![Steve Wise](/assets/img/avatar_default.png)
This patch adds support for the IB "base memory management extension" (BMME) and the equivalent iWARP operations (which the iWARP verbs mandates all devices must implement). The new operations are: - Allocate an ib_mr for use in fast register work requests. - Allocate/free a physical buffer lists for use in fast register work requests. This allows device drivers to allocate this memory as needed for use in posting send requests (eg via dma_alloc_coherent). - New send queue work requests: * send with remote invalidate * fast register memory region * local invalidate memory region * RDMA read with invalidate local memory region (iWARP only) Consumer interface details: - A new device capability flag IB_DEVICE_MEM_MGT_EXTENSIONS is added to indicate device support for these features. - New send work request opcodes IB_WR_FAST_REG_MR, IB_WR_LOCAL_INV, IB_WR_RDMA_READ_WITH_INV are added. - A new consumer API function, ib_alloc_mr() is added to allocate fast register memory regions. - New consumer API functions, ib_alloc_fast_reg_page_list() and ib_free_fast_reg_page_list() are added to allocate and free device-specific memory for fast registration page lists. - A new consumer API function, ib_update_fast_reg_key(), is added to allow the key portion of the R_Key and L_Key of a fast registration MR to be updated. Consumers call this if desired before posting a IB_WR_FAST_REG_MR work request. Consumers can use this as follows: - MR is allocated with ib_alloc_mr(). - Page list memory is allocated with ib_alloc_fast_reg_page_list(). - MR R_Key/L_Key "key" field is updated with ib_update_fast_reg_key(). - MR made VALID and bound to a specific page list via ib_post_send(IB_WR_FAST_REG_MR) - MR made INVALID via ib_post_send(IB_WR_LOCAL_INV), ib_post_send(IB_WR_RDMA_READ_WITH_INV) or an incoming send with invalidate operation. - MR is deallocated with ib_dereg_mr() - page lists dealloced via ib_free_fast_reg_page_list(). Applications can allocate a fast register MR once, and then can repeatedly bind the MR to different physical block lists (PBLs) via posting work requests to a send queue (SQ). For each outstanding MR-to-PBL binding in the SQ pipe, a fast_reg_page_list needs to be allocated (the fast_reg_page_list is owned by the low-level driver from the consumer posting a work request until the request completes). Thus pipelining can be achieved while still allowing device-specific page_list processing. The 32-bit fast register memory key/STag is composed of a 24-bit index and an 8-bit key. The application can change the key each time it fast registers thus allowing more control over the peer's use of the key/STag (ie it can effectively be changed each time the rkey is rebound to a page list). Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2166 lines
53 KiB
C
2166 lines
53 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 <asm/uaccess.h>
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#include "uverbs.h"
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static struct lock_class_key pd_lock_key;
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static struct lock_class_key mr_lock_key;
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static struct lock_class_key cq_lock_key;
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static struct lock_class_key qp_lock_key;
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static struct lock_class_key ah_lock_key;
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static struct lock_class_key srq_lock_key;
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#define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \
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do { \
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(udata)->inbuf = (void __user *) (ibuf); \
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(udata)->outbuf = (void __user *) (obuf); \
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(udata)->inlen = (ilen); \
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(udata)->outlen = (olen); \
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} while (0)
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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 lock_class_key *key)
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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(&uobj->mutex, key);
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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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retry:
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if (!idr_pre_get(idr, GFP_KERNEL))
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return -ENOMEM;
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spin_lock(&ib_uverbs_idr_lock);
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ret = idr_get_new(idr, uobj, &uobj->id);
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spin_unlock(&ib_uverbs_idr_lock);
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if (ret == -EAGAIN)
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goto retry;
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return ret;
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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 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 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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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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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(file->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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ucontext->closing = 0;
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resp.num_comp_vectors = file->device->num_comp_vectors;
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filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd);
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if (IS_ERR(filp)) {
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ret = PTR_ERR(filp);
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goto err_free;
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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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put_unused_fd(resp.async_fd);
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fput(filp);
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err_free:
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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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ssize_t ib_uverbs_query_device(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_query_device cmd;
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struct ib_uverbs_query_device_resp resp;
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struct ib_device_attr attr;
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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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ret = ib_query_device(file->device->ib_dev, &attr);
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if (ret)
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return ret;
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memset(&resp, 0, sizeof resp);
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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;
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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;
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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;
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resp.max_pd = attr.max_pd;
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resp.max_qp_rd_atom = attr.max_qp_rd_atom;
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resp.max_ee_rd_atom = attr.max_ee_rd_atom;
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resp.max_res_rd_atom = attr.max_res_rd_atom;
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resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom;
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resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom;
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resp.atomic_cap = attr.atomic_cap;
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resp.max_ee = attr.max_ee;
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resp.max_rdd = attr.max_rdd;
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resp.max_mw = attr.max_mw;
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resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp;
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resp.max_raw_ethy_qp = attr.max_raw_ethy_qp;
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resp.max_mcast_grp = attr.max_mcast_grp;
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resp.max_mcast_qp_attach = attr.max_mcast_qp_attach;
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resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach;
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resp.max_ah = attr.max_ah;
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resp.max_fmr = attr.max_fmr;
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resp.max_map_per_fmr = attr.max_map_per_fmr;
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resp.max_srq = attr.max_srq;
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resp.max_srq_wr = attr.max_srq_wr;
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resp.max_srq_sge = attr.max_srq_sge;
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resp.max_pkeys = attr.max_pkeys;
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resp.local_ca_ack_delay = attr.local_ca_ack_delay;
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resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt;
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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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return -EFAULT;
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return in_len;
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}
|
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|
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ssize_t ib_uverbs_query_port(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_query_port cmd;
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struct ib_uverbs_query_port_resp resp;
|
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struct ib_port_attr attr;
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int ret;
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|
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if (out_len < sizeof resp)
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return -ENOSPC;
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|
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if (copy_from_user(&cmd, buf, sizeof cmd))
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return -EFAULT;
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|
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ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr);
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if (ret)
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return ret;
|
|
|
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memset(&resp, 0, sizeof resp);
|
|
|
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resp.state = attr.state;
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resp.max_mtu = attr.max_mtu;
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resp.active_mtu = attr.active_mtu;
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|
resp.gid_tbl_len = attr.gid_tbl_len;
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|
resp.port_cap_flags = attr.port_cap_flags;
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resp.max_msg_sz = attr.max_msg_sz;
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|
resp.bad_pkey_cntr = attr.bad_pkey_cntr;
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|
resp.qkey_viol_cntr = attr.qkey_viol_cntr;
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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;
|
|
|
|
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_key);
|
|
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;
|
|
}
|
|
|
|
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;
|
|
|
|
/*
|
|
* Local write permission is required if remote write or
|
|
* remote atomic permission is also requested.
|
|
*/
|
|
if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
|
|
!(cmd.access_flags & IB_ACCESS_LOCAL_WRITE))
|
|
return -EINVAL;
|
|
|
|
uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
|
|
if (!uobj)
|
|
return -ENOMEM;
|
|
|
|
init_uobj(uobj, 0, file->ucontext, &mr_lock_key);
|
|
down_write(&uobj->mutex);
|
|
|
|
pd = idr_read_pd(cmd.pd_handle, file->ucontext);
|
|
if (!pd) {
|
|
ret = -EINVAL;
|
|
goto err_free;
|
|
}
|
|
|
|
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_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_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;
|
|
|
|
if (out_len < sizeof resp)
|
|
return -ENOSPC;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd);
|
|
if (IS_ERR(filp))
|
|
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_key);
|
|
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;
|
|
}
|
|
|
|
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;
|
|
struct ib_cq *cq;
|
|
struct ib_wc *wc;
|
|
int ret = 0;
|
|
int i;
|
|
int rsize;
|
|
|
|
if (copy_from_user(&cmd, buf, sizeof cmd))
|
|
return -EFAULT;
|
|
|
|
wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL);
|
|
if (!wc)
|
|
return -ENOMEM;
|
|
|
|
rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc);
|
|
resp = kmalloc(rsize, GFP_KERNEL);
|
|
if (!resp) {
|
|
ret = -ENOMEM;
|
|
goto out_wc;
|
|
}
|
|
|
|
cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
|
|
if (!cq) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
resp->count = ib_poll_cq(cq, cmd.ne, wc);
|
|
|
|
put_cq_read(cq);
|
|
|
|
for (i = 0; i < resp->count; i++) {
|
|
resp->wc[i].wr_id = wc[i].wr_id;
|
|
resp->wc[i].status = wc[i].status;
|
|
resp->wc[i].opcode = wc[i].opcode;
|
|
resp->wc[i].vendor_err = wc[i].vendor_err;
|
|
resp->wc[i].byte_len = wc[i].byte_len;
|
|
resp->wc[i].ex.imm_data = (__u32 __force) wc[i].ex.imm_data;
|
|
resp->wc[i].qp_num = wc[i].qp->qp_num;
|
|
resp->wc[i].src_qp = wc[i].src_qp;
|
|
resp->wc[i].wc_flags = wc[i].wc_flags;
|
|
resp->wc[i].pkey_index = wc[i].pkey_index;
|
|
resp->wc[i].slid = wc[i].slid;
|
|
resp->wc[i].sl = wc[i].sl;
|
|
resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits;
|
|
resp->wc[i].port_num = wc[i].port_num;
|
|
}
|
|
|
|
if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize))
|
|
ret = -EFAULT;
|
|
|
|
out:
|
|
kfree(resp);
|
|
|
|
out_wc:
|
|
kfree(wc);
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
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_pd *pd;
|
|
struct ib_cq *scq, *rcq;
|
|
struct ib_srq *srq;
|
|
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;
|
|
|
|
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_key);
|
|
down_write(&obj->uevent.uobject.mutex);
|
|
|
|
srq = cmd.is_srq ? idr_read_srq(cmd.srq_handle, file->ucontext) : NULL;
|
|
pd = idr_read_pd(cmd.pd_handle, file->ucontext);
|
|
scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, 0);
|
|
rcq = cmd.recv_cq_handle == cmd.send_cq_handle ?
|
|
scq : idr_read_cq(cmd.recv_cq_handle, file->ucontext, 1);
|
|
|
|
if (!pd || !scq || !rcq || (cmd.is_srq && !srq)) {
|
|
ret = -EINVAL;
|
|
goto err_put;
|
|
}
|
|
|
|
attr.event_handler = ib_uverbs_qp_event_handler;
|
|
attr.qp_context = file;
|
|
attr.send_cq = scq;
|
|
attr.recv_cq = rcq;
|
|
attr.srq = srq;
|
|
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);
|
|
|
|
qp = pd->device->create_qp(pd, &attr, &udata);
|
|
if (IS_ERR(qp)) {
|
|
ret = PTR_ERR(qp);
|
|
goto err_put;
|
|
}
|
|
|
|
qp->device = pd->device;
|
|
qp->pd = pd;
|
|
qp->send_cq = attr.send_cq;
|
|
qp->recv_cq = attr.recv_cq;
|
|
qp->srq = attr.srq;
|
|
qp->uobject = &obj->uevent.uobject;
|
|
qp->event_handler = attr.event_handler;
|
|
qp->qp_context = attr.qp_context;
|
|
qp->qp_type = attr.qp_type;
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_inc(&attr.send_cq->usecnt);
|
|
atomic_inc(&attr.recv_cq->usecnt);
|
|
if (attr.srq)
|
|
atomic_inc(&attr.srq->usecnt);
|
|
|
|
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;
|
|
}
|
|
|
|
put_pd_read(pd);
|
|
put_cq_read(scq);
|
|
if (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 (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_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;
|
|
}
|
|
|
|
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;
|
|
|
|
ret = qp->device->modify_qp(qp, attr, cmd.attr_mask, &udata);
|
|
|
|
put_qp_read(qp);
|
|
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = in_len;
|
|
|
|
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;
|
|
|
|
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;
|
|
} 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, 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, 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_key);
|
|
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;
|
|
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_read_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_read(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_read_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_read(qp);
|
|
|
|
return ret ? ret : in_len;
|
|
}
|
|
|
|
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_srq_resp resp;
|
|
struct ib_udata udata;
|
|
struct ib_uevent_object *obj;
|
|
struct ib_pd *pd;
|
|
struct ib_srq *srq;
|
|
struct ib_srq_init_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->uobject, cmd.user_handle, file->ucontext, &srq_lock_key);
|
|
down_write(&obj->uobject.mutex);
|
|
|
|
pd = idr_read_pd(cmd.pd_handle, file->ucontext);
|
|
if (!pd) {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
attr.event_handler = ib_uverbs_srq_event_handler;
|
|
attr.srq_context = file;
|
|
attr.attr.max_wr = cmd.max_wr;
|
|
attr.attr.max_sge = cmd.max_sge;
|
|
attr.attr.srq_limit = cmd.srq_limit;
|
|
|
|
obj->events_reported = 0;
|
|
INIT_LIST_HEAD(&obj->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->uobject = &obj->uobject;
|
|
srq->event_handler = attr.event_handler;
|
|
srq->srq_context = attr.srq_context;
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_set(&srq->usecnt, 0);
|
|
|
|
obj->uobject.object = srq;
|
|
ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uobject);
|
|
if (ret)
|
|
goto err_destroy;
|
|
|
|
memset(&resp, 0, sizeof resp);
|
|
resp.srq_handle = obj->uobject.id;
|
|
resp.max_wr = attr.attr.max_wr;
|
|
resp.max_sge = attr.attr.max_sge;
|
|
|
|
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(&obj->uobject.list, &file->ucontext->srq_list);
|
|
mutex_unlock(&file->mutex);
|
|
|
|
obj->uobject.live = 1;
|
|
|
|
up_write(&obj->uobject.mutex);
|
|
|
|
return in_len;
|
|
|
|
err_copy:
|
|
idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uobject);
|
|
|
|
err_destroy:
|
|
ib_destroy_srq(srq);
|
|
|
|
err_put:
|
|
put_pd_read(pd);
|
|
|
|
err:
|
|
put_uobj_write(&obj->uobject);
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
|
|
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);
|
|
|
|
ret = ib_destroy_srq(srq);
|
|
if (!ret)
|
|
uobj->live = 0;
|
|
|
|
put_uobj_write(uobj);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
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;
|
|
}
|