2 * Copyright (c) 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Cisco Systems. All rights reserved.
4 * Copyright (c) 2005 PathScale, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 * $Id: uverbs_cmd.c 2708 2005-06-24 17:27:21Z roland $
37 #include <linux/file.h>
40 #include <asm/uaccess.h>
44 #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \
46 (udata)->inbuf = (void __user *) (ibuf); \
47 (udata)->outbuf = (void __user *) (obuf); \
48 (udata)->inlen = (ilen); \
49 (udata)->outlen = (olen); \
52 ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
53 const char __user *buf,
54 int in_len, int out_len)
56 struct ib_uverbs_get_context cmd;
57 struct ib_uverbs_get_context_resp resp;
58 struct ib_udata udata;
59 struct ib_device *ibdev = file->device->ib_dev;
60 struct ib_ucontext *ucontext;
64 if (out_len < sizeof resp)
67 if (copy_from_user(&cmd, buf, sizeof cmd))
77 INIT_UDATA(&udata, buf + sizeof cmd,
78 (unsigned long) cmd.response + sizeof resp,
79 in_len - sizeof cmd, out_len - sizeof resp);
81 ucontext = ibdev->alloc_ucontext(ibdev, &udata);
83 return PTR_ERR(file->ucontext);
85 ucontext->device = ibdev;
86 INIT_LIST_HEAD(&ucontext->pd_list);
87 INIT_LIST_HEAD(&ucontext->mr_list);
88 INIT_LIST_HEAD(&ucontext->mw_list);
89 INIT_LIST_HEAD(&ucontext->cq_list);
90 INIT_LIST_HEAD(&ucontext->qp_list);
91 INIT_LIST_HEAD(&ucontext->srq_list);
92 INIT_LIST_HEAD(&ucontext->ah_list);
94 resp.num_comp_vectors = file->device->num_comp_vectors;
96 filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd);
102 if (copy_to_user((void __user *) (unsigned long) cmd.response,
103 &resp, sizeof resp)) {
108 file->async_file = filp->private_data;
110 INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev,
111 ib_uverbs_event_handler);
112 ret = ib_register_event_handler(&file->event_handler);
116 kref_get(&file->async_file->ref);
117 kref_get(&file->ref);
118 file->ucontext = ucontext;
120 fd_install(resp.async_fd, filp);
127 put_unused_fd(resp.async_fd);
131 ibdev->dealloc_ucontext(ucontext);
138 ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file,
139 const char __user *buf,
140 int in_len, int out_len)
142 struct ib_uverbs_query_device cmd;
143 struct ib_uverbs_query_device_resp resp;
144 struct ib_device_attr attr;
147 if (out_len < sizeof resp)
150 if (copy_from_user(&cmd, buf, sizeof cmd))
153 ret = ib_query_device(file->device->ib_dev, &attr);
157 memset(&resp, 0, sizeof resp);
159 resp.fw_ver = attr.fw_ver;
160 resp.node_guid = attr.node_guid;
161 resp.sys_image_guid = attr.sys_image_guid;
162 resp.max_mr_size = attr.max_mr_size;
163 resp.page_size_cap = attr.page_size_cap;
164 resp.vendor_id = attr.vendor_id;
165 resp.vendor_part_id = attr.vendor_part_id;
166 resp.hw_ver = attr.hw_ver;
167 resp.max_qp = attr.max_qp;
168 resp.max_qp_wr = attr.max_qp_wr;
169 resp.device_cap_flags = attr.device_cap_flags;
170 resp.max_sge = attr.max_sge;
171 resp.max_sge_rd = attr.max_sge_rd;
172 resp.max_cq = attr.max_cq;
173 resp.max_cqe = attr.max_cqe;
174 resp.max_mr = attr.max_mr;
175 resp.max_pd = attr.max_pd;
176 resp.max_qp_rd_atom = attr.max_qp_rd_atom;
177 resp.max_ee_rd_atom = attr.max_ee_rd_atom;
178 resp.max_res_rd_atom = attr.max_res_rd_atom;
179 resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom;
180 resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom;
181 resp.atomic_cap = attr.atomic_cap;
182 resp.max_ee = attr.max_ee;
183 resp.max_rdd = attr.max_rdd;
184 resp.max_mw = attr.max_mw;
185 resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp;
186 resp.max_raw_ethy_qp = attr.max_raw_ethy_qp;
187 resp.max_mcast_grp = attr.max_mcast_grp;
188 resp.max_mcast_qp_attach = attr.max_mcast_qp_attach;
189 resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach;
190 resp.max_ah = attr.max_ah;
191 resp.max_fmr = attr.max_fmr;
192 resp.max_map_per_fmr = attr.max_map_per_fmr;
193 resp.max_srq = attr.max_srq;
194 resp.max_srq_wr = attr.max_srq_wr;
195 resp.max_srq_sge = attr.max_srq_sge;
196 resp.max_pkeys = attr.max_pkeys;
197 resp.local_ca_ack_delay = attr.local_ca_ack_delay;
198 resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt;
200 if (copy_to_user((void __user *) (unsigned long) cmd.response,
207 ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file,
208 const char __user *buf,
209 int in_len, int out_len)
211 struct ib_uverbs_query_port cmd;
212 struct ib_uverbs_query_port_resp resp;
213 struct ib_port_attr attr;
216 if (out_len < sizeof resp)
219 if (copy_from_user(&cmd, buf, sizeof cmd))
222 ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr);
226 memset(&resp, 0, sizeof resp);
228 resp.state = attr.state;
229 resp.max_mtu = attr.max_mtu;
230 resp.active_mtu = attr.active_mtu;
231 resp.gid_tbl_len = attr.gid_tbl_len;
232 resp.port_cap_flags = attr.port_cap_flags;
233 resp.max_msg_sz = attr.max_msg_sz;
234 resp.bad_pkey_cntr = attr.bad_pkey_cntr;
235 resp.qkey_viol_cntr = attr.qkey_viol_cntr;
236 resp.pkey_tbl_len = attr.pkey_tbl_len;
238 resp.sm_lid = attr.sm_lid;
240 resp.max_vl_num = attr.max_vl_num;
241 resp.sm_sl = attr.sm_sl;
242 resp.subnet_timeout = attr.subnet_timeout;
243 resp.init_type_reply = attr.init_type_reply;
244 resp.active_width = attr.active_width;
245 resp.active_speed = attr.active_speed;
246 resp.phys_state = attr.phys_state;
248 if (copy_to_user((void __user *) (unsigned long) cmd.response,
255 ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
256 const char __user *buf,
257 int in_len, int out_len)
259 struct ib_uverbs_alloc_pd cmd;
260 struct ib_uverbs_alloc_pd_resp resp;
261 struct ib_udata udata;
262 struct ib_uobject *uobj;
266 if (out_len < sizeof resp)
269 if (copy_from_user(&cmd, buf, sizeof cmd))
272 INIT_UDATA(&udata, buf + sizeof cmd,
273 (unsigned long) cmd.response + sizeof resp,
274 in_len - sizeof cmd, out_len - sizeof resp);
276 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
280 uobj->context = file->ucontext;
282 pd = file->device->ib_dev->alloc_pd(file->device->ib_dev,
283 file->ucontext, &udata);
289 pd->device = file->device->ib_dev;
291 atomic_set(&pd->usecnt, 0);
293 down(&ib_uverbs_idr_mutex);
296 if (!idr_pre_get(&ib_uverbs_pd_idr, GFP_KERNEL)) {
301 ret = idr_get_new(&ib_uverbs_pd_idr, pd, &uobj->id);
308 memset(&resp, 0, sizeof resp);
309 resp.pd_handle = uobj->id;
311 if (copy_to_user((void __user *) (unsigned long) cmd.response,
312 &resp, sizeof resp)) {
318 list_add_tail(&uobj->list, &file->ucontext->pd_list);
321 up(&ib_uverbs_idr_mutex);
326 idr_remove(&ib_uverbs_pd_idr, uobj->id);
329 up(&ib_uverbs_idr_mutex);
337 ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file,
338 const char __user *buf,
339 int in_len, int out_len)
341 struct ib_uverbs_dealloc_pd cmd;
343 struct ib_uobject *uobj;
346 if (copy_from_user(&cmd, buf, sizeof cmd))
349 down(&ib_uverbs_idr_mutex);
351 pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
352 if (!pd || pd->uobject->context != file->ucontext)
357 ret = ib_dealloc_pd(pd);
361 idr_remove(&ib_uverbs_pd_idr, cmd.pd_handle);
364 list_del(&uobj->list);
370 up(&ib_uverbs_idr_mutex);
372 return ret ? ret : in_len;
375 ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
376 const char __user *buf, int in_len,
379 struct ib_uverbs_reg_mr cmd;
380 struct ib_uverbs_reg_mr_resp resp;
381 struct ib_udata udata;
382 struct ib_umem_object *obj;
387 if (out_len < sizeof resp)
390 if (copy_from_user(&cmd, buf, sizeof cmd))
393 INIT_UDATA(&udata, buf + sizeof cmd,
394 (unsigned long) cmd.response + sizeof resp,
395 in_len - sizeof cmd, out_len - sizeof resp);
397 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
401 * Local write permission is required if remote write or
402 * remote atomic permission is also requested.
404 if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
405 !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE))
408 obj = kmalloc(sizeof *obj, GFP_KERNEL);
412 obj->uobject.context = file->ucontext;
415 * We ask for writable memory if any access flags other than
416 * "remote read" are set. "Local write" and "remote write"
417 * obviously require write access. "Remote atomic" can do
418 * things like fetch and add, which will modify memory, and
419 * "MW bind" can change permissions by binding a window.
421 ret = ib_umem_get(file->device->ib_dev, &obj->umem,
422 (void *) (unsigned long) cmd.start, cmd.length,
423 !!(cmd.access_flags & ~IB_ACCESS_REMOTE_READ));
427 obj->umem.virt_base = cmd.hca_va;
429 down(&ib_uverbs_idr_mutex);
431 pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
432 if (!pd || pd->uobject->context != file->ucontext) {
437 if (!pd->device->reg_user_mr) {
442 mr = pd->device->reg_user_mr(pd, &obj->umem, cmd.access_flags, &udata);
448 mr->device = pd->device;
450 mr->uobject = &obj->uobject;
451 atomic_inc(&pd->usecnt);
452 atomic_set(&mr->usecnt, 0);
454 memset(&resp, 0, sizeof resp);
455 resp.lkey = mr->lkey;
456 resp.rkey = mr->rkey;
459 if (!idr_pre_get(&ib_uverbs_mr_idr, GFP_KERNEL)) {
464 ret = idr_get_new(&ib_uverbs_mr_idr, mr, &obj->uobject.id);
471 resp.mr_handle = obj->uobject.id;
473 if (copy_to_user((void __user *) (unsigned long) cmd.response,
474 &resp, sizeof resp)) {
480 list_add_tail(&obj->uobject.list, &file->ucontext->mr_list);
483 up(&ib_uverbs_idr_mutex);
488 idr_remove(&ib_uverbs_mr_idr, obj->uobject.id);
494 up(&ib_uverbs_idr_mutex);
496 ib_umem_release(file->device->ib_dev, &obj->umem);
503 ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file,
504 const char __user *buf, int in_len,
507 struct ib_uverbs_dereg_mr cmd;
509 struct ib_umem_object *memobj;
512 if (copy_from_user(&cmd, buf, sizeof cmd))
515 down(&ib_uverbs_idr_mutex);
517 mr = idr_find(&ib_uverbs_mr_idr, cmd.mr_handle);
518 if (!mr || mr->uobject->context != file->ucontext)
521 memobj = container_of(mr->uobject, struct ib_umem_object, uobject);
523 ret = ib_dereg_mr(mr);
527 idr_remove(&ib_uverbs_mr_idr, cmd.mr_handle);
530 list_del(&memobj->uobject.list);
533 ib_umem_release(file->device->ib_dev, &memobj->umem);
537 up(&ib_uverbs_idr_mutex);
539 return ret ? ret : in_len;
542 ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
543 const char __user *buf, int in_len,
546 struct ib_uverbs_create_comp_channel cmd;
547 struct ib_uverbs_create_comp_channel_resp resp;
550 if (out_len < sizeof resp)
553 if (copy_from_user(&cmd, buf, sizeof cmd))
556 filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd);
558 return PTR_ERR(filp);
560 if (copy_to_user((void __user *) (unsigned long) cmd.response,
561 &resp, sizeof resp)) {
562 put_unused_fd(resp.fd);
567 fd_install(resp.fd, filp);
571 ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
572 const char __user *buf, int in_len,
575 struct ib_uverbs_create_cq cmd;
576 struct ib_uverbs_create_cq_resp resp;
577 struct ib_udata udata;
578 struct ib_ucq_object *uobj;
579 struct ib_uverbs_event_file *ev_file = NULL;
583 if (out_len < sizeof resp)
586 if (copy_from_user(&cmd, buf, sizeof cmd))
589 INIT_UDATA(&udata, buf + sizeof cmd,
590 (unsigned long) cmd.response + sizeof resp,
591 in_len - sizeof cmd, out_len - sizeof resp);
593 if (cmd.comp_vector >= file->device->num_comp_vectors)
596 if (cmd.comp_channel >= 0)
597 ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel);
599 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
603 uobj->uobject.user_handle = cmd.user_handle;
604 uobj->uobject.context = file->ucontext;
605 uobj->comp_events_reported = 0;
606 uobj->async_events_reported = 0;
607 INIT_LIST_HEAD(&uobj->comp_list);
608 INIT_LIST_HEAD(&uobj->async_list);
610 cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe,
611 file->ucontext, &udata);
617 cq->device = file->device->ib_dev;
618 cq->uobject = &uobj->uobject;
619 cq->comp_handler = ib_uverbs_comp_handler;
620 cq->event_handler = ib_uverbs_cq_event_handler;
621 cq->cq_context = ev_file;
622 atomic_set(&cq->usecnt, 0);
624 down(&ib_uverbs_idr_mutex);
627 if (!idr_pre_get(&ib_uverbs_cq_idr, GFP_KERNEL)) {
632 ret = idr_get_new(&ib_uverbs_cq_idr, cq, &uobj->uobject.id);
639 memset(&resp, 0, sizeof resp);
640 resp.cq_handle = uobj->uobject.id;
643 if (copy_to_user((void __user *) (unsigned long) cmd.response,
644 &resp, sizeof resp)) {
650 list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list);
653 up(&ib_uverbs_idr_mutex);
658 idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id);
661 up(&ib_uverbs_idr_mutex);
669 ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
670 const char __user *buf, int in_len,
673 struct ib_uverbs_poll_cq cmd;
674 struct ib_uverbs_poll_cq_resp *resp;
681 if (copy_from_user(&cmd, buf, sizeof cmd))
684 wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL);
688 rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc);
689 resp = kmalloc(rsize, GFP_KERNEL);
695 down(&ib_uverbs_idr_mutex);
696 cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle);
697 if (!cq || cq->uobject->context != file->ucontext) {
702 resp->count = ib_poll_cq(cq, cmd.ne, wc);
704 for (i = 0; i < resp->count; i++) {
705 resp->wc[i].wr_id = wc[i].wr_id;
706 resp->wc[i].status = wc[i].status;
707 resp->wc[i].opcode = wc[i].opcode;
708 resp->wc[i].vendor_err = wc[i].vendor_err;
709 resp->wc[i].byte_len = wc[i].byte_len;
710 resp->wc[i].imm_data = wc[i].imm_data;
711 resp->wc[i].qp_num = wc[i].qp_num;
712 resp->wc[i].src_qp = wc[i].src_qp;
713 resp->wc[i].wc_flags = wc[i].wc_flags;
714 resp->wc[i].pkey_index = wc[i].pkey_index;
715 resp->wc[i].slid = wc[i].slid;
716 resp->wc[i].sl = wc[i].sl;
717 resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits;
718 resp->wc[i].port_num = wc[i].port_num;
721 if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize))
725 up(&ib_uverbs_idr_mutex);
730 return ret ? ret : in_len;
733 ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
734 const char __user *buf, int in_len,
737 struct ib_uverbs_req_notify_cq cmd;
741 if (copy_from_user(&cmd, buf, sizeof cmd))
744 down(&ib_uverbs_idr_mutex);
745 cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle);
746 if (cq && cq->uobject->context == file->ucontext) {
747 ib_req_notify_cq(cq, cmd.solicited_only ?
748 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
751 up(&ib_uverbs_idr_mutex);
756 ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
757 const char __user *buf, int in_len,
760 struct ib_uverbs_destroy_cq cmd;
761 struct ib_uverbs_destroy_cq_resp resp;
763 struct ib_ucq_object *uobj;
764 struct ib_uverbs_event_file *ev_file;
768 if (copy_from_user(&cmd, buf, sizeof cmd))
771 memset(&resp, 0, sizeof resp);
773 down(&ib_uverbs_idr_mutex);
775 cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle);
776 if (!cq || cq->uobject->context != file->ucontext)
779 user_handle = cq->uobject->user_handle;
780 uobj = container_of(cq->uobject, struct ib_ucq_object, uobject);
781 ev_file = cq->cq_context;
783 ret = ib_destroy_cq(cq);
787 idr_remove(&ib_uverbs_cq_idr, cmd.cq_handle);
790 list_del(&uobj->uobject.list);
793 ib_uverbs_release_ucq(file, ev_file, uobj);
795 resp.comp_events_reported = uobj->comp_events_reported;
796 resp.async_events_reported = uobj->async_events_reported;
800 if (copy_to_user((void __user *) (unsigned long) cmd.response,
805 up(&ib_uverbs_idr_mutex);
807 return ret ? ret : in_len;
810 ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
811 const char __user *buf, int in_len,
814 struct ib_uverbs_create_qp cmd;
815 struct ib_uverbs_create_qp_resp resp;
816 struct ib_udata udata;
817 struct ib_uevent_object *uobj;
819 struct ib_cq *scq, *rcq;
822 struct ib_qp_init_attr attr;
825 if (out_len < sizeof resp)
828 if (copy_from_user(&cmd, buf, sizeof cmd))
831 INIT_UDATA(&udata, buf + sizeof cmd,
832 (unsigned long) cmd.response + sizeof resp,
833 in_len - sizeof cmd, out_len - sizeof resp);
835 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
839 down(&ib_uverbs_idr_mutex);
841 pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
842 scq = idr_find(&ib_uverbs_cq_idr, cmd.send_cq_handle);
843 rcq = idr_find(&ib_uverbs_cq_idr, cmd.recv_cq_handle);
844 srq = cmd.is_srq ? idr_find(&ib_uverbs_srq_idr, cmd.srq_handle) : NULL;
846 if (!pd || pd->uobject->context != file->ucontext ||
847 !scq || scq->uobject->context != file->ucontext ||
848 !rcq || rcq->uobject->context != file->ucontext ||
849 (cmd.is_srq && (!srq || srq->uobject->context != file->ucontext))) {
854 attr.event_handler = ib_uverbs_qp_event_handler;
855 attr.qp_context = file;
859 attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
860 attr.qp_type = cmd.qp_type;
862 attr.cap.max_send_wr = cmd.max_send_wr;
863 attr.cap.max_recv_wr = cmd.max_recv_wr;
864 attr.cap.max_send_sge = cmd.max_send_sge;
865 attr.cap.max_recv_sge = cmd.max_recv_sge;
866 attr.cap.max_inline_data = cmd.max_inline_data;
868 uobj->uobject.user_handle = cmd.user_handle;
869 uobj->uobject.context = file->ucontext;
870 uobj->events_reported = 0;
871 INIT_LIST_HEAD(&uobj->event_list);
873 qp = pd->device->create_qp(pd, &attr, &udata);
879 qp->device = pd->device;
881 qp->send_cq = attr.send_cq;
882 qp->recv_cq = attr.recv_cq;
884 qp->uobject = &uobj->uobject;
885 qp->event_handler = attr.event_handler;
886 qp->qp_context = attr.qp_context;
887 qp->qp_type = attr.qp_type;
888 atomic_inc(&pd->usecnt);
889 atomic_inc(&attr.send_cq->usecnt);
890 atomic_inc(&attr.recv_cq->usecnt);
892 atomic_inc(&attr.srq->usecnt);
894 memset(&resp, 0, sizeof resp);
895 resp.qpn = qp->qp_num;
898 if (!idr_pre_get(&ib_uverbs_qp_idr, GFP_KERNEL)) {
903 ret = idr_get_new(&ib_uverbs_qp_idr, qp, &uobj->uobject.id);
910 resp.qp_handle = uobj->uobject.id;
912 if (copy_to_user((void __user *) (unsigned long) cmd.response,
913 &resp, sizeof resp)) {
919 list_add_tail(&uobj->uobject.list, &file->ucontext->qp_list);
922 up(&ib_uverbs_idr_mutex);
927 idr_remove(&ib_uverbs_qp_idr, uobj->uobject.id);
933 up(&ib_uverbs_idr_mutex);
939 ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
940 const char __user *buf, int in_len,
943 struct ib_uverbs_modify_qp cmd;
945 struct ib_qp_attr *attr;
948 if (copy_from_user(&cmd, buf, sizeof cmd))
951 attr = kmalloc(sizeof *attr, GFP_KERNEL);
955 down(&ib_uverbs_idr_mutex);
957 qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
958 if (!qp || qp->uobject->context != file->ucontext) {
963 attr->qp_state = cmd.qp_state;
964 attr->cur_qp_state = cmd.cur_qp_state;
965 attr->path_mtu = cmd.path_mtu;
966 attr->path_mig_state = cmd.path_mig_state;
967 attr->qkey = cmd.qkey;
968 attr->rq_psn = cmd.rq_psn;
969 attr->sq_psn = cmd.sq_psn;
970 attr->dest_qp_num = cmd.dest_qp_num;
971 attr->qp_access_flags = cmd.qp_access_flags;
972 attr->pkey_index = cmd.pkey_index;
973 attr->alt_pkey_index = cmd.pkey_index;
974 attr->en_sqd_async_notify = cmd.en_sqd_async_notify;
975 attr->max_rd_atomic = cmd.max_rd_atomic;
976 attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic;
977 attr->min_rnr_timer = cmd.min_rnr_timer;
978 attr->port_num = cmd.port_num;
979 attr->timeout = cmd.timeout;
980 attr->retry_cnt = cmd.retry_cnt;
981 attr->rnr_retry = cmd.rnr_retry;
982 attr->alt_port_num = cmd.alt_port_num;
983 attr->alt_timeout = cmd.alt_timeout;
985 memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16);
986 attr->ah_attr.grh.flow_label = cmd.dest.flow_label;
987 attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index;
988 attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit;
989 attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class;
990 attr->ah_attr.dlid = cmd.dest.dlid;
991 attr->ah_attr.sl = cmd.dest.sl;
992 attr->ah_attr.src_path_bits = cmd.dest.src_path_bits;
993 attr->ah_attr.static_rate = cmd.dest.static_rate;
994 attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0;
995 attr->ah_attr.port_num = cmd.dest.port_num;
997 memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16);
998 attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label;
999 attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index;
1000 attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit;
1001 attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class;
1002 attr->alt_ah_attr.dlid = cmd.alt_dest.dlid;
1003 attr->alt_ah_attr.sl = cmd.alt_dest.sl;
1004 attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits;
1005 attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate;
1006 attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0;
1007 attr->alt_ah_attr.port_num = cmd.alt_dest.port_num;
1009 ret = ib_modify_qp(qp, attr, cmd.attr_mask);
1016 up(&ib_uverbs_idr_mutex);
1022 ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
1023 const char __user *buf, int in_len,
1026 struct ib_uverbs_destroy_qp cmd;
1027 struct ib_uverbs_destroy_qp_resp resp;
1029 struct ib_uevent_object *uobj;
1032 if (copy_from_user(&cmd, buf, sizeof cmd))
1035 memset(&resp, 0, sizeof resp);
1037 down(&ib_uverbs_idr_mutex);
1039 qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
1040 if (!qp || qp->uobject->context != file->ucontext)
1043 uobj = container_of(qp->uobject, struct ib_uevent_object, uobject);
1045 ret = ib_destroy_qp(qp);
1049 idr_remove(&ib_uverbs_qp_idr, cmd.qp_handle);
1052 list_del(&uobj->uobject.list);
1055 ib_uverbs_release_uevent(file, uobj);
1057 resp.events_reported = uobj->events_reported;
1061 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1062 &resp, sizeof resp))
1066 up(&ib_uverbs_idr_mutex);
1068 return ret ? ret : in_len;
1071 ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
1072 const char __user *buf, int in_len,
1075 struct ib_uverbs_post_send cmd;
1076 struct ib_uverbs_post_send_resp resp;
1077 struct ib_uverbs_send_wr *user_wr;
1078 struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
1081 ssize_t ret = -EINVAL;
1083 if (copy_from_user(&cmd, buf, sizeof cmd))
1086 if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
1087 cmd.sge_count * sizeof (struct ib_uverbs_sge))
1090 if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
1093 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
1097 down(&ib_uverbs_idr_mutex);
1099 qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
1100 if (!qp || qp->uobject->context != file->ucontext)
1105 for (i = 0; i < cmd.wr_count; ++i) {
1106 if (copy_from_user(user_wr,
1107 buf + sizeof cmd + i * cmd.wqe_size,
1113 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
1118 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
1119 user_wr->num_sge * sizeof (struct ib_sge),
1133 next->wr_id = user_wr->wr_id;
1134 next->num_sge = user_wr->num_sge;
1135 next->opcode = user_wr->opcode;
1136 next->send_flags = user_wr->send_flags;
1137 next->imm_data = user_wr->imm_data;
1139 if (qp->qp_type == IB_QPT_UD) {
1140 next->wr.ud.ah = idr_find(&ib_uverbs_ah_idr,
1142 if (!next->wr.ud.ah) {
1146 next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn;
1147 next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey;
1149 switch (next->opcode) {
1150 case IB_WR_RDMA_WRITE:
1151 case IB_WR_RDMA_WRITE_WITH_IMM:
1152 case IB_WR_RDMA_READ:
1153 next->wr.rdma.remote_addr =
1154 user_wr->wr.rdma.remote_addr;
1155 next->wr.rdma.rkey =
1156 user_wr->wr.rdma.rkey;
1158 case IB_WR_ATOMIC_CMP_AND_SWP:
1159 case IB_WR_ATOMIC_FETCH_AND_ADD:
1160 next->wr.atomic.remote_addr =
1161 user_wr->wr.atomic.remote_addr;
1162 next->wr.atomic.compare_add =
1163 user_wr->wr.atomic.compare_add;
1164 next->wr.atomic.swap = user_wr->wr.atomic.swap;
1165 next->wr.atomic.rkey = user_wr->wr.atomic.rkey;
1172 if (next->num_sge) {
1173 next->sg_list = (void *) next +
1174 ALIGN(sizeof *next, sizeof (struct ib_sge));
1175 if (copy_from_user(next->sg_list,
1177 cmd.wr_count * cmd.wqe_size +
1178 sg_ind * sizeof (struct ib_sge),
1179 next->num_sge * sizeof (struct ib_sge))) {
1183 sg_ind += next->num_sge;
1185 next->sg_list = NULL;
1189 ret = qp->device->post_send(qp, wr, &bad_wr);
1191 for (next = wr; next; next = next->next) {
1197 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1198 &resp, sizeof resp))
1202 up(&ib_uverbs_idr_mutex);
1212 return ret ? ret : in_len;
1215 static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
1221 struct ib_uverbs_recv_wr *user_wr;
1222 struct ib_recv_wr *wr = NULL, *last, *next;
1227 if (in_len < wqe_size * wr_count +
1228 sge_count * sizeof (struct ib_uverbs_sge))
1229 return ERR_PTR(-EINVAL);
1231 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
1232 return ERR_PTR(-EINVAL);
1234 user_wr = kmalloc(wqe_size, GFP_KERNEL);
1236 return ERR_PTR(-ENOMEM);
1240 for (i = 0; i < wr_count; ++i) {
1241 if (copy_from_user(user_wr, buf + i * wqe_size,
1247 if (user_wr->num_sge + sg_ind > sge_count) {
1252 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
1253 user_wr->num_sge * sizeof (struct ib_sge),
1267 next->wr_id = user_wr->wr_id;
1268 next->num_sge = user_wr->num_sge;
1270 if (next->num_sge) {
1271 next->sg_list = (void *) next +
1272 ALIGN(sizeof *next, sizeof (struct ib_sge));
1273 if (copy_from_user(next->sg_list,
1274 buf + wr_count * wqe_size +
1275 sg_ind * sizeof (struct ib_sge),
1276 next->num_sge * sizeof (struct ib_sge))) {
1280 sg_ind += next->num_sge;
1282 next->sg_list = NULL;
1297 return ERR_PTR(ret);
1300 ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
1301 const char __user *buf, int in_len,
1304 struct ib_uverbs_post_recv cmd;
1305 struct ib_uverbs_post_recv_resp resp;
1306 struct ib_recv_wr *wr, *next, *bad_wr;
1308 ssize_t ret = -EINVAL;
1310 if (copy_from_user(&cmd, buf, sizeof cmd))
1313 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
1314 in_len - sizeof cmd, cmd.wr_count,
1315 cmd.sge_count, cmd.wqe_size);
1319 down(&ib_uverbs_idr_mutex);
1321 qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
1322 if (!qp || qp->uobject->context != file->ucontext)
1326 ret = qp->device->post_recv(qp, wr, &bad_wr);
1328 for (next = wr; next; next = next->next) {
1335 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1336 &resp, sizeof resp))
1340 up(&ib_uverbs_idr_mutex);
1348 return ret ? ret : in_len;
1351 ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
1352 const char __user *buf, int in_len,
1355 struct ib_uverbs_post_srq_recv cmd;
1356 struct ib_uverbs_post_srq_recv_resp resp;
1357 struct ib_recv_wr *wr, *next, *bad_wr;
1359 ssize_t ret = -EINVAL;
1361 if (copy_from_user(&cmd, buf, sizeof cmd))
1364 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
1365 in_len - sizeof cmd, cmd.wr_count,
1366 cmd.sge_count, cmd.wqe_size);
1370 down(&ib_uverbs_idr_mutex);
1372 srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle);
1373 if (!srq || srq->uobject->context != file->ucontext)
1377 ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
1379 for (next = wr; next; next = next->next) {
1386 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1387 &resp, sizeof resp))
1391 up(&ib_uverbs_idr_mutex);
1399 return ret ? ret : in_len;
1402 ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
1403 const char __user *buf, int in_len,
1406 struct ib_uverbs_create_ah cmd;
1407 struct ib_uverbs_create_ah_resp resp;
1408 struct ib_uobject *uobj;
1411 struct ib_ah_attr attr;
1414 if (out_len < sizeof resp)
1417 if (copy_from_user(&cmd, buf, sizeof cmd))
1420 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
1424 down(&ib_uverbs_idr_mutex);
1426 pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
1427 if (!pd || pd->uobject->context != file->ucontext) {
1432 uobj->user_handle = cmd.user_handle;
1433 uobj->context = file->ucontext;
1435 attr.dlid = cmd.attr.dlid;
1436 attr.sl = cmd.attr.sl;
1437 attr.src_path_bits = cmd.attr.src_path_bits;
1438 attr.static_rate = cmd.attr.static_rate;
1439 attr.port_num = cmd.attr.port_num;
1440 attr.grh.flow_label = cmd.attr.grh.flow_label;
1441 attr.grh.sgid_index = cmd.attr.grh.sgid_index;
1442 attr.grh.hop_limit = cmd.attr.grh.hop_limit;
1443 attr.grh.traffic_class = cmd.attr.grh.traffic_class;
1444 memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
1446 ah = ib_create_ah(pd, &attr);
1455 if (!idr_pre_get(&ib_uverbs_ah_idr, GFP_KERNEL)) {
1460 ret = idr_get_new(&ib_uverbs_ah_idr, ah, &uobj->id);
1467 resp.ah_handle = uobj->id;
1469 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1470 &resp, sizeof resp)) {
1476 list_add_tail(&uobj->list, &file->ucontext->ah_list);
1479 up(&ib_uverbs_idr_mutex);
1484 idr_remove(&ib_uverbs_ah_idr, uobj->id);
1490 up(&ib_uverbs_idr_mutex);
1496 ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
1497 const char __user *buf, int in_len, int out_len)
1499 struct ib_uverbs_destroy_ah cmd;
1501 struct ib_uobject *uobj;
1504 if (copy_from_user(&cmd, buf, sizeof cmd))
1507 down(&ib_uverbs_idr_mutex);
1509 ah = idr_find(&ib_uverbs_ah_idr, cmd.ah_handle);
1510 if (!ah || ah->uobject->context != file->ucontext)
1515 ret = ib_destroy_ah(ah);
1519 idr_remove(&ib_uverbs_ah_idr, cmd.ah_handle);
1522 list_del(&uobj->list);
1528 up(&ib_uverbs_idr_mutex);
1530 return ret ? ret : in_len;
1533 ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
1534 const char __user *buf, int in_len,
1537 struct ib_uverbs_attach_mcast cmd;
1541 if (copy_from_user(&cmd, buf, sizeof cmd))
1544 down(&ib_uverbs_idr_mutex);
1546 qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
1547 if (qp && qp->uobject->context == file->ucontext)
1548 ret = ib_attach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid);
1550 up(&ib_uverbs_idr_mutex);
1552 return ret ? ret : in_len;
1555 ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
1556 const char __user *buf, int in_len,
1559 struct ib_uverbs_detach_mcast cmd;
1563 if (copy_from_user(&cmd, buf, sizeof cmd))
1566 down(&ib_uverbs_idr_mutex);
1568 qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
1569 if (qp && qp->uobject->context == file->ucontext)
1570 ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid);
1572 up(&ib_uverbs_idr_mutex);
1574 return ret ? ret : in_len;
1577 ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
1578 const char __user *buf, int in_len,
1581 struct ib_uverbs_create_srq cmd;
1582 struct ib_uverbs_create_srq_resp resp;
1583 struct ib_udata udata;
1584 struct ib_uevent_object *uobj;
1587 struct ib_srq_init_attr attr;
1590 if (out_len < sizeof resp)
1593 if (copy_from_user(&cmd, buf, sizeof cmd))
1596 INIT_UDATA(&udata, buf + sizeof cmd,
1597 (unsigned long) cmd.response + sizeof resp,
1598 in_len - sizeof cmd, out_len - sizeof resp);
1600 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
1604 down(&ib_uverbs_idr_mutex);
1606 pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
1608 if (!pd || pd->uobject->context != file->ucontext) {
1613 attr.event_handler = ib_uverbs_srq_event_handler;
1614 attr.srq_context = file;
1615 attr.attr.max_wr = cmd.max_wr;
1616 attr.attr.max_sge = cmd.max_sge;
1617 attr.attr.srq_limit = cmd.srq_limit;
1619 uobj->uobject.user_handle = cmd.user_handle;
1620 uobj->uobject.context = file->ucontext;
1621 uobj->events_reported = 0;
1622 INIT_LIST_HEAD(&uobj->event_list);
1624 srq = pd->device->create_srq(pd, &attr, &udata);
1630 srq->device = pd->device;
1632 srq->uobject = &uobj->uobject;
1633 srq->event_handler = attr.event_handler;
1634 srq->srq_context = attr.srq_context;
1635 atomic_inc(&pd->usecnt);
1636 atomic_set(&srq->usecnt, 0);
1638 memset(&resp, 0, sizeof resp);
1641 if (!idr_pre_get(&ib_uverbs_srq_idr, GFP_KERNEL)) {
1646 ret = idr_get_new(&ib_uverbs_srq_idr, srq, &uobj->uobject.id);
1653 resp.srq_handle = uobj->uobject.id;
1655 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1656 &resp, sizeof resp)) {
1662 list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list);
1665 up(&ib_uverbs_idr_mutex);
1670 idr_remove(&ib_uverbs_srq_idr, uobj->uobject.id);
1673 ib_destroy_srq(srq);
1676 up(&ib_uverbs_idr_mutex);
1682 ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
1683 const char __user *buf, int in_len,
1686 struct ib_uverbs_modify_srq cmd;
1688 struct ib_srq_attr attr;
1691 if (copy_from_user(&cmd, buf, sizeof cmd))
1694 down(&ib_uverbs_idr_mutex);
1696 srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle);
1697 if (!srq || srq->uobject->context != file->ucontext) {
1702 attr.max_wr = cmd.max_wr;
1703 attr.max_sge = cmd.max_sge;
1704 attr.srq_limit = cmd.srq_limit;
1706 ret = ib_modify_srq(srq, &attr, cmd.attr_mask);
1709 up(&ib_uverbs_idr_mutex);
1711 return ret ? ret : in_len;
1714 ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
1715 const char __user *buf, int in_len,
1718 struct ib_uverbs_destroy_srq cmd;
1719 struct ib_uverbs_destroy_srq_resp resp;
1721 struct ib_uevent_object *uobj;
1724 if (copy_from_user(&cmd, buf, sizeof cmd))
1727 down(&ib_uverbs_idr_mutex);
1729 memset(&resp, 0, sizeof resp);
1731 srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle);
1732 if (!srq || srq->uobject->context != file->ucontext)
1735 uobj = container_of(srq->uobject, struct ib_uevent_object, uobject);
1737 ret = ib_destroy_srq(srq);
1741 idr_remove(&ib_uverbs_srq_idr, cmd.srq_handle);
1744 list_del(&uobj->uobject.list);
1747 ib_uverbs_release_uevent(file, uobj);
1749 resp.events_reported = uobj->events_reported;
1753 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1754 &resp, sizeof resp))
1758 up(&ib_uverbs_idr_mutex);
1760 return ret ? ret : in_len;