the
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* live flag is 0, and then drop the rwsem and its reference to
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* object. The underlying storage will not be freed until the last
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* reference to the object is dropped.
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*/
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static void init_uobj(struct ib_uobject *uobj, u64 user_handle,
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struct ib_ucontext *context, struct uverbs_lock_class *c)
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{
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uobj->user_handle = user_handle;
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uobj->context = context;
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kref_init(&uobj->ref);
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init_rwsem(&uobj->mutex);
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lockdep_set_class_and_name(&uobj->mutex, &c->key, c->name);
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uobj->live = 0;
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}
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static void release_uobj(struct kref *kref)
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{
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kfree(container_of(kref, struct ib_uobject, ref));
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}
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static void put_uobj(struct ib_uobject *uobj)
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{
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kref_put(&uobj->ref, release_uobj);
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}
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static void put_uobj_read(struct ib_uobject *uobj)
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{
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up_read(&uobj->mutex);
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put_uobj(uobj);
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}
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static void put_uobj_write(struct ib_uobject *uobj)
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{
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up_write(&uobj->mutex);
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put_uobj(uobj);
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}
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static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj)
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{
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int ret;
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idr_preload(GFP_KERNEL);
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spin_lock(&ib_uverbs_idr_lock);
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ret = idr_alloc(idr, uobj, 0, 0, GFP_NOWAIT);
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if (ret >= 0)
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uobj->id = ret;
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spin_unlock(&ib_uverbs_idr_lock);
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idr_preload_end();
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return ret < 0 ? ret : 0;
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}
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void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj)
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{
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spin_lock(&ib_uverbs_idr_lock);
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idr_remove(idr, uobj->id);
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spin_unlock(&ib_uverbs_idr_lock);
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}
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static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id,
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struct ib_ucontext *context)
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{
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struct ib_uobject *uobj;
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spin_lock(&ib_uverbs_idr_lock);
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uobj = idr_find(idr, id);
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if (uobj) {
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if (uobj->context == context)
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kref_get(&uobj->ref);
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else
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uobj = NULL;
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}
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spin_unlock(&ib_uverbs_idr_lock);
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return uobj;
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}
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static struct ib_uobject *idr_read_uobj(struct idr *idr, int id,
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struct ib_ucontext *context, int nested)
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{
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struct ib_uobject *uobj;
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uobj = __idr_get_uobj(idr, id, context);
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if (!uobj)
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return NULL;
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if (nested)
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down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING);
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else
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down_read(&uobj->mutex);
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if (!uobj->live) {
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put_uobj_read(uobj);
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return NULL;
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}
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return uobj;
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}
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static struct ib_uobject *idr_write_uobj(struct idr *idr, int id,
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struct ib_ucontext *context)
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{
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struct ib_uobject *uobj;
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uobj = __idr_get_uobj(idr, id, context);
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if (!uobj)
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return NULL;
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down_write(&uobj->mutex);
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if (!uobj->live) {
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put_uobj_write(uobj);
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return NULL;
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}
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return uobj;
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}
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static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context,
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int nested)
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{
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struct ib_uobject *uobj;
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uobj = idr_read_uobj(idr, id, context, nested);
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return uobj ? uobj->object : NULL;
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}
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static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context)
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{
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return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0);
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}
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static void put_pd_read(struct ib_pd *pd)
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{
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put_uobj_read(pd->uobject);
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}
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static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested)
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{
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return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested);
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}
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static void put_cq_read(struct ib_cq *cq)
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{
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put_uobj_read(cq->uobject);
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}
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static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context)
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{
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return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0);
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}
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static void put_ah_read(struct ib_ah *ah)
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{
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put_uobj_read(ah->uobject);
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}
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static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context)
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{
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return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0);
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}
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static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context)
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{
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struct ib_uobject *uobj;
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uobj = idr_write_uobj(&ib_uverbs_qp_idr, qp_handle, context);
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return uobj ? uobj->object : NULL;
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}
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static void put_qp_read(struct ib_qp *qp)
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{
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put_uobj_read(qp->uobject);
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}
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static void put_qp_write(struct ib_qp *qp)
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{
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put_uobj_write(qp->uobject);
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}
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static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context)
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{
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return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0);
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}
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static void put_srq_read(struct ib_srq *srq)
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{
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put_uobj_read(srq->uobject);
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}
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static struct ib_xrcd *idr_read_xrcd(int xrcd_handle, struct ib_ucontext *context,
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struct ib_uobject **uobj)
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{
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*uobj = idr_read_uobj(&ib_uverbs_xrcd_idr, xrcd_handle, context, 0);
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return *uobj ? (*uobj)->object : NULL;
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}
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static void put_xrcd_read(struct ib_uobject *uobj)
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{
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put_uobj_read(uobj);
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}
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ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
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const char __user *buf,
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int in_len, int out_len)
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{
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struct ib_uverbs_get_context cmd;
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struct ib_uverbs_get_context_resp resp;
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struct ib_udata udata;
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struct ib_device *ibdev = file->device->ib_dev;
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#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
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struct ib_device_attr dev_attr;
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#endif
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struct ib_ucontext *ucontext;
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struct file *filp;
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int ret;
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if (out_len < sizeof resp)
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return -ENOSPC;
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if (copy_from_user(&cmd, buf, sizeof cmd))
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return -EFAULT;
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mutex_lock(&file->mutex);
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if (file->ucontext) {
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ret = -EINVAL;
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goto err;
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}
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INIT_UDATA(&udata, buf + sizeof cmd,
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(unsigned long) cmd.response + sizeof resp,
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in_len - sizeof cmd, out_len - sizeof resp);
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ucontext = ibdev->alloc_ucontext(ibdev, &udata);
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if (IS_ERR(ucontext)) {
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ret = PTR_ERR(ucontext);
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goto err;
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}
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ucontext->device = ibdev;
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INIT_LIST_HEAD(&ucontext->pd_list);
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INIT_LIST_HEAD(&ucontext->mr_list);
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INIT_LIST_HEAD(&ucontext->mw_list);
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INIT_LIST_HEAD(&ucontext->cq_list);
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INIT_LIST_HEAD(&ucontext->qp_list);
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INIT_LIST_HEAD(&ucontext->srq_list);
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INIT_LIST_HEAD(&ucontext->ah_list);
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INIT_LIST_HEAD(&ucontext->xrcd_list);
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INIT_LIST_HEAD(&ucontext->rule_list);
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rcu_read_lock();
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ucontext->tgid = get_task_pid(current->group_leader, PIDTYPE_PID);
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rcu_read_unlock();
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ucontext->closing = 0;
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#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
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ucontext->umem_tree = RB_ROOT;
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init_rwsem(&ucontext->umem_rwsem);
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ucontext->odp_mrs_count = 0;
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INIT_LIST_HEAD(&ucontext->no_private_counters);
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ret = ib_query_device(ibdev, &dev_attr);
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if (ret)
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goto err_free;
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if (!(dev_attr.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING))
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ucontext->invalidate_range = NULL;
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#endif
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resp.num_comp_vectors = file->device->num_comp_vectors;
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ret = get_unused_fd_flags(O_CLOEXEC);
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if (ret < 0)
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goto err_free;
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resp.async_fd = ret;
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filp = ib_uverbs_alloc_event_file(file, 1);
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if (IS_ERR(filp)) {
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ret = PTR_ERR(filp);
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goto err_fd;
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}
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if (copy_to_user((void __user *) (unsigned long) cmd.response,
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&resp, sizeof resp)) {
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ret = -EFAULT;
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goto err_file;
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}
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file->async_file = filp->private_data;
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INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev,
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ib_uverbs_event_handler);
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ret = ib_register_event_handler(&file->event_handler);
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if (ret)
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goto err_file;
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kref_get(&file->async_file->ref);
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kref_get(&file->ref);
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file->ucontext = ucontext;
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fd_install(resp.async_fd, filp);
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mutex_unlock(&file->mutex);
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return in_len;
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err_file:
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fput(filp);
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err_fd:
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put_unused_fd(resp.async_fd);
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err_free:
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put_pid(ucontext->tgid);
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ibdev->dealloc_ucontext(ucontext);
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err:
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mutex_unlock(&file->mutex);
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return ret;
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}
|
|
|
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static void copy_query_dev_fields(struct ib_uverbs_file *file,
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struct ib_uverbs_query_device_resp *resp,
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struct ib_device_attr *attr)
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{
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resp->fw_ver = attr->fw_ver;
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resp->node_guid = file->device->ib_dev->node_guid;
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resp->sys_image_guid = attr->sys_image_guid;
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resp->max_mr_size = attr->max_mr_size;
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resp->page_size_cap = attr->page_size_cap;
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resp->vendor_id = attr->vendor_id;
|
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resp->vendor_part_id = attr->vendor_part_id;
|
|
resp->hw_ver = attr->hw_ver;
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resp->max_qp = attr->max_qp;
|
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resp->max_qp_wr = attr->max_qp_wr;
|
|
resp->device_cap_flags = attr->device_cap_flags;
|
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resp->max_sge = attr->max_sge;
|
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resp->max_sge_rd = attr->max_sge_rd;
|
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resp->max_cq = attr->max_cq;
|
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resp->max_cqe = attr->max_cqe;
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resp->max_mr = attr->max_mr;
|
|
resp->max_pd = attr->max_pd;
|
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resp->max_qp_rd_atom = attr->max_qp_rd_atom;
|
|
resp->max_ee_rd_atom = attr->max_ee_rd_atom;
|
|
resp->max_res_rd_atom = attr->max_res_rd_atom;
|
|
resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom;
|
|
resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom;
|
|
resp->atomic_cap = attr->atomic_cap;
|
|
resp->max_ee = attr->max_ee;
|
|
resp->max_rdd = attr->max_rdd;
|
|
resp->max_mw = attr->max_mw;
|
|
resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp;
|
|
resp->max_raw_ethy_qp = attr->max_raw_ethy_qp;
|
|
resp->max_mcast_grp = attr->max_mcast_grp;
|
|
resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
|
|
resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
|
|
resp->max_ah = attr->max_ah;
|
|
resp->max_fmr = attr->max_fmr;
|
|
resp->max_map_per_fmr = attr->max_map_per_fmr;
|
|
resp->max_srq = attr->max_srq;
|
|
resp->max_srq_wr = attr->max_srq_wr;
|
|
resp->max_srq_sge = attr->max_srq_sge;
|
|
resp->max_pkeys = attr->max_pkeys;
|
|
resp->local_ca_ack_delay = attr->local_ca_ack_delay;
|
|
resp->phys_port_cnt = file->device->ib_dev->phys_port_cnt;
|
|
}
|
|
|
|
ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file,
|
|
const char __user *buf,
|
|
int in_len, int out_len)
|
|
{
|
|
struct ib_uverbs_query_device cmd;
|
|
struct ib_uverbs_query_device_resp resp;
|
|
struct ib_device_attr attr;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
ret = ib_query_device(file->device->ib_dev, &attr);
|
|
if (ret)
|
|
return ret;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
copy_query_dev_fields(file, &resp, &attr);
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp))
|
|
return -EFAULT;
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file,
|
|
const char __user *buf,
|
|
int in_len, int out_len)
|
|
{
|
|
struct ib_uverbs_query_port cmd;
|
|
struct ib_uverbs_query_port_resp resp;
|
|
struct ib_port_attr attr;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr);
|
|
if (ret)
|
|
return ret;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
|
|
resp.state = attr.state;
|
|
resp.max_mtu = attr.max_mtu;
|
|
resp.active_mtu = attr.active_mtu;
|
|
resp.gid_tbl_len = attr.gid_tbl_len;
|
|
resp.port_cap_flags = attr.port_cap_flags;
|
|
resp.max_msg_sz = attr.max_msg_sz;
|
|
resp.bad_pkey_cntr = attr.bad_pkey_cntr;
|
|
resp.qkey_viol_cntr = attr.qkey_viol_cntr;
|
|
resp.pkey_tbl_len = attr.pkey_tbl_len;
|
|
resp.lid = attr.lid;
|
|
resp.sm_lid = attr.sm_lid;
|
|
resp.lmc = attr.lmc;
|
|
resp.max_vl_num = attr.max_vl_num;
|
|
resp.sm_sl = attr.sm_sl;
|
|
resp.subnet_timeout = attr.subnet_timeout;
|
|
resp.init_type_reply = attr.init_type_reply;
|
|
resp.active_width = attr.active_width;
|
|
resp.active_speed = attr.active_speed;
|
|
resp.phys_state = attr.phys_state;
|
|
resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev,
|
|
cmd.port_num);
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp))
|
|
return -EFAULT;
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
|
|
const char __user *buf,
|
|
int in_len, int out_len)
|
|
{
|
|
struct ib_uverbs_alloc_pd cmd;
|
|
struct ib_uverbs_alloc_pd_resp resp;
|
|
struct ib_udata udata;
|
|
struct ib_uobject *uobj;
|
|
struct ib_pd *pd;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd,
|
|
(unsigned long) cmd.response + sizeof resp,
|
|
in_len - sizeof cmd, out_len - sizeof resp);
|
|
|
|
uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
|
|
if (!uobj)
|
|
return -ENOMEM;
|
|
|
|
init_uobj(uobj, 0, file->ucontext, &pd_lock_class);
|
|
down_write(&uobj->mutex);
|
|
|
|
pd = file->device->ib_dev->alloc_pd(file->device->ib_dev,
|
|
file->ucontext, &udata);
|
|
if (IS_ERR(pd)) {
|
|
ret = PTR_ERR(pd);
|
|
goto err;
|
|
}
|
|
|
|
pd->device = file->device->ib_dev;
|
|
pd->uobject = uobj;
|
|
atomic_set(&pd->usecnt, 0);
|
|
|
|
uobj->object = pd;
|
|
ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj);
|
|
if (ret)
|
|
goto err_idr;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
resp.pd_handle = uobj->id;
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp)) {
|
|
ret = -EFAULT;
|
|
goto err_copy;
|
|
}
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_add_tail(&uobj->list, &file->ucontext->pd_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
uobj->live = 1;
|
|
|
|
up_write(&uobj->mutex);
|
|
|
|
return in_len;
|
|
|
|
err_copy:
|
|
idr_remove_uobj(&ib_uverbs_pd_idr, uobj);
|
|
|
|
err_idr:
|
|
ib_dealloc_pd(pd);
|
|
|
|
err:
|
|
put_uobj_write(uobj);
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file,
|
|
const char __user *buf,
|
|
int in_len, int out_len)
|
|
{
|
|
struct ib_uverbs_dealloc_pd cmd;
|
|
struct ib_uobject *uobj;
|
|
int ret;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext);
|
|
if (!uobj)
|
|
return -EINVAL;
|
|
|
|
ret = ib_dealloc_pd(uobj->object);
|
|
if (!ret)
|
|
uobj->live = 0;
|
|
|
|
put_uobj_write(uobj);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
idr_remove_uobj(&ib_uverbs_pd_idr, uobj);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_del(&uobj->list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
put_uobj(uobj);
|
|
|
|
return in_len;
|
|
}
|
|
|
|
struct xrcd_table_entry {
|
|
struct rb_node node;
|
|
struct ib_xrcd *xrcd;
|
|
struct inode *inode;
|
|
};
|
|
|
|
static int xrcd_table_insert(struct ib_uverbs_device *dev,
|
|
struct inode *inode,
|
|
struct ib_xrcd *xrcd)
|
|
{
|
|
struct xrcd_table_entry *entry, *scan;
|
|
struct rb_node **p = &dev->xrcd_tree.rb_node;
|
|
struct rb_node *parent = NULL;
|
|
|
|
entry = kmalloc(sizeof *entry, GFP_KERNEL);
|
|
if (!entry)
|
|
return -ENOMEM;
|
|
|
|
entry->xrcd = xrcd;
|
|
entry->inode = inode;
|
|
|
|
while (*p) {
|
|
parent = *p;
|
|
scan = rb_entry(parent, struct xrcd_table_entry, node);
|
|
|
|
if (inode < scan->inode) {
|
|
p = &(*p)->rb_left;
|
|
} else if (inode > scan->inode) {
|
|
p = &(*p)->rb_right;
|
|
} else {
|
|
kfree(entry);
|
|
return -EEXIST;
|
|
}
|
|
}
|
|
|
|
rb_link_node(&entry->node, parent, p);
|
|
rb_insert_color(&entry->node, &dev->xrcd_tree);
|
|
igrab(inode);
|
|
return 0;
|
|
}
|
|
|
|
static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
|
|
struct inode *inode)
|
|
{
|
|
struct xrcd_table_entry *entry;
|
|
struct rb_node *p = dev->xrcd_tree.rb_node;
|
|
|
|
while (p) {
|
|
entry = rb_entry(p, struct xrcd_table_entry, node);
|
|
|
|
if (inode < entry->inode)
|
|
p = p->rb_left;
|
|
else if (inode > entry->inode)
|
|
p = p->rb_right;
|
|
else
|
|
return entry;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
|
|
{
|
|
struct xrcd_table_entry *entry;
|
|
|
|
entry = xrcd_table_search(dev, inode);
|
|
if (!entry)
|
|
return NULL;
|
|
|
|
return entry->xrcd;
|
|
}
|
|
|
|
static void xrcd_table_delete(struct ib_uverbs_device *dev,
|
|
struct inode *inode)
|
|
{
|
|
struct xrcd_table_entry *entry;
|
|
|
|
entry = xrcd_table_search(dev, inode);
|
|
if (entry) {
|
|
iput(inode);
|
|
rb_erase(&entry->node, &dev->xrcd_tree);
|
|
kfree(entry);
|
|
}
|
|
}
|
|
|
|
ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_open_xrcd cmd;
|
|
struct ib_uverbs_open_xrcd_resp resp;
|
|
struct ib_udata udata;
|
|
struct ib_uxrcd_object *obj;
|
|
struct ib_xrcd *xrcd = NULL;
|
|
struct fd f = {NULL, 0};
|
|
struct inode *inode = NULL;
|
|
int ret = 0;
|
|
int new_xrcd = 0;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd,
|
|
(unsigned long) cmd.response + sizeof resp,
|
|
in_len - sizeof cmd, out_len - sizeof resp);
|
|
|
|
mutex_lock(&file->device->xrcd_tree_mutex);
|
|
|
|
if (cmd.fd != -1) {
|
|
/* search for file descriptor */
|
|
f = fdget(cmd.fd);
|
|
if (!f.file) {
|
|
ret = -EBADF;
|
|
goto err_tree_mutex_unlock;
|
|
}
|
|
|
|
inode = file_inode(f.file);
|
|
xrcd = find_xrcd(file->device, inode);
|
|
if (!xrcd && !(cmd.oflags & O_CREAT)) {
|
|
/* no file descriptor. Need CREATE flag */
|
|
ret = -EAGAIN;
|
|
goto err_tree_mutex_unlock;
|
|
}
|
|
|
|
if (xrcd && cmd.oflags & O_EXCL) {
|
|
ret = -EINVAL;
|
|
goto err_tree_mutex_unlock;
|
|
}
|
|
}
|
|
|
|
obj = kmalloc(sizeof *obj, GFP_KERNEL);
|
|
if (!obj) {
|
|
ret = -ENOMEM;
|
|
goto err_tree_mutex_unlock;
|
|
}
|
|
|
|
init_uobj(&obj->uobject, 0, file->ucontext, &xrcd_lock_class);
|
|
|
|
down_write(&obj->uobject.mutex);
|
|
|
|
if (!xrcd) {
|
|
xrcd = file->device->ib_dev->alloc_xrcd(file->device->ib_dev,
|
|
file->ucontext, &udata);
|
|
if (IS_ERR(xrcd)) {
|
|
ret = PTR_ERR(xrcd);
|
|
goto err;
|
|
}
|
|
|
|
xrcd->inode = inode;
|
|
xrcd->device = file->device->ib_dev;
|
|
atomic_set(&xrcd->usecnt, 0);
|
|
mutex_init(&xrcd->tgt_qp_mutex);
|
|
INIT_LIST_HEAD(&xrcd->tgt_qp_list);
|
|
new_xrcd = 1;
|
|
}
|
|
|
|
atomic_set(&obj->refcnt, 0);
|
|
obj->uobject.object = xrcd;
|
|
ret = idr_add_uobj(&ib_uverbs_xrcd_idr, &obj->uobject);
|
|
if (ret)
|
|
goto err_idr;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
resp.xrcd_handle = obj->uobject.id;
|
|
|
|
if (inode) {
|
|
if (new_xrcd) {
|
|
/* create new inode/xrcd table entry */
|
|
ret = xrcd_table_insert(file->device, inode, xrcd);
|
|
if (ret)
|
|
goto err_insert_xrcd;
|
|
}
|
|
atomic_inc(&xrcd->usecnt);
|
|
}
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp)) {
|
|
ret = -EFAULT;
|
|
goto err_copy;
|
|
}
|
|
|
|
if (f.file)
|
|
fdput(f);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
obj->uobject.live = 1;
|
|
up_write(&obj->uobject.mutex);
|
|
|
|
mutex_unlock(&file->device->xrcd_tree_mutex);
|
|
return in_len;
|
|
|
|
err_copy:
|
|
if (inode) {
|
|
if (new_xrcd)
|
|
xrcd_table_delete(file->device, inode);
|
|
atomic_dec(&xrcd->usecnt);
|
|
}
|
|
|
|
err_insert_xrcd:
|
|
idr_remove_uobj(&ib_uverbs_xrcd_idr, &obj->uobject);
|
|
|
|
err_idr:
|
|
ib_dealloc_xrcd(xrcd);
|
|
|
|
err:
|
|
put_uobj_write(&obj->uobject);
|
|
|
|
err_tree_mutex_unlock:
|
|
if (f.file)
|
|
fdput(f);
|
|
|
|
mutex_unlock(&file->device->xrcd_tree_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_close_xrcd cmd;
|
|
struct ib_uobject *uobj;
|
|
struct ib_xrcd *xrcd = NULL;
|
|
struct inode *inode = NULL;
|
|
struct ib_uxrcd_object *obj;
|
|
int live;
|
|
int ret = 0;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
mutex_lock(&file->device->xrcd_tree_mutex);
|
|
uobj = idr_write_uobj(&ib_uverbs_xrcd_idr, cmd.xrcd_handle, file->ucontext);
|
|
if (!uobj) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
xrcd = uobj->object;
|
|
inode = xrcd->inode;
|
|
obj = container_of(uobj, struct ib_uxrcd_object, uobject);
|
|
if (atomic_read(&obj->refcnt)) {
|
|
put_uobj_write(uobj);
|
|
ret = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
if (!inode || atomic_dec_and_test(&xrcd->usecnt)) {
|
|
ret = ib_dealloc_xrcd(uobj->object);
|
|
if (!ret)
|
|
uobj->live = 0;
|
|
}
|
|
|
|
live = uobj->live;
|
|
if (inode && ret)
|
|
atomic_inc(&xrcd->usecnt);
|
|
|
|
put_uobj_write(uobj);
|
|
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (inode && !live)
|
|
xrcd_table_delete(file->device, inode);
|
|
|
|
idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj);
|
|
mutex_lock(&file->mutex);
|
|
list_del(&uobj->list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
put_uobj(uobj);
|
|
ret = in_len;
|
|
|
|
out:
|
|
mutex_unlock(&file->device->xrcd_tree_mutex);
|
|
return ret;
|
|
}
|
|
|
|
void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev,
|
|
struct ib_xrcd *xrcd)
|
|
{
|
|
struct inode *inode;
|
|
|
|
inode = xrcd->inode;
|
|
if (inode && !atomic_dec_and_test(&xrcd->usecnt))
|
|
return;
|
|
|
|
ib_dealloc_xrcd(xrcd);
|
|
|
|
if (inode)
|
|
xrcd_table_delete(dev, inode);
|
|
}
|
|
|
|
ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_reg_mr cmd;
|
|
struct ib_uverbs_reg_mr_resp resp;
|
|
struct ib_udata udata;
|
|
struct ib_uobject *uobj;
|
|
struct ib_pd *pd;
|
|
struct ib_mr *mr;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd,
|
|
(unsigned long) cmd.response + sizeof resp,
|
|
in_len - sizeof cmd, out_len - sizeof resp);
|
|
|
|
if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
|
|
return -EINVAL;
|
|
|
|
ret = ib_check_mr_access(cmd.access_flags);
|
|
if (ret)
|
|
return ret;
|
|
|
|
uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
|
|
if (!uobj)
|
|
return -ENOMEM;
|
|
|
|
init_uobj(uobj, 0, file->ucontext, &mr_lock_class);
|
|
down_write(&uobj->mutex);
|
|
|
|
pd = idr_read_pd(cmd.pd_handle, file->ucontext);
|
|
if (!pd) {
|
|
ret = -EINVAL;
|
|
goto err_free;
|
|
}
|
|
|
|
if (cmd.access_flags & IB_ACCESS_ON_DEMAND) {
|
|
struct ib_device_attr attr;
|
|
|
|
ret = ib_query_device(pd->device, &attr);
|
|
if (ret || !(attr.device_cap_flags &
|
|
IB_DEVICE_ON_DEMAND_PAGING)) {
|
|
pr_debug("ODP support not available\n");
|
|
ret = -EINVAL;
|
|
goto err_put;
|
|
}
|
|
}
|
|
|
|
mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
|
|
cmd.access_flags, &udata);
|
|
if (IS_ERR(mr)) {
|
|
ret = PTR_ERR(mr);
|
|
goto err_put;
|
|
}
|
|
|
|
mr->device = pd->device;
|
|
mr->pd = pd;
|
|
mr->uobject = uobj;
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_set(&mr->usecnt, 0);
|
|
|
|
uobj->object = mr;
|
|
ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj);
|
|
if (ret)
|
|
goto err_unreg;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
resp.lkey = mr->lkey;
|
|
resp.rkey = mr->rkey;
|
|
resp.mr_handle = uobj->id;
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp)) {
|
|
ret = -EFAULT;
|
|
goto err_copy;
|
|
}
|
|
|
|
put_pd_read(pd);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_add_tail(&uobj->list, &file->ucontext->mr_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
uobj->live = 1;
|
|
|
|
up_write(&uobj->mutex);
|
|
|
|
return in_len;
|
|
|
|
err_copy:
|
|
idr_remove_uobj(&ib_uverbs_mr_idr, uobj);
|
|
|
|
err_unreg:
|
|
ib_dereg_mr(mr);
|
|
|
|
err_put:
|
|
put_pd_read(pd);
|
|
|
|
err_free:
|
|
put_uobj_write(uobj);
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_rereg_mr cmd;
|
|
struct ib_uverbs_rereg_mr_resp resp;
|
|
struct ib_udata udata;
|
|
struct ib_pd *pd = NULL;
|
|
struct ib_mr *mr;
|
|
struct ib_pd *old_pd;
|
|
int ret;
|
|
struct ib_uobject *uobj;
|
|
|
|
if (out_len < sizeof(resp))
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof(cmd)))
|
|
return -EFAULT;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof(cmd),
|
|
(unsigned long) cmd.response + sizeof(resp),
|
|
in_len - sizeof(cmd), out_len - sizeof(resp));
|
|
|
|
if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags)
|
|
return -EINVAL;
|
|
|
|
if ((cmd.flags & IB_MR_REREG_TRANS) &&
|
|
(!cmd.start || !cmd.hca_va || 0 >= cmd.length ||
|
|
(cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)))
|
|
return -EINVAL;
|
|
|
|
uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle,
|
|
file->ucontext);
|
|
|
|
if (!uobj)
|
|
return -EINVAL;
|
|
|
|
mr = uobj->object;
|
|
|
|
if (cmd.flags & IB_MR_REREG_ACCESS) {
|
|
ret = ib_check_mr_access(cmd.access_flags);
|
|
if (ret)
|
|
goto put_uobjs;
|
|
}
|
|
|
|
if (cmd.flags & IB_MR_REREG_PD) {
|
|
pd = idr_read_pd(cmd.pd_handle, file->ucontext);
|
|
if (!pd) {
|
|
ret = -EINVAL;
|
|
goto put_uobjs;
|
|
}
|
|
}
|
|
|
|
if (atomic_read(&mr->usecnt)) {
|
|
ret = -EBUSY;
|
|
goto put_uobj_pd;
|
|
}
|
|
|
|
old_pd = mr->pd;
|
|
ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start,
|
|
cmd.length, cmd.hca_va,
|
|
cmd.access_flags, pd, &udata);
|
|
if (!ret) {
|
|
if (cmd.flags & IB_MR_REREG_PD) {
|
|
atomic_inc(&pd->usecnt);
|
|
mr->pd = pd;
|
|
atomic_dec(&old_pd->usecnt);
|
|
}
|
|
} else {
|
|
goto put_uobj_pd;
|
|
}
|
|
|
|
memset(&resp, 0, sizeof(resp));
|
|
resp.lkey = mr->lkey;
|
|
resp.rkey = mr->rkey;
|
|
|
|
if (copy_to_user((void __user *)(unsigned long)cmd.response,
|
|
&resp, sizeof(resp)))
|
|
ret = -EFAULT;
|
|
else
|
|
ret = in_len;
|
|
|
|
put_uobj_pd:
|
|
if (cmd.flags & IB_MR_REREG_PD)
|
|
put_pd_read(pd);
|
|
|
|
put_uobjs:
|
|
|
|
put_uobj_write(mr->uobject);
|
|
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_dereg_mr cmd;
|
|
struct ib_mr *mr;
|
|
struct ib_uobject *uobj;
|
|
int ret = -EINVAL;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext);
|
|
if (!uobj)
|
|
return -EINVAL;
|
|
|
|
mr = uobj->object;
|
|
|
|
ret = ib_dereg_mr(mr);
|
|
if (!ret)
|
|
uobj->live = 0;
|
|
|
|
put_uobj_write(uobj);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
idr_remove_uobj(&ib_uverbs_mr_idr, uobj);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_del(&uobj->list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
put_uobj(uobj);
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_alloc_mw cmd;
|
|
struct ib_uverbs_alloc_mw_resp resp;
|
|
struct ib_uobject *uobj;
|
|
struct ib_pd *pd;
|
|
struct ib_mw *mw;
|
|
int ret;
|
|
|
|
if (out_len < sizeof(resp))
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof(cmd)))
|
|
return -EFAULT;
|
|
|
|
uobj = kmalloc(sizeof(*uobj), GFP_KERNEL);
|
|
if (!uobj)
|
|
return -ENOMEM;
|
|
|
|
init_uobj(uobj, 0, file->ucontext, &mw_lock_class);
|
|
down_write(&uobj->mutex);
|
|
|
|
pd = idr_read_pd(cmd.pd_handle, file->ucontext);
|
|
if (!pd) {
|
|
ret = -EINVAL;
|
|
goto err_free;
|
|
}
|
|
|
|
mw = pd->device->alloc_mw(pd, cmd.mw_type);
|
|
if (IS_ERR(mw)) {
|
|
ret = PTR_ERR(mw);
|
|
goto err_put;
|
|
}
|
|
|
|
mw->device = pd->device;
|
|
mw->pd = pd;
|
|
mw->uobject = uobj;
|
|
atomic_inc(&pd->usecnt);
|
|
|
|
uobj->object = mw;
|
|
ret = idr_add_uobj(&ib_uverbs_mw_idr, uobj);
|
|
if (ret)
|
|
goto err_unalloc;
|
|
|
|
memset(&resp, 0, sizeof(resp));
|
|
resp.rkey = mw->rkey;
|
|
resp.mw_handle = uobj->id;
|
|
|
|
if (copy_to_user((void __user *)(unsigned long)cmd.response,
|
|
&resp, sizeof(resp))) {
|
|
ret = -EFAULT;
|
|
goto err_copy;
|
|
}
|
|
|
|
put_pd_read(pd);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_add_tail(&uobj->list, &file->ucontext->mw_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
uobj->live = 1;
|
|
|
|
up_write(&uobj->mutex);
|
|
|
|
return in_len;
|
|
|
|
err_copy:
|
|
idr_remove_uobj(&ib_uverbs_mw_idr, uobj);
|
|
|
|
err_unalloc:
|
|
ib_dealloc_mw(mw);
|
|
|
|
err_put:
|
|
put_pd_read(pd);
|
|
|
|
err_free:
|
|
put_uobj_write(uobj);
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_dealloc_mw cmd;
|
|
struct ib_mw *mw;
|
|
struct ib_uobject *uobj;
|
|
int ret = -EINVAL;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof(cmd)))
|
|
return -EFAULT;
|
|
|
|
uobj = idr_write_uobj(&ib_uverbs_mw_idr, cmd.mw_handle, file->ucontext);
|
|
if (!uobj)
|
|
return -EINVAL;
|
|
|
|
mw = uobj->object;
|
|
|
|
ret = ib_dealloc_mw(mw);
|
|
if (!ret)
|
|
uobj->live = 0;
|
|
|
|
put_uobj_write(uobj);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
idr_remove_uobj(&ib_uverbs_mw_idr, uobj);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_del(&uobj->list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
put_uobj(uobj);
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_create_comp_channel cmd;
|
|
struct ib_uverbs_create_comp_channel_resp resp;
|
|
struct file *filp;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
ret = get_unused_fd_flags(O_CLOEXEC);
|
|
if (ret < 0)
|
|
return ret;
|
|
resp.fd = ret;
|
|
|
|
filp = ib_uverbs_alloc_event_file(file, 0);
|
|
if (IS_ERR(filp)) {
|
|
put_unused_fd(resp.fd);
|
|
return PTR_ERR(filp);
|
|
}
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp)) {
|
|
put_unused_fd(resp.fd);
|
|
fput(filp);
|
|
return -EFAULT;
|
|
}
|
|
|
|
fd_install(resp.fd, filp);
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_create_cq cmd;
|
|
struct ib_uverbs_create_cq_resp resp;
|
|
struct ib_udata udata;
|
|
struct ib_ucq_object *obj;
|
|
struct ib_uverbs_event_file *ev_file = NULL;
|
|
struct ib_cq *cq;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd,
|
|
(unsigned long) cmd.response + sizeof resp,
|
|
in_len - sizeof cmd, out_len - sizeof resp);
|
|
|
|
if (cmd.comp_vector >= file->device->num_comp_vectors)
|
|
return -EINVAL;
|
|
|
|
obj = kmalloc(sizeof *obj, GFP_KERNEL);
|
|
if (!obj)
|
|
return -ENOMEM;
|
|
|
|
init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &cq_lock_class);
|
|
down_write(&obj->uobject.mutex);
|
|
|
|
if (cmd.comp_channel >= 0) {
|
|
ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel);
|
|
if (!ev_file) {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
obj->uverbs_file = file;
|
|
obj->comp_events_reported = 0;
|
|
obj->async_events_reported = 0;
|
|
INIT_LIST_HEAD(&obj->comp_list);
|
|
INIT_LIST_HEAD(&obj->async_list);
|
|
|
|
cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe,
|
|
cmd.comp_vector,
|
|
file->ucontext, &udata);
|
|
if (IS_ERR(cq)) {
|
|
ret = PTR_ERR(cq);
|
|
goto err_file;
|
|
}
|
|
|
|
cq->device = file->device->ib_dev;
|
|
cq->uobject = &obj->uobject;
|
|
cq->comp_handler = ib_uverbs_comp_handler;
|
|
cq->event_handler = ib_uverbs_cq_event_handler;
|
|
cq->cq_context = ev_file;
|
|
atomic_set(&cq->usecnt, 0);
|
|
|
|
obj->uobject.object = cq;
|
|
ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
resp.cq_handle = obj->uobject.id;
|
|
resp.cqe = cq->cqe;
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp)) {
|
|
ret = -EFAULT;
|
|
goto err_copy;
|
|
}
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_add_tail(&obj->uobject.list, &file->ucontext->cq_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
obj->uobject.live = 1;
|
|
|
|
up_write(&obj->uobject.mutex);
|
|
|
|
return in_len;
|
|
|
|
err_copy:
|
|
idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject);
|
|
|
|
err_free:
|
|
ib_destroy_cq(cq);
|
|
|
|
err_file:
|
|
if (ev_file)
|
|
ib_uverbs_release_ucq(file, ev_file, obj);
|
|
|
|
err:
|
|
put_uobj_write(&obj->uobject);
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_resize_cq cmd;
|
|
struct ib_uverbs_resize_cq_resp resp;
|
|
struct ib_udata udata;
|
|
struct ib_cq *cq;
|
|
int ret = -EINVAL;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd,
|
|
(unsigned long) cmd.response + sizeof resp,
|
|
in_len - sizeof cmd, out_len - sizeof resp);
|
|
|
|
cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
|
|
if (!cq)
|
|
return -EINVAL;
|
|
|
|
ret = cq->device->resize_cq(cq, cmd.cqe, &udata);
|
|
if (ret)
|
|
goto out;
|
|
|
|
resp.cqe = cq->cqe;
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp.cqe))
|
|
ret = -EFAULT;
|
|
|
|
out:
|
|
put_cq_read(cq);
|
|
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
static int copy_wc_to_user(void __user *dest, struct ib_wc *wc)
|
|
{
|
|
struct ib_uverbs_wc tmp;
|
|
|
|
tmp.wr_id = wc->wr_id;
|
|
tmp.status = wc->status;
|
|
tmp.opcode = wc->opcode;
|
|
tmp.vendor_err = wc->vendor_err;
|
|
tmp.byte_len = wc->byte_len;
|
|
tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data;
|
|
tmp.qp_num = wc->qp->qp_num;
|
|
tmp.src_qp = wc->src_qp;
|
|
tmp.wc_flags = wc->wc_flags;
|
|
tmp.pkey_index = wc->pkey_index;
|
|
tmp.slid = wc->slid;
|
|
tmp.sl = wc->sl;
|
|
tmp.dlid_path_bits = wc->dlid_path_bits;
|
|
tmp.port_num = wc->port_num;
|
|
tmp.reserved = 0;
|
|
|
|
if (copy_to_user(dest, &tmp, sizeof tmp))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_poll_cq cmd;
|
|
struct ib_uverbs_poll_cq_resp resp;
|
|
u8 __user *header_ptr;
|
|
u8 __user *data_ptr;
|
|
struct ib_cq *cq;
|
|
struct ib_wc wc;
|
|
int ret;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
|
|
if (!cq)
|
|
return -EINVAL;
|
|
|
|
/* we copy a struct ib_uverbs_poll_cq_resp to user space */
|
|
header_ptr = (void __user *)(unsigned long) cmd.response;
|
|
data_ptr = header_ptr + sizeof resp;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
while (resp.count < cmd.ne) {
|
|
ret = ib_poll_cq(cq, 1, &wc);
|
|
if (ret < 0)
|
|
goto out_put;
|
|
if (!ret)
|
|
break;
|
|
|
|
ret = copy_wc_to_user(data_ptr, &wc);
|
|
if (ret)
|
|
goto out_put;
|
|
|
|
data_ptr += sizeof(struct ib_uverbs_wc);
|
|
++resp.count;
|
|
}
|
|
|
|
if (copy_to_user(header_ptr, &resp, sizeof resp)) {
|
|
ret = -EFAULT;
|
|
goto out_put;
|
|
}
|
|
|
|
ret = in_len;
|
|
|
|
out_put:
|
|
put_cq_read(cq);
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_req_notify_cq cmd;
|
|
struct ib_cq *cq;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
|
|
if (!cq)
|
|
return -EINVAL;
|
|
|
|
ib_req_notify_cq(cq, cmd.solicited_only ?
|
|
IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
|
|
|
|
put_cq_read(cq);
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_destroy_cq cmd;
|
|
struct ib_uverbs_destroy_cq_resp resp;
|
|
struct ib_uobject *uobj;
|
|
struct ib_cq *cq;
|
|
struct ib_ucq_object *obj;
|
|
struct ib_uverbs_event_file *ev_file;
|
|
int ret = -EINVAL;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext);
|
|
if (!uobj)
|
|
return -EINVAL;
|
|
cq = uobj->object;
|
|
ev_file = cq->cq_context;
|
|
obj = container_of(cq->uobject, struct ib_ucq_object, uobject);
|
|
|
|
ret = ib_destroy_cq(cq);
|
|
if (!ret)
|
|
uobj->live = 0;
|
|
|
|
put_uobj_write(uobj);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
idr_remove_uobj(&ib_uverbs_cq_idr, uobj);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_del(&uobj->list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
ib_uverbs_release_ucq(file, ev_file, obj);
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
resp.comp_events_reported = obj->comp_events_reported;
|
|
resp.async_events_reported = obj->async_events_reported;
|
|
|
|
put_uobj(uobj);
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp))
|
|
return -EFAULT;
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_create_qp cmd;
|
|
struct ib_uverbs_create_qp_resp resp;
|
|
struct ib_udata udata;
|
|
struct ib_uqp_object *obj;
|
|
struct ib_device *device;
|
|
struct ib_pd *pd = NULL;
|
|
struct ib_xrcd *xrcd = NULL;
|
|
struct ib_uobject *uninitialized_var(xrcd_uobj);
|
|
struct ib_cq *scq = NULL, *rcq = NULL;
|
|
struct ib_srq *srq = NULL;
|
|
struct ib_qp *qp;
|
|
struct ib_qp_init_attr attr;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
if (cmd.qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
|
|
return -EPERM;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd,
|
|
(unsigned long) cmd.response + sizeof resp,
|
|
in_len - sizeof cmd, out_len - sizeof resp);
|
|
|
|
obj = kzalloc(sizeof *obj, GFP_KERNEL);
|
|
if (!obj)
|
|
return -ENOMEM;
|
|
|
|
init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class);
|
|
down_write(&obj->uevent.uobject.mutex);
|
|
|
|
if (cmd.qp_type == IB_QPT_XRC_TGT) {
|
|
xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj);
|
|
if (!xrcd) {
|
|
ret = -EINVAL;
|
|
goto err_put;
|
|
}
|
|
device = xrcd->device;
|
|
} else {
|
|
if (cmd.qp_type == IB_QPT_XRC_INI) {
|
|
cmd.max_recv_wr = cmd.max_recv_sge = 0;
|
|
} else {
|
|
if (cmd.is_srq) {
|
|
srq = idr_read_srq(cmd.srq_handle, file->ucontext);
|
|
if (!srq || srq->srq_type != IB_SRQT_BASIC) {
|
|
ret = -EINVAL;
|
|
goto err_put;
|
|
}
|
|
}
|
|
|
|
if (cmd.recv_cq_handle != cmd.send_cq_handle) {
|
|
rcq = idr_read_cq(cmd.recv_cq_handle, file->ucontext, 0);
|
|
if (!rcq) {
|
|
ret = -EINVAL;
|
|
goto err_put;
|
|
}
|
|
}
|
|
}
|
|
|
|
scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, !!rcq);
|
|
rcq = rcq ?: scq;
|
|
pd = idr_read_pd(cmd.pd_handle, file->ucontext);
|
|
if (!pd || !scq) {
|
|
ret = -EINVAL;
|
|
goto err_put;
|
|
}
|
|
|
|
device = pd->device;
|
|
}
|
|
|
|
attr.event_handler = ib_uverbs_qp_event_handler;
|
|
attr.qp_context = file;
|
|
attr.send_cq = scq;
|
|
attr.recv_cq = rcq;
|
|
attr.srq = srq;
|
|
attr.xrcd = xrcd;
|
|
attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
|
|
attr.qp_type = cmd.qp_type;
|
|
attr.create_flags = 0;
|
|
|
|
attr.cap.max_send_wr = cmd.max_send_wr;
|
|
attr.cap.max_recv_wr = cmd.max_recv_wr;
|
|
attr.cap.max_send_sge = cmd.max_send_sge;
|
|
attr.cap.max_recv_sge = cmd.max_recv_sge;
|
|
attr.cap.max_inline_data = cmd.max_inline_data;
|
|
|
|
obj->uevent.events_reported = 0;
|
|
INIT_LIST_HEAD(&obj->uevent.event_list);
|
|
INIT_LIST_HEAD(&obj->mcast_list);
|
|
|
|
if (cmd.qp_type == IB_QPT_XRC_TGT)
|
|
qp = ib_create_qp(pd, &attr);
|
|
else
|
|
qp = device->create_qp(pd, &attr, &udata);
|
|
|
|
if (IS_ERR(qp)) {
|
|
ret = PTR_ERR(qp);
|
|
goto err_put;
|
|
}
|
|
|
|
if (cmd.qp_type != IB_QPT_XRC_TGT) {
|
|
qp->real_qp = qp;
|
|
qp->device = device;
|
|
qp->pd = pd;
|
|
qp->send_cq = attr.send_cq;
|
|
qp->recv_cq = attr.recv_cq;
|
|
qp->srq = attr.srq;
|
|
qp->event_handler = attr.event_handler;
|
|
qp->qp_context = attr.qp_context;
|
|
qp->qp_type = attr.qp_type;
|
|
atomic_set(&qp->usecnt, 0);
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_inc(&attr.send_cq->usecnt);
|
|
if (attr.recv_cq)
|
|
atomic_inc(&attr.recv_cq->usecnt);
|
|
if (attr.srq)
|
|
atomic_inc(&attr.srq->usecnt);
|
|
}
|
|
qp->uobject = &obj->uevent.uobject;
|
|
|
|
obj->uevent.uobject.object = qp;
|
|
ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
|
|
if (ret)
|
|
goto err_destroy;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
resp.qpn = qp->qp_num;
|
|
resp.qp_handle = obj->uevent.uobject.id;
|
|
resp.max_recv_sge = attr.cap.max_recv_sge;
|
|
resp.max_send_sge = attr.cap.max_send_sge;
|
|
resp.max_recv_wr = attr.cap.max_recv_wr;
|
|
resp.max_send_wr = attr.cap.max_send_wr;
|
|
resp.max_inline_data = attr.cap.max_inline_data;
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp)) {
|
|
ret = -EFAULT;
|
|
goto err_copy;
|
|
}
|
|
|
|
if (xrcd) {
|
|
obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
|
|
uobject);
|
|
atomic_inc(&obj->uxrcd->refcnt);
|
|
put_xrcd_read(xrcd_uobj);
|
|
}
|
|
|
|
if (pd)
|
|
put_pd_read(pd);
|
|
if (scq)
|
|
put_cq_read(scq);
|
|
if (rcq && rcq != scq)
|
|
put_cq_read(rcq);
|
|
if (srq)
|
|
put_srq_read(srq);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
obj->uevent.uobject.live = 1;
|
|
|
|
up_write(&obj->uevent.uobject.mutex);
|
|
|
|
return in_len;
|
|
|
|
err_copy:
|
|
idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
|
|
|
|
err_destroy:
|
|
ib_destroy_qp(qp);
|
|
|
|
err_put:
|
|
if (xrcd)
|
|
put_xrcd_read(xrcd_uobj);
|
|
if (pd)
|
|
put_pd_read(pd);
|
|
if (scq)
|
|
put_cq_read(scq);
|
|
if (rcq && rcq != scq)
|
|
put_cq_read(rcq);
|
|
if (srq)
|
|
put_srq_read(srq);
|
|
|
|
put_uobj_write(&obj->uevent.uobject);
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len, int out_len)
|
|
{
|
|
struct ib_uverbs_open_qp cmd;
|
|
struct ib_uverbs_create_qp_resp resp;
|
|
struct ib_udata udata;
|
|
struct ib_uqp_object *obj;
|
|
struct ib_xrcd *xrcd;
|
|
struct ib_uobject *uninitialized_var(xrcd_uobj);
|
|
struct ib_qp *qp;
|
|
struct ib_qp_open_attr attr;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd,
|
|
(unsigned long) cmd.response + sizeof resp,
|
|
in_len - sizeof cmd, out_len - sizeof resp);
|
|
|
|
obj = kmalloc(sizeof *obj, GFP_KERNEL);
|
|
if (!obj)
|
|
return -ENOMEM;
|
|
|
|
init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class);
|
|
down_write(&obj->uevent.uobject.mutex);
|
|
|
|
xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj);
|
|
if (!xrcd) {
|
|
ret = -EINVAL;
|
|
goto err_put;
|
|
}
|
|
|
|
attr.event_handler = ib_uverbs_qp_event_handler;
|
|
attr.qp_context = file;
|
|
attr.qp_num = cmd.qpn;
|
|
attr.qp_type = cmd.qp_type;
|
|
|
|
obj->uevent.events_reported = 0;
|
|
INIT_LIST_HEAD(&obj->uevent.event_list);
|
|
INIT_LIST_HEAD(&obj->mcast_list);
|
|
|
|
qp = ib_open_qp(xrcd, &attr);
|
|
if (IS_ERR(qp)) {
|
|
ret = PTR_ERR(qp);
|
|
goto err_put;
|
|
}
|
|
|
|
qp->uobject = &obj->uevent.uobject;
|
|
|
|
obj->uevent.uobject.object = qp;
|
|
ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
|
|
if (ret)
|
|
goto err_destroy;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
resp.qpn = qp->qp_num;
|
|
resp.qp_handle = obj->uevent.uobject.id;
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp)) {
|
|
ret = -EFAULT;
|
|
goto err_remove;
|
|
}
|
|
|
|
obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
|
|
atomic_inc(&obj->uxrcd->refcnt);
|
|
put_xrcd_read(xrcd_uobj);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
obj->uevent.uobject.live = 1;
|
|
|
|
up_write(&obj->uevent.uobject.mutex);
|
|
|
|
return in_len;
|
|
|
|
err_remove:
|
|
idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
|
|
|
|
err_destroy:
|
|
ib_destroy_qp(qp);
|
|
|
|
err_put:
|
|
put_xrcd_read(xrcd_uobj);
|
|
put_uobj_write(&obj->uevent.uobject);
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_query_qp cmd;
|
|
struct ib_uverbs_query_qp_resp resp;
|
|
struct ib_qp *qp;
|
|
struct ib_qp_attr *attr;
|
|
struct ib_qp_init_attr *init_attr;
|
|
int ret;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
attr = kmalloc(sizeof *attr, GFP_KERNEL);
|
|
init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
|
|
if (!attr || !init_attr) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
qp = idr_read_qp(cmd.qp_handle, file->ucontext);
|
|
if (!qp) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
|
|
|
|
put_qp_read(qp);
|
|
|
|
if (ret)
|
|
goto out;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
|
|
resp.qp_state = attr->qp_state;
|
|
resp.cur_qp_state = attr->cur_qp_state;
|
|
resp.path_mtu = attr->path_mtu;
|
|
resp.path_mig_state = attr->path_mig_state;
|
|
resp.qkey = attr->qkey;
|
|
resp.rq_psn = attr->rq_psn;
|
|
resp.sq_psn = attr->sq_psn;
|
|
resp.dest_qp_num = attr->dest_qp_num;
|
|
resp.qp_access_flags = attr->qp_access_flags;
|
|
resp.pkey_index = attr->pkey_index;
|
|
resp.alt_pkey_index = attr->alt_pkey_index;
|
|
resp.sq_draining = attr->sq_draining;
|
|
resp.max_rd_atomic = attr->max_rd_atomic;
|
|
resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
|
|
resp.min_rnr_timer = attr->min_rnr_timer;
|
|
resp.port_num = attr->port_num;
|
|
resp.timeout = attr->timeout;
|
|
resp.retry_cnt = attr->retry_cnt;
|
|
resp.rnr_retry = attr->rnr_retry;
|
|
resp.alt_port_num = attr->alt_port_num;
|
|
resp.alt_timeout = attr->alt_timeout;
|
|
|
|
memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16);
|
|
resp.dest.flow_label = attr->ah_attr.grh.flow_label;
|
|
resp.dest.sgid_index = attr->ah_attr.grh.sgid_index;
|
|
resp.dest.hop_limit = attr->ah_attr.grh.hop_limit;
|
|
resp.dest.traffic_class = attr->ah_attr.grh.traffic_class;
|
|
resp.dest.dlid = attr->ah_attr.dlid;
|
|
resp.dest.sl = attr->ah_attr.sl;
|
|
resp.dest.src_path_bits = attr->ah_attr.src_path_bits;
|
|
resp.dest.static_rate = attr->ah_attr.static_rate;
|
|
resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH);
|
|
resp.dest.port_num = attr->ah_attr.port_num;
|
|
|
|
memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16);
|
|
resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label;
|
|
resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index;
|
|
resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit;
|
|
resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class;
|
|
resp.alt_dest.dlid = attr->alt_ah_attr.dlid;
|
|
resp.alt_dest.sl = attr->alt_ah_attr.sl;
|
|
resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits;
|
|
resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate;
|
|
resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH);
|
|
resp.alt_dest.port_num = attr->alt_ah_attr.port_num;
|
|
|
|
resp.max_send_wr = init_attr->cap.max_send_wr;
|
|
resp.max_recv_wr = init_attr->cap.max_recv_wr;
|
|
resp.max_send_sge = init_attr->cap.max_send_sge;
|
|
resp.max_recv_sge = init_attr->cap.max_recv_sge;
|
|
resp.max_inline_data = init_attr->cap.max_inline_data;
|
|
resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp))
|
|
ret = -EFAULT;
|
|
|
|
out:
|
|
kfree(attr);
|
|
kfree(init_attr);
|
|
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
/* Remove ignored fields set in the attribute mask */
|
|
static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
|
|
{
|
|
switch (qp_type) {
|
|
case IB_QPT_XRC_INI:
|
|
return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
|
|
case IB_QPT_XRC_TGT:
|
|
return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
|
|
IB_QP_RNR_RETRY);
|
|
default:
|
|
return mask;
|
|
}
|
|
}
|
|
|
|
ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_modify_qp cmd;
|
|
struct ib_udata udata;
|
|
struct ib_qp *qp;
|
|
struct ib_qp_attr *attr;
|
|
int ret;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
|
|
out_len);
|
|
|
|
attr = kmalloc(sizeof *attr, GFP_KERNEL);
|
|
if (!attr)
|
|
return -ENOMEM;
|
|
|
|
qp = idr_read_qp(cmd.qp_handle, file->ucontext);
|
|
if (!qp) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
attr->qp_state = cmd.qp_state;
|
|
attr->cur_qp_state = cmd.cur_qp_state;
|
|
attr->path_mtu = cmd.path_mtu;
|
|
attr->path_mig_state = cmd.path_mig_state;
|
|
attr->qkey = cmd.qkey;
|
|
attr->rq_psn = cmd.rq_psn;
|
|
attr->sq_psn = cmd.sq_psn;
|
|
attr->dest_qp_num = cmd.dest_qp_num;
|
|
attr->qp_access_flags = cmd.qp_access_flags;
|
|
attr->pkey_index = cmd.pkey_index;
|
|
attr->alt_pkey_index = cmd.alt_pkey_index;
|
|
attr->en_sqd_async_notify = cmd.en_sqd_async_notify;
|
|
attr->max_rd_atomic = cmd.max_rd_atomic;
|
|
attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic;
|
|
attr->min_rnr_timer = cmd.min_rnr_timer;
|
|
attr->port_num = cmd.port_num;
|
|
attr->timeout = cmd.timeout;
|
|
attr->retry_cnt = cmd.retry_cnt;
|
|
attr->rnr_retry = cmd.rnr_retry;
|
|
attr->alt_port_num = cmd.alt_port_num;
|
|
attr->alt_timeout = cmd.alt_timeout;
|
|
|
|
memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16);
|
|
attr->ah_attr.grh.flow_label = cmd.dest.flow_label;
|
|
attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index;
|
|
attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit;
|
|
attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class;
|
|
attr->ah_attr.dlid = cmd.dest.dlid;
|
|
attr->ah_attr.sl = cmd.dest.sl;
|
|
attr->ah_attr.src_path_bits = cmd.dest.src_path_bits;
|
|
attr->ah_attr.static_rate = cmd.dest.static_rate;
|
|
attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0;
|
|
attr->ah_attr.port_num = cmd.dest.port_num;
|
|
|
|
memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16);
|
|
attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label;
|
|
attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index;
|
|
attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit;
|
|
attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class;
|
|
attr->alt_ah_attr.dlid = cmd.alt_dest.dlid;
|
|
attr->alt_ah_attr.sl = cmd.alt_dest.sl;
|
|
attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits;
|
|
attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate;
|
|
attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0;
|
|
attr->alt_ah_attr.port_num = cmd.alt_dest.port_num;
|
|
|
|
if (qp->real_qp == qp) {
|
|
ret = ib_resolve_eth_l2_attrs(qp, attr, &cmd.attr_mask);
|
|
if (ret)
|
|
goto release_qp;
|
|
ret = qp->device->modify_qp(qp, attr,
|
|
modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata);
|
|
} else {
|
|
ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask));
|
|
}
|
|
|
|
if (ret)
|
|
goto release_qp;
|
|
|
|
ret = in_len;
|
|
|
|
release_qp:
|
|
put_qp_read(qp);
|
|
|
|
out:
|
|
kfree(attr);
|
|
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_destroy_qp cmd;
|
|
struct ib_uverbs_destroy_qp_resp resp;
|
|
struct ib_uobject *uobj;
|
|
struct ib_qp *qp;
|
|
struct ib_uqp_object *obj;
|
|
int ret = -EINVAL;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
|
|
uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext);
|
|
if (!uobj)
|
|
return -EINVAL;
|
|
qp = uobj->object;
|
|
obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
|
|
|
|
if (!list_empty(&obj->mcast_list)) {
|
|
put_uobj_write(uobj);
|
|
return -EBUSY;
|
|
}
|
|
|
|
ret = ib_destroy_qp(qp);
|
|
if (!ret)
|
|
uobj->live = 0;
|
|
|
|
put_uobj_write(uobj);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (obj->uxrcd)
|
|
atomic_dec(&obj->uxrcd->refcnt);
|
|
|
|
idr_remove_uobj(&ib_uverbs_qp_idr, uobj);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_del(&uobj->list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
ib_uverbs_release_uevent(file, &obj->uevent);
|
|
|
|
resp.events_reported = obj->uevent.events_reported;
|
|
|
|
put_uobj(uobj);
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp))
|
|
return -EFAULT;
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_post_send cmd;
|
|
struct ib_uverbs_post_send_resp resp;
|
|
struct ib_uverbs_send_wr *user_wr;
|
|
struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
|
|
struct ib_qp *qp;
|
|
int i, sg_ind;
|
|
int is_ud;
|
|
ssize_t ret = -EINVAL;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
|
|
cmd.sge_count * sizeof (struct ib_uverbs_sge))
|
|
return -EINVAL;
|
|
|
|
if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
|
|
return -EINVAL;
|
|
|
|
user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
|
|
if (!user_wr)
|
|
return -ENOMEM;
|
|
|
|
qp = idr_read_qp(cmd.qp_handle, file->ucontext);
|
|
if (!qp)
|
|
goto out;
|
|
|
|
is_ud = qp->qp_type == IB_QPT_UD;
|
|
sg_ind = 0;
|
|
last = NULL;
|
|
for (i = 0; i < cmd.wr_count; ++i) {
|
|
if (copy_from_user(user_wr,
|
|
buf + sizeof cmd + i * cmd.wqe_size,
|
|
cmd.wqe_size)) {
|
|
ret = -EFAULT;
|
|
goto out_put;
|
|
}
|
|
|
|
if (user_wr->num_sge + sg_ind > cmd.sge_count) {
|
|
ret = -EINVAL;
|
|
goto out_put;
|
|
}
|
|
|
|
next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
|
|
user_wr->num_sge * sizeof (struct ib_sge),
|
|
GFP_KERNEL);
|
|
if (!next) {
|
|
ret = -ENOMEM;
|
|
goto out_put;
|
|
}
|
|
|
|
if (!last)
|
|
wr = next;
|
|
else
|
|
last->next = next;
|
|
last = next;
|
|
|
|
next->next = NULL;
|
|
next->wr_id = user_wr->wr_id;
|
|
next->num_sge = user_wr->num_sge;
|
|
next->opcode = user_wr->opcode;
|
|
next->send_flags = user_wr->send_flags;
|
|
|
|
if (is_ud) {
|
|
next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah,
|
|
file->ucontext);
|
|
if (!next->wr.ud.ah) {
|
|
ret = -EINVAL;
|
|
goto out_put;
|
|
}
|
|
next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn;
|
|
next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey;
|
|
if (next->opcode == IB_WR_SEND_WITH_IMM)
|
|
next->ex.imm_data =
|
|
(__be32 __force) user_wr->ex.imm_data;
|
|
} else {
|
|
switch (next->opcode) {
|
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
next->ex.imm_data =
|
|
(__be32 __force) user_wr->ex.imm_data;
|
|
case IB_WR_RDMA_WRITE:
|
|
case IB_WR_RDMA_READ:
|
|
next->wr.rdma.remote_addr =
|
|
user_wr->wr.rdma.remote_addr;
|
|
next->wr.rdma.rkey =
|
|
user_wr->wr.rdma.rkey;
|
|
break;
|
|
case IB_WR_SEND_WITH_IMM:
|
|
next->ex.imm_data =
|
|
(__be32 __force) user_wr->ex.imm_data;
|
|
break;
|
|
case IB_WR_SEND_WITH_INV:
|
|
next->ex.invalidate_rkey =
|
|
user_wr->ex.invalidate_rkey;
|
|
break;
|
|
case IB_WR_ATOMIC_CMP_AND_SWP:
|
|
case IB_WR_ATOMIC_FETCH_AND_ADD:
|
|
next->wr.atomic.remote_addr =
|
|
user_wr->wr.atomic.remote_addr;
|
|
next->wr.atomic.compare_add =
|
|
user_wr->wr.atomic.compare_add;
|
|
next->wr.atomic.swap = user_wr->wr.atomic.swap;
|
|
next->wr.atomic.rkey = user_wr->wr.atomic.rkey;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (next->num_sge) {
|
|
next->sg_list = (void *) next +
|
|
ALIGN(sizeof *next, sizeof (struct ib_sge));
|
|
if (copy_from_user(next->sg_list,
|
|
buf + sizeof cmd +
|
|
cmd.wr_count * cmd.wqe_size +
|
|
sg_ind * sizeof (struct ib_sge),
|
|
next->num_sge * sizeof (struct ib_sge))) {
|
|
ret = -EFAULT;
|
|
goto out_put;
|
|
}
|
|
sg_ind += next->num_sge;
|
|
} else
|
|
next->sg_list = NULL;
|
|
}
|
|
|
|
resp.bad_wr = 0;
|
|
ret = qp->device->post_send(qp->real_qp, wr, &bad_wr);
|
|
if (ret)
|
|
for (next = wr; next; next = next->next) {
|
|
++resp.bad_wr;
|
|
if (next == bad_wr)
|
|
break;
|
|
}
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp))
|
|
ret = -EFAULT;
|
|
|
|
out_put:
|
|
put_qp_read(qp);
|
|
|
|
while (wr) {
|
|
if (is_ud && wr->wr.ud.ah)
|
|
put_ah_read(wr->wr.ud.ah);
|
|
next = wr->next;
|
|
kfree(wr);
|
|
wr = next;
|
|
}
|
|
|
|
out:
|
|
kfree(user_wr);
|
|
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
|
|
int in_len,
|
|
u32 wr_count,
|
|
u32 sge_count,
|
|
u32 wqe_size)
|
|
{
|
|
struct ib_uverbs_recv_wr *user_wr;
|
|
struct ib_recv_wr *wr = NULL, *last, *next;
|
|
int sg_ind;
|
|
int i;
|
|
int ret;
|
|
|
|
if (in_len < wqe_size * wr_count +
|
|
sge_count * sizeof (struct ib_uverbs_sge))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
user_wr = kmalloc(wqe_size, GFP_KERNEL);
|
|
if (!user_wr)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
sg_ind = 0;
|
|
last = NULL;
|
|
for (i = 0; i < wr_count; ++i) {
|
|
if (copy_from_user(user_wr, buf + i * wqe_size,
|
|
wqe_size)) {
|
|
ret = -EFAULT;
|
|
goto err;
|
|
}
|
|
|
|
if (user_wr->num_sge + sg_ind > sge_count) {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
|
|
user_wr->num_sge * sizeof (struct ib_sge),
|
|
GFP_KERNEL);
|
|
if (!next) {
|
|
ret = -ENOMEM;
|
|
goto err;
|
|
}
|
|
|
|
if (!last)
|
|
wr = next;
|
|
else
|
|
last->next = next;
|
|
last = next;
|
|
|
|
next->next = NULL;
|
|
next->wr_id = user_wr->wr_id;
|
|
next->num_sge = user_wr->num_sge;
|
|
|
|
if (next->num_sge) {
|
|
next->sg_list = (void *) next +
|
|
ALIGN(sizeof *next, sizeof (struct ib_sge));
|
|
if (copy_from_user(next->sg_list,
|
|
buf + wr_count * wqe_size +
|
|
sg_ind * sizeof (struct ib_sge),
|
|
next->num_sge * sizeof (struct ib_sge))) {
|
|
ret = -EFAULT;
|
|
goto err;
|
|
}
|
|
sg_ind += next->num_sge;
|
|
} else
|
|
next->sg_list = NULL;
|
|
}
|
|
|
|
kfree(user_wr);
|
|
return wr;
|
|
|
|
err:
|
|
kfree(user_wr);
|
|
|
|
while (wr) {
|
|
next = wr->next;
|
|
kfree(wr);
|
|
wr = next;
|
|
}
|
|
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_post_recv cmd;
|
|
struct ib_uverbs_post_recv_resp resp;
|
|
struct ib_recv_wr *wr, *next, *bad_wr;
|
|
struct ib_qp *qp;
|
|
ssize_t ret = -EINVAL;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
|
|
in_len - sizeof cmd, cmd.wr_count,
|
|
cmd.sge_count, cmd.wqe_size);
|
|
if (IS_ERR(wr))
|
|
return PTR_ERR(wr);
|
|
|
|
qp = idr_read_qp(cmd.qp_handle, file->ucontext);
|
|
if (!qp)
|
|
goto out;
|
|
|
|
resp.bad_wr = 0;
|
|
ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr);
|
|
|
|
put_qp_read(qp);
|
|
|
|
if (ret)
|
|
for (next = wr; next; next = next->next) {
|
|
++resp.bad_wr;
|
|
if (next == bad_wr)
|
|
break;
|
|
}
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp))
|
|
ret = -EFAULT;
|
|
|
|
out:
|
|
while (wr) {
|
|
next = wr->next;
|
|
kfree(wr);
|
|
wr = next;
|
|
}
|
|
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_post_srq_recv cmd;
|
|
struct ib_uverbs_post_srq_recv_resp resp;
|
|
struct ib_recv_wr *wr, *next, *bad_wr;
|
|
struct ib_srq *srq;
|
|
ssize_t ret = -EINVAL;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
|
|
in_len - sizeof cmd, cmd.wr_count,
|
|
cmd.sge_count, cmd.wqe_size);
|
|
if (IS_ERR(wr))
|
|
return PTR_ERR(wr);
|
|
|
|
srq = idr_read_srq(cmd.srq_handle, file->ucontext);
|
|
if (!srq)
|
|
goto out;
|
|
|
|
resp.bad_wr = 0;
|
|
ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
|
|
|
|
put_srq_read(srq);
|
|
|
|
if (ret)
|
|
for (next = wr; next; next = next->next) {
|
|
++resp.bad_wr;
|
|
if (next == bad_wr)
|
|
break;
|
|
}
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp))
|
|
ret = -EFAULT;
|
|
|
|
out:
|
|
while (wr) {
|
|
next = wr->next;
|
|
kfree(wr);
|
|
wr = next;
|
|
}
|
|
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_create_ah cmd;
|
|
struct ib_uverbs_create_ah_resp resp;
|
|
struct ib_uobject *uobj;
|
|
struct ib_pd *pd;
|
|
struct ib_ah *ah;
|
|
struct ib_ah_attr attr;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
|
|
if (!uobj)
|
|
return -ENOMEM;
|
|
|
|
init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_class);
|
|
down_write(&uobj->mutex);
|
|
|
|
pd = idr_read_pd(cmd.pd_handle, file->ucontext);
|
|
if (!pd) {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
attr.dlid = cmd.attr.dlid;
|
|
attr.sl = cmd.attr.sl;
|
|
attr.src_path_bits = cmd.attr.src_path_bits;
|
|
attr.static_rate = cmd.attr.static_rate;
|
|
attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0;
|
|
attr.port_num = cmd.attr.port_num;
|
|
attr.grh.flow_label = cmd.attr.grh.flow_label;
|
|
attr.grh.sgid_index = cmd.attr.grh.sgid_index;
|
|
attr.grh.hop_limit = cmd.attr.grh.hop_limit;
|
|
attr.grh.traffic_class = cmd.attr.grh.traffic_class;
|
|
attr.vlan_id = 0;
|
|
memset(&attr.dmac, 0, sizeof(attr.dmac));
|
|
memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
|
|
|
|
ah = ib_create_ah(pd, &attr);
|
|
if (IS_ERR(ah)) {
|
|
ret = PTR_ERR(ah);
|
|
goto err_put;
|
|
}
|
|
|
|
ah->uobject = uobj;
|
|
uobj->object = ah;
|
|
|
|
ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj);
|
|
if (ret)
|
|
goto err_destroy;
|
|
|
|
resp.ah_handle = uobj->id;
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp)) {
|
|
ret = -EFAULT;
|
|
goto err_copy;
|
|
}
|
|
|
|
put_pd_read(pd);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_add_tail(&uobj->list, &file->ucontext->ah_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
uobj->live = 1;
|
|
|
|
up_write(&uobj->mutex);
|
|
|
|
return in_len;
|
|
|
|
err_copy:
|
|
idr_remove_uobj(&ib_uverbs_ah_idr, uobj);
|
|
|
|
err_destroy:
|
|
ib_destroy_ah(ah);
|
|
|
|
err_put:
|
|
put_pd_read(pd);
|
|
|
|
err:
|
|
put_uobj_write(uobj);
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len, int out_len)
|
|
{
|
|
struct ib_uverbs_destroy_ah cmd;
|
|
struct ib_ah *ah;
|
|
struct ib_uobject *uobj;
|
|
int ret;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext);
|
|
if (!uobj)
|
|
return -EINVAL;
|
|
ah = uobj->object;
|
|
|
|
ret = ib_destroy_ah(ah);
|
|
if (!ret)
|
|
uobj->live = 0;
|
|
|
|
put_uobj_write(uobj);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
idr_remove_uobj(&ib_uverbs_ah_idr, uobj);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_del(&uobj->list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
put_uobj(uobj);
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_attach_mcast cmd;
|
|
struct ib_qp *qp;
|
|
struct ib_uqp_object *obj;
|
|
struct ib_uverbs_mcast_entry *mcast;
|
|
int ret;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
qp = idr_write_qp(cmd.qp_handle, file->ucontext);
|
|
if (!qp)
|
|
return -EINVAL;
|
|
|
|
obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
|
|
|
|
list_for_each_entry(mcast, &obj->mcast_list, list)
|
|
if (cmd.mlid == mcast->lid &&
|
|
!memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
|
|
ret = 0;
|
|
goto out_put;
|
|
}
|
|
|
|
mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
|
|
if (!mcast) {
|
|
ret = -ENOMEM;
|
|
goto out_put;
|
|
}
|
|
|
|
mcast->lid = cmd.mlid;
|
|
memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
|
|
|
|
ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
|
|
if (!ret)
|
|
list_add_tail(&mcast->list, &obj->mcast_list);
|
|
else
|
|
kfree(mcast);
|
|
|
|
out_put:
|
|
put_qp_write(qp);
|
|
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_detach_mcast cmd;
|
|
struct ib_uqp_object *obj;
|
|
struct ib_qp *qp;
|
|
struct ib_uverbs_mcast_entry *mcast;
|
|
int ret = -EINVAL;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
qp = idr_write_qp(cmd.qp_handle, file->ucontext);
|
|
if (!qp)
|
|
return -EINVAL;
|
|
|
|
ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid);
|
|
if (ret)
|
|
goto out_put;
|
|
|
|
obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
|
|
|
|
list_for_each_entry(mcast, &obj->mcast_list, list)
|
|
if (cmd.mlid == mcast->lid &&
|
|
!memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
|
|
list_del(&mcast->list);
|
|
kfree(mcast);
|
|
break;
|
|
}
|
|
|
|
out_put:
|
|
put_qp_write(qp);
|
|
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
|
|
union ib_flow_spec *ib_spec)
|
|
{
|
|
if (kern_spec->reserved)
|
|
return -EINVAL;
|
|
|
|
ib_spec->type = kern_spec->type;
|
|
|
|
switch (ib_spec->type) {
|
|
case IB_FLOW_SPEC_ETH:
|
|
ib_spec->eth.size = sizeof(struct ib_flow_spec_eth);
|
|
if (ib_spec->eth.size != kern_spec->eth.size)
|
|
return -EINVAL;
|
|
memcpy(&ib_spec->eth.val, &kern_spec->eth.val,
|
|
sizeof(struct ib_flow_eth_filter));
|
|
memcpy(&ib_spec->eth.mask, &kern_spec->eth.mask,
|
|
sizeof(struct ib_flow_eth_filter));
|
|
break;
|
|
case IB_FLOW_SPEC_IPV4:
|
|
ib_spec->ipv4.size = sizeof(struct ib_flow_spec_ipv4);
|
|
if (ib_spec->ipv4.size != kern_spec->ipv4.size)
|
|
return -EINVAL;
|
|
memcpy(&ib_spec->ipv4.val, &kern_spec->ipv4.val,
|
|
sizeof(struct ib_flow_ipv4_filter));
|
|
memcpy(&ib_spec->ipv4.mask, &kern_spec->ipv4.mask,
|
|
sizeof(struct ib_flow_ipv4_filter));
|
|
break;
|
|
case IB_FLOW_SPEC_TCP:
|
|
case IB_FLOW_SPEC_UDP:
|
|
ib_spec->tcp_udp.size = sizeof(struct ib_flow_spec_tcp_udp);
|
|
if (ib_spec->tcp_udp.size != kern_spec->tcp_udp.size)
|
|
return -EINVAL;
|
|
memcpy(&ib_spec->tcp_udp.val, &kern_spec->tcp_udp.val,
|
|
sizeof(struct ib_flow_tcp_udp_filter));
|
|
memcpy(&ib_spec->tcp_udp.mask, &kern_spec->tcp_udp.mask,
|
|
sizeof(struct ib_flow_tcp_udp_filter));
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
|
|
struct ib_udata *ucore,
|
|
struct ib_udata *uhw)
|
|
{
|
|
struct ib_uverbs_create_flow cmd;
|
|
struct ib_uverbs_create_flow_resp resp;
|
|
struct ib_uobject *uobj;
|
|
struct ib_flow *flow_id;
|
|
struct ib_uverbs_flow_attr *kern_flow_attr;
|
|
struct ib_flow_attr *flow_attr;
|
|
struct ib_qp *qp;
|
|
int err = 0;
|
|
void *kern_spec;
|
|
void *ib_spec;
|
|
int i;
|
|
|
|
if (ucore->inlen < sizeof(cmd))
|
|
return -EINVAL;
|
|
|
|
if (ucore->outlen < sizeof(resp))
|
|
return -ENOSPC;
|
|
|
|
err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
|
|
if (err)
|
|
return err;
|
|
|
|
ucore->inbuf += sizeof(cmd);
|
|
ucore->inlen -= sizeof(cmd);
|
|
|
|
if (cmd.comp_mask)
|
|
return -EINVAL;
|
|
|
|
if ((cmd.flow_attr.type == IB_FLOW_ATTR_SNIFFER &&
|
|
!capable(CAP_NET_ADMIN)) || !capable(CAP_NET_RAW))
|
|
return -EPERM;
|
|
|
|
if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
|
|
return -EINVAL;
|
|
|
|
if (cmd.flow_attr.size > ucore->inlen ||
|
|
cmd.flow_attr.size >
|
|
(cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
|
|
return -EINVAL;
|
|
|
|
if (cmd.flow_attr.reserved[0] ||
|
|
cmd.flow_attr.reserved[1])
|
|
return -EINVAL;
|
|
|
|
if (cmd.flow_attr.num_of_specs) {
|
|
kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
|
|
GFP_KERNEL);
|
|
if (!kern_flow_attr)
|
|
return -ENOMEM;
|
|
|
|
memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr));
|
|
err = ib_copy_from_udata(kern_flow_attr + 1, ucore,
|
|
cmd.flow_attr.size);
|
|
if (err)
|
|
goto err_free_attr;
|
|
} else {
|
|
kern_flow_attr = &cmd.flow_attr;
|
|
}
|
|
|
|
uobj = kmalloc(sizeof(*uobj), GFP_KERNEL);
|
|
if (!uobj) {
|
|
err = -ENOMEM;
|
|
goto err_free_attr;
|
|
}
|
|
init_uobj(uobj, 0, file->ucontext, &rule_lock_class);
|
|
down_write(&uobj->mutex);
|
|
|
|
qp = idr_read_qp(cmd.qp_handle, file->ucontext);
|
|
if (!qp) {
|
|
err = -EINVAL;
|
|
goto err_uobj;
|
|
}
|
|
|
|
flow_attr = kmalloc(sizeof(*flow_attr) + cmd.flow_attr.size, GFP_KERNEL);
|
|
if (!flow_attr) {
|
|
err = -ENOMEM;
|
|
goto err_put;
|
|
}
|
|
|
|
flow_attr->type = kern_flow_attr->type;
|
|
flow_attr->priority = kern_flow_attr->priority;
|
|
flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
|
|
flow_attr->port = kern_flow_attr->port;
|
|
flow_attr->flags = kern_flow_attr->flags;
|
|
flow_attr->size = sizeof(*flow_attr);
|
|
|
|
kern_spec = kern_flow_attr + 1;
|
|
ib_spec = flow_attr + 1;
|
|
for (i = 0; i < flow_attr->num_of_specs &&
|
|
cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) &&
|
|
cmd.flow_attr.size >=
|
|
((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) {
|
|
err = kern_spec_to_ib_spec(kern_spec, ib_spec);
|
|
if (err)
|
|
goto err_free;
|
|
flow_attr->size +=
|
|
((union ib_flow_spec *) ib_spec)->size;
|
|
cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size;
|
|
kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size;
|
|
ib_spec += ((union ib_flow_spec *) ib_spec)->size;
|
|
}
|
|
if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
|
|
pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
|
|
i, cmd.flow_attr.size);
|
|
err = -EINVAL;
|
|
goto err_free;
|
|
}
|
|
flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER);
|
|
if (IS_ERR(flow_id)) {
|
|
err = PTR_ERR(flow_id);
|
|
goto err_free;
|
|
}
|
|
flow_id->qp = qp;
|
|
flow_id->uobject = uobj;
|
|
uobj->object = flow_id;
|
|
|
|
err = idr_add_uobj(&ib_uverbs_rule_idr, uobj);
|
|
if (err)
|
|
goto destroy_flow;
|
|
|
|
memset(&resp, 0, sizeof(resp));
|
|
resp.flow_handle = uobj->id;
|
|
|
|
err = ib_copy_to_udata(ucore,
|
|
&resp, sizeof(resp));
|
|
if (err)
|
|
goto err_copy;
|
|
|
|
put_qp_read(qp);
|
|
mutex_lock(&file->mutex);
|
|
list_add_tail(&uobj->list, &file->ucontext->rule_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
uobj->live = 1;
|
|
|
|
up_write(&uobj->mutex);
|
|
kfree(flow_attr);
|
|
if (cmd.flow_attr.num_of_specs)
|
|
kfree(kern_flow_attr);
|
|
return 0;
|
|
err_copy:
|
|
idr_remove_uobj(&ib_uverbs_rule_idr, uobj);
|
|
destroy_flow:
|
|
ib_destroy_flow(flow_id);
|
|
err_free:
|
|
kfree(flow_attr);
|
|
err_put:
|
|
put_qp_read(qp);
|
|
err_uobj:
|
|
put_uobj_write(uobj);
|
|
err_free_attr:
|
|
if (cmd.flow_attr.num_of_specs)
|
|
kfree(kern_flow_attr);
|
|
return err;
|
|
}
|
|
|
|
int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file,
|
|
struct ib_udata *ucore,
|
|
struct ib_udata *uhw)
|
|
{
|
|
struct ib_uverbs_destroy_flow cmd;
|
|
struct ib_flow *flow_id;
|
|
struct ib_uobject *uobj;
|
|
int ret;
|
|
|
|
if (ucore->inlen < sizeof(cmd))
|
|
return -EINVAL;
|
|
|
|
ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (cmd.comp_mask)
|
|
return -EINVAL;
|
|
|
|
uobj = idr_write_uobj(&ib_uverbs_rule_idr, cmd.flow_handle,
|
|
file->ucontext);
|
|
if (!uobj)
|
|
return -EINVAL;
|
|
flow_id = uobj->object;
|
|
|
|
ret = ib_destroy_flow(flow_id);
|
|
if (!ret)
|
|
uobj->live = 0;
|
|
|
|
put_uobj_write(uobj);
|
|
|
|
idr_remove_uobj(&ib_uverbs_rule_idr, uobj);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_del(&uobj->list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
put_uobj(uobj);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __uverbs_create_xsrq(struct ib_uverbs_file *file,
|
|
struct ib_uverbs_create_xsrq *cmd,
|
|
struct ib_udata *udata)
|
|
{
|
|
struct ib_uverbs_create_srq_resp resp;
|
|
struct ib_usrq_object *obj;
|
|
struct ib_pd *pd;
|
|
struct ib_srq *srq;
|
|
struct ib_uobject *uninitialized_var(xrcd_uobj);
|
|
struct ib_srq_init_attr attr;
|
|
int ret;
|
|
|
|
obj = kmalloc(sizeof *obj, GFP_KERNEL);
|
|
if (!obj)
|
|
return -ENOMEM;
|
|
|
|
init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, &srq_lock_class);
|
|
down_write(&obj->uevent.uobject.mutex);
|
|
|
|
if (cmd->srq_type == IB_SRQT_XRC) {
|
|
attr.ext.xrc.xrcd = idr_read_xrcd(cmd->xrcd_handle, file->ucontext, &xrcd_uobj);
|
|
if (!attr.ext.xrc.xrcd) {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
|
|
atomic_inc(&obj->uxrcd->refcnt);
|
|
|
|
attr.ext.xrc.cq = idr_read_cq(cmd->cq_handle, file->ucontext, 0);
|
|
if (!attr.ext.xrc.cq) {
|
|
ret = -EINVAL;
|
|
goto err_put_xrcd;
|
|
}
|
|
}
|
|
|
|
pd = idr_read_pd(cmd->pd_handle, file->ucontext);
|
|
if (!pd) {
|
|
ret = -EINVAL;
|
|
goto err_put_cq;
|
|
}
|
|
|
|
attr.event_handler = ib_uverbs_srq_event_handler;
|
|
attr.srq_context = file;
|
|
attr.srq_type = cmd->srq_type;
|
|
attr.attr.max_wr = cmd->max_wr;
|
|
attr.attr.max_sge = cmd->max_sge;
|
|
attr.attr.srq_limit = cmd->srq_limit;
|
|
|
|
obj->uevent.events_reported = 0;
|
|
INIT_LIST_HEAD(&obj->uevent.event_list);
|
|
|
|
srq = pd->device->create_srq(pd, &attr, udata);
|
|
if (IS_ERR(srq)) {
|
|
ret = PTR_ERR(srq);
|
|
goto err_put;
|
|
}
|
|
|
|
srq->device = pd->device;
|
|
srq->pd = pd;
|
|
srq->srq_type = cmd->srq_type;
|
|
srq->uobject = &obj->uevent.uobject;
|
|
srq->event_handler = attr.event_handler;
|
|
srq->srq_context = attr.srq_context;
|
|
|
|
if (cmd->srq_type == IB_SRQT_XRC) {
|
|
srq->ext.xrc.cq = attr.ext.xrc.cq;
|
|
srq->ext.xrc.xrcd = attr.ext.xrc.xrcd;
|
|
atomic_inc(&attr.ext.xrc.cq->usecnt);
|
|
atomic_inc(&attr.ext.xrc.xrcd->usecnt);
|
|
}
|
|
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_set(&srq->usecnt, 0);
|
|
|
|
obj->uevent.uobject.object = srq;
|
|
ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject);
|
|
if (ret)
|
|
goto err_destroy;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
resp.srq_handle = obj->uevent.uobject.id;
|
|
resp.max_wr = attr.attr.max_wr;
|
|
resp.max_sge = attr.attr.max_sge;
|
|
if (cmd->srq_type == IB_SRQT_XRC)
|
|
resp.srqn = srq->ext.xrc.srq_num;
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd->response,
|
|
&resp, sizeof resp)) {
|
|
ret = -EFAULT;
|
|
goto err_copy;
|
|
}
|
|
|
|
if (cmd->srq_type == IB_SRQT_XRC) {
|
|
put_uobj_read(xrcd_uobj);
|
|
put_cq_read(attr.ext.xrc.cq);
|
|
}
|
|
put_pd_read(pd);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_add_tail(&obj->uevent.uobject.list, &file->ucontext->srq_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
obj->uevent.uobject.live = 1;
|
|
|
|
up_write(&obj->uevent.uobject.mutex);
|
|
|
|
return 0;
|
|
|
|
err_copy:
|
|
idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject);
|
|
|
|
err_destroy:
|
|
ib_destroy_srq(srq);
|
|
|
|
err_put:
|
|
put_pd_read(pd);
|
|
|
|
err_put_cq:
|
|
if (cmd->srq_type == IB_SRQT_XRC)
|
|
put_cq_read(attr.ext.xrc.cq);
|
|
|
|
err_put_xrcd:
|
|
if (cmd->srq_type == IB_SRQT_XRC) {
|
|
atomic_dec(&obj->uxrcd->refcnt);
|
|
put_uobj_read(xrcd_uobj);
|
|
}
|
|
|
|
err:
|
|
put_uobj_write(&obj->uevent.uobject);
|
|
return ret;
|
|
}
|
|
|
|
ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_create_srq cmd;
|
|
struct ib_uverbs_create_xsrq xcmd;
|
|
struct ib_uverbs_create_srq_resp resp;
|
|
struct ib_udata udata;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
xcmd.response = cmd.response;
|
|
xcmd.user_handle = cmd.user_handle;
|
|
xcmd.srq_type = IB_SRQT_BASIC;
|
|
xcmd.pd_handle = cmd.pd_handle;
|
|
xcmd.max_wr = cmd.max_wr;
|
|
xcmd.max_sge = cmd.max_sge;
|
|
xcmd.srq_limit = cmd.srq_limit;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd,
|
|
(unsigned long) cmd.response + sizeof resp,
|
|
in_len - sizeof cmd, out_len - sizeof resp);
|
|
|
|
ret = __uverbs_create_xsrq(file, &xcmd, &udata);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len, int out_len)
|
|
{
|
|
struct ib_uverbs_create_xsrq cmd;
|
|
struct ib_uverbs_create_srq_resp resp;
|
|
struct ib_udata udata;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd,
|
|
(unsigned long) cmd.response + sizeof resp,
|
|
in_len - sizeof cmd, out_len - sizeof resp);
|
|
|
|
ret = __uverbs_create_xsrq(file, &cmd, &udata);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_modify_srq cmd;
|
|
struct ib_udata udata;
|
|
struct ib_srq *srq;
|
|
struct ib_srq_attr attr;
|
|
int ret;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
|
|
out_len);
|
|
|
|
srq = idr_read_srq(cmd.srq_handle, file->ucontext);
|
|
if (!srq)
|
|
return -EINVAL;
|
|
|
|
attr.max_wr = cmd.max_wr;
|
|
attr.srq_limit = cmd.srq_limit;
|
|
|
|
ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata);
|
|
|
|
put_srq_read(srq);
|
|
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file,
|
|
const char __user *buf,
|
|
int in_len, int out_len)
|
|
{
|
|
struct ib_uverbs_query_srq cmd;
|
|
struct ib_uverbs_query_srq_resp resp;
|
|
struct ib_srq_attr attr;
|
|
struct ib_srq *srq;
|
|
int ret;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
srq = idr_read_srq(cmd.srq_handle, file->ucontext);
|
|
if (!srq)
|
|
return -EINVAL;
|
|
|
|
ret = ib_query_srq(srq, &attr);
|
|
|
|
put_srq_read(srq);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
|
|
resp.max_wr = attr.max_wr;
|
|
resp.max_sge = attr.max_sge;
|
|
resp.srq_limit = attr.srq_limit;
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp))
|
|
return -EFAULT;
|
|
|
|
return in_len;
|
|
}
|
|
|
|
ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
|
|
const char __user *buf, int in_len,
|
|
int out_len)
|
|
{
|
|
struct ib_uverbs_destroy_srq cmd;
|
|
struct ib_uverbs_destroy_srq_resp resp;
|
|
struct ib_uobject *uobj;
|
|
struct ib_srq *srq;
|
|
struct ib_uevent_object *obj;
|
|
int ret = -EINVAL;
|
|
struct ib_usrq_object *us;
|
|
enum ib_srq_type srq_type;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext);
|
|
if (!uobj)
|
|
return -EINVAL;
|
|
srq = uobj->object;
|
|
obj = container_of(uobj, struct ib_uevent_object, uobject);
|
|
srq_type = srq->srq_type;
|
|
|
|
ret = ib_destroy_srq(srq);
|
|
if (!ret)
|
|
uobj->live = 0;
|
|
|
|
put_uobj_write(uobj);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (srq_type == IB_SRQT_XRC) {
|
|
us = container_of(obj, struct ib_usrq_object, uevent);
|
|
atomic_dec(&us->uxrcd->refcnt);
|
|
}
|
|
|
|
idr_remove_uobj(&ib_uverbs_srq_idr, uobj);
|
|
|
|
mutex_lock(&file->mutex);
|
|
list_del(&uobj->list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
ib_uverbs_release_uevent(file, obj);
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
resp.events_reported = obj->events_reported;
|
|
|
|
put_uobj(uobj);
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response,
|
|
&resp, sizeof resp))
|
|
ret = -EFAULT;
|
|
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
|
|
struct ib_udata *ucore,
|
|
struct ib_udata *uhw)
|
|
{
|
|
struct ib_uverbs_ex_query_device_resp resp;
|
|
struct ib_uverbs_ex_query_device cmd;
|
|
struct ib_device_attr attr;
|
|
struct ib_device *device;
|
|
int err;
|
|
|
|
device = file->device->ib_dev;
|
|
if (ucore->inlen < sizeof(cmd))
|
|
return -EINVAL;
|
|
|
|
err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
|
|
if (err)
|
|
return err;
|
|
|
|
if (cmd.comp_mask)
|
|
return -EINVAL;
|
|
|
|
if (cmd.reserved)
|
|
return -EINVAL;
|
|
|
|
resp.response_length = offsetof(typeof(resp), odp_caps);
|
|
|
|
if (ucore->outlen < resp.response_length)
|
|
return -ENOSPC;
|
|
|
|
err = device->query_device(device, &attr);
|
|
if (err)
|
|
return err;
|
|
|
|
copy_query_dev_fields(file, &resp.base, &attr);
|
|
resp.comp_mask = 0;
|
|
|
|
if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps))
|
|
goto end;
|
|
|
|
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
|
|
resp.odp_caps.general_caps = attr.odp_caps.general_caps;
|
|
resp.odp_caps.per_transport_caps.rc_odp_caps =
|
|
attr.odp_caps.per_transport_caps.rc_odp_caps;
|
|
resp.odp_caps.per_transport_caps.uc_odp_caps =
|
|
attr.odp_caps.per_transport_caps.uc_odp_caps;
|
|
resp.odp_caps.per_transport_caps.ud_odp_caps =
|
|
attr.odp_caps.per_transport_caps.ud_odp_caps;
|
|
resp.odp_caps.reserved = 0;
|
|
#else
|
|
memset(&resp.odp_caps, 0, sizeof(resp.odp_caps));
|
|
#endif
|
|
resp.response_length += sizeof(resp.odp_caps);
|
|
|
|
end:
|
|
err = ib_copy_to_udata(ucore, &resp, resp.response_length);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|