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