11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. 31da177e4SLinus Torvalds * Copyright (c) 2004 Infinicon Corporation. All rights reserved. 41da177e4SLinus Torvalds * Copyright (c) 2004 Intel Corporation. All rights reserved. 51da177e4SLinus Torvalds * Copyright (c) 2004 Topspin Corporation. All rights reserved. 61da177e4SLinus Torvalds * Copyright (c) 2004 Voltaire Corporation. All rights reserved. 72a1d9b7fSRoland Dreier * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 833b9b3eeSRoland Dreier * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * This software is available to you under a choice of one of two 111da177e4SLinus Torvalds * licenses. You may choose to be licensed under the terms of the GNU 121da177e4SLinus Torvalds * General Public License (GPL) Version 2, available from the file 131da177e4SLinus Torvalds * COPYING in the main directory of this source tree, or the 141da177e4SLinus Torvalds * OpenIB.org BSD license below: 151da177e4SLinus Torvalds * 161da177e4SLinus Torvalds * Redistribution and use in source and binary forms, with or 171da177e4SLinus Torvalds * without modification, are permitted provided that the following 181da177e4SLinus Torvalds * conditions are met: 191da177e4SLinus Torvalds * 201da177e4SLinus Torvalds * - Redistributions of source code must retain the above 211da177e4SLinus Torvalds * copyright notice, this list of conditions and the following 221da177e4SLinus Torvalds * disclaimer. 231da177e4SLinus Torvalds * 241da177e4SLinus Torvalds * - Redistributions in binary form must reproduce the above 251da177e4SLinus Torvalds * copyright notice, this list of conditions and the following 261da177e4SLinus Torvalds * disclaimer in the documentation and/or other materials 271da177e4SLinus Torvalds * provided with the distribution. 281da177e4SLinus Torvalds * 291da177e4SLinus Torvalds * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 301da177e4SLinus Torvalds * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 311da177e4SLinus Torvalds * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 321da177e4SLinus Torvalds * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 331da177e4SLinus Torvalds * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 341da177e4SLinus Torvalds * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 351da177e4SLinus Torvalds * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 361da177e4SLinus Torvalds * SOFTWARE. 371da177e4SLinus Torvalds */ 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds #include <linux/errno.h> 401da177e4SLinus Torvalds #include <linux/err.h> 41b108d976SPaul Gortmaker #include <linux/export.h> 428c65b4a6STim Schmielau #include <linux/string.h> 430e0ec7e0SSean Hefty #include <linux/slab.h> 44dbf727deSMatan Barak #include <linux/in.h> 45dbf727deSMatan Barak #include <linux/in6.h> 46dbf727deSMatan Barak #include <net/addrconf.h> 471da177e4SLinus Torvalds 48a4d61e84SRoland Dreier #include <rdma/ib_verbs.h> 49a4d61e84SRoland Dreier #include <rdma/ib_cache.h> 50dd5f03beSMatan Barak #include <rdma/ib_addr.h> 51a060b562SChristoph Hellwig #include <rdma/rw.h> 521da177e4SLinus Torvalds 53ed4c54e5SOr Gerlitz #include "core_priv.h" 541da177e4SLinus Torvalds 552b1b5b60SSagi Grimberg static const char * const ib_events[] = { 562b1b5b60SSagi Grimberg [IB_EVENT_CQ_ERR] = "CQ error", 572b1b5b60SSagi Grimberg [IB_EVENT_QP_FATAL] = "QP fatal error", 582b1b5b60SSagi Grimberg [IB_EVENT_QP_REQ_ERR] = "QP request error", 592b1b5b60SSagi Grimberg [IB_EVENT_QP_ACCESS_ERR] = "QP access error", 602b1b5b60SSagi Grimberg [IB_EVENT_COMM_EST] = "communication established", 612b1b5b60SSagi Grimberg [IB_EVENT_SQ_DRAINED] = "send queue drained", 622b1b5b60SSagi Grimberg [IB_EVENT_PATH_MIG] = "path migration successful", 632b1b5b60SSagi Grimberg [IB_EVENT_PATH_MIG_ERR] = "path migration error", 642b1b5b60SSagi Grimberg [IB_EVENT_DEVICE_FATAL] = "device fatal error", 652b1b5b60SSagi Grimberg [IB_EVENT_PORT_ACTIVE] = "port active", 662b1b5b60SSagi Grimberg [IB_EVENT_PORT_ERR] = "port error", 672b1b5b60SSagi Grimberg [IB_EVENT_LID_CHANGE] = "LID change", 682b1b5b60SSagi Grimberg [IB_EVENT_PKEY_CHANGE] = "P_key change", 692b1b5b60SSagi Grimberg [IB_EVENT_SM_CHANGE] = "SM change", 702b1b5b60SSagi Grimberg [IB_EVENT_SRQ_ERR] = "SRQ error", 712b1b5b60SSagi Grimberg [IB_EVENT_SRQ_LIMIT_REACHED] = "SRQ limit reached", 722b1b5b60SSagi Grimberg [IB_EVENT_QP_LAST_WQE_REACHED] = "last WQE reached", 732b1b5b60SSagi Grimberg [IB_EVENT_CLIENT_REREGISTER] = "client reregister", 742b1b5b60SSagi Grimberg [IB_EVENT_GID_CHANGE] = "GID changed", 752b1b5b60SSagi Grimberg }; 762b1b5b60SSagi Grimberg 77db7489e0SBart Van Assche const char *__attribute_const__ ib_event_msg(enum ib_event_type event) 782b1b5b60SSagi Grimberg { 792b1b5b60SSagi Grimberg size_t index = event; 802b1b5b60SSagi Grimberg 812b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ? 822b1b5b60SSagi Grimberg ib_events[index] : "unrecognized event"; 832b1b5b60SSagi Grimberg } 842b1b5b60SSagi Grimberg EXPORT_SYMBOL(ib_event_msg); 852b1b5b60SSagi Grimberg 862b1b5b60SSagi Grimberg static const char * const wc_statuses[] = { 872b1b5b60SSagi Grimberg [IB_WC_SUCCESS] = "success", 882b1b5b60SSagi Grimberg [IB_WC_LOC_LEN_ERR] = "local length error", 892b1b5b60SSagi Grimberg [IB_WC_LOC_QP_OP_ERR] = "local QP operation error", 902b1b5b60SSagi Grimberg [IB_WC_LOC_EEC_OP_ERR] = "local EE context operation error", 912b1b5b60SSagi Grimberg [IB_WC_LOC_PROT_ERR] = "local protection error", 922b1b5b60SSagi Grimberg [IB_WC_WR_FLUSH_ERR] = "WR flushed", 932b1b5b60SSagi Grimberg [IB_WC_MW_BIND_ERR] = "memory management operation error", 942b1b5b60SSagi Grimberg [IB_WC_BAD_RESP_ERR] = "bad response error", 952b1b5b60SSagi Grimberg [IB_WC_LOC_ACCESS_ERR] = "local access error", 962b1b5b60SSagi Grimberg [IB_WC_REM_INV_REQ_ERR] = "invalid request error", 972b1b5b60SSagi Grimberg [IB_WC_REM_ACCESS_ERR] = "remote access error", 982b1b5b60SSagi Grimberg [IB_WC_REM_OP_ERR] = "remote operation error", 992b1b5b60SSagi Grimberg [IB_WC_RETRY_EXC_ERR] = "transport retry counter exceeded", 1002b1b5b60SSagi Grimberg [IB_WC_RNR_RETRY_EXC_ERR] = "RNR retry counter exceeded", 1012b1b5b60SSagi Grimberg [IB_WC_LOC_RDD_VIOL_ERR] = "local RDD violation error", 1022b1b5b60SSagi Grimberg [IB_WC_REM_INV_RD_REQ_ERR] = "remote invalid RD request", 1032b1b5b60SSagi Grimberg [IB_WC_REM_ABORT_ERR] = "operation aborted", 1042b1b5b60SSagi Grimberg [IB_WC_INV_EECN_ERR] = "invalid EE context number", 1052b1b5b60SSagi Grimberg [IB_WC_INV_EEC_STATE_ERR] = "invalid EE context state", 1062b1b5b60SSagi Grimberg [IB_WC_FATAL_ERR] = "fatal error", 1072b1b5b60SSagi Grimberg [IB_WC_RESP_TIMEOUT_ERR] = "response timeout error", 1082b1b5b60SSagi Grimberg [IB_WC_GENERAL_ERR] = "general error", 1092b1b5b60SSagi Grimberg }; 1102b1b5b60SSagi Grimberg 111db7489e0SBart Van Assche const char *__attribute_const__ ib_wc_status_msg(enum ib_wc_status status) 1122b1b5b60SSagi Grimberg { 1132b1b5b60SSagi Grimberg size_t index = status; 1142b1b5b60SSagi Grimberg 1152b1b5b60SSagi Grimberg return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ? 1162b1b5b60SSagi Grimberg wc_statuses[index] : "unrecognized status"; 1172b1b5b60SSagi Grimberg } 1182b1b5b60SSagi Grimberg EXPORT_SYMBOL(ib_wc_status_msg); 1192b1b5b60SSagi Grimberg 1208385fd84SRoland Dreier __attribute_const__ int ib_rate_to_mult(enum ib_rate rate) 121bf6a9e31SJack Morgenstein { 122bf6a9e31SJack Morgenstein switch (rate) { 123bf6a9e31SJack Morgenstein case IB_RATE_2_5_GBPS: return 1; 124bf6a9e31SJack Morgenstein case IB_RATE_5_GBPS: return 2; 125bf6a9e31SJack Morgenstein case IB_RATE_10_GBPS: return 4; 126bf6a9e31SJack Morgenstein case IB_RATE_20_GBPS: return 8; 127bf6a9e31SJack Morgenstein case IB_RATE_30_GBPS: return 12; 128bf6a9e31SJack Morgenstein case IB_RATE_40_GBPS: return 16; 129bf6a9e31SJack Morgenstein case IB_RATE_60_GBPS: return 24; 130bf6a9e31SJack Morgenstein case IB_RATE_80_GBPS: return 32; 131bf6a9e31SJack Morgenstein case IB_RATE_120_GBPS: return 48; 132bf6a9e31SJack Morgenstein default: return -1; 133bf6a9e31SJack Morgenstein } 134bf6a9e31SJack Morgenstein } 135bf6a9e31SJack Morgenstein EXPORT_SYMBOL(ib_rate_to_mult); 136bf6a9e31SJack Morgenstein 1378385fd84SRoland Dreier __attribute_const__ enum ib_rate mult_to_ib_rate(int mult) 138bf6a9e31SJack Morgenstein { 139bf6a9e31SJack Morgenstein switch (mult) { 140bf6a9e31SJack Morgenstein case 1: return IB_RATE_2_5_GBPS; 141bf6a9e31SJack Morgenstein case 2: return IB_RATE_5_GBPS; 142bf6a9e31SJack Morgenstein case 4: return IB_RATE_10_GBPS; 143bf6a9e31SJack Morgenstein case 8: return IB_RATE_20_GBPS; 144bf6a9e31SJack Morgenstein case 12: return IB_RATE_30_GBPS; 145bf6a9e31SJack Morgenstein case 16: return IB_RATE_40_GBPS; 146bf6a9e31SJack Morgenstein case 24: return IB_RATE_60_GBPS; 147bf6a9e31SJack Morgenstein case 32: return IB_RATE_80_GBPS; 148bf6a9e31SJack Morgenstein case 48: return IB_RATE_120_GBPS; 149bf6a9e31SJack Morgenstein default: return IB_RATE_PORT_CURRENT; 150bf6a9e31SJack Morgenstein } 151bf6a9e31SJack Morgenstein } 152bf6a9e31SJack Morgenstein EXPORT_SYMBOL(mult_to_ib_rate); 153bf6a9e31SJack Morgenstein 1548385fd84SRoland Dreier __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate) 15571eeba16SMarcel Apfelbaum { 15671eeba16SMarcel Apfelbaum switch (rate) { 15771eeba16SMarcel Apfelbaum case IB_RATE_2_5_GBPS: return 2500; 15871eeba16SMarcel Apfelbaum case IB_RATE_5_GBPS: return 5000; 15971eeba16SMarcel Apfelbaum case IB_RATE_10_GBPS: return 10000; 16071eeba16SMarcel Apfelbaum case IB_RATE_20_GBPS: return 20000; 16171eeba16SMarcel Apfelbaum case IB_RATE_30_GBPS: return 30000; 16271eeba16SMarcel Apfelbaum case IB_RATE_40_GBPS: return 40000; 16371eeba16SMarcel Apfelbaum case IB_RATE_60_GBPS: return 60000; 16471eeba16SMarcel Apfelbaum case IB_RATE_80_GBPS: return 80000; 16571eeba16SMarcel Apfelbaum case IB_RATE_120_GBPS: return 120000; 16671eeba16SMarcel Apfelbaum case IB_RATE_14_GBPS: return 14062; 16771eeba16SMarcel Apfelbaum case IB_RATE_56_GBPS: return 56250; 16871eeba16SMarcel Apfelbaum case IB_RATE_112_GBPS: return 112500; 16971eeba16SMarcel Apfelbaum case IB_RATE_168_GBPS: return 168750; 17071eeba16SMarcel Apfelbaum case IB_RATE_25_GBPS: return 25781; 17171eeba16SMarcel Apfelbaum case IB_RATE_100_GBPS: return 103125; 17271eeba16SMarcel Apfelbaum case IB_RATE_200_GBPS: return 206250; 17371eeba16SMarcel Apfelbaum case IB_RATE_300_GBPS: return 309375; 17471eeba16SMarcel Apfelbaum default: return -1; 17571eeba16SMarcel Apfelbaum } 17671eeba16SMarcel Apfelbaum } 17771eeba16SMarcel Apfelbaum EXPORT_SYMBOL(ib_rate_to_mbps); 17871eeba16SMarcel Apfelbaum 1798385fd84SRoland Dreier __attribute_const__ enum rdma_transport_type 18007ebafbaSTom Tucker rdma_node_get_transport(enum rdma_node_type node_type) 18107ebafbaSTom Tucker { 18207ebafbaSTom Tucker switch (node_type) { 18307ebafbaSTom Tucker case RDMA_NODE_IB_CA: 18407ebafbaSTom Tucker case RDMA_NODE_IB_SWITCH: 18507ebafbaSTom Tucker case RDMA_NODE_IB_ROUTER: 18607ebafbaSTom Tucker return RDMA_TRANSPORT_IB; 18707ebafbaSTom Tucker case RDMA_NODE_RNIC: 18807ebafbaSTom Tucker return RDMA_TRANSPORT_IWARP; 189180771a3SUpinder Malhi \(umalhi\) case RDMA_NODE_USNIC: 1905db5765eSUpinder Malhi return RDMA_TRANSPORT_USNIC; 1915db5765eSUpinder Malhi case RDMA_NODE_USNIC_UDP: 192248567f7SUpinder Malhi return RDMA_TRANSPORT_USNIC_UDP; 19307ebafbaSTom Tucker default: 19407ebafbaSTom Tucker BUG(); 19507ebafbaSTom Tucker return 0; 19607ebafbaSTom Tucker } 19707ebafbaSTom Tucker } 19807ebafbaSTom Tucker EXPORT_SYMBOL(rdma_node_get_transport); 19907ebafbaSTom Tucker 200a3f5adafSEli Cohen enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) 201a3f5adafSEli Cohen { 202a3f5adafSEli Cohen if (device->get_link_layer) 203a3f5adafSEli Cohen return device->get_link_layer(device, port_num); 204a3f5adafSEli Cohen 205a3f5adafSEli Cohen switch (rdma_node_get_transport(device->node_type)) { 206a3f5adafSEli Cohen case RDMA_TRANSPORT_IB: 207a3f5adafSEli Cohen return IB_LINK_LAYER_INFINIBAND; 208a3f5adafSEli Cohen case RDMA_TRANSPORT_IWARP: 209180771a3SUpinder Malhi \(umalhi\) case RDMA_TRANSPORT_USNIC: 210248567f7SUpinder Malhi case RDMA_TRANSPORT_USNIC_UDP: 211a3f5adafSEli Cohen return IB_LINK_LAYER_ETHERNET; 212a3f5adafSEli Cohen default: 213a3f5adafSEli Cohen return IB_LINK_LAYER_UNSPECIFIED; 214a3f5adafSEli Cohen } 215a3f5adafSEli Cohen } 216a3f5adafSEli Cohen EXPORT_SYMBOL(rdma_port_get_link_layer); 217a3f5adafSEli Cohen 2181da177e4SLinus Torvalds /* Protection domains */ 2191da177e4SLinus Torvalds 22096249d70SJason Gunthorpe /** 22196249d70SJason Gunthorpe * ib_alloc_pd - Allocates an unused protection domain. 22296249d70SJason Gunthorpe * @device: The device on which to allocate the protection domain. 22396249d70SJason Gunthorpe * 22496249d70SJason Gunthorpe * A protection domain object provides an association between QPs, shared 22596249d70SJason Gunthorpe * receive queues, address handles, memory regions, and memory windows. 22696249d70SJason Gunthorpe * 22796249d70SJason Gunthorpe * Every PD has a local_dma_lkey which can be used as the lkey value for local 22896249d70SJason Gunthorpe * memory operations. 22996249d70SJason Gunthorpe */ 230ed082d36SChristoph Hellwig struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags, 231ed082d36SChristoph Hellwig const char *caller) 2321da177e4SLinus Torvalds { 2331da177e4SLinus Torvalds struct ib_pd *pd; 234ed082d36SChristoph Hellwig int mr_access_flags = 0; 2351da177e4SLinus Torvalds 236b5e81bf5SRoland Dreier pd = device->alloc_pd(device, NULL, NULL); 23796249d70SJason Gunthorpe if (IS_ERR(pd)) 23896249d70SJason Gunthorpe return pd; 2391da177e4SLinus Torvalds 2401da177e4SLinus Torvalds pd->device = device; 241b5e81bf5SRoland Dreier pd->uobject = NULL; 24250d46335SChristoph Hellwig pd->__internal_mr = NULL; 2431da177e4SLinus Torvalds atomic_set(&pd->usecnt, 0); 244ed082d36SChristoph Hellwig pd->flags = flags; 24596249d70SJason Gunthorpe 24686bee4c9SOr Gerlitz if (device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY) 24796249d70SJason Gunthorpe pd->local_dma_lkey = device->local_dma_lkey; 248ed082d36SChristoph Hellwig else 249ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_LOCAL_WRITE; 250ed082d36SChristoph Hellwig 251ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) { 252ed082d36SChristoph Hellwig pr_warn("%s: enabling unsafe global rkey\n", caller); 253ed082d36SChristoph Hellwig mr_access_flags |= IB_ACCESS_REMOTE_READ | IB_ACCESS_REMOTE_WRITE; 254ed082d36SChristoph Hellwig } 255ed082d36SChristoph Hellwig 256ed082d36SChristoph Hellwig if (mr_access_flags) { 25796249d70SJason Gunthorpe struct ib_mr *mr; 25896249d70SJason Gunthorpe 2595ef990f0SChristoph Hellwig mr = pd->device->get_dma_mr(pd, mr_access_flags); 26096249d70SJason Gunthorpe if (IS_ERR(mr)) { 26196249d70SJason Gunthorpe ib_dealloc_pd(pd); 2625ef990f0SChristoph Hellwig return ERR_CAST(mr); 2631da177e4SLinus Torvalds } 2641da177e4SLinus Torvalds 2655ef990f0SChristoph Hellwig mr->device = pd->device; 2665ef990f0SChristoph Hellwig mr->pd = pd; 2675ef990f0SChristoph Hellwig mr->uobject = NULL; 2685ef990f0SChristoph Hellwig mr->need_inval = false; 2695ef990f0SChristoph Hellwig 27050d46335SChristoph Hellwig pd->__internal_mr = mr; 271ed082d36SChristoph Hellwig 272ed082d36SChristoph Hellwig if (!(device->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) 27350d46335SChristoph Hellwig pd->local_dma_lkey = pd->__internal_mr->lkey; 274ed082d36SChristoph Hellwig 275ed082d36SChristoph Hellwig if (flags & IB_PD_UNSAFE_GLOBAL_RKEY) 276ed082d36SChristoph Hellwig pd->unsafe_global_rkey = pd->__internal_mr->rkey; 27796249d70SJason Gunthorpe } 278ed082d36SChristoph Hellwig 2791da177e4SLinus Torvalds return pd; 2801da177e4SLinus Torvalds } 281ed082d36SChristoph Hellwig EXPORT_SYMBOL(__ib_alloc_pd); 2821da177e4SLinus Torvalds 2837dd78647SJason Gunthorpe /** 2847dd78647SJason Gunthorpe * ib_dealloc_pd - Deallocates a protection domain. 2857dd78647SJason Gunthorpe * @pd: The protection domain to deallocate. 2867dd78647SJason Gunthorpe * 2877dd78647SJason Gunthorpe * It is an error to call this function while any resources in the pd still 2887dd78647SJason Gunthorpe * exist. The caller is responsible to synchronously destroy them and 2897dd78647SJason Gunthorpe * guarantee no new allocations will happen. 2907dd78647SJason Gunthorpe */ 2917dd78647SJason Gunthorpe void ib_dealloc_pd(struct ib_pd *pd) 2921da177e4SLinus Torvalds { 2937dd78647SJason Gunthorpe int ret; 2941da177e4SLinus Torvalds 29550d46335SChristoph Hellwig if (pd->__internal_mr) { 2965ef990f0SChristoph Hellwig ret = pd->device->dereg_mr(pd->__internal_mr); 2977dd78647SJason Gunthorpe WARN_ON(ret); 29850d46335SChristoph Hellwig pd->__internal_mr = NULL; 29996249d70SJason Gunthorpe } 30096249d70SJason Gunthorpe 3017dd78647SJason Gunthorpe /* uverbs manipulates usecnt with proper locking, while the kabi 3027dd78647SJason Gunthorpe requires the caller to guarantee we can't race here. */ 3037dd78647SJason Gunthorpe WARN_ON(atomic_read(&pd->usecnt)); 3041da177e4SLinus Torvalds 3057dd78647SJason Gunthorpe /* Making delalloc_pd a void return is a WIP, no driver should return 3067dd78647SJason Gunthorpe an error here. */ 3077dd78647SJason Gunthorpe ret = pd->device->dealloc_pd(pd); 3087dd78647SJason Gunthorpe WARN_ONCE(ret, "Infiniband HW driver failed dealloc_pd"); 3091da177e4SLinus Torvalds } 3101da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_pd); 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds /* Address handles */ 3131da177e4SLinus Torvalds 3141da177e4SLinus Torvalds struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) 3151da177e4SLinus Torvalds { 3161da177e4SLinus Torvalds struct ib_ah *ah; 3171da177e4SLinus Torvalds 318477864c8SMoni Shoua ah = pd->device->create_ah(pd, ah_attr, NULL); 3191da177e4SLinus Torvalds 3201da177e4SLinus Torvalds if (!IS_ERR(ah)) { 3211da177e4SLinus Torvalds ah->device = pd->device; 3221da177e4SLinus Torvalds ah->pd = pd; 323b5e81bf5SRoland Dreier ah->uobject = NULL; 3241da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 3251da177e4SLinus Torvalds } 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds return ah; 3281da177e4SLinus Torvalds } 3291da177e4SLinus Torvalds EXPORT_SYMBOL(ib_create_ah); 3301da177e4SLinus Torvalds 331850d8fd7SMoni Shoua int ib_get_rdma_header_version(const union rdma_network_hdr *hdr) 332c865f246SSomnath Kotur { 333c865f246SSomnath Kotur const struct iphdr *ip4h = (struct iphdr *)&hdr->roce4grh; 334c865f246SSomnath Kotur struct iphdr ip4h_checked; 335c865f246SSomnath Kotur const struct ipv6hdr *ip6h = (struct ipv6hdr *)&hdr->ibgrh; 336c865f246SSomnath Kotur 337c865f246SSomnath Kotur /* If it's IPv6, the version must be 6, otherwise, the first 338c865f246SSomnath Kotur * 20 bytes (before the IPv4 header) are garbled. 339c865f246SSomnath Kotur */ 340c865f246SSomnath Kotur if (ip6h->version != 6) 341c865f246SSomnath Kotur return (ip4h->version == 4) ? 4 : 0; 342c865f246SSomnath Kotur /* version may be 6 or 4 because the first 20 bytes could be garbled */ 343c865f246SSomnath Kotur 344c865f246SSomnath Kotur /* RoCE v2 requires no options, thus header length 345c865f246SSomnath Kotur * must be 5 words 346c865f246SSomnath Kotur */ 347c865f246SSomnath Kotur if (ip4h->ihl != 5) 348c865f246SSomnath Kotur return 6; 349c865f246SSomnath Kotur 350c865f246SSomnath Kotur /* Verify checksum. 351c865f246SSomnath Kotur * We can't write on scattered buffers so we need to copy to 352c865f246SSomnath Kotur * temp buffer. 353c865f246SSomnath Kotur */ 354c865f246SSomnath Kotur memcpy(&ip4h_checked, ip4h, sizeof(ip4h_checked)); 355c865f246SSomnath Kotur ip4h_checked.check = 0; 356c865f246SSomnath Kotur ip4h_checked.check = ip_fast_csum((u8 *)&ip4h_checked, 5); 357c865f246SSomnath Kotur /* if IPv4 header checksum is OK, believe it */ 358c865f246SSomnath Kotur if (ip4h->check == ip4h_checked.check) 359c865f246SSomnath Kotur return 4; 360c865f246SSomnath Kotur return 6; 361c865f246SSomnath Kotur } 362850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_rdma_header_version); 363c865f246SSomnath Kotur 364c865f246SSomnath Kotur static enum rdma_network_type ib_get_net_type_by_grh(struct ib_device *device, 365c865f246SSomnath Kotur u8 port_num, 366c865f246SSomnath Kotur const struct ib_grh *grh) 367c865f246SSomnath Kotur { 368c865f246SSomnath Kotur int grh_version; 369c865f246SSomnath Kotur 370c865f246SSomnath Kotur if (rdma_protocol_ib(device, port_num)) 371c865f246SSomnath Kotur return RDMA_NETWORK_IB; 372c865f246SSomnath Kotur 373850d8fd7SMoni Shoua grh_version = ib_get_rdma_header_version((union rdma_network_hdr *)grh); 374c865f246SSomnath Kotur 375c865f246SSomnath Kotur if (grh_version == 4) 376c865f246SSomnath Kotur return RDMA_NETWORK_IPV4; 377c865f246SSomnath Kotur 378c865f246SSomnath Kotur if (grh->next_hdr == IPPROTO_UDP) 379c865f246SSomnath Kotur return RDMA_NETWORK_IPV6; 380c865f246SSomnath Kotur 381c865f246SSomnath Kotur return RDMA_NETWORK_ROCE_V1; 382c865f246SSomnath Kotur } 383c865f246SSomnath Kotur 384dbf727deSMatan Barak struct find_gid_index_context { 385dbf727deSMatan Barak u16 vlan_id; 386c865f246SSomnath Kotur enum ib_gid_type gid_type; 387dbf727deSMatan Barak }; 388dbf727deSMatan Barak 389dbf727deSMatan Barak static bool find_gid_index(const union ib_gid *gid, 390dbf727deSMatan Barak const struct ib_gid_attr *gid_attr, 391dbf727deSMatan Barak void *context) 392dbf727deSMatan Barak { 393dbf727deSMatan Barak struct find_gid_index_context *ctx = 394dbf727deSMatan Barak (struct find_gid_index_context *)context; 395dbf727deSMatan Barak 396c865f246SSomnath Kotur if (ctx->gid_type != gid_attr->gid_type) 397c865f246SSomnath Kotur return false; 398c865f246SSomnath Kotur 399dbf727deSMatan Barak if ((!!(ctx->vlan_id != 0xffff) == !is_vlan_dev(gid_attr->ndev)) || 400dbf727deSMatan Barak (is_vlan_dev(gid_attr->ndev) && 401dbf727deSMatan Barak vlan_dev_vlan_id(gid_attr->ndev) != ctx->vlan_id)) 402dbf727deSMatan Barak return false; 403dbf727deSMatan Barak 404dbf727deSMatan Barak return true; 405dbf727deSMatan Barak } 406dbf727deSMatan Barak 407dbf727deSMatan Barak static int get_sgid_index_from_eth(struct ib_device *device, u8 port_num, 408dbf727deSMatan Barak u16 vlan_id, const union ib_gid *sgid, 409c865f246SSomnath Kotur enum ib_gid_type gid_type, 410dbf727deSMatan Barak u16 *gid_index) 411dbf727deSMatan Barak { 412c865f246SSomnath Kotur struct find_gid_index_context context = {.vlan_id = vlan_id, 413c865f246SSomnath Kotur .gid_type = gid_type}; 414dbf727deSMatan Barak 415dbf727deSMatan Barak return ib_find_gid_by_filter(device, sgid, port_num, find_gid_index, 416dbf727deSMatan Barak &context, gid_index); 417dbf727deSMatan Barak } 418dbf727deSMatan Barak 419850d8fd7SMoni Shoua int ib_get_gids_from_rdma_hdr(const union rdma_network_hdr *hdr, 420c865f246SSomnath Kotur enum rdma_network_type net_type, 421c865f246SSomnath Kotur union ib_gid *sgid, union ib_gid *dgid) 422c865f246SSomnath Kotur { 423c865f246SSomnath Kotur struct sockaddr_in src_in; 424c865f246SSomnath Kotur struct sockaddr_in dst_in; 425c865f246SSomnath Kotur __be32 src_saddr, dst_saddr; 426c865f246SSomnath Kotur 427c865f246SSomnath Kotur if (!sgid || !dgid) 428c865f246SSomnath Kotur return -EINVAL; 429c865f246SSomnath Kotur 430c865f246SSomnath Kotur if (net_type == RDMA_NETWORK_IPV4) { 431c865f246SSomnath Kotur memcpy(&src_in.sin_addr.s_addr, 432c865f246SSomnath Kotur &hdr->roce4grh.saddr, 4); 433c865f246SSomnath Kotur memcpy(&dst_in.sin_addr.s_addr, 434c865f246SSomnath Kotur &hdr->roce4grh.daddr, 4); 435c865f246SSomnath Kotur src_saddr = src_in.sin_addr.s_addr; 436c865f246SSomnath Kotur dst_saddr = dst_in.sin_addr.s_addr; 437c865f246SSomnath Kotur ipv6_addr_set_v4mapped(src_saddr, 438c865f246SSomnath Kotur (struct in6_addr *)sgid); 439c865f246SSomnath Kotur ipv6_addr_set_v4mapped(dst_saddr, 440c865f246SSomnath Kotur (struct in6_addr *)dgid); 441c865f246SSomnath Kotur return 0; 442c865f246SSomnath Kotur } else if (net_type == RDMA_NETWORK_IPV6 || 443c865f246SSomnath Kotur net_type == RDMA_NETWORK_IB) { 444c865f246SSomnath Kotur *dgid = hdr->ibgrh.dgid; 445c865f246SSomnath Kotur *sgid = hdr->ibgrh.sgid; 446c865f246SSomnath Kotur return 0; 447c865f246SSomnath Kotur } else { 448c865f246SSomnath Kotur return -EINVAL; 449c865f246SSomnath Kotur } 450c865f246SSomnath Kotur } 451850d8fd7SMoni Shoua EXPORT_SYMBOL(ib_get_gids_from_rdma_hdr); 452c865f246SSomnath Kotur 45373cdaaeeSIra Weiny int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, 45473cdaaeeSIra Weiny const struct ib_wc *wc, const struct ib_grh *grh, 45573cdaaeeSIra Weiny struct ib_ah_attr *ah_attr) 456513789edSHal Rosenstock { 457513789edSHal Rosenstock u32 flow_class; 458513789edSHal Rosenstock u16 gid_index; 459513789edSHal Rosenstock int ret; 460c865f246SSomnath Kotur enum rdma_network_type net_type = RDMA_NETWORK_IB; 461c865f246SSomnath Kotur enum ib_gid_type gid_type = IB_GID_TYPE_IB; 462c3efe750SMatan Barak int hoplimit = 0xff; 463c865f246SSomnath Kotur union ib_gid dgid; 464c865f246SSomnath Kotur union ib_gid sgid; 465513789edSHal Rosenstock 4664e00d694SSean Hefty memset(ah_attr, 0, sizeof *ah_attr); 467227128fcSMichael Wang if (rdma_cap_eth_ah(device, port_num)) { 468c865f246SSomnath Kotur if (wc->wc_flags & IB_WC_WITH_NETWORK_HDR_TYPE) 469c865f246SSomnath Kotur net_type = wc->network_hdr_type; 470c865f246SSomnath Kotur else 471c865f246SSomnath Kotur net_type = ib_get_net_type_by_grh(device, port_num, grh); 472c865f246SSomnath Kotur gid_type = ib_network_to_gid_type(net_type); 473c865f246SSomnath Kotur } 474850d8fd7SMoni Shoua ret = ib_get_gids_from_rdma_hdr((union rdma_network_hdr *)grh, net_type, 475c865f246SSomnath Kotur &sgid, &dgid); 476c865f246SSomnath Kotur if (ret) 477c865f246SSomnath Kotur return ret; 478c865f246SSomnath Kotur 479c865f246SSomnath Kotur if (rdma_protocol_roce(device, port_num)) { 48020029832SMatan Barak int if_index = 0; 481dbf727deSMatan Barak u16 vlan_id = wc->wc_flags & IB_WC_WITH_VLAN ? 482dbf727deSMatan Barak wc->vlan_id : 0xffff; 48320029832SMatan Barak struct net_device *idev; 48420029832SMatan Barak struct net_device *resolved_dev; 485dbf727deSMatan Barak 486dd5f03beSMatan Barak if (!(wc->wc_flags & IB_WC_GRH)) 487dd5f03beSMatan Barak return -EPROTOTYPE; 488dd5f03beSMatan Barak 48920029832SMatan Barak if (!device->get_netdev) 49020029832SMatan Barak return -EOPNOTSUPP; 49120029832SMatan Barak 49220029832SMatan Barak idev = device->get_netdev(device, port_num); 49320029832SMatan Barak if (!idev) 49420029832SMatan Barak return -ENODEV; 49520029832SMatan Barak 496f7f4b23eSMatan Barak ret = rdma_addr_find_l2_eth_by_grh(&dgid, &sgid, 497dbf727deSMatan Barak ah_attr->dmac, 498dbf727deSMatan Barak wc->wc_flags & IB_WC_WITH_VLAN ? 499dbf727deSMatan Barak NULL : &vlan_id, 500c3efe750SMatan Barak &if_index, &hoplimit); 50120029832SMatan Barak if (ret) { 50220029832SMatan Barak dev_put(idev); 503dd5f03beSMatan Barak return ret; 504dd5f03beSMatan Barak } 505dbf727deSMatan Barak 50620029832SMatan Barak resolved_dev = dev_get_by_index(&init_net, if_index); 50720029832SMatan Barak if (resolved_dev->flags & IFF_LOOPBACK) { 50820029832SMatan Barak dev_put(resolved_dev); 50920029832SMatan Barak resolved_dev = idev; 51020029832SMatan Barak dev_hold(resolved_dev); 51120029832SMatan Barak } 51220029832SMatan Barak rcu_read_lock(); 51320029832SMatan Barak if (resolved_dev != idev && !rdma_is_upper_dev_rcu(idev, 51420029832SMatan Barak resolved_dev)) 51520029832SMatan Barak ret = -EHOSTUNREACH; 51620029832SMatan Barak rcu_read_unlock(); 51720029832SMatan Barak dev_put(idev); 51820029832SMatan Barak dev_put(resolved_dev); 51920029832SMatan Barak if (ret) 52020029832SMatan Barak return ret; 52120029832SMatan Barak 522dbf727deSMatan Barak ret = get_sgid_index_from_eth(device, port_num, vlan_id, 523c865f246SSomnath Kotur &dgid, gid_type, &gid_index); 524dbf727deSMatan Barak if (ret) 525dbf727deSMatan Barak return ret; 526dd5f03beSMatan Barak } 527dd5f03beSMatan Barak 5284e00d694SSean Hefty ah_attr->dlid = wc->slid; 5294e00d694SSean Hefty ah_attr->sl = wc->sl; 5304e00d694SSean Hefty ah_attr->src_path_bits = wc->dlid_path_bits; 5314e00d694SSean Hefty ah_attr->port_num = port_num; 532513789edSHal Rosenstock 533513789edSHal Rosenstock if (wc->wc_flags & IB_WC_GRH) { 5344e00d694SSean Hefty ah_attr->ah_flags = IB_AH_GRH; 535c865f246SSomnath Kotur ah_attr->grh.dgid = sgid; 536513789edSHal Rosenstock 537dbf727deSMatan Barak if (!rdma_cap_eth_ah(device, port_num)) { 538b3556005SEli Cohen if (dgid.global.interface_id != cpu_to_be64(IB_SA_WELL_KNOWN_GUID)) { 539c865f246SSomnath Kotur ret = ib_find_cached_gid_by_port(device, &dgid, 540b39ffa1dSMatan Barak IB_GID_TYPE_IB, 541dbf727deSMatan Barak port_num, NULL, 542dbf727deSMatan Barak &gid_index); 543513789edSHal Rosenstock if (ret) 5444e00d694SSean Hefty return ret; 545b3556005SEli Cohen } else { 546b3556005SEli Cohen gid_index = 0; 547b3556005SEli Cohen } 548dbf727deSMatan Barak } 549513789edSHal Rosenstock 5504e00d694SSean Hefty ah_attr->grh.sgid_index = (u8) gid_index; 551497677abSHal Rosenstock flow_class = be32_to_cpu(grh->version_tclass_flow); 5524e00d694SSean Hefty ah_attr->grh.flow_label = flow_class & 0xFFFFF; 553c3efe750SMatan Barak ah_attr->grh.hop_limit = hoplimit; 5544e00d694SSean Hefty ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; 555513789edSHal Rosenstock } 5564e00d694SSean Hefty return 0; 5574e00d694SSean Hefty } 5584e00d694SSean Hefty EXPORT_SYMBOL(ib_init_ah_from_wc); 5594e00d694SSean Hefty 56073cdaaeeSIra Weiny struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc, 56173cdaaeeSIra Weiny const struct ib_grh *grh, u8 port_num) 5624e00d694SSean Hefty { 5634e00d694SSean Hefty struct ib_ah_attr ah_attr; 5644e00d694SSean Hefty int ret; 5654e00d694SSean Hefty 5664e00d694SSean Hefty ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); 5674e00d694SSean Hefty if (ret) 5684e00d694SSean Hefty return ERR_PTR(ret); 569513789edSHal Rosenstock 570513789edSHal Rosenstock return ib_create_ah(pd, &ah_attr); 571513789edSHal Rosenstock } 572513789edSHal Rosenstock EXPORT_SYMBOL(ib_create_ah_from_wc); 573513789edSHal Rosenstock 5741da177e4SLinus Torvalds int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) 5751da177e4SLinus Torvalds { 5761da177e4SLinus Torvalds return ah->device->modify_ah ? 5771da177e4SLinus Torvalds ah->device->modify_ah(ah, ah_attr) : 5781da177e4SLinus Torvalds -ENOSYS; 5791da177e4SLinus Torvalds } 5801da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_ah); 5811da177e4SLinus Torvalds 5821da177e4SLinus Torvalds int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) 5831da177e4SLinus Torvalds { 5841da177e4SLinus Torvalds return ah->device->query_ah ? 5851da177e4SLinus Torvalds ah->device->query_ah(ah, ah_attr) : 5861da177e4SLinus Torvalds -ENOSYS; 5871da177e4SLinus Torvalds } 5881da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_ah); 5891da177e4SLinus Torvalds 5901da177e4SLinus Torvalds int ib_destroy_ah(struct ib_ah *ah) 5911da177e4SLinus Torvalds { 5921da177e4SLinus Torvalds struct ib_pd *pd; 5931da177e4SLinus Torvalds int ret; 5941da177e4SLinus Torvalds 5951da177e4SLinus Torvalds pd = ah->pd; 5961da177e4SLinus Torvalds ret = ah->device->destroy_ah(ah); 5971da177e4SLinus Torvalds if (!ret) 5981da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 5991da177e4SLinus Torvalds 6001da177e4SLinus Torvalds return ret; 6011da177e4SLinus Torvalds } 6021da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_ah); 6031da177e4SLinus Torvalds 604d41fcc67SRoland Dreier /* Shared receive queues */ 605d41fcc67SRoland Dreier 606d41fcc67SRoland Dreier struct ib_srq *ib_create_srq(struct ib_pd *pd, 607d41fcc67SRoland Dreier struct ib_srq_init_attr *srq_init_attr) 608d41fcc67SRoland Dreier { 609d41fcc67SRoland Dreier struct ib_srq *srq; 610d41fcc67SRoland Dreier 611d41fcc67SRoland Dreier if (!pd->device->create_srq) 612d41fcc67SRoland Dreier return ERR_PTR(-ENOSYS); 613d41fcc67SRoland Dreier 614d41fcc67SRoland Dreier srq = pd->device->create_srq(pd, srq_init_attr, NULL); 615d41fcc67SRoland Dreier 616d41fcc67SRoland Dreier if (!IS_ERR(srq)) { 617d41fcc67SRoland Dreier srq->device = pd->device; 618d41fcc67SRoland Dreier srq->pd = pd; 619d41fcc67SRoland Dreier srq->uobject = NULL; 620d41fcc67SRoland Dreier srq->event_handler = srq_init_attr->event_handler; 621d41fcc67SRoland Dreier srq->srq_context = srq_init_attr->srq_context; 62296104edaSSean Hefty srq->srq_type = srq_init_attr->srq_type; 623418d5130SSean Hefty if (srq->srq_type == IB_SRQT_XRC) { 624418d5130SSean Hefty srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; 625418d5130SSean Hefty srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq; 626418d5130SSean Hefty atomic_inc(&srq->ext.xrc.xrcd->usecnt); 627418d5130SSean Hefty atomic_inc(&srq->ext.xrc.cq->usecnt); 628418d5130SSean Hefty } 629d41fcc67SRoland Dreier atomic_inc(&pd->usecnt); 630d41fcc67SRoland Dreier atomic_set(&srq->usecnt, 0); 631d41fcc67SRoland Dreier } 632d41fcc67SRoland Dreier 633d41fcc67SRoland Dreier return srq; 634d41fcc67SRoland Dreier } 635d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_create_srq); 636d41fcc67SRoland Dreier 637d41fcc67SRoland Dreier int ib_modify_srq(struct ib_srq *srq, 638d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr, 639d41fcc67SRoland Dreier enum ib_srq_attr_mask srq_attr_mask) 640d41fcc67SRoland Dreier { 6417ce5eacbSDotan Barak return srq->device->modify_srq ? 6427ce5eacbSDotan Barak srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : 6437ce5eacbSDotan Barak -ENOSYS; 644d41fcc67SRoland Dreier } 645d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_modify_srq); 646d41fcc67SRoland Dreier 647d41fcc67SRoland Dreier int ib_query_srq(struct ib_srq *srq, 648d41fcc67SRoland Dreier struct ib_srq_attr *srq_attr) 649d41fcc67SRoland Dreier { 650d41fcc67SRoland Dreier return srq->device->query_srq ? 651d41fcc67SRoland Dreier srq->device->query_srq(srq, srq_attr) : -ENOSYS; 652d41fcc67SRoland Dreier } 653d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_query_srq); 654d41fcc67SRoland Dreier 655d41fcc67SRoland Dreier int ib_destroy_srq(struct ib_srq *srq) 656d41fcc67SRoland Dreier { 657d41fcc67SRoland Dreier struct ib_pd *pd; 658418d5130SSean Hefty enum ib_srq_type srq_type; 659418d5130SSean Hefty struct ib_xrcd *uninitialized_var(xrcd); 660418d5130SSean Hefty struct ib_cq *uninitialized_var(cq); 661d41fcc67SRoland Dreier int ret; 662d41fcc67SRoland Dreier 663d41fcc67SRoland Dreier if (atomic_read(&srq->usecnt)) 664d41fcc67SRoland Dreier return -EBUSY; 665d41fcc67SRoland Dreier 666d41fcc67SRoland Dreier pd = srq->pd; 667418d5130SSean Hefty srq_type = srq->srq_type; 668418d5130SSean Hefty if (srq_type == IB_SRQT_XRC) { 669418d5130SSean Hefty xrcd = srq->ext.xrc.xrcd; 670418d5130SSean Hefty cq = srq->ext.xrc.cq; 671418d5130SSean Hefty } 672d41fcc67SRoland Dreier 673d41fcc67SRoland Dreier ret = srq->device->destroy_srq(srq); 674418d5130SSean Hefty if (!ret) { 675d41fcc67SRoland Dreier atomic_dec(&pd->usecnt); 676418d5130SSean Hefty if (srq_type == IB_SRQT_XRC) { 677418d5130SSean Hefty atomic_dec(&xrcd->usecnt); 678418d5130SSean Hefty atomic_dec(&cq->usecnt); 679418d5130SSean Hefty } 680418d5130SSean Hefty } 681d41fcc67SRoland Dreier 682d41fcc67SRoland Dreier return ret; 683d41fcc67SRoland Dreier } 684d41fcc67SRoland Dreier EXPORT_SYMBOL(ib_destroy_srq); 685d41fcc67SRoland Dreier 6861da177e4SLinus Torvalds /* Queue pairs */ 6871da177e4SLinus Torvalds 6880e0ec7e0SSean Hefty static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) 6890e0ec7e0SSean Hefty { 6900e0ec7e0SSean Hefty struct ib_qp *qp = context; 69173c40c61SYishai Hadas unsigned long flags; 6920e0ec7e0SSean Hefty 69373c40c61SYishai Hadas spin_lock_irqsave(&qp->device->event_handler_lock, flags); 6940e0ec7e0SSean Hefty list_for_each_entry(event->element.qp, &qp->open_list, open_list) 695eec9e29fSShlomo Pongratz if (event->element.qp->event_handler) 6960e0ec7e0SSean Hefty event->element.qp->event_handler(event, event->element.qp->qp_context); 69773c40c61SYishai Hadas spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); 6980e0ec7e0SSean Hefty } 6990e0ec7e0SSean Hefty 700d3d72d90SSean Hefty static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) 701d3d72d90SSean Hefty { 702d3d72d90SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 703d3d72d90SSean Hefty list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); 704d3d72d90SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 705d3d72d90SSean Hefty } 706d3d72d90SSean Hefty 7070e0ec7e0SSean Hefty static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, 7080e0ec7e0SSean Hefty void (*event_handler)(struct ib_event *, void *), 7090e0ec7e0SSean Hefty void *qp_context) 710d3d72d90SSean Hefty { 7110e0ec7e0SSean Hefty struct ib_qp *qp; 7120e0ec7e0SSean Hefty unsigned long flags; 7130e0ec7e0SSean Hefty 7140e0ec7e0SSean Hefty qp = kzalloc(sizeof *qp, GFP_KERNEL); 7150e0ec7e0SSean Hefty if (!qp) 7160e0ec7e0SSean Hefty return ERR_PTR(-ENOMEM); 7170e0ec7e0SSean Hefty 7180e0ec7e0SSean Hefty qp->real_qp = real_qp; 7190e0ec7e0SSean Hefty atomic_inc(&real_qp->usecnt); 7200e0ec7e0SSean Hefty qp->device = real_qp->device; 7210e0ec7e0SSean Hefty qp->event_handler = event_handler; 7220e0ec7e0SSean Hefty qp->qp_context = qp_context; 7230e0ec7e0SSean Hefty qp->qp_num = real_qp->qp_num; 7240e0ec7e0SSean Hefty qp->qp_type = real_qp->qp_type; 7250e0ec7e0SSean Hefty 7260e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 7270e0ec7e0SSean Hefty list_add(&qp->open_list, &real_qp->open_list); 7280e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 7290e0ec7e0SSean Hefty 7300e0ec7e0SSean Hefty return qp; 731d3d72d90SSean Hefty } 732d3d72d90SSean Hefty 7330e0ec7e0SSean Hefty struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, 7340e0ec7e0SSean Hefty struct ib_qp_open_attr *qp_open_attr) 7350e0ec7e0SSean Hefty { 7360e0ec7e0SSean Hefty struct ib_qp *qp, *real_qp; 7370e0ec7e0SSean Hefty 7380e0ec7e0SSean Hefty if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) 7390e0ec7e0SSean Hefty return ERR_PTR(-EINVAL); 7400e0ec7e0SSean Hefty 7410e0ec7e0SSean Hefty qp = ERR_PTR(-EINVAL); 7420e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 7430e0ec7e0SSean Hefty list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { 7440e0ec7e0SSean Hefty if (real_qp->qp_num == qp_open_attr->qp_num) { 7450e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, 7460e0ec7e0SSean Hefty qp_open_attr->qp_context); 7470e0ec7e0SSean Hefty break; 7480e0ec7e0SSean Hefty } 7490e0ec7e0SSean Hefty } 7500e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 7510e0ec7e0SSean Hefty return qp; 7520e0ec7e0SSean Hefty } 7530e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_open_qp); 7540e0ec7e0SSean Hefty 75504c41bf3SChristoph Hellwig static struct ib_qp *ib_create_xrc_qp(struct ib_qp *qp, 7561da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 7571da177e4SLinus Torvalds { 75804c41bf3SChristoph Hellwig struct ib_qp *real_qp = qp; 7591da177e4SLinus Torvalds 7600e0ec7e0SSean Hefty qp->event_handler = __ib_shared_qp_event_handler; 7610e0ec7e0SSean Hefty qp->qp_context = qp; 762b42b63cfSSean Hefty qp->pd = NULL; 763b42b63cfSSean Hefty qp->send_cq = qp->recv_cq = NULL; 764b42b63cfSSean Hefty qp->srq = NULL; 765b42b63cfSSean Hefty qp->xrcd = qp_init_attr->xrcd; 766b42b63cfSSean Hefty atomic_inc(&qp_init_attr->xrcd->usecnt); 7670e0ec7e0SSean Hefty INIT_LIST_HEAD(&qp->open_list); 7680e0ec7e0SSean Hefty 7690e0ec7e0SSean Hefty qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, 7700e0ec7e0SSean Hefty qp_init_attr->qp_context); 7710e0ec7e0SSean Hefty if (!IS_ERR(qp)) 7720e0ec7e0SSean Hefty __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); 7730e0ec7e0SSean Hefty else 7740e0ec7e0SSean Hefty real_qp->device->destroy_qp(real_qp); 77504c41bf3SChristoph Hellwig return qp; 77604c41bf3SChristoph Hellwig } 77704c41bf3SChristoph Hellwig 77804c41bf3SChristoph Hellwig struct ib_qp *ib_create_qp(struct ib_pd *pd, 77904c41bf3SChristoph Hellwig struct ib_qp_init_attr *qp_init_attr) 78004c41bf3SChristoph Hellwig { 78104c41bf3SChristoph Hellwig struct ib_device *device = pd ? pd->device : qp_init_attr->xrcd->device; 78204c41bf3SChristoph Hellwig struct ib_qp *qp; 783a060b562SChristoph Hellwig int ret; 784a060b562SChristoph Hellwig 785a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl && 786a9017e23SYishai Hadas (qp_init_attr->recv_cq || 787a9017e23SYishai Hadas qp_init_attr->srq || qp_init_attr->cap.max_recv_wr || 788a9017e23SYishai Hadas qp_init_attr->cap.max_recv_sge)) 789a9017e23SYishai Hadas return ERR_PTR(-EINVAL); 790a9017e23SYishai Hadas 791a060b562SChristoph Hellwig /* 792a060b562SChristoph Hellwig * If the callers is using the RDMA API calculate the resources 793a060b562SChristoph Hellwig * needed for the RDMA READ/WRITE operations. 794a060b562SChristoph Hellwig * 795a060b562SChristoph Hellwig * Note that these callers need to pass in a port number. 796a060b562SChristoph Hellwig */ 797a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) 798a060b562SChristoph Hellwig rdma_rw_init_qp(device, qp_init_attr); 79904c41bf3SChristoph Hellwig 80004c41bf3SChristoph Hellwig qp = device->create_qp(pd, qp_init_attr, NULL); 80104c41bf3SChristoph Hellwig if (IS_ERR(qp)) 80204c41bf3SChristoph Hellwig return qp; 80304c41bf3SChristoph Hellwig 80404c41bf3SChristoph Hellwig qp->device = device; 80504c41bf3SChristoph Hellwig qp->real_qp = qp; 80604c41bf3SChristoph Hellwig qp->uobject = NULL; 80704c41bf3SChristoph Hellwig qp->qp_type = qp_init_attr->qp_type; 808a9017e23SYishai Hadas qp->rwq_ind_tbl = qp_init_attr->rwq_ind_tbl; 80904c41bf3SChristoph Hellwig 81004c41bf3SChristoph Hellwig atomic_set(&qp->usecnt, 0); 811fffb0383SChristoph Hellwig qp->mrs_used = 0; 812fffb0383SChristoph Hellwig spin_lock_init(&qp->mr_lock); 813a060b562SChristoph Hellwig INIT_LIST_HEAD(&qp->rdma_mrs); 8140e353e34SChristoph Hellwig INIT_LIST_HEAD(&qp->sig_mrs); 815fffb0383SChristoph Hellwig 81604c41bf3SChristoph Hellwig if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) 81704c41bf3SChristoph Hellwig return ib_create_xrc_qp(qp, qp_init_attr); 81804c41bf3SChristoph Hellwig 8191da177e4SLinus Torvalds qp->event_handler = qp_init_attr->event_handler; 8201da177e4SLinus Torvalds qp->qp_context = qp_init_attr->qp_context; 821b42b63cfSSean Hefty if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { 822b42b63cfSSean Hefty qp->recv_cq = NULL; 823b42b63cfSSean Hefty qp->srq = NULL; 824b42b63cfSSean Hefty } else { 825b42b63cfSSean Hefty qp->recv_cq = qp_init_attr->recv_cq; 826a9017e23SYishai Hadas if (qp_init_attr->recv_cq) 827b42b63cfSSean Hefty atomic_inc(&qp_init_attr->recv_cq->usecnt); 828b42b63cfSSean Hefty qp->srq = qp_init_attr->srq; 829b42b63cfSSean Hefty if (qp->srq) 830b42b63cfSSean Hefty atomic_inc(&qp_init_attr->srq->usecnt); 831b42b63cfSSean Hefty } 832b42b63cfSSean Hefty 8331da177e4SLinus Torvalds qp->pd = pd; 8341da177e4SLinus Torvalds qp->send_cq = qp_init_attr->send_cq; 835b42b63cfSSean Hefty qp->xrcd = NULL; 836b42b63cfSSean Hefty 8371da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 838a9017e23SYishai Hadas if (qp_init_attr->send_cq) 8391da177e4SLinus Torvalds atomic_inc(&qp_init_attr->send_cq->usecnt); 840a9017e23SYishai Hadas if (qp_init_attr->rwq_ind_tbl) 841a9017e23SYishai Hadas atomic_inc(&qp->rwq_ind_tbl->usecnt); 842a060b562SChristoph Hellwig 843a060b562SChristoph Hellwig if (qp_init_attr->cap.max_rdma_ctxs) { 844a060b562SChristoph Hellwig ret = rdma_rw_init_mrs(qp, qp_init_attr); 845a060b562SChristoph Hellwig if (ret) { 846a060b562SChristoph Hellwig pr_err("failed to init MR pool ret= %d\n", ret); 847a060b562SChristoph Hellwig ib_destroy_qp(qp); 848b6bc1c73SSteve Wise return ERR_PTR(ret); 849a060b562SChristoph Hellwig } 850a060b562SChristoph Hellwig } 851a060b562SChristoph Hellwig 852632bc3f6SBart Van Assche /* 853632bc3f6SBart Van Assche * Note: all hw drivers guarantee that max_send_sge is lower than 854632bc3f6SBart Van Assche * the device RDMA WRITE SGE limit but not all hw drivers ensure that 855632bc3f6SBart Van Assche * max_send_sge <= max_sge_rd. 856632bc3f6SBart Van Assche */ 857632bc3f6SBart Van Assche qp->max_write_sge = qp_init_attr->cap.max_send_sge; 858632bc3f6SBart Van Assche qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge, 859632bc3f6SBart Van Assche device->attrs.max_sge_rd); 860632bc3f6SBart Van Assche 8611da177e4SLinus Torvalds return qp; 8621da177e4SLinus Torvalds } 8631da177e4SLinus Torvalds EXPORT_SYMBOL(ib_create_qp); 8641da177e4SLinus Torvalds 8658a51866fSRoland Dreier static const struct { 8668a51866fSRoland Dreier int valid; 867b42b63cfSSean Hefty enum ib_qp_attr_mask req_param[IB_QPT_MAX]; 868b42b63cfSSean Hefty enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; 8698a51866fSRoland Dreier } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { 8708a51866fSRoland Dreier [IB_QPS_RESET] = { 8718a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 8728a51866fSRoland Dreier [IB_QPS_INIT] = { 8738a51866fSRoland Dreier .valid = 1, 8748a51866fSRoland Dreier .req_param = { 8758a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 8768a51866fSRoland Dreier IB_QP_PORT | 8778a51866fSRoland Dreier IB_QP_QKEY), 878c938a616SOr Gerlitz [IB_QPT_RAW_PACKET] = IB_QP_PORT, 8798a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 8808a51866fSRoland Dreier IB_QP_PORT | 8818a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 8828a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 8838a51866fSRoland Dreier IB_QP_PORT | 8848a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 885b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 886b42b63cfSSean Hefty IB_QP_PORT | 887b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 888b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 889b42b63cfSSean Hefty IB_QP_PORT | 890b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 8918a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 8928a51866fSRoland Dreier IB_QP_QKEY), 8938a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 8948a51866fSRoland Dreier IB_QP_QKEY), 8958a51866fSRoland Dreier } 8968a51866fSRoland Dreier }, 8978a51866fSRoland Dreier }, 8988a51866fSRoland Dreier [IB_QPS_INIT] = { 8998a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 9008a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 9018a51866fSRoland Dreier [IB_QPS_INIT] = { 9028a51866fSRoland Dreier .valid = 1, 9038a51866fSRoland Dreier .opt_param = { 9048a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 9058a51866fSRoland Dreier IB_QP_PORT | 9068a51866fSRoland Dreier IB_QP_QKEY), 9078a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_PKEY_INDEX | 9088a51866fSRoland Dreier IB_QP_PORT | 9098a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 9108a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PKEY_INDEX | 9118a51866fSRoland Dreier IB_QP_PORT | 9128a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 913b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | 914b42b63cfSSean Hefty IB_QP_PORT | 915b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 916b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | 917b42b63cfSSean Hefty IB_QP_PORT | 918b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS), 9198a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 9208a51866fSRoland Dreier IB_QP_QKEY), 9218a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 9228a51866fSRoland Dreier IB_QP_QKEY), 9238a51866fSRoland Dreier } 9248a51866fSRoland Dreier }, 9258a51866fSRoland Dreier [IB_QPS_RTR] = { 9268a51866fSRoland Dreier .valid = 1, 9278a51866fSRoland Dreier .req_param = { 9288a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 9298a51866fSRoland Dreier IB_QP_PATH_MTU | 9308a51866fSRoland Dreier IB_QP_DEST_QPN | 9318a51866fSRoland Dreier IB_QP_RQ_PSN), 9328a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_AV | 9338a51866fSRoland Dreier IB_QP_PATH_MTU | 9348a51866fSRoland Dreier IB_QP_DEST_QPN | 9358a51866fSRoland Dreier IB_QP_RQ_PSN | 9368a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 9378a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 938b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_AV | 939b42b63cfSSean Hefty IB_QP_PATH_MTU | 940b42b63cfSSean Hefty IB_QP_DEST_QPN | 941b42b63cfSSean Hefty IB_QP_RQ_PSN), 942b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_AV | 943b42b63cfSSean Hefty IB_QP_PATH_MTU | 944b42b63cfSSean Hefty IB_QP_DEST_QPN | 945b42b63cfSSean Hefty IB_QP_RQ_PSN | 946b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 947b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 9488a51866fSRoland Dreier }, 9498a51866fSRoland Dreier .opt_param = { 9508a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 9518a51866fSRoland Dreier IB_QP_QKEY), 9528a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_ALT_PATH | 9538a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 9548a51866fSRoland Dreier IB_QP_PKEY_INDEX), 9558a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_ALT_PATH | 9568a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 9578a51866fSRoland Dreier IB_QP_PKEY_INDEX), 958b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | 959b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 960b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 961b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | 962b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 963b42b63cfSSean Hefty IB_QP_PKEY_INDEX), 9648a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 9658a51866fSRoland Dreier IB_QP_QKEY), 9668a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 9678a51866fSRoland Dreier IB_QP_QKEY), 968dd5f03beSMatan Barak }, 969dbf727deSMatan Barak }, 9708a51866fSRoland Dreier }, 9718a51866fSRoland Dreier [IB_QPS_RTR] = { 9728a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 9738a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 9748a51866fSRoland Dreier [IB_QPS_RTS] = { 9758a51866fSRoland Dreier .valid = 1, 9768a51866fSRoland Dreier .req_param = { 9778a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_SQ_PSN, 9788a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_SQ_PSN, 9798a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_TIMEOUT | 9808a51866fSRoland Dreier IB_QP_RETRY_CNT | 9818a51866fSRoland Dreier IB_QP_RNR_RETRY | 9828a51866fSRoland Dreier IB_QP_SQ_PSN | 9838a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC), 984b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | 985b42b63cfSSean Hefty IB_QP_RETRY_CNT | 986b42b63cfSSean Hefty IB_QP_RNR_RETRY | 987b42b63cfSSean Hefty IB_QP_SQ_PSN | 988b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC), 989b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | 990b42b63cfSSean Hefty IB_QP_SQ_PSN), 9918a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_SQ_PSN, 9928a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_SQ_PSN, 9938a51866fSRoland Dreier }, 9948a51866fSRoland Dreier .opt_param = { 9958a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 9968a51866fSRoland Dreier IB_QP_QKEY), 9978a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 9988a51866fSRoland Dreier IB_QP_ALT_PATH | 9998a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10008a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 10018a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 10028a51866fSRoland Dreier IB_QP_ALT_PATH | 10038a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10048a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 10058a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1006b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1007b42b63cfSSean Hefty IB_QP_ALT_PATH | 1008b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1009b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1010b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1011b42b63cfSSean Hefty IB_QP_ALT_PATH | 1012b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1013b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1014b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 10158a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 10168a51866fSRoland Dreier IB_QP_QKEY), 10178a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 10188a51866fSRoland Dreier IB_QP_QKEY), 1019528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 10208a51866fSRoland Dreier } 10218a51866fSRoland Dreier } 10228a51866fSRoland Dreier }, 10238a51866fSRoland Dreier [IB_QPS_RTS] = { 10248a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 10258a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 10268a51866fSRoland Dreier [IB_QPS_RTS] = { 10278a51866fSRoland Dreier .valid = 1, 10288a51866fSRoland Dreier .opt_param = { 10298a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 10308a51866fSRoland Dreier IB_QP_QKEY), 10314546d31dSDotan Barak [IB_QPT_UC] = (IB_QP_CUR_STATE | 10324546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 10338a51866fSRoland Dreier IB_QP_ALT_PATH | 10348a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 10354546d31dSDotan Barak [IB_QPT_RC] = (IB_QP_CUR_STATE | 10364546d31dSDotan Barak IB_QP_ACCESS_FLAGS | 10378a51866fSRoland Dreier IB_QP_ALT_PATH | 10388a51866fSRoland Dreier IB_QP_PATH_MIG_STATE | 10398a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER), 1040b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1041b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1042b42b63cfSSean Hefty IB_QP_ALT_PATH | 1043b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1044b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1045b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1046b42b63cfSSean Hefty IB_QP_ALT_PATH | 1047b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE | 1048b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER), 10498a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 10508a51866fSRoland Dreier IB_QP_QKEY), 10518a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 10528a51866fSRoland Dreier IB_QP_QKEY), 1053528e5a1bSBodong Wang [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT, 10548a51866fSRoland Dreier } 10558a51866fSRoland Dreier }, 10568a51866fSRoland Dreier [IB_QPS_SQD] = { 10578a51866fSRoland Dreier .valid = 1, 10588a51866fSRoland Dreier .opt_param = { 10598a51866fSRoland Dreier [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, 10608a51866fSRoland Dreier [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 10618a51866fSRoland Dreier [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1062b42b63cfSSean Hefty [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 1063b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ 10648a51866fSRoland Dreier [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, 10658a51866fSRoland Dreier [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY 10668a51866fSRoland Dreier } 10678a51866fSRoland Dreier }, 10688a51866fSRoland Dreier }, 10698a51866fSRoland Dreier [IB_QPS_SQD] = { 10708a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 10718a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 10728a51866fSRoland Dreier [IB_QPS_RTS] = { 10738a51866fSRoland Dreier .valid = 1, 10748a51866fSRoland Dreier .opt_param = { 10758a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 10768a51866fSRoland Dreier IB_QP_QKEY), 10778a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 10788a51866fSRoland Dreier IB_QP_ALT_PATH | 10798a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10808a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 10818a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_CUR_STATE | 10828a51866fSRoland Dreier IB_QP_ALT_PATH | 10838a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 10848a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 10858a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1086b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | 1087b42b63cfSSean Hefty IB_QP_ALT_PATH | 1088b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1089b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1090b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | 1091b42b63cfSSean Hefty IB_QP_ALT_PATH | 1092b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1093b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1094b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 10958a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 10968a51866fSRoland Dreier IB_QP_QKEY), 10978a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 10988a51866fSRoland Dreier IB_QP_QKEY), 10998a51866fSRoland Dreier } 11008a51866fSRoland Dreier }, 11018a51866fSRoland Dreier [IB_QPS_SQD] = { 11028a51866fSRoland Dreier .valid = 1, 11038a51866fSRoland Dreier .opt_param = { 11048a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_PKEY_INDEX | 11058a51866fSRoland Dreier IB_QP_QKEY), 11068a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_AV | 11078a51866fSRoland Dreier IB_QP_ALT_PATH | 11088a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 11098a51866fSRoland Dreier IB_QP_PKEY_INDEX | 11108a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 11118a51866fSRoland Dreier [IB_QPT_RC] = (IB_QP_PORT | 11128a51866fSRoland Dreier IB_QP_AV | 11138a51866fSRoland Dreier IB_QP_TIMEOUT | 11148a51866fSRoland Dreier IB_QP_RETRY_CNT | 11158a51866fSRoland Dreier IB_QP_RNR_RETRY | 11168a51866fSRoland Dreier IB_QP_MAX_QP_RD_ATOMIC | 11178a51866fSRoland Dreier IB_QP_MAX_DEST_RD_ATOMIC | 11188a51866fSRoland Dreier IB_QP_ALT_PATH | 11198a51866fSRoland Dreier IB_QP_ACCESS_FLAGS | 11208a51866fSRoland Dreier IB_QP_PKEY_INDEX | 11218a51866fSRoland Dreier IB_QP_MIN_RNR_TIMER | 11228a51866fSRoland Dreier IB_QP_PATH_MIG_STATE), 1123b42b63cfSSean Hefty [IB_QPT_XRC_INI] = (IB_QP_PORT | 1124b42b63cfSSean Hefty IB_QP_AV | 1125b42b63cfSSean Hefty IB_QP_TIMEOUT | 1126b42b63cfSSean Hefty IB_QP_RETRY_CNT | 1127b42b63cfSSean Hefty IB_QP_RNR_RETRY | 1128b42b63cfSSean Hefty IB_QP_MAX_QP_RD_ATOMIC | 1129b42b63cfSSean Hefty IB_QP_ALT_PATH | 1130b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1131b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1132b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 1133b42b63cfSSean Hefty [IB_QPT_XRC_TGT] = (IB_QP_PORT | 1134b42b63cfSSean Hefty IB_QP_AV | 1135b42b63cfSSean Hefty IB_QP_TIMEOUT | 1136b42b63cfSSean Hefty IB_QP_MAX_DEST_RD_ATOMIC | 1137b42b63cfSSean Hefty IB_QP_ALT_PATH | 1138b42b63cfSSean Hefty IB_QP_ACCESS_FLAGS | 1139b42b63cfSSean Hefty IB_QP_PKEY_INDEX | 1140b42b63cfSSean Hefty IB_QP_MIN_RNR_TIMER | 1141b42b63cfSSean Hefty IB_QP_PATH_MIG_STATE), 11428a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | 11438a51866fSRoland Dreier IB_QP_QKEY), 11448a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | 11458a51866fSRoland Dreier IB_QP_QKEY), 11468a51866fSRoland Dreier } 11478a51866fSRoland Dreier } 11488a51866fSRoland Dreier }, 11498a51866fSRoland Dreier [IB_QPS_SQE] = { 11508a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 11518a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 }, 11528a51866fSRoland Dreier [IB_QPS_RTS] = { 11538a51866fSRoland Dreier .valid = 1, 11548a51866fSRoland Dreier .opt_param = { 11558a51866fSRoland Dreier [IB_QPT_UD] = (IB_QP_CUR_STATE | 11568a51866fSRoland Dreier IB_QP_QKEY), 11578a51866fSRoland Dreier [IB_QPT_UC] = (IB_QP_CUR_STATE | 11588a51866fSRoland Dreier IB_QP_ACCESS_FLAGS), 11598a51866fSRoland Dreier [IB_QPT_SMI] = (IB_QP_CUR_STATE | 11608a51866fSRoland Dreier IB_QP_QKEY), 11618a51866fSRoland Dreier [IB_QPT_GSI] = (IB_QP_CUR_STATE | 11628a51866fSRoland Dreier IB_QP_QKEY), 11638a51866fSRoland Dreier } 11648a51866fSRoland Dreier } 11658a51866fSRoland Dreier }, 11668a51866fSRoland Dreier [IB_QPS_ERR] = { 11678a51866fSRoland Dreier [IB_QPS_RESET] = { .valid = 1 }, 11688a51866fSRoland Dreier [IB_QPS_ERR] = { .valid = 1 } 11698a51866fSRoland Dreier } 11708a51866fSRoland Dreier }; 11718a51866fSRoland Dreier 11728a51866fSRoland Dreier int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, 1173dd5f03beSMatan Barak enum ib_qp_type type, enum ib_qp_attr_mask mask, 1174dd5f03beSMatan Barak enum rdma_link_layer ll) 11758a51866fSRoland Dreier { 11768a51866fSRoland Dreier enum ib_qp_attr_mask req_param, opt_param; 11778a51866fSRoland Dreier 11788a51866fSRoland Dreier if (cur_state < 0 || cur_state > IB_QPS_ERR || 11798a51866fSRoland Dreier next_state < 0 || next_state > IB_QPS_ERR) 11808a51866fSRoland Dreier return 0; 11818a51866fSRoland Dreier 11828a51866fSRoland Dreier if (mask & IB_QP_CUR_STATE && 11838a51866fSRoland Dreier cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && 11848a51866fSRoland Dreier cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) 11858a51866fSRoland Dreier return 0; 11868a51866fSRoland Dreier 11878a51866fSRoland Dreier if (!qp_state_table[cur_state][next_state].valid) 11888a51866fSRoland Dreier return 0; 11898a51866fSRoland Dreier 11908a51866fSRoland Dreier req_param = qp_state_table[cur_state][next_state].req_param[type]; 11918a51866fSRoland Dreier opt_param = qp_state_table[cur_state][next_state].opt_param[type]; 11928a51866fSRoland Dreier 11938a51866fSRoland Dreier if ((mask & req_param) != req_param) 11948a51866fSRoland Dreier return 0; 11958a51866fSRoland Dreier 11968a51866fSRoland Dreier if (mask & ~(req_param | opt_param | IB_QP_STATE)) 11978a51866fSRoland Dreier return 0; 11988a51866fSRoland Dreier 11998a51866fSRoland Dreier return 1; 12008a51866fSRoland Dreier } 12018a51866fSRoland Dreier EXPORT_SYMBOL(ib_modify_qp_is_ok); 12028a51866fSRoland Dreier 1203c90ea9d8SMoni Shoua int ib_resolve_eth_dmac(struct ib_device *device, 1204c90ea9d8SMoni Shoua struct ib_ah_attr *ah_attr) 1205ed4c54e5SOr Gerlitz { 1206ed4c54e5SOr Gerlitz int ret = 0; 1207ed4c54e5SOr Gerlitz 1208c90ea9d8SMoni Shoua if (ah_attr->port_num < rdma_start_port(device) || 1209c90ea9d8SMoni Shoua ah_attr->port_num > rdma_end_port(device)) 1210dbf727deSMatan Barak return -EINVAL; 1211dbf727deSMatan Barak 1212c90ea9d8SMoni Shoua if (!rdma_cap_eth_ah(device, ah_attr->port_num)) 1213dbf727deSMatan Barak return 0; 1214dbf727deSMatan Barak 1215c90ea9d8SMoni Shoua if (rdma_link_local_addr((struct in6_addr *)ah_attr->grh.dgid.raw)) { 1216c90ea9d8SMoni Shoua rdma_get_ll_mac((struct in6_addr *)ah_attr->grh.dgid.raw, 1217c90ea9d8SMoni Shoua ah_attr->dmac); 1218ed4c54e5SOr Gerlitz } else { 1219dbf727deSMatan Barak union ib_gid sgid; 1220dbf727deSMatan Barak struct ib_gid_attr sgid_attr; 1221dbf727deSMatan Barak int ifindex; 1222c3efe750SMatan Barak int hop_limit; 1223dbf727deSMatan Barak 1224c90ea9d8SMoni Shoua ret = ib_query_gid(device, 1225c90ea9d8SMoni Shoua ah_attr->port_num, 1226c90ea9d8SMoni Shoua ah_attr->grh.sgid_index, 1227dbf727deSMatan Barak &sgid, &sgid_attr); 1228dbf727deSMatan Barak 1229dbf727deSMatan Barak if (ret || !sgid_attr.ndev) { 1230dbf727deSMatan Barak if (!ret) 1231dbf727deSMatan Barak ret = -ENXIO; 1232ed4c54e5SOr Gerlitz goto out; 1233ed4c54e5SOr Gerlitz } 1234dbf727deSMatan Barak 1235dbf727deSMatan Barak ifindex = sgid_attr.ndev->ifindex; 1236dbf727deSMatan Barak 1237f7f4b23eSMatan Barak ret = rdma_addr_find_l2_eth_by_grh(&sgid, 1238c90ea9d8SMoni Shoua &ah_attr->grh.dgid, 1239c90ea9d8SMoni Shoua ah_attr->dmac, 1240c3efe750SMatan Barak NULL, &ifindex, &hop_limit); 1241dbf727deSMatan Barak 1242dbf727deSMatan Barak dev_put(sgid_attr.ndev); 1243c3efe750SMatan Barak 1244c90ea9d8SMoni Shoua ah_attr->grh.hop_limit = hop_limit; 1245ed4c54e5SOr Gerlitz } 1246ed4c54e5SOr Gerlitz out: 1247ed4c54e5SOr Gerlitz return ret; 1248ed4c54e5SOr Gerlitz } 1249dbf727deSMatan Barak EXPORT_SYMBOL(ib_resolve_eth_dmac); 1250ed4c54e5SOr Gerlitz 12511da177e4SLinus Torvalds int ib_modify_qp(struct ib_qp *qp, 12521da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 12531da177e4SLinus Torvalds int qp_attr_mask) 12541da177e4SLinus Torvalds { 1255c90ea9d8SMoni Shoua 1256c90ea9d8SMoni Shoua if (qp_attr_mask & IB_QP_AV) { 1257ed4c54e5SOr Gerlitz int ret; 1258ed4c54e5SOr Gerlitz 1259c90ea9d8SMoni Shoua ret = ib_resolve_eth_dmac(qp->device, &qp_attr->ah_attr); 1260ed4c54e5SOr Gerlitz if (ret) 1261ed4c54e5SOr Gerlitz return ret; 1262c90ea9d8SMoni Shoua } 1263ed4c54e5SOr Gerlitz 12640e0ec7e0SSean Hefty return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); 12651da177e4SLinus Torvalds } 12661da177e4SLinus Torvalds EXPORT_SYMBOL(ib_modify_qp); 12671da177e4SLinus Torvalds 12681da177e4SLinus Torvalds int ib_query_qp(struct ib_qp *qp, 12691da177e4SLinus Torvalds struct ib_qp_attr *qp_attr, 12701da177e4SLinus Torvalds int qp_attr_mask, 12711da177e4SLinus Torvalds struct ib_qp_init_attr *qp_init_attr) 12721da177e4SLinus Torvalds { 12731da177e4SLinus Torvalds return qp->device->query_qp ? 12740e0ec7e0SSean Hefty qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : 12751da177e4SLinus Torvalds -ENOSYS; 12761da177e4SLinus Torvalds } 12771da177e4SLinus Torvalds EXPORT_SYMBOL(ib_query_qp); 12781da177e4SLinus Torvalds 12790e0ec7e0SSean Hefty int ib_close_qp(struct ib_qp *qp) 12800e0ec7e0SSean Hefty { 12810e0ec7e0SSean Hefty struct ib_qp *real_qp; 12820e0ec7e0SSean Hefty unsigned long flags; 12830e0ec7e0SSean Hefty 12840e0ec7e0SSean Hefty real_qp = qp->real_qp; 12850e0ec7e0SSean Hefty if (real_qp == qp) 12860e0ec7e0SSean Hefty return -EINVAL; 12870e0ec7e0SSean Hefty 12880e0ec7e0SSean Hefty spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); 12890e0ec7e0SSean Hefty list_del(&qp->open_list); 12900e0ec7e0SSean Hefty spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); 12910e0ec7e0SSean Hefty 12920e0ec7e0SSean Hefty atomic_dec(&real_qp->usecnt); 12930e0ec7e0SSean Hefty kfree(qp); 12940e0ec7e0SSean Hefty 12950e0ec7e0SSean Hefty return 0; 12960e0ec7e0SSean Hefty } 12970e0ec7e0SSean Hefty EXPORT_SYMBOL(ib_close_qp); 12980e0ec7e0SSean Hefty 12990e0ec7e0SSean Hefty static int __ib_destroy_shared_qp(struct ib_qp *qp) 13000e0ec7e0SSean Hefty { 13010e0ec7e0SSean Hefty struct ib_xrcd *xrcd; 13020e0ec7e0SSean Hefty struct ib_qp *real_qp; 13030e0ec7e0SSean Hefty int ret; 13040e0ec7e0SSean Hefty 13050e0ec7e0SSean Hefty real_qp = qp->real_qp; 13060e0ec7e0SSean Hefty xrcd = real_qp->xrcd; 13070e0ec7e0SSean Hefty 13080e0ec7e0SSean Hefty mutex_lock(&xrcd->tgt_qp_mutex); 13090e0ec7e0SSean Hefty ib_close_qp(qp); 13100e0ec7e0SSean Hefty if (atomic_read(&real_qp->usecnt) == 0) 13110e0ec7e0SSean Hefty list_del(&real_qp->xrcd_list); 13120e0ec7e0SSean Hefty else 13130e0ec7e0SSean Hefty real_qp = NULL; 13140e0ec7e0SSean Hefty mutex_unlock(&xrcd->tgt_qp_mutex); 13150e0ec7e0SSean Hefty 13160e0ec7e0SSean Hefty if (real_qp) { 13170e0ec7e0SSean Hefty ret = ib_destroy_qp(real_qp); 13180e0ec7e0SSean Hefty if (!ret) 13190e0ec7e0SSean Hefty atomic_dec(&xrcd->usecnt); 13200e0ec7e0SSean Hefty else 13210e0ec7e0SSean Hefty __ib_insert_xrcd_qp(xrcd, real_qp); 13220e0ec7e0SSean Hefty } 13230e0ec7e0SSean Hefty 13240e0ec7e0SSean Hefty return 0; 13250e0ec7e0SSean Hefty } 13260e0ec7e0SSean Hefty 13271da177e4SLinus Torvalds int ib_destroy_qp(struct ib_qp *qp) 13281da177e4SLinus Torvalds { 13291da177e4SLinus Torvalds struct ib_pd *pd; 13301da177e4SLinus Torvalds struct ib_cq *scq, *rcq; 13311da177e4SLinus Torvalds struct ib_srq *srq; 1332a9017e23SYishai Hadas struct ib_rwq_ind_table *ind_tbl; 13331da177e4SLinus Torvalds int ret; 13341da177e4SLinus Torvalds 1335fffb0383SChristoph Hellwig WARN_ON_ONCE(qp->mrs_used > 0); 1336fffb0383SChristoph Hellwig 13370e0ec7e0SSean Hefty if (atomic_read(&qp->usecnt)) 13380e0ec7e0SSean Hefty return -EBUSY; 13390e0ec7e0SSean Hefty 13400e0ec7e0SSean Hefty if (qp->real_qp != qp) 13410e0ec7e0SSean Hefty return __ib_destroy_shared_qp(qp); 13420e0ec7e0SSean Hefty 13431da177e4SLinus Torvalds pd = qp->pd; 13441da177e4SLinus Torvalds scq = qp->send_cq; 13451da177e4SLinus Torvalds rcq = qp->recv_cq; 13461da177e4SLinus Torvalds srq = qp->srq; 1347a9017e23SYishai Hadas ind_tbl = qp->rwq_ind_tbl; 13481da177e4SLinus Torvalds 1349a060b562SChristoph Hellwig if (!qp->uobject) 1350a060b562SChristoph Hellwig rdma_rw_cleanup_mrs(qp); 1351a060b562SChristoph Hellwig 13521da177e4SLinus Torvalds ret = qp->device->destroy_qp(qp); 13531da177e4SLinus Torvalds if (!ret) { 1354b42b63cfSSean Hefty if (pd) 13551da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 1356b42b63cfSSean Hefty if (scq) 13571da177e4SLinus Torvalds atomic_dec(&scq->usecnt); 1358b42b63cfSSean Hefty if (rcq) 13591da177e4SLinus Torvalds atomic_dec(&rcq->usecnt); 13601da177e4SLinus Torvalds if (srq) 13611da177e4SLinus Torvalds atomic_dec(&srq->usecnt); 1362a9017e23SYishai Hadas if (ind_tbl) 1363a9017e23SYishai Hadas atomic_dec(&ind_tbl->usecnt); 13641da177e4SLinus Torvalds } 13651da177e4SLinus Torvalds 13661da177e4SLinus Torvalds return ret; 13671da177e4SLinus Torvalds } 13681da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_qp); 13691da177e4SLinus Torvalds 13701da177e4SLinus Torvalds /* Completion queues */ 13711da177e4SLinus Torvalds 13721da177e4SLinus Torvalds struct ib_cq *ib_create_cq(struct ib_device *device, 13731da177e4SLinus Torvalds ib_comp_handler comp_handler, 13741da177e4SLinus Torvalds void (*event_handler)(struct ib_event *, void *), 13758e37210bSMatan Barak void *cq_context, 13768e37210bSMatan Barak const struct ib_cq_init_attr *cq_attr) 13771da177e4SLinus Torvalds { 13781da177e4SLinus Torvalds struct ib_cq *cq; 13791da177e4SLinus Torvalds 13808e37210bSMatan Barak cq = device->create_cq(device, cq_attr, NULL, NULL); 13811da177e4SLinus Torvalds 13821da177e4SLinus Torvalds if (!IS_ERR(cq)) { 13831da177e4SLinus Torvalds cq->device = device; 1384b5e81bf5SRoland Dreier cq->uobject = NULL; 13851da177e4SLinus Torvalds cq->comp_handler = comp_handler; 13861da177e4SLinus Torvalds cq->event_handler = event_handler; 13871da177e4SLinus Torvalds cq->cq_context = cq_context; 13881da177e4SLinus Torvalds atomic_set(&cq->usecnt, 0); 13891da177e4SLinus Torvalds } 13901da177e4SLinus Torvalds 13911da177e4SLinus Torvalds return cq; 13921da177e4SLinus Torvalds } 13931da177e4SLinus Torvalds EXPORT_SYMBOL(ib_create_cq); 13941da177e4SLinus Torvalds 13952dd57162SEli Cohen int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) 13962dd57162SEli Cohen { 13972dd57162SEli Cohen return cq->device->modify_cq ? 13982dd57162SEli Cohen cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS; 13992dd57162SEli Cohen } 14002dd57162SEli Cohen EXPORT_SYMBOL(ib_modify_cq); 14012dd57162SEli Cohen 14021da177e4SLinus Torvalds int ib_destroy_cq(struct ib_cq *cq) 14031da177e4SLinus Torvalds { 14041da177e4SLinus Torvalds if (atomic_read(&cq->usecnt)) 14051da177e4SLinus Torvalds return -EBUSY; 14061da177e4SLinus Torvalds 14071da177e4SLinus Torvalds return cq->device->destroy_cq(cq); 14081da177e4SLinus Torvalds } 14091da177e4SLinus Torvalds EXPORT_SYMBOL(ib_destroy_cq); 14101da177e4SLinus Torvalds 1411a74cd4afSRoland Dreier int ib_resize_cq(struct ib_cq *cq, int cqe) 14121da177e4SLinus Torvalds { 141340de2e54SRoland Dreier return cq->device->resize_cq ? 141433b9b3eeSRoland Dreier cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; 14151da177e4SLinus Torvalds } 14161da177e4SLinus Torvalds EXPORT_SYMBOL(ib_resize_cq); 14171da177e4SLinus Torvalds 14181da177e4SLinus Torvalds /* Memory regions */ 14191da177e4SLinus Torvalds 14201da177e4SLinus Torvalds int ib_dereg_mr(struct ib_mr *mr) 14211da177e4SLinus Torvalds { 1422ab67ed8dSChristoph Hellwig struct ib_pd *pd = mr->pd; 14231da177e4SLinus Torvalds int ret; 14241da177e4SLinus Torvalds 14251da177e4SLinus Torvalds ret = mr->device->dereg_mr(mr); 14261da177e4SLinus Torvalds if (!ret) 14271da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 14281da177e4SLinus Torvalds 14291da177e4SLinus Torvalds return ret; 14301da177e4SLinus Torvalds } 14311da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dereg_mr); 14321da177e4SLinus Torvalds 14339bee178bSSagi Grimberg /** 14349bee178bSSagi Grimberg * ib_alloc_mr() - Allocates a memory region 14359bee178bSSagi Grimberg * @pd: protection domain associated with the region 14369bee178bSSagi Grimberg * @mr_type: memory region type 14379bee178bSSagi Grimberg * @max_num_sg: maximum sg entries available for registration. 14389bee178bSSagi Grimberg * 14399bee178bSSagi Grimberg * Notes: 14409bee178bSSagi Grimberg * Memory registeration page/sg lists must not exceed max_num_sg. 14419bee178bSSagi Grimberg * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed 14429bee178bSSagi Grimberg * max_num_sg * used_page_size. 14439bee178bSSagi Grimberg * 14449bee178bSSagi Grimberg */ 14459bee178bSSagi Grimberg struct ib_mr *ib_alloc_mr(struct ib_pd *pd, 14469bee178bSSagi Grimberg enum ib_mr_type mr_type, 14479bee178bSSagi Grimberg u32 max_num_sg) 144817cd3a2dSSagi Grimberg { 144917cd3a2dSSagi Grimberg struct ib_mr *mr; 145017cd3a2dSSagi Grimberg 1451d9f272c5SSagi Grimberg if (!pd->device->alloc_mr) 145217cd3a2dSSagi Grimberg return ERR_PTR(-ENOSYS); 145317cd3a2dSSagi Grimberg 1454d9f272c5SSagi Grimberg mr = pd->device->alloc_mr(pd, mr_type, max_num_sg); 145517cd3a2dSSagi Grimberg if (!IS_ERR(mr)) { 145617cd3a2dSSagi Grimberg mr->device = pd->device; 145717cd3a2dSSagi Grimberg mr->pd = pd; 145817cd3a2dSSagi Grimberg mr->uobject = NULL; 145917cd3a2dSSagi Grimberg atomic_inc(&pd->usecnt); 1460d4a85c30SSteve Wise mr->need_inval = false; 146117cd3a2dSSagi Grimberg } 146217cd3a2dSSagi Grimberg 146317cd3a2dSSagi Grimberg return mr; 146417cd3a2dSSagi Grimberg } 14659bee178bSSagi Grimberg EXPORT_SYMBOL(ib_alloc_mr); 146600f7ec36SSteve Wise 14671da177e4SLinus Torvalds /* "Fast" memory regions */ 14681da177e4SLinus Torvalds 14691da177e4SLinus Torvalds struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, 14701da177e4SLinus Torvalds int mr_access_flags, 14711da177e4SLinus Torvalds struct ib_fmr_attr *fmr_attr) 14721da177e4SLinus Torvalds { 14731da177e4SLinus Torvalds struct ib_fmr *fmr; 14741da177e4SLinus Torvalds 14751da177e4SLinus Torvalds if (!pd->device->alloc_fmr) 14761da177e4SLinus Torvalds return ERR_PTR(-ENOSYS); 14771da177e4SLinus Torvalds 14781da177e4SLinus Torvalds fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); 14791da177e4SLinus Torvalds if (!IS_ERR(fmr)) { 14801da177e4SLinus Torvalds fmr->device = pd->device; 14811da177e4SLinus Torvalds fmr->pd = pd; 14821da177e4SLinus Torvalds atomic_inc(&pd->usecnt); 14831da177e4SLinus Torvalds } 14841da177e4SLinus Torvalds 14851da177e4SLinus Torvalds return fmr; 14861da177e4SLinus Torvalds } 14871da177e4SLinus Torvalds EXPORT_SYMBOL(ib_alloc_fmr); 14881da177e4SLinus Torvalds 14891da177e4SLinus Torvalds int ib_unmap_fmr(struct list_head *fmr_list) 14901da177e4SLinus Torvalds { 14911da177e4SLinus Torvalds struct ib_fmr *fmr; 14921da177e4SLinus Torvalds 14931da177e4SLinus Torvalds if (list_empty(fmr_list)) 14941da177e4SLinus Torvalds return 0; 14951da177e4SLinus Torvalds 14961da177e4SLinus Torvalds fmr = list_entry(fmr_list->next, struct ib_fmr, list); 14971da177e4SLinus Torvalds return fmr->device->unmap_fmr(fmr_list); 14981da177e4SLinus Torvalds } 14991da177e4SLinus Torvalds EXPORT_SYMBOL(ib_unmap_fmr); 15001da177e4SLinus Torvalds 15011da177e4SLinus Torvalds int ib_dealloc_fmr(struct ib_fmr *fmr) 15021da177e4SLinus Torvalds { 15031da177e4SLinus Torvalds struct ib_pd *pd; 15041da177e4SLinus Torvalds int ret; 15051da177e4SLinus Torvalds 15061da177e4SLinus Torvalds pd = fmr->pd; 15071da177e4SLinus Torvalds ret = fmr->device->dealloc_fmr(fmr); 15081da177e4SLinus Torvalds if (!ret) 15091da177e4SLinus Torvalds atomic_dec(&pd->usecnt); 15101da177e4SLinus Torvalds 15111da177e4SLinus Torvalds return ret; 15121da177e4SLinus Torvalds } 15131da177e4SLinus Torvalds EXPORT_SYMBOL(ib_dealloc_fmr); 15141da177e4SLinus Torvalds 15151da177e4SLinus Torvalds /* Multicast groups */ 15161da177e4SLinus Torvalds 15171da177e4SLinus Torvalds int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 15181da177e4SLinus Torvalds { 1519c3bccbfbSOr Gerlitz int ret; 1520c3bccbfbSOr Gerlitz 15210c33aeedSJack Morgenstein if (!qp->device->attach_mcast) 15220c33aeedSJack Morgenstein return -ENOSYS; 15230c33aeedSJack Morgenstein if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) 15240c33aeedSJack Morgenstein return -EINVAL; 15250c33aeedSJack Morgenstein 1526c3bccbfbSOr Gerlitz ret = qp->device->attach_mcast(qp, gid, lid); 1527c3bccbfbSOr Gerlitz if (!ret) 1528c3bccbfbSOr Gerlitz atomic_inc(&qp->usecnt); 1529c3bccbfbSOr Gerlitz return ret; 15301da177e4SLinus Torvalds } 15311da177e4SLinus Torvalds EXPORT_SYMBOL(ib_attach_mcast); 15321da177e4SLinus Torvalds 15331da177e4SLinus Torvalds int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) 15341da177e4SLinus Torvalds { 1535c3bccbfbSOr Gerlitz int ret; 1536c3bccbfbSOr Gerlitz 15370c33aeedSJack Morgenstein if (!qp->device->detach_mcast) 15380c33aeedSJack Morgenstein return -ENOSYS; 15390c33aeedSJack Morgenstein if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) 15400c33aeedSJack Morgenstein return -EINVAL; 15410c33aeedSJack Morgenstein 1542c3bccbfbSOr Gerlitz ret = qp->device->detach_mcast(qp, gid, lid); 1543c3bccbfbSOr Gerlitz if (!ret) 1544c3bccbfbSOr Gerlitz atomic_dec(&qp->usecnt); 1545c3bccbfbSOr Gerlitz return ret; 15461da177e4SLinus Torvalds } 15471da177e4SLinus Torvalds EXPORT_SYMBOL(ib_detach_mcast); 154859991f94SSean Hefty 154959991f94SSean Hefty struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device) 155059991f94SSean Hefty { 155159991f94SSean Hefty struct ib_xrcd *xrcd; 155259991f94SSean Hefty 155359991f94SSean Hefty if (!device->alloc_xrcd) 155459991f94SSean Hefty return ERR_PTR(-ENOSYS); 155559991f94SSean Hefty 155659991f94SSean Hefty xrcd = device->alloc_xrcd(device, NULL, NULL); 155759991f94SSean Hefty if (!IS_ERR(xrcd)) { 155859991f94SSean Hefty xrcd->device = device; 155953d0bd1eSSean Hefty xrcd->inode = NULL; 156059991f94SSean Hefty atomic_set(&xrcd->usecnt, 0); 1561d3d72d90SSean Hefty mutex_init(&xrcd->tgt_qp_mutex); 1562d3d72d90SSean Hefty INIT_LIST_HEAD(&xrcd->tgt_qp_list); 156359991f94SSean Hefty } 156459991f94SSean Hefty 156559991f94SSean Hefty return xrcd; 156659991f94SSean Hefty } 156759991f94SSean Hefty EXPORT_SYMBOL(ib_alloc_xrcd); 156859991f94SSean Hefty 156959991f94SSean Hefty int ib_dealloc_xrcd(struct ib_xrcd *xrcd) 157059991f94SSean Hefty { 1571d3d72d90SSean Hefty struct ib_qp *qp; 1572d3d72d90SSean Hefty int ret; 1573d3d72d90SSean Hefty 157459991f94SSean Hefty if (atomic_read(&xrcd->usecnt)) 157559991f94SSean Hefty return -EBUSY; 157659991f94SSean Hefty 1577d3d72d90SSean Hefty while (!list_empty(&xrcd->tgt_qp_list)) { 1578d3d72d90SSean Hefty qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); 1579d3d72d90SSean Hefty ret = ib_destroy_qp(qp); 1580d3d72d90SSean Hefty if (ret) 1581d3d72d90SSean Hefty return ret; 1582d3d72d90SSean Hefty } 1583d3d72d90SSean Hefty 158459991f94SSean Hefty return xrcd->device->dealloc_xrcd(xrcd); 158559991f94SSean Hefty } 158659991f94SSean Hefty EXPORT_SYMBOL(ib_dealloc_xrcd); 1587319a441dSHadar Hen Zion 15885fd251c8SYishai Hadas /** 15895fd251c8SYishai Hadas * ib_create_wq - Creates a WQ associated with the specified protection 15905fd251c8SYishai Hadas * domain. 15915fd251c8SYishai Hadas * @pd: The protection domain associated with the WQ. 15925fd251c8SYishai Hadas * @wq_init_attr: A list of initial attributes required to create the 15935fd251c8SYishai Hadas * WQ. If WQ creation succeeds, then the attributes are updated to 15945fd251c8SYishai Hadas * the actual capabilities of the created WQ. 15955fd251c8SYishai Hadas * 15965fd251c8SYishai Hadas * wq_init_attr->max_wr and wq_init_attr->max_sge determine 15975fd251c8SYishai Hadas * the requested size of the WQ, and set to the actual values allocated 15985fd251c8SYishai Hadas * on return. 15995fd251c8SYishai Hadas * If ib_create_wq() succeeds, then max_wr and max_sge will always be 16005fd251c8SYishai Hadas * at least as large as the requested values. 16015fd251c8SYishai Hadas */ 16025fd251c8SYishai Hadas struct ib_wq *ib_create_wq(struct ib_pd *pd, 16035fd251c8SYishai Hadas struct ib_wq_init_attr *wq_attr) 16045fd251c8SYishai Hadas { 16055fd251c8SYishai Hadas struct ib_wq *wq; 16065fd251c8SYishai Hadas 16075fd251c8SYishai Hadas if (!pd->device->create_wq) 16085fd251c8SYishai Hadas return ERR_PTR(-ENOSYS); 16095fd251c8SYishai Hadas 16105fd251c8SYishai Hadas wq = pd->device->create_wq(pd, wq_attr, NULL); 16115fd251c8SYishai Hadas if (!IS_ERR(wq)) { 16125fd251c8SYishai Hadas wq->event_handler = wq_attr->event_handler; 16135fd251c8SYishai Hadas wq->wq_context = wq_attr->wq_context; 16145fd251c8SYishai Hadas wq->wq_type = wq_attr->wq_type; 16155fd251c8SYishai Hadas wq->cq = wq_attr->cq; 16165fd251c8SYishai Hadas wq->device = pd->device; 16175fd251c8SYishai Hadas wq->pd = pd; 16185fd251c8SYishai Hadas wq->uobject = NULL; 16195fd251c8SYishai Hadas atomic_inc(&pd->usecnt); 16205fd251c8SYishai Hadas atomic_inc(&wq_attr->cq->usecnt); 16215fd251c8SYishai Hadas atomic_set(&wq->usecnt, 0); 16225fd251c8SYishai Hadas } 16235fd251c8SYishai Hadas return wq; 16245fd251c8SYishai Hadas } 16255fd251c8SYishai Hadas EXPORT_SYMBOL(ib_create_wq); 16265fd251c8SYishai Hadas 16275fd251c8SYishai Hadas /** 16285fd251c8SYishai Hadas * ib_destroy_wq - Destroys the specified WQ. 16295fd251c8SYishai Hadas * @wq: The WQ to destroy. 16305fd251c8SYishai Hadas */ 16315fd251c8SYishai Hadas int ib_destroy_wq(struct ib_wq *wq) 16325fd251c8SYishai Hadas { 16335fd251c8SYishai Hadas int err; 16345fd251c8SYishai Hadas struct ib_cq *cq = wq->cq; 16355fd251c8SYishai Hadas struct ib_pd *pd = wq->pd; 16365fd251c8SYishai Hadas 16375fd251c8SYishai Hadas if (atomic_read(&wq->usecnt)) 16385fd251c8SYishai Hadas return -EBUSY; 16395fd251c8SYishai Hadas 16405fd251c8SYishai Hadas err = wq->device->destroy_wq(wq); 16415fd251c8SYishai Hadas if (!err) { 16425fd251c8SYishai Hadas atomic_dec(&pd->usecnt); 16435fd251c8SYishai Hadas atomic_dec(&cq->usecnt); 16445fd251c8SYishai Hadas } 16455fd251c8SYishai Hadas return err; 16465fd251c8SYishai Hadas } 16475fd251c8SYishai Hadas EXPORT_SYMBOL(ib_destroy_wq); 16485fd251c8SYishai Hadas 16495fd251c8SYishai Hadas /** 16505fd251c8SYishai Hadas * ib_modify_wq - Modifies the specified WQ. 16515fd251c8SYishai Hadas * @wq: The WQ to modify. 16525fd251c8SYishai Hadas * @wq_attr: On input, specifies the WQ attributes to modify. 16535fd251c8SYishai Hadas * @wq_attr_mask: A bit-mask used to specify which attributes of the WQ 16545fd251c8SYishai Hadas * are being modified. 16555fd251c8SYishai Hadas * On output, the current values of selected WQ attributes are returned. 16565fd251c8SYishai Hadas */ 16575fd251c8SYishai Hadas int ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr, 16585fd251c8SYishai Hadas u32 wq_attr_mask) 16595fd251c8SYishai Hadas { 16605fd251c8SYishai Hadas int err; 16615fd251c8SYishai Hadas 16625fd251c8SYishai Hadas if (!wq->device->modify_wq) 16635fd251c8SYishai Hadas return -ENOSYS; 16645fd251c8SYishai Hadas 16655fd251c8SYishai Hadas err = wq->device->modify_wq(wq, wq_attr, wq_attr_mask, NULL); 16665fd251c8SYishai Hadas return err; 16675fd251c8SYishai Hadas } 16685fd251c8SYishai Hadas EXPORT_SYMBOL(ib_modify_wq); 16695fd251c8SYishai Hadas 16706d39786bSYishai Hadas /* 16716d39786bSYishai Hadas * ib_create_rwq_ind_table - Creates a RQ Indirection Table. 16726d39786bSYishai Hadas * @device: The device on which to create the rwq indirection table. 16736d39786bSYishai Hadas * @ib_rwq_ind_table_init_attr: A list of initial attributes required to 16746d39786bSYishai Hadas * create the Indirection Table. 16756d39786bSYishai Hadas * 16766d39786bSYishai Hadas * Note: The life time of ib_rwq_ind_table_init_attr->ind_tbl is not less 16776d39786bSYishai Hadas * than the created ib_rwq_ind_table object and the caller is responsible 16786d39786bSYishai Hadas * for its memory allocation/free. 16796d39786bSYishai Hadas */ 16806d39786bSYishai Hadas struct ib_rwq_ind_table *ib_create_rwq_ind_table(struct ib_device *device, 16816d39786bSYishai Hadas struct ib_rwq_ind_table_init_attr *init_attr) 16826d39786bSYishai Hadas { 16836d39786bSYishai Hadas struct ib_rwq_ind_table *rwq_ind_table; 16846d39786bSYishai Hadas int i; 16856d39786bSYishai Hadas u32 table_size; 16866d39786bSYishai Hadas 16876d39786bSYishai Hadas if (!device->create_rwq_ind_table) 16886d39786bSYishai Hadas return ERR_PTR(-ENOSYS); 16896d39786bSYishai Hadas 16906d39786bSYishai Hadas table_size = (1 << init_attr->log_ind_tbl_size); 16916d39786bSYishai Hadas rwq_ind_table = device->create_rwq_ind_table(device, 16926d39786bSYishai Hadas init_attr, NULL); 16936d39786bSYishai Hadas if (IS_ERR(rwq_ind_table)) 16946d39786bSYishai Hadas return rwq_ind_table; 16956d39786bSYishai Hadas 16966d39786bSYishai Hadas rwq_ind_table->ind_tbl = init_attr->ind_tbl; 16976d39786bSYishai Hadas rwq_ind_table->log_ind_tbl_size = init_attr->log_ind_tbl_size; 16986d39786bSYishai Hadas rwq_ind_table->device = device; 16996d39786bSYishai Hadas rwq_ind_table->uobject = NULL; 17006d39786bSYishai Hadas atomic_set(&rwq_ind_table->usecnt, 0); 17016d39786bSYishai Hadas 17026d39786bSYishai Hadas for (i = 0; i < table_size; i++) 17036d39786bSYishai Hadas atomic_inc(&rwq_ind_table->ind_tbl[i]->usecnt); 17046d39786bSYishai Hadas 17056d39786bSYishai Hadas return rwq_ind_table; 17066d39786bSYishai Hadas } 17076d39786bSYishai Hadas EXPORT_SYMBOL(ib_create_rwq_ind_table); 17086d39786bSYishai Hadas 17096d39786bSYishai Hadas /* 17106d39786bSYishai Hadas * ib_destroy_rwq_ind_table - Destroys the specified Indirection Table. 17116d39786bSYishai Hadas * @wq_ind_table: The Indirection Table to destroy. 17126d39786bSYishai Hadas */ 17136d39786bSYishai Hadas int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *rwq_ind_table) 17146d39786bSYishai Hadas { 17156d39786bSYishai Hadas int err, i; 17166d39786bSYishai Hadas u32 table_size = (1 << rwq_ind_table->log_ind_tbl_size); 17176d39786bSYishai Hadas struct ib_wq **ind_tbl = rwq_ind_table->ind_tbl; 17186d39786bSYishai Hadas 17196d39786bSYishai Hadas if (atomic_read(&rwq_ind_table->usecnt)) 17206d39786bSYishai Hadas return -EBUSY; 17216d39786bSYishai Hadas 17226d39786bSYishai Hadas err = rwq_ind_table->device->destroy_rwq_ind_table(rwq_ind_table); 17236d39786bSYishai Hadas if (!err) { 17246d39786bSYishai Hadas for (i = 0; i < table_size; i++) 17256d39786bSYishai Hadas atomic_dec(&ind_tbl[i]->usecnt); 17266d39786bSYishai Hadas } 17276d39786bSYishai Hadas 17286d39786bSYishai Hadas return err; 17296d39786bSYishai Hadas } 17306d39786bSYishai Hadas EXPORT_SYMBOL(ib_destroy_rwq_ind_table); 17316d39786bSYishai Hadas 1732319a441dSHadar Hen Zion struct ib_flow *ib_create_flow(struct ib_qp *qp, 1733319a441dSHadar Hen Zion struct ib_flow_attr *flow_attr, 1734319a441dSHadar Hen Zion int domain) 1735319a441dSHadar Hen Zion { 1736319a441dSHadar Hen Zion struct ib_flow *flow_id; 1737319a441dSHadar Hen Zion if (!qp->device->create_flow) 1738319a441dSHadar Hen Zion return ERR_PTR(-ENOSYS); 1739319a441dSHadar Hen Zion 1740319a441dSHadar Hen Zion flow_id = qp->device->create_flow(qp, flow_attr, domain); 17418ecc7985SMark Bloch if (!IS_ERR(flow_id)) { 1742319a441dSHadar Hen Zion atomic_inc(&qp->usecnt); 17438ecc7985SMark Bloch flow_id->qp = qp; 17448ecc7985SMark Bloch } 1745319a441dSHadar Hen Zion return flow_id; 1746319a441dSHadar Hen Zion } 1747319a441dSHadar Hen Zion EXPORT_SYMBOL(ib_create_flow); 1748319a441dSHadar Hen Zion 1749319a441dSHadar Hen Zion int ib_destroy_flow(struct ib_flow *flow_id) 1750319a441dSHadar Hen Zion { 1751319a441dSHadar Hen Zion int err; 1752319a441dSHadar Hen Zion struct ib_qp *qp = flow_id->qp; 1753319a441dSHadar Hen Zion 1754319a441dSHadar Hen Zion err = qp->device->destroy_flow(flow_id); 1755319a441dSHadar Hen Zion if (!err) 1756319a441dSHadar Hen Zion atomic_dec(&qp->usecnt); 1757319a441dSHadar Hen Zion return err; 1758319a441dSHadar Hen Zion } 1759319a441dSHadar Hen Zion EXPORT_SYMBOL(ib_destroy_flow); 17601b01d335SSagi Grimberg 17611b01d335SSagi Grimberg int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, 17621b01d335SSagi Grimberg struct ib_mr_status *mr_status) 17631b01d335SSagi Grimberg { 17641b01d335SSagi Grimberg return mr->device->check_mr_status ? 17651b01d335SSagi Grimberg mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS; 17661b01d335SSagi Grimberg } 17671b01d335SSagi Grimberg EXPORT_SYMBOL(ib_check_mr_status); 17684c67e2bfSSagi Grimberg 176950174a7fSEli Cohen int ib_set_vf_link_state(struct ib_device *device, int vf, u8 port, 177050174a7fSEli Cohen int state) 177150174a7fSEli Cohen { 177250174a7fSEli Cohen if (!device->set_vf_link_state) 177350174a7fSEli Cohen return -ENOSYS; 177450174a7fSEli Cohen 177550174a7fSEli Cohen return device->set_vf_link_state(device, vf, port, state); 177650174a7fSEli Cohen } 177750174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_link_state); 177850174a7fSEli Cohen 177950174a7fSEli Cohen int ib_get_vf_config(struct ib_device *device, int vf, u8 port, 178050174a7fSEli Cohen struct ifla_vf_info *info) 178150174a7fSEli Cohen { 178250174a7fSEli Cohen if (!device->get_vf_config) 178350174a7fSEli Cohen return -ENOSYS; 178450174a7fSEli Cohen 178550174a7fSEli Cohen return device->get_vf_config(device, vf, port, info); 178650174a7fSEli Cohen } 178750174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_config); 178850174a7fSEli Cohen 178950174a7fSEli Cohen int ib_get_vf_stats(struct ib_device *device, int vf, u8 port, 179050174a7fSEli Cohen struct ifla_vf_stats *stats) 179150174a7fSEli Cohen { 179250174a7fSEli Cohen if (!device->get_vf_stats) 179350174a7fSEli Cohen return -ENOSYS; 179450174a7fSEli Cohen 179550174a7fSEli Cohen return device->get_vf_stats(device, vf, port, stats); 179650174a7fSEli Cohen } 179750174a7fSEli Cohen EXPORT_SYMBOL(ib_get_vf_stats); 179850174a7fSEli Cohen 179950174a7fSEli Cohen int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, 180050174a7fSEli Cohen int type) 180150174a7fSEli Cohen { 180250174a7fSEli Cohen if (!device->set_vf_guid) 180350174a7fSEli Cohen return -ENOSYS; 180450174a7fSEli Cohen 180550174a7fSEli Cohen return device->set_vf_guid(device, vf, port, guid, type); 180650174a7fSEli Cohen } 180750174a7fSEli Cohen EXPORT_SYMBOL(ib_set_vf_guid); 180850174a7fSEli Cohen 18094c67e2bfSSagi Grimberg /** 18104c67e2bfSSagi Grimberg * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list 18114c67e2bfSSagi Grimberg * and set it the memory region. 18124c67e2bfSSagi Grimberg * @mr: memory region 18134c67e2bfSSagi Grimberg * @sg: dma mapped scatterlist 18144c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 1815ff2ba993SChristoph Hellwig * @sg_offset: offset in bytes into sg 18164c67e2bfSSagi Grimberg * @page_size: page vector desired page size 18174c67e2bfSSagi Grimberg * 18184c67e2bfSSagi Grimberg * Constraints: 18194c67e2bfSSagi Grimberg * - The first sg element is allowed to have an offset. 182052746129SBart Van Assche * - Each sg element must either be aligned to page_size or virtually 182152746129SBart Van Assche * contiguous to the previous element. In case an sg element has a 182252746129SBart Van Assche * non-contiguous offset, the mapping prefix will not include it. 18234c67e2bfSSagi Grimberg * - The last sg element is allowed to have length less than page_size. 18244c67e2bfSSagi Grimberg * - If sg_nents total byte length exceeds the mr max_num_sge * page_size 18254c67e2bfSSagi Grimberg * then only max_num_sg entries will be mapped. 182652746129SBart Van Assche * - If the MR was allocated with type IB_MR_TYPE_SG_GAPS, none of these 1827f5aa9159SSagi Grimberg * constraints holds and the page_size argument is ignored. 18284c67e2bfSSagi Grimberg * 18294c67e2bfSSagi Grimberg * Returns the number of sg elements that were mapped to the memory region. 18304c67e2bfSSagi Grimberg * 18314c67e2bfSSagi Grimberg * After this completes successfully, the memory region 18324c67e2bfSSagi Grimberg * is ready for registration. 18334c67e2bfSSagi Grimberg */ 1834ff2ba993SChristoph Hellwig int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents, 18359aa8b321SBart Van Assche unsigned int *sg_offset, unsigned int page_size) 18364c67e2bfSSagi Grimberg { 18374c67e2bfSSagi Grimberg if (unlikely(!mr->device->map_mr_sg)) 18384c67e2bfSSagi Grimberg return -ENOSYS; 18394c67e2bfSSagi Grimberg 18404c67e2bfSSagi Grimberg mr->page_size = page_size; 18414c67e2bfSSagi Grimberg 1842ff2ba993SChristoph Hellwig return mr->device->map_mr_sg(mr, sg, sg_nents, sg_offset); 18434c67e2bfSSagi Grimberg } 18444c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_map_mr_sg); 18454c67e2bfSSagi Grimberg 18464c67e2bfSSagi Grimberg /** 18474c67e2bfSSagi Grimberg * ib_sg_to_pages() - Convert the largest prefix of a sg list 18484c67e2bfSSagi Grimberg * to a page vector 18494c67e2bfSSagi Grimberg * @mr: memory region 18504c67e2bfSSagi Grimberg * @sgl: dma mapped scatterlist 18514c67e2bfSSagi Grimberg * @sg_nents: number of entries in sg 18529aa8b321SBart Van Assche * @sg_offset_p: IN: start offset in bytes into sg 18539aa8b321SBart Van Assche * OUT: offset in bytes for element n of the sg of the first 18549aa8b321SBart Van Assche * byte that has not been processed where n is the return 18559aa8b321SBart Van Assche * value of this function. 18564c67e2bfSSagi Grimberg * @set_page: driver page assignment function pointer 18574c67e2bfSSagi Grimberg * 18588f5ba10eSBart Van Assche * Core service helper for drivers to convert the largest 18594c67e2bfSSagi Grimberg * prefix of given sg list to a page vector. The sg list 18604c67e2bfSSagi Grimberg * prefix converted is the prefix that meet the requirements 18614c67e2bfSSagi Grimberg * of ib_map_mr_sg. 18624c67e2bfSSagi Grimberg * 18634c67e2bfSSagi Grimberg * Returns the number of sg elements that were assigned to 18644c67e2bfSSagi Grimberg * a page vector. 18654c67e2bfSSagi Grimberg */ 1866ff2ba993SChristoph Hellwig int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents, 18679aa8b321SBart Van Assche unsigned int *sg_offset_p, int (*set_page)(struct ib_mr *, u64)) 18684c67e2bfSSagi Grimberg { 18694c67e2bfSSagi Grimberg struct scatterlist *sg; 1870b6aeb980SBart Van Assche u64 last_end_dma_addr = 0; 18719aa8b321SBart Van Assche unsigned int sg_offset = sg_offset_p ? *sg_offset_p : 0; 18724c67e2bfSSagi Grimberg unsigned int last_page_off = 0; 18734c67e2bfSSagi Grimberg u64 page_mask = ~((u64)mr->page_size - 1); 18748f5ba10eSBart Van Assche int i, ret; 18754c67e2bfSSagi Grimberg 18769aa8b321SBart Van Assche if (unlikely(sg_nents <= 0 || sg_offset > sg_dma_len(&sgl[0]))) 18779aa8b321SBart Van Assche return -EINVAL; 18789aa8b321SBart Van Assche 1879ff2ba993SChristoph Hellwig mr->iova = sg_dma_address(&sgl[0]) + sg_offset; 18804c67e2bfSSagi Grimberg mr->length = 0; 18814c67e2bfSSagi Grimberg 18824c67e2bfSSagi Grimberg for_each_sg(sgl, sg, sg_nents, i) { 1883ff2ba993SChristoph Hellwig u64 dma_addr = sg_dma_address(sg) + sg_offset; 18849aa8b321SBart Van Assche u64 prev_addr = dma_addr; 1885ff2ba993SChristoph Hellwig unsigned int dma_len = sg_dma_len(sg) - sg_offset; 18864c67e2bfSSagi Grimberg u64 end_dma_addr = dma_addr + dma_len; 18874c67e2bfSSagi Grimberg u64 page_addr = dma_addr & page_mask; 18884c67e2bfSSagi Grimberg 18898f5ba10eSBart Van Assche /* 18908f5ba10eSBart Van Assche * For the second and later elements, check whether either the 18918f5ba10eSBart Van Assche * end of element i-1 or the start of element i is not aligned 18928f5ba10eSBart Van Assche * on a page boundary. 18938f5ba10eSBart Van Assche */ 18948f5ba10eSBart Van Assche if (i && (last_page_off != 0 || page_addr != dma_addr)) { 18958f5ba10eSBart Van Assche /* Stop mapping if there is a gap. */ 18968f5ba10eSBart Van Assche if (last_end_dma_addr != dma_addr) 18978f5ba10eSBart Van Assche break; 18984c67e2bfSSagi Grimberg 18998f5ba10eSBart Van Assche /* 19008f5ba10eSBart Van Assche * Coalesce this element with the last. If it is small 19018f5ba10eSBart Van Assche * enough just update mr->length. Otherwise start 19028f5ba10eSBart Van Assche * mapping from the next page. 19038f5ba10eSBart Van Assche */ 19048f5ba10eSBart Van Assche goto next_page; 19054c67e2bfSSagi Grimberg } 19064c67e2bfSSagi Grimberg 19074c67e2bfSSagi Grimberg do { 19088f5ba10eSBart Van Assche ret = set_page(mr, page_addr); 19099aa8b321SBart Van Assche if (unlikely(ret < 0)) { 19109aa8b321SBart Van Assche sg_offset = prev_addr - sg_dma_address(sg); 19119aa8b321SBart Van Assche mr->length += prev_addr - dma_addr; 19129aa8b321SBart Van Assche if (sg_offset_p) 19139aa8b321SBart Van Assche *sg_offset_p = sg_offset; 19149aa8b321SBart Van Assche return i || sg_offset ? i : ret; 19159aa8b321SBart Van Assche } 19169aa8b321SBart Van Assche prev_addr = page_addr; 19178f5ba10eSBart Van Assche next_page: 19184c67e2bfSSagi Grimberg page_addr += mr->page_size; 19194c67e2bfSSagi Grimberg } while (page_addr < end_dma_addr); 19204c67e2bfSSagi Grimberg 19214c67e2bfSSagi Grimberg mr->length += dma_len; 19224c67e2bfSSagi Grimberg last_end_dma_addr = end_dma_addr; 19234c67e2bfSSagi Grimberg last_page_off = end_dma_addr & ~page_mask; 1924ff2ba993SChristoph Hellwig 1925ff2ba993SChristoph Hellwig sg_offset = 0; 19264c67e2bfSSagi Grimberg } 19274c67e2bfSSagi Grimberg 19289aa8b321SBart Van Assche if (sg_offset_p) 19299aa8b321SBart Van Assche *sg_offset_p = 0; 19304c67e2bfSSagi Grimberg return i; 19314c67e2bfSSagi Grimberg } 19324c67e2bfSSagi Grimberg EXPORT_SYMBOL(ib_sg_to_pages); 1933765d6774SSteve Wise 1934765d6774SSteve Wise struct ib_drain_cqe { 1935765d6774SSteve Wise struct ib_cqe cqe; 1936765d6774SSteve Wise struct completion done; 1937765d6774SSteve Wise }; 1938765d6774SSteve Wise 1939765d6774SSteve Wise static void ib_drain_qp_done(struct ib_cq *cq, struct ib_wc *wc) 1940765d6774SSteve Wise { 1941765d6774SSteve Wise struct ib_drain_cqe *cqe = container_of(wc->wr_cqe, struct ib_drain_cqe, 1942765d6774SSteve Wise cqe); 1943765d6774SSteve Wise 1944765d6774SSteve Wise complete(&cqe->done); 1945765d6774SSteve Wise } 1946765d6774SSteve Wise 1947765d6774SSteve Wise /* 1948765d6774SSteve Wise * Post a WR and block until its completion is reaped for the SQ. 1949765d6774SSteve Wise */ 1950765d6774SSteve Wise static void __ib_drain_sq(struct ib_qp *qp) 1951765d6774SSteve Wise { 1952765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 1953765d6774SSteve Wise struct ib_drain_cqe sdrain; 1954765d6774SSteve Wise struct ib_send_wr swr = {}, *bad_swr; 1955765d6774SSteve Wise int ret; 1956765d6774SSteve Wise 1957765d6774SSteve Wise if (qp->send_cq->poll_ctx == IB_POLL_DIRECT) { 1958765d6774SSteve Wise WARN_ONCE(qp->send_cq->poll_ctx == IB_POLL_DIRECT, 1959765d6774SSteve Wise "IB_POLL_DIRECT poll_ctx not supported for drain\n"); 1960765d6774SSteve Wise return; 1961765d6774SSteve Wise } 1962765d6774SSteve Wise 1963765d6774SSteve Wise swr.wr_cqe = &sdrain.cqe; 1964765d6774SSteve Wise sdrain.cqe.done = ib_drain_qp_done; 1965765d6774SSteve Wise init_completion(&sdrain.done); 1966765d6774SSteve Wise 1967765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 1968765d6774SSteve Wise if (ret) { 1969765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 1970765d6774SSteve Wise return; 1971765d6774SSteve Wise } 1972765d6774SSteve Wise 1973765d6774SSteve Wise ret = ib_post_send(qp, &swr, &bad_swr); 1974765d6774SSteve Wise if (ret) { 1975765d6774SSteve Wise WARN_ONCE(ret, "failed to drain send queue: %d\n", ret); 1976765d6774SSteve Wise return; 1977765d6774SSteve Wise } 1978765d6774SSteve Wise 1979765d6774SSteve Wise wait_for_completion(&sdrain.done); 1980765d6774SSteve Wise } 1981765d6774SSteve Wise 1982765d6774SSteve Wise /* 1983765d6774SSteve Wise * Post a WR and block until its completion is reaped for the RQ. 1984765d6774SSteve Wise */ 1985765d6774SSteve Wise static void __ib_drain_rq(struct ib_qp *qp) 1986765d6774SSteve Wise { 1987765d6774SSteve Wise struct ib_qp_attr attr = { .qp_state = IB_QPS_ERR }; 1988765d6774SSteve Wise struct ib_drain_cqe rdrain; 1989765d6774SSteve Wise struct ib_recv_wr rwr = {}, *bad_rwr; 1990765d6774SSteve Wise int ret; 1991765d6774SSteve Wise 1992765d6774SSteve Wise if (qp->recv_cq->poll_ctx == IB_POLL_DIRECT) { 1993765d6774SSteve Wise WARN_ONCE(qp->recv_cq->poll_ctx == IB_POLL_DIRECT, 1994765d6774SSteve Wise "IB_POLL_DIRECT poll_ctx not supported for drain\n"); 1995765d6774SSteve Wise return; 1996765d6774SSteve Wise } 1997765d6774SSteve Wise 1998765d6774SSteve Wise rwr.wr_cqe = &rdrain.cqe; 1999765d6774SSteve Wise rdrain.cqe.done = ib_drain_qp_done; 2000765d6774SSteve Wise init_completion(&rdrain.done); 2001765d6774SSteve Wise 2002765d6774SSteve Wise ret = ib_modify_qp(qp, &attr, IB_QP_STATE); 2003765d6774SSteve Wise if (ret) { 2004765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2005765d6774SSteve Wise return; 2006765d6774SSteve Wise } 2007765d6774SSteve Wise 2008765d6774SSteve Wise ret = ib_post_recv(qp, &rwr, &bad_rwr); 2009765d6774SSteve Wise if (ret) { 2010765d6774SSteve Wise WARN_ONCE(ret, "failed to drain recv queue: %d\n", ret); 2011765d6774SSteve Wise return; 2012765d6774SSteve Wise } 2013765d6774SSteve Wise 2014765d6774SSteve Wise wait_for_completion(&rdrain.done); 2015765d6774SSteve Wise } 2016765d6774SSteve Wise 2017765d6774SSteve Wise /** 2018765d6774SSteve Wise * ib_drain_sq() - Block until all SQ CQEs have been consumed by the 2019765d6774SSteve Wise * application. 2020765d6774SSteve Wise * @qp: queue pair to drain 2021765d6774SSteve Wise * 2022765d6774SSteve Wise * If the device has a provider-specific drain function, then 2023765d6774SSteve Wise * call that. Otherwise call the generic drain function 2024765d6774SSteve Wise * __ib_drain_sq(). 2025765d6774SSteve Wise * 2026765d6774SSteve Wise * The caller must: 2027765d6774SSteve Wise * 2028765d6774SSteve Wise * ensure there is room in the CQ and SQ for the drain work request and 2029765d6774SSteve Wise * completion. 2030765d6774SSteve Wise * 2031765d6774SSteve Wise * allocate the CQ using ib_alloc_cq() and the CQ poll context cannot be 2032765d6774SSteve Wise * IB_POLL_DIRECT. 2033765d6774SSteve Wise * 2034765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2035765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2036765d6774SSteve Wise */ 2037765d6774SSteve Wise void ib_drain_sq(struct ib_qp *qp) 2038765d6774SSteve Wise { 2039765d6774SSteve Wise if (qp->device->drain_sq) 2040765d6774SSteve Wise qp->device->drain_sq(qp); 2041765d6774SSteve Wise else 2042765d6774SSteve Wise __ib_drain_sq(qp); 2043765d6774SSteve Wise } 2044765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_sq); 2045765d6774SSteve Wise 2046765d6774SSteve Wise /** 2047765d6774SSteve Wise * ib_drain_rq() - Block until all RQ CQEs have been consumed by the 2048765d6774SSteve Wise * application. 2049765d6774SSteve Wise * @qp: queue pair to drain 2050765d6774SSteve Wise * 2051765d6774SSteve Wise * If the device has a provider-specific drain function, then 2052765d6774SSteve Wise * call that. Otherwise call the generic drain function 2053765d6774SSteve Wise * __ib_drain_rq(). 2054765d6774SSteve Wise * 2055765d6774SSteve Wise * The caller must: 2056765d6774SSteve Wise * 2057765d6774SSteve Wise * ensure there is room in the CQ and RQ for the drain work request and 2058765d6774SSteve Wise * completion. 2059765d6774SSteve Wise * 2060765d6774SSteve Wise * allocate the CQ using ib_alloc_cq() and the CQ poll context cannot be 2061765d6774SSteve Wise * IB_POLL_DIRECT. 2062765d6774SSteve Wise * 2063765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2064765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2065765d6774SSteve Wise */ 2066765d6774SSteve Wise void ib_drain_rq(struct ib_qp *qp) 2067765d6774SSteve Wise { 2068765d6774SSteve Wise if (qp->device->drain_rq) 2069765d6774SSteve Wise qp->device->drain_rq(qp); 2070765d6774SSteve Wise else 2071765d6774SSteve Wise __ib_drain_rq(qp); 2072765d6774SSteve Wise } 2073765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_rq); 2074765d6774SSteve Wise 2075765d6774SSteve Wise /** 2076765d6774SSteve Wise * ib_drain_qp() - Block until all CQEs have been consumed by the 2077765d6774SSteve Wise * application on both the RQ and SQ. 2078765d6774SSteve Wise * @qp: queue pair to drain 2079765d6774SSteve Wise * 2080765d6774SSteve Wise * The caller must: 2081765d6774SSteve Wise * 2082765d6774SSteve Wise * ensure there is room in the CQ(s), SQ, and RQ for drain work requests 2083765d6774SSteve Wise * and completions. 2084765d6774SSteve Wise * 2085765d6774SSteve Wise * allocate the CQs using ib_alloc_cq() and the CQ poll context cannot be 2086765d6774SSteve Wise * IB_POLL_DIRECT. 2087765d6774SSteve Wise * 2088765d6774SSteve Wise * ensure that there are no other contexts that are posting WRs concurrently. 2089765d6774SSteve Wise * Otherwise the drain is not guaranteed. 2090765d6774SSteve Wise */ 2091765d6774SSteve Wise void ib_drain_qp(struct ib_qp *qp) 2092765d6774SSteve Wise { 2093765d6774SSteve Wise ib_drain_sq(qp); 209442235f80SSagi Grimberg if (!qp->srq) 2095765d6774SSteve Wise ib_drain_rq(qp); 2096765d6774SSteve Wise } 2097765d6774SSteve Wise EXPORT_SYMBOL(ib_drain_qp); 2098