1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
3 * Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.
6 #include <rdma/uverbs_std_types.h>
9 #include <rdma/uverbs_ioctl.h>
10 #include <rdma/opa_addr.h>
13 * This ioctl method allows calling any defined write or write_ex
14 * handler. This essentially replaces the hdr/ex_hdr system with the ioctl
15 * marshalling, and brings the non-ex path into the same marshalling as the ex
18 static int UVERBS_HANDLER(UVERBS_METHOD_INVOKE_WRITE)(
19 struct uverbs_attr_bundle *attrs)
21 struct uverbs_api *uapi = attrs->ufile->device->uapi;
22 const struct uverbs_api_write_method *method_elm;
26 rc = uverbs_get_const(&cmd, attrs, UVERBS_ATTR_WRITE_CMD);
30 method_elm = uapi_get_method(uapi, cmd);
31 if (IS_ERR(method_elm))
32 return PTR_ERR(method_elm);
34 uverbs_fill_udata(attrs, &attrs->ucore, UVERBS_ATTR_CORE_IN,
35 UVERBS_ATTR_CORE_OUT);
37 if (attrs->ucore.inlen < method_elm->req_size ||
38 attrs->ucore.outlen < method_elm->resp_size)
41 return method_elm->handler(attrs);
44 DECLARE_UVERBS_NAMED_METHOD(UVERBS_METHOD_INVOKE_WRITE,
45 UVERBS_ATTR_CONST_IN(UVERBS_ATTR_WRITE_CMD,
46 enum ib_uverbs_write_cmds,
48 UVERBS_ATTR_PTR_IN(UVERBS_ATTR_CORE_IN,
49 UVERBS_ATTR_MIN_SIZE(sizeof(u32)),
51 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_CORE_OUT,
52 UVERBS_ATTR_MIN_SIZE(0),
57 gather_objects_handle(struct ib_uverbs_file *ufile,
58 const struct uverbs_api_object *uapi_object,
59 struct uverbs_attr_bundle *attrs,
63 u64 max_count = out_len / sizeof(u32);
64 struct ib_uobject *obj;
68 /* Allocated memory that cannot page out where we gather
69 * all object ids under a spin_lock.
71 handles = uverbs_zalloc(attrs, out_len);
75 spin_lock_irq(&ufile->uobjects_lock);
76 list_for_each_entry(obj, &ufile->uobjects, list) {
79 if (obj->uapi_object != uapi_object)
82 if (count >= max_count)
85 handles[count] = obj_id;
88 spin_unlock_irq(&ufile->uobjects_lock);
94 static int UVERBS_HANDLER(UVERBS_METHOD_INFO_HANDLES)(
95 struct uverbs_attr_bundle *attrs)
97 const struct uverbs_api_object *uapi_object;
104 out_len = uverbs_attr_get_len(attrs, UVERBS_ATTR_INFO_HANDLES_LIST);
105 if (out_len <= 0 || (out_len % sizeof(u32) != 0))
108 ret = uverbs_get_const(&object_id, attrs, UVERBS_ATTR_INFO_OBJECT_ID);
112 uapi_object = uapi_get_object(attrs->ufile->device->uapi, object_id);
116 handles = gather_objects_handle(attrs->ufile, uapi_object, attrs,
119 return PTR_ERR(handles);
121 ret = uverbs_copy_to(attrs, UVERBS_ATTR_INFO_HANDLES_LIST, handles,
122 sizeof(u32) * total);
126 ret = uverbs_copy_to(attrs, UVERBS_ATTR_INFO_TOTAL_HANDLES, &total,
132 void copy_port_attr_to_resp(struct ib_port_attr *attr,
133 struct ib_uverbs_query_port_resp *resp,
134 struct ib_device *ib_dev, u8 port_num)
136 resp->state = attr->state;
137 resp->max_mtu = attr->max_mtu;
138 resp->active_mtu = attr->active_mtu;
139 resp->gid_tbl_len = attr->gid_tbl_len;
140 resp->port_cap_flags = make_port_cap_flags(attr);
141 resp->max_msg_sz = attr->max_msg_sz;
142 resp->bad_pkey_cntr = attr->bad_pkey_cntr;
143 resp->qkey_viol_cntr = attr->qkey_viol_cntr;
144 resp->pkey_tbl_len = attr->pkey_tbl_len;
146 if (rdma_is_grh_required(ib_dev, port_num))
147 resp->flags |= IB_UVERBS_QPF_GRH_REQUIRED;
149 if (rdma_cap_opa_ah(ib_dev, port_num)) {
150 resp->lid = OPA_TO_IB_UCAST_LID(attr->lid);
151 resp->sm_lid = OPA_TO_IB_UCAST_LID(attr->sm_lid);
153 resp->lid = ib_lid_cpu16(attr->lid);
154 resp->sm_lid = ib_lid_cpu16(attr->sm_lid);
157 resp->lmc = attr->lmc;
158 resp->max_vl_num = attr->max_vl_num;
159 resp->sm_sl = attr->sm_sl;
160 resp->subnet_timeout = attr->subnet_timeout;
161 resp->init_type_reply = attr->init_type_reply;
162 resp->active_width = attr->active_width;
163 resp->active_speed = attr->active_speed;
164 resp->phys_state = attr->phys_state;
165 resp->link_layer = rdma_port_get_link_layer(ib_dev, port_num);
168 static int UVERBS_HANDLER(UVERBS_METHOD_QUERY_PORT)(
169 struct uverbs_attr_bundle *attrs)
171 struct ib_device *ib_dev;
172 struct ib_port_attr attr = {};
173 struct ib_uverbs_query_port_resp_ex resp = {};
174 struct ib_ucontext *ucontext;
178 ucontext = ib_uverbs_get_ucontext(attrs);
179 if (IS_ERR(ucontext))
180 return PTR_ERR(ucontext);
181 ib_dev = ucontext->device;
183 /* FIXME: Extend the UAPI_DEF_OBJ_NEEDS_FN stuff.. */
184 if (!ib_dev->ops.query_port)
187 ret = uverbs_get_const(&port_num, attrs,
188 UVERBS_ATTR_QUERY_PORT_PORT_NUM);
192 ret = ib_query_port(ib_dev, port_num, &attr);
196 copy_port_attr_to_resp(&attr, &resp.legacy_resp, ib_dev, port_num);
197 resp.port_cap_flags2 = attr.port_cap_flags2;
199 return uverbs_copy_to_struct_or_zero(attrs, UVERBS_ATTR_QUERY_PORT_RESP,
200 &resp, sizeof(resp));
203 DECLARE_UVERBS_NAMED_METHOD(
204 UVERBS_METHOD_INFO_HANDLES,
205 /* Also includes any device specific object ids */
206 UVERBS_ATTR_CONST_IN(UVERBS_ATTR_INFO_OBJECT_ID,
207 enum uverbs_default_objects, UA_MANDATORY),
208 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_INFO_TOTAL_HANDLES,
209 UVERBS_ATTR_TYPE(u32), UA_OPTIONAL),
210 UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_INFO_HANDLES_LIST,
211 UVERBS_ATTR_MIN_SIZE(sizeof(u32)), UA_OPTIONAL));
213 DECLARE_UVERBS_NAMED_METHOD(
214 UVERBS_METHOD_QUERY_PORT,
215 UVERBS_ATTR_CONST_IN(UVERBS_ATTR_QUERY_PORT_PORT_NUM, u8, UA_MANDATORY),
217 UVERBS_ATTR_QUERY_PORT_RESP,
218 UVERBS_ATTR_STRUCT(struct ib_uverbs_query_port_resp_ex,
222 DECLARE_UVERBS_GLOBAL_METHODS(UVERBS_OBJECT_DEVICE,
223 &UVERBS_METHOD(UVERBS_METHOD_INVOKE_WRITE),
224 &UVERBS_METHOD(UVERBS_METHOD_INFO_HANDLES),
225 &UVERBS_METHOD(UVERBS_METHOD_QUERY_PORT));
227 const struct uapi_definition uverbs_def_obj_device[] = {
228 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(UVERBS_OBJECT_DEVICE),