1 /* 2 * Copyright (c) 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. 4 * Copyright (c) 2005 Mellanox Technologies. All rights reserved. 5 * Copyright (c) 2005 Voltaire, Inc. All rights reserved. 6 * Copyright (c) 2005 PathScale, Inc. All rights reserved. 7 * 8 * This software is available to you under a choice of one of two 9 * licenses. You may choose to be licensed under the terms of the GNU 10 * General Public License (GPL) Version 2, available from the file 11 * COPYING in the main directory of this source tree, or the 12 * OpenIB.org BSD license below: 13 * 14 * Redistribution and use in source and binary forms, with or 15 * without modification, are permitted provided that the following 16 * conditions are met: 17 * 18 * - Redistributions of source code must retain the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer. 21 * 22 * - Redistributions in binary form must reproduce the above 23 * copyright notice, this list of conditions and the following 24 * disclaimer in the documentation and/or other materials 25 * provided with the distribution. 26 * 27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 34 * SOFTWARE. 35 */ 36 37 #ifndef UVERBS_H 38 #define UVERBS_H 39 40 #include <linux/kref.h> 41 #include <linux/idr.h> 42 #include <linux/mutex.h> 43 #include <linux/completion.h> 44 #include <linux/cdev.h> 45 #include <linux/rbtree.h> 46 47 #include <rdma/ib_verbs.h> 48 #include <rdma/ib_verbs_exp.h> 49 #include <rdma/ib_umem.h> 50 #include <rdma/ib_user_verbs.h> 51 #include <rdma/ib_user_verbs_exp.h> 52 53 /* 54 * Our lifetime rules for these structs are the following: 55 * 56 * struct ib_uverbs_device: One reference is held by the module and 57 * released in ib_uverbs_remove_one(). Another reference is taken by 58 * ib_uverbs_open() each time the character special file is opened, 59 * and released in ib_uverbs_release_file() when the file is released. 60 * 61 * struct ib_uverbs_file: One reference is held by the VFS and 62 * released when the file is closed. Another reference is taken when 63 * an asynchronous event queue file is created and released when the 64 * event file is closed. 65 * 66 * struct ib_uverbs_event_file: One reference is held by the VFS and 67 * released when the file is closed. For asynchronous event files, 68 * another reference is held by the corresponding main context file 69 * and released when that file is closed. For completion event files, 70 * a reference is taken when a CQ is created that uses the file, and 71 * released when the CQ is destroyed. 72 */ 73 74 struct ib_uverbs_device { 75 struct kref ref; 76 int num_comp_vectors; 77 struct completion comp; 78 struct device *dev; 79 struct ib_device *ib_dev; 80 int devnum; 81 struct cdev cdev; 82 struct rb_root xrcd_tree; 83 struct mutex xrcd_tree_mutex; 84 }; 85 86 struct ib_uverbs_event_file { 87 struct kref ref; 88 struct file *filp; 89 int is_async; 90 struct ib_uverbs_file *uverbs_file; 91 spinlock_t lock; 92 int is_closed; 93 wait_queue_head_t poll_wait; 94 struct fasync_struct *async_queue; 95 struct list_head event_list; 96 }; 97 98 struct ib_uverbs_file { 99 struct kref ref; 100 struct mutex mutex; 101 struct ib_uverbs_device *device; 102 struct ib_ucontext *ucontext; 103 struct ib_event_handler event_handler; 104 struct ib_uverbs_event_file *async_file; 105 }; 106 107 struct ib_uverbs_event { 108 union { 109 struct ib_uverbs_async_event_desc async; 110 struct ib_uverbs_comp_event_desc comp; 111 } desc; 112 struct list_head list; 113 struct list_head obj_list; 114 u32 *counter; 115 }; 116 117 struct ib_uverbs_mcast_entry { 118 struct list_head list; 119 union ib_gid gid; 120 u16 lid; 121 }; 122 123 struct ib_uevent_object { 124 struct ib_uobject uobject; 125 struct list_head event_list; 126 u32 events_reported; 127 }; 128 129 struct ib_uxrcd_object { 130 struct ib_uobject uobject; 131 atomic_t refcnt; 132 }; 133 134 struct ib_usrq_object { 135 struct ib_uevent_object uevent; 136 struct ib_uxrcd_object *uxrcd; 137 }; 138 139 struct ib_uqp_object { 140 struct ib_uevent_object uevent; 141 struct list_head mcast_list; 142 struct ib_uxrcd_object *uxrcd; 143 }; 144 145 struct ib_ucq_object { 146 struct ib_uobject uobject; 147 struct ib_uverbs_file *uverbs_file; 148 struct list_head comp_list; 149 struct list_head async_list; 150 u32 comp_events_reported; 151 u32 async_events_reported; 152 }; 153 154 struct ib_udct_object { 155 struct ib_uobject uobject; 156 }; 157 158 extern spinlock_t ib_uverbs_idr_lock; 159 extern struct idr ib_uverbs_pd_idr; 160 extern struct idr ib_uverbs_mr_idr; 161 extern struct idr ib_uverbs_mw_idr; 162 extern struct idr ib_uverbs_ah_idr; 163 extern struct idr ib_uverbs_cq_idr; 164 extern struct idr ib_uverbs_qp_idr; 165 extern struct idr ib_uverbs_srq_idr; 166 extern struct idr ib_uverbs_xrcd_idr; 167 extern struct idr ib_uverbs_rule_idr; 168 extern struct idr ib_uverbs_dct_idr; 169 170 void idr_remove_uobj(struct idr *idp, struct ib_uobject *uobj); 171 172 struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file, 173 int is_async); 174 struct ib_uverbs_event_file *ib_uverbs_lookup_comp_file(int fd); 175 176 void ib_uverbs_release_ucq(struct ib_uverbs_file *file, 177 struct ib_uverbs_event_file *ev_file, 178 struct ib_ucq_object *uobj); 179 void ib_uverbs_release_uevent(struct ib_uverbs_file *file, 180 struct ib_uevent_object *uobj); 181 182 void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context); 183 void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr); 184 void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr); 185 void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr); 186 void ib_uverbs_event_handler(struct ib_event_handler *handler, 187 struct ib_event *event); 188 void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, struct ib_xrcd *xrcd); 189 190 struct ib_uverbs_flow_spec { 191 union { 192 union { 193 struct ib_uverbs_flow_spec_hdr hdr; 194 struct { 195 __u32 type; 196 __u16 size; 197 __u16 reserved; 198 }; 199 }; 200 struct ib_uverbs_flow_spec_eth eth; 201 struct ib_uverbs_flow_spec_ib ib; 202 struct ib_uverbs_flow_spec_ipv4 ipv4; 203 struct ib_uverbs_flow_spec_tcp_udp tcp_udp; 204 }; 205 }; 206 207 #define IB_UVERBS_DECLARE_CMD(name) \ 208 ssize_t ib_uverbs_##name(struct ib_uverbs_file *file, \ 209 const char __user *buf, int in_len, \ 210 int out_len) 211 212 IB_UVERBS_DECLARE_CMD(get_context); 213 IB_UVERBS_DECLARE_CMD(query_device); 214 IB_UVERBS_DECLARE_CMD(query_port); 215 IB_UVERBS_DECLARE_CMD(alloc_pd); 216 IB_UVERBS_DECLARE_CMD(dealloc_pd); 217 IB_UVERBS_DECLARE_CMD(reg_mr); 218 IB_UVERBS_DECLARE_CMD(dereg_mr); 219 IB_UVERBS_DECLARE_CMD(alloc_mw); 220 IB_UVERBS_DECLARE_CMD(dealloc_mw); 221 IB_UVERBS_DECLARE_CMD(create_comp_channel); 222 IB_UVERBS_DECLARE_CMD(create_cq); 223 IB_UVERBS_DECLARE_CMD(resize_cq); 224 IB_UVERBS_DECLARE_CMD(poll_cq); 225 IB_UVERBS_DECLARE_CMD(req_notify_cq); 226 IB_UVERBS_DECLARE_CMD(destroy_cq); 227 IB_UVERBS_DECLARE_CMD(create_qp); 228 IB_UVERBS_DECLARE_CMD(open_qp); 229 IB_UVERBS_DECLARE_CMD(query_qp); 230 IB_UVERBS_DECLARE_CMD(modify_qp); 231 IB_UVERBS_DECLARE_CMD(destroy_qp); 232 IB_UVERBS_DECLARE_CMD(post_send); 233 IB_UVERBS_DECLARE_CMD(post_recv); 234 IB_UVERBS_DECLARE_CMD(post_srq_recv); 235 IB_UVERBS_DECLARE_CMD(create_ah); 236 IB_UVERBS_DECLARE_CMD(destroy_ah); 237 IB_UVERBS_DECLARE_CMD(attach_mcast); 238 IB_UVERBS_DECLARE_CMD(detach_mcast); 239 IB_UVERBS_DECLARE_CMD(create_srq); 240 IB_UVERBS_DECLARE_CMD(modify_srq); 241 IB_UVERBS_DECLARE_CMD(query_srq); 242 IB_UVERBS_DECLARE_CMD(destroy_srq); 243 IB_UVERBS_DECLARE_CMD(create_xsrq); 244 IB_UVERBS_DECLARE_CMD(open_xrcd); 245 IB_UVERBS_DECLARE_CMD(close_xrcd); 246 247 #define IB_UVERBS_DECLARE_EX_CMD(name) \ 248 int ib_uverbs_ex_##name(struct ib_uverbs_file *file,\ 249 struct ib_udata *ucore, \ 250 struct ib_udata *uhw) 251 252 #define IB_UVERBS_DECLARE_EXP_CMD(name) \ 253 ssize_t ib_uverbs_exp_##name(struct ib_uverbs_file *file, \ 254 struct ib_udata *ucore, \ 255 struct ib_udata *uhw) 256 257 IB_UVERBS_DECLARE_EX_CMD(create_flow); 258 IB_UVERBS_DECLARE_EX_CMD(destroy_flow); 259 260 IB_UVERBS_DECLARE_EXP_CMD(create_qp); 261 IB_UVERBS_DECLARE_EXP_CMD(modify_cq); 262 IB_UVERBS_DECLARE_EXP_CMD(modify_qp); 263 IB_UVERBS_DECLARE_EXP_CMD(create_cq); 264 IB_UVERBS_DECLARE_EXP_CMD(query_device); 265 IB_UVERBS_DECLARE_EXP_CMD(create_dct); 266 IB_UVERBS_DECLARE_EXP_CMD(destroy_dct); 267 IB_UVERBS_DECLARE_EXP_CMD(query_dct); 268 269 #endif /* UVERBS_H */ 270