diff options
Diffstat (limited to 'include/rdma/uverbs_ioctl.h')
| -rw-r--r-- | include/rdma/uverbs_ioctl.h | 167 |
1 files changed, 113 insertions, 54 deletions
diff --git a/include/rdma/uverbs_ioctl.h b/include/rdma/uverbs_ioctl.h index 86de10ea30af..e6c0de227fad 100644 --- a/include/rdma/uverbs_ioctl.h +++ b/include/rdma/uverbs_ioctl.h @@ -1,33 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ /* * Copyright (c) 2017, Mellanox Technologies inc. 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. */ #ifndef _UVERBS_IOCTL_ @@ -51,6 +24,7 @@ enum uverbs_attr_type { UVERBS_ATTR_TYPE_PTR_OUT, UVERBS_ATTR_TYPE_IDR, UVERBS_ATTR_TYPE_FD, + UVERBS_ATTR_TYPE_RAW_FD, UVERBS_ATTR_TYPE_ENUM_IN, UVERBS_ATTR_TYPE_IDRS_ARRAY, }; @@ -462,8 +436,10 @@ struct uapi_definition { }, \ ##__VA_ARGS__ #define UAPI_DEF_CHAIN_OBJ_TREE_NAMED(_object_enum, ...) \ - UAPI_DEF_CHAIN_OBJ_TREE(_object_enum, &UVERBS_OBJECT(_object_enum), \ - ##__VA_ARGS__) + UAPI_DEF_CHAIN_OBJ_TREE(_object_enum, \ + PTR_IF(IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS), \ + &UVERBS_OBJECT(_object_enum)), \ + ##__VA_ARGS__) /* * ======================================= @@ -548,6 +524,11 @@ struct uapi_definition { .u.obj.access = _access, \ __VA_ARGS__ } }) +#define UVERBS_ATTR_RAW_FD(_attr_id, ...) \ + (&(const struct uverbs_attr_def){ \ + .id = (_attr_id), \ + .attr = { .type = UVERBS_ATTR_TYPE_RAW_FD, __VA_ARGS__ } }) + #define UVERBS_ATTR_PTR_IN(_attr_id, _type, ...) \ (&(const struct uverbs_attr_def){ \ .id = _attr_id, \ @@ -648,11 +629,14 @@ struct uverbs_attr { }; struct uverbs_attr_bundle { - struct ib_udata driver_udata; - struct ib_udata ucore; - struct ib_uverbs_file *ufile; - struct ib_ucontext *context; - DECLARE_BITMAP(attr_present, UVERBS_API_ATTR_BKEY_LEN); + struct_group_tagged(uverbs_attr_bundle_hdr, hdr, + struct ib_udata driver_udata; + struct ib_udata ucore; + struct ib_uverbs_file *ufile; + struct ib_ucontext *context; + struct ib_uobject *uobject; + DECLARE_BITMAP(attr_present, UVERBS_API_ATTR_BKEY_LEN); + ); struct uverbs_attr attrs[]; }; @@ -673,12 +657,15 @@ static inline bool uverbs_attr_is_valid(const struct uverbs_attr_bundle *attrs_b * 'ucontext'. * */ -#define rdma_udata_to_drv_context(udata, drv_dev_struct, member) \ - (udata ? container_of(container_of(udata, struct uverbs_attr_bundle, \ - driver_udata) \ - ->context, \ - drv_dev_struct, member) : \ - (drv_dev_struct *)NULL) +static inline struct uverbs_attr_bundle * +rdma_udata_to_uverbs_attr_bundle(struct ib_udata *udata) +{ + return container_of(udata, struct uverbs_attr_bundle, driver_udata); +} + +#define rdma_udata_to_drv_context(udata, drv_dev_struct, member) \ + (udata ? container_of(rdma_udata_to_uverbs_attr_bundle(udata)->context, \ + drv_dev_struct, member) : (drv_dev_struct *)NULL) #define IS_UVERBS_COPY_ERR(_ret) ((_ret) && (_ret) != -ENOENT) @@ -888,9 +875,24 @@ static inline __malloc void *uverbs_zalloc(struct uverbs_attr_bundle *bundle, { return _uverbs_alloc(bundle, size, GFP_KERNEL | __GFP_ZERO); } -int _uverbs_get_const(s64 *to, const struct uverbs_attr_bundle *attrs_bundle, - size_t idx, s64 lower_bound, u64 upper_bound, - s64 *def_val); + +static inline __malloc void *uverbs_kcalloc(struct uverbs_attr_bundle *bundle, + size_t n, size_t size) +{ + size_t bytes; + + if (unlikely(check_mul_overflow(n, size, &bytes))) + return ERR_PTR(-EOVERFLOW); + return uverbs_zalloc(bundle, bytes); +} + +int _uverbs_get_const_signed(s64 *to, + const struct uverbs_attr_bundle *attrs_bundle, + size_t idx, s64 lower_bound, u64 upper_bound, + s64 *def_val); +int _uverbs_get_const_unsigned(u64 *to, + const struct uverbs_attr_bundle *attrs_bundle, + size_t idx, u64 upper_bound, u64 *def_val); int uverbs_copy_to_struct_or_zero(const struct uverbs_attr_bundle *bundle, size_t idx, const void *from, size_t size); #else @@ -934,27 +936,84 @@ uverbs_copy_to_struct_or_zero(const struct uverbs_attr_bundle *bundle, { return -EINVAL; } +static inline int +_uverbs_get_const_signed(s64 *to, + const struct uverbs_attr_bundle *attrs_bundle, + size_t idx, s64 lower_bound, u64 upper_bound, + s64 *def_val) +{ + return -EINVAL; +} +static inline int +_uverbs_get_const_unsigned(u64 *to, + const struct uverbs_attr_bundle *attrs_bundle, + size_t idx, u64 upper_bound, u64 *def_val) +{ + return -EINVAL; +} #endif -#define uverbs_get_const(_to, _attrs_bundle, _idx) \ +#define uverbs_get_const_signed(_to, _attrs_bundle, _idx) \ ({ \ s64 _val; \ - int _ret = _uverbs_get_const(&_val, _attrs_bundle, _idx, \ - type_min(typeof(*_to)), \ - type_max(typeof(*_to)), NULL); \ - (*_to) = _val; \ + int _ret = \ + _uverbs_get_const_signed(&_val, _attrs_bundle, _idx, \ + type_min(typeof(*(_to))), \ + type_max(typeof(*(_to))), NULL); \ + (*(_to)) = _val; \ _ret; \ }) -#define uverbs_get_const_default(_to, _attrs_bundle, _idx, _default) \ +#define uverbs_get_const_unsigned(_to, _attrs_bundle, _idx) \ + ({ \ + u64 _val; \ + int _ret = \ + _uverbs_get_const_unsigned(&_val, _attrs_bundle, _idx, \ + type_max(typeof(*(_to))), NULL); \ + (*(_to)) = _val; \ + _ret; \ + }) + +#define uverbs_get_const_default_signed(_to, _attrs_bundle, _idx, _default) \ ({ \ s64 _val; \ s64 _def_val = _default; \ int _ret = \ - _uverbs_get_const(&_val, _attrs_bundle, _idx, \ - type_min(typeof(*_to)), \ - type_max(typeof(*_to)), &_def_val); \ - (*_to) = _val; \ + _uverbs_get_const_signed(&_val, _attrs_bundle, _idx, \ + type_min(typeof(*(_to))), \ + type_max(typeof(*(_to))), &_def_val); \ + (*(_to)) = _val; \ + _ret; \ + }) + +#define uverbs_get_const_default_unsigned(_to, _attrs_bundle, _idx, _default) \ + ({ \ + u64 _val; \ + u64 _def_val = _default; \ + int _ret = \ + _uverbs_get_const_unsigned(&_val, _attrs_bundle, _idx, \ + type_max(typeof(*(_to))), &_def_val); \ + (*(_to)) = _val; \ _ret; \ }) + +#define uverbs_get_const(_to, _attrs_bundle, _idx) \ + (is_signed_type(typeof(*(_to))) ? \ + uverbs_get_const_signed(_to, _attrs_bundle, _idx) : \ + uverbs_get_const_unsigned(_to, _attrs_bundle, _idx)) \ + +#define uverbs_get_const_default(_to, _attrs_bundle, _idx, _default) \ + (is_signed_type(typeof(*(_to))) ? \ + uverbs_get_const_default_signed(_to, _attrs_bundle, _idx, \ + _default) : \ + uverbs_get_const_default_unsigned(_to, _attrs_bundle, _idx, \ + _default)) + +static inline int +uverbs_get_raw_fd(int *to, const struct uverbs_attr_bundle *attrs_bundle, + size_t idx) +{ + return uverbs_get_const_signed(to, attrs_bundle, idx); +} + #endif |