| /* |
| * Copyright (c) 2005 Topspin Communications. All rights reserved. |
| * Copyright (c) 2005 Cisco Systems. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| * $Id: uverbs_cmd.c 2708 2005-06-24 17:27:21Z roland $ |
| */ |
| |
| #include <asm/uaccess.h> |
| |
| #include "uverbs.h" |
| |
| #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \ |
| do { \ |
| (udata)->inbuf = (void __user *) (ibuf); \ |
| (udata)->outbuf = (void __user *) (obuf); \ |
| (udata)->inlen = (ilen); \ |
| (udata)->outlen = (olen); \ |
| } while (0) |
| |
| ssize_t ib_uverbs_query_params(struct ib_uverbs_file *file, |
| const char __user *buf, |
| int in_len, int out_len) |
| { |
| struct ib_uverbs_query_params cmd; |
| struct ib_uverbs_query_params_resp resp; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| resp.num_cq_events = file->device->num_comp; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, &resp, sizeof resp)) |
| return -EFAULT; |
| |
| return in_len; |
| } |
| |
| ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
| const char __user *buf, |
| int in_len, int out_len) |
| { |
| struct ib_uverbs_get_context cmd; |
| struct ib_uverbs_get_context_resp resp; |
| struct ib_udata udata; |
| struct ib_device *ibdev = file->device->ib_dev; |
| struct ib_ucontext *ucontext; |
| int i; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| down(&file->mutex); |
| |
| if (file->ucontext) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
| if (IS_ERR(ucontext)) |
| return PTR_ERR(file->ucontext); |
| |
| ucontext->device = ibdev; |
| INIT_LIST_HEAD(&ucontext->pd_list); |
| INIT_LIST_HEAD(&ucontext->mr_list); |
| INIT_LIST_HEAD(&ucontext->mw_list); |
| INIT_LIST_HEAD(&ucontext->cq_list); |
| INIT_LIST_HEAD(&ucontext->qp_list); |
| INIT_LIST_HEAD(&ucontext->srq_list); |
| INIT_LIST_HEAD(&ucontext->ah_list); |
| |
| resp.async_fd = file->async_file.fd; |
| for (i = 0; i < file->device->num_comp; ++i) |
| if (copy_to_user((void __user *) (unsigned long) cmd.cq_fd_tab + |
| i * sizeof (__u32), |
| &file->comp_file[i].fd, sizeof (__u32))) { |
| ret = -EFAULT; |
| goto err_free; |
| } |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_free; |
| } |
| |
| file->ucontext = ucontext; |
| up(&file->mutex); |
| |
| return in_len; |
| |
| err_free: |
| ibdev->dealloc_ucontext(ucontext); |
| |
| err: |
| up(&file->mutex); |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, |
| const char __user *buf, |
| int in_len, int out_len) |
| { |
| struct ib_uverbs_query_device cmd; |
| struct ib_uverbs_query_device_resp resp; |
| struct ib_device_attr attr; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| ret = ib_query_device(file->device->ib_dev, &attr); |
| if (ret) |
| return ret; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| resp.fw_ver = attr.fw_ver; |
| resp.node_guid = attr.node_guid; |
| resp.sys_image_guid = attr.sys_image_guid; |
| resp.max_mr_size = attr.max_mr_size; |
| resp.page_size_cap = attr.page_size_cap; |
| resp.vendor_id = attr.vendor_id; |
| resp.vendor_part_id = attr.vendor_part_id; |
| resp.hw_ver = attr.hw_ver; |
| resp.max_qp = attr.max_qp; |
| resp.max_qp_wr = attr.max_qp_wr; |
| resp.device_cap_flags = attr.device_cap_flags; |
| resp.max_sge = attr.max_sge; |
| resp.max_sge_rd = attr.max_sge_rd; |
| resp.max_cq = attr.max_cq; |
| resp.max_cqe = attr.max_cqe; |
| resp.max_mr = attr.max_mr; |
| resp.max_pd = attr.max_pd; |
| resp.max_qp_rd_atom = attr.max_qp_rd_atom; |
| resp.max_ee_rd_atom = attr.max_ee_rd_atom; |
| resp.max_res_rd_atom = attr.max_res_rd_atom; |
| resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; |
| resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; |
| resp.atomic_cap = attr.atomic_cap; |
| resp.max_ee = attr.max_ee; |
| resp.max_rdd = attr.max_rdd; |
| resp.max_mw = attr.max_mw; |
| resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; |
| resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; |
| resp.max_mcast_grp = attr.max_mcast_grp; |
| resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; |
| resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; |
| resp.max_ah = attr.max_ah; |
| resp.max_fmr = attr.max_fmr; |
| resp.max_map_per_fmr = attr.max_map_per_fmr; |
| resp.max_srq = attr.max_srq; |
| resp.max_srq_wr = attr.max_srq_wr; |
| resp.max_srq_sge = attr.max_srq_sge; |
| resp.max_pkeys = attr.max_pkeys; |
| resp.local_ca_ack_delay = attr.local_ca_ack_delay; |
| resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| return -EFAULT; |
| |
| return in_len; |
| } |
| |
| ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, |
| const char __user *buf, |
| int in_len, int out_len) |
| { |
| struct ib_uverbs_query_port cmd; |
| struct ib_uverbs_query_port_resp resp; |
| struct ib_port_attr attr; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); |
| if (ret) |
| return ret; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| resp.state = attr.state; |
| resp.max_mtu = attr.max_mtu; |
| resp.active_mtu = attr.active_mtu; |
| resp.gid_tbl_len = attr.gid_tbl_len; |
| resp.port_cap_flags = attr.port_cap_flags; |
| resp.max_msg_sz = attr.max_msg_sz; |
| resp.bad_pkey_cntr = attr.bad_pkey_cntr; |
| resp.qkey_viol_cntr = attr.qkey_viol_cntr; |
| resp.pkey_tbl_len = attr.pkey_tbl_len; |
| resp.lid = attr.lid; |
| resp.sm_lid = attr.sm_lid; |
| resp.lmc = attr.lmc; |
| resp.max_vl_num = attr.max_vl_num; |
| resp.sm_sl = attr.sm_sl; |
| resp.subnet_timeout = attr.subnet_timeout; |
| resp.init_type_reply = attr.init_type_reply; |
| resp.active_width = attr.active_width; |
| resp.active_speed = attr.active_speed; |
| resp.phys_state = attr.phys_state; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| return -EFAULT; |
| |
| return in_len; |
| } |
| |
| ssize_t ib_uverbs_query_gid(struct ib_uverbs_file *file, |
| const char __user *buf, |
| int in_len, int out_len) |
| { |
| struct ib_uverbs_query_gid cmd; |
| struct ib_uverbs_query_gid_resp resp; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| ret = ib_query_gid(file->device->ib_dev, cmd.port_num, cmd.index, |
| (union ib_gid *) resp.gid); |
| if (ret) |
| return ret; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| return -EFAULT; |
| |
| return in_len; |
| } |
| |
| ssize_t ib_uverbs_query_pkey(struct ib_uverbs_file *file, |
| const char __user *buf, |
| int in_len, int out_len) |
| { |
| struct ib_uverbs_query_pkey cmd; |
| struct ib_uverbs_query_pkey_resp resp; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| ret = ib_query_pkey(file->device->ib_dev, cmd.port_num, cmd.index, |
| &resp.pkey); |
| if (ret) |
| return ret; |
| |
| 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; |
| |
| uobj->context = file->ucontext; |
| |
| 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); |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_pd_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_pd; |
| } |
| |
| down(&ib_uverbs_idr_mutex); |
| ret = idr_get_new(&ib_uverbs_pd_idr, pd, &uobj->id); |
| up(&ib_uverbs_idr_mutex); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_pd; |
| |
| down(&file->mutex); |
| list_add_tail(&uobj->list, &file->ucontext->pd_list); |
| up(&file->mutex); |
| |
| 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_list; |
| } |
| |
| return in_len; |
| |
| err_list: |
| down(&file->mutex); |
| list_del(&uobj->list); |
| up(&file->mutex); |
| |
| down(&ib_uverbs_idr_mutex); |
| idr_remove(&ib_uverbs_pd_idr, uobj->id); |
| up(&ib_uverbs_idr_mutex); |
| |
| err_pd: |
| ib_dealloc_pd(pd); |
| |
| err: |
| kfree(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_pd *pd; |
| struct ib_uobject *uobj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| if (!pd || pd->uobject->context != file->ucontext) |
| goto out; |
| |
| uobj = pd->uobject; |
| |
| ret = ib_dealloc_pd(pd); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_pd_idr, cmd.pd_handle); |
| |
| down(&file->mutex); |
| list_del(&uobj->list); |
| up(&file->mutex); |
| |
| kfree(uobj); |
| |
| out: |
| up(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : 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_umem_object *obj; |
| 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; |
| |
| obj = kmalloc(sizeof *obj, GFP_KERNEL); |
| if (!obj) |
| return -ENOMEM; |
| |
| obj->uobject.context = file->ucontext; |
| |
| /* |
| * We ask for writable memory if any access flags other than |
| * "remote read" are set. "Local write" and "remote write" |
| * obviously require write access. "Remote atomic" can do |
| * things like fetch and add, which will modify memory, and |
| * "MW bind" can change permissions by binding a window. |
| */ |
| ret = ib_umem_get(file->device->ib_dev, &obj->umem, |
| (void *) (unsigned long) cmd.start, cmd.length, |
| !!(cmd.access_flags & ~IB_ACCESS_REMOTE_READ)); |
| if (ret) |
| goto err_free; |
| |
| obj->umem.virt_base = cmd.hca_va; |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| if (!pd || pd->uobject->context != file->ucontext) { |
| ret = -EINVAL; |
| goto err_up; |
| } |
| |
| if (!pd->device->reg_user_mr) { |
| ret = -ENOSYS; |
| goto err_up; |
| } |
| |
| mr = pd->device->reg_user_mr(pd, &obj->umem, cmd.access_flags, &udata); |
| if (IS_ERR(mr)) { |
| ret = PTR_ERR(mr); |
| goto err_up; |
| } |
| |
| mr->device = pd->device; |
| mr->pd = pd; |
| mr->uobject = &obj->uobject; |
| atomic_inc(&pd->usecnt); |
| atomic_set(&mr->usecnt, 0); |
| |
| memset(&resp, 0, sizeof resp); |
| resp.lkey = mr->lkey; |
| resp.rkey = mr->rkey; |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_mr_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_unreg; |
| } |
| |
| ret = idr_get_new(&ib_uverbs_mr_idr, mr, &obj->uobject.id); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_unreg; |
| |
| resp.mr_handle = obj->uobject.id; |
| |
| down(&file->mutex); |
| list_add_tail(&obj->uobject.list, &file->ucontext->mr_list); |
| up(&file->mutex); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_list; |
| } |
| |
| up(&ib_uverbs_idr_mutex); |
| |
| return in_len; |
| |
| err_list: |
| down(&file->mutex); |
| list_del(&obj->uobject.list); |
| up(&file->mutex); |
| |
| err_unreg: |
| ib_dereg_mr(mr); |
| |
| err_up: |
| up(&ib_uverbs_idr_mutex); |
| |
| ib_umem_release(file->device->ib_dev, &obj->umem); |
| |
| err_free: |
| kfree(obj); |
| 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_umem_object *memobj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| mr = idr_find(&ib_uverbs_mr_idr, cmd.mr_handle); |
| if (!mr || mr->uobject->context != file->ucontext) |
| goto out; |
| |
| memobj = container_of(mr->uobject, struct ib_umem_object, uobject); |
| |
| ret = ib_dereg_mr(mr); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_mr_idr, cmd.mr_handle); |
| |
| down(&file->mutex); |
| list_del(&memobj->uobject.list); |
| up(&file->mutex); |
| |
| ib_umem_release(file->device->ib_dev, &memobj->umem); |
| kfree(memobj); |
| |
| out: |
| up(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : 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 *uobj; |
| 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.event_handler >= file->device->num_comp) |
| return -EINVAL; |
| |
| uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| if (!uobj) |
| return -ENOMEM; |
| |
| uobj->uobject.user_handle = cmd.user_handle; |
| uobj->uobject.context = file->ucontext; |
| uobj->comp_events_reported = 0; |
| uobj->async_events_reported = 0; |
| INIT_LIST_HEAD(&uobj->comp_list); |
| INIT_LIST_HEAD(&uobj->async_list); |
| |
| cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, |
| file->ucontext, &udata); |
| if (IS_ERR(cq)) { |
| ret = PTR_ERR(cq); |
| goto err; |
| } |
| |
| cq->device = file->device->ib_dev; |
| cq->uobject = &uobj->uobject; |
| cq->comp_handler = ib_uverbs_comp_handler; |
| cq->event_handler = ib_uverbs_cq_event_handler; |
| cq->cq_context = file; |
| atomic_set(&cq->usecnt, 0); |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_cq_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_cq; |
| } |
| |
| down(&ib_uverbs_idr_mutex); |
| ret = idr_get_new(&ib_uverbs_cq_idr, cq, &uobj->uobject.id); |
| up(&ib_uverbs_idr_mutex); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_cq; |
| |
| down(&file->mutex); |
| list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list); |
| up(&file->mutex); |
| |
| memset(&resp, 0, sizeof resp); |
| resp.cq_handle = uobj->uobject.id; |
| resp.cqe = cq->cqe; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_list; |
| } |
| |
| return in_len; |
| |
| err_list: |
| down(&file->mutex); |
| list_del(&uobj->uobject.list); |
| up(&file->mutex); |
| |
| down(&ib_uverbs_idr_mutex); |
| idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id); |
| up(&ib_uverbs_idr_mutex); |
| |
| err_cq: |
| ib_destroy_cq(cq); |
| |
| err: |
| kfree(uobj); |
| return ret; |
| } |
| |
| 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_cq *cq; |
| struct ib_ucq_object *uobj; |
| struct ib_uverbs_event *evt, *tmp; |
| u64 user_handle; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
| if (!cq || cq->uobject->context != file->ucontext) |
| goto out; |
| |
| user_handle = cq->uobject->user_handle; |
| uobj = container_of(cq->uobject, struct ib_ucq_object, uobject); |
| |
| ret = ib_destroy_cq(cq); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_cq_idr, cmd.cq_handle); |
| |
| down(&file->mutex); |
| list_del(&uobj->uobject.list); |
| up(&file->mutex); |
| |
| spin_lock_irq(&file->comp_file[0].lock); |
| list_for_each_entry_safe(evt, tmp, &uobj->comp_list, obj_list) { |
| list_del(&evt->list); |
| kfree(evt); |
| } |
| spin_unlock_irq(&file->comp_file[0].lock); |
| |
| spin_lock_irq(&file->async_file.lock); |
| list_for_each_entry_safe(evt, tmp, &uobj->async_list, obj_list) { |
| list_del(&evt->list); |
| kfree(evt); |
| } |
| spin_unlock_irq(&file->async_file.lock); |
| |
| resp.comp_events_reported = uobj->comp_events_reported; |
| resp.async_events_reported = uobj->async_events_reported; |
| |
| kfree(uobj); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| up(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : 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_uevent_object *uobj; |
| 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); |
| |
| uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| if (!uobj) |
| return -ENOMEM; |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| scq = idr_find(&ib_uverbs_cq_idr, cmd.send_cq_handle); |
| rcq = idr_find(&ib_uverbs_cq_idr, cmd.recv_cq_handle); |
| srq = cmd.is_srq ? idr_find(&ib_uverbs_srq_idr, cmd.srq_handle) : NULL; |
| |
| if (!pd || pd->uobject->context != file->ucontext || |
| !scq || scq->uobject->context != file->ucontext || |
| !rcq || rcq->uobject->context != file->ucontext || |
| (cmd.is_srq && (!srq || srq->uobject->context != file->ucontext))) { |
| ret = -EINVAL; |
| goto err_up; |
| } |
| |
| 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.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; |
| |
| uobj->uobject.user_handle = cmd.user_handle; |
| uobj->uobject.context = file->ucontext; |
| uobj->events_reported = 0; |
| INIT_LIST_HEAD(&uobj->event_list); |
| |
| qp = pd->device->create_qp(pd, &attr, &udata); |
| if (IS_ERR(qp)) { |
| ret = PTR_ERR(qp); |
| goto err_up; |
| } |
| |
| 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 = &uobj->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); |
| |
| memset(&resp, 0, sizeof resp); |
| resp.qpn = qp->qp_num; |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_qp_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_destroy; |
| } |
| |
| ret = idr_get_new(&ib_uverbs_qp_idr, qp, &uobj->uobject.id); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_destroy; |
| |
| resp.qp_handle = uobj->uobject.id; |
| |
| down(&file->mutex); |
| list_add_tail(&uobj->uobject.list, &file->ucontext->qp_list); |
| up(&file->mutex); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_list; |
| } |
| |
| up(&ib_uverbs_idr_mutex); |
| |
| return in_len; |
| |
| err_list: |
| down(&file->mutex); |
| list_del(&uobj->uobject.list); |
| up(&file->mutex); |
| |
| err_destroy: |
| ib_destroy_qp(qp); |
| |
| err_up: |
| up(&ib_uverbs_idr_mutex); |
| |
| kfree(uobj); |
| return ret; |
| } |
| |
| 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_qp *qp; |
| struct ib_qp_attr *attr; |
| int ret; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| attr = kmalloc(sizeof *attr, GFP_KERNEL); |
| if (!attr) |
| return -ENOMEM; |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (!qp || qp->uobject->context != file->ucontext) { |
| 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.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 = ib_modify_qp(qp, attr, cmd.attr_mask); |
| if (ret) |
| goto out; |
| |
| ret = in_len; |
| |
| out: |
| up(&ib_uverbs_idr_mutex); |
| 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_qp *qp; |
| struct ib_uevent_object *uobj; |
| struct ib_uverbs_event *evt, *tmp; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (!qp || qp->uobject->context != file->ucontext) |
| goto out; |
| |
| uobj = container_of(qp->uobject, struct ib_uevent_object, uobject); |
| |
| ret = ib_destroy_qp(qp); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_qp_idr, cmd.qp_handle); |
| |
| down(&file->mutex); |
| list_del(&uobj->uobject.list); |
| up(&file->mutex); |
| |
| spin_lock_irq(&file->async_file.lock); |
| list_for_each_entry_safe(evt, tmp, &uobj->event_list, obj_list) { |
| list_del(&evt->list); |
| kfree(evt); |
| } |
| spin_unlock_irq(&file->async_file.lock); |
| |
| resp.events_reported = uobj->events_reported; |
| |
| kfree(uobj); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| up(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : 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; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (qp && qp->uobject->context == file->ucontext) |
| ret = ib_attach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
| |
| up(&ib_uverbs_idr_mutex); |
| |
| 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_qp *qp; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); |
| if (qp && qp->uobject->context == file->ucontext) |
| ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
| |
| up(&ib_uverbs_idr_mutex); |
| |
| 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 *uobj; |
| 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); |
| |
| uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
| if (!uobj) |
| return -ENOMEM; |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); |
| |
| if (!pd || pd->uobject->context != file->ucontext) { |
| ret = -EINVAL; |
| goto err_up; |
| } |
| |
| 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; |
| |
| uobj->uobject.user_handle = cmd.user_handle; |
| uobj->uobject.context = file->ucontext; |
| uobj->events_reported = 0; |
| INIT_LIST_HEAD(&uobj->event_list); |
| |
| srq = pd->device->create_srq(pd, &attr, &udata); |
| if (IS_ERR(srq)) { |
| ret = PTR_ERR(srq); |
| goto err_up; |
| } |
| |
| srq->device = pd->device; |
| srq->pd = pd; |
| srq->uobject = &uobj->uobject; |
| srq->event_handler = attr.event_handler; |
| srq->srq_context = attr.srq_context; |
| atomic_inc(&pd->usecnt); |
| atomic_set(&srq->usecnt, 0); |
| |
| memset(&resp, 0, sizeof resp); |
| |
| retry: |
| if (!idr_pre_get(&ib_uverbs_srq_idr, GFP_KERNEL)) { |
| ret = -ENOMEM; |
| goto err_destroy; |
| } |
| |
| ret = idr_get_new(&ib_uverbs_srq_idr, srq, &uobj->uobject.id); |
| |
| if (ret == -EAGAIN) |
| goto retry; |
| if (ret) |
| goto err_destroy; |
| |
| resp.srq_handle = uobj->uobject.id; |
| |
| down(&file->mutex); |
| list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list); |
| up(&file->mutex); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_list; |
| } |
| |
| up(&ib_uverbs_idr_mutex); |
| |
| return in_len; |
| |
| err_list: |
| down(&file->mutex); |
| list_del(&uobj->uobject.list); |
| up(&file->mutex); |
| |
| err_destroy: |
| ib_destroy_srq(srq); |
| |
| err_up: |
| up(&ib_uverbs_idr_mutex); |
| |
| kfree(uobj); |
| 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_srq *srq; |
| struct ib_srq_attr attr; |
| int ret; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
| if (!srq || srq->uobject->context != file->ucontext) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| attr.max_wr = cmd.max_wr; |
| attr.max_sge = cmd.max_sge; |
| attr.srq_limit = cmd.srq_limit; |
| |
| ret = ib_modify_srq(srq, &attr, cmd.attr_mask); |
| |
| out: |
| up(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : 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_srq *srq; |
| struct ib_uevent_object *uobj; |
| struct ib_uverbs_event *evt, *tmp; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| down(&ib_uverbs_idr_mutex); |
| |
| memset(&resp, 0, sizeof resp); |
| |
| srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
| if (!srq || srq->uobject->context != file->ucontext) |
| goto out; |
| |
| uobj = container_of(srq->uobject, struct ib_uevent_object, uobject); |
| |
| ret = ib_destroy_srq(srq); |
| if (ret) |
| goto out; |
| |
| idr_remove(&ib_uverbs_srq_idr, cmd.srq_handle); |
| |
| down(&file->mutex); |
| list_del(&uobj->uobject.list); |
| up(&file->mutex); |
| |
| spin_lock_irq(&file->async_file.lock); |
| list_for_each_entry_safe(evt, tmp, &uobj->event_list, obj_list) { |
| list_del(&evt->list); |
| kfree(evt); |
| } |
| spin_unlock_irq(&file->async_file.lock); |
| |
| resp.events_reported = uobj->events_reported; |
| |
| kfree(uobj); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| up(&ib_uverbs_idr_mutex); |
| |
| return ret ? ret : in_len; |
| } |