| /* |
| * Copyright (c) 2005 Topspin Communications. All rights reserved. |
| * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
| * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
| * Copyright (c) 2006 Mellanox Technologies. 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. |
| */ |
| |
| #include <linux/file.h> |
| #include <linux/fs.h> |
| #include <linux/slab.h> |
| #include <linux/sched.h> |
| |
| #include <linux/uaccess.h> |
| |
| #include <rdma/uverbs_types.h> |
| #include <rdma/uverbs_std_types.h> |
| #include "rdma_core.h" |
| |
| #include "uverbs.h" |
| #include "core_priv.h" |
| |
| static struct ib_uverbs_completion_event_file * |
| ib_uverbs_lookup_comp_file(int fd, struct ib_ucontext *context) |
| { |
| struct ib_uobject *uobj = uobj_get_read(uobj_get_type(comp_channel), |
| fd, context); |
| struct ib_uobject_file *uobj_file; |
| |
| if (IS_ERR(uobj)) |
| return (void *)uobj; |
| |
| uverbs_uobject_get(uobj); |
| uobj_put_read(uobj); |
| |
| uobj_file = container_of(uobj, struct ib_uobject_file, uobj); |
| return container_of(uobj_file, struct ib_uverbs_completion_event_file, |
| uobj_file); |
| } |
| |
| ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| 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_ucontext *ucontext; |
| struct file *filp; |
| struct ib_rdmacg_object cg_obj; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| mutex_lock(&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); |
| |
| ret = ib_rdmacg_try_charge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); |
| if (ret) |
| goto err; |
| |
| ucontext = ib_dev->alloc_ucontext(ib_dev, &udata); |
| if (IS_ERR(ucontext)) { |
| ret = PTR_ERR(ucontext); |
| goto err_alloc; |
| } |
| |
| ucontext->device = ib_dev; |
| ucontext->cg_obj = cg_obj; |
| /* ufile is required when some objects are released */ |
| ucontext->ufile = file; |
| uverbs_initialize_ucontext(ucontext); |
| |
| rcu_read_lock(); |
| ucontext->tgid = get_task_pid(current->group_leader, PIDTYPE_PID); |
| rcu_read_unlock(); |
| ucontext->closing = 0; |
| |
| #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING |
| ucontext->umem_tree = RB_ROOT; |
| init_rwsem(&ucontext->umem_rwsem); |
| ucontext->odp_mrs_count = 0; |
| INIT_LIST_HEAD(&ucontext->no_private_counters); |
| |
| if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) |
| ucontext->invalidate_range = NULL; |
| |
| #endif |
| |
| resp.num_comp_vectors = file->device->num_comp_vectors; |
| |
| ret = get_unused_fd_flags(O_CLOEXEC); |
| if (ret < 0) |
| goto err_free; |
| resp.async_fd = ret; |
| |
| filp = ib_uverbs_alloc_async_event_file(file, ib_dev); |
| if (IS_ERR(filp)) { |
| ret = PTR_ERR(filp); |
| goto err_fd; |
| } |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_file; |
| } |
| |
| file->ucontext = ucontext; |
| |
| fd_install(resp.async_fd, filp); |
| |
| mutex_unlock(&file->mutex); |
| |
| return in_len; |
| |
| err_file: |
| ib_uverbs_free_async_event_file(file); |
| fput(filp); |
| |
| err_fd: |
| put_unused_fd(resp.async_fd); |
| |
| err_free: |
| put_pid(ucontext->tgid); |
| ib_dev->dealloc_ucontext(ucontext); |
| |
| err_alloc: |
| ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE); |
| |
| err: |
| mutex_unlock(&file->mutex); |
| return ret; |
| } |
| |
| static void copy_query_dev_fields(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_uverbs_query_device_resp *resp, |
| struct ib_device_attr *attr) |
| { |
| resp->fw_ver = attr->fw_ver; |
| resp->node_guid = ib_dev->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 = lower_32_bits(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 = ib_dev->phys_port_cnt; |
| } |
| |
| ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, |
| int in_len, int out_len) |
| { |
| struct ib_uverbs_query_device cmd; |
| struct ib_uverbs_query_device_resp resp; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| memset(&resp, 0, sizeof resp); |
| copy_query_dev_fields(file, ib_dev, &resp, &ib_dev->attrs); |
| |
| 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, |
| struct ib_device *ib_dev, |
| 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(ib_dev, cmd.port_num, &attr); |
| if (ret) |
| return ret; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| resp.state = attr.state; |
| resp.max_mtu = attr.max_mtu; |
| resp.active_mtu = attr.active_mtu; |
| resp.gid_tbl_len = attr.gid_tbl_len; |
| resp.port_cap_flags = attr.port_cap_flags; |
| resp.max_msg_sz = attr.max_msg_sz; |
| resp.bad_pkey_cntr = attr.bad_pkey_cntr; |
| resp.qkey_viol_cntr = attr.qkey_viol_cntr; |
| resp.pkey_tbl_len = attr.pkey_tbl_len; |
| resp.lid = attr.lid; |
| resp.sm_lid = attr.sm_lid; |
| resp.lmc = attr.lmc; |
| resp.max_vl_num = attr.max_vl_num; |
| resp.sm_sl = attr.sm_sl; |
| resp.subnet_timeout = attr.subnet_timeout; |
| resp.init_type_reply = attr.init_type_reply; |
| resp.active_width = attr.active_width; |
| resp.active_speed = attr.active_speed; |
| resp.phys_state = attr.phys_state; |
| resp.link_layer = rdma_port_get_link_layer(ib_dev, |
| cmd.port_num); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| return -EFAULT; |
| |
| return in_len; |
| } |
| |
| ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| 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 = uobj_alloc(uobj_get_type(pd), file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| pd = ib_dev->alloc_pd(ib_dev, file->ucontext, &udata); |
| if (IS_ERR(pd)) { |
| ret = PTR_ERR(pd); |
| goto err; |
| } |
| |
| pd->device = ib_dev; |
| pd->uobject = uobj; |
| pd->__internal_mr = NULL; |
| atomic_set(&pd->usecnt, 0); |
| |
| uobj->object = pd; |
| memset(&resp, 0, sizeof resp); |
| resp.pd_handle = uobj->id; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_copy; |
| } |
| |
| uobj_alloc_commit(uobj); |
| |
| return in_len; |
| |
| err_copy: |
| ib_dealloc_pd(pd); |
| |
| err: |
| uobj_alloc_abort(uobj); |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, |
| int in_len, int out_len) |
| { |
| struct ib_uverbs_dealloc_pd cmd; |
| struct ib_uobject *uobj; |
| int ret; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| uobj = uobj_get_write(uobj_get_type(pd), cmd.pd_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| ret = uobj_remove_commit(uobj); |
| |
| return ret ?: in_len; |
| } |
| |
| struct xrcd_table_entry { |
| struct rb_node node; |
| struct ib_xrcd *xrcd; |
| struct inode *inode; |
| }; |
| |
| static int xrcd_table_insert(struct ib_uverbs_device *dev, |
| struct inode *inode, |
| struct ib_xrcd *xrcd) |
| { |
| struct xrcd_table_entry *entry, *scan; |
| struct rb_node **p = &dev->xrcd_tree.rb_node; |
| struct rb_node *parent = NULL; |
| |
| entry = kmalloc(sizeof *entry, GFP_KERNEL); |
| if (!entry) |
| return -ENOMEM; |
| |
| entry->xrcd = xrcd; |
| entry->inode = inode; |
| |
| while (*p) { |
| parent = *p; |
| scan = rb_entry(parent, struct xrcd_table_entry, node); |
| |
| if (inode < scan->inode) { |
| p = &(*p)->rb_left; |
| } else if (inode > scan->inode) { |
| p = &(*p)->rb_right; |
| } else { |
| kfree(entry); |
| return -EEXIST; |
| } |
| } |
| |
| rb_link_node(&entry->node, parent, p); |
| rb_insert_color(&entry->node, &dev->xrcd_tree); |
| igrab(inode); |
| return 0; |
| } |
| |
| static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, |
| struct inode *inode) |
| { |
| struct xrcd_table_entry *entry; |
| struct rb_node *p = dev->xrcd_tree.rb_node; |
| |
| while (p) { |
| entry = rb_entry(p, struct xrcd_table_entry, node); |
| |
| if (inode < entry->inode) |
| p = p->rb_left; |
| else if (inode > entry->inode) |
| p = p->rb_right; |
| else |
| return entry; |
| } |
| |
| return NULL; |
| } |
| |
| static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) |
| { |
| struct xrcd_table_entry *entry; |
| |
| entry = xrcd_table_search(dev, inode); |
| if (!entry) |
| return NULL; |
| |
| return entry->xrcd; |
| } |
| |
| static void xrcd_table_delete(struct ib_uverbs_device *dev, |
| struct inode *inode) |
| { |
| struct xrcd_table_entry *entry; |
| |
| entry = xrcd_table_search(dev, inode); |
| if (entry) { |
| iput(inode); |
| rb_erase(&entry->node, &dev->xrcd_tree); |
| kfree(entry); |
| } |
| } |
| |
| ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_open_xrcd cmd; |
| struct ib_uverbs_open_xrcd_resp resp; |
| struct ib_udata udata; |
| struct ib_uxrcd_object *obj; |
| struct ib_xrcd *xrcd = NULL; |
| struct fd f = {NULL, 0}; |
| struct inode *inode = NULL; |
| int ret = 0; |
| int new_xrcd = 0; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| mutex_lock(&file->device->xrcd_tree_mutex); |
| |
| if (cmd.fd != -1) { |
| /* search for file descriptor */ |
| f = fdget(cmd.fd); |
| if (!f.file) { |
| ret = -EBADF; |
| goto err_tree_mutex_unlock; |
| } |
| |
| inode = file_inode(f.file); |
| xrcd = find_xrcd(file->device, inode); |
| if (!xrcd && !(cmd.oflags & O_CREAT)) { |
| /* no file descriptor. Need CREATE flag */ |
| ret = -EAGAIN; |
| goto err_tree_mutex_unlock; |
| } |
| |
| if (xrcd && cmd.oflags & O_EXCL) { |
| ret = -EINVAL; |
| goto err_tree_mutex_unlock; |
| } |
| } |
| |
| obj = (struct ib_uxrcd_object *)uobj_alloc(uobj_get_type(xrcd), |
| file->ucontext); |
| if (IS_ERR(obj)) { |
| ret = PTR_ERR(obj); |
| goto err_tree_mutex_unlock; |
| } |
| |
| if (!xrcd) { |
| xrcd = ib_dev->alloc_xrcd(ib_dev, file->ucontext, &udata); |
| if (IS_ERR(xrcd)) { |
| ret = PTR_ERR(xrcd); |
| goto err; |
| } |
| |
| xrcd->inode = inode; |
| xrcd->device = ib_dev; |
| atomic_set(&xrcd->usecnt, 0); |
| mutex_init(&xrcd->tgt_qp_mutex); |
| INIT_LIST_HEAD(&xrcd->tgt_qp_list); |
| new_xrcd = 1; |
| } |
| |
| atomic_set(&obj->refcnt, 0); |
| obj->uobject.object = xrcd; |
| memset(&resp, 0, sizeof resp); |
| resp.xrcd_handle = obj->uobject.id; |
| |
| if (inode) { |
| if (new_xrcd) { |
| /* create new inode/xrcd table entry */ |
| ret = xrcd_table_insert(file->device, inode, xrcd); |
| if (ret) |
| goto err_dealloc_xrcd; |
| } |
| atomic_inc(&xrcd->usecnt); |
| } |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_copy; |
| } |
| |
| if (f.file) |
| fdput(f); |
| |
| uobj_alloc_commit(&obj->uobject); |
| |
| mutex_unlock(&file->device->xrcd_tree_mutex); |
| return in_len; |
| |
| err_copy: |
| if (inode) { |
| if (new_xrcd) |
| xrcd_table_delete(file->device, inode); |
| atomic_dec(&xrcd->usecnt); |
| } |
| |
| err_dealloc_xrcd: |
| ib_dealloc_xrcd(xrcd); |
| |
| err: |
| uobj_alloc_abort(&obj->uobject); |
| |
| err_tree_mutex_unlock: |
| if (f.file) |
| fdput(f); |
| |
| mutex_unlock(&file->device->xrcd_tree_mutex); |
| |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_close_xrcd cmd; |
| struct ib_uobject *uobj; |
| int ret = 0; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| uobj = uobj_get_write(uobj_get_type(xrcd), cmd.xrcd_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) { |
| mutex_unlock(&file->device->xrcd_tree_mutex); |
| return PTR_ERR(uobj); |
| } |
| |
| ret = uobj_remove_commit(uobj); |
| return ret ?: in_len; |
| } |
| |
| int ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, |
| struct ib_xrcd *xrcd, |
| enum rdma_remove_reason why) |
| { |
| struct inode *inode; |
| int ret; |
| |
| inode = xrcd->inode; |
| if (inode && !atomic_dec_and_test(&xrcd->usecnt)) |
| return 0; |
| |
| ret = ib_dealloc_xrcd(xrcd); |
| |
| if (why == RDMA_REMOVE_DESTROY && ret) |
| atomic_inc(&xrcd->usecnt); |
| else if (inode) |
| xrcd_table_delete(dev, inode); |
| |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_reg_mr cmd; |
| struct ib_uverbs_reg_mr_resp resp; |
| struct ib_udata udata; |
| struct ib_uobject *uobj; |
| struct ib_pd *pd; |
| struct ib_mr *mr; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) |
| return -EINVAL; |
| |
| ret = ib_check_mr_access(cmd.access_flags); |
| if (ret) |
| return ret; |
| |
| uobj = uobj_alloc(uobj_get_type(mr), file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext); |
| if (!pd) { |
| ret = -EINVAL; |
| goto err_free; |
| } |
| |
| if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { |
| if (!(pd->device->attrs.device_cap_flags & |
| IB_DEVICE_ON_DEMAND_PAGING)) { |
| pr_debug("ODP support not available\n"); |
| ret = -EINVAL; |
| goto err_put; |
| } |
| } |
| |
| mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
| cmd.access_flags, &udata); |
| if (IS_ERR(mr)) { |
| ret = PTR_ERR(mr); |
| goto err_put; |
| } |
| |
| mr->device = pd->device; |
| mr->pd = pd; |
| mr->uobject = uobj; |
| atomic_inc(&pd->usecnt); |
| |
| uobj->object = mr; |
| |
| memset(&resp, 0, sizeof resp); |
| resp.lkey = mr->lkey; |
| resp.rkey = mr->rkey; |
| resp.mr_handle = uobj->id; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_copy; |
| } |
| |
| uobj_put_obj_read(pd); |
| |
| uobj_alloc_commit(uobj); |
| |
| return in_len; |
| |
| err_copy: |
| ib_dereg_mr(mr); |
| |
| err_put: |
| uobj_put_obj_read(pd); |
| |
| err_free: |
| uobj_alloc_abort(uobj); |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_rereg_mr cmd; |
| struct ib_uverbs_rereg_mr_resp resp; |
| struct ib_udata udata; |
| struct ib_pd *pd = NULL; |
| struct ib_mr *mr; |
| struct ib_pd *old_pd; |
| int ret; |
| struct ib_uobject *uobj; |
| |
| if (out_len < sizeof(resp)) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof(cmd))) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof(cmd), |
| (unsigned long) cmd.response + sizeof(resp), |
| in_len - sizeof(cmd), out_len - sizeof(resp)); |
| |
| if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) |
| return -EINVAL; |
| |
| if ((cmd.flags & IB_MR_REREG_TRANS) && |
| (!cmd.start || !cmd.hca_va || 0 >= cmd.length || |
| (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) |
| return -EINVAL; |
| |
| uobj = uobj_get_write(uobj_get_type(mr), cmd.mr_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| mr = uobj->object; |
| |
| if (cmd.flags & IB_MR_REREG_ACCESS) { |
| ret = ib_check_mr_access(cmd.access_flags); |
| if (ret) |
| goto put_uobjs; |
| } |
| |
| if (cmd.flags & IB_MR_REREG_PD) { |
| pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext); |
| if (!pd) { |
| ret = -EINVAL; |
| goto put_uobjs; |
| } |
| } |
| |
| old_pd = mr->pd; |
| ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start, |
| cmd.length, cmd.hca_va, |
| cmd.access_flags, pd, &udata); |
| if (!ret) { |
| if (cmd.flags & IB_MR_REREG_PD) { |
| atomic_inc(&pd->usecnt); |
| mr->pd = pd; |
| atomic_dec(&old_pd->usecnt); |
| } |
| } else { |
| goto put_uobj_pd; |
| } |
| |
| memset(&resp, 0, sizeof(resp)); |
| resp.lkey = mr->lkey; |
| resp.rkey = mr->rkey; |
| |
| if (copy_to_user((void __user *)(unsigned long)cmd.response, |
| &resp, sizeof(resp))) |
| ret = -EFAULT; |
| else |
| ret = in_len; |
| |
| put_uobj_pd: |
| if (cmd.flags & IB_MR_REREG_PD) |
| uobj_put_obj_read(pd); |
| |
| put_uobjs: |
| uobj_put_write(uobj); |
| |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_dereg_mr cmd; |
| struct ib_uobject *uobj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| uobj = uobj_get_write(uobj_get_type(mr), cmd.mr_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| ret = uobj_remove_commit(uobj); |
| |
| return ret ?: in_len; |
| } |
| |
| ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_alloc_mw cmd; |
| struct ib_uverbs_alloc_mw_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_pd *pd; |
| struct ib_mw *mw; |
| struct ib_udata udata; |
| int ret; |
| |
| if (out_len < sizeof(resp)) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof(cmd))) |
| return -EFAULT; |
| |
| uobj = uobj_alloc(uobj_get_type(mw), file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext); |
| if (!pd) { |
| ret = -EINVAL; |
| goto err_free; |
| } |
| |
| INIT_UDATA(&udata, buf + sizeof(cmd), |
| (unsigned long)cmd.response + sizeof(resp), |
| in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), |
| out_len - sizeof(resp)); |
| |
| mw = pd->device->alloc_mw(pd, cmd.mw_type, &udata); |
| if (IS_ERR(mw)) { |
| ret = PTR_ERR(mw); |
| goto err_put; |
| } |
| |
| mw->device = pd->device; |
| mw->pd = pd; |
| mw->uobject = uobj; |
| atomic_inc(&pd->usecnt); |
| |
| uobj->object = mw; |
| |
| memset(&resp, 0, sizeof(resp)); |
| resp.rkey = mw->rkey; |
| resp.mw_handle = uobj->id; |
| |
| if (copy_to_user((void __user *)(unsigned long)cmd.response, |
| &resp, sizeof(resp))) { |
| ret = -EFAULT; |
| goto err_copy; |
| } |
| |
| uobj_put_obj_read(pd); |
| uobj_alloc_commit(uobj); |
| |
| return in_len; |
| |
| err_copy: |
| uverbs_dealloc_mw(mw); |
| err_put: |
| uobj_put_obj_read(pd); |
| err_free: |
| uobj_alloc_abort(uobj); |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_dealloc_mw cmd; |
| struct ib_uobject *uobj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof(cmd))) |
| return -EFAULT; |
| |
| uobj = uobj_get_write(uobj_get_type(mw), cmd.mw_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| ret = uobj_remove_commit(uobj); |
| return ret ?: in_len; |
| } |
| |
| ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_create_comp_channel cmd; |
| struct ib_uverbs_create_comp_channel_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_uverbs_completion_event_file *ev_file; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| uobj = uobj_alloc(uobj_get_type(comp_channel), file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| resp.fd = uobj->id; |
| |
| ev_file = container_of(uobj, struct ib_uverbs_completion_event_file, |
| uobj_file.uobj); |
| ib_uverbs_init_event_queue(&ev_file->ev_queue); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| uobj_alloc_abort(uobj); |
| return -EFAULT; |
| } |
| |
| uobj_alloc_commit(uobj); |
| return in_len; |
| } |
| |
| static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw, |
| struct ib_uverbs_ex_create_cq *cmd, |
| size_t cmd_sz, |
| int (*cb)(struct ib_uverbs_file *file, |
| struct ib_ucq_object *obj, |
| struct ib_uverbs_ex_create_cq_resp *resp, |
| struct ib_udata *udata, |
| void *context), |
| void *context) |
| { |
| struct ib_ucq_object *obj; |
| struct ib_uverbs_completion_event_file *ev_file = NULL; |
| struct ib_cq *cq; |
| int ret; |
| struct ib_uverbs_ex_create_cq_resp resp; |
| struct ib_cq_init_attr attr = {}; |
| |
| if (cmd->comp_vector >= file->device->num_comp_vectors) |
| return ERR_PTR(-EINVAL); |
| |
| obj = (struct ib_ucq_object *)uobj_alloc(uobj_get_type(cq), |
| file->ucontext); |
| if (IS_ERR(obj)) |
| return obj; |
| |
| if (cmd->comp_channel >= 0) { |
| ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, |
| file->ucontext); |
| if (IS_ERR(ev_file)) { |
| ret = PTR_ERR(ev_file); |
| goto err; |
| } |
| } |
| |
| obj->uobject.user_handle = cmd->user_handle; |
| obj->uverbs_file = file; |
| obj->comp_events_reported = 0; |
| obj->async_events_reported = 0; |
| INIT_LIST_HEAD(&obj->comp_list); |
| INIT_LIST_HEAD(&obj->async_list); |
| |
| attr.cqe = cmd->cqe; |
| attr.comp_vector = cmd->comp_vector; |
| |
| if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags)) |
| attr.flags = cmd->flags; |
| |
| cq = ib_dev->create_cq(ib_dev, &attr, file->ucontext, uhw); |
| if (IS_ERR(cq)) { |
| ret = PTR_ERR(cq); |
| goto err_file; |
| } |
| |
| cq->device = ib_dev; |
| cq->uobject = &obj->uobject; |
| cq->comp_handler = ib_uverbs_comp_handler; |
| cq->event_handler = ib_uverbs_cq_event_handler; |
| cq->cq_context = ev_file ? &ev_file->ev_queue : NULL; |
| atomic_set(&cq->usecnt, 0); |
| |
| obj->uobject.object = cq; |
| memset(&resp, 0, sizeof resp); |
| resp.base.cq_handle = obj->uobject.id; |
| resp.base.cqe = cq->cqe; |
| |
| resp.response_length = offsetof(typeof(resp), response_length) + |
| sizeof(resp.response_length); |
| |
| ret = cb(file, obj, &resp, ucore, context); |
| if (ret) |
| goto err_cb; |
| |
| uobj_alloc_commit(&obj->uobject); |
| |
| return obj; |
| |
| err_cb: |
| ib_destroy_cq(cq); |
| |
| err_file: |
| if (ev_file) |
| ib_uverbs_release_ucq(file, ev_file, obj); |
| |
| err: |
| uobj_alloc_abort(&obj->uobject); |
| |
| return ERR_PTR(ret); |
| } |
| |
| static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file, |
| struct ib_ucq_object *obj, |
| struct ib_uverbs_ex_create_cq_resp *resp, |
| struct ib_udata *ucore, void *context) |
| { |
| if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_create_cq cmd; |
| struct ib_uverbs_ex_create_cq cmd_ex; |
| struct ib_uverbs_create_cq_resp resp; |
| struct ib_udata ucore; |
| struct ib_udata uhw; |
| struct ib_ucq_object *obj; |
| |
| if (out_len < sizeof(resp)) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof(cmd))) |
| return -EFAULT; |
| |
| INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd), sizeof(resp)); |
| |
| INIT_UDATA(&uhw, buf + sizeof(cmd), |
| (unsigned long)cmd.response + sizeof(resp), |
| in_len - sizeof(cmd), out_len - sizeof(resp)); |
| |
| memset(&cmd_ex, 0, sizeof(cmd_ex)); |
| cmd_ex.user_handle = cmd.user_handle; |
| cmd_ex.cqe = cmd.cqe; |
| cmd_ex.comp_vector = cmd.comp_vector; |
| cmd_ex.comp_channel = cmd.comp_channel; |
| |
| obj = create_cq(file, ib_dev, &ucore, &uhw, &cmd_ex, |
| offsetof(typeof(cmd_ex), comp_channel) + |
| sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb, |
| NULL); |
| |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| |
| return in_len; |
| } |
| |
| static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file, |
| struct ib_ucq_object *obj, |
| struct ib_uverbs_ex_create_cq_resp *resp, |
| struct ib_udata *ucore, void *context) |
| { |
| if (ib_copy_to_udata(ucore, resp, resp->response_length)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_ex_create_cq_resp resp; |
| struct ib_uverbs_ex_create_cq cmd; |
| struct ib_ucq_object *obj; |
| int err; |
| |
| if (ucore->inlen < sizeof(cmd)) |
| return -EINVAL; |
| |
| err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
| if (err) |
| return err; |
| |
| if (cmd.comp_mask) |
| return -EINVAL; |
| |
| if (cmd.reserved) |
| return -EINVAL; |
| |
| if (ucore->outlen < (offsetof(typeof(resp), response_length) + |
| sizeof(resp.response_length))) |
| return -ENOSPC; |
| |
| obj = create_cq(file, ib_dev, ucore, uhw, &cmd, |
| min(ucore->inlen, sizeof(cmd)), |
| ib_uverbs_ex_create_cq_cb, NULL); |
| |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| |
| return 0; |
| } |
| |
| ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_resize_cq cmd; |
| struct ib_uverbs_resize_cq_resp resp = {}; |
| struct ib_udata udata; |
| struct ib_cq *cq; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext); |
| if (!cq) |
| return -EINVAL; |
| |
| ret = cq->device->resize_cq(cq, cmd.cqe, &udata); |
| if (ret) |
| goto out; |
| |
| resp.cqe = cq->cqe; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp.cqe)) |
| ret = -EFAULT; |
| |
| out: |
| uobj_put_obj_read(cq); |
| |
| return ret ? ret : in_len; |
| } |
| |
| static int copy_wc_to_user(void __user *dest, struct ib_wc *wc) |
| { |
| struct ib_uverbs_wc tmp; |
| |
| tmp.wr_id = wc->wr_id; |
| tmp.status = wc->status; |
| tmp.opcode = wc->opcode; |
| tmp.vendor_err = wc->vendor_err; |
| tmp.byte_len = wc->byte_len; |
| tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data; |
| tmp.qp_num = wc->qp->qp_num; |
| tmp.src_qp = wc->src_qp; |
| tmp.wc_flags = wc->wc_flags; |
| tmp.pkey_index = wc->pkey_index; |
| tmp.slid = wc->slid; |
| tmp.sl = wc->sl; |
| tmp.dlid_path_bits = wc->dlid_path_bits; |
| tmp.port_num = wc->port_num; |
| tmp.reserved = 0; |
| |
| if (copy_to_user(dest, &tmp, sizeof tmp)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_poll_cq cmd; |
| struct ib_uverbs_poll_cq_resp resp; |
| u8 __user *header_ptr; |
| u8 __user *data_ptr; |
| struct ib_cq *cq; |
| struct ib_wc wc; |
| int ret; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext); |
| if (!cq) |
| return -EINVAL; |
| |
| /* we copy a struct ib_uverbs_poll_cq_resp to user space */ |
| header_ptr = (void __user *)(unsigned long) cmd.response; |
| data_ptr = header_ptr + sizeof resp; |
| |
| memset(&resp, 0, sizeof resp); |
| while (resp.count < cmd.ne) { |
| ret = ib_poll_cq(cq, 1, &wc); |
| if (ret < 0) |
| goto out_put; |
| if (!ret) |
| break; |
| |
| ret = copy_wc_to_user(data_ptr, &wc); |
| if (ret) |
| goto out_put; |
| |
| data_ptr += sizeof(struct ib_uverbs_wc); |
| ++resp.count; |
| } |
| |
| if (copy_to_user(header_ptr, &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto out_put; |
| } |
| |
| ret = in_len; |
| |
| out_put: |
| uobj_put_obj_read(cq); |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_req_notify_cq cmd; |
| struct ib_cq *cq; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext); |
| if (!cq) |
| return -EINVAL; |
| |
| ib_req_notify_cq(cq, cmd.solicited_only ? |
| IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); |
| |
| uobj_put_obj_read(cq); |
| |
| return in_len; |
| } |
| |
| ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_destroy_cq cmd; |
| struct ib_uverbs_destroy_cq_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_cq *cq; |
| struct ib_ucq_object *obj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| uobj = uobj_get_write(uobj_get_type(cq), cmd.cq_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| /* |
| * Make sure we don't free the memory in remove_commit as we still |
| * needs the uobject memory to create the response. |
| */ |
| uverbs_uobject_get(uobj); |
| cq = uobj->object; |
| obj = container_of(cq->uobject, struct ib_ucq_object, uobject); |
| |
| memset(&resp, 0, sizeof(resp)); |
| |
| ret = uobj_remove_commit(uobj); |
| if (ret) { |
| uverbs_uobject_put(uobj); |
| return ret; |
| } |
| |
| resp.comp_events_reported = obj->comp_events_reported; |
| resp.async_events_reported = obj->async_events_reported; |
| |
| uverbs_uobject_put(uobj); |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| return -EFAULT; |
| |
| return in_len; |
| } |
| |
| static int create_qp(struct ib_uverbs_file *file, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw, |
| struct ib_uverbs_ex_create_qp *cmd, |
| size_t cmd_sz, |
| int (*cb)(struct ib_uverbs_file *file, |
| struct ib_uverbs_ex_create_qp_resp *resp, |
| struct ib_udata *udata), |
| void *context) |
| { |
| struct ib_uqp_object *obj; |
| struct ib_device *device; |
| struct ib_pd *pd = NULL; |
| struct ib_xrcd *xrcd = NULL; |
| struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT); |
| struct ib_cq *scq = NULL, *rcq = NULL; |
| struct ib_srq *srq = NULL; |
| struct ib_qp *qp; |
| char *buf; |
| struct ib_qp_init_attr attr = {}; |
| struct ib_uverbs_ex_create_qp_resp resp; |
| int ret; |
| struct ib_rwq_ind_table *ind_tbl = NULL; |
| bool has_sq = true; |
| |
| if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) |
| return -EPERM; |
| |
| obj = (struct ib_uqp_object *)uobj_alloc(uobj_get_type(qp), |
| file->ucontext); |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| obj->uxrcd = NULL; |
| obj->uevent.uobject.user_handle = cmd->user_handle; |
| mutex_init(&obj->mcast_lock); |
| |
| if (cmd_sz >= offsetof(typeof(*cmd), rwq_ind_tbl_handle) + |
| sizeof(cmd->rwq_ind_tbl_handle) && |
| (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE)) { |
| ind_tbl = uobj_get_obj_read(rwq_ind_table, |
| cmd->rwq_ind_tbl_handle, |
| file->ucontext); |
| if (!ind_tbl) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| attr.rwq_ind_tbl = ind_tbl; |
| } |
| |
| if ((cmd_sz >= offsetof(typeof(*cmd), reserved1) + |
| sizeof(cmd->reserved1)) && cmd->reserved1) { |
| ret = -EOPNOTSUPP; |
| goto err_put; |
| } |
| |
| if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| if (ind_tbl && !cmd->max_send_wr) |
| has_sq = false; |
| |
| if (cmd->qp_type == IB_QPT_XRC_TGT) { |
| xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->pd_handle, |
| file->ucontext); |
| |
| if (IS_ERR(xrcd_uobj)) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| xrcd = (struct ib_xrcd *)xrcd_uobj->object; |
| if (!xrcd) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| device = xrcd->device; |
| } else { |
| if (cmd->qp_type == IB_QPT_XRC_INI) { |
| cmd->max_recv_wr = 0; |
| cmd->max_recv_sge = 0; |
| } else { |
| if (cmd->is_srq) { |
| srq = uobj_get_obj_read(srq, cmd->srq_handle, |
| file->ucontext); |
| if (!srq || srq->srq_type != IB_SRQT_BASIC) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| } |
| |
| if (!ind_tbl) { |
| if (cmd->recv_cq_handle != cmd->send_cq_handle) { |
| rcq = uobj_get_obj_read(cq, cmd->recv_cq_handle, |
| file->ucontext); |
| if (!rcq) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| } |
| } |
| } |
| |
| if (has_sq) |
| scq = uobj_get_obj_read(cq, cmd->send_cq_handle, |
| file->ucontext); |
| if (!ind_tbl) |
| rcq = rcq ?: scq; |
| pd = uobj_get_obj_read(pd, cmd->pd_handle, file->ucontext); |
| if (!pd || (!scq && has_sq)) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| device = pd->device; |
| } |
| |
| attr.event_handler = ib_uverbs_qp_event_handler; |
| attr.qp_context = file; |
| attr.send_cq = scq; |
| attr.recv_cq = rcq; |
| attr.srq = srq; |
| attr.xrcd = xrcd; |
| attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : |
| IB_SIGNAL_REQ_WR; |
| attr.qp_type = cmd->qp_type; |
| attr.create_flags = 0; |
| |
| attr.cap.max_send_wr = cmd->max_send_wr; |
| attr.cap.max_recv_wr = cmd->max_recv_wr; |
| attr.cap.max_send_sge = cmd->max_send_sge; |
| attr.cap.max_recv_sge = cmd->max_recv_sge; |
| attr.cap.max_inline_data = cmd->max_inline_data; |
| |
| obj->uevent.events_reported = 0; |
| INIT_LIST_HEAD(&obj->uevent.event_list); |
| INIT_LIST_HEAD(&obj->mcast_list); |
| |
| if (cmd_sz >= offsetof(typeof(*cmd), create_flags) + |
| sizeof(cmd->create_flags)) |
| attr.create_flags = cmd->create_flags; |
| |
| if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | |
| IB_QP_CREATE_CROSS_CHANNEL | |
| IB_QP_CREATE_MANAGED_SEND | |
| IB_QP_CREATE_MANAGED_RECV | |
| IB_QP_CREATE_SCATTER_FCS | |
| IB_QP_CREATE_CVLAN_STRIPPING)) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| buf = (void *)cmd + sizeof(*cmd); |
| if (cmd_sz > sizeof(*cmd)) |
| if (!(buf[0] == 0 && !memcmp(buf, buf + 1, |
| cmd_sz - sizeof(*cmd) - 1))) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| if (cmd->qp_type == IB_QPT_XRC_TGT) |
| qp = ib_create_qp(pd, &attr); |
| else |
| qp = device->create_qp(pd, &attr, uhw); |
| |
| if (IS_ERR(qp)) { |
| ret = PTR_ERR(qp); |
| goto err_put; |
| } |
| |
| if (cmd->qp_type != IB_QPT_XRC_TGT) { |
| ret = ib_create_qp_security(qp, device); |
| if (ret) |
| goto err_cb; |
| |
| qp->real_qp = qp; |
| qp->device = device; |
| qp->pd = pd; |
| qp->send_cq = attr.send_cq; |
| qp->recv_cq = attr.recv_cq; |
| qp->srq = attr.srq; |
| qp->rwq_ind_tbl = ind_tbl; |
| qp->event_handler = attr.event_handler; |
| qp->qp_context = attr.qp_context; |
| qp->qp_type = attr.qp_type; |
| atomic_set(&qp->usecnt, 0); |
| atomic_inc(&pd->usecnt); |
| qp->port = 0; |
| if (attr.send_cq) |
| atomic_inc(&attr.send_cq->usecnt); |
| if (attr.recv_cq) |
| atomic_inc(&attr.recv_cq->usecnt); |
| if (attr.srq) |
| atomic_inc(&attr.srq->usecnt); |
| if (ind_tbl) |
| atomic_inc(&ind_tbl->usecnt); |
| } |
| qp->uobject = &obj->uevent.uobject; |
| |
| obj->uevent.uobject.object = qp; |
| |
| memset(&resp, 0, sizeof resp); |
| resp.base.qpn = qp->qp_num; |
| resp.base.qp_handle = obj->uevent.uobject.id; |
| resp.base.max_recv_sge = attr.cap.max_recv_sge; |
| resp.base.max_send_sge = attr.cap.max_send_sge; |
| resp.base.max_recv_wr = attr.cap.max_recv_wr; |
| resp.base.max_send_wr = attr.cap.max_send_wr; |
| resp.base.max_inline_data = attr.cap.max_inline_data; |
| |
| resp.response_length = offsetof(typeof(resp), response_length) + |
| sizeof(resp.response_length); |
| |
| ret = cb(file, &resp, ucore); |
| if (ret) |
| goto err_cb; |
| |
| if (xrcd) { |
| obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, |
| uobject); |
| atomic_inc(&obj->uxrcd->refcnt); |
| uobj_put_read(xrcd_uobj); |
| } |
| |
| if (pd) |
| uobj_put_obj_read(pd); |
| if (scq) |
| uobj_put_obj_read(scq); |
| if (rcq && rcq != scq) |
| uobj_put_obj_read(rcq); |
| if (srq) |
| uobj_put_obj_read(srq); |
| if (ind_tbl) |
| uobj_put_obj_read(ind_tbl); |
| |
| uobj_alloc_commit(&obj->uevent.uobject); |
| |
| return 0; |
| err_cb: |
| ib_destroy_qp(qp); |
| |
| err_put: |
| if (!IS_ERR(xrcd_uobj)) |
| uobj_put_read(xrcd_uobj); |
| if (pd) |
| uobj_put_obj_read(pd); |
| if (scq) |
| uobj_put_obj_read(scq); |
| if (rcq && rcq != scq) |
| uobj_put_obj_read(rcq); |
| if (srq) |
| uobj_put_obj_read(srq); |
| if (ind_tbl) |
| uobj_put_obj_read(ind_tbl); |
| |
| uobj_alloc_abort(&obj->uevent.uobject); |
| return ret; |
| } |
| |
| static int ib_uverbs_create_qp_cb(struct ib_uverbs_file *file, |
| struct ib_uverbs_ex_create_qp_resp *resp, |
| struct ib_udata *ucore) |
| { |
| if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_create_qp cmd; |
| struct ib_uverbs_ex_create_qp cmd_ex; |
| struct ib_udata ucore; |
| struct ib_udata uhw; |
| ssize_t resp_size = sizeof(struct ib_uverbs_create_qp_resp); |
| int err; |
| |
| if (out_len < resp_size) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof(cmd))) |
| return -EFAULT; |
| |
| INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd), |
| resp_size); |
| INIT_UDATA(&uhw, buf + sizeof(cmd), |
| (unsigned long)cmd.response + resp_size, |
| in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), |
| out_len - resp_size); |
| |
| memset(&cmd_ex, 0, sizeof(cmd_ex)); |
| cmd_ex.user_handle = cmd.user_handle; |
| cmd_ex.pd_handle = cmd.pd_handle; |
| cmd_ex.send_cq_handle = cmd.send_cq_handle; |
| cmd_ex.recv_cq_handle = cmd.recv_cq_handle; |
| cmd_ex.srq_handle = cmd.srq_handle; |
| cmd_ex.max_send_wr = cmd.max_send_wr; |
| cmd_ex.max_recv_wr = cmd.max_recv_wr; |
| cmd_ex.max_send_sge = cmd.max_send_sge; |
| cmd_ex.max_recv_sge = cmd.max_recv_sge; |
| cmd_ex.max_inline_data = cmd.max_inline_data; |
| cmd_ex.sq_sig_all = cmd.sq_sig_all; |
| cmd_ex.qp_type = cmd.qp_type; |
| cmd_ex.is_srq = cmd.is_srq; |
| |
| err = create_qp(file, &ucore, &uhw, &cmd_ex, |
| offsetof(typeof(cmd_ex), is_srq) + |
| sizeof(cmd.is_srq), ib_uverbs_create_qp_cb, |
| NULL); |
| |
| if (err) |
| return err; |
| |
| return in_len; |
| } |
| |
| static int ib_uverbs_ex_create_qp_cb(struct ib_uverbs_file *file, |
| struct ib_uverbs_ex_create_qp_resp *resp, |
| struct ib_udata *ucore) |
| { |
| if (ib_copy_to_udata(ucore, resp, resp->response_length)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_ex_create_qp_resp resp; |
| struct ib_uverbs_ex_create_qp cmd = {0}; |
| int err; |
| |
| if (ucore->inlen < (offsetof(typeof(cmd), comp_mask) + |
| sizeof(cmd.comp_mask))) |
| return -EINVAL; |
| |
| err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); |
| if (err) |
| return err; |
| |
| if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) |
| return -EINVAL; |
| |
| if (cmd.reserved) |
| return -EINVAL; |
| |
| if (ucore->outlen < (offsetof(typeof(resp), response_length) + |
| sizeof(resp.response_length))) |
| return -ENOSPC; |
| |
| err = create_qp(file, ucore, uhw, &cmd, |
| min(ucore->inlen, sizeof(cmd)), |
| ib_uverbs_ex_create_qp_cb, NULL); |
| |
| if (err) |
| return err; |
| |
| return 0; |
| } |
| |
| ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, int out_len) |
| { |
| struct ib_uverbs_open_qp cmd; |
| struct ib_uverbs_create_qp_resp resp; |
| struct ib_udata udata; |
| struct ib_uqp_object *obj; |
| struct ib_xrcd *xrcd; |
| struct ib_uobject *uninitialized_var(xrcd_uobj); |
| struct ib_qp *qp; |
| struct ib_qp_open_attr attr; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd, out_len - sizeof resp); |
| |
| obj = (struct ib_uqp_object *)uobj_alloc(uobj_get_type(qp), |
| file->ucontext); |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| |
| xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd.pd_handle, |
| file->ucontext); |
| if (IS_ERR(xrcd_uobj)) { |
| ret = -EINVAL; |
| goto err_put; |
| } |
| |
| xrcd = (struct ib_xrcd *)xrcd_uobj->object; |
| if (!xrcd) { |
| ret = -EINVAL; |
| goto err_xrcd; |
| } |
| |
| attr.event_handler = ib_uverbs_qp_event_handler; |
| attr.qp_context = file; |
| attr.qp_num = cmd.qpn; |
| attr.qp_type = cmd.qp_type; |
| |
| obj->uevent.events_reported = 0; |
| INIT_LIST_HEAD(&obj->uevent.event_list); |
| INIT_LIST_HEAD(&obj->mcast_list); |
| |
| qp = ib_open_qp(xrcd, &attr); |
| if (IS_ERR(qp)) { |
| ret = PTR_ERR(qp); |
| goto err_xrcd; |
| } |
| |
| obj->uevent.uobject.object = qp; |
| obj->uevent.uobject.user_handle = cmd.user_handle; |
| |
| memset(&resp, 0, sizeof resp); |
| resp.qpn = qp->qp_num; |
| resp.qp_handle = obj->uevent.uobject.id; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_destroy; |
| } |
| |
| obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); |
| atomic_inc(&obj->uxrcd->refcnt); |
| qp->uobject = &obj->uevent.uobject; |
| uobj_put_read(xrcd_uobj); |
| |
| |
| uobj_alloc_commit(&obj->uevent.uobject); |
| |
| return in_len; |
| |
| err_destroy: |
| ib_destroy_qp(qp); |
| err_xrcd: |
| uobj_put_read(xrcd_uobj); |
| err_put: |
| uobj_alloc_abort(&obj->uevent.uobject); |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_query_qp cmd; |
| struct ib_uverbs_query_qp_resp resp; |
| struct ib_qp *qp; |
| struct ib_qp_attr *attr; |
| struct ib_qp_init_attr *init_attr; |
| const struct ib_global_route *grh; |
| int ret; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| attr = kmalloc(sizeof *attr, GFP_KERNEL); |
| init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); |
| if (!attr || !init_attr) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); |
| if (!qp) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); |
| |
| uobj_put_obj_read(qp); |
| |
| if (ret) |
| goto out; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| resp.qp_state = attr->qp_state; |
| resp.cur_qp_state = attr->cur_qp_state; |
| resp.path_mtu = attr->path_mtu; |
| resp.path_mig_state = attr->path_mig_state; |
| resp.qkey = attr->qkey; |
| resp.rq_psn = attr->rq_psn; |
| resp.sq_psn = attr->sq_psn; |
| resp.dest_qp_num = attr->dest_qp_num; |
| resp.qp_access_flags = attr->qp_access_flags; |
| resp.pkey_index = attr->pkey_index; |
| resp.alt_pkey_index = attr->alt_pkey_index; |
| resp.sq_draining = attr->sq_draining; |
| resp.max_rd_atomic = attr->max_rd_atomic; |
| resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; |
| resp.min_rnr_timer = attr->min_rnr_timer; |
| resp.port_num = attr->port_num; |
| resp.timeout = attr->timeout; |
| resp.retry_cnt = attr->retry_cnt; |
| resp.rnr_retry = attr->rnr_retry; |
| resp.alt_port_num = attr->alt_port_num; |
| resp.alt_timeout = attr->alt_timeout; |
| |
| resp.dest.dlid = rdma_ah_get_dlid(&attr->ah_attr); |
| resp.dest.sl = rdma_ah_get_sl(&attr->ah_attr); |
| resp.dest.src_path_bits = rdma_ah_get_path_bits(&attr->ah_attr); |
| resp.dest.static_rate = rdma_ah_get_static_rate(&attr->ah_attr); |
| resp.dest.is_global = !!(rdma_ah_get_ah_flags(&attr->ah_attr) & |
| IB_AH_GRH); |
| if (resp.dest.is_global) { |
| grh = rdma_ah_read_grh(&attr->ah_attr); |
| memcpy(resp.dest.dgid, grh->dgid.raw, 16); |
| resp.dest.flow_label = grh->flow_label; |
| resp.dest.sgid_index = grh->sgid_index; |
| resp.dest.hop_limit = grh->hop_limit; |
| resp.dest.traffic_class = grh->traffic_class; |
| } |
| resp.dest.port_num = rdma_ah_get_port_num(&attr->ah_attr); |
| |
| resp.alt_dest.dlid = rdma_ah_get_dlid(&attr->alt_ah_attr); |
| resp.alt_dest.sl = rdma_ah_get_sl(&attr->alt_ah_attr); |
| resp.alt_dest.src_path_bits = rdma_ah_get_path_bits(&attr->alt_ah_attr); |
| resp.alt_dest.static_rate |
| = rdma_ah_get_static_rate(&attr->alt_ah_attr); |
| resp.alt_dest.is_global |
| = !!(rdma_ah_get_ah_flags(&attr->alt_ah_attr) & |
| IB_AH_GRH); |
| if (resp.alt_dest.is_global) { |
| grh = rdma_ah_read_grh(&attr->alt_ah_attr); |
| memcpy(resp.alt_dest.dgid, grh->dgid.raw, 16); |
| resp.alt_dest.flow_label = grh->flow_label; |
| resp.alt_dest.sgid_index = grh->sgid_index; |
| resp.alt_dest.hop_limit = grh->hop_limit; |
| resp.alt_dest.traffic_class = grh->traffic_class; |
| } |
| resp.alt_dest.port_num = rdma_ah_get_port_num(&attr->alt_ah_attr); |
| |
| resp.max_send_wr = init_attr->cap.max_send_wr; |
| resp.max_recv_wr = init_attr->cap.max_recv_wr; |
| resp.max_send_sge = init_attr->cap.max_send_sge; |
| resp.max_recv_sge = init_attr->cap.max_recv_sge; |
| resp.max_inline_data = init_attr->cap.max_inline_data; |
| resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| kfree(attr); |
| kfree(init_attr); |
| |
| return ret ? ret : in_len; |
| } |
| |
| /* Remove ignored fields set in the attribute mask */ |
| static int modify_qp_mask(enum ib_qp_type qp_type, int mask) |
| { |
| switch (qp_type) { |
| case IB_QPT_XRC_INI: |
| return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); |
| case IB_QPT_XRC_TGT: |
| return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | |
| IB_QP_RNR_RETRY); |
| default: |
| return mask; |
| } |
| } |
| |
| static int modify_qp(struct ib_uverbs_file *file, |
| struct ib_uverbs_ex_modify_qp *cmd, struct ib_udata *udata) |
| { |
| struct ib_qp_attr *attr; |
| struct ib_qp *qp; |
| int ret; |
| |
| attr = kmalloc(sizeof *attr, GFP_KERNEL); |
| if (!attr) |
| return -ENOMEM; |
| |
| qp = uobj_get_obj_read(qp, cmd->base.qp_handle, file->ucontext); |
| if (!qp) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| if ((cmd->base.attr_mask & IB_QP_PORT) && |
| !rdma_is_port_valid(qp->device, cmd->base.port_num)) { |
| ret = -EINVAL; |
| goto release_qp; |
| } |
| |
| attr->qp_state = cmd->base.qp_state; |
| attr->cur_qp_state = cmd->base.cur_qp_state; |
| attr->path_mtu = cmd->base.path_mtu; |
| attr->path_mig_state = cmd->base.path_mig_state; |
| attr->qkey = cmd->base.qkey; |
| attr->rq_psn = cmd->base.rq_psn; |
| attr->sq_psn = cmd->base.sq_psn; |
| attr->dest_qp_num = cmd->base.dest_qp_num; |
| attr->qp_access_flags = cmd->base.qp_access_flags; |
| attr->pkey_index = cmd->base.pkey_index; |
| attr->alt_pkey_index = cmd->base.alt_pkey_index; |
| attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify; |
| attr->max_rd_atomic = cmd->base.max_rd_atomic; |
| attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic; |
| attr->min_rnr_timer = cmd->base.min_rnr_timer; |
| attr->port_num = cmd->base.port_num; |
| attr->timeout = cmd->base.timeout; |
| attr->retry_cnt = cmd->base.retry_cnt; |
| attr->rnr_retry = cmd->base.rnr_retry; |
| attr->alt_port_num = cmd->base.alt_port_num; |
| attr->alt_timeout = cmd->base.alt_timeout; |
| attr->rate_limit = cmd->rate_limit; |
| |
| if (cmd->base.attr_mask & IB_QP_AV) |
| attr->ah_attr.type = rdma_ah_find_type(qp->device, |
| cmd->base.dest.port_num); |
| if (cmd->base.dest.is_global) { |
| rdma_ah_set_grh(&attr->ah_attr, NULL, |
| cmd->base.dest.flow_label, |
| cmd->base.dest.sgid_index, |
| cmd->base.dest.hop_limit, |
| cmd->base.dest.traffic_class); |
| rdma_ah_set_dgid_raw(&attr->ah_attr, cmd->base.dest.dgid); |
| } else { |
| rdma_ah_set_ah_flags(&attr->ah_attr, 0); |
| } |
| rdma_ah_set_dlid(&attr->ah_attr, cmd->base.dest.dlid); |
| rdma_ah_set_sl(&attr->ah_attr, cmd->base.dest.sl); |
| rdma_ah_set_path_bits(&attr->ah_attr, cmd->base.dest.src_path_bits); |
| rdma_ah_set_static_rate(&attr->ah_attr, cmd->base.dest.static_rate); |
| rdma_ah_set_port_num(&attr->ah_attr, |
| cmd->base.dest.port_num); |
| |
| if (cmd->base.attr_mask & IB_QP_ALT_PATH) |
| attr->alt_ah_attr.type = |
| rdma_ah_find_type(qp->device, cmd->base.dest.port_num); |
| if (cmd->base.alt_dest.is_global) { |
| rdma_ah_set_grh(&attr->alt_ah_attr, NULL, |
| cmd->base.alt_dest.flow_label, |
| cmd->base.alt_dest.sgid_index, |
| cmd->base.alt_dest.hop_limit, |
| cmd->base.alt_dest.traffic_class); |
| rdma_ah_set_dgid_raw(&attr->alt_ah_attr, |
| cmd->base.alt_dest.dgid); |
| } else { |
| rdma_ah_set_ah_flags(&attr->alt_ah_attr, 0); |
| } |
| |
| rdma_ah_set_dlid(&attr->alt_ah_attr, cmd->base.alt_dest.dlid); |
| rdma_ah_set_sl(&attr->alt_ah_attr, cmd->base.alt_dest.sl); |
| rdma_ah_set_path_bits(&attr->alt_ah_attr, |
| cmd->base.alt_dest.src_path_bits); |
| rdma_ah_set_static_rate(&attr->alt_ah_attr, |
| cmd->base.alt_dest.static_rate); |
| rdma_ah_set_port_num(&attr->alt_ah_attr, |
| cmd->base.alt_dest.port_num); |
| |
| ret = ib_modify_qp_with_udata(qp, attr, |
| modify_qp_mask(qp->qp_type, |
| cmd->base.attr_mask), |
| udata); |
| |
| release_qp: |
| uobj_put_obj_read(qp); |
| out: |
| kfree(attr); |
| |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_ex_modify_qp cmd = {}; |
| struct ib_udata udata; |
| int ret; |
| |
| if (copy_from_user(&cmd.base, buf, sizeof(cmd.base))) |
| return -EFAULT; |
| |
| if (cmd.base.attr_mask & |
| ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1)) |
| return -EOPNOTSUPP; |
| |
| INIT_UDATA(&udata, buf + sizeof(cmd.base), NULL, |
| in_len - sizeof(cmd.base), out_len); |
| |
| ret = modify_qp(file, &cmd, &udata); |
| if (ret) |
| return ret; |
| |
| return in_len; |
| } |
| |
| int ib_uverbs_ex_modify_qp(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_ex_modify_qp cmd = {}; |
| int ret; |
| |
| /* |
| * Last bit is reserved for extending the attr_mask by |
| * using another field. |
| */ |
| BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31)); |
| |
| if (ucore->inlen < sizeof(cmd.base)) |
| return -EINVAL; |
| |
| ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); |
| if (ret) |
| return ret; |
| |
| if (cmd.base.attr_mask & |
| ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1)) |
| return -EOPNOTSUPP; |
| |
| if (ucore->inlen > sizeof(cmd)) { |
| if (ib_is_udata_cleared(ucore, sizeof(cmd), |
| ucore->inlen - sizeof(cmd))) |
| return -EOPNOTSUPP; |
| } |
| |
| ret = modify_qp(file, &cmd, uhw); |
| |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_destroy_qp cmd; |
| struct ib_uverbs_destroy_qp_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_uqp_object *obj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| uobj = uobj_get_write(uobj_get_type(qp), cmd.qp_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); |
| /* |
| * Make sure we don't free the memory in remove_commit as we still |
| * needs the uobject memory to create the response. |
| */ |
| uverbs_uobject_get(uobj); |
| |
| ret = uobj_remove_commit(uobj); |
| if (ret) { |
| uverbs_uobject_put(uobj); |
| return ret; |
| } |
| |
| resp.events_reported = obj->uevent.events_reported; |
| uverbs_uobject_put(uobj); |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| return -EFAULT; |
| |
| return in_len; |
| } |
| |
| static void *alloc_wr(size_t wr_size, __u32 num_sge) |
| { |
| if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) / |
| sizeof (struct ib_sge)) |
| return NULL; |
| |
| return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) + |
| num_sge * sizeof (struct ib_sge), GFP_KERNEL); |
| } |
| |
| ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_post_send cmd; |
| struct ib_uverbs_post_send_resp resp; |
| struct ib_uverbs_send_wr *user_wr; |
| struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; |
| struct ib_qp *qp; |
| int i, sg_ind; |
| int is_ud; |
| ssize_t ret = -EINVAL; |
| size_t next_size; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + |
| cmd.sge_count * sizeof (struct ib_uverbs_sge)) |
| return -EINVAL; |
| |
| if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) |
| return -EINVAL; |
| |
| user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); |
| if (!user_wr) |
| return -ENOMEM; |
| |
| qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); |
| if (!qp) |
| goto out; |
| |
| is_ud = qp->qp_type == IB_QPT_UD; |
| sg_ind = 0; |
| last = NULL; |
| for (i = 0; i < cmd.wr_count; ++i) { |
| if (copy_from_user(user_wr, |
| buf + sizeof cmd + i * cmd.wqe_size, |
| cmd.wqe_size)) { |
| ret = -EFAULT; |
| goto out_put; |
| } |
| |
| if (user_wr->num_sge + sg_ind > cmd.sge_count) { |
| ret = -EINVAL; |
| goto out_put; |
| } |
| |
| if (is_ud) { |
| struct ib_ud_wr *ud; |
| |
| if (user_wr->opcode != IB_WR_SEND && |
| user_wr->opcode != IB_WR_SEND_WITH_IMM) { |
| ret = -EINVAL; |
| goto out_put; |
| } |
| |
| next_size = sizeof(*ud); |
| ud = alloc_wr(next_size, user_wr->num_sge); |
| if (!ud) { |
| ret = -ENOMEM; |
| goto out_put; |
| } |
| |
| ud->ah = uobj_get_obj_read(ah, user_wr->wr.ud.ah, |
| file->ucontext); |
| if (!ud->ah) { |
| kfree(ud); |
| ret = -EINVAL; |
| goto out_put; |
| } |
| ud->remote_qpn = user_wr->wr.ud.remote_qpn; |
| ud->remote_qkey = user_wr->wr.ud.remote_qkey; |
| |
| next = &ud->wr; |
| } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || |
| user_wr->opcode == IB_WR_RDMA_WRITE || |
| user_wr->opcode == IB_WR_RDMA_READ) { |
| struct ib_rdma_wr *rdma; |
| |
| next_size = sizeof(*rdma); |
| rdma = alloc_wr(next_size, user_wr->num_sge); |
| if (!rdma) { |
| ret = -ENOMEM; |
| goto out_put; |
| } |
| |
| rdma->remote_addr = user_wr->wr.rdma.remote_addr; |
| rdma->rkey = user_wr->wr.rdma.rkey; |
| |
| next = &rdma->wr; |
| } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || |
| user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { |
| struct ib_atomic_wr *atomic; |
| |
| next_size = sizeof(*atomic); |
| atomic = alloc_wr(next_size, user_wr->num_sge); |
| if (!atomic) { |
| ret = -ENOMEM; |
| goto out_put; |
| } |
| |
| atomic->remote_addr = user_wr->wr.atomic.remote_addr; |
| atomic->compare_add = user_wr->wr.atomic.compare_add; |
| atomic->swap = user_wr->wr.atomic.swap; |
| atomic->rkey = user_wr->wr.atomic.rkey; |
| |
| next = &atomic->wr; |
| } else if (user_wr->opcode == IB_WR_SEND || |
| user_wr->opcode == IB_WR_SEND_WITH_IMM || |
| user_wr->opcode == IB_WR_SEND_WITH_INV) { |
| next_size = sizeof(*next); |
| next = alloc_wr(next_size, user_wr->num_sge); |
| if (!next) { |
| ret = -ENOMEM; |
| goto out_put; |
| } |
| } else { |
| ret = -EINVAL; |
| goto out_put; |
| } |
| |
| if (user_wr->opcode == IB_WR_SEND_WITH_IMM || |
| user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { |
| next->ex.imm_data = |
| (__be32 __force) user_wr->ex.imm_data; |
| } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { |
| next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; |
| } |
| |
| if (!last) |
| wr = next; |
| else |
| last->next = next; |
| last = next; |
| |
| next->next = NULL; |
| next->wr_id = user_wr->wr_id; |
| next->num_sge = user_wr->num_sge; |
| next->opcode = user_wr->opcode; |
| next->send_flags = user_wr->send_flags; |
| |
| if (next->num_sge) { |
| next->sg_list = (void *) next + |
| ALIGN(next_size, sizeof(struct ib_sge)); |
| if (copy_from_user(next->sg_list, |
| buf + sizeof cmd + |
| cmd.wr_count * cmd.wqe_size + |
| sg_ind * sizeof (struct ib_sge), |
| next->num_sge * sizeof (struct ib_sge))) { |
| ret = -EFAULT; |
| goto out_put; |
| } |
| sg_ind += next->num_sge; |
| } else |
| next->sg_list = NULL; |
| } |
| |
| resp.bad_wr = 0; |
| ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); |
| if (ret) |
| for (next = wr; next; next = next->next) { |
| ++resp.bad_wr; |
| if (next == bad_wr) |
| break; |
| } |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out_put: |
| uobj_put_obj_read(qp); |
| |
| while (wr) { |
| if (is_ud && ud_wr(wr)->ah) |
| uobj_put_obj_read(ud_wr(wr)->ah); |
| next = wr->next; |
| kfree(wr); |
| wr = next; |
| } |
| |
| out: |
| kfree(user_wr); |
| |
| return ret ? ret : in_len; |
| } |
| |
| static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, |
| int in_len, |
| u32 wr_count, |
| u32 sge_count, |
| u32 wqe_size) |
| { |
| struct ib_uverbs_recv_wr *user_wr; |
| struct ib_recv_wr *wr = NULL, *last, *next; |
| int sg_ind; |
| int i; |
| int ret; |
| |
| if (in_len < wqe_size * wr_count + |
| sge_count * sizeof (struct ib_uverbs_sge)) |
| return ERR_PTR(-EINVAL); |
| |
| if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) |
| return ERR_PTR(-EINVAL); |
| |
| user_wr = kmalloc(wqe_size, GFP_KERNEL); |
| if (!user_wr) |
| return ERR_PTR(-ENOMEM); |
| |
| sg_ind = 0; |
| last = NULL; |
| for (i = 0; i < wr_count; ++i) { |
| if (copy_from_user(user_wr, buf + i * wqe_size, |
| wqe_size)) { |
| ret = -EFAULT; |
| goto err; |
| } |
| |
| if (user_wr->num_sge + sg_ind > sge_count) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| if (user_wr->num_sge >= |
| (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) / |
| sizeof (struct ib_sge)) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + |
| user_wr->num_sge * sizeof (struct ib_sge), |
| GFP_KERNEL); |
| if (!next) { |
| ret = -ENOMEM; |
| goto err; |
| } |
| |
| if (!last) |
| wr = next; |
| else |
| last->next = next; |
| last = next; |
| |
| next->next = NULL; |
| next->wr_id = user_wr->wr_id; |
| next->num_sge = user_wr->num_sge; |
| |
| if (next->num_sge) { |
| next->sg_list = (void *) next + |
| ALIGN(sizeof *next, sizeof (struct ib_sge)); |
| if (copy_from_user(next->sg_list, |
| buf + wr_count * wqe_size + |
| sg_ind * sizeof (struct ib_sge), |
| next->num_sge * sizeof (struct ib_sge))) { |
| ret = -EFAULT; |
| goto err; |
| } |
| sg_ind += next->num_sge; |
| } else |
| next->sg_list = NULL; |
| } |
| |
| kfree(user_wr); |
| return wr; |
| |
| err: |
| kfree(user_wr); |
| |
| while (wr) { |
| next = wr->next; |
| kfree(wr); |
| wr = next; |
| } |
| |
| return ERR_PTR(ret); |
| } |
| |
| ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_post_recv cmd; |
| struct ib_uverbs_post_recv_resp resp; |
| struct ib_recv_wr *wr, *next, *bad_wr; |
| struct ib_qp *qp; |
| ssize_t ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, |
| in_len - sizeof cmd, cmd.wr_count, |
| cmd.sge_count, cmd.wqe_size); |
| if (IS_ERR(wr)) |
| return PTR_ERR(wr); |
| |
| qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); |
| if (!qp) |
| goto out; |
| |
| resp.bad_wr = 0; |
| ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); |
| |
| uobj_put_obj_read(qp); |
| if (ret) { |
| for (next = wr; next; next = next->next) { |
| ++resp.bad_wr; |
| if (next == bad_wr) |
| break; |
| } |
| } |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| while (wr) { |
| next = wr->next; |
| kfree(wr); |
| wr = next; |
| } |
| |
| return ret ? ret : in_len; |
| } |
| |
| ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_post_srq_recv cmd; |
| struct ib_uverbs_post_srq_recv_resp resp; |
| struct ib_recv_wr *wr, *next, *bad_wr; |
| struct ib_srq *srq; |
| ssize_t ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, |
| in_len - sizeof cmd, cmd.wr_count, |
| cmd.sge_count, cmd.wqe_size); |
| if (IS_ERR(wr)) |
| return PTR_ERR(wr); |
| |
| srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext); |
| if (!srq) |
| goto out; |
| |
| resp.bad_wr = 0; |
| ret = srq->device->post_srq_recv(srq, wr, &bad_wr); |
| |
| uobj_put_obj_read(srq); |
| |
| if (ret) |
| for (next = wr; next; next = next->next) { |
| ++resp.bad_wr; |
| if (next == bad_wr) |
| break; |
| } |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| ret = -EFAULT; |
| |
| out: |
| while (wr) { |
| next = wr->next; |
| kfree(wr); |
| wr = next; |
| } |
| |
| return ret ? ret : in_len; |
| } |
| |
| ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_create_ah cmd; |
| struct ib_uverbs_create_ah_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_pd *pd; |
| struct ib_ah *ah; |
| struct rdma_ah_attr attr; |
| int ret; |
| struct ib_udata udata; |
| u8 *dmac; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) |
| return -EINVAL; |
| |
| INIT_UDATA(&udata, buf + sizeof(cmd), |
| (unsigned long)cmd.response + sizeof(resp), |
| in_len - sizeof(cmd), out_len - sizeof(resp)); |
| |
| uobj = uobj_alloc(uobj_get_type(ah), file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext); |
| if (!pd) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num); |
| rdma_ah_set_dlid(&attr, cmd.attr.dlid); |
| rdma_ah_set_sl(&attr, cmd.attr.sl); |
| rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits); |
| rdma_ah_set_static_rate(&attr, cmd.attr.static_rate); |
| rdma_ah_set_port_num(&attr, cmd.attr.port_num); |
| |
| if (cmd.attr.is_global) { |
| rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label, |
| cmd.attr.grh.sgid_index, |
| cmd.attr.grh.hop_limit, |
| cmd.attr.grh.traffic_class); |
| rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid); |
| } else { |
| rdma_ah_set_ah_flags(&attr, 0); |
| } |
| dmac = rdma_ah_retrieve_dmac(&attr); |
| if (dmac) |
| memset(dmac, 0, ETH_ALEN); |
| |
| ah = pd->device->create_ah(pd, &attr, &udata); |
| |
| if (IS_ERR(ah)) { |
| ret = PTR_ERR(ah); |
| goto err_put; |
| } |
| |
| ah->device = pd->device; |
| ah->pd = pd; |
| atomic_inc(&pd->usecnt); |
| ah->uobject = uobj; |
| uobj->user_handle = cmd.user_handle; |
| uobj->object = ah; |
| |
| resp.ah_handle = uobj->id; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_copy; |
| } |
| |
| uobj_put_obj_read(pd); |
| uobj_alloc_commit(uobj); |
| |
| return in_len; |
| |
| err_copy: |
| rdma_destroy_ah(ah); |
| |
| err_put: |
| uobj_put_obj_read(pd); |
| |
| err: |
| uobj_alloc_abort(uobj); |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, int out_len) |
| { |
| struct ib_uverbs_destroy_ah cmd; |
| struct ib_uobject *uobj; |
| int ret; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| uobj = uobj_get_write(uobj_get_type(ah), cmd.ah_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| ret = uobj_remove_commit(uobj); |
| return ret ?: in_len; |
| } |
| |
| ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_attach_mcast cmd; |
| struct ib_qp *qp; |
| struct ib_uqp_object *obj; |
| struct ib_uverbs_mcast_entry *mcast; |
| int ret; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); |
| if (!qp) |
| return -EINVAL; |
| |
| obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
| |
| mutex_lock(&obj->mcast_lock); |
| list_for_each_entry(mcast, &obj->mcast_list, list) |
| if (cmd.mlid == mcast->lid && |
| !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { |
| ret = 0; |
| goto out_put; |
| } |
| |
| mcast = kmalloc(sizeof *mcast, GFP_KERNEL); |
| if (!mcast) { |
| ret = -ENOMEM; |
| goto out_put; |
| } |
| |
| mcast->lid = cmd.mlid; |
| memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); |
| |
| ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
| if (!ret) |
| list_add_tail(&mcast->list, &obj->mcast_list); |
| else |
| kfree(mcast); |
| |
| out_put: |
| mutex_unlock(&obj->mcast_lock); |
| uobj_put_obj_read(qp); |
| |
| return ret ? ret : in_len; |
| } |
| |
| ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_detach_mcast cmd; |
| struct ib_uqp_object *obj; |
| struct ib_qp *qp; |
| struct ib_uverbs_mcast_entry *mcast; |
| int ret = -EINVAL; |
| bool found = false; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); |
| if (!qp) |
| return -EINVAL; |
| |
| obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
| mutex_lock(&obj->mcast_lock); |
| |
| list_for_each_entry(mcast, &obj->mcast_list, list) |
| if (cmd.mlid == mcast->lid && |
| !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { |
| list_del(&mcast->list); |
| kfree(mcast); |
| found = true; |
| break; |
| } |
| |
| if (!found) { |
| ret = -EINVAL; |
| goto out_put; |
| } |
| |
| ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid); |
| |
| out_put: |
| mutex_unlock(&obj->mcast_lock); |
| uobj_put_obj_read(qp); |
| return ret ? ret : in_len; |
| } |
| |
| static int kern_spec_to_ib_spec_action(struct ib_uverbs_flow_spec *kern_spec, |
| union ib_flow_spec *ib_spec) |
| { |
| ib_spec->type = kern_spec->type; |
| switch (ib_spec->type) { |
| case IB_FLOW_SPEC_ACTION_TAG: |
| if (kern_spec->flow_tag.size != |
| sizeof(struct ib_uverbs_flow_spec_action_tag)) |
| return -EINVAL; |
| |
| ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag); |
| ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id; |
| break; |
| case IB_FLOW_SPEC_ACTION_DROP: |
| if (kern_spec->drop.size != |
| sizeof(struct ib_uverbs_flow_spec_action_drop)) |
| return -EINVAL; |
| |
| ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop); |
| break; |
| default: |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static size_t kern_spec_filter_sz(struct ib_uverbs_flow_spec_hdr *spec) |
| { |
| /* Returns user space filter size, includes padding */ |
| return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2; |
| } |
| |
| static ssize_t spec_filter_size(void *kern_spec_filter, u16 kern_filter_size, |
| u16 ib_real_filter_sz) |
| { |
| /* |
| * User space filter structures must be 64 bit aligned, otherwise this |
| * may pass, but we won't handle additional new attributes. |
| */ |
| |
| if (kern_filter_size > ib_real_filter_sz) { |
| if (memchr_inv(kern_spec_filter + |
| ib_real_filter_sz, 0, |
| kern_filter_size - ib_real_filter_sz)) |
| return -EINVAL; |
| return ib_real_filter_sz; |
| } |
| return kern_filter_size; |
| } |
| |
| static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec, |
| union ib_flow_spec *ib_spec) |
| { |
| ssize_t actual_filter_sz; |
| ssize_t kern_filter_sz; |
| ssize_t ib_filter_sz; |
| void *kern_spec_mask; |
| void *kern_spec_val; |
| |
| if (kern_spec->reserved) |
| return -EINVAL; |
| |
| ib_spec->type = kern_spec->type; |
| |
| kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr); |
| /* User flow spec size must be aligned to 4 bytes */ |
| if (kern_filter_sz != ALIGN(kern_filter_sz, 4)) |
| return -EINVAL; |
| |
| kern_spec_val = (void *)kern_spec + |
| sizeof(struct ib_uverbs_flow_spec_hdr); |
| kern_spec_mask = kern_spec_val + kern_filter_sz; |
| if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL)) |
| return -EINVAL; |
| |
| switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) { |
| case IB_FLOW_SPEC_ETH: |
| ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->size = sizeof(struct ib_flow_spec_eth); |
| memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz); |
| break; |
| case IB_FLOW_SPEC_IPV4: |
| ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->size = sizeof(struct ib_flow_spec_ipv4); |
| memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz); |
| break; |
| case IB_FLOW_SPEC_IPV6: |
| ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->size = sizeof(struct ib_flow_spec_ipv6); |
| memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz); |
| |
| if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) || |
| (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20)) |
| return -EINVAL; |
| break; |
| case IB_FLOW_SPEC_TCP: |
| case IB_FLOW_SPEC_UDP: |
| ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp); |
| memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz); |
| break; |
| case IB_FLOW_SPEC_VXLAN_TUNNEL: |
| ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz); |
| actual_filter_sz = spec_filter_size(kern_spec_mask, |
| kern_filter_sz, |
| ib_filter_sz); |
| if (actual_filter_sz <= 0) |
| return -EINVAL; |
| ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel); |
| memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz); |
| memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz); |
| |
| if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) || |
| (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24)) |
| return -EINVAL; |
| break; |
| default: |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec, |
| union ib_flow_spec *ib_spec) |
| { |
| if (kern_spec->reserved) |
| return -EINVAL; |
| |
| if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG) |
| return kern_spec_to_ib_spec_action(kern_spec, ib_spec); |
| else |
| return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); |
| } |
| |
| int ib_uverbs_ex_create_wq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_ex_create_wq cmd = {}; |
| struct ib_uverbs_ex_create_wq_resp resp = {}; |
| struct ib_uwq_object *obj; |
| int err = 0; |
| struct ib_cq *cq; |
| struct ib_pd *pd; |
| struct ib_wq *wq; |
| struct ib_wq_init_attr wq_init_attr = {}; |
| size_t required_cmd_sz; |
| size_t required_resp_len; |
| |
| required_cmd_sz = offsetof(typeof(cmd), max_sge) + sizeof(cmd.max_sge); |
| required_resp_len = offsetof(typeof(resp), wqn) + sizeof(resp.wqn); |
| |
| if (ucore->inlen < required_cmd_sz) |
| return -EINVAL; |
| |
| if (ucore->outlen < required_resp_len) |
| return -ENOSPC; |
| |
| if (ucore->inlen > sizeof(cmd) && |
| !ib_is_udata_cleared(ucore, sizeof(cmd), |
| ucore->inlen - sizeof(cmd))) |
| return -EOPNOTSUPP; |
| |
| err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); |
| if (err) |
| return err; |
| |
| if (cmd.comp_mask) |
| return -EOPNOTSUPP; |
| |
| obj = (struct ib_uwq_object *)uobj_alloc(uobj_get_type(wq), |
| file->ucontext); |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| |
| pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext); |
| if (!pd) { |
| err = -EINVAL; |
| goto err_uobj; |
| } |
| |
| cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext); |
| if (!cq) { |
| err = -EINVAL; |
| goto err_put_pd; |
| } |
| |
| wq_init_attr.cq = cq; |
| wq_init_attr.max_sge = cmd.max_sge; |
| wq_init_attr.max_wr = cmd.max_wr; |
| wq_init_attr.wq_context = file; |
| wq_init_attr.wq_type = cmd.wq_type; |
| wq_init_attr.event_handler = ib_uverbs_wq_event_handler; |
| if (ucore->inlen >= (offsetof(typeof(cmd), create_flags) + |
| sizeof(cmd.create_flags))) |
| wq_init_attr.create_flags = cmd.create_flags; |
| obj->uevent.events_reported = 0; |
| INIT_LIST_HEAD(&obj->uevent.event_list); |
| wq = pd->device->create_wq(pd, &wq_init_attr, uhw); |
| if (IS_ERR(wq)) { |
| err = PTR_ERR(wq); |
| goto err_put_cq; |
| } |
| |
| wq->uobject = &obj->uevent.uobject; |
| obj->uevent.uobject.object = wq; |
| wq->wq_type = wq_init_attr.wq_type; |
| wq->cq = cq; |
| wq->pd = pd; |
| wq->device = pd->device; |
| wq->wq_context = wq_init_attr.wq_context; |
| atomic_set(&wq->usecnt, 0); |
| atomic_inc(&pd->usecnt); |
| atomic_inc(&cq->usecnt); |
| wq->uobject = &obj->uevent.uobject; |
| obj->uevent.uobject.object = wq; |
| |
| memset(&resp, 0, sizeof(resp)); |
| resp.wq_handle = obj->uevent.uobject.id; |
| resp.max_sge = wq_init_attr.max_sge; |
| resp.max_wr = wq_init_attr.max_wr; |
| resp.wqn = wq->wq_num; |
| resp.response_length = required_resp_len; |
| err = ib_copy_to_udata(ucore, |
| &resp, resp.response_length); |
| if (err) |
| goto err_copy; |
| |
| uobj_put_obj_read(pd); |
| uobj_put_obj_read(cq); |
| uobj_alloc_commit(&obj->uevent.uobject); |
| return 0; |
| |
| err_copy: |
| ib_destroy_wq(wq); |
| err_put_cq: |
| uobj_put_obj_read(cq); |
| err_put_pd: |
| uobj_put_obj_read(pd); |
| err_uobj: |
| uobj_alloc_abort(&obj->uevent.uobject); |
| |
| return err; |
| } |
| |
| int ib_uverbs_ex_destroy_wq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_ex_destroy_wq cmd = {}; |
| struct ib_uverbs_ex_destroy_wq_resp resp = {}; |
| struct ib_uobject *uobj; |
| struct ib_uwq_object *obj; |
| size_t required_cmd_sz; |
| size_t required_resp_len; |
| int ret; |
| |
| required_cmd_sz = offsetof(typeof(cmd), wq_handle) + sizeof(cmd.wq_handle); |
| required_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved); |
| |
| if (ucore->inlen < required_cmd_sz) |
| return -EINVAL; |
| |
| if (ucore->outlen < required_resp_len) |
| return -ENOSPC; |
| |
| if (ucore->inlen > sizeof(cmd) && |
| !ib_is_udata_cleared(ucore, sizeof(cmd), |
| ucore->inlen - sizeof(cmd))) |
| return -EOPNOTSUPP; |
| |
| ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); |
| if (ret) |
| return ret; |
| |
| if (cmd.comp_mask) |
| return -EOPNOTSUPP; |
| |
| resp.response_length = required_resp_len; |
| uobj = uobj_get_write(uobj_get_type(wq), cmd.wq_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| obj = container_of(uobj, struct ib_uwq_object, uevent.uobject); |
| /* |
| * Make sure we don't free the memory in remove_commit as we still |
| * needs the uobject memory to create the response. |
| */ |
| uverbs_uobject_get(uobj); |
| |
| ret = uobj_remove_commit(uobj); |
| resp.events_reported = obj->uevent.events_reported; |
| uverbs_uobject_put(uobj); |
| if (ret) |
| return ret; |
| |
| return ib_copy_to_udata(ucore, &resp, resp.response_length); |
| } |
| |
| int ib_uverbs_ex_modify_wq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_ex_modify_wq cmd = {}; |
| struct ib_wq *wq; |
| struct ib_wq_attr wq_attr = {}; |
| size_t required_cmd_sz; |
| int ret; |
| |
| required_cmd_sz = offsetof(typeof(cmd), curr_wq_state) + sizeof(cmd.curr_wq_state); |
| if (ucore->inlen < required_cmd_sz) |
| return -EINVAL; |
| |
| if (ucore->inlen > sizeof(cmd) && |
| !ib_is_udata_cleared(ucore, sizeof(cmd), |
| ucore->inlen - sizeof(cmd))) |
| return -EOPNOTSUPP; |
| |
| ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); |
| if (ret) |
| return ret; |
| |
| if (!cmd.attr_mask) |
| return -EINVAL; |
| |
| if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS)) |
| return -EINVAL; |
| |
| wq = uobj_get_obj_read(wq, cmd.wq_handle, file->ucontext); |
| if (!wq) |
| return -EINVAL; |
| |
| wq_attr.curr_wq_state = cmd.curr_wq_state; |
| wq_attr.wq_state = cmd.wq_state; |
| if (cmd.attr_mask & IB_WQ_FLAGS) { |
| wq_attr.flags = cmd.flags; |
| wq_attr.flags_mask = cmd.flags_mask; |
| } |
| ret = wq->device->modify_wq(wq, &wq_attr, cmd.attr_mask, uhw); |
| uobj_put_obj_read(wq); |
| return ret; |
| } |
| |
| int ib_uverbs_ex_create_rwq_ind_table(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_ex_create_rwq_ind_table cmd = {}; |
| struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {}; |
| struct ib_uobject *uobj; |
| int err = 0; |
| struct ib_rwq_ind_table_init_attr init_attr = {}; |
| struct ib_rwq_ind_table *rwq_ind_tbl; |
| struct ib_wq **wqs = NULL; |
| u32 *wqs_handles = NULL; |
| struct ib_wq *wq = NULL; |
| int i, j, num_read_wqs; |
| u32 num_wq_handles; |
| u32 expected_in_size; |
| size_t required_cmd_sz_header; |
| size_t required_resp_len; |
| |
| required_cmd_sz_header = offsetof(typeof(cmd), log_ind_tbl_size) + sizeof(cmd.log_ind_tbl_size); |
| required_resp_len = offsetof(typeof(resp), ind_tbl_num) + sizeof(resp.ind_tbl_num); |
| |
| if (ucore->inlen < required_cmd_sz_header) |
| return -EINVAL; |
| |
| if (ucore->outlen < required_resp_len) |
| return -ENOSPC; |
| |
| err = ib_copy_from_udata(&cmd, ucore, required_cmd_sz_header); |
| if (err) |
| return err; |
| |
| ucore->inbuf += required_cmd_sz_header; |
| ucore->inlen -= required_cmd_sz_header; |
| |
| if (cmd.comp_mask) |
| return -EOPNOTSUPP; |
| |
| if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE) |
| return -EINVAL; |
| |
| num_wq_handles = 1 << cmd.log_ind_tbl_size; |
| expected_in_size = num_wq_handles * sizeof(__u32); |
| if (num_wq_handles == 1) |
| /* input size for wq handles is u64 aligned */ |
| expected_in_size += sizeof(__u32); |
| |
| if (ucore->inlen < expected_in_size) |
| return -EINVAL; |
| |
| if (ucore->inlen > expected_in_size && |
| !ib_is_udata_cleared(ucore, expected_in_size, |
| ucore->inlen - expected_in_size)) |
| return -EOPNOTSUPP; |
| |
| wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles), |
| GFP_KERNEL); |
| if (!wqs_handles) |
| return -ENOMEM; |
| |
| err = ib_copy_from_udata(wqs_handles, ucore, |
| num_wq_handles * sizeof(__u32)); |
| if (err) |
| goto err_free; |
| |
| wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL); |
| if (!wqs) { |
| err = -ENOMEM; |
| goto err_free; |
| } |
| |
| for (num_read_wqs = 0; num_read_wqs < num_wq_handles; |
| num_read_wqs++) { |
| wq = uobj_get_obj_read(wq, wqs_handles[num_read_wqs], |
| file->ucontext); |
| if (!wq) { |
| err = -EINVAL; |
| goto put_wqs; |
| } |
| |
| wqs[num_read_wqs] = wq; |
| } |
| |
| uobj = uobj_alloc(uobj_get_type(rwq_ind_table), file->ucontext); |
| if (IS_ERR(uobj)) { |
| err = PTR_ERR(uobj); |
| goto put_wqs; |
| } |
| |
| init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size; |
| init_attr.ind_tbl = wqs; |
| rwq_ind_tbl = ib_dev->create_rwq_ind_table(ib_dev, &init_attr, uhw); |
| |
| if (IS_ERR(rwq_ind_tbl)) { |
| err = PTR_ERR(rwq_ind_tbl); |
| goto err_uobj; |
| } |
| |
| rwq_ind_tbl->ind_tbl = wqs; |
| rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size; |
| rwq_ind_tbl->uobject = uobj; |
| uobj->object = rwq_ind_tbl; |
| rwq_ind_tbl->device = ib_dev; |
| atomic_set(&rwq_ind_tbl->usecnt, 0); |
| |
| for (i = 0; i < num_wq_handles; i++) |
| atomic_inc(&wqs[i]->usecnt); |
| |
| resp.ind_tbl_handle = uobj->id; |
| resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num; |
| resp.response_length = required_resp_len; |
| |
| err = ib_copy_to_udata(ucore, |
| &resp, resp.response_length); |
| if (err) |
| goto err_copy; |
| |
| kfree(wqs_handles); |
| |
| for (j = 0; j < num_read_wqs; j++) |
| uobj_put_obj_read(wqs[j]); |
| |
| uobj_alloc_commit(uobj); |
| return 0; |
| |
| err_copy: |
| ib_destroy_rwq_ind_table(rwq_ind_tbl); |
| err_uobj: |
| uobj_alloc_abort(uobj); |
| put_wqs: |
| for (j = 0; j < num_read_wqs; j++) |
| uobj_put_obj_read(wqs[j]); |
| err_free: |
| kfree(wqs_handles); |
| kfree(wqs); |
| return err; |
| } |
| |
| int ib_uverbs_ex_destroy_rwq_ind_table(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_ex_destroy_rwq_ind_table cmd = {}; |
| struct ib_uobject *uobj; |
| int ret; |
| size_t required_cmd_sz; |
| |
| required_cmd_sz = offsetof(typeof(cmd), ind_tbl_handle) + sizeof(cmd.ind_tbl_handle); |
| |
| if (ucore->inlen < required_cmd_sz) |
| return -EINVAL; |
| |
| if (ucore->inlen > sizeof(cmd) && |
| !ib_is_udata_cleared(ucore, sizeof(cmd), |
| ucore->inlen - sizeof(cmd))) |
| return -EOPNOTSUPP; |
| |
| ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); |
| if (ret) |
| return ret; |
| |
| if (cmd.comp_mask) |
| return -EOPNOTSUPP; |
| |
| uobj = uobj_get_write(uobj_get_type(rwq_ind_table), cmd.ind_tbl_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| return uobj_remove_commit(uobj); |
| } |
| |
| int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_create_flow cmd; |
| struct ib_uverbs_create_flow_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_flow *flow_id; |
| struct ib_uverbs_flow_attr *kern_flow_attr; |
| struct ib_flow_attr *flow_attr; |
| struct ib_qp *qp; |
| int err = 0; |
| void *kern_spec; |
| void *ib_spec; |
| int i; |
| |
| if (ucore->inlen < sizeof(cmd)) |
| return -EINVAL; |
| |
| if (ucore->outlen < sizeof(resp)) |
| return -ENOSPC; |
| |
| err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
| if (err) |
| return err; |
| |
| ucore->inbuf += sizeof(cmd); |
| ucore->inlen -= sizeof(cmd); |
| |
| if (cmd.comp_mask) |
| return -EINVAL; |
| |
| if (!capable(CAP_NET_RAW)) |
| return -EPERM; |
| |
| if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED) |
| return -EINVAL; |
| |
| if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && |
| ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) || |
| (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT))) |
| return -EINVAL; |
| |
| if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) |
| return -EINVAL; |
| |
| if (cmd.flow_attr.size > ucore->inlen || |
| cmd.flow_attr.size > |
| (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) |
| return -EINVAL; |
| |
| if (cmd.flow_attr.reserved[0] || |
| cmd.flow_attr.reserved[1]) |
| return -EINVAL; |
| |
| if (cmd.flow_attr.num_of_specs) { |
| kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, |
| GFP_KERNEL); |
| if (!kern_flow_attr) |
| return -ENOMEM; |
| |
| memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr)); |
| err = ib_copy_from_udata(kern_flow_attr + 1, ucore, |
| cmd.flow_attr.size); |
| if (err) |
| goto err_free_attr; |
| } else { |
| kern_flow_attr = &cmd.flow_attr; |
| } |
| |
| uobj = uobj_alloc(uobj_get_type(flow), file->ucontext); |
| if (IS_ERR(uobj)) { |
| err = PTR_ERR(uobj); |
| goto err_free_attr; |
| } |
| |
| qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext); |
| if (!qp) { |
| err = -EINVAL; |
| goto err_uobj; |
| } |
| |
| flow_attr = kzalloc(sizeof(*flow_attr) + cmd.flow_attr.num_of_specs * |
| sizeof(union ib_flow_spec), GFP_KERNEL); |
| if (!flow_attr) { |
| err = -ENOMEM; |
| goto err_put; |
| } |
| |
| flow_attr->type = kern_flow_attr->type; |
| flow_attr->priority = kern_flow_attr->priority; |
| flow_attr->num_of_specs = kern_flow_attr->num_of_specs; |
| flow_attr->port = kern_flow_attr->port; |
| flow_attr->flags = kern_flow_attr->flags; |
| flow_attr->size = sizeof(*flow_attr); |
| |
| kern_spec = kern_flow_attr + 1; |
| ib_spec = flow_attr + 1; |
| for (i = 0; i < flow_attr->num_of_specs && |
| cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) && |
| cmd.flow_attr.size >= |
| ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) { |
| err = kern_spec_to_ib_spec(kern_spec, ib_spec); |
| if (err) |
| goto err_free; |
| flow_attr->size += |
| ((union ib_flow_spec *) ib_spec)->size; |
| cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size; |
| kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size; |
| ib_spec += ((union ib_flow_spec *) ib_spec)->size; |
| } |
| if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { |
| pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", |
| i, cmd.flow_attr.size); |
| err = -EINVAL; |
| goto err_free; |
| } |
| flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER); |
| if (IS_ERR(flow_id)) { |
| err = PTR_ERR(flow_id); |
| goto err_free; |
| } |
| flow_id->uobject = uobj; |
| uobj->object = flow_id; |
| |
| memset(&resp, 0, sizeof(resp)); |
| resp.flow_handle = uobj->id; |
| |
| err = ib_copy_to_udata(ucore, |
| &resp, sizeof(resp)); |
| if (err) |
| goto err_copy; |
| |
| uobj_put_obj_read(qp); |
| uobj_alloc_commit(uobj); |
| kfree(flow_attr); |
| if (cmd.flow_attr.num_of_specs) |
| kfree(kern_flow_attr); |
| return 0; |
| err_copy: |
| ib_destroy_flow(flow_id); |
| err_free: |
| kfree(flow_attr); |
| err_put: |
| uobj_put_obj_read(qp); |
| err_uobj: |
| uobj_alloc_abort(uobj); |
| err_free_attr: |
| if (cmd.flow_attr.num_of_specs) |
| kfree(kern_flow_attr); |
| return err; |
| } |
| |
| int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_destroy_flow cmd; |
| struct ib_uobject *uobj; |
| int ret; |
| |
| if (ucore->inlen < sizeof(cmd)) |
| return -EINVAL; |
| |
| ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
| if (ret) |
| return ret; |
| |
| if (cmd.comp_mask) |
| return -EINVAL; |
| |
| uobj = uobj_get_write(uobj_get_type(flow), cmd.flow_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| ret = uobj_remove_commit(uobj); |
| return ret; |
| } |
| |
| static int __uverbs_create_xsrq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_uverbs_create_xsrq *cmd, |
| struct ib_udata *udata) |
| { |
| struct ib_uverbs_create_srq_resp resp; |
| struct ib_usrq_object *obj; |
| struct ib_pd *pd; |
| struct ib_srq *srq; |
| struct ib_uobject *uninitialized_var(xrcd_uobj); |
| struct ib_srq_init_attr attr; |
| int ret; |
| |
| obj = (struct ib_usrq_object *)uobj_alloc(uobj_get_type(srq), |
| file->ucontext); |
| if (IS_ERR(obj)) |
| return PTR_ERR(obj); |
| |
| if (cmd->srq_type == IB_SRQT_XRC) { |
| xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->xrcd_handle, |
| file->ucontext); |
| if (IS_ERR(xrcd_uobj)) { |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object; |
| if (!attr.ext.xrc.xrcd) { |
| ret = -EINVAL; |
| goto err_put_xrcd; |
| } |
| |
| obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); |
| atomic_inc(&obj->uxrcd->refcnt); |
| |
| attr.ext.xrc.cq = uobj_get_obj_read(cq, cmd->cq_handle, |
| file->ucontext); |
| if (!attr.ext.xrc.cq) { |
| ret = -EINVAL; |
| goto err_put_xrcd; |
| } |
| } |
| |
| pd = uobj_get_obj_read(pd, cmd->pd_handle, file->ucontext); |
| if (!pd) { |
| ret = -EINVAL; |
| goto err_put_cq; |
| } |
| |
| attr.event_handler = ib_uverbs_srq_event_handler; |
| attr.srq_context = file; |
| attr.srq_type = cmd->srq_type; |
| attr.attr.max_wr = cmd->max_wr; |
| attr.attr.max_sge = cmd->max_sge; |
| attr.attr.srq_limit = cmd->srq_limit; |
| |
| obj->uevent.events_reported = 0; |
| INIT_LIST_HEAD(&obj->uevent.event_list); |
| |
| srq = pd->device->create_srq(pd, &attr, udata); |
| if (IS_ERR(srq)) { |
| ret = PTR_ERR(srq); |
| goto err_put; |
| } |
| |
| srq->device = pd->device; |
| srq->pd = pd; |
| srq->srq_type = cmd->srq_type; |
| srq->uobject = &obj->uevent.uobject; |
| srq->event_handler = attr.event_handler; |
| srq->srq_context = attr.srq_context; |
| |
| if (cmd->srq_type == IB_SRQT_XRC) { |
| srq->ext.xrc.cq = attr.ext.xrc.cq; |
| srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; |
| atomic_inc(&attr.ext.xrc.cq->usecnt); |
| atomic_inc(&attr.ext.xrc.xrcd->usecnt); |
| } |
| |
| atomic_inc(&pd->usecnt); |
| atomic_set(&srq->usecnt, 0); |
| |
| obj->uevent.uobject.object = srq; |
| obj->uevent.uobject.user_handle = cmd->user_handle; |
| |
| memset(&resp, 0, sizeof resp); |
| resp.srq_handle = obj->uevent.uobject.id; |
| resp.max_wr = attr.attr.max_wr; |
| resp.max_sge = attr.attr.max_sge; |
| if (cmd->srq_type == IB_SRQT_XRC) |
| resp.srqn = srq->ext.xrc.srq_num; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd->response, |
| &resp, sizeof resp)) { |
| ret = -EFAULT; |
| goto err_copy; |
| } |
| |
| if (cmd->srq_type == IB_SRQT_XRC) { |
| uobj_put_read(xrcd_uobj); |
| uobj_put_obj_read(attr.ext.xrc.cq); |
| } |
| uobj_put_obj_read(pd); |
| uobj_alloc_commit(&obj->uevent.uobject); |
| |
| return 0; |
| |
| err_copy: |
| ib_destroy_srq(srq); |
| |
| err_put: |
| uobj_put_obj_read(pd); |
| |
| err_put_cq: |
| if (cmd->srq_type == IB_SRQT_XRC) |
| uobj_put_obj_read(attr.ext.xrc.cq); |
| |
| err_put_xrcd: |
| if (cmd->srq_type == IB_SRQT_XRC) { |
| atomic_dec(&obj->uxrcd->refcnt); |
| uobj_put_read(xrcd_uobj); |
| } |
| |
| err: |
| uobj_alloc_abort(&obj->uevent.uobject); |
| return ret; |
| } |
| |
| ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_create_srq cmd; |
| struct ib_uverbs_create_xsrq xcmd; |
| struct ib_uverbs_create_srq_resp resp; |
| struct ib_udata udata; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| xcmd.response = cmd.response; |
| xcmd.user_handle = cmd.user_handle; |
| xcmd.srq_type = IB_SRQT_BASIC; |
| xcmd.pd_handle = cmd.pd_handle; |
| xcmd.max_wr = cmd.max_wr; |
| xcmd.max_sge = cmd.max_sge; |
| xcmd.srq_limit = cmd.srq_limit; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr), |
| out_len - sizeof resp); |
| |
| ret = __uverbs_create_xsrq(file, ib_dev, &xcmd, &udata); |
| if (ret) |
| return ret; |
| |
| return in_len; |
| } |
| |
| ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, int out_len) |
| { |
| struct ib_uverbs_create_xsrq cmd; |
| struct ib_uverbs_create_srq_resp resp; |
| struct ib_udata udata; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, |
| (unsigned long) cmd.response + sizeof resp, |
| in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr), |
| out_len - sizeof resp); |
| |
| ret = __uverbs_create_xsrq(file, ib_dev, &cmd, &udata); |
| if (ret) |
| return ret; |
| |
| return in_len; |
| } |
| |
| ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_modify_srq cmd; |
| struct ib_udata udata; |
| struct ib_srq *srq; |
| struct ib_srq_attr attr; |
| int ret; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
| out_len); |
| |
| srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext); |
| if (!srq) |
| return -EINVAL; |
| |
| attr.max_wr = cmd.max_wr; |
| attr.srq_limit = cmd.srq_limit; |
| |
| ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
| |
| uobj_put_obj_read(srq); |
| |
| return ret ? ret : in_len; |
| } |
| |
| ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, |
| int in_len, int out_len) |
| { |
| struct ib_uverbs_query_srq cmd; |
| struct ib_uverbs_query_srq_resp resp; |
| struct ib_srq_attr attr; |
| struct ib_srq *srq; |
| int ret; |
| |
| if (out_len < sizeof resp) |
| return -ENOSPC; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext); |
| if (!srq) |
| return -EINVAL; |
| |
| ret = ib_query_srq(srq, &attr); |
| |
| uobj_put_obj_read(srq); |
| |
| if (ret) |
| return ret; |
| |
| memset(&resp, 0, sizeof resp); |
| |
| resp.max_wr = attr.max_wr; |
| resp.max_sge = attr.max_sge; |
| resp.srq_limit = attr.srq_limit; |
| |
| if (copy_to_user((void __user *) (unsigned long) cmd.response, |
| &resp, sizeof resp)) |
| return -EFAULT; |
| |
| return in_len; |
| } |
| |
| ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| const char __user *buf, int in_len, |
| int out_len) |
| { |
| struct ib_uverbs_destroy_srq cmd; |
| struct ib_uverbs_destroy_srq_resp resp; |
| struct ib_uobject *uobj; |
| struct ib_uevent_object *obj; |
| int ret = -EINVAL; |
| |
| if (copy_from_user(&cmd, buf, sizeof cmd)) |
| return -EFAULT; |
| |
| uobj = uobj_get_write(uobj_get_type(srq), cmd.srq_handle, |
| file->ucontext); |
| if (IS_ERR(uobj)) |
| return PTR_ERR(uobj); |
| |
| obj = container_of(uobj, struct ib_uevent_object, uobject); |
| /* |
| * Make sure we don't free the memory in remove_commit as we still |
| * needs the uobject memory to create the response. |
| */ |
| uverbs_uobject_get(uobj); |
| |
| memset(&resp, 0, sizeof(resp)); |
| |
| ret = uobj_remove_commit(uobj); |
| if (ret) { |
| uverbs_uobject_put(uobj); |
| return ret; |
| } |
| resp.events_reported = obj->events_reported; |
| uverbs_uobject_put(uobj); |
| if (copy_to_user((void __user *)(unsigned long)cmd.response, |
| &resp, sizeof(resp))) |
| return -EFAULT; |
| |
| return in_len; |
| } |
| |
| int ib_uverbs_ex_query_device(struct ib_uverbs_file *file, |
| struct ib_device *ib_dev, |
| struct ib_udata *ucore, |
| struct ib_udata *uhw) |
| { |
| struct ib_uverbs_ex_query_device_resp resp = { {0} }; |
| struct ib_uverbs_ex_query_device cmd; |
| struct ib_device_attr attr = {0}; |
| int err; |
| |
| if (ucore->inlen < sizeof(cmd)) |
| return -EINVAL; |
| |
| err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
| if (err) |
| return err; |
| |
| if (cmd.comp_mask) |
| return -EINVAL; |
| |
| if (cmd.reserved) |
| return -EINVAL; |
| |
| resp.response_length = offsetof(typeof(resp), odp_caps); |
| |
| if (ucore->outlen < resp.response_length) |
| return -ENOSPC; |
| |
| err = ib_dev->query_device(ib_dev, &attr, uhw); |
| if (err) |
| return err; |
| |
| copy_query_dev_fields(file, ib_dev, &resp.base, &attr); |
| |
| if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps)) |
| goto end; |
| |
| #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING |
| resp.odp_caps.general_caps = attr.odp_caps.general_caps; |
| resp.odp_caps.per_transport_caps.rc_odp_caps = |
| attr.odp_caps.per_transport_caps.rc_odp_caps; |
| resp.odp_caps.per_transport_caps.uc_odp_caps = |
| attr.odp_caps.per_transport_caps.uc_odp_caps; |
| resp.odp_caps.per_transport_caps.ud_odp_caps = |
| attr.odp_caps.per_transport_caps.ud_odp_caps; |
| #endif |
| resp.response_length += sizeof(resp.odp_caps); |
| |
| if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask)) |
| goto end; |
| |
| resp.timestamp_mask = attr.timestamp_mask; |
| resp.response_length += sizeof(resp.timestamp_mask); |
| |
| if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock)) |
| goto end; |
| |
| resp.hca_core_clock = attr.hca_core_clock; |
| resp.response_length += sizeof(resp.hca_core_clock); |
| |
| if (ucore->outlen < resp.response_length + sizeof(resp.device_cap_flags_ex)) |
| goto end; |
| |
| resp.device_cap_flags_ex = attr.device_cap_flags; |
| resp.response_length += sizeof(resp.device_cap_flags_ex); |
| |
| if (ucore->outlen < resp.response_length + sizeof(resp.rss_caps)) |
| goto end; |
| |
| resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts; |
| resp.rss_caps.max_rwq_indirection_tables = |
| attr.rss_caps.max_rwq_indirection_tables; |
| resp.rss_caps.max_rwq_indirection_table_size = |
| attr.rss_caps.max_rwq_indirection_table_size; |
| |
| resp.response_length += sizeof(resp.rss_caps); |
| |
| if (ucore->outlen < resp.response_length + sizeof(resp.max_wq_type_rq)) |
| goto end; |
| |
| resp.max_wq_type_rq = attr.max_wq_type_rq; |
| resp.response_length += sizeof(resp.max_wq_type_rq); |
| |
| if (ucore->outlen < resp.response_length + sizeof(resp.raw_packet_caps)) |
| goto end; |
| |
| resp.raw_packet_caps = attr.raw_packet_caps; |
| resp.response_length += sizeof(resp.raw_packet_caps); |
| end: |
| err = ib_copy_to_udata(ucore, &resp, resp.response_length); |
| return err; |
| } |