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 42 /* free resources for all ports on a device */ 43 static void rxe_cleanup_ports(struct rxe_dev *rxe) 44 { 45 kfree(rxe->port.pkey_tbl); 46 rxe->port.pkey_tbl = NULL; 47 48 } 49 50 /* free resources for a rxe device all objects created for this device must 51 * have been destroyed 52 */ 53 static void rxe_cleanup(struct rxe_dev *rxe) 54 { 55 rxe_pool_cleanup(&rxe->uc_pool); 56 rxe_pool_cleanup(&rxe->pd_pool); 57 rxe_pool_cleanup(&rxe->ah_pool); 58 rxe_pool_cleanup(&rxe->srq_pool); 59 rxe_pool_cleanup(&rxe->qp_pool); 60 rxe_pool_cleanup(&rxe->cq_pool); 61 rxe_pool_cleanup(&rxe->mr_pool); 62 rxe_pool_cleanup(&rxe->mw_pool); 63 rxe_pool_cleanup(&rxe->mc_grp_pool); 64 rxe_pool_cleanup(&rxe->mc_elem_pool); 65 66 rxe_cleanup_ports(rxe); 67 68 crypto_free_shash(rxe->tfm); 69 } 70 71 /* called when all references have been dropped */ 72 void rxe_release(struct kref *kref) 73 { 74 struct rxe_dev *rxe = container_of(kref, struct rxe_dev, ref_cnt); 75 76 rxe_cleanup(rxe); 77 ib_dealloc_device(&rxe->ib_dev); 78 } 79 80 void rxe_dev_put(struct rxe_dev *rxe) 81 { 82 kref_put(&rxe->ref_cnt, rxe_release); 83 } 84 EXPORT_SYMBOL_GPL(rxe_dev_put); 85 86 /* initialize rxe device parameters */ 87 static int rxe_init_device_param(struct rxe_dev *rxe) 88 { 89 rxe->max_inline_data = RXE_MAX_INLINE_DATA; 90 91 rxe->attr.fw_ver = RXE_FW_VER; 92 rxe->attr.max_mr_size = RXE_MAX_MR_SIZE; 93 rxe->attr.page_size_cap = RXE_PAGE_SIZE_CAP; 94 rxe->attr.vendor_id = RXE_VENDOR_ID; 95 rxe->attr.vendor_part_id = RXE_VENDOR_PART_ID; 96 rxe->attr.hw_ver = RXE_HW_VER; 97 rxe->attr.max_qp = RXE_MAX_QP; 98 rxe->attr.max_qp_wr = RXE_MAX_QP_WR; 99 rxe->attr.device_cap_flags = RXE_DEVICE_CAP_FLAGS; 100 rxe->attr.max_sge = RXE_MAX_SGE; 101 rxe->attr.max_sge_rd = RXE_MAX_SGE_RD; 102 rxe->attr.max_cq = RXE_MAX_CQ; 103 rxe->attr.max_cqe = (1 << RXE_MAX_LOG_CQE) - 1; 104 rxe->attr.max_mr = RXE_MAX_MR; 105 rxe->attr.max_pd = RXE_MAX_PD; 106 rxe->attr.max_qp_rd_atom = RXE_MAX_QP_RD_ATOM; 107 rxe->attr.max_ee_rd_atom = RXE_MAX_EE_RD_ATOM; 108 rxe->attr.max_res_rd_atom = RXE_MAX_RES_RD_ATOM; 109 rxe->attr.max_qp_init_rd_atom = RXE_MAX_QP_INIT_RD_ATOM; 110 rxe->attr.max_ee_init_rd_atom = RXE_MAX_EE_INIT_RD_ATOM; 111 rxe->attr.atomic_cap = RXE_ATOMIC_CAP; 112 rxe->attr.max_ee = RXE_MAX_EE; 113 rxe->attr.max_rdd = RXE_MAX_RDD; 114 rxe->attr.max_mw = RXE_MAX_MW; 115 rxe->attr.max_raw_ipv6_qp = RXE_MAX_RAW_IPV6_QP; 116 rxe->attr.max_raw_ethy_qp = RXE_MAX_RAW_ETHY_QP; 117 rxe->attr.max_mcast_grp = RXE_MAX_MCAST_GRP; 118 rxe->attr.max_mcast_qp_attach = RXE_MAX_MCAST_QP_ATTACH; 119 rxe->attr.max_total_mcast_qp_attach = RXE_MAX_TOT_MCAST_QP_ATTACH; 120 rxe->attr.max_ah = RXE_MAX_AH; 121 rxe->attr.max_fmr = RXE_MAX_FMR; 122 rxe->attr.max_map_per_fmr = RXE_MAX_MAP_PER_FMR; 123 rxe->attr.max_srq = RXE_MAX_SRQ; 124 rxe->attr.max_srq_wr = RXE_MAX_SRQ_WR; 125 rxe->attr.max_srq_sge = RXE_MAX_SRQ_SGE; 126 rxe->attr.max_fast_reg_page_list_len = RXE_MAX_FMR_PAGE_LIST_LEN; 127 rxe->attr.max_pkeys = RXE_MAX_PKEYS; 128 rxe->attr.local_ca_ack_delay = RXE_LOCAL_CA_ACK_DELAY; 129 130 rxe->max_ucontext = RXE_MAX_UCONTEXT; 131 132 return 0; 133 } 134 135 /* initialize port attributes */ 136 static int rxe_init_port_param(struct rxe_port *port) 137 { 138 port->attr.state = RXE_PORT_STATE; 139 port->attr.max_mtu = RXE_PORT_MAX_MTU; 140 port->attr.active_mtu = RXE_PORT_ACTIVE_MTU; 141 port->attr.gid_tbl_len = RXE_PORT_GID_TBL_LEN; 142 port->attr.port_cap_flags = RXE_PORT_PORT_CAP_FLAGS; 143 port->attr.max_msg_sz = RXE_PORT_MAX_MSG_SZ; 144 port->attr.bad_pkey_cntr = RXE_PORT_BAD_PKEY_CNTR; 145 port->attr.qkey_viol_cntr = RXE_PORT_QKEY_VIOL_CNTR; 146 port->attr.pkey_tbl_len = RXE_PORT_PKEY_TBL_LEN; 147 port->attr.lid = RXE_PORT_LID; 148 port->attr.sm_lid = RXE_PORT_SM_LID; 149 port->attr.lmc = RXE_PORT_LMC; 150 port->attr.max_vl_num = RXE_PORT_MAX_VL_NUM; 151 port->attr.sm_sl = RXE_PORT_SM_SL; 152 port->attr.subnet_timeout = RXE_PORT_SUBNET_TIMEOUT; 153 port->attr.init_type_reply = RXE_PORT_INIT_TYPE_REPLY; 154 port->attr.active_width = RXE_PORT_ACTIVE_WIDTH; 155 port->attr.active_speed = RXE_PORT_ACTIVE_SPEED; 156 port->attr.phys_state = RXE_PORT_PHYS_STATE; 157 port->mtu_cap = 158 ib_mtu_enum_to_int(RXE_PORT_ACTIVE_MTU); 159 port->subnet_prefix = cpu_to_be64(RXE_PORT_SUBNET_PREFIX); 160 161 return 0; 162 } 163 164 /* initialize port state, note IB convention that HCA ports are always 165 * numbered from 1 166 */ 167 static int rxe_init_ports(struct rxe_dev *rxe) 168 { 169 struct rxe_port *port = &rxe->port; 170 171 rxe_init_port_param(port); 172 173 if (!port->attr.pkey_tbl_len || !port->attr.gid_tbl_len) 174 return -EINVAL; 175 176 port->pkey_tbl = kcalloc(port->attr.pkey_tbl_len, 177 sizeof(*port->pkey_tbl), GFP_KERNEL); 178 179 if (!port->pkey_tbl) 180 return -ENOMEM; 181 182 port->pkey_tbl[0] = 0xffff; 183 addrconf_addr_eui48((unsigned char *)&port->port_guid, 184 rxe->ndev->dev_addr); 185 186 spin_lock_init(&port->port_lock); 187 188 return 0; 189 } 190 191 /* init pools of managed objects */ 192 static int rxe_init_pools(struct rxe_dev *rxe) 193 { 194 int err; 195 196 err = rxe_pool_init(rxe, &rxe->uc_pool, RXE_TYPE_UC, 197 rxe->max_ucontext); 198 if (err) 199 goto err1; 200 201 err = rxe_pool_init(rxe, &rxe->pd_pool, RXE_TYPE_PD, 202 rxe->attr.max_pd); 203 if (err) 204 goto err2; 205 206 err = rxe_pool_init(rxe, &rxe->ah_pool, RXE_TYPE_AH, 207 rxe->attr.max_ah); 208 if (err) 209 goto err3; 210 211 err = rxe_pool_init(rxe, &rxe->srq_pool, RXE_TYPE_SRQ, 212 rxe->attr.max_srq); 213 if (err) 214 goto err4; 215 216 err = rxe_pool_init(rxe, &rxe->qp_pool, RXE_TYPE_QP, 217 rxe->attr.max_qp); 218 if (err) 219 goto err5; 220 221 err = rxe_pool_init(rxe, &rxe->cq_pool, RXE_TYPE_CQ, 222 rxe->attr.max_cq); 223 if (err) 224 goto err6; 225 226 err = rxe_pool_init(rxe, &rxe->mr_pool, RXE_TYPE_MR, 227 rxe->attr.max_mr); 228 if (err) 229 goto err7; 230 231 err = rxe_pool_init(rxe, &rxe->mw_pool, RXE_TYPE_MW, 232 rxe->attr.max_mw); 233 if (err) 234 goto err8; 235 236 err = rxe_pool_init(rxe, &rxe->mc_grp_pool, RXE_TYPE_MC_GRP, 237 rxe->attr.max_mcast_grp); 238 if (err) 239 goto err9; 240 241 err = rxe_pool_init(rxe, &rxe->mc_elem_pool, RXE_TYPE_MC_ELEM, 242 rxe->attr.max_total_mcast_qp_attach); 243 if (err) 244 goto err10; 245 246 return 0; 247 248 err10: 249 rxe_pool_cleanup(&rxe->mc_grp_pool); 250 err9: 251 rxe_pool_cleanup(&rxe->mw_pool); 252 err8: 253 rxe_pool_cleanup(&rxe->mr_pool); 254 err7: 255 rxe_pool_cleanup(&rxe->cq_pool); 256 err6: 257 rxe_pool_cleanup(&rxe->qp_pool); 258 err5: 259 rxe_pool_cleanup(&rxe->srq_pool); 260 err4: 261 rxe_pool_cleanup(&rxe->ah_pool); 262 err3: 263 rxe_pool_cleanup(&rxe->pd_pool); 264 err2: 265 rxe_pool_cleanup(&rxe->uc_pool); 266 err1: 267 return err; 268 } 269 270 /* initialize rxe device state */ 271 static int rxe_init(struct rxe_dev *rxe) 272 { 273 int err; 274 275 /* init default device parameters */ 276 rxe_init_device_param(rxe); 277 278 err = rxe_init_ports(rxe); 279 if (err) 280 goto err1; 281 282 err = rxe_init_pools(rxe); 283 if (err) 284 goto err2; 285 286 /* init pending mmap list */ 287 spin_lock_init(&rxe->mmap_offset_lock); 288 spin_lock_init(&rxe->pending_lock); 289 INIT_LIST_HEAD(&rxe->pending_mmaps); 290 INIT_LIST_HEAD(&rxe->list); 291 292 mutex_init(&rxe->usdev_lock); 293 294 return 0; 295 296 err2: 297 rxe_cleanup_ports(rxe); 298 err1: 299 return err; 300 } 301 302 int rxe_set_mtu(struct rxe_dev *rxe, unsigned int ndev_mtu) 303 { 304 struct rxe_port *port = &rxe->port; 305 enum ib_mtu mtu; 306 307 mtu = eth_mtu_int_to_enum(ndev_mtu); 308 309 /* Make sure that new MTU in range */ 310 mtu = mtu ? min_t(enum ib_mtu, mtu, RXE_PORT_MAX_MTU) : IB_MTU_256; 311 312 port->attr.active_mtu = mtu; 313 port->mtu_cap = ib_mtu_enum_to_int(mtu); 314 315 return 0; 316 } 317 EXPORT_SYMBOL(rxe_set_mtu); 318 319 /* called by ifc layer to create new rxe device. 320 * The caller should allocate memory for rxe by calling ib_alloc_device. 321 */ 322 int rxe_add(struct rxe_dev *rxe, unsigned int mtu) 323 { 324 int err; 325 326 kref_init(&rxe->ref_cnt); 327 328 err = rxe_init(rxe); 329 if (err) 330 goto err1; 331 332 err = rxe_set_mtu(rxe, mtu); 333 if (err) 334 goto err1; 335 336 err = rxe_register_device(rxe); 337 if (err) 338 goto err1; 339 340 return 0; 341 342 err1: 343 rxe_dev_put(rxe); 344 return err; 345 } 346 EXPORT_SYMBOL(rxe_add); 347 348 /* called by the ifc layer to remove a device */ 349 void rxe_remove(struct rxe_dev *rxe) 350 { 351 rxe_unregister_device(rxe); 352 353 rxe_dev_put(rxe); 354 } 355 EXPORT_SYMBOL(rxe_remove); 356 357 static int __init rxe_module_init(void) 358 { 359 int err; 360 361 /* initialize slab caches for managed objects */ 362 err = rxe_cache_init(); 363 if (err) { 364 pr_err("unable to init object pools\n"); 365 return err; 366 } 367 368 err = rxe_net_init(); 369 if (err) 370 return err; 371 372 pr_info("loaded\n"); 373 return 0; 374 } 375 376 static void __exit rxe_module_exit(void) 377 { 378 rxe_remove_all(); 379 rxe_net_exit(); 380 rxe_cache_exit(); 381 382 pr_info("unloaded\n"); 383 } 384 385 late_initcall(rxe_module_init); 386 module_exit(rxe_module_exit); 387