2 * Copyright (c) 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
4 * Copyright (c) 2005 PathScale, Inc. All rights reserved.
5 * Copyright (c) 2006 Mellanox Technologies. All rights reserved.
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include <linux/file.h>
38 #include <linux/slab.h>
40 #include <asm/uaccess.h>
44 static struct lock_class_key pd_lock_key;
45 static struct lock_class_key mr_lock_key;
46 static struct lock_class_key cq_lock_key;
47 static struct lock_class_key qp_lock_key;
48 static struct lock_class_key ah_lock_key;
49 static struct lock_class_key srq_lock_key;
51 #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \
53 (udata)->inbuf = (void __user *) (ibuf); \
54 (udata)->outbuf = (void __user *) (obuf); \
55 (udata)->inlen = (ilen); \
56 (udata)->outlen = (olen); \
60 * The ib_uobject locking scheme is as follows:
62 * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it
63 * needs to be held during all idr operations. When an object is
64 * looked up, a reference must be taken on the object's kref before
67 * - Each object also has an rwsem. This rwsem must be held for
68 * reading while an operation that uses the object is performed.
69 * For example, while registering an MR, the associated PD's
70 * uobject.mutex must be held for reading. The rwsem must be held
71 * for writing while initializing or destroying an object.
73 * - In addition, each object has a "live" flag. If this flag is not
74 * set, then lookups of the object will fail even if it is found in
75 * the idr. This handles a reader that blocks and does not acquire
76 * the rwsem until after the object is destroyed. The destroy
77 * operation will set the live flag to 0 and then drop the rwsem;
78 * this will allow the reader to acquire the rwsem, see that the
79 * live flag is 0, and then drop the rwsem and its reference to
80 * object. The underlying storage will not be freed until the last
81 * reference to the object is dropped.
84 static void init_uobj(struct ib_uobject *uobj, u64 user_handle,
85 struct ib_ucontext *context, struct lock_class_key *key)
87 uobj->user_handle = user_handle;
88 uobj->context = context;
89 kref_init(&uobj->ref);
90 init_rwsem(&uobj->mutex);
91 lockdep_set_class(&uobj->mutex, key);
95 static void release_uobj(struct kref *kref)
97 kfree(container_of(kref, struct ib_uobject, ref));
100 static void put_uobj(struct ib_uobject *uobj)
102 kref_put(&uobj->ref, release_uobj);
105 static void put_uobj_read(struct ib_uobject *uobj)
107 up_read(&uobj->mutex);
111 static void put_uobj_write(struct ib_uobject *uobj)
113 up_write(&uobj->mutex);
117 static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj)
122 if (!idr_pre_get(idr, GFP_KERNEL))
125 spin_lock(&ib_uverbs_idr_lock);
126 ret = idr_get_new(idr, uobj, &uobj->id);
127 spin_unlock(&ib_uverbs_idr_lock);
135 void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj)
137 spin_lock(&ib_uverbs_idr_lock);
138 idr_remove(idr, uobj->id);
139 spin_unlock(&ib_uverbs_idr_lock);
142 static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id,
143 struct ib_ucontext *context)
145 struct ib_uobject *uobj;
147 spin_lock(&ib_uverbs_idr_lock);
148 uobj = idr_find(idr, id);
150 if (uobj->context == context)
151 kref_get(&uobj->ref);
155 spin_unlock(&ib_uverbs_idr_lock);
160 static struct ib_uobject *idr_read_uobj(struct idr *idr, int id,
161 struct ib_ucontext *context, int nested)
163 struct ib_uobject *uobj;
165 uobj = __idr_get_uobj(idr, id, context);
170 down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING);
172 down_read(&uobj->mutex);
181 static struct ib_uobject *idr_write_uobj(struct idr *idr, int id,
182 struct ib_ucontext *context)
184 struct ib_uobject *uobj;
186 uobj = __idr_get_uobj(idr, id, context);
190 down_write(&uobj->mutex);
192 put_uobj_write(uobj);
199 static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context,
202 struct ib_uobject *uobj;
204 uobj = idr_read_uobj(idr, id, context, nested);
205 return uobj ? uobj->object : NULL;
208 static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context)
210 return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0);
213 static void put_pd_read(struct ib_pd *pd)
215 put_uobj_read(pd->uobject);
218 static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested)
220 return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested);
223 static void put_cq_read(struct ib_cq *cq)
225 put_uobj_read(cq->uobject);
228 static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context)
230 return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0);
233 static void put_ah_read(struct ib_ah *ah)
235 put_uobj_read(ah->uobject);
238 static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context)
240 return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0);
243 static void put_qp_read(struct ib_qp *qp)
245 put_uobj_read(qp->uobject);
248 static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context)
250 return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0);
253 static void put_srq_read(struct ib_srq *srq)
255 put_uobj_read(srq->uobject);
258 ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
259 const char __user *buf,
260 int in_len, int out_len)
262 struct ib_uverbs_get_context cmd;
263 struct ib_uverbs_get_context_resp resp;
264 struct ib_udata udata;
265 struct ib_device *ibdev = file->device->ib_dev;
266 struct ib_ucontext *ucontext;
270 if (out_len < sizeof resp)
273 if (copy_from_user(&cmd, buf, sizeof cmd))
276 mutex_lock(&file->mutex);
278 if (file->ucontext) {
283 INIT_UDATA(&udata, buf + sizeof cmd,
284 (unsigned long) cmd.response + sizeof resp,
285 in_len - sizeof cmd, out_len - sizeof resp);
287 ucontext = ibdev->alloc_ucontext(ibdev, &udata);
288 if (IS_ERR(ucontext)) {
289 ret = PTR_ERR(ucontext);
293 ucontext->device = ibdev;
294 INIT_LIST_HEAD(&ucontext->pd_list);
295 INIT_LIST_HEAD(&ucontext->mr_list);
296 INIT_LIST_HEAD(&ucontext->mw_list);
297 INIT_LIST_HEAD(&ucontext->cq_list);
298 INIT_LIST_HEAD(&ucontext->qp_list);
299 INIT_LIST_HEAD(&ucontext->srq_list);
300 INIT_LIST_HEAD(&ucontext->ah_list);
301 ucontext->closing = 0;
303 resp.num_comp_vectors = file->device->num_comp_vectors;
305 ret = get_unused_fd();
310 filp = ib_uverbs_alloc_event_file(file, 1);
316 if (copy_to_user((void __user *) (unsigned long) cmd.response,
317 &resp, sizeof resp)) {
322 file->async_file = filp->private_data;
324 INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev,
325 ib_uverbs_event_handler);
326 ret = ib_register_event_handler(&file->event_handler);
330 kref_get(&file->async_file->ref);
331 kref_get(&file->ref);
332 file->ucontext = ucontext;
334 fd_install(resp.async_fd, filp);
336 mutex_unlock(&file->mutex);
344 put_unused_fd(resp.async_fd);
347 ibdev->dealloc_ucontext(ucontext);
350 mutex_unlock(&file->mutex);
354 ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file,
355 const char __user *buf,
356 int in_len, int out_len)
358 struct ib_uverbs_query_device cmd;
359 struct ib_uverbs_query_device_resp resp;
360 struct ib_device_attr attr;
363 if (out_len < sizeof resp)
366 if (copy_from_user(&cmd, buf, sizeof cmd))
369 ret = ib_query_device(file->device->ib_dev, &attr);
373 memset(&resp, 0, sizeof resp);
375 resp.fw_ver = attr.fw_ver;
376 resp.node_guid = file->device->ib_dev->node_guid;
377 resp.sys_image_guid = attr.sys_image_guid;
378 resp.max_mr_size = attr.max_mr_size;
379 resp.page_size_cap = attr.page_size_cap;
380 resp.vendor_id = attr.vendor_id;
381 resp.vendor_part_id = attr.vendor_part_id;
382 resp.hw_ver = attr.hw_ver;
383 resp.max_qp = attr.max_qp;
384 resp.max_qp_wr = attr.max_qp_wr;
385 resp.device_cap_flags = attr.device_cap_flags;
386 resp.max_sge = attr.max_sge;
387 resp.max_sge_rd = attr.max_sge_rd;
388 resp.max_cq = attr.max_cq;
389 resp.max_cqe = attr.max_cqe;
390 resp.max_mr = attr.max_mr;
391 resp.max_pd = attr.max_pd;
392 resp.max_qp_rd_atom = attr.max_qp_rd_atom;
393 resp.max_ee_rd_atom = attr.max_ee_rd_atom;
394 resp.max_res_rd_atom = attr.max_res_rd_atom;
395 resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom;
396 resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom;
397 resp.atomic_cap = attr.atomic_cap;
398 resp.max_ee = attr.max_ee;
399 resp.max_rdd = attr.max_rdd;
400 resp.max_mw = attr.max_mw;
401 resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp;
402 resp.max_raw_ethy_qp = attr.max_raw_ethy_qp;
403 resp.max_mcast_grp = attr.max_mcast_grp;
404 resp.max_mcast_qp_attach = attr.max_mcast_qp_attach;
405 resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach;
406 resp.max_ah = attr.max_ah;
407 resp.max_fmr = attr.max_fmr;
408 resp.max_map_per_fmr = attr.max_map_per_fmr;
409 resp.max_srq = attr.max_srq;
410 resp.max_srq_wr = attr.max_srq_wr;
411 resp.max_srq_sge = attr.max_srq_sge;
412 resp.max_pkeys = attr.max_pkeys;
413 resp.local_ca_ack_delay = attr.local_ca_ack_delay;
414 resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt;
416 if (copy_to_user((void __user *) (unsigned long) cmd.response,
423 ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file,
424 const char __user *buf,
425 int in_len, int out_len)
427 struct ib_uverbs_query_port cmd;
428 struct ib_uverbs_query_port_resp resp;
429 struct ib_port_attr attr;
432 if (out_len < sizeof resp)
435 if (copy_from_user(&cmd, buf, sizeof cmd))
438 ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr);
442 memset(&resp, 0, sizeof resp);
444 resp.state = attr.state;
445 resp.max_mtu = attr.max_mtu;
446 resp.active_mtu = attr.active_mtu;
447 resp.gid_tbl_len = attr.gid_tbl_len;
448 resp.port_cap_flags = attr.port_cap_flags;
449 resp.max_msg_sz = attr.max_msg_sz;
450 resp.bad_pkey_cntr = attr.bad_pkey_cntr;
451 resp.qkey_viol_cntr = attr.qkey_viol_cntr;
452 resp.pkey_tbl_len = attr.pkey_tbl_len;
454 resp.sm_lid = attr.sm_lid;
456 resp.max_vl_num = attr.max_vl_num;
457 resp.sm_sl = attr.sm_sl;
458 resp.subnet_timeout = attr.subnet_timeout;
459 resp.init_type_reply = attr.init_type_reply;
460 resp.active_width = attr.active_width;
461 resp.active_speed = attr.active_speed;
462 resp.phys_state = attr.phys_state;
463 resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev,
466 if (copy_to_user((void __user *) (unsigned long) cmd.response,
473 ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
474 const char __user *buf,
475 int in_len, int out_len)
477 struct ib_uverbs_alloc_pd cmd;
478 struct ib_uverbs_alloc_pd_resp resp;
479 struct ib_udata udata;
480 struct ib_uobject *uobj;
484 if (out_len < sizeof resp)
487 if (copy_from_user(&cmd, buf, sizeof cmd))
490 INIT_UDATA(&udata, buf + sizeof cmd,
491 (unsigned long) cmd.response + sizeof resp,
492 in_len - sizeof cmd, out_len - sizeof resp);
494 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
498 init_uobj(uobj, 0, file->ucontext, &pd_lock_key);
499 down_write(&uobj->mutex);
501 pd = file->device->ib_dev->alloc_pd(file->device->ib_dev,
502 file->ucontext, &udata);
508 pd->device = file->device->ib_dev;
510 atomic_set(&pd->usecnt, 0);
513 ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj);
517 memset(&resp, 0, sizeof resp);
518 resp.pd_handle = uobj->id;
520 if (copy_to_user((void __user *) (unsigned long) cmd.response,
521 &resp, sizeof resp)) {
526 mutex_lock(&file->mutex);
527 list_add_tail(&uobj->list, &file->ucontext->pd_list);
528 mutex_unlock(&file->mutex);
532 up_write(&uobj->mutex);
537 idr_remove_uobj(&ib_uverbs_pd_idr, uobj);
543 put_uobj_write(uobj);
547 ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file,
548 const char __user *buf,
549 int in_len, int out_len)
551 struct ib_uverbs_dealloc_pd cmd;
552 struct ib_uobject *uobj;
555 if (copy_from_user(&cmd, buf, sizeof cmd))
558 uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext);
562 ret = ib_dealloc_pd(uobj->object);
566 put_uobj_write(uobj);
571 idr_remove_uobj(&ib_uverbs_pd_idr, uobj);
573 mutex_lock(&file->mutex);
574 list_del(&uobj->list);
575 mutex_unlock(&file->mutex);
582 ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
583 const char __user *buf, int in_len,
586 struct ib_uverbs_reg_mr cmd;
587 struct ib_uverbs_reg_mr_resp resp;
588 struct ib_udata udata;
589 struct ib_uobject *uobj;
594 if (out_len < sizeof resp)
597 if (copy_from_user(&cmd, buf, sizeof cmd))
600 INIT_UDATA(&udata, buf + sizeof cmd,
601 (unsigned long) cmd.response + sizeof resp,
602 in_len - sizeof cmd, out_len - sizeof resp);
604 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
608 * Local write permission is required if remote write or
609 * remote atomic permission is also requested.
611 if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
612 !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE))
615 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
619 init_uobj(uobj, 0, file->ucontext, &mr_lock_key);
620 down_write(&uobj->mutex);
622 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
628 mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
629 cmd.access_flags, &udata);
635 mr->device = pd->device;
638 atomic_inc(&pd->usecnt);
639 atomic_set(&mr->usecnt, 0);
642 ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj);
646 memset(&resp, 0, sizeof resp);
647 resp.lkey = mr->lkey;
648 resp.rkey = mr->rkey;
649 resp.mr_handle = uobj->id;
651 if (copy_to_user((void __user *) (unsigned long) cmd.response,
652 &resp, sizeof resp)) {
659 mutex_lock(&file->mutex);
660 list_add_tail(&uobj->list, &file->ucontext->mr_list);
661 mutex_unlock(&file->mutex);
665 up_write(&uobj->mutex);
670 idr_remove_uobj(&ib_uverbs_mr_idr, uobj);
679 put_uobj_write(uobj);
683 ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file,
684 const char __user *buf, int in_len,
687 struct ib_uverbs_dereg_mr cmd;
689 struct ib_uobject *uobj;
692 if (copy_from_user(&cmd, buf, sizeof cmd))
695 uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext);
701 ret = ib_dereg_mr(mr);
705 put_uobj_write(uobj);
710 idr_remove_uobj(&ib_uverbs_mr_idr, uobj);
712 mutex_lock(&file->mutex);
713 list_del(&uobj->list);
714 mutex_unlock(&file->mutex);
721 ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
722 const char __user *buf, int in_len,
725 struct ib_uverbs_create_comp_channel cmd;
726 struct ib_uverbs_create_comp_channel_resp resp;
730 if (out_len < sizeof resp)
733 if (copy_from_user(&cmd, buf, sizeof cmd))
736 ret = get_unused_fd();
741 filp = ib_uverbs_alloc_event_file(file, 0);
743 put_unused_fd(resp.fd);
744 return PTR_ERR(filp);
747 if (copy_to_user((void __user *) (unsigned long) cmd.response,
748 &resp, sizeof resp)) {
749 put_unused_fd(resp.fd);
754 fd_install(resp.fd, filp);
758 ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
759 const char __user *buf, int in_len,
762 struct ib_uverbs_create_cq cmd;
763 struct ib_uverbs_create_cq_resp resp;
764 struct ib_udata udata;
765 struct ib_ucq_object *obj;
766 struct ib_uverbs_event_file *ev_file = NULL;
770 if (out_len < sizeof resp)
773 if (copy_from_user(&cmd, buf, sizeof cmd))
776 INIT_UDATA(&udata, buf + sizeof cmd,
777 (unsigned long) cmd.response + sizeof resp,
778 in_len - sizeof cmd, out_len - sizeof resp);
780 if (cmd.comp_vector >= file->device->num_comp_vectors)
783 obj = kmalloc(sizeof *obj, GFP_KERNEL);
787 init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &cq_lock_key);
788 down_write(&obj->uobject.mutex);
790 if (cmd.comp_channel >= 0) {
791 ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel);
798 obj->uverbs_file = file;
799 obj->comp_events_reported = 0;
800 obj->async_events_reported = 0;
801 INIT_LIST_HEAD(&obj->comp_list);
802 INIT_LIST_HEAD(&obj->async_list);
804 cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe,
806 file->ucontext, &udata);
812 cq->device = file->device->ib_dev;
813 cq->uobject = &obj->uobject;
814 cq->comp_handler = ib_uverbs_comp_handler;
815 cq->event_handler = ib_uverbs_cq_event_handler;
816 cq->cq_context = ev_file;
817 atomic_set(&cq->usecnt, 0);
819 obj->uobject.object = cq;
820 ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject);
824 memset(&resp, 0, sizeof resp);
825 resp.cq_handle = obj->uobject.id;
828 if (copy_to_user((void __user *) (unsigned long) cmd.response,
829 &resp, sizeof resp)) {
834 mutex_lock(&file->mutex);
835 list_add_tail(&obj->uobject.list, &file->ucontext->cq_list);
836 mutex_unlock(&file->mutex);
838 obj->uobject.live = 1;
840 up_write(&obj->uobject.mutex);
845 idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject);
852 ib_uverbs_release_ucq(file, ev_file, obj);
855 put_uobj_write(&obj->uobject);
859 ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file,
860 const char __user *buf, int in_len,
863 struct ib_uverbs_resize_cq cmd;
864 struct ib_uverbs_resize_cq_resp resp;
865 struct ib_udata udata;
869 if (copy_from_user(&cmd, buf, sizeof cmd))
872 INIT_UDATA(&udata, buf + sizeof cmd,
873 (unsigned long) cmd.response + sizeof resp,
874 in_len - sizeof cmd, out_len - sizeof resp);
876 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
880 ret = cq->device->resize_cq(cq, cmd.cqe, &udata);
886 if (copy_to_user((void __user *) (unsigned long) cmd.response,
887 &resp, sizeof resp.cqe))
893 return ret ? ret : in_len;
896 ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
897 const char __user *buf, int in_len,
900 struct ib_uverbs_poll_cq cmd;
901 struct ib_uverbs_poll_cq_resp *resp;
908 if (copy_from_user(&cmd, buf, sizeof cmd))
911 wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL);
915 rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc);
916 resp = kmalloc(rsize, GFP_KERNEL);
922 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
928 resp->count = ib_poll_cq(cq, cmd.ne, wc);
932 for (i = 0; i < resp->count; i++) {
933 resp->wc[i].wr_id = wc[i].wr_id;
934 resp->wc[i].status = wc[i].status;
935 resp->wc[i].opcode = wc[i].opcode;
936 resp->wc[i].vendor_err = wc[i].vendor_err;
937 resp->wc[i].byte_len = wc[i].byte_len;
938 resp->wc[i].ex.imm_data = (__u32 __force) wc[i].ex.imm_data;
939 resp->wc[i].qp_num = wc[i].qp->qp_num;
940 resp->wc[i].src_qp = wc[i].src_qp;
941 resp->wc[i].wc_flags = wc[i].wc_flags;
942 resp->wc[i].pkey_index = wc[i].pkey_index;
943 resp->wc[i].slid = wc[i].slid;
944 resp->wc[i].sl = wc[i].sl;
945 resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits;
946 resp->wc[i].port_num = wc[i].port_num;
949 if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize))
957 return ret ? ret : in_len;
960 ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
961 const char __user *buf, int in_len,
964 struct ib_uverbs_req_notify_cq cmd;
967 if (copy_from_user(&cmd, buf, sizeof cmd))
970 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
974 ib_req_notify_cq(cq, cmd.solicited_only ?
975 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
982 ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
983 const char __user *buf, int in_len,
986 struct ib_uverbs_destroy_cq cmd;
987 struct ib_uverbs_destroy_cq_resp resp;
988 struct ib_uobject *uobj;
990 struct ib_ucq_object *obj;
991 struct ib_uverbs_event_file *ev_file;
994 if (copy_from_user(&cmd, buf, sizeof cmd))
997 uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext);
1001 ev_file = cq->cq_context;
1002 obj = container_of(cq->uobject, struct ib_ucq_object, uobject);
1004 ret = ib_destroy_cq(cq);
1008 put_uobj_write(uobj);
1013 idr_remove_uobj(&ib_uverbs_cq_idr, uobj);
1015 mutex_lock(&file->mutex);
1016 list_del(&uobj->list);
1017 mutex_unlock(&file->mutex);
1019 ib_uverbs_release_ucq(file, ev_file, obj);
1021 memset(&resp, 0, sizeof resp);
1022 resp.comp_events_reported = obj->comp_events_reported;
1023 resp.async_events_reported = obj->async_events_reported;
1027 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1028 &resp, sizeof resp))
1034 ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
1035 const char __user *buf, int in_len,
1038 struct ib_uverbs_create_qp cmd;
1039 struct ib_uverbs_create_qp_resp resp;
1040 struct ib_udata udata;
1041 struct ib_uqp_object *obj;
1043 struct ib_cq *scq, *rcq;
1046 struct ib_qp_init_attr attr;
1049 if (out_len < sizeof resp)
1052 if (copy_from_user(&cmd, buf, sizeof cmd))
1055 INIT_UDATA(&udata, buf + sizeof cmd,
1056 (unsigned long) cmd.response + sizeof resp,
1057 in_len - sizeof cmd, out_len - sizeof resp);
1059 obj = kmalloc(sizeof *obj, GFP_KERNEL);
1063 init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_key);
1064 down_write(&obj->uevent.uobject.mutex);
1066 srq = cmd.is_srq ? idr_read_srq(cmd.srq_handle, file->ucontext) : NULL;
1067 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
1068 scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, 0);
1069 rcq = cmd.recv_cq_handle == cmd.send_cq_handle ?
1070 scq : idr_read_cq(cmd.recv_cq_handle, file->ucontext, 1);
1072 if (!pd || !scq || !rcq || (cmd.is_srq && !srq)) {
1077 attr.event_handler = ib_uverbs_qp_event_handler;
1078 attr.qp_context = file;
1082 attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
1083 attr.qp_type = cmd.qp_type;
1084 attr.create_flags = 0;
1086 attr.cap.max_send_wr = cmd.max_send_wr;
1087 attr.cap.max_recv_wr = cmd.max_recv_wr;
1088 attr.cap.max_send_sge = cmd.max_send_sge;
1089 attr.cap.max_recv_sge = cmd.max_recv_sge;
1090 attr.cap.max_inline_data = cmd.max_inline_data;
1092 obj->uevent.events_reported = 0;
1093 INIT_LIST_HEAD(&obj->uevent.event_list);
1094 INIT_LIST_HEAD(&obj->mcast_list);
1096 qp = pd->device->create_qp(pd, &attr, &udata);
1102 qp->device = pd->device;
1104 qp->send_cq = attr.send_cq;
1105 qp->recv_cq = attr.recv_cq;
1107 qp->uobject = &obj->uevent.uobject;
1108 qp->event_handler = attr.event_handler;
1109 qp->qp_context = attr.qp_context;
1110 qp->qp_type = attr.qp_type;
1111 atomic_inc(&pd->usecnt);
1112 atomic_inc(&attr.send_cq->usecnt);
1113 atomic_inc(&attr.recv_cq->usecnt);
1115 atomic_inc(&attr.srq->usecnt);
1117 obj->uevent.uobject.object = qp;
1118 ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
1122 memset(&resp, 0, sizeof resp);
1123 resp.qpn = qp->qp_num;
1124 resp.qp_handle = obj->uevent.uobject.id;
1125 resp.max_recv_sge = attr.cap.max_recv_sge;
1126 resp.max_send_sge = attr.cap.max_send_sge;
1127 resp.max_recv_wr = attr.cap.max_recv_wr;
1128 resp.max_send_wr = attr.cap.max_send_wr;
1129 resp.max_inline_data = attr.cap.max_inline_data;
1131 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1132 &resp, sizeof resp)) {
1144 mutex_lock(&file->mutex);
1145 list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list);
1146 mutex_unlock(&file->mutex);
1148 obj->uevent.uobject.live = 1;
1150 up_write(&obj->uevent.uobject.mutex);
1155 idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
1165 if (rcq && rcq != scq)
1170 put_uobj_write(&obj->uevent.uobject);
1174 ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
1175 const char __user *buf, int in_len,
1178 struct ib_uverbs_query_qp cmd;
1179 struct ib_uverbs_query_qp_resp resp;
1181 struct ib_qp_attr *attr;
1182 struct ib_qp_init_attr *init_attr;
1185 if (copy_from_user(&cmd, buf, sizeof cmd))
1188 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1189 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1190 if (!attr || !init_attr) {
1195 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1201 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1208 memset(&resp, 0, sizeof resp);
1210 resp.qp_state = attr->qp_state;
1211 resp.cur_qp_state = attr->cur_qp_state;
1212 resp.path_mtu = attr->path_mtu;
1213 resp.path_mig_state = attr->path_mig_state;
1214 resp.qkey = attr->qkey;
1215 resp.rq_psn = attr->rq_psn;
1216 resp.sq_psn = attr->sq_psn;
1217 resp.dest_qp_num = attr->dest_qp_num;
1218 resp.qp_access_flags = attr->qp_access_flags;
1219 resp.pkey_index = attr->pkey_index;
1220 resp.alt_pkey_index = attr->alt_pkey_index;
1221 resp.sq_draining = attr->sq_draining;
1222 resp.max_rd_atomic = attr->max_rd_atomic;
1223 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1224 resp.min_rnr_timer = attr->min_rnr_timer;
1225 resp.port_num = attr->port_num;
1226 resp.timeout = attr->timeout;
1227 resp.retry_cnt = attr->retry_cnt;
1228 resp.rnr_retry = attr->rnr_retry;
1229 resp.alt_port_num = attr->alt_port_num;
1230 resp.alt_timeout = attr->alt_timeout;
1232 memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16);
1233 resp.dest.flow_label = attr->ah_attr.grh.flow_label;
1234 resp.dest.sgid_index = attr->ah_attr.grh.sgid_index;
1235 resp.dest.hop_limit = attr->ah_attr.grh.hop_limit;
1236 resp.dest.traffic_class = attr->ah_attr.grh.traffic_class;
1237 resp.dest.dlid = attr->ah_attr.dlid;
1238 resp.dest.sl = attr->ah_attr.sl;
1239 resp.dest.src_path_bits = attr->ah_attr.src_path_bits;
1240 resp.dest.static_rate = attr->ah_attr.static_rate;
1241 resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH);
1242 resp.dest.port_num = attr->ah_attr.port_num;
1244 memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16);
1245 resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label;
1246 resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index;
1247 resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit;
1248 resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class;
1249 resp.alt_dest.dlid = attr->alt_ah_attr.dlid;
1250 resp.alt_dest.sl = attr->alt_ah_attr.sl;
1251 resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits;
1252 resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate;
1253 resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH);
1254 resp.alt_dest.port_num = attr->alt_ah_attr.port_num;
1256 resp.max_send_wr = init_attr->cap.max_send_wr;
1257 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1258 resp.max_send_sge = init_attr->cap.max_send_sge;
1259 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1260 resp.max_inline_data = init_attr->cap.max_inline_data;
1261 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1263 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1264 &resp, sizeof resp))
1271 return ret ? ret : in_len;
1274 ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
1275 const char __user *buf, int in_len,
1278 struct ib_uverbs_modify_qp cmd;
1279 struct ib_udata udata;
1281 struct ib_qp_attr *attr;
1284 if (copy_from_user(&cmd, buf, sizeof cmd))
1287 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
1290 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1294 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1300 attr->qp_state = cmd.qp_state;
1301 attr->cur_qp_state = cmd.cur_qp_state;
1302 attr->path_mtu = cmd.path_mtu;
1303 attr->path_mig_state = cmd.path_mig_state;
1304 attr->qkey = cmd.qkey;
1305 attr->rq_psn = cmd.rq_psn;
1306 attr->sq_psn = cmd.sq_psn;
1307 attr->dest_qp_num = cmd.dest_qp_num;
1308 attr->qp_access_flags = cmd.qp_access_flags;
1309 attr->pkey_index = cmd.pkey_index;
1310 attr->alt_pkey_index = cmd.alt_pkey_index;
1311 attr->en_sqd_async_notify = cmd.en_sqd_async_notify;
1312 attr->max_rd_atomic = cmd.max_rd_atomic;
1313 attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic;
1314 attr->min_rnr_timer = cmd.min_rnr_timer;
1315 attr->port_num = cmd.port_num;
1316 attr->timeout = cmd.timeout;
1317 attr->retry_cnt = cmd.retry_cnt;
1318 attr->rnr_retry = cmd.rnr_retry;
1319 attr->alt_port_num = cmd.alt_port_num;
1320 attr->alt_timeout = cmd.alt_timeout;
1322 memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16);
1323 attr->ah_attr.grh.flow_label = cmd.dest.flow_label;
1324 attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index;
1325 attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit;
1326 attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class;
1327 attr->ah_attr.dlid = cmd.dest.dlid;
1328 attr->ah_attr.sl = cmd.dest.sl;
1329 attr->ah_attr.src_path_bits = cmd.dest.src_path_bits;
1330 attr->ah_attr.static_rate = cmd.dest.static_rate;
1331 attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0;
1332 attr->ah_attr.port_num = cmd.dest.port_num;
1334 memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16);
1335 attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label;
1336 attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index;
1337 attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit;
1338 attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class;
1339 attr->alt_ah_attr.dlid = cmd.alt_dest.dlid;
1340 attr->alt_ah_attr.sl = cmd.alt_dest.sl;
1341 attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits;
1342 attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate;
1343 attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0;
1344 attr->alt_ah_attr.port_num = cmd.alt_dest.port_num;
1346 ret = qp->device->modify_qp(qp, attr, cmd.attr_mask, &udata);
1361 ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
1362 const char __user *buf, int in_len,
1365 struct ib_uverbs_destroy_qp cmd;
1366 struct ib_uverbs_destroy_qp_resp resp;
1367 struct ib_uobject *uobj;
1369 struct ib_uqp_object *obj;
1372 if (copy_from_user(&cmd, buf, sizeof cmd))
1375 memset(&resp, 0, sizeof resp);
1377 uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext);
1381 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
1383 if (!list_empty(&obj->mcast_list)) {
1384 put_uobj_write(uobj);
1388 ret = ib_destroy_qp(qp);
1392 put_uobj_write(uobj);
1397 idr_remove_uobj(&ib_uverbs_qp_idr, uobj);
1399 mutex_lock(&file->mutex);
1400 list_del(&uobj->list);
1401 mutex_unlock(&file->mutex);
1403 ib_uverbs_release_uevent(file, &obj->uevent);
1405 resp.events_reported = obj->uevent.events_reported;
1409 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1410 &resp, sizeof resp))
1416 ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
1417 const char __user *buf, int in_len,
1420 struct ib_uverbs_post_send cmd;
1421 struct ib_uverbs_post_send_resp resp;
1422 struct ib_uverbs_send_wr *user_wr;
1423 struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
1427 ssize_t ret = -EINVAL;
1429 if (copy_from_user(&cmd, buf, sizeof cmd))
1432 if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
1433 cmd.sge_count * sizeof (struct ib_uverbs_sge))
1436 if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
1439 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
1443 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1447 is_ud = qp->qp_type == IB_QPT_UD;
1450 for (i = 0; i < cmd.wr_count; ++i) {
1451 if (copy_from_user(user_wr,
1452 buf + sizeof cmd + i * cmd.wqe_size,
1458 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
1463 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
1464 user_wr->num_sge * sizeof (struct ib_sge),
1478 next->wr_id = user_wr->wr_id;
1479 next->num_sge = user_wr->num_sge;
1480 next->opcode = user_wr->opcode;
1481 next->send_flags = user_wr->send_flags;
1484 next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah,
1486 if (!next->wr.ud.ah) {
1490 next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn;
1491 next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey;
1493 switch (next->opcode) {
1494 case IB_WR_RDMA_WRITE_WITH_IMM:
1496 (__be32 __force) user_wr->ex.imm_data;
1497 case IB_WR_RDMA_WRITE:
1498 case IB_WR_RDMA_READ:
1499 next->wr.rdma.remote_addr =
1500 user_wr->wr.rdma.remote_addr;
1501 next->wr.rdma.rkey =
1502 user_wr->wr.rdma.rkey;
1504 case IB_WR_SEND_WITH_IMM:
1506 (__be32 __force) user_wr->ex.imm_data;
1508 case IB_WR_SEND_WITH_INV:
1509 next->ex.invalidate_rkey =
1510 user_wr->ex.invalidate_rkey;
1512 case IB_WR_ATOMIC_CMP_AND_SWP:
1513 case IB_WR_ATOMIC_FETCH_AND_ADD:
1514 next->wr.atomic.remote_addr =
1515 user_wr->wr.atomic.remote_addr;
1516 next->wr.atomic.compare_add =
1517 user_wr->wr.atomic.compare_add;
1518 next->wr.atomic.swap = user_wr->wr.atomic.swap;
1519 next->wr.atomic.rkey = user_wr->wr.atomic.rkey;
1526 if (next->num_sge) {
1527 next->sg_list = (void *) next +
1528 ALIGN(sizeof *next, sizeof (struct ib_sge));
1529 if (copy_from_user(next->sg_list,
1531 cmd.wr_count * cmd.wqe_size +
1532 sg_ind * sizeof (struct ib_sge),
1533 next->num_sge * sizeof (struct ib_sge))) {
1537 sg_ind += next->num_sge;
1539 next->sg_list = NULL;
1543 ret = qp->device->post_send(qp, wr, &bad_wr);
1545 for (next = wr; next; next = next->next) {
1551 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1552 &resp, sizeof resp))
1559 if (is_ud && wr->wr.ud.ah)
1560 put_ah_read(wr->wr.ud.ah);
1569 return ret ? ret : in_len;
1572 static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
1578 struct ib_uverbs_recv_wr *user_wr;
1579 struct ib_recv_wr *wr = NULL, *last, *next;
1584 if (in_len < wqe_size * wr_count +
1585 sge_count * sizeof (struct ib_uverbs_sge))
1586 return ERR_PTR(-EINVAL);
1588 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
1589 return ERR_PTR(-EINVAL);
1591 user_wr = kmalloc(wqe_size, GFP_KERNEL);
1593 return ERR_PTR(-ENOMEM);
1597 for (i = 0; i < wr_count; ++i) {
1598 if (copy_from_user(user_wr, buf + i * wqe_size,
1604 if (user_wr->num_sge + sg_ind > sge_count) {
1609 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
1610 user_wr->num_sge * sizeof (struct ib_sge),
1624 next->wr_id = user_wr->wr_id;
1625 next->num_sge = user_wr->num_sge;
1627 if (next->num_sge) {
1628 next->sg_list = (void *) next +
1629 ALIGN(sizeof *next, sizeof (struct ib_sge));
1630 if (copy_from_user(next->sg_list,
1631 buf + wr_count * wqe_size +
1632 sg_ind * sizeof (struct ib_sge),
1633 next->num_sge * sizeof (struct ib_sge))) {
1637 sg_ind += next->num_sge;
1639 next->sg_list = NULL;
1654 return ERR_PTR(ret);
1657 ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
1658 const char __user *buf, int in_len,
1661 struct ib_uverbs_post_recv cmd;
1662 struct ib_uverbs_post_recv_resp resp;
1663 struct ib_recv_wr *wr, *next, *bad_wr;
1665 ssize_t ret = -EINVAL;
1667 if (copy_from_user(&cmd, buf, sizeof cmd))
1670 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
1671 in_len - sizeof cmd, cmd.wr_count,
1672 cmd.sge_count, cmd.wqe_size);
1676 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1681 ret = qp->device->post_recv(qp, wr, &bad_wr);
1686 for (next = wr; next; next = next->next) {
1692 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1693 &resp, sizeof resp))
1703 return ret ? ret : in_len;
1706 ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
1707 const char __user *buf, int in_len,
1710 struct ib_uverbs_post_srq_recv cmd;
1711 struct ib_uverbs_post_srq_recv_resp resp;
1712 struct ib_recv_wr *wr, *next, *bad_wr;
1714 ssize_t ret = -EINVAL;
1716 if (copy_from_user(&cmd, buf, sizeof cmd))
1719 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
1720 in_len - sizeof cmd, cmd.wr_count,
1721 cmd.sge_count, cmd.wqe_size);
1725 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
1730 ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
1735 for (next = wr; next; next = next->next) {
1741 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1742 &resp, sizeof resp))
1752 return ret ? ret : in_len;
1755 ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
1756 const char __user *buf, int in_len,
1759 struct ib_uverbs_create_ah cmd;
1760 struct ib_uverbs_create_ah_resp resp;
1761 struct ib_uobject *uobj;
1764 struct ib_ah_attr attr;
1767 if (out_len < sizeof resp)
1770 if (copy_from_user(&cmd, buf, sizeof cmd))
1773 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
1777 init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_key);
1778 down_write(&uobj->mutex);
1780 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
1786 attr.dlid = cmd.attr.dlid;
1787 attr.sl = cmd.attr.sl;
1788 attr.src_path_bits = cmd.attr.src_path_bits;
1789 attr.static_rate = cmd.attr.static_rate;
1790 attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0;
1791 attr.port_num = cmd.attr.port_num;
1792 attr.grh.flow_label = cmd.attr.grh.flow_label;
1793 attr.grh.sgid_index = cmd.attr.grh.sgid_index;
1794 attr.grh.hop_limit = cmd.attr.grh.hop_limit;
1795 attr.grh.traffic_class = cmd.attr.grh.traffic_class;
1796 memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
1798 ah = ib_create_ah(pd, &attr);
1807 ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj);
1811 resp.ah_handle = uobj->id;
1813 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1814 &resp, sizeof resp)) {
1821 mutex_lock(&file->mutex);
1822 list_add_tail(&uobj->list, &file->ucontext->ah_list);
1823 mutex_unlock(&file->mutex);
1827 up_write(&uobj->mutex);
1832 idr_remove_uobj(&ib_uverbs_ah_idr, uobj);
1841 put_uobj_write(uobj);
1845 ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
1846 const char __user *buf, int in_len, int out_len)
1848 struct ib_uverbs_destroy_ah cmd;
1850 struct ib_uobject *uobj;
1853 if (copy_from_user(&cmd, buf, sizeof cmd))
1856 uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext);
1861 ret = ib_destroy_ah(ah);
1865 put_uobj_write(uobj);
1870 idr_remove_uobj(&ib_uverbs_ah_idr, uobj);
1872 mutex_lock(&file->mutex);
1873 list_del(&uobj->list);
1874 mutex_unlock(&file->mutex);
1881 ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
1882 const char __user *buf, int in_len,
1885 struct ib_uverbs_attach_mcast cmd;
1887 struct ib_uqp_object *obj;
1888 struct ib_uverbs_mcast_entry *mcast;
1891 if (copy_from_user(&cmd, buf, sizeof cmd))
1894 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1898 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
1900 list_for_each_entry(mcast, &obj->mcast_list, list)
1901 if (cmd.mlid == mcast->lid &&
1902 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
1907 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
1913 mcast->lid = cmd.mlid;
1914 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
1916 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
1918 list_add_tail(&mcast->list, &obj->mcast_list);
1925 return ret ? ret : in_len;
1928 ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
1929 const char __user *buf, int in_len,
1932 struct ib_uverbs_detach_mcast cmd;
1933 struct ib_uqp_object *obj;
1935 struct ib_uverbs_mcast_entry *mcast;
1938 if (copy_from_user(&cmd, buf, sizeof cmd))
1941 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1945 ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid);
1949 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
1951 list_for_each_entry(mcast, &obj->mcast_list, list)
1952 if (cmd.mlid == mcast->lid &&
1953 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
1954 list_del(&mcast->list);
1962 return ret ? ret : in_len;
1965 ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
1966 const char __user *buf, int in_len,
1969 struct ib_uverbs_create_srq cmd;
1970 struct ib_uverbs_create_srq_resp resp;
1971 struct ib_udata udata;
1972 struct ib_uevent_object *obj;
1975 struct ib_srq_init_attr attr;
1978 if (out_len < sizeof resp)
1981 if (copy_from_user(&cmd, buf, sizeof cmd))
1984 INIT_UDATA(&udata, buf + sizeof cmd,
1985 (unsigned long) cmd.response + sizeof resp,
1986 in_len - sizeof cmd, out_len - sizeof resp);
1988 obj = kmalloc(sizeof *obj, GFP_KERNEL);
1992 init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &srq_lock_key);
1993 down_write(&obj->uobject.mutex);
1995 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
2001 attr.event_handler = ib_uverbs_srq_event_handler;
2002 attr.srq_context = file;
2003 attr.attr.max_wr = cmd.max_wr;
2004 attr.attr.max_sge = cmd.max_sge;
2005 attr.attr.srq_limit = cmd.srq_limit;
2007 obj->events_reported = 0;
2008 INIT_LIST_HEAD(&obj->event_list);
2010 srq = pd->device->create_srq(pd, &attr, &udata);
2016 srq->device = pd->device;
2018 srq->uobject = &obj->uobject;
2019 srq->event_handler = attr.event_handler;
2020 srq->srq_context = attr.srq_context;
2021 atomic_inc(&pd->usecnt);
2022 atomic_set(&srq->usecnt, 0);
2024 obj->uobject.object = srq;
2025 ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uobject);
2029 memset(&resp, 0, sizeof resp);
2030 resp.srq_handle = obj->uobject.id;
2031 resp.max_wr = attr.attr.max_wr;
2032 resp.max_sge = attr.attr.max_sge;
2034 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2035 &resp, sizeof resp)) {
2042 mutex_lock(&file->mutex);
2043 list_add_tail(&obj->uobject.list, &file->ucontext->srq_list);
2044 mutex_unlock(&file->mutex);
2046 obj->uobject.live = 1;
2048 up_write(&obj->uobject.mutex);
2053 idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uobject);
2056 ib_destroy_srq(srq);
2062 put_uobj_write(&obj->uobject);
2066 ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
2067 const char __user *buf, int in_len,
2070 struct ib_uverbs_modify_srq cmd;
2071 struct ib_udata udata;
2073 struct ib_srq_attr attr;
2076 if (copy_from_user(&cmd, buf, sizeof cmd))
2079 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
2082 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
2086 attr.max_wr = cmd.max_wr;
2087 attr.srq_limit = cmd.srq_limit;
2089 ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata);
2093 return ret ? ret : in_len;
2096 ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file,
2097 const char __user *buf,
2098 int in_len, int out_len)
2100 struct ib_uverbs_query_srq cmd;
2101 struct ib_uverbs_query_srq_resp resp;
2102 struct ib_srq_attr attr;
2106 if (out_len < sizeof resp)
2109 if (copy_from_user(&cmd, buf, sizeof cmd))
2112 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
2116 ret = ib_query_srq(srq, &attr);
2123 memset(&resp, 0, sizeof resp);
2125 resp.max_wr = attr.max_wr;
2126 resp.max_sge = attr.max_sge;
2127 resp.srq_limit = attr.srq_limit;
2129 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2130 &resp, sizeof resp))
2136 ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
2137 const char __user *buf, int in_len,
2140 struct ib_uverbs_destroy_srq cmd;
2141 struct ib_uverbs_destroy_srq_resp resp;
2142 struct ib_uobject *uobj;
2144 struct ib_uevent_object *obj;
2147 if (copy_from_user(&cmd, buf, sizeof cmd))
2150 uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext);
2154 obj = container_of(uobj, struct ib_uevent_object, uobject);
2156 ret = ib_destroy_srq(srq);
2160 put_uobj_write(uobj);
2165 idr_remove_uobj(&ib_uverbs_srq_idr, uobj);
2167 mutex_lock(&file->mutex);
2168 list_del(&uobj->list);
2169 mutex_unlock(&file->mutex);
2171 ib_uverbs_release_uevent(file, obj);
2173 memset(&resp, 0, sizeof resp);
2174 resp.events_reported = obj->events_reported;
2178 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2179 &resp, sizeof resp))
2182 return ret ? ret : in_len;