1 /* 2 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. 3 * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #include <net/addrconf.h> 35 #include "rxe.h" 36 #include "rxe_loc.h" 37 38 MODULE_AUTHOR("Bob Pearson, Frank Zago, John Groves, Kamal Heib"); 39 MODULE_DESCRIPTION("Soft RDMA transport"); 40 MODULE_LICENSE("Dual BSD/GPL"); 41 MODULE_VERSION("0.2"); 42 43 /* free resources for all ports on a device */ 44 static void rxe_cleanup_ports(struct rxe_dev *rxe) 45 { 46 kfree(rxe->port.pkey_tbl); 47 rxe->port.pkey_tbl = NULL; 48 49 } 50 51 /* free resources for a rxe device all objects created for this device must 52 * have been destroyed 53 */ 54 static void rxe_cleanup(struct rxe_dev *rxe) 55 { 56 rxe_pool_cleanup(&rxe->uc_pool); 57 rxe_pool_cleanup(&rxe->pd_pool); 58 rxe_pool_cleanup(&rxe->ah_pool); 59 rxe_pool_cleanup(&rxe->srq_pool); 60 rxe_pool_cleanup(&rxe->qp_pool); 61 rxe_pool_cleanup(&rxe->cq_pool); 62 rxe_pool_cleanup(&rxe->mr_pool); 63 rxe_pool_cleanup(&rxe->mw_pool); 64 rxe_pool_cleanup(&rxe->mc_grp_pool); 65 rxe_pool_cleanup(&rxe->mc_elem_pool); 66 67 rxe_cleanup_ports(rxe); 68 69 crypto_free_shash(rxe->tfm); 70 } 71 72 /* called when all references have been dropped */ 73 void rxe_release(struct kref *kref) 74 { 75 struct rxe_dev *rxe = container_of(kref, struct rxe_dev, ref_cnt); 76 77 rxe_cleanup(rxe); 78 ib_dealloc_device(&rxe->ib_dev); 79 } 80 81 void rxe_dev_put(struct rxe_dev *rxe) 82 { 83 kref_put(&rxe->ref_cnt, rxe_release); 84 } 85 EXPORT_SYMBOL_GPL(rxe_dev_put); 86 87 /* initialize rxe device parameters */ 88 static int rxe_init_device_param(struct rxe_dev *rxe) 89 { 90 rxe->max_inline_data = RXE_MAX_INLINE_DATA; 91 92 rxe->attr.fw_ver = RXE_FW_VER; 93 rxe->attr.max_mr_size = RXE_MAX_MR_SIZE; 94 rxe->attr.page_size_cap = RXE_PAGE_SIZE_CAP; 95 rxe->attr.vendor_id = RXE_VENDOR_ID; 96 rxe->attr.vendor_part_id = RXE_VENDOR_PART_ID; 97 rxe->attr.hw_ver = RXE_HW_VER; 98 rxe->attr.max_qp = RXE_MAX_QP; 99 rxe->attr.max_qp_wr = RXE_MAX_QP_WR; 100 rxe->attr.device_cap_flags = RXE_DEVICE_CAP_FLAGS; 101 rxe->attr.max_sge = RXE_MAX_SGE; 102 rxe->attr.max_sge_rd = RXE_MAX_SGE_RD; 103 rxe->attr.max_cq = RXE_MAX_CQ; 104 rxe->attr.max_cqe = (1 << RXE_MAX_LOG_CQE) - 1; 105 rxe->attr.max_mr = RXE_MAX_MR; 106 rxe->attr.max_pd = RXE_MAX_PD; 107 rxe->attr.max_qp_rd_atom = RXE_MAX_QP_RD_ATOM; 108 rxe->attr.max_ee_rd_atom = RXE_MAX_EE_RD_ATOM; 109 rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM; 110 rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM; 111 rxe->attr.max_ee_init_rd_atom = RXE_MAX_EE_INIT_RD_ATOM; 112 rxe->attr.atomic_cap = RXE_ATOMIC_CAP; 113 rxe->attr.max_ee = RXE_MAX_EE; 114 rxe->attr.max_rdd = RXE_MAX_RDD; 115 rxe->attr.max_mw = RXE_MAX_MW; 116 rxe->attr.max_raw_ipv6_qp = RXE_MAX_RAW_IPV6_QP; 117 rxe->attr.max_raw_ethy_qp = RXE_MAX_RAW_ETHY_QP; 118 rxe->attr.max_mcast_grp = RXE_MAX_MCAST_GRP; 119 rxe->attr.max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH; 120 rxe->attr.max_total_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH; 121 rxe->attr.max_ah = RXE_MAX_AH; 122 rxe->attr.max_fmr = RXE_MAX_FMR; 123 rxe->attr.max_map_per_fmr = RXE_MAX_MAP_PER_FMR; 124 rxe->attr.max_srq = RXE_MAX_SRQ; 125 rxe->attr.max_srq_wr = RXE_MAX_SRQ_WR; 126 rxe->attr.max_srq_sge = RXE_MAX_SRQ_SGE; 127 rxe->attr.max_fast_reg_page_list_len = RXE_MAX_FMR_PAGE_LIST_LEN; 128 rxe->attr.max_pkeys = RXE_MAX_PKEYS; 129 rxe->attr.local_ca_ack_delay = RXE_LOCAL_CA_ACK_DELAY; 130 131 rxe->max_ucontext = RXE_MAX_UCONTEXT; 132 133 return 0; 134 } 135 136 /* initialize port attributes */ 137 static int rxe_init_port_param(struct rxe_port *port) 138 { 139 port->attr.state = RXE_PORT_STATE; 140 port->attr.max_mtu = RXE_PORT_MAX_MTU; 141 port->attr.active_mtu = RXE_PORT_ACTIVE_MTU; 142 port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN; 143 port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS; 144 port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ; 145 port->attr.bad_pkey_cntr = RXE_PORT_BAD_PKEY_CNTR; 146 port->attr.qkey_viol_cntr = RXE_PORT_QKEY_VIOL_CNTR; 147 port->attr.pkey_tbl_len = RXE_PORT_PKEY_TBL_LEN; 148 port->attr.lid = RXE_PORT_LID; 149 port->attr.sm_lid = RXE_PORT_SM_LID; 150 port->attr.lmc = RXE_PORT_LMC; 151 port->attr.max_vl_num = RXE_PORT_MAX_VL_NUM; 152 port->attr.sm_sl = RXE_PORT_SM_SL; 153 port->attr.subnet_timeout = RXE_PORT_SUBNET_TIMEOUT; 154 port->attr.init_type_reply = RXE_PORT_INIT_TYPE_REPLY; 155 port->attr.active_width = RXE_PORT_ACTIVE_WIDTH; 156 port->attr.active_speed = RXE_PORT_ACTIVE_SPEED; 157 port->attr.phys_state = RXE_PORT_PHYS_STATE; 158 port->mtu_cap = 159 ib_mtu_enum_to_int(RXE_PORT_ACTIVE_MTU); 160 port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX); 161 162 return 0; 163 } 164 165 /* initialize port state, note IB convention that HCA ports are always 166 * numbered from 1 167 */ 168 static int rxe_init_ports(struct rxe_dev *rxe) 169 { 170 struct rxe_port *port = &rxe->port; 171 172 rxe_init_port_param(port); 173 174 if (!port->attr.pkey_tbl_len || !port->attr.gid_tbl_len) 175 return -EINVAL; 176 177 port->pkey_tbl = kcalloc(port->attr.pkey_tbl_len, 178 sizeof(*port->pkey_tbl), GFP_KERNEL); 179 180 if (!port->pkey_tbl) 181 return -ENOMEM; 182 183 port->pkey_tbl[0] = 0xffff; 184 addrconf_addr_eui48((unsigned char *)&port->port_guid, 185 rxe->ndev->dev_addr); 186 187 spin_lock_init(&port->port_lock); 188 189 return 0; 190 } 191 192 /* init pools of managed objects */ 193 static int rxe_init_pools(struct rxe_dev *rxe) 194 { 195 int err; 196 197 err = rxe_pool_init(rxe, &rxe->uc_pool, RXE_TYPE_UC, 198 rxe->max_ucontext); 199 if (err) 200 goto err1; 201 202 err = rxe_pool_init(rxe, &rxe->pd_pool, RXE_TYPE_PD, 203 rxe->attr.max_pd); 204 if (err) 205 goto err2; 206 207 err = rxe_pool_init(rxe, &rxe->ah_pool, RXE_TYPE_AH, 208 rxe->attr.max_ah); 209 if (err) 210 goto err3; 211 212 err = rxe_pool_init(rxe, &rxe->srq_pool, RXE_TYPE_SRQ, 213 rxe->attr.max_srq); 214 if (err) 215 goto err4; 216 217 err = rxe_pool_init(rxe, &rxe->qp_pool, RXE_TYPE_QP, 218 rxe->attr.max_qp); 219 if (err) 220 goto err5; 221 222 err = rxe_pool_init(rxe, &rxe->cq_pool, RXE_TYPE_CQ, 223 rxe->attr.max_cq); 224 if (err) 225 goto err6; 226 227 err = rxe_pool_init(rxe, &rxe->mr_pool, RXE_TYPE_MR, 228 rxe->attr.max_mr); 229 if (err) 230 goto err7; 231 232 err = rxe_pool_init(rxe, &rxe->mw_pool, RXE_TYPE_MW, 233 rxe->attr.max_mw); 234 if (err) 235 goto err8; 236 237 err = rxe_pool_init(rxe, &rxe->mc_grp_pool, RXE_TYPE_MC_GRP, 238 rxe->attr.max_mcast_grp); 239 if (err) 240 goto err9; 241 242 err = rxe_pool_init(rxe, &rxe->mc_elem_pool, RXE_TYPE_MC_ELEM, 243 rxe->attr.max_total_mcast_qp_attach); 244 if (err) 245 goto err10; 246 247 return 0; 248 249 err10: 250 rxe_pool_cleanup(&rxe->mc_grp_pool); 251 err9: 252 rxe_pool_cleanup(&rxe->mw_pool); 253 err8: 254 rxe_pool_cleanup(&rxe->mr_pool); 255 err7: 256 rxe_pool_cleanup(&rxe->cq_pool); 257 err6: 258 rxe_pool_cleanup(&rxe->qp_pool); 259 err5: 260 rxe_pool_cleanup(&rxe->srq_pool); 261 err4: 262 rxe_pool_cleanup(&rxe->ah_pool); 263 err3: 264 rxe_pool_cleanup(&rxe->pd_pool); 265 err2: 266 rxe_pool_cleanup(&rxe->uc_pool); 267 err1: 268 return err; 269 } 270 271 /* initialize rxe device state */ 272 static int rxe_init(struct rxe_dev *rxe) 273 { 274 int err; 275 276 /* init default device parameters */ 277 rxe_init_device_param(rxe); 278 279 err = rxe_init_ports(rxe); 280 if (err) 281 goto err1; 282 283 err = rxe_init_pools(rxe); 284 if (err) 285 goto err2; 286 287 /* init pending mmap list */ 288 spin_lock_init(&rxe->mmap_offset_lock); 289 spin_lock_init(&rxe->pending_lock); 290 INIT_LIST_HEAD(&rxe->pending_mmaps); 291 INIT_LIST_HEAD(&rxe->list); 292 293 mutex_init(&rxe->usdev_lock); 294 295 return 0; 296 297 err2: 298 rxe_cleanup_ports(rxe); 299 err1: 300 return err; 301 } 302 303 int rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu) 304 { 305 struct rxe_port *port = &rxe->port; 306 enum ib_mtu mtu; 307 308 mtu = eth_mtu_int_to_enum(ndev_mtu); 309 310 /* Make sure that new MTU in range */ 311 mtu = mtu ? min_t(enum ib_mtu, mtu, RXE_PORT_MAX_MTU) : IB_MTU_256; 312 313 port->attr.active_mtu = mtu; 314 port->mtu_cap = ib_mtu_enum_to_int(mtu); 315 316 return 0; 317 } 318 EXPORT_SYMBOL(rxe_set_mtu); 319 320 /* called by ifc layer to create new rxe device. 321 * The caller should allocate memory for rxe by calling ib_alloc_device. 322 */ 323 int rxe_add(struct rxe_dev *rxe, unsigned int mtu) 324 { 325 int err; 326 327 kref_init(&rxe->ref_cnt); 328 329 err = rxe_init(rxe); 330 if (err) 331 goto err1; 332 333 err = rxe_set_mtu(rxe, mtu); 334 if (err) 335 goto err1; 336 337 err = rxe_register_device(rxe); 338 if (err) 339 goto err1; 340 341 return 0; 342 343 err1: 344 rxe_dev_put(rxe); 345 return err; 346 } 347 EXPORT_SYMBOL(rxe_add); 348 349 /* called by the ifc layer to remove a device */ 350 void rxe_remove(struct rxe_dev *rxe) 351 { 352 rxe_unregister_device(rxe); 353 354 rxe_dev_put(rxe); 355 } 356 EXPORT_SYMBOL(rxe_remove); 357 358 static int __init rxe_module_init(void) 359 { 360 int err; 361 362 /* initialize slab caches for managed objects */ 363 err = rxe_cache_init(); 364 if (err) { 365 pr_err("unable to init object pools\n"); 366 return err; 367 } 368 369 err = rxe_net_init(); 370 if (err) 371 return err; 372 373 pr_info("loaded\n"); 374 return 0; 375 } 376 377 static void __exit rxe_module_exit(void) 378 { 379 rxe_remove_all(); 380 rxe_net_exit(); 381 rxe_cache_exit(); 382 383 pr_info("unloaded\n"); 384 } 385 386 late_initcall(rxe_module_init); 387 module_exit(rxe_module_exit); 388